U.S. patent application number 16/087632 was filed with the patent office on 2020-09-17 for frame element with a support head, and building scaffold comprising such a frame element.
The applicant listed for this patent is Peri GmbH. Invention is credited to Andreas Meyer, Erzad Mikic, Andrew Read, Rudolf Specht.
Application Number | 20200291666 16/087632 |
Document ID | / |
Family ID | 1000004897584 |
Filed Date | 2020-09-17 |
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United States Patent
Application |
20200291666 |
Kind Code |
A1 |
Meyer; Andreas ; et
al. |
September 17, 2020 |
FRAME ELEMENT WITH A SUPPORT HEAD, AND BUILDING SCAFFOLD COMPRISING
SUCH A FRAME ELEMENT
Abstract
The invention relates to a frame element (10) comprising a frame
pipe (12) into which a threaded spindle (16) is partly introduced
at one end. The threaded spindle (16) is guided in the frame pipe
(12) by at least one spindle positioning groove (24, 26, 28), in
particular multiple spindle positioning grooves (24, 26, 28). The
frame pipe (12) is mechanically reinforced by the spindle
positioning groove(s) (24, 26, 28) in the region of the threaded
spindle (16) received in the frame pipe (12). At the same time, the
maximum inclination of the threaded spindle (16) in the frame pipe
(12) is reduced by the spindle positioning grooves (24, 26, 28).
Overall, a force can thus be substantially more strongly applied to
the frame element (10) in the direction of the longitudinal axis
(23b) of the frame pipe (12). At the other end, the frame pipe (12)
has at least one pin positioning groove (40, 42), in particular
multiple pin positioning grooves (40, 42). Alternatively or in
addition thereto, the frame pipe (12) can have at least one
reinforcing groove in the region of a node point. Alternatively or
in addition thereto, the frame pipe (12) can have at least one
additional reinforcing groove between two node points.
Inventors: |
Meyer; Andreas; (Kempten,
DE) ; Mikic; Erzad; (Karlsruhe, DE) ; Read;
Andrew; (Ulm, DE) ; Specht; Rudolf; (Neu-Ulm,
DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Peri GmbH |
Weissenhorn |
|
DE |
|
|
Family ID: |
1000004897584 |
Appl. No.: |
16/087632 |
Filed: |
March 1, 2017 |
PCT Filed: |
March 1, 2017 |
PCT NO: |
PCT/EP2017/054773 |
371 Date: |
September 21, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E04G 25/065 20130101;
E04G 2001/158 20130101; E04G 7/32 20130101; E04G 7/301 20130101;
E04G 7/20 20130101; E04G 7/307 20130101 |
International
Class: |
E04G 7/30 20060101
E04G007/30; E04G 7/32 20060101 E04G007/32 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 22, 2016 |
DE |
10 2016 204 694.2 |
Claims
1. A frame element (10) fora building scaffold (74), the frame
element (10) having the following: a) A support head (76) having a
threaded spindle (16); b) a frame pipe (12) that can be mounted
vertically in the building scaffold (74) having a spindle receiving
portion (14) on a first axial frame pipe end (34), the threaded
spindle (16) being introduced partially into the spindle receiving
portion (14); c) a spindle nut (20) mounted to the threaded spindle
(16), the support head (76) introducing its vertical load into the
frame pipe (12) via the threaded spindle (16) in the mounted state
of the frame element (10). characterized in that the spindle
receiving portion (14) has a first spindle positioning groove (24)
that reduces the inner diameter of frame pipe (12).
2. The frame element according to claim 1, characterized in that
the first spindle positioning groove (24) radially centers the
threaded spindle (16) in the frame pipe (12) in such a way that the
longitudinal axis (23a) of the threaded spindle (16) is inclined at
the angle relative to the longitudinal axis (23b) of the frame pipe
(12), the angle being less than 1.degree..
3. The frame element according to claim 1 or 2, characterized in
that the first spindle positioning groove (24) extends in the
circumferential direction of the frame pipe (12), the first spindle
positioning groove (24) being designed to be discontinuous or
circumferential in the circumferential direction of the frame pipe
(12).
4. The frame element according to any of the preceding claims,
characterized in that the axial spacing of the first spindle
positioning groove (24) from the first axial frame pipe end (34) is
smaller than the inner diameter of the spindle receiving portion
(14).
5. The frame element according to any of the preceding claims,
characterized in that the spindle receiving portion (14) has a
second spindle positioning groove (26) that is axially spaced apart
from the first spindle positioning groove (24) and reduces the
inner diameter of the frame pipe (12).
6. The frame element according to claim 5, characterized in that
the spindle receiving portion (14) has a third spindle positioning
groove (28) that is axially further spaced from the first spindle
positioning groove (24) than the second spindle positioning groove
(26) and reduces the inner diameter of the frame pipe (12).
7. The frame element according to claim 6, characterized in that
the third spindle positioning groove (28) is axially spaced not as
far from the second spindle positioning groove (26) as the second
spindle positioning groove (26) is from the first spindle
positioning groove (24).
8. The frame element according to any of the preceding claims,
characterized in that the frame pipe (12) has a pin receiving
portion (38) at its second axial frame pipe end (36) into which a
pin (32) of a further frame element (30) can be introduced, the pin
receiving portion (38) having a first pin positioning groove (40)
that reduces the inner diameter of the frame pipe (12).
9. The frame element according to claim 8, characterized in that
the pin receiving portion (38) has a second pin positioning groove
(42) that is axially spaced apart from the first pin positioning
groove (40) and reduces the inner diameter of the frame pipe
(12).
10. The frame element according to any of the preceding claims,
characterized in that the frame pipe (12) has a node point (44) on
which a) a crossbar (48, 50) of the frame element (10) is connected
to the frame pipe (12), or b) a coupling point (46), in particular
in the form of a rosette, is designed for connecting a crossbar
(48, 50), the frame pipe (12) having a first reinforcing groove
(54) in the region of the node point (44) that is spaced less than
15 cm from the node point (44) in a first axial direction (56) and
i. reduces the inner diameter of frame pipe (12) or ii. increases
the outer diameter of frame pipe (12).
11. The frame element according to claim 10, characterized in that
the frame pipe (12) has a further reinforcing nut (64) in the
region of the node point (44) that is spaced less than 15 cm from
the node point (44) in a second axial direction (66) opposite the
first axial direction (56) and i. reduces the inner diameter of
frame pipe (12) or ii. increases the outer diameter of frame pipe
(12).
12. A building scaffold (74) having a frame element (10) according
to any of the preceding claims.
Description
[0001] The invention relates to a frame element for a building
scaffold, the frame element having the following: [0002] a) A
support head having a threaded spindle; [0003] b) a frame pipe that
can be mounted vertically in the building scaffold having a spindle
receiving portion on a first axial frame pipe end, the threaded
spindle being introduced partially into the spindle receiving
portion; [0004] c) a spindle nut mounted to the threaded spindle,
the support head introducing its vertical load into the frame pipe
via the threaded spindle in the mounted state of the frame
element.
[0005] The previously described support head of the frame element
generally serves to transfer a vertical load to a building
scaffold. For example, a concrete formwork can be placed or mounted
onto the support head. Furthermore, the support head can be used as
temporary support during refurbishing.
[0006] The object of the present invention is to provide a frame
element that can transfer significantly more vertical load via the
support head without being significantly bulkier and heavier. The
object of the present invention is also to provide a building
scaffold having such a frame element.
[0007] The object according to the invention is achieved by a frame
element having the features of claim 1 and a building scaffold
according to claim 12. The dependent claims specify useful further
developments.
[0008] The object according to the invention is thus solved by a
frame element for a building scaffold. The frame element has a
support head having a threaded spindle. The frame element also has
a frame pipe having a spindle receiving portion. The threaded
spindle is partially introduced into the spindle receiving portion.
The spindle receiving portion is on a first axial end of the frame
pipe. A spindle nut is mounted to the threaded spindle in such a
way that the support head introduces its load into the frame pipe
via the threaded spindle in the mounted vertical state of the frame
element. The spindle receiving portion has a first spindle
positioning nut that reduces the inner diameter of the frame
pipe.
[0009] The first spindle positioning groove significantly improves
the vertical load bearing capacity of the frame element without
considerably increasing the weight of the frame element. The first
spindle positioning groove increases the load bearing capacity of
the frame element in two respects: On the one hand, the solidity of
the frame pipe is increased in the region of the first spindle
positioning groove due to the configuration of the first spindle
positioning groove. On the other hand, the threaded spindle is
oriented better in the frame pipe thanks to the reduced diameter of
the frame pipe on the first spindle positioning groove. Overall,
this results in the significantly improved suitability of the frame
element for vertical load transfer.
[0010] The threaded spindle is preferably oriented as centered as
possible in the frame pipe by the spindle positioning groove, a
clearance fit being present between the threaded spindle and frame
pipe for introducing the threaded spindle into the frame pipe. The
longitudinal axis of the threaded spindle has the angle relative to
the longitudinal axis of the frame pipe, the angle being less than
1.degree., in particular less than 0.8.degree., preferably less
than 0.7.degree.. As a result, the vertical load is guided into the
frame pipe as centrally as possible to keep the moments occurring
in the building scaffold to a minimum.
[0011] The first spindle positioning groove can extend parallel to
the longitudinal axis of the frame pipe. At least three grooves
distributed across the circumference of the frame pipe are
preferably provided for orienting the threaded spindle. In a
preferred embodiment of the first spindle positioning groove,
however, it extends in the circumferential direction of the frame
pipe. The first spindle positioning groove can be designed to be
discontinuous or circumferential in the circumferential direction
of the frame pipe.
[0012] Particularly effective centering of the threaded spindle in
the frame pipe is done when the axial spacing of the first spindle
positioning groove from the first axial frame pipe end is smaller
than the inner diameter of the spindle receiving portion.
[0013] More preferably, the spindle receiving portion preferably
has a second spindle positioning groove. The second spindle
positioning groove is axially spaced apart from the first spindle
positioning groove and reduces the inner diameter of the frame
pipe. Due to the second spindle positioning groove, the orientation
of the threaded spindle in the frame pipe is defined by at least
two spindle positioning grooves that are spaced axially apart from
each other, as a result of which the orientation, in particular the
centering, of the threaded spindle is particularly precise.
[0014] The second spindle positioning groove can extend parallel to
the longitudinal axis of the frame pipe. At least three grooves
distributed across the circumference of the frame pipe are
preferably provided for orienting the threaded spindle. As an
alternative to this, the second spindle positioning groove can
extend in the circumferential direction of the frame pipe. The
second spindle positioning groove can be designed to be
discontinuous or circumferential in the circumferential direction
of the frame pipe.
[0015] In a more preferred embodiment of the invention, the spindle
receiving portion has a third spindle positioning groove. The third
spindle positioning groove is spaced axially further away from the
first spindle positioning groove than the second spindle
positioning groove. The third spindle positioning nut reduces the
inner diameter of the frame pipe. The third spindle positioning
groove improves the orientation, in particular the centering, of
the threaded spindle in the frame pipe.
[0016] The third spindle positioning groove can extend parallel to
the longitudinal axis of the frame pipe. At least three grooves
distributed across the circumference of the frame pipe are
preferably provided for orienting the threaded spindle. As an
alternative to this, the third spindle positioning groove can
extend in the circumferential direction of the frame pipe. The
third spindle positioning nut groove can be designed to be
discontinuous or circumferential in the circumferential direction
of the frame pipe.
[0017] The third spindle positioning groove is preferably spaced
less axially far apart from the second spindle positioning groove
than the second spindle positioning groove is from the first
spindle positioning groove.
[0018] Particularly preferably, the second spindle positioning
groove and/or the third spindle positioning groove reduces the
inner diameter of the frame pipe just as much as the first spindle
positioning groove. The radial play of the threaded spindle in the
frame pipe is reduced significantly as a result of this, it
nevertheless remaining easy to introduce the threaded spindle into
the frame pipe.
[0019] On its second axial frame pipe end, which is opposite the
first axial frame pipe end, the frame pipe can have a pin receiving
portion into which a pin of a further frame element can be
introduced. The pin receiving portion can have a first pin
positioning groove that reduces the inner diameter of the frame
pipe. The first pin positioning groove mechanically reinforces the
frame pipe in the region of the pin receiving portion.
[0020] The first pin positioning groove can extend parallel to the
longitudinal axis of the frame pipe. At least three grooves
distributed across the circumference of the frame pipe are
preferably provided for orienting the threaded spindle. As an
alternative to this, the first pin positioning groove can extend in
the circumferential direction of the frame pipe. The first pin
positioning groove can be designed to be discontinuous or
circumferential in the circumferential direction of the frame
pipe.
[0021] The axial spacing of the first pin positioning groove from
the second axial frame pipe end is preferably smaller than the
inner diameter of the first pin positioning groove.
[0022] More preferably, the pin receiving portion has a second pin
positioning groove that is axially spaced apart from the first pin
positioning groove and reduces the inner diameter of the frame
pipe. As a result, the pin of a further frame element is centered
at two pin positioning grooves in the pin receiving portion that
are spaced axially apart from each other.
[0023] The second pin positioning groove can extend parallel to the
longitudinal axis of the frame pipe. At least three grooves
distributed across the circumference of the frame pipe are
preferably provided for orienting the threaded spindle. As an
alternative to this, the second pin positioning groove can extend
in the circumferential direction of the frame pipe. The second pin
positioning nut groove can be designed to be discontinuous or
circumferential in the circumferential direction of the frame
pipe.
[0024] In a more preferred embodiment of the frame element, the
frame pipe has a node point on which [0025] a) a crossbar of the
frame element is connected to the frame pipe, or [0026] b) a
coupling point is installed for connecting a crossbar, the frame
pipe having a first reinforcing groove in the region of the node
point. The first reinforcing groove is spaced less than 15 cm from
the node point in a first axial direction and reduces the inner
diameter of the frame pipe or increases the outer diameter of the
frame pipe. Due to the first reinforcing groove, the frame element
is reinforced in an area in which it is loaded particularly
heavily, namely in the region of the node point. Due to the first
reinforcing groove, the frame pipe offers a higher resistance and
moment of inertia in the region of the pressure point of the
crossbar. The coupling point can be designed in the form of a
rosette for connecting a crossbar.
[0027] More preferably, the frame pipe has a further reinforcing
groove in the region of the node point that is spaced less than 15
cm from the node point in a second axial direction and reduces the
inner diameter of the frame pipe or increases the outer diameter of
the frame pipe. The second axial direction is opposite the first
axial direction. In other words, the node point is reinforced by a
further reinforcing groove in both axial directions by one
reinforcing groove in each case.
[0028] The spindle positioning groove(s) and the reinforcing
groove(s) preferably reduces the inner diameter of the frame pipe
to the same extent.
[0029] The object according to the invention is also solved by a
building scaffold having a previously described frame element.
[0030] Further features and advantages of the invention are
presented in the following detailed description of multiple
exemplary embodiments of the invention, in the claims and based on
the figures of the drawing that shows details that are essential to
the invention.
[0031] The features shown in the drawing are depicted in such a way
that the special features according to the invention can be made
clearly visible. The various features can each be realized in
variants of the invention individually or in groups in any
combination.
[0032] Shown are:
[0033] FIG. 1 a sectional view of a frame element from the prior
art;
[0034] FIG. 2 a sectional view of a frame element according to the
invention;
[0035] FIG. 3 a top view of a node point of a frame element
according to the invention; and
[0036] FIG. 4 a perspective view of a building scaffold according
to the invention.
[0037] FIG. 1 shows a frame element 10 according to the prior art.
Frame element 10 has a frame pipe 12. A spindle receiving portion
14 is designed in frame pipe 12. A threaded spindle 16 is
introduced into spindle receiving portion 14. Threaded spindle 16
has an external thread 18. Known frame element 10 also has a
spindle nut 20. Spindle nut 20 has an internal thread 22 with which
spindle nut 20 is attached to external thread 18 of threaded
spindle 16.
[0038] Spindle receiving portion 14 has the same inner diameter
along the entire axial direction. Threaded spindle 16, which is
supported axially via spindle nut 20 on frame pipe 12, has a
position skewed at angle . More specifically, longitudinal axis 23a
of threaded spindle 16 is inclined by angle relative to
longitudinal axis 23b of frame pipe 12. The angle is typically
1.29.degree..
[0039] In contrast to FIG. 1, FIG. 2 shows a frame element 10
according to the invention. According to FIG. 2, frame element 10
has a frame pipe 12 with a spindle receiving portion 14.
Furthermore, frame element 10 has a threaded spindle 16 on which a
spindle nut 20 is arranged. Spindle receiving portion 14 has a
first spindle positioning groove 24, a second spindle positioning
groove 26 and a third spindle positioning groove 28. Spindle
positioning grooves 24, 26, 28 define the effective inner diameter
of spindle receiving portion 14 for threaded spindle 16. Due to
spindle positioning grooves 24, 26, 28, threaded spindle 16 is
arranged in frame pipe 12 at a much smaller inclination. The angle
between longitudinal axis 23a of threaded spindle 16 and
longitudinal axis 23b of frame pipe 12 is, in particular, less than
0.8.degree., preferably less than 0.7.degree.. In comparison to
frame element 10 according to FIG. 1, the vertical load bearing
capacity of frame element 10 is increased by approximately 10% as a
result. In addition thereto, the spindle receiving portion is
mechanically reinforced against kinking by spindle positioning
grooves 24, 26, 28.
[0040] FIG. 2 depicts a further frame element 30 (dashed lines)
whose pin 32 can be introduced into frame pipe 12.
[0041] Frame pipe 12 thus has a first axial frame pipe end 34 into
which threaded spindle 16 can be introduced. Furthermore, frame
pipe 12 has a second axial frame pipe end 36 into which pin 32 of
further frame element 30 can be introduced. A pin receiving portion
38 for receiving pin 32 in frame pipe 12 is designed on second
axial frame pipe end 36. A mechanical reinforcement of pin
receiving portion 38 as well as improved centering of pin 32 is
done by a first pin positioning groove 40 and a second pin
positioning groove 42.
[0042] FIG. 3 shows a further frame element according to the
invention 10. Frame element 10 has a node point 44 having a
coupling point 46. In the present case, coupling point 46 is
designed in the form of a rosette. Crossbars 48, 50 are arranged at
coupling point 46.
[0043] It is evident from FIG. 3 that frame pipe 12 has a first
reinforcing groove 54 which is designed to be spaced apart from
coupling point 46 in frame pipe 12 in a first axial direction 56. A
second reinforcing groove 58 is designed in frame pipe 12 in first
axial direction 56 at a distance from coupling point 46. Shoulders
60, 62 of crossbars 48, 50 are in the region of frame pipe 12
between first reinforcing groove 54 and second reinforcing groove
58 on frame pipe 12. First reinforcing groove 54 and second
reinforcing groove 58 thus form an area of frame pipe 12 that is
mechanically especially stable in which, in particular, the
mechanical stability against buckling of frame pipe 12 is very
high.
[0044] Frame pipe 12 has a further reinforcing groove 64. Further
reinforcing groove 64 is spaced apart from coupling point 46 in a
second axial direction 66. First axial direction 56 and second
axial direction 66 run along longitudinal axis 23b of frame pipe
12, second axial direction 66 being opposite first axial direction
56. Further reinforcing groove 64 allows insertion tabs 68, 70 of
crossbars 48, 50 to be pressed mechanically against frame pipe 12
particularly firmly without resulting in the plastic deformation of
frame pipe 12 when crossbar 48 and/or 50 is loaded.
[0045] Alternatively or in addition to described reinforcing
grooves 54, 58, 64, frame element 10 can be designed with at least
one additional reinforcing groove 72 in frame pipe 12 between
axially adjacent coupling points, of which only one coupling point
46 is depicted in FIG. 3.
[0046] FIG. 4 shows a building scaffold 74 having multiple frame
elements, of which only a first frame element 10 is provided with a
reference character in FIG. 4 for the sake of clarity. By way of
example, frame element 10 has a node point 44 on which--likewise by
way of example--a crossbar 48 is arranged. Because of the small
depiction of building scaffold 74, no groove according to the
invention is visible in FIG. 4. For the removal of a load, frame
element 10 has a support head 76.
[0047] When viewing all figures of the drawing together, the
invention relates, in summary, to a frame element 10 comprising a
frame pipe 12 into which a threaded spindle 16 is partly introduced
at one end. Threaded spindle 16 is guided in frame pipe 12 by at
least one spindle positioning groove 24, 26, 28, in particular
multiple spindle positioning grooves 24, 26, 28. Frame pipe 12 is
mechanically reinforced by spindle positioning groove(s) 24, 26, 28
in the region of threaded spindle 16 received in frame pipe 12. At
the same time, the maximum inclination of threaded spindle 16 in
frame pipe 12 is reduced by spindle positioning groove(s) 24, 26,
28. Overall, a force can thus be substantially more strongly
applied to frame element 10 in the direction of longitudinal axis
23b of frame pipe 12. At the other end, frame pipe 12 can have at
least one pin positioning groove 40, 42, in particular multiple pin
positioning grooves 40, 42. Alternatively or in addition thereto,
frame pipe 12 can have at least one reinforcing groove 54, 58, 64
in the region of a node point 44. Alternatively or in addition
thereto, frame pipe 12 can have at least one additional reinforcing
groove 72 between two node points 44.
* * * * *