CN214695168U

CN214695168U - Stay cable anchoring and traction device of large-span cable-stayed bridge

Info

Publication number: CN214695168U
Application number: CN202120524569.3U
Authority: CN
Inventors: 王家启; 王生涛; 孙伟; 杨庆; 方昂; 唐瑞; 张思雨
Original assignee: Anhui Road and Bridge Engineering Co Ltd
Current assignee: Anhui Road and Bridge Engineering Co Ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-11-12
Anticipated expiration: 2031-03-12

Abstract

The utility model relates to the technical field of cable-stayed bridges, in particular to a stay cable anchoring and traction device of a large-span cable-stayed bridge, which comprises an anchoring box, the lower parts of the centers of the two sides of the anchoring box are fixedly connected with mounting plates, foundation bolts are arranged inside the mounting plates, the top of the anchoring box is provided with a fixed groove, the top of the anchoring box is provided with a sealing cover at the corresponding position of the fixed groove, the inside of the fixed groove is connected with an upper fixed plate, the center of the top of the upper fixed plate is provided with a through hole, the bottom of the upper fixing plate and two sides of the through hole are both provided with guide rods, the outer wall of each guide rod is connected with a lower fixing plate below the upper fixing plate, through setting up anchor case, bottom plate, mounting hole, screw rod, worm wheel, solved at present because anchor case inner space is narrow and small, the operation construction space is limited, the workman is comparatively difficult problem when fixed suspension cable.

Description

Stay cable anchoring and traction device of large-span cable-stayed bridge

Technical Field

The utility model relates to a cable-stay bridge technical field specifically is a large-span cable-stay bridge suspension cable anchor draw gear.

Background

With the continuous development of road and bridge technology, cable-stayed bridges are widely used as one of the main types of large-span bridges, and at present, the common cable-girder anchoring types in large-span cable-stayed bridges mainly include: the anchor box type connection, the ear plate type connection, the anchor pipe type connection and the anchor pulling plate connection are adopted, the anchor box type cable beam anchoring mode is formed by two different materials of steel and concrete, and the combined structure jointly bears pulling force.

At present, because the inner space of the anchoring box is narrow and small, the operation and construction space is limited, and workers are difficult to fix the stay cable, so that the problem is solved by a large-span cable-stayed bridge stay cable anchoring traction device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a large-span cable-stay bridge suspension cable anchor draw gear to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a large-span cable-stayed bridge stay cable anchoring traction device comprises an anchoring box, wherein mounting plates are fixedly connected below the centers of two sides of the anchoring box, foundation bolts are mounted inside the mounting plates, a fixing groove is formed in the top of the anchoring box, a sealing cover is mounted at the top of the anchoring box and at the position corresponding to the fixing groove, an upper fixing plate is connected inside the fixing groove, a through hole is formed in the center of the top of the upper fixing plate, guide rods are mounted at the bottom of the upper fixing plate and on two sides of the through hole, a lower fixing plate is connected to the outer wall of each guide rod and below the upper fixing plate, a mounting hole is formed in the lower fixing plate and under the through hole, a fixing bolt is mounted in the upper fixing plate and at a position far away from the through hole, and a buffer spring is fixedly connected to the outer wall of each guide rod and above the lower fixing plate, the utility model discloses an anchor case, including an upper fixed plate, worm wheel, anchor case, connecting seat, screw rod, worm wheel, connecting seat, the equal fixedly connected with connecting seat in both sides of upper fixed plate, the thread groove has been seted up to the inside center department of connecting seat, the internal connection of thread groove has the screw rod, the outer wall of screw rod and the below fixedly connected with worm wheel at the bottom plate, the inside of anchor case and at the back connection of worm wheel have a pivot, the both ends of pivot just correspond equal fixedly connected with worm in position department at the worm wheel, the one end of pivot is kept away from to the worm just is at the outside fixedly connected with rotation hand wheel of anchor case.

Preferably, the anchoring box, the upper fixing plate, the lower fixing plate and the connecting seat are all made of stainless steel.

Preferably, the lower fixing plate and the fixing groove and the upper fixing plate and the fixing groove are connected in a sliding manner, and the shape of the mounting hole is matched with the shape of the anchor cup of the stay cable.

Preferably, the screw is connected with the thread groove in a threaded manner, and the worm wheel is connected with the worm in a meshed manner.

Preferably, the screw, the worm wheel, the rotating shaft and the anchoring box are connected in a rotating mode, and the outer walls of the worm, the worm wheel and the screw are subjected to chromium plating treatment.

Preferably, the guide rod is connected with the lower fixing plate in a sliding manner, and the buffer spring is fixedly connected with the lower fixing plate and the upper fixing plate.

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

1. in the utility model, by arranging the anchoring box, the lower fixing plate, the mounting hole, the screw rod and the worm wheel, a worker installs the anchoring box at a designated position, the hand wheel is designated, the hand wheel drives the worm to rotate through the rotating shaft, the worm drives the screw rod to rotate through the worm wheel, the screw rod drives the connecting seat to move upwards through the thread groove, the connecting seat drives the lower fixing plate to ascend through the upper fixing plate, the upper fixing plate and the lower fixing plate are separated from the anchoring box, the worker fixedly installs the anchor rod of the stay cable in the mounting hole, the hand wheel is reversely rotated, the upper fixing plate and the lower fixing plate return to the anchoring box, the upper fixing plate is fixed in the anchoring box by using the fixing bolt, therefore, the stay cable is fixed, most of the fixing operation of the stay cable is completed outside the anchoring box, the operation is convenient, and the problems that the operation construction space is limited and workers are difficult to fix the stay cable due to the narrow inner space of the anchoring box at present are solved.

2. The utility model discloses in, through setting up buffer spring, buffer spring can absorb the vibrations that the suspension cable produced when rocking, avoids the suspension cable to damage the upper fixed plate because of rocking.

3. The utility model discloses in, through setting up sealed lid, sealed lid can seal the anchor case, and when avoiding the transportation, external debris get into damage upper fixed plate or bottom plate in the anchor case.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is a partial top sectional view of the worm gear of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1-anchoring box, 2-mounting plate, 3-foundation bolt, 4-fixing groove, 5-sealing cover, 6-upper fixing plate, 7-through hole, 8-guide rod, 9-lower fixing plate, 10-mounting hole, 11-fixing bolt, 12-buffer spring, 13-connecting seat, 14-thread groove, 15-screw, 16-worm wheel, 17-rotating shaft, 18-worm and 19-rotating hand wheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a large-span cable-stayed bridge stay cable anchoring traction device comprises an anchoring box 1, wherein the anchoring box 1, an upper fixing plate 6, a lower fixing plate 9 and a connecting seat 13 are all made of stainless steel, mounting plates 2 are fixedly connected below the centers of two sides of the anchoring box 1, anchor bolts 3 are mounted inside the mounting plates 2, a fixing groove 4 is formed in the top of the anchoring box 1, a sealing cover 5 is mounted at the top of the anchoring box 1 and at the position corresponding to the fixing groove 4, an upper fixing plate 6 is connected inside the fixing groove 4, a through hole 7 is formed in the center of the top of the upper fixing plate 6, guide rods 8 are mounted at the bottom of the upper fixing plate 6 and on two sides of the through hole 7, the guide rods 8 are connected with the lower fixing plate 9 in a sliding connection mode, a buffer spring 12 is fixedly connected with the lower fixing plate 9 and the buffer spring 12 is fixedly connected with the upper fixing plate 6, the outer wall of each guide rod 8 is connected with the lower fixing plate 9 below the upper fixing plate 6, the connection modes of the lower fixing plate 9 and the fixing groove 4 and the connection modes of the upper fixing plate 6 and the fixing groove 4 are both sliding connection, the shape of the mounting hole 10 is matched with the shape of an anchor cup of the stay cable, the mounting hole 10 is arranged in the lower fixing plate 9 and right below the through hole 7, the fixing bolt 11 is arranged in the upper fixing plate 6 and at a position far away from the through hole 7, the buffer spring 12 is fixedly connected to the outer wall of the guide rod 8 and above the lower fixing plate 9, the connecting seats 13 are fixedly connected to both sides of the upper fixing plate 6, the threaded groove 14 is arranged in the center of the inner part of the connecting seat 13, the threaded groove 14 is internally connected with the screw rod 15, the worm wheel 16 and the rotating shaft 17 are rotatably connected with the anchoring box 1, the outer walls of the worm 18, the worm wheel 16 and the screw rod 15 are subjected to chromium plating treatment, and the screw rod 15 is in threaded connection with the threaded groove 14, the worm wheel 16 is connected with the worm 18 in a meshed manner, the worm wheel 16 is fixedly connected to the outer wall of the screw rod 15 below the lower fixing plate 9, the rotating shaft 17 is connected to the inner portion of the anchoring box 1 and the back of the worm wheel 16, the worm 18 is fixedly connected to the two ends of the rotating shaft 17 and the corresponding position of the worm wheel 16, and the rotating hand wheel 19 is fixedly connected to one end, far away from the rotating shaft 17, of the worm 18 and the outer portion of the anchoring box 1.

The utility model discloses work flow: when the device is used, a worker fixes the anchoring box 1 at a designated position by using the foundation bolt 3, the worker unloads the sealing cover 5, takes down the fixing bolt 11, rotates the rotating hand wheel 19, the rotating hand wheel 19 drives the worm 18 to rotate through the rotating shaft 17, the worm 18 drives the screw 15 to rotate through the worm wheel 16, the screw 15 drives the connecting seat 13 to move upwards through the thread groove 14, the connecting seat 13 drives the lower fixing plate 9 to move upwards through the upper fixing plate 6, the lower fixing plate 9 and the upper fixing plate 6 are separated from the anchoring box 1, the worker fixes the anchor cup of the stay cable in the mounting hole 10 of the lower fixing plate 9, the worker reversely rotates the rotating hand wheel 19, the rotating hand wheel 19 drives the worm 18 to reversely rotate through the rotating shaft 17, the worm 18 drives the screw 15 to reversely rotate through the worm wheel 16, the screw 15 drives the connecting seat 13 to move downwards through the thread groove 14, and the connecting seat 13 drives the lower fixing plate 9 to descend through the upper fixing plate 6, the lower fixing plate 9 and the upper fixing plate 6 are returned to the anchoring box 1, and the worker fixes the upper fixing plate 6 in the anchoring box 1 using the fixing bolt 11, thereby completing the fixing operation of the stay cable.

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

Claims

1. The utility model provides a large-span cable-stay bridge suspension cable anchor draw gear, includes anchor case (1), its characterized in that: the anchor box is characterized in that mounting plates (2) are fixedly connected below the centers of two sides of the anchor box (1), foundation bolts (3) are mounted inside the mounting plates (2), a fixing groove (4) is formed in the top of the anchor box (1), a sealing cover (5) is mounted at the top of the anchor box (1) and at the position corresponding to the fixing groove (4), an upper fixing plate (6) is connected inside the fixing groove (4), a through hole (7) is formed in the center of the top of the upper fixing plate (6), guide rods (8) are mounted at the bottom of the upper fixing plate (6) and on two sides of the through hole (7), a lower fixing plate (9) is connected on the outer wall of each guide rod (8) and below the upper fixing plate (6), a mounting hole (10) is formed in the lower fixing plate (9) and under the through hole (7), and a fixing bolt (11) is mounted in the upper fixing plate (6) and at the position far away from the through hole (7), the outer wall of guide bar (8) and in top fixedly connected with buffer spring (12) of bottom plate (9), the equal fixedly connected with connecting seat (13) in both sides of upper fixed plate (6), thread groove (14) have been seted up at the inside center department of connecting seat (13), the internal connection of thread groove (14) has screw rod (15), the outer wall of screw rod (15) and in the below fixedly connected with worm wheel (16) of bottom plate (9), the inside of anchor case (1) and at the back connection of worm wheel (16) have pivot (17), the both ends of pivot (17) just correspond equal fixedly connected with worm (18) of position department in worm wheel (16), the one end of pivot (17) is kept away from in worm (18) and in the outside fixedly connected with rotation hand wheel (19) of anchor case (1).

2. The device for anchoring and pulling the stay cable of a large-span cable-stayed bridge according to claim 1, wherein: the anchoring box (1), the upper fixing plate (6), the lower fixing plate (9) and the connecting seat (13) are all made of stainless steel.

3. The device for anchoring and pulling the stay cable of a large-span cable-stayed bridge according to claim 1, wherein: the lower fixing plate (9) is connected with the fixing groove (4) in a sliding mode, the upper fixing plate (6) is connected with the fixing groove (4) in a sliding mode, and the shape of the mounting hole (10) is matched with the shape of an anchor cup of the stay cable.

4. The device for anchoring and pulling the stay cable of a large-span cable-stayed bridge according to claim 1, wherein: the screw rod (15) and the thread groove (14) are connected in a threaded manner, and the worm wheel (16) and the worm (18) are connected in a meshed manner.

5. The device for anchoring and pulling the stay cable of a large-span cable-stayed bridge according to claim 1, wherein: the screw rod (15), the worm wheel (16), the rotating shaft (17) and the anchoring box (1) are connected in a rotating mode, and the outer walls of the worm (18), the worm wheel (16) and the screw rod (15) are subjected to chromium plating treatment.

6. The device for anchoring and pulling the stay cable of a large-span cable-stayed bridge according to claim 1, wherein: the guide rod (8) is connected with the lower fixing plate (9) in a sliding mode, and the buffer spring (12) is fixedly connected with the lower fixing plate (9) and the buffer spring (12) is fixedly connected with the upper fixing plate (6).