Energy-absorbing anti-climber for a rail vehicle and a rail vehicle nose

Abstract

The present disclosure provides an energy-absorbing anti-climbing device for a rail vehicle and a nose of the rail vehicle, and relates to the technical field of the energy-absorbing anti-climbing device for the rail vehicle, and the energy-absorbing anti-climbing device for the rail vehicle comprises: a mounting seat arranged at the front end of the rail vehicle; an energy-absorbing outer pipe connected to one side of the mounting seat, wherein one end of the energy-absorbing outer pipe away from the mounting seat is provided with anti-climbing teeth, and the energy-absorbing outer pipe is configured to collapse in the axial direction thereof towards the mounting seat in the case that the anti-climbing teeth are subjected to an external impact; and a buffer assembly arranged on the mounting seat, wherein the buffer assembly is configured to provide a damping force opposite to the impact direction in response to the collapse state of the energy-absorbing outer pipe, so as to absorb at least part of the energy of the rail vehicle when subjected to the external impact.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of energy-absorbing anti-climbers of rail vehicles, and more particularly to an energy-absorbing anti-climber for a rail vehicle and a head of a rail vehicle. BACKGROUND

[0002] Rail vehicles have a large inertia and high speed, and although emergency braking is performed before encountering obstacles, collision accidents still occur. When two rail vehicles collide, the anti-climbers provided at the front ends of the rail vehicles come into collision contact, and the anti-climb teeth at the front ends of the anti-climbers engage each other to prevent the two rail vehicles from riding and stacking, so the anti-climber of the rail vehicle is an important component of passive safety of the rail vehicle, which can maximize the safety of the driver and passengers.

[0003] At present, the anti-climber absorbs the energy generated during the collision by crushing deformation, and the energy-absorbing structure of the anti-climber absorbs and releases energy in a telescopic manner, which occupies a lot of external space and cannot meet the demand for lightweight of the rail vehicle, and cannot adapt to the development of high-speed rail vehicles. SUMMARY

[0004] Therefore, in order to solve at least one of the technical problems in the prior art, the present disclosure provides an energy-absorbing anti-climber for a rail vehicle and a head of a rail vehicle, which can stably absorb the energy when the rail vehicle is subjected to external force collision.

[0005] One aspect of the present disclosure provides an energy-absorbing anti-climber for a rail vehicle, comprising: a mounting seat provided at a front end of the rail vehicle; an energy-absorbing outer pipe connected to one side of the mounting seat, an end of the energy-absorbing outer pipe away from the mounting seat being provided with anti-climb teeth, the energy-absorbing outer pipe being configured to collapse in the axial direction thereof toward the mounting seat in the event that the anti-climb teeth are subjected to external force collision; and a buffer assembly provided on the mounting seat, the buffer assembly being configured to provide a damping force opposite to the direction of collision in response to the collapse state of the energy-absorbing outer pipe, so as to absorb at least part of the energy when the rail vehicle is subjected to external force collision.

[0006] According to some embodiments of the present disclosure, the anti-climb teeth have protrusions arranged at intervals thereon, and grooves are arranged between adjacent protrusions, so as to engage with the anti-climb teeth connected to another rail vehicle in the event that the rail vehicle collides with the another rail vehicle.

[0007] According to some embodiments of this disclosure, the buffer assembly includes: a reservoir tube, the open end of which is connected to the other side of the mounting base, and the inner cavity of the reservoir tube is filled with hydraulic oil; a guide tube, disposed inside the energy-absorbing outer tube and coaxially arranged with the energy-absorbing outer tube, one end of which is connected to the anti-climbing tooth, and the other end of which extends into the open end of the reservoir tube and slides in cooperation with the inner cavity of the reservoir tube, the guide tube being configured to slide along the axial direction of the inner cavity during the collapse of the energy-absorbing outer tube to change the volume of the inner cavity; wherein, in response to the volume change in the inner cavity, the reservoir tube causes the hydraulic oil to flow out from the reservoir tube to absorb at least a portion of the energy when the rail vehicle is impacted by an external force.

[0008] According to some embodiments of this disclosure, a plurality of first throttling orifices are provided on the closed end of the liquid storage tube, and each of the first throttling orifices is provided with: a valve body, one end of which is connected to the closed end of the liquid storage tube and communicates with the inner cavity of the liquid storage tube, and the other end of which is provided with a valve hole; a valve core disposed in the valve body; and an elastic element connected to the valve core, wherein the elastic element is configured to drive the valve core to move within the valve body according to the pressure of the hydraulic oil, so as to adjust the opening degree of the valve hole.

[0009] According to some embodiments of this disclosure, when the other end of the guide tube is in the initial position of the inner cavity, the pressure of the hydraulic oil is less than the preload of the elastic element, causing the valve orifice to close.

[0010] According to some embodiments of this disclosure, when the anti-climbing tooth is in a first stressed state, the guide tube moves along the inner cavity toward the direction of the first throttling orifice, so that the pressure of the hydraulic oil is greater than the preload of the elastic element, so as to open the valve orifice to release energy, thereby balancing the pressure in the inner cavity.

[0011] According to some embodiments of this disclosure, a plurality of second throttling holes are provided on the other end of the guide tube, and the plurality of second throttling holes are sealed by a sealing sheet.

[0012] According to some embodiments of this disclosure, the guide tube is configured to have a cavity. When the anti-climb tooth is in a second stress state, the guide tube extends into the cavity, causing a portion of the hydraulic oil to flow out through the valve hole, and another portion of the hydraulic oil to break through the sealing sheet in the opposite direction of the collision direction and flow into the cavity through a plurality of second throttling holes to release energy.

[0013] According to some embodiments of the present disclosure, in the case that the energy generated when the above rail vehicle is subjected to an external force collision is attenuated and the above energy-absorbing outer tube collapses slowly, the pressure of the above hydraulic oil is less than the pre-tightening force of the above elastic member, so that the above valve hole is closed to balance the pressure in the above inner cavity.

[0014] According to some embodiments of another aspect of the present disclosure, a vehicle head of a rail vehicle is provided, comprising: the above energy-absorbing anti-climbing device for the rail vehicle; wherein, in the case that the above vehicle head collides with another rail vehicle, the above energy-absorbing anti-climbing device and the energy-absorbing anti-climbing device of the above another rail vehicle engage with each other, and the energy-absorbing outer tube of the above energy-absorbing anti-climbing device collapses to absorb the energy generated when the above vehicle head is subjected to an external force collision.

[0015] According to some embodiments of the present disclosure, the vehicle head of the rail vehicle comprises at least two of the above energy-absorbing anti-climbing devices, which are symmetrically arranged on both sides of the above vehicle head along the width direction of the above vehicle head.

[0016] According to some embodiments of the present disclosure, an energy-absorbing anti-climbing device for a rail vehicle and a vehicle head of a rail vehicle are provided, the energy-absorbing anti-climbing device comprising a mounting seat, an energy-absorbing outer tube and a buffer assembly, the mounting seat being arranged at the front end of the rail vehicle, the energy-absorbing outer tube being connected to one side of the mounting seat, the end of the energy-absorbing outer tube away from the mounting seat being provided with anti-climbing teeth, the energy-absorbing outer tube being configured to collapse in the direction of approaching the mounting seat along the axial direction of itself in the case that the anti-climbing teeth are subjected to an external force collision, the buffer assembly being arranged on the mounting seat, the buffer assembly being configured to provide a damping force opposite to the collision direction in response to the collapse state of the energy-absorbing outer tube, thereby stably absorbing at least part of the energy when the rail vehicle is subjected to an external force collision, the energy-absorbing amount being large, the reliability being high, and the demand for lightening of the rail vehicle being met, thereby greatly improving the passive safety of the rail vehicle and maximizing the safety of the driver and passengers. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a perspective view of an energy-absorbing anti-climbing device for a rail vehicle according to an illustrative embodiment of the present disclosure;

[0019] Figure 2 is a cross-sectional view of an energy-absorbing anti-climbing device for a rail vehicle according to an illustrative embodiment of the present disclosure.

[0020] In the drawings, the meanings of the reference signs are as follows:

[0021] 1. mounting seat;

[0022] 2. energy-absorbing outer tube;

[0023] 3. Anti-creep tooth

[0024] 31. Protrusion

[0025] 32. Groove

[0026] 4. Liquid storage tube

[0027] 5. Guide tube

[0028] 6. First orifice

[0029] 61. Valve body

[0030] 62. Valve hole

[0031] 7. Second orifice DETAILED DESCRIPTION

[0032] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood, however, that the description which follows is merely exemplary and is not intended to limit the scope of the present disclosure. In the following detailed description of embodiments of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. However, it would be apparent to one skilled in the art that the embodiments of the present disclosure can be practiced without these specific details. In other instances, well-known structures and functions have not been described in detail in order to avoid obscuring aspects of the present disclosure.

[0033] The terms used herein are merely used to describe specific embodiments and are not intended to limit the present disclosure. The terms "include" and "have" and the like used herein indicate the presence of the described features, steps, operations, and / or components but do not preclude the presence or addition of one or more other features, steps, operations, or components.

[0034] All terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings consistent with the context of the present description, and should not be interpreted in an idealized or overly formal way.

[0035] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should generally be interpreted to include at least one of each item enumerated, unless otherwise defined. For example, "a system having at least one of A, B, and C" should be interpreted to include a system having at least one of A, a system having at least one of B, a system having at least one of C, a system having at least one of A and B, a system having at least one of A and C, a system having at least one of B and C, and / or a system having at least one of A, B, and C, etc.

[0036] In order to make the energy-absorbing anti-climbing device not occupy a large amount of external space and meet the demand of lightening the rail vehicle, according to the inventive concept of the present disclosure, the energy-absorbing anti-climbing device comprises a mounting seat, an energy-absorbing outer pipe and a buffer assembly, the mounting seat is arranged at the front end of the rail vehicle, the energy-absorbing outer pipe is connected to one side of the mounting seat, the end of the energy-absorbing outer pipe away from the mounting seat is provided with anti-climbing teeth, the energy-absorbing outer pipe is configured to collapse in the axial direction thereof towards the mounting seat in the case that the anti-climbing teeth are collided by external force, the buffer assembly is arranged on the mounting seat, the buffer assembly is configured to provide a damping force opposite to the collision direction in response to the collapse state of the energy-absorbing outer pipe, so as to stably absorb the energy of the rail vehicle when the rail vehicle is collided by external force, the energy-absorbing capacity is large, the reliability is high, the demand of lightening the rail vehicle can be met, the passive safety of the rail vehicle can be greatly improved, and the safety of the driver and passengers can be maximally ensured.

[0037] In order to make the purpose, technical solution and advantages of the present disclosure more clear and explicit, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the drawings.

[0038] Figure 1 is a perspective view of an energy-absorbing anti-climbing device for a rail vehicle according to an exemplary embodiment of the present disclosure. Figure 2 is a sectional view of an energy-absorbing anti-climbing device for a rail vehicle according to an exemplary embodiment of the present disclosure.

[0039] The embodiments of the present disclosure provide an energy-absorbing anti-climbing device for a rail vehicle, as shown in Figure 1 and Figure 2 , comprising a mounting seat 1, an energy-absorbing outer pipe 2 and a buffer assembly. The mounting seat 1 is arranged at the front end of the rail vehicle. The energy-absorbing outer pipe 2 is connected to one side of the mounting seat 1, the end of the energy-absorbing outer pipe 2 away from the mounting seat 1 is provided with anti-climbing teeth 3, and the energy-absorbing outer pipe 2 is configured to collapse in the axial direction thereof towards the mounting seat 1 in the case that the anti-climbing teeth 3 are collided by external force. The buffer assembly is arranged on the mounting seat 1, and the buffer assembly is configured to provide a damping force opposite to the collision direction in response to the collapse state of the energy-absorbing outer pipe 2, so as to absorb at least part of the energy of the rail vehicle when the rail vehicle is collided by external force.

[0040] According to the embodiments of the present disclosure, the mounting seat 1 is combined on the vehicle body at the front end of the rail vehicle through threads, can be separately made according to the structure of different types of rail vehicles, or can be pre-installed on the vehicle body when the rail vehicle is manufactured.

[0041] According to the embodiment of the present disclosure, the energy-absorbing outer tube 2 can be a thin-walled steel tube. In the case that the anti-climbing tooth 3 is subjected to external force impact, the energy-absorbing outer tube 2 collapses in the axial direction thereof towards the mounting base 1, thereby stably absorbing at least part of the energy when the rail vehicle is subjected to external force impact. After the rail vehicle is subjected to impact and the energy-absorbing outer tube 2 is collapsed for energy absorption, only the energy-absorbing outer tube 2 needs to be replaced during subsequent maintenance of the rail vehicle, and the entire energy-absorbing anti-climbing device does not need to be replaced, thereby improving the efficiency of subsequent maintenance of the rail vehicle and reducing the maintenance cost after the accident.

[0042] According to the embodiment of the present disclosure, the energy-absorbing anti-climbing device comprises a mounting base 1, an energy-absorbing outer tube 2 and a buffer assembly. The mounting base 1 is arranged at the front end of the rail vehicle. The energy-absorbing outer tube 2 is connected to one side of the mounting base 1. An end of the energy-absorbing outer tube 2 away from the mounting base 1 is provided with an anti-climbing tooth 3. The energy-absorbing outer tube 2 is configured to collapse in the axial direction thereof towards the mounting base 1 in the case that the anti-climbing tooth 3 is subjected to external force impact. The buffer assembly is arranged on the mounting base 1. The buffer assembly is configured to provide a damping force opposite to the impact direction in response to the collapse state of the energy-absorbing outer tube 2. The energy-absorbing anti-climbing device can stably absorb at least part of the energy when the rail vehicle is subjected to external force impact by means of the buffer assembly cooperating with the energy-absorbing outer tube 2. The energy-absorbing amount is large, the reliability is high, and the demand for lightening of the rail vehicle can be met. The passive safety of the rail vehicle can be greatly improved, and the safety of the driver and passengers can be maximally ensured.

[0043] According to the embodiment of the present disclosure, as shown in Figure 2 The anti-climbing tooth 3 has protrusions 31 arranged at intervals. A groove 32 is arranged between adjacent protrusions 31. In the case that the rail vehicle collides with another rail vehicle, the protrusions 31 and the grooves 32 are engaged with the anti-climbing tooth of the other rail vehicle.

[0044] According to the embodiment of the present disclosure, the protrusions 31 arranged at intervals and the grooves 32 arranged between adjacent protrusions 31 extend in the vehicle width direction of the rail vehicle. In the case that a collision occurs, the protrusions 31 and the grooves 32 are engaged with the anti-climbing tooth of the other rail vehicle, thereby preventing the two rail vehicles from climbing over each other under the action of the impact force and maintaining the relative positions of the vehicle bodies of the two rail vehicles. In the case that a collision occurs, the protrusions 31 and the grooves 32 extend in the vehicle width direction, and the protrusions 31 and the grooves 32 can guide the impact force to disperse along the path of the protrusions 31 and the grooves 32, thereby reducing the impact force transmitted to the vehicle body, maintaining the stability of the vehicle body of the rail vehicle, reducing the damage to the vehicle body, and reducing the maintenance cost after the accident.

[0045] According to the embodiment of the present disclosure, as shown in Figure 2As shown, the buffer assembly includes a reservoir tube 4 and a guide tube 5. The open end of the reservoir tube 4 is connected to the other side of the mounting base 1, and the inner cavity of the reservoir tube 4 is filled with hydraulic oil. The guide tube 5 is arranged inside the energy-absorbing outer tube 2 and coaxially arranged with the energy-absorbing outer tube 2. One end of the guide tube 5 is connected to the anti-climb tooth 3, and the other end of the guide tube 5 extends into the open end of the reservoir tube 4 and is in sliding fit with the inner cavity of the reservoir tube 4. The guide tube 5 is configured to slide in the axial direction of the inner cavity during the collapse of the energy-absorbing outer tube 2 to change the volume of the inner cavity. The reservoir tube 4 causes the hydraulic oil to flow out of the reservoir tube 4 in response to the volume change in the inner cavity to absorb at least part of the energy when the railway vehicle is subjected to external force collision.

[0046] According to the embodiment of the present disclosure, the guide tube 5 slides in the axial direction of the inner cavity during the collapse of the energy-absorbing outer tube 2, at which time the guide tube 5 acts as a piston in the inner cavity of the reservoir tube 4 to change the volume of the inner cavity. The guide tube 5 converts the kinetic energy absorbed by the collapse of the energy-absorbing outer tube 2 into a volume change in the inner cavity of the reservoir tube 4 and causes the hydraulic oil to flow out of the reservoir tube 4 through hydraulic pressure, which reduces the overall weight of the energy-absorbing anti-climb device and meets the demand for lightweight of the railway vehicle while ensuring the stability of the energy-absorbing capacity.

[0047] According to the embodiment of the present disclosure, a plurality of first throttling holes 6 are arranged on the closed end of the reservoir tube 4, and a valve body 61, a valve core and an elastic member are arranged in each first throttling hole 6. One end of the valve body 61 is connected to the closed end of the reservoir tube 4 and communicates with the inner cavity of the reservoir tube 4, and the other end of the valve body 61 is provided with a valve hole 62. The valve core is arranged in the valve body 61. The elastic member is connected to the valve core and is configured to drive the valve core to move in the valve body 61 according to the pressure of the hydraulic oil to adjust the opening degree of the valve hole 62.

[0048] According to the embodiment of the present disclosure, the elastic member drives the valve core to move in the valve body 61 according to the pressure of the hydraulic oil to adjust the opening degree of the valve hole 62. During the gradual opening of the valve hole 62, the hydraulic oil can be smoothly caused to flow out of the inner cavity of the reservoir tube 4, avoiding instability caused by sudden increase in flow rate. At the same time, the valve hole 62 can control the speed of the hydraulic oil flowing out. The elastic member appropriately adjusts the opening degree of the valve hole 62 in response to the pressure change of the hydraulic oil, which can realize the load retention of the reservoir tube 4. The valve hole 62 can also limit the maximum flow rate of the hydraulic oil to prevent damage due to excessive flow rate.

[0049] According to the embodiment of the present disclosure, in the case that the other end of the guide tube 5 is located at the initial position of the inner cavity, the pressure of the hydraulic oil is less than the pre-tightening force of the elastic member, so that the valve hole 62 is closed.

[0050] According to the embodiment of the present disclosure, when the anti-climb tooth 3 is not subjected to external force impact, the energy-absorbing outer tube 2 does not collapse, the guide tube 5 extending into the opening end of the liquid storage tube 4 does not slide along the axial direction of the inner cavity of the liquid storage tube 4, at this time, the other end of the guide tube 5 is in the initial position of the inner cavity, the volume of the inner cavity of the liquid storage tube 4 does not change, and the pressure of the hydraulic oil is less than the pre-tightening force of the elastic member, so that the valve hole 62 is closed.

[0051] According to the embodiment of the present disclosure, when the anti-climb tooth 3 is in the first force state, the guide tube 5 moves along the inner cavity to the direction close to the first throttle hole 6, so that the pressure of the hydraulic oil is greater than the pre-tightening force of the elastic member to open the valve hole 62 for energy release, thereby balancing the pressure in the inner cavity.

[0052] According to the embodiment of the present disclosure, the elastic member drives the valve core to move in the valve body 61 according to the pressure of the hydraulic oil, thereby automatically adjusting the opening degree of the valve hole 62 and maintaining the stable pressure in the inner cavity of the liquid storage tube 4.

[0053] According to the embodiment of the present disclosure, when the anti-climb tooth 3 is in the first force state, that is, the anti-climb tooth 3 is subjected to slight external force impact, the guide tube 5 moves along the inner cavity to the direction close to the first throttle hole 6, at this time, the volume of the inner cavity of the liquid storage tube 4 becomes smaller, so that the pressure of the hydraulic oil is greater than the pre-tightening force of the elastic member to partially open the valve hole 62, and part of the hydraulic oil flows out of the liquid storage tube 4 for energy release. When the energy of the external force impact on the anti-climb tooth 3 increases (the impact force increases), the guide tube 5 further moves along the inner cavity to the direction close to the first throttle hole 6, at this time, the volume of the inner cavity of the liquid storage tube 4 further becomes smaller, so that the pressure of the hydraulic oil is greater than the pre-tightening force of the elastic member to completely open the valve hole 62, and most of the hydraulic oil flows out of the liquid storage tube 4 for energy release, thereby balancing the pressure in the inner cavity.

[0054] According to the embodiment of the present disclosure, as shown in Figure 2 , a plurality of second throttle holes 7 are arranged on the other end of the guide tube 5, and the plurality of second throttle holes 7 are all sealed by the sealing sheet.

[0055] According to the embodiment of the present disclosure, the sealing sheet is made of a material with corrosion resistance, wear resistance, certain hardness and elasticity, for example, plastic, the shape of each sealing sheet is matched with the shape of the plurality of second throttle holes 7 to ensure the sealing effect. Each sealing sheet can be fixed around the plurality of second throttle holes 7 by pressing, welding or threaded connection, etc. to seal the plurality of second throttle holes 7.

[0056] According to the embodiment of the present disclosure, the diameters of the plurality of second throttle holes 7 are fixed, and the plurality of second throttle holes 7 are all sealed by the sealing sheet, so that when the anti-climb tooth 3 is in the first force state, the hydraulic oil will not flow into the guide tube 5 in the direction opposite to the impact direction.

[0057] According to the embodiment of the present disclosure, the guide pipe 5 is configured to have a cavity, and when the anti-climbing tooth 3 is in the second force state, the guide pipe 5 extends into the inner cavity, so that part of the hydraulic oil flows out through the valve hole 62, and another part of the hydraulic oil breaks the sealing sheet in the opposite direction of the collision direction and flows into the cavity through the plurality of second throttling holes 7 to release energy.

[0058] According to the embodiment of the present disclosure, when the anti-climbing tooth 3 is in the second force state, that is, the energy of the external force collision on the anti-climbing tooth 3 is increased compared with the first force state (collision force is increased), the guide pipe 5 extends into the inner cavity, and at this time, the inner cavity volume of the liquid storage pipe 4 is further smaller than that in the first force state, so that the pressure of the hydraulic oil is much greater than the pre-tightening force of the elastic member. The sudden increase in the pressure of the hydraulic oil cannot be released through the valve hole 62 of the first throttling hole 6 instantaneously, at this time, part of the hydraulic oil flows out through the valve hole 62, and another part of the hydraulic oil breaks the sealing sheet in the opposite direction of the collision direction and sprays into the cavity through the plurality of second throttling holes 7 to release energy, at this time, the plurality of second throttling holes 7 serve as auxiliary throttling, which can smoothly absorb the energy of the anti-climbing tooth 3 when it is subjected to external force collision, and greatly improve the energy absorption. In the process of absorbing the energy of the anti-climbing tooth 3 when it is subjected to external force collision, about half of the hydraulic oil in the liquid storage pipe 4 sprays into the cavity of the guide pipe 5, which fully utilizes the cavity of the energy-absorbing anti-climbing device itself as a liquid storage container, avoiding occupying a large amount of external space.

[0059] According to the embodiment of the present disclosure, in the case that the energy generated when the rail vehicle is subjected to external force collision is attenuated and the energy-absorbing outer pipe 2 collapses slowly, the pressure of the hydraulic oil is less than the pre-tightening force of the elastic member, so that the valve hole 62 is closed to balance the pressure in the inner cavity.

[0060] According to the embodiment of the present disclosure, in the case that the energy generated when the rail vehicle is subjected to external force collision is attenuated and the energy-absorbing outer pipe 2 collapses slowly, the guide pipe 5 will not move along the inner cavity to the direction close to the first throttling hole 6, and the inner cavity volume of the liquid storage pipe 4 will not be smaller than that at the last moment, at this time, the pressure of the hydraulic oil is less than the pre-tightening force of the elastic member, so that the valve hole 62 of the first throttling hole 6 becomes smaller until it is closed. In the process of reducing the valve hole 62, the stable throttling pressure can stably make the hydraulic oil no longer flow out of the inner cavity of the liquid storage pipe 4, avoiding the instability caused by the sudden reduction of the flow.

[0061] According to an embodiment of the present disclosure, after the rail vehicle is subjected to an external force collision, the buffer energy absorption of the energy-absorbing anti-climbing device can be summarized as the following three stages. In the first stage, the anti-climbing tooth 3 is subjected to a slight external force collision, the energy-absorbing outer tube 2 slightly collapses in the axial direction thereof towards the mounting base 1, the guide tube 5 starts to move in the inner cavity towards the first throttling hole 6, at this time, the volume of the inner cavity of the liquid storage tube 4 is reduced, so that the pressure of the hydraulic oil is greater than the pre-tightening force of the elastic member, to partially open the valve hole 62, and part of the hydraulic oil flows out of the liquid storage tube 4 to release energy. In the second stage, the anti-climbing tooth 3 is subjected to an increased external force collision (increased collision force), the energy-absorbing outer tube 2 further collapses in the axial direction thereof towards the mounting base 1, the guide tube 5 further moves in the inner cavity towards the first throttling hole 6, at this time, the volume of the inner cavity of the liquid storage tube 4 is further reduced, so that the pressure of the hydraulic oil is greater than the pre-tightening force of the elastic member, the flow of the hydraulic oil flowing out of the liquid storage tube 4 is increased, to completely open the valve hole 62, and most of the hydraulic oil flows out of the liquid storage tube 4 to release energy. In the third stage, the anti-climbing tooth 3 is subjected to an increased external force collision compared to the second stage (increased collision force), the energy-absorbing outer tube 2 collapses in the axial direction thereof towards the mounting base 1, most of the guide tube 5 extends into the inner cavity, at this time, the volume of the inner cavity of the liquid storage tube 4 is suddenly reduced compared to the volume of the inner cavity of the liquid storage tube 4 in the second stage, so that the pressure of the hydraulic oil is much greater than the pre-tightening force of the elastic member, the sudden increase in the pressure of the hydraulic oil cannot be released through the valve hole 62 of the first throttling hole 6, at this time, part of the hydraulic oil flows out through the valve hole 62, and another part of the hydraulic oil breaks the sealing sheet in the opposite direction of the collision direction and is injected into the cavity through the plurality of second throttling holes 7 to release energy. By using the hydraulic energy absorption of the liquid storage tube 4 and the guide tube 5 in cooperation with the mechanical collapse energy absorption of the energy-absorbing outer tube 2, the energy-absorbing anti-climbing device can stably absorb the energy of the rail vehicle subjected to an external force collision, has a large energy absorption capacity, has high reliability, and can meet the lightweight demand of the rail vehicle, greatly improves the passive safety of the rail vehicle, and can maximize the safety of the driver and passengers.

[0062] According to another embodiment of the present disclosure, a vehicle head of a rail vehicle is provided, which comprises the above-mentioned energy-absorbing anti-climbing device for a rail vehicle. In the case of a collision between the vehicle head and another rail vehicle, the energy-absorbing anti-climbing device of the vehicle head and the energy-absorbing anti-climbing device of the other rail vehicle engage with each other, and the energy-absorbing outer tube 2 of the energy-absorbing anti-climbing device collapses to absorb the energy generated when the vehicle head is subjected to an external force collision.

[0063] According to the embodiment of the present disclosure, in the case of collision between the vehicle head and another rail vehicle, the energy-absorbing anti-climbing device and the energy-absorbing anti-climbing device of another rail vehicle are engaged with each other, and the energy-absorbing outer tube 2 of the energy-absorbing anti-climbing device of each rail vehicle collapses in the respective axial direction towards the respective mounting seat 1, so as to absorb the energy generated when the external force collides, and prevent the two rail vehicles from climbing each other under the action of the collision force, so as to maintain the relative position of the two rail vehicle bodies. At the same time, the energy-absorbing anti-climbing device arranged at the front end of the rail train can realize the compatibility and standardization between different rail vehicle models, so as to facilitate subsequent maintenance and replacement.

[0064] According to the embodiment of the present disclosure, the vehicle head of the rail vehicle comprises at least two energy-absorbing anti-climbing devices, and the two energy-absorbing anti-climbing devices are symmetrically arranged on both sides of the vehicle head along the width direction of the vehicle head.

[0065] According to the embodiment of the present disclosure, two energy-absorbing anti-climbing devices are symmetrically arranged along the width direction of the vehicle head, which can disperse the collision force generated when the two rail vehicles collide, and can provide all-round protection on both sides of the vehicle head. Whether it is a head-on collision or a side collision with a certain angle, the two energy-absorbing anti-climbing devices can effectively absorb the energy generated when the external force collides, reduce the impact force transmitted to the vehicle body of the rail vehicle, maintain the stability of the vehicle body of the rail vehicle, and minimize the risk of injury to the driver and passengers. At the same time, the damage to the vehicle body is reduced, and the maintenance cost after the accident is reduced.

[0066] The above describes the embodiments of the present disclosure. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The present disclosure does not deviate from the scope of the present disclosure, and those skilled in the art can make various substitutions and modifications, which should fall within the scope of the present disclosure.

Claims

1. An energy-absorbing anti-climber for a railway vehicle, characterized in that Comprising: a mounting base arranged at a front end of a rail vehicle; an energy-absorbing outer tube connected to one side of the mounting base, an end of the energy-absorbing outer tube away from the mounting base being provided with an anti-climbing tooth, the energy-absorbing outer tube being configured to collapse in an axial direction of the energy-absorbing outer tube towards the mounting base when the anti-climbing tooth is subjected to an external force impact; a buffer assembly comprising: a liquid storage tube, an open end of the liquid storage tube being connected to the other side of the mounting base, an inner cavity of the liquid storage tube being filled with hydraulic oil; a guide tube arranged inside the energy-absorbing outer tube and coaxially arranged with the energy-absorbing outer tube, the guide tube having a cavity inside, one end of the guide tube being connected to the anti-climbing tooth, the other end of the guide tube being provided with a plurality of second throttling holes and extending into the open end of the liquid storage tube and being in sliding fit with the inner cavity of the liquid storage tube, the plurality of second throttling holes being sealed by sealing sheets, the guide tube being configured to slide in the axial direction of the inner cavity during the collapse of the energy-absorbing outer tube when the anti-climbing tooth is in a second force state, so as to change the volume of the inner cavity, the liquid storage tube responding to the volume change in the inner cavity to cause a part of the hydraulic oil to flow out of the liquid storage tube to absorb at least part of the energy generated when the rail vehicle is subjected to an external force impact; meanwhile, another part of the hydraulic oil breaks through the sealing sheets in the opposite direction of the impact direction and flows into the cavity through the plurality of second throttling holes to release energy.

2. The energy-absorbing anti-climber for a rail vehicle according to claim 1, characterized in that the anti-climbing tooth is provided with protrusions arranged at intervals, recesses being arranged between adjacent protrusions to engage with the anti-climbing tooth connected to another rail vehicle in a concave-convex manner when the rail vehicle collides with the other rail vehicle.

3. The energy-absorbing anti-climber for a rail vehicle of claim 1, characterized in that the closed end of the liquid storage tube is provided with a plurality of first throttling holes, each of the first throttling holes being provided with: a valve body, one end of the valve body being connected to the closed end of the liquid storage tube and being in communication with the inner cavity of the liquid storage tube, the other end of the valve body being provided with a valve hole; a valve core arranged in the valve body; an elastic member connected to the valve core, the elastic member being configured to drive the valve core to move in the valve body according to the pressure of the hydraulic oil to adjust the opening degree of the valve hole.

4. The energy-absorbing anti-climber for a railway vehicle according to claim 3, characterized in that when the other end of the guide tube is located at an initial position of the inner cavity, the pressure of the hydraulic oil is less than the pre-tightening force of the elastic member, so that the valve hole is closed.

5. The energy-absorbing anti-climber for a railway vehicle according to claim 3, characterized in that, when the anti-climbing tooth is in a first force state, the guide tube moves in the inner cavity towards the first throttling hole, so that the pressure of the hydraulic oil is greater than the pre-tightening force of the elastic member to open the valve hole to release energy, thereby balancing the pressure in the inner cavity.

6. The energy-absorbing anti-climber for a railway vehicle according to claim 3, characterized in that when the energy generated when the rail vehicle is subjected to an external force impact is attenuated and the energy-absorbing outer tube collapses slowly, the pressure of the hydraulic oil is less than the pre-tightening force of the elastic member, so that the valve hole is closed to balance the pressure in the inner cavity.

7. A head for a rail vehicle, characterized in that Comprising: the energy-absorbing anti-climbing device for a rail vehicle according to any one of claims 1-6; when the front end collides with another rail vehicle, the energy-absorbing anti-climbing device and the energy-absorbing anti-climbing device of the other rail vehicle engage with each other, the energy-absorbing outer tube of the energy-absorbing anti-climbing device collapses to absorb the energy generated when the front end is subjected to an external force impact.

8. The vehicle head of claim 7, wherein, The energy-absorbing anti-crawling device comprises at least two energy-absorbing anti-crawling devices, which are symmetrically arranged on both sides of the vehicle head along the width direction of the vehicle head.

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