A tip collision cushion device for a PRT line split
By designing a tip collision buffer device with buffering, locking, and reset mechanisms, the problems of easy damage, high maintenance costs, and low response sensitivity of existing devices are solved. Effective buffering and rapid recovery are achieved, reducing maintenance costs and time, and maintaining the scanning continuity of the laser sensor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN PROVINCE AIRPORT GRP CO LTD
- Filing Date
- 2026-04-15
- Publication Date
- 2026-06-05
AI Technical Summary
The existing PRT line shunt point tip collision buffer device is prone to foam cracking and falling off after a vehicle collision, affecting the scanning effect of the laser sensor. After damage, the entire foam needs to be replaced, which is costly. The fixed position is prone to misalignment, the line restoration cycle is long, and the collision monitoring box has low sensitivity to low-speed scraping collisions around the foam.
A tip collision buffer device is designed, comprising a buffer mechanism, a locking mechanism, and a reset mechanism. It adopts a support frame and elastic elements. The buffering and locking are achieved through the cooperation of the locking mechanism and the limiting structure. Combined with contour components and guide grooves, the vehicle collision force is decomposed. The lateral force is decomposed by umbrella-shaped connecting columns and buffer foam. The reset mechanism is used for rapid recovery.
It effectively buffers collision impact, avoids damage to the vehicle body from reaction forces, maintains the continuity of laser sensor scanning, has a rapid recovery device, reduces maintenance costs and time, and improves the response sensitivity to low-speed scrapes.
Smart Images
Figure CN122147808A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tip collision buffering technology, and more particularly to a tip collision buffering device for PRT line shunts. Background Technology
[0002] PRT (Personal Rapid Transit) systems consist of small, driverless vehicles on dedicated right-of-way lines. Due to the need for precise detection of the distance between the vehicle and the curb using laser sensors on both sides of the vehicle, the lines are designed to be narrow. This prevents vehicles from laterally turning or maneuvering to avoid obstacles, creating a risk of scraping or colliding with the curb. Considering the sharp points at line divergences, stress concentration is more likely during a collision, and the vehicle's trajectory is more complex at these points, any positioning errors or path tracking control deviations can easily cause the vehicle to deviate from its intended turning trajectory at an angle, resulting in a collision with the curb at the divergence point.
[0003] The existing PRT line shunt points use a tip-collision buffer device that is a one-piece polyolefin foam sheet that is manually cut, shaped, and layered for final shaping. A collision monitoring box is placed inside the foam. By anchoring a steel plate with welded reinforcing bars to the ground, inserting the one-piece foam, and then securing it with pressure strips and nuts, this device serves as a passive safety redundancy. Its core purpose is to effectively buffer the impact force through its own deformation and collapse in the event of a collision. Simultaneously, the collision monitoring box of the AVP system and the limit switches on both sides of the vehicle's bumper vibrate and trigger, respectively stopping upstream vehicles and the colliding vehicle, minimizing structural damage to the vehicle itself.
[0004] However, in existing devices, the foam is prone to cracking and falling off after a vehicle collision, which seriously affects the scanning effect of the laser sensor. Furthermore, after damage, a whole piece of foam needs to be replaced, which is costly. The fixed position is prone to misalignment with the original position, and the circuit recovery cycle is long, causing significant interference to the continuity of system operation. At the same time, the collision monitoring box has low sensitivity to minor scratches around the foam at low speeds. Summary of the Invention
[0005] The purpose of this invention is to provide a tip collision buffer device for PRT line shunt points to address the above-mentioned shortcomings. This invention solves the problems of existing devices where the foam is prone to cracking and falling off after a vehicle collision, which seriously affects the scanning effect of the laser sensor. Furthermore, the device requires the replacement of the entire foam after damage, which is costly. The fixed position is also prone to misalignment with the original position, resulting in a long line recovery cycle and significant interference with the continuity of system operation. Additionally, the collision monitoring box has low sensitivity to minor, low-speed scratches around the foam.
[0006] This invention is achieved through the following scheme: A tip collision buffer device for a PRT line shunt includes a buffer mechanism, a locking mechanism, and a reset mechanism. The buffer mechanism has a support frame and an elastic element. The elastic element can move along the length of the support frame. The locking mechanism is mounted on the elastic element. The support frame has a limiting structure that cooperates with the locking mechanism. The locking mechanism can extend and retract along the width of the support frame under the action of the reset mechanism, and locks and unlocks in cooperation with the limiting structure during the extension and retraction process.
[0007] Based on the above-mentioned structure of a tip collision buffer device for PRT line shunt, it further includes a contour component, which includes a triangular column-shaped aluminum foam block and a foam navigation plate; the foam navigation plate is disposed on the left and right sides of the buffer mechanism; the triangular column-shaped aluminum foam block is disposed on the line surface between the locking mechanism and the foam navigation plate.
[0008] Based on the above-mentioned structure of a tip collision buffer device for a PRT line shunting point, the bottom of the contact surface between the triangular columnar aluminum foam block and the locking mechanism is provided with a grease-coated groove, and the top of the locking mechanism is provided with a head buffer foam. The locking mechanism and the head buffer foam can slide directionally along the groove on the triangular columnar aluminum foam block. A locking strip is also provided on the ground at the line shunting point. The bottom of the outer contour surface of the head buffer foam is in close contact with the locking strip. The contour component and the side contour of the head buffer foam together constitute the curb of the line shunting point.
[0009] Based on the above-mentioned structure of a tip collision buffer device for a PRT line diversion point, the support frame is fixedly connected to the curb and the contact surface of the line diversion point. The left and right sides of the support frame are provided with first guide grooves. The foam navigation plate is provided with a first guide rail that cooperates with the first guide groove. The first guide rail of the foam navigation plate is slidably connected to the first guide groove. The bottom surface of the foam navigation plate is fixedly connected to the contact surface of the line diversion point, and the other side is fixedly connected to the side of the curb.
[0010] Based on the above-described structure of a tip collision buffer device for a PRT line shunt, the locking mechanism includes a movable frame with a second guide groove around its perimeter. A second guide rail that mates with the second guide groove is provided inside a support frame. An operating groove is provided on one side of the support frame, and the orientation of the operating groove matches that of the reset mechanism. A cover plate is provided on the support frame, and the cover plate is slidably connected to the operating groove. The locking mechanism also includes a first telescopic cylinder, a second telescopic cylinder, and a locking spring. A left locking plate and a right locking plate are provided at opposite ends of the first and second telescopic cylinders, and the first and second telescopic cylinders are respectively hinged to the reset mechanism. The two ends of the locking spring are respectively connected to the left and right locking plates, and the locking spring is in a compressed state.
[0011] Based on the structure of the above-mentioned tip collision buffer device for PRT line shunt, the elastic element is a buffer spring. The buffer spring is placed in the middle area inside the support frame, with one end fixedly connected to the inner bottom surface of the support frame and the other end fixedly connected to the outer bottom surface of the movable frame. The buffer spring is in a free state and can be compressed or restored as the movable frame moves.
[0012] Based on the above-mentioned structure of a tip collision buffer device for a PRT line shunt, the contact surface between the movable frame and the head buffer foam has a fixing groove and a collision monitoring box fixing position. A strip pressure switch is arranged at the contact point between the outer side of the head buffer foam and the vehicle bumper. The contact surface between the head buffer foam and the movable frame has a boss. Structural adhesive is applied to the boss and the contact surface, and it is embedded in the fixing groove of the movable frame to form an adhesive fixation. A connecting column is embedded in the head buffer foam. One end of the connecting column has an umbrella-shaped structure, and the other end has a pair of threaded stepped columns. The end with the umbrella-shaped structure is embedded in the head buffer foam, and the threaded stepped column end is fixedly connected to the top of the movable frame.
[0013] Based on the structure of the aforementioned tip collision buffer device for PRT line shunt, a roller is installed on the left and right sides of the bottom of the movable frame, allowing the locking mechanism to slide along the second guide rail inside the support frame. A rectangular through hole for the locking mechanism to slide is provided in the width direction of the movable frame, and a rectangular hand hole for the reset mechanism to operate is provided in the height direction of the movable frame. The rectangular hand hole is matched with the position of the operating groove. Limiting strips are fixed at both ends of the rectangular through hole of the movable frame to prevent the left and right locking plates from slipping.
[0014] Based on the structure of the above-mentioned tip collision buffer device for PRT line shunt, the first telescopic cylinder and the second telescopic cylinder are embedded in each other. The opening end of the first telescopic cylinder is provided with a concave annular shoulder, and the opening end of the second telescopic cylinder is provided with a convex annular shoulder. The annular shoulders are engaged to form axial sliding between the two telescopic cylinders. The first telescopic cylinder, the second telescopic cylinder and the locking spring are coaxial.
[0015] Based on the above-mentioned structure of a tip collision buffer device for a PRT line shunt, the reset mechanism includes a left support column, a left connecting rod, a reset turntable, a guide rod, a right connecting rod, a right support column, and a limiting plate. The left support column passes through the radial through hole of the first telescopic cylinder, with one end shoulder inserted into the axial groove of the inner cylinder of the first telescopic cylinder, and the other end hinged to the left connecting rod. The first telescopic cylinder and the left connecting rod are supported by a first sleeve. The other end of the left connecting rod is hinged to the reset turntable. The central hole of the reset turntable is movably connected to the guide rod, allowing the reset turntable to rotate around the guide rod. The other end shoulder of the guide rod is inserted into the axial stepped groove inside the second telescopic cylinder, forming a groove along the guide rod and... The two sleeves are axially slidably connected on their respective shaft surfaces; the guide rod passes through the central hole of the limiting plate, and the stepped shaft in the central hole area of the limiting plate is engaged in the axial stepped groove outside the first telescopic cylinder. The stepped shaft supports the first telescopic cylinder and the reset turntable. The upper and lower ends of the limiting plate are fixedly connected to the upper and lower sides of the rectangular hand hole of the moving frame. One end of the right connecting rod is hinged to the reset turntable, and the other end is hinged to one end of the right support column. The right support column passes through the radial through hole of the second telescopic cylinder, and one end of its shoulder is engaged in the axial stepped groove inside the second telescopic cylinder. The other end is hinged to the right connecting rod. The second telescopic cylinder and the right connecting rod are supported by the second sleeve. The other end of the right connecting rod is hinged to the reset turntable.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this solution are: 1) In this invention, the head buffer foam at the tip of the vehicle collision has an embedded connecting column with an umbrella-shaped plate. The two sides are in contact with the locking strip. When the vehicle collides, the lateral force is decomposed to the axial direction to the maximum extent, and the locking mechanism is pushed to slide in the direction of the guide groove in the support frame. The buffer spring in the free state is squeezed by the moving frame of the locking mechanism, and effectively buffers the impact force generated by the collision through its own deformation and collapse.
[0017] 2) In this invention, the left and right locking plates in the locking mechanism are connected to the locking springs compressed inside the sleeve through two telescopic cylinders. During the directional movement of the locking mechanism under force, the left and right locking plates are constantly locked with the locking grooves on both sides of the support frame by the reaction force of the locking springs, so as to avoid the buffer springs rebounding after being compressed and generating a reaction force on the vehicle body. 3) In this invention, the upper part of the support frame has an operating groove and a sliding cover plate. A reset mechanism can be operated through the operating groove. The reset mechanism is hinged to two telescopic cylinders. Slowly rotating the reset turntable clockwise compresses the locking spring, causing the two telescopic cylinders to move towards each other, releasing the locked left and right locking plates and the locking grooves on both sides of the support frame, restoring the buffer spring to its free state, thereby quickly restoring the tip impact buffer device. For head buffer foam damaged during the collision, the tip impact buffer device can be partially replaced by manually loosening the fastening nut of the connecting column through the operating groove. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall structure of the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 2 An enlarged structural schematic diagram of the tip collision buffer device at the PRT line shunt provided by the present invention; Figure 3 A schematic diagram showing that the tip collision buffer device at the PRT line shunt provided by the present invention was not triggered by a collision. Figure 4 This is a schematic diagram of the tip collision buffer device at the PRT line shunt provided by the present invention after a collision triggering the tip collision buffer device. Figure 5 A three-dimensional structural schematic diagram of the tip collision buffer device at the PRT line shunt provided by the present invention; Figure 6 A schematic diagram of the internal structure of the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 7 A schematic diagram of the locking mechanism and reset mechanism before their operation in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 8 A schematic diagram of the locking mechanism and reset mechanism after operation in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 9 A three-dimensional structural diagram of the locking mechanism and the reset mechanism in the tip collision buffer device at the PRT line shunt provided by the present invention; Figure 10 for Figure 7 A schematic diagram of the cross-sectional structure of CC. Figure 11 A schematic diagram showing the positional relationship of the umbrella-shaped structure in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 12 A cross-sectional schematic diagram of the umbrella-shaped structure in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 13 A schematic diagram of the reset mechanism in the tip collision buffer device at the PRT line shunt provided by the present invention; Figure 14 A schematic diagram of the support frame in the tip collision buffer device at the PRT line shunt provided by the present invention; Figure 15 A schematic diagram of the moving frame in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 16A schematic diagram of the structure of the foam navigation plate in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 17 A schematic diagram of the head buffer foam in the tip collision buffer device at the PRT line shunt provided by the present invention. Figure 18 A schematic diagram of the structure of the first telescopic cylinder in the tip collision buffer device at the PRT line shunt provided by the present invention; Figure 19 A schematic diagram of the structure of the second telescopic cylinder in the tip collision buffer device at the PRT line shunt provided by the present invention; The markings in the diagram are as follows: 0, curb; 1, buffer mechanism; 2, locking mechanism; 3, reset mechanism; 4, contour assembly; 5, strip pressure switch; 6, collision monitoring box; 1.1, support frame; 1.1.1, first guide groove; 1.1.2, second guide rail; 1.1.3, operating groove; 1.1.4, circular handhole; 1.1.5 1.1 Locking slot; 1.2 Head cushioning foam; 1.2.1 Boss; 1.3 Cushioning spring; 1.4 Cover plate; 1.5 Connecting column; 1.5.1 Umbrella-shaped structure; 1.5.2 Stepped column; 2.1 Moving frame; 2.1.1 Second guide slot; 2.1.2 Rectangular through hole; 2.1.3 Third guide rail; 2.1.4 Rectangular hand hole; 2.1.5 Fixing slot; 2.1.6 Wire hole; 2.2 Limiting strip; 2.3 Roller; 2.4 Left locking plate; 2.5 Right locking plate; 2.6 First telescopic cylinder 2.6.1 External axial stepped groove of the cylinder; 2.7 Second telescopic cylinder; 2.7.1 Internal axial stepped groove of the cylinder; 2.8 Locking spring; 2.9 Third guide groove; 3.1 Left support column; 3.2 Left connecting rod; 3.3 Reset turntable; 3.4 Guide rod; 3.5 Right connecting rod; 3.6 Right support column; 3.7 Limiting plate; 3.7.1 Stepped shaft; 3.8 First sleeve; 3.9 Second sleeve; 4.1 Triangular column-shaped foam aluminum block; 4.2 Foam navigation plate; 4.2.1 First guide rail; 4.3 Locking strip. Detailed Implementation
[0019] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0020] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0021] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a predetermined orientation, or be constructed and operated in a predetermined orientation. Therefore, they should not be construed as limitations on this invention.
[0022] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0023] Example 1 The following is in conjunction with the appendix Figures 1-19 The invention is further illustrated by the embodiments: As described in the background section, the existing tip collision buffer device at the PRT line shunt is a one-piece polyolefin board foam that is manually cut, shaped, and layered and pasted. After it is damaged, the line restoration cycle is long. In order to achieve low-cost replacement and timely restoration of line operation, this invention proposes a tip collision buffer device for the PRT line shunt.
[0024] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a tip collision buffer device for a PRT line diversion point is specifically placed in the triangular area of the PRT vehicle traffic line diversion point. The system includes a buffer mechanism 1. The lower two sides of the support frame 1.1 in the buffer mechanism 1 have circular hand holes 1.1.4. The contact surfaces of the support frame 1.1 with the triangular area curb 0 and the road have fixing strip holes and circular holes. The fixing strip holes pass through threaded rods used to fix the triangular area curb 0 and the road. Bolts can be used to fix the support frame 1.1.4 to the road surface at the branch point of the triangular area curb 0 and the road. A buffer spring 1.3 is fixed to the inner bottom surface of the support frame 1.1. The buffer spring 1.3 is located in the middle of the support frame 1.1. When the tip collision buffer device is not working, the buffer spring 1.3 is in a free state; when the tip collision buffer device is working, the buffer spring 1.3 is in a compressed state. An operating groove 1.1.3 is provided on the upper part of the support frame 1.1. The operating groove 1.1.3 is slidably connected to the cover plate 1.4 through a sliding groove. By sliding open the cover plate 1.4, the operating reset mechanism 3 can be used to release the locking mechanism 2, restoring the buffer spring 1.3 to its free state and resetting the tip collision buffer device. The support frame 1.1 has a first guide groove 1.1.1 on its left and right sides. The first guide rail 4.2.1 on the side of the foam navigation plate 4.2 is respectively inserted into the support frame 1.1. The foam navigation plate 4.2 has a strip hole in the middle. The strip hole passes through the threaded rod fixed to the road surface. The foam navigation plate 4.2 is fixedly connected to the road surface at the branch point of the line by a pressure plate and a nut. The foam navigation plate 4.2 is located on both sides of the support frame 1.1 in the buffer mechanism 1, and is not a pointed position. The foam navigation plate 4.2 is made of foam aluminum sheet and is filled with sandbags to buffer the impact force generated by accidental collision of PRT vehicles. Its outer side has a specially made curved surface to meet the requirements of PRT vehicles to use laser sensors to detect the zero distance between the vehicle body and the curb. The moving frame 2.1 in the locking mechanism 2 has a second guide groove 2.1.1 on its side, which forms a sliding connection with the second guide rail 1.1.2 inside the support frame 1.1; a pair of rollers 2.3 are installed on the upper part of the moving frame 2.1 to achieve smooth sliding along the horizontal direction of the support frame 1.1; rectangular through holes 2.1.2 are left on the left and right sides of the moving frame 2.1, and the side of the rectangular through hole 2.1.2 has a third guide rail 2.1.3; the side of the left locking plate 2.4 and the right locking plate 2.5 has a third guide groove 2.9, which can form a transverse sliding connection along the guide rail inside the rectangular through hole 2.1.2 of the moving frame 2.1; to limit the maximum moving distance of the left locking plate 2.4 and the right locking plate 2.5, limit strips 2.2 are fixed at the lower ends of the rectangular through hole 2.1.2 of the moving frame 2.1; a rectangular hand hole 2.1.4 for the operation of the reset mechanism is provided in the height direction of the moving frame. 1.4 Matches the position of the operating slot 1.1.3; the left locking plate 2.4 is fixedly connected to the bottom plate of the first telescopic cylinder 2.6, the opening end of the first telescopic cylinder 2.6 is provided with a concave annular shoulder, which can engage with the opening end of the second telescopic cylinder 2.7, which is provided with a convex annular shoulder; the bottom plate of the second telescopic cylinder 2.7 is fixedly connected to the right locking plate 2.5, thus the left locking plate 2.4 and the right locking plate 2.5 establish an axial sliding connection through the two telescopic cylinders; the locking spring 2.8 and... Two telescopic cylinders are coaxial, and their two ends are fixedly connected to the left locking plate 2.4 and the right locking plate 2.5 respectively. The locking teeth of the left locking plate 2.4 and the right locking plate 2.5 are both right-angled triangles. Since the locking spring 2.8 is always in a compressed state, the lower ends of the left locking plate 2.4 and the right locking plate 2.5 abut against the limiting strip 2.2, and the locking teeth extend out of the left and right sides of the moving frame 2.1 and fit into the locking grooves 1.1.5 on the two sides of the inner side of the support frame 1.1. The upper part of the movable frame 2.1 is provided with a wire hole 2.1.6, and the upper surface is reserved with a groove for fixing the collision monitoring box 6. The connecting wire of the collision monitoring box 6 is introduced into the fixed position of the collision monitoring box 6 through the wire hole 2.1.6. After the collision monitoring box 6 is wired and fixed, it can monitor whether there is any shaking of the tip collision buffer device. After the shaking is detected, the collision monitoring box 6 is triggered and the upstream line coil is blocked through the AVP system, thereby stopping the upstream vehicle. The bottom surface of the head buffer foam 1.2 is provided with a boss 1.2.1 that can be embedded in the fixing groove 2.1.5 on the upper surface of the movable frame 2.1. The contact surface between the fixing groove 2.1.5 and the boss 1.2.1 is coated with structural adhesive to form the head buffer foam 1.2 and the movable frame 2. 1. Adhesive fixing; The head buffer foam 1.2 is embedded with a connecting post 1.5. One end of the connecting post 1.5 with an umbrella-shaped structure 1.5.1 is embedded in the head buffer foam 1.2. The umbrella-shaped structure 1.5.1 can resist pulling and effectively resist the shearing effect of lateral force during vehicle collision; The other end of the connecting post 1.5 is provided with a pair of threaded stepped posts 1.5.2. The threaded posts pass through the pre-drilled holes at the top of the moving frame 2.1 and are fixedly connected to the head buffer foam 1.2 and the moving frame 2.1 by bolts; The head buffer foam 1.2 is provided with locking strips 4.3 on both sides to resist lateral force. The locking strips 4.3 are fixedly connected to the surface of the line shunt. The height of the locking strips 4.3 does not affect the vehicle's driving. To meet the requirement of PRT vehicles using laser sensors to detect the zero distance between the vehicle body and the curb, and to maintain the continuity of the laser scanning path, triangular prism-shaped aluminum foam blocks 4.1 are provided between the left and right sides of the moving frame 2.1 and the foam navigation plate 4.2. The triangular prism-shaped aluminum foam blocks 4.1 are attached to the track surface and have grooves. The head buffer foam 1.2 slides directionally along the grooves of the triangular prism-shaped aluminum foam blocks 4.1, and the contact surfaces are coated with grease. When the tip collision buffer device is not working, the locking spring 2.8 is always in a compressed state, the locking teeth at the lower ends of the left locking plate 2.4 and the right locking plate 2.5 are engaged with the locking grooves 1.1.5 on both sides of the inner support frame 1.1, the buffer spring 1.3 is in a free state, the curved surfaces on both sides of the tip collision buffer device are continuous, which supports the vehicle to use laser sensors to detect the distance between the vehicle body and the curb 0 distance, ensuring that the vehicle is on the correct driving trajectory; When the head cushioning foam 1.2 is impacted by a vehicle, the tip impact buffer device is triggered. The collision monitoring box 6 fixed to the upper surface of the moving frame 2.1 and the strip pressure switch 5 arranged on the surface of the head cushioning foam 1.2 are also triggered, respectively stopping the upstream vehicle and the colliding vehicle via the AVP system and wireless network. Before the vehicle fully brakes, the head cushioning foam 1.2 can eliminate a small portion of the lateral force from the impact force decomposition using the connecting column 1.5 and the locking strip 4.3. For the majority of the axial force from the impact force decomposition, the axial force pushes the moving frame 2.1 to slide along the second guide rail 1.1.2 inside the support frame 1.1. The locking teeth of the left locking plate 2.4 and the right locking plate 2.5, after being subjected to axial force, decompose into lateral force. The lateral force compresses the locking spring 2.8, and the left locking plate 2.4 and the right locking plate 2.5 briefly slide along the moving frame. The rectangular through hole 2.1.2 of the moving frame 2.1 slides laterally inward, and the locking teeth of the left locking plate 2.4 and the right locking plate 2.5 disengage from the locking grooves 1.1.5 on both sides of the inner side of the support frame 1.1. The sliding moving frame 2.1 compresses the buffer spring 1.3, which absorbs the collision energy until the vehicle completes braking, reducing the damage to the vehicle during the entire braking process. When the compression stroke of the moving frame 2.1 stops, the left locking plate 2.4 and the right locking plate 2.5 are subjected to the continuous rebound force of the buffer spring 1.3 under compression, and engage with the locking grooves 1.1.5 on both sides of the inner side of the support frame 1.1, thereby locking the position of the moving frame 2.1 and the head buffer foam 1.2. The entire tip collision buffer device does not return to its original position due to the rebound force of the buffer spring 1.3 under compression. After the head cushioning foam 1.2 is impacted by a vehicle and the vehicle completes braking, on-site personnel can manually maneuver the vehicle back to the correct driving path using a handheld device. For the tip impact cushioning device to be restored, after confirming that the vehicle has been removed, the cover plate 1.4 on the upper part of the support frame 1.1 can be slid to expose the reset mechanism 3. The two ends of the left connecting rod 3.2 and the right connecting rod 3.5 in the reset mechanism 3 are respectively hinged to the reset turntable 3.3, and the other ends of the left connecting rod 3.2 and the right connecting rod 3.5 are respectively hinged to the left support column 3.1 and the right support column 3.6. The shoulders of the other ends of the left support column 3.1 and the right support column 3.6 respectively engage in the stepped grooves of the first telescopic cylinder 2.6 and the second telescopic cylinder 2.7 to form a hinged connection, and the first sleeve 3.8 and the second sleeve 3.9 are used respectively. Provides vertical support; one end of the guide rod 3.4 is threaded and inserted into the central hole of the reset turntable 3.3, and the end is fixedly connected by a thread. The reset turntable 3.3 can rotate around the guide rod 3.4. The other end of the guide rod 3.4 is shouldered and inserted into the axial stepped groove 2.7.1 inside the second telescopic cylinder 2.7, forming the guide rod 3.4 sliding along the fixed axis of the two telescopic cylinders. In order to restrict the lateral movement of the reset turntable 3.3, the reset mechanism 3 is provided with a limiting plate 3.7. The stepped shaft 3.7.1 in the central hole area of the limiting plate 3.7 is inserted into the axial stepped groove 2.6.1 outside the first telescopic cylinder 2.6, and supports the first telescopic cylinder 2.6 and the reset turntable 3.3. The upper and lower ends of the limiting plate 3.7 are fixedly connected to the upper and lower sides of the operating groove 1.1.3 of the support frame 1.1. Rotating the reset turntable 3.3 slowly clockwise causes the left connecting rod 3.2 and right connecting rod 3.5 to pull the left support column 3.1 and right support column 3.6 towards each other. The left support column 3.1 and right support column 3.6 then pull the first telescopic cylinder 2.6 and the second telescopic cylinder 2.7 towards each other along the axis. The reset turntable 3.3 is vertically supported by the guide rod 3.4 and laterally limited by the limiting plate 3.7. The reset turntable 3.3 remains in a fixed position relative to the moving frame 2.1. The outer axial stepped groove 2.6.1 and the inner shaft of the two telescopic cylinders... The stepped grooves 2.7.1 slide relative to the guide rods 3.4. The first telescopic cylinder 2.6 and the second telescopic cylinder 2.7, which move in opposite directions, jointly compress the locking spring 2.8. At the same time, the left locking plate 2.4 and the right locking plate 2.5 slide laterally towards each other along the rectangular through hole 2.1.2 of the moving frame 2.1. The locking teeth of the left locking plate 2.4 and the right locking plate 2.5 disengage from the locking grooves 1.1.5 on both sides of the inner side of the support frame 1.1. The buffer spring 1.3 gradually returns to its free state, thereby quickly restoring the tip collision buffer device.
[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A tip collision buffer device for a PRT line shunt, characterized in that: it includes a buffer mechanism (1), a locking mechanism (2), and a reset mechanism (3); the buffer mechanism (1) is provided with a support frame (1.1) and an elastic element; the elastic element is movable along the length direction of the support frame (1.1), the locking mechanism (2) is disposed on the elastic element, and the support frame (1.1) is provided with a locking groove that cooperates with the locking mechanism (2). 1.1.5), the locking mechanism (2) can extend and retract along the width direction of the support frame (1.1) under the action of the reset mechanism (3), and cooperate with the limiting structure to lock and unlock during the extension and retraction process.
2. A tip collision buffer device for a PRT line shunt as described in claim 1, characterized in that: It also includes a contour component (4), which includes a triangular column-shaped aluminum foam block (4.1) and a foam navigation plate (4.2); the foam navigation plate (4.2) is disposed on the left and right sides of the buffer mechanism (1); the triangular column-shaped aluminum foam block (4.1) is disposed on the line surface between the locking mechanism (2) and the foam navigation plate (4.2).
3. A tip collision buffer device for a PRT line shunt as described in claim 2, characterized in that: The bottom of the contact surface between the triangular columnar aluminum foam block (4.1) and the locking mechanism (2) is provided with a grease-coated groove. The top of the locking mechanism (2) is provided with a head buffer foam (1.2). The locking mechanism (2) and the head buffer foam (1.2) can slide directionally along the groove on the triangular columnar aluminum foam block (4.1). A locking strip (4.3) is also provided on the ground at the line diversion point. The bottom of the outer contour surface of the head buffer foam (1.2) is in close contact with the locking strip (4.3). The contour component (4) and the side contour of the head buffer foam (1.2) together constitute the curb (0) body at the line diversion point.
4. A tip collision buffer device for a PRT line shunt as described in claim 3, characterized in that: The support frame (1.1) is fixedly connected to the curb (0) and the contact surface at the traffic diversion point. The left and right sides of the support frame (1.1) are each provided with a first guide groove. 1.1.1), the foam navigation plate (4.2) is provided with a first guide rail (4.2.1) that cooperates with the first guide groove (1.1.1). The first guide rail (4.2.1) of the foam navigation plate (4.2) is slidably connected to the first guide groove (1.1.1). The bottom surface of the foam navigation plate (4.2) is fixedly connected to the contact surface at the line diversion point, and the other side is fixedly connected to the side of the curb (0).
5. A tip collision buffer device for a PRT line shunt as described in claim 4, characterized in that: The locking mechanism (2) includes a movable frame (2.1), and a second guide groove is provided around the movable frame (2.1). 2.1.1), a second guide rail is provided inside the support frame (1.1) to cooperate with the second guide groove (2.1.1). 1.1.2), the support frame (1.1) is provided with an operation groove (1.1.3) on one side, and the orientation of the operation groove (1.1.3) matches the reset mechanism (3); a cover plate (1.4) is provided on the support frame (1.1), and the cover plate (1.4) is slidably connected to the operation groove (1.1.3); the locking mechanism (2) further includes a first telescopic cylinder (2.6), a second telescopic cylinder (2.7) and a locking spring (2.8); a left locking plate (2.4) and a right locking plate (2.5) are provided at opposite ends of the first telescopic cylinder (2.6) and the second telescopic cylinder (2.7), and the first telescopic cylinder (2.6) and the second telescopic cylinder (2.7) are respectively hinged to the reset mechanism (3); the two ends of the locking spring (2.8) are respectively connected to the left locking plate (2.4) and the right locking plate (2.5), and the locking spring (2.8) is in a compressed state.
6. A tip collision buffer device for a PRT line shunt as described in claim 5, characterized in that: The elastic element is a buffer spring (1.3). The buffer spring (1.3) is placed in the middle area inside the support frame (1.1). One end is fixedly connected to the inner bottom surface of the support frame (1.1), and the other end is fixedly connected to the outer bottom surface of the movable frame (2.1). The buffer spring (1.3) is in a free state and can be compressed or restored as the movable frame (2.1) moves.
7. A tip collision buffer device for a PRT line shunt as described in claim 6, characterized in that: The contact surface between the movable frame (2.1) and the head cushion foam (1.2) has a fixing groove (2.1.5) for fixing the collision monitoring box (6). A strip pressure switch (5) is arranged at the contact point between the outer side of the head cushion foam (1.2) and the vehicle bumper. The contact surface between the head cushion foam (1.2) and the movable frame (2.1) has a boss (1.2.1). The boss (1.2.1) and the contact surface are coated with structural adhesive and embedded in the fixing groove (2.1.5) of the movable frame (2.1) to form an adhesive fixation. A connecting post (1.5) is embedded in the head cushion foam (1.2). One end of the connecting post (1.5) has an umbrella-shaped structure. 1.5.1), the other end is provided with a pair of threaded stepped columns (1.5.2), one end of which has an umbrella-shaped structure (1.5.1) is embedded in the head cushioning foam (1.2), and one end of the threaded stepped column (1.5.2) is fixedly connected to the top of the movable frame (2.1).
8. A tip collision buffer device for a PRT line shunt according to claim 7, characterized in that: A roller (2.3) is installed on the left and right sides of the bottom of the movable frame (2.1) so that the locking mechanism (2) can slide along the second guide rail (1.1.2) inside the support frame (1.1). A rectangular through hole (2.1.2) for the locking mechanism (2) to slide is provided in the width direction of the movable frame (2.1), and a rectangular hand hole (2.1.4) for the reset mechanism (3) to operate is provided in the height direction of the movable frame (2.1). The rectangular hand hole (2.1.4) matches the position of the operating groove (1.1.3). Limiting strips (2.2) for preventing the left locking plate (2.4) and the right locking plate (2.5) from slipping are fixed at both ends of the rectangular through hole (2.1.2) of the movable frame (2.1).
9. A tip collision buffer device for a PRT line shunt as described in claim 8, characterized in that: The first telescopic cylinder (2.6) and the second telescopic cylinder (2.7) are embedded in each other. The opening end of the first telescopic cylinder (2.6) is provided with a concave annular shoulder, and the opening end of the second telescopic cylinder (2.7) is provided with a convex annular shoulder. The annular shoulders engage with each other to form axial sliding between the two telescopic cylinders. The first telescopic cylinder (2.6), the second telescopic cylinder (2.7) and the locking spring (2.8) are coaxial.
10. A tip collision buffer device for a PRT line shunt according to any one of claims 5 to 9, characterized in that: The reset mechanism (3) includes a left support column (3.1), a left connecting rod (3.2), a reset turntable (3.3), a guide rod (3.4), a right connecting rod (3.5), a right support column (3.6), and a limiting plate (3.7); the left support column (3.1) passes through the radial through hole of the first telescopic cylinder (2.6), one end of its shoulder is inserted into the axial groove of the inner cylinder of the first telescopic cylinder (2.6), and the other end is hinged to the left connecting rod (3.2). The first telescopic cylinder (2.6) and the left connecting rod (3.2) are supported by a first sleeve (3.8); the other end of the left connecting rod (3.2) is connected to the reset turntable (3.3). 3.3) Hinged connection; the center hole of the reset turntable (3.3) is movably connected to the guide rod (3.4), and the reset turntable (3.3) can rotate around the guide rod (3.4); the shoulder of the other end of the guide rod (3.4) is inserted into the axial stepped groove (2.7.1) inside the second telescopic cylinder (2.7), forming a fixed axial sliding connection along the axial surface where the guide rod (3.4) and the double sleeve are located; the guide rod (3.4) passes through the middle hole of the limiting plate (3.7), and the stepped shaft (3.7.1) in the middle hole area of the limiting plate (3.7) is inserted into the axial stepped groove outside the first telescopic cylinder (2.6). 2.6.1), the stepped shaft (3.7.1) supports the first telescopic cylinder (2.6) and the reset turntable (3.3), the upper and lower ends of the limiting plate (3.7) are fixedly connected to the upper and lower sides of the rectangular hand hole (2.1.4) of the moving frame (2.1); one end of the right connecting rod (3.5) is hinged to the reset turntable (3.3), and the other end is hinged to one end of the right support column (3.6); the right support column (3.6) passes through the radial through hole of the second telescopic cylinder (2.7), and one end of its shoulder is inserted into the axial stepped groove inside the second telescopic cylinder (2.7). 2.7.1), the other end is hinged to the right connecting rod (3.5), and the second telescopic cylinder (2.7) is supported by the second sleeve (3.9) between the right connecting rod (3.5); the other end of the right connecting rod (3.5) is hinged to the reset turntable (3.3).