CN109577181B

CN109577181B - Damping support for bridge

Info

Publication number: CN109577181B
Application number: CN201811572507.9A
Authority: CN
Inventors: 李钧; 沈义; 刘仁涛; 邹永超; 李丽
Original assignee: Heilongjiang College of Construction
Current assignee: Zhu Mingxi
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2021-01-01
Anticipated expiration: 2038-12-21
Also published as: CN109577181A

Abstract

A damping support for a bridge relates to a bridge support. The base upper surface is equipped with the spout and both ends are equipped with the baffle, the perforation has been seted up to the baffle, the concave mounting groove that is equipped with of baffle up end, roof sliding connection is in the spout middle section, damping device includes planetary gear mechanism, damping shell and screw lever, damping shell and mounting groove fixed connection, planetary gear mechanism is coaxial to be set up in the damping shell, the planet wheel passes through the location axle to be fixed between two plectanes of damping shell, it has viscous liquid to fill between the outer loop of ring gear and damping shell, plectane internal surface embedding is fixed with the sealing washer, the centre bore system of sun gear is the screw hole, the plectane center is equipped with the through-hole, screw lever middle section and screw hole screw. The energy-consuming device has extremely strong energy-consuming capacity of horizontal load, can adapt to larger horizontal displacement, and improves the effectiveness of the structure.

Description

Damping support for bridge

Technical Field

The invention relates to a bridge support, in particular to a damping support for a bridge.

Background

In order to avoid great damage to the bridge caused by external forces such as earthquake disasters, the bridge needs to take earthquake-proof measures during construction, and the traditional mode of improving the earthquake-proof capacity by relying on a reinforced structure is proved to be difficult to play a good earthquake-proof role through a plurality of facts, even the earthquake effect can be enlarged, the traditional mode is gradually eliminated, at present, a damping support capable of dissipating energy and absorbing shock is usually arranged between a beam body and a pier, and the damage of earthquake force to the structure is reduced through an energy-dissipating and shock-absorbing technology.

However, in the current bridge technical field, the damping support which is widely applied has low energy consumption capability to the horizontal load, and when the horizontal displacement is large, the damping support can be seriously damaged, so that the capability of the damping support is invalid. Therefore, a need exists for a damping support for a bridge, which can effectively consume energy for a horizontal load and ensure that the damping support is still effective under a large horizontal displacement condition.

Disclosure of Invention

In order to overcome the defects in the background art, the invention provides the damping support for the bridge, which has extremely strong energy consumption capacity of horizontal load, can adapt to larger horizontal displacement and improves the effectiveness of the structure.

The invention adopts the following technical scheme: a damping support for a bridge comprises a base, a top plate and two damping devices, wherein a sliding groove is formed in the upper surface of the base, baffles are arranged at two ends of the sliding groove respectively, a through hole is formed in the middle of the surface of each baffle, a mounting groove is concavely formed in the upper end surface of each baffle, the lower part of the top plate is connected to the middle section of the sliding groove in a sliding mode through a sliding block, the two damping devices are mounted in the two mounting grooves respectively, each damping device comprises a planetary gear mechanism, a damping shell and a screw rod, the damping shell is fixedly connected with the mounting groove and comprises an outer ring and two circular plates, the two circular plates are coaxially fixed at two ends of the outer ring, the planetary gear mechanism is coaxially arranged in the damping shell, a planetary wheel of the planetary gear mechanism is fixed between the two circular plates through a positioning shaft, a filling gap is reserved between a, the inner surfaces of the two circular plates and the corresponding positions of the filling gaps are respectively embedded and fixed with a sealing ring, a central hole of a sun gear of the planetary gear mechanism is made into a threaded hole, through holes are respectively arranged at the centers of the two circular plates, the middle section of each screw lever respectively penetrates through the corresponding through hole and the through hole to be in threaded fit with the threaded hole, and the inner side ends of the two screw levers are respectively connected with the top plate for fixing.

Compared with the prior art, the invention has the beneficial effects that: the damping device is reasonable in structure, easy to manufacture and efficient in performance, the top plate is connected to the middle section of the sliding groove of the base in a sliding mode, the damping devices consisting of the planetary gear mechanism, the damping shell and the wire lever are arranged on two sides of the top plate in the sliding direction, linear motion is converted into rotary motion, damping force is generated by shear impedance of viscous liquid, different damping force effects can be achieved by controlling the transmission ratio between the wire lever and the planetary gear mechanism, the damping device has extremely strong energy consumption capacity of horizontal load, and can adapt to large horizontal displacement, and the effectiveness of the structure is improved.

Drawings

FIG. 1 is an isometric view of the overall construction of a damping mount for a bridge of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a side view of FIG. 1;

FIG. 5 is an isometric view of an assembled structure of the base and top plate of the present invention;

FIG. 6 is a perspective view of the damping housing of the present invention in a disassembled configuration;

FIG. 7 is an enlarged view of portion A of FIG. 6;

fig. 8 is an enlarged view of a portion B of fig. 6.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

The first embodiment is as follows: as shown in figures 1-8, the invention discloses a damping support for a bridge, which comprises a base 1, a top plate 2 and two damping devices, wherein a sliding groove 1-1 is arranged on the upper surface of the base 1 along the length direction, two ends of the sliding groove 1-1 are respectively vertically provided with a baffle plate 1-2, the base 1 and the two baffle plates 1-2 are in a U shape and are manufactured into a whole, the middle positions of the plate surfaces of the two baffle plates 1-2 are respectively and correspondingly provided with a through hole 1-3, the middle parts of the upper end surfaces of the two baffle plates 1-2 are respectively provided with a mounting groove 1-4 along the width direction in a concave manner, the top plate 2 is horizontally arranged above the base 1, a sliding block 2-2 is integrally connected below the top plate 2 through a vertical plate 2-1, the sliding block 2-2 is slidably connected to the middle section of the sliding groove 1-, the sliding block 2-2 is matched with the sliding groove 1-1 to ensure that the sliding block cannot be separated when sliding, reinforcing ribs 2-3 can be respectively arranged on two sides of the vertical plate 2-1 between the top plate 2 and the sliding block 2-2 to enhance stability, the two damping devices are respectively arranged in the two mounting grooves 1-4, the top plate 2 is higher than the two baffles 1-2, the two damping devices do not contact with each other, each damping device comprises a planetary gear mechanism 3, a damping shell 4 and a screw rod 5, the damping shell 4 is fixedly connected with the mounting grooves 1-4, the damping shell 4 comprises an outer ring 4-1 and two circular plates 4-2, the two circular plates 4-2 are coaxially fixed at two ends of the outer ring 4-1, the planetary gear mechanism 3 is coaxially arranged in the damping shell 4, and the planetary gear mechanism 3 comprises a sun gear 3-1, a sun, The sun wheel comprises a gear ring 3-3 and a plurality of planet wheels 3-2, the plurality of planet wheels 3-2 are preferably three and meshed between a sun wheel 3-1 and the gear ring 3-3 at equal angles, the planet wheels 3-2 are fixed between corresponding positions of two circular plates 4-2 through a positioning shaft 3-4, a filling gap 8 is left between the gear ring 3-3 and an outer ring 4-1, viscous liquid is filled in the filling gap 8, sealing rings 6 are respectively embedded and fixed in the positions, corresponding to the filling gap 8, of the inner surfaces of the two circular plates 4-2, the two sealing rings 6 seal and seal the filling gap 8, a center hole of the sun wheel 3-1 is made into a threaded hole 3-5, through holes 4-3 are respectively arranged in the centers of the two circular plates 4-2, and the threaded hole 3-5, the through hole 4-3 and the through hole 1-3 are coaxially, the through holes 1-3 and the through holes 4-3 are larger than the threaded holes 3-5, the middle sections of the two screw levers 5 are respectively in threaded fit with the threaded holes 3-5 of the two sun wheels 3-1, and the inner side ends of the two screw levers 5 are respectively fixedly connected with the corresponding positions of the vertical plate 2-1.

The second embodiment is as follows: as shown in fig. 6, 7 and 8, in this embodiment, a first specific embodiment is further described, two end faces of the sun gear 3-1 are respectively disposed with a gap from the inner surface of the corresponding circular plate 4-2, two end faces of the sun gear 3-1 are respectively coaxially and concavely provided with a first annular groove 3-6, an inner surface of the circular plate 4-2 is coaxially and concavely provided with a second annular groove 4-4, the first annular groove 3-6 and the second annular groove 4-4 are oppositely matched, and a set of balls 7 is interposed between the first annular groove 3-6 and the second annular groove 4-4.

The third concrete implementation mode: as shown in fig. 2 and 5, the present embodiment is further described with respect to the first embodiment, each of the wire levers 5 has a length such that when the top plate 2 slides along the sliding slot 1-1 to both ends of the base 1, neither wire lever 5 is disengaged from the corresponding sun gear 3-1.

When the bridge is used, the bridge is arranged between a beam body and a bridge pier, a base 1 is fixed with the upper surface of the bridge pier, a top plate 2 is fixed with the lower surface of the beam body and is generally arranged longitudinally according to the bridge, and the principle is as follows: when the beam body is subjected to horizontal load to generate bridge longitudinal displacement, the top plate 2 fixed with the beam body generates relative motion between the sliding groove 1-1 and the base 1, the two screw levers 5 and the two planetary gear mechanisms 3 are mutually matched to convert linear motion into rotary motion, the viscous liquid has shear impedance to generate damping force, the damping force effect can be adjusted by controlling the transmission ratio between the screw levers 5 and the planetary gear mechanisms 3, the energy consumption capability of the horizontal load is extremely high, the horizontal load can adapt to large horizontal displacement, and the effectiveness of the structure is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a damping support for bridge which characterized in that: the damping device comprises a base (1), a top plate (2) and two damping devices, wherein a sliding groove (1-1) is formed in the upper surface of the base (1), baffles (1-2) are arranged at two ends of the sliding groove (1-1) respectively, a through hole (1-3) is formed in the middle position of the surface of each baffle (1-2), an installation groove (1-4) is concavely formed in the upper end surface of each baffle (1-2), the lower part of the top plate (2) is connected to the middle section of the sliding groove (1-1) in a sliding mode through a sliding block (2-2), the two damping devices are installed in the two installation grooves (1-4) respectively, each damping device comprises a planetary gear mechanism (3), a damping shell (4) and a screw lever (5), the damping shell (4) is fixedly connected with the installation grooves (1-4), and each damping shell (4) comprises an outer ring (4-1), the two circular plates (4-2) are coaxially fixed at two ends of the outer ring (4-1), the planetary gear mechanism (3) is coaxially arranged in the damping shell (4), a planetary gear (3-2) of the planetary gear mechanism (3) is fixed between the two circular plates (4-2) through a positioning shaft (3-4), a filling gap (8) is reserved between a gear ring (3-3) of the planetary gear mechanism (3) and the outer ring (4-1), the filling gap (8) is filled with viscous liquid, sealing rings (6) are respectively embedded and fixed at positions of the inner surfaces of the two circular plates (4-2) corresponding to the filling gap (8), a central hole of a sun gear (3-1) of the planetary gear mechanism (3) is made into a threaded hole (3-5), and through holes (4-3) are respectively arranged at the centers of the two circular plates (4-2), the middle section of each screw lever (5) respectively penetrates through the corresponding through hole (1-3) and the through hole (4-3) to be in threaded fit with the threaded hole (3-5), and the inner side ends of the two screw levers (5) are respectively connected with the top plate (2) to be fixed.

2. The damping support for the bridge according to claim 1, wherein: two end faces of the sun wheel (3-1) are respectively arranged in a clearance mode with the inner surfaces of the corresponding circular plates (4-2), annular grooves I (3-6) are coaxially and concavely formed in the two end faces of the sun wheel (3-1), annular grooves II (4-4) are coaxially and concavely formed in the inner surfaces of the circular plates (4-2), the annular grooves I (3-6) are in opposite fit with the annular grooves II (4-4), and a group of balls (7) are clamped between the annular grooves I (3-6) and the annular grooves II (4-4).

3. The damping support for the bridge according to claim 1, wherein: the length of each wire lever (5) is such that when the top plate (2) slides to the two ends of the base (1) along the sliding groove (1-1), the two wire levers (5) are not separated from the corresponding sun wheel (3-1).