CN216108120U

CN216108120U - Portable bridge tensioning equipment mounting and dismounting device

Info

Publication number: CN216108120U
Application number: CN202122588074.XU
Authority: CN
Inventors: 唐高华; 任利军; 金鑫; 肖丹阳; 张国金
Original assignee: China Construction Civil Engineering Co Ltd
Current assignee: China Construction Civil Engineering Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-22
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a convenient bridge tensioning equipment mounting and dismounting device which comprises a main body frame, an extension beam (2), a fixed end (3), a fixed lifting piece (4), a tensioning end (5), a tensioning lifting piece (6) and a jack (9); the main body framework is arranged at the top of the bridge beam end (7), one end of the extension beam is connected to the top of the front end of the main body framework, and the other end of the extension beam extends to the position above the outer side of the bridge beam end; the fixed end is arranged at the upper part of the rear end of the main body frame, so that the fixed lifting piece can be connected between the top of the bridge beam end and the fixed end; the two tensioning ends are movably mounted at the top end of the front portion of the main body frame and the front portion of the extension beam respectively, the jack is arranged at the front end of the beam end of the bridge, so that the two tensioning lifting pieces can be connected between the two tensioning ends and two connection points of the jack respectively, and the prestress tensioning equipment is arranged on the jack in a penetrating mode. The utility model can assist the mounting and dismounting operation of prestress tension equipment such as steel strands and the like through the lever type main body framework.

Description

Portable bridge tensioning equipment mounting and dismounting device

Technical Field

The utility model relates to bridge construction auxiliary equipment, in particular to a convenient bridge tensioning equipment mounting and dismounting device.

Background

The bridge spans mountain stream, unfavorable geology or satisfies other traffic needs and erect make the building of passing more convenient, in current construction process, the application of post-tensioning prestressing force bridge is more and more extensive. At present, the bridge steel strand is usually tensioned by using a jack for auxiliary construction, but because the field of the bridge beam end is narrow and small, or under the condition that no operation platform is used for assistance, the tensioning construction space of the steel strand is limited, the operation time is long, the mud jacking interval time is long, the construction efficiency and the construction quality are influenced, and the construction safety is low.

Disclosure of Invention

The utility model aims to provide a convenient and fast mounting and dismounting device for bridge tensioning equipment, which can assist mounting and dismounting operations of prestress tensioning equipment such as steel strands and the like through a lever type main body framework.

The utility model is realized by the following steps:

a portable bridge tensioning equipment mounting and dismounting device comprises a main body framework, an extension beam, a fixed end, a fixed lifting piece, a tensioning end, a tensioning lifting piece and a jack; the main body frame is arranged at the top of the beam end of the bridge, one end of the extension beam is connected to the top of the front end of the main body frame, and the other end of the extension beam extends to the position above the outer side of the beam end of the bridge; the fixed end is arranged at the upper part of the rear end of the main body frame, so that the fixed lifting piece can be connected between the top of the bridge beam end and the fixed end; the two tensioning ends are movably mounted at the top end of the front portion of the main body frame and the front portion of the extension beam respectively, the jack is arranged at the front end of the beam end of the bridge, so that the two tensioning lifting pieces can be connected between the two tensioning ends and two connection points of the jack respectively, and the prestress tensioning equipment is arranged on the jack in a penetrating mode.

The main body frame comprises a tripod, a connecting cross rod and a top beam; the tops of the pair of tripods are connected through a top beam, and the middle parts of the tripods are connected through a plurality of connecting cross rods to form a main body frame of a three-dimensional structure; one of the tension ends is movably arranged on the top beam.

The bottom both sides of tripod all be equipped with and remove the wheel, constitute and install and tear platform truck structure open.

The fixed lifting piece is positioned behind the tripod at the rear end of the main body frame, so that a right-angled triangle structure is formed between the tripod at the rear end of the main body frame and the fixed lifting piece as well as between the tripod and the bridge beam end.

A quadrilateral structure is formed among the front end of the top beam, the extension beam, the two tensioning lifting pieces and the jack.

And a limiting plate is arranged at the front end of the extension beam.

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

1. the utility model can assist the mounting and dismounting operation of prestress tensioning equipment such as steel strands and the like through the lever-type main body frame, shorten the tensioning time and the mud jacking interval time, improve the mounting and dismounting operation efficiency, reduce the loss of prestress, and ensure the construction quality and the structure safety.

2. The main body frame has the advantages of simple structure, small volume, convenient movement, convenient operation, strong adaptability, high practicability, easy material taking and manufacturing, low cost and the like, and can meet the operation requirements under the construction conditions of narrow bridge beam-end sites or no operation platform.

Drawings

FIG. 1 is a front view of the portable bridge tensioning device of the present invention in use;

fig. 2 is a side view of the portable bridge tensioning device mounting and dismounting device of the utility model.

In the figure, 11 tripods, 12 connecting cross bars, 13 top beams, 14 moving wheels, 2 extending beams, 21 limiting plates, 3 fixed ends, 4 fixed lifting pieces, 5 tensioning ends, 6 tensioning lifting pieces, 7 bridge beam ends and 8 steel strands.

Detailed Description

The utility model is further described with reference to the following figures and specific examples.

Referring to fig. 1 and 2, a portable bridge tensioning device mounting and dismounting device comprises a main body frame, an extension beam 2, a fixed end 3, a fixed lifting piece 4, a tensioning end 5, a tensioning lifting piece 6 and a jack 9; the main body frame is arranged at the top of the bridge beam end 7, one end of the extension beam 2 is connected to the top of the front end of the main body frame, and the other end of the extension beam 2 extends to the position above the outer side of the bridge beam end 7; the fixed end 3 is arranged at the upper part of the rear end of the main body frame, so that the fixed lifting piece 4 can be connected between the top of the bridge beam end 7 and the fixed end 3; the two stretching ends 5 are movably arranged at the top end of the front part of the main body frame and the front part of the extension beam 2 respectively, the jack 9 is arranged at the front end of the bridge beam end 7, so that the two stretching lifting pieces 6 can be connected between two connecting points of the two stretching ends 5 and the jack 9 respectively, and the prestress stretching equipment such as a steel strand 8 is arranged on the jack 9 in a penetrating mode. The right end shown in the figure 1 is used as the front end, the left end shown in the figure 1 is used as the rear end, the main body frame plays a bearing role at the bridge beam end 7, the rear end of the main body frame is fixed on the bridge beam end 7 through the fixed end 3 and the fixed lifting piece 4, and the jack 9 is lifted in front of the bridge beam end 7 through the tensioning end 5 and the tensioning lifting piece 6. Because two tensioning end 5 set up respectively in the terminal surface front side and the rear side of bridge beam end 7, simultaneously because tensioning end 5 and stiff end 3 are located the front and back end of main body frame respectively, utilize lever principle, guaranteed the stability in the tensioning process. Preferably, the fixed lifting part 4 and the tensioning lifting part 6 can adopt a chain block or an electric block in the building engineering, the number of the fixed ends 3 and the tensioning ends 5 can be adjusted according to the actual requirement, and correspondingly, the number of the fixed lifting part 4 and the tensioning lifting part 6 is configured according to the number of the fixed ends 3 and the tensioning ends 5.

The main body frame comprises a tripod 11, a connecting cross rod 12 and a top beam 13; the tops of a pair of tripods 11 are connected through a top beam 13, and the middle parts of the tripods 11 are connected through a plurality of connecting cross rods 12 to form a main body frame with a three-dimensional structure; one of the tension ends 5 is movably mounted on the top beam 13. The structural stability of the main body frame is high, the weight of the steel strand 8 can be effectively borne, and the stability in the tensioning process is ensured. Preferably, the tripod 11 and the connecting cross rod 12 can be made of steel pipes, the top beam 13 can be made of I-shaped steel, the main body frame is made of the I-shaped steel through welding, and the sizes of the steel pipes and the I-shaped steel can be cut according to actual construction space and bearing requirements. The fixed end 3 may be made of a steel pipe and welded to the tripod 11 at the rear end, and the length of the fixed end 3 may be determined according to the height at which it is installed and the size of the tripod 11.

Moving wheels 14 are arranged on two sides of the bottom of the tripod 11, and an installing and detaching trolley structure is formed. Preferably, the movable wheel 14 can be a universal wheel with a brake pedal, so that the main body frame can be conveniently moved and adjusted on the beam body, and can be positioned through the brake pedal after being moved and adjusted in place, and the main body frame is prevented from being accidentally moved in the process of tensioning the steel strand 8.

The fixed lifting piece 4 is positioned behind a tripod 11 at the rear end of the main body frame, so that a right-angled triangle structure is formed between the tripod 11 at the rear end of the main body frame, the fixed lifting piece 4 and the bridge beam end 7. The structure stability is high, and the reliable fixation of the rear end of the main body frame can be ensured.

A quadrilateral structure is formed among the front end of the top beam 13, the extension beam 2, the two tensioning lifting pieces 6 and the jack 9. The structure stability is high, and the adjustment safety of the two tensioning lifting pieces 6 along with the tensioning operation of the jack 9 can be ensured.

The front end of the extension beam 2 is provided with a limiting plate 21, which has a limiting effect on the arrangement position of the utility model and can prevent the collision between the front end of the extension beam 2 and the building structure.

The using method of the utility model is as follows:

1. the mounting and dismounting trolley structure is pushed to the tensioning position of the bridge beam end 7 through the moving wheels 14, and the brake and stop pedals are pressed tightly, so that the mounting and dismounting trolley structure is positioned.

2. Hang first hand block on the stiff end 3 of installing and tearing open platform truck structure rear end with the one end couple of fixed hoisting member 4 promptly, other end couple is connected on the top surface of bridge beam-ends 7, the couple accessible of hand block is reserved modes such as U shaped steel muscle hole and is realized connecting, taut hand block after the installation, hand block, form the right triangle structure between bridge beam-ends 7 and the tripod of installing and tearing open platform truck structure rear end, ensure to install and tear open reliable fixed between platform truck structure rear end through fixed hoisting member 4 and the bridge beam-ends 7.

3. Two stretch-draw ends 5 accessible forms such as spout are installed on back timber 13 and extension roof beam 2, slide two stretch-draw ends 5 according to the weight of steel strand wires 8 and stretch-draw requirement, adjust the position and the interval of two stretch-draw ends 5, adjust fixing pieces such as accessible bolts after targetting in place and lock on back timber 13 and extension roof beam 2.

4. A second hand block, the tension and lift member 6, is connected between the tension end 5 of the top beam 13 and the connection point of the jack 9 near the beam end 7 of the bridge.

5. A third hand block, i.e. a tension lifting member 6, is connected between the tension end 5 of the top beam 13 and the connection point of the jack 9 far from the beam end 7 of the bridge. The two tension lifting pieces 6, the front part of the top beam 13, the extension beam 2 and the jack 9 form a quadrilateral structure.

6. And tensioning the second hand hoist and the third hand hoist, namely the tensioning lifting piece 6, adjusting the position of the jack 9, keeping the jack 9 basically horizontal and adapting to the height of the steel strand 8, and penetrating the steel strand 8 into the jack 9.

7. And pulling the hand chain of the second hand hoist and the hand chain of the third hand hoist to make the jack 9 lean against the working anchorage.

8. In the jacking process of the jack 9, the chain pulling chains of the second hand hoist and the third hand hoist are synchronously pulled, the tightness of the chain pulling chains is adjusted, the jack 9 is prevented from being subjected to unfavorable constraint force, and therefore the steel strand 8 is tensioned.

The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a portable bridge stretch-draw equipment ann dismouting is characterized by: comprises a main body frame, an extension beam (2), a fixed end (3), a fixed lifting piece (4), a tensioning end (5), a tensioning lifting piece (6) and a jack (9); the main body framework is arranged at the top of the bridge beam end (7), one end of the extension beam (2) is connected to the top of the front end of the main body framework, and the other end of the extension beam (2) extends to the position above the outer side of the bridge beam end (7); the fixed end (3) is arranged at the upper part of the rear end of the main body frame, so that the fixed lifting piece (4) can be connected between the top of the bridge beam end (7) and the fixed end (3); two stretch-draw ends (5) are respectively movably mounted at the front top end of the main body frame and the front part of the extension beam (2), a jack (9) is arranged at the front end of the bridge beam end (7), so that two stretch-draw lifting pieces (6) can be respectively connected between two connection points of the two stretch-draw ends (5) and the jack (9), and prestress stretch-draw equipment is arranged on the jack (9) in a penetrating manner.

2. The portable bridge tensioning device mounting and dismounting device of claim 1, wherein: the main body frame comprises a tripod (11), a connecting cross rod (12) and a top beam (13); the tops of the pair of tripods (11) are connected through a top beam (13), and the middle parts of the pair of tripods (11) are connected through a plurality of connecting cross rods (12) to form a main body frame with a three-dimensional structure; one of the tension ends (5) is movably arranged on the top beam (13).

3. The portable bridge tensioning device mounting and dismounting device of claim 2, wherein: both sides of the bottom of the tripod (11) are provided with moving wheels (14) to form an installing and detaching trolley structure.

4. The portable bridge tensioning device mounting and dismounting device of claim 1, wherein: the fixed lifting piece (4) is positioned behind a tripod (11) at the rear end of the main body frame, so that a right-angled triangle structure is formed between the tripod (11) at the rear end of the main body frame, the fixed lifting piece (4) and the bridge beam end (7).

5. The portable bridge tensioning device mounting and dismounting device of claim 2, wherein: a quadrilateral structure is formed among the front end of the top beam (13), the extension beam (2), the two tensioning lifting pieces (6) and the jack (9).

6. The portable bridge tensioning device mounting and dismounting device of claim 1 or 5, wherein: the front end of the extension beam (2) is provided with a limiting plate (21).