Convenient pre-tightening tool for main cable of suspension bridge

Abstract

The utility model discloses a convenient pre-tightening tool for a main cable of a suspension bridge. The convenient pre-tightening tool comprises two steel clamps, a bolt pin connecting piece, a woven cloth belt and a chain block, the steel clamping piece comprises a semicircular hole-shaped steel plate, stiffening ribs and a lug plate with holes, hanging holes are formed in the upper portion of the semicircular hole-shaped steel plate, and the two ends of a woven cloth belt are arranged in the two hanging holes in a sleeved mode respectively. The stiffening ribs are arranged on the surface of the semicircular hole-shaped steel plate in the vertical direction and connected with the semicircular hole-shaped steel plate in a welded mode. The ear plate with the hole is obliquely welded below the outer side of the semicircular hole-shaped steel plate; two hooks of the chain block are hung in holes of the ear plate with the hole; the bolt pin connecting pieces are located at the upper end and the lower end of the center line of the two steel clamping pieces, and the two steel clamping pieces are clamped together through the bolt pin connecting pieces. The device has the advantages of being simple in structure, convenient to operate, safe and convenient to operate, high in construction speed and good in using effect, can be recycled for multiple times, improves the construction efficiency and reduces the construction cost.

Description

Technical Field

[0001] The utility model relates to the field of cable tightening of suspension bridges, in particular to a convenient pre-tightening tool for the main cable of a self-anchored suspension bridge and a use method thereof. Background Art

[0002] During the construction of a suspension bridge, the erection of the main cable is crucial. The main cable is composed of several cables. After the cable is pulled, the cable needs to be locked tightly so that several cables can be combined to form the main cable. The main cable pre-tightening construction is an important step to control the main cable line shape and ensure that the main cable diameter meets the design requirements. However, the conventional manual pre-tightening of the main cable takes a long time and involves many procedures, which affects the construction quality and delays the construction period. Therefore, the use of a convenient pre-tightening tool can tighten the main cable quickly and conveniently, which is highly practical. Utility Model Content

[0003] The utility model aims to provide a tool for quickly pre-tightening the main cable of a suspension bridge, which can ensure the construction quality of the main cable and improve the construction efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0005] The utility model discloses a convenient pre-tightening tool for the main cable of a suspension bridge, which comprises two steel clamps, a pin connector, a braided cloth belt and a hand winch.

[0006] The steel clamp comprises a semicircular hole-shaped steel plate, a stiffening rib and a perforated ear plate, wherein a hanging hole is arranged above the semicircular hole-shaped steel plate, and the two ends of the woven cloth belt are respectively sleeved in the two hanging holes; the stiffening rib is arranged on the surface of the semicircular hole-shaped steel plate along the up and down directions, and is welded to the semicircular hole-shaped steel plate; the perforated ear plate is obliquely welded to the lower outer side of the semicircular hole-shaped steel plate, and the two hooks of the hand winch are hung in the holes of the perforated ear plate; the pin-bolt connector is located on the inner side of the upper ends of the two steel clamps, and the two steel clamps are hinged together by the pin-bolt connector and can rotate relative to each other.

[0007] The method of using the utility model is as follows: when in use, two steel clamps are straddled on the main cable through the pin connector, and a circular hole of the required diameter for pre-tightening the main cable is formed by tensioning the ear plate with a hole through a hand chain hoist. The braided cloth belt is inserted into the hanging hole to connect the steel clamps for a second time. When tightening the cable, the main cable can be pre-tightened by manually adjusting the hand chain hoist. If drum wire appears during the pre-tightening of the main cable, it can be knocked with a wooden hammer to ensure the quality of the pre-tightening construction of the main cable. After the pre-tightening is completed, the pin connector is removed, and the braided cloth belt connected to the steel clamp straddles the main cable and slides into the next pre-tightening position of the main cable.

[0008] The utility model has the advantages that:

[0009] 1) Through the hanging hole above the semicircular hole steel plate, insert the braided cloth belt into the hanging hole to make the steel clamp for secondary connection. After the pre-tightening is completed, remove the pin connection, and the braided cloth belt connected steel clamp straddles the main cable and slides into the next pre-tightening main cable position. The braided cloth belt will not cause wear to the main cable, which is convenient and fast; the braided cloth belt can also be used as a safety device to prevent the device from falling off due to bolt breakage, ensuring the safety of construction workers.

[0010] 2) The tool of the utility model can be used repeatedly and cyclically, thereby improving construction efficiency and reducing construction costs.

[0011] 3) The utility model tool can make the main cable line smooth and free of wire bulging, thus ensuring the construction quality of the main cable.

[0012] The utility model main cable pre-tightening tool eliminates the cumbersome process of removing the pre-tightening device from the main cable after the main cable pre-tightening is completed in the traditional sense, and reassembling it at the next pre-tightening main cable position, thereby improving the main cable pre-tightening efficiency, enhancing its operability and practicality, and greatly saving manpower and construction costs. It has high superiority in improving work efficiency, ensuring safety and reliability, etc. It also has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the main cable pre-tightening tool of the utility model.

[0014] Figure 2 for Figure 1 BB cross-section of the structure shown.

[0015] Figure 3 for Figure 1 AA cross-section of the structure shown.

[0016] Figure 4 Schematic diagram of the braided cloth belt connected to the steel clamp sliding across the main cable.

[0017] Legend: 1- steel clamp; 2- pin connector; 3- woven cloth belt; 4- hand chain hoist; 5- semicircular hole steel plate; 6- hanging hole; 7- ear plate with hole; 8- stiffening rib; 9- main cable. DETAILED DESCRIPTION

[0018] In order to more clearly understand the features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 4 As described above, the convenient pre-tightening tool for the main cable of a suspension bridge of the utility model comprises two steel clamps 1, a pin connection 2, a braided cloth belt 3 and a hand winch 4.

[0020] The steel clamp 1 includes a semicircular hole-shaped steel plate 5, a stiffening rib 8 and a perforated ear plate 7, wherein a hanging hole 6 is arranged above the semicircular hole-shaped steel plate 5, and the two ends of the woven cloth belt 3 are respectively sleeved in the two hanging holes 6; the stiffening rib 8 is arranged on the surface of the semicircular hole-shaped steel plate 5 along the up and down directions, and is welded to the semicircular hole-shaped steel plate 5; the perforated ear plate 7 is obliquely welded to the lower outer side of the semicircular hole-shaped steel plate 5, and the two hooks of the hand winch 4 are hung in the holes of the perforated ear plate 7; the pin connector 2 is located on the inner side of the upper ends of the two steel clamps 1, and the two steel clamps 1 are hinged together through the pin connector 2 and can rotate relative to each other.

[0021] The method of using the utility model is as follows: when in use, two steel clamps 1 are straddled on the main cable 9 through the pin connector 2, and the hand chain hoist 4 is used to tension the ear plate 7 with the hole to form a circular hole of the required diameter for pre-tightening the main cable 9. The woven cloth belt 3 is inserted into the hanging hole 6 to connect the steel clamp 1 for a second time. When tightening the cable, the hand chain hoist 4 is manually adjusted to pre-tighten the main cable 9. If drum wire appears during the pre-tightening of the main cable 9, it can be knocked with a wooden hammer to ensure the quality of the pre-tightening construction of the main cable 9. After the pre-tightening is completed, the pin connector 2 is removed, and the woven cloth belt 3 is connected to the steel clamp 1 to straddle the main cable 9 and slide into the next pre-tightening position of the main cable 9.

[0022] The actual size of the device of the utility model is determined by the actual situation on the construction site.

[0023] The utility model discloses a device which is convenient to manufacture and easy to use, can be recycled for many times in practical applications, can ensure the construction quality of the main cable pre-tightening, reduces the construction cost, and improves the construction efficiency.

[0024] The utility model is schematically described above with reference to the accompanying drawings, and the description is non-restrictive. Construction technicians in this field can understand and use it. In practical applications, the manufacturing methods of each component in the utility model may undergo certain changes, and other personnel may also make similar designs under its inspiration. It should be pointed out that as long as they do not deviate from the design purpose of the utility model, all obvious changes and similar designs are included in the protection scope of the utility model.

Claims

1. A convenient pre-tightening tool for main cables of a suspension bridge, characterized in that It includes two steel clamps, a pin connector, a woven cloth belt and a hand winch; the steel clamps include a semicircular hole steel plate, a stiffening rib and a perforated ear plate, wherein a hanging hole is arranged above the semicircular hole steel plate, and the two ends of the woven cloth belt are respectively sleeved in the two hanging holes; the stiffening ribs are arranged on the surface of the semicircular hole steel plate along the up and down directions, and are welded to the semicircular hole steel plate; the perforated ear plate is obliquely welded to the lower outer side of the semicircular hole steel plate, and the two hooks of the hand winch are hung in the holes of the perforated ear plate; the pin connector is located on the inner side of the upper ends of the two steel clamps, and the two steel clamps are hinged together by the pin connector and can rotate relative to each other.

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