CN111071281A - Anti-climbing energy absorption device for railway vehicle - Google Patents
Anti-climbing energy absorption device for railway vehicle Download PDFInfo
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- CN111071281A CN111071281A CN202010004973.8A CN202010004973A CN111071281A CN 111071281 A CN111071281 A CN 111071281A CN 202010004973 A CN202010004973 A CN 202010004973A CN 111071281 A CN111071281 A CN 111071281A
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- China
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- cylindrical shell
- air bag
- push rod
- compression spring
- energy absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
- B61F19/04—Bumpers or like collision guards
Abstract
The invention provides a multi-stage energy absorption device for a rail vehicle, and belongs to the technical field of passive safety of rail transit vehicles. Comprises an anti-creeper and a cylindrical shell, wherein the back surface of the anti-creeper is fixedly connected with the front end of a push rod. The rear end of the push rod is provided with a circular push plate, the rear end surface of the circular push plate is contacted with the front end of the air bag, and the front end surface of the circular push plate is contacted with a baffle arranged in the cylindrical shell; a conical blade is arranged on the inner side of the bottom of the cylindrical shell, a compression spring is arranged outside the conical blade, the tail end of the compression spring is fixed with the inner side of the bottom of the cylindrical shell, and the front end of the compression spring is fixed with the tail end of the air bag; the middle part of the push rod is provided with a flange, and a closed space is formed between the flange in the cylindrical shell and the baffle and is provided with aluminum scraps. The flange plate is in clearance fit with the cylindrical shell, and the push plate is in clearance fit with the cylindrical shell. The front end plate of the cylindrical shell and the center of the baffle are both provided with through holes in clearance fit with the push rod. The spring is in interference fit with the tail end of the conical blade. The air bag is positioned at the inner rear part of the cylindrical shell.
Description
Technical Field
The invention belongs to the technical field of passive safety of rail transit vehicles, and relates to a passive safety technology of a train end.
Background
The rapid development of the rail passenger car is the embodiment of the social science and technology progress, but the safety of the rail passenger car is worthy of deep thought of designers and managers. When the active safety of the train is out of control, the passive safety is the last barrier for protecting passengers and the safety of the train. When the trains collide with each other, serious climbing accidents can occur due to the action of vertical loads, and in order to avoid the occurrence of the condition, the energy-absorbing anti-climbing device is installed at the foremost end of the train and can absorb impact kinetic energy, so that the energy-absorbing effect is achieved, the safety of drivers and passengers and equipment on the train is protected to the greatest extent, and the loss caused by the collision accidents is reduced as much as possible.
The conventional anti-climbing energy absorption device for the rail vehicle mainly comprises three types, namely cutting type energy absorption, crushing type energy absorption and expansion type energy absorption.
The working principle of the crushing type energy absorption device is that after the longitudinal impact force acting on a vehicle reaches the crushing trigger force of the crushing element, the crushing device can generate plastic deformation, so that a large amount of energy is absorbed.
The expansion type energy absorption device mainly comprises expansion and gas expansion of a pipe, the energy absorption range of the expansion type energy absorption device is difficult to effectively control when collision occurs, and the defects of low impedance level and small energy absorption capacity cannot be overcome.
The working principle of cutting type energy absorption is to dissipate energy by utilizing friction, plastic deformation and tearing generated by metal in the cutting process.
At present, the energy absorption device is mainly of a crushing type and an expansion type structure, and along with continuous innovation of the energy absorption device, the cutting type energy absorption device utilizing a metal cutting principle is relatively novel research. The rail vehicle anti-climbing energy absorption device comprehensively considers three energy absorption modes of cutting energy absorption, crushing energy absorption and expansion energy absorption, and utilizes the expansion of the air bag when absorbing energy; the flange plate is used for mutually cutting the cylindrical shell wall when absorbing energy; the deformation of the spring during compression is used for absorbing energy, so that the advantages and disadvantages of the three modes are complemented. In addition, the device is also provided with aluminum scraps, and the aluminum scraps are extruded to achieve the effect of energy absorption and buffering when being impacted. The whole device is arranged side by side after being arranged in front and behind to form a three-stage energy absorption structure. Meanwhile, when the air bag is impacted violently, the air bag extrudes the spring to touch the conical blade to burst, a large amount of energy is released to resist the impact, the instantaneous longitudinal impact of drivers and passengers and equipment on the vehicle is greatly reduced, and the air bag is valuable for solving the existing problems.
Disclosure of Invention
The invention aims to provide an anti-climbing energy absorption device for a railway vehicle, which can effectively solve the technical problems of collision energy and gradual absorption.
The purpose of the invention is realized by the following technical scheme: the back of the anti-creep device is fixedly connected with the front end of a push rod, the rear end of the push rod is provided with a circular push plate, the rear end surface of the circular push plate is contacted with the front end of an air bag, and the front end surface is contacted with a baffle arranged in the cylindrical shell; a conical blade is arranged on the inner side of the bottom of the cylindrical shell, a compression spring is arranged outside the conical blade, the tail end of the compression spring is fixed with the inner side of the bottom of the cylindrical shell, and the front end of the compression spring is fixed with the tail end of the air bag; the middle part of the push rod is provided with a flange, and a closed space is formed between the flange in the cylindrical shell and the baffle and is provided with aluminum scraps.
The flange plate is in clearance fit with the cylindrical shell, and the push plate is in clearance fit with the cylindrical shell.
The front end plate of the cylindrical shell and the center of the baffle are both provided with through holes in clearance fit with the push rod.
The tail end of the compression spring is sleeved on the periphery of the conical blade.
The air bag is positioned at the inner rear part of the cylindrical shell.
The flange is fixedly connected with the push plate and the push rod. The outer edge of the flange plate is in transition fit with the cylindrical shell, and the rest parts are in clearance fit with the cylindrical shell. The other end of the push plate is provided with an air bag group formed by four round air bags with the same shape in the front and back. The air bag is supported on four compression springs which are arranged side by side, and conical blades are arranged in the compression springs. The conical blade is fixedly connected on a bottom plate in the cylindrical shell, the compression spring and the conical blade are in interference fit with the wall of the cylindrical shell, and the flange plate and the baffle plate form a closed space which is filled with aluminum scraps. The front end of the cylindrical shell and the partition plate are provided with push rod holes, the push rod holes are in transition fit with the push rods, and the whole energy absorption device forms a three-stage energy absorption structure which is arranged in front and behind and then arranged side by side in front and behind.
Compared with the prior art, the advantages and effects are as follows: the cutting energy absorption mode, the crushing energy absorption mode and the expansion energy absorption mode are comprehensively considered, and the air bag is expanded when absorbing energy; the flange plate is used for mutually cutting the cylindrical shell wall when absorbing energy; the energy is absorbed by the deformation of the compression spring during compression, so that the advantages and disadvantages of the three modes are complemented. In addition, the device is also provided with aluminum scraps, and the aluminum scraps are extruded to achieve the effect of energy absorption and buffering when being impacted. The whole device is arranged side by side after being arranged in front and behind to form a three-stage energy absorption structure. Meanwhile, when the air bag is impacted violently, the air bag extrudes the compression spring to touch the conical blade to burst, a large amount of energy is released to resist the impact, the instantaneous longitudinal impact of drivers and passengers and equipment on the vehicle is greatly reduced, and the air bag is valuable for solving the existing problems.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the bladder and spring of the present invention;
FIG. 3 is a schematic structural diagram of an anti-creeper and aluminum shavings according to the present invention;
FIG. 4 is a schematic view of a cylindrical housing and a conical blade according to the present invention;
Detailed Description
As shown in fig. 1, the rail vehicle anti-climbing energy-absorbing device comprises an anti-climbing device 1 and a cylindrical shell 5, wherein the back surface of the anti-climbing device 1 is fixedly connected with the front end of a push rod 2, the rear end of the push rod 2 is provided with a circular push plate 4, the rear end surface of the circular push plate 4 is contacted with the front end of an air bag 9, and the front end surface is contacted with a baffle 7 arranged inside the cylindrical shell 5; a conical blade 6 is arranged on the inner side of the bottom of the cylindrical shell 5, a compression spring 10 is arranged outside the conical blade 6, the tail end of the compression spring 10 is fixed with the inner side of the bottom of the cylindrical shell 5, and the front end of the compression spring is fixed with the tail end of the air bag 9; the middle part of the push rod 2 is provided with a flange 3, and a closed space is formed between the flange 3 and a baffle 7 in the cylindrical shell 5 and is provided with aluminum scraps 8.
Furthermore, the flange 3 is in clearance fit with the cylindrical shell 5, and the push plate 4 is in clearance fit with the cylindrical shell 5. The front end plate of the cylindrical shell 5 and the center of the baffle 7 are both provided with through holes which are in clearance fit with the push rod 2.
Further, the tail end of the compression spring 10 is sleeved on the periphery of the conical blade 6. The air bag 9 is located at the inner rear part of the cylindrical shell 5.
The rail vehicle anti-climbing energy absorption device comprehensively considers three energy absorption modes of cutting energy absorption, crushing energy absorption and expansion energy absorption, and utilizes the expansion of the air bag when absorbing energy; the flange plate is used for mutually cutting the cylindrical shell wall when absorbing energy; the energy is absorbed by the deformation of the compression spring during compression, so that the advantages and disadvantages of the three modes are complemented. In addition, the device is also provided with aluminum scraps, and the aluminum scraps are extruded to achieve the effect of energy absorption and buffering when being impacted. The whole device is arranged side by side after being arranged in front and behind to form a three-stage energy absorption structure. Meanwhile, when the vehicle is impacted violently, the air bag extrudes the compression spring to touch the conical blade to burst, a large amount of energy is released to resist the impact, and the instantaneous longitudinal impact of drivers and passengers and equipment on the vehicle is greatly reduced. When the locomotive is collided, the anti-creeper with the tooth grooves is firstly impacted, so that the climbing of the locomotive is effectively prevented; the impact force is transmitted to the push rod through the anti-creeper, and the push rod is transmitted to the flange plate and the push plate. The flange plate and the push plate move backwards, the flange plate extrudes the aluminum scraps, and the push plate extrudes the air bag and the compression spring. The aluminum scraps, the air bag and the spring begin to compress and absorb energy. The aluminum scraps, the air bag and the spring form an energy absorption structure which is arranged in front and at the back and then arranged side by side. When the push rod further moves, the air bag is further compressed and touches the conical blade in the compression spring, the conical blade punctures the air bag, the air bag releases a large amount of gas, and the air bag releases a large amount of energy in a moment together with elastic potential energy released by rebounding of the compression spring. When the push rod continues to move, the aluminum scraps continue to be extruded, other air bags of the air bags continue to be repeatedly compressed and absorb energy to puncture and release a large amount of energy, the flange plate and the cylindrical shell wall continuously rub to absorb energy in the process until the aluminum scraps are completely extruded, the air bags are completely punctured, and the energy absorption process is finished.
The invention is not to be considered as limited to the specific embodiments thereof, and all changes, equivalents and improvements that can be made by those skilled in the art are intended to be included within the scope of the invention, all within the spirit and principle of the inventive concept.
Claims (5)
1. The utility model provides a rail vehicle anti-creep energy-absorbing device, includes anticreeper (1) and cylinder formula shell (5), the back of anticreeper (1) concreties with the front end of push rod (2), its characterized in that: the rear end of the push rod (2) is provided with a round push plate (4), the rear end surface of the round push plate (4) is contacted with the front end of the air bag (9), and the front end surface is contacted with a baffle (7) arranged inside the cylindrical shell (5); a conical blade (6) is arranged on the inner side of the bottom of the cylindrical shell (5), a compression spring (10) is arranged outside the conical blade (6), the tail end of the compression spring (10) is fixed with the inner side of the bottom of the cylindrical shell (5), and the front end of the compression spring is fixed with the tail end of the air bag (9); the middle part of the push rod (2) is provided with a flange (3), and a closed space is formed between the flange (3) in the cylindrical shell (5) and the baffle (7) and is provided with aluminum scraps (8).
2. The rail vehicle anti-creep energy-absorbing device according to claim 1, wherein: the flange plate (3) is in clearance fit with the cylindrical shell (5), and the push plate (4) is in clearance fit with the cylindrical shell (5).
3. The railway vehicle multistage energy absorption device according to claim 1, wherein: the front end plate of the cylindrical shell (5) and the center of the baffle (7) are provided with through holes which are in clearance fit with the push rod (2).
4. The rail vehicle anti-creep energy-absorbing device according to claim 1, wherein: the tail end of the compression spring (10) is sleeved on the periphery of the conical blade (6).
5. The rail vehicle anti-creep energy-absorbing device according to claim 1, wherein: the air bag (9) is positioned at the inner rear part of the cylindrical shell (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010004973.8A CN111071281A (en) | 2020-01-03 | 2020-01-03 | Anti-climbing energy absorption device for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010004973.8A CN111071281A (en) | 2020-01-03 | 2020-01-03 | Anti-climbing energy absorption device for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111071281A true CN111071281A (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010004973.8A Pending CN111071281A (en) | 2020-01-03 | 2020-01-03 | Anti-climbing energy absorption device for railway vehicle |
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| Country | Link |
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| CN (1) | CN111071281A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958653A (en) * | 2021-10-22 | 2022-01-21 | 西北工业大学 | Composite material plate and metal plate lap joint energy absorption device |
| CN114084191A (en) * | 2021-10-22 | 2022-02-25 | 西南交通大学 | Rail transit vehicle contact integral type buffering energy-absorbing device |
-
2020
- 2020-01-03 CN CN202010004973.8A patent/CN111071281A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958653A (en) * | 2021-10-22 | 2022-01-21 | 西北工业大学 | Composite material plate and metal plate lap joint energy absorption device |
| CN114084191A (en) * | 2021-10-22 | 2022-02-25 | 西南交通大学 | Rail transit vehicle contact integral type buffering energy-absorbing device |
| CN114084191B (en) * | 2021-10-22 | 2022-10-18 | 西南交通大学 | Rail transit vehicle contact integral type buffering energy-absorbing device |
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