Anti-creeping energy-absorbing device based on outward rolling tearing and crushing mechanism

Abstract

The invention discloses an anti-creeping energy-absorbing device based on an outward rolling tearing and crushing mechanism, the anti-creeping energy-absorbing device comprises an external energy-absorbing pipe, a mounting seat, anti-creeping teeth, a connecting plate and an internal energy-absorbing assembly, the external energy-absorbing pipe comprises a plurality of energy-absorbing walls, and each energy-absorbing wall extends along a first direction; the installation base is fixed to the first end of the external energy absorption pipe. The anti-creeping teeth are fixed to the second end of the external energy absorption pipe through a connecting plate. The connecting plate comprises a guide part close to the external energy absorption pipe, and the guide part is configured to force the edges at the second end of the external energy absorption pipe to be torn, so that the energy absorption walls at the second end of the external energy absorption pipe are separated; the internal energy absorption assembly is arranged in the external energy absorption pipe and absorbs energy in a crushing mode. According to the anti-creeping energy-absorbing device, an energy-absorbing mode of outward rolling and tearing is innovatively provided, and in cooperation with crushing energy-absorbing, the energy-absorbing component can be orderly deformed in the energy-absorbing stage, and the reliability of the whole anti-creeping energy-absorbing device in the energy-absorbing process is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-climbing devices, and in particular to an anti-climbing energy absorption device based on an outward rolling tearing and crushing mechanism. Background Art

[0002] The contents in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] An anti-climber, also known as an anti-climber energy absorption device, is a mechanical device widely used in the field of rail transportation to prevent rail vehicles from climbing and to buffer and absorb energy.

[0004] Known anti-climbers can generally be categorized by their energy absorption mechanism into cutting, crushing, expansion, and combination types. Combination anti-climbers are a combination of cutting, crushing, and expansion types. While combination anti-climbers can provide better energy absorption under certain conditions, the energy-absorbing components of known combination anti-climbers struggle to deform in an orderly manner during the energy absorption phase, resulting in poor reliability. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an anti-climbing energy absorption device, which innovatively proposes an outward rolling and tearing energy absorption method. On this basis, combined with the crushing energy absorption, the energy absorption components can be deformed in an orderly manner during the energy absorption stage, thereby improving the reliability of the entire anti-climbing energy absorption device during the energy absorption stage, thereby providing a more powerful and reliable guarantee for the safe operation of rail vehicles.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] The present invention discloses an anti-climbing energy absorption device based on an outward rolling tearing and crushing mechanism, comprising:

[0008] an external energy absorbing tube having a first end and a second end opposite to each other in a first direction; the external energy absorbing tube comprising a plurality of energy absorbing walls sequentially arranged along the circumference of the external energy absorbing tube, each of the energy absorbing walls extending along the first direction;

[0009] a mounting base fixed to the first end of the external energy absorbing tube;

[0010] An anti-climbing tooth is fixed to the second end of the external energy absorbing tube through a connecting plate; the connecting plate includes a guide portion close to the external energy absorbing tube, the first end of the guide portion is connected to the second end of the external energy absorbing tube; the outer diameter of the guide portion gradually increases from the first end to the second end of the guide portion; the guide portion is configured to force the edges at the second end of the external energy absorbing tube to tear, so that the energy absorbing walls at the second end of the external energy absorbing tube are separated; and,

[0011] An internal energy absorbing component is arranged inside the external energy absorbing tube; the internal energy absorbing component is configured to absorb energy by crushing when the anti-climbing tooth is subjected to a longitudinal impact and moves along the first direction toward the direction of the mounting seat.

[0012] Optionally, the anti-climbing energy absorption device based on the outward tearing and crushing mechanism further includes a guide mechanism corresponding one-to-one to the energy absorption wall, and the guide mechanism includes:

[0013] A guide rod extending along the first direction and parallel to the corresponding energy absorbing wall;

[0014] A guide block is provided at one end of the guide rod and close to the second end of the external energy absorbing tube; the other end of the guide rod passes through the mounting seat and is slidably engaged with the mounting seat; and

[0015] a first elastic member, one end of the first elastic member being connected to the mounting seat, and the other end of the first elastic member being connected to the guide block;

[0016] Wherein, a first guide groove is provided on a side of the guide block facing the connecting plate, and a second guide groove corresponding to the first guide groove is provided on a side of the connecting plate facing the guide block.

[0017] Optionally, from the mounting seat to the guide block, the guide rod includes a first constant diameter section, a variable diameter section, and a second constant diameter section connected in sequence;

[0018] One end of the first constant diameter section away from the variable diameter section passes through the mounting seat and is slidably engaged with the mounting seat, and the guide block is provided at one end of the second constant diameter section away from the variable diameter section;

[0019] The outer diameter of the first constant diameter section is smaller than that of the second constant diameter section; and the outer diameter of the variable diameter section gradually increases from the first constant diameter section to the second constant diameter section;

[0020] The guide mechanism further includes a cutting knife disposed on the mounting seat, and the cutting knife is configured to cut the variable diameter section and the second constant diameter section when the guide rod moves along the first direction away from the connecting plate.

[0021] Optionally, the guide mechanism further includes a second elastic member;

[0022] One end of the second elastic member is connected to the mounting seat; the other end of the second elastic member extends along the first direction toward the guide block and stops at the connection between the variable diameter section and the second constant diameter section.

[0023] Optionally, the first elastic member and the second elastic member are coaxially arranged, and the second elastic member is sleeved on the outside of the first elastic member.

[0024] Optionally, an induction groove is provided on the outer wall of each energy absorbing wall near the second end of the external energy absorbing tube.

[0025] Optionally, the internal energy absorbing component includes:

[0026] an internal energy absorbing tube, one end of which is connected to the mounting seat, and the other end of which is connected to the connecting plate; and

[0027] The honeycomb body is filled in the interior of the outer energy absorbing tube and is located on the periphery of the inner energy absorbing tube.

[0028] Optionally, the internal energy absorbing assembly further comprises a plurality of baffles, which are sequentially arranged at intervals along the first direction inside the external energy absorbing tube to divide the interior of the external energy absorbing tube into a plurality of chambers; an end of the internal energy absorbing tube away from the mounting seat sequentially passes through the plurality of baffles and is connected to the connecting plate;

[0029] Among the plurality of chambers, except the chamber close to the second end of the outer energy absorbing tube, a honeycomb body is provided in each of the remaining chambers.

[0030] Optionally, the chambers in which the honeycomb bodies are placed are divided into a plurality of groups along the first direction;

[0031] The yield strength of the honeycomb bodies arranged in the plurality of groups of the chambers gradually increases from the connecting plate to the mounting seat.

[0032] Optionally, the anti-climbing energy absorption device based on the outward rolling tearing and crushing mechanism further includes a guide member;

[0033] The guide member is coaxially arranged inside the internal energy absorbing tube; one end of the guide member is connected to the connecting plate, and the other end of the guide member passes through the mounting seat and is slidably matched with the mounting seat.

[0034] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0035] 1. The anti-climbing energy absorption device disclosed in the present invention not only innovatively proposes an external rolling and tearing energy absorption method, but also, on this basis, cooperates with the crushing energy absorption method to make the external energy absorption tube and the internal energy absorption tube and other energy absorption components deform in an orderly manner during the energy absorption stage, thereby effectively improving the reliability of the entire anti-climbing energy absorption device during the energy absorption process.

[0036] 2. The anti-climbing energy-absorbing device disclosed in the present invention can guide the energy-absorbing walls to roll outward in an orderly manner along a first direction by providing a guide mechanism corresponding one-to-one to each energy-absorbing wall of the external energy-absorbing tube, thereby facilitating the stability of the anti-climbing energy-absorbing device during the energy-absorbing process. In addition, by providing components such as cutting knives and elastic parts in the guide mechanism, the guide mechanism can not only perform a guiding function but also perform cutting energy absorption and elastic compression energy absorption, so that the entire anti-climbing energy-absorbing device can at least provide multiple energy absorption methods such as rolling tearing, crushing, cutting, and elastic compression, ensuring that the anti-climbing energy-absorbing device can effectively absorb energy in different collision stages, effectively improving the energy absorption effect of the anti-climbing energy-absorbing device, and ensuring the energy absorption reliability of the anti-climbing energy-absorbing device in various collision scenarios, thereby helping to provide a more powerful and reliable guarantee for the safe operation of rail vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic structural diagram of an anti-climbing energy absorption device provided in an embodiment of the present invention;

[0038] Figure 2 for Figure 1 Schematic diagram of the internal structure of the anti-climbing energy absorption device shown in;

[0039] Figure 3 for Figure 1 A side sectional view of the anti-climbing energy absorption device shown in FIG;

[0040] Figure 4 A schematic structural diagram of a guide mechanism provided in an embodiment of the present invention;

[0041] Figure 5 for Figure 2 A magnified view of the local structure at point A;

[0042] Figure 6 For the general Figure 1 The reference diagram of the actual application of the anti-climbing energy absorption device shown shows the situation when the energy absorption walls of the external energy absorption tube are rolled outward and torn at the initial stage of the collision.

[0043] Icons: 10-external energy absorbing tube, 11-energy absorbing wall, 111-induction groove, 12-chamber, 20-anti-climbing teeth, 30-connecting plate, 31-guide part, 40-mounting seat, 50-internal energy absorbing assembly, 51-internal energy absorbing tube, 52-honeycomb body, 53-partition, 60-guide member, 70-guide mechanism, 71-guide rod, 711-first constant diameter section, 712-variable diameter section, 713-second constant diameter section, 72-guide block, 73-first elastic member, 74-first guide groove, 75-second guide groove, 76-cutting blade, 77-second elastic member. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific implementation methods. The same figure marks in the accompanying drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, additional components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0046] An embodiment of the present invention discloses an anti-climbing energy absorption device, in particular an anti-climbing energy absorption device based on an outward rolling tearing and crushing mechanism. Figure 1 A schematic structural diagram of an exemplary anti-climbing energy absorption device disclosed in an embodiment of the present invention; Figure 2 for Figure 1 The internal structure diagram of the anti-climbing energy absorption device is shown in FIG. Figure 3 for Figure 1 A side sectional view of the anti-climbing energy absorption device shown in FIG.

[0047] exist Figures 1 to 3 In the illustrated embodiment, the anti-climbing energy absorbing device may include an external energy absorbing tube 10 , anti-climbing teeth 20 , a connecting plate 30 , a mounting seat 40 and an internal energy absorbing assembly 50 .

[0048] The external energy absorbing tube 10, the anti-climbing teeth 20 and the mounting base 40 can be coaxially arranged along the first direction. Figure 1 or Figure 2 The X-axis direction shown in .

[0049] Specifically, the external energy absorbing tube 10 may have two opposing ends in a first direction, namely a first end and a second end of the external energy absorbing tube 10. A mounting base 40 may be secured to the first end of the external energy absorbing tube 10, thereby facilitating the entire anti-climbing energy absorbing device being secured to a rail vehicle for use. The anti-climbing teeth 20 may be secured to the second end of the external energy absorbing tube 10 via a connecting plate 30, so that in the event of a rail vehicle collision, the anti-climbing teeth 20 can absorb the collision energy.

[0050] The external energy-absorbing tube 10 is primarily used to absorb collision energy by rolling and tearing when the anti-climbing teeth 20 receive it, thereby dissipating the collision energy. The external energy-absorbing tube 10 includes a plurality of energy-absorbing walls 11 arranged sequentially along the circumference of the external energy-absorbing tube 10. These energy-absorbing walls 11 enclose the tubular external energy-absorbing tube 10. Furthermore, each energy-absorbing wall 11 extends along a first direction, enabling each energy-absorbing wall 11 to roll and tear along the first direction.

[0051] For example, refer to Figure 3 As shown, the external energy absorbing tube 10 can be a square tube including four energy absorbing walls 11, which are the top wall, bottom wall, and two opposing side walls of the external energy absorbing tube 10. Furthermore, the external energy absorbing tube 10 can be formed using a bending process, and the weld seam after bending is not located at the junction of any two adjacent energy absorbing walls 11, that is, not at any edge of the external energy absorbing tube 10, so that each energy absorbing wall 11 can be more smoothly rolled outward in the first direction.

[0052] The outward rolling of each energy absorbing wall 11 of the external energy absorbing tube 10 along the first direction is achieved based on the connecting plate 30 .

[0053] Specifically, refer to Figure 2 and Figure 5 As shown, the connecting plate 30 includes a guide portion 31 close to the external energy absorbing tube 10, and the guide portion 31 also includes a first end and a second end opposite to each other in the first direction. The first end of the guide portion 31 can be connected to the second end of the external energy absorbing tube 10 by welding, and the outer diameter of the first end of the guide portion 31 can be equal to the outer diameter of the external energy absorbing tube 10, and the cross-sectional shape can be the same as the cross-sectional shape of the external energy absorbing tube 10. The second end of the guide portion 31 is connected to the connecting plate 30. Moreover, the outer diameter of the guide portion 31 gradually increases from the first end of the guide portion 31 to the second end of the guide portion 31; that is, the outer diameter of the guide portion 31 changes along the first direction, and the outer diameter of the first end of the guide portion 31 is smaller than the second end of the guide portion 31.

[0054] Based on the above arrangement, when a collision occurs, the anti-climbing teeth 20 will be subjected to a longitudinal impact in the first direction. Under the action of the impact force, the anti-climbing teeth 20 together with the connecting plate 30 will move in the first direction toward the direction of the mounting seat 40. On this basis, since the outer diameter of the guide portion 31 gradually increases from its first end to the second end, the guide portion 31 will force the edges at the second end of the external energy absorbing tube 10 to tear, so that the energy absorbing walls 11 at the second end of the external energy absorbing tube 10 are separated. Thereafter, referring to Figure 6As shown, as the anti-climbing teeth 20 and the connecting plate 30 continue to move toward the mounting seat 40, the energy-absorbing walls 11 of the external energy-absorbing tube 10 will roll outwards under the guidance of the guide portion 31. Thus, the external energy-absorbing tube 10 achieves the purpose of absorbing energy by rolling and tearing outwards.

[0055] The internal energy absorbing assembly 50 is disposed within the external energy absorbing tube 10. When the anti-climbing teeth 20 are subjected to a longitudinal impact and move in a first direction toward the mounting seat 40, the internal energy absorbing assembly 50 is configured to absorb energy by crushing. In other words, the internal energy absorbing assembly 50 is a crush-type energy absorbing component.

[0056] Specifically, combined Figure 2 As shown, the internal energy absorbing assembly 50 may include an internal energy absorbing tube 51 and a honeycomb body 52. The internal energy absorbing tube 51 and the external energy absorbing tube 10 may be coaxially arranged. One end of the internal energy absorbing tube 51 is fixedly connected to the mounting base 40, and the other end of the internal energy absorbing tube 51 is fixedly connected to the connecting plate 30. The honeycomb body 52 is filled inside the external energy absorbing tube 10 and is located outside the internal energy absorbing tube 51. The honeycomb body 52 may be an aluminum honeycomb.

[0057] Based on the above arrangement, when a collision occurs and the anti-climbing teeth 20 together with the connecting plate 30 move along the first direction toward the direction of the mounting seat 40, the connecting plate 30 will crush the internal energy absorbing tube 51 to achieve crushing energy absorption; and, when the internal energy absorbing tube 51 is crushed, the internal energy absorbing tube 51 will undergo radial deformation. On this basis, after the radially deformed portion of the internal energy absorbing tube 51 moves together with the connecting plate 30 to contact the honeycomb body 52, the radially deformed portion of the internal energy absorbing tube 51 will directly crush the honeycomb body 52, thereby achieving composite crushing energy absorption.

[0058] In some embodiments, continue to refer to Figure 2 The internal energy absorbing assembly 50 may further include a plurality of baffles 53, which are sequentially spaced along the first direction within the external energy absorbing tube 10 to divide the interior of the external energy absorbing tube 10 into a plurality of chambers 12. Honeycomb bodies 52 may be disposed within each of the plurality of chambers 12, except for the chamber 12 near the second end of the external energy absorbing tube 10. The end of the internal energy absorbing tube 51, distal from the mounting base 40, passes through the plurality of baffles 53 and is connected to the connecting plate 30.

[0059] For example, the present invention Figure 2Figure 2 shows a case where ten partitions 53 are installed inside the outer energy absorbing tube 10 to separate eleven independent chambers 12. Except for the chamber 12 near the second end of the outer energy absorbing tube 10, which does not have a honeycomb body 52, the remaining ten chambers 12 are all provided with a honeycomb body 52. It is understood that the purpose of not providing a honeycomb body 52 in the chamber 12 near the second end of the outer energy absorbing tube 10 is to provide sufficient space for the inner energy absorbing tube 51 to undergo radial deformation, so that the honeycomb body 52 in each chamber 12 can be reliably and stepwise crushed by utilizing the radially deformed portion of the inner energy absorbing tube 51.

[0060] Among them, the partition 53 can be set with reference to the setting method disclosed in the patent document previously applied for by the applicant (publication number "CN116729443B", titled "A hydraulic shear-guided anti-climbing energy absorption device"), and will not be elaborated on here.

[0061] Furthermore, in actual implementation, the multiple chambers 12 containing the honeycomb bodies 52 can be divided into multiple groups along the first direction, and the yield strength of the honeycomb bodies 52 disposed in the multiple groups of chambers 12 gradually increases from the connecting plate 30 to the mounting seat 40 .

[0062] For example, the present invention divides ten chambers 12 for placing honeycomb bodies 52 into three groups. The first group of chambers 12 close to the connecting plate 30 includes three adjacent chambers 12; the second group of chambers 12 also includes three adjacent chambers 12; the third group of chambers 12 close to the mounting seat 40 includes four adjacent chambers 12, among which the yield strength of the honeycomb body 52 arranged in the first group of chambers 12 is the lowest, and the yield strength of the honeycomb body 52 arranged in the third group of chambers 12 is the largest.

[0063] It can be understood that by setting the yield strength of the honeycomb body 52 to a gradually increasing form, the purpose of using several honeycomb bodies 52 in series is achieved. While improving the energy absorption capacity of the anti-climbing energy absorption device, it is helpful to prevent the honeycomb bodies 52 in different chambers 12 from being embedded in each other or crushed and deformed at the same time, which may cause the energy absorption effect to deteriorate, and make the crushing deformation process of the honeycomb body 52 more stable and orderly.

[0064] Moreover, when a partition 53 is provided, when the radially deformed portion of the internal energy absorbing tube 51 moves together with the connecting plate 30, the radially deformed portion of the internal energy absorbing tube 51 can impact the partitions 53 inside the external energy absorbing tube 10 in turn, thereby causing the multiple partitions 53 inside the external energy absorbing tube 10 to break in turn to release the constraints, so as to facilitate the honeycomb body 52 in each chamber 12 to be crushed in turn through the deformed portion of the internal energy absorbing tube 51, and when forcing the partition 53 to break, it can also achieve a certain energy absorption effect.

[0065] In some embodiments, the anti-climbing energy absorption device may also include: Figure 2 The guide member 60 shown. The guide member 60 can be coaxially arranged inside the internal energy absorbing tube 51, one end of the guide member 60 can be fixedly connected to the connecting plate 30, and the other end of the guide member 60 passes through the mounting seat 40 and slides with the mounting seat 40.

[0066] The provision of the guide member 60 facilitates more orderly guidance of the anti-climbing teeth 20 and the connecting plate 30 in the first direction toward the mounting seat 40, thereby further improving the reliability of the anti-climbing energy absorption device during the energy absorption process. The guide member 60 may be in the form of a beam to ensure sufficient structural strength. Furthermore, the provision of the guide member 60 helps to increase the radial load-bearing capacity of the internal energy absorption tube 51, thereby helping to improve the radial load-bearing capacity of the anti-climbing energy absorption device.

[0067] In some embodiments, combined Figure 1 and Figure 2 As shown, the anti-climbing energy absorption device may further include a guide mechanism 70 corresponding to each energy absorption wall 11 of the external energy absorption tube 10. The guide mechanism 70 is mainly used to guide the corresponding energy absorption wall 11 to roll outward in an orderly manner along the first direction. At the same time, the guide mechanism 70 can also play a role in assisting energy absorption.

[0068] Specifically, combined Figure 2 、 Figure 4 and Figure 5 As shown, a single guide mechanism 70 may include a guide rod 71, a guide block 72, and a first elastic member 73. The guide rod 71 is disposed outside the outer energy absorbing tube 10, extending in a first direction and parallel to the corresponding energy absorbing wall 11. The guide block 72 is disposed at one end of the guide rod 71, proximate to the second end of the outer energy absorbing tube 10. The other end of the guide rod 71 passes through the mounting seat 40 and slidably engages with the mounting seat 40. One end of the first elastic member 73 is connected to the mounting seat 40, and the other end of the first elastic member 73 is connected to the guide block 72, thereby elastically maintaining the guide block 72 and the guide rod 71 in their initial positions.

[0069] Furthermore, a first arc-shaped guide groove 74 is provided on the side of the guide block 72 facing the connecting plate 30 , and a second arc-shaped guide groove 75 corresponding to the first guide groove 74 is provided on the side of the connecting plate 30 facing the guide block 72 .

[0070] Based on the above arrangement, under normal conditions, the guide block 72 and the guide rod 71 are elastically held in the initial position by the first elastic member 73. Figure 1 or Figure 2When a collision occurs and each energy absorbing wall 11 of the external energy absorbing tube 10 rolls outward from the second end of the external energy absorbing tube 10, the rolled-out portion of each energy absorbing wall 11 will first be guided by the corresponding second guide groove 75 on the connecting plate 30 to roll toward the first guide groove 74 on the corresponding guide block 72. Thereafter, under the guidance of the first guide groove 74 on the corresponding guide block 72, the rolled-out portion of the energy absorbing wall 11 will be roughly rolled into a cylindrical shape and located between the corresponding guide block 72 and the connecting plate 30. Figure 6 As the collision continues, the guide block 72 together with the guide rod 71 will continue to move in the first direction away from the connecting plate 30, so as to continuously guide the corresponding energy absorbing wall 11 to roll outward in an orderly manner through the guide block 72. During this process, the first elastic member 73 will be compressed, so as to play the role of elastic compression energy absorption through the compression of the first elastic member 73 and reduce the rigid impact of the entire energy absorbing system.

[0071] In some embodiments, combined Figure 2 and Figure 5 As shown, the guide rod 71 includes a first constant diameter section 711, a reducing section 712, and a second constant diameter section 713, which are connected in sequence from the mounting seat 40 to the guide block 72. The end of the first constant diameter section 711 facing away from the reducing section 712 passes through the mounting seat 40 and slidably engages with the mounting seat 40. The guide block 72 is located at the end of the second constant diameter section 713 facing away from the reducing section 712.

[0072] The outer diameter of the first constant diameter section 711 is smaller than that of the second constant diameter section 713. The outer diameter of the variable diameter section 712 gradually increases from the first constant diameter section 711 to the second constant diameter section 713. The minimum outer diameter of the variable diameter section 712 can be equal to the outer diameter of the first constant diameter section 711, and the maximum outer diameter of the variable diameter section 712 can be equal to the outer diameter of the second constant diameter section 713.

[0073] The guide mechanism 70 may further include a cutting blade 76 disposed on the mounting seat 40. There may be multiple cutting blades 76, which are sequentially arranged around the periphery of the guide rod 71 along the circumference of the guide rod 71. The cutting blades 76 are configured to cut the reduced diameter section 712 and the second constant diameter section 713 of the guide rod 71 when the guide rod 71 moves in the first direction away from the connecting plate 30.

[0074] Specifically, when the guide rod 71 begins to move in the first direction away from the connecting plate 30, the cutter 76 disposed on the mounting seat 40 does not cut the first constant diameter section 711 of the guide rod 71, so that the guide block 72 can be smoothly guided by the guide rod 71 to move in the first direction away from the connecting plate 30. As the guide rod 71 continues to move, when the guide rod 71 moves to its own reduced diameter section 712 and reaches the cutter 76, the cutter 76 begins to cut the reduced diameter section 712 of the guide rod 71 to absorb energy through cutting; when the guide rod 71 moves to its own second constant diameter section 713 and reaches the cutter 76, as the guide rod 71 continues to move, the cutter 76 will continue to cut the second constant diameter section 713 of the guide rod 71, thereby forming a stable cutting buffer effect.

[0075] It can be understood that by setting the guide rod 71 to a variable diameter form and cooperating with the cutting knife 76, while using the guide mechanism 70 to guide the corresponding energy-absorbing wall 11 to roll outward in an orderly manner, it can also absorb energy by cutting, and the entire cutting energy absorption process is stable and reliable, which is conducive to reliably improving the energy absorption effect of the entire anti-climbing energy absorption device.

[0076] In some embodiments, continue to refer to Figure 2 or Figure 5 The guide mechanism 70 may further include a second elastic member 77. One end of the second elastic member 77 is connected to the mounting seat 40; the other end of the second elastic member 77 extends along the first direction toward the guide block 72 and terminates at the connection between the variable diameter section 712 and the second constant diameter section 713 of the guide rod 71. In other words, the end of the second elastic member 77 away from the mounting seat 40 terminates at the starting end of the second constant diameter section 713.

[0077] Thus, when the guide block 72 and the guide rod 71 move in the first direction away from the connecting plate 30, and the cutter 76 has just cut the reduced diameter section 712 of the guide rod 71, the guide block 72 has just moved to abut against the end of the second elastic member 77 away from the mounting seat 40. Thereafter, the guide block 72 and the guide rod 71 continue to move, and the cutter 76 begins to cut the second constant diameter section 713 of the guide rod 71. The second elastic member 77 is compressed under the pressure of the guide block 72, thereby achieving secondary elastic compression energy absorption.

[0078] It can be understood that, by providing the second elastic member 77 , while achieving secondary elastic compression energy absorption, the process of the cutting blade 76 cutting the second constant diameter section 713 of the guide rod 71 can be made more stable, thereby helping to improve the cutting energy absorption effect.

[0079] The first elastic member 73 and the second elastic member 77 may both be springs, such as straight springs. Furthermore, the inner diameter of the second elastic member 77 may be larger than the outer diameter of the first elastic member 73 , so that the second elastic member 77 can be sleeved outside the first elastic member 73 , thereby facilitating coaxial installation of the first elastic member 73 and the second elastic member 77 .

[0080] In some embodiments, reference Figure 2 and Figure 4 As shown, an induction groove 111 recessed toward the interior of the outer energy absorbing tube 10 may be further provided on the outer wall of each energy absorbing wall 11 near the second end of the outer energy absorbing tube 10. The provision of the induction groove 111 facilitates smoother outward tearing of each energy absorbing wall 11 at the second end of the outer energy absorbing tube 10 under the action of the guide portion 31 of the connecting plate 30.

[0081] In order to more clearly and intuitively understand the anti-climbing energy absorption device disclosed in the embodiment of the present invention, the energy absorption process of the anti-climbing energy absorption device will be further explained below.

[0082] The anti-climbing energy absorption device disclosed in the embodiments of the present invention is a combined anti-climbing device that can provide multiple energy absorption methods in the event of a collision, including external tearing, crushing, cutting, and elastic compression. During use, the entire anti-climbing energy absorption device can be installed on a rail vehicle using a mounting base 40.

[0083] When a rail vehicle collides, the anti-climbing teeth 20 are subjected to a longitudinal impact to drive the connecting plate 30 to move along the first direction toward the mounting seat 40. The guide portion 31 of the connecting plate 30 will force the edges at the second end of the external energy absorbing tube 10 to tear, so that the energy absorbing walls 11 at the second end of the external energy absorbing tube 10 are separated. As the anti-climbing teeth 20 and the connecting plate 30 continue to move along the first direction toward the mounting seat 40, the torn energy absorbing walls 11 of the external energy absorbing tube 10 are rolled outward into a cylindrical shape under the guidance of the corresponding second guide groove 75 and the first guide groove 74 on the corresponding guide block 72, and are wound between the corresponding guide block 72 and the connecting plate 30, thereby achieving outward rolling and tearing energy absorption. Figure 6 .

[0084] At the same time, for the guide mechanism 70 corresponding to each energy absorbing wall 11, the guide block 72 drives the guide rod 71 to move along the first direction away from the connecting plate 30 under the action of the energy absorbing wall 11 rolled into a cylindrical shape, and the first elastic member 73 is compressed to achieve primary elastic compression energy absorption; as the collision progresses, when the guide rod 71 moves to its own diameter-reducing section 712 and reaches the cutting knife 76, the cutting knife 76 begins to cut the diameter-reducing section 712 of the guide rod 71 to achieve cutting energy absorption; when the guide block 72 moves to abut against the end of the second elastic member 77 away from the mounting seat 40, the cutting knife 76 begins to cut the second constant diameter section 713 of the guide rod 71 to form stable cutting energy absorption, and at this time the second elastic member 77 is compressed to achieve secondary elastic compression energy absorption.

[0085] For the internal energy absorbing assembly 50, when the anti-climbing teeth 20 and the connecting plate 30 move in the first direction toward the mounting seat 40, the internal energy absorbing tube 51 is crushed and radially deformed to achieve crushing energy absorption. Thereafter, as the anti-climbing teeth 20 and the connecting plate 30 continue to move in the first direction toward the mounting seat 40, the internal energy absorbing tube 51 will continue to be crushed to absorb energy. At the same time, the radially deformed portions of the internal energy absorbing tube 51 will force the partitions 53 inside the external energy absorbing tube 10 to break in sequence, gradually releasing the constraints. This allows the honeycomb bodies 52 within each chamber 12 to be crushed in sequence through the deformed portions of the internal energy absorbing tube 51, thereby achieving composite crushing energy absorption.

[0086] It is worth noting that, for the energy-absorbing wall 11 rolled outward between the guide block 72 and the connecting plate 30 , in the later stage of the collision, this part of the energy-absorbing wall 11 rolled outward can be further compacted by the connecting plate 30 to further absorb the collision energy.

[0087] It can be seen that the anti-climbing energy absorption device disclosed in the embodiment of the present invention not only innovatively proposes an outward rolling and tearing energy absorption method, but also, on this basis, cooperates with the crushing energy absorption, which can make the energy absorption components such as the external energy absorption tube 10 and the internal energy absorption tube 51 deform in an orderly manner during the energy absorption stage, effectively improving the reliability of the entire anti-climbing energy absorption device during the energy absorption process.

[0088] At the same time, the anti-climbing energy absorption device disclosed in the embodiment of the present invention can guide the energy absorption wall 11 to roll outward in an orderly manner along the first direction by providing a guide mechanism 70 corresponding to each energy absorption wall 11 of the external energy absorption tube 10, thereby facilitating the stability of the anti-climbing energy absorption device during the energy absorption process. In addition, by providing the cutting blade 76, elastic member and other components in the guide mechanism 70, the guide mechanism 70 can not only perform a guiding function but also perform cutting energy absorption and elastic compression energy absorption, so that the entire anti-climbing energy absorption device can at least provide a variety of energy absorption methods such as rolling tearing, crushing, cutting, and elastic compression, ensuring that the anti-climbing energy absorption device can effectively absorb energy in different collision stages, effectively improving the energy absorption effect of the anti-climbing energy absorption device, and ensuring the energy absorption reliability of the anti-climbing energy absorption device in various collision scenarios, thereby helping to provide a more powerful and reliable guarantee for the safe operation of rail vehicles.

[0089] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An anti-climbing energy absorption device based on the outward tearing and crushing mechanism, characterized in that: include: an external energy absorbing tube having a first end and a second end opposite to each other in a first direction; the external energy absorbing tube comprising a plurality of energy absorbing walls sequentially arranged along the circumference of the external energy absorbing tube, each of the energy absorbing walls extending along the first direction; a mounting base fixed to the first end of the external energy absorbing tube; An anti-climbing tooth is fixed to the second end of the external energy absorbing tube through a connecting plate; the connecting plate includes a guide portion close to the external energy absorbing tube, the first end of the guide portion is connected to the second end of the external energy absorbing tube; the outer diameter of the guide portion gradually increases from the first end to the second end of the guide portion; the guide portion is configured to force the edges at the second end of the external energy absorbing tube to tear, so that the energy absorbing walls at the second end of the external energy absorbing tube are separated; and, An internal energy absorbing component is arranged inside the external energy absorbing tube; the internal energy absorbing component is configured to absorb energy by crushing when the anti-climbing tooth is subjected to a longitudinal impact and moves along the first direction toward the direction of the mounting seat.

2. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 1 is characterized in that: It also includes a guide mechanism corresponding to the energy absorbing wall one by one, and the guide mechanism includes: A guide rod extending along the first direction and parallel to the corresponding energy absorbing wall; A guide block is provided at one end of the guide rod and close to the second end of the external energy absorbing tube; the other end of the guide rod passes through the mounting seat and is slidably engaged with the mounting seat; and a first elastic member, one end of the first elastic member being connected to the mounting seat, and the other end of the first elastic member being connected to the guide block; Wherein, a first guide groove is provided on a side of the guide block facing the connecting plate, and a second guide groove corresponding to the first guide groove is provided on a side of the connecting plate facing the guide block.

3. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 2 is characterized in that: From the mounting seat to the guide block, the guide rod includes a first constant diameter section, a variable diameter section and a second constant diameter section connected in sequence; One end of the first constant diameter section away from the variable diameter section passes through the mounting seat and is slidably engaged with the mounting seat, and the guide block is provided at one end of the second constant diameter section away from the variable diameter section; The outer diameter of the first constant diameter section is smaller than that of the second constant diameter section; and the outer diameter of the variable diameter section gradually increases from the first constant diameter section to the second constant diameter section; The guide mechanism further includes a cutting knife disposed on the mounting seat, and the cutting knife is configured to cut the variable diameter section and the second constant diameter section when the guide rod moves along the first direction away from the connecting plate.

4. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 3 is characterized in that: The guide mechanism further includes a second elastic member; One end of the second elastic member is connected to the mounting seat; the other end of the second elastic member extends along the first direction toward the guide block and stops at the connection between the variable diameter section and the second constant diameter section.

5. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 4 is characterized in that: The first elastic member and the second elastic member are coaxially arranged, and the second elastic member is sleeved on the outside of the first elastic member.

6. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 1 is characterized in that: An induction groove is provided on the outer wall of each energy absorbing wall near the second end of the external energy absorbing tube.

7. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 1 is characterized in that: The internal energy absorbing component comprises: an internal energy absorbing tube, one end of which is connected to the mounting seat, and the other end of which is connected to the connecting plate; and The honeycomb body is filled in the interior of the outer energy absorbing tube and is located on the periphery of the inner energy absorbing tube.

8. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 7 is characterized in that: The internal energy absorbing assembly further includes a plurality of baffles, which are sequentially arranged in the first direction at intervals within the external energy absorbing tube to divide the interior of the external energy absorbing tube into a plurality of chambers; an end of the internal energy absorbing tube away from the mounting seat sequentially passes through the plurality of baffles and is connected to the connecting plate; Among the plurality of chambers, except the chamber close to the second end of the outer energy absorbing tube, a honeycomb body is provided in each of the remaining chambers.

9. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 8 is characterized in that: The chambers in which the honeycomb bodies are placed are divided into a plurality of groups along the first direction; The yield strength of the honeycomb bodies arranged in the plurality of groups of the chambers gradually increases from the connecting plate to the mounting seat.

10. The anti-climbing energy absorption device based on the outward tearing and crushing mechanism according to claim 7 is characterized in that: Also included are guides; The guide member is coaxially arranged inside the internal energy absorbing tube; one end of the guide member is connected to the connecting plate, and the other end of the guide member passes through the mounting seat and is slidably matched with the mounting seat.

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