Mechanism and method for regulating coaxial ratchet of pipe cutter

Abstract

The invention relates to a mechanism used for adjusting coaxial ratchet of a pipe cutter and an adjusting method thereof. Three corners or four corners of the tank body of an oil cylinder are matched with a vertical guide rail and run vertically along the vertical guide rail; a tension spring is connected with the tank body of the oil cylinder and drives the oil cylinder to be reset; the two sides of the tank body of the oil cylinder are provided with synchronous ratchet clutching mechanisms which are used for locking the oil cylinder; and a cutting knife device is connected with the piston end of the oil cylinder. The mechanism has the advantages as follows: firstly, the adjusting speed is fast, and the adjustment is simple and convenient; when adjusting, a handle can be pulled by only one hand, so as to separate the meshed ratchets, thereby resetting the cutting knife device upwards automatically by effect of the tension spring; the other hand can press the cutting knife device downwards until the cutting knife wheel on the cutting knife device contacts with the external circular surface of the pipe to be cut; release the hand pulling the handle to lead the ratchet to mesh automatically by effect of the tension spring, thereby automatically locking the oil cylinder. Secondly, when the oil cylinder is locked, the ratchet mechanism has excellent mechanical rigidity when stressis increasing in the pipe cutting process, thereby reducing labour intensity of the user while improving pipe-cutting efficiency.

Description

Pipe cutting machine coaxial ratchet adjustment mechanism and adjustment method technical field The invention relates to a coaxial ratchet adjusting mechanism and an adjusting method of a pipe cutting machine capable of being quickly adjusted in place and rigidly locked, and belongs to the field of pipe cutting machine manufacturing. Background technique There are two structures for the adjustment of the working stroke of the existing cutting machine: one is driven by the hydraulic system, the power (jack) and the working point are respectively located at the two ends of a rotating fulcrum, and the hydraulic lever is pulled to push the large oil cylinder to make the other The working cutter wheel at one end is slowly approaching the workpiece, which not only slows down the process, but also affects work efficiency; the other is adjusted by the screw rod, which not only has poor structural rigidity, but also has very low efficiency in practical applications. Contents of th...

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Problems solved by technology

There are two structures for the adjustment of the working stroke of the existing cutting machine: one is driven by the hydraulic system, the power (jack) and the working point are respectively located at the two ends of a rotating fulcrum, and the hydraulic lever is pulled to push the large oil cylinder to make the other The working cutter wheel at one end is slowly approaching the workpiece, which not only slows the process, but also affects work efficiency; the other is adjusted by the screw rod, which not only has poor structural rigidity, but also has very low efficiency in practical applications.

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