CN221240102U - Bridge cable telescoping device - Google Patents

Abstract

The utility model discloses a bridge cable telescopic device which comprises a bracket, wherein the first end of the bracket is fixedly arranged on a first bridge body, and the second end of the bracket is movably arranged on a second bridge body; the longitudinal section of the bracket is crescent, the bracket comprises an outer arc body and an inner arc body, the first end of the outer arc body is connected with the first end of the inner arc body, and the second end of the outer arc body is connected with the second end of the inner arc body; the bridge is characterized by further comprising a guide limit groove arranged on the side wall of the bridge, wherein a plurality of connecting sliding blocks are arranged on the outer arc body at intervals, and the connecting sliding blocks can be slidably arranged in the guide limit groove; the upper end of the outer arc body is provided with a clamp assembly for installing a bridge cable. The device is applicable to large-section cables and lays in bridge and similar civil construction structures that are equipped with the expansion joint, and adaptable civil construction structures such as bridge warp flexible volume change and arouses the circumstances that the cable takes place to warp, and the device flexible, simple structure, applicable bridge that the expansion joint is less and the limited laying environment in laying space.

Description

Bridge cable telescoping device

Technical Field

The utility model relates to the technical field of cable expansion compensation, in particular to a bridge cable expansion device.

Background

The construction of cross-river and cross-sea bridges is increasingly frequent, and power transmission projects for synchronously laying large-section cables along the bridge are generated. Due to the external condition changes such as strong wind, earthquake, vehicle passing, large change of ambient temperature and the like, the carriage beam of the bridge can stretch and deform, so that the cable laid on the bridge also stretches and deforms. If the expansion and contraction amount of the cable is not absorbed and compensated, the cable can bear extra stress, and the cable outer sheath, the insulating layer and the conductor can be broken and discharged in severe cases, so that the safe operation of a cable line is affected. Therefore, in engineering design, the corresponding compensation of the expansion and contraction amount of the cable according to the deformation of the bridge is required to be considered, so that the safe operation of the cable is ensured.

The current domestic bridge-following cable generally adopts an OFFSET device aiming at larger expansion compensation quantity, and as shown in fig. 1, the OFFSET device generally comprises a cable frame 1, a sliding cable frame 3, a bevel mechanism 4, a cable bracket 6, a cable bracket 7, a connecting rod mechanism 8, a differential mechanism 9 and a basic sliding seat 10.

The typical truss structure OFFSET adopts the telescopic change of a multipoint fitting cable, mainly realizes the telescopic change of a truss main body through a connecting rod system, and realizes the local uncertain movement change of the cable through a plane sliding block.

In the working process, when the movable bridge deck contracts, the cable frame 1 fixed on the movable bridge deck contracts along with the bridge deck, and simultaneously, the angle folding mechanism 4 is pulled to move right. Since the angle mechanism 4 is rigid when pulled and pressed, it drags the sliding cable frame 3 mounted on the adjacent fixed deck. By equally dividing the link mechanism 8, the sliding cable frame 3 pulls the cable carriage 6 fixed to the arc-shaped cable 2 to move. When the movable bridge deck contracts, the bending radius of the arc-shaped cable 2 is increased, the arc chord is lengthened, and the elongation is equal to the contraction of the movable bridge deck. When the movable bridge deck stretches, the bending radius of the arc-shaped cable 2 is reduced, the arc chord is shortened, and the retraction amount is equal to the stretching amount of the movable bridge deck. When any bridge deck is bent, the angle folding mechanism 4 rotates up and down, the bending force disappears, and the bending force cannot be transmitted to the cable frames 1 at the two ends. When any bridge deck is bent, the angle folding mechanism 4 rotates up and down, the bending force disappears, and the bending force cannot be transmitted to the cable frames 1 at the two ends.

When the two bridge ends are misplaced, the angle folding mechanism 4 moves horizontally, and the bending force is not transmitted to the cable frames 1 at the two ends. In the whole process, bridge deck deformation force acts on a plurality of specific points of the cable arcs in a uniformly dispersed manner through the cable frame 1, the link mechanism 8 and the like. The cable arc section is hardly subjected to tensile force and extrusion force. The cable is only subjected to limited, uniform and controlled bending deformation.

The telescopic compensation device in the related art has the advantages of complex mechanical structure, complex installation, large size, high requirement on the height of the installation space of the bridge, high difficulty in cable construction and laying, high price and difficult operation and maintenance rush repair, and in addition, the device is generally not suitable for small-sized bridges and is not suitable for space narrow places.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a bridge cable expansion device.

The technical scheme adopted for solving the technical problems is as follows: constructing a bridge cable expansion device which is used for being installed on a bridge, wherein the bridge comprises a first bridge body and a second bridge body, and an expansion joint is arranged between the first bridge body and the second bridge body; the bridge cable expansion device comprises a bracket, wherein the first end of the bracket is fixedly arranged on a first bridge body, and the second end of the bracket is movably arranged on a second bridge body;

The longitudinal section of the support is crescent, the support comprises an outer arc body and an inner arc body, the first end of the outer arc body is connected with the first end of the inner arc body, and the second end of the outer arc body is connected with the second end of the inner arc body;

The bridge cable expansion device further comprises a plurality of guide limit grooves arranged on the side wall of the bridge, a plurality of connecting sliding blocks are arranged on the outer arc body at intervals, and the connecting sliding blocks can be slidably arranged in the guide limit grooves;

the upper end of the outer arc body is provided with a clamp assembly for installing a bridge cable.

In some embodiments, the bridge cable retractor device comprises a chute portion provided on the second bridge body;

The second end of the bracket is provided with a sliding part, and the sliding part can be slidably arranged in the sliding groove part.

In some embodiments, the slider comprises a pulley or a spool.

In some embodiments, the bridge cable expansion apparatus further comprises a plurality of support rods, the first ends of which are mounted on the first bridge body and/or the second bridge body;

The support rod is provided with a first through groove and a second through groove, the first through groove and the second through groove are arranged at intervals along the length direction of the support rod, the first through groove is used for enabling the inner arc body to penetrate through the first through groove, and the second through groove is used for enabling the outer arc body to penetrate through the second through groove.

In some embodiments, the number of support rods is at least three.

In some embodiments, the support bar is made of stainless steel material.

In some embodiments, the clamp assembly includes a first half-ring and a second half-ring;

the first half ring body is connected with the outer arc body, a first connecting part is arranged at the first end of the first half ring body, and a second connecting part is arranged at the second end of the first half ring body;

The first end of the second half ring body is provided with a first fixing part, and the second end of the second half ring body is provided with a second fixing part;

The first connecting part is connected with the first fixing part through a first fastener, and the second connecting part is connected with the second fixing part through a second fastener.

In some embodiments, the first fastener and the second fastener are bolts or screws.

In some embodiments, the clamp assembly further comprises a spacer sleeve sleeved around the bridge cable.

In some embodiments, the stent is a stainless steel stent.

The implementation of the utility model has the following beneficial effects: the bridge cable expansion device is suitable for large-section cables to be laid on bridges and similar civil structures with expansion joints, is used for adapting to the situation that the deformation and expansion amount change of the civil structures such as the bridges causes the cables to deform, has flexible expansion, simple structure, small volume and low cost, and is particularly suitable for bridges with small expansion joints and laying environments with limited laying space.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:

fig. 1 is a schematic structural view of an OFFSET device in the related art;

FIG. 2 is one of the schematic views of a bridge cable retractor device in some embodiments of the utility model;

FIG. 3 is a second schematic illustration of a bridge cable retractor device in accordance with some embodiments of the utility model;

FIG. 4 is a schematic view of the bracket of FIG. 3;

FIG. 5 is a detail view of the stent of FIG. 4;

FIG. 6 is a schematic view of the installation of a first end of a bracket in some embodiments of the utility model;

fig. 7 is a schematic view of a clamp assembly in some embodiments of the utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," 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; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.

Referring to fig. 2-7, the present utility model illustrates a bridge cable extension apparatus for installation on a bridge 100 (typically in a box girder), the bridge 100 generally comprising a gallery bottom 101, a gallery top 102, and side walls 103 (alternatively referred to as side beams 103) disposed on either side of the gallery bottom 101 and gallery top 102.

The gallery bottom 101 may include a first bridge body 1011 and a second bridge body 1012 with an expansion joint a between the first bridge body 1011 and the second bridge body 1012; in practice, the gallery floor 101 may include a plurality of first bridge bodies 1011 and a plurality of second bridge bodies 1012, also having a plurality of expansion joints A. The first bridge body 1011 and the second bridge body 1012 are illustrated for simplicity of description only.

The bridge cable expansion device is flexible in expansion, simple in structure and small in size, and can be used for bridges with small expansion joints and laying environments with limited laying space.

In some embodiments, the bridge cable retractor may include a bracket 10, a first end of the bracket 10 being fixedly mounted to a first bridge body 1011 and a second end of the bracket 10 being movably mounted to a second bridge body 1012, i.e., the bracket 10 spans the expansion joint a.

The longitudinal cross-section of the stent 10 is crescent-shaped, and in some embodiments, the stent 10 may be generally fan-shaped or arcuate.

Further, the bracket 10 may include an outer arc 11 and an inner arc 12, wherein a first end of the outer arc 11 is connected with a first end of the inner arc 12, a second end of the outer arc 11 is connected with a second end of the inner arc 12, and a hollow structure B is disposed between the outer arc 11 and the inner arc 12, so that the bracket 10 has a certain stretching deformation effect.

The bridge cable expansion device further comprises a plurality of guiding and limiting grooves 20 arranged on the side wall 103 of the bridge 100, wherein the guiding and limiting grooves 20 can extend along the arc-shaped interval of the outer arc body 11, and the limiting ranges of the guiding and limiting grooves 20 can be different, for example, the deformation range of the upper part of the outer arc body 11 can be larger than the deformation range of the two end parts of the outer arc body 11, so that the groove width and the groove length of the guiding and limiting grooves 20 corresponding to the upper part of the outer arc body 11 can be relatively large, the size can be selected according to actual conditions, and the specific limitation is not made here.

Further, a plurality of connecting sliding blocks 13 are arranged on the outer arc body 11 at intervals, and the connecting sliding blocks 13 can be slidably arranged in the corresponding guiding limit grooves 20.

The upper end of the outer arc 11 is provided with a clamp assembly 30 for installing the bridge cable 200.

In some embodiments, as shown in fig. 6, the bridge cable telescopic device may include a rotating shaft seat 60, and the first end of the bracket 10 is installed in the rotating shaft seat 60 and is rotatably connected to the rotating shaft seat 60 through a rotating shaft 70.

As shown in connection with fig. 2 and 4, in some embodiments, the bridge cable retractor may include a slot portion 40 provided on the second bridge body 1012, the slot portion 40 being primarily used to guide and retain the second end of the bracket 10. The chute portion 40 may be a stainless steel rail structure, which may be disposed on the second bridge body 1012, for example, by threaded connection. Or welded, which is detachably provided to the second bridge body 1012 to avoid damage to the second bridge body 1012 due to cutting or the like.

The second end of the bracket 10 may be provided with a sliding member 14, and the sliding member 14 may be slidably disposed in the sliding slot portion 40. The slide 14 may comprise a pulley or a spool, or a slider. Of course, in some embodiments, the second end of the bracket 10 may not be provided with the slider 14.

In some embodiments, the stent 10 is a stainless steel stent, the stent 10 may be made of stainless steel 304, etc., or the stent 10 may be made of other metallic or non-metallic materials. Preferably, the bracket 10 is of unitary construction.

In some embodiments, the arc-shaped support radius of the bracket 10 should be.

In some embodiments, the bridge cable expansion apparatus may further include a plurality of support rods 50, wherein a first end of the support rods 50 is mounted on the first bridge body 1011 and/or the second bridge body 1012, and preferably, a first end (lower end) of the support rods 50 is mounted on the first bridge body 1011. The support bar 50 is mainly used for supporting the support frame 10 to improve the overall structural stability of the support frame 10.

As shown in fig. 4 and 5, the support rod 50 is provided with a first through groove 51 and a second through groove 52, the first through groove 51 and the second through groove 52 are arranged at intervals along the length direction of the support rod 50, the first through groove 51 is used for the inner arc body 12 to penetrate therethrough, and the inner diameter size of the first through groove 51 can be larger than the section size of the inner arc body 12. The second through groove 52 is used for the outer arc 11 to pass through, and the inner diameter of the second through groove 52 can be larger than the cross section of the outer arc 11.

In some embodiments, the lower end of the support bar 50 may be mounted (e.g., in the form of the first end of the bracket 10) by a pivot mount or the like, so that the support bar 50 may rotate relative to one another.

In some embodiments, the number of support bars 50 is at least three, for example, three may be selected. The support bar 50 is disposed so as to avoid the connecting slider 13.

In some embodiments, the support rod 50 is made of stainless steel material, for example, the support rod 50 may be made of stainless steel 304.

As shown in connection with fig. 3 and 7, in some embodiments, the clamp assemblies 30 may be provided in plural numbers, for example, three clamp assemblies 30 may be provided on each bracket 10.

Each clamp assembly 30 may include a first half-ring 31 and a second half-ring 32. The first half ring body 31 is connected to the outer arc body 11, and for example, the first half ring body 31 may be fixed to the upper surface of the outer arc body 11 by a connecting seat 35, for example, by welding or by screwing.

Further, the first half ring 31 has a first connecting portion 311 at a first end, and the second half ring 31 has a second connecting portion 312 at a second end. The first end of the second half ring 32 is provided with a first fixing portion 321, and the second end of the second half ring 32 is provided with a second fixing portion 322.

The first connecting portion 311 is connected to the first fixing portion 321 by the first fastening member 33, and the second connecting portion 312 is connected to the second fixing portion 322 by the second fastening member 34, so that the bridge cable 20 is limited to the inner circumferences of the first half ring body 31 and the second half ring body 32.

Preferably, the first fastener 33 and the second fastener 34 are bolts or screws, for example, the first fastener 33 and the second fastener 34 are bolts. The first connecting portion 311, the second connecting portion 312, the first fixing portion 321 and the second fixing portion 322 may have threaded holes.

Of course, the clamp assembly 30 may take other forms, and is not specifically limited herein.

In some embodiments, the clamp assembly 30 further comprises a pad sleeve sleeved on the outer periphery of the bridge cable 200, wherein the pad sleeve is sleeved on the inner periphery of the first half ring body 31 and the second half ring body 32, and sleeved on the outer periphery of the bridge cable 200. The cushion cover can play a role in protection, and of course, the cushion cover can be omitted.

The bridge cable telescoping device theory of operation: when the expansion joint A is contracted, the supporting point of the second end (sliding end) of the bracket 10 slides towards the first end (fixed end) of the bracket 10, and the bridge cable 200 on the bracket 10 moves upwards to absorb the movement variable; when the expansion joint a expands, the support point at the first end (fixed end) of the bracket 10 slides to the second end (sliding end) of the bracket 10, and the bridge cable 200 on the bracket 10 moves down to absorb the movement variable.

The bridge cable expansion device is suitable for large-section cables to be laid on bridges and similar civil structures with expansion joints, is used for adapting to the situation that the deformation and expansion amount change of the civil structures such as the bridges causes the cables to deform, has flexible expansion, simple structure, small volume and low cost, and is particularly suitable for bridges with small expansion joints and laying environments with limited laying space.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A bridge cable expansion device for being installed on a bridge (100), wherein the bridge (100) comprises a first bridge body (1011) and a second bridge body (1012), and an expansion joint (a) is arranged between the first bridge body (1011) and the second bridge body (1012); the bridge cable expansion device is characterized by comprising a bracket (10), wherein a first end of the bracket (10) is fixedly arranged on a first bridge body (1011), and a second end of the bracket (10) is movably arranged on a second bridge body (1012);

The longitudinal section of the support (10) is crescent, the support (10) comprises an outer arc body (11) and an inner arc body (12), a first end of the outer arc body (11) is connected with a first end of the inner arc body (12), and a second end of the outer arc body (11) is connected with a second end of the inner arc body (12);

The bridge cable expansion device further comprises a plurality of guide limit grooves (20) arranged on the side walls of the bridge (100), a plurality of connecting sliding blocks (13) are arranged on the outer arc body (11) at intervals, and the connecting sliding blocks (13) are slidably arranged in the guide limit grooves (20);

The upper end of the outer arc body (11) is provided with a clamp assembly (30) for installing the bridge cable (200).

2. Bridge cable retractor device according to claim 1, wherein the bridge cable retractor device comprises a chute portion (40) provided on the second bridge body (1012);

A sliding piece (14) is arranged at the second end of the bracket (10), and the sliding piece (14) is slidably arranged in the sliding groove part (40).

3. Bridge cable retractor device according to claim 2, wherein the slide (14) comprises a pulley or a slide cylinder.

4. The bridge cable retractor device according to claim 1, further comprising a number of support rods (50), a first end of the support rods (50) being mounted on the first bridge body (1011) and/or the second bridge body (1012);

Be equipped with first logical groove (51) and second logical groove (52) on bracing piece (50), first logical groove (51) with second logical groove (52) are followed the length direction interval setting of bracing piece (50), first logical groove (51) are used for supplying interior arc body (12) wear to establish wherein, second logical groove (52) are used for supplying outside arc body (11) wear to establish wherein.

5. Bridge cable retractor device according to claim 4, wherein the number of support rods (50) is at least three.

6. Bridge cable retractor device according to claim 4, wherein the support rod (50) is made of stainless steel material.

7. Bridge cable retractor device according to claim 1, wherein the clamp assembly (30) comprises a first half-ring (31) and a second half-ring (32);

The first half ring body (31) is connected with the outer arc body (11), a first connecting part (311) is arranged at the first end of the first half ring body (31), and a second connecting part (312) is arranged at the second end of the first half ring body (31);

A first fixing part (321) is arranged at the first end of the second half ring body (32), and a second fixing part (322) is arranged at the second end of the second half ring body (32);

The first connecting part (311) is connected with the first fixing part (321) through a first fastener (33), and the second connecting part (312) is connected with the second fixing part (322) through a second fastener (34).

8. Bridge cable retractor device according to claim 7, wherein the first fastener (33) and the second fastener (34) are bolts or screws.

9. The bridge cable retractor device according to claim 7, wherein the clamp assembly (30) further comprises a pad sleeve sleeved on the periphery of the bridge cable (200).

10. Bridge cable retractor device according to any of claims 1 to 9, wherein the bracket (10) is a stainless steel bracket.