CN220908189U

CN220908189U - Reverse pulling pre-pressing device for steel strands of cantilever casting box girder bracket

Info

Publication number: CN220908189U
Application number: CN202322402797.5U
Authority: CN
Inventors: 刘治国; 陆亚南; 叶飞; 丁益峰; 黄凯
Original assignee: Zhangjiagang Xinhua Prestressing Strand Co ltd
Current assignee: Zhangjiagang Xinhua Prestressing Strand Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-05-07
Anticipated expiration: 2033-09-05

Abstract

The utility model relates to a steel strand back-pulling pre-pressing device for a cantilever box girder bracket, which comprises a bearing platform, wherein a pier column is arranged at the upper end of the bearing platform, a supporting table is arranged at the upper end of the pier column, two groups of supporting columns are arranged on the supporting table, brackets are arranged at the upper ends of the supporting columns, a cross beam is arranged between the two groups of brackets, steel strand pulling and pressing assemblies are arranged on the left side and the right side of the cross beam, and an elastic supporting component is arranged between the cross beam and the supporting table. This hang and water case roof beam bracket steel strand wires and draw pre-compaction device in opposite directions supports the crossbeam through two sets of support columns and the bracket of supporting bench upper end, and the pre-compaction board device is on the crossbeam to be connected with the cushion cap through the steel strand wires of both sides, make the pre-compaction board laminate the crossbeam steadily and exert certain precompression to it, can strengthen the connection stability of this crossbeam greatly, the setting of elastic support part can further support this crossbeam, makes it safer and more steady.

Description

Reverse pulling pre-pressing device for steel strands of cantilever casting box girder bracket

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a reverse pulling pre-pressing device for a steel strand of a cantilever casting box girder bracket.

Background

Along with the continuous expansion of bridge construction scale in China, various advanced construction technologies provide quality and safety guarantee for bridge construction, and the basket hanging cantilever pouring construction has the characteristics of good flexibility, strong adaptability, no need of a large number of construction supports and temporary equipment, no influence on navigation and traffic under the bridge, no influence on construction by seasons and water levels and the like, and becomes an effective construction means for constructing a large-midspan bridge.

The bracket method construction is adopted more and more in the construction of the continuous beam No. 0 block, and the pre-pressing of the bracket becomes an important means for detecting the safety in the construction of the continuous beam frame, and the publication number is: the utility model provides an assemble steel-concrete combination continuous beam, this case can support the continuous beam through setting up spacing groove and strengthening rib, can improve the area of contact of continuous beam and concrete beam, through setting up the connecting frame, can connect adjacent continuous beam, improve the bearing transfer area, can utilize the concrete beam to carry out spacingly to the continuous beam simultaneously, but it is in practical application, to the both sides of beam structure and upper end lack and draw the pressure structure, lead to its holistic stability not strong enough, take place the incident easily, so put forward a suspension casting case beam bracket steel strand wires and draw pre-compaction device to solve above-mentioned problem.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a back-pulling prepressing device for a steel strand of a cantilever casting box girder bracket, which aims to solve the problems in the background.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the steel strand back-pulling prepressing device for the cantilever casting box girder bracket comprises a bearing platform, wherein a pier column is arranged at the upper end of the bearing platform, a supporting table is arranged at the upper end of the pier column, two groups of supporting columns are arranged on the supporting table, brackets are arranged at the upper ends of the supporting columns, a cross beam is arranged between the two groups of brackets, steel strand pulling and pressing assemblies are arranged on the left side and the right side of the cross beam, and an elastic supporting part is arranged between the cross beam and the supporting table;

The steel strand pulling and pressing assembly comprises a pre-pressing plate arranged at the upper end of a cross beam, wherein a plurality of groups of steel strands connected with the upper end of a bearing platform are arranged on the left side and the right side of the pre-pressing plate, and positioning components used for fixing the steel strands are arranged on the two sides of the top of the bearing platform.

Preferably, the positioning component comprises two groups of L-shaped frames arranged on the bearing platform, the L-shaped frames are provided with through holes for the steel strands to penetrate through, and the L-shaped frames are fixed on the bearing platform through first bolts.

Preferably, two groups of positioning columns and positioning clamping blocks which are inserted into the cross beam are arranged at the bottom of the pre-pressing plate.

Preferably, the two sides of the bottom of the cross beam are provided with protruding blocks embedded in the bracket, and the two sides of the bracket are fixed with the cross beam through second bolts.

Preferably, the elastic supporting component comprises two groups of extrusion blocks respectively attached to the end faces of the cross beam and the supporting table, a telescopic rod is arranged between the two groups of extrusion blocks, a first spring is sleeved on the outer side of the telescopic rod, and a second spring is sleeved on the supporting column.

(III) beneficial effects

Compared with the prior art, the utility model provides a back-pulling prepressing device for a steel strand of a cantilever casting box girder bracket, which has the following beneficial effects:

This hang and water case roof beam bracket steel strand wires and draw pre-compaction device in opposite directions supports the crossbeam through two sets of support columns and the bracket of supporting bench upper end, and the pre-compaction board device is on the crossbeam to be connected with the cushion cap through the steel strand wires of both sides, make the pre-compaction board laminate the crossbeam steadily and exert certain precompression to it, can strengthen the connection stability of this crossbeam greatly, the setting of elastic support part can further support this crossbeam, makes it safer and more steady.

Drawings

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

fig. 2 is an enlarged view of fig. 1 at a in accordance with the present utility model.

In the figure: 1 cushion cap, 2L type frame, 3 steel strand wires, 4 brace table, 5 crossbeam, 6 reference column, 7 location fixture block, 8 pre-compaction board, 9 pier stud, 10 perforation, 11 first bolts, 12 lug, 13 bracket, 14 support column, 15 second spring, 16 telescopic link, 17 first spring, 18 extrusion piece, 19 second bolt.

Detailed Description

The following description of the preferred embodiments of the present utility model is provided in connection with the accompanying drawings, and it is to be understood that the utility model is not limited thereto.

The drawings are simplified schematic views, and only the basic structure of the present utility model is schematically described, so that only the constitution related to the present utility model is shown.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and furthermore, the terms "first", "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implying a number of the technical features indicated, whereby the features defining "first", "second" may explicitly or implicitly include one or more of such features, and in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and for example, may be fixedly connected, may be detachably connected, or integrally connected, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected through an intermediate medium, and may be in communication with the inside of two elements, and the specific meaning of the terms in the present utility model may be understood as specific to one of ordinary skill in the art.

Referring to fig. 1-2, in the embodiment of the utility model, a steel strand back-pulling pre-pressing device for a cantilever box girder bracket comprises a bearing platform 1, wherein a pier column 9 is arranged at the upper end of the bearing platform 1, a supporting table 4 is arranged at the upper end of the pier column 9, two groups of supporting columns 14 are arranged on the supporting table 4, brackets 13 are arranged at the upper ends of the supporting columns 14, a cross beam 5 is arranged between the two groups of brackets 13, the cross beam 5 is stably supported by the supporting columns 14 and the brackets 13, so that the cross beam 5 is installed, steel strand pulling and pressing assemblies are arranged at the left side and the right side of the cross beam 5, a certain forward pre-pressing force is applied to the cross beam 5 by the steel strand pulling and pressing assemblies, so that the connection stability is better, an elastic supporting part is arranged between the cross beam 5 and the supporting table 4, and the arrangement of the elastic supporting part can further support the cross beam 5, so that the whole stable effect of the cross beam 5 is enhanced;

The steel strand pulling and pressing assembly comprises a pre-pressing plate 8 arranged at the upper end of a cross beam 5, a plurality of groups of steel strands 3 connected with the upper end of a bearing platform 1 are arranged on the left side and the right side of the pre-pressing plate 8, positioning components used for fixing the steel strands 3 are arranged on the two sides of the top of the bearing platform 1, the pre-pressing plate 8 is arranged above the cross beam 5, the steel strands 3 on the two sides are fixed on the bearing platform 1 through the positioning components, the pre-pressing plate 8 is pressed against the cross beam 5, and the connection stability of the cross beam 5 can be enhanced.

Further, the positioning component comprises two groups of L-shaped frames 2 arranged on the bearing platform 1, through holes 10 for the steel strands 3 to penetrate are processed on the L-shaped frames 2, the L-shaped frames 2 are fixed on the bearing platform 1 through first bolts 11, the steel strands 3 penetrate through the through holes 10 on the L-shaped frames 2, and the L-shaped frames 2 are fixed on the bearing platform 1 through the first bolts 11, so that the steel strands 3 are fixed and stable.

Further, the bottom of the pre-pressing plate 8 is provided with two groups of positioning columns 6 and positioning clamping blocks 7 which are inserted into the cross beam 5, and when the pre-pressing plate 8 is arranged on the cross beam 5, the positioning columns 6 and the positioning clamping blocks 7 are inserted into the cross beam 5, so that the fixing effect of the pre-pressing plate on the cross beam is improved.

Further, two sides of the bottom of the beam 5 are provided with protruding blocks 12 embedded in the bracket 13, two sides of the bracket 13 are fixed with the beam 5 through second bolts 19, the protruding blocks 12 are clamped on the bracket 13, and the bracket 13 is connected with the beam 5 through the second bolts 19, so that the beam support is stable.

Further, the elastic supporting component comprises two groups of extrusion blocks 18 respectively attached to the end faces of the cross beam 5 and the supporting table 4, a telescopic rod 16 is arranged between the two groups of extrusion blocks 18, a first spring 17 is sleeved on the outer side of the telescopic rod 16, a second spring 15 is sleeved on the supporting column 14, and when the telescopic rod 16 and the second spring 15 are pressed, the two groups of extrusion blocks 18 are pushed outwards, so that the stability of supporting the cross beam 5 can be enhanced.

In summary, according to the steel strand reverse-pulling pre-pressing device for the cantilever box girder bracket, the cross beam 5 is arranged between the two groups of brackets 13, the lug 12 is clamped on the bracket 13, the bracket 13 is connected with the cross beam 5 through the second bolt 19, the cross beam is supported, the two groups of extrusion blocks 18 are pushed outwards when the telescopic rod 16 and the second spring 15 are pressed, the stability of supporting the cross beam 5 can be enhanced, meanwhile, the pre-pressing plate 8 is arranged on the cross beam 5, the steel strand 3 passes through the through hole 10 on the L-shaped frame 2, the L-shaped frame 2 is fixed on the bearing platform 1 through the first bolt 11, so that the steel strand 3 is fixed and stable, the pre-pressing plate 8 is pressed on the cross beam 5, and the connection stability of the cross beam 5 can be enhanced, so that the steel strand is safer and more stable.

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, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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

1. The utility model provides a hang and water box girder bracket steel strand wires and draw pre-compaction device which characterized in that: the steel strand pulling and pressing device comprises a bearing platform (1), wherein a pier column (9) is arranged at the upper end of the bearing platform (1), a supporting table (4) is arranged at the upper end of the pier column (9), two groups of supporting columns (14) are arranged on the supporting table (4), brackets (13) are arranged at the upper ends of the supporting columns (14), a cross beam (5) is arranged between the two groups of brackets (13), steel strand pulling and pressing assemblies are arranged on the left side and the right side of the cross beam (5), and an elastic supporting component is arranged between the cross beam (5) and the supporting table (4);

The steel strand pulling and pressing assembly comprises a pre-pressing plate (8) arranged at the upper end of a cross beam (5), wherein a plurality of groups of steel strands (3) connected with the upper end of a bearing platform (1) are arranged on the left side and the right side of the pre-pressing plate (8), and positioning components used for fixing the steel strands (3) are arranged on the two sides of the top of the bearing platform (1).

2. The back-pulling prepressing device for steel strands of a cantilever box girder bracket according to claim 1, which is characterized in that: the positioning component comprises two groups of L-shaped frames (2) arranged on the bearing platform (1), a through hole (10) for penetrating the steel strand (3) is formed in the L-shaped frames (2), and the L-shaped frames (2) are fixed on the bearing platform (1) through first bolts (11).

3. The back-pulling prepressing device for steel strands of a cantilever box girder bracket according to claim 1, which is characterized in that: the bottom of the pre-pressing plate (8) is provided with two groups of positioning columns (6) and positioning clamping blocks (7) which are inserted into the cross beam (5).

4. The back-pulling prepressing device for steel strands of a cantilever box girder bracket according to claim 1, which is characterized in that: the two sides of the bottom of the cross beam (5) are provided with protruding blocks (12) embedded in the brackets (13), and the two sides of the brackets (13) are fixed with the cross beam (5) through second bolts (19).

5. The back-pulling prepressing device for steel strands of a cantilever box girder bracket according to claim 1, which is characterized in that: the elastic supporting component comprises two groups of extrusion blocks (18) respectively attached to the end faces of the cross beam (5) and the supporting table (4), a telescopic rod (16) is arranged between the two groups of extrusion blocks (18), a first spring (17) is sleeved on the outer side of the telescopic rod (16), and a second spring (15) is sleeved on the supporting column (14).