Rapid hydraulic oil cylinder

Abstract

The invention relates to a hydraulic oil cylinder, and particularly relates to a hydraulic oil cylinder provided with an inner cylinder body and an outer cylinder body and used for a log splitter. The invention aims to provide the rapid hydraulic oil cylinder with relatively high working efficiency and energy conservation. According to the improvement relatively to a common oil cylinder, the inner cylinder body (5) is fixedly arranged on a first piston (4); a second oil opening (51) is formed in the inner cylinder body; the inner cylinder body is further connected with an inner cylinder end cover (6); a second piston (7) is in sealing and sliding connection inside the first piston; a piston rod (8) passes through inner cylinder end cover and a front end cover (2), and is connected with the inner cylinder end cover and the front end cover (2) in a sealing and sliding manner; a one-way valve is arranged inside the first piston; an ejecting rod for ejecting the one-way valve when the first piston is located at the rearmost end inside the cylinder body is arranged between a one-way valve core (44) and a rear end cover (3); and a third oil opening (31) is formed in the rear end cover. The rapid hydraulic oil cylinder further comprises a first liquid control one-way valve (91) and a second liquid control one-way valve (92) which are mutually and inversely connected in parallel; and the positive conduction pressure difference of the first liquid control one-way valve and the one-way valve is large.

Description

technical field [0001] The invention relates to a hydraulic oil cylinder, in particular to a hydraulic oil cylinder with two inner and outer cylinder bodies for a log splitter. Background technique [0002] The wood splitter is an important auxiliary equipment in the wood processing industry. The hydraulically driven wood splitter generally uses a conventional hydraulic cylinder to work, and the hydraulic pump is driven by a power machine (such as an electric motor or a gasoline engine), and the power is transferred through the hydraulic system. Pass it to the chopper or push-pull frame, and rely on hydraulic power to slowly split the wood during the splitting process. For example, the application number is 201120498058.5, the authorization announcement number is CN202399351U, and the authorization announcement date is August 29, 2012. Chinese utility model patent Disclosed is a horizontal wood splitter. It is worth mentioning that the process of splitting does not rely on ...

AI Technical Summary

Problems solved by technology

Because the length of the wood to be split may vary, when the oil cylinder of the existing wood splitter is working, no matter how short the wood is, no matter how small the wood splitting force is, the piston rod reaches the point of force (that is, the splitting knife is in contact with the wood). Both reset and reset are operated in the conventional slow operation mode, which takes a long time, which not only has low work efficiency, but also wastes energy

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