Highway bridge expansion device

Abstract

The utility model provides a highway bridge expansion device, which relates to the technical field of highway bridges and comprises a base, the top of the base is provided with a first expansion mechanism, the top of the first expansion mechanism is provided with a first fixing shell, one side of the first fixing shell is provided with a limiting groove, and a threaded rod is rotatably connected in the first fixing shell. The outer surface of the threaded rod is sleeved with a lifting block, the lifting block movably penetrates through the limiting groove, and a second telescopic mechanism is arranged on one side of the lifting block. According to the device, when the height of the corrugated plate needs to be adjusted, the rotating handle is rotated, two bevel gears are connected in a meshed mode, so that the threaded rod is driven to rotate, the lifting block is limited through the limiting groove, the threaded rod drives the lifting block to move up and down, then the corrugated plate is driven to move up and down, and the protection height of the corrugated plate is conveniently adjusted; the application range is widened, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridges, in particular to a highway bridge expansion device. Background Art

[0002] With the development of science and technology, cars have become an essential means of transportation for people to travel, but at the same time, cars are prone to cause safety problems during driving. Highway bridges are frequent areas of traffic accidents. When the speed is too fast or the driver is fatigued, the car is easy to rush down from the sides of the road or bridge, causing serious damage to people's lives and property. Therefore, it is very important to install anti-collision telescopic devices on highway bridges. Now people often set up guardrails on both sides of roads or bridges for protection.

[0003] However, the existing highway bridge expansion device is not convenient for adjusting the protection height during use, which reduces the scope of application, reduces the practicability of the device, and has poor use effect. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that it is inconvenient to adjust the protection height, thereby reducing the scope of application, and proposes a highway bridge expansion device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a highway bridge telescopic device, comprising a base, a first telescopic mechanism is arranged on the top of the base, a first fixed shell is arranged on the top of the first telescopic mechanism, a limiting groove is provided on one side of the first fixed shell, a threaded rod is rotatably connected in the first fixed shell, a lifting block is sleeved on the outer surface of the threaded rod, the lifting block movably passes through the limiting groove, a second telescopic mechanism is arranged on one side of the lifting block, a corrugated plate is arranged on one side of the second telescopic mechanism, a rotating shaft is rotatably connected on the inner side of the first fixed shell, one end of the rotating shaft movably passes through the first fixed shell, a rotating handle is fixedly installed on one end of the rotating shaft, and two bevel gears are arranged on the outer surface of the threaded rod at the other end of the rotating shaft, the two bevel gears are meshed and connected, and a mounting hole is provided on the surface of the base.

[0006] Preferably, the first telescopic mechanism comprises a fixed frame, the fixed frame is fixedly connected to the top of the base, and a fixed rod is fixedly connected inside the fixed frame.

[0007] Preferably, a return spring is sleeved on the outer surface of the fixing rod, a sliding seat is sleeved on the outer surface of the fixing rod, and the first fixing shell is fixedly connected to the top of the sliding seat.

[0008] Preferably, the second telescopic mechanism comprises a second fixed shell, the second fixed shell is fixedly connected to one side of the lifting block, and a shock-absorbing spring is fixedly connected inside the second fixed shell.

[0009] Preferably, one end of the shock absorbing spring is fixedly connected to a movable plate, a sliding groove is provided on the inner side of the second fixed shell, a sliding block is slidably connected in the sliding groove, and one side of the sliding block is fixedly connected to the movable plate.

[0010] Preferably, a connecting plate is provided in the second fixed shell, one side of the connecting plate is fixedly connected to a connecting column, one side of the connecting column is fixedly connected to the corrugated plate, and the connecting column movably passes through the second fixed shell.

[0011] Preferably, two U-shaped blocks are fixedly connected to one side of the connecting plate and the movable plate, the inner sides of the two U-shaped blocks are rotatably connected to movable rods, and a damper is arranged in the second fixed shell.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, when the height of the corrugated plate needs to be adjusted, the handle is rotated. Since the two bevel gears are meshed and connected, the threaded rod is driven to rotate, and the limit groove limits the lifting block, so that the threaded rod drives the lifting block to move up and down, and then drives the corrugated plate to move up and down, which is convenient for adjusting the protective height of the corrugated plate, increases the scope of application, and improves the practicability of the device.

[0014] 2. In the utility model, by providing a second telescopic mechanism, when the corrugated plate is subjected to impact force, the corrugated plate drives the connecting column to move, and with the cooperation of the two U-shaped blocks and the movable rod, drives the movable plate to move, and the movable plate drives the slider to slide synchronously in the slide groove, and at the same time, the shock-absorbing spring begins to contract when being squeezed, and under the elastic force of the shock-absorbing spring and the damping action of the damper, the impact force is further buffered, the buffering effect is improved, and further danger of the vehicle running off the road or bridge is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A stereoscopic diagram of the main structure of a highway bridge expansion device is proposed for the utility model;

[0016] Figure 2 A rear structural stereogram of a highway bridge expansion device is provided for the utility model;

[0017] Figure 3 The utility model provides a three-dimensional cross-sectional structure diagram of a first fixed shell in a highway bridge expansion device;

[0018] Figure 4 The utility model provides a sectional and stereoscopic diagram of a second telescopic mechanism in a highway bridge telescopic device.

[0019] Legend: 1. Base; 2. First telescopic mechanism; 201. Fixed frame; 202. Fixed rod; 203. Reset spring; 204. Sliding seat; 3. First fixed shell; 4. Limiting groove; 5. Threaded rod; 6. Lifting block; 7. Second telescopic mechanism; 701. Second fixed shell; 702. Shock-absorbing spring; 703. Moving plate; 704. Slide groove; 705. Sliding block; 706. Connecting plate; 707. Connecting column; 708. U-shaped block; 709. Movable rod; 710. Damper; 8. Corrugated plate; 9. Rotating shaft; 10. Rotating handle; 11. Bevel gear; 12. Mounting hole. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1, as Figure 1 - Figure 4 As shown, the utility model provides a highway bridge telescopic device, including a base 1, a first telescopic mechanism 2 is arranged on the top of the base 1, a first fixed shell 3 is arranged on the top of the first telescopic mechanism 2, a limiting groove 4 is opened on one side of the first fixed shell 3, a threaded rod 5 is rotatably connected in the first fixed shell 3, a lifting block 6 is sleeved on the outer surface of the threaded rod 5, the lifting block 6 is movably passed through the limiting groove 4, a second telescopic mechanism 7 is arranged on one side of the lifting block 6, a corrugated plate 8 is arranged on one side of the second telescopic mechanism 7, a rotating shaft 9 is rotatably connected to the inner side of the first fixed shell 3, one end of the rotating shaft 9 is movably passed through the first fixed shell 3, a rotating handle 10 is fixedly installed on one end of the rotating shaft 9, the other end of the rotating shaft 9 is provided with two bevel gears 11 on the outer surface of the threaded rod 5, the two bevel gears 11 are meshed and connected, and a mounting hole 12 is opened on the surface of the base 1.

[0023] The effect achieved by the entire embodiment 1 is that when the height of the corrugated plate 8 needs to be adjusted, the handle 10 is rotated. Since the two bevel gears 11 are meshed and connected, the threaded rod 5 is driven to rotate, and the limiting groove 4 limits the lifting block 6, so that the threaded rod 5 drives the lifting block 6 to move up and down, and then drives the corrugated plate 8 to move up and down, which is convenient for adjusting the protective height of the corrugated plate 8, increases the scope of application, and improves the practicability of the device.

[0024] Embodiment 2, as Figure 1 - Figure 4As shown, the first telescopic mechanism 2 includes a fixed frame 201, the fixed frame 201 is fixedly connected to the top of the base 1, a fixed rod 202 is fixedly connected inside the fixed frame 201, a reset spring 203 is sleeved on the outer surface of the fixed rod 202, a sliding seat 204 is sleeved on the outer surface of the fixed rod 202, the first fixed shell 3 is fixedly connected to the top of the sliding seat 204, the second telescopic mechanism 7 includes a second fixed shell 701, the second fixed shell 701 is fixedly connected to one side of the lifting block 6, a damping spring 702 is fixedly connected inside the second fixed shell 701, one end of the damping spring 702 is fixedly connected to the moving plate 703, and the second fixed A slide groove 704 is provided on the inner side of the shell 701, and a slider 705 is slidably connected in the slide groove 704, one side of the slider 705 is fixedly connected to the movable plate 703, a connecting plate 706 is provided in the second fixed shell 701, one side of the connecting plate 706 is fixedly connected to a connecting column 707, one side of the connecting column 707 is fixedly connected to the corrugated plate 8, and the connecting column 707 movably passes through the second fixed shell 701, two U-shaped blocks 708 are fixedly connected to the connecting plate 706 and one side of the movable plate 703, the inner sides of the two U-shaped blocks 708 are rotatably connected to movable rods 709, and a damper 710 is provided in the second fixed shell 701.

[0025] The effect achieved by the entire embodiment 2 is that, by providing the first telescopic mechanism 2, when the corrugated plate 8 is impacted, the impact force drives the corrugated plate 8 to move, thereby causing the first fixed shell 3 to drive the sliding seat 204 to move, and compressing the reset spring 203, thereby achieving buffering of the impact force, avoiding rigid contact to damage the corrugated plate 8 and causing the vehicle to run off the road or bridge, and then by providing the second telescopic mechanism 7, when the corrugated plate 8 is impacted, the corrugated plate 8 drives the connecting column 707 to move, and with the cooperation of the two U-shaped blocks 708 and the movable rod 709, drives the moving plate 703 to move, and the moving plate 703 drives the slider 705 to slide synchronously in the slide groove 704, and at the same time, the shock-absorbing spring 702 is squeezed and begins to shrink, and under the elastic force of the shock-absorbing spring 702 and the damping action of the damper 710, the impact force is further buffered, the buffering effect is improved, and further danger of the vehicle running off the road or bridge is avoided.

[0026] Working principle: When in use, the base 1 is installed on the ground using the provided mounting hole 12, and then the handle 10 is turned. Since the two bevel gears 11 are meshed and connected, the threaded rod 5 is driven to rotate, and the limit groove 4 limits the lifting block 6, so that the threaded rod 5 drives the lifting block 6 to move up and down, and then drives the corrugated plate 8 to move up and down, and adjusts the corrugated plate 8 to a suitable protection height. When the corrugated plate 8 is hit by a vehicle, the corrugated plate 8 is subjected to impact force, and the corrugated plate 8 drives the connecting column 707 to move, and between the two U-shaped blocks 708 and the movable rod 7 09, the movable plate 703 is driven to move, and the movable plate 703 drives the slider 705 to slide synchronously in the slide groove 704. At this time, the shock-absorbing spring 702 is squeezed and begins to shrink. Under the elastic force of the shock-absorbing spring 702 and the damping action of the damper 710, the impact force is buffered. At the same time, the first fixed shell 3 drives the sliding seat 204 to move synchronously, and compresses the reset spring 203, thereby further buffering the impact force, improving the buffering effect, and further avoiding further dangers of the vehicle running off the road or bridge.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A highway bridge expansion device, comprising a base (1), characterized in that: A first telescopic mechanism (2) is arranged on the top of the base (1), a first fixed shell (3) is arranged on the top of the first telescopic mechanism (2), a limiting groove (4) is provided on one side of the first fixed shell (3), a threaded rod (5) is rotatably connected inside the first fixed shell (3), a lifting block (6) is sleeved on the outer surface of the threaded rod (5), the lifting block (6) movably passes through the limiting groove (4), a second telescopic mechanism (7) is arranged on one side of the lifting block (6), a corrugated plate (8) is arranged on one side of the second telescopic mechanism (7), a rotating shaft (9) is rotatably connected inside the first fixed shell (3), one end of the rotating shaft (9) movably passes through the first fixed shell (3), a rotating handle (10) is fixedly installed on one end of the rotating shaft (9), the other end of the rotating shaft (9) is provided with two bevel gears (11) on the outer surface of the threaded rod (5), the two bevel gears (11) are meshingly connected, and a mounting hole (12) is arranged on the surface of the base (1).

2. A highway bridge expansion device according to claim 1, characterized in that: The first telescopic mechanism (2) comprises a fixed frame (201), the fixed frame (201) is fixedly connected to the top of the base (1), and a fixed rod (202) is fixedly connected inside the fixed frame (201).

3. A highway bridge expansion device according to claim 2, characterized in that: The outer surface of the fixed rod (202) is sleeved with a return spring (203), the outer surface of the fixed rod (202) is sleeved with a sliding seat (204), and the first fixed shell (3) is fixedly connected to the top of the sliding seat (204).

4. A highway bridge expansion device according to claim 1, characterized in that: The second telescopic mechanism (7) comprises a second fixed shell (701), the second fixed shell (701) is fixedly connected to one side of the lifting block (6), and a shock absorbing spring (702) is fixedly connected inside the second fixed shell (701).

5. A highway bridge expansion device according to claim 4, characterized in that: One end of the shock absorbing spring (702) is fixedly connected to a movable plate (703), a sliding groove (704) is provided on the inner side of the second fixed shell (701), a sliding block (705) is slidably connected in the sliding groove (704), and one side of the sliding block (705) is fixedly connected to the movable plate (703).

6. A highway bridge expansion device according to claim 4, characterized in that: A connecting plate (706) is provided in the second fixed shell (701), one side of the connecting plate (706) is fixedly connected to a connecting column (707), one side of the connecting column (707) is fixedly connected to the corrugated plate (8), and the connecting column (707) movably passes through the second fixed shell (701).

7. A highway bridge expansion device according to claim 6, characterized in that: Two U-shaped blocks (708) are fixedly connected to one side of the connecting plate (706) and the movable plate (703), and the inner sides of the two U-shaped blocks (708) are rotatably connected to movable rods (709), and a damper (710) is arranged in the second fixed shell (701).

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