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Cable-crossing crane of suspension bridge as well as application and using method of cable-crossing crane

A suspension bridge and span cable technology, applied in suspension bridges, cable cranes, bridges, etc., can solve the problems of large deformation of stiffening beams and very high requirements for hoisting capacity of hoisting units

Inactive Publication Date: 2020-09-15
CCCC SECOND HIGHWAY ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a cable-span crane for a suspension bridge and its application and use method. , the lifting capacity of the lifting unit (the tonnage of the jack) is very high, and the deformation of the stiffening beam is relatively large during the lifting process

Method used

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  • Cable-crossing crane of suspension bridge as well as application and using method of cable-crossing crane
  • Cable-crossing crane of suspension bridge as well as application and using method of cable-crossing crane
  • Cable-crossing crane of suspension bridge as well as application and using method of cable-crossing crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, a cable-span crane for a suspension bridge includes a hoisting unit 1, a hydraulic control unit 2, and a beam 3. The number of hoisting units 1 is 3 sets, and the 3 sets of hoisting units 1 are sequentially connected through the beam 3 from left to right. The control unit 2 is connected with the lifting unit 1 in the middle. The cable-span crane of the suspension bridge is provided with a set of lifting units 1 at the left, middle and right positions of the three main cables (ie, the side main cable 41 and the middle main cable 42), and the middle lifting unit 1 shares the lifting units on both sides. 1, and the deformation of the stiffening beam 4 is also within the controllable range. This structure has high practical significance and research value. The suspension bridge laid a certain foundation for construction.

Embodiment 2

[0026] like figure 2 As shown, on the basis of Embodiment 1, the hoisting unit 1 includes 2 hoisting units, a sling 14 and a support leg 15, the 2 hoisting units are symmetrically connected left and right, and the middle lower part of the 2 hoisting units is connected to the support leg 15, The bottoms of the two hoisting units are connected to the spreader 14. The structure is simple, stable and balanced in force.

[0027] Each lifting unit includes a wire reel 11 , a lifting device 12 and a wire rope 13 , the wire reel 11 is wound with a wire rope 13 , and one end of the wire rope 13 passes through the lifting device 12 to connect to a hanger 14 . The working principle of the hoisting unit 1 is as follows: the hoisting unit is supported on the main cable through the supporting legs 15. When the stiffening beam 4 needs to be hoisted, the steel wire drum 11 lowers the steel wire rope 13, and the sling 14 moves to the position of the stiffening beam 4, and the sling 14 and th...

Embodiment 3

[0029] like image 3 As shown, on the basis of Embodiment 2, the hydraulic control unit 2 includes an oil discharge valve 21, an oil supply pump 22, a signal collector 23, and a safety switch 24, and the lifting device 12 is connected to the signal collector 23 and the oil discharge valve respectively. 21 and the oil supply pump 22, the oil unloading valve 21 is connected with the safety switch 24. Three sets of hoisting units 1 are connected as a whole by a beam 3. When hoisting the stiffening girder 4 of the suspension bridge, the above-mentioned spanning crane is supported on the three main cables (side main cable 41 and middle main cable 42). When the above three sets of hoisting units are stressed, in order to prevent the deformation of the 3 mid-span of the beam from being too large (the deformation limit can be obtained through relevant specifications) and at the same time to share the force of the hoisting units on the main cable on the side (this can be done in a cert...

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Abstract

The invention belongs to the technical field of bridge engineering. The invention relates to a cable-crossing crane of a suspension bridge as well as application and a using method of the cable-crossing crane. The cable-crossing crane comprises hoisting units, a hydraulic control unit and a cross beam; the number of the hoisting units is three; the three sets of hoisting units are sequentially connected through the cross beam from left to right; the hydraulic control unit is connected with the middle hoisting unit. According to a three-main-cable suspension bridge in the prior art, during thehoisting construction of a stiffening beam, if a two-supporting-point hoisting mode of a conventional cable-crossing crane is adopted, the requirement on the hoisting capacity of a hoisting unit is very high, and the stiffening beam is largely deformed in the hoisting process. With the cable-crossing crane of the suspension bridge as well the application and using method of the cable-crossing crane adopted, the above problem in the prior art can be solved. According to the cable-crossing crane of the suspension bridge as well the application and using method of the cable-crossing crane, one hoisting unit is arranged at each of the left position, the middle position and the right position, the hoisting unit in the middle shares loads of the hoisting units on the two sides, and therefore, the deformation of the stiffening beam is within a controllable range. The cable-crossing crane has high practical significance and research value.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a cable-span crane for a suspension bridge and its application and use method. Background technique [0002] With the rapid development of my country's economy, more and more long-span bridges are being built. At present, there are four suspension bridges over 2000m in planning in China. Due to my country's national conditions, when designing these suspension bridges over 2000m, the lanes are usually It is designed to have 12 lanes or more, which leads to a very large weight and width of the main girder, which must withstand the wide and heavy stiffening beam of the suspension bridge. If the two main cables of the conventional suspension bridge are used, the diameter of the main cable is very large. Construction was very difficult. Therefore, the main cable can be set in the form of three main cables (this is also one of the main forms of the main cable layo...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D21/06E01D11/02B66C21/00B66C13/20B66C13/08
CPCE01D21/00E01D21/06E01D11/02B66C21/00B66C13/20B66C13/08
Inventor 苏洋金仓赵廷建侯润锋廖立勋
Owner CCCC SECOND HIGHWAY ENG CO LTD
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