A radially deformable anti-climbing energy absorption device

Abstract

The present invention relates to the technical field of anti-climbing devices, and discloses a radially deformable anti-climbing energy absorption device, including a coaxially arranged flange, an expansion tube and a pressurized tube; the pressurized tube is arranged on the first side of the flange, and the expansion tube is positioned on the second side of the flange; the second end of the pressurized tube extends to the inside of the flange and is connected to a pressurized head located inside the expansion tube; the pressurized head is configured to be movable along the axial direction of the expansion tube to force the expansion tube to deform radially; the pressurized tube extending to the inside of the flange is fixedly connected to the flange by a plurality of radially arranged fasteners, and the plurality of fasteners are sequentially distributed along the circumference of the pressurized tube. The radially deformable anti-climbing energy absorption device disclosed in the present invention can increase the deformation triggering force of the entire anti-climbing energy absorption device by adding a plurality of fasteners for connecting the pressurized tube and the flange, so that the anti-climbing energy absorption device will not be permanently deformed when a rail vehicle collides with a relatively small intensity, which is beneficial to improving the service life of the anti-climbing energy absorption device.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-climbing devices, and in particular to a radially deformable anti-climbing energy absorption device. Background Art

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

[0003] An anti-climbing device, also known as an anti-climbing energy absorption device, is a mechanical device widely used in the field of rail transit to prevent train climbing and to buffer and absorb energy. When a rail vehicle collides, the anti-climbing device's buffering and energy absorption can provide the driver and passengers with a larger living space and minimize the damage caused by the collision.

[0004] Known anti-climbers can generally be divided into cutting type, crushing type and expansion type according to the energy absorption mechanism. Among them, the expansion type anti-climber generally has a pressure head arranged inside the expansion tube, and the pressure head is connected to the anti-climbing teeth through the pressure tube. The action mechanism of this type of anti-climber can be simply summarized as follows: when a rail vehicle collides, the anti-climbing teeth are subjected to a longitudinal compression load and the pressure head moves along the axial direction of the expansion tube inside the expansion tube, thereby forcing the expansion tube to deform radially through the pressure head to expand and absorb energy. For example, the patent document with application number "CN202310537811.4" and name "An expansion type energy absorption anti-climbing device" discloses an anti-climber with a similar structure. Summary of the invention

[0005] The inventors of the present invention have found that although the above-mentioned inflatable anti-climbers have simple structures and good buffering and energy-absorbing effects, they still have certain shortcomings.

[0006] Specifically, in addition to the above-mentioned main structure, this type of inflatable anti-climber generally includes a mounting base for installing the entire inflatable anti-climber on a rail vehicle, and a flange for cooperating with the mounting base to position the expansion tube and the pressure tube, wherein the pressure tube is positioned by means of a positioning step and other structures, and there is no substantial connection between the pressure tube and the flange. With this design, the deformation triggering force of the entire inflatable anti-climber is relatively small, that is, when the anti-climber teeth are subjected to a relatively small longitudinal compression load, the pressure head may begin to move along the axial direction of the expansion tube to force the expansion tube to expand and absorb energy, thereby causing permanent deformation of the inflatable anti-climber.

[0007] On this basis, during the actual operation of rail vehicles, in addition to high-intensity collisions, such as collisions between two running rail vehicles, smaller collisions may also occur, such as collisions between rail vehicles and obstacles on the track such as animals, gravel, and piles of garbage at level crossings. Therefore, if the above-mentioned inflatable anti-climbers are applied to rail vehicles, the inflatable anti-climbers may be permanently deformed when a small collision occurs on the rail vehicle. At this time, if the inflatable anti-climber is directly replaced, since the inflatable anti-climber still has a certain buffering and energy-absorbing capacity, it will cause a waste of resources and increase additional costs. If the permanently deformed inflatable anti-climber continues to be used, when subsequent rail vehicles are involved in a large-intensity collision, the expected buffering and energy-absorbing effect may not be achieved, thus causing serious harm.

[0008] In view of this, the purpose of the present invention is to provide a radially deformable anti-climbing energy absorption device to at least overcome the technical problem that the known expansion anti-climbing device has a small deformation triggering force and may undergo permanent deformation under a collision of relatively low intensity.

[0009] The purpose of the present invention is achieved through the following technical solutions:

[0010] The invention discloses a radially deformable anti-climbing energy absorption device, comprising a coaxially arranged flange, an expansion pipe and a pressurizing pipe;

[0011] The flange has a first side and a second side opposite to each other, the pressurized tube is arranged on the first side of the flange, and the expansion tube is positioned on the second side of the flange;

[0012] The second end of the pressurizing tube extends to the inside of the flange and is connected to a pressurizing head located inside the expansion tube; the pressurizing head is configured to move along the axial direction of the expansion tube to force the expansion tube to deform radially;

[0013] The pressurized pipe extending into the interior of the flange is fixedly connected to the flange via a plurality of radially arranged fasteners, and the plurality of fasteners are sequentially distributed along the circumference of the pressurized pipe.

[0014] Furthermore, the first end of the pressurized tube is provided with anti-climbing teeth.

[0015] Furthermore, the plurality of fasteners are evenly distributed in sequence along the circumference of the pressurized pipe.

[0016] Furthermore, the pressure pipe located inside the flange is provided with first connection holes corresponding one to one with the fasteners;

[0017] The flange is provided with a second connection hole corresponding to and aligned with the first connection hole; both the first connection hole and the second connection hole extend along the radial direction of the pressurized pipe;

[0018] The fastener is suitable for extending into the first connecting hole and the second connecting hole after being aligned.

[0019] Furthermore, the first connecting hole is a through hole penetrating the inner and outer walls of the pressure pipe, and the second connecting hole is a through hole penetrating the inner and outer walls of the flange.

[0020] Furthermore, the outer wall of the pressure pipe is provided with a first groove body corresponding to the fasteners one by one, and the inner wall of the flange is provided with a second groove body corresponding to the fasteners one by one;

[0021] The first slot body and the second slot body both extend along the axial direction of the pressurized tube; and the fastener is aligned with the corresponding first slot body and the second slot body at the same time.

[0022] Further, the first slot body extends from the first end of the pressurized tube toward the corresponding fastener and ends at the corresponding fastener;

[0023] The second slot body takes the second side of the flange as a starting point and extends toward the corresponding fastener and ends at the corresponding fastener.

[0024] Furthermore, the depths of the first groove body and the second groove body are both 1-2 mm, and the widths of the first groove body and the second groove body are greater than the diameter of the fastener.

[0025] Furthermore, the radially deformable anti-climbing energy absorption device further includes a reinforcement member;

[0026] The reinforcement is vertically arranged in the pressurized pipe, and both sides of the reinforcement in the vertical direction are connected to the inner wall of the pressurized pipe.

[0027] Further, the reinforcement member extends from the first end of the pressurized pipe to the second side of the flange.

[0028] Furthermore, the pressure pipe is formed by welding two semicircular pipes.

[0029] Further, the expansion tube has a first end and a second end opposite to each other; and the expansion tube includes an expansion section adjacent to the first end thereof and a section to be expanded adjacent to the second end thereof;

[0030] The first end of the expansion pipe is positioned at the second side of the flange, and a first inclined surface section is formed between the expansion section and the section to be expanded;

[0031] The pressure head includes a guide portion and a connecting portion connected to the guide portion; the guide portion is located in the section to be expanded, and the outer wall of the guide portion is interference-fitted with the inner wall of the section to be expanded;

[0032] A second slope section matched with the first slope section is formed between the connecting portion and the guiding portion; and the connecting portion is suitable for being connected to the second end of the pressurized pipe.

[0033] Furthermore, the radially deformable anti-climbing energy absorption device further includes a pressure boss disposed between the second end of the pressure tube and the pressure head;

[0034] The pressurizing boss includes an alignment portion, a reinforcement portion and a clamping portion which are sequentially connected along the axial direction of the pressurizing tube;

[0035] A side of the alignment portion away from the reinforcement portion abuts against the second end of the pressurized pipe, and a circumferential outer wall of the alignment portion abuts against an inner wall of the flange;

[0036] A side of the reinforcing portion facing the alignment portion abuts against the second side of the flange, and a side of the reinforcing portion facing the clamping portion abuts against a side of the connecting portion away from the guide portion;

[0037] A clamping groove is arranged on one side of the connecting portion facing the pressurizing boss, and the clamping portion is clamped in the clamping groove.

[0038] Furthermore, the thickness of the reinforcing portion in the radial direction of the pressurizing boss is greater than the thickness of the aligning portion.

[0039] Furthermore, the radially deformable anti-climbing energy absorption device further comprises a mounting seat, on which a positioning groove is provided which passes through two opposite sides of the mounting seat;

[0040] The flange is positioned in the positioning groove from one side of the mounting seat, and the first end of the expansion tube extends into the positioning groove from the other side of the mounting seat;

[0041] The outer wall of the expansion tube adjacent to the first end thereof is provided with a limiting portion protruding along the radial direction of the expansion tube, a limiting groove matched with the limiting portion is provided in the positioning groove, and the limiting portion is clamped in the limiting groove.

[0042] Further, the mounting seat includes a positioning portion for defining a positioning groove, and a mounting portion provided on the circumference of the positioning portion;

[0043] A mounting hole is provided on the mounting portion; and the thickness of the positioning portion in the extending direction of the positioning groove is greater than the thickness of the mounting portion.

[0044] Furthermore, a sink groove is provided on the mounting portion.

[0045] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0046] 1. The radially deformable anti-climbing energy absorbing device disclosed in the present invention can increase the deformation triggering force of the entire anti-climbing energy absorbing device by adding multiple fasteners for connecting the pressurized pipe and the flange, so that the anti-climbing energy absorbing device will not undergo permanent deformation when a rail vehicle collides with a relatively small intensity, which is beneficial to improving the service life of the anti-climbing energy absorbing device.

[0047] 2. The present invention respectively arranges a first groove body and a second groove body on the pressurized pipe and the flange. When the fasteners between the pressurized pipe and the flange are cut off to leave the first fastening part on the pressurized pipe and the second fastening part on the flange, the first groove body and the second groove body can respectively serve as avoidance grooves for the second fastening part and the first fastening part, thereby helping to avoid the first fastening part from scratching the inner wall of the flange and the second fastening part from scratching the outer wall of the pressurized pipe when the pressurized pipe moves relative to the flange, and is beneficial to the smooth transmission of the load on the anti-climbing teeth and the smooth movement of the pressurizing head along the axial direction of the expansion pipe, thereby ensuring as much as possible that the radial deformation of the expansion pipe will not be affected by the cut fasteners.

[0048] 3. The present invention can effectively improve the vertical bearing capacity of the pressurized pipe by arranging vertically arranged reinforcement members inside the pressurized pipe. When two rail vehicles collide in a non-ideal centering manner, the pressurized pipe can withstand a larger vertical load and additional bending moment. Therefore, it can ensure as much as possible that the anti-climbing energy absorption device can fully exert its buffering energy absorption efficiency, and it is beneficial to reduce the risk of failure of the anti-climbing energy absorption device. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic structural diagram of a radially deformable anti-climbing energy absorption device provided in an embodiment of the present invention;

[0050] Figure 2 for Figure 1 A cross-sectional view of the radially deformable anti-climbing energy absorption device shown in FIG.

[0051] Figure 3 for Figure 1 A cross-sectional view of the radially deformable anti-climbing energy absorption device at a side view angle shown in FIG.

[0052] Figure 4 A schematic diagram of the structure of an expansion tube provided by an embodiment of the present invention;

[0053] Figure 5 A schematic diagram of the structure of a flange provided in an embodiment of the present invention;

[0054] Figure 6 A schematic diagram of the structure of a pressurized tube provided in an embodiment of the present invention;

[0055] Figure 7 A schematic diagram of the structure of a mounting base provided by an embodiment of the present invention;

[0056] Figure 8 A schematic structural diagram of a pressure head provided in an embodiment of the present invention;

[0057] Fig. 9 A schematic structural diagram of a pressure boss provided in an embodiment of the present invention;

[0058] Fig.10 for Figure 2 A magnified view of the local structure at point A.

[0059] Icons: 10-expansion tube, 11-expansion section, 12-section to be expanded, 13-first inclined section, 14-limiting part, 20-flange, 21-second connecting hole, 22-second trough body, 30-pressurized tube, 31-first connecting hole, 32-first trough body, 40-mounting seat, 41-positioning groove, 42-limiting groove, 43-positioning part, 44-mounting part, 45-mounting hole, 46-sunk groove, 50-anti-climbing tooth, 60-pressurizing head, 61-guide part, 62-connecting part, 63-second inclined section, 64-slot, 70-fastener, 71-first fastening part, 72-second fastening part, 80-reinforcement member, 90-pressurized boss, 91-alignment part, 92-reinforcement part, 93-clamping part, 100-locking bolt. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with specific implementation methods below. 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.

[0061] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of the present invention may have fewer components, other 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.

[0062] The embodiment of the present invention discloses a radially deformable anti-climbing energy absorption device, which at least overcomes the technical problem that the deformation triggering force of the known expansion type anti-climbing device is small and permanent deformation may occur under a collision of small intensity. For the convenience of description, the radially deformable anti-climbing energy absorption device disclosed in the embodiment of the present invention is referred to as the "anti-climbing energy absorption device" hereinafter.

[0063] It should be noted that the deformation triggering force described in the embodiment of the present invention refers to: the force that forces the expansion tube 10 in the inflatable anti-climber device to begin to deform radially to expand and absorb energy.

[0064] Figure 1 is a schematic structural diagram of an exemplary anti-climbing energy absorption device disclosed in an embodiment of the present invention, Figure 2 for Figure 1The cross-sectional view of the anti-climbing energy absorption device shown in FIG. Figure 3 for Figure 1 A cross-sectional view of the anti-climbing energy absorption device shown in FIG.

[0065] exist Figures 1 to 3 In the illustrated embodiment, the anti-climbing energy absorption device may include an expansion tube 10 , a flange 20 , a pressurized tube 30 and a mounting seat 40 .

[0066] The pressurized pipe 30, the flange 20 and the expansion pipe 10 may be coaxially arranged. In particular, the pressurized pipe 30, the flange 20 and the expansion pipe 10 may be coaxially arranged along the running direction of the rail vehicle.

[0067] The flange 20 has a first side and a second side opposite to each other. The expansion tube 10 is positioned on the second side of the flange 20 by means of the mounting seat 40, so that when the anti-climbing energy absorption device buffers and absorbs energy, the flange 20, the expansion tube 10 and the mounting seat 40 are basically stationary relative to the rail vehicle, that is, the positions of the flange 20, the expansion tube 10 and the mounting seat 40 on the rail vehicle are basically unchanged. The manner in which the expansion tube 10 is positioned on the second side of the flange 20 by means of the mounting seat 40 will be described in detail below.

[0068] Reference Figure 1 or Figure 2 As shown, the pressurized tube 30 is arranged on the first side of the flange 20. The first end of the pressurized tube 30 is provided with an anti-climbing tooth 50, for example, the anti-climbing tooth 50 can be welded to the first end of the pressurized tube 30 by welding; the second end of the pressurized tube 30 extends to the inside of the flange 20 and is connected to a pressurizing head 60 located inside the expansion tube 10. Among them, when the rail vehicle collides, specifically a collision of greater intensity, the anti-climbing tooth 50 will be subjected to a longitudinal compression load to force the pressurized tube 30 together with the pressurizing head 60 to move along the axial direction of the expansion tube 10, specifically, to move along the axial direction of the expansion tube 10 in a direction away from the flange 20, thereby forcing the expansion tube 10 to deform radially through the pressurizing head 60 to expand and absorb energy. Among them, the structure of the pressurizing head 60 and the matching relationship between the pressurizing head 60 and the expansion tube 10 will be described in detail below.

[0069] Different from the inflatable anti-climbing device known in the prior art, in the anti-climbing energy absorbing device disclosed in the embodiment of the present invention, Figure 1 , Figure 2 or Figure 3 As shown, the pressurized pipe 30 extending into the interior of the flange 20 is fixedly connected to the flange 20 by a plurality of radially arranged fasteners 70, that is, the axis of the fastener 70 points to the central axis of the pressurized pipe 30 and extends in the radial direction of the pressurized pipe 30. In addition, the plurality of fasteners 70 are sequentially distributed along the circumference of the pressurized pipe 30.

[0070] It is worth explaining that the anti-climbing energy absorbing device disclosed in the embodiment of the present invention, by adding a plurality of fasteners 70 for connecting the pressurized pipe 30 and the flange 20, is mainly intended to increase the deformation triggering force of the anti-climbing energy absorbing device, so that the anti-climbing energy absorbing device will not undergo permanent deformation when a rail vehicle collides with a relatively small intensity. Only when the rail vehicle collides with a relatively large intensity and the longitudinal compression load on the anti-climbing teeth 50 is greater than or equal to the deformation triggering force of the anti-climbing energy absorbing device, will the expansion tube 10 in the anti-climbing energy absorbing device undergo radial deformation to expand and absorb energy.

[0071] Specifically, based on the connection between the pressurized tube 30 and the flange 20 through a plurality of radially arranged fasteners 70, each fastener 70 can provide a shear resistance in the axial direction of the pressurized tube 30. Under the shear resistance of each fastener 70, the deformation triggering force of the entire anti-climbing energy absorbing device will be improved. In this way, when a collision of relatively small intensity occurs in the rail vehicle, the longitudinal compression load on the anti-climbing teeth 50 is less than the deformation triggering force of the anti-climbing energy absorbing device, which can also be understood as the sum of the shear resistance provided by all fasteners 70. Each fastener 70 will not be sheared off, and the longitudinal compression load on the anti-climbing teeth 50 cannot be effectively transmitted to the pressurized head 60, and the pressurized head 60 will not move along the axial direction of the expansion tube 10, and the entire anti-climbing energy absorbing device will not be permanently deformed.

[0072] Correspondingly, when the rail vehicle collides with great intensity, the longitudinal compression load received by the anti-climbing tooth 50 will be greater than or equal to the deformation triggering force of the anti-climbing energy absorption device. It can also be understood that the longitudinal compression load received by the anti-climbing tooth 50 is greater than or equal to the sum of the shear resistances of all fasteners 70. At this time, the portions of all fasteners 70 between the outer wall of the pressurized tube 30 and the inner wall of the flange 20 will be sheared off, and the longitudinal compression load received by the anti-climbing tooth 50 will be transmitted to the pressurizing head 60 through the pressurized tube 30, thereby causing the pressurizing head 60 to move axially along the expansion tube 10 to force the expansion tube 10 to deform radially.

[0073] In some embodiments of the present invention, the plurality of fasteners 70 may be evenly distributed along the circumference of the pressurized tube 30, that is, the spacing between two adjacent fasteners 70 may be the same. This is conducive to evenly distributing the anti-shearing force provided by each fastener 70, thereby improving the reliability of the entire anti-climbing energy absorption device when in use. Figure 3 As shown, the accompanying drawings of the present invention show that the pressurized pipe 30 and the flange 20 are connected by eight fasteners 70 evenly distributed along the circumference of the pressurized pipe 30. Of course, the number of fasteners 70 is not limited to this and is not limited here.

[0074] In some embodiments of the present invention, the fastener 70 can be conveniently assembled and disassembled by, but not limited to, the following methods.

[0075] Combination Figure 5 and Figure 6 As shown, the pressurized tube 30 located inside the flange 20 is provided with a first connection hole 31 corresponding to the fastener 70. The flange 20 is provided with a second connection hole 21 corresponding to and aligned with the first connection hole 31. The first connection hole 31 and the second connection hole 21 both extend in the radial direction of the pressurized tube 30.

[0076] Among them, the first connecting hole 31 can be a through hole that penetrates the inner and outer walls of the pressurized pipe 30 along the radial direction of the pressurized pipe 30, and the second connecting hole 21 can be a through hole that penetrates the inner and outer walls of the flange 20 along the radial direction of the pressurized pipe 30, so as to further facilitate the installation of the fastener 70.

[0077] In this way, the fastener 70 can be conveniently installed in place by only inserting a single fastener 70 into one set of the aligned first connection holes 31 and the second connection holes 21 .

[0078] The fastener 70 used to connect the pressurized pipe 30 and the flange 20 may be a bolt, and the first connecting hole 31 and the second connecting hole 21 may be threaded holes, so as to further simplify the installation process of the fastener 70 and enable the fastener 70 to provide the required shear resistance.

[0079] In some embodiments of the present invention, in combination with the above, when the longitudinal compression load exerted on the anti-climbing teeth 50 is greater than or equal to the deformation trigger force of the anti-climbing energy absorption device, all fasteners 70 used to connect the pressurized pipe 30 and the flange 20 will be sheared off, and the disconnection position of the fasteners 70 is exactly located between the outer wall of the pressurized pipe 30 and the inner wall of the flange 20.

[0080] It is foreseeable that when the fastener 70 is cut, the fastener 70 will be divided into two parts, namely Fig.10 The first fastening portion 71 remaining on the pressurized pipe 30 and the second fastening portion 72 remaining on the flange 20 are shown. In addition, the position of the first fastening portion 71 facing the inner wall of the flange 20 and the position of the second fastening portion 72 facing the outer wall of the pressurized pipe 30 may form uneven fractures, and the fracture on the first fastening portion 71 may contact the inner wall of the flange 20, and the fracture on the second fastening portion 72 may contact the outer wall of the pressurized pipe 30.

[0081] On this basis, if the pressurizing tube 30 drives the pressurizing head 60 to start moving axially along the expansion tube 10 under the action of the anti-creep teeth 50, not only may the broken end of the first fastening part 71 scratch the inner wall of the flange 20 and the broken end of the second fastening part 72 scratch the outer wall of the pressurizing tube 30, but it will also affect the smooth transmission of the load on the anti-creep teeth 50 and the smooth movement of the pressurizing head 60 along the axial direction of the expansion tube 10, thereby affecting the radial deformation of the expansion tube 10, and further may affect the buffering energy absorption effect.

[0082] To this end, the embodiments of the present invention further improve the structures of the pressurized pipe 30 and the flange 20 .

[0083] Specifically, combined Figure 6 As shown, the outer wall of the pressurized tube 30 is provided with first grooves 32 corresponding to the fasteners 70 one by one. Each first groove 32 extends along the axial direction of the pressurized tube 30, and each first groove 32 can be a groove structure that is recessed from the outer wall of the pressurized tube 30 toward the inner wall of the pressurized tube 30. For example, the first groove 32 can be an arc groove or a flat groove that is recessed from the outer wall of the pressurized tube 30 toward the inner wall of the pressurized tube 30. Preferably, the first groove 32 can be a flat groove to minimize the influence of the first groove 32 on the strength of the pressurized tube 30.

[0084] Furthermore, each fastener 70 is aligned with the corresponding first slot body 32 . That is, the axis of each fastener 70 intersects with the axis of the corresponding first slot body 32 .

[0085] Combination Figure 5 As shown, the inner wall of the flange 20 is provided with second grooves 22 corresponding to the fasteners 70 one by one. Each second groove 22 extends along the axial direction of the pressure pipe 30, and each second groove 22 can be a groove structure that is recessed from the inner wall of the flange 20 toward the outer wall of the flange 20. For example, the second groove 22 can be an arc groove or a flat groove that is recessed from the inner wall of the flange 20 toward the outer wall of the flange 20. Preferably, the second groove 22 can also be a flat groove to minimize the influence of the second groove 22 on the strength of the flange 20.

[0086] Furthermore, each fastener 70 is aligned with the corresponding second slot body 22. That is, the axis of each fastener 70 intersects with the axis of the corresponding second slot body 22.

[0087] In an embodiment of the present invention, the first groove body 32 is used as an avoidance groove for the second fastening portion 72, and the second groove body 22 is used as an avoidance groove for the first fastening portion 71. Specifically, in combination with the above, when the fastener 70 is cut off and divided into the first fastening portion 71 remaining on the pressurized pipe 30 and the second fastening portion 72 remaining on the flange 20, if the pressurized pipe 30 drives the pressurizing head 60 to move along the axial direction of the expansion pipe 10 under the action of the anti-climbing teeth 50, the fracture of the first fastening portion 71 will eventually enter the corresponding second groove body 22 and move along the corresponding second groove body 22, thereby avoiding the fracture of the first fastening portion 71 from directly contacting the inner wall of the flange 20, and accordingly, the fracture of the second fastening portion 72 will eventually enter the corresponding first groove body 32 and move along the corresponding first groove body 32, thereby avoiding the fracture of the second fastening portion 72 from directly contacting the outer wall of the pressurized pipe 30.

[0088] It can be seen that through the arrangement of the first groove body 32 and the second groove body 22, the cut fastener 70 can be effectively prevented from scratching the pressure pipe 30 and the flange 20, while being beneficial to the smooth transmission of the load on the anti-climbing teeth 50 and the smooth movement of the pressure head 60 along the axial direction of the expansion pipe 10, thereby ensuring as much as possible that the radial deformation of the expansion pipe 10 will not be affected by the cut fastener 70.

[0089] For further information, please refer to Figure 6 , the first slot body 32 may be a structure that extends from the first end of the pressurized tube 30 toward the corresponding fastener 70 and stops at the corresponding fastener 70. The first slot body 32 stops at the corresponding fastener 70, which means that the first slot body 32 does not extend any further after extending to the corresponding fastener 70, and the first slot body 32 does not cover the portion of the pressurized tube 30 where the corresponding fastener 70 is located, that is, does not cover the corresponding first connecting hole 31. In this way, the processing and manufacturing of the first slot body 32 is facilitated, and the first slot body 32 can be used as an avoidance groove for the second fastening portion 72.

[0090] Accordingly, the second slot body 22 may be a structure that extends from the second side of the flange 20 toward the corresponding fastener 70 and stops at the corresponding fastener 70. The second slot body 22 stops at the corresponding fastener 70, which means that the second slot body 22 does not extend any further after extending to the corresponding fastener 70, and the second slot body 22 does not cover the portion of the flange 20 where the corresponding fastener 70 is located, that is, does not cover the corresponding second connection hole 21. This is beneficial to the processing and manufacturing of the second slot body 22, and ensures that the second slot body 22 can be used as an avoidance groove for the first fastening portion 71.

[0091] Among them, the depth of the first groove body 32 and the second groove body 22 can be 1-2 mm, and the width of the first groove body 32 and the second groove body 22 is greater than the diameter of the fastener 70. Specifically, the width of the first groove body 32 is greater than the diameter of the first connecting hole 31, and the width of the second groove body 22 is greater than the diameter of the second connecting hole 21.

[0092] In some embodiments of the present invention, in addition to the problem that the deformation trigger force of the known inflatable anti-climber has the aforementioned small, permanent deformation of the inflatable anti-climber will occur when a rail vehicle collides with a small intensity, since the pressurized tube 30 in the known inflatable anti-climber is generally a hollow tube body, specific reference may be made to the anti-climber disclosed in the patent document with application number "CN202310537811.4" and name "An Inflatable Energy Absorption Anti-Climbing Device", which makes the vertical bearing capacity of the pressurized tube 30 small, that is, the vertical load that the pressurized tube 30 can withstand is small.

[0093] In addition, due to factors such as wheel wear, vehicle nodding, and uneven line load, the actual heights of the inflatable anti-climbers installed on different rail vehicles may be different. On this basis, when two rail vehicles collide, what may occur between the two is not an ideal centering collision (that is, a collision in which the anti-climbing teeth 50 in the two inflatable anti-climbers face each other), but a non-ideal centering collision. In this case, the anti-climbing teeth 50 in the inflatable anti-climbers on the two rail vehicles have a large vertical offset. At this time, the pressurized pipe 30 in the inflatable anti-climber may be subjected to a huge vertical force and additional bending moment, thereby affecting the buffering energy absorption of the inflatable anti-climber, and may even cause the pressurized pipe 30 to bend, deform, or break, resulting in failure of the inflatable anti-climber.

[0094] To this end, combined Figure 2 , Figure 3 and Figure 6 As shown in the figure, the anti-climbing energy absorption device disclosed in the embodiment of the present invention may further include a reinforcement member 80. The reinforcement member 80 is vertically arranged in the pressurized pipe 30, and both sides of the reinforcement member 80 in the vertical direction may be connected to the inner wall of the pressurized pipe 30.

[0095] It can be understood that by arranging a vertically arranged reinforcement 80 inside the pressurized tube 30, the vertical bearing capacity of the pressurized tube 30 can be effectively improved. In this way, even if two rail vehicles have an imperfectly centered collision, since the pressurized tube 30 can withstand a larger vertical load and additional bending moment, it can ensure as much as possible that the anti-climbing energy absorption device can fully exert its buffering energy absorption efficiency, and it is beneficial to reduce the risk of failure of the anti-climbing energy absorption device.

[0096] Furthermore, in combination with the foregoing, as the pressurizing head 60 moves axially along the expansion tube 10, the pressurizing tube 30 will gradually enter the expanded expansion tube 10. Therefore, by improving the vertical bearing capacity of the pressurizing tube 30, it is also helpful to improve the structural strength and anti-eccentric load capability of the expansion tube 10, and reduce the risk of adverse phenomena such as bending and deformation of the expansion tube 10.

[0097] Further, see Figure 2 As shown, the reinforcement member 80 may be a member extending from the first end of the pressurized pipe 30 to the second side of the flange 20. It is worth noting that since the flange 20 is equivalent to a fulcrum for resisting vertical loads in the entire anti-climbing energy absorption device, by extending the reinforcement member 80 from the first end of the pressurized pipe 30 to the second side of the flange 20 (i.e., the end of the flange 20), the vertical bearing capacity of the pressurized pipe 30 in all areas in its axial direction can be improved.

[0098] Furthermore, the reinforcement member 80 may be Figure 6 Furthermore, the reinforcing member 80 may be a plate-shaped member as shown. Figure 2 or Figure 6 As shown, the two reinforcement members 80 may be symmetrically distributed around the central axis of the pressurized pipe 30. This is beneficial to further improve the vertical bearing capacity of the pressurized pipe 30. Of course, in other embodiments of the present invention, the reinforcement members 80 may also have other numbers, which are not limited here.

[0099] In some embodiments of the present invention, the pressurized tube 30 may be a component formed by welding two semicircular tubes. Thus, when actually processing the pressurized tube 30 with the reinforcement 80 inside, the reinforcement 80 may be welded inside the two semicircular tubes respectively, and then the two semicircular tubes with the reinforcement 80 welded inside are welded into the pressurized tube 30, which is conducive to simplifying the process of processing the pressurized tube 30 with the reinforcement 80 inside.

[0100] In some embodiments of the present invention, the cooperation between the pressure head 60 and the expansion tube 10 can be achieved in the following manner but is not limited to, so that when the pressure head 60 moves along the axial direction of the expansion tube 10, the expansion tube 10 can undergo radial deformation to expand and absorb energy.

[0101] Combination Figure 4 As shown, the expansion tube 10 has a first end and a second end opposite to each other, and the expansion tube 10 includes an expansion section 11 adjacent to the first end thereof and a section to be expanded 12 adjacent to the second end thereof, and in an initial state, the expansion section 11 is a radially deformed portion relative to the section to be expanded 12. The first end of the expansion tube 10 is positioned at the second side of the flange 20, and a first inclined surface section 13 is formed between the expansion section 11 and the section to be expanded 12.

[0102] Combination Figure 8 As shown in the figure, the pressure head 60 located inside the expansion tube 10 may include a guide portion 61 and a connecting portion 62. Fig.10 As shown, the guide portion 61 is located in the section to be expanded 12, and the outer wall of the guide portion 61 can be interference-fitted with the inner wall of the section to be expanded 12, the connecting portion 62 is connected to the guide portion 61, and a second sloped surface section 63 that matches the first sloped surface section 13 is formed between the connecting portion 62 and the guide portion 61. In addition, the connecting portion 62 is suitable for connecting to the second end of the pressurized pipe 30.

[0103] In this way, combined with the above, when the pressurizing tube 30 drives the pressurizing head 60 to move axially along the expansion tube 10 under the action of the anti-climbing teeth 50, under the cooperation of the second inclined surface section 63 on the pressurizing head 60 and the first inclined surface section 13 in the expansion tube 10, the section 12 to be expanded of the expansion tube 10 will gradually undergo radial deformation to expand and absorb energy.

[0104] Furthermore, by providing the guide portion 61, the pressure head 60 can form a self-guiding structure with the expansion tube 10 with the aid of the guide portion 61. While the pressure head 60 can reliably move along the axial direction of the expansion tube 10, as the to-be-expanded section 12 of the expansion tube 10 continuously undergoes radial deformation, the bending deformation force arm of the expansion tube 10 (that is, the to-be-expanded section 12 of the expansion tube 10 which has not yet undergone radial deformation) is further shortened, thereby facilitating further improving the anti-eccentric load resistance of the anti-climbing energy absorption device, enhancing the anti-climbing capability of the anti-climbing energy absorption device, and improving the vertical compression strength of the entire anti-climbing energy absorption device.

[0105] In some embodiments of the present invention, the anti-climbing energy absorption device may also include: Figure 2 The pressurizing boss 90 is shown, and the pressurizing boss 90 is disposed between the second end of the pressurizing tube 30 and the pressurizing head 60 .

[0106] like Fig. 9 As shown, the pressurizing boss 90 may be a substantially columnar hollow member, so as to realize a lightweight design of the pressurizing boss 90. In addition, the pressurizing boss 90 may include an alignment portion 91, a reinforcement portion 92 and a clamping portion 93 sequentially connected along the axial direction of the pressurizing tube 30.

[0107] Among them, refer to Fig.10 As shown, one end of the alignment portion 91 away from the reinforcement portion 92 abuts against the second end of the pressurized pipe 30 , and the circumferential outer wall of the alignment portion 91 may abut against the inner wall of the flange 20 .

[0108] The side of the reinforcing portion 92 facing the alignment portion 91 can abut against the second side of the flange 20 , and the side of the reinforcing portion 92 facing the clamping portion 93 can abut against the side of the connecting portion 62 in the pressure head 60 away from the guide portion 61 .

[0109] A slot 64 is formed on one side of the connection portion 62 of the pressure head 60 facing the pressure boss 90 , and the clamping portion 93 of the pressure boss 90 is clamped in the slot 64 .

[0110] Based on the above arrangement, the purpose of reliably positioning the pressure boss 90 between the pressure tube 30 and the pressure head 60 is achieved. In this way, when the pressure tube 30 moves along the axial direction of the expansion tube 10 under the action of the anti-climbing teeth 50, the pressure tube 30 can drive the pressure head 60 to move along the axial direction of the expansion tube 10 with the help of the pressure boss 90.

[0111] Moreover, the thickness of the reinforcing portion 92 in the radial direction of the pressurizing boss 90 is greater than the thickness of the aligning portion 91. In this way, it is beneficial to increase the wall thickness of the portion between the pressurizing tube 30 and the pressurizing head 60 to ensure the strength reliability of the force-bearing area between the pressurizing tube 30 and the pressurizing head 60, and through the above-mentioned matching relationship, not only the reliable positioning of the pressurizing boss 90 is achieved, but also there is no substantial connection relationship between the pressurizing boss 90 and the pressurizing tube 30, which is beneficial to the assembly positioning of the pressurizing tube 30, the pressurizing boss 90 and the pressurizing head 60.

[0112] In addition, the embodiment of the present invention sets the pressure head 60 as a component independent of the pressure tube 30. On the one hand, it is beneficial to the processing and manufacturing of the pressure head 60. On the other hand, since the pressure head 60 needs to be made of a material with very high hardness requirements, the corresponding processing and manufacturing costs are relatively high. Compared with the method of setting the pressure head 60 and the pressure tube 30 as an integrated structure, it is more conducive to controlling the processing and manufacturing costs of the entire anti-climbing energy absorption device.

[0113] In some embodiments of the present invention, the first end of the expansion tube 10 can be reliably positioned on the second side of the flange 20 in the manner described below but is not limited thereto.

[0114] Combination Figure 7 As shown in the figure, the mounting seat 40 is provided with a positioning groove 41, and the positioning groove 41 runs through the two opposite sides of the mounting seat 40. Figure 2 or Fig.10 As shown, the flange 20 can be positioned in the positioning groove 41 from one side of the mounting seat 40, and the flange 20 can be positioned by means of Figure 1 or Figure 3 The locking bolts 100 and other components shown are fixedly connected to the mounting base 40 to improve the stability of the flange 20 after installation.

[0115] Continue to refer to Figure 2 or Fig.10 As shown, the first end of the expansion pipe 10 can extend from the other side of the mounting seat 40 into the positioning groove 41, so that the end surface of the first end of the expansion pipe 10 abuts against the end surface of the second side of the flange 20. Figure 4 or Fig.10As shown in the figure, the outer wall of the expansion tube 10 adjacent to the first end thereof may be provided with a stopper 14 protruding in the radial direction of the expansion tube 10. Specifically, the stopper 14 is formed on the outer wall of the expansion section 11 of the expansion tube 10. The positioning groove 41 of the mounting seat 40 is provided with a stopper 14 protruding in the radial direction of the expansion tube 10. Figure 7 The limiting groove 42 shown is adapted to the limiting portion 14 , and the limiting portion 14 is clamped in the limiting groove 42 .

[0116] In this way, the freedom of the expansion tube 10 in its own axial direction can be limited, so that the first end of the expansion tube 10 can be reliably positioned on the second side of the flange 20 .

[0117] For further information, please refer to Figure 7 The mounting seat 40 may include a positioning portion 43 for defining a positioning groove 41, and two mounting portions 44 arranged on the circumference of the positioning portion 43. Each mounting portion 44 may be provided with a mounting hole 45, so that the entire mounting seat 40, or even the entire anti-climbing energy absorbing device, can be fixedly mounted on the rail vehicle by means of the mounting hole 45, for example, on the mounting interface of the rail vehicle.

[0118] Furthermore, the thickness of the positioning portion 43 in the extending direction of the positioning groove 41 is greater than the thickness of the mounting portion 44. In this way, while ensuring the structural strength of the mounting seat 40, it is beneficial to the lightweight design of the mounting seat 40.

[0119] Furthermore, each mounting portion 44 may be provided with an inwardly recessed groove 46 to further facilitate a lightweight design of the mounting seat 40 .

[0120] In some embodiments of the present invention, the manufacturing materials of each component can be reasonably selected according to the specific application conditions of the anti-climbing energy absorption device. For example, in an embodiment of the present invention, the anti-climbing teeth 50, the pressure tube 30, the pressure boss 90, the expansion tube 10, the reinforcement 80 and other components can be made of Q355NE steel; the mounting seat 40, the flange 20 and other components can be made of 45# steel; the pressure head 60 can be made of DAC55 steel; the bolts used as the fasteners 70 and the locking bolts 100 used to fix the flange 20 can all be made of A2-70.

[0121] Moreover, with respect to the anti-climbing energy absorption device disclosed in the embodiment of the present invention, different longitudinal compression load bearing requirements can be matched by reasonably adjusting the number and / or specifications of the fasteners 70, that is, the deformation trigger force of the anti-climbing energy absorption device can be adjusted as needed. Correspondingly, by adjusting the length of the pressurized tube 30 and the expansion tube 10, different deformation stroke requirements can be matched. By adjusting the thickness and outer diameter of the expansion tube 10, different deformation force value requirements can be matched. By adjusting the size of the mounting seat 40, such as the position, number, size, etc. of the mounting holes 45, different mounting interfaces on the rail vehicle can be matched.

[0122] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A radially deformable anti-climbing energy absorption device, characterized in that: It includes a flange, an expansion pipe and a pressure pipe which are coaxially arranged; The flange has a first side and a second side opposite to each other, the pressurized tube is arranged on the first side of the flange, and the expansion tube is positioned on the second side of the flange; The second end of the pressurizing tube extends to the inside of the flange and is connected to a pressurizing head located inside the expansion tube; the pressurizing head is configured to move along the axial direction of the expansion tube to force the expansion tube to deform radially; The pressurized pipe extending into the interior of the flange is fixedly connected to the flange by a plurality of radially arranged fasteners, and the plurality of fasteners are sequentially distributed along the circumference of the pressurized pipe; The outer wall of the pressure pipe is provided with a first groove body corresponding to the fasteners one by one, and the inner wall of the flange is provided with a second groove body corresponding to the fasteners one by one; The first slot body and the second slot body both extend along the axial direction of the pressurized tube; and the fastener is aligned with the corresponding first slot body and the second slot body at the same time.

2. The radially deformable anti-climbing energy absorption device according to claim 1, characterized in that: The first slot body extends from the first end of the pressurized tube toward the corresponding fastener and ends at the corresponding fastener; The second slot body takes the second side of the flange as a starting point and extends toward the corresponding fastener and ends at the corresponding fastener.

3. The radially deformable anti-climbing energy absorption device according to claim 1, characterized in that: Also included are reinforcements; The reinforcement is vertically arranged in the pressurized pipe, and both sides of the reinforcement in the vertical direction are connected to the inner wall of the pressurized pipe.

4. The radially deformable anti-climbing energy absorption device according to claim 3, characterized in that: The reinforcement member extends from the first end of the pressurized pipe to the second side of the flange.

5. The radially deformable anti-climbing energy absorption device according to claim 3, characterized in that: The pressure pipe is welded from two semicircular pipes.

6. The radially deformable anti-climbing energy absorption device according to claim 1, characterized in that: The expansion tube has a first end and a second end opposite to each other; and the expansion tube includes an expansion section adjacent to the first end thereof and a to-be-expanded section adjacent to the second end thereof; The first end of the expansion pipe is positioned at the second side of the flange, and a first inclined surface section is formed between the expansion section and the section to be expanded; The pressure head includes a guide portion and a connecting portion connected to the guide portion; the guide portion is located in the section to be expanded, and the outer wall of the guide portion is interference-fitted with the inner wall of the section to be expanded; A second slope section matched with the first slope section is formed between the connecting portion and the guiding portion; and the connecting portion is connected to the second end of the pressurizing pipe.

7. The radially deformable anti-climbing energy absorption device according to claim 6, characterized in that: It also includes a pressurizing boss disposed between the second end of the pressurizing tube and the pressurizing head; The pressurizing boss includes an alignment portion, a reinforcement portion and a clamping portion which are sequentially connected along the axial direction of the pressurizing tube; A side of the alignment portion away from the reinforcement portion abuts against the second end of the pressurized pipe, and a circumferential outer wall of the alignment portion abuts against an inner wall of the flange; The side of the reinforcement portion facing the alignment portion abuts against the second side of the flange, the side of the reinforcement portion facing the clamping portion abuts against the side of the connecting portion away from the guide portion, and the circumferential outer wall of the reinforcement portion abuts against the inner wall of the expansion section; A clamping groove is arranged on one side of the connecting portion facing the pressurizing boss, and the clamping portion is clamped in the clamping groove.

8. The radially deformable anti-climbing energy absorption device according to claim 7, characterized in that: The thickness of the reinforcing portion in the radial direction of the pressurizing boss is greater than the thickness of the aligning portion.

9. The radially deformable anti-climbing energy absorption device according to claim 1, characterized in that: Also included is a mounting seat, the mounting seat being provided with positioning grooves penetrating two opposite sides of the mounting seat; The flange is positioned in the positioning groove from one side of the mounting seat, and the first end of the expansion tube extends into the positioning groove from the other side of the mounting seat; The outer wall of the expansion tube adjacent to the first end thereof is provided with a limiting portion protruding along the radial direction of the expansion tube, a limiting groove matched with the limiting portion is provided in the positioning groove, and the limiting portion is clamped in the limiting groove.

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