A prefabricated road crash cushion

Abstract

The present invention relates to a assembled road anti-collision pad, which includes a collision mechanism and a fixing mechanism arranged along the lane direction. A corrugated plate is respectively arranged on both sides of the collision mechanism, and the corrugated plate is slidably connected with the fixing mechanism. A plurality of energy absorption components are arranged in a rectangular array between the two corrugated plates. Each of the energy absorption components includes a plurality of energy absorption units arranged side by side. A single energy absorption unit is composed of eight movable plates spliced by hinges. Thus, in practice, the width of the energy absorption component, that is, the overall width, can be reduced when impacted, so as to achieve a buffering effect without damaging the structure. Slots are opened on two movable plates arranged in parallel in each energy absorption unit, and a linkage rod is commonly inserted into a plurality of slots. A compression spring I is respectively arranged at both axial ends of the linkage rod. By limiting the position of the compression spring I, the device can be actively reset as a whole when the impact force is withdrawn, and the anti-deformation force of a single energy absorption unit can also be determined.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic protection devices, and particularly to a prefabricated road crash cushion. Background Art

[0002] At the starting end of the median strip of expressways or arterial first-class highways, at the diverging ends of the main line and ramps, etc., crash cushions are generally provided. The crash cushion is connected to the triangular transition end of the road, and the axis of the crash cushion overlaps with the center line of the intersection angle of the road routes on both sides. The function of the crash cushion is to prevent serious deformation of the vehicle during a collision and cause casualties.

[0003] Most existing crash cushions are provided with a collision end, an energy-absorbing component, and a fixed end along the vehicle traveling direction. Among them, the fixed end is fixed to the ground by grounding rivets or screws, and the energy-absorbing component is used to control the distance between the fixed end and the collision end, so that when the vehicle impacts the collision end, the deformation amount generated by the energy-absorbing component can not only protect the vehicle and decelerate it, but also avoid the vehicle being damaged due to excessive deceleration.

[0004] In the existing technology device, the energy-absorbing component is mostly composed of several energy-absorbing components combined. Each energy-absorbing component is a rigid plate with a certain arc. The convex parts of adjacent energy-absorbing components are in contact with each other, so that in practice, when a collision occurs, several energy-absorbing components can deform and generate relative displacement to achieve energy absorption and produce a buffering effect.

[0005] Since the energy-absorbing component is a rigid plate with a certain arc and its energy-absorbing effect mainly relies on the deformation of the energy-absorbing component, the impact received by the collision end during use can easily cause an irreversible deformation process of the energy-absorbing component. At this time, the energy-absorbing component needs to be replaced. However, in order to ensure the structural strength of the existing device, most energy-absorbing components are not provided with a disassembly structure, and generally, it is necessary to disassemble them and send them back to the factory for maintenance. This makes the existing device extremely uneconomical and inconvenient to use. At the same time, due to the influence of the working environment, wind and sun exposure can easily affect the strength of the rigid plate and reduce its protection performance, and it itself has a high demand for easy disassembly. Therefore, we believe that a prefabricated road crash cushion that can disassemble the energy-absorbing component and can disassemble it quickly and conveniently is needed. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a prefabricated road crash cushion, which has the advantages of being reusable, and even if the energy-absorbing component needs to be replaced due to deformation and service life, it can be replaced conveniently, solving the disadvantages that the existing technology device can only be used once after being impacted, the energy-absorbing component needs to be replaced as a whole and the replacement is inconvenient.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An assembled road anti-collision cushion includes a collision mechanism and a fixing mechanism arranged along the lane direction. The fixing mechanism is fixed to the ground by ground screws. A corrugated plate is detachably connected to each of the two side ends of the collision mechanism. The two corrugated plates are symmetrically arranged. A plurality of sliding grooves are formed at the adjacent ends of the two corrugated plates. The plurality of sliding grooves are arranged at equal intervals along the height direction of the corrugated plate. A plurality of energy absorption components are arranged in a rectangular array between the two corrugated plates. Each energy absorption component is inserted into the corresponding sliding groove. Each energy absorption component includes a plurality of energy absorption units. Each energy absorption unit is composed of eight movably connected plates spliced together. Adjacent energy absorption units are abutted by the movable plates. And, slots are formed on the abutting movable plates of adjacent energy absorption units. A linkage rod is inserted into the plurality of slots together. A length conversion mechanism is sleeved at each end of the linkage rod. One end of the length conversion mechanism is fixedly connected with a compression spring I. The other end of the length conversion mechanism is embedded into the sliding groove and abuts against the corrugated plate. The compression spring I is sleeved outside the linkage rod. The other axial end of the compression spring I abuts against the adjacent energy absorption unit. A limiting groove is formed on the corrugated plate. Limiting plates are respectively arranged corresponding to the limiting grooves at the remote ends of the two corrugated plates. The limiting plates are detachably connected to the fixing mechanism. Preferably, the length conversion mechanism includes a conversion unit. And, the conversion unit has the same structure as the energy absorption unit. Adjusting plates are respectively arranged at the remote ends of the two movable plates that are not adjacent to the movable plate provided with the slot in the conversion unit. Steel wires are respectively fixedly connected to the adjacent ends of the two adjusting plates. Installation grooves are formed on the movable plates for the steel wires. A tightening member is connected between the two steel wires.

[0009] Preferably, the tightening member includes a rotating shaft. Two limiting rings are coaxially and fixedly connected to the rotating shaft. The steel wire is fixedly connected to the rotating shaft between the two limiting rings. An anti-retreat member is arranged on the rotating shaft. A rotating member is also arranged on the rotating shaft. An installation frame is detachably connected to the inner side of the conversion unit. The rotating shaft is rotatably connected to the installation frame.

[0010] Preferably, the anti-retreat member includes a ratchet wheel coaxially and fixedly connected to the rotating shaft. A ratchet pawl is arranged above the ratchet wheel. The middle position of the ratchet pawl is rotatably connected to the installation frame. One end of the ratchet pawl is clamped into the ratchet teeth. A compression spring II is arranged below the other end of the ratchet pawl. The other axial end of the compression spring II is fixedly connected to the installation frame.

[0011] Preferably, the center line of the conversion unit is perpendicular to the center line of the energy absorption unit. The longitudinal section of the installation rod is square.

[0012] Preferably, the number of the plurality of energy absorption components in the same vertical plane is not more than four and not less than one.

[0013] Preferably, the collision mechanism includes a mounting plate. The longitudinal section of the mounting plate is L-shaped. A positioning plate is fixedly connected to the upper side of the horizontal end of the mounting plate. A positioning groove is formed in the positioning plate, and a pressure plate is inserted into the positioning groove. The pressure plate is of a wavy structure, and the number of wave crests of the pressure plate is the same as the number of energy absorption units in a single energy absorption component. The wave crests of the pressure plate are in contact with the corresponding movable plates. An energy absorption cylinder is arranged between the pressure plate and the mounting plate, and the energy absorption cylinder is filled with energy absorption materials.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] In the present invention, the energy absorption component is split from a single entity into eight energy absorption plates hinged to each other, so that in practice, the present application can not only deform when being impacted, but also reset after the impact force is withdrawn, thereby enabling its reusable use.

[0016] In the present invention, the position of the compression spring I is limited and the total length of a single energy absorption component is limited through the length conversion mechanism. This not only can change the state between it and the corrugated plate by adjusting the length of a single energy absorption component to realize the disassembly process of a single energy absorption component, but also can control the anti-deformation ability of a single energy absorption unit, so as to control the buffering effect of the device on the collided vehicle and be applicable to lanes in different traffic environments. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the connection between the collision mechanism and the corrugated plate of the present invention;

[0019] Figure 3 is a schematic diagram of the connection between the fixing mechanism and the corrugated plate of the present invention;

[0020] Figure 4 is a schematic diagram of the overall structure of the energy absorption component 2 of the present invention;

[0021] Figure 5 is a schematic diagram of the overall structure of the energy absorption unit of the present invention;

[0022] Figure 6 is a schematic diagram of the overall structure of the conversion unit of the present invention;

[0023] Figure 7 is a schematic diagram of the overall structure of the length conversion mechanism of the present invention;

[0024] Figure 8 is a schematic diagram of the connection between the anti-retreat component and the tightening component of the present invention;

[0025] Figure 9 is a schematic diagram of the connection between the rotating shaft and the steel wire rope of the present invention;

[0026] Figure 10 Schematic diagram of a rectangular array of multiple energy absorption components 2 of the present invention;

[0027] Figure 11 Schematic diagram of the transformation unit replacing the energy absorption unit of the present invention;

[0028] Figure 12 Overall schematic diagram of the collision mechanism of the present invention;

[0029] Figure 13 Schematic diagram of the connection between the mounting plate and the positioning plate of the present invention;

[0030] Figure 14 Overall structural schematic diagram of the corrugated plate of the present invention.

[0031] In the figure: 1, collision mechanism; 11, mounting plate; 12, energy absorption cylinder; 13, pressure plate; 14, positioning plate; 2, energy absorption component; 21, length transformation mechanism; 211, transformation unit; 212, mounting groove; 213, mounting frame; 214, tightening member; 2141, limiting ring; 2142, rotating member; 2143, rotating shaft; 215, anti-retreat member; 2151, ratchet; 2152, pawl; 2153, compression spring II; 216, steel wire rope; 217, adjusting plate; 22, compression spring I; 23, linkage rod; 24, energy absorption unit; 25, slot; 3, fixing mechanism; 4, corrugated plate; 5, sliding groove; 6, limiting groove; 7, limiting plate. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Please refer to Figure 1, A assembled road anti-collision pad. Consistent with the traditional ones, the present application also has a collision mechanism 1, an energy absorption component 2, and a fixing mechanism 3 arranged along the lane direction. Among them, the energy absorption component 2 is composed of multiple energy absorption components 2 arranged side by side along the lane direction. The energy absorption component 2 is used to buffer the collision mechanism 1, ensuring that when the collision mechanism 1 is impacted, it can not only move relative to each other to play a role in hindering and protecting the safety of the vehicle and the driver and passengers, but also limit the relative position movement distance to avoid insufficient deceleration effect on the vehicle.

[0035] The fixing mechanism 3 is used to fix the device to the ground to ensure that it will not shift relative to the ground.

[0036] Specifically, the fixing mechanism 3 includes a ground screw embedded in the ground and an L-shaped plate. A through hole is provided on the L-shaped plate for the ground screw so that the ground screw can be inserted into the through hole, ensuring that the L-shaped plate, that is, the entire fixing mechanism 3, will not move relative to each other.

[0037] Please refer to Figure 2 、 Figure 14 , Different from the prior art devices, in the present application, a corrugated plate 4 is detachably connected to the front and rear ends of the collision mechanism 1 respectively. The corrugated plate 4 can be detachably connected to the collision mechanism 1 in the form of cooperation between a screw and a nut, so that the collision mechanism 1 can be disassembled from the corrugated plate 4 during transportation, and the detachable connection also enables separate replacement when the corrugated plate 4 and the collision mechanism 1 are deformed and do not meet the expected settings in practice, thereby reducing the replacement cost.

[0038] The energy absorption component 2 is located between the two corrugated plates 4. A single energy absorption component 2 is slidably connected to the corrugated plate 4. In practice, since the position of the fixing mechanism 3 remains unchanged, when the collision mechanism 1 is impacted, the displacement distances of the multiple energy absorption components 2 on the horizontal level are not equal. Specifically, since the multiple energy absorption components 2 will all be deformed by the force, the closer the energy absorption component 2 is to the fixing mechanism 3, the smaller the moving distance. And since the collision mechanism 1 abuts against the energy absorption component 2 farthest from the fixing mechanism 3 and the moving states of the collision mechanism 1 and the corrugated plate 4 are the same, it is necessary to slidably connect the corrugated plate 4 to the fixing mechanism 3 and slidably connect a single energy absorption component 2 to the corrugated plate 4 to avoid travel conflicts between the corrugated plate 4, the fixing mechanism 3, and the energy absorption component 2 when the collision mechanism 1 is impacted.

[0039] Specifically, a chute 5 is provided along the length direction of the corrugated plate 4, and the energy absorption component 2 is embedded in the chute 5 to realize the sliding connection between the energy absorption component 2 and the corrugated plate 4.

[0040] Due to the existence of the chute 5, a protrusion can also be provided on the L-shaped plate in the fixing mechanism 3 to realize the sliding connection between the fixing mechanism 3 and the corrugated plate 4.

[0041] Please refer to Figure 3 and Figure 14 , since the corrugated plate 4 is detachably connected to the collision mechanism 1, one side of the corrugated plate 4 can be fixed. To further limit the corrugated plate 4, so that it can only move linearly relative to the fixing mechanism 3 even under external force impact, a limiting groove 6 is opened at one end of the corrugated plate 4 close to the fixing mechanism 3. Limiting plates 7 are provided at the far ends of the two corrugated plates 4 for the limiting groove 6. The relative distance between the corrugated plate 4 and the fixing mechanism 3 is limited by the limiting plates 7, so that it can only move linearly relative to the fixing mechanism 3. Specifically, the limiting plate 7 is detachably connected to the fixing mechanism 3 to limit the position of the limiting plate 7, that is, the distance between the limiting plate 7 and the fixing mechanism 3. At the same time, the detachable connection of the limiting plate 7 also enables the corrugated plate 4 and the fixing mechanism 3 to be disassembled. Specifically, the limiting plate 7 and the fixing mechanism 3 can be detachably connected by screws and inserting rods, and the screw rods and inserting rods penetrate through the limiting groove 6.

[0042] Please refer to Figure 1 and Figure 2 and Figure 10 , multiple energy absorption components 2 are arranged in a rectangular array, so as to further reduce the requirements for a single energy absorption component 2 while ensuring the buffering effect, and at the same time ensure that a single energy absorption component 2 is small enough for adjustment. At the same time, different from the traditional arrangement of the side-by-side energy absorption components 2, the rectangular array arrangement of the energy absorption components 2 makes it so that even if a small number of energy absorption components 2 are missing or damaged, it will not overly affect the overall energy absorption effect, ensuring the stability and reliability of the device.

[0043] Please refer to Figure 4 , a single energy absorption component 2 includes a plurality of energy absorption units 24 arranged in parallel. Specifically, please refer to Figure 5 , a single energy absorption unit 24 is composed of eight mutually hinged movable plates spliced together, that is, the overall energy absorption unit 24 is an octagonal structure. And, to ensure that multiple energy absorption components 2 can complete the impact force transmission process well and avoid deformation of the movable plates due to stress concentration, the movable plates at the near ends of the multiple energy absorption units 24 in the same horizontal plane should be vertically arranged, that is, there should be two symmetrically arranged vertical movable plates in a single energy absorption unit 24 to complete the abutting process of different energy absorption components 2.

[0044] Two symmetrically arranged movable plates should also be selected from the eight movable plates and slots 25 should be opened on them. Further, the movable plates with slots 25 opened should also be vertically arranged to ensure that there is a large enough abutting surface between the multiple energy absorption units 24 in a single energy absorption component 2. Specifically, the energy absorption unit 24 is composed of eight hinged movable plates, among which, four movable plates are vertically arranged, and, the four vertically arranged movable plates are pairwise symmetric and the four vertically arranged movable plates are not adjacent to each other.

[0045] A linkage rod 23 is inserted into multiple slots 25 in a single energy absorption component 2, so as to ensure that multiple energy absorption units 24 in the single energy absorption component 2 can move synchronously, avoiding the skew of the linkage rod 23 caused by the force on a single energy absorption unit 24, thereby damaging the sliding connection between the corrugated plate 4 and the movable plate. At the same time, the existence of the linkage rod 23 can also support the energy absorption unit 24, ensuring that each energy absorption unit 24 can be in a specific position according to the expected value. At the same time, the sliding connection between the movable plate and the linkage rod 23 enables a single energy absorption unit 24 to be detached from the linkage rod 23 by sliding.

[0046] Please continue to refer to Figure 4 , a length conversion mechanism 21 is sleeved on both ends of the linkage rod 23 respectively. Specifically, please refer to Figure 6 , the length conversion mechanism 21 includes a conversion unit 211, and the conversion unit 211 has the same structure as the energy absorption unit 24. The conversion unit 211 is also composed of eight spliced movable plates hinged to each other. Among the eight movable plates in the conversion unit 211, four movable plates are vertically arranged, and moreover, the four vertically arranged movable plates are symmetric in pairs and the four vertically arranged movable plates are not adjacent to each other.

[0047] Please continue to refer to Figure 4 , a compression spring I 22 is arranged between the conversion unit 211 and the adjacent energy absorption unit 24. The compression spring I 22 is sleeved outside the linkage rod 23. That is, the specific working principle of the energy absorption component 2 in this application is: by changing the distance between the upper and lower movable plates of the conversion unit 211, the length of the length conversion mechanism 21 is changed. And from Figure 2 , it can be known that the far ends of the two conversion units 211 are embedded in the sliding groove 5, that is, the overall length of the energy absorption component 2 cannot be changed. Then, the change in the length of the length conversion mechanism 21 changes the compression amount of the compression spring I 22, so that the total length of the multiple energy absorption units 24 changes, thereby controlling the width of a single energy absorption component 2. That is, in this application, by changing the width of the energy absorption unit 24 and the length of the length conversion mechanism 21, a single energy absorption component 2 can be detached from between the two corrugated plates 4, so as to facilitate the replacement of a single energy absorption component 2.

[0048] Please refer to Figure 2 、 Figure 10 , to ensure the portability of disassembly, the number of energy absorption components 2 in the same vertical plane is not more than four, so that the user can disassemble any energy absorption component 2 at most twice.

[0049] To ensure the buffering effect of the energy absorption component 2, it is also necessary to limit the number of energy absorption components 2 in the same vertical plane to be not less than one.

[0050] At the same time, refer to Figure 4, the center line of the transformation unit 211 is perpendicular to the center line of the energy absorption unit 24, so that when the whole is impacted and multiple energy absorption units 24 are deformed, the transformation unit 211 will not affect the deformation of the energy absorption unit 24.

[0051] The longitudinal section of the mounting rod is square, so as to limit the specific shapes of the energy absorption unit 24 and the transformation unit 211, enabling direct installation and ensuring that there is no change during use.

[0052] Please refer to Figure 7 , mounting grooves 212 are formed on two movable plates located at the upper and lower ends inside the transformation unit 211. A steel wire rope 216 is inserted into the mounting groove 212. The mounting groove 212 neither hinders the relative movement of the steel wire rope 216 relative to the transformation unit 211 nor prevents the steel wire rope 216 from freely separating from and engaging with the movable plate.

[0053] One regulating plate 217 is fixedly connected to each of the far ends of the two steel wire ropes 216. The regulating plate 217 is fixedly connected to the corresponding movable plate. Therefore, the corresponding regulating plate 217 can be controlled by pulling the steel wire rope 216, and the relative distance between the two movable plates can be changed through the steel wire rope 216 to control the length of the length transformation mechanism 21 to meet the expectation. At the same time, in practice, due to the reaction force of the compression spring on the transformation unit 211, that is, the two movable plates at the upper and lower ends always tend to move in opposite directions. Therefore, the pressing force between the movable plate and the regulating plate 217 can be used to ensure that the regulating plate 217 cannot move relative to the movable plate at will in practice, ensuring the adjustment and limiting effects of the regulating plate 217 on the movable plate.

[0054] A tightening member 214 is connected between the two steel wire ropes 216, so as to use the tightening member 214 to tighten the steel wire ropes 216 simultaneously and change the relative distance between the corresponding movable plate and the tightening member 214. Moreover, the two movable plates move synchronously and move towards each other simultaneously, making the length transformation process of the length transformation mechanism 21 faster and enabling it to reach the expected value more quickly.

[0055] Please refer to Figure 7 , Figure 8 , Figure 9 , the tightening member 214 includes a rotating shaft 2143. The two steel wire ropes 216 are fixedly connected to the rotating shaft 2143, so that the length of the steel wire rope 216 between the regulating plate 217 and the tightening member 214 can be reduced by rotating the rotating shaft 2143, achieving the purpose of reducing the distance between the regulating plate 217 and the tightening member 214.

[0056] To facilitate the rotation of the rotating shaft 2143, a rotating member 2142 is provided at the front end of the rotating shaft 2143. Specifically, the rotating member 2142 can adopt various structures. In this application, the rotating member 2142 used is a common wrench hole. In practice, the user can use a labor-saving wrench to cooperate with the wrench hole to rotate the rotating shaft 2143.

[0057] To ensure that the steel wire rope 216 can always be in a proper position and does not affect other components of this application, two limiting rings 2141 are coaxially and fixedly connected to the rotating shaft 2143. The positions of the two steel wire ropes 216 can be limited by the limiting rings 2141.

[0058] To ensure the installation of the rotating shaft 2143, an installation frame 213 is detachably connected by clamping in the conversion unit 211, and the rotating shaft 2143 is rotatably connected to the installation frame 213. Specifically, the installation frame 213 can also be detachably connected to the conversion unit 211 in the form of screws and bolt holes.

[0059] To ensure that the distance between the two adjusting plates 217 does not increase due to the lack of rotational force during the use of the rotating shaft 2143, an anti-retreat member 215 is provided on the rotating shaft 2143 so that the rotating shaft 2143 can only rotate in one direction under normal conditions, that is, the rotating shaft 2143 can only rotate in the direction of increasing the number of winding turns of the steel wire rope 216 on it.

[0060] The anti-retreat member 215 includes a ratchet wheel 2151 coaxially and fixedly connected to the rotating shaft 2143, and the ratchet wheel 2151 moves synchronously with the rotating shaft 2143.

[0061] A pawl 2152 is provided on the upper side of the ratchet wheel 2151. The ratchet wheel 2151 can be limited by the pawl 2152 so that the ratchet wheel 2151 can only rotate in one direction.

[0062] The middle position of the pawl 2152 is rotatably connected to the installation frame 213. One end of the pawl 2152 is snapped into the teeth of the ratchet wheel 2151, and a compression spring II 2153 is provided on the lower side of the other end of the pawl 2152.

[0063] The other axial end of the compression spring II 2153 is fixedly connected to the installation frame 213. Thus, under normal conditions, the pawl 2152 can be snapped into the teeth of the ratchet wheel 2151 to limit it through the lever principle. When the user presses the end of the pawl 2152 away from the ratchet wheel 2151, the limiting effect of the pawl 2152 on the ratchet wheel 2151 can be released.

[0064] Please refer to Figure 12 、 Figure 13 , the collision mechanism 1 includes a mounting plate 11. One end of the mounting plate 11 away from the energy absorption component 2 is an arc surface, thereby improving the protection effect on the collided vehicle and avoiding further damage to the vehicle.

[0065] A pressure plate 13 is arranged inside the mounting plate 11, and the pressure plate 13 abuts against the adjacent energy absorption component 2 to complete the force transmission process.

[0066] To ensure that the pressure plate 13 can complete the impact force transmission well and further ensure that the impact force only causes the energy absorption component 2 to move linearly without a stroke conflict with the corrugated plate 4. The pressure plate 13 is of a wavy structure, and the number of wave crests of the pressure plate 13 is the same as the number of energy absorption units 24 in a single energy absorption component 2. The wave crests of the pressure plate 13 abut against the corresponding movable plates.

[0067] Furthermore, to ensure that the pressure plate 13 can be easily replaced after deformation, a positioning plate 14 is fixedly connected to the upper side of the horizontal end of the mounting plate 11. A positioning groove is provided on the positioning plate 14, and the pressure plate 13 is inserted into the positioning groove, so that the pressure plate 13 can be easily replaced.

[0068] An energy absorption cylinder 12 is also arranged between the pressure plate 13 and the mounting plate 11. The energy absorption cylinder 12 is filled with energy absorption material to further improve the energy absorption effect and at the same time make up for the gap between the pressure plate 13 and the mounting plate 11. Specifically, the energy absorption material can be sand.

[0069] Please refer to Figure 11 , it should be emphasized that in the energy absorption component 2 of the present invention, since the transformation unit 211 has the same structure as the energy absorption unit 24, the difference is that an installation groove 212 is provided on the transformation unit 211 for the steel wire rope 216, and a bolt hole is provided for the bolt. Then the transformation unit 211 can replace the energy absorption unit 24, which can further improve the replaceability of the present application in practice.

[0070] In the actual use process of the present invention, it specifically includes an installation process and a replacement process.

[0071] Installation process: First, assemble the collision mechanism 1, that is, insert the pressure plate 13 into the positioning plate 14, place the energy absorption cylinder 12 in a specific position and fill it with energy absorption material; then, fix the fixing mechanism 3 to the ground by ground screws, and assemble the corrugated plate 4 with the fixing mechanism 3 and the collision mechanism 1 by bolts or similar structures. At this time, the corrugated plate 4 and the collision mechanism 1 can slide linearly relative to the fixing mechanism 3.

[0072] Then, place the energy absorption component 2 between the two corrugated plates 4, rotate its rotating shaft 2143 so that the height of its length transformation mechanism 21 continuously decreases until its length transformation mechanism 21 is clamped between the two corrugated plates 4, and stop rotating the rotating shaft 2143 when the width of the energy absorption component 2 is appropriate; finally, repeat the step of placing the energy absorption component 2 until the number of energy absorption components 2 between the two corrugated plates 4 meets the expected value.

[0073] Replacement process: First, determine the energy-absorbing component 2 to be replaced as the target energy-absorbing component 2;

[0074] After that, first rotate the rotating shaft 2143 in the adjacent energy-absorbing component 2 to increase the height of the length transformation mechanism 21 in the adjacent energy-absorbing component 2 and reduce the width of the energy-absorbing unit 24 of the adjacent energy-absorbing component 2. At this time, the abutting relationship between the adjacent energy-absorbing component 2 and the target energy-absorbing component 2 is released;

[0075] Finally, rotate the rotating shaft 2143 in the target energy-absorbing component 2 to continuously increase the height of the length transformation mechanism 21 therein until the length transformation mechanism 21 releases the abutting effect with the corrugated plate 4. At this time, the target energy-absorbing component 2 can be taken out from between the two corrugated plates 4.

[0076] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A assembled road anti-collision pad, comprising a collision mechanism (1) and a fixing mechanism (3) arranged along the lane direction. The fixing mechanism (3) is fixed to the ground by ground screws. Characterized in that: On both sides of the collision mechanism (1), a corrugated plate (4) is detachably connected respectively. The two corrugated plates (4) are symmetrically arranged. A plurality of sliding grooves (5) are opened at the adjacent ends of the two corrugated plates (4). The plurality of sliding grooves (5) are arranged at equal intervals along the height direction of the corrugated plate (4). A plurality of energy absorption components (2) are arranged in a rectangular array between the two corrugated plates (4). Each energy absorption component (2) is inserted into the corresponding sliding groove (5). Each energy absorption component (2) comprises a plurality of energy absorption units (24). Each energy absorption unit (24) is composed of eight mutually hinged movable plates spliced together. Adjacent energy absorption units (24) are abutted by the movable plates. And, slots (25) are opened on the abutted movable plates of the adjacent energy absorption units (24). A linkage rod (23) is commonly inserted into the plurality of slots (25). At both ends of the linkage rod (23), a length conversion mechanism (21) is sleeved respectively. One end of the length conversion mechanism (21) is fixedly connected with a compression spring I (22). The other end of the length conversion mechanism (21) is embedded into the sliding groove (5) and abutted against the corrugated plate (4). The compression spring I (22) is sleeved outside the linkage rod (23). The other axial end of the compression spring I (22) is abutted against the adjacent energy absorption unit (24). Limit grooves (6) are opened on the corrugated plates (4). Limit plates (7) are respectively arranged corresponding to the limit grooves (6) at the far ends of the two corrugated plates (4). The limit plates (7) are detachably connected with the fixing mechanism (3). The length conversion mechanism (21) comprises a conversion unit (211). The conversion unit (211) has the same structure as the energy absorption unit (24). At the far ends of the two movable plates not adjacent to the movable plate provided with the slot (25) in the conversion unit (211), an adjusting plate (217) is respectively arranged. At the adjacent ends of the two adjusting plates (217), a steel wire rope (216) is fixedly connected respectively. Installation grooves (212) are opened on the movable plates for the steel wire ropes (216). A tightening member (214) is commonly connected between the two steel wire ropes (216). The tightening member (214) comprises a rotating shaft (2143). Two limit rings (2141) are coaxially and fixedly connected to the rotating shaft (2143). The steel wire rope (216) is fixedly connected to the rotating shaft (2143) located between the two limit rings (2141). An anti-retreat member (215) is arranged on the rotating shaft (2143). A rotating member (2142) is also arranged on the rotating shaft (2143). An installation frame (213) is detachably connected inside the conversion unit (211). The rotating shaft (2143) is rotatably connected with the installation frame (213).

2. A assembled road anti-collision pad according to claim 1, Characterized in that: The anti-retreat component (215) includes a ratchet wheel (2151) fixedly connected coaxially with the rotating shaft (2143), and a ratchet pawl (2152) is arranged on the upper side of the ratchet wheel (2151); The middle position of the ratchet pawl (2152) is rotatably connected to the mounting frame (213). One end of the ratchet pawl (2152) is snapped into the teeth of the ratchet wheel (2151). A compression spring II (2153) is arranged on the lower side of the other end of the ratchet pawl (2152), and the other axial end of the compression spring II (2153) is fixedly connected to the mounting frame (213).

3. A prefabricated road crash cushion according to claim 1, characterized in that: The center line of the transformation unit (211) is perpendicular to the center line of the energy absorption unit (24); the longitudinal section of the linkage rod (23) is square.

4. A prefabricated road crash cushion according to claim 1, characterized in that: The number of the plurality of energy absorption components (2) in the same vertical plane is not more than four and not less than one.

5. A prefabricated road crash cushion according to claim 1, characterized in that: The collision mechanism (1) includes a mounting plate (11), the longitudinal section of the mounting plate (11) is L-shaped, a positioning plate (14) is fixedly connected to the upper side of the horizontal end of the mounting plate (11), a positioning groove is formed in the positioning plate (14), and a pressure plate (13) is inserted into the positioning groove; The pressure plate (13) is of a wavy structure, the number of wave crests of the pressure plate (13) is the same as the number of energy absorption units (24) in a single energy absorption component (2), and the wave crests of the pressure plate (13) are in contact with the corresponding movable plates; An energy absorption cylinder (12) is arranged between the pressure plate (13) and the mounting plate (11), and the energy absorption cylinder (12) is filled with energy absorption materials.

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