Device for installing prestressed steel-concrete composite beam tensioning equipment

Abstract

The utility model discloses a device for installing prestress steel-concrete composite beam tensioning equipment. The device comprises a winch, a winch support, a steel wire rope, a sliding device and an adjustable supporting structure. The winch is installed on the bridge deck through a winch support, and a reserved hole used for allowing a steel wire rope connected with the winch to pass through is formed in the bridge deck below the winch support. The lower ends of the steel wire ropes are connected with prestress tension equipment; the sliding device is arranged below the bridge deck slab; the sliding device comprises a U-shaped pipe assembly, a sliding assembly arranged at the bottom of the U-shaped pipe assembly and a sliding steel plate which is arranged on the sliding assembly and can slide along the sliding assembly. The adjustable supporting structure comprises a first base plate arranged on the sliding steel plate, a rotating screw fixed to the first base plate and a second base plate fixed to the top of the rotating screw. The device can be accurately installed in place, the reliability is good, the installation and detachment process is safe and controllable, and the construction efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a device for installing tensioning equipment of a prestressed steel-concrete composite beam. Background Art

[0002] During bridge construction, when the prestressed steel-concrete composite beam is cast in place, the prestressing of the bridge deck is difficult to construct at the bottom of the slab due to the small spacing between the steel strands and the lack of a suitable location for a manhole. In addition, the tensioning equipment is heavy and difficult to install at the construction location. How to complete the prestressing construction at the bottom of the high-altitude slab and ensure the construction quality, the installation and removal of the integral tensioning and prestressing jacks have become the difficulties and key points of the construction.

[0003] In order to ensure the quality of prestressing and the safety of personnel, the utility model provides a device for installing prestressing steel-concrete composite beam tensioning equipment. Summary of the invention

[0004] The utility model aims to provide a device for installing tensioning equipment of prestressed steel-concrete composite beams, so as to solve the problems of great construction difficulty and difficulty in installing the tensioning equipment at the construction position in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for installing a prestressed steel-concrete composite beam tensioning device, comprising: a winch, a winch bracket, a steel wire rope, a sliding device and an adjustable supporting structure;

[0006] The winch is installed on the bridge deck through the winch bracket. A reserved hole is provided on the bridge deck below the winch bracket for the steel wire rope connected to the winch to pass through. The lower end of the steel wire rope is connected to the prestressing tensioning device.

[0007] The sliding device is arranged below the bridge deck; the sliding device comprises a U-shaped tube assembly, a sliding assembly arranged at the bottom of the U-shaped tube assembly, and a sliding steel plate arranged on the sliding assembly and capable of sliding along the sliding assembly;

[0008] The adjustable support structure includes a No. 1 pad set on the sliding steel plate, a rotating screw fixed on the No. 1 pad and a No. 2 pad fixed on the top of the rotating screw; the adjustable support structure is provided with multiple groups, a supporting base plate is provided above it, and two supporting vertical plates are provided on the supporting base plate for supporting and fixing the prestressed tensioning equipment.

[0009] Preferably, the U-shaped tube assembly is composed of a plurality of U-shaped tubes, both ends of which are connected and fixed to the bridge deck; the sliding assembly is composed of a plurality of inverted U-shaped rectangular tubes, and the sliding steel plates are arranged on two adjacent rectangular tubes.

[0010] Preferably, a steel plate is further provided below the adjustable supporting structure.

[0011] Preferably, the number of the adjustable support structures is at least three groups.

[0012] The utility model can realize movement in the front, back, left, right, up and down directions by arranging sliding components, sliding steel plates and adjustable supporting structures, accurately install the equipment in place, has good reliability, and the installation and removal process is safe and controllable, and can efficiently complete the construction task. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 2 for Figure 1 AA section view;

[0015] Figure 3 for Figure 1 BB section view;

[0016] Figure 4 for Figure 1 CC section view of ;

[0017] In the figure: 1- winch, 2- winch bracket, 3- bridge deck, 4- steel wire rope, 5- reserved hole, 6- prestressed tensioning equipment, 7- sliding device, 71- U-tube assembly, 72- sliding assembly, 73- sliding steel plate, 8- adjustable supporting structure, 81- No. 1 pad, 82- rotating screw, 83- No. 2 pad, 84- supporting bottom plate, 85- supporting vertical plate, 9- steel plate, a- prestressed anchor cable, b- steel structure bridge. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are now described with reference to the accompanying drawings. It will be understood by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific technology, connection relationship or condition is indicated in the embodiments, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not indicated, they are all conventional products that can be purchased.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0020] Combination Figure 1-Figure 4As shown, the utility model provides a device for installing a prestressed steel-concrete composite beam tensioning device, comprising: a winch 1, a winch bracket 2, a steel wire rope 4, a sliding device 7 and an adjustable supporting structure 8;

[0021] The winch 1 is installed on the bridge deck 3 through the winch bracket 2. A reserved hole 5 is provided on the bridge deck 3 below the winch bracket 2 for passing a steel wire rope 4 connected to the winch 1. The lower end of the steel wire rope 4 is connected to a prestressed tensioning device 6.

[0022] The sliding device 7 is arranged below the bridge deck 3 and cooperates with the prestressing tensioning device 6; the sliding device 7 comprises a U-shaped tube assembly 71, a sliding assembly 72 arranged at the bottom of the U-shaped tube assembly 71, and a sliding steel plate 73 arranged on the sliding assembly 72 and capable of sliding along the sliding assembly 72;

[0023] The adjustable support structure 8 includes a No. 1 pad 81 arranged on the sliding steel plate 73, a retractable rotating screw 82 fixed on the No. 1 pad 81 and a No. 2 pad 83 fixed on the top of the rotating screw 82; the rotating screw 82 is composed of an external threaded tube and an internal threaded tube cooperating with the external threaded tube; the adjustable support structure 8 is provided with four groups, and a support base plate 84 is provided above the four groups of adjustable support structures 8, and two support vertical plates 85 for supporting and fixing the prestressed tensioning equipment 6 are provided on the support base plate 84; a steel plate 9 is also provided under the adjustable support structure 8, and the steel plate 9 serves as a platform for workers to construct and is connected between two steel structure bridges.

[0024] Specifically, the U-shaped tube assembly 71 is composed of multiple U-shaped tubes, and both ends of the U-shaped tube are connected and fixed to the bridge deck 3 (the two ends of the U-shaped tube are bent outward and connected to the bridge deck through the bends); the bottom of the U-shaped tube is horizontal, and the sliding assembly 72 is perpendicular to it; the sliding assembly 72 is composed of multiple inverted U-shaped rectangular tubes, and the inverted U-shaped rectangular tube is clamped on the horizontal bottom of the U-shaped tube assembly 71; when in use, adjust the spacing between the rectangular tubes, and then set the sliding steel plate 73 on the two adjacent rectangular tubes with the adjusted spacing.

[0025] The installation method of the utility model is as follows:

[0026] Prestressed steel strands need to be tensioned inside the prestressed steel-concrete composite beam. The tensioning work is completed at the bottom of the bridge slab. Holes for wire ropes are reserved above the original bridge deck, and a winch bracket is set above the bridge deck to achieve vertical lifting of the tensioning equipment. After the equipment is lifted above the U-tube assembly, the workers quickly complete the installation of the U-tube assembly and the sliding assembly and make a reliable connection. After the installation is completed, a sliding steel plate is embedded in the sliding assembly, and then an adjustable support structure is installed on the sliding steel plate (the No. 1 pad and the No. 2 pad at both ends of the retractable rotating screw are welded to the rotating screw in advance). After the above structures are reliably connected, the support bottom plate and the support vertical plate are installed. After the erection is stable, the retractable rotating screw is adjusted so that the utility model reaches the designed installation height of the equipment. The winch lowers the tensioning equipment through the wire rope and fixes it on the supporting vertical plate. The sliding assembly, the sliding steel plate and the adjustable support structure are adjusted to put the tensioning equipment in place to meet the actual installation requirements.

[0027] By setting a sliding assembly, a sliding steel plate and an adjustable support structure, the utility model can realize movement in the front, back, left, right, up and down directions; when the utility model is unloaded, it is mainly moved and adjusted into place manually, and a jack is used to assist in movement when manual displacement is not possible; after the tensioning operation is completed, the sliding assembly, the sliding steel plate and the adjustable support structure can be adjusted to push the tensioning equipment to the lifting position to realize the disassembly of the tensioning equipment. The utility model device can effectively ensure the quality of prestressed tensioning, improve production efficiency, and reduce the probability of safety accidents, and has a high practical prospect.

[0028] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for installing a prestressed steel-concrete composite beam tensioning device, characterized in that: include: A winch (1), a winch bracket (2), a steel wire rope (4), a sliding device (7), and an adjustable supporting structure (8); wherein: The winch (1) is installed on the bridge deck (3) via a winch bracket (2); a reserved hole (5) is provided on the bridge deck (3) below the winch bracket (2) for allowing a steel wire rope (4) connected to the winch (1) to pass through; the lower end of the steel wire rope (4) is connected to a prestressing tensioning device (6); The sliding device (7) is arranged below the bridge deck (3); the sliding device (7) comprises a U-shaped tube assembly (71), a sliding assembly (72) arranged at the bottom of the U-shaped tube assembly (71), and a sliding steel plate (73) arranged on the sliding assembly (72) and capable of sliding along the sliding assembly (72); The adjustable support structure (8) comprises a first pad (81) arranged on a sliding steel plate (73), a rotating screw (82) fixed on the first pad (81), and a second pad (83) fixed on the top of the rotating screw (82); the adjustable support structure (8) is provided with a plurality of groups, a supporting base plate (84) is provided above the supporting base plate (84), and two supporting vertical plates (85) are provided on the supporting base plate (84) for supporting and fixing the prestressed tensioning device (6).

2. The device for installing a prestressed steel-concrete composite beam tensioning device according to claim 1, characterized in that: The U-shaped tube assembly (71) is composed of a plurality of U-shaped tubes, and both ends of the U-shaped tubes are connected and fixed to the bridge deck (3); the sliding assembly (72) is composed of a plurality of inverted U-shaped rectangular tubes, and the sliding steel plates (73) are arranged on two adjacent rectangular tubes.

3. The device for installing a prestressed steel-concrete composite beam tensioning device according to claim 1, characterized in that: A steel plate (9) is also provided below the adjustable supporting structure (8).

4. The device for installing a prestressed steel-concrete composite beam tensioning device according to claim 1, characterized in that: The number of the adjustable support structures (8) is at least three groups.

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