Chain link type rack push-pull rod

Abstract

The invention discloses a chain link type rack push-pull rod which comprises an upper cylinder, a horseshoe-shaped connector, a lower sleeve, a rack connection rod and a chuck. A notch is formed in the inner circular wall of the horseshoe-shaped connector. The upper port of the horseshoe-shaped connector is connected with the upper cylinder with a notch in the lower end. The lower port of the horseshoe-shaped connector is connected with the lower sleeve with a notch in the upper end to form a horseshoe-shaped hollow sleeve. A chain link type rack is arranged in the horseshoe-shaped hollow sleeve in a bent mode. The portion, located in the upper cylinder, of the chain link type rack and the portion, located in the lower sleeve, of the chain link type rack are meshed with a driving gear and driven gears arranged between the portion, located in the upper cylinder, of the chain link type rack and the portion, located in the lower sleeve, of the chain link type rack. The lower sleeve is a piston type telescopic sleeve. Compared with the prior art, the extension length of the chain link type rack is large in the use process, no locking pin mechanisms or hydraulic devices are needed, and the chain link type rack push-pull rod can be manually or electrically driven, can be longitudinally stretched out or drawn back to any position within the set range, and has the advantages of being simple in structure, convenient to operate, low in manufacturing cost, good in reliability and the like.

Description

technical field [0001] The invention relates to a chain-link type rack push-pull rod, which belongs to the technical field of push-pull transmission. Background technique [0002] At present, the known push-pull transmission device, a class is a rack-type hydraulic cylinder, which is composed of a cylinder body, a piston, a rack, a piston rod, a gear, a shaft, an adjusting screw, and a block; a class is a piston-type sleeve rack The push-pull rod is made of rack, sleeve rack, stop pin, spring, contact pressure lever, and screw. However, the telescopic length of the rack-type hydraulic cylinder is limited by the length of the cylinder body, and the telescopic length is short, and the rack piston rod cannot be bent and rolled; In the lock pin mechanism formed by the lever, the stop pin and the spring are easy to be worn and deformed during use, and are easily stuck when the load is large, resulting in telescopic reset failure. Contents of the invention [0003] The technic...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a chain-link type rack push-pull rod, which can not only extend and contract for a long time, but also does not need a locking mechanism and hydraulic equipment, and can be partially bent Winding can overcome the shortcomings of the existing push-pull transmission device, such as the short telescopic length, and the lack of easy wear, deformation and jamming of the lock pin at the joint between the rods

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