Rear-end collision prevention device for special vehicle

Abstract

The utility model relates to the technical field of special vehicle rear-end collision prevention, and discloses a special vehicle rear-end collision prevention device which comprises a vehicle body, a reverse-arch multi-piece steel plate spring is installed on the right side of the bottom end of the vehicle body, a bearing table is installed at one end of the reverse-arch multi-piece steel plate spring in a hinged mode through a bearing, and connecting shafts are installed at the front end and the rear end of a hinge seat. And one end of each connecting shaft is fixed with the outer side wall of the reverse arch multi-piece steel plate spring. When the vehicle is in rear-end collision, small vehicles can be buffered, the hydraulic or pneumatic cylinder drives the pre-tension cable net to prevent the vehicle from entering a dangerous area of a large vehicle, and the device can be placed on the side face and the tail portion, is fixed through the bearing table to prevent the vehicle from continuously invading tires and is connected into a cab through the rear sensor to timely and safely stop the vehicle to handle accidents. Serious car accidents caused by rear-end collision or side impact and secondary damage caused by continuous dragging can be effectively reduced, car crash and people death are greatly avoided, and the follow-up maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-rear-end collision for special vehicles, and particularly relates to an anti-rear-end collision device for special vehicles. Background Technique

[0002] Large vehicles refer to vehicles with a relatively larger body shape than ordinary cars, having more seats and cargo space. During the driving process of such vehicles, if a small car rear-ends a large vehicle in a safety accident, the small car is likely to enter under the large vehicle and get stuck with the medium and large vehicle. If the large vehicle does not stop in time, it will drag the small car. Therefore, large vehicles are equipped with frames at the rear end and both sides of the vehicle for protection.

[0003] Traditional anti-rear-end collision devices for large vehicles use very simple welded frames, which are easily damaged and can even lead to vehicle destruction and death in severe cases. In view of this situation, we propose an anti-rear-end collision device for special vehicles to improve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-rear-end collision device for special vehicles to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an anti-rear-end collision device for special vehicles, including a vehicle body. On the right side of the bottom end of the vehicle body, an anti-arch multi-leaf spring is installed. One end of the anti-arch multi-leaf spring is hinged and installed with a supporting platform through a bearing. A mounting seat is fixed at the front end of the supporting platform, and a rear sensor is installed at one end of the mounting seat. A reinforcing piece is installed at the rear end of the supporting platform. A prestressed cable net is installed between the supporting platform and the vehicle body. At both the front and rear ends of the top end of the supporting platform, connecting rods are installed, and the tops of the connecting rods are fixed to the bottom end of the vehicle body. At one end of each connecting rod, a hydraulic pull rod is provided, and the top ends of the hydraulic pull rods are connected to the bottom end of the vehicle body through connecting blocks. At the bottom end of each hydraulic pull rod, a hinge seat is installed. At both the front and rear ends of the hinge seat, a connecting shaft is installed, and one end of each connecting shaft is fixed to the outer side wall of the anti-arch multi-leaf spring.

[0006] Preferably, there are two groups of hydraulic pull rods, and the two groups of hydraulic pull rods are symmetrically distributed about the central axis of the vehicle body.

[0007] Preferably, ropes are fixed at both ends of the prestressed cable net. Hooks are movably arranged inside the ropes, and one end of each hook is fixed to the bottom end of the vehicle body and one side of the supporting platform respectively. Grooves are arranged inside the hooks. A first fixing hole is arranged on the left side inside the hook, and a second fixing hole is arranged on the right side inside the hook. Fixing pieces are arranged inside the first fixing hole and the second fixing hole.

[0008] Preferably, the cross-section of the lanyard matches that of the hook, and a clamping structure is formed between the lanyard and the hook.

[0009] Preferably, the outer side wall of the fixing member is uniformly provided with external threads, the inner parts of the first fixing hole and the second fixing hole are uniformly provided with internal threads, and a threaded connection is formed between the fixing member and the first fixing hole and the second fixing hole.

[0010] Preferably, a fixing seat is fixed on the outer side wall of the hydraulic pull rod, a connecting seat is movably arranged inside the fixing seat, a second scraping blade is fixed to the connecting seat on the left side of the fixing seat, and a clamping block is arranged inside the second scraping blade. A first scraping blade is fixed to the connecting seat on the right side of the fixing seat, and a clamping groove is arranged on one side inside the first scraping blade.

[0011] Preferably, the cross-section of the clamping groove is larger than that of the clamping block, and a clamping structure is formed between the clamping groove and the clamping block.

[0012] Preferably, the outer side wall of the connecting seat is uniformly provided with external threads, the inner side wall of the fixing seat is uniformly provided with internal threads, and a threaded connection is formed between the connecting seat and the fixing seat.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The anti-rear-end collision device for special vehicles not only realizes the prevention of vehicles from entering the dangerous area of large vehicles, enables the prestressed cable net to be disassembled and replaced, but also realizes the cleaning and protection of the pull rod in the hydraulic pull rod;

[0014] (1) When a vehicle is rear-ended, it can buffer small vehicles. The prestressed cable net is driven by a hydraulic or pneumatic cylinder to prevent vehicles from entering the dangerous area of large vehicles. It can be placed on the side and the tail, fixed by a supporting platform, prevent further intrusion into the tires, and is connected to the cab through a rear sensor to stop the vehicle safely in time to handle the accident. It can effectively reduce the serious car accidents caused by rear-end collisions or side impacts and the secondary injuries caused by continued dragging, greatly avoid vehicle destruction and death, and reduce the subsequent maintenance cost;

[0015] (2) By providing components such as fixing members, hooks, lanyards, and grooves, when the prestressed cable net is used, it is installed at the rear end and both sides of the vehicle. If the prestressed cable net is damaged and needs to be replaced during the protection period, the prestressed cable net can be conveniently replaced under the cooperation of the above components, thereby realizing that the anti-rear-end collision device is convenient for replacing and maintaining the prestressed cable net and is more convenient to use;

[0016] (3) By setting components such as a fixed seat, a first scraping blade, a second scraping blade, and a connecting seat, when the hydraulic pull rod is in use, the telescopic rod inside it will perform a telescopic function. However, when the telescopic rod inside the hydraulic pull rod is exposed for a long time, dust on the road is likely to adhere to its surface, and it will get stuck when the telescopic rod contracts into the inside of the hydraulic pull rod. Therefore, after adding the above components, the surface of the telescopic rod inside the hydraulic pull rod can be cleaned to ensure that the telescopic rod smoothly contracts back into the inside of the hydraulic pull rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the present utility model;

[0018] Figure 2 is a side view structural schematic diagram of the prestressed cable net of the present utility model;

[0019] Figure 3 of the present utility model Figure 2 is an enlarged structural schematic diagram of part A in;

[0020] Figure 4 is a front view structural schematic diagram of the first scraping blade of the present utility model.

[0021] In the figure: 1, vehicle body; 2, connecting rod; 3, connecting block; 4, hydraulic pull rod; 5, prestressed cable net; 6, supporting platform; 7, mounting seat; 8, bearing; 9, reinforcing plate; 10, anti-arch multi-leaf steel spring; 11, connecting shaft; 12, hinge seat; 13, rear sensor; 14, first fixing hole; 15, second fixing hole; 16, fixing member; 17, hook; 18, hanging rope; 19, groove body; 20, fixed seat; 21, first scraping blade; 22, card slot; 23, second scraping blade; 24, clamping block; 25, connecting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1: Please refer to Figures 1-4, A rear-end collision prevention device for a special vehicle, including a vehicle body 1. On the right side of the bottom end of the vehicle body 1, an anti-arch multi-leaf spring 10 is installed. One end of the anti-arch multi-leaf spring 10 is hinged and installed with a support platform 6 through a bearing 8. The front end of the support platform 6 is fixed with a mounting seat 7, and a rear sensor 13 is installed at one end of the mounting seat 7. A reinforcing plate 9 is installed at the rear end of the support platform 6. A prestressed cable net 5 is installed between the support platform 6 and the vehicle body 1. At the front and rear ends of the top end of the support platform 6, connecting rods 2 are installed, and the tops of the connecting rods 2 are fixed to the bottom end of the vehicle body 1. At one end of each of the connecting rods 2, a hydraulic pull rod 4 is provided, and the tops of the hydraulic pull rods 4 are connected to the bottom end of the vehicle body 1 through connecting blocks 3. At the bottom ends of the hydraulic pull rods 4, hinge seats 12 are installed. At the front and rear ends of the hinge seats 12, connecting shafts 11 are installed, and one end of each of the connecting shafts 11 is fixed to the outer side wall of the anti-arch multi-leaf spring 10. There are two groups of hydraulic pull rods 4, and the two groups of hydraulic pull rods 4 are symmetrically distributed about the central axis of the vehicle body 1, which makes the pulling of the prestressed cable net 5 more stable and the protection effect better;

[0024] Specifically, as Figure 1 and Figure 3 shown, when a rear-end collision accident occurs to the vehicle during use, the prestressed cable net 5 will be pushed to a certain angle by the rear-end collided vehicle, and then the rotation of the prestressed cable net 5 is limited by the pulling of the hydraulic pull rod 4 to prevent the vehicle from moving towards the bottom of the vehicle.

[0025] Embodiment 2: Hanging ropes 18 are fixed at both ends of the prestressed cable net 5. Hooks 17 are movably arranged inside the hanging ropes 18, and one end of each hook 17 is fixed to the bottom end of the vehicle body 1 and one side of the support platform 6 respectively. Groove bodies 19 are arranged inside the hooks 17. A first fixing hole 14 is arranged on the left side inside the hook 17, and a second fixing hole 15 is arranged on the right side inside the hook 17. Fixing members 16 are arranged inside the first fixing hole 14 and the second fixing hole 15. The cross-section of the hanging rope 18 matches the cross-section of the hook 17, and a clamping structure is formed between the hanging rope 18 and the hook 17. The outer side wall of the fixing member 16 is uniformly provided with external threads, and the inner sides of the first fixing hole 14 and the second fixing hole 15 are uniformly provided with internal threads. A threaded connection is formed between the fixing member 16 and the first fixing hole 14 and the second fixing hole 15. The fixing member 16 is convenient for locking the hook 17 and also convenient for disassembling and assembling from inside the hook 17;

[0026] Specifically, as Figure 1 and Figure 3As shown in the figure, when replacing the prestressed cable net 5, first unscrew the fixing parts 16 inside the two groups of hooks 17 in sequence, then take out the hanging ropes 18 from the grooves 19 inside the hooks 17, then fetch a new prestressed cable net 5 and hook the hanging ropes 18 at both ends of the prestressed cable net 5 into the hanging ropes 18 inside the hooks 17, and then fetch the fixing parts 16 and screw them into the corresponding second fixing holes 15 and first fixing holes 14 inside the hooks 17 to lock the hooks 17, thereby preventing the falling off of the hanging ropes 18 and ensuring the stable installation of the prestressed cable net 5.

[0027] Embodiment 3: A fixing seat 20 is fixed on the outer side wall of the hydraulic pull rod 4. A connecting seat 25 is movably arranged inside the fixing seat 20. A second scraping blade 23 is fixed on the connecting seat 25 on the left side of the fixing seat 20, and a clamping block 24 is arranged inside the second scraping blade 23. A first scraping blade 21 is fixed on the connecting seat 25 on the right side of the fixing seat 20, and a clamping groove 22 is arranged on one side inside the first scraping blade 21. The cross-section of the clamping groove 22 is larger than the cross-section of the clamping block 24. A clamping structure is formed between the clamping groove 22 and the clamping block 24. External threads are evenly arranged on the outer side wall of the connecting seat 25, and internal threads are evenly arranged on the inner side wall of the fixing seat 20. A threaded connection is formed between the connecting seat 25 and the fixing seat 20, so that the first scraping blade 21 and the second scraping blade 23 can be disassembled and assembled for maintenance, and the use effect is better.

[0028] Specifically, as Figure 4 shown in the figure, when the hydraulic pull rod 4 is in use, the clamping groove 22 inside the first scraping blade 21 is clamped with the clamping block 24 at one end of the connecting block 3, so that the first scraping blade 21 and the second scraping blade 23 form a whole and are sleeved on the outer side wall of the telescopic rod. Then rotate the first scraping blade 21 and the second scraping blade 23 so that the connecting seat 25 at one end is threadedly connected with the fixing seat 20, thereby installing the first scraping blade 21 and the second scraping blade 23 on the outer side wall of the hydraulic pull rod 4. When the telescopic rod inside the hydraulic pull rod 4 expands and contracts, the first scraping blade 21 and the second scraping blade 23 installed on one side of the fixing seat 20 will scrape the surface of the telescopic rod to ensure the smoothness of the telescopic rod retracting into the hydraulic pull rod 4.

[0029] Working principle: When the utility model is in use, the device can be installed at the rear end and both sides of the vehicle. When a vehicle rear-end accident occurs during use, the prestressed cable net 5 will be pushed to a certain angle by the rear-ended vehicle, and then the rotation of the prestressed cable net 5 will be limited by the pulling of the hydraulic pull rod 4 to prevent the vehicle from moving towards the bottom of the vehicle. At the same time, when the rear sensor 13 senses that a vehicle approaches the supporting platform 6, it will transmit the signal to the cab to notify the driver to stop in time and handle the accident. When the prestressed cable net 5 is damaged during the protection of the rear end and both sides of the vehicle, the fixing parts 16 inside the two groups of hooks 17 can be screwed out, and then the hanging ropes 18 can be taken out from the grooves 19 inside the hooks 17. Then, a new prestressed cable net 5 is taken, and one end of the hanging rope 18 is clamped into the inside of the hook 17, and then it is installed and used through the locking of the fixing parts 16. Moreover, during the process of the hydraulic pull rod 4 pulling the telescopic rod to expand and contract, the first scraping blade 21 and the second scraping blade 23 installed on one side of the fixed seat 20 will scrape the surface of the telescopic rod to prevent dust from entering the inside of the hydraulic pull rod 4 and affecting the smoothness of the subsequent telescopic rod expansion and contraction.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A rear-end collision prevention device for a special vehicle, comprising a vehicle body (1), characterized in that: On the right side of the bottom end of the vehicle body (1), a reverse-arch multi-leaf steel spring (10) is installed. One end of the reverse-arch multi-leaf steel spring (10) is hingedly installed with a support platform (6) through a bearing (8). A mounting seat (7) is fixed at the front end of the support platform (6), and a rear sensor (13) is installed at one end of the mounting seat (7). A reinforcing piece (9) is installed at the rear end of the support platform (6). A prestressed cable net (5) is installed between the support platform (6) and the vehicle body (1). Connecting rods (2) are installed at both the front and rear ends of the top end of the support platform (6), and the tops of the connecting rods (2) are fixed to the bottom end of the vehicle body (1). Hydraulic tie rods (4) are arranged at one ends of the connecting rods (2), and the tops of the hydraulic tie rods (4) are connected to the bottom end of the vehicle body (1) through connection blocks (3). Hinged seats (12) are installed at the bottom ends of the hydraulic tie rods (4). Connecting shafts (11) are installed at both the front and rear ends of the hinged seats (12), and one ends of the connecting shafts (11) are fixed to the outer side wall of the reverse-arch multi-leaf steel spring (10).

2. The anti-rear-end collision device for a special vehicle according to claim 1, characterized in that: Two groups of the hydraulic tie rods (4) are provided, and the two groups of the hydraulic tie rods (4) are symmetrically distributed about the central axis of the vehicle body (1).

3. The anti-rear-end collision device for special vehicles according to claim 1, wherein: Hanging ropes (18) are fixed at both ends of the prestressed cable net (5). Hooks (17) are movably arranged inside the hanging ropes (18), and one ends of the hooks (17) are fixed to the bottom end of the vehicle body (1) and one side of the support platform (6) respectively. Groove bodies (19) are arranged inside the hooks (17). A first fixing hole (14) is arranged on the left side inside the hook (17), and a second fixing hole (15) is arranged on the right side inside the hook (17). Fixing pieces (16) are arranged inside both the first fixing hole (14) and the second fixing hole (15).

4. The anti-rear-end collision device for a special vehicle according to claim 3, wherein: The cross section of the hanging rope (18) is matched with the cross section of the hook (17), and a clamping structure is formed between the hanging rope (18) and the hook (17).

5. The anti-rear-end collision device for a special vehicle according to claim 3, characterized in that: External threads are uniformly arranged on the outer side wall of the fixing piece (16), internal threads are uniformly arranged inside the first fixing hole (14) and the second fixing hole (15), and a threaded connection is formed between the fixing piece (16) and the first fixing hole (14) and the second fixing hole (15).

6. The anti-rear-end collision device for special vehicles according to claim 1, characterized in that: A fixing seat (20) is fixed on the outer side wall of the hydraulic tie rod (4). A connecting seat (25) is movably arranged inside the fixing seat (20). A second scraping piece (23) is fixed to the connecting seat (25) on the left side of the fixing seat (20), and a clamping block (24) is arranged inside the second scraping piece (23). A first scraping piece (21) is fixed to the connecting seat (25) on the right side of the fixing seat (20), and a clamping groove (22) is arranged on one side inside the first scraping piece (21).

7. The anti-rear-end collision device for a special vehicle according to claim 6, wherein: The cross section of the clamping groove (22) is larger than the cross section of the clamping block (24), and a clamping structure is formed between the clamping groove (22) and the clamping block (24).

8. The anti-rear-end collision device for a special vehicle according to claim 6, characterized in that: External threads are uniformly arranged on the outer side wall of the connecting seat (25), internal threads are uniformly arranged on the inner side wall of the fixing seat (20), and a threaded connection is formed between the connecting seat (25) and the fixing seat (20).

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