Split type oil cylinder guide structure

Abstract

The invention discloses a split type oil cylinder guide structure, and belongs to the technical field of oil cylinders. The split type oil cylinder guide structure comprises a cylinder body, a pistonrod, guide sleeves, cylinder covers, a rod cavity oil port and a rodless cavity oil port; the guide sleeves sleeve outside the piston rod, and each guide sleeve comprises an inner guide ring and an outer guide ring; step-shaped spigots are formed in the inner wall of the outer end of the cylinder body, and the inner guide rings are provided with protruding steps which are matched with the spigotsof the cylinder body; and the inner sections of the inner guide rings are arranged between the inner wall of the cylinder body and the piston rod in a matched mode; the outer guide rings are arrangedbetween the inner walls of the spigots of the cylinder body and the piston rod in a matched mode; and the inner ends of the outer guide rings abut against the outer ends of the inner guide rings; step-shaped spigots are formed in the outer circumferential surfaces of the outer ends of the outer guide rings; and the inner walls of the cylinder covers are installed on the spigots of the outer guiderings. The guide sleeves are arranged in a split mode and are convenient to assemble. Through reasonable spigot design, the number of bolts is reduced, the difficulty of machining and assembling is lowered, and the unreliability caused by looseness and uneven stress of the bolts is eliminated.

Description

technical field [0001] The invention relates to an oil cylinder, in particular to a split type oil cylinder guide structure. Background technique [0002] At present, most hydraulic cylinders adopt the following guide sleeve structures: threaded guide sleeves, threaded glands, and ordinary key. A guide sleeve is provided between the front end of the cylinder and the piston rod, which is mainly used to seal and support the piston rod. It needs to be sealed and fixed with the cylinder. The fixing method is required to be reliable and easy to process and assemble. [0003] The guide sleeve in the existing related art mainly has the following disadvantages: 1. When the frictional force of piston rod retraction is large, the retaining ring of the snap ring bears a large load, and the screws fixing the snap ring are easily damaged; 2. In order to avoid damage, it is necessary to increase the size of related parts Improve the strength and increase the number of screws, but it will...

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