Leveling control loop and control method based on hydraulic control self-locking

Abstract

The invention discloses a leveling control loop and method based on hydraulic control self locking. The leveling control loop is applied to a hydraulic cylinder for leveling; the hydraulic cylinder comprises a rod cavity, a rodless cavity and hydraulic cylinder rods; the leveling control loop comprises a self locking leveling loop and a control loop; the self locking leveling loop comprises a hydraulic control self locking valve block, a first executing oil way, a second executing oil way, a third executing oil way and a mechanical self locking piece; the hydraulic control self locking valve block, the first executing oil way and the mechanical self locking piece are connected in sequence so that motion of the hydraulic cylinder rods can be limited; the hydraulic control self locking valveblock, the second executing oil way and the rodless cavity are connected in sequence so that the hydraulic cylinder rods can be controlled to stretch out; the hydraulic control self locking valve block, the third executing oil way and the rod cavity are connected in sequence so that the hydraulic cylinder rods can be controlled to draw back; and the control loop is connected with the hydraulic control self locking valve block so that the first executing oil way, the second executing oil way and the third executing oil way can be controlled to act on the hydraulic cylinder rods. According to the leveling control loop and method based on hydraulic control self locking, telescopic control over the multiple hydraulic cylinder rods is achieved with hydraulic pressure as driving force, and theleveling purpose is achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic control, in particular to a leveling control circuit and control method based on hydraulic control and self-locking. Background technique [0002] In actual production, there are many equipment or devices that need to be lifted using multi-point hydraulic lifting devices. In order to ensure that the equipment or devices that need to be lifted remain balanced after lifting, a locking mechanism is also set; and the current leveling with mechanical self-locking function The mechanical self-locking function of the system is mainly through the separate control of the mechanical structure or the design of a special oil cylinder. Traditionally, the locking and unlocking function of the hydraulic cylinder is realized by adding an additional power source control mechanism or designing a special oil cylinder or through additional electrical signal control; while the market There is no pure hydraulic circu...

AI Technical Summary

Problems solved by technology

[0002] In actual production, there are many equipment or devices that need to be lifted using multi-point hydraulic lifting devices. In order to ensure that the equipment or devices that need to be lifted remain balanced after lifting, a locking mechanism is also set; and the current leveling with mechanical self-locking function The mechanical self-locking function of the system is mainly through the separate control of the mechanical structure or the design of a special oil cylinder. Traditionally, the locking and unlocking function of the hydraulic cylinder is realized by adding an additional power source control mechanism or designing a special oil cylinder or through additional electrical signal control; while the market There has not been a purely hydraulic circuit to control the unlocking and locking of the mechanical locking device, so this problem needs to be solved urgently

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