CN211340424U

CN211340424U - Special-shaped clamp for tensioning bridge sling

Info

Publication number: CN211340424U
Application number: CN201922194964.5U
Authority: CN
Inventors: 何涛; 唐左平; 吕雪; 吴刚; 郝立林; 张首波
Original assignee: Zhejiang Communications Construction Group Co Ltd
Current assignee: Zhejiang Communications Construction Group Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-08-25
Anticipated expiration: 2029-12-10

Abstract

The utility model relates to a special-shaped clamp for bridge sling tensioning, which comprises a conical clamp clamped on an anchor cup; a shoulder pole beam is fixedly arranged on the conical clamp, symmetrical pull rods penetrate through two sides of the shoulder pole beam, a jack is connected to each pull rod, an arc-shaped clamp is connected to the bottom of each pull rod, and a base plate is arranged between each jack and the shoulder pole beam; the utility model has simple structure and convenient use, and the conical clamp is connected with the anchor cup to ensure the engaging force between the anchor cup and the bridge sling and prevent slipping; the use safety is ensured.

Description

Special-shaped clamp for tensioning bridge sling

Technical Field

The utility model belongs to the technical field of bridge sling instrument, concretely relates to special-shaped anchor clamps for bridge sling stretch-draw.

Background

At present, the prestressed anchorage device of bridges and bridges in China adopts a structure form that a common steel strand is used as a clamping piece type anchorage device, namely an anchor ring and a clamping piece, in order to prevent the prestressed steel strand from slipping from the clamping piece to cause the failure of the whole prestressed structure, the traditional anchorage device is limited by adding a pressing plate at the first end part of the anchor ring, but the structure is limited by the pressing plate to be unstable, so the traditional pressing plate type limiting mode cannot meet the purpose of preventing the prestressed steel strand from slipping from the clamping piece.

The anchor cup of current bridge hoist cable is usually designed for the rectangle to make things convenient for the prestressing force to stretch, but the rectangle is not conform to the pleasing to the eye requirement of bridge, and at present design is the dysmorphism structure more, like structure appearance such as arc, circular, toper, but structural strength is not high, is unfavorable for the security of hoist cable stretch-draw, simultaneously, brings the hidden danger to the structure of bridge girder body itself.

In view of the above technical problems, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the defect among the above-mentioned prior art, provide a simple structure, convenient and practical can solve the problem of bridge hoist cable dysmorphism anchor cup stretch-draw, avoids influencing the bridge construction's the special-shaped anchor clamps that are used for bridge hoist cable stretch-draw simultaneously.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a special-shaped clamp for tensioning a bridge sling comprises a conical clamp clamped on an anchor cup; the taper clamp is fixedly provided with a shoulder pole beam, symmetrical pull rods penetrate through two sides of the shoulder pole beam, a jack is connected to each pull rod, the bottom of each pull rod is connected with the arc clamp, and a base plate is arranged between the jack and the shoulder pole beam.

As a preferred mode of the utility model, the conical fixture is a hollow structure and is a conical surface with a large lower part and a small upper part; the inner surface of the conical clamp is matched and attached with the outer surface of the anchor cup.

As the utility model discloses an optimal mode, the toper anchor clamps include two symmetrical toper lamellar bodies, and two toper lamellar body outsides are formed with a plurality of connecting holes, wear to be equipped with the screw rod in the connecting hole, and the screw rod outside is connected with the nut.

As the utility model discloses an optimal mode, be formed with the locating hole in the anchor cup, the inside of locating hole is pegged graft and is had the bridge cable, the top of bridge cable runs through the top of anchor cup and extends to its top, the bottom of anchor cup is connected with connecting screw, and the connecting screw bottom has set firmly the arc fork ear, and the arc fork ear is installed on bridge roof beam face otic placode, and bridge roof beam face otic placode sets firmly on the bridge floor.

As an optimal mode of the utility model, the internal diameter of locating hole is greater than the external diameter of bridge sling.

As an optimized mode of the utility model, the pull rod passes the arc-shaped clamp and has connected gradually gasket and set nut.

As a preferred mode of the present invention, the arc-shaped clamp includes a connecting portion and mounting portions disposed at both sides of the connecting portion; the mounting part is fixedly connected with the connecting part and is integrally formed.

As the utility model discloses an optimal mode, connecting portion are the ascending circular arc structure of opening, and connecting portion and arc fork ear and bridge beam face otic placode's outside looks adaptation laminating are connected.

As the utility model discloses a preferred mode, be formed with a plurality of mounting holes on the installation department, wear to be equipped with the bolt in the mounting hole, the bolt outside is connected with set nut.

As an optimized mode of the utility model, the top of the pull rod is connected with the pull rod nut after passing through the jack.

The utility model has the advantages that:

1. the utility model has simple structure and convenient use, and the conical clamp is connected with the anchor cup to ensure the engaging force between the anchor cup and the bridge sling and prevent slipping; the use safety is ensured;

2. the tensioning tool of the utility model directly utilizes the position of the bridge sling, and is matched with the shapes of the anchor cup and the fork lug of the bridge sling, thereby ensuring the safety of the sling tensioning and avoiding the adverse effect on the bridge girder body;

3. the utility model discloses a be equipped with symmetrical pull rod in shoulder pole roof beam both sides, exert prestressing force simultaneously through two jacks, can improve the holistic security of hoist cable stretch-draw and stability.

Drawings

FIG. 1 is a front view of a bridge sling according to an embodiment of the present invention;

FIG. 2 is a side view of a bridge sling according to an embodiment of the present invention;

fig. 3 is a front view of an embodiment of the present invention;

fig. 4 is a side view of an embodiment of the invention;

FIG. 5 is a schematic structural view of a tapered clamp according to an embodiment of the present invention;

FIG. 6 is a structural diagram of an arc clamp according to an embodiment of the present invention;

reference numbers in the figures: the bridge sling 1, the anchor cup 2, the connecting screw rod 3, the arc fork ear 4, the bridge beam face ear plate 5, the draw-bar nut 6, the jack 7, the backing plate 8, the shoulder pole beam 9, the conical clamp 10, the draw bar 11, the bolt 12, the positioning nut 13, the screw rod 14, the nut 15, the arc clamp 16, the positioning nut 17, the positioning hole 20, the gasket 30, the conical sheet body 100, the connecting hole 101, the connecting part 160, the mounting part 161 and the mounting hole 162.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Example (b): as shown in fig. 1-6, a special-shaped clamp for tensioning a bridge sling comprises a conical clamp 10 clamped on an anchor cup 2; a carrying pole beam 9 is fixedly arranged on the conical clamp 10, symmetrical pull rods 11 penetrate through two sides of the carrying pole beam 9, a jack 7 is connected to each pull rod 11, an arc-shaped clamp 16 is connected to the bottom of each pull rod 11, a base plate 8 is arranged between each jack 7 and the carrying pole beam 9, and the top of each pull rod 11 penetrates through the jack 7 to be connected with a pull rod nut 6; the utility model has simple structure and convenient use, and the conical clamp is connected with the anchor cup to ensure the engaging force between the anchor cup and the bridge sling and prevent slipping; the use safety is ensured.

The arc-shaped fork lugs 4 are connected with bridge beam surface lug plates 5, and the other ends of the bridge suspension cables 1 are connected with arch ribs or main cables of a bridge; the conical clamp 10 is of a hollow structure and is a conical surface with a large lower part and a small upper part; the inner surface of the conical clamp 10 is matched and attached with the outer surface of the anchor cup 2; the conical clamp 10 of the utility model is made of high-strength steel, is matched with the shape of the anchor cup 2, and is formed by combining two conical sheet bodies 100 to clamp the anchor cup 2; the other arc-shaped clamp 16 is also made of high-strength steel and is matched with the arc-shaped fork ears 4, two arc-shaped clamps 16 are arranged, the two arc-shaped clamps 16 are temporarily connected with the jack 7 on the shoulder pole beam 9 through two pull rods 11, and the conical clamp 10 is used as a supporting stress point of the shoulder pole beam 9.

Specifically, the tapered clamp 10 includes two symmetrical tapered sheet bodies 100, a plurality of connecting holes 101 are formed on outer sides of the two tapered sheet bodies 100, a screw 14 penetrates through the connecting holes 101, and a nut 15 is connected to an outer side of the screw 14.

The utility model discloses a tensioning tool directly utilizes bridge sling position itself to with bridge sling anchor cup, fork ear shape phase-match, ensure the security of hoist cable stretch-draw, avoided causing adverse effect to the bridge roof beam body itself simultaneously.

Be formed with locating hole 20 in the anchor cup 2, the inside of locating hole 20 is pegged graft and is had bridge hoist cable 1, the top of bridge hoist cable 1 runs through the top of anchor cup 2 and extends to its top, the bottom of anchor cup 2 is connected with connecting

screw

3, and 3 bottoms of connecting screw have set firmly arc fork ear 4, and arc fork ear 4 installs on bridge roof beam face otic placode 5, and bridge roof beam face otic placode 5 sets firmly on the bridge floor, and the internal diameter of locating hole 20 is greater than bridge hoist cable 1's external diameter, and pull rod 11 passes arc anchor clamps 16 and has connected gradually gasket 30 and set nut 17.

The arc clamp 16 comprises a connecting part 160 and mounting parts 161 arranged at two sides of the connecting part 160; the mounting portion 161 is fixedly connected with the connecting portion 160 and integrally formed; the overall structural strength and firmness of the arc-shaped clamp 16 are improved, and the use safety is further ensured.

The connecting part 160 is of an arc structure with an upward opening, and the connecting part 160 is matched, attached and connected with the arc fork lugs 4 and the outer parts of the bridge beam face ear plates 5; the mounting portion 161 is formed with a plurality of mounting holes 162, and a bolt 12 is inserted into the mounting hole 162, and a positioning nut 13 is connected to the outer side of the bolt 12.

The utility model discloses an operating procedure:

installing a clamp: firstly, mounting a conical clamp 10, a screw 14 and a nut 15, and firmly fixing the three components; then, mounting a shoulder pole beam 9, a base plate 8, a jack 7 and a draw rod nut 6; the pull rod 11, the arc-shaped clamp 16, the bolt 12, the positioning nut 13, the gasket 30 and the positioning nut 17 are sequentially arranged; at this point the fixture installation is complete.

Pre-stress tension: and (3) starting oil pumps of the jacks 7, simultaneously applying prestress to the two jacks 7 until a design value, then unloading, and finishing tensioning.

Disassembling: and disassembling according to the reverse order of installation.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: bridge sling 1, anchor cup 2, connecting screw rod 3, arc fork ear 4, bridge beam surface ear plate 5, draw bar nut 6, jack 7, backing plate 8, shoulder pole beam 9, taper clamp 10, draw bar 11, bolt 12, positioning nut 13, screw rod 14, nut 15, arc clamp 16, positioning nut 17, positioning hole 20, gasket 30, taper sheet body 100, connecting hole 101, connecting part 160, mounting part 161, mounting hole 162 and other terms, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A special-shaped clamp for tensioning a sling of a bridge is characterized in that the special-shaped clamp comprises a clamp body and a clamp cover; comprises a conical clamp (10) clamped on an anchor cup (2); a shoulder pole beam (9) is fixedly arranged on the conical clamp (10), symmetrical pull rods (11) penetrate through two sides of the shoulder pole beam (9), a jack (7) is connected onto each pull rod (11), an arc-shaped clamp (16) is connected to the bottom of each pull rod (11), and a base plate (8) is arranged between each jack (7) and the shoulder pole beam (9).

2. The special-shaped clamp for tensioning the sling of a bridge as claimed in claim 1, wherein: the conical clamp (10) is of a hollow structure and is a conical surface with a large lower part and a small upper part; the inner surface of the conical clamp (10) is matched and attached with the outer surface of the anchor cup (2).

3. A profiled clamp for bridge sling tensioning according to claim 1 or 2, characterised in that: the conical clamp (10) comprises two symmetrical conical sheet bodies (100), a plurality of connecting holes (101) are formed in the outer sides of the two conical sheet bodies (100), a screw rod (14) penetrates through the connecting holes (101), and a nut (15) is connected to the outer side of the screw rod (14).

4. The special-shaped clamp for tensioning a bridge sling according to claim 3, wherein: the anchor cup (2) is internally provided with a positioning hole (20), a bridge sling (1) is inserted into the positioning hole (20), the top of the bridge sling (1) penetrates through the top of the anchor cup (2) and extends to the upper side of the anchor cup, the bottom of the anchor cup (2) is connected with a connecting screw rod (3), an arc-shaped fork lug (4) is fixedly arranged at the bottom of the connecting screw rod (3), the arc-shaped fork lug (4) is arranged on a bridge beam surface lug plate (5), and the bridge beam surface lug plate (5) is fixedly arranged on a bridge floor.

5. The profiled clamp for bridge sling tensioning according to claim 4, characterized in that: the inner diameter of the positioning hole (20) is larger than the outer diameter of the bridge sling (1).

6. The special-shaped clamp for tensioning the sling of a bridge as claimed in claim 1, wherein: the pull rod (11) penetrates through the arc-shaped clamp (16) and is sequentially connected with a gasket (30) and a positioning nut (17).

7. The profiled clamp for bridge sling tensioning according to claim 6, characterized in that: the arc-shaped clamp (16) comprises a connecting part (160) and mounting parts (161) arranged on two sides of the connecting part (160); the mounting part (161) is fixedly connected with the connecting part (160) and is integrally formed.

8. The profiled clamp for bridge sling tensioning according to claim 7, wherein: connecting portion (160) are the ascending circular arc structure of opening, and connecting portion (160) are laminated with the outside looks adaptation of arc fork ear (4) and bridge beam face otic placode (5) and are connected.

9. The profiled clamp for bridge sling tensioning according to claim 7, wherein: the installation portion (161) is provided with a plurality of installation holes (162), bolts (12) penetrate through the installation holes (162), and positioning nuts (13) are connected to the outer sides of the bolts (12).

10. The profiled clamp for bridge sling tensioning according to claim 6, characterized in that: the top of the pull rod (11) penetrates through the jack (7) and is connected with a pull rod nut (6).