Winch pressurizing servo system and control method

Abstract

The invention discloses a winch pressurizing servo system and a control method. The winch pressurizing servo system comprises a pressure pump, a pressurizing winch, a working winch, a pressurizing winch multi-stage overflow valve and a working winch multi-stage overflow valve. The pressurizing winch multi-stage overflow valve comprises a low-pressure floating electromagnetic valve Y7 and a high-pressure floating electromagnetic valve Y6, wherein the high-pressure floating electromagnetic valve Y6 enables a pressure difference to be generated between an opening B and an opening A of the pressurizing winch. The working winch multi-stage overflow valve comprises a low-pressure floating electromagnetic valve Y9 and a high-pressure floating electromagnetic valve Y8, wherein the high-pressure floating electromagnetic valve Y8 enables a pressure difference to be generated between an opening B and an opening A of the working winch. By the adoption of the winch pressurizing servo system, an operating system of the working winch and an operating system of the pressurizing winch are combined to form one operating system, the cost is saved, and the operation process is simplified.

Description

technical field [0001] The invention relates to a hoisting pressurization follow-up system and a control method. Background technique [0002] During the construction of large-scale piling equipment, when drilling in harder rock formations, it is necessary to increase the downward pressure on the drilling tool one by one to increase the drilling speed. [0003] There are three pressurization methods currently in use: [0004] 1. The drilling tool is pressurized by its own gravity; [0005] 2. The pressurized cylinder is pressurized; [0006] 3. Pressurize the winch to pressurize. [0007] The winch pressurization is the most widely used pressurization method for large-scale pile construction equipment due to its long pressurization stroke and large pressurization force. Due to the difference in the way the power head drives the drill pipe, the pressurization structure of the piling equipment is also different. For the case where the power head and the drill pipe are rigi...

AI Technical Summary

Problems solved by technology

Due to the difference in the way the power head drives the drill pipe, the pressurization structure of the piling equipment is also different. For the case where the power head and the drill pipe are rigidly connected and cannot move relative to each other, the pressurized winch still acts on the power head at this time, but It must move at the same time as the working winch and in the opposite direction. This kind of pressurization requires close cooperation between the two winches, but there is no system to realize the cooperation between the two, so it is easy to mess up the rope or break the wire rope during work. Happening

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