Anti-creep energy absorption structure and rail vehicle

Abstract

The application provides a kind of anti-climbing energy absorption structure and rail vehicle, including energy absorption shell, several energy absorption blocks, anti-climbing assembly, energy absorption shell is set below the driver's room floor, several energy absorption blocks are spaced along the front and rear direction in energy absorption shell, anti-climbing assembly extends to the front side of energy absorption shell through energy absorption shell and energy absorption block.The anti-climbing energy absorption structure provided by the application installs anti-climbing assembly and energy absorption block to the bottom of driver's room underframe, not only realizes the effective weight reduction of structure, saves the occupied space of structure, but also realizes the double functions of energy absorption and anti-climbing, meets the collision conditions of vehicle, and effectively prevents the climbing of vehicle during collision, improves the safety of vehicle operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-climbing energy absorption, and more specifically, relates to an anti-climbing energy absorption structure and a rail vehicle. Background Art

[0002] Passive safety and driver and passenger protection are key research areas in the transportation industry. Rail transit vehicles, both domestically and internationally, utilize independent energy-absorbing structures for passive safety. These independent anti-climbing structures are bolted to the vehicle body. Energy absorption methods include metal planing, metal expansion, and honeycomb structures.

[0003] Since independent energy-absorbing devices require a large space and an independent mounting structure for installation, they pose great challenges to the vehicle's front-end space layout, equipment installation, and vehicle lightweighting, making it difficult to meet the needs of vehicle integration and lightweighting. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-climbing energy absorption structure and a rail vehicle, which integrates the anti-climbing energy absorption structure into the driver's room outer cover and forms a passive safety energy absorption system with other energy absorption structures such as couplers, thereby meeting the collision conditions of vehicles at different speed levels, effectively reducing the weight of the vehicle, and saving the installation space of the vehicle.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an anti-climbing energy absorption structure, including an energy absorbing shell, a plurality of energy absorbing blocks, and an anti-climbing assembly. The energy absorbing shell is arranged under the floor of the driver's cab, and a plurality of energy absorbing blocks are arranged in the energy absorbing shell at intervals along the front and rear directions. The anti-climbing assembly passes through the energy absorbing shell and the energy absorbing blocks and extends to the front side of the energy absorbing shell.

[0006] In a possible implementation, the horizontal projection of the energy absorbing block is a trapezoid, and the areas of the horizontal projections of the energy absorbing blocks gradually increase from the front end to the rear end of the vehicle body.

[0007] In one possible implementation, the anti-climbing assembly includes several slidingly connected telescopic rods, and the front end of the telescopic rod located at the front end is provided with anti-climbing teeth, which extend along the width direction of the vehicle. The front end surface of the anti-climbing teeth is provided with several meshing teeth extending in the horizontal direction, and the meshing teeth are spaced apart in the up and down directions, and the anti-climbing teeth are spaced apart from the front end surface of the energy absorption shell.

[0008] In one possible implementation, the energy absorbing shell includes a side shell and a rear bottom plate. The side shell is connected to the inner wall of the driver's room outer cover. The side shell has a side opening facing the outside of the vehicle body and a rear opening facing the rear side of the vehicle body. The side shell is used to accommodate a plurality of the energy absorbing blocks. The rear bottom plate is mounted on the outside of the rear end of the side shell. The rear end of the anti-climbing component is connected to the inner wall of the rear bottom plate. The anti-climbing component is arranged from back to front through a plurality of the energy absorbing blocks and the front end surface of the side shell.

[0009] In one possible implementation, there are three energy absorbing blocks, namely the first energy absorbing block, the second energy absorbing block and the third energy absorbing block. The first energy absorbing block, the second energy absorbing block and the third energy absorbing block are arranged sequentially from front to back, and the anti-climbing component is arranged sequentially from back to front through the third energy absorbing block, the second energy absorbing block and the first energy absorbing block.

[0010] In a possible implementation, a first partition plate and a second partition plate are provided in the energy absorbing shell. The first partition plate is located between the first energy absorbing block and the second energy absorbing block, and the second partition plate is located between the second energy absorbing block and the third energy absorbing block.

[0011] In some embodiments, the energy absorbing shell is made of fiberglass, and the first partition plate and the second partition plate are made of metal.

[0012] In one possible implementation, the first energy absorbing block, the second energy absorbing block and the third energy absorbing block have multiple spaced cavities therein, the single cavity of the first energy absorbing block is larger than the single cavity of the second energy absorbing block, and the single air cavity of the second energy absorbing block is larger than the single cavity of the third energy absorbing block.

[0013] In a possible implementation, the cross-sections of the cavities of the first energy absorbing block and the second energy absorbing block are quadrilaterals, and the cross-section of the cavity of the third energy absorbing block is hexagonal.

[0014] Compared with the prior art, the solution shown in the embodiment of the present application provides an anti-climbing energy absorption structure in which the anti-climbing components and energy absorption blocks are uniformly installed under the chassis of the driver's cab, which not only effectively reduces the weight of the structure and saves the space occupied by the structure, but also realizes the dual functions of energy absorption and anti-climbing, meeting the vehicle's collision conditions. At the same time, it can effectively prevent the vehicle from climbing during the collision process, thereby improving the safety of vehicle operation.

[0015] The present invention also provides a rail vehicle comprising an anti-climbing energy absorption structure. The anti-climbing energy absorption structure of the vehicle comprises an anti-climbing assembly and an energy absorption block mounted uniformly below the driver's cab chassis. This not only effectively reduces the weight of the structure and saves space, but also achieves the dual functions of energy absorption and anti-climbing, meeting the vehicle's collision conditions. It can also effectively prevent the vehicle from climbing during a collision, thereby improving the safety of vehicle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of the anti-climbing energy absorption structure in use provided by an embodiment of the present invention;

[0018] Figure 2 For the embodiment of the present invention Figure 1 Schematic diagram of the partially enlarged structure of middle Ⅰ;

[0019] Figure 3 A schematic structural diagram of an anti-climbing energy absorption structure provided by an embodiment of the present invention;

[0020] Figure 4 For the embodiment of the present invention Figure 3 The schematic diagram of the structure of the middle anti-climbing energy absorption structure omitting the rear bottom plate and energy absorption blocks;

[0021] Figure 5 For the embodiment of the present invention Figure 3 Schematic diagram of the structure of the middle and rear floor and anti-climbing components;

[0022] Figure 6 A schematic top-down cross-sectional view of the anti-climbing energy absorption structure provided in an embodiment of the present invention.

[0023] Among them, the reference numerals in the figures are:

[0024] 1. Energy-absorbing shell; 11. Side shell; 12. Rear bottom plate; 13. First partition; 14. Second partition; 15. Connecting flange; 21. First energy-absorbing block; 22. Second energy-absorbing block; 23. Third energy-absorbing block; 3. Anti-climbing assembly; 31. Telescopic rod; 32. Anti-climbing teeth; 33. Engaging teeth; 4. Driver's room exterior cover. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0027] Please also refer to Figures 1 to 6 The anti-climbing energy absorption structure and rail vehicle provided by the present invention are now described. The anti-climbing energy absorption structure comprises an energy absorbing shell 1, a plurality of energy absorbing blocks, and an anti-climbing assembly 3. The energy absorbing shell 1 is disposed below the driver's cab floor, and the plurality of energy absorbing blocks are spaced apart within the energy absorbing shell 1 along the front-to-back direction. The anti-climbing assembly 3 extends through the energy absorbing shell 1 and the energy absorbing blocks to the front side of the energy absorbing shell 1.

[0028] Compared with the prior art, the anti-climbing energy absorption structure provided in this embodiment installs the anti-climbing component 3 and the energy absorbing block uniformly under the chassis of the driver's cab, which not only achieves effective weight reduction of the structure and saves the space occupied by the structure, but also realizes the dual functions of energy absorption and anti-climbing, meets the vehicle's collision conditions, and can effectively prevent the vehicle from climbing during the collision process, thereby improving the safety of vehicle operation.

[0029] In this embodiment, two anti-climbing energy-absorbing structures are symmetrically positioned below the driver's cab floor, one adjacent to each side wall of the vehicle. These structures prevent the vehicle from climbing during a collision and effectively absorb collision energy. This arrangement is intended to enhance vehicle safety, particularly damage from accidental collisions. The anti-climbing assembly 3 effectively prevents relative climbing and, in conjunction with the energy-absorbing blocks, absorbs some of the impact energy, minimizing the impact of an accidental collision on the passenger compartment and enhancing passenger safety.

[0030] The anti-climbing component 3 is set through the energy absorbing block, and the combination of the two can achieve the dual functions of anti-climbing and energy absorption. The above combined structure can effectively save installation space, facilitate the improvement of subsequent assembly efficiency, and ensure the safety of vehicle operation.

[0031] In some possible implementations, the above-mentioned characteristic energy absorbing shell 1 adopts the following Figures 1 to 6 Please also refer to Figures 1 to 6 The horizontal projection of the energy-absorbing block is a trapezoid, and the area of ​​the horizontal projection of several energy-absorbing blocks gradually increases from the front end to the rear end of the vehicle body.

[0032] In this embodiment, the horizontal projection of the energy-absorbing block is a trapezoid, the length of the front side of the energy-absorbing block is smaller than the length of the rear side, and the horizontal projection area of ​​the multiple energy-absorbing blocks gradually increases from front to back, so that the multiple energy-absorbing blocks form an enhanced energy absorption effect from front to back, forming a cumulative energy absorption effect, which effectively attenuates the impact force during the vehicle collision and reduces the impact energy.

[0033] In some possible implementations, the above-mentioned characteristic anti-climbing component 3 adopts the following method: Figures 1 to 6 Please also refer to Figures 1 to 6 The anti-climbing assembly 3 includes several slidingly connected telescopic rods 31. The front end of the telescopic rod 31 is provided with anti-climbing teeth 32. The anti-climbing teeth 32 extend along the width direction of the vehicle. The front end surface of the anti-climbing teeth 32 is provided with several meshing teeth 33 extending in the horizontal direction. The meshing teeth 33 are arranged at intervals in the up and down directions. The anti-climbing teeth 32 are spaced apart from the front end surface of the energy absorbing shell 1.

[0034] In this embodiment, the anti-climbing assembly 3 adopts a structure combining multiple telescopic rods 31 and anti-climbing teeth 32. The multiple sliding telescopic rods 31 can achieve free expansion and contraction in the front-to-back direction of the vehicle body without generating resistance force.

[0035] During a vehicle collision, the impact is first reduced by the coupling. The anti-climbing teeth 32 on the front side of the vehicle then engage with the anti-climbing teeth 32 on the rear end of the vehicle being rear-ended. If the vehicle tends to climb, the meshing of the front and rear anti-climbing teeth 32 causes the telescopic rod 31 to generate vertical resistance, preventing the vehicle from climbing while simultaneously absorbing longitudinal energy. During this process, the telescopic rod 31 can freely extend and retract without generating resistance until the rear end of the anti-climbing teeth 32 presses against the energy absorbing shell 1, causing it to deform and sequentially act on multiple energy absorbing blocks, creating a step-by-step energy absorption effect. This process achieves both anti-climbing and energy absorption functions.

[0036] The meshing teeth 33 provided on the front end surface of the anti-climbing teeth 32 extend in the horizontal direction, forming an inner concave structure between two adjacent meshing teeth 33, so that a meshing effect is formed between the two anti-climbing teeth 32, achieving a longitudinal energy absorption effect, and realizing the anti-climbing performance of the vehicle.

[0037] In some possible implementations, the above-mentioned characteristic energy absorbing shell 1 adopts the following Figures 1 to 6 Please also refer to Figures 1 to 6The energy absorbing shell 1 includes a side shell 11 and a rear bottom plate 12. The side shell 11 is connected to the inner wall of the driver's room outer cover 4. The side shell 11 has a side opening facing the outside of the vehicle body and a rear opening facing the rear side of the vehicle body. The side shell 11 is used to accommodate a plurality of the energy absorbing blocks. The rear bottom plate 12 is sleeved on the outside of the rear end of the side shell 11. The rear end of the anti-climbing component 3 is connected to the inner wall of the rear bottom plate 12. The anti-climbing component 3 is arranged from back to front through a plurality of the energy absorbing blocks and the front end surface of the side shell 11.

[0038] In this embodiment, the energy absorbing shell 1 is in the form of a combination of a side shell 11 and a rear bottom plate 12. The side opening of the side shell 11 faces the outside of the vehicle body. The side shell 11 can be connected to the inner wall of the driver's room outer cover 4 to form a cavity for accommodating the energy absorbing block. The rear side of the side shell 11 is used to install the rear bottom plate 12 to fix the rear end of the anti-climbing component 3.

[0039] Multiple energy-absorbing blocks are installed within the aforementioned cavity. The rear floor plate 12 not only secures the rear end of the anti-climbing assembly 3 but also seals the rear opening of the side shell 11, ensuring the overall integrity of the energy-absorbing shell 1 and effectively accommodating the multiple energy-absorbing blocks. This facilitates the installation of different numbers of energy-absorbing blocks as needed to meet the performance requirements of vehicles at different speed levels.

[0040] Furthermore, an outwardly bent connecting flange 15 is provided at the edge of the side shell 11 . The connecting flange 15 is connected to the inner wall of the cab outer cover 4 , thereby improving the reliability of the installation of the side shell 11 .

[0041] In some possible implementations, the above characteristic energy absorbing block adopts Figures 1 to 6 Please also refer to Figures 1 to 6 There are three energy absorbing blocks, which are the first energy absorbing block 21, the second energy absorbing block 22 and the third energy absorbing block 23. The first energy absorbing block 21, the second energy absorbing block 22 and the third energy absorbing block 23 are arranged sequentially from front to back, and the anti-climbing component 3 is arranged from back to front through the third energy absorbing block 23, the second energy absorbing block 22 and the first energy absorbing block 21.

[0042] In this embodiment, based on the energy absorption requirements of a vehicle collision, the energy absorbing blocks utilize a structure that combines first, second, and third energy absorbing blocks 21, 22, and 23 to achieve a step-by-step energy absorption effect. The impedance of the second energy absorbing block 22 is greater than that of the first energy absorbing block 21, and the impedance of the third energy absorbing block 23 is greater than that of the second energy absorbing block 22. This creates a gradually increasing impedance from front to back, ensuring a step-by-step energy absorption effect.

[0043] On this basis, the anti-climbing assembly 3 is sequentially arranged from back to front through the third energy absorbing block 23, the second energy absorbing block 22, and the first energy absorbing block 21, ensuring energy absorption and anti-climbing effects. This arrangement facilitates spatial layout, helps save installation space within the vehicle, and also reduces the overall weight of the structure, meeting the lightweight design requirements of the vehicle.

[0044] In some embodiments, the above-mentioned energy absorbing shell 1 can be used as follows Figures 1 to 6 Please also refer to Figures 1 to 6 A first partition plate 13 and a second partition plate 14 are provided in the energy absorbing shell 1 . The first partition plate 13 is located between the first energy absorbing block 21 and the second energy absorbing block 22 . The second partition plate 14 is located between the second energy absorbing block 22 and the third energy absorbing block 23 .

[0045] In this embodiment, a first partition 13 and a second partition 14 are provided within the energy absorbing shell 1. The first partition 13 separates the first energy absorbing block 21 from the second energy absorbing block 22, while the second partition 14 separates the second energy absorbing block 22 from the third energy absorbing block 23. When the energy absorbing shell 1 is pressed against the rear end surface of the anti-climbing teeth 32, it deforms, and the impact force is sequentially transmitted to the multiple energy absorbing blocks, resulting in a step-by-step energy absorption effect.

[0046] Specifically, the first and second baffles 13, 14 are constructed of metal, effectively separating adjacent energy-absorbing blocks and enabling progressive energy absorption by multiple blocks. During longitudinal energy absorption, the first and second baffles 13, 14 provide stable resistance to energy-absorbing blocks of varying force levels, gradually increasing resistance from front to back, ensuring effective energy absorption and enhancing vehicle safety.

[0047] In some embodiments, the above-mentioned energy absorbing shell 1 can be used as follows Figures 1 to 6 Please also refer to Figures 1 to 6 The energy absorbing shell 1 is made of fiberglass, and the first and second partitions 13 and 14 are made of metal. The energy absorbing shell 1 is made of fiberglass, which has high structural strength, meets the installation stability of the energy absorbing block and the anti-climbing component 3, and realizes a lightweight design of the structure.

[0048] In some possible implementations, the first energy absorbing block 21, the second energy absorbing block 22 and the third energy absorbing block 23 are as follows: Figures 1 to 6 Please also refer to Figures 1 to 6 The first energy absorbing block 21, the second energy absorbing block 22 and the third energy absorbing block 23 have multiple cavities arranged at intervals. The single cavity of the first energy absorbing block 21 is larger than the single cavity of the second energy absorbing block 22, and the single air cavity of the second energy absorbing block 22 is larger than the single cavity of the third energy absorbing block 23.

[0049] In this embodiment, the energy absorption function of the aforementioned components is achieved by providing multiple cavities within each of the first energy absorbing block 21, the second energy absorbing block 22, and the third energy absorbing block 23. The individual cavities of the second energy absorbing block 22 are smaller than those of the first energy absorbing block 21, resulting in a greater energy absorption effect for the second energy absorbing block 22 than for the first energy absorbing block 21. This creates a progressively stronger energy absorption effect from front to back, ensuring sequential operation of the energy absorbing structure and ensuring energy absorption stability.

[0050] Similarly, the single cavity of the second energy absorbing block 22 is smaller than the single cavity of the third energy absorbing block 23 , so that the energy absorption effect of the first energy absorbing block 21 , the second energy absorbing block 22 and the third energy absorbing block 23 gradually increases from front to back.

[0051] On this basis, the cross-section of the cavity of the first energy absorbing block 21 and the second energy absorbing block 22 is a quadrilateral, and the cross-section of the cavity of the third energy absorbing block 23 is a hexagon, which is approximately a honeycomb structure. The third energy absorbing block 23 has a better energy absorption effect than the quadrilateral cavity cross-section of the first energy absorbing block 21 and the second energy absorbing block 22, thereby achieving a step-by-step improvement in the energy absorption effect.

[0052] By adjusting the cross-sectional shapes of the energy-absorbing blocks at different energy absorption levels, the blocks are configured to have varying levels of resistance, thereby adapting to the energy absorption requirements of vehicle collisions at different speeds. The third energy-absorbing block 23, with the highest resistance, is placed behind the second energy-absorbing block 22, which has a moderate resistance. The second energy-absorbing block 22, which has a moderate resistance, is placed behind the first energy-absorbing block 21, which has the lowest resistance. This ensures that the third energy-absorbing block 23 provides sufficient resistance for the second energy-absorbing block 22, and the second energy-absorbing block 22 provides sufficient resistance for the first energy-absorbing block 21. This ensures that the energy-absorbing structure operates sequentially and ensures stable energy absorption.

[0053] Based on the same inventive concept, embodiments of the present application also provide a rail vehicle including an anti-climbing energy absorption structure. The anti-climbing energy absorption structure of the aforementioned vehicle integrates the anti-climbing assembly 3 and the energy absorbing block under the driver's cab chassis, effectively reducing the weight and space occupied by the structure. Furthermore, the structure achieves dual energy absorption and anti-climbing functions, meeting collision conditions at different vehicle speed levels. Furthermore, the structure effectively prevents the vehicle from climbing during a collision, thereby improving vehicle operation safety.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Anti-climbing energy absorption structure, characterized in that: The invention comprises an energy absorbing shell (1), a plurality of energy absorbing blocks, and an anti-climbing assembly (3); the energy absorbing shell (1) is arranged below the floor of the driver's cab; the plurality of energy absorbing blocks are arranged in the energy absorbing shell (1) at intervals along the front-to-back direction; and the anti-climbing assembly (3) penetrates the energy absorbing shell (1) and the energy absorbing blocks and extends to the front side of the energy absorbing shell (1); The anti-climbing assembly (3) comprises a plurality of slidingly connected telescopic rods (31), the front end of the telescopic rod (31) being provided with an anti-climbing tooth (32), the anti-climbing tooth (32) extending in the width direction of the vehicle, the front end surface of the anti-climbing tooth (32) being provided with a plurality of meshing teeth (33) extending in the horizontal direction, the meshing teeth (33) being arranged at intervals in the vertical direction, and the anti-climbing tooth (32) being arranged at intervals from the front end surface of the energy absorbing shell (1); The energy absorbing shell (1) includes a side shell (11) and a rear bottom plate (12). The side shell (11) is connected to the inner wall of the driver's room outer cover (4). The side shell (11) has a side opening facing the outer side of the vehicle body and a rear opening facing the rear side of the vehicle body. The side shell (11) is used to accommodate a plurality of the energy absorbing blocks. The rear bottom plate (12) is sleeved on the outer side of the rear end of the side shell (11). The rear end of the anti-climbing component (3) is connected to the inner wall of the rear bottom plate (12). The anti-climbing component (3) is arranged to penetrate the plurality of the energy absorbing blocks and the front end surface of the side shell (11) from back to front.

2. The anti-climbing energy absorption structure according to claim 1, characterized in that: The horizontal projection of the energy absorbing blocks is trapezoidal, and the areas of the horizontal projections of a plurality of the energy absorbing blocks gradually increase from the front end to the rear end of the vehicle body.

3. The anti-climbing energy absorption structure according to any one of claims 1 to 2, characterized in that: The energy absorbing blocks are provided with three, and the three energy absorbing blocks are respectively a first energy absorbing block (21), a second energy absorbing block (22) and a third energy absorbing block (23). The first energy absorbing block (21), the second energy absorbing block (22) and the third energy absorbing block (23) are arranged in sequence from front to back, and the anti-climbing component (3) is arranged to pass through the third energy absorbing block (23), the second energy absorbing block (22) and the first energy absorbing block (21) in sequence from back to front.

4. The anti-climbing energy absorption structure according to claim 3, characterized in that: A first partition plate (13) and a second partition plate (14) are provided in the energy absorbing shell (1); the first partition plate (13) is located between the first energy absorbing block (21) and the second energy absorbing block (22); and the second partition plate (14) is located between the second energy absorbing block (22) and the third energy absorbing block (23).

5. The anti-climbing energy absorption structure according to claim 4, characterized in that: The energy absorbing shell (1) is a glass fiber reinforced plastic component, and the first partition plate (13) and the second partition plate (14) are metal components.

6. The anti-climbing energy absorption structure according to claim 3, characterized in that: The first energy absorbing block (21), the second energy absorbing block (22) and the third energy absorbing block (23) have a plurality of cavities arranged at intervals, a single cavity of the first energy absorbing block (21) is larger than a single cavity of the second energy absorbing block (22), and a single cavity of the second energy absorbing block (22) is larger than a single cavity of the third energy absorbing block (23).

7. The anti-climbing energy absorption structure according to claim 3, characterized in that: The cross-sections of the cavities of the first energy absorbing block (21) and the second energy absorbing block (22) are quadrilaterals, and the cross-section of the cavity of the third energy absorbing block (23) is hexagonal.

8. A rail vehicle, characterized in that The rail vehicle comprises the anti-climbing energy absorption structure according to any one of claims 1 to 7.

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