CN111576203B

CN111576203B - Bridge damping device with buffering performance

Info

Publication number: CN111576203B
Application number: CN202010483138.7A
Authority: CN
Inventors: 吴海军; 王旭; 陆萍
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-08-17
Anticipated expiration: 2040-06-01
Also published as: CN111576203A

Abstract

The invention belongs to the field of bridge shock absorption, and particularly relates to a bridge shock absorption device with a shock absorption performance, aiming at the problems that the existing shock absorption device has a single structure, poor shock absorption performance and poor shock absorption effect, cannot fully exert the shock absorption function, and even can damage the shock absorption device due to generated shock force to influence the service life of the shock absorption device, the invention provides the following scheme, which comprises a support, wherein the top of the support is provided with a shock absorption groove, the inner walls of the two sides of the shock absorption groove are respectively provided with a buffer groove, and the inner wall of one side, far away from the two buffer grooves, of the two buffer grooves is connected with the same buffer plate in a sliding way. The service life of the damping device is prolonged.

Description

Bridge damping device with buffering performance

Technical Field

The invention relates to the technical field of bridge damping, and particularly discloses a bridge damping device with a damping performance.

Background

The bridge is a building constructed for a road to cross natural or artificial barriers, and is erected on rivers, lakes and seas, so that vehicles, pedestrians and the like can smoothly pass through the bridge, when the vehicles run on the bridge, the vehicles and the bridge can generate a coupling phenomenon, the coupling phenomenon can bring certain vibration to the bridge, and a damping device is needed to help the bridge to damp.

The existing damping device is single in structure, poor in buffering performance and poor in damping effect, cannot give full play to the damping function, and the generated vibration force can even damage the bridge damping device and affect the service life of the damping device, so that the bridge damping device with the buffering performance is provided for solving the problem.

Disclosure of Invention

In view of this, the present invention provides a bridge damping device with a damping performance, which is used to solve the problems that the existing damping device has a single structure, poor damping performance and poor damping effect, cannot fully exert the damping function, and the generated vibration force even damages the damping device, thereby affecting the service life of the damping device.

In order to achieve the purpose, the invention provides a bridge damping device with buffering performance, which comprises a support, wherein the top of the support is provided with a damping groove, the inner walls of two sides of the damping groove are respectively provided with a buffering groove, the inner wall of one side, far away from each other, of the two buffering grooves is connected with the same buffering plate in a sliding manner, the inner bottom walls of the two buffering grooves are respectively fixedly connected with a telescopic rod, the top ends of the two telescopic rods are respectively and fixedly connected with the bottom of the buffering plate, the two telescopic rods are respectively sleeved with a first spring, the two ends of the two first springs are respectively and fixedly connected with the bottom of the buffering plate and the inner bottom walls of the two buffering grooves, the bottom of the buffering plate is symmetrically and fixedly connected with four fixing rods, the inner bottom wall of the damping groove is symmetrically and rotatably connected with two ball screws, the two ball screws are respectively and fixedly connected with screw nuts through threads, and the bottom ends of the four fixing rods are respectively and fixedly connected with the tops of the two screw nuts, the two ball screws are fixedly sleeved with gears, the inner bottom wall of the shock absorption groove is symmetrically and slidably connected with two racks which are respectively meshed with the two gears, the inner bottom wall of the shock absorption groove is fixedly connected with a U-shaped plate, the top of the U-shaped plate is fixedly connected with a first permanent magnet, the bottom of the buffer plate is symmetrically and fixedly connected with two second permanent magnets, the two first permanent magnets and the two second permanent magnets correspond to each other, the first permanent magnets and the second permanent magnets repel each other, the two sides of the racks are fixedly connected with second springs, the ends, away from each other, of the two second springs are respectively and fixedly connected with the inner wall of one side of the shock absorption groove and one side of the U-shaped plate, the top of the buffer plate is fixedly connected with a fixed strut, the top of the fixed strut is fixedly connected with a cover beam, and the top of the cover beam is slidably connected with a plurality of sliding seats, the top of a plurality of sliding seats is fixedly connected with the same beam body.

The beneficial effect of this basic scheme lies in: through carrying out multistage vertical shock attenuation and horizontal shock attenuation to the bridge main part, have good shock-absorbing capacity for the strong vibrations can not take place for the bridge main part, have protected the bridge main part, and can prevent dust damping device, have improved damping device's life.

Further, the rectangular channel has all been seted up on the both sides inner wall of bent cap, equal sliding connection has the sliding plate in two rectangular channels, the equal fixedly connected with connecting rod in one side that two sliding plates are close to each other, one side fixed connection that one end that two connecting rods are close to each other respectively and the sliding seat that is located both sides kept away from each other, the equal fixedly connected with third spring in one side that two sliding plates kept away from each other, one side inner wall fixed connection that one end that two third springs kept away from each other respectively and two rectangular channels kept away from each other. Has the advantages that: through setting up rectangular channel, sliding plate, connecting rod and third spring, can carry out effectual shock attenuation to the horizontal vibrations that the roof beam body produced, make the roof beam body can not produce great rocking.

Furthermore, the top of bent cap has seted up the spout, sliding connection has a plurality of blotters on the bottom inner wall of spout, the top of a plurality of blotters respectively with the bottom fixed connection of a plurality of sliding seats, the blotter is polystyrene resin. Has the advantages that: the spout can make blotter and sliding seat can the steady movement, can not take place the offset, and the blotter is polystyrene resin, has good shock-absorbing capacity.

Further, the bottom fixedly connected with a plurality of arc shock attenuation boards of support, the same shock insulation pad of bottom fixedly connected with of a plurality of arc shock attenuation boards, the shock insulation pad is elastic rubber. Has the advantages that: the arc shock attenuation board can provide certain cushion effect, and the shock insulation pad is elastic rubber, has good elasticity, can offset some vibrations.

Furthermore, the both sides of fixed stay all rotate and are connected with the dust guard, the top symmetry sliding connection of support has two movable plates, and the bottom of two dust guards rotates with the top of two movable plates respectively and is connected. Has the advantages that: through setting up the dust guard, can prevent that the dust from getting into the shock attenuation inslot, cause the pollution to the part in the shock attenuation inslot, improve damping device's life.

Furthermore, the bottom of rack symmetry fixedly connected with two bracing pieces, the bottom of two bracing pieces all with the interior diapire sliding connection in shock attenuation groove. Has the advantages that: the support rod can support the rack, and can enable the rack to move stably.

Furthermore, equal sliding connection has the gag lever post on the both sides inner wall of shock attenuation groove, and the one end that two gag lever posts are close to each other is respectively with one side fixed connection that two screw nuts kept away from each other. Has the advantages that: the limiting rod can limit the position of the screw nut, so that the screw nut can only move longitudinally and cannot shift.

Furthermore, two moving grooves are symmetrically formed in the top of the support, and the bottoms of the two moving plates are respectively in sliding connection with the inner bottom walls of the two moving grooves. Has the advantages that: the moving groove can reduce friction force, so that the moving plate can move more smoothly.

Furthermore, the top symmetry fixedly connected with two risers of support, the equal fixedly connected with fourth spring in one side that two risers are close to each other, one end that two fourth springs are close to each other respectively with the one side fixed connection that two movable plates kept away from each other. Has the advantages that: when the moving plate moves, the fourth spring is deformed, so that the shock absorption can be performed.

The invention has the beneficial effects that:

1. according to the bridge damping device with the buffering performance, the rectangular groove, the sliding plate, the connecting rod and the third spring are arranged, so that transverse vibration generated by the beam body can be effectively damped, and the beam body cannot shake greatly.

2. According to the bridge damping device with the buffering performance, disclosed by the invention, the buffer plate moves through the longitudinal displacement of the fixed support, the first spring can reduce the vibration force, meanwhile, the shock can be further absorbed through the ball screw, the screw nut gear, the rack and the second spring, and the buffer pad, the arc-shaped damping plate and the shock insulation pad are arranged, so that the good buffering force can be provided for the damping device, and the damping function of the damping device can be well exerted.

3. According to the bridge damping device with the buffering performance, the dust plate is arranged, so that dust can be prevented from entering the damping groove to pollute parts in the damping groove, and the service life of the damping device is prolonged.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

FIG. 1 is a front view of a bridge damping device with damping capabilities according to the present invention;

FIG. 2 is a schematic cross-sectional structural view of a support of a bridge damping device with damping performance according to the present invention;

FIG. 3 is an assembly view of a support and a fixing post of the bridge damping device with damping performance according to the present invention;

FIG. 4 is a schematic diagram of a three-dimensional structure of a rack of a bridge damping device with damping performance according to the present invention;

fig. 5 is an enlarged view of a portion a of a bridge damping device having a shock-absorbing function according to the present invention.

The drawings are numbered as follows: the shock absorption device comprises a support 1, a shock absorption groove 2, a buffer groove 3, a buffer plate 4, a telescopic rod 5, a first spring 6, a fixed rod 7, a ball screw 8, a screw nut 9, a gear 10, a rack 11, a second spring 12, a fixed strut 13, a cover beam 14, a sliding seat 15, a beam body 16, a rectangular groove 17, a sliding plate 18, a connecting rod 19, a third spring 20, a buffer pad 21, a supporting rod 22, a sliding groove 23, a shock isolation pad 24, an arc shock absorption plate 25, a dust prevention plate 26, a moving plate 27, a moving groove 28, a fourth spring 29, a U-shaped plate 30, a first permanent magnet 31, a second permanent magnet 32 and a limiting rod 33.

Detailed Description

The following is further detailed by way of specific embodiments:

as shown in FIGS. 1 to 5, a bridge damping device with buffering performance comprises a support 1, a damping groove 2 is formed at the top of the support 1, buffer grooves 3 are formed on the inner walls of two sides of the damping groove 2, the same buffer plate 4 is connected to the inner wall of the side, away from each other, of the two buffer grooves 3 in a sliding manner, telescopic rods 5 are fixedly connected to the inner bottom walls of the two buffer grooves 3, the top ends of the two telescopic rods 5 are fixedly connected to the bottom of the buffer plate 4, first springs 6 are sleeved on the two telescopic rods 5, the two ends of each first spring 6 are fixedly connected to the bottom of the buffer plate 4 and the inner bottom wall of the corresponding buffer groove 3, four fixing rods 7 are symmetrically and fixedly connected to the bottom of the buffer plate 4, two ball screws 8 are symmetrically and rotatably connected to the inner bottom wall of the damping groove 2, screw nuts 9 are respectively connected to the two ball screws 8 in a threaded manner, and the bottom ends of the four fixing rods 7 are, the two ball screws 8 are fixedly sleeved with gears 10, the inner side wall of the damping groove 2 is symmetrically and slidably connected with two racks 11, the two racks 11 are respectively meshed with the two gears 10, the inner bottom wall of the damping groove 2 is fixedly connected with a U-shaped plate 30, the top of the U-shaped plate 30 is fixedly connected with a first permanent magnet 31, the bottom of the buffer plate 4 is symmetrically and fixedly connected with two second permanent magnets 32, the two first permanent magnets 31 correspond to the two second permanent magnets 32, and the first permanent magnets 31 and the second permanent magnets 32 repel each other, owing to set up first permanent magnet 31 and second permanent magnet 32, and the two is homopolar magnet, can repel each other, also can offset a part shaking force, the equal fixedly connected with second spring 12 in both sides of rack 11, the one end that two second springs 12 kept away from each other respectively with one side inner wall of shock attenuation groove 2 and one side fixed connection of U-shaped board 30.

The top fixedly connected with fixed stay 13 of buffer board 4, the top fixedly connected with bent cap 14 of fixed stay 13, the top sliding connection of bent cap 14 has a plurality of sliding seat 15, the same roof beam body 16 of the top fixedly connected with of a plurality of sliding seat 15, through carrying out multistage vertical shock attenuation and horizontal shock attenuation to the bridge main part, good shock-absorbing capacity has, make the bridge main part can not take place strong vibrations, the bridge main part has been protected, and can prevent dust damping device, damping device's life has been improved.

In this embodiment, rectangular channel 17 has all been seted up on the both sides inner wall of bent cap 14, equal sliding connection has sliding plate 18 in two rectangular channels 17, the equal fixedly connected with connecting rod 19 in one side that two sliding plates 18 are close to each other, one side fixed connection that one end that two connecting rods 19 are close to each other respectively and the sliding seat 15 that is located both sides kept away from each other, the equal fixedly connected with third spring 20 in one side that two sliding plates 18 were kept away from each other, the one side inner wall fixed connection that one end that two third springs 20 were kept away from each other respectively and two rectangular channels 17 were kept away from each other, through setting up rectangular channel 17, sliding plate 18, connecting rod 19 and third spring 20, can carry out effectual shock attenuation to the horizontal vibrations that roof beam body 16 produced, make roof beam body 16 can not produce great rocking.

In this embodiment, spout 23 has been seted up at the top of bent cap 14, and sliding connection has a plurality of blotters 21 on the bottom inner wall of spout 23, and the top of a plurality of blotters 21 respectively with the bottom fixed connection of a plurality of sliding seat 15, blotter 21 be polystyrene resin, and spout 23 can make blotter and sliding seat 15 can steady movement, can not take place the offset, and blotter 21 is polystyrene resin, has good shock-absorbing capacity.

In this embodiment, a plurality of arc shock attenuation boards 25 of bottom fixedly connected with of support 1, the same shock insulation pad 24 of bottom fixedly connected with of a plurality of arc shock attenuation boards 25, shock insulation pad 24 are elastic rubber, and arc shock attenuation board 25 can provide certain cushion effect, and shock insulation pad 24 is elastic rubber, has good elasticity, can offset partly vibrations.

In this embodiment, the both sides of fixed stay 13 are all rotated and are connected with dust guard 26, and the top symmetry sliding connection of support 1 has two movable plates 27, and the bottom of two dust guards 26 rotates with the top of two movable plates 27 respectively and is connected, through setting up dust guard 26, can prevent that the dust from getting into damping slot 2 in, cause the pollution to the part in the damping slot 2, have improved damping device's life.

In this embodiment, two support rods 22 are fixedly connected to the bottom of the rack 11 symmetrically, the bottom ends of the two support rods 22 are connected to the inner bottom wall of the damping groove 2 in a sliding manner, the support rods 22 can support the rack 11, and the rack 11 can be moved stably.

In this embodiment, equal sliding connection has gag lever post 33 on the both sides inner wall of damping groove 2, and the one end that two gag lever posts 33 are close to each other respectively with two lead screw nut 9 one side fixed connection who keeps away from each other, gag lever post 33 can carry on spacingly for lead screw nut 9, makes lead screw nut 9 can only longitudinal movement, can not take place the offset.

In this embodiment, two moving grooves 28 are symmetrically formed in the top of the support 1, the bottoms of the two moving plates 27 are slidably connected to the inner bottom walls of the two moving grooves 28, and the moving grooves 28 can reduce friction, so that the moving plates 27 can move more smoothly.

In this embodiment, two risers of the symmetry fixedly connected with in top of support 1, the equal fixedly connected with fourth spring 29 in one side that two risers are close to each other, one side fixed connection that one end that two fourth springs 29 are close to each other respectively and two movable plates 27 keep away from each other, when movable plate 27 removed, can make fourth spring 29 take place deformation to can carry out the shock attenuation.

When the beam body 16 vibrates due to the driving of a vehicle, the beam body 16 can generate longitudinal displacement so that the sliding seats 15 move downwards, the cushion 21 is made of polystyrene resin and has good buffering performance so that part of vibration can be reduced, meanwhile, the beam body 16 can also generate transverse displacement, at the moment, the beam body 16 can enable the sliding seats 15 at two sides to transversely move, the connecting rod 19 can drive the sliding plate 18 to move, the third spring 20 can be deformed so as to offset the transverse vibration, the beam body 16 downwards moves and also enables the fixed support column 13 to downwards move, so that the buffer plate 4 can slide in the buffer groove 3, the telescopic rod 5 can enable the first spring 6 to deform, the buffer plate 4 downwards moves and also drives the lead screw nut 9 to move through the fixed rod 7, since the screw nut 9 and the ball screw 8 are connected by screw threads and the transmission of the screw nut and the ball screw 8 is reversible, the ball screw 8 can be rotated by the movement of the screw nut 9, the ball screw 8 can be rotated to drive the rack 11 to move through the gear 10, so that the second spring 12 can be deformed, and further damping can be performed, since the first permanent magnet 31 and the second permanent magnet 32 are provided, and the two magnets are homopolar magnets which repel each other and can also counteract a part of vibration force, and the arc-shaped damping plate 25 and the shock-isolating pad 24 are provided, and the shock-isolating pad 24 is elastic rubber, good elasticity is provided, and a buffer force can be well provided, when the fixed support column 13 is moved, the movable plate 27 can be driven to move through the dust-proof plate 26, the fourth spring 29 can be deformed, damping can be performed again, and the dust-proof plate 26 is provided, can prevent dust from entering the damping groove 2 and polluting the parts in the damping groove 2, and prolongs the service life of the damping device.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. A bridge damping device with buffering performance comprises a support (1) and is characterized in that damping grooves (2) are formed in the top of the support (1), buffer grooves (3) are formed in the inner walls of the two sides of each damping groove (2), the inner wall, far away from each other, of one side of each of the two buffer grooves (3) is connected with the same buffer plate (4) in a sliding mode, telescopic rods (5) are fixedly connected to the inner bottom walls of the two buffer grooves (3), the top ends of the two telescopic rods (5) are fixedly connected with the bottom of each buffer plate (4), first springs (6) are sleeved on the two telescopic rods (5), the two ends of each first spring (6) are fixedly connected with the bottom of each buffer plate (4) and the inner bottom walls of the two buffer grooves (3) respectively, four fixing rods (7) are fixedly connected to the bottom of each buffer plate (4) in a symmetrical mode, and two ball screws (8) are connected to the inner bottom wall of each damping groove (2) in a symmetrical mode, the two ball screws (8) are all in threaded connection with screw nuts (9), the bottom ends of the four fixing rods (7) are respectively fixedly connected with the tops of the two screw nuts (9), the two ball screws (8) are respectively and fixedly sleeved with gears (10), the inner side wall of the damping groove (2) is symmetrically and slidably connected with two racks (11), the two racks (11) are respectively meshed with the two gears (10), the inner bottom wall of the damping groove (2) is fixedly connected with a U-shaped plate (30), the top of the U-shaped plate (30) is fixedly connected with a first permanent magnet (31), the bottom of the buffer plate (4) is symmetrically and fixedly connected with two second permanent magnets (32), the two first permanent magnets (31) correspond to the two second permanent magnets (32), and the first permanent magnets (31) and the second permanent magnets (32) repel each other, the equal fixedly connected with second spring (12) in both sides of rack (11), the one end that two second springs (12) kept away from each other respectively with one side inner wall of shock attenuation groove (2) and one side fixed connection of U-shaped board (30), the top fixedly connected with pillar (13) of buffer board (4), the top fixedly connected with bent cap (14) of pillar (13), the top sliding connection of bent cap (14) has a plurality of sliding seats (15), the same roof beam body (16) of the top fixedly connected with of a plurality of sliding seats (15).

2. The bridge damping device with the damping performance according to claim 1, wherein the inner walls of the two sides of the bent cap (14) are respectively provided with a rectangular groove (17), the two rectangular grooves (17) are respectively and slidably connected with a sliding plate (18), one side of the two sliding plates (18) close to each other is respectively and fixedly connected with a connecting rod (19), one end of the two connecting rods (19) close to each other is respectively and fixedly connected with one side of the sliding seats (15) located at the two sides away from each other, one side of the two sliding plates (18) away from each other is respectively and fixedly connected with a third spring (20), and one end of the two third springs (20) away from each other is respectively and fixedly connected with one side of the inner walls of the two rectangular grooves (17) away from each other.

3. The bridge damping device with the damping performance according to claim 1, wherein a sliding groove (23) is formed at the top of the cover beam (14), a plurality of cushion pads (21) are slidably connected to the inner wall of the bottom of the sliding groove (23), the top of each cushion pad (21) is fixedly connected to the bottom of each sliding seat (15), and each cushion pad (21) is made of polystyrene resin.

4. The bridge damping device with the damping performance as claimed in claim 1, wherein a plurality of arc-shaped damping plates (25) are fixedly connected to the bottom of the support (1), the same vibration isolating pad (24) is fixedly connected to the bottom of the plurality of arc-shaped damping plates (25), and the vibration isolating pad (24) is made of elastic rubber.

5. The bridge damping device with the buffering performance as claimed in claim 1, wherein the two sides of the fixed pillar (13) are rotatably connected with the dust guard (26), the top of the support (1) is symmetrically and slidably connected with the two moving plates (27), and the bottoms of the two dust guards (26) are respectively rotatably connected with the tops of the two moving plates (27).

6. The bridge shock absorber with shock-absorbing capacity as claimed in claim 1, wherein two support rods (22) are symmetrically and fixedly connected to the bottom of the rack (11), and the bottom ends of the two support rods (22) are slidably connected to the inner bottom wall of the shock-absorbing groove (2).

7. The bridge damping device with the damping performance according to claim 1, wherein limiting rods (33) are slidably connected to inner walls of two sides of the damping groove (2), and ends, close to each other, of the two limiting rods (33) are fixedly connected to one sides, far away from each other, of the two lead screw nuts (9) respectively.

8. The bridge shock absorber with buffering performance as claimed in claim 5, wherein the top of the support (1) is symmetrically provided with two moving grooves (28), and the bottoms of the two moving plates (27) are slidably connected with the inner bottom walls of the two moving grooves (28), respectively.

9. The bridge damping device with damping capacity of claim 5, characterized in that two vertical plates are symmetrically and fixedly connected to the top of the support (1), a fourth spring (29) is fixedly connected to each side of the two vertical plates close to each other, and the ends of the two fourth springs (29) close to each other are fixedly connected to each side of the two moving plates (27) away from each other.