Anti-backward tilt control method, system and hoisting equipment for hoisting equipment
A technology of hoisting machinery and control methods, which is applied in the testing of mechanical equipment, cranes, and fluid pressure actuation systems, etc., can solve the problems of insufficient support and reaction force accuracy, unchangeable fixed support and reaction force, etc., so as to prevent failures. Effect
Active Publication Date: 2021-10-29
ZOOMLION HEAVY IND CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
It avoids the problem that the fixed support reaction force cannot be changed according to the angle segment and the accuracy of the support reaction force is not enough due to the change of the outflow flow rate of the rodless chamber of the oil cylinder due to the boom luffing speed factor
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0068] 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.
[0069] figure 2 It is a flow chart of a method for controlling backward tilting of a hoisting machinery provided by an embodiment of the present invention. The hoisting mechanical equipment is provided with an anti-backward hydraulic cylinder for providing anti-backward force, such as figure 2 As shown, the method includes:
[0070] Obtain the target anti-recoil force F of the anti-recoil hydraulic cylinder 1 , The pressure parameter P of the rodless chamber of the anti-backward hydraulic cylinder 1 and rod cavity pressure parameter P 2 ;
[0071] According to the pressure parameter P of the rodless cavity 1 and the rod chamber pressure parameter P 2 ,...
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
Login to View More Abstract
The invention provides an anti-backward tilting control method and system of hoisting machinery equipment and hoisting machinery equipment, which belong to the technical field of cranes. The method includes: obtaining the target anti-reversing force F1 of the anti-reclining hydraulic cylinder, the pressure parameter P1 of the rodless chamber and the pressure parameter P2 of the rod chamber of the current anti-reversing hydraulic cylinder; The cavity pressure parameter P2 is used to calculate the actual anti-recoil force F currently provided by the anti-recoil hydraulic cylinder; when the actual anti-recoil force F is not equal to the target anti-recoil force F1, according to the target anti-recoil force F1 and rod chamber pressure parameter P2, calculate the target adjustment current Ix of the electric proportional relief valve connected with the rodless chamber of the anti-backward hydraulic cylinder; adjust the relief pressure of the electric proportional relief valve based on the target adjustment current Ix, thereby adjusting The anti-backward force provided by the anti-backward hydraulic oil cylinder until the anti-backward force is equal to the target anti-backward force F1.
Description
technical field [0001] The invention relates to the technical field of cranes, in particular to an anti-backward tilt control method for hoisting mechanical equipment, an anti-backward tilt control system for hoisting mechanical equipment, and a lifting mechanical equipment. Background technique [0002] The anti-backward device refers to a combination of mechanical or hydraulic protection devices used in cranes to prevent mechanical structures such as booms or super-lifting masts from tipping backwards due to gravity. [0003] In the existing truss-type lifting machinery equipment, due to the change of the center of gravity of the jib and the rebound of the radius of the jib, an anti-backward device is provided to prevent the jib from moving backwards during the movement or when the jib is stopped. overturned. At present, in the technical field of cranes, there are many types of anti-backward devices, including: springs provide support and reaction force, and as the angle ...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/46B66C13/48B66C23/62B66C23/80B66C23/82F15B21/08F15B19/00
CPCB66C13/46B66C13/48B66C23/62B66C23/80B66C23/828F15B19/00F15B21/087
Inventor 张源刘建华黄赞尚有东沈昌武
Owner ZOOMLION HEAVY IND CO LTD