Double-oil-cylinder synchronous driving device and method for main boom of ship unloader
A technology of synchronous drive and double oil cylinders, which is applied in the direction of fluid pressure actuators, mechanical equipment, servo motors, etc., can solve the problems of unsuitable ship unloaders, synchronization errors, etc., to avoid damage to the boom structure and ensure high-intensity operations Effect
Pending Publication Date: 2022-03-04
SHANGHAI YIBO MECHANICAL & ELECTRICAL EQUIP CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the prior art, the rigid jib synchronization technology based on the parallel connection of hydraulic pipelines often results in huge internal force of the rigid jib, requiring more rigid materials, or the distance between the oil cylinders is very close so that the structure will not be damaged; and Synchronization based on displacement feedback, due to the repeated movement of the oil cylinder and the movement of the zero position of the sensor, a synchronization error occurs, which is not suitable for ship unloaders with long-term unmanned maintenance and high-intensity operations
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
[0017] Such as figure 1 As shown, the double oil cylinder synchronous driving device of the main boom frame of the ship unloader of the present invention includes a left jacking oil cylinder 110, a right jacking oil cylinder 110', an oil pump 210, an oil inlet circuit 220, an oil return circuit 230, a left proportional reversing Speed regulating valve 240 , right proportional reversing speed regulating valve 240 ′ and leakage oil passage 250 .
[0018] The following combination Figure 2 to Figure 4 As shown, the left jacking cylinder 110 and the right jacking cylinder 110' have the same structure, and the piston rods of the left jacking cylinder 110 and the right jacking cylinder 110' are connected to the main arm frame of the ship unloader (not shown in the figure) . The left jacking cylinder 110 has a left large chamber 111 and a left small chamber 112; the right jacking cylinder 110' has a right large chamber 111' and a right small chamber 112'.
[0019] Wherein, the ...
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 discloses a double-oil-cylinder synchronous driving device and method for a main arm frame of a ship unloader. The pressure intensity of oil cavities in a left jacking oil cylinder and a right jacking oil cylinder is monitored in real time through a pressure sensor; when the difference value of different driving forces output by the left jacking oil cylinder and the right jacking oil cylinder exceeds the allowable difference value range and is within the allowable adjustment range of the proportional reversing speed regulating valve, the hydraulic cylinder is started; and the left proportional reversing speed regulating valve and the right proportional reversing speed regulating valve are finely adjusted, so that different difference values of driving forces output by the left jacking oil cylinder and the right jacking oil cylinder return to an allowable difference value range, and load balance is achieved. Load balance adjustment in the process that the double oil cylinders synchronously jack or pull down the main arm frame of the ship unloader is achieved, the situation that the arm frame structure is damaged due to the fact that too large internal force is generated is avoided, and high-strength operation of the ship unloader is guaranteed.
Description
technical field [0001] The invention belongs to the technical field of ship unloaders, and relates to a main boom of a ship unloader, in particular to a double oil cylinder synchronous drive device and method for a main boom of a ship unloader. Background technique [0002] The ship unloader is a common equipment for unloading bulk materials on ships. The screw conveying arm of the ship unloader is supported by the main boom. During the working process of the ship unloader, the main boom frame is often required to drive the screw conveying arm up and down. The lifting of the main boom is driven by an oil cylinder, and in order to obtain a relatively large driving force and realize a stable movement of the boom, it is driven by a double oil cylinder. However, the dual-cylinder drive needs to control the ratio of the force output by the two cylinders within a predetermined range according to the load distribution of the boom. The load balance of the two cylinders is required...
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 IPC IPC(8): F15B11/22F15B13/06
CPCF15B11/22F15B13/06
Inventor 袁本森
Owner SHANGHAI YIBO MECHANICAL & ELECTRICAL EQUIP CO LTD