CN111254810A - Protection device after collision at bottom of viaduct - Google Patents

Abstract

The invention relates to the technical field of viaduct protection, and discloses a protection device after collision of a viaduct bottom, which comprises a bridge, wherein a damping device is fixedly arranged at the bottom of the bridge, pulleys are movably connected to two sides of the damping device and positioned at the bottom of the bridge, tracks are movably connected to the surfaces of the pulleys, a buffer device is fixedly arranged in the bridge, sliding grooves are formed in the inner walls of two sides of the interior of the bridge, when a vehicle collides with the viaduct bottom under special conditions, the roof contacts with the viaduct bottom, the tracks are contacted and move under the action of springs in the damping device, an upward force is applied to the viaduct bottom by the vehicle due to the height of the vehicle, the tracks are jacked, a corrugated pipe in the buffer device is compressed for a certain stroke, the roof and the tracks are kept to move, and the vehicle can normally move forward and exit from the viaduct bottom, the safety of the viaduct, the vehicle and people is protected to the maximum extent.

Description

A kind of protection device after the collision of viaduct bottom

technical field

The invention relates to the technical field of viaduct protection, in particular to a protection device for a viaduct bottom collision.

Background technique

Viaduct, a type of bridge, generally refers to bridges that span deep ravines in place of high embankments, and bridges that span roads in urban bridges, supported by high-support towers or pillars in urban traffic roads, and viaducts in urban traffic. It has a great effect, making full use of the urban area and reducing the pressure of urban traffic. Since the viaducts are supported by piers in mid-air, the height is limited. When some large trucks pass through without knowing the height limit, collisions will occur, causing the vehicles Stuck on the viaduct low or damage the viaduct, as there are also vehicles on the viaduct, in the event of an accident, the top of the vehicle is hit, and people will be injured. In addition, the damage caused by the bridge deck will also affect the smooth flow of the entire viaduct. The viaduct is expensive and expensive to maintain. It is very troublesome, so a new type of device to protect the viaduct came into being.

SUMMARY OF THE INVENTION

In order to achieve the above-mentioned purpose of protecting the viaduct to the greatest extent, the present invention provides the following technical solution: a protection device for a viaduct bottom collision, including a bridge, the bottom of the bridge is fixedly installed with a shock-absorbing device, and the shock-absorbing device is located on both sides of the bridge and is located at the bottom of the bridge. The bottom of the bridge is movably connected with pulleys, the surface of the pulleys is movably connected with crawler tracks, the inside of the bridge is fixedly installed with a buffer device, and the inner walls of both sides of the bridge are provided with chutes.

The beneficial effects of the present invention are: when the vehicle collides with the underpass of the viaduct under special circumstances, the roof of the vehicle contacts the underside of the bridge, and under the action of the inner spring of the shock absorbing device, the crawler tracks are brought into contact with the roof and move. Due to its own height, there will be an upward force on the bottom of the viaduct, which will push up the crawler, compress the bellows in the buffer device for a certain stroke, and keep the roof and crawler moving, so that the vehicle can move forward normally and drive out The bottom of the viaduct can protect the safety of the viaduct and vehicles and people to the greatest extent.

Preferably, the shock absorbing device is connected to the bottom of the bridge through a support column, one end of the support column away from the bridge is fixedly connected to the base, the interior of the base is provided with a first spring, and one side of the first spring is movably connected with a chain The side of the chain away from the first spring is fixedly connected to a box body, a second spring is arranged inside the box body, a pressure equalizing plate is fixedly connected to the bottom of the base, and a third spring is arranged inside the pressure equalizing plate. A roller is movably connected at the bottom, and a crawler track is arranged on the side of the roller away from the pressure equalizing plate.

Preferably, the buffer device is connected to the inside of the bridge through a connecting rod, a nut is sleeved on the surface of the connecting rod, an elastic washer is fixedly connected to the bottom of the nut, and the side of the elastic washer away from the nut is fixedly connected to the hydraulic telescopic rod. One side of the rod is fixedly connected with a symmetrical extrusion plate, and the symmetrical extrusion plate bracket is fixedly installed with a corrugated pipe.

Preferably, the chute fits the surface of the pulley, and the interior of the bridge is designed in layers.

Preferably, the track and pulley are fitted to the bottom of the bridge.

Description of drawings

1 is a cross-sectional view of a bridge bottom of the present invention;

Fig. 2 is the enlarged view of structure A of the present invention;

Figure 3 is an enlarged view of structure B of the present invention.

In the picture: 1-bridge, 2-shock absorber, 201-support column, 202-base, 203-first spring, 204-chain, 205-box, 206-second spring, 207-balance plate, 208 -Third spring, 209-roller, 3-pulley, 4-track, 5-buffer, 501-connecting rod, 502-nut, 503-elastic washer, 504-hydraulic telescopic rod, 505-extrusion plate, 506- Bellows, 6-chutes.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Fig. 1-3, a protective device after the bottom of a viaduct collides, including a bridge 1, a shock absorbing device 2 is fixedly installed at the bottom of the bridge 1, the shock absorbing device 2 is connected with the bottom of the bridge 1 through a support column 201, and the support column 201 One end away from the bridge 1 is fixedly connected with a base 202 , a first spring 203 is arranged inside the base 202 , a chain 204 is movably connected to one side of the first spring 203 , and a side of the chain 204 away from the first spring 203 is fixedly connected with a The box body 205 is provided with a second spring 206 inside the box body 205, a pressure equalizing plate 207 is fixedly connected to the bottom of the base 202, a third spring 208 is arranged inside the pressure equalizing plate 207, and a roller 209 is movably connected to the bottom of the pressure equalizing plate 207, The side of the roller 209 away from the pressure equalizing plate 207 is provided with the crawler 4, the two sides of the shock absorber 2 and the bottom of the bridge 1 are movably connected with the pulley 3, the surface of the pulley is movably connected with the crawler 4, and the crawler 4 is attached to the pulley 3. At the bottom of the bridge 1, a buffer device 5 is fixedly installed inside the bridge 1. The buffer device 5 is connected with the inside of the bridge 1 through a connecting rod 501. The surface of the connecting rod 501 is sleeved with a nut 502, and the bottom of the nut 502 is fixedly connected with an elastic washer 503, an elastic washer that can prevent bolts or nuts from loosening 502, the elastic washer 503 is made of graphite nylon (APS), medium carbon steel, 65Mn, SK5, SK7, stainless steel SUS304, aluminum, copper, beryllium copper, bronze and other materials, The surface treatment adopts Dacromet, blue and white zinc plating, color zinc, black zinc, nickel, chrome, blackening, quenching, tempering, carburizing and other processes. The side of the elastic washer 503 away from the nut 502 is fixedly connected to the hydraulic telescopic rod 504 One side of the connecting rod 501 is fixedly connected with a symmetrical extrusion plate 505, and the symmetrical extrusion plate 505 bracket is fixedly installed with a corrugated tube 506. Sensitive element, bellows 506 is widely used in instruments and meters, the main purpose is as a measuring element of pressure measuring instruments, converting pressure into displacement or force, bellows 506 has a thin wall, high sensitivity, and a measuring range of tens of Pa To tens of MPa, its open end is fixed, the sealed end is in a free state, and the auxiliary coil spring or reed is used to increase the elasticity, and it is elongated along the length of the tube under the action of internal pressure during operation, so that the movable end has a When the pressure has a certain displacement, the movable end drives the pointer to directly indicate the pressure. The bellows 506 is often combined with the displacement sensor to form a pressure sensor whose output is electricity, and is sometimes used as an isolation element. Due to the stretching requirements of the bellows 506 Large volume change, so its response speed is lower than Bourdon tube 506, bellows 506 is suitable for measuring low pressure, the inner walls of the bridge 1 are provided with chute 6 on both sides, and the chute 6 fits the surface of the pulley 3, and The interior of Bridge 1 is a layered design.

In use, when the vehicle collides with the underside of the bridge, the roof of the vehicle contacts the action of the track 4 on the pulley 3, the vehicle drives the track 4 to move, and the force at the moment of contact is absorbed by the spring in the shock absorber 2. The height will generate upward force on the crawler 4 and other devices, so that the overall structure moves up in the bridge 1. Under the action of the buffer device 5, the bellows 506 and the hydraulic telescopic rod 504 are compressed, and there will be a certain displacement. Under the action of the force, the tires of the car will also drop and keep moving normally, so that the vehicle can drive out of the bottom of the bridge.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Equivalent replacements or changes to the inventive concept shall all fall within the protection scope of the present invention.

Claims (5)

1. The utility model provides a protection device behind collision at bottom of overpass, includes bridge (1), its characterized in that: the bottom fixed mounting damping device (2) of bridge (1), the equal swing joint in bottom that the both sides of damping device (2) just are located bridge (1) have pulley (3), and the surperficial swing joint of pulley (3) has track (4), the inside fixed mounting of bridge (1) has buffer (5), and spout (6) have all been seted up to the inside both sides inner wall of bridge (1).

2. The device of claim 1, wherein the device is used for protecting the viaduct from a bottom collision: damping device (2) are passed through support column (201) with the bottom of bridge (1) and are connected, and the one end fixedly connected with base (202) of bridge (1) is kept away from in support column (201), and the inside of base (202) is provided with first spring (203), and one side swing joint of first spring (203) has clamp chain (204), and one side fixedly connected with box (205) of first spring (203) are kept away from in clamp chain (204), and the inside of box (205) is provided with second spring (206), bottom fixedly connected with equalizer plate (207) of base (202), the inside of equalizer plate (207) is provided with third spring (208), the bottom swing joint of equalizer plate (207) has gyro wheel (209), and one side that equalizer plate (207) were kept away from in gyro wheel (209) is provided with track (4).

3. The device of claim 2, wherein the device is used for protecting the viaduct from the bottom collision: buffer (5) are connected through connecting rod (501) with the inside of bridge (1), and nut (502) have been cup jointed on the surface of connecting rod (501), and the bottom fixed connection of nut (502) has elastic washer (503), and one side fixed connection hydraulic telescoping rod (504) of nut (502) are kept away from in elastic washer (503), one side fixed connection of connecting rod (501) has stripper plate (505) of symmetry, and stripper plate (505) support fixed mounting of symmetry has bellows (506).

4. The device of claim 1, wherein the device is used for protecting the viaduct from a bottom collision: the sliding groove (6) is attached to the surface of the pulley (3), and the interior of the bridge is designed in a layered mode.

5. The device of claim 1, wherein the device is used for protecting the viaduct from a bottom collision: the crawler belt (4) and the pulley (3) are attached to the bottom of the bridge (1).

Images