Grab controller, control system and control method as well as engineering mechanical equipment

Abstract

The invention discloses a grab controller, a control system, a control method as well as engineering mechanical equipment. The grab controller comprises a receiving unit, a judging unit and a processing unit, wherein the receiving unit is used for receiving a stroke signal of an opening-closing bucket cylinder; the judging unit is used for judging the state of a grab according to the stroke signal of the opening-closing bucket cylinder; the processing unit is used for outputting a control signal according to the state of the grab; and the control signal is used for controlling a control electromagnetic valve of the opening-closing bucket cylinder to be switched off. The state of the grab is determined through detecting the stroke of the opening-closing bucket cylinder, the control signal is outputted according to the state of the grab, an opening-closing bucket control valve bank needing to be switched off can be switched off in time accurately, and energy loss caused by shutoff pressure of an opening-closing bucket action system is eliminated, thereby the energy-saving and emission-reducing effects are achieved.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a grab controller, a control system, a control method and construction machinery equipment. Background technique [0002] In the field of construction machinery, for example, during the trenching construction process of the underground diaphragm wall hydraulic grab bucket machine, there are six main actions for each bucket of soil: putting the bucket, grabbing the soil, lifting, turning, dumping the soil, and turning back. In this cycle, the driver will perform multiple bucket opening and closing actions through the joystick, so as to ensure that enough buckets of soil are grabbed from the deep groove to the ground to dump the soil at one time, so as to achieve a higher construction efficiency. When the grab flap is fully opened or closed, due to the locking of the mechanical position, the oil circuit of the grab opening or closing bucket will be immediately suppressed. Amo...

AI Technical Summary

Problems solved by technology

In this process, from the time when the grab is opened or closed to the time when the driver stops opening or closing the bucket based on experience, a period of time will be lost, which reduces work efficiency. At the same time, the sudden increase in system pressure will also cause system power consumption At this time, the hydraulic oil after the pressurization does not do any useful work, but only causes the system to heat up, and a large amount of energy is converted into heat in the process and consumed, resulting in a great waste of energy

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