Pumping reverse control method, device and system for pumping device

Abstract

The invention discloses a pumping reverse control method, device and system for a pumping device. The system comprises at least two first proximity switches for detecting whether a first oil cylinder piston reaches a preset position; at least one second proximity switch for detecting whether a second oil cylinder piston reaches a preset position; and a controller connected with the at least two first proximity switches and the at least one second proximity switch, wherein the controller is used to select a combination of the proximity switches, and control a reversing valve of the pumping device to reverse when the selected combination of the proximity switches detects the first oil cylinder piston or the second oil cylinder piston arrives at the preset position; and the combination of the proximity switches comprises one of the at least two first proximity switches and one of the at least one second proximity switch. By adopting the technical scheme, when one proximity switch damages, another proximity switch can replace the damaged one, thereby ensuring that the reverse control is maintained.

Description

technical field [0001] The present invention relates to the field of concrete pumping, in particular to a pumping reversing control method, device and system for a pumping device. Background technique [0002] Concrete pumping units are widely used in the construction industry. figure 1 Schematic diagram of the concrete pumping device. Such as figure 1 As shown, the concrete pumping device includes: a concrete pumping unit 1 and a delivery pipe (not shown) for delivering concrete to a pouring site. [0003] The concrete pumping unit includes: hydraulic pump 10, reversing valve 20, first hydraulic cylinder 31, second hydraulic cylinder 32, first concrete cylinder 41, second concrete cylinder 42, water tank 50, located in the first hydraulic cylinder The first oil cylinder piston 61 in the oil cylinder 31, the second oil cylinder piston 62 located in the second hydraulic oil cylinder 32, the first concrete cylinder piston 71 located in the first concrete cylinder 41, the fi...

AI Technical Summary

Problems solved by technology

[0006] However, the signal sensing surfaces of the two proximity switches in the existing pumping reversing control system are located in the hydraulic cylinder, and a high-pressure proximity switch must be used, which is expensive, and the high pressure in the hydraulic cylinder is easy to cause damage to the proximity switch

After the proximity switch is damaged, the pumping device cannot continue to work because it cannot change direction

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