Hydraulic shear-guided Anti-climbing energy absorption device

Abstract

The present invention relates to the technical field of anti-climbers, and provides a hydraulic shear-guided anti-climbing energy absorption device. The device comprises an energy absorption pipe, an anti-climbing portion, a first connection portion, a plurality of partition plates, and two guide plates. The anti-climbing portion is disposed at one end of the energy absorption pipe, and the first connection portion is disposed at the other end of the energy absorption pipe. In the axial direction of the energy absorption pipe, the plurality of partition plates are sequentially arranged in the interior of the energy absorption pipe to divide the interior of the energy absorption pipe into a plurality of first energy absorption cavities, and the plurality of first energy absorption cavities are each filled with a first honeycomb structure. In the vertical direction of the energy absorption pipe, the two guide plates are symmetrically arranged inside the energy absorption pipe. Each guide plate is obliquely arranged and is provided with a connection end and a free end disposed opposite to each other, the connection end is connected to the anti-climbing portion, and the free end sequentially passes through the plurality of partition plates and then extends out of the first connection portion. The anti-climbing energy absorption device provided in the present invention achieves ordered and controllable plastic deformation of the energy absorption pipe and the honeycomb structures along the longitudinal impact direction during the energy absorption phase, while enhancing the load bearing capacity of the anti-climbing energy absorption device in vertical and horizontal directions.

Description

A hydraulic shear-guided anti-climbing energy absorption device Technical Field

[0001] The present invention relates to the technical field of anti-climbing devices, and in particular to a hydraulic shear-guided anti-climbing energy-absorbing device. Background Art

[0002] An anti-climber is a mechanical device widely used in the rail transit field to prevent train riders from climbing and to buffer and absorb energy. When a train collides, the anti-climber can provide a larger living space for the driver and passengers through the buffering and energy absorption of the anti-climber, and greatly reduce the damage caused by the collision.

[0003] Existing anti-climbers are mainly divided into three types according to their different working mechanisms: cutting type, crushing type and expansion type. Among them, the crushing anti-climber is an anti-climber that fills a honeycomb inside an energy-absorbing tube (usually a thin metal tube) to achieve the goal that when a train collides, the energy-absorbing tube and the honeycomb are squeezed and deformed, thereby absorbing the collision energy.

[0004] Although the crush type anti-climber has the advantages of simple structure and low cost, the existing crush type anti-climber usually only has a honeycomb body inside the energy absorbing tube, and no other structures are added. As a result, when a collision occurs, it is impossible to ensure that the energy absorbing tube and the honeycomb body undergo orderly and controllable plastic deformation along the longitudinal impact direction, and the vertical and lateral load-bearing capacity of the entire anti-climber is often poor. Technical issues

[0005] The purpose of the present invention is to provide a hydraulic shear-guided anti-climber energy absorption device to at least overcome the technical problems of the existing crushing anti-climber, which is that it cannot ensure the orderly and controllable plastic deformation of the energy-absorbing tube and the honeycomb body along the longitudinal impact direction, and the anti-climber has poor vertical and lateral load-bearing capacity. Technical Solutions

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

[0007] A hydraulic shear-guided anti-climbing energy absorption device comprises an energy absorption tube, an anti-climbing portion, a first connecting portion, a plurality of partitions, and two guide plates, wherein the anti-climbing portion is provided at one end of the energy absorption tube, and the first connecting portion is provided at the other end of the energy absorption tube;

[0008] Along the axial direction of the energy absorbing tube, the plurality of partitions are sequentially arranged inside the energy absorbing tube to divide the interior of the energy absorbing tube into a plurality of first energy absorbing cavities, each of the plurality of first energy absorbing cavities being filled with a first honeycomb body;

[0009] Along the vertical direction of the energy absorbing tube, the two guide plates are symmetrically arranged in the energy absorbing tube;

[0010] The guide plate is arranged at an angle and has a relative connecting end and a free end. The connecting end is connected to the anti-climbing part, and the free end extends to the outside of the first connecting part after passing through the multiple partitions in sequence. The guide plate and the first connecting part are slidingly fitted, and the connecting end is closer to the axis of the energy absorbing tube than the free end.

[0011] In some possible embodiments, the yield strength of the first honeycomb bodies filled in the plurality of first energy absorbing cavities increases successively along the anti-climbing portion to the first connecting portion.

[0012] In some possible embodiments, a crush tube is further included, wherein the crush tube is disposed inside the energy absorbing tube and between the two guide plates, and the axis of the crush tube coincides with the axis of the energy absorbing tube;

[0013] One end of the crush tube is connected to the anti-climbing part, and the other end of the crush tube is connected to the first connecting part after passing through the multiple partitions in sequence. A second energy absorption cavity is provided inside the crush tube, and the second energy absorption cavity is filled with a second honeycomb body.

[0014] In some possible embodiments, the device further includes a second connecting portion and a hydraulic energy absorbing assembly, wherein the second connecting portion is disposed opposite to the first connecting portion, and the hydraulic energy absorbing assembly is disposed between the first connecting portion and the second connecting portion;

[0015] The hydraulic energy absorbing assembly includes a cylinder, a solenoid valve, a piston, and a piston rod, one end of the cylinder is connected to the second connecting portion, and the other end of the cylinder faces the first connecting portion;

[0016] An oil outlet is provided at one end of the cylinder body connected to the second connecting portion, and the solenoid valve is provided at the oil outlet to control the on / off of the oil outlet;

[0017] The piston is arranged inside the cylinder body, and a sealing cavity is provided between the piston and the oil outlet. The sealing cavity is filled with hydraulic oil and communicates with the oil outlet;

[0018] One end of the piston rod is connected to the side of the piston away from the oil outlet, and the other end of the piston rod extends into the inside of the crush tube after passing through the cylinder body. The end of the piston rod extending into the crush tube contacts the second honeycomb body.

[0019] In some possible embodiments, the outer diameter of the cylinder is equal to the inner diameter of the crush tube, and the end of the cylinder away from the second connecting portion passes through the first connecting portion and extends into the interior of the crush tube;

[0020] A buffer block is provided on a side of the second connection portion facing the first connection portion, and the buffer block is provided around the cylinder body.

[0021] In some possible embodiments, there are multiple second honeycomb bodies, and the multiple second honeycomb bodies are sequentially overlapped along the axial direction of the crush tube;

[0022] A gap is provided between the second honeycomb body close to the anti-climbing portion and the anti-climbing portion.

[0023] In some possible embodiments, the yield strength of the plurality of second honeycomb bodies increases sequentially from the anti-climbing portion to the first connecting portion.

[0024] In some possible embodiments, a first mounting hole is provided on the first connecting portion, and a second mounting hole is provided on the second connecting portion.

[0025] In some possible embodiments, at least two side edges of the partition are provided with convex edges, and the side walls of the energy absorbing tube are provided with accommodating grooves corresponding one-to-one to the convex edges on the partition. Beneficial effects

[0026] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0027] 1. The hydraulic shear-guided anti-climbing energy absorption device provided by the present invention realizes the purpose of using multiple first honeycomb bodies in series by sequentially arranging multiple partitions along the longitudinal impact direction inside the energy absorption tube, so as to divide the interior of the energy absorption tube into multiple first energy absorption cavities, and sequentially filling the multiple first energy absorption cavities with first honeycomb bodies with successively increasing yield strengths, thereby achieving the purpose of using multiple first honeycomb bodies in combination, greatly improving the energy absorption capacity of the anti-climbing energy absorption device, and during the energy absorption process, the first honeycomb bodies in the multiple first energy absorption cavities can be independently crushed and deformed, effectively preventing the first honeycomb bodies in different first energy absorption cavities from being embedded in each other or crushed and deformed at the same time, thereby causing the energy absorption effect to deteriorate, and making the crushing deformation process of the first honeycomb body more stable and orderly.

[0028] 2. The present invention further adds two inclined guide plates in the energy absorbing tube. On the one hand, the two guide plates can play a good limiting and guiding role, so that the first honeycomb bodies in the multiple first energy absorbing cavities inside the energy absorbing tube can undergo orderly and controllable plastic deformation along the longitudinal impact direction. At the same time, the two guide plates can further separate the first honeycomb bodies in the first energy absorbing cavity into a structure with a trapezoidal cross-section, so that the first honeycomb bodies in each first energy absorbing cavity can be fully crushed and deformed, thereby maximizing the energy absorption capacity of each first honeycomb body. On the other hand, the two guide plates can effectively improve the vertical and lateral load-bearing capacity of the entire anti-climbing energy absorbing device, thereby further improving the reliability of the anti-climbing energy absorbing device when installed on a train.

[0029] 3. The present invention further adds a crush tube inside the energy absorbing tube and fills the crush tube with a second honeycomb body, thereby cooperating with the first honeycomb bodies in multiple first energy absorbing cavities to absorb collision energy. On this basis, by adding a hydraulic energy absorbing component, the viscous damping effect of the hydraulic oil can be used to convert the collision energy into the pressure and heat energy of the hydraulic oil, so that the anti-climbing energy absorbing device has a composite energy absorption capacity, further improving the energy absorption capacity of the anti-climbing energy absorbing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of a hydraulic shear-guided anti-climbing energy absorption device provided in an embodiment of the present invention;

[0031] FIG2 is a schematic diagram of the explosion structure of the anti-climbing energy absorption device shown in FIG1 ;

[0032] FIG3 is a cross-sectional view of the anti-climbing energy absorption device shown in FIG1 ;

[0033] FIG4 is a schematic structural diagram of the interior of the anti-climbing energy absorption device shown in FIG1 with the first honeycomb body removed;

[0034] FIG5 is a schematic structural diagram of the anti-climbing energy absorption device shown in FIG1 when installed on a train chassis.

[0035] Icons: 10-energy absorbing tube, 11-first energy absorbing chamber, 12-accommodating groove, 20-anti-climbing part, 30-first connecting part, 40-partition, 41-convex edge, 50-guide plate, 51-connecting end, 52-free end, 60-first honeycomb body, 70-crush tube, 71-second energy absorbing chamber, 80-second honeycomb body, 90-second connecting part, 100-hydraulic energy absorbing assembly, 101-cylinder body, 102-solenoid valve, 103-piston, 104-piston rod, 105-oil outlet, 106-sealing chamber, 110-buffer block, 200-train underframe, 210-first mounting seat, 220-second mounting seat, 230-shear bolt, 240-fastening bolt. Best Mode for Carrying Out the Invention

[0036] The best mode for carrying out the present invention is the same as the embodiment of the present invention described below. Modes for Carrying Out the Invention

[0037] Referring to Figures 1 to 5 , this embodiment provides a hydraulic shear-guided anti-climber energy absorption device that at least overcomes the technical issues of existing crush-type anti-climbers, such as the inability to ensure orderly and controllable plastic deformation of the energy-absorbing tube 10 and the honeycomb body along the longitudinal impact direction, and the poor vertical and lateral load-bearing capacity of the anti-climber. It should be noted that the terms "longitudinal," "vertical," and "lateral" in this embodiment refer to the directions indicated by the arrows in Figure 1 and are not further elaborated upon here.

[0038] Specifically, the anti-climbing energy absorption device includes an energy absorbing tube 10 , an anti-climbing portion 20 , a first connecting portion 30 , a plurality of partitions 40 and two guide plates 50 .

[0039] In this embodiment, in combination with the contents shown in Figures 1 and 2, the energy absorbing tube 10 adopts a conventional thin-walled metal tube, and the cross-section of the energy absorbing tube 10 can be but is not limited to a rectangle. That is to say, the energy absorbing tube 10 can be a thin-walled metal square tube. At this time, the anti-climbing portion 20 for realizing the anti-climbing function is arranged at one end of the energy absorbing tube 10. Specifically, the anti-climbing portion 20 includes anti-climbing teeth arranged on the side away from the energy absorbing tube 10. In actual application, when two trains collide, the anti-climbing portions 20 of the anti-climbing energy absorbing devices respectively arranged on the two trains can engage with each other through the anti-climbing teeth, thereby realizing the anti-climbing function.

[0040] Correspondingly, the first connecting part 30 for installing the anti-climbing energy absorption device on the train is arranged at the other end of the energy absorbing tube 10. That is, as shown in Figure 1, the anti-climbing part 20 and the first connecting part 30 are respectively arranged at the opposite ends of the energy absorbing tube 10, and in order to facilitate the installation of the first connecting part 30, a first mounting hole is opened on the first connecting part 30. Furthermore, first mounting holes can be opened at the four corners of the first connecting part 30 to improve the stability of the first connecting part 30 after being installed on the train.

[0041] At this time, in combination with the contents shown in Figures 3 and 4, along the axial direction of the energy absorbing tube 10 (that is, the longitudinal impact direction), multiple partitions 40 are sequentially arranged inside the energy absorbing tube 10, so that the interior of the energy absorbing tube 10 is divided into multiple independent first energy absorbing cavities 11 by multiple partitions 40, and the multiple first energy absorbing cavities 11 are all filled with the first honeycomb body 60. For example, in this embodiment, four partitions 40 are arranged in the energy absorbing tube 10 to divide the interior of the energy absorbing tube 10 into five first energy absorbing cavities 11.

[0042] It can be understood that the first honeycomb body 60 filled in the first energy absorbing cavity 11 can be but is not limited to an aluminum honeycomb, and in actual implementation, the axis of the holes on the first honeycomb body 60 should be parallel to the axis of the energy absorbing tube 10, so that when a collision occurs, the first honeycomb body 60 can be smoothly crushed and deformed along the longitudinal impact direction.

[0043] It should be noted that in order to arrange and fix multiple partitions 40 in sequence inside the energy absorbing tube 10, as shown in Figure 2, in actual implementation, a flange 41 can be provided on at least two side edges of the partition 40. At this time, the energy absorbing tube 10 and the partition 40 have side walls corresponding to the sides with the flange 41 provided thereon, and a receiving groove 12 corresponding one to one to the flange 41 on the partition 40 is opened. With such a setting, when the partition 40 is actually installed, it is only necessary to insert the flanges 41 on both sides of the partition 40 into the receiving grooves 12 on the corresponding side walls of the energy absorbing tube 10 respectively, and then the flange 41 of the partition 40 can be welded and fixed to the corresponding side walls of the energy absorbing tube 10, thereby realizing reliable fixation of the partition 40.

[0044] At the same time, along the vertical direction of the energy absorbing tube 10, two guide plates 50 are symmetrically arranged in the energy absorbing tube 10, and for a single guide plate 50, the guide plate 50 is arranged at an angle, and the guide plate 50 has a relative connecting end 51 and a free end 52, wherein, as shown in Figure 3, the connecting end 51 of the guide plate 50 is connected to the anti-climbing part 20, and the free end 52 of the guide plate 50 passes through multiple partitions 40 in sequence and extends to the outside of the first connecting part 30. At this time, the guide plate 50 and the first connecting part 30 are slidably fitted so that the guide plate 50 can slide relative to the first connecting part 30, and the connecting end 51 of the guide plate 50 is closer to the axis of the energy absorbing tube 10 than the free end 52. That is, along the anti-climbing part 20 to the first connecting part 30, the guide plate 50 gradually moves away from the axis of the energy absorbing tube 10.

[0045] It can be understood that in actual implementation, the width of the guide plate 50 is equal to the width of the inner cavity of the energy absorbing tube 10. At this time, as shown in Figure 4, for the single first energy absorbing cavity 11 separated by multiple partitions 40, along the vertical direction of the energy absorbing tube 10, the single first energy absorbing cavity 11 is further divided into three chambers of upper, middle and lower parts by two guide plates 50. At this time, as shown in Figure 2, the first honeycomb body 60 filled in the single first energy absorbing cavity 11 is further divided into three parts under the action of the two guide plates 50. The three separated parts of the first honeycomb body 60 are sequentially filled in the upper, middle and lower chambers constituting the first energy absorbing cavity 11, and the cross-section of each part of the first honeycomb body 60 is trapezoidal.

[0046] In this way, by arranging multiple partitions 40 inside the energy absorbing tube 10 to separate multiple first energy absorbing cavities 11, and further adding two inclined guide plates 50, in actual application, once a train collides and the anti-climbing energy absorbing device is subjected to a longitudinal impact, the anti-climbing part 20 can stably move toward the direction of the first connecting part 30 along the longitudinal impact direction under the limiting and guiding action of the two guide plates 50. In this process, along the anti-climbing part 20 to the first connecting part 30, the first honeycomb bodies 60 filled in the multiple first energy absorbing cavities 11 will be crushed and deformed step by step, thereby achieving the step-by-step absorption of collision energy.

[0047] It should be noted that the anti-climbing energy absorption device provided in this embodiment achieves the purpose of combining and using multiple first energy absorption cavities 11 by adding multiple partitions 40 inside the energy absorption tube 10, and filling each first energy absorption cavity 11 with an independent first honeycomb body 60, thereby achieving the purpose of combining and using multiple first honeycomb bodies 60 in series, so that the energy absorption capacity of the anti-climbing energy absorption device is greatly improved. Due to the presence of the partitions 40, the first honeycomb bodies 60 in the multiple first energy absorption cavities 11 can be crushed step by step, and the first honeycomb bodies 60 in different first energy absorption cavities 11 will not be embedded in each other, thereby ensuring that the first honeycomb bodies 60 in each first energy absorption cavity 11 have good energy absorption effect, and can effectively prevent the first honeycomb bodies 60 in different first energy absorption cavities 11 from being crushed and deformed at the same time, thereby avoiding the instability and failure of the anti-climbing energy absorption device, and thus achieving efficient absorption of collision energy.

[0048] At the same time, by adding two inclined guide plates 50, while playing a reliable limiting and guiding role, so that the first honeycomb bodies 60 in multiple first energy absorption cavities 11 can undergo orderly and controllable plastic deformation along the longitudinal impact direction, the two guide plates 50 can be used to further separate the first honeycomb bodies 60 in each first energy absorption cavity 11 into a structure with a trapezoidal cross-section. Based on the longitudinal impact direction, the cross-section of the part of the first honeycomb body 60 in a single first energy absorption cavity 11 separated by the two guide plates 50 changes sequentially, so that the first honeycomb body 60 in each first energy absorption cavity 11 can be fully crushed and deformed, thereby maximizing the energy absorption capacity of each first honeycomb body 60, and at the same time, it can improve the vertical and lateral load-bearing capacity of the entire anti-climbing energy absorption device, further improving the reliability of the anti-climbing energy absorption device when installed on a train.

[0049] In addition, during actual implementation, the yield strength of the first honeycomb body 60 filled in the multiple first energy absorption cavities 11 increases successively along the anti-climbing portion 20 to the first connecting portion 30. Specifically, the energy absorption capacity of the honeycomb body depends on the yield strength of the honeycomb body. The greater the yield strength of the honeycomb body, the stronger the energy absorption capacity of the honeycomb body. At this time, the energy absorption capacity of the first honeycomb body 60 in the first energy absorption cavity 11 close to the anti-climbing portion 20 is the smallest, and the energy absorption capacity of the first honeycomb body 60 in the first energy absorption cavity 11 away from the anti-climbing portion 20 is the largest. When a collision occurs, the first honeycomb body 60 with gradually increasing energy absorption capacity is used to absorb the collision energy, which can make the entire energy absorption process more stable and reliable.

[0050] On this basis, in order to further enhance the energy absorption capacity of the anti-climbing energy absorption device provided in this embodiment, the anti-climbing energy absorption device provided in this embodiment further includes a crush tube 70 .

[0051] In this embodiment, in combination with the contents shown in Figures 2 to 4, the crush tube 70 is arranged inside the energy absorbing tube 10 and is located between the two guide plates 50, and the axis of the crush tube 70 coincides with the axis of the energy absorbing tube 10. It can be understood that the crush tube 70 can be but is not limited to a thin-walled metal round tube. At this time, one end of the crush tube 70 is connected to the anti-climbing part 20, and the other end of the crush tube 70 is connected to the first connecting part 30 after passing through multiple partitions 40 in sequence, and a second energy absorbing cavity 71 is provided inside the crush tube 70, and the second energy absorbing cavity 71 is filled with a second honeycomb body 80.

[0052] It will be appreciated that when the crush tube 70 passes through multiple baffles 40, the connection between the crush tube 70 and a single baffle 40 is a sliding fit, allowing the crush tube 70 to slide relative to the baffle 40, thereby allowing the crush tube 70 to smoothly crush and deform along the longitudinal impact direction. Furthermore, the second honeycomb body 80 filling the second energy-absorbing cavity 71 may also be, but is not limited to, an aluminum honeycomb. In actual implementation, the axis of the holes in the second honeycomb body 80 should be parallel to the axis of the energy-absorbing tube 10, so that when a collision occurs, the second honeycomb body 80 can smoothly crush and deform along the longitudinal impact direction.

[0053] With such an arrangement, when a collision occurs, in addition to the energy absorbing tube 10 and the first honeycomb body 60 filled in the multiple first energy absorbing cavities 11 being able to be crushed and deformed to absorb the collision energy, the crush tube 70 and the second honeycomb body 80 filled in the second energy absorbing cavity 71 can also be crushed and deformed to absorb the collision energy, thereby improving the energy absorption capacity of the entire anti-climbing energy absorption device, and adding a crush tube 70 inside the energy absorbing tube 10 can further improve the vertical and lateral load-bearing capacity of the anti-climbing energy absorption device when no collision occurs.

[0054] It is understood that, as shown in FIG3 , in actual implementation, multiple second honeycomb bodies 80 can be provided within the second energy-absorbing cavity 71, with the multiple second honeycomb bodies 80 being sequentially overlapped along the axial direction of the crush tube 70. For example, in this embodiment, four second honeycomb bodies 80 are filled within the second energy-absorbing cavity 71. In this case, a gap is provided between the second honeycomb body 80 near the anti-climbing portion 20 and the anti-climbing portion 20. This ensures that the second honeycomb body 80 near the anti-climbing portion 20 within the second energy-absorbing cavity 71 begins to crush and deform only after the energy-absorbing tube 10 and the corresponding first honeycomb body 60 near the anti-climbing portion 20 have been crushed and deformed to a certain extent, thereby improving reliability in absorbing collision energy.

[0055] Secondly, for the multiple second honeycomb bodies 80 filled in the second energy absorption cavity 71, the yield strength of the multiple second honeycomb bodies 80 also increases successively along the anti-creep portion 20 to the first connecting portion 30, so that the energy absorption capacity of the multiple second honeycomb bodies 80 filled in the second energy absorption cavity 71 also increases successively along the longitudinal impact direction, which can further make the entire energy absorption process more stable and reliable.

[0056] On the other hand, to ensure the anti-climbing energy absorption device possesses a composite energy absorption capability, the anti-climbing energy absorption device provided in this embodiment further includes a second connecting portion 90 and a hydraulic energy absorption assembly 100. Referring to Figures 1 to 4 , the second connecting portion 90 is positioned opposite the first connecting portion 30 and also includes second mounting holes to facilitate mounting the second connecting portion 90 on the train. Furthermore, second mounting holes can be provided at the four corners of the second connecting portion 90 to enhance the stability of the second connecting portion 90 once mounted on the train. In this case, the first connecting portion 30 is positioned between the anti-climbing portion 20 and the second connecting portion 90, while the hydraulic energy absorption assembly 100 is positioned between the first connecting portion 30 and the second connecting portion 90.

[0057] Specifically, as shown in Figure 3, the hydraulic energy absorbing assembly 100 includes a cylinder 101, a solenoid valve 102, a piston 103, and a piston rod 104. One end of the cylinder 101 is connected to the second connecting portion 90, and the other end of the cylinder 101 faces the first connecting portion 30. Preferably, the outer diameter of the cylinder 101 is equal to the inner diameter of the crush tube 70, and the end of the cylinder 101 away from the second connecting portion 90 passes through the first connecting portion 30 and extends into the interior of the crush tube 70. At this point, the cylinder 101 and the crush tube 70 are in sliding engagement, allowing the cylinder 101 to slide relative to the crush tube 70.

[0058] Secondly, an oil outlet 105 is provided at one end of the cylinder body 101 connected to the second connecting portion 90. A solenoid valve 102 is provided at the oil outlet 105 to control the on / off state of the oil outlet 105. The piston 103 is provided inside the cylinder body 101. A sealed chamber 106 is provided between the piston 103 and the oil outlet 105. The sealed chamber 106 is filled with hydraulic oil and is in communication with the oil outlet 105. At the same time, one end of the piston rod 104 is connected to the side of the piston 103 facing away from the oil outlet 105. The other end of the piston rod 104 extends through the cylinder body 101 into the crush tube 70. The end of the piston rod 104 extending into the crush tube 70 contacts the second honeycomb body 80. Preferably, the outer diameter of the end of the piston rod 104 extending into the crush tube 70 is equal to the inner diameter of the crush tube 70, so that the piston rod 104 can fully contact the end surface of the second honeycomb body 80.

[0059] Based on this setting, in actual application, a pressure threshold for opening the solenoid valve 102 can be preset for the solenoid valve 102. Once a collision occurs and the second honeycomb body 80 filled in the second energy absorbing chamber 71 begins to collapse and deform, the second honeycomb body 80 in contact with the piston rod 104 will transmit an extrusion force to the piston rod 104. At this time, the extrusion force acting on the piston rod 104 is transmitted to the piston 103, so as to squeeze the hydraulic oil in the sealing chamber 106 through the piston 103. As the second honeycomb body 80 filled in the second energy absorbing chamber 71 continues to be crushed and deformed, the second honeycomb body 80 acting on the second energy absorbing chamber 71 is continuously crushed and deformed. The extrusion pressure on the piston rod 104 will also gradually increase. At this time, the pressure of the hydraulic oil in the sealed chamber 106 will also continue to increase. At a certain moment, when the pressure of the hydraulic oil in the sealed chamber 106 reaches the pressure threshold preset by the solenoid valve 102, the solenoid valve 102 opens, and the hydraulic oil in the sealed chamber 106 will flow out from the oil outlet 105. In this process, through the viscous damping effect of the hydraulic oil in the sealed chamber 106 and as the hydraulic oil flows, part of the collision energy will be converted into the pressure and heat energy of the hydraulic oil, thereby realizing the absorption of the collision energy by the hydraulic energy absorption component 100.

[0060] In addition, referring to Figures 1 to 3, in actual implementation, a buffer block 110 can be provided on the side of the second connection part 90 facing the first connection part 30. The buffer block 110 can be, but is not limited to, made of rubber, and the buffer block 110 is roughly annular and is provided around the cylinder body 101. By adding the buffer block 110, when the crushing energy absorbing structure formed by the energy absorbing tube 10 fails and the first connection part 30 moves toward the second connection part 90 until it abuts against the second connection part 90, the buffer block 110 can play a good buffering role.

[0061] In order to more clearly and intuitively understand the anti-climbing energy absorption device provided by this embodiment, the working principle of the anti-climbing energy absorption device will be further explained below in combination with specific application scenarios.

[0062] In actual application, the anti-climbing energy absorption device is first installed on the train chassis 200 at the end of the train. Specifically, as shown in Figure 5, a first mounting seat 210 and a second mounting seat 220 are sequentially arranged on the train chassis 200 along the longitudinal impact direction, wherein the first mounting seat 210 is fixed to the train chassis 200 by shear bolts 230, and the second mounting seat 220 is fixed to the train chassis 200 by conventional fastening bolts 240, and then the first connecting part 30 is fixed to the first mounting seat 210 through the first mounting hole by fasteners such as bolts, and accordingly, the second connecting part 90 is fixed to the second mounting seat 220 through the second mounting hole by fasteners such as bolts. At this time, the side of the anti-climbing part 20 with anti-climbing teeth faces the outside of the train end.

[0063] When two trains collide, the anti-climbing parts 20 of the anti-climbing energy absorbing devices on the two trains engage with each other through the anti-climbing teeth, thereby realizing the anti-climbing function, and then the anti-climbing energy absorbing devices begin to absorb energy step by step.

[0064] Specifically, for the anti-climbing energy absorption device on a single train, the longitudinal impact force generated during the collision acts on the anti-climbing portion 20 to force the anti-climbing portion 20 to move in the direction of the first connecting portion 30. At this time, along the longitudinal impact direction, the energy absorbing tube 10, the crushing tube 70 and the first honeycomb body 60 in the multiple first energy absorbing cavities 11 begin to crush and deform step by step, thereby absorbing the collision energy.

[0065] When the anti-climbing portion 20 moves toward the direction of the first connecting portion 30 and contacts the second honeycomb body 80 near the anti-climbing portion 20 in the second energy absorbing chamber 71, the multiple second honeycomb bodies 80 in the second energy absorbing chamber 71 will also begin to be crushed and deformed step by step, thereby further absorbing the collision energy. During this process, the second honeycomb body 80 in contact with the piston rod 104 will transmit the extrusion force to the piston rod 104, so as to squeeze the piston 103 inside the cylinder body 101 toward the oil outlet 105 through the piston rod 104. At this time, the pressure of the hydraulic oil in the sealing chamber 106 continues to increase. When the pressure of the hydraulic oil in the sealing chamber 106 reaches the pressure threshold preset by the solenoid valve 102, the solenoid valve 102 opens, and the hydraulic oil in the sealing chamber 106 will begin to flow out from the oil outlet 105. During this process, part of the collision energy will be converted into the pressure and heat energy of the hydraulic oil, thereby realizing the absorption of the collision energy by the hydraulic energy absorbing component 100.

[0066] As the collision continues, when the longitudinal impact force generated by the collision is greater than the shear force of the shear bolt 230 used to connect the first mounting seat 210 and the train underframe 200, the shear bolt 230 will break. Thereafter, under the action of the longitudinal impact force, the first mounting seat 210 will drive the first connecting part 30 to move toward the direction of the second connecting part 90. During this process, the cylinder body 101 will slide inside the crushing tube 70 relative to the crushing tube 70, and the piston rod 104 continues to squeeze the piston 103 inside the cylinder body 101, so that the hydraulic oil in the sealing chamber 106 continues to be pressurized and continues to flow out from the oil outlet 105, so as to continue to effectively absorb the collision energy until the first connecting part 30 moves to counteract the buffer block 110 provided on the second connecting part 90, so as to play a good buffering role through the buffer block 110.

[0067] In summary, the anti-climbing energy absorption device provided in this embodiment realizes the purpose of combining and using multiple first honeycomb bodies 60 in series by sequentially arranging multiple partitions 40 along the longitudinal impact direction inside the energy absorption tube 10, so as to divide the interior of the energy absorption tube 10 into multiple first energy absorption chambers 11, and sequentially filling the multiple first energy absorption chambers 11 with first honeycomb bodies 60 with successively increasing yield strengths, thereby greatly improving the energy absorption capacity of the anti-climbing energy absorption device. In the energy absorption process, the first honeycomb bodies 60 in the multiple first energy absorption chambers 11 can be independently crushed and deformed, effectively preventing the first honeycomb bodies 60 in different first energy absorption chambers 11 from being embedded in each other or crushed and deformed at the same time, thereby causing the energy absorption effect to deteriorate, and making the crushing and deformation process of the first honeycomb body 60 more stable and orderly.

[0068] Secondly, by further adding two inclined guide plates 50 in the energy absorbing tube 10, on the one hand, the two guide plates 50 can play a good limiting and guiding role, so that the first honeycomb bodies 60 in the multiple first energy absorbing cavities 11 inside the energy absorbing tube 10 can undergo orderly and controllable plastic deformation along the longitudinal impact direction. At the same time, the two guide plates 50 can further separate the first honeycomb bodies 60 in the first energy absorbing cavity 11 into a structure with a trapezoidal cross-section, so that the first honeycomb bodies 60 in each first energy absorbing cavity 11 can be fully crushed and deformed, thereby maximizing the energy absorption capacity of each first honeycomb body 60. On the other hand, the two guide plates 50 can effectively improve the vertical and lateral load-bearing capacity of the entire anti-climbing energy absorption device, thereby further improving the reliability of the anti-climbing energy absorption device when installed on a train.

[0069] Furthermore, by further adding a crush tube 70 within the energy absorbing tube 10 and filling it with a second honeycomb body 80, the first honeycomb bodies 60 within the multiple first energy absorbing cavities 11 can be used to jointly absorb collision energy. Furthermore, by adding a hydraulic energy absorbing assembly 100, the viscous damping effect of the hydraulic oil can be used to convert collision energy into hydraulic oil pressure and heat energy, giving the anti-climbing energy absorbing device a composite energy absorption capability, further enhancing its energy absorption capacity. Furthermore, in actual application, if the crushing energy absorption structure formed by the energy absorbing tube 10 fails, the anti-climbing energy absorbing device can still rely on the hydraulic energy absorbing assembly 100 to continue absorbing collision energy, thereby avoiding failure of the entire anti-climbing energy absorbing device and further enhancing its reliability in actual application. Industrial Applicability

[0070] It can be seen from the embodiments described above that the present application has industrial applicability. Sequence Listing Free Content

[0071] 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. A hydraulic shear-guided anti-climbing energy absorption device, characterized in that: It comprises an energy absorbing tube, an anti-climbing part, a first connecting part, a plurality of partitions and two guide plates, wherein the anti-climbing part is arranged at one end of the energy absorbing tube, and the first connecting part is arranged at the other end of the energy absorbing tube; Along the axial direction of the energy absorbing tube, the plurality of partitions are sequentially arranged inside the energy absorbing tube to divide the inside of the energy absorbing tube into a plurality of first energy absorbing cavities, and the plurality of first energy absorbing cavities are all filled with a first honeycomb body; Along the vertical direction of the energy absorbing tube, the two guide plates are symmetrically arranged in the energy absorbing tube; The guide plate is arranged at an angle and has a relative connecting end and a free end, the connecting end is connected to the anti-climbing part, and the free end extends to the outside of the first connecting part after passing through the multiple partitions in sequence. The guide plate and the first connecting part are slidingly matched, and the connecting end is closer to the axis of the energy absorbing tube than the free end.

2. The hydraulic shearing guided anti-climbing energy absorption device according to claim 1 is characterized in that: Along the anti-climbing portion to the first connecting portion, the yield strength of the first honeycomb body filled in the plurality of first energy absorbing cavities increases successively.

3. The hydraulic shearing guided anti-climbing energy absorption device according to claim 1 is characterized in that: It also includes a crush tube, which is arranged inside the energy absorbing tube and between the two guide plates, and the axis of the crush tube coincides with the axis of the energy absorbing tube; One end of the crush tube is connected to the anti-climbing part, and the other end of the crush tube passes through the multiple partitions in sequence and is connected to the first connecting part. A second energy absorption cavity is arranged inside the crush tube, and the second energy absorption cavity is filled with a second honeycomb body.

4. The hydraulic shearing guided anti-climbing energy absorption device according to claim 3 is characterized in that: It also includes a second connection part and a hydraulic energy absorbing assembly, wherein the second connection part is arranged opposite to the first connection part, and the hydraulic energy absorbing assembly is arranged between the first connection part and the second connection part; The hydraulic energy absorbing assembly comprises a cylinder, a solenoid valve, a piston and a piston rod, one end of the cylinder is connected to the second connecting portion, and the other end of the cylinder faces the first connecting portion; An oil outlet is provided at one end of the cylinder body connected to the second connecting portion, and the solenoid valve is provided at the oil outlet to control the on / off of the oil outlet; The piston is arranged inside the cylinder body, and a sealing cavity is arranged between the piston and the oil outlet, the sealing cavity is filled with hydraulic oil and is communicated with the oil outlet; One end of the piston rod is connected to the side of the piston away from the oil outlet, and the other end of the piston rod extends into the crush tube after passing through the cylinder body. The end of the piston rod extending into the crush tube contacts the second honeycomb body.

5. The hydraulic shearing guided anti-climbing energy absorption device according to claim 4 is characterized in that: The outer diameter of the cylinder is equal to the inner diameter of the crush tube, and one end of the cylinder away from the second connecting portion passes through the first connecting portion and then extends to the inside of the crush tube; A buffer block is disposed on a side of the second connection portion facing the first connection portion, and the buffer block is disposed around the cylinder body.

6. The hydraulic shearing guided anti-climbing energy absorption device according to claim 3 is characterized in that: The number of the second honeycomb bodies is multiple, and the multiple second honeycomb bodies are sequentially overlapped and arranged along the axial direction of the crush tube; A gap is provided between the second honeycomb body close to the anti-climbing portion and the anti-climbing portion.

7. The hydraulic shearing guided anti-climbing energy absorption device according to claim 6 is characterized in that: The yield strengths of the second honeycomb bodies increase in sequence along the anti-climbing portion to the first connecting portion.

8. The hydraulic shearing guided anti-climbing energy absorption device according to claim 4 is characterized in that: The first connecting portion is provided with a first mounting hole, and the second connecting portion is provided with a second mounting hole.

9. The hydraulic shearing guided anti-climbing energy absorption device according to claim 1 is characterized in that: At least two side edges of the partition are provided with convex edges, and the side walls of the energy absorbing tube are provided with accommodating grooves corresponding one to one with the convex edges on the partition.

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