CN219450411U - Passive vibration damper for cableway bridge - Google Patents

Abstract

The utility model discloses a passive vibration damper for a cableway bridge, which comprises a box body, wherein a first limiting plate is attached to the back surface of a bent plate, a second limiting plate is fixedly connected to the bottom of the first limiting plate through two damping springs, a mass block is movably connected to the outer wall of the second limiting plate, a round block is rotatably connected to the front surface of the mass block through a pin shaft, a plurality of baffles are fixedly connected to the outer side of the round block, and second bolts are connected to the inner sides of the baffles through threads. The utility model relates to the technical field of cableway bridge vibration reduction, and aims to realize quick replacement of a plurality of damping springs through cooperation among round blocks, second bolts and baffles, and solve the problems that the elastic limit of the existing damping springs is damaged after long-time use, the stiffness coefficient of the springs is changed, the subsequent replacement of the plurality of springs is troublesome, and the operation time is prolonged.

Description

Passive vibration damper for cableway bridge

Technical Field

The utility model relates to the technical field of vibration reduction of cableway bridges, in particular to a passive vibration reduction damper for a cableway bridge.

Background

The cableway bridge is used as a bridge form, and has wide application in the aspects of temporary construction of temporary bridges, simple bridges in mountain areas and the like. The cableway bridge consists of main rope, anchoring rope, balance rope, wind cable, steel beam and bridge deck system, and is flexible structure with long self-vibration period. When the wind vibration frequency is close to the natural frequency of the cableway bridge, the cableway bridge resonates, so that the use of the cableway bridge is seriously influenced, and the safety of the cableway bridge is even endangered.

Cableway bridges generally limit the displacement of the cableway bridge under the action of wind load by means of wind cables. The method does not consider the vibration of the integral structure including the wind cable under wind vibration, the vertical displacement of the wind cable under wind vibration load of a cableway bridge is limited less, the existing damper is composed of a box body, a mass block and a damping spring, one end of the damping spring is directly fixed on the box body, the other end of the damping spring is connected and fixed on the mass block, and connecting lines of the damping spring are crossed and perpendicular. The box may be cast, rolled or welded from sheet metal. The box of square, damping spring is the symmetry setting, simple to operate, and damping effect is good, adopts welding or fixed a plurality of bolt's mode to fix damping spring in the inboard of box now, and the quantity is four generally.

However, the existing damping springs can cause damage to the elastic limit after long-time use, the stiffness coefficient of the springs can be changed, the subsequent replacement of a plurality of springs is troublesome, and the operation time is prolonged.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a passive vibration damper for a cableway bridge, which solves the problems that the elastic limit is damaged after the conventional damping spring is used for a long time, the stiffness coefficient of the spring is changed, the subsequent replacement of a plurality of springs is troublesome, and the operation time is prolonged.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the utility model provides a passive vibration damper for on cableway bridge, includes the box, the inboard of box is provided with stop gear, and stop gear includes bent plate, first bolt, first limiting plate, damping spring, second limiting plate, quality piece, kicker, second bolt and baffle, the back of bent plate passes through the front fixed connection of first bolt and box, the laminating of the back of bent plate has first limiting plate, the bottom of first limiting plate has the second limiting plate through two damping spring rigid couplings, the outer wall activity of second limiting plate is connected with the quality piece, the front of quality piece is connected with the kicker through the round pin axle rotation, the outside rigid coupling of kicker has a plurality of baffles, and a plurality of the inboard of baffle is equal the screw thread and is connected with the second bolt.

Preferably, two rib plates are arranged on two sides of the box body.

Preferably, a cylinder is fixedly connected at the rear of the inner side of the box body, a positioning rod is fixedly connected at the front of the cylinder, a protection frame is movably connected with the outer wall of the positioning rod, and the back of the protection frame is attached to the front of the cylinder.

Preferably, the front of the protection frame is attached with a transverse plate, and the back of the transverse plate is fixedly connected with the rear of the inner side of the box body through a screw.

Preferably, the bottom of the box body is attached with a cross beam, the top of the cross beam is fixedly connected with a plurality of positioning blocks, the inner sides of the positioning blocks are attached to the outer side of the box body, and the inner sides of the positioning blocks are fixedly connected with the outer side of the box body through third bolts.

Advantageous effects

The utility model provides a passive vibration damper used on a cableway bridge. The beneficial effects are as follows: this a passive damping attenuator for on cableway bridge has realized the quick replacement to a plurality of damping springs through the cooperation between kicker, second bolt and the baffle, has solved current damping spring and can cause the elastic limit to receive the destruction after long-time use, and the stiffness coefficient of spring will change, and is comparatively troublesome when later changing a plurality of springs, has prolonged operating time's problem.

Through the cooperation between damping spring, second limiting plate and the fender bracket, realized the protection to damping spring, avoided receiving external impact to cause the damage, prolonged the life of attenuator.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the present utility model;

FIG. 3 is a schematic view of the damping spring, second limiting plate and protective frame of FIG. 1;

fig. 4 is a schematic structural view of the third bolt, the cross beam and the positioning block.

In the figure: 1. the box body, 2, first limiting plate, 3, damping spring, 4, second limiting plate, 5, the mass piece, 6, the button, 7, second bolt, 8, baffle, 9, bent plate, 10, first bolt, 11, the floor, 12, third bolt, 13, diaphragm, 14, cylinder, 15, locating lever, 16, fender bracket, 17, crossbeam, 18, locating piece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The existing damping spring can cause the damage of the elastic limit after long-time use, the stiffness coefficient of the spring can be changed, the subsequent replacement of a plurality of springs is more troublesome, and the operation time is prolonged.

In view of the above, the passive vibration damper for the cableway bridge is provided, and through the cooperation among the round block, the second bolt and the baffle, the quick replacement of a plurality of damping springs is realized, and the problems that the elastic limit is damaged, the stiffness coefficient of the springs is changed, the following replacement of a plurality of springs is troublesome, and the operation time is prolonged after the conventional damping springs are used for a long time are solved.

The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.

Embodiment one: as can be seen from fig. 1-3, a passive vibration damper for a cableway bridge comprises a box body 1, wherein a limiting mechanism is arranged on the inner side of the box body 1, the limiting mechanism comprises a bent plate 9, a first bolt 10, a first limiting plate 2, a damping spring 3, a second limiting plate 4, a mass block 5, a round block 6, a second bolt 7 and a baffle 8, the back surface of the bent plate 9 is fixedly connected with the front surface of the box body 1 through the first bolt 10, the back surface of the bent plate 9 is attached with the first limiting plate 2, the bottom of the first limiting plate 2 is fixedly connected with the second limiting plate 4 through two damping springs 3, the outer wall of the second limiting plate 4 is movably connected with a mass block 5, the second limiting plate 4 can move on the inner side of the mass block 5, the front surface of the mass block 5 is rotatably connected with the round block 6 through a pin shaft, the outer side of the round block 6 is fixedly connected with a plurality of baffle plates 8, the inner sides of the baffle plates 8 are respectively connected with the second bolts 7 through threads, the baffle 8 can be fixed on the front surface of the mass block 5, the mass block 5 is correspondingly provided with a plurality of screw holes, and the four screw holes are uniformly distributed on the box body 1;

in the specific implementation process, it is worth particularly pointing out that the baffle plate 8 can be fixed on the front surface of the mass block 5 by the second bolt 7, corresponding threaded holes are formed in the mass block 5, and the round block 6, the second bolt 7 and the baffle plate 8 are matched, so that the quick replacement of the damping springs 3 is realized, the problem that the elastic limit of the existing damping springs 3 is damaged after long-time use, the stiffness coefficient of the springs is changed, the subsequent replacement of the springs is troublesome, and the operation time is prolonged is solved;

further, two rib plates 11 are arranged on two sides of the box body 1;

in the specific implementation, it is worth particularly pointing out that the rib 11 increases the strength of the tank 1;

specifically, when the passive vibration damper for the cableway bridge is used, a user can take down the first bolt 10 and detach the bent plate 9, then take down the second bolt 7 and rotate the round block 6 to drive the baffle plate 8 to be separated from the front face of the second limiting plate 4, and then take out a plurality of groups of the first limiting plate 3, the second limiting plate 4 and the damping spring 3 from the front face for replacement.

Embodiment two: as can be seen from fig. 1 to 4, a cylinder 14 is fixedly connected to the rear inside of the case 1, a positioning rod 15 is fixedly connected to the front surface of the cylinder 14, a protection frame 16 is movably connected to the outer wall of the positioning rod 15, the protection frame 16 can protect the damping spring 3, the protection frame 16 and the cylinder 14 do not influence the normal movement of the mass block 5, and the back surface of the protection frame 16 is attached to the front surface of the cylinder 14;

in the specific implementation process, it is worth particularly pointing out that the protection frame 16 and the cylinder 14 do not influence the normal movement of the mass block 5, and the damping spring 3, the second limiting plate 4 and the protection frame 16 are matched, so that the damping spring is protected, the damage caused by external impact is avoided, and the service life of the damper is prolonged;

further, a transverse plate 13 is attached to the front surface of the protection frame 16, and the back surface of the transverse plate 13 is fixedly connected with the rear inside of the box body 1 through screws;

in the specific implementation process, it should be noted that the transverse plate 13 may be fixed on the case 1 to limit the protection frame 16;

further, the bottom of the box body 1 is attached with a cross beam 17, the top of the cross beam 17 is fixedly connected with a plurality of positioning blocks 18, the inner sides of the positioning blocks 18 are attached to the outer side of the box body 1, the inner sides of the positioning blocks 18 are fixedly connected with the outer side of the box body 1 through third bolts 12, and the positioning blocks 18 can limit the box body 1;

in the specific implementation process, it should be noted that the user may position the case 1 inside the positioning blocks 18, and then rotate the third bolt 12 to fix the case;

specifically, on the basis of the first embodiment, the user can put the protection frame 16 in alignment with the positioning rod 15 so as to be attached to the cylinder 14, and then fix the cross plate 13 to the case 1 by using the screw, and attach to the protection frame 16 for limiting.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A passive vibration damper for a cableway bridge, comprising a box (1), characterized in that: a limiting mechanism is arranged on the inner side of the box body (1);

the limiting mechanism comprises a bending plate (9), a first bolt (10), a first limiting plate (2), a damping spring (3), a second limiting plate (4), a mass block (5), a round block (6), a second bolt (7) and a baffle plate (8);

the back of bent plate (9) is through the positive fixed connection of first bolt (10) with box (1), the laminating of the back of bent plate (9) has first limiting plate (2), the bottom of first limiting plate (2) is through two damping spring (3) rigid couplings have second limiting plate (4), the outer wall activity of second limiting plate (4) links to each other has quality piece (5), the front of quality piece (5) is rotated through the round pin axle and is linked to each other has button (6), the outside rigid coupling of button (6) has a plurality of baffles (8), a plurality of the inboard equal screw thread of baffle (8) links to each other has second bolt (7).

2. A passive vibration damper for use on a cableway bridge according to claim 1, characterized in that: two rib plates (11) are arranged on two sides of the box body (1).

3. A passive vibration damper for use on a cableway bridge according to claim 1, characterized in that: the novel box is characterized in that a cylinder (14) is fixedly connected to the rear of the inner side of the box body (1), a positioning rod (15) is fixedly connected to the front of the cylinder (14), a protection frame (16) is movably connected to the outer wall of the positioning rod (15), and the back of the protection frame (16) is attached to the front of the cylinder (14).

4. A passive vibration damper for use on a cableway bridge according to claim 3, characterized in that: the front of the protection frame (16) is attached with a transverse plate (13), and the back of the transverse plate (13) is fixedly connected with the rear of the inner side of the box body (1) through screws.

5. A passive vibration damper for use on a cableway bridge according to claim 1, characterized in that: the bottom laminating of box (1) has crossbeam (17), the top rigid coupling of crossbeam (17) has a plurality of locating pieces (18), and a plurality of the inboard of locating piece (18) is laminated with the outside of box (1), a plurality of the inboard of locating piece (18) is all through the outside fixed connection of third bolt (12) with box (1).