U.S. patent application number 16/477819 was filed with the patent office on 2020-04-23 for energy absorbing device for subway vehicle.
This patent application is currently assigned to CRRC CHANGCHUN RAILWAY VEHICLES CO., LTD.. The applicant listed for this patent is CRRC CHANGCHUN RAILWAY VEHICLES CO., LTD.. Invention is credited to Ziwen FANG, Haifeng HONG, Hongtao LIU, Qi LUO, Jianran WANG, Kefei WANG, Qingsong YU.
Application Number | 20200122752 16/477819 |
Document ID | / |
Family ID | 61896159 |
Filed Date | 2020-04-23 |
United States Patent
Application |
20200122752 |
Kind Code |
A1 |
LUO; Qi ; et al. |
April 23, 2020 |
ENERGY ABSORBING DEVICE FOR SUBWAY VEHICLE
Abstract
An energy absorbing device for subway vehicle includes a movable
anti-climber, a fixed anti-climber, an energy absorbing honeycomb,
at least one collapse tube, two sliding-groove assemblies and two
guide sliding rails. As the first stage energy absorbing unit of
the total structure, the energy absorbing honeycomb directly bears
the collision impact transferred from the movable anti-climber.
Through the deformation of the energy absorbing honeycomb itself
under pressure, the collision kinetic energy transfers into
internal energy of deformation and heat, thus realizing the energy
absorbing buffering. As the second stage energy absorbing buffering
unit, the at least one collapse tube further absorbs the collision
energy, thus further buffering and protecting the underframe of the
vehicle body, as well as ensuring that the impact energy performs a
multistage and serial operation according to a predetermined
direction and sequence, thereby ensuring the reliability of
operation of the energy absorbing device.
Inventors: |
LUO; Qi; (Changchun, Jilin,
CN) ; LIU; Hongtao; (Changchun, Jilin, CN) ;
WANG; Kefei; (Changchun, Jilin, CN) ; FANG;
Ziwen; (Changchun, Jilin, CN) ; WANG; Jianran;
(Changchun, Jilin, CN) ; HONG; Haifeng;
(Changchun, Jilin, CN) ; YU; Qingsong; (Changchun,
Jilin, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CRRC CHANGCHUN RAILWAY VEHICLES CO., LTD. |
Changchun, Jilin |
|
CN |
|
|
Assignee: |
CRRC CHANGCHUN RAILWAY VEHICLES
CO., LTD.
Changchun, Jilin
CN
|
Family ID: |
61896159 |
Appl. No.: |
16/477819 |
Filed: |
November 13, 2018 |
PCT Filed: |
November 13, 2018 |
PCT NO: |
PCT/CN2018/115153 |
371 Date: |
July 12, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B61D 15/06 20130101;
B61F 19/04 20130101; B61D 17/06 20130101 |
International
Class: |
B61F 19/04 20060101
B61F019/04; B61D 15/06 20060101 B61D015/06 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 14, 2017 |
CN |
201711120230.1 |
Claims
1. An energy absorbing device for subway vehicle, comprising: a
movable anti-climber, a fixed anti-climber, an energy absorbing
honeycomb, at least one collapse tube, two sliding-groove
assemblies, and two guide sliding rails, wherein a storage chamber
having an opening at a front end of the storage chamber is provided
in a middle section of the fixed anti-climber, the energy absorbing
honeycomb is inserted into the storage chamber, a rear end of the
movable anti-climber and a front end of the fixed anti-climber are
connected by two long bolts of the movable anti-climber, and the
rear end of the movable anti-climber makes the energy absorbing
honeycomb to be retained in the storage chamber of the fixed
anti-climber; the at least one collapse tube is perpendicularly
fixed to a rear end of the fixed anti-climber; the two
sliding-groove assemblies are symmetrically fixed to outer side
walls at left and right ends of the fixed anti-climber; and the two
guide sliding rail are parallelly disposed at the left and right
ends of the fixed anti-climber, and each of the guide sliding rails
is slidably connected with one corresponding sliding-groove
assembly.
2. The energy absorbing device for subway vehicle according to
claim 1, wherein the movable anti-climber comprises three flat
plates, two side upright plates and a middle upright plate, wherein
the three flat plates are parallel to each other, forming a flat
plate group, and left and right ends of the flat plate group are
both fixed to one corresponding side upright plate; and rectangle
through grooves are opened in a middle portion of each of the three
flat plates, and the middle upright plate successively passes
through the respective rectangle through grooves of the three flat
plates and is fixed to the three flat plates respectively.
3. The energy absorbing device for subway vehicle according to
claim 2, wherein at least one row of through holes are opened at a
front end of each of the three flat plates.
4. The energy absorbing device for subway vehicle according to
claim 1, wherein the fixed anti-climber comprises: a left
anti-collision box; a right anti-collision box; a rear end beam of
the storage chamber, which is located between the left
anti-collision box and the right anti-collision box and is used to
fix rear portions of opposite side walls of the left anti-collision
box and the right anti-collision box; an upper cover plate of the
storage chamber; a lower cover plate of the storage chamber; and
two sliding-groove fixing seats; wherein a plurality of reinforcing
rib plates are respectively arranged on the rear end beam of the
storage chamber and arranged in the left anti-collision box and the
right anti-collision box in a longitudinal direction of the vehicle
body; the left anti-collision box and the right anti-collision box
are symmetrical on the left and right; left and right ends of the
lower cover plate of the storage chamber are respectively welded to
lower edges of the opposite side walls of the left anti-collision
box of the fixed anti-climber and the right anti-collision box of
the fixed anti-climber, and a rear end of the lower cover plate of
the storage chamber supports a bottom end of the rear end beam of
the storage chamber and is fixed to the bottom end of the rear end
beam of the storage chamber; left and right ends of the upper cover
plate of the storage chamber are respectively welded to upper edges
of the opposite side walls of the left anti-collision box and the
right anti-collision box, and a rear end of the upper cover plate
of the storage chamber covers an upper end of the rear end beam of
the storage chamber and is fixed to the upper end of the rear end
beam of the storage chamber; and the front end of the at least one
collapse tube is perpendicularly fixed to the rear end of the fixed
anti-climber.
5. The energy absorbing device for subway vehicle according to
claim 4, wherein a mounting hole is opened in an upper surface of
each of the right anti-collision box and the left anti-collision
box and is used to assemble a front end framework of a head car of
the subway vehicle, and the energy absorbing honeycomb is in front
of the front end framework, and the at least one collapse tube is
behind the front end framework, and the two guide sliding rails are
fixed to an underframe of a vehicle body of the head car of the
subway vehicle.
6. The energy absorbing device for subway vehicle according to
claim 1, wherein a part of the movable anti-climber is inserted
into the storage chamber and the front end of the movable
anti-climber extends out from the storage chamber, so that the
energy absorbing honeycomb is completely closed in the storage
chamber of the fixed anti-climber by the rear end of the movable
anti-climber.
7. The energy absorbing device for subway vehicle according to
claim 6, wherein anti-collision strengths of the movable
anti-climber, the energy absorbing honeycomb, the fixed
anti-climber and the at least one collapse tube decrease in a
following sequence: the fixed anti-climber, the movable
anti-climber, the at least one collapse tube, the energy absorbing
honeycomb.
8. The energy absorbing device for subway vehicle according to
claim 7, wherein each of the two sliding-groove assemblies
comprises: an upper module, a lower module, and a plurality of
connecting bolts of the sliding-groove, wherein the upper module
comprises a sliding-groove portion of the upper module and a
butting portion of the upper module, and a plurality of threaded
blind holes are provided in the butting portion of the upper
module, the sliding-groove portion of the upper module has a
structure of inverted right-angle step, and the upper module is
connected to a transverse outer side wall of the left
anti-collision box or the right anti-collision box; an upper
surface of the upper module is fixed to the sliding-groove fixing
seat on the transverse outer side wall of the left anti-collision
box or the right anti-collision box; the lower module comprises a
sliding-groove portion of the lower module and a butting portion of
the lower module, and a plurality of threaded through holes are
provided in the butting portion of the lower module, and the
sliding-groove portion of the lower module has a structure of
right-angle step; the butting portion of the upper module and the
butting portion of the lower module are tightly fitted to each
other, and the plurality of connecting bolts of the sliding-groove
respectively pass through the plurality of threaded through holes
in the butting portion of the lower module to be fixed to the
plurality of threaded blind holes in the butting portion of the
upper module; the sliding-groove portion of the upper module having
the structure of inverted right-angle step and the sliding-groove
portion of the lower module having the structure of right-angle
step are combined together to form an integrated sliding-groove;
and rail surfaces of bosses of the two guide sliding rails are
respectively inserted into the two sliding-groove assemblies from a
horizontal direction, so that the fixed anti-climber is slidable
along the two guide sliding rails.
9. The energy absorbing device for subway vehicle according to
claim 8, wherein thicknesses of the bosses of the two guide sliding
rails decrease from front to back, forming a wedge-shaped rail, and
when the sliding-groove assembly slides into the guide sliding rail
from front to back, a gap between the sliding-groove assembly and
the guide sliding rail increases gradually.
10. The energy absorbing device for subway vehicle according to
claim 9, wherein a trigger force of the at least one collapse tube
is at least 1.3 times of a trigger force of the energy absorbing
honeycomb, and a maximum energy absorption of the at least one
collapse tube is at least 5 times of a maximum energy absorption of
the energy absorbing honeycomb.
11. A method for installing the energy absorbing device for subway
vehicle according to claim 6, comprising: Step 1, respectively
fixing rear ends of the two guide sliding rails and a rear end of
the at least one collapse tube to the underframe of the vehicle
body; Step 2, inserting the energy absorbing honeycomb and a
honeycomb-shaped internal chamber therein into the storage chamber
of the fixed anti-climber in a longitudinal direction of the
vehicle body; Step 3, inserting the rear end of the movable
anti-climber into the storage chamber of the fixed anti-climber,
such that the front end of the movable anti-creep chamber extends
out from the storage chamber; and Step 4, movably connecting the
movable anti-climber with the fixed anti-climber respectively by
two long bolts of the movable anti-climber.
12. The energy absorbing device for subway vehicle according to
claim 2, wherein a part of the movable anti-climber is inserted
into the storage chamber and the front end of the movable
anti-climber extends out from the storage chamber, so that the
energy absorbing honeycomb is completely closed in the storage
chamber of the fixed anti-climber by the rear end of the movable
anti-climber.
13. The energy absorbing device for subway vehicle according to
claim 3, wherein a part of the movable anti-climber is inserted
into the storage chamber and the front end of the movable
anti-climber extends out from the storage chamber, so that the
energy absorbing honeycomb is completely closed in the storage
chamber of the fixed anti-climber by the rear end of the movable
anti-climber.
14. The energy absorbing device for subway vehicle according to
claim 4, wherein a part of the movable anti-climber is inserted
into the storage chamber and the front end of the movable
anti-climber extends out from the storage chamber, so that the
energy absorbing honeycomb is completely closed in the storage
chamber of the fixed anti-climber by the rear end of the movable
anti-climber.
15. The energy absorbing device for subway vehicle according to
claim 5, wherein a part of the movable anti-climber is inserted
into the storage chamber and the front end of the movable
anti-climber extends out from the storage chamber, so that the
energy absorbing honeycomb is completely closed in the storage
chamber of the fixed anti-climber by the rear end of the movable
anti-climber.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of priority to Chinese
Patent Application No. 201711120230.1, titled "ENERGY ABSORBING
DEVICE FOR SUBWAY VEHICLE", filed with the Chinese State
Intellectual Property Office on Aug. 28, 2017, the entire
disclosure of which is incorporated herein by reference.
FIELD
[0002] The present application relates to the field of
anti-collision and energy absorbing device for head car of rail
vehicles, and specifically to a front end energy absorbing device
for subway vehicle.
BACKGROUND
[0003] An anti-collision and energy absorbing device is generally
provided at the front end of the head car of rail vehicles. The
conventional subway vehicles having an energy absorbing device
usually have a structure of the underframe structure of vehicle
body and the energy absorbing device being integrally designed. In
the above structure, the energy absorbing device and the underframe
of vehicle body are formed integrally. When collision occurs at the
front end of the rail vehicle, the energy absorbing device and the
underframe of the vehicle body bear the impulse of impact together,
absorb the impulse and transfer the impulse into strain energy.
Meanwhile, the structure of both the underframe of the vehicle body
and the energy absorbing device suffer irreversible deformation and
damage. Even under the conditions of low speed collisions, the
underframe of the vehicle body cannot be replaced or maintained any
more. That is, a slight collision may lead to overhaul or scrapping
of the vehicle. Thus, the conventional structure form that the
underframe of the vehicle body and the energy absorbing device are
integrally designed cannot satisfy new requirements of procurement
users of trains on safety and maintenance capacity of vehicles.
[0004] In order to make the subway vehicles not to be directly
scrapped or be overhauled after the collision, especially after the
low-speed collision, a device having multi-stage energy absorption
is urgently needed to be developed, in which a first-stage energy
absorbing unit can be replaced or repaired on the premise that the
underframe of vehicle body is not deformed under impact, thereby
meeting the requirements of user.
SUMMARY
[0005] In order to solve the technical problem that the
conventional energy absorbing device of the subway vehicle cannot
be replaced separately after the subway vehicle suffers collision,
which is caused by the integrated designed underframe structure of
vehicle body and the energy absorbing device, an energy absorbing
device for subway vehicle is provided according to the present
application.
[0006] The technical solution used in the present application will
be illustrated hereinafter.
[0007] The device includes a movable anti-climber, a fixed
anti-climber, an energy absorbing honeycomb, at least one collapse
tube, two sliding-groove assemblies, and two guide sliding rails. A
storage chamber having an opening at a front end of the storage
chamber is provided in a middle section of the fixed anti-climber,
the energy absorbing honeycomb is inserted into the storage
chamber, a rear end of the movable anti-climber and a front end of
the fixed anti-climber are connected by two long bolts of the
movable anti-climber, and the rear end of the movable anti-climber
makes the energy absorbing honeycomb to be retained in the storage
chamber of the fixed anti-climber. The at least one collapse tube
is perpendicularly fixed to a rear end of the fixed anti-climber.
The two sliding-groove assemblies are symmetrically fixed to outer
side walls at left and right ends of the fixed anti-climber. The
two guide sliding rail are parallelly disposed at the left and
right ends of the fixed anti-climber, and each of the guide sliding
rails is slidably connected with one corresponding sliding-groove
assembly.
[0008] Preferably, the movable anti-climber includes three flat
plates, two side upright plates and a middle upright plate. The
three flat plates are parallel to each other, forming a flat plate
group, and left and right ends of the flat plate group are both
fixed to one corresponding side upright plate. Rectangle through
grooves are opened in a middle portion of each of the three flat
plates, and the middle upright plate successively passes through
the respective rectangle through grooves of the three flat plates
and is fixed to the three flat plates respectively.
[0009] Preferably, at least one row of through holes are opened at
a front end of each of the three flat plates.
[0010] Preferably, the fixed anti-climber includes: a left
anti-collision box; a right anti-collision box; a rear end beam of
the storage chamber, which is located between the left
anti-collision box and the right anti-collision box and is used to
fix rear portions of opposite side walls of the left anti-collision
box and the right anti-collision box; an upper cover plate of the
storage chamber; a lower cover plate of the storage chamber; and
two sliding-groove fixing seats. A plurality of reinforcing rib
plates are respectively arranged on the rear end beam of the
storage chamber and arranged in the left anti-collision box and the
right anti-collision box in a longitudinal direction of the vehicle
body. The left anti-collision box and the right anti-collision box
are symmetrical on the left and right. Left and right ends of the
lower cover plate of the storage chamber are respectively welded to
lower edges of the opposite side walls of the left anti-collision
box of the fixed anti-climber and the right anti-collision box of
the fixed anti-climber, and a rear end of the lower cover plate of
the storage chamber supports a bottom end of the rear end beam of
the storage chamber and is fixed to the bottom end of the rear end
beam of the storage chamber. Left and right ends of the upper cover
plate of the storage chamber are respectively welded to upper edges
of the opposite side walls of the left anti-collision box and the
right anti-collision box, and a rear end of the upper cover plate
of the storage chamber covers an upper end of the rear end beam of
the storage chamber and is fixed to the upper end of the rear end
beam of the storage chamber. The front end of the at least one
collapse tube is perpendicularly fixed to the rear end of the fixed
anti-climber.
[0011] Preferably, a mounting hole is opened in an upper surface of
each of the right anti-collision box and the left anti-collision
box and is used to assemble a front end framework of a head car of
the subway vehicle, and the energy absorbing honeycomb is in front
of the front end framework, and the at least one collapse tube is
behind the front end framework, and the two guide sliding rails are
fixed to an underframe of a vehicle body of the head car of the
subway vehicle.
[0012] Preferably, a part of the movable anti-climber is inserted
into the storage chamber and the front end of the movable
anti-climber extends out from the storage chamber, so that the
energy absorbing honeycomb is completely closed in the storage
chamber of the fixed anti-climber by the rear end of the movable
anti-climber.
[0013] Preferably, anti-collision strengths of the movable
anti-climber, the energy absorbing honeycomb, the fixed
anti-climber and the at least one collapse tube decrease in a
following sequence: the fixed anti-climber, the movable
anti-climber, the at least one collapse tube, the energy absorbing
honeycomb.
[0014] Preferably, each of the two sliding-groove assemblies
includes: an upper module, a lower module, and a plurality of
connecting bolts of the sliding-groove. The upper module includes a
sliding-groove portion of the upper module and a butting portion of
the upper module, and a plurality of threaded blind holes are
provided in the butting portion of the upper module, the
sliding-groove portion of the upper module has a structure of
inverted right-angle step, and the upper module is connected to a
transverse outer side wall of the left anti-collision box or the
right anti-collision box. An upper surface of the upper module is
fixed to the sliding-groove fixing seat on the transverse outer
side wall of the left anti-collision box or the right
anti-collision box. The lower module includes a sliding-groove
portion of the lower module and a butting portion of the lower
module, and a plurality of threaded through holes are provided in
the butting portion of the lower module, and the sliding-groove
portion of the lower module has a structure of right-angle step.
The butting portion of the upper module and the butting portion of
the lower module are tightly fitted to each other, and the
plurality of connecting bolts of the sliding-groove respectively
pass through the plurality of threaded through holes in the butting
portion of the lower module to be fixed to the plurality of
threaded blind holes in the butting portion of the upper module.
The sliding-groove portion of the upper module having the structure
of inverted right-angle step and the sliding-groove portion of the
lower module having the structure of right-angle step are combined
together to form an integrated sliding-groove. Rail surfaces of
bosses of the two guide sliding rails are respectively inserted
into the two sliding-groove assemblies from a horizontal direction,
so that the fixed anti-climber is slidable along the two guide
sliding rails.
[0015] Preferably, thicknesses of the bosses of the two guide
sliding rails decrease from front to back, forming a wedge-shaped
rail, and when the sliding-groove assembly slides into the guide
sliding rail from front to back, a gap between the sliding-groove
assembly and the guide sliding rail increases gradually.
[0016] Preferably, a trigger force of the at least one collapse
tube is at least 1.3 times of a trigger force of the energy
absorbing honeycomb, and a maximum energy absorption of the at
least one collapse tube is at least 5 times of a maximum energy
absorption of the energy absorbing honeycomb.
[0017] A method for installing the energy absorbing device for
subway vehicle is also provided according to the present
application, which includes:
[0018] Step 1, respectively fixing rear ends of the two guide
sliding rails and a rear end of the at least one collapse tube to
the underframe of the vehicle body;
[0019] Step 2, inserting the energy absorbing honeycomb and a
honeycomb-shaped internal chamber therein into the storage chamber
of the fixed anti-climber in a longitudinal direction of the
vehicle body;
[0020] Step 3, inserting the rear end of the movable anti-climber
into the storage chamber of the fixed anti-climber, such that the
front end of the movable anti-creep chamber extends out from the
storage chamber; and
[0021] Step 4, movably connecting the movable anti-climber with the
fixed anti-climber respectively by two long bolts of the movable
anti-climber.
[0022] The benefit effects of the present applications will be
illustrated herein. When the energy absorbing device for subway
vehicle suffers a relatively slight impact of an object, the
impacting object contacts with the movable anti-climber first.
Because the structural strength of the movable anti-climber itself
is relatively high, deformation may not occur as a consequence of
impact. Thus, the impact energy is not absorbed in a large amount,
and is merely transferred to the energy absorbing honeycomb behind
the movable anti-climber. In other words, as the first stage energy
absorbing buffering unit of the total structure in the present
application, the energy absorbing honeycomb directly bears the
collision impact transferred from the movable anti-climber. Through
the deformation of the energy absorbing honeycomb under pressure,
the collision kinetic energy transfers into the internal energy of
deformation and heat, thus realizing the energy absorbing
buffering. The fixed anti-climber is the main bear structure of the
total energy absorbing device, and accommodates the energy
absorbing honeycomb and provides a directional support to it. The
storage chamber of the fixed anti-climber does not have a cover
plate, which is convenient for replacement and maintenance of the
energy absorbing honeycomb. The movable anti-climber is
longitudinally arranged on the fixed anti-climber by two long bolts
of the movable anti-climber, to ensure that the movable
anti-climber moves backward only, but cannot move forward. The two
long bolts of the movable anti-climber should be disassembled
before disassembling the movable anti-climber forward. The fixed
anti-climber also transfers a part of the collision kinetic energy
backward to the at least one collapse tube disposed at the rear end
of the fixed anti-climber. When the collision impact is very strong
and is larger than the operation threshold of the collapse tube,
the collapse tube will be the second stage energy absorbing unit,
which begins synchronous collapse and damping operations to further
absorb the collision energy, thus realizing a further buffering and
protection of the underframe of the vehicle body, as well as
ensuring the impact energy performs a multistage and serial
operation according to a predetermined direction and sequence, and
ensuring the reliability of operation of the energy absorbing
device. Two guide sliding rails ensure the synchronization of the
fixed anti-climber to the two collapse tubes, and ensure the two
collapse tubes move backward in the longitudinal direction of
vehicle body, so as to avoid buckling and failure of one of the
collapse tubes due to unsynchronized force.
[0023] The device also greatly improves the accuracy of energy
absorption of vehicle by adopting the split design of the energy
absorbing device and the structure of the vehicle body, and greatly
reduces the maintenance cost of the energy absorbing device for the
vehicle user.
[0024] In addition, the energy absorbing device for subway vehicle
in the present application also has advantages such as a simple and
useful structure, an easy operation, a low cost, and being
convenient for popularization.
BRIEF DESCRIPTION OF DRAWINGS
[0025] FIG. 1 is an exploded view of the structure of the energy
absorbing device for subway vehicle in the present application.
[0026] FIG. 2 is a three-dimensional structure diagram of the
energy absorbing device for subway vehicle in the present
application.
[0027] FIG. 3 is an exploded view of the energy absorbing device in
FIG. 2.
[0028] FIG. 4 is an exploded view of the energy absorbing device
for subway vehicle from another perspective angle of view.
[0029] FIG. 5 is a three-dimensional structure diagram of the
movable anti-climber in the present application.
[0030] FIG. 6 is a schematic diagram of the honeycomb used in the
present application.
[0031] FIG. 7 is an exploded view of the fixed anti-climber in the
present application.
[0032] FIG. 8 is an exploded view of the three-dimensional
structure of a sliding-groove assembly in the present
application.
[0033] FIG. 9 is a schematic diagram of the operations of an energy
absorbing device in the present application after collision.
DETAILED DESCRIPTION
[0034] In order to help one of ordinary skill in the art understand
the present application better, the embodiments of the present
application will be described clearly and completely in the light
of the accompanying drawings. It is understood that the described
embodiments are only a part of the embodiments of the disclosure,
rather than all of the embodiments. All other embodiments obtained
by those skilled in the art based on the described embodiments,
without departing from the scope of the disclosure, should fall
within the scope of the present application.
[0035] The directional terms of up, down, left, right, front, and
back are all based on the direction in which the vehicle travels
and are based on the positional relationship shown in the drawings.
Depending on the drawing, the corresponding positional relationship
may also change accordingly. Therefore, the directional terms
cannot be understood as an absolute limitation to the scope of
protection.
[0036] Reference is made to FIGS. 1-2. In the present application,
an energy absorbing device for subway vehicle is provided. An
example that the energy absorbing device is assembled at the front
end of head car will be illustrated hereinafter. The energy
absorbing device includes a movable anti-climber 1, a fixed
anti-climber 2, an energy absorbing honeycomb 3, at least one
collapse tube 4, two sliding-groove assemblies 5 and two guide
sliding rails 6. A storage chamber having an opening at the front
end is arranged in a middle section of the fixed anti-climber 2,
and the energy absorbing honeycomb 3 is inserted into the storage
chamber of the fixed anti-climber 2. A rear end of the movable
anti-climber 1 and a front end of the fixed anti-climber 2 are
connected through two long bolts 7 of the movable anti-climber. The
rear end of the movable anti-climber 1 makes the energy absorbing
honeycomb 3 to be retained in the storage chamber. The at least one
collapse tube 4 is perpendicularly fixed to the rear end of the
fixed anti-climber 2. The two sliding-groove assemblies 5 are
symmetrically fixed to outer side walls at the left and right ends
of the fixed anti-climber 2. The two guide sliding rails 6 are
parallelly disposed at the left and right ends of the fixed
anti-climber 2, and each of the guide sliding rails 6 is sliding
joint with one corresponding sliding-groove assembly 5.
[0037] Preferably, a part of the movable anti-climber 1 can be
inserted into the storage chamber and the front end of the movable
anti-climber 1 extends out from the storage chamber, so that the
energy absorbing honeycomb 3 is completely closed in the storage
chamber of the fixed anti-climber 2 by the rear end of the movable
anti-climber 1.
[0038] Preferably, the position of the energy absorbing device
relative to other components of the vehicle body may be that: the
two guide sliding rails 6 are parallel to the underframe 8 of the
vehicle body, and are welded to the underframe; a front end
framework 9 and an upper surface of the fixed anti-climber 2 are
perpendicular to each other and welded together; the energy
absorbing honeycomb 3 is in front of the front end framework 9; and
the at least one collapse tube 4 is behind the front end framework
9.
[0039] FIG. 2 shows the structure of the energy absorbing device
for subway vehicle in the present application after being
assembled, and shows relative positions of all components. FIG. 3
is another exploded view of the energy absorbing device in the
present application. FIG. 4 is an exploded view of the energy
absorbing device for subway vehicle from another perspective view
angle. All components of the energy absorbing device for subway
vehicle in the present application are shown.
[0040] FIG. 5 is a three-dimensional structure diagram of the
movable anti-climber in the present application. The movable
anti-climber 1 includes three flat plates 1-1, two side upright
plates 1-2 and a middle upright plate 1-3. Therein, the three flat
plates 1-1 are parallel to each other. Both the left and right ends
of each flat plate 1-1 are fixed to one corresponding side upright
plate 1-2, and these five plates form a first energy absorbing box
together. A rectangle through groove 1-1-1 is opened in the middle
section of each of the three flat plates 1-1, and the middle
upright plate 1-3 is respectively fixed to the three flat plates
1-1 through respective rectangle through groove 1-1-1 of the three
flat plates 1-1.
[0041] Preferably, at least one row of through holes 1-4 is
disposed at the front ends of the three flat plates 1-1 of the
movable anti-climber 1. When the head car of the subway vehicle
comes across a collision, the movable anti-climber 1 can be
disassembled by pulling ropes that penetrate the through holes 1-4
if only the movable anti-climber 1 is damaged while the fixed
anti-climber 2 is not damaged, so as to replace the movable
anti-climber.
[0042] FIG. 6 is a schematic view of the honeycomb used in the
present application. The material of the honeycomb is preferably
aluminum. The energy absorbing honeycomb 3 is completely closed in
the storage chamber of the fixed anti-climber 2 by the rear end of
the movable anti-climber 2, and the front end of the fixed
anti-climber extends out from the storage chamber.
[0043] FIG. 7 is a three-dimensional structure diagram of the fixed
anti-climber in the present application. Preferably, the fixed
anti-climber 2 includes a left anti-collision box 2-1, a right
anti-collision box 2-2, a rear end beam 2-3 of the storage chamber,
an upper cover plate 2-4 of the storage chamber, a lower cover
plate of the storage chamber 2-5, and two sliding-groove fixing
seats 2-6. Multiple reinforcing rib plates are arranged on the rear
end beam 2-3 of the storage chamber and in the left anti-collision
box 2-1 and the right anti-collision box 2-2 in a longitudinal
direction of the vehicle body. Rear portions of a side wall of the
left anti-collision box 2-1 and a side wall of the right
anti-collision box 2-2 which are opposite to each other are fixed
through the rear end beam 2-3 of the storage chamber, and the left
anti-collision box 2-1 and the right anti-collision box 2-2 are
symmetrical on the left and right. The left and right ends of the
lower cover plate 2-5 of the storage chamber are respectively fixed
to lower edges of the opposite side walls of the left
anti-collision box 2-1 and the right anti-collision box 2-2. A rear
end of the lower cover plate 2-5 of the storage chamber supports a
lower end of the rear end beam 2-3 of the storage chamber and is
fixedly connected to the lower end of the rear end beam of the
storage chamber. The left and right ends of the upper cover plate
2-4 of the storage chamber are respectively welded to upper edges
of the opposite side walls of the left anti-collision box 2-1 and
the right anti-collision box 2-2. A rear end of the upper cover
plate 2-4 of the storage chamber covers an upper end of the rear
end beam 2-3 of the storage chamber and is fixedly connected to the
upper end of the rear end beam of the storage chamber. The two
sliding-groove fixing seats 2-6 are respectively arranged on
transverse outer side walls of the left anti-collision box 2-1 and
the right anti-collision box 2-2. A front end of the at least one
collapse tube 4 is perpendicularly fixed to the rear end of the
fixed anti-climber 2. For example, when one collapse tube 4 is
provided, the collapse tube 4 can be perpendicularly fixed to the
rear end of the rear end beam 2-3 of the storage chamber. When two
collapse tubes 4 are provided, the collapse tubes 4 can be
respectively perpendicularly fixed to the rear ends of the left
anti-collision box 2-1 and the right anti-collision box 2-2.
[0044] A mounting hole 2-7 may be respectively opened in upper
surfaces of the right anti-collision box 2-1 and the left
anti-collision box 2-2, so as to assemble the front end framework
9. According to the above description, the energy absorbing
honeycomb 3 is located in front of the front end framework 9, and
the at least one collapse tube 4 is located behind the front end
framework 9.
[0045] FIG. 8 shows an example of the sliding-groove assembly 5 of
the present application. The sliding-groove assembly 5 is fixed to
the transverse outer side wall of the left anti-collision box 2-1
or the right anti-collision box 2-2 through the sliding groove
fixing seat 2-6. The sliding-groove assembly 5 may include: an
upper module 5-1, a lower module 5-2 and multiple sliding-groove
connecting bolts 5-3. The upper module 5-1 may include a
sliding-groove portion 5-1-1 of the upper module and a butting
portion 5-1-2 of the upper module. Multiple threaded blind holes
are opened in the butting portion 5-1-2 of the upper module. The
sliding-groove portion 5-1-1 of the upper module has a structure of
inverted right-angle step. The upper surface of the butting portion
5-1-2 of the upper module is respectively fixed to the
sliding-groove fixing seat 2-6. The lower module includes a
sliding-groove portion 5-2-1 of the lower module and a butting
portion 5-2-2 of the lower module. Multiple threaded through holes
are opened in the butting portion 5-2-2 of the lower module. The
sliding-groove portion 5-2-1 of the lower module has a structure of
right-angle step. The butting portion 5-2-2 of the lower module and
the butting portion 5-1-2 of the upper module are tightly fitted to
each other. The multiple sliding-groove connecting bolts 5-3
respectively pass through the multiple threaded through holes in
the butting portion 5-2-2 of the lower module and are fixed to the
multiple threaded blind holes in the butting portion 5-1-2 of the
upper module. The sliding-groove portion 5-2-1 of the upper module
having the structure of inverted right-angle step and the
sliding-groove 5-2-2 of the lower module having the structure of
right-angle step are combined together to form an integrated
sliding-groove structure. A boss rail surface of the guide sliding
rail 6 can be inserted into the sliding-groove structure from the
horizontal direction, forming a sliding connection.
[0046] The thicknesses of each boss of the guide sliding rail 6
decreases gradually from front to back, forming a wedge-shaped
rail. When the sliding-groove assembly 5 slides into the guide
sliding rail 6 from front to back, the gap between the
sliding-groove component and the guide sliding rail increases
gradually, thereby reducing the resistance of sliding friction and
thus benefiting the sliding.
[0047] The method of fixing may be welding.
[0048] FIG. 9 is a schematic diagram of the movement of the energy
absorbing device in the present application after collision,
wherein A shows positions of the movable anti-climber 1 and the
fixed anti-climber 2 before collision starts. And B shows positions
of the movable anti-climber 1 and the fixed anti-climber 2 after
the honeycomb 3 as the first-stage energy absorbing unit completes
the energy absorption in the collision process. At this time, the
front end of the movable anti-climber 1 and the front end of the
fixed anti-climber 2 are flush. C shows positions of the movable
anti-climber 1 and the fixed anti-climber 2 after the collapse tube
4 as the second-stage energy absorbing unit completed the energy
absorption. At this time, the fixed anti-climber 2 together with
the movable anti-climber 1 moves backward along the sliding-groove
assembly 5, until the collapse tube 4 is compressed to the maximum
degree. The anti-collision strengths of the movable anti-climber 1,
the fixed anti-climber 2, the energy absorbing honeycomb 3 and the
collapse tube 4 are sequenced in a way that: the fixed anti-climber
2>the movable anti-climber 1>the collapse tube 4>the
energy absorbing honeycomb 3. Thus, when collision occurs, sequence
that a component absorbs energy or is damaged is the energy
absorbing honeycomb 3, the collapse tube 4, the movable
anti-climber 1 and the fixed anti-climber 2. The trigger force of
the collapse tube 4 is at least 1.3 times of the trigger force of
the energy absorbing honeycomb 3, and the maximum energy absorption
of the collapse tube 4 is at least 5 times of the maximum energy
absorption of the energy absorbing honeycomb 6.
[0049] When the energy absorbing device for subway vehicle of the
present application is specifically used, the rear ends of the two
guide sliding rails 6 and the rear ends of the two collapse tubes 4
are respectively fixed to the underframe of the vehicle body, and
the energy absorbing honeycomb 3 and a honeycomb-shaped internal
chamber therein are inserted into the storage chamber of the fixed
anti-climber 2 towards the longitudinal direction of the vehicle
body. Then, the rear end of the movable anti-climber 1 is inserted
into the storage chamber of the fixed anti-climber, thus the energy
absorbing honeycomb is completely closed in the storage chamber of
the fixed anti-climber 2. Finally, the movable anti-climber 1 and
the fixed anti-climber 2 are movably connected respectively by two
long bolts 7 of movable anti-climber, thus the assembly of the
energy absorbing device for subway vehicle of the present
application is completed. In the present application, the movable
anti-climber 1 and the fixed anti-climber 2 preferably adopt the
A588 type high-strength low-alloy carbon steel plate material. The
energy absorbing honeycomb 3 preferably adopts the 5A05 type
rust-proof alloy provided by CRRC Qingdao Sifang Rolling Stock
Research Institute CO., LTD. The collapse tube preferably adopts
the S550MC type structural steel provided by CRRC Qingdao Sifang
Rolling Stock Research Institute CO., LTD.
* * * * *