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Connecting method of hydraulic parallel type speed transition circuit

A circuit connection and parallel technology, applied in the hydraulic field, can solve the problems of complicated structure, heavy equipment, low work efficiency, etc., and achieve the effect of improving operation controllability, reducing labor intensity and simplifying oil circuit.

Inactive Publication Date: 2013-03-13
无锡九条龙汽车设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hydraulic system components of this product have many problems from different perspectives such as operation methods, working methods, and complicated structures, which lead to inefficient work, heavy equipment weight, and high costs

Method used

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Examples

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Embodiment Construction

[0010] According to the embodiment of the present invention, the hydraulic parallel speed switching circuit connection method, the main steps include:

[0011] (1) First, add two parallel-connected speed control valves between the circuit composed of the hydraulic cylinder and the variable pump to realize the switching circuit of the two feed speeds, and the feed speeds of the two speed control valves are adjusted separately;

[0012] (2) Then, connect a differential pressure reducing valve to the oil circuit of the two parallel speed regulating valves, and adjust the differential pressure reducing valve to the maximum opening position when one speed regulating valve is working and the other speed regulating valve passes through without oil;

[0013] (3) Add a stroke valve in the oil circuit between the two speed control valves and the hydraulic cylinder.

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PUM

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Abstract

The invention discloses a connecting method of a hydraulic parallel type speed transition circuit. The connecting method comprises the following steps that firstly, two speed adjusting valves connected in parallel are additionally arranged in a circuit consisting of a hydraulic cylinder and a variable pump, so as to realize a transition circuit with two feeding speeds, and the feeding speeds of the two speed adjusting valves are respectively adjusted; then, hydraulic circuits of the two speed adjusting valves connected in parallel are externally provided with a fixed differential pressure reducing valve, and when one speed adjusting valve works and the other speed adjusting valve has no hydraulic fluid passing, the fixed differential pressure reducing valve is adjusted to the maximum opening position; and a travel valve is additionally arranged in a hydraulic circuit between the two speed adjusting valves and the hydraulic cylinder. The connecting method has the beneficial effects that the hydraulic circuit is simplified, the action is reliable, the precision of the converted position is higher, and the sufficient transition precision is realized.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a hydraulic parallel connection method for speed switching circuits. Background technique [0002] Hydraulic technology is one of the key technologies to realize modern transmission and control. Due to light weight and small size, various components of hydraulic transmission can be conveniently and flexibly arranged according to needs. Combining with the latest technology, it has a high degree of automation and is easy to operate and control. It is easy to realize linear motion and a wide range of stepless speed regulation. To achieve overload protection, mineral oil is used as the working medium, which can be self-lubricated relative to the moving surface and has a long service life. With the continuous improvement of the degree of automation of hydraulic machinery, the number of hydraulic components used has increased sharply, and the miniaturization of components and syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/04
Inventor 鲍安良
Owner 无锡九条龙汽车设备有限公司
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