Jack and take-up and pay-off device collaborative operation control method and system
A technology of a wire take-up and pay-off device and a control method, which is applied in hoisting devices, hoisting devices, fluid pressure actuating devices, etc., can solve problems such as damage to clips, deformation of steel strands, and nesting accidents of steel strands, and achieve The effect of avoiding clip damage
Active Publication Date: 2022-08-05
LIUZHOU OVM MASCH CO LTD
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AI Technical Summary
Problems solved by technology
A sudden change in tension exceeding the safety upper limit will cause damage to the clips of the jack clamping device and scratches on the steel strand, resulting in wire slipping accidents; The outer ring is loose and may be embedded between the outer ring strands, causing mutual interference and extrusion, resulting in deformation of the strands, resulting in strand nesting accidents
Method used
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[0034] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.
[0035] see Figure 1-3 , In actual work, the steel strand 11 is accommodated in the periphery of the wire reel 5 of the take-up and pay-out device 2 , and the steel strand 11 passes through the jack 1 to lift or lower the heavy object 10 .
[0036] A method for controlling the coordinated operation of a jack and a retracting and unwinding device, comprising:
[0037] Get the working status of jack 1;
[0038] When the jack 1 is lifting, the hydraulic motor 3 of the take-up and pay-off device 2 is controlled to run at the set take-up torque, and the brake 4 of the take-up and pay-off device 2 is opened while ensuring that the reel 5 of the take-up and pay-off device 2 is opened. Rotate in the direction of take-up and the rotation speed is slightly higher than the cylinder extension speed of the jack 1, that is, the linear speed of the reel 5 ...
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The invention discloses a jack and take-up and pay-off device collaborative operation control method and system, relates to the technical field of hoisting equipment, and solves the technical problem of equipment failure caused by sudden change of tension of a steel strand in a take-up and pay-off device in the hoisting process. During lifting operation, a hydraulic motor of the take-up and pay-off device is controlled to operate with set take-up torsion, and a wire coil of the take-up and pay-off device rotates in the take-up direction while a brake of the take-up and pay-off device is guaranteed to be opened, and the rotating speed is slightly higher than the cylinder stretching speed of a jack; during lowering operation, the hydraulic motor is controlled to operate with set pay-off torsion, and the wire coil rotates in the pay-off direction and the rotating speed is slightly lower than the cylinder shrinkage speed of the jack while the brake is guaranteed to be opened. The rotating speed of the wire coil is higher than the cylinder stretching speed during lifting operation, and the rotating speed of the wire coil is lower than the cylinder shrinking speed during lowering operation, so that the tension of the steel strand is maintained within a safe range.
Description
technical field [0001] The invention relates to the technical field of hoisting equipment, and more particularly, to a method and system for controlling the coordinated operation of a jack and a wire retracting and unwinding device. Background technique [0002] In the process of hoisting heavy objects with hydraulic jacks in bridge construction equipment and heavy object shifting equipment, each jack needs to be equipped with a hydraulic power-driven take-up and pay-off device to take up or pay off the entire bundle of steel strands. Collaborative work. The jack-up operation corresponds to the coordinated operation of the take-up line, and the jack-down operation corresponds to the coordinated operation of the pay-out line. During the coordinated operation of the jack and the take-up and pay-off device, the tension of the steel strand needs to be kept stable, but during the lifting or lowering of the jack, the movement speed of the piston changes in real time, which makes ...
Claims
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IPC IPC(8): B66D1/50B66D1/08B66D1/74B66F3/24F15B13/02F15B21/08E01D21/00
CPCB66D1/50B66D1/08B66D1/7447B66F3/24F15B13/02F15B13/029F15B21/08E01D21/00
Inventor 吕振刚李兴奎朱廷志谢诗郭世滔刘俊覃尧周洪同李兴帅张皓严李荣梁涛韦富伦宾俞华刘堃谢辉苏庆勇李沣汉
Owner LIUZHOU OVM MASCH CO LTD