Closed system, hoisting equipment and crawler-type travelling equipment

A closed system and closed pump technology, which is applied in mechanical equipment, fluid pressure actuated system components, transportation and packaging, etc., can solve the problems of low safety of closed systems, improve safety, reduce opening impact, The effect of simple structure

Active Publication Date: 2022-01-14
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a closed system, hoisting equipment and crawler-type walking equipment, in order to solve the safety problem of the closed system in the prior art. low problem

Method used

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  • Closed system, hoisting equipment and crawler-type travelling equipment
  • Closed system, hoisting equipment and crawler-type travelling equipment
  • Closed system, hoisting equipment and crawler-type travelling equipment

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Embodiment Construction

[0040] 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.

[0041] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance ...

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Abstract

The embodiment of the invention discloses a closed system, hoisting equipment and crawler-type travelling equipment. The closed system comprises a motor used for driving a hoisting mechanism or a travelling mechanism of mechanical equipment to work, a closed pump connected with the motor by means of a working pipeline and used for driving the motor, and an inching control valve arranged on the working pipeline or an oil port of the motor and used for conducting inching control when the mechanical equipment descends and / or preventing the motor from rotating reversely when the mechanical equipment ascends. The closed system is simple in structure, a speed of the mechanical equipment can be slightly increased from zero, a movement speed of the mechanical equipment is accurately controlled, controllability of the mechanical equipment is improved, opening impact is reduced, and therefore safety of the closed system is improved.

Description

technical field [0001] The invention relates to the technical field of closed systems, in particular to a closed system, lifting equipment and crawler-type walking equipment. Background technique [0002] At present, due to the advantages of energy saving, high energy density, and fewer hydraulic components, the closed system has become a key application technology for mechanical equipment. formula system. Crawler-type walking equipment is also widely used in closed systems for walking drive. [0003] When the mechanical equipment is running, both the closed pump and the motor have internal leakage. Assuming that the oil discharge port of the closed pump is T port, the oil discharge port of the motor is U port, the sum of the leakage of T port and U port is ΔQ, then ΔQ will cause the weight to fall, and its falling speed is proportional to ΔQ: ΔV= αΔQ, where α is a constant. When the mechanical equipment falls, the closed pump itself will output the flow Q, then the fall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/20F15B11/042F15B11/08F15B13/04F15B21/08
CPCB66C13/20F15B11/0426F15B11/08F15B13/0401F15B21/087
Inventor 李怀福郑保密赵建阳罗贤智沈昌武
Owner ZOOMLION HEAVY IND CO LTD
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