Anti-climbing device based on extrusion energy absorption structure

Abstract

This application provides an anti-climb device based on a compression-type energy-absorbing structure, including coaxially arranged anti-climb teeth, a cross-shaped energy-absorbing guide rod, and a mounting plate. The anti-climb teeth are connected to the cross-shaped energy-absorbing guide rod and are respectively placed at both ends of the mounting plate. The cross-shaped energy-absorbing guide rod connects the anti-climb teeth and the mounting plate and is provided with positioning pins to fix the cross-shaped energy-absorbing guide rod. It also includes eight sets of energy-absorbing grooves distributed in a cross shape, and the inlet contact position of the energy-absorbing grooves is rounded. The mounting plate has a right-angle adapter block, cylindrical pins, and a base. The vertical and horizontal arms of the right-angle adapter block are respectively provided with screw mounting holes at both ends, which are connected to the base by screws and are centrally symmetrically distributed. At the same time, bolt holes are provided on its end face for connection to the vehicle body by bolts. Furthermore, the vertical and horizontal arms of the right-angle adapter block are provided with multiple equidistant cylindrical pin mounting holes, and the cylindrical pins are inserted into the mounting holes. The anti-climb device based on a compression-type energy-absorbing structure disclosed in this utility model has a simple structure, light weight, can absorb a large amount of energy, has small buffer force fluctuations, low peak force, and a smooth collision compression process.

Description

Technical Field

[0001] This utility model relates to the field of vehicle collision energy absorption technology, and in particular to an anti-climb device based on a compression energy absorption structure. Background Technology

[0002] With the rapid development and widespread adoption of urban rail transit, train operation safety has increasingly become a focus of public and governmental attention. Especially in high-density urban rail networks, the high risk of train collisions and the severe damage they cause have prompted engineers and researchers to seek more efficient and reliable safety protection solutions. As an important passive safety protection device, anti-creep devices play a crucial role in controlling the collision force during a train collision and preventing vehicles from "climbing" each other during a collision. Designing high-performance anti-creep devices is essential for improving the passive safety of urban rail vehicles.

[0003] Common types of known anti-creep devices include expansion tube anti-creep devices, whose typical structure includes an expansion tube, a pressure tube, anti-creep teeth, and a mounting base. Its operating mechanism is as follows: when a rail vehicle collides with another vehicle, the longitudinal compressive load is transmitted to the pressure tube via the anti-creep teeth, forcing the pressure tube to displace axially along the expansion tube. This, in turn, drives the expansion tube to undergo controllable radial plastic deformation, achieving efficient dissipation of collision kinetic energy through the tube expansion process.

[0004] The aforementioned expansion tube type anti-climb device has a simple structure and stable absorption capacity, but it still has certain shortcomings. Specifically, the expansion tube may undergo asymmetric deformation during compression (such as local wrinkling rather than uniform radial expansion), resulting in uneven energy absorption and low energy absorption efficiency. Utility Model Content

[0005] Therefore, it is necessary to provide an anti-climb device based on a compression-type energy-absorbing structure to address the aforementioned technical problems.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An anti-climb device based on a compression-type energy-absorbing structure is characterized by comprising coaxially arranged anti-climb teeth, a cross-shaped energy-absorbing guide rod, and a mounting plate;

[0008] The anti-climb teeth are connected to the cross-shaped energy-absorbing guide rod, and the mounting plate is placed at both ends respectively;

[0009] The cross-shaped energy-absorbing guide rod connects the anti-climb teeth and the mounting plate. It has positioning pins on both sides to fix the cross-shaped energy-absorbing guide rod and includes eight sets of energy-absorbing grooves arranged in a cross shape. The inlet contact position of the energy-absorbing groove is rounded. At the same time, the surface of the energy-absorbing groove is covered with a rubber sleeve.

[0010] The mounting plate has a right-angle adapter block, cylindrical pins, and a base plate. The vertical and horizontal arms of the right-angle adapter block are respectively provided with screw mounting holes at both ends, which are connected to the base by screws and are centrally symmetrically distributed. At the same time, bolt holes are provided on its end face, which are connected to the vehicle body by bolts. Furthermore, the vertical and horizontal arms of the right-angle adapter block are provided with multiple equidistant cylindrical pin mounting holes, and the cylindrical pins are inserted into the mounting holes.

[0011] Furthermore, the cross-shaped energy-absorbing guide rod has multiple long-stroke energy-absorbing grooves on its surface. These grooves cooperate with multiple equidistant cylindrical pins on the mounting plate to form multiple energy-absorbing units. During the collision, the cylindrical pins can squeeze the sidewalls of the energy-absorbing grooves, absorbing more impact energy through the plastic deformation of the material and the friction between the cylindrical pins and the grooves, thus achieving the purpose of buffering and energy absorption.

[0012] Furthermore, the right-angled adapter block of the mounting plate is connected to the base with screws to ensure proper assembly of the cylindrical pin. At the same time, the adapter block and the mounting base can be made of high-strength, high-density materials and lightweight aluminum alloy materials, respectively, to achieve the weight reduction of the anti-climb device while meeting the requirements of rigidity and strength.

[0013] Furthermore, the cross-shaped energy-absorbing guide rod has good guiding properties and can withstand the vertical and lateral loads generated during the collision to ensure the stability of the collision energy absorption process.

[0014] Furthermore, the inlet contact position of the energy absorption groove is rounded to avoid local stress concentration and reduce peak buffer force.

[0015] Furthermore, the locating pins of the cross-shaped energy-absorbing guide rod are located on both sides of the guide rod and are distributed opposite each other to fix the cross-shaped energy-absorbing guide rod; and during the collision, the locating pins can undergo shearing fracture.

[0016] Furthermore, the rubber sleeve of the cross-shaped energy-absorbing guide rod is placed on the surface of the limiting groove, which can effectively prevent dust and impurities from entering the limiting groove, avoid jamming of the moving mechanism, ensure the reliability of the energy-absorbing device in complex environments, and extend its service life.

[0017] Furthermore, in the event of a collision, the anti-climb teeth can engage with the anti-climb teeth attached to another rail vehicle to limit the relative height between the two vehicles during the collision.

[0018] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0019] 1. The energy-absorbing cylindrical pins and energy-absorbing grooves together constitute the core of the energy-absorbing component. When a collision occurs, these cylindrical pins will squeeze the sidewalls of the grooves, absorbing the impact energy through the plastic deformation of the material and the friction between the cylindrical pins and the grooves. This energy is transformed from the original impact energy into plastic deformation energy and friction energy, effectively achieving the purpose of buffering and energy absorption.

[0020] 2. The right-angle adapter block of the mounting plate is connected to the base with screws to ensure proper assembly of the cylindrical pin. At the same time, the adapter block and the mounting base can be made of high-strength, high-density materials and lightweight aluminum alloy materials, respectively, to achieve the weight reduction of the anti-climb device while meeting the rigidity and strength requirements.

[0021] 3. The cross-shaped energy-absorbing guide rod has good guiding properties and can withstand the vertical and lateral loads generated during the collision to ensure the stability of the collision energy absorption process.

[0022] 4. The rubber sleeve of the cross-shaped energy-absorbing guide rod is placed on the surface of the limiting groove, which can effectively prevent dust and impurities from entering the limiting groove, avoid jamming of the moving mechanism, ensure the reliability of the energy-absorbing device in complex environments, and extend its service life. Attached Figure Description

[0023] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0024] Figure 1 This is a schematic diagram of the overall structure of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0025] Figure 2 This is a top view of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0026] Figure 3 This is a cross-sectional view of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0027] Figure 4 This is a schematic diagram of the mounting base of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0028] Figure 5 This is a schematic diagram of the mounting plate of an anti-climb device based on an extrusion-type energy-absorbing structure according to this utility model;

[0029] Figure 6 This is a schematic diagram of a right-angled adapter block for an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0030] Figure 7 This is a schematic diagram of a cylindrical pin of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0031] Figure 8 This is a schematic diagram of the rubber sleeve of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0032] Figure 9 This is a schematic diagram of the positioning pin of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model;

[0033] Figure 10 This is a schematic diagram of the cross-shaped energy-absorbing guide rod of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model.

[0034] Figure 11 This is a schematic diagram of the anti-climb teeth of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model.

[0035] Figure 12 This is a cross-sectional perspective view of an anti-climb device based on a compression-type energy-absorbing structure according to this utility model.

[0036] In the diagram: 1. Anti-climb teeth; 2. Cross-shaped energy-absorbing guide rod; 3. Mounting base plate; 4. Right-angle adapter block; 5. First screw; 6. Second screw hole; 7. Cylindrical pin; 8. Cylindrical pin hole; 9. Energy-absorbing groove; 10. Bolt hole; 11. First screw hole; 12. Rubber sleeve; 13. Positioning pin. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments.

[0038] Figure 1 This is a schematic diagram of the overall structure of an exemplary anti-climb device based on a compression-type energy-absorbing structure disclosed in an embodiment of this utility model. Figure 2 for Figure 1 The image shows a top view of an anti-climb device based on a compression-type energy-absorbing structure. Figure 3 for Figure 1 The image shows a cross-sectional view of an anti-climb device based on a compression-type energy-absorbing structure from a rear-view angle.

[0039] exist Figures 1 to 3 In the embodiment shown, an anti-climb device based on a compression-type energy-absorbing structure includes coaxially arranged anti-climb teeth 1, a cross-shaped energy-absorbing guide rod 2, and a mounting plate.

[0040] The anti-climb teeth 1 are connected to the cross-shaped energy-absorbing guide rod 2, and the mounting plate is placed at both ends respectively;

[0041] The cross-shaped energy-absorbing guide rod 2 connects the anti-climbing tooth 1 and the mounting plate 3. It has positioning pins 13 on both sides to fix the cross-shaped energy-absorbing guide rod 2, and includes eight sets of energy-absorbing grooves 9 arranged in a cross shape. The inlet contact position of the energy-absorbing groove 9 is rounded. At the same time, the surface of the energy-absorbing groove 9 is covered with a rubber sleeve 12.

[0042] Mounting plate 3 has a right-angle adapter block 4, a cylindrical pin 7, and a base plate 3; the vertical and horizontal arms of the right-angle adapter block 4 are respectively provided with screw mounting holes 11, which are connected to the mounting base plate 3 by screws and are centrally symmetrically distributed. At the same time, the end face of the right-angle adapter block 4 is provided with bolt holes 10, which are connected to the vehicle body by bolts; and the vertical and horizontal arms of the right-angle adapter block 4 are provided with multiple equidistant cylindrical pin mounting holes 8, and the cylindrical pins 7 are inserted into the mounting holes.

[0043] The technical solution provided in this embodiment adopts a coaxially arranged anti-climb tooth, a cross-shaped energy-absorbing guide rod, and a mounting plate. The anti-climb tooth is connected to the cross-shaped energy-absorbing guide rod and is positioned at both ends of the mounting plate. The cross-shaped energy-absorbing guide rod connects the anti-climb tooth and the mounting plate, and has positioning pins on both sides to fix the cross-shaped energy-absorbing guide rod. It also includes eight sets of energy-absorbing grooves arranged in a cross shape, with rounded corners at the inlet contact positions of the energy-absorbing grooves. Additionally, the surface of the energy-absorbing grooves is covered with rubber sleeves. The mounting plate has a right-angle adapter block, cylindrical pins, and a base plate. The vertical and horizontal arms of the right-angle adapter block have screw mounting holes at both ends, which are connected to the base by screws and are centrally symmetrically distributed. The end face of the adapter block also has bolt holes for connection to the vehicle body via bolts. Furthermore, the vertical and horizontal arms of the right-angle adapter block have multiple equidistant cylindrical pin mounting holes, into which the cylindrical pins are inserted.

[0044] The implementation method is as follows: the cylindrical pins 7 and the energy-absorbing grooves 9 together constitute the core of the energy-absorbing component. When a collision occurs, these cylindrical pins 7 will squeeze the side wall of the groove and absorb the impact energy through the plastic deformation of the material and the friction between the cylindrical pins 7 and the groove. This energy is converted from the original impact energy into plastic deformation energy and friction energy.

[0045] In the embodiments of this utility model, to achieve lightweight anti-climb teeth while meeting rigidity and strength requirements, the manufacturing materials of each component can be reasonably selected. In the embodiments of this utility model, components such as anti-climb teeth 1, cross-shaped energy-absorbing guide rods 2, and energy-absorbing grooves 9 can all be made of 6061-T6 aluminum alloy; components such as mounting base plates 3 can be made of 6082-T6 aluminum alloy; and cylindrical pins 7 and right-angle adapter blocks 4 can be made of structural steel.

[0046] The anti-climb device based on a compression-type energy-absorbing structure provided in this embodiment has a simple structure, low cost, and good economic benefits. Furthermore, the energy-absorbing device provided in this embodiment has advantages such as large energy absorption, small fluctuations in buffer force, low peak force, stable compression process, and light weight. The energy absorption can be adapted by adjusting the diameter and number of energy-absorbing cylindrical pins, as well as the wall thickness and width of the energy-absorbing groove, providing high flexibility.

Claims

1. A kind of anti-climber based on extrusion energy-absorbing structure, it is characterized in that, The anti-climbing tooth is connected with the cross energy-absorbing guide rod, and the mounting plate is respectively arranged at two ends. The vertical arm and the horizontal arm of the right-angle adapter block are respectively provided with screw mounting holes at two ends, which are connected with the base through screws and are centrally symmetrically distributed, and the end surface is provided with a bolt hole, which is connected with the vehicle body through a bolt.

2. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The cross energy-absorbing guide rod is provided with a plurality of long-stroke energy-absorbing grooves on the surface, and the energy-absorbing grooves are matched with a plurality of equidistantly arranged cylindrical pins on the mounting plate to form a plurality of energy-absorbing units.

3. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The right-angle adapter block of the mounting plate is connected with the base through screws to ensure reasonable assembly of the cylindrical pins.

4. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The cross energy-absorbing guide rod is cross-shaped, has good directivity, and can bear vertical and lateral loads generated in the collision process to ensure stability in the collision and energy-absorbing process.

5. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The entrance contact position of the energy-absorbing groove is chamfered to avoid local stress concentration and reduce the peak buffer force.

6. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The positioning pins of the cross energy-absorbing guide rod are oppositely distributed on both sides of the guide rod to fix the mounting plate.

7. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The rubber sleeve of the cross energy-absorbing guide rod is arranged on the surface of the limiting groove, which can effectively prevent dust and impurities from entering the limiting groove, avoid the jamming of the moving mechanism, ensure the reliability of the energy-absorbing device in complex environments, and prolong the service life.

8. The anti-climber based on the extruded energy-absorbing structure according to claim 1, characterized in that, The anti-climbing tooth can be matched with the anti-climbing tooth connected to another rail vehicle in the case of collision to limit the relative height of the two vehicles during the collision process.

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