Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A hoist brake control system, method and crane

A technology of control system and control method, which is applied in hoisting devices, mechanical equipment, fluid pressure actuating devices, etc., can solve problems such as failure to cut off dangerous actions in time, slow closing time of hoisting brakes, and complex system design, etc., and achieve structural Simple, prevent dangerous actions, open the effect of precise control

Active Publication Date: 2017-09-19
XUZHOU HEAVY MASCH CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) It is necessary to open the winch brake through an external stable oil source, the system design is complex, and there are many connecting pipelines
[0007] 2) Since the hydraulic control reversing valve adopts spring mechanical reset, affected by inertia, the response time is longer; when the stall is caused by motor leakage and other reasons, the closing time of the winch brake is slow, and the dangerous action cannot be cut off in time

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
  • A hoist brake control system, method and crane
  • A hoist brake control system, method and crane
  • A hoist brake control system, method and crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0033] First, explain the technical terms involved in the present invention.

[0034] Hoist brake: a device used in the hoist mechanism of a crane to achieve hoist braking.

[0035] Hoist brake control valve: a control valve used to control the hoist brake of the hoist mechanism. The opening and closing of the control valve can control the opening and closing of the hoist brake, so as to realize the lifting and falling of the hoist mechanism.

[0036] Such as f...

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 relates to a hoist brake control system, method and crane, wherein the hoist brake control system includes a motor, a hoist brake, a hydraulic control reversing valve and a shuttle valve, and the first oil port of the motor is connected to the first oil port of the shuttle valve. One oil inlet, the second oil port of the motor is connected to the second oil inlet of the shuttle valve, and the oil outlet of the shuttle valve is connected in parallel to the liquid control end of the hydraulic control reversing valve and the first oil port of the hydraulic control reversing valve, The second oil port of the hydraulic control directional valve is connected to the winch brake, and the third oil port of the hydraulic control directional valve is connected to the oil tank. The oil port is connected with the second oil port, and after the hydraulic control reversing valve is reset, the second oil port of the hydraulic control reversing valve is connected with the third oil port. The invention uses the load pressure oil source from the motor to simultaneously control the reversing of the hydraulic control reversing valve and the opening of the hoist brake. Therefore, it is not necessary to set a stable oil source to control the opening and closing of the hoist brake. The control is more precise and the safety is higher.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a hoist brake control system, method and crane. Background technique [0002] The winch mechanism is the main operating mechanism of the hoisting machinery, which is used to realize the vertical lifting of heavy objects. In mobile cranes, hydraulic drive is generally used to drive the winch action. The system is mainly composed of a hydraulic motor, a reducer, a winch brake, a balance valve, main valve and pilot control valve, among which the winch brake plays the role of locking the winch, preventing accidental stall and matching operation performance. The matching of the opening control of the winch brake with the opening control of the main valve and balance valve has a great influence on the safety, smoothness and reliability of the winch system. Improper matching of the system will not only cause problems such as hoisting hook jumping and reverse rotation, which will af...

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): B66D5/28F15B11/17
Inventor 张海燕胡小冬焦国旺杜建西
Owner XUZHOU HEAVY MASCH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com