Electro-hydraulic proportional control auxiliary system and construction machinery equipment

An auxiliary system, electro-hydraulic proportional technology, applied in the direction of mechanical equipment, servo meter circuit, servo motor, etc., can solve the problems of fine operation difficulty, reduce the service life of the rotating motor, rough hydraulic shear rotation, etc., to achieve fine The effect of streamlining operation and prolonging service life

Active Publication Date: 2022-07-05
SHANGHAI SANY HEAVY IND
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  • Description
  • Claims
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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 construction machinery equipment
  • Electro-hydraulic proportional control auxiliary system and construction machinery equipment
  • Electro-hydraulic proportional control auxiliary system and construction machinery equipment

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Embodiment Construction

[0028] In order to make the purposes, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0029] Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary ski...

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Abstract

The invention provides an electro-hydraulic proportional control auxiliary system and construction machinery equipment, and relates to the technical field of construction machinery. The electro-hydraulic proportional control auxiliary system includes an engine, a gear pump, an electro-hydraulic reversing valve, a control assembly and a rotary motor. The engine is connected with the gear pump, and the gear pump is connected with the rotary motor to drive the rotary motor to rotate. There is an electro-hydraulic reversing valve between the gear pump and the rotary motor, and the control assembly is connected with the electro-hydraulic reversing valve; the control assembly can control the opening of the electro-hydraulic reversing valve to adjust the flow of the rotating motor, and can precisely control as needed The flow rate of the rotary motor realizes refined operation and improves the service life of the rotary motor.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/08F15B13/044
CPCF15B11/08F15B13/044F15B2211/20546F15B2211/405
Inventor 秦小兵
Owner SHANGHAI SANY HEAVY IND
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