A dual-stroke single-stage double-acting drill pipe clamping cylinder with adjustable stroke

Abstract

The invention belongs to the technical field of oil cylinders, and in particular relates to a double-stroke single-stage double-acting drill pipe clamping oil cylinder with adjustable strokes, which includes a primary motion assembly, a secondary motion assembly and a tertiary motion assembly. The motion assembly includes a primary piston rod, a primary front end cover, a primary piston and a primary guide sleeve, the secondary motion assembly includes a secondary piston, and the tertiary motion assembly includes a tertiary cylinder head, a tertiary Guide sleeve I, three-stage cylinder barrel and three-stage guide sleeve II; among them, the three-stage motion assembly constitutes the oil cylinder base, which is fixed to the structural parts of the whole machine through flanges, and is stationary relative to the whole machine. The secondary motion assembly can slide axially relative to the tertiary guide sleeve I in the tertiary motion assembly. The primary kinematic assembly can slide over the secondary kinematic assembly and the tertiary kinematic assembly. There is no priority in the operation of the guide stroke and the clamping stroke, and the action sequence is controllable, reliable, and stable.

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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