Three-line tower crane

Abstract

The invention discloses a three-cable-group tower crane which comprises a bottom frame, wherein a left tail frame and a right tail frame are hinged at the rear end of the bottom frame; a left rope disc and a right rope disc are mounted on the left tail frame and the right tail frame respectively, a power device is arranged at the rear part of the bottom frame, a winch is arranged in the middle of the bottom frame, and double-drum devices are arranged on the left and right sides of the front part of the bottom frame; the two double-drum devices are same in structure, each two-drum device comprises a double-drum main beam and a double-drum auxiliary beam which are mounted on the bottom frame at an interval in a left-right manner, two drums are mounted between each double-drum main beam and each double-drum auxiliary beam in parallel at an interval in a front-rear manner, and the at least one drum is driven by a hydraulic motor speed reduction device; a drag lever is connected to the front end of the bottom frame, and traveling wheels are downwards arranged on the left side and right side in the middle of the bottom frame respectively. According to the tower crane, a tower material can be lifted, a pole body can be lifted and adjusted, all power for lifting the tower material can be subjected to centralized control, the information exchange among lifting operators can be reduced, and the operation is convenient; meanwhile, the lifting operation is stable, the impact resistance is good, the safety is high, and the transfer operation is convenient.

Description

technical field [0001] The invention relates to the technical field of erection and construction of power transmission line towers. Background technique [0002] In recent years, with the continuous development of power grid construction, the requirements for the construction efficiency of transmission line poles and towers are getting higher and higher, and the traditional mechanical winch can no longer meet the construction requirements. [0003] At present, the hoisting equipment used in the construction of towers in China is mainly a motorized winch. This kind of winch is mostly a single set of drums, and mechanical transmission is used as the power. The impact and vibration are large, the performance of the equipment is not stable enough, and the power is small, and the traction speed is relatively fast. Slow, low construction efficiency, can not meet the requirements of UHV transmission line tower material hoisting. [0004] The defective in prior art has: [0005] (...

AI Technical Summary

Problems solved by technology

[0005] (1) Multiple winch mills are required to cooperate in the construction of the tower, and the information exchange is frequent and the construction is difficult;

[0006] (2) Construction winch mills are mostly single-roller structures, with small rated loads, low speeds, and low construction efficiency;

[0007] (3) Mostly mechanical transmission, poor impact resistance

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