Hydraulic boom control system and harbor handling machine

A hydraulic control system and boom technology, applied in the direction of fluid pressure actuation system safety, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of pressure loss, high working noise, etc., and achieve less hydraulic components and stable system , The effect of small power loss

Active Publication Date: 2014-06-25
CHINA SHENHUA ENERGY CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the reversing valve is reversing, in addition to the hydraulic shock generated, the working noise is also large, and throttling and speed regulation will cause a certain pressure loss

Method used

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  • Hydraulic boom control system and harbor handling machine
  • Hydraulic boom control system and harbor handling machine

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Embodiment Construction

[0038] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0039] Such as figure 1 As shown, the present invention provides a boom hydraulic control system, which includes a hydraulic cylinder 1, an oil tank T, a closed variable displacement pump 2 and an open variable displacement pump 3, and the closed variable displacement pump 2 is arranged on an active part connected to the hydraulic cylinder 1. In the hydraulic cylinder connecting oil passage V1 of the rod cavity and the rodless chamber, the open variable pump 3 is arranged in the fuel tank connecting oil passage V2 between the hydraulic cylinder connecting oil passage V1 and the fuel tank T. As a general design purpose, the present invention aims at the disadvan...

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Abstract

The invention discloses a hydraulic boom control system and a harbor handling machine. The system comprises a hydraulic cylinder (1), an oil tank (T), a closed variable pump (2) and an open variable pump (3), the closed variable pump is arranged in a hydraulic cylinder connecting oil circuit (V1) of a rod cavity and a rodless cavity of the hydraulic cylinder, and the open variable pump is arranged in an oil tank connecting oil circuit between the hydraulic cylinder connecting oil circuit and the oil tank. According to the hydraulic boom control system, advantages of a closed hydraulic system and an open hydraulic system are combined, respective shortcomings are made up, the closed variable pump and the open variable pump are adopted, power loss of the closed variable pump and the closed system are low, output flow of the closed variable pump is directly regulated to control speed of the hydraulic cylinder so as to avoid throttle control, throttle pressure loss is avoided, and system heat emission is reduced. Compared with the open hydraulic system in the prior art, the system is more stable, fewer in hydraulic elements, more compact in structure.

Description

technical field [0001] The invention relates to a port loading and unloading machine, in particular to a boom hydraulic control system for controlling movements such as boom pitching and a port loading and unloading machine with the boom hydraulic control system. Background technique [0002] In the port handling machinery such as stacker, reclaimer, stacker-reclaimer, ship loader, etc., the pitching system of the boom can be divided into two types: mechanical type and hydraulic type. The mechanical type is mainly driven by a wire rope with a pulley block. Composed of motor, reducer, reel, safety protection device, etc., the motor drives the wire rope reel to wind through the coupling through the reducer and other transmission devices, so as to realize the pitching movement of the boom. The hydraulic pitching mechanism is usually an open system. Generally, the quantitative pump or the variable pump sucks oil from the fuel tank. After passing through various hydraulic control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/17F15B13/02F15B1/02F15B20/00F15B21/04B65G63/00
Inventor 师伟汪大春王明乐刘嵩
Owner CHINA SHENHUA ENERGY CO LTD
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