Hoist control system

A control system and control valve technology, applied in the field of hydraulic control, can solve problems such as pressure fluctuation in the hoisting control system, and achieve the effects of alleviating jitter problems, eliminating pressure fluctuations, and improving generalizability

Active Publication Date: 2016-10-05
ZOOMLION HEAVY IND CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a winch control system to solve the problem of easy pressure fluctuation in the winch control system in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hoist control system
  • Hoist control system
  • Hoist control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] The present invention provides a winch control system, please refer to Figure 2 to Figure 7 , the winch control system includes a winch motor 10, a load sensing pump 20 and a main control valve group 30, and the main control valve group 30 includes a first working oil port 31, a second working oil port 32, an oil inlet 33 and a load The feedback oil port 34, the first working oil port 31 of the main control valve group 30 is connected with the first oil port 11 of the hoist motor 10, the second working oil port 32 of the main control valve group 30 is connected with the second oil port 11 of the hoist motor 10 The oil port 12 is connected, the oil inlet 33 of the main control valve gro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a winch control system which comprises a winch motor, a load sensing pump and a main control valve group. The main control valve group comprises a first working oil port, a second working oil port, an oil inlet and a load feedback oil port, the first working oil port of the main control valve group is connected with a first oil port of the winch motor, the second working oil port of the main control valve group is connected with a second oil port of the winch motor, the oil inlet of the main control valve group is connected with an oil supply port of the load sensing pump, and the load feedback oil port of the main control valve group is connected with a feedback oil port of the load sensing pump. The winch control system further comprises a damping pressure-stabilizing valve group, wherein the damping pressure-stabilizing valve group is installed on the hydraulic pipe between the load feedback oil port of the main control valve group and the feedback oil port of the load sensing pump and used for retarding oil fluctuation in the winch control system. The winch control system effectively eliminates pressure fluctuation in the system, enables the motor to be capable of well working under the low-rotation-speed working condition and remarkably improves the slight movement performance of a crane hoisting mechanism.

Description

technical field [0001] The invention relates to the field of hydraulic control, in particular to a winch control device. Background technique [0002] Such as figure 1 As shown, the existing hoist circuit hydraulic system consists of a load sensing variable pump 1, an electro-hydraulic proportional directional valve 2, a hoist motor 3, and a hydraulic oil tank 4. The hoist oil return hydraulic system has the following disadvantages: [0003] (1) Since the winch motor 3 generally adopts the structure of one cylinder with several plungers, this inherent structure makes the motor work at low speed (especially when the motor speed is lower than its minimum stable speed) It is inevitable that there will be pressure fluctuations during work, especially when the motor speed is not high and the system working pressure is high or very high, the pressure fluctuations are obvious. Therefore, the fluctuation of the pressure will cause the hoisting mechanism to vibrate when the crane p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/44
CPCB66D1/44
Inventor 杨翔郭纪梅刘伟黄杰
Owner ZOOMLION HEAVY IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap