CN216382393U

CN216382393U - Shock absorber for external cable

Info

Publication number: CN216382393U
Application number: CN202122225336.6U
Authority: CN
Inventors: 陈芳; 陈伟; 段婷; 李东洋; 斯毅; 胡瑞; 李耀业
Original assignee: Xinjiang Jiaojian Highway Planning Survey And Design Co ltd; Xinjiang Communications Construction Group Co ltd
Current assignee: Xinjiang Jiaojian Highway Planning Survey And Design Co ltd; Xinjiang Communications Construction Group Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-04-26
Anticipated expiration: 2031-09-10

Abstract

The utility model provides a shock absorber for an external cable, which comprises an installation frame body and a shock absorber body; the one end of installation support body is equipped with mounting structure, and this mounting structure has the mounting hole, installs in this mounting hole the bumper shock absorber body, the other end of installation support body is used for linking to each other with the steel box girder. The external cable body is arranged in the through hole in a penetrating mode and is firstly contacted with the two damping components, so that the vibration interval of the external cable body is shortened, the damping effect is achieved, the two damping components are enabled to tightly press the external cable body through buckling of the first hoop clamp and the second hoop clamp, and the axial movement of the external cable body is prevented.

Description

Shock absorber for external cable

Technical Field

The utility model relates to the technical field of bridge reinforcement, in particular to a shock absorber for an external cable.

Background

With the continuous development of highway traffic industry in China, the construction scale and the construction quantity of bridges are continuously increased. In the construction process of bridge engineering, the steel-concrete composite beam is often used as a overpass bridge in engineering projects, and the application of the prestress external cable technology to the steel-concrete composite beam can obviously improve the bearing capacity of the bridge, obviously improve the stress performance of the bridge structure and simultaneously improve the safety and comfort level of vehicle passing.

However, various factors such as vehicle passing can cause the structure and the external cable body to vibrate, and if the self-vibration frequency of the cable body is close to the vibration frequency of the whole structure, the common vibration is caused, so that potential safety hazards are brought to the whole structure.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a shock absorber for an external cable, which comprises an installation frame body and a shock absorber body; the one end of installation support body is equipped with mounting structure, and this mounting structure has the mounting hole, installs in this mounting hole the bumper shock absorber body, the other end of installation support body is used for linking to each other with the steel box girder.

Preferably, the mounting structure comprises a first hoop clamp and a second hoop clamp which are connected in a folding mode, two ends of the first hoop clamp are connected with two ends of the second hoop clamp through screws, and two ends of each screw are connected with the first hoop clamp and the second hoop clamp in a fastening mode through nuts.

Preferably, one end of the screw rod, which is far away from the first pinch clamp and the second pinch clamp, is connected with the connecting steel plate.

Preferably, the shock absorber body is arranged in a mounting cavity enclosed between the first pinch clamp and the second pinch clamp; the shock absorber body comprises a shock absorption component which is respectively connected and arranged on the inner wall of the mounting cavity corresponding to the first hoop clamp and the second hoop clamp, and a through hole for the external cable body to pass through is enclosed between the two shock absorption components.

As optimization, a limiting groove is formed in the surface of the damping member, which is connected with the first pinch clamp or the second pinch clamp, and a limiting boss which is installed in a matched manner with the limiting groove is arranged at the corresponding position of the inner wall of the installation cavity corresponding to the first pinch clamp and the second pinch clamp; and the inner wall surface of the through hole is provided with damping ribs which are uniformly distributed along the circumferential direction of the through hole.

Preferably, the damping member is made of a rubber of a half-shell type.

Compared with the prior art, the utility model has the beneficial effects that:

1. the external cable body is arranged in the through hole in a penetrating way and is firstly contacted with the two damping components, so that the vibration interval of the external cable body is shortened, and the two damping components are tightly pressed by the external cable body through buckling of the first hoop clamp and the second hoop clamp, so that the axial movement of the external cable body is avoided;

2. the installation and fixation of the damping component are realized by the matching installation of the limiting groove and the limiting boss, and the vibration of the external cable body can be further limited;

3. the shock absorption ribs can effectively reduce the contact area of the external cable body matched with the shock absorption component, and reduce the transmission of shock;

4. the haversian rubber material not only can realize the damping effect, but also can well absorb the noise generated by the friction between the cable body outside the body and the hoop clamp.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is an axial structural view of the damper for an extra-corporeal cable according to the present invention;

fig. 2 is a side view schematically showing the structure of the shock absorber for an extra-corporeal cable according to the present invention.

Reference numerals:

1-mounting a frame body, 11-mounting structure, 111-first hoop clamp, 112-second hoop clamp and 12-limiting boss;

2-a damper body, 21-a damping component, 22-a limiting groove and 23-a damping ridge;

3-screw, 4-nut, 5-connecting steel plate, 6-steel box girder and 7-external cable body.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Example (b): as shown in fig. 1 to 2, the utility model discloses a shock absorber for an external cable, which comprises a mounting frame body 1 and a shock absorber body 2. The one end of installation support body 1 is equipped with mounting structure 11, and this mounting structure has a mounting hole, and this mounting hole is interior to be installed bumper shock absorber body 2, the other end of installation support body 1 is used for linking to each other with steel box girder 6.

In practice, the shock absorbers should be positioned at the front 1/4 of the beam section length. In the present application, the anchoring position of the extra-corporeal cable body is defined as the leading end.

Specifically, the mounting structure 11 includes a first pinch clamp 111 and a second pinch clamp 112 connected in a folded manner, two ends of the first pinch clamp 111 and two ends of the second pinch clamp 112 are connected by a screw 3, and two ends of the screw 3 are both fastened to the first pinch clamp 111 and the second pinch clamp 112 by nuts 4.

Therefore, the buckling metal body outer cable body of the first hoop clamp and the second hoop clamp is used for avoiding axial movement.

Specifically, the end of the screw rod 3 remote from the first pinch clamp 111 and the second pinch clamp 112 is connected to the connecting steel plate 5.

In implementation, the connecting steel plate 5 is preset on the beam of the steel box beam 6, and then the screw 3 is welded on the connecting steel plate 5.

Specifically, the damper body 2 is disposed in a mounting cavity enclosed between the first band clamp 111 and the second band clamp 112. The damper body 2 includes a damping member 21 respectively connected to the inner walls of the mounting cavities corresponding to the first and

second clamps

111 and 112, and a through hole for passing the cable body 7 is defined between the two damping members 21.

Thus, the external cable body is inserted into the through hole and is firstly contacted with the two damping components, so that the vibration interval of the external cable body is shortened, and the damping effect is realized.

Specifically, a limiting groove 22 is formed on a surface of the shock-absorbing member 21 connecting the first band clamp 111 or the second band clamp 112, and a limiting boss 12 installed in cooperation with the limiting groove 22 is arranged on a corresponding position of the inner wall of the installation cavity corresponding to the first band clamp 111 and the second band clamp 112.

Therefore, the installation and the fixation of the damping component are realized together by the matching installation of the limiting groove and the limiting boss, and the vibration of the external cable body can be further limited.

Specifically, the inner wall surface of the through hole is provided with damping ribs 23 which are uniformly distributed along the circumferential direction of the through hole.

Therefore, the shock absorption edge can effectively reduce the contact area of the external cable body and the shock absorption component, and the transmission of shock is reduced.

During implementation, the matching relation between the external cable body and the shock absorber can be changed by adjusting the number, the height and the width of the shock absorption ribs, so that different shock absorption effects are realized.

Specifically, the shock absorbing member 21 is a member made of a hayfever rubber.

Therefore, the half-type rubber material not only can realize the damping effect, but also can well absorb the noise generated by the friction between the cable body and the hoop clamp due to the vibration of the external cable body.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention is described in detail with reference to the following embodiments, it should be understood by those skilled in the art that: the technical solutions described in the following embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A shock absorber for an external cable is characterized by comprising an installation frame body and a shock absorber body; one end of the mounting frame body is provided with a mounting structure, the mounting structure is provided with a mounting hole, the shock absorber body is mounted in the mounting hole, and the other end of the mounting frame body is used for being connected with a steel box girder; the mounting structure comprises a first hoop clamp and a second hoop clamp which are connected in a closing mode, the two ends of the first hoop clamp and the two ends of the second hoop clamp are connected through screws, and the two ends of each screw are connected with the first hoop clamp and the second hoop clamp in a fastening mode through nuts.

2. The shock absorber for the extra-corporeal cable according to claim 1, wherein an end of the screw rod remote from the first pinch clamp and the second pinch clamp is connected to the connection steel plate.

3. The shock absorber for the extra-corporeal cable according to claim 1, wherein the shock absorber body is disposed in a mounting cavity enclosed between the first band clamp and the second band clamp; the shock absorber body comprises a shock absorption component which is respectively connected and arranged on the inner wall of the mounting cavity corresponding to the first hoop clamp and the second hoop clamp, and a through hole for the external cable body to pass through is enclosed between the two shock absorption components.

4. The shock absorber for the extra-corporeal cable according to claim 3, wherein a limiting groove is formed on a surface of the shock absorbing member connecting the first pinch clamp or the second pinch clamp, and a limiting boss which is fitted with the limiting groove is provided on a corresponding position of an inner wall of the mounting cavity corresponding to the first pinch clamp and the second pinch clamp; and the inner wall surface of the through hole is provided with damping ribs which are uniformly distributed along the circumferential direction of the through hole.