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Winding motor hydraulic system and rotary drilling rig

A winch motor and hydraulic system technology, which is applied in the direction of winches, servo motors, servo motor components, etc., can solve the problems that the main winch is easy to drop when lowering the main winch, and the structure of the balance valve is complicated, so as to achieve a simple structure and not easy to fail , cost-saving effect

Active Publication Date: 2013-04-24
BEIJING SANY INTELLIGENT MFG TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a hoist motor hydraulic system and a rotary drilling rig to solve the problem that the balance valve structure in the prior art is complicated and the drill is prone to drop when the main hoist is lowered.

Method used

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  • Winding motor hydraulic system and rotary drilling rig

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Embodiment Construction

[0030] It should be pointed out that the description and sequence of specific structures in this section are only descriptions of specific embodiments, and should not be considered as limiting the protection scope of the present invention. In addition, the embodiments in this section and the features in the embodiments can be combined with each other under the condition of no conflict.

[0031] Please refer to figure 1 , the present invention will be described in detail below in conjunction with embodiment.

[0032] Such as figure 1 As shown, the hoist motor hydraulic system of this embodiment includes a hoist motor 1, a hoist motor brake cylinder 2, a first one-way overflow valve 4, a second one-way overflow valve 5, a one-way balance valve 6, The first shuttle valve 7, the second shuttle valve 3, the sequence valve 8, the pressure reducing valve 9, the throttle valve 10, the first oil passage 01 and the second oil passage 02.

[0033] Wherein, the first end of the first o...

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Abstract

The invention discloses a winding motor hydraulic system and a rotary drilling rig. The system comprises a winding motor, a uni-directional balance valve, a first oil channel and a second oil channel, wherein the first end of the first oil channel is connected to one of an oil inlet channel and an oil returning channel, the second end of the first oil channel is connected to a free oil inlet end of the uni-directional balance valve, the free oil inlet end of the uni-directional balance valve is connected to an upper oil lifting port of the winding motor, the first end of the second oil channel is connected to the other one of the oil inlet channel and the oil returning channel, the second end of the second oil channel is connected to a lower oil releasing port of the winding motor, the hydraulic control end of the uni-directional balance valve is connected to the second oil channel, and the uni-directional balance valve is a tapered valve. The requirement of the lifting condition of the winding motor can be met, the structure is simple, the cost is saved, faults are not easy to happen, and the probability of the rig dropping during the lowering of the winding motor is reduced effectively.

Description

technical field [0001] The invention relates to the technical field of winch motor control, in particular to a winch motor hydraulic system and a rotary drilling rig. Background technique [0002] At present, the control process of the main winch motor of the rotary drilling rig mainly includes: 1. The lifting speed control of the main winch; 2. The start and stop control of the main winch action; 3. The safety and reliability of the main winch under working conditions sexual control. In the prior art, the hydraulic control system of the main winch motor generally adopts a design scheme based on a counterbalance valve double-acting (BVD), and in the brake oil circuit of the counterbalance valve, pressure reducing valves, Valve components such as sequence valves are integrated on the same valve block. [0003] However, this solution has the following defects and deficiencies: 1. The two-way balance valve is in the form of a slide valve, and the return is relatively lagging;...

Claims

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Application Information

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IPC IPC(8): B66D1/08B66D1/44F15B11/02F15B13/02
Inventor 刘建开郑立永余建明
Owner BEIJING SANY INTELLIGENT MFG TECH CO LTD
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