CN109367561B - Cutting type energy-absorbing anti-creeper for railway vehicle - Google Patents
Cutting type energy-absorbing anti-creeper for railway vehicle Download PDFInfo
- Publication number
- CN109367561B CN109367561B CN201811445212.5A CN201811445212A CN109367561B CN 109367561 B CN109367561 B CN 109367561B CN 201811445212 A CN201811445212 A CN 201811445212A CN 109367561 B CN109367561 B CN 109367561B
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- Prior art keywords
- cutting
- cylinder body
- piston rod
- flange
- cutting tool
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- 238000005520 cutting process Methods 0.000 title claims abstract description 95
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000000110 cooling liquid Substances 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims description 2
- 241000219098 Parthenocissus Species 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 230000003139 buffering effect Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000004210 tooth component Anatomy 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The application discloses a cutting type energy-absorbing anti-climbing device for a railway vehicle, which comprises a piston rod, a cylinder body, an inner sleeve, a flange and a cooling pipe, wherein the inner sleeve is arranged in the cylinder body, cooling liquid is arranged in the inner sleeve and the cylinder body, one ends of the inner sleeve and the cylinder body are connected with one side of the flange, a guide hole which is in sliding connection with the piston rod and is aligned with the inner sleeve is arranged on the flange, a cutting tool is arranged on the other side of the flange, the cutting tool extends into a guide groove on the piston rod, the cooling pipe is unidirectionally communicated to the installation position of the cutting tool from the cylinder body, and a damping hole communicated with the cylinder body is arranged at the end part of the inner sleeve, which is far away from the flange. According to the application, the cutter is cooled by the cooling liquid, so that the probability of melting the cutter in the cutting process is reduced, the reliability of the cutter is improved, and meanwhile, the cut cutting part pushes the piston to squeeze the cooling liquid in the cylinder body, so that part of kinetic energy generated when the train collides is converted into kinetic energy and pressure energy of the cooling liquid, and the breakage probability of the cutter is reduced.
Description
Technical Field
The application relates to the field of track traffic buffering and energy absorption, in particular to a cutting type energy absorption anti-climbing device for a railway vehicle.
Background
With the rapid development of the rail transit industry, passive safety performance of rail vehicles is also being more and more emphasized while active safety of trains is improved. When the collision speed of the train is high, the train can generate great acceleration pulse, so that the train is severely damaged such as arching, climbing, overturning and the like, the collided vehicles are greatly deformed, and the survival space of passengers is greatly reduced. In order to reduce the damage of train collision accidents to the train body and the injury of passengers, a high-energy-absorption and high-efficiency anti-climbing device is usually arranged in a limited space at two ends of the train.
The cutting, planing and broaching type energy-absorbing anti-creeper commonly used at present has the following defects: (1) The requirements on the machining process are strict, and the requirements on the cutter by the cut piece are high; (2) The temperature of the cutter is higher when the cutter cuts the cut piece, so that the cutter is seriously melted, and the reliability of the cutter is poor; (3) The impact force in the initial cutting process is large, and the cutter is easy to break; (4) The steady cutting process has a certain fluctuation phenomenon, and the anti-creep device has poor anti-unbalanced load performance.
Disclosure of Invention
The application aims to provide a cutting type energy-absorbing anti-climbing device for a railway vehicle, so as to solve the problems.
In order to achieve the above purpose, the application discloses a cutting type railway vehicle energy-absorbing anti-climbing device which comprises a piston rod, a cylinder body, an inner sleeve, a flange and a cooling pipe, wherein the inner sleeve is arranged in the cylinder body, cooling liquid is arranged in the inner sleeve and the cylinder body, one ends of the inner sleeve and the cylinder body are connected with one side of the flange, a guide hole which is in sliding connection with the piston rod and is aligned with the inner sleeve is arranged on the flange, a cutting tool for cutting the piston rod is arranged on the other side of the flange, the cooling pipe is in one-way conduction with the mounting position of the cutting tool from the cylinder body, and a damping hole communicated with the cylinder body is arranged at the end part of the inner sleeve far away from the flange.
Further, a one-way valve is arranged on the wall surface of the cylinder body, one end of the cooling pipe is connected with the one-way valve, and the other end of the cooling pipe faces the cutter point of the cutting tool.
Further, one end of the piston rod is provided with a piston which is in sealing sliding connection with the cylinder body, and the connection position of the cooling pipe and the cylinder body is at the other end of the cylinder body.
Further, the connection position of the cooling pipe and the cylinder body is close to the flange.
Further, a guide groove is formed in the piston rod, the cutting tool extends into the guide groove, and a distance is formed between the tip of the cutting tool and the position to be cut of the piston rod along the cutting direction of the cutting tool, so that the cutting tool starts cutting after the cooling liquid is sprayed out.
Further, the other end of the piston rod, which is far away from the piston, is provided with anti-creeping teeth.
Further, the piston rod is of a hollow rod member structure with a hollow inside.
Further, the inner sleeve and the cylinder body are coaxially and fixedly connected to a mounting base, and a mounting hole is formed in the mounting base.
Compared with the prior art, the application has the advantages that:
according to the application, the cutter is cooled by the cooling liquid, so that the probability of melting the cutter in the cutting process is reduced, the reliability of the cutting cutter is improved, and meanwhile, the cutting part after cutting pushes the piston to squeeze the cooling liquid in the cylinder body, so that part of kinetic energy generated when a train collides is converted into kinetic energy and pressure energy of the cooling liquid, the impact load in the initial cutting process is reduced, the stable running of the cutting process is ensured, and the breaking probability of the cutter is reduced. Meanwhile, the cut metal part is changed into a piston rod which enters the cylinder body, so that the unbalanced load resistance of the cutting type energy absorbing device is improved, and the crashworthiness of the railway vehicle is ensured.
The application will be described in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of a cutting type energy-absorbing anti-creeper for a railway vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an exploded construction of a cutting type energy absorbing anti-creep device for a railway vehicle in accordance with an embodiment of the present application;
FIG. 3 is a schematic view of a structure of a tooth-climbing prevention member according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of an anti-creep tooth member disclosed in an embodiment of the application;
FIG. 5 is a first structural schematic illustration of a flange assembly according to an embodiment of the present application;
FIG. 6 is a second schematic view of a flange assembly according to an embodiment of the present application;
fig. 7 is a schematic structural view of a cylinder part disclosed in an embodiment of the present application.
Legend description:
1. an anti-creeping tooth part; 11. anti-creeping teeth; 12. a piston rod; 13. a guide groove; 14. a piston; 15. a concave slot;
2. a flange assembly; 21. a flange; 22. a cutting tool; 23. a neck part is contracted; 24. a cutter mounting groove; 25. a guide hole;
3. a cooling tube;
4. a cylinder part; 41. a cylinder; 42. an inner sleeve; 43. a damping hole; 44. a one-way valve;
5. a mounting base; 51. a mounting base plate; 52. and (5) mounting holes.
Detailed Description
Embodiments of the application are described in detail below with reference to the attached drawings, but the application can be implemented in a number of different ways, which are defined and covered by the claims.
As shown in fig. 1-7, the application discloses a cutting type energy-absorbing anti-climbing device for a railway vehicle, which mainly comprises an anti-climbing tooth component 1, a flange component 2, a cooling pipe 3, a cylinder body component 4 and a mounting base 5, wherein the anti-climbing tooth component 1 comprises an anti-climbing tooth 11, a piston rod 12 and a piston 14, four mounting holes 52 for mounting bolts are uniformly distributed on the circumference of a mounting bottom plate 51 of the mounting base 5, and the whole anti-climbing device is connected with a vehicle underframe through the mounting holes 52. The anti-creeping teeth 11 and the piston 14 are disposed at two ends of the piston rod 12, the anti-creeping teeth 11 are disposed on the metal plate, the anti-creeping teeth 11 are 4 parallel, and in this embodiment, in order to reduce the weight of the whole anti-creeping device, the piston rod 12 is designed into a hollow rod member structure with a hollow interior. The piston rod 12 is also the part to be cut, and the wall surface of the piston rod 12 is provided with a guide groove 13. The mounting base 5 and the flange assembly 2 are mounted at two ends of the cylinder part 4 in a sealing manner, wherein the cylinder part 4 comprises a cylinder 41 and an inner sleeve 42 which are coaxially and fixedly connected to the mounting base 5, cooling liquid is continuously filled between the cylinder 41 and the inner sleeve 42 and inside the inner sleeve 42, the inner sleeve 42 is arranged inside the cylinder 41, one ends of the cylinder 41 and the inner sleeve 42 are sealed through the mounting base 5, the other ends of the cylinder 41 and the inner sleeve 42 are sealed through the flange assembly 2, the cylinder 41 and the inner sleeve 42 are communicated only through a damping hole 43 on the inner sleeve 42, in the embodiment, the damping hole 43 is arranged at one end close to the mounting base 5, namely the bottom of the inner sleeve 42, the flange assembly 2 comprises a flange 21 and a cutting tool 22, a guide hole 25 is arranged in the center of the flange 21, the flange 21 is in interference fit with the cylinder 41 through a necking part 23 at the edge (and the inner sleeve 42 is aligned and connected with the inner wall of the guide hole 25), and therefore the radial dimension of the cylinder part 4 and the flange 21 is the same as the radial dimension of the cylinder 41. Wherein, the flange 21, the mounting base 5 and the outer wall of the cylinder 41 can be provided with reinforcing ribs in the circumferential direction, so as to increase the anti-unbalanced load performance, and the guide holes 25 and the pistons 14 have the same size. When a train collides, the guide holes 25 can ensure that the piston 14 moves towards the direction of the mounting base 5 stably, so that the cutting and energy absorbing process is more stable, and the stability and the unbalanced load resistance of the anti-creeper device are improved.
In this embodiment, the flange 21 is provided with four cutter mounting grooves 24 along the circumferential edge of the guide hole 25, the cutter mounting grooves 24 are internally provided with cutting tools 22 by screw fastening, the tips of the cutting tools 22 extend toward the center of the guide hole 25, the piston rod 12 is in sealing sliding contact with the guide hole 25 in specific engagement, the tips of the cutting tools 22 are inserted into the guide groove 13, the piston 14 is in sliding contact with the inner sleeve 42, the guide groove 13 is positioned above the piston 14, meanwhile, the end of the cylinder 41 close to the flange 21 is provided with one-way valves 44, the one-way valves 44 are uniformly distributed along the circumferential direction of the cylinder 41 and are in one-to-one correspondence with the cutting tools 22, one end of the cooling tube 3 is connected with the one-way valves 44 on the wall surface of the cylinder 41, and the other end extends to the tip position of the cutting tools 22, wherein the one-way valves 44 only allow communication from the inside of the cylinder 41 to the outside. When the train collides, the anti-creeping teeth 11 between two vehicles are meshed and contacted with each other, the piston 14 at the tail end of the piston rod 12 starts to squeeze the cooling liquid in the inner sleeve 42, the cooling liquid in the inner sleeve 42 is squeezed to flow from the damping hole 43 on the cylinder wall to the outer cylinder 41, the cooling liquid is filled between the cylinder 41 and the inner sleeve 42, the one-way valve 44 on the side wall of the cylinder 41 is opened under the action of pressure, so that the cooling liquid is sprayed to the cutting tool 22 from the cooling pipe 3 rapidly, then the cutting tool 22 can cut metal on the piston rod 12 stably, the piston rod 12 continues to move towards the bottom of the inner sleeve 42 after cutting, and therefore the temperature of the cutting tool 22 in the cutting buffering energy absorption process is reduced, and the probability of melting the cutting tool 22 (almost melting tool) is reduced. When the size of the end part of the guide groove 13 is matched with that of the cutting tool 22, and the length of the protruding guide hole 25 of the cutting tool 22 on the tool mounting groove 24 is equal to the depth of the guide groove 13, the width of the cutting tool 22 is equal to or slightly smaller than the width of the guide groove 13, namely, the cutting tool 22 and the guide groove 13 are in transitional or smaller interference fit, so that the cutting tool 22 can cut the piston rod 12 stably along the longitudinal direction, and the stability of the device is improved. The arrangement of the guide groove 13 can prevent the cutting tool 22 from being broken due to suddenly overlarge stress, ensure the stress balance of the cutting direction and four cutting tools 22 in the cutting process, reduce the vibration of the anti-creeper in the cutting process and improve the stability of the device.
Meanwhile, when the train collides, due to the extrusion action of the piston 14, the cooling liquid in the inner sleeve 42 is extruded to flow from the damping hole 43 on the cylinder wall to the external cylinder 41, and then in the process of being sprayed to the cutting tool 22 through the cooling pipe 3, one part of the collision mechanical energy is converted into cutting energy and heat energy generated by the cutting tool 22 cutting the piston rod 12, and the other part is converted into the kinetic energy and pressure energy of the cooling liquid to act together, so that the cutting tool 22 is protected when the effect of buffering and absorbing energy is improved, the cylinder part 4 not only plays the role of hydraulic buffering and absorbing energy, but also can finish the effective cooling of the cutting tool 22, and can cool the cutting energy absorbing position in time while combining the hydraulic buffering and absorbing energy and cutting energy absorbing into a whole, thereby realizing the remarkable effect of '1+1 > 2'.
In this embodiment, since there is a certain vibration during normal operation of the train, the check valve 44 can ensure that the coolant does not overflow from the cylinder 41 to the cooling pipe 3 during normal operation of the train. The check valve 44 is opened only when the pressure threshold is reached under the action of hydraulic pressure in the event of a train collision accident, so that the cooling liquid is sprayed from the cooling pipe 3 to the cutting tool 22, and the pressure threshold and the cooling pipe 3 simultaneously play a role in buffering and absorbing energy through the damping hole.
Meanwhile, in order to reduce the impact load of the initial cutting process, the stable cutting process is ensured, and the cutter point of the cutting tool 22 is spaced from the position to be cut of the piston rod 12 by a certain distance along the cutting direction of the cutting tool 22, namely, after the piston rod 12 is required to move towards the mounting base 5 by a certain distance, the cutter point of the cutting tool 22 can touch the metal with cutting on the piston rod 12, so that the cutting tool 22 starts to cut after the cooling liquid is sprayed, the impact load of the initial cutting process is reduced, and meanwhile, the cutting tool 22 is better protected.
In the present embodiment, the concave slots 15 are provided on both sides of the guide groove 13, and the concave slots 15 extend along the cutting direction of the cutting tool 22, that is, the concave slots 15 extend along both sides of the guide groove 13 toward the circumferential direction of the piston rod 12, so that it is ensured that when the tool cuts, a specified metal is cut along a specified path, that is, only the metal between two opposite concave slots 15 is cut, thereby making the cutting process more controllable.
And because the connection position of the cooling pipe 3 and the cylinder 41 is close to the flange 21, the flow path of the cooling liquid in the extruded process is more tortuous and longer, the absorbed energy is more, the buffering effect is better, meanwhile, a plurality of middle sleeves which are sleeved with each other can be arranged between the cylinder 41 and the inner sleeve 42, and a plurality of damping holes 43 are uniformly distributed on the middle sleeve, so that the damping and energy absorbing effects can be further improved.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. The utility model provides a cutting formula railway vehicle energy-absorbing anticreeper, its characterized in that, includes piston rod (12), cylinder body (41), inner skleeve (42), flange (21) and cooling tube (3), inner skleeve (42) set up in cylinder body (41), be equipped with the coolant liquid in inner skleeve (42) and cylinder body (41), the one end of this inner skleeve (42) and cylinder body (41) all with one side of flange (21) is connected, be provided with on this flange (21) with piston rod (12) sliding connection and with guiding hole (25) of inner skleeve (42) alignment, cutting tool (22) of cutting piston rod (12) are installed to the opposite side of flange (21), cooling tube (3) follow one-way conduction in cylinder body (41) extremely cutting tool (22) mounted position, inner skleeve (42) are provided with the tip of flange (21) with damping hole (43) of cylinder body (41) intercommunication.
2. The energy-absorbing anti-climbing device for the cutting railway vehicle according to claim 1, wherein a one-way valve (44) is arranged on the wall surface of the cylinder body (41), one end of the cooling pipe (3) is connected with the one-way valve (44), and the other end of the cooling pipe is arranged towards the tool tip of the cutting tool (22).
3. The energy-absorbing anti-climbing device of a cutting railway vehicle according to claim 1, characterized in that one end of the piston rod (12) is provided with a piston (14) in sealing sliding contact with the cylinder (41), and the connection position of the cooling pipe (3) and the cylinder (41) is at the other end of the cylinder (41).
4. The skiving railway vehicle energy absorbing anticreeper of claim 1, characterized in that the connection location of the cooling pipe (3) with the cylinder (41) is arranged close to the flange (21).
5. The energy absorbing anti-creep device for a cutting rail vehicle according to any one of claims 1-4, characterized in that the piston rod (12) is provided with a guiding groove (13), the cutting tool (22) extends into the guiding groove (13) and in the cutting direction of the cutting tool (22), the tip of the cutting tool (22) is spaced from the position to be cut of the piston rod (12) by a distance such that the cutting tool (22) starts cutting after the cooling liquid is sprayed out.
6. The energy-absorbing creeper for railway vehicles as claimed in claim 5, characterized in that the other end of the piston rod (12) remote from the piston (14) is provided with creeper teeth (11).
7. The skiving railway vehicle energy absorbing anticreeper of claim 6, characterized in that said piston rod (12) is of hollow rod construction with hollow interior.
8. The energy-absorbing anti-climbing device for the cutting railway vehicle according to claim 7, wherein the inner sleeve (42) and the cylinder body (41) are coaxially and fixedly connected to a mounting base (5), and a mounting hole (52) is formed in the mounting base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811445212.5A CN109367561B (en) | 2018-11-29 | 2018-11-29 | Cutting type energy-absorbing anti-creeper for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811445212.5A CN109367561B (en) | 2018-11-29 | 2018-11-29 | Cutting type energy-absorbing anti-creeper for railway vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109367561A CN109367561A (en) | 2019-02-22 |
| CN109367561B true CN109367561B (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811445212.5A Active CN109367561B (en) | 2018-11-29 | 2018-11-29 | Cutting type energy-absorbing anti-creeper for railway vehicle |
Country Status (1)
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| CN (1) | CN109367561B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845829B (en) * | 2020-07-30 | 2021-09-14 | 中车唐山机车车辆有限公司 | Anticreeper for rail vehicle collision |
| CN113619633B (en) * | 2021-09-07 | 2023-01-20 | 中车株洲电力机车有限公司 | Metal energy absorption device |
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|---|---|
| CN109367561A (en) | 2019-02-22 |
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