Stroke-adjustable double-stroke single-stage double-acting drill rod clamping oil cylinder

Abstract

The invention belongs to the technical field of oil cylinders, and particularly relates to a stroke-adjustable double-stroke single-stage double-acting drill rod clamping oil cylinder which comprises a first-stage movement assembly, a second-stage movement assembly and a third-stage movement assembly, wherein the first-stage movement assembly comprises a first-stage piston rod, a first-stage front end cover, a first-stage piston and a first-stage guide sleeve; the second-stage movement assembly comprises a second-stage piston; and the third-stage movement assembly comprises a third-stage cylinder cover, a third-stage guide sleeve I, a third-stage cylinder barrel and a third-stage guide sleeve II. The third-stage movement assembly forms an oil cylinder base, is fixed on a structural part of a whole machine through a flange and is static relative to the whole machine. The second-stage movement assembly can axially slide relative to the third-stage guide sleeve I in the third-stage movement assembly. The first-stage movement assembly can slide on the second-stage movement assembly and the third-stage movement assembly. The operations of a guiding stroke and a clamping stroke are not prioritized, and the sequence of actions is controllable, reliable and free of stage disorder.

Description

technical field [0001] The invention belongs to the technical field of oil cylinders, and in particular relates to a double-stroke single-stage double-action drilling rod clamping oil cylinder with adjustable strokes. Background technique [0002] The deviation of the drilling position of the mining jumbo is the main cause of the deviation of the drilling. The key factor of the deviation of the drilling is the deviation of the drilling due to the fact that the drill holder is not at the guiding position of the drill pipe when the rock drilling equipment is drilling. Affects blasting effects. Therefore, as an important part of the mining trolley, the drill clamp plays an important role in improving the drilling accuracy and the work efficiency of loading and unloading rods. [0003] The drill pipe clamping cylinder is the key equipment of the drill clamp, through the movement of the piston rod in the cylinder, the drill pipe opening guide and the drill pipe clamping action a...

AI Technical Summary

Problems solved by technology

Therefore, plan 2 must have a large difference in the two-stage oil cylinder stroke (guiding stroke and clamping stroke), and it is difficult to meet the objective requirement that the difference between the guiding stroke and the clamping stroke of the clamping cylinder required by the mining trolley is not large.

In addition, the action sequence of Scheme 2 is uncontrollable. When using it, you can only extend the first-stage cylinder (guiding stroke) and then extend the secondary cylinder (clamping stroke). When used on a mining trolley, the operation is more cumbersome and the efficiency is low.

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