Double hydraulic devices and speed control method, equipment and system thereof

Abstract

The invention provides double hydraulic devices and a speed control method, equipment and a system of the double hydraulic devices. The speed control method comprises the following steps; obtaining the respective loads of the double hydraulic devices, wherein each of the two double hydraulic devices controls a set of execution mechanism, and each load comprises the pressure value born by each of the two double hydraulic devices; comparing the load of each of the double hydraulic devices with a respective preset load range; controlling the operation speeds of the double hydraulic devices according to the comparison result to enable the operation speeds of the double hydraulic devices to be matched. The double hydraulic devices and the speed control method, the equipment and the system of the double hydraulic devices are capable of effectively relieving the problem that the operation conditions of double hydraulic equipment such as a double-pump-control oil cylinder equipment or a double-pump-control motor equipment are not matched, further improve the work efficiency and work quality of the equipment, and prolongs the service lives of relevant components in the equipment.

Description

Technical field [0001] The invention relates to the field of engineering machinery, and more specifically, to a dual hydraulic device and a speed control method, equipment and system thereof. Background technique [0002] For construction machinery equipment with dual pump control cylinder system or dual pump control motor system, it is usually necessary to match the operating parameters of the hydraulic synchronous control device on it, for example, the underground continuous wall hydraulic double-wheel groove milling machine in the continuous wall construction process equipment, It is a typical double-pump equipment. During slotting operation, the output power of the engine is transmitted to the left and right milling wheels through a hydraulic pump-motor system to realize milling work. However, due to the characteristics of time-varying and sudden changes in the load received during the milling wheel operation, the rotation speed of the left and right milling wheels does not m...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of time-varying and sudden changes in the load on the milling wheel, it often occurs that the speed of the left and right milling wheels does not match (such as idling, stalling, etc.); thus reducing the efficiency of the milling operation or causing damage The damage of the equipment may also cause the vertical deviation of the milling head of the slot milling machine, which directly affects the milling quality

[0003] No effective solution has been proposed for the problem of mismatching operation conditions of dual-hydraulic equipment such as dual-pump control cylinder equipment or dual-pump control motor equipment.

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