Method, system and engineering machinery for synchronously controlling multiple oil cylinders

A synchronous control, engineering machinery technology, applied in mechanical equipment, servo motors, servo motor components, etc., can solve the problem of insufficient synchronization of multiple oil cylinders, and achieve the effects of easy adjustment, simple and convenient maintenance, and cost reduction.

Inactive Publication Date: 2013-04-17
SANY HEAVY IND CO LTD (CN)
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  • Abstract
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Problems solved by technology

[0003] In view of this, the present invention aims to propose a multi-cylinder synchronous control method, system and

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  • Method, system and engineering machinery for synchronously controlling multiple oil cylinders

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments of the present invention 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.

[0023] The multi-oil cylinder synchronous control method described in the embodiment of the present invention is to connect the parallel oil cylinders in series with the balance valve and the reversing valve respectively, and then connect them in series with a diverter valve 2 and a load-sensing valve 1, and the diverter valve 2 The oil inlet is communicated with one working oil port of the load sensing valve 1, the oil outlet of the diverter valve 2 is respectively communicated with the oil inlet of the reversing valve of each oil cylinder, and the other working port of the load sensing valve 1 is The oil port is connected with the oil return port of the reversing valve of each oil cylinder at t...

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Abstract

The invention provides a method, a system and engineering machinery for synchronously controlling multiple oil cylinders. The method includes: the oil cylinders in parallel connection are serially connected with balance valves and reversing valves respectively, and then serially connected with a flow dividing valve and a load-sensitive valve. An oil inlet of the flow dividing valve is communicated with a working oil port of the load-sensitive valve. An oil outlet of the flow dividing valve is communicated with oil inlets of the reversing valves of the oil cylinders. The other working oil port of the load-sensitive valve is communicated with oil return ports of the reversing valves of the oil cylinders. When oil paths of the oil cylinders are all communicated with the load-sensitive valve, the oil cylinders can be controlled by the load-sensitive valve synchronously. By the method, the oil cylinders can be controlled by synchronously by one load-sensitive valve, cost can be lowered, simple and convenient maintenance is achieved, oil intake of the oil cylinders is controlled by the flow dividing valve, and synchronization performance of the oil cylinders is improved effectively.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a multi-cylinder synchronous control method, system and engineering machinery. Background technique [0002] At present, in the entire rotary drilling rig industry, two load-sensing valves are used to control the two cylinders of the mast. The rotary drilling machine using this system still has more or less problems in the synchronization performance and action stability of the mast cylinder. Problems, especially when the load difference between the left and right mast cylinders is large, it is prone to vibration and other phenomena, which seriously affects the safety of the rotary drilling rig operation. Contents of the invention [0003] In view of this, the present invention aims to provide a multi-cylinder synchronous control method, system and construction machinery to solve the problem of insufficient synchronization when multiple cylinders share a load. [0004] In ...

Claims

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Application Information

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IPC IPC(8): F15B11/22F15B13/06
Inventor 张洪祥刘建开
Owner SANY HEAVY IND CO LTD (CN)
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