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Suspended derrick derrick type upside-down lifting system and application method thereof

A hoisting system and pole holding technology, which is applied in the field of suspension pole-mounted derrick type flip-chip hoisting system, can solve the problems of difficult management and control, safety risks, cumbersome construction procedures, etc., and achieve a high safety factor, fast assembly, and easy identification. Effect

Pending Publication Date: 2021-05-25
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high risk of operation and the difficulty of control, the formal installation of the pole has been strictly prohibited; for the 500kV and UHV projects with a large foundation root, the inverted installation needs to be assembled with a small inverted herringbone pole first. The upper section of the pole, and then use the upper section of the pole to erect the iron tower to a certain height, and then use the flip-up lifting method to connect the remaining sections of the pole to the lower part of the pole until all the assembly is completed. However, this method is caused by cumbersome construction procedures. Builders are unwilling to adopt
As a result, the construction workers took the risk of using the formal installation method to assemble the poles, posing a safety risk

Method used

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  • Suspended derrick derrick type upside-down lifting system and application method thereof
  • Suspended derrick derrick type upside-down lifting system and application method thereof
  • Suspended derrick derrick type upside-down lifting system and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment one, combine Figure 1 to Figure 6 It can be seen that the suspended pole-holding derrick type inversion lifting system disclosed in this embodiment includes a base 1 , a derrick 2 , a lifting frame 3 , an oil cylinder 4 , guide rails 5 , a horizontal bracket 6 , and a stop ring 7 .

[0046] The base 1 is a split-type combinable structure, including a middle seat 11 and side seats 12 connected symmetrically on both sides. The side seats 12 are detachably connected by fasteners, and the four corners of the two side seats 12 are symmetrically connected with height-adjustable legs 13 . The installation level of the base can be adjusted by the outriggers.

[0047]The derrick 2 includes a plurality of unit frames, and each unit frame includes two parallel and facing main pieces 21 and a connecting piece 22 detachably connected between the two main pieces, and adjacent unit frames are detachably connected by fasteners.

[0048] The main piece 21 includes two upri...

Embodiment 2

[0073] Embodiment two, the difference between this embodiment and embodiment one is that the power unit of its jacking device adopts a winch mill, a tackle HC is added on the square frame of the lifting frame, a tackle is added on the square frame of the limit waist ring, and a tackle is also added on the base. Set up a block, the block on the lifting frame is a lifting block, the block on the limit waist ring and the block on the base are steering blocks, and the carrying capacity of the blocks is selected as required. The routing of the lifting rope is as follows: Figure 7 As shown, other structures and operations of this embodiment are the same as those of Embodiment 1.

[0074] In this embodiment, when the pole is suspended and upside down, the winch works, and the hoisting rope pulls the lifting frame upwards, and the lifting frame clamps the pole segment to lift, and after the lift is in place, it is supported by the horizontal bracket, and then the winch works in rever...

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PUM

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Abstract

The system comprises a base, a derrick, a lifting device and a limiting waist ring, the derrick is of a detachable assembled structure, the lower end of the derrick is detachably connected with the base, the lifting device comprises a power device and a lifting frame, and the lifting frame and the base are arranged on the lower portion of an inner cavity of the derrick in parallel; the lifting frame clamps the derrick, the power device provides reciprocating power for the lifting frame to lift the derrick, the limiting waist ring is horizontally fixed to the top of an inner cavity of the derrick, and the lifting stability of the derrick is guaranteed. The hoisting frame is designed into a derrick with a compact structure, the size of an inner cavity of the hoisting frame is only slightly larger than the plane size of a holding pole, modular factory manufacturing can be carried out, the weight of a single module can be controlled within 100 kg, and the hoisting frame is suitable for manual carrying in a mountainous area, convenient to recognize and rapid in field assembly. The lifting frame can repeatedly lift the derrick sections upwards until suspension inversion of the derrick sections is completed, and the safety coefficient is high as long as the upper derrick section and the lower derrick section are connected and fixed through bolts and nuts by means of a derrick.

Description

technical field [0001] The invention relates to the field of erection and construction of iron towers in power transmission line engineering, in particular to a suspended pole-holding derrick type flip-chip lifting system and an application method thereof. Background technique [0002] At present, the erection of towers in transmission line projects adopts the method of erecting towers with suspended poles, which is the most widely used and most technically proficient method of erecting towers. [0003] Due to the high risk of operation and the difficulty of control, the formal installation of the pole has been strictly prohibited; for the 500kV and UHV projects with a large foundation root, the inverted installation needs to be assembled with a small inverted herringbone pole first. The upper section of the pole, and then use the upper section of the pole to erect the iron tower to a certain height, and then use the flip-up lifting method to connect the remaining sections o...

Claims

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Application Information

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IPC IPC(8): E04H12/34
CPCE04H12/34
Inventor 郭达明张恒武周卓江雷邹永兴刘中普张卫民葛海平王艳华邹同华
Owner STATE GRID HUNAN ELECTRIC POWER
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