U.S. patent application number 16/596285 was filed with the patent office on 2020-07-16 for automatic sand abrasion device.
The applicant listed for this patent is CITIC DICASTAL CO., LTD. Invention is credited to Chao Ma, Haifeng Yuan, Liqun Zheng, Jiwei Zhou.
Application Number | 20200223030 16/596285 |
Document ID | / |
Family ID | 67076582 |
Filed Date | 2020-07-16 |
![](/patent/app/20200223030/US20200223030A1-20200716-D00000.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00001.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00002.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00003.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00004.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00005.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00006.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00007.png)
![](/patent/app/20200223030/US20200223030A1-20200716-D00008.png)
United States Patent
Application |
20200223030 |
Kind Code |
A1 |
Zhou; Jiwei ; et
al. |
July 16, 2020 |
AUTOMATIC SAND ABRASION DEVICE
Abstract
An automatic sand abrasion device includes a shell, an
integrated framework, a sand falling mechanism, a sand transport
mechanism, a sand falling channel, a sample working frame and a
circuit control cabinet, where the device adopts the transport belt
and the second speed reduction motor to realize transportation of
sand, and realizes that the weighed sand falls into the bottom of
the abrasion device through the first speed reduction motor and the
automatic weighing machine. The whole process can be automatically
operated while parameters such as the operation time and the weight
of abrasion sand are set, so that the detection efficiency for the
abrasion resistance can be improved, and the labor cost is greatly
reduced. The device is firm in structure and stable and reliable in
work and improves the accuracy and efficiency of an experiment.
Inventors: |
Zhou; Jiwei; (Qinhuangdao,
CN) ; Ma; Chao; (Qinhuangdao, CN) ; Zheng;
Liqun; (Qinhuangdao, CN) ; Yuan; Haifeng;
(Qinhuangdao, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CITIC DICASTAL CO., LTD |
Qinhuangdao |
|
CN |
|
|
Family ID: |
67076582 |
Appl. No.: |
16/596285 |
Filed: |
October 8, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B24C 3/02 20130101 |
International
Class: |
B24C 3/02 20060101
B24C003/02 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 15, 2019 |
CN |
201910034694.3 |
Claims
1. An automatic sand abrasion device, comprising: a shell, an
integrated framework, a sand falling mechanism, a sand transport
mechanism, a sand falling channel, a sample working frame and a
circuit control cabinet; wherein the integrated framework comprises
an experiment table supporting frame, supporting rods and a
weighing machine bracket; the weighing machine bracket is fixedly
mounted at a bottom in the experiment table supporting frame; the
supporting rods are fixedly disposed in the experiment table
supporting frame; wherein the shell is welded on the experiment
table supporting frame, and the integrated framework, the sand
falling mechanism, the sand transport mechanism, the sand falling
channel and the sample working frame are all located in the shell;
the circuit control cabinet is located outside the shell; wherein
the sand falling mechanism is configured to allow sand on an
automatic weighing machine to fall into a bottom of the automatic
sand abrasion device, and comprises a guide rail slot, the
automatic weighing machine, a first speed reduction motor and a
rectangular toothed rack frame; the guide rail slot is fixed on the
weighing machine bracket; the rectangular toothed rack frame is
disposed on two sides of the inner side of the guide rail slot; a
toothed rack is disposed on the rectangular toothed rack frame; the
automatic weighing machine and the rectangular toothed rack frame
are fixedly connected; a gear of the first speed reduction motor is
mounted in the rectangular toothed rack frame and meshes with the
toothed rack of the rectangular toothed rack frame, so that the
gear of the first speed reduction motor is configured to drive the
automatic weighing machine through the rectangular toothed rack
frame to do a horizontal back and forth motion along the guide rail
slot; wherein the sand transport mechanism comprises a second speed
reduction motor, a transport belt wheel, a transport belt and guide
rollers; the second speed reduction motor is fixed at the exterior
top of the experiment table supporting frame; the guide rollers are
fixed along a moving track of the transport belt; an output shaft
of the second speed reduction motor is connected with the transport
belt wheel; the transport belt is disposed on the transport belt
wheel; the second speed reduction motor drives the transport belt
wheel to rotate; the transport belt wheel rotates to drive the
transport belt to operate along a rail regulated by the guide
rollers; experimental sand is poured into the bottom of the sand
abrasion device to submerge a bottom of the transport belt; wherein
the sand falling channel is located at a middle position of a
region encircled by the transport belt, and comprises an upper
funnel, a falling pipe and a sand collection inverted bucket; an
upper end of the falling pipe is provided with the upper funnel,
and a lower end of the falling pipe is provided with the sand
collection inverted bucket; the falling pipe and the sand
collection inverted bucket are fixedly mounted on the experiment
table supporting frame; a door is disposed on the sand collection
inverted bucket and can be opened to place an experiment object; a
lower end of the sand collection inverted bucket is in contact with
an upper surface of the automatic weighing machine; the area of the
upper surface of the automatic weighing machine is larger than that
of an opening at the lower end of the sand collection inverted
bucket; wherein the sample working frame comprises an experiment
object frame, an object frame supporting rod and object fixing
bolts; the experiment object frame is located in the sand
collection inverted bucket; the object frame supporting rod passes
through the sand collection inverted bucket to fix the experiment
object frame on the experiment table supporting frame; the object
fixing bolts are used for fixing the experiment object and
adjusting the position of the experiment object on the experiment
object frame; and wherein the circuit control cabinet is located on
one side of the shell and is configured to control the work of the
first speed reduction motor and the second speed reduction motor;
and the circuit control cabinet is provided with a display to
display a current total amount and an accumulated weight of the
sand weighed by the automatic weighing machine and the number of
times of weighing.
2. The automatic sand abrasion device according to claim 1, wherein
an upper port of the falling pipe is provided with a sand baffle
plate, and the sand baffle plate is conical.
3. The automatic sand abrasion device according to claim 2, wherein
the upper port of the falling pipe passes through a bottom of the
upper funnel and extends into the upper funnel by a certain length;
a ringlike sand speed reduction chamfering ditch is formed at a
joint of the falling pipe and the upper funnel; and an included
angle between the upper funnel and a wall of the falling pipe
extending thereinto is 50.degree.+/-1.degree..
4. The automatic sand abrasion device according to claim 1, wherein
one side of the transport belt comprises a rough plane, and the
other side of the transport belt is made into an arc-shaped bucket;
and the arc-shaped bucket drives an amount of sand to move towards
an upper end of the upper funnel, and the amount of sand falls into
the upper funnel from the arc-shaped bucket above the upper
funnel.
5. The automatic sand abrasion device according to claim 1, wherein
a falling pipe hand grab is mounted on the experiment table
supporting frame; the falling pipe hand grab extends into the
falling pipe; the falling pipe is fastened on the falling pipe hand
grab; and the sand collection inverted bucket is welded onto the
experiment table supporting frame through a connection rod.
6. The automatic sand abrasion device according to claim 1, wherein
a holder frame for mounting the automatic weighing machine is
disposed on the experiment table supporting frame.
7. The automatic sand abrasion device according to claim 1, wherein
a vent is formed in an upper side surface of the shell.
8. The automatic sand abrasion device according to claim 1, wherein
four groups of the guide rollers are provided and respectively
mounted on left and right sides of an upper end and left and right
sides of a lower end of the transport belt.
9. The automatic sand abrasion device according to claim 1, wherein
a transport belt locating slot is formed in a bottom of the shell,
and a transport belt locating rod is mounted at an upper part of
the shell to prevent the transport belt from falling off.
10. The automatic sand abrasion device according to claim 1,
wherein a fixed sleeve and a fastening bolt are disposed on the
experiment table supporting frame; and the object frame supporting
rod of the experiment object frame is fixed in the fixed sleeve on
the experiment table supporting frame through the fastening
bolt.
11. The automatic sand abrasion device according to claim 1,
wherein a side wall of the shell is provided with a transport belt
tightening device.
12. The automatic sand abrasion device according to claim 1,
wherein six object fixing bolts on the sample working frame are
uniformly distributed along a fixed surface of the experiment
object frame.
13. The automatic sand abrasion device according to claim 1,
wherein a travel limiting switch is mounted on the guide rail slot
to determine a travel of the horizontal back and forth motion of
the automatic weighing machine.
14. The automatic sand abrasion device according to claim 1,
wherein the upper port of the falling pipe passes through a bottom
of the upper funnel and extends into the upper funnel by a certain
length; a ringlike sand speed reduction chamfering ditch is formed
at a joint of the falling pipe and the upper funnel; and an
included angle between the upper funnel and a wall of the falling
pipe extending thereinto is 50.degree.+/-1.degree..
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to Chinese Patent
Application No. 201910034694.3, entitled AUTOMATIC SAND ABRASION
DEVICE and filed on Jan. 15, 2019, which is incorporated herein by
reference for all purposes.
FIELD OF THE INVENTION
[0002] The present disclosure relates to the technical field of
verification of sand abrasion resistance of coated surface paints,
and more particularly relates to an automatic sand abrasion
device.
BACKGROUND OF THE INVENTION
[0003] With the upgrading of automobile consumption, people pay
more and more attention to the appearance of automobiles, and the
more beautiful the appearance of an automobile is, the more popular
the automobile is. The quality of a paint is directly related to
whether the appearance of the automobile is accepted by the public.
Therefore, automobile manufacturers pay special attention to the
various properties of the paint. The abrasion resistance of the
paint is directly related to whether the appearance of the
automobile will be easily scratched during use.
[0004] At present, detection of the abrasion resistance of the
paint is still at the stage of manually carrying sand to a certain
position little by little and then causing the sand to impact the
surface of a paint film. This measure not only consumes a lot of
manpower and material resources, but also has a great impact on
human health since tiny dust may suffuse in air during the
impacting. In addition, such measure is relatively low in detection
capacity and accuracy and is very low in efficiency.
SUMMARY OF THE INVENTION
[0005] The embodiment of the present disclosure provides an
automatic sand abrasion device, which can improve the detection
efficiency for the abrasion resistance of a paint, greatly reduces
the labor cost and improves the accuracy and efficiency of the
experiment.
[0006] In order to achieve the above objective, the present
disclosure provides the following technical solution:
[0007] An automatic sand abrasion device, which is characterized by
including a shell, an integrated framework, a sand falling
mechanism, a sand transport mechanism, a sand falling channel, a
sample working frame and a circuit control cabinet. The integrated
framework includes an experiment table supporting frame, supporting
rods and a weighing machine bracket. The weighing machine bracket
is fixedly mounted at the bottom in the experiment table supporting
frame. The supporting rods are fixedly disposed in the experiment
table supporting frame to allow the integrated framework to be
firmer. The shell is welded on the experiment table supporting
frame, and the integrated framework, the sand falling mechanism,
the sand transport mechanism, the sand falling channel and the
sample working frame are all located in the shell. The circuit
control cabinet is located outside the shell. The sand falling
mechanism is used for allowing sand on an automatic weighing
machine to fall into the bottom of the automatic sand abrasion
device, and includes a guide rail slot, the automatic weighing
machine, a first speed reduction motor and a rectangular toothed
rack frame. The guide rail slot is fixed on the weighing machine
bracket. The rectangular toothed rack frame is disposed on two
sides of the inner side of the guide rail slot. A toothed rack is
disposed on the rectangular toothed rack frame. The automatic
weighing machine and the rectangular toothed rack frame are fixedly
connected. A gear of the first speed reduction motor is mounted in
the rectangular toothed rack frame and meshes with the toothed rack
of the rectangular toothed rack frame, so that the gear of the
first speed reduction motor can drive the automatic weighing
machine through the rectangular toothed rack frame to do a
horizontal back and forth motion along the guide rail slot. The
sand transport mechanism includes a second speed reduction motor, a
transport belt wheel, a transport belt and guide rollers. The
second speed reduction motor is fixed at the exterior top of the
experiment table supporting frame. The guide rollers are fixed
along a moving track of the transport belt. An output shaft of the
second speed reduction motor is connected with the transport belt
wheel. The transport belt is disposed on the transport belt wheel.
The second speed reduction motor drives the transport belt wheel to
rotate. The transport belt wheel rotates to drive the transport
belt to operate along a rail regulated by the guide rollers.
Experimental sand is poured into the bottom of the sand abrasion
device to submerge the bottom of the transport belt. The sand
falling channel is located at a middle position of a region
encircled by the transport belt, and includes an upper funnel, a
falling pipe and a sand collection inverted bucket. The upper end
of the falling pipe is provided with the upper funnel, and the
lower end of the falling pipe is provided with the sand collection
inverted bucket. The falling pipe and the sand collection inverted
bucket are fixedly mounted on the experiment table supporting
frame. A door is disposed on the sand collection inverted bucket
and can be opened to place an experiment object. The lower end of
the sand collection inverted bucket is in contact with the upper
surface of the automatic weighing machine. The area of the upper
surface of the automatic weighing machine is larger than that of an
opening at the lower end of the sand collection inverted bucket.
The sample working frame includes an experiment object frame, an
object frame supporting rod and object fixing bolts. The experiment
object frame is located in the sand collection inverted bucket. The
object frame supporting rod passes through the sand collection
inverted bucket to fix the experiment object frame on the
experiment table supporting frame. The object fixing bolts are used
for fixing the experiment object and adjusting the position of the
experiment object on the experiment object frame. The circuit
control cabinet is located on one side of the shell and is used for
controlling the work of the first speed reduction motor and the
second speed reduction motor. The circuit control cabinet is
provided with a display to display a current total amount and
accumulated weights of the sand weighed by the automatic weighing
machine and the number of times of weighing.
[0008] Preferably, an upper port of the falling pipe is provided
with a sand baffle plate, and the sand baffle plate is conical.
[0009] Preferably, the upper port of the falling pipe passes
through the bottom of the upper funnel and extends into the upper
funnel by a certain length. A ringlike sand speed reduction
chamfering ditch is formed at a joint of the falling pipe and the
upper funnel. An included angle between the upper funnel and the
wall of the falling pipe extending thereinto is 50+/-1 degrees.
[0010] Preferably, one side of the transport belt is made into a
rough plane, and the other side of the transport belt is made into
an arc-shaped bucket. The arc-shaped bucket drives a certain amount
of sand to move towards the upper end of the upper funnel, and the
sand falls into the upper funnel from the arc-shaped bucket above
the upper funnel.
[0011] Preferably, a falling pipe hand grab is mounted on the
experiment table supporting frame. The falling pipe hand grab
extends into the falling pipe. The falling pipe is fastened on the
falling pipe hand grab. The sand collection inverted bucket is
welded onto the experiment table supporting frame through a
connection rod.
[0012] Preferably, a holder frame for mounting the automatic
weighing machine is also disposed on the experiment table
supporting frame.
[0013] Preferably, a vent is formed in the upper side surface of
the shell.
[0014] Preferably, four groups of the guide rollers are provided
and respectively mounted on the left and right sides of the upper
end and the left and right sides of the lower end of the transport
belt.
[0015] Preferably, a transport belt locating slot is formed in the
bottom of the shell, and a transport belt locating rod is mounted
at the upper part of the shell to prevent the transport belt from
falling off.
[0016] Preferably, a fixed sleeve and a fastening bolt are disposed
on the experiment table supporting frame. The object frame
supporting rod of the experiment object frame is fixed in the fixed
sleeve on the experiment table supporting frame through the
fastening bolt.
[0017] Preferably, the side wall of the shell is also provided with
a transport belt tightening device.
[0018] Preferably, the six object fixing bolts on the sample
working frame are uniformly distributed along a fixed surface of
the experiment object frame.
[0019] Preferably, a travel limiting switch is mounted on the guide
rail slot to determine a travel of the horizontal back and forth
motion of the automatic weighing machine.
[0020] Compared with the prior art, the present disclosure has the
beneficial effects that the automatic sand abrasion device in the
present disclosure adopts the transport belt and the second speed
reduction motor to realize transportation of the sand, and realizes
that the weighed sand falls into the bottom of the abrasion device
through the first speed reduction motor and the automatic weighing
machine; the whole process can be automatically operated while
parameters such as the operation time and the weight of abrasion
sand are set, so that the detection efficiency for the abrasion
resistance can be improved, the labor cost is greatly reduced, and
the accuracy and efficiency of the experiment are improved; and
furthermore, tiny dust produced in the operation process of the
abrasion device can be discharged from the vent by disposing the
shell and the vent in the shell, so as to eliminate the influence
of the dust on the human health; in the present disclosure, the
sand falls off uniformly and an initial downward speed of the sand
at the upper port of the falling pipe is allowed to be close to
zero as much as possible due to the design of the sand baffle plate
and the ringlike sand speed reduction chamfering ditch, thereby
improving the accuracy of the experiment; in the mechanism design
of the transport belt of the present disclosure, one side is made
into the rough plane, and the other side is made into the
arc-shaped bucket, thereby improving the sand carrying efficiency;
the transport belt locating slot is formed in the bottom of the
shell in the present disclosure, and the transport belt locating
rod is mounted at the upper part of the shell to prevent the
transport belt from falling off; the side wall of the shell is also
provided with the transport belt tightening device to prevent that
lengthening of the belt due to long-term use affects equipment
operation; and these arrangements make the device firm in structure
and stable and reliable in work. It can be seen that the present
disclosure provides the automatic sand abrasion device which can
improve the detection efficiency for the abrasion resistance and
greatly reduce the labor cost, is firm in structure and stable and
reliable in work and improves the accuracy and efficiency of the
experiment.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is a front view of an automatic sand abrasion device
of the present disclosure;
[0022] FIG. 2 is a side view of an automatic sand abrasion device
of the present disclosure;
[0023] FIG. 3 is a structural schematic diagram of a transport belt
of the automatic sand abrasion device;
[0024] FIG. 4 is a structural schematic diagram of an arc-shaped
bucket of the transport belt of the automatic sand abrasion
device;
[0025] FIG. 5 is a partially structural schematic diagram of a
guide rail slot portion of the transport belt of the automatic sand
abrasion device;
[0026] FIG. 6 is a structural schematic diagram of a left view of
the guide rail slot of the transport belt of the automatic sand
abrasion device;
[0027] FIG. 7 is a structural schematic diagram of a first
embodiment of an upper funnel and falling pipe connection structure
of the transport belt of the automatic sand abrasion device;
and
[0028] FIG. 8 is a structural schematic diagram of a second
embodiment of an upper funnel and falling pipe connection structure
of the transport belt of the automatic sand abrasion device.
[0029] In the drawings: 1: shell; 2: transport belt; 3: upper
funnel; 4: falling pipe; 5: sand collection inverted bucket; 6:
experiment object frame; 7: automatic weighing machine; 8: guide
roller; 9: experimental sand; 10: vent; 11: transport belt
tightening device; 12: object fixing bolt; 13: second speed
reduction motor; 14: supporting rod; 15: experiment table
supporting frame; 16: fastening bolt; 17: fixed sleeve; 18:
connection rod; 19: first speed reduction motor; 20: guide rail
slot; 21: weighing machine bracket; 22: transport belt locating
rod; 23: falling pipe hand grab; 24: bolt; 25: experiment object;
26: circuit control cabinet; 27: PLC (Programmable Logic
Controller) display; 28: holder frame; 29: transport belt locating
slot; 30: transport belt wheel; 0201: rough plane; 0203: arc-shaped
bucket; 2001: rectangular toothed rack frame; 2002: toothed rack;
2003: gear; 2004: travel limiting switch; 0301: ringlike sand speed
reduction chamfering ditch; and 0302: sand baffle plate.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] Referring to FIGS. 1 to 7, one embodiment provided by the
present disclosure is as follows.
[0031] An automatic sand abrasion device is characterized by
including a shell 1, an integrated framework, a sand falling
mechanism, a sand transport mechanism, a sand falling channel, a
sample working frame and a circuit control cabinet 26. The
integrated framework includes an experiment table supporting frame
15, supporting rods 14 and a weighing machine bracket 21. The
weighing machine bracket 21 is fixedly mounted at the bottom in the
experiment table supporting frame 15. The supporting rods 14 are
fixedly disposed in the experiment table supporting frame 15 to
allow the integrated framework to be firmer. In the present
embodiment, the supporting rods and the weighing machine bracket
are welded inside the experiment table supporting frame. The shell
1 is welded on the experiment table supporting frame 15, and the
integrated framework, the sand falling mechanism, the sand
transport mechanism, the sand falling channel and the sample
working frame are all located in the shell 1. The circuit control
cabinet 26 is located outside the shell 1. The sand falling
mechanism is used for allowing sand on an automatic weighing
machine 7 to fall into the bottom of the automatic sand abrasion
device, and includes a guide rail slot 20, the automatic weighing
machine 7, a first speed reduction motor 19 and a rectangular
toothed rack frame 2001. The guide rail slot 20 is fixed on the
weighing machine bracket 21. The rectangular toothed rack frame
2001 is disposed on two sides of the inner side of the guide rail
slot 20. A toothed rack 2002 is disposed on the rectangular toothed
rack frame 2001. The automatic weighing machine 7 and the
rectangular toothed rack frame 2001 are fixedly connected. A gear
2003 of the first speed reduction motor 19 is mounted in the
rectangular toothed rack frame 2001 and meshes with the toothed
rack 2002 of the rectangular toothed rack frame 2001, so that the
gear 2003 of the first speed reduction motor can drive the
automatic weighing machine through the rectangular toothed rack
frame 2001 to do a horizontal back and forth motion along the guide
rail slot. The rectangular toothed rack frame 2001 is mounted
inside the guide rail slot 20, and the gear 2003 of the first speed
reduction motor 19 is mounted in the rectangular toothed rack frame
2001 and meshes with the toothed rack 2002 of the rectangular
toothed rack frame. The size of the designed rectangular toothed
rack frame 2001 needs to ensure that the gear 2003 of the first
speed reduction motor 19 is not transversely separated from the
toothed rack 2002 in an operation process such that the gear 2003
of the first speed reduction motor 19 can drive the automatic
weighing machine 7 through the rectangular toothed rack frame 2001
to do a back and forth motion in a horizontal direction along the
guide rail slot 20. In the present embodiment, a door is disposed
on the experiment table supporting frame 15. The door in the
experiment table supporting frame 15 is opened to mount the first
speed reduction motor 19 to allow the gear of the first speed
reduction motor to perfectly mesh with the toothed rack. The sand
transport mechanism includes a second speed reduction motor 13, a
transport belt wheel 30, a transport belt 2 and guide rollers 8.
The second speed reduction motor 13 is fixed at the exterior top of
the experiment table supporting frame 15. The guide rollers 8 are
fixed along a moving track of the transport belt 2. An output shaft
of the second speed reduction motor 13 is connected with the
transport belt wheel 30. The transport belt 2 is disposed on the
transport belt wheel 30. The second speed reduction motor 13 drives
the transport belt wheel 30 to rotate. The transport belt wheel 30
rotates to drive the transport belt 2 to operate along a rail
regulated by the guide rollers 8. The sand falling channel is
located at a middle position of a region encircled by the transport
belt, and includes an upper funnel 3, a falling pipe 4 and a sand
collection inverted bucket 5. The upper end of the falling pipe 4
is provided with the upper funnel 3, and the lower end of the
falling pipe 4 is provided with the sand collection inverted bucket
5. The falling pipe 4 and the sand collection inverted bucket 5 are
fixedly mounted on the experiment table supporting frame 15. In the
present embodiment, the sand collection inverted bucket 5 is welded
onto the experiment table supporting frame through a connection rod
18. A door is disposed on the sand collection inverted bucket and
can be opened to place an experiment object. The lower end of the
sand collection inverted bucket 5 is in contact with the upper
surface of the automatic weighing machine 7. The area of the upper
surface of the automatic weighing machine 7 is larger than that of
an opening at the lower end of the sand collection inverted bucket
5. In the present embodiment, a falling pipe hand grab 23 is
mounted on the experiment table supporting frame 15, and the
falling pipe 4 is locked by a bolt 24. The sample working frame
includes an experiment object frame 6, an object frame supporting
rod and object fixing bolts 12. The experiment object frame 6 is
located in the sand collection inverted bucket 5. The object frame
supporting rod passes through the sand collection inverted bucket 5
to fix the experiment object frame on the experiment table
supporting frame 15. The object fixing bolts 12 are used for fixing
an experiment object and adjusting the position of the experiment
object on the experiment object frame 6. The circuit control
cabinet 26 is located on one side of the shell 1 and is used for
controlling the work of the first speed reduction motor 19 and the
second speed reduction motor 13. The circuit control cabinet 26 is
provided with a display to display a current total amount and an
accumulated weight of the sand weighed by the automatic weighing
machine and the number of times of weighing. The display in the
present embodiment is a PLC (Programmable Logic Controller) display
27.
[0032] In the present embodiment, an upper port of the falling pipe
4 is welded with a sand baffle plate 0302, and the sand baffle
plate 0302 is conical. In order to prevent the inaccuracy of an
experiment due to the fact that the transport belt 2 moves to the
top end of the falling pipe 4 to make the sand directly flow into
the falling pipe 4, the sand baffle plate 0302 is designed to block
the sand possibly directly falling into the falling pipe 4 to
redirect the sand, so that the sand flows onto the side wall of the
funnel and then passes through a ringlike sand speed reduction
chamfering ditch 0301 to enable the initial speed to be close to
zero as much as possible.
[0033] In the present embodiment, the upper port of the falling
pipe 4 passes through the bottom of the upper funnel 3 and extends
into the upper funnel 3 by a certain length. The ringlike sand
speed reduction chamfering ditch 0301 is formed at a joint of the
falling pipe 4 and the upper funnel 3. An included angle between
the upper funnel 3 and the wall of the falling pipe extending
thereinto is 50+/-1 degrees. In the present embodiment, during
installation, the upper funnel 3 is mounted at a position,
described in FIGS. 6 to 7, on the falling pipe 4 from a lower port
of the falling pipe 4. The included angle between the upper funnel
3 and the wall of the falling pipe is 50+/-1 degrees. A certain
linear distance is reserved between the corner of the upper funnel
3 and the upper port of the falling pipe 4. In the present
embodiment, the ringlike sand speed reduction chamfering ditch 0301
is designed, which consists of the outer wall of the falling pipe
and the side wall of the funnel and has an included angle of 50
degrees. The chamfering ditch is filled with the sand falling from
the transport belt and has a frictional speed reduction effect on
the sand subsequently flowing into the falling pipe 4 in order to
ensure that the initial downward speed of the sand at the upper
port of the falling pipe is close to zero as much as possible when
the sand falls from the belt into the funnel device.
[0034] In the present embodiment, one side of the transport belt 2
is made into a rough plane 0201, and the other side of the
transport belt 2 is made into an arc-shaped bucket 0203. The
arc-shaped bucket 0203 drives a certain amount of sand to move
towards the upper end of the upper funnel 3, and the sand falls
into the upper funnel 3 from the arc-shaped bucket 0203 above the
upper funnel 3. Experimental sand 9 is poured into the bottom of
the sand abrasion device to submerge the arc-shaped bucket 0203 at
the bottom of the transport belt.
[0035] In the present embodiment, a falling pipe hand grab 23 is
mounted on the experiment table supporting frame 15. The falling
pipe hand grab 23 extends into the falling pipe 4. The falling pipe
4 is fastened on the falling pipe hand grab 23. In the present
embodiment, the falling pipe hand grab 23 is mounted on the
experiment table supporting frame 15, and the falling pipe 4 is
locked by a bolt 24. The sand collection inverted bucket 5 is
welded onto the experiment table supporting frame through a
connection rod 18.
[0036] In the present embodiment, a holder frame 28 for mounting
the automatic weighing machine 7 is also disposed on the experiment
table supporting frame 15.
[0037] In the present embodiment, a vent 10 is formed in the upper
side surface of the shell to facilitate dust removal.
[0038] In the present embodiment, four groups of the guide rollers
8 are provided, as shown in FIG. 1, and respectively mounted on the
left and right sides of the upper end and the left and right sides
of the lower end of the transport belt.
[0039] In the present embodiment, a transport belt locating slot 29
is formed in the bottom of the shell 1, and a transport belt
locating rod 22 is mounted at the upper part of the shell 1 to
prevent the transport belt from falling off. The transport belt
locating slot 29 is welded to the bottom of the shell 1, and the
transport belt locating rod 22 is welded to the upper part of the
shell 1.
[0040] In the present embodiment, a fixed sleeve 17 and a fastening
bolt 16 are disposed on the experiment table supporting frame 15.
The object frame supporting rod of the experiment object frame 6 is
fixed in the fixed sleeve 17 on the experiment table supporting
frame 15 through the fastening bolt 16. In the present embodiment,
during installation, the door of the sand collection inverted
bucket 5 is opened to mount the experiment object frame 6.
[0041] In the present embodiment, the side wall of the shell is
also provided with a transport belt tightening device 11 in order
to prevent that lengthening of the belt due to long-term use
affects equipment operation.
[0042] In the present embodiment, six object fixing bolts on the
sample working frame are uniformly distributed along the fixed
surface of the experiment object frame 6. During installation, the
position of the experiment object on the experiment object frame 6
is adjusted through the six object fixing bolts 12 on the
experiment object frame 6.
[0043] In the present embodiment, a travel limiting switch 2004 is
mounted on the guide rail slot 20 to determine a travel of the
horizontal back and forth motion of the automatic weighing machine
7.
[0044] The present embodiment designs the device of the guide rail
slot 20 for pulling back and stretching out of the automatic
weighing machine 7, specifically as shown in FIG. 5. 2003
represents the gear connected to the speed reduction motor, and
2002 represents the toothed rack meshing with the gear and arranged
on the rectangular toothed rack frame 2001. With clockwise and
anticlockwise rotation of an engine, the toothed rack is connected
with the automatic weighing machine for pulling back and stretching
out. The size of the designed rectangular toothed rack frame 2001
needs to ensure that the gear 2003 of the first speed reduction
motor 19 is not transversely separated from the toothed rack 2002
in the operation process such that the gear 2003 of the first speed
reduction motor 19 can drive the automatic weighing machine 7
through the rectangular toothed rack frame 2001 to do a back and
forth motion in a horizontal direction along the guide rail slot
20.
[0045] An installation order of the automatic sand abrasion device
is as follows:
[0046] the experiment table supporting frame 15 is mounted; the
supporting rods 14 and the weighing machine bracket 21 are welded
inside the experiment table supporting frame 15; the guide rail
slot 20 is mounted on the weighing machine bracket 21 through a
nut; the second speed reduction motor 13 and the transport belt
wheel 30 are mounted; the falling pipe hand grab 23 is mounted on
the experiment table supporting frame 15, and the falling pipe 4 is
mounted and then is locked with a bolt 24; the upper port of the
falling pipe is welded with the sand baffle plate 0302; the upper
funnel 3 is mounted to the position, described as in FIGS. 6 to 7,
on the falling pipe 4 from the lower port of the falling pipe 4;
the included angle between the upper funnel 3 and the wall of the
falling pipe is 50+/-1 degrees; the certain linear distance is
reserved between the corner of the upper funnel 3 and the upper
port of the falling pipe 4; the sand collection inverted bucket 5
is welded onto the experiment table supporting frame 15 through the
connection rod 18; the automatic weighing machine 7 and the
rectangular toothed rack frame 2001 are welded together and then
are mounted inside the guide rail slot 20; the holder frame 28 for
the automatic weighing machine 7 is mounted; the door of the
experiment table supporting frame 15 is opened to mount the first
speed reduction motor 19 such that the gear 2003 of the speed
reduction motor perfectly meshes with the toothed rack 2002; the
shell 1 is mounted, which is welded onto the experiment table
supporting frame 15; one vent 10 is formed in the upper side
surface of the shell to facilitate the dust removal; the circuit
control cabinet 26 and the PLC display are mounted; the front door
of the shell 1 is opened to mount the four groups of guide rollers
8 at appointed positions in FIG. 1; the transport belt locating
slot 29 is mounted, which is welded to the bottom of the shell 1;
the transport belt locating rod 22 is mounted, which is welded to
the upper part of the shell; the transport belt 2 is mounted; a
method for transporting the sand by the transport belt under the
driving of the speed reduction motor is to make one side of the
belt into the rough plane 0201 and make the other side into the
arc-shaped bucket 0203; the transport belt tightening device 11 is
mounted on the side wall of the shell; the door of the sand
collection inverted bucket 5 is opened to mount the experiment
object frame 6, and the front and back positions of the experiment
object frame 6 may be adjusted through the fixed sleeve 17 and the
fastening bolt 16; the experiment object 25 is mounted, and the
position of the experiment object on the sample frame is adjusted
through the six object fixing bolts 12 on the experiment object
frame 6; and the experimental sand 9 is poured into the bottom of
the abrasion device.
[0047] A working order of the automatic sand abrasion device of the
present embodiment is as follows:
[0048] Step I: some sand is placed at the bottom of the abrasion
device to submerge the arc-shaped bucket 0203 at the bottom of the
belt;
[0049] Step II: experiment equipment is started; the transport belt
is driven by the second speed reduction motor 13 to clockwise
operate along a rail regulated by the guide rollers 8, and the
arc-shaped bucket 0203 drives the certain amount of sand to move
towards the upper end of the funnel; the sand falling in the moving
process returns to the bottom of the device under the action of the
gravity; the sand falls into the funnel from the arc-shaped bucket
0203 when reaching a position above the funnel; the sand uniformly
passes through the ringlike sand speed reduction chamfering ditch
0301 to flow to the falling pipe 4 via adjustment of the sand
baffle plate 0302 of the device;
[0050] Step III: the sand freely falls onto the surface of the
experiment object through the falling pipe 4, and then intensively
falls onto the surface of the automatic weighing machine 7 under
the action of the sand collection inverted bucket 5; and
[0051] Step IV: the second speed reduction motor 13 and the first
speed reduction motor 19 are controlled through a PLC program in
the circuit control cabinet to set programs according to the
following cycle:
[0052] (1) the second speed reduction motor 13 controls the belt to
work at a speed of 6 r/m for 4 min;
[0053] (2) the second speed reduction motor 13 stops working;
[0054] (3) the equipment stops the operation for 30 s to allow the
sand on the upper funnel 3, the falling pipe 4, the sand collection
inverted bucket 5 and the experiment object to all fall onto the
automatic weighing machine 7 within this period of time, and then
the automatic weighing machine 7 calculates the weight of the sand
thereon at this moment, and the weight is displayed on the PLC
display 27;
[0055] (4) the PLC display 27 displays the current total amount and
the accumulated weight of the sand weighed by the automatic
weighing machine and the number of times of weighing;
[0056] (5) the travel limiting switch is mounted on the guide rail
slot 20 on the weighing machine bracket 21 to determine the travel
of the horizontal back and forth motion of the automatic weighing
machine 7;
[0057] (6) the first speed reduction motor 19 is started to pull
the automatic weighing machine 7 to do a horizontal motion towards
the weighing machine bracket 21; under the cooperation of the sand
collection inverted bucket 5, the sand on the automatic weighing
machine 7 all falls into the bottom of the abrasion device in this
process; after the automatic weighing machine 7 is pulled to a
certain position and the sand on the surface thereof all falls into
the bottom of the abrasion device, the first speed reduction motor
19 starts to rotate anticlockwise to re-push the automatic weighing
machine 7 back to a position under the sand collection inverted
bucket 5, and then stops the operation; and
[0058] Step V: the abrasion device starts to automatically operate
according to the programs set in Step IV, and stops the operation
at set operation time, so no specially-assigned person needs to pay
extra attention beside.
[0059] The transport belt tightening device 11 is particularly
disposed to prevent that the lengthening of the belt due to
long-term use affects the equipment operation. Tiny dust produced
in the operation process of the abrasion device can be discharged
from the vent 10.
[0060] Visibly, the application provides an automatic sand abrasion
device comprising a shell, an integrated framework, a sand falling
mechanism, a sand transport mechanism, a sand falling channel, a
sample working frame and a circuit control cabinet. The device
adopts the transport belt and the second speed reduction motor to
realize transportation of sand, and realizes that the weighed sand
falls into the bottom of the abrasion device through the first
speed reduction motor and the automatic weighing machine; the whole
process can be automatically operated while parameters such as the
operation time and the weight of abrasion sand are set, so that the
detection efficiency for the abrasion resistance can be improved,
the labor cost is greatly reduced; and meanwhile, the device is
firm in structure and stable and reliable in work and improves the
accuracy and efficiency of an experiment.
* * * * *