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Merging control system, method and crane

A control system and confluence valve technology, applied in mechanical equipment, fluid pressure actuating devices, load hanging components, etc., can solve the problems of insufficient oil supply to the actuator, inconvenient use, failure of composite actions, etc., to improve rapidity and efficiency. Reliability, reduced energy consumption, improved fretting effect

Active Publication Date: 2017-03-01
XUZHOU HEAVY MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the flow independent distribution control technology, during compound action, if the flow is still distributed to each actuator according to the inherent ratio under the condition of large load pressure difference, it may cause insufficient oil supply to some actuators, so compound action occurs The failure phenomenon brings great inconvenience to the user

Method used

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  • Merging control system, method and crane
  • Merging control system, method and crane
  • Merging control system, method and crane

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] figure 1 It is a schematic diagram of the principle of an embodiment of the confluence control system of the present invention. refer to figure 1 As shown, the confluence control system of this embodiment includes: a solenoid valve 1 , a shuttle valve 2 , a hydraulic control reversing valve ...

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Abstract

The invention discloses a cocurrent flow control system, a cocurrent flow control method and a crane and relates to the field of engineering machinery. By virtue of utilizing control logic based on an electromagnetic valve, a pilot operated directional control valve and a shuttle valve, automatic control and manual control for the coccurent flow of two dumps can be realized, and the operation rapidness and operation reliability of the crane are improved; during composite action, when the load pressure difference is increased to a certain extent, a dual-pump cocurrent flow state is automatically switched to a dual-pump independent oil supply non-coccurent flow state, performances are not mutually influenced and the composite action effect is improved; by the using of a dual-pump coccurent flow manual control mechanism, independent operations of the two pumps can be realized according to demands of actual working conditions, for instance, single-pump operation is realized when operations such as hoisting jiggle, amplitude variation decrease, and arm stretching and contraction are performed, so that the jiggle property is improved and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a confluence control system, method and crane. Background technique [0002] With the development of construction machinery, people put forward higher requirements for the operability and speed of the crane. On modern hoisting machinery, the flow independent distribution (LUDV) control method is often applied to the crane hydraulic system. The main principle of flow independent distribution control technology is: based on the highest load pressure of the actuator, when the flow required by the actuator is greater than the flow of the pump, the system will distribute the flow to each actuator in proportion, rather than to the execution of light load. device. [0003] According to the flow independent distribution control technology, during compound action, if the flow is still distributed to each actuator according to the inherent ratio under the condition of large load pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/17B66C13/20
CPCB66C13/20F15B11/17
Inventor 胡小冬焦国旺周彬
Owner XUZHOU HEAVY MASCH CO LTD
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