CN215947931U

CN215947931U - Prestressed tensioning support for bridge

Info

Publication number: CN215947931U
Application number: CN202122519534.3U
Authority: CN
Inventors: 黄文章
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-03-04
Anticipated expiration: 2031-10-20

Abstract

The utility model relates to the technical field of bridge construction equipment, in particular to a prestressed tensioning bracket for a bridge, which comprises an underframe, a supporting table and a rotating support, wherein the upper end of the underframe is fixedly connected with the supporting table, the outer side of the supporting table is fixedly connected with a telescopic rod, the outer end of the telescopic rod is fixedly connected with a clamping plate, the lower side of the inner end of the clamping plate is fixedly connected with a movable sleeve, the movable sleeve is connected with the underframe in a sliding manner, the inner side of the movable sleeve is spirally connected with a bidirectional threaded shaft, the middle position of the bidirectional threaded shaft is fixedly connected with a worm wheel, and the lower end of the worm wheel is meshed and connected with a worm rod. And the bridge can keep straight, so that the bridge is convenient to be prestressed and tensioned.

Description

Prestressed tensioning support for bridge

Technical Field

The utility model relates to the technical field of bridge construction equipment, in particular to a prestressed tensioning bracket for a bridge.

Background

With the development of society, the application of prestressing force tensioning is more extensive, prestressing force tensioning is to add pulling force in advance in the component for the prestressing force tensioning component that is exerted bears compressive stress, and then makes it produce certain deformation, deals with the load that structure itself received, including the load of component self weight, wind load, snow load, earthquake load effect etc. steel strand wires, jack, anchor slab, clamping piece are used in general tensioning, before engineering structure component bears the external load, to the steel strand wires in the tension module, exert prestressing force, improve the bending resistance and the rigidity of component, postpone the time that the crack appears, increase the durability of component, make original resistance stronger.

In the prior art, when the bridge prestress tension test is used, the bridge cannot be fixedly supported, so that the bridge is easy to shake, the tension steel bars are easy to break, and the bridge prestress tension test is not beneficial to the use of the bridge prestress tension; and when carrying out the prestressing force tensioning to the bridge, can not guarantee the levelness of bridge to influence the prestressing force tensioning of bridge, can not carry out altitude mixture control to the bridge simultaneously, be not convenient for the prestressing force tensioning of bridge to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prestressed tensioning bracket for a bridge, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a prestressing force stretch-draw support for bridge, includes chassis, brace table and rotation support, the upper end fixedly connected with brace table of chassis, the outside fixedly connected with telescopic link of brace table, the outer end fixedly connected with grip block of telescopic link, the inner downside fixedly connected with movable sleeve of grip block, sliding connection between movable sleeve and the chassis, movable sleeve's inboard spiral connection has the two-way screw thread axle, the intermediate position department fixedly connected with worm wheel of two-way screw thread axle, the lower extreme meshing of worm wheel is connected with the worm, the fixed landing leg of lower extreme fixedly connected with of chassis, the lower extreme of fixed landing leg rotates and is connected with the sleeve, telescopic inboard spiral connection has the threaded rod, the lower extreme of threaded rod rotates and is connected with the rotation support, the front end fixedly connected with spirit level of brace table.

Preferably, the lower extreme intermediate position department fixedly connected with fixed frame of brace table, fixed connection between fixed frame and the chassis, rotate between fixed frame and the two-way screw shaft and be connected, rotate between fixed frame and the worm and be connected, the front end fixedly connected with carousel of worm, rotate between carousel and the chassis and be connected.

Preferably, the upper end of the threaded rod is fixedly connected with a limiting rod, and the limiting rod is connected with the fixed supporting leg in a sliding mode.

Preferably, the number of the clamping plates is two, and the clamping plates are symmetrically arranged about the central axis of the supporting table.

Preferably, the number of the threaded rods is four, and the threaded rods are symmetrically arranged about a central axis of the chassis.

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

1. according to the utility model, the worm wheel drives the bidirectional threaded shaft to rotate by utilizing the rotation of the worm through the clamping plate, the bidirectional threaded shaft and the worm, so that the movable sleeve drives the clamping plate to move, the support frame can clamp bridges of different models, the bridges can be kept straight, and the bridges are convenient to prestress and stretch;

2. according to the utility model, through the sleeve, the threaded rod and the level gauge, the threaded rod can move up and down by utilizing the rotation of the sleeve, so that the levelness of the supporting table can be conveniently adjusted, and the supporting table can be adjusted to be in a horizontal state to support the bridge through the data display of the level gauge, so that the prestress tension test data of the bridge is more accurate, and the height of the supporting table can be conveniently adjusted.

Drawings

FIG. 1 is a cross-sectional view of the integral mounting structure of the present invention;

FIG. 2 is a schematic view of the mounting structure of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a schematic top view of the mounting structure of FIG. 1 in accordance with the present invention;

fig. 4 is a right side view of the mounting structure of the worm wheel, worm and turntable of the present invention.

In the figure: 1. a chassis; 2. a support table; 3. a telescopic rod; 4. a clamping plate; 5. an active cannula; 6. a bidirectional threaded shaft; 7. a worm gear; 8. a worm; 9. fixing the supporting legs; 10. a sleeve; 11. a threaded rod; 12. rotating the support; 13. a level gauge; 14. a fixing frame; 15. a turntable; 16. a limiting rod.

Detailed Description

The technical solutions 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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a prestressed tension bracket for a bridge comprises an underframe 1, brace table 2 and rotation support 12, the upper end fixedly connected with brace table 2 of chassis 1, the outside fixedly connected with telescopic link 3 of brace table 2, the outer end fixedly connected with grip block 4 of telescopic link 3, the inner downside fixedly connected with movable sleeve 5 of grip block 4, sliding connection between movable sleeve 5 and the chassis 1, the inboard screwed connection of movable sleeve 5 has two-way threaded shaft 6, the fixedly connected with worm wheel 7 of intermediate position department of two-way threaded shaft 6, the lower extreme meshing of worm wheel 7 is connected with worm 8, the lower extreme fixedly connected with fixed leg 9 of chassis 1, the lower extreme of fixed leg 9 rotates and is connected with sleeve 10, the inboard screwed connection of sleeve 10 has threaded rod 11, the lower extreme of threaded rod 11 rotates and is connected with rotation support 12, the front end fixedly connected with spirit level 13 of brace table 2.

A fixed frame 14 is fixedly connected to the middle position of the lower end of the support table 2, the fixed frame 14 is fixedly connected with the bottom frame 1, the fixed frame 14 is rotatably connected with the bidirectional threaded shaft 6, the fixed frame 14 is rotatably connected with the worm 8, a rotary table 15 is fixedly connected to the front end of the worm 8, and the rotary table 15 is rotatably connected with the bottom frame 1 so as to support the worm 8 and the bidirectional threaded shaft 6; the upper end of the threaded rod 11 is fixedly connected with a limiting rod 16, the limiting rod 16 is in sliding connection with the fixed supporting leg 9, and the sleeve 10 is prevented from driving the threaded rod 11 to rotate so as to prevent the lifting of the rotating support 12 from being influenced; the number of the clamping plates 4 is two, and the clamping plates 4 are symmetrically arranged about the central axis of the support table 2, so that the bridge can keep straight to perform prestress tensioning and is stable; the quantity of threaded rod 11 has four, and threaded rod 11 makes a supporting bench 2 can adjust to the level about the center pin symmetry setting of chassis 1 to the prestressing force stretch-draw of the bridge of being convenient for.

The working process is as follows: the device does not adopt any power supply for power supply when in use, when the bridge is prestressed and tensioned, the device is moved to a use position, the sleeve 10 is rotated to enable the threaded rod 11 to move up and down, thereby enabling the rotary support 12 to move up and down, enabling the support platform 2 to be kept horizontal by observing the data display of the level gauge 13, simultaneously enabling the threaded rod 11 not to rotate through the limiting rod 16 arranged, thereby enabling the threaded rod 11 to move up and down smoothly, thereby enabling the support platform 2 to adjust the levelness, simultaneously enabling the height of the support platform 2 to be adjusted, enabling the bridge to move to a specified height for prestressed tensioning, placing the bridge required for prestressed tensioning on the upper end of the support platform 2, simultaneously rotating the turntable 15, enabling the worm 8 to drive the worm wheel 7 to rotate, thereby enabling the movable sleeve 5 to move inwards, and further enabling the clamping plate 4 to move inwards, and carry out the stable support to grip block 4 through telescopic link 3, make grip block 4 can stabilize the centre gripping to the bridge, prevent that the bridge from taking place to rock and influencing the prestressing force stretch-draw of bridge to make the prestressing force stretch-draw of bridge more effective, and can make this device can be applicable to the bridge of different models and different place.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prestressing force stretch-draw support for bridge, includes chassis (1), brace table (2) and rotating support (12), its characterized in that: the upper end of the chassis (1) is fixedly connected with a supporting table (2), the outer side of the supporting table (2) is fixedly connected with a telescopic rod (3), the outer end of the telescopic rod (3) is fixedly connected with a clamping plate (4), the lower side of the inner end of the clamping plate (4) is fixedly connected with a movable sleeve (5), the movable sleeve (5) is in sliding connection with the chassis (1), the inner side of the movable sleeve (5) is spirally connected with a two-way threaded shaft (6), the middle position of the two-way threaded shaft (6) is fixedly connected with a worm wheel (7), the lower end of the worm wheel (7) is meshed with a worm (8), the lower end of the chassis (1) is fixedly connected with a fixed supporting leg (9), the lower end of the fixed supporting leg (9) is rotatably connected with a sleeve (10), and the inner side of the sleeve (10) is spirally connected with a threaded rod (11), the lower extreme of threaded rod (11) rotates and is connected with and rotates support (12), the front end fixedly connected with spirit level (13) of brace table (2).

2. The prestressed tensioning bracket for a bridge according to claim 1, wherein: the utility model discloses a supporting bench, including supporting bench, fixed frame (14) of lower extreme intermediate position department fixedly connected with of (2), fixed connection between fixed frame (14) and chassis (1), rotate between fixed frame (14) and two-way threaded shaft (6) and be connected, rotate between fixed frame (14) and worm (8) and be connected, the front end fixedly connected with carousel (15) of worm (8), rotate between carousel (15) and chassis (1) and be connected.

3. The prestressed tensioning bracket for a bridge according to claim 1, wherein: the upper end of the threaded rod (11) is fixedly connected with a limiting rod (16), and the limiting rod (16) is connected with the fixed supporting leg (9) in a sliding mode.

4. The prestressed tensioning bracket for a bridge according to claim 1, wherein: the number of the clamping plates (4) is two, and the clamping plates (4) are symmetrically arranged relative to the central axis of the supporting platform (2).

5. The prestressed tensioning bracket for a bridge according to claim 1, wherein: the number of the threaded rods (11) is four, and the threaded rods (11) are symmetrically arranged relative to the central axis of the base frame (1).