Combined-type self-locking-ratchet hydraulic oil cylinder

Abstract

The invention relates to the technical field of hydraulic power equipment, in particular to a combined-type self-locking-ratchet hydraulic oil cylinder, and aims to solve the technical problem that an existing oil cylinder is poor in locking reliability and low in output force. The combined-type self-locking-ratchet hydraulic oil cylinder comprises a main cylinder barrel, an auxiliary cylinder barrel, a main piston and an auxiliary piston, the main cylinder barrel and the auxiliary cylinder barrel are in left-right abutting connection, the main piston and the auxiliary piston are arranged in the main cylinder barrel and the auxiliary cylinder barrel respectively, inner cavities of the main cylinder barrel and the auxiliary cylinder barrel are separated by a left cylinder cover of the main cylinder barrel in a left-right manner, the right end of the main piston extends outside the main cylinder barrel, ratchet strips are formed on the periphery of the right portion of the main piston, ratchets matched with the ratchet strips are arranged on the main cylinder barrel in a pivoted manner, and the auxiliary piston is coaxial with the main piston and closely abutted against the left end of the same. The combined-type self-locking-ratchet hydraulic oil cylinder is reliable in locking and high in output force.

Description

technical field [0001] The invention relates to hydraulic power equipment technology, in particular to a combined ratchet self-locking hydraulic oil cylinder technology. Background technique [0002] The hydraulic cylinder is a device driven by hydraulic pressure to output power. It is mainly composed of a cylinder and a piston. The inner cavity of the cylinder is closed as a whole, and the piston is installed in the inner cavity of the cylinder in a sliding fit. working cavity. When the hydraulic cylinder is working, one of the working chambers enters the oil, and the other works to return the oil, which can push the piston to slide and output power. [0003] When the hydraulic cylinder is working, in order to ensure the safety of the hydraulic cylinder, it is usually necessary to configure a hydraulic valve on the inlet and outlet hydraulic lines of the hydraulic cylinder to lock the hydraulic cylinder to ensure that the hydraulic cylinder will not be unstable due to syst...

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Problems solved by technology

However, this method of using a hydraulic valve to lock the hydraulic cylinder has high requirements on the accuracy of the hydraulic valve, and there is internal interference in the spool of the hydraulic valve, so it is impossible to achieve absolute locking of the hydraulic cylinder, and there is a defect of poor locking reliability.

[0004] In addition, the output force of existing hydraulic cylinders is relatively low. In some working conditions that require high output force (such as civil foundation pit construction), multiple hydraulic cylinders are often required to cooperate with each other to output power at the same time. Therefore, the existing hydraulic cylinders The output power still needs to be improved

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