CN106758795B

CN106758795B - Bridge shock absorber

Info

Publication number: CN106758795B
Application number: CN201710044341.2A
Authority: CN
Inventors: 王子健; 王丽萍; 赵宝云; 王志华; 王国胜; 辛军; 雷力
Original assignee: Xinjiang Jiaojian Municipal Engineering Co Ltd; Chongqing University of Science and Technology
Current assignee: Xinjiang Jiaojian Municipal Engineering Co Ltd; Chongqing University of Science and Technology
Priority date: 2017-01-19
Filing date: 2017-01-19
Publication date: 2019-03-22
Anticipated expiration: 2037-01-19
Also published as: CN106758795A

Abstract

The invention discloses a bridge shock-absorbing support, comprising a base, a plurality of damping wheels supported on the base by a vibration-absorbing spring and a damper, supported by the plurality of the damping wheels and connected with the damping The supporting plate for the rolling fit of the wheel, the planetary gear mechanism for accelerating the rotation of the damping wheel, and the rotary damper for damping the rotation of the damping wheel can effectively block the transmission from the bridge pier to the bridge during an earthquake. transmit vibration.

Description

Shock-absorbing bridge support

Technical field

The present invention relates to bridge aseismic devices field, specifically a kind of shock-absorbing bridge support.

Background technique

Bridge erection is in rivers,lakes and seas, the building for making traffic etc. that can smoothly pass through, referred to as bridge.Bridge generally by Superstructure, substructure and attached structure composition, superstructure refer mainly to bridge span structure and support system；Substructure packet Include abutment, bridge pier and basis；Attached structure then refers to transition slab at bridge head, truncated cone banking, shore protection, training works etc..

Bridge refers to as road the building built across natural or cultural obstacle.Bridge is generally by five big portions Part and five widgets composition, five big components refer to that bridge bears the spanning superstructure of automobile or other vehicle transport loads under Portion's structure, be bridge structure safe guarantee include bridge span structure (or bridge opening structure superstructure), bridge pad system, Bridge pier, cushion cap, digs a well or pile foundation at abutment.Five widgets refer to component directly related with bridge service function, and the past is known as bridge Surface construction includes deck paving, waterproof and water drainage system, railing, expansion joint, lighting.There are also ends of the bridge for large bridge accessory structure Fort, the setting such as access bridge.

With the development of transportation and the raising of construction standard, support in bridge and Other Engineering not only It plays a supporting role, but also has the function of vibration damping, resistance to plucking, release moment of flexure, resist displacement.Currently, occurring often in advance in earthquake The reason of the case where bridge plate processed falls from bridge pier beam, bridge plate falls from bridge pier beam is, when an earthquake occurs, Very big horizontal force and vertical force are produced, makes precast bridge plate that horizontal displacement and upper and lower displacement occur, when displacement is more than pre- Bridge plate processed on bridge pier shelve width after, bridge plate will fall, at this point, not only bridge is damaged, Er Qieqiao The upper, pedestrian under bridge and vehicle will appear serious accident.

Therefore, it is necessary to a kind of shock-absorbing bridge supports that can effectively block in earthquake from bridge pier to bridge transmitting vibration.

Summary of the invention

In view of this, providing one kind can be effective in earthquake the purpose of the present invention is overcoming defect in the prior art Block the shock-absorbing bridge support from bridge pier to bridge transmitting vibration.

Shock-absorbing bridge support of the invention, including pedestal, the pedestal is supported on by shock-absorbing spring and damper jointly On multiple damping wheels, pass through multiple damping wheels bearings and roll the support plate of cooperation, to the damping wheel with damping wheel Rotation carry out speedup planetary gear mechanism and for damping wheel rotation apply damping action rotary damper, institute The outer gear ring transmission connection of planetary gear mechanism is stated in the damping wheel, the planet carrier of planetary gear mechanism is by can be in a manner of clutch It is connect with the pedestal；The rotary damper include with the sun gear of planetary gear mechanism transmission connection active friction disk and It is arranged in the circumferentially fixed mode that slides axially and with the driven friction disk of active friction disk cooperation and for will be described Driven friction disk presses to the spring I of the active friction disk；

Further, the shell of the planetary gear mechanism is fixed on the pedestal, and the planet carrier outer surface is equipped with positioning Slot, the inner walls are equipped with blind hole, are equipped with steel ball and the spring II for steel ball to be pressed to the locating slot in the blind hole；

Further, the outer gear ring of the planetary gear mechanism is connected to the damping wheel by universal drive festival；

Further, piston cylinder is equipped on the pedestal in the horizontal direction, the piston cylinder is interior circumferentially fixed to slide axially Mode be equipped with piston, the driven friction disk is set to piston-top surface, the spring bullet peak at piston and piston cylinder bottom it Between；

The beneficial effects of the present invention are: shock-absorbing bridge support of the invention, pedestal can be fixed on bridge pier, and support plate is used for Supporting bridge, and support plate is supported by multiple damping wheels simultaneously, damping wheel is propped up along the vertical direction by damper and damping spring Hold, thus realize support plate when the vehicle in the buffering and damping action of vertical direction, bridge causes bridge to vibrate by a small margin, Bridge will drive support plate to vibrate in the horizontal direction, this rotates driving damping wheel, and damping wheel will be hindered by planetary gear mechanism The revolving speed of Buddhist nun's wheel amplifies (planet carrier is engaged with pedestal at this time is kept fixed it), and active friction disk is driven to rotate, circumferential solid Fixed driven disc hinders driving disc spacing pressing to rotate to being engaged with driving disc spacing pressing and finally hinders the small size of bridge by spring I pushing tow Horizontal vibration is spent, when an earthquake occurs, ground drives bridge pier that violent oscillatory motion occurs, and the horizontal movement of bridge and bridge pier will drive Damping wheel rotation, the planet carrier of planetary gear mechanism and base-separation at this time, planet carrier is free to rotate, therefore turn of damping wheel Dynamic only to drive planet carrier idle running, damping wheel not will receive any damping action, at this point, the vibration of bridge pier will not be passed up to Bridge guarantees that bridge not will receive destruction in earthquake.

Detailed description of the invention

The invention will be further described with reference to the accompanying drawings and examples:

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is the structural schematic diagram of rotary damper of the invention；

Fig. 3 is the structural schematic diagram of planetary gear mechanism of the invention；

Fig. 4 is the partial enlarged view in Fig. 2 at A；

Fig. 5 is the partial enlarged view that B goes out in Fig. 3.

Specific embodiment

Fig. 1 is the structural diagram of the present invention；Fig. 2 is the structural schematic diagram of rotary damper of the invention；Fig. 3 is this hair The structural schematic diagram of bright planetary gear mechanism 6 as shown, 5 damping device of bridge of the present embodiment, including pedestal 1, passes through Shock-absorbing spring and damper be supported on jointly multiple damping wheels 3 on the pedestal 1, by multiple bearings of damping wheels 3 simultaneously The support plate 2 of cooperation is rolled with damping wheel 3, the planetary gear mechanism 6 of speedup is carried out to the rotation of the damping wheel 3 and is used for Apply the rotary damper of damping action to the rotation of damping wheel 3, the outer gear ring of the planetary gear mechanism 6 is sequentially connected in institute State damping wheel 3, the planet carrier 12 of planetary gear mechanism 6 with the pedestal 1 can connect in a manner of clutch；The rotary damper Including the active friction disk 19 with the transmission connection of the sun gear 15 of planetary gear mechanism 6 and in the circumferentially fixed mode that slides axially It is arranged and described with the driven friction disk 18 of the active friction disk 19 cooperation and for pressing to the driven friction disk 18 The spring I of active friction disk 19, pedestal 1 can be fixed on bridge pier 4, and support plate 2 is used to support bridge 5, and support plate 2 simultaneously by Multiple damping wheels 3 support, and damping wheel 3 is supported along the vertical direction by damper 9 and damping spring 8, to realize that support plate 2 exists The buffering and damping action of vertical direction, when the vehicle on bridge 5 causes bridge 5 to vibrate by a small margin, bridge 5 will drive support plate 2 vibrate in the horizontal direction, this rotates driving damping wheel 3, and damping wheel 3 is put the revolving speed of damping wheel 3 by planetary gear mechanism 6 (planet carrier 12 is engaged with pedestal 1 at this time is kept fixed it) greatly, and active friction disk 19 is driven to rotate, circumferentially fixed is driven Disk hinders driving disc spacing pressing to rotate to being engaged with driving disc spacing pressing and finally hinders the water by a small margin of bridge 5 by spring I16 pushing tow Flat vibration, when an earthquake occurs, ground drive bridge pier 4 that violent oscillatory motion occurs, and the horizontal movement of bridge 5 and bridge pier 4 will drive Damping wheel 3 rotates, and the planet carrier 12 of planetary gear mechanism 6 is separated with pedestal 1 at this time, and planet carrier 12 is free to rotate, therefore hinders The rotation of Buddhist nun's wheel 3 only will drive planet carrier 12 to dally, and damping wheel 3 not will receive any damping action, at this point, the vibration of bridge pier 4 It will not be passed up to bridge 5, guarantee that bridge 5 not will receive destruction in earthquake.

In the present embodiment, the shell 10 of the planetary gear mechanism 6 is fixed on the pedestal 1,12 appearance of planet carrier Face is equipped with locating slot, and locating slot is the arc groove cooperated with steel ball 14, and 10 inner wall of shell is equipped with blind hole, sets in the blind hole There are steel ball 14 and the spring II14 for steel ball 14 to be pressed to the locating slot, when the generation of bridge 5 is vibrated by a small margin, steel ball 14 A part is pressed into locating slot by spring II14, and pedestal 1, shell 10 and planet carrier 12 are kept fixed at this time, and damping wheel 3 will pass through Sun gear 15 drives active friction disk 19 to rotate, and when an earthquake occurs, high-speed rotation, steel ball 14 will be overcome spring by damping wheel 3 The pressure of II14 skids off the locating slot, and planet carrier 12 will dally at this time, and damping wheel 3 not will receive any damping action, The horizontal vibration of bridge pier 4 is transmitted without normal direction bridge 5, and bridge 5 is avoided to destroy in vibration processes.

In the present embodiment, the outer gear ring 11 of the planetary gear mechanism 6 is connected to the damping by universal driving device Wheel 3；The universal driving device includes transmission shaft, and the both ends of the drive shaft passes through candan universal joint connection planetary gear respectively The outer gear ring 11 and damping wheel 3 of mechanism 6；Realize that damping wheel 3 still can during moving up and down using universal driving device Power is transferred to planetary gear mechanism 6.

In the present embodiment, piston cylinder is equipped on the pedestal 1 in the horizontal direction, the piston cylinder is interior with the circumferential direction that slides axially Fixed mode is equipped with piston 17, and the cross section of piston 17 and piston cylinder can be ellipse, and guarantee is circumferentially fixed therebetween, The driven friction disk 18 is set to 17 top surface of piston, and the spring I16 bullet peaks between piston 17 and piston cylinder bottom.

Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting,

Although describing the invention in detail referring to preferred embodiment, those skilled in the art should be managed Solution, can with modification or equivalent replacement of the technical solution of the present invention are made, without departing from technical solution of the present invention objective and Range is intended to be within the scope of the claims of the invention.

Claims

1. A bridge damping bearing is characterized in that: it comprises a base, a plurality of damping wheels jointly supported on the base by a damping spring and a damper, supported by a plurality of the damping wheels and combined with the damper. A support plate for wheel rolling fit, a planetary gear mechanism for accelerating the rotation of the damping wheel, and a rotary damper for applying a damping effect to the rotation of the damping wheel, the outer ring gear of the planetary gear mechanism is drivingly connected to the In the damping wheel, the planet carrier of the planetary gear mechanism is connected with the base in a clutchable manner; the rotary damper includes an active friction disc drivingly connected with the sun gear of the planetary gear mechanism, and an axially sliding and circumferentially fixed friction disc. A driven friction disc arranged in a manner and matched with the driving friction disc and a spring I for pressing the driven friction disc towards the driving friction disc.

2 . The bridge damping bearing according to claim 1 , wherein the housing of the planetary gear mechanism is fixed on the base, the outer surface of the planet carrier is provided with a positioning groove, and the inner wall of the housing is provided with a positioning groove. 3 . A blind hole is provided, and a steel ball and a spring II for pressing the steel ball to the positioning groove are arranged in the blind hole.

3 . The bridge damping bearing according to claim 2 , wherein the outer ring gear of the planetary gear mechanism is connected to the damping wheel through a universal transmission device. 4 .

4 . The bridge shock-absorbing support according to claim 3 , wherein a piston cylinder is arranged on the base along a horizontal direction, and a piston is arranged in the piston cylinder in a manner of axial sliding and circumferential fixing, 4 . The driven friction disc is arranged on the top surface of the piston, and the spring I is placed between the piston and the bottom of the piston cylinder.