Taper sleeve type limiting device for lifting mechanism of roller-bit hole rig

Abstract

The invention provides a taper sleeve type limiting device for a lifting mechanism of a roller-bit hole rig, and in particular relates to a limiting device for limiting the up-and-down moving of the lifting mechanism of the roller-bit hole rig. The device comprises an upper fixing seat, a lower fixing seat, a steel wire rope, an outer sleeve, an inner sleeve and a travel switch; the upper fixing seat and the lower fixing seat are respectively arranged on the top part and the bottom part of a drilling stand; the steel wire rope vertically passes through the inner sleeve; the upper end of the steel wire rope is fixed to the upper fixing seat, and while the lower end of the steel wire rope is fixed to the lower fixing seat; at least one fastening screw is arranged at the lower part of the inner sleeve and fixed to the steel wire rope; the outer sleeve sleeves the inner sleeves; the travel switch is arranged on the outer sleeve, and a movable contact roller is joined with the inner sleeve. The taper sleeve type limiting device for the limiting mechanism of the robber-bit hole rig has the advantages that the rigid contact of the original limiting device is replaced by flexible contact, and therefore, the service life of the travel switch is greatly prolonged, the safety and reliability of the roller-bit hole rig in running are improved, the times of replacing the travel switch is reduced, the mounting is convenient, the safety accident can be avoided, the potential risk is removed, and meanwhile, the consumption of spare parts of the travel switch is decreased, and as a result, the production cost is decreased.

Description

technical field [0001] The invention belongs to mining equipment, in particular to a limit device for the up and down movement of the hoisting mechanism of a roller cone drilling rig. Background technique [0002] The roller cone drilling rig is a heavy-duty drilling equipment for open-pit mining. Its lifting mechanism is composed of a drill frame, a base, a DC motor, a reducer, a main clutch, a pneumatic tire brake, a closed chain, a gear and a rack, and a slewing mechanism is set on the base. , the slewing mechanism is connected with the drilling tool, and a pair of guide sprockets, a pair of deep groove large sprockets and a pair of small gears are installed on the slewing mechanism. The power is transmitted by the motor, through the reducer, the main clutch, the pneumatic tire brake, the closed chain, and the large deep groove sprocket to the pinion gears at both ends of the horizontal axis. The pinion gears roll along the racks on both sides of the stand, and the slewin...

AI Technical Summary

Problems solved by technology

The existing defect is that during the frequent lifting and lowering process of the roller cone drilling rig, the offside phenomenon often occurs due to the inertial effect, and the touch block is in rigid contact with the travel switch, which can easily cause damage to the travel switch and cause safety accidents. The service life of the switch is short, the frequency of replacement is high, the consumption of spare parts is large, the maintenance time is long, the work efficiency is low, the production cost is increased, and the normal production of the mine is affected. Extremely inconvenient and a potential safety hazard

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