Gate type concrete pump and pumping control system thereof

Abstract

The invention provides a gate type concrete pump and a pumping control system thereof. The pumping control system for the gate type concrete pump comprises a gate control system (10), a master oil cylinder control system (20) and a position switch (13), wherein the gate control system (10) comprises a gate and a gate control oil cylinder which is in drive connection with the gate; and the position switch (13) is arranged in an extending direction of the gate control oil cylinder and is used for detecting position of the gate during closure and outputting a signal to the master oil cylinder control system (20). According to the pumping control system for the gate type concrete pump, the conditions that pumping is started after a gate valve is closed in place and is tightly closed can be guaranteed, and the phenomenon that slurry flows back to a hopper due to concrete separation is prevented; therefore, pipe blockage is prevented.

Description

technical field [0001] The invention relates to the field of hydraulic machinery, in particular to a ram-type concrete pump and a pumping control system thereof. Background technique [0002] Ram pumps are mainly used in pumping constructions such as tunnels and nuclear power plants. Compared with commercial concrete, the material condition pumped by ram pump is easy to segregate. In addition, there are great differences in concrete across the country, which leads to poor pumpability of ram pump material condition. In the existing ram pumps, when the pumping pressure is too low, the liquid filling pressure of the accumulator is too low, and the ram operating speed cannot meet the pumping requirements of the material conditions with large differences and easy segregation. Since it is impossible to judge whether the shutter is closed tightly, once the speed of the shutter is slow or the shutter is not tightly closed due to jamming, the pumping will start to move before the sh...

AI Technical Summary

Problems solved by technology

Because the piston stroke in the oil cylinder is monitored, when the piston 20' of the ram cylinder passes the monitoring position, it still needs to continue to move forward in the oil cylinder for a period of time, which will cause the ram to be closed tightly, and the main pumping cylinder will start to move , causing the concrete to return to the hopper from the suction port, so that the pumping operation cannot be carried out normally, and in severe cases, the pipe will be blocked

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