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Buffer oil supplementing system and method of electro-hydraulic double-control motor-driven rotary system

A motor-driven, rotary system technology, applied in servo motor components, fluid pressure actuating devices, mechanical equipment, etc., can solve the problems of inability to realize hydraulically controlled automatic oil replenishment, low degree of automation, insufficient oil storage and replenishment, etc. The effect of saving construction cost, improving service life and simple system composition

Inactive Publication Date: 2019-12-03
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of insufficient oil storage and replenishment existing in the prior art, failure to realize automatic oil replenishment by hydraulic control, low degree of system automation, and large energy loss, and provides an electro-hydraulic dual-control motor-driven rotary system buffer Supplementary oil system and method

Method used

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  • Buffer oil supplementing system and method of electro-hydraulic double-control motor-driven rotary system
  • Buffer oil supplementing system and method of electro-hydraulic double-control motor-driven rotary system
  • Buffer oil supplementing system and method of electro-hydraulic double-control motor-driven rotary system

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Embodiment

[0031] see figure 1 , figure 1 It is the schematic diagram of the existing buffer oil replenishment hydraulic system. There are buffer overflow valves 102 and 106 at the motor A and B ports. Two oil replenishment single-way valves 103 and 105 are respectively connected to the motor A, B port and the oil tank, and work as a multi-way valve. In the left position, the motor rotates forward as an example, and the oil enters the A port and the B port returns the oil. The motor rotates. During this process, when the reversing valve suddenly switches to the right, the motor continues to rotate forward due to inertia At this time, due to the reversing of the multi-way valve, the motor is changed to B to feed oil. At this time, a high-pressure shock will be generated at the B port of the motor. When the shock pressure is greater than the set pressure of the buffer overflow valve 106, the buffer overflow valve will open and the load will be unloaded. In order to achieve the purpose of ...

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Abstract

The invention relates to a buffer oil supplementing system and method of an electro-hydraulic double-control motor-driven rotary system. According to the present invention, an oil supplementing reversing valve is connected into the loop of a hydraulic rotary motor, and an energy accumulator is used for providing an oil source for the oil supplementing reversing valve through a pressure reducing valve; when a multi-way valve of the hydraulic rotary motor is controlled to be in the middle position, the oil supplementing reversing valve works in the middle position to automatically supplement oilto a pipeline of the hydraulic rotary motor; during the action process of the hydraulic rotary motor, an oil inlet of the oil supplementing reversing valve is communicated with the low-pressure end of the hydraulic rotary motor, and the energy accumulator is punched through the oil return back pressure of the hydraulic rotary motor. According to the present invention, the technical problems thatin the prior art, the oil storage and supplement are insufficient, the hydraulic control automatic oil supplement cannot be achieved, the system automation degree is low, and the energy losses are large, are solved.

Description

technical field [0001] The invention relates to a buffer oil replenishment system and method, belonging to the field of drilling equipment, and in particular to a buffer oil replenishment system and method for an electro-hydraulic dual-control motor-driven rotary system. Background technique [0002] Hydraulic transmission has the advantages of large power and weight, flexible installation and arrangement of components, and can realize stepless speed regulation. It has been widely used in drilling rigs, such as motors, oil cylinders and other rotary motors, to control the rotation, feeding and pulling out of drilling rigs and pulling out assistance. action. With the improvement of drilling rig capacity, the structural size of the drilling rig is getting larger and larger, resulting in an increasing height difference between the hydraulic rotary motor and the oil tank. Taking the coalbed methane vehicle-mounted drilling rig as an example, the maximum height of the power head ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B1/02
CPCF15B13/02F15B1/02
Inventor 张刚沙翠翠宋海涛马斌晏显炜赵雪锋梁春苗范强
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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