Distributing valve for concrete pump, concrete pump, control method thereof and concrete pump truck

Abstract

The invention discloses a distributing valve for a concrete pump, the concrete pump, a control method thereof and a concrete pump truck. The distributing valve for the concrete pump comprises a valve body and a wear-resisting plate. The valve body comprises a first suction pipe and a first pumping pipe, wherein the back end of the first suction pipe is communicated with an outlet of a hopper so as to communicate the hopper and a delivery cylinder, and the back end of the first pumping pipe is rotatably connected with a delivery pipe of the concrete pump so as to communicate the delivery cylinder and the delivery pipe. The valve body can be switched between a first state and a second state under the driving of a drive mechanism, in the first state, concrete slurry is sucked into the delivery cylinder through the first suction pipe, and in the second state, the delivery cylinder pumps over the concrete slurry through the first pumping pipe. Because of the distributing valve with the structure, the concrete pump can thoroughly employ the self-flowing capacity of the concrete slurry in order to increase the suction performance of the concrete pump. The distributing valve has higher pressure bearing capacity, and the concrete pump can ensure that the concrete slurry has higher pressure through the delivery cylinder, thereby meeting the needs of high-pressure pumps to pump over the concrete slurry.

Description

technical field

[0001] The invention relates to a concrete pump technology, in particular to a distribution valve for a concrete pump, and also to a concrete pump with the distribution valve, a control method and a concrete pump truck. Background technique

[0002] Concrete pumps are one of the most widely used concrete machines at present. Concrete pumps generally include hoppers, delivery cylinders, distribution valves and delivery pipes. The hopper is used to store concrete slurry, the delivery cylinder is driven by the hydraulic cylinder to perform telescopic movement, and the distribution valve is used to connect the delivery cylinder with the hopper within a predetermined first time, so that the delivery cylinder can absorb material and an appropriate amount of concrete slurry; In the second time, the conveying cylinder is communicated with the conveying pipe, so that the conveying cylinder pumps the material, and the inhaled concrete slurry is pressed into the conveyi...

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