Electro-hydraulic proportional control auxiliary system and engineering mechanical equipment

An auxiliary system, electro-hydraulic proportional technology, applied in mechanical equipment, servo meter circuits, fluid pressure actuating devices, etc., can solve the problems of reducing the service life of rotating motors, difficult operation of fine work, and inability to precisely control on demand, etc. Achieve the effect of prolonging the service life and realizing the fine operation

Active Publication Date: 2020-01-31
SHANGHAI SANY HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the hydraulic shear mode, the rotary pressure of the hydraulic shear is that the system pressure exceeds the required pressure value of the machine tool, and the flow rate is not adjustable, so it cannot be precisely controlled on demand, resulting in rough rotary motion of the hydraulic shear and difficult fine operation, which greatly reduces the Rotary motor service life

Method used

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  • Electro-hydraulic proportional control auxiliary system and engineering mechanical equipment
  • Electro-hydraulic proportional control auxiliary system and engineering mechanical equipment
  • Electro-hydraulic proportional control auxiliary system and engineering mechanical equipment

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0029] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention provides an electro-hydraulic proportional control auxiliary system and engineering mechanical equipment. The electro-hydraulic proportional control auxiliary system comprises an engine,a gear pump, an electro-hydraulic reversing valve, a control module and a rotating motor. The engine is connected with the gear pump; and the gear pump is connected with the rotating motor to drive the rotating motor to rotate. The electro-hydraulic reversing valve is arranged between the gear pump and the rotating motor; the control module is connected with the electro-hydraulic reversing valve;the control module can control the openness of the electro-hydraulic reversing valve to adjust the flow of the rotating motor; and the flow of the rotating motor can be precisely controlled as neededto realize refined operation so as to prolong the service life of the rotating motor.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to an auxiliary system for electro-hydraulic proportional control and construction machinery equipment. Background technique [0002] With the wide application of excavators, the installation requirements for excavator multifunctional tools such as breakers, hydraulic shears, thumb grips, grabs, etc. are getting higher and higher, and there are various types. At this time, our hydraulic excavator needs to meet the use of various tools as much as possible. The hydraulic system and hydraulic auxiliary system must meet the requirements of pressure, flow and control methods of different tools so that they can work normally. [0003] At present, some excavators have been equipped with hammer-shear two-way hydraulic auxiliary control system as standard, although the hammer-shear function can be realized. However, in the hydraulic shear mode, the rotary pressure of the hydr...

Claims

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Application Information

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IPC IPC(8): F15B11/08F15B13/044
CPCF15B11/08F15B13/044F15B2211/20546F15B2211/405
Inventor 秦小兵
Owner SHANGHAI SANY HEAVY IND
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