Hidden type vehicle stopping and tire breaking device

Abstract

The utility model relates to an invisible car stopping tire puncturing device which comprises a nail containing box, a nail coiling shaft and a nail chain. The nail coiling shaft is rotationally installed in the nail containing box, the nail chain is wound on the nail coiling shaft, and tire breaking nails are arranged on the nail chain at intervals; the telescopic device comprises a telescopic device shell, a rotating shaft and a telescopic belt, the rotating shaft is rotatably mounted in the telescopic device shell, the telescopic belt is wound on the rotating shaft, one end of the telescopic belt is fixedly connected with the rotating shaft, and the other end of the telescopic belt extends out of the opening of the telescopic device shell and is connected with the free end of the nail chain. During non-security operation, the nail chain is in a retraction state, and the nail chain is wound on the nail winding shaft and retracts into the nail containing box; and a telescopic belt of the telescopic device is in an extending state. During security and protection operation, the nail chain is pulled out of the nail containing box through retraction of the telescopic belt of the telescopic device, the nail chain is transversely arranged on a road, passing vehicles are blocked, and once a vehicle breaks through the nail chain and tires roll over the nail chain, the tire breaking nails on the nail chain can pierce the tires and quickly deflate the tires, so that the driving capability of the vehicle is lost.

Description

Technical Field

[0001] This utility model relates to a tire deflation device, and more particularly to a concealed tire deflation device that prevents vehicles from being punctured. Background Technology

[0002] Tire deflation devices, also known as spike barriers, have sharp spikes that deflate a tire in a very short time, preventing the vehicle from moving. Therefore, tire deflation devices are an essential anti-terrorism barrier in some high-security locations. Existing tire deflation devices include fixed and movable types. Fixed tire deflation devices are normally closed when not in use, with the spikes hidden underground. During security operations, hydraulic devices raise the spikes to the surface to block vehicles. When a vehicle needs to pass, the spikes are retracted via the hydraulic system. However, fixed tire deflation devices are fixed in position and cannot be moved flexibly. Movable tire deflation devices typically have spikes on a chain. When not in use, the chain is rolled up; during security operations, it is unrolled. They are flexible, but the operation of unfolding and retracting them is cumbersome, time-consuming, and inconvenient. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a concealed tire-puncturing device, including a nail box, a nail coil, and a nail chain; the nail box has an opening, the nail coil is rotatably installed in the nail box, the nail chain is wound on the nail coil, and tire-puncturing nails are spaced apart on the nail chain, one end of the nail chain is fixedly connected to the nail coil, and the other end can extend out from the opening of the nail box;

[0004] It also includes an expansion joint; the expansion joint includes an expansion joint housing, a rotating shaft and an expansion belt. The expansion joint housing has an opening, the rotating shaft is rotatably installed inside the expansion joint housing, the expansion belt is wound around the rotating shaft, one end of the expansion belt is fixedly connected to the rotating shaft, and the other end extends out from the opening of the expansion joint housing and is connected to the free end of the nail chain.

[0005] Furthermore, the mounting box is provided with a first spring fixing shaft, on which a first spring is sleeved. The first spring is located at the center of the coil nail shaft, with one end of the first spring connected to the first spring fixing shaft and the other end connected to the coil nail shaft.

[0006] Furthermore, in one embodiment, the telescopic device has a second spring fixing shaft inside its telescopic housing, and a second spring is sleeved on the second spring fixing shaft. The second spring is located at the axis of the rotating shaft, with one end of the second spring connected to the second spring fixing shaft and the other end connected to the rotating shaft; a locking device is provided at the opening of the telescopic housing.

[0007] Furthermore, in another embodiment, the telescopic device further includes a rotary motor, which is fixed outside the telescopic device housing, and the output shaft of the rotary motor extends into the telescopic device housing and is coaxially and fixedly connected to the rotary shaft.

[0008] In some embodiments, the staple box and the telescopic housing are respectively provided with brackets on their exteriors.

[0009] In some embodiments, the upper layer of the nail chain is a non-woven fabric layer, and the lower layer is a kraft paper layer, with the non-woven fabric layer adhered to the kraft paper layer.

[0010] Furthermore, the nonwoven fabric layer is provided with tear-resistant lines at intervals.

[0011] In some embodiments, the tire-puncture nail comprises a metal nail and a foam layer surrounding the metal nail.

[0012] Furthermore, the metal nail of the tire-puncture nail includes a triangular main nail and triangular wing nails fixed on both sides of the central axis of the triangular main nail; the foam layer is a square pyramid shape and completely wraps around the metal nail.

[0013] Preferably, the base edge of the triangular main nail of the tire puncture nail is set horizontally along the nail chain, and the tire puncture nail is attached to the nail chain.

[0014] The working principle of this utility model:

[0015] This utility model provides a concealed tire-puncture device. During use, the nail box and the telescopic device are separated by a certain distance and placed horizontally on the road. In the natural state (non-security operation), the nail chain is retracted, wound on the nail coil and retracted into the nail box; the telescopic belt of the telescopic device is extended. In an emergency (security operation), the telescopic belt retracts, pulling the nail chain out of the nail box and placing it horizontally on the road to block passing vehicles. If a vehicle tries to run over the blockage, the tire spikes on the chain will puncture the tire, quickly deflating it and rendering the vehicle immobile.

[0016] The beneficial effects of this utility model are:

[0017] This utility model provides a concealed tire-puncture device that is flexible and can be used in any location and on any road. The tire spikes can be freely pulled out; when needed to stop a vehicle, the spike chain is pulled out, and when the vehicle is allowed to pass, the chain is retracted. Once a vehicle passes over the spike chain, the tire spike quickly punctures the tire, rapidly deflating it. Because vehicles do not stop immediately after passing over the spike chain, the spike chain of this utility model uses easily tearable non-woven fabric as padding for the tire spikes. After the tire spike punctures the tire, the chain easily breaks without taking the entire device away, thus not affecting the device's reusability. The telescopic device can be reconnected to the broken end of the spike chain for continued use. The tire spikes consist of metal spikes and a foam layer surrounding the metal spikes. The foam layer prevents the tire spikes from tangling or getting caught in the spike box. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the retracted state structure of the nail chain of this utility model;

[0019] Figure 2 This is a schematic diagram of the extended chain structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting box structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the mounting box of this utility model;

[0022] Figure 5 This is a schematic diagram of the expansion joint structure in Embodiment 3 of this utility model;

[0023] Figure 6 This is a cross-sectional view of the expansion joint in Embodiment 3 of this utility model;

[0024] Figure 7 This is a schematic diagram of the expansion joint structure in Embodiment 4 of this utility model;

[0025] Figure 8 This is a schematic diagram of the tire-puncture nail of this utility model;

[0026] Figure 9 This is a schematic diagram of the metal nail structure of the tire-breaking nail of this utility model;

[0027] Figure 10 This is a schematic diagram of the tire-puncture nail structure of this utility model;

[0028] Figure 11 This is a partial structural diagram of the nail chain in Embodiment 6 of this utility model;

[0029] 1. Nail box; 2. Nail coil; 3. Nail chain; 4. Tire puncture nail; 5. Telescopic device; 6. Telescopic device housing; 7. Rotating shaft; 8. Telescopic belt; 9. First spring fixing shaft; 10. First spring; 11. Second spring fixing shaft; 12. Second spring; 13. Locking device; 14. Limiting groove; 15. Rotary motor; 16. Non-woven fabric layer; 17. Kraft paper layer; 18. Metal nail; 19. Foam layer; 20. Triangular main nail; 21. Triangular wing nail; 22. Bracket; 23. Easy-tear line. Detailed Implementation

[0030] Example 1

[0031] See Figure 1 , 2 As shown, this embodiment provides a concealed tire-puncture device, including a nail box 1, a nail coil 2, and a nail chain 3; the nail box 1 has an opening, the nail coil 2 is rotatably installed in the nail box 1, the nail chain 3 is wound on the nail coil 2, and tire-puncture nails 4 are spaced apart on the nail chain 3; one end of the nail chain 3 is fixedly connected to the nail coil 2, and the other end can extend out from the opening of the nail box 1;

[0032] It also includes a telescopic device 5; the telescopic device 5 includes a telescopic device housing 6, a rotating shaft 7 and a telescopic belt 8. The telescopic device housing 6 has an opening, the rotating shaft 7 is rotatably installed inside the telescopic device housing 6, the telescopic belt 8 is wound around the rotating shaft 7, one end of the telescopic belt 8 is fixedly connected to the rotating shaft 7, and the other end extends out from the opening of the telescopic device housing 6 and is connected to the free end of the nail chain 3. The connection method can be a fixed connection, a swivel connection through a clamp, a swivel connection through a hook, etc.

[0033] The working principle of this utility model:

[0034] This utility model provides a concealed tire-puncture device. During use, the nail box 1 and the telescopic connector 5 are separated by a certain distance and placed horizontally on the road. In the natural state (non-security operation), the nail chain 3 is in a retracted state, wound on the nail coil 2 and retracted into the nail box 1; the telescopic belt 8 of the telescopic connector 5 is in an extended state. At this time, the tire-puncture nails 4 on the nail chain 3 are located inside the nail box 1 and do not obstruct vehicle passage. In an emergency state (security operation), the telescopic belt 8 of the telescopic connector 5 retracts, pulling the nail chain 3 out of the nail box 1 and placing it horizontally on the road to block passing vehicles. If a vehicle runs over the blockage, the tire-puncture nails 4 on the nail chain 3 will puncture the tire, quickly deflating the tire and rendering the vehicle immobile.

[0035] Example 2

[0036] See Figure 1-4As shown, this embodiment provides a concealed tire-breaking device. Based on embodiment 1, the mounting box 1 is provided with a first spring fixing shaft 9, and a first spring 10 is sleeved on the first spring fixing shaft 9. The first spring 10 is located at the axis of the coil nail shaft 2. One end of the first spring 10 is connected to the first spring fixing shaft 9, and the other end is connected to the coil nail shaft 2.

[0037] In its natural state (non-security operation), the first spring 10 uses a certain elastic force to keep the nail chain 3 in a retracted state, with the nail chain 3 wound around the nail coil 2 and retracted into the nail box. In an emergency (security operation), the nail chain 3 will be pulled out against the elastic force of the first spring 10. During the pulling process, the first spring 10 will store force. Once the nail chain 3 loses external tension, the nail coil 2 will rotate and retract the nail chain 3 into the nail box under the restoring elastic force of the first spring 10.

[0038] Example 3

[0039] See Figure 1 , 2 As shown in Figures 5 and 6, this embodiment provides a concealed tire deflation device. Based on Embodiment 1 or 2, the telescopic device 5 has a second spring fixing shaft 11 inside its telescopic housing 6. A second spring 12 is sleeved on the second spring fixing shaft 11 and is located at the axis of the rotating shaft 7. One end of the second spring 12 is connected to the second spring fixing shaft 11, and the other end is connected to the rotating shaft 7. A locking device 13 is provided at the opening of the telescopic housing 6. The locking device 13 serves to fix and lock the telescopic belt 8.

[0040] In its natural state, the second spring 12, through a certain elastic force, keeps the telescopic belt 8 in a retracted state, with the belt wound around the rotating shaft 7 and retracted into the telescopic housing 6. During use, in non-security operations, the telescopic belt 8 is manually pulled out to a certain length and locked by the locking device 13 to prevent retraction. Pulling out the belt 8 causes the second spring 12 to store force. In an emergency (security operation), the locking device 13 closes, and the belt 8 is not locked. Under the restoring force of the second spring 12, the rotating shaft 7 rotates back to its original position, causing the belt 8 to retract and pulling the nail chain 3 to overcome the elastic force of the first spring 10 and extend it out of the nail box 1. The restoring force of the second spring 12 is greater than the elastic force of the first spring 10.

[0041] The locking device 13 described in this embodiment can be a manual locking device or an electric locking device.

[0042] This embodiment uses a remote-controlled electric locking device with an electric telescopic lock stop pin. The electric telescopic lock stop pin of the locking device 13 is set downward toward the telescopic belt 8. The opening of the telescopic housing 6 is also provided with a limiting groove 14, which plays a limiting role for the telescopic belt 8. When the electric telescopic lock stop pin of the locking device 13 is extended downward by remote control, it and the limiting groove 14 together squeeze the telescopic belt 8 to fix and lock the telescopic belt 8.

[0043] The elastic band 8 is preferably made of steel, but can also be made of nylon, fiber or plastic.

[0044] Example 4

[0045] See Figure 1 , 2 As shown in Figure 7, the concealed tire deflation device provided in this embodiment, based on embodiment 1 or 2, further includes a rotary motor 15 in the telescopic device 5. The rotary motor 15 is fixed to the outside of the telescopic device housing 6, and the output shaft of the rotary motor 15 extends into the telescopic device housing 6 and is coaxially and fixedly connected to the rotary shaft 7.

[0046] In use, during non-security operations, the telescopic belt 8 is manually extended to a certain length. In an emergency (security operation), the rotary motor 15 receives a control signal and starts, driving the rotary shaft 7 to reset and rotate, causing the telescopic belt 8 to retract and pulling the nail chain 3 to overcome the elastic force of the first spring 10 and extend it out of the nail box 1. The pulling force of the rotary motor 15 is greater than the elastic force of the first spring 10. When resuming non-security operations, the rotary motor 15 rotates to release the telescopic belt 8, and the nail chain 3 retracts under the reset elastic force of the first spring 10, while simultaneously pulling the telescopic belt 8 out from the opening of the telescopic housing 6.

[0047] Example 5

[0048] See Figure 1 , 2 As shown, this embodiment provides a concealed tire deflation device. Based on any of the tire deflation devices in embodiments 1-4, the mounting box 1 and the telescopic housing 6 are respectively provided with brackets 22, which serve to stabilize and fix the mounting box 1 and the telescopic housing 6. Fixing can be achieved by adding counterweights to the brackets 22 or by driving in ground spikes.

[0049] Example 6

[0050] See Figure 11 As shown, this embodiment provides a hidden tire deflation device. Based on any of the tire deflation devices in embodiments 1-5, the upper layer of the nail chain 3 is a non-woven fabric layer 16, and the lower layer is a kraft paper layer 17. The non-woven fabric layer 16 is pasted on the kraft paper layer 17. The pasting method can be dot bonding, line bonding, or surface bonding. The non-woven fabric layer 16 is easy to break, and the kraft paper layer 17 increases the toughness of the nail chain 3.

[0051] The nonwoven fabric layer 16 is also provided with tear-resistant lines 23 at intervals; the purpose of this is that when the wheel runs over the nail chain 3 and the tire puncture nail 4 pierces the tire, the tire can easily tear the nail chain 3, and the vehicle can only take away part of the torn nail chain 3 as it continues to move forward, thus avoiding taking away the entire tire puncture device.

[0052] See Figure 8-10 As shown, in some or all embodiments, the tire puncture nail 4 comprises a metal nail 18 and a foam layer 19 surrounding the metal nail. The foam layer 19 is used to prevent the tire puncture nails 4 from getting caught on each other inside the nail box 1. The tire puncture nails 4 are attached to the nail chain 3.

[0053] Furthermore, the metal nail of the tire puncture nail 4 includes a triangular main nail 20 and triangular wing nails 21 fixed on both sides of the central axis of the triangular main nail 20; the triangular main nail 20 is an isosceles triangle, and the triangular wing nails 21 are right triangles, which are welded and fixed to the triangular main nail 20; the length of the base of the triangular main nail 20 is greater than the total length of the base of the two triangular wing nails 21; the foam layer 19 is a square pyramid shape, and the foam layer 19 can be polyurethane foam or other foam materials, which completely wraps around the outside of the metal nail.

[0054] When the wheel runs over the puncture stud 4, the foam layer 19 will be squeezed off by the wheel, and the internal metal stud 18 will pierce the tire. The angle formed by the triangular main stud 20 and the triangular wing studs 21 on both sides will accelerate the tire deflation and cause the vehicle to quickly lose its driving ability.

[0055] See Figure 11 As shown, in some embodiments, the base edge of the triangular main nail 20 of the tire puncture nail 4 is arranged laterally along the nail chain 3, and the triangular main nail 20 is perpendicular to the tire surface, making it easier to puncture the tire.

[0056] The above embodiments are only some embodiments of this utility model and do not represent all embodiments.

Claims

1. A concealed tire-puncture prevention device, characterized in that: It includes a staple box, a staple reel, and a staple chain; the staple box has an opening, the staple reel is rotatably installed inside the staple box, the staple chain is wound around the staple reel, tire-breaking staples are spaced apart on the staple chain, one end of the staple chain is fixedly connected to the staple reel, and the other end can extend out from the opening of the staple box; It also includes an expansion joint; the expansion joint includes an expansion joint housing, a rotating shaft and an expansion belt. The expansion joint housing has an opening, the rotating shaft is rotatably installed inside the expansion joint housing, the expansion belt is wound around the rotating shaft, one end of the expansion belt is fixedly connected to the rotating shaft, and the other end extends out from the opening of the expansion joint housing and is connected to the free end of the nail chain.

2. The concealed tire-puncture device according to claim 1, characterized in that: The mounting box is provided with a first spring fixing shaft, and a first spring is sleeved on the first spring fixing shaft. The first spring is located at the axis of the nail coiling shaft, one end of the first spring is connected to the first spring fixing shaft, and the other end is connected to the nail coiling shaft.

3. The concealed tire-puncture device according to claim 1, characterized in that: The telescopic device has a second spring fixing shaft inside its telescopic housing. A second spring is sleeved on the second spring fixing shaft. The second spring is located at the axis of the rotating shaft. One end of the second spring is connected to the second spring fixing shaft, and the other end is connected to the rotating shaft. A locking device is provided at the opening of the telescopic housing.

4. The concealed tire-puncture device according to claim 1, characterized in that: The expansion joint also includes a rotary motor, which is fixed outside the expansion joint housing. The output shaft of the rotary motor extends into the expansion joint housing and is coaxially and fixedly connected to the rotary shaft.

5. The concealed tire-puncture device according to claim 1, characterized in that: The mounting box and the telescopic housing are respectively provided with brackets on their exteriors.

6. The concealed tire-puncture device according to claim 1, characterized in that: The upper layer of the nail chain is a non-woven fabric layer, and the lower layer is a kraft paper layer, with the non-woven fabric layer pasted on the kraft paper layer.

7. A concealed tire-puncture prevention device according to claim 6, characterized in that: The nonwoven fabric layer is provided with tear-resistant lines at intervals.

8. The concealed tire-puncture device according to claim 1, characterized in that: The tire-puncture nail comprises a metal nail and a foam layer wrapped around the metal nail.

9. A concealed tire-puncture prevention device according to claim 8, characterized in that: The metal nail of the tire puncture nail includes a triangular main nail and triangular wing nails fixed on both sides of the central axis of the triangular main nail; the foam layer is a square pyramid shape and completely wraps around the metal nail.

10. A concealed tire-puncture prevention device according to claim 9, characterized in that: The base of the triangular main nail of the tire puncture nail is set horizontally along the nail chain, and the tire puncture nail is attached to the nail chain.

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