Anti-creep energy absorption device and rail vehicle

Abstract

The embodiment of the application provides a kind of anti-climbing energy-absorbing device and railway vehicle, wherein the anti-climbing energy-absorbing device includes: mounting seat, for fixed to the front end of vehicle;Mounting seat is equipped with locking assembly;Base, rotationally connected with mounting seat;Locking assembly can lock base when base rotates to service state, with good reliability and energy-absorbing effect;Energy-absorbing body, one end is arranged on base, can rotate synchronously with base to storage state or service state;When energy-absorbing body is in storage state, it extends along the width direction of vehicle, can reduce the occupation of front end space of vehicle;Energy-absorbing body extends along the front-back direction of vehicle when it is in service state;Anti-climbing tooth, set to the other end of energy-absorbing body;Air bag pushing assembly, set to the side of energy-absorbing body in storage state, for exerting thrust on energy-absorbing body to make it rotate relative to mounting seat, with fast response capability and reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to rail vehicle collision cushion technology, in particular to a climbing prevention energy absorption device and a rail vehicle. BACKGROUND

[0002] Rail passenger cars run at high speed and carry many passengers, and need to have good crashworthiness. A climbing prevention energy absorption device is usually arranged at the front end of the cab to dissipate collision kinetic energy through plastic deformation during a collision at the front end of the car, which can effectively reduce the impact load borne by the car body and minimize personnel casualties and property losses.

[0003] The common climbing prevention energy absorption device is directly installed on the front end interface of the car body and always faces forward and protrudes a certain length forward during service, protruding the front end of the vehicle. However, in fact, within the effective life of the vehicle, the probability of unexpected collision is very low, and the climbing prevention energy absorption device is rarely used. The design of the climbing prevention energy absorption device protruding at the front end of the vehicle not only occupies the space at the front end of the vehicle for a long time, but also destroys the aerodynamic shape of the front end of the vehicle, increases the wind resistance, and also affects the overall appearance of the vehicle.

[0004] In related technologies, there are also some schemes of folding and storing the climbing prevention energy absorption device, but there are more or less some problems, for example: in some schemes, the mechanism for pushing the climbing prevention energy absorption device to unfold adopts a connecting rod mechanism, which has a slow unfolding speed and a relatively complex structure, which is easy to cause unfolding failure, and some climbing prevention energy absorption devices are not fixed or locked after unfolding, so that the climbing prevention energy absorption device cannot maintain the forward state after unfolding, thereby failing to achieve good energy absorption effect during the collision process. SUMMARY

[0005] In order to solve one of the above technical defects, the climbing prevention energy absorption device and the rail vehicle are provided in the embodiments of the present application.

[0006] According to a first aspect of the embodiments of the present application, a climbing prevention energy absorption device is provided, comprising:

[0007] A mounting seat is used for being fixed to the front end of the vehicle, and the mounting seat is provided with a locking assembly;

[0008] A base is rotationally connected with the mounting seat, and the locking assembly can lock the base when the base is rotated to a service state;

[0009] An energy absorption body is arranged at one end of the base and can be synchronously rotated with the base to a storage state or a service state; the energy absorption body extends in the width direction of the vehicle when in the storage state; and the energy absorption body extends in the front-rear direction of the vehicle when in the service state;

[0010] A climbing prevention tooth is arranged at the other end of the energy absorption body;

[0011] The air bag pushing assembly is arranged at the side of the energy-absorbing body in the storage state, and is used for applying a pushing force to the energy-absorbing body to rotate the energy-absorbing body relative to the mounting base.

[0012] According to a second aspect of the embodiments of the present application, an anti-climbing energy-absorbing device is provided.

[0013] The mounting base is used for being fixed to the front end of the vehicle; the base can be rotated relative to the mounting base to the storage state or the ready state; the mounting base is provided with a locking assembly, and the locking assembly can lock the base when the base is rotated to the ready state, thereby having good reliability and energy-absorbing effect, improving the safety of passengers, and reducing the damage of the vehicle; one end of the energy-absorbing body is arranged on the base and can rotate synchronously with the base; the energy-absorbing body extends along the width direction of the vehicle in the storage state, thereby reducing the occupation of the space at the front end of the vehicle; the energy-absorbing body extends along the front-rear direction of the vehicle in the ready state; the anti-climbing tooth is arranged at the other end of the energy-absorbing body; and the air bag pushing assembly is arranged at the side of the energy-absorbing body in the storage state, and can work quickly when an impact is about to occur, thereby pushing the energy-absorbing body to rotate to the ready state, and having good response capability and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the present application, form a part of the present application and are included to further explain the present application and, together with the specification, serve to explain the present application. In the drawings:

[0015] Figure 1 A structure schematic view of the anti-climbing energy-absorbing device in the storage state is provided for the embodiments of the present application;

[0016] Figure 2 A structure schematic view of the anti-climbing energy-absorbing device in the ready state is provided for the embodiments of the present application;

[0017] Figure 3 A structure schematic view of the anti-climbing energy-absorbing device arranged at the front end of the vehicle in the storage state is provided for the embodiments of the present application;

[0018] Figure 4 A structure schematic view of the anti-climbing energy-absorbing device arranged at the front end of the vehicle in the ready state is provided for the embodiments of the present application;

[0019] Figure 5 An explosion view of the anti-climbing energy-absorbing device is provided for the embodiments of the present application;

[0020] Figure 6 A structure schematic view of the mounting base in the anti-climbing energy-absorbing device is provided for the embodiments of the present application;

[0021] Figure 7 Partial enlarged view of the mounting seat of the anti-climbing energy-absorbing device provided in the embodiments of the present application;

[0022] Figure 8 Structural schematic view of the base of the anti-climbing energy-absorbing device provided in the embodiments of the present application;

[0023] Figure 9 Side view of the base of the anti-climbing energy-absorbing device provided in the embodiments of the present application;

[0024] Figure 10 Schematic view of the anti-climbing energy-absorbing device in the initial state of mutual impact provided in the embodiments of the present application;

[0025] Figure 11 Schematic view of the anti-climbing energy-absorbing device in the state of mutual impact and energy absorption provided in the embodiments of the present application;

[0026] Figure 12 Control logic schematic view of the action of the anti-climbing energy-absorbing device provided in the embodiments of the present application.

[0027] Reference signs:

[0028] 1 - mounting seat; 11 - rotating shaft; 12 - mounting notch; 13 - connecting lug;

[0029] 2 - base; 21 - top plate; 211 - through hole; 212 - planing blade; 22 - bottom plate; 221 - shaft hole; 222 - locking groove; 223 - bulging part; 224 - guide groove; 23 - support column;

[0030] 3 - energy-absorbing main body; 31 - energy-absorbing protrusion;

[0031] 4 - anti-climbing tooth;

[0032] 5 - air bag pushing assembly;

[0033] 6 - locking assembly; 61 - buckle; 62 - spring piece;

[0034] 7 - cab. DETAILED DESCRIPTION

[0035] In order to make the technical solutions and advantages in the embodiments of the present application more clear and apparent, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0036] This embodiment provides an anti-climb energy-absorbing device for installation at the front of the driver's cab of a rail vehicle. During normal operation of the rail vehicle, the anti-climb energy-absorbing device is in a retracted state, extending along the width of the vehicle, saving space at the front of the vehicle. When there is an obstacle at the front of the vehicle and a collision is imminent, the anti-climb energy-absorbing device can quickly rotate and unfold to a forward-facing ready position and be firmly fixed in that position, exhibiting high reliability.

[0037] like Figures 1 to 5 As shown, the anti-climb energy-absorbing device includes: a mounting base 1, a base 2, an energy-absorbing body 3, anti-climb teeth 4, and an airbag propulsion assembly. The mounting base 1 is used to fix the device to the front beam of the vehicle's cab 7, for example, by welding, bolting, or snap-fitting.

[0038] The base 2 is rotatably connected to the mounting base 1. One end of the energy-absorbing body 3 is mounted on the base 2, and the other end is equipped with anti-climb teeth 4. In the event of a head-on collision between two vehicles, the anti-climb teeth 4 of the two vehicles contact and engage to achieve the anti-climb function. The energy-absorbing body 3 rotates synchronously with the base 2, and can be rotated to a retracted state or a ready-to-go state. The airbag propulsion assembly 5 is located on the side of the energy-absorbing body 3 when it is in the retracted state, and is used to apply thrust to the energy-absorbing body 3 to make it rotate relative to the mounting base 1. A fairing can be installed at the front end of the energy-absorbing body 3.

[0039] The energy-absorbing body 3 has a columnar structure. When it is in the retracted state, the energy-absorbing body 3 extends along the width of the vehicle. When an obstacle is detected in front of the vehicle and an impact is imminent, the airbag push assembly 5 quickly rotates the energy-absorbing body 3 to the ready state. At this time, the energy-absorbing body 3 extends along the front and rear directions of the vehicle to absorb impact energy during the impact, reduce the amount of damage to the vehicle body, and protect the safety of the occupants.

[0040] In addition, a locking component 6 is provided on the mounting base 1, which locks the base 2 when the energy-absorbing body 3 is rotated to the ready state, so that the energy-absorbing body 3 is firmly in the position facing the front and rear directions of the vehicle. The anti-climb teeth can collide head-on with the anti-climb teeth of the oncoming vehicle and deform and absorb energy along the center line of the energy-absorbing body 3, which has a high energy absorption effect.

[0041] The technical scheme provided by the embodiment adopts the mounting seat, the base, the energy absorption body, the anti-climbing tooth and the air bag pushing assembly, wherein the mounting seat is used for being fixed to the front end of the vehicle; the base can be rotated relative to the mounting seat to a storage state or a ready state; the mounting seat is provided with a locking assembly, and the locking assembly can lock the base when the base is rotated to the ready state, thereby having good reliability and energy absorption effect, improving the safety of the occupant and reducing the damage of the vehicle; one end of the energy absorption body is arranged on the base and can rotate synchronously with the base; the energy absorption body extends along the width direction of the vehicle when being in the storage state, thereby reducing the occupation of the space at the front end of the vehicle; the energy absorption body extends along the front-rear direction of the vehicle when being in the ready state; the anti-climbing tooth is arranged at the other end of the energy absorption body; and the air bag pushing assembly is arranged at the side of the energy absorption body in the storage state, and can work quickly when the impact is about to occur, thereby pushing the energy absorption body to rotate to the ready state and having good response capability and reliability.

[0042] The air bag pushing assembly can quickly fill gas, such as nitrogen, into the air bag. Alternatively, the air bag pushing assembly comprises a gas generator and an air bag, the gas generator is used for quickly generating gas by chemical reaction and inputting the gas into the air bag, and the air bag applies a pushing force to the energy absorption body after swelling. The air bag pushing assembly can also be realized by using the existing technology of the automobile safety air bag, and the size and shape of the air bag can be set according to the size, arrangement position, distance and other parameters of the energy absorption body 3.

[0043] In addition, the vehicle controller sends a control instruction to the air bag pushing assembly by logical calculation when the front-end collision is about to occur, and indicates the action of the air bag pushing assembly.

[0044] On the basis of the above technical scheme, the embodiment provides an implementation manner of the mounting seat 1, as shown in Figure 6 The mounting seat 1 is in a plate structure, one end of the mounting seat 1 is provided with a mounting gap 12, both sides of the mounting gap 12 are provided with mounting arms, and the mounting arms are provided with rotating shafts 11. The base 2 is correspondingly provided with shaft holes, the rotating shafts 11 are inserted into the shaft holes, and the rotation of the base 2 relative to the mounting seat 1 is realized. The mounting gap 12 provides the rotation space of the base 2.

[0045] On the basis of the above technical scheme, the embodiment provides an implementation manner of the base 2. As shown in Figure 8 and Figure 9 The base 2 comprises a top plate 21, a bottom plate 22 and a support column 23, and the support column 23 is connected between the top plate 21 and the bottom plate 22. The top plate 21 and the bottom plate 22 are rectangular plates or rounded rectangular plates, and the support column 23 is located at the four top corners of the top plate 21.

[0046] The top plate 21 is provided with a through hole 211, and the through hole 211 is located at the middle position of the top plate 21. The energy absorption body 3 is inserted into the through hole 211 and fixed in the through hole 211, for example, by means of interference fit.

[0047] One side of the bottom plate 22 is provided with an axle hole 221, and the rotating shaft 11 on the mounting base 1 can be inserted into the axle hole 221 to realize the rotation of the base 2 relative to the mounting base 1.

[0048] On the basis of the above technical solution, the embodiment provides an implementation of the locking assembly 6, as shown in the figure. Figure 7 The locking assembly 6 includes a buckle 61 and an elastic sheet 62. One end of the buckle 61 is rotationally arranged on the mounting base 1. Specifically, two connected ears 13 with holes are arranged on the mounting base 1, and the two sides of the end of the buckle 61 are respectively provided with protruding shafts which are inserted into the holes of the connected holes, so that the buckle 61 can rotate relative to the mounting base 1.

[0049] The other end of the buckle 61 extends to one side to form a clamping hook, and the top surface of the clamping hook is an arc surface. The clamping hook can be hooked on the bottom plate 22 of the base. The side provided with the clamping hook is set as the front surface, and the other side is set as the back surface. One end of the elastic sheet 62 is fixed to the mounting base 1, and the other end abuts against the back surface of the buckle 61.

[0050] The above locking process is as follows: the base 2 rotates towards the direction close to the mounting base 1 until the bottom plate 22 in the base 2 contacts the buckle 61 and exerts pressure on the clamping hook. Through the interaction with the arc top surface of the clamping hook, the pressure exerted by the bottom plate 22 on the clamping hook is converted into a force for promoting the rotation of the buckle 61 in the S direction. The buckle 61 rotates in the S direction and compresses the elastic sheet 62 to deform it. The buckle 61 continues to rotate until the bottom plate 22 breaks through the limit of the buckle 61 and moves to the lower side of the clamping hook, reaching the ready state. Under the action of the rebounding force of the elastic sheet 62, the buckle 61 rotates in the reverse direction of S and resets. The clamping hook is pressed on the surface of the bottom plate 22 to limit the bottom plate 22 from rotating in the reverse direction.

[0051] The above scheme realizes that when the energy-absorbing main body 3 and the base 2 rotate to the ready state, the locking assembly 6 locks the base 2 to keep the energy-absorbing main body 3 in the forward state, realizes the front impact, and prepares to exert the maximum energy-absorbing capacity in the impact process.

[0052] Further, the surface of the bottom plate 22 facing the top plate 21 is provided with a locking groove 222 for the clamping hook to be inserted into, which can limit the shaking of the buckle 61 and avoid the separation of the buckle 61 from the bottom plate 22, thereby ensuring that the energy-absorbing main body 3 keeps in the forward state. The surface of the bottom plate 22 away from the top plate 21 is provided with a guide groove 224, and the clamping hook can be embedded in the guide groove 224 to limit the shaking of the clamping hook, thereby improving the reliability of the locking assembly 6.

[0053] In the above scheme, the bottom plate 22 is a rectangular plate or a round-cornered rectangular plate, and the axle hole 221 and the locking groove 222 are respectively located at two opposite sides of the bottom plate 22. One side edge of the bottom plate 22 rotates relative to the mounting base 1, and the locking assembly 6 locks the opposite side edge of the bottom plate 22.

[0054] Regarding the energy absorption method of the energy-absorbing body 3, this embodiment also provides a specific solution. The energy-absorbing body 3 is made of aluminum alloy and is cylindrical. One end of it that is inserted into the top plate 21 is provided with multiple pre-made grooves, which extend along the length direction of the energy-absorbing body 3. There are multiple pre-made grooves, which are evenly distributed along the circumference of the energy-absorbing body 3.

[0055] like Figures 8 to 11 As shown, the inner side of the base plate 22 (the surface facing the top plate 21) is provided with a bulge 223, which arches towards the top plate 21, and the surface of the bulge 223 is an arc surface. When the front of the vehicle experiences a head-on impact, the energy-absorbing body 3 abuts against the surface of the bulge 223 and applies an axial thrust to the bulge 223. The component of the reaction force generated by the bulge 223 causes a radial thrust to be generated on the energy-absorbing body 3, causing the energy-absorbing body 3 to begin tearing along the pre-made grooves. As the energy-absorbing body 3 continues to move towards the base, the multiple pieces torn from the energy-absorbing body 3 bend, and the tearing process of the energy-absorbing body 3 absorbs the impact energy.

[0056] Furthermore, the outer peripheral surface of the energy-absorbing body 3 is provided with a plurality of energy-absorbing protrusions 31, which are arranged at intervals along the circumference and extend along the length direction of the energy-absorbing body 3. Correspondingly, a protruding planing blade 212 is provided on the outer surface of the top plate 21 (the surface opposite to the bottom plate 22), which is used to apply force to the energy-absorbing protrusions 31 and cut off the planing blade 212.

[0057] When the front of the vehicle is subjected to a head-on collision, the energy-absorbing body 3 moves toward the planing blade 212, and the planing blade 212 begins to cut the energy-absorbing protrusion 31, absorbing energy through the interaction between the planing blade 212 and the energy-absorbing protrusion 31.

[0058] Furthermore, the side of the planing blade 212 is a concave arc surface, and the energy-absorbing protrusion 31 curls along the outer surface of the planing blade 212 after being cut.

[0059] In the above scheme, the energy absorption effect is multiplied by the combined action of tearing energy absorption of the energy-absorbing body 3 and cutting energy absorption of the energy-absorbing protrusion 31.

[0060] The anti-climb energy-absorbing device provided by the above solution makes full use of the space at the end of the vehicle and folds under the driver's cab without protruding from the vehicle body fairing, saving space and not affecting the aerodynamic shape of the vehicle; when the vehicle is about to collide, it changes from a folded storage state to an extended ready state, and achieves anti-climb and energy absorption functions during the vehicle collision.

[0061] The air bag pushing assembly 5 quickly generates gas and makes the gas fill the air bag instantaneously, the operation speed is fast, the triggering is reliable, and the structure is simple and convenient for maintenance. Meanwhile, the space at the vehicle end is fully utilized, the rear space at the vehicle end is not occupied, the wind resistance is reduced, and the anti-climbing energy absorption effect is achieved when the vehicle is in an accident.

[0062] The embodiment realizes energy absorption through the two energy absorption modes of bulging tearing and cutting, has strong designability, and has stronger energy absorption effect.

[0063] Based on the above, when the vehicle is in a normal running state, the anti-climbing energy absorption device provided in the embodiment is in a storage state, the controller comprehensively processes the signal of detecting the obstacle in front of the vehicle by the front radar and the signal of the vehicle speed, when the speed is greater than the safe speed (such as the train coupling speed, 10km / h), and the front radar detects a large obstacle within the safe distance in front of the vehicle, the controller gives an output signal, the air bag pushing assembly acts, and the anti-climbing energy absorption device is converted from the storage state to the ready state to meet the collision. The specific logic process is as shown in Figure 12 .

[0064] On the basis of the above technical solution, the embodiment further provides a rail vehicle, which comprises the anti-climbing energy absorption device provided in any of the above contents. The rail vehicle provided in the embodiment has the same technical effect as the above anti-climbing energy absorption device.

[0065] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0066] In addition, the terms "first" and "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0067] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and the like, should be construed in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0069] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A crawl prevention energy absorbing device, characterized by, The application relates to an anti-climbing energy-absorbing device. The mounting base is used for being fixed to the front end of a vehicle; The mounting base is provided with a locking assembly; The base is rotationally connected with the mounting base; The locking assembly can lock the base when the base is rotated to a storage state; The energy-absorbing body is provided at one end of the base and can be synchronously rotated with the base to a storage state or a standby state; the energy-absorbing body extends along the width direction of the vehicle when in the storage state; the energy-absorbing body extends along the front-rear direction of the vehicle when in the standby state; The anti-climbing tooth is arranged at the other end of the energy-absorbing body; The airbag pushing assembly is arranged at the side of the energy-absorbing body in the storage state and is used for applying a pushing force to the energy-absorbing body to rotate the energy-absorbing body relative to the mounting base; The base comprises a top plate, a bottom plate and a support column connected between the top plate and the bottom plate; the top plate is provided with a through hole, and the energy-absorbing body is inserted and fixed in the through hole; One side of the mounting base is provided with a rotating shaft, and the bottom plate of the base is provided with a shaft hole for the rotating shaft to be inserted; The locking assembly comprises: The buckle is rotationally arranged at one end of the mounting base, and the front surface of the other end is provided with a clamping hook which can be hooked on the bottom plate of the base; The elastic sheet is fixed at one end of the mounting base and abuts against the back surface of the buckle at the other end.

2. Anti -creep energy absorption device according to claim 1, characterized in that The airbag pushing assembly comprises a gas generator and an airbag; the gas generator is used for generating gas and inputting the gas to the airbag; the airbag applies a pushing force to the energy-absorbing body after being inflated.

3. The anti -creep energy absorbing device of claim 1, wherein The bottom plate is provided with a locking groove for the clamping hook to be inserted.

4. A crawl prevention energy absorbing device according to claim 3, wherein The bottom plate is a rectangular plate; the shaft hole and the locking groove are respectively located at two opposite sides of the bottom plate.

5. The anti-creep energy absorbing device of claim 1, wherein The end of the energy-absorbing body inserted into the top plate is provided with a pre-marked notch which extends along the length direction of the energy-absorbing body; The inner side surface of the bottom plate is provided with a bulging part which is arched towards the top plate; the surface of the bulging part is a circular arc surface; the bulging part is used for applying a force to the energy-absorbing body to tear the energy-absorbing body along the pre-marked notch.

6. The anti-creep energy absorbing device of claim 1, wherein The outer circumferential surface of the energy-absorbing body is provided with a plurality of energy-absorbing protrusions which are arranged at intervals in the circumferential direction and extend along the length direction of the energy-absorbing body; The outer surface of the top plate is provided with a protruding planing blade which is used for applying a force to the energy-absorbing protrusions and absorbing energy through the interaction between the planing blade and the energy-absorbing protrusions.

7. A rail vehicle, characterized by The application further relates to an anti-climbing energy-absorbing device as claimed in any one of claims 1-6. ​

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