A road construction vehicle stopper

Abstract

The application relates to a road construction vehicle stopper, belonging to the field of road engineering safety devices, which comprises a launching device and a resistance net, the launching device comprises a rack, a response mechanism and a power mechanism, the rack is fixedly arranged on one side of a road, the response mechanism is used for judging whether a vehicle enters a construction area or not, the power mechanism is used for sending the resistance net into the construction area when the vehicle enters the construction area, and the resistance net is used for being wound on a front axle of the vehicle. After the application detects that a vehicle intrudes into the construction area, the power mechanism sends the resistance net into the construction area, so that the resistance net is arranged on the ground of the construction area; when the vehicle rolls over the resistance net, the resistance net can be wound on the front axle of the vehicle to increase the rotating resistance of the front wheel, the vehicle is quickly braked, and thus the safety of workers in the construction area is protected.

Description

Technical Field

[0001] This application relates to the field of road engineering safety devices, and in particular to a vehicle stopper for road construction. Background Technology

[0002] When road construction and maintenance are carried out while ensuring traffic flow, safety protection facilities such as warning signs, warning racks, and traffic cones are usually set up behind the construction work area. The placement of these safety protection devices must still maintain a certain safe distance from the actual construction point.

[0003] Due to various subjective or objective reasons, incidents of motor vehicles breaking through protective facilities and entering the construction area frequently occur. Furthermore, if the motor vehicle is traveling at excessive speed or the ground is slippery, it is impossible to guarantee that the motor vehicle can successfully brake within a safe distance, thereby causing casualties among construction workers. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a vehicle stop for road construction.

[0005] The technical solution for a road construction vehicle stop provided in this application is as follows:

[0006] A vehicle deterrent for road construction includes a launching device and a resistance net. The launching device includes a frame, a response mechanism, and a power mechanism. The frame is fixedly installed on one side of the road. The response mechanism is used to determine whether a vehicle has entered the construction area. The power mechanism is used to send the resistance net into the construction area when a vehicle enters the construction area. The resistance net is used to wrap around the front axle of the vehicle.

[0007] By adopting the above technical solution, when a vehicle is detected to have entered the construction area, the power mechanism sends the resistance net into the construction area and places the resistance net on the ground of the construction area. When the vehicle runs over the resistance net, the resistance net can wrap around the front axle of the vehicle to increase the rotational resistance of the front wheels, which helps the vehicle to brake quickly and thus protects the safety of the workers in the construction area.

[0008] Preferably, the power mechanism includes a launch tube, a propulsion piston, and a drive assembly. The launch tube is fixedly connected to the frame, the propulsion piston slides inside the launch tube, and the drive assembly provides the propulsion piston with the power to move. One end of the resistance net is fixed relative to the road, and the other end is connected to a traction elastic bullet. The traction elastic bullet is placed inside the launch tube, and the propulsion piston and the traction elastic bullet abut against each other on the side away from the launch tube opening.

[0009] Preferably, the drive assembly includes an energy storage spring, a connecting block, a power storage rack, a one-way toothed gear, and a ratchet pawl. The connecting block slides inside the launch tube and is located on the side of the propulsion piston away from the traction elastic spring. One end of the energy storage spring is connected to the propulsion piston, and the other end is connected to the connecting block. One end of the power storage rack is fixedly connected to the side of the connecting block away from the energy storage spring. The one-way toothed gear and the ratchet pawl are both connected to the frame and respectively mesh with the power storage rack. The power mechanism also includes a safety assembly, which is used to temporarily fix the propulsion piston at a predetermined position inside the launch tube. In its natural state, the ratchet pawl is used to prevent the power storage rack from moving away from the propulsion piston.

[0010] By adopting the above technical solution, the propulsion piston is first moved to a position that can be fixed by the safety component. Then, the one-way plate toothed wheel and the anti-reverse pawl control the energy storage rack and connecting block to move closer to the propulsion piston, compressing the energy storage spring to store elastic potential energy. When the response mechanism detects that a vehicle has entered the construction area, the safety is released, the energy storage spring pops open instantly, and the propulsion piston moves quickly to launch the traction elastic spring.

[0011] Preferably, the safety assembly includes a safety pin, a safety spring, and a release lever. An initial position lever is slidably mounted on the propulsion piston, with its sliding direction perpendicular to that of the propulsion piston. The safety pin is slidably connected to the launch tube, with its sliding direction parallel to that of the initial position lever relative to the propulsion piston. The release lever slides relative to the frame. A safety hole is provided on the wall of the launch tube. The sliding direction of the release lever is consistent with the sliding direction of the safety pin, and both are coaxial with the safety hole. One end of the safety spring is connected to the launch tube, and the other end is connected to the safety pin. When the initial position lever is coaxial with the safety pin, the safety pin abuts against the initial position lever. The end of the initial position lever away from the safety pin is inserted into the safety hole and abuts against the release lever. The response mechanism controls the sliding of the release lever.

[0012] By adopting the above technical solution, when the thrust piston is in the predetermined position, under the action of the safety spring, the end of the safety pin abuts against and pushes the initial position rod, so that the end of the initial position rod away from the safety pin is inserted into the safety hole and abuts against the release rod. Since the end of the initial position rod near the release rod is located in the safety hole at this time, the thrust piston cannot slide relative to the launch tube.

[0013] Preferably, the response mechanism includes a detection element and a transmission assembly. The detection element is located within the construction area and is fixed relative to the road. The transmission assembly is mounted on a frame, and its output end is connected to a release rod. When a vehicle passes the detection position of the detection element, the detection element causes the input end of the transmission assembly to apply a thrust, pushing the release rod closer to the initial position rod.

[0014] Preferably, it also includes a receiving box, which is located on the side of the construction area opposite to the frame. The receiving box has a receiving port on the side facing the frame, and a one-way valve plate is hinged to the receiving port. The one-way valve plate can only be flipped inside the receiving box.

[0015] By adopting the above technical solution, when the one-way valve plate is impacted by the traction elastic spring, it flips over and the traction elastic spring enters the receiving box. The one-way valve plate is reset, and the traction elastic spring is less likely to bounce out of the receiving box, thus reducing the safety hazards caused by the traction elastic spring rolling outside.

[0016] Preferably, a traction rope is fixedly connected between the traction elastic spring and the resistance net, a core tube is fixedly connected inside the traction elastic spring, a take-up drum is coaxially rotatably connected inside the core tube, the end of the traction rope away from the resistance net is fixedly connected to the take-up drum, a coil spring is connected between the take-up drum and the core tube, and an anti-rotation device is provided on the propulsion piston. The anti-rotation device is used to keep the take-up drum and the core tube relatively stationary when the traction elastic spring and the propulsion piston are in contact.

[0017] Preferably, the anti-rotation component is a anti-rotation pin, the length of the anti-rotation pin is consistent with the sliding direction of the propulsion piston, the core cylinder has an anti-rotation hole, the winding drum has a mating groove, the axes of the anti-rotation hole and the mating groove are both radial to the core cylinder, the traction elastic spring has a mounting hole coaxial with the anti-rotation hole, the anti-rotation pin passes through the mounting hole, the anti-rotation hole and the mating groove in sequence, and the groove wall of the mating groove abuts against the side wall of the anti-rotation pin.

[0018] By adopting the above technical solution, during the loading process and in the unlaunched state, the core tube and the winding drum need to be relatively stationary when the anti-rotation pin is used, so that the traction rope is pulled out of the traction elastic bullet and kept outside the core tube, and the drag net is not dragged into the launch tube.

[0019] Preferably, an auxiliary block is slidably disposed on the propulsion piston, the sliding direction being consistent with the sliding direction of the propulsion piston, an auxiliary spring is connected between the auxiliary block and the propulsion piston, and the anti-rotation pin is fixedly connected to the auxiliary block. In the natural state, the auxiliary spring applies a thrust toward the traction elastic spring to the auxiliary block; a force-bearing block is fixedly connected to the inner wall at the opening of the launch tube, and when the propulsion piston moves to the opening of the launch tube, the force-bearing block and the auxiliary block abut against the side away from the auxiliary spring.

[0020] By adopting the above technical solution, when the propulsion piston is pushed to the nozzle of the launch tube by the energy storage spring, the force block and the auxiliary block abut against each other on the side away from the auxiliary spring. The auxiliary block and the anti-rotation pin stop, but under the action of inertia, the propulsion piston and the traction elastic bullet continue to move forward. The propulsion piston and the anti-rotation pin slide relative to each other, and the anti-rotation pin can easily disengage from the mating groove and finally disengage from the mounting hole. Subsequently, the propulsion piston decelerates, and the traction elastic bullet separates from the propulsion piston. During the suspension process of the traction elastic bullet, the coil spring drives the winding drum to rotate to wind up the traction rope; the end of the resistance net near the traction elastic bullet gradually approaches the traction elastic bullet, so that after the traction elastic bullet enters the receiving box, the resistance net can more fully cover the construction area in the lateral direction.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By setting up the launching device and the resistance net, when a vehicle is detected to have entered the construction area, the power mechanism sends the resistance net into the construction area and places it on the ground. When the vehicle runs over the resistance net, the resistance net can wrap around the front axle of the vehicle to increase the rotational resistance of the front wheels, which helps the vehicle to brake quickly and thus protects the safety of the workers in the construction area.

[0023] 2. By setting the drive assembly, the push piston is first moved to a position that can be fixed by the safety assembly. Then, the one-way toothed wheel and the anti-reverse pawl control the energy storage rack and connecting block to move closer to the push piston, compressing the energy storage spring to store elastic potential energy. When the response mechanism detects that a vehicle has entered the construction area, the safety is released, the energy storage spring pops open instantly, and the push piston moves quickly to launch the traction elastic spring. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the structure of a vehicle stopper used in road construction, as shown in Embodiment 1 of this application.

[0025] Figure 2 This is a schematic diagram illustrating the arrangement of vehicle barriers used in road construction, as shown in Embodiment 1 of this application.

[0026] Figure 3 This is a structural schematic diagram illustrating the arrangement of vehicle barriers for road construction in Embodiment 2 of this application.

[0027] Figure 4 This is a cross-sectional schematic diagram of the cooperative structure of the traction elastic spring and the propulsion piston in Embodiment 2 of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Resistance net; 11. Traction rope; 12. Traction elastic spring; 121. Mounting hole; 13. Rewind drum; 131. Mating groove; 14. Core tube; 141. Coil spring; 142. Anti-rotation hole; 2. Launching device; 21. Frame; 22. Receiver box; 221. Receiver port; 222. One-way valve plate; 3. Response mechanism; 31. Detection component; 311. Long plate; 312. Transmission lever; 321. Linkage transmission mechanism; 4. Power mechanism ; 41. Launch tube; 411. Safety hole; 412. Propulsion piston; 413. Initial position rod; 414. Anti-rotation pin; 415. Auxiliary block; 416. Auxiliary spring; 417. Force-bearing block; 42. Drive assembly; 421. Energy storage spring; 422. Connecting block; 423. Energy storage rack; 426. Pull ring; 424. One-way toothed gear; 425. Anti-reverse pawl; 43. Safety assembly; 431. Safety pin; 432. Safety tension spring; 433. Release lever. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] Example 1:

[0031] This application discloses a vehicle stopper for road construction, such as... Figure 1 and 2 As shown, the system includes a launching device 2 and a resistance net 1. The launching device 2 includes a frame 21, a response mechanism 3, and a power mechanism 4. The frame 21 is fixedly installed on one side of the road. The response mechanism 3 is used to determine whether a vehicle has entered the construction area. The power mechanism 4 is used to send the resistance net 1 into the construction area when a vehicle enters the construction area, so that the resistance net 1 is laid on the road surface in front of the vehicle. When the vehicle runs over it, the resistance net 1 is used to wrap around the front axle or wheels of the vehicle, increasing the rotational resistance of the wheels and increasing the friction between the wheels and the ground, thereby achieving the purpose of rapid braking.

[0032] like Figure 1As shown, the resistance net 1 is made of a high-strength nylon and carbon fiber blended woven material. One end of it is fixed relative to the road guardrail, and the other end is connected to a traction elastic spring 12. A traction rope 11 of the same material as the resistance net 1 is fixedly connected between the traction elastic spring 12 and the resistance net 1. The traction elastic spring 12 is made of highly elastic rubber, which can restore its initial shape even after being crushed. The power mechanism 4 includes a launch tube 41, a propulsion piston 412, a safety assembly 43, and a drive assembly 42. The launch tube 41 is fixedly connected to the frame 21. The connection point between the resistance net 1 and the guardrail is located below the launch tube 41. The propulsion piston 412 slides along its length inside the launch tube 41. The drive assembly 42 provides the propulsion piston 412 with the power to move. The traction elastic spring 12 is placed inside the launch tube 41. The propulsion piston 412 and the traction elastic spring 12 abut against each other on the side away from the opening of the launch tube 41. That is, the traction elastic spring 12 is launched when the propulsion piston 412 moves toward the opening of the launch tube 41.

[0033] like Figure 1 As shown, the safety assembly 43 is used to temporarily fix the propulsion piston 412 at a predetermined position inside the launch tube 41. The safety assembly 43 includes a safety pin 431, a safety spring 432, and a release rod 433. An initial position rod 413 is slidably disposed on the propulsion piston 412. The sliding direction of the initial position rod 413 is perpendicular to the sliding direction of the propulsion piston 412. The safety pin 431 is slidably connected to the launch tube 41, and its sliding direction is parallel to the sliding direction of the initial position rod 413 relative to the sliding direction of the propulsion piston 412. The release rod 433 slides relative to the frame 21. A safety hole 411 is provided on the tube wall of the launch tube 41. The sliding direction of the release rod is consistent with the sliding direction of the safety pin 431, and both are coaxial with the safety hole 411. One end of the safety spring 432 is connected to the launch tube 41, and the other end is connected to the safety pin 431. When the push piston 412 is in the position where the initial position rod 413 is coaxial with the safety pin 431, under the action of the safety spring 432, the end of the safety pin 431 abuts against and pushes the initial position rod 413, so that the end of the initial position rod 413 away from the safety pin 431 is inserted into the safety hole 411 and abuts against the release rod 433. Since the end of the initial position rod 413 near the release rod 433 is located in the safety hole 411 at this time, the push piston 412 cannot slide relative to the launch tube 41.

[0034] like Figure 1As shown, the drive assembly 42 includes an energy storage spring 421, a connecting block 422, a power storage rack 423, a one-way toothed gear 424, and a backstop pawl 425. The connecting block 422 slides within the launch tube 41 and is located on the side of the propulsion piston 412 away from the traction elastic spring 12. One end of the energy storage spring 421 is fixedly connected to the propulsion piston 412, and the other end is fixedly connected to the connecting block 422. One end of the power storage rack 423 is fixedly connected to the side of the connecting block 422 away from the energy storage spring 421, and... The length direction of the energy storage rack 423 is consistent with the length direction of the launch tube 41. The one-way gear 424 and the anti-reverse pawl 425 are both connected to the frame 21 and mesh with the energy storage rack 423. In its natural state, the anti-reverse pawl 425 prevents the energy storage rack 423 from moving away from the push piston 412. The operator can only operate the one-way gear 424 to rotate unidirectionally using a torque tool. The rotation direction is the direction in which the gear pair moves the energy storage rack 423 toward the connecting block 422. When the push piston 412 is "fixed" at the safety hole 411 by the initial position rod 413, the operator moves the connecting block 422 closer to the push piston 412 by using the one-way gear 424 and the energy storage rack 423, thereby compressing the energy storage spring 421.

[0035] like Figure 1 As shown, the response mechanism 3 is used to control the sliding of the release lever 433. The response mechanism 3 includes a detection element and a transmission assembly. The detection element is located within the construction area and is fixed relative to the road. In this embodiment, the detection element includes a long plate 311 with a spring placed on the road and a transmission lever 312 located at the edge of the road. One end of the transmission lever 312 is located below the long plate 311, and the other end is located below the frame 21. The transmission assembly is located inside the frame 21 and is in the form of a linkage transmission mechanism 321. The linkage transmission mechanism 321 is composed of multiple links and levers, which can realize the directional transmission of thrust. The release lever 433 is located at the output end of the linkage transmission mechanism 321, and the end of the transmission lever 312 away from the long plate 311 is located below the input end of the linkage transmission mechanism 321. When the long plate 311 is run over by the wheel, it swings downward. The transmission lever 312 presses down at one end near the long plate 311 and lifts up at the other end, inputting a thrust to the linkage mechanism 321. Under the action of the linkage mechanism 321, the output end of the linkage mechanism 321 pushes the release lever 433 to move closer to the initial position lever 413, pushing the initial position lever 413 out of the safety hole 411. The end of the safety pin 431 is also pushed away from the inner cavity of the launch tube 41, so that the thrust piston 412 can slide inside the launch tube 41. At this time, the elastic potential energy of the energy storage spring 421 is released instantaneously, pushing the thrust piston 412 quickly toward the opening of the launch tube 41 to push out the traction elastic bullet 12 and achieve the launch purpose.

[0036] like Figure 1As shown in Figure 2, when reloading, the anti-reverse pawl 425 must be manually disengaged first, and the energy storage rack 423 pulled backward. The connecting block 422 drags the push piston 412 back to its original position via the energy storage spring 421 until the safety assembly 43 can "fix" the push piston 412 again before releasing the anti-reverse pawl 425. To facilitate pulling the energy storage rack 423, a pull ring 426 is attached to the end of the energy storage rack 423. In this embodiment, the orientation of the launch tube 41 forms a 30° angle with the direction of travel.

[0037] Example 2:

[0038] like Figure 3 As shown, based on Embodiment 1, this embodiment of the vehicle stopper also includes a receiving box 22. The receiving box 22 is located on the side of the construction area opposite to the frame 21, and can be reinforced by a water-filled anti-collision bucket. The receiving box 22 has a receiving port 221 on the side facing the frame 21. A one-way valve plate 222 is hinged to the receiving box 22 at the receiving port 221. The one-way valve plate 222 can only be rotated inside the receiving box 22. In its natural state, the one-way valve plate 222 closes the receiving port 221. When the one-way valve plate 222 receives the impact of the traction elastic spring 12, it rotates accordingly, and the traction elastic spring 12 enters the receiving box 22. The one-way valve plate 222 then resets, and the traction elastic spring 12 is less likely to bounce out of the receiving box 22, reducing the safety hazard caused by the traction elastic spring 12 rolling outside.

[0039] like Figure 4 As shown, a core tube 14 is fixedly connected inside the traction elastic projectile 12. A winding drum 13 is coaxially rotatably connected inside the core tube 14. The end of the traction rope 11 away from the drag net 1 is fixedly connected to the winding drum 13. A coil spring 141 connects the winding drum 13 and the core tube 14. In its natural state, the winding drum 13 rotates under the torque from the coil spring 141, winding the traction rope 11 until the edge of the drag net 1 contacts the traction elastic projectile 12. An anti-rotation element is provided on the thrust piston 412. The anti-rotation element is used to keep the winding drum 13 and the core tube 14 relatively stationary when the traction elastic projectile 12 and the thrust piston 412 are in contact. That is, during the loading process and in the unfired state, the traction rope 11 needs to be pulled out of the traction elastic projectile 12 and kept outside the core tube 14 so that the drag net 1 is not dragged into the launch tube 41.

[0040] like Figure 4As shown, the anti-rotation component is the anti-rotation pin 414, and an auxiliary block 415 is slidably disposed on the push piston 412. The sliding direction is the same as the sliding direction of the push piston 412. An auxiliary spring 416 is connected between the auxiliary block 415 and the push piston 412. The anti-rotation pin 414 and the auxiliary block 415 are fixedly connected. In the natural state, the auxiliary spring 416 applies a thrust toward the traction elastic spring 12 to the auxiliary block 415. The length of the anti-rotation pin 414 is consistent with the sliding direction of the push piston 412. The core cylinder 14 is provided with an anti-rotation hole 142, the winding drum 13 is provided with a mating groove 131 on its wall, and the traction elastic spring 12 is provided with a mounting hole 121 coaxial with the anti-rotation hole 142. The traction rope 11 is pulled from the winding drum 13, the mating groove 131 and the anti-rotation hole 142 are coaxial, and then the anti-rotation pin 414 is passed through the mounting hole 121, the anti-rotation hole 142 and the mating groove 131 in sequence. The groove wall of the mating groove 131 abuts against the side wall of the anti-rotation pin 414. At this time, the winding drum 13 cannot rotate relative to the core cylinder 14, and at the same time, the traction elastic spring 12 also abuts against the push piston 412. A force-bearing block 417 is fixedly connected to the inner wall of the launch tube 41 at the opening. When the push piston 412 is pushed to the opening of the launch tube 41 by the energy storage spring 421, the force-bearing block 417 and the auxiliary block 415 abut against the side away from the auxiliary spring 416. The auxiliary block 415 and the anti-rotation pin 414 stop. Under the action of inertia, the push piston 412 and the traction elastic spring 12 continue to move forward. The push piston 412 and the anti-rotation pin 414 slide relative to each other. The anti-rotation pin 414 can then easily disengage from the mating groove 131 and finally disengage from the mounting hole 121. Subsequently, the push piston 412 decelerates, and the traction elastic spring 12 and the push piston 412 separate. During the suspension of the traction elastic spring 12, the coil spring 141 drives the winding drum 13 to rotate and wind up the traction rope 11; the end of the resistance net 1 closest to the traction elastic spring 12 gradually approaches the traction elastic spring 12, so that after the traction elastic spring 12 enters the receiving box 22, the resistance net 1 can cover the construction area more fully in the horizontal direction.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vehicle stopper for road construction, characterized in that: The system includes a launching device (2) and a resistance net (1). The launching device (2) includes a frame (21), a response mechanism (3), and a power mechanism (4). The frame (21) is fixedly installed on one side of the road. The response mechanism (3) is used to determine whether a vehicle enters the construction area. The power mechanism (4) is used to send the resistance net (1) into the construction area when a vehicle enters the construction area. The resistance net (1) is used to wrap around the front axle of the vehicle. The power mechanism (4) includes a launch tube (41), a thrust piston (412), and a drive assembly (42). The launch tube (41) and the frame (21) are fixedly connected. The thrust piston (412) slides inside the launch tube (41). The drive assembly (42) provides the thrust piston (412) with the power to move. One end of the resistance net (1) is fixed relative to the road, and the other end is connected to a traction elastic spring (12). The traction elastic spring (12) is placed inside the launch tube (41). The thrust piston (412) and the traction elastic spring (12) abut against each other on the side away from the opening of the launch tube (41). The drive assembly (42) includes an energy storage spring (421), a connecting block (422), a power storage rack (423), a one-way toothed gear (424), and a ratchet pawl (425). The connecting block (422) slides inside the launch tube (41) and is located on the side of the propulsion piston (412) away from the traction elastic spring (12). One end of the energy storage spring (421) is connected to the propulsion piston (412), and the other end is connected to the connecting block (422). One end of the power storage rack (423) is fixedly connected to the connecting block (425). 2) On the side away from the energy storage spring (421), the one-way toothed gear (424) and the anti-reverse pawl (425) are both connected to the frame (21) and respectively mesh with the energy storage rack (423). The power mechanism (4) also includes a safety component (43). The safety component (43) is used to temporarily fix the propulsion piston (412) at a predetermined position in the launch tube (41). In the natural state, the anti-reverse pawl (425) is used to prevent the energy storage rack (423) from moving away from the propulsion piston (412).

2. The vehicle stopper for road construction according to claim 1, characterized in that: The safety assembly (43) includes a safety pin (431), a safety spring (432), and a release lever (433). A pre-position lever (413) is slidably mounted on the thrust piston (412). The sliding direction of the pre-position lever (413) is perpendicular to the sliding direction of the thrust piston (412). The safety pin (431) is slidably connected to the launch tube (41), and its sliding direction is parallel to the sliding direction of the pre-position lever (413) relative to the thrust piston (412). The release lever (433) slides relative to the frame (21). A safety hole (411) is provided on the wall of the launch tube (41). The sliding direction of the rod (433) is the same as the sliding direction of the safety pin (431), and both are coaxial with the safety hole (411). One end of the safety spring (432) is connected to the launching tube (41), and the other end is connected to the safety pin (431). When the initial position rod (413) is in a position coaxial with the safety pin (431), the safety pin (431) abuts against the initial position rod (413). The end of the initial position rod (413) away from the safety pin (431) is inserted into the safety hole (411) and abuts against the release rod (433). The response mechanism (3) is used to control the sliding of the release rod (433).

3. A vehicle stopper for road construction according to claim 2, characterized in that: The response mechanism (3) includes a detection element and a transmission assembly. The detection element is located in the construction area and is relatively fixed to the road. The transmission assembly is mounted on the frame (21). The output end of the transmission assembly is connected to the release rod (433). When a vehicle passes the detection position of the detection element, the detection element causes the input end of the transmission assembly to apply a thrust, pushing the release rod (433) closer to the initial position rod (413).

4. A vehicle stopper for road construction according to any one of claims 2-3, characterized in that: It also includes a receiving box (22), which is located on the side opposite to the construction area and the frame (21). The receiving box (22) has a receiving port (221) on the side facing the frame (21). A one-way valve plate (222) is hinged to the receiving box (221). The one-way valve plate (222) can only be flipped inside the receiving box (22).

5. A vehicle stopper for road construction according to claim 4, characterized in that: A traction rope (11) is fixedly connected between the traction elastic spring (12) and the resistance net (1). A core tube (14) is fixedly connected inside the traction elastic spring (12). A take-up drum (13) is coaxially rotatably connected inside the core tube (14). One end of the traction rope (11) away from the resistance net (1) is fixedly connected to the take-up drum (13). A coil spring (141) is connected between the take-up drum (13) and the core tube (14). An anti-rotation member is provided on the propulsion piston (412). The anti-rotation member is used to keep the take-up drum (13) and the core tube (14) relatively stationary when the traction elastic spring (12) and the propulsion piston (412) are in contact.

6. A vehicle stopper for road construction according to claim 5, characterized in that: The anti-rotation component is a anti-rotation pin (414), the length of which is consistent with the sliding direction of the thrust piston (412). The core cylinder (14) has an anti-rotation hole (142), and the winding drum (13) has a mating groove (131). The axes of the anti-rotation hole (142) and the mating groove (131) are both radial to the core cylinder (14). The traction elastic spring (12) has a mounting hole (121) coaxial with the anti-rotation hole (142). The anti-rotation pin (414) passes through the mounting hole (121), the anti-rotation hole (142), and the mating groove (131) in sequence. The groove wall of the mating groove (131) abuts against the side wall of the anti-rotation pin (414).

7. A vehicle stopper for road construction according to claim 6, characterized in that: An auxiliary block (415) is slidably disposed on the thrust piston (412), and the sliding direction is the same as the sliding direction of the thrust piston (412). An auxiliary spring (416) is connected between the auxiliary block (415) and the thrust piston (412). The anti-rotation pin (414) is fixedly connected to the auxiliary block (415). In the natural state, the auxiliary spring (416) applies a thrust toward the traction elastic spring (12) to the auxiliary block (415). A force-bearing block (417) is fixedly connected to the inner wall of the nozzle of the launching tube (41). When the thrust piston (412) moves to the nozzle of the launching tube (41), the force-bearing block (417) and the auxiliary block (415) abut against the side away from the auxiliary spring (416).

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