Extensible train anti-creeper
By designing an extendable train anti-climb device, utilizing the mechanical locking structure of boss explosion bolts and limit switches, combined with aluminum honeycomb buffer components and airbag assemblies, the problem of low energy absorption efficiency of traditional anti-climb devices is solved, achieving a highly efficient and reliable collision buffering effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-28
- Publication Date
- 2026-03-13
AI Technical Summary
Traditional train anti-creep devices have low energy absorption efficiency due to the limitation of buffer material length, and their protection is unstable under complex collision conditions, which cannot meet the safety requirements of modern rail transit.
Design an extendable train anti-climb device that connects the boss and the outer shell with a boss explosion bolt. In the non-collision state, it can store the buffer module and the propulsion module. In the event of a collision, it can quickly extend and be mechanically locked by triggering the locking device through a limit switch. Combined with aluminum honeycomb buffer and airbag assembly, it can improve energy absorption efficiency.
It achieves efficient buffering with rapid response during collisions. The aluminum honeycomb material stably absorbs energy, ensuring train safety and avoiding excessive impact. The system logic is clear and reliable, and it can adapt to complex working conditions.
Smart Images
Figure CN121650718A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of railway transportation technology, and in particular to a retractable train anti-climb device. Background Technology
[0002] In the field of rail transit, train collisions can easily lead to vehicle climbing (i.e., "car climbing"), causing serious casualties and equipment damage. As a core protective component, anti-climbing devices play a crucial role in absorbing collision energy and preventing car climbing, and are an important part of the train safety system.
[0003] Traditional anti-creep devices are fixed structures installed inside the train's front end. Limited by the train's structure, the length of the buffer material is limited, resulting in low energy absorption and failing to meet train collision protection requirements. This often leads to excessive impact force and protection failure during a collision. While improved anti-creep devices such as cutting-type and shrink-tube types optimize the energy-absorbing structure, they do not overcome the limitations of space and buffer material length, and suffer from poor adaptability, high initial peak force, and weak resistance to off-center loads, resulting in unstable protection under complex collision conditions. With the increasing safety standards for rail transit, traditional and some improved anti-creep devices are no longer sufficient.
[0004] Based on the above reasons, this invention designs an extendable train anti-climb device that can overcome the limitations of space and the length of buffer energy-absorbing materials and has high energy absorption efficiency. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an extendable train anti-climb device. The boss and the outer shell are connected by a boss explosion bolt. The buffer module and the propulsion module of the anti-climb device are compactly stored in the outer shell in the non-collision state, without interfering with the normal operation and maintenance of the train. When a collision occurs, the boss explosion bolt is cut off, and the buffer module and the propulsion module extend rapidly, so that the buffer module extends out of the outer shell and enters the working position. The locking device is triggered by a limit switch to complete a reliable mechanical locking. The response is fast and the degree of automation is high.
[0006] To achieve the objectives of this invention, the technical solution adopted is as follows: This invention discloses an extendable train anti-climb device, comprising anti-climb teeth, a limit switch, a locking device, a buffer module, a housing, a boss, and a propulsion module. The housing has a hollow square structure with an open front end. The inner end wall of the housing is connected to the rear end of the propulsion module. The front end of the propulsion module is connected to the rear end of the buffer module via the boss. The front end of the buffer module is connected to the anti-climb teeth. The buffer module and the boss can slide in cooperation with the inner wall of the housing. The limit switch is fixed to the middle of the front end of the inner cavity top wall of the housing. The locking device is fixed to the front top of the housing. The side wall of the boss is connected to the rear side of the outer wall of the housing via a boss explosion bolt. The top center of the boss has a lock core groove that can match and lock with the locking device. The middle of the front top of the boss can trigger the limit switch. In the initial state, the front end of the buffer module is flush with the front end of the housing.
[0007] The anti-climb teeth include a connecting block, a connecting column, and an anti-climb plate. The connecting block is connected to the front end of the buffer module by bolts. The rear end of the connecting column is connected to the middle of the front end of the connecting block. The front end of the connecting column is connected to the middle of the rear end of the anti-climb plate. The front wall of the anti-climb plate is provided with a plurality of anti-climb grooves with equilateral triangular cross-sections at equal intervals along the vertical direction.
[0008] The buffer module is composed of several buffer units connected in sequence. Each buffer unit includes a one-dimensional deployment mechanism and a buffer component. The propulsion module is composed of several propulsion units connected in sequence. Each propulsion unit includes a one-dimensional deployment mechanism and an airbag assembly. The rear end of the propulsion unit at the end is fixedly connected to the bottom plate at the rear end of the inner cavity of the outer shell. The one-dimensional deployment mechanism includes a small connecting bolt, a lower platform, a lower branch rod, an upper branch rod, an upper platform, and a large connecting bolt. The upper platform and the lower platform are connected by four branches. The system includes an upper branch rod, a lower branch rod, and a large connecting bolt. The top end of the upper branch rod and the bottom end of the lower branch rod are respectively hinged to the bottom corner of the upper platform and the top corner of the lower platform via small connecting bolts. The top end of the lower branch rod and the bottom end of the upper branch rod are hinged together via the large connecting bolt. The axes of the small connecting bolts at the top ends of adjacent upper branch rods and bottom ends of lower branch rods are perpendicular. When folded, the upper branch rod and the lower branch rod are located between the upper platform and the lower platform, and the upper branch rod and the lower branch rod are parallel to each other. The upper branch rod and the lower branch rod are of equal length.
[0009] The two ends of the buffer are respectively connected to the bottom middle of the upper platform and the top middle of the lower platform, and the buffer is made of aluminum honeycomb; the airbag assembly includes an airbag body and an inflation module. The two ends of the airbag body are respectively connected to the bottom middle of the upper platform and the top middle of the lower platform, and the lower platform is provided with an inflation module that communicates with the inner cavity of the airbag body.
[0010] Small wheels are connected to the four corners of the side walls of the upper and lower platforms, and the small wheels can slide in cooperation with the inner wall of the outer shell.
[0011] The limit switch includes a switch body, a rotating plate, a roller, a compression spring, a first contact, and a second contact. The switch body has a square structure, with its top fixed to the middle of the front end of the inner cavity top wall of the housing. The roller is fixed to the bottom front end of the rotating plate, and the rear end of the rotating plate is hinged to the bottom rear end of the switch body. The compression spring is connected between the rear top side of the rotating plate and the rear bottom side of the switch body. The first contact is provided on the front top side of the rotating plate, and the second contact, which can contact the first contact, is provided on the front bottom side of the switch body.
[0012] The boss has a square structure with a protrusion at the top front end. The middle part of the protrusion has a limiting groove for the limit switch to pass through. The front end of the limiting groove forms a downward sloping surface. The bottom of the sloping surface is higher than the highest point of the buffer module. After the roller of the limit switch rolls over the sloping surface, the first contact and the second contact come into contact.
[0013] The boss is provided with firing cylinders on both sides of its rear end for driving the boss to move forward.
[0014] The locking device includes a lock cylinder, a locking device housing, a locking spring, and a locking device explosion bolt. The locking device housing has a hollow square structure with an open bottom. The top end of the locking spring is connected to the top of the inner cavity of the locking device housing, and the bottom end of the locking spring is connected to the top end of the lock cylinder. The lock cylinder can slide against the inner wall of the locking device housing. The top of the housing has a through hole for the lock cylinder to pass through. The side wall of the lock cylinder is connected to the outer wall of the locking device housing through the locking device explosion bolt. When the lock cylinder is connected to the locking device housing, the height of the bottom end of the lock cylinder is higher than the height of the top end of the protrusion.
[0015] The beneficial effects of this invention are as follows: (1) The present invention connects the boss and the outer shell by means of the boss explosion bolt. The buffer module and the propulsion module of the anti-climb device are compactly stored in the outer shell in the non-collision state, without interfering with the normal operation and maintenance of the train. When a collision occurs, the boss explosion bolt is cut off, the buffer module and the propulsion module extend rapidly, so that the buffer module extends out of the outer shell and enters the working position, and the locking device is triggered by the limit switch to complete the reliable mechanical locking. The response is fast and the degree of automation is high. (2) The buffer module of the present invention is composed of multiple buffer units connected together. The buffer unit is an aluminum honeycomb embedded inside a one-dimensional unfolding mechanism. The length of a single aluminum honeycomb is within a reliable range. Then, by stacking multiple one-dimensional unfolding mechanisms, the total length of the aluminum honeycomb can be freely increased, thereby realizing the on-demand adjustment of the length of the buffer module, improving the energy absorption of the buffer material, and solving the problem of the buffer component being too long and easily buckling. (3) The buffer module of the present invention integrates aluminum honeycomb buffer. As a mature energy-absorbing material, aluminum honeycomb can absorb a large amount of collision kinetic energy stably and efficiently through plastic buckling deformation when subjected to axial compression, effectively reducing the impact force transmitted to the vehicle body structure. (4) The limit switch of the present invention serves as a position positioning mechanism, ensuring that the locking action of the locking device is triggered only after the propulsion module has fully extended into position, thus avoiding the situation of accidental locking due to not being in position or not locking tightly after being in position. The system has a clear working logic and strong reliability. (5) The present invention provides small wheels at the four corners of the upper and lower platforms of the buffer module and the propulsion module, which greatly reduces the frictional resistance when the mechanism slides on the inner wall of the outer shell, ensuring that the mechanism can be pushed out more quickly and smoothly after the explosive bolts are cut off. (6) The present invention uses a protrusion with a bevel and a limiting groove designed at the front end of the boss to smoothly press the roller of the limit switch and achieve reliable electrical contact closure. The locking device uses a spring-preloaded lock core to cooperate with the lock core groove on the boss to achieve pure mechanical locking, with large locking force and strong impact resistance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the unfolded state of the present invention; Figure 2 This is a cross-sectional view of the invention in its unfolded state; Figure 3 for Figure 2 Enlarged view of a portion of the image; Figure 4 for Figure 3 Enlarged view of a portion of the image (b); Figure 5 This is a schematic diagram of the retracted state of the present invention; Figure 6 for Figure 5 Enlarged view of a portion of the image (c); Figure 7 This is a schematic cross-sectional view of the retracted state of the present invention; Figure 8 This is a schematic diagram of the one-dimensional unfolding mechanism in this invention; Figure 9 This is a schematic diagram of the buffer component in this invention; Figure 10 This is a schematic diagram of the propulsion unit in this invention; Figure 11 This is a schematic diagram of the buffer unit structure in this invention; Figure 12 This is a schematic diagram of the propulsion module in this invention when it is retracted.
[0017] In the attached diagram, 1 is the anti-climb tooth, 2 is the limit switch, 3 is the locking device explosion bolt, 4 is the locking device, 5 is the small wheel, 6 is the buffer module, 7 is the outer shell, 8 is the working cylinder, 9 is the boss explosion bolt, 10 is the boss, 11 is the propulsion module, 12 is the base plate, 13 is the lock cylinder, 14 is the locking device housing, 15 is the locking spring, 16 is the small connecting bolt, 17 is the lower platform, 18 is the lower branch rod, 19 is the upper branch rod, 20 is the upper platform, 21 is the large connecting bolt, 22 is the one-dimensional unfolding mechanism, 23 is the airbag assembly, 24 is the buffer, 25 is the lock cylinder groove, 26 is the protrusion, 27 is the limit groove, 28 is the inclined surface, 101 is the connecting block, 102 is the connecting column, 103 is the anti-climb plate, 104 is the anti-climb groove, 201 is the switch body, 202 is the rotating plate, 203 is the roller, 204 is the compression spring, 205 is the first contact, and 206 is the second contact. Detailed Implementation
[0018] The present invention will be further described below: Please see Figure 1-12 , This invention discloses a retractable train anti-climb device, such as... Figure 1 , Figure 2 , Figure 5 and Figure 7As shown, the device includes an anti-climb tooth 1, a limit switch 2, a locking device 4, a buffer module 6, a housing 7, a boss 10, and a propulsion module 11. The housing 7 is a hollow square structure with an open front end. The inner end wall of the housing 7 is connected to the rear end of the propulsion module 11. The front end of the propulsion module 11 is connected to the rear end of the buffer module 6 via the boss 10. The front end of the buffer module 6 is connected to the anti-climb tooth 1. The buffer module 6 and the boss 10 can slide and cooperate with the inner wall of the housing 7. The limit switch 2 is fixed to the middle of the front end of the top wall of the inner cavity of the housing 7. The locking device 4 is fixed to the top front end of the housing 7. The side wall of the boss 10 is connected to the rear side of the outer wall of the housing 7 by a boss explosion bolt 9. The top center of the boss 10 is provided with a lock core groove 25 that can be matched and locked with the locking device 4. The front end of the top of the boss 10 can trigger the limit switch 2. In the initial state, the front end of the buffer module 6 is flush with the front end of the housing 7. The boss 10 and the housing 7 are connected by the boss explosion bolt 9. The buffer module 6 and the propulsion module 11 of the anti-climb device are compactly stored in the housing 7 in the non-collision state, without interfering with the normal operation and maintenance of the train. When a collision occurs, the boss explosion bolt 9 is cut off, and the buffer module 6 and the propulsion module 11 quickly extend, so that the buffer module 6 extends out of the housing 7 and enters the working position. The locking device 4 is triggered by the limit switch 2 to complete a reliable mechanical lock. The response is fast and the degree of automation is high.
[0019] Furthermore, such as Figure 2 and Figure 5 As shown, the anti-climbing tooth 1 includes a connecting block 101, a connecting post 102, and an anti-climbing plate 103. The connecting block 101 is connected to the front end of the buffer module 6 by bolts. The rear end of the connecting post 102 is connected to the middle of the front end of the connecting block 101. The front end of the connecting post 102 is connected to the middle of the rear end of the anti-climbing plate 103. The front wall of the anti-climbing plate 103 is provided with a plurality of anti-climbing grooves 104 with equilateral triangular cross sections at equal intervals along the vertical direction. The anti-climbing plate 103 is connected to the front end of the buffer module 6 through the connecting post 102 and the connecting block 101. When the trains collide, the anti-climbing grooves 104 on the front wall of the anti-climbing plates 103 of the two trains can mesh and jam with each other to prevent the two trains from "climbing" each other.
[0020] Furthermore, such as Figure 2As shown, the buffer module 6 is composed of several buffer units connected in sequence. Each buffer unit includes a one-dimensional unfolding mechanism 22 and a buffer element 24. The propulsion module 11 is composed of several propulsion units connected in sequence. Each propulsion unit includes a one-dimensional unfolding mechanism 22 and an airbag assembly 23. The rear end of the propulsion unit at the end is fixedly connected to the bottom plate 12 at the rear end of the inner cavity of the outer shell 7. The buffer module 6 is composed of multiple buffer units connected together. The buffer unit embeds the aluminum honeycomb 24 inside the one-dimensional unfolding mechanism 22. The length of a single aluminum honeycomb segment is within a reliable range. Then, by stacking multiple one-dimensional unfolding mechanisms 22, the total length of the aluminum honeycomb can be freely increased, thereby realizing the on-demand adjustment of the length of the buffer module, improving the energy absorption of the buffer material, and solving the problem of the buffer element 24 being too long and prone to buckling.
[0021] Furthermore, such as Figure 8 As shown, the one-dimensional unfolding mechanism 22 includes a small connecting bolt 16, a lower platform 17, a lower branch rod 18, an upper branch rod 19, an upper platform 20, and a large connecting bolt 21. The upper platform 20 and the lower platform 17 are connected by four branches, each branch including an upper branch rod 19, a lower branch rod 18, and a large connecting bolt 21. The top end of the upper branch rod 19 and the bottom end of the lower branch rod 18 are respectively hinged to the bottom corner of the upper platform 20 and the top corner of the lower platform 17 via the small connecting bolt 16. The top end of the lower branch rod 18 and the bottom end of the upper branch rod 19 are hinged via the large connecting bolt 21. Adjacent upper branch rods... The axes of the small connecting bolts 16 at the top of the upper branch 19 and the bottom of the lower branch 18 are perpendicular; after being folded, the upper branch 19 and the lower branch 18 are located between the upper platform 20 and the lower platform 17, and the upper branch 19 and the lower branch 18 are parallel; the upper branch 19 and the lower branch 18 have the same length. When the one-dimensional unfolding mechanism 22 is stored, the upper branch 19 and the lower branch 18 are folded parallel between the upper and lower platforms, and the overall axial dimension is extremely small; when extended, driven by airbags or external force, the mechanism can quickly unfold into a stable truss structure in one dimension, providing a large extension stroke and stable support.
[0022] Furthermore, such as Figure 9 and Figure 11 As shown, the two ends of the buffer 24 are connected to the bottom middle of the upper platform 20 and the top middle of the lower platform 17, respectively. The buffer module 6 integrates an aluminum honeycomb buffer. As a mature energy-absorbing material, aluminum honeycomb is composed of a large number of regular hexagonal tubular structures. When subjected to axial compression, it can absorb a large amount of collision kinetic energy stably and efficiently through plastic buckling deformation, effectively reducing the impact force transmitted to the vehicle body structure. In addition, the buffer 24 can also be selected from thin-walled tubes, foamed aluminum, corrugated tubes, etc., according to different working conditions.
[0023] Furthermore, such as Figure 10As shown, the airbag assembly 23 includes an airbag body and an inflation module. The two ends of the airbag body are connected to the bottom middle of the upper platform 20 and the top middle of the lower platform 17, respectively. The lower platform 17 has an inflation module that communicates with the inner cavity of the airbag body. The inflation module is filled with sodium azide and is installed inside the lower platform 17. When a collision signal is received, it ignites and explodes, instantly filling the airbag with high-pressure gas, causing the airbag to expand rapidly, thereby generating a powerful thrust that drives the entire mechanism to deploy quickly.
[0024] Furthermore, such as Figure 1 As shown, small wheels 5 are connected to the four corners of the side walls of the upper platform 20 and the lower platform 17 respectively. The small wheels 5 can slide in cooperation with the inner wall of the outer shell 7, which can reduce friction and stabilize the direction of movement, so that the friction is smaller and the direction of movement is more stable during the process of the buffer module 6 extending and the propulsion module 11 unfolding.
[0025] Furthermore, such as Figure 4 and Figure 6As shown, the limit switch 2 includes a switch body 201, a rotating plate 202, a roller 203, a compression spring 204, a first contact 205, and a second contact 206. The switch body 201 has a square structure, and its top is fixed to the middle of the front end of the inner cavity top wall of the housing 7. The roller 203 is fixed to the bottom front end of the rotating plate 202. The rear end of the rotating plate 202 is hinged to the bottom rear end of the switch body 201. The top rear side of the rotating plate 202 and the switch body The compression spring 204 is connected between the bottom and rear sides of the switch body 201. A first contact 205 is provided on the top front side of the rotating plate 202. A second contact 206, capable of contacting the first contact 205, is provided on the bottom front side of the switch body 201. The boss 10 has a square structure, with a protrusion 26 at its front top. A limiting groove 27 for the limit switch 2 to pass through is provided in the middle of the protrusion 26. The front end of the limiting groove 27 forms a downwardly sloping surface 28. The bottom of the 28 is higher than the highest point of the buffer module 6. After the roller 203 of the limit switch 2 rolls over the inclined surface 28, the first contact 205 and the second contact 206 come into contact. The limit switch 2 acts as a position positioning mechanism to ensure that the locking device 4 is triggered only after the push module 11 is fully extended into position, thus avoiding accidental locking due to not being in position or not locking tightly after being in position. The system has a clear working logic and strong reliability. The specific working principle is as follows: When the push module 11 is folded or the buffer module 6 is not fully extended out of the outer shell 7, the front end of the rotating plate 202 is tilted downward under the action of the compression spring 204. At this time, the first contact 205 and the second contact 206 will not come into contact, and the circuit is broken. When the buffer module 6 is fully extended out of the outer shell 7, the roller 203 at the front end of the rotating plate 202 is pressed by the bottom of the inclined surface 28 and the limit groove 27, causing the rotating plate 202 to rotate clockwise. The first contact 205 and the second contact 206 come into contact, the circuit is connected, and the signal is transmitted to the locking device 4. The specific circuit is as follows: the first contact 205 and the second contact 206 of the limit switch form a circuit with the power supply and the ECU controller. When no collision occurs, the first contact 205 and the second contact 206 are not in contact, and the circuit is open. When the first contact 205 and the second contact 206 are in contact, the detection circuit from the ECU controller to the limit switch 2 is made conductive. The ECU controller detects that the circuit changes from "open circuit" to "short circuit" or low resistance state, and identifies it as a "climb guard has fully extended to the position" signal. The ECU controller combines the main signal from the collision sensor to perform logical judgment.
[0026] The ECU controller sends a high-current pulse signal to the electro-explosive tube inside the explosive bolt 3 of the locking device. The electro-explosive tube detonates instantaneously, cutting off the explosive bolt 3 and releasing the lock cylinder 13. The locking spring 15 pushes the lock cylinder 13 downward into the lock cylinder groove 25 of the boss 10, completing the mechanical locking. The core of this invention lies in the extendable mechanical structure, the one-dimensional deployment mechanism, the collaborative working logic of the aluminum honeycomb buffer and airbag propulsion, and the concept of mechanical limit triggering and locking. The specific circuit implementation is considered prior art or a minor engineering detail and is therefore not described in detail.
[0027] Furthermore, such as Figure 7 As shown, the rear sides of the boss 10 are provided with ignition cylinders 8 for driving the boss 10 to move forward. The ignition cylinders 8, in conjunction with the propulsion module 11, drive the boss 10 and the buffer module 6 to move forward. The ignition cylinders 8 are a type of existing one-time actuator that uses the explosion of gunpowder to generate high temperature and high pressure gas, which drives the piston or cutting device in a very short time to complete a specific mechanical action.
[0028] Furthermore, such as Figure 3 and Figure 7 As shown, the locking device 4 includes a lock cylinder 13, a locking device housing 14, a locking spring 15, and a locking device explosion bolt 3. The locking device housing 14 has a hollow square structure with an open bottom. The top end of the locking spring 15 is connected to the top of the inner cavity of the locking device housing 14, and the bottom end of the locking spring 15 is connected to the top end of the lock cylinder 13. The lock cylinder 13 can slide against the inner wall of the locking device housing 14. The top of the outer shell 7 has a through hole for the lock cylinder 13 to pass through. The sidewall of the lock cylinder 13 is connected to the outer wall of the locking device housing 14 via the locking device explosion bolt 3. When the lock cylinder 13 is connected to the locking device housing 14, the height of the bottom end of the lock cylinder 13 is higher than the height of the top end of the protrusion 26. It is fixedly installed above the through hole at the front end of the top of the outer casing 7 via the locking device housing 14. The locking device 4 contains a lock cylinder 13 that can slide up and down within the housing 14. The top of the lock cylinder 13 is connected to the top of the locking device housing 14 via a locking spring 15. The sidewall of the lock cylinder 13 is connected and fixed to the housing 14 via the locking device explosion bolt 3. At this time, the locking spring 15 is in a compressed and stored state, and the bottom end of the lock cylinder 13 is held higher than the top end of the protrusion 26. A through hole is opened at the corresponding position on the top of the outer casing 7, allowing the lock cylinder 13 to pass through. When the first contact 205 contacts the second contact 206, the circuit is turned on, the locking device explosion bolt 3 receives a signal to cut off, and the lock cylinder 13 moves downward under the reset action of the locking spring 15 and inserts into the lock cylinder groove 25, thus completing the locking of the boss 10.
[0029] Work process: Before the collision (in the collapsed state): as shown Figure 5 and Figure 7 As shown, both the boss explosion bolt 9 and the locking device explosion bolt 3 are in the connected state. The entire buffer module 6 and the propulsion module 11 are retracted into the housing 7, with the front end of the buffer module 6 flush with the front end of the housing 7. The lock cylinder 13 of the locking device 4 is raised and does not contact the boss 10.
[0030] Upon collision: The train sensors detect the collision signal and simultaneously trigger three actions: a) cutting off the explosive bolt 9 on the boss; b) activating the ignition cylinder 8, where the propellant ignites and propels the boss; c) activating the inflation modules of each airbag assembly 23 in the propulsion module 11, causing the high-pressure gas to instantly expand the airbag body and generate a powerful thrust. Since the explosive bolt 9 on the boss has been cut off, the thrust from the ignition cylinder 8 and the propulsion module 11 pushes the boss 10, the buffer module 6, and the anti-climbing teeth 1 together to slide rapidly forward along the outer shell 7.
[0031] Extension and locking: such as Figure 1-4 As shown, when the buffer module 6 moves forward, the protrusion 26 on the boss 10 moves to below the limit switch 2. The inclined surface 28 at the front end of the protrusion 26 first contacts the roller 203 and presses it upward. As the movement continues, the roller 203 slides over the inclined surface 28 and enters the bottom plane of the limit groove 27. At this time, the rotating plate 202 of the limit switch 2 is pressed to the highest position, and the first contact 205 and the second contact 206 make reliable contact, and the circuit is connected. This connection signal is sent to the controller, which then issues a command to cut off the locking device explosion bolt 3. After the locking device explosion bolt 3 is cut off, the compressed locking spring 15 is released and pushes the lock cylinder 13 downward. At this time, the lock cylinder groove 25 at the top of the boss 10 moves exactly to the bottom of the lock cylinder 13. Under the action of the spring force, the lock cylinder 13 quickly inserts downward into the lock cylinder groove 25, realizing mechanical locking and preventing the mechanism from retracting under the impact force.
[0032] Energy Absorption: After locking is completed, the continuous impact force of the train collision is transmitted to the buffer module 6 through the interlocked anti-climb teeth 1. The aluminum honeycomb buffer 24 in the buffer module 6 undergoes layer-by-layer crushing plastic deformation under huge axial pressure, converting the collision kinetic energy into deformation energy, thereby smoothly absorbing the impact and protecting the car body structure and passenger safety.
[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A retractable train anti-climb device, characterized in that: It includes anti-climb teeth (1), limit switch (2), locking device (4), buffer module (6), housing (7), boss (10) and propulsion module (11). The outer shell (7) has a hollow square structure with an open front end. The inner wall of the outer shell (7) is connected to the rear end of the propulsion module (11). The front end of the propulsion module (11) is connected to the rear end of the buffer module (6) through the boss (10). The front end of the buffer module (6) is connected to the anti-climb tooth (1). The buffer module (6) and the boss (10) can slide in cooperation with the inner wall of the outer shell (7). The limit switch (2) is fixed in the middle of the front end of the inner cavity top wall of the outer shell (7). The locking device (4) is fixed in the top front end of the outer shell (7). The side wall of the boss (10) is connected to the rear side of the outer wall of the outer shell (7) by a boss explosion bolt (9). The top center of the boss (10) is provided with a lock core groove (25) that can match and lock with the locking device (4). The top front end of the boss (10) can trigger the limit switch (2). In the initial state, the front end of the buffer module (6) is flush with the front end of the outer shell (7).
2. The extendable train anti-climb device according to claim 1, characterized in that: The anti-climb tooth (1) includes a connecting block (101), a connecting column (102), and an anti-climb plate (103). The connecting block (101) is connected to the front end of the buffer module (6) by bolts. The rear end of the connecting column (102) is connected to the middle of the front end of the connecting block (101). The front end of the connecting column (102) is connected to the middle of the rear end of the anti-climb plate (103). The front wall of the anti-climb plate (103) is provided with a plurality of anti-climb grooves (104) with equilateral triangular cross sections at equal intervals along the vertical direction.
3. The extendable train anti-climb device according to claim 1, characterized in that: The buffer module (6) is composed of several buffer units connected in sequence. The buffer unit includes a one-dimensional deployment mechanism (22) and a buffer component (24). The propulsion module (11) is composed of several propulsion units connected in sequence. The propulsion unit includes a one-dimensional deployment mechanism (22) and an airbag assembly (23). The rear end of the propulsion unit at the end is fixedly connected to the bottom plate (12) at the rear end of the inner cavity of the outer shell (7). The one-dimensional deployment mechanism (22) includes a small connecting bolt (16), a lower platform (17), a lower branch rod (18), an upper branch rod (19), an upper platform (20), and a large connecting bolt (21). The upper platform (20) and the lower platform (17) are connected by four branches, and the branches include an upper branch rod (19). The lower branch rod (18) and the large connecting bolt (21) are connected by small connecting bolts (16) to the bottom corner of the upper platform (20) and the top corner of the lower platform (17), respectively. The top of the lower branch rod (18) and the bottom of the upper branch rod (19) are connected by the large connecting bolt (21). The axes of the small connecting bolts (16) at the top of the upper branch rod (19) and the bottom of the lower branch rod (18) are perpendicular. After being folded, the upper branch rod (19) and the lower branch rod (18) are located between the upper platform (20) and the lower platform (17) and are parallel to each other. The upper branch rod (19) and the lower branch rod (18) are of equal length.
4. The extendable train anti-climb device according to claim 3, characterized in that: The two ends of the buffer (24) are respectively connected to the bottom middle of the upper platform (20) and the top middle of the lower platform (17), and the buffer (24) is an aluminum honeycomb; the airbag assembly (23) includes an airbag body and an inflation module. The two ends of the airbag body are respectively connected to the bottom middle of the upper platform (20) and the top middle of the lower platform (17), and the lower platform (17) is provided with an inflation module that communicates with the inner cavity of the airbag body.
5. The extendable train anti-climb device according to claim 4, characterized in that: Small wheels (5) are connected to the four corners of the side walls of the upper platform (20) and the lower platform (17), and the small wheels (5) can slide in cooperation with the inner wall of the outer shell (7).
6. The extendable train anti-climb device according to claim 1, characterized in that: The limit switch (2) includes a switch body (201), a rotating plate (202), a roller (203), a compression spring (204), a first contact (205), and a second contact (206). The switch body (201) has a square structure, and its top is fixed to the middle of the front end of the inner cavity top wall of the outer shell (7). The roller (203) is fixed at the bottom front end of the rotating plate (202). The rear end of the rotating plate (202) is hinged to the bottom rear end of the switch body (201). The compression spring (204) is connected between the rear top side of the rotating plate (202) and the rear bottom side of the switch body (201). The first contact (205) is provided on the front top side of the rotating plate (202), and the second contact (206) that can contact the first contact (205) is provided on the front bottom side of the switch body (201).
7. A retractable train anti-climb device according to claim 6, characterized in that: The boss (10) has a square structure and a protrusion (26) at the top of its front end. The middle part of the protrusion (26) is provided with a limiting groove (27) for the limit switch (2) to pass through. The front end of the limiting groove (27) forms a downward inclined surface (28). The bottom of the inclined surface (28) is higher than the highest point of the buffer module (6). After the roller (203) of the limit switch (2) rolls past the inclined surface (28), the first contact (205) and the second contact (206) come into contact.
8. A retractable train anti-climb device according to claim 7, characterized in that: The rear sides of the boss (10) are provided with fire-working cylinders (8) for driving the boss (10) to move forward.
9. A retractable train anti-climb device according to claim 8, characterized in that: The locking device (4) includes a lock cylinder (13), a locking device housing (14), a locking spring (15), and a locking device explosion bolt (3). The locking device housing (14) has a hollow square structure with an open bottom. The top of the locking spring (15) is connected to the top of the inner cavity of the locking device housing (14), and the bottom of the locking spring (15) is connected to the top of the lock cylinder (13). The lock cylinder (13) can slide with the inner wall of the locking device housing (14). The top of the outer shell (7) is provided with a through hole for the lock cylinder (13) to pass through. The side wall of the lock cylinder (13) is connected to the outer wall of the locking device housing (14) through the locking device explosion bolt (3). When the lock cylinder (13) is connected to the locking device housing (14), the height of the bottom of the lock cylinder (13) is higher than the height of the top of the protrusion (26).