Cardan shaft sealing sleeve of geological prospecting screw drill

Abstract

The invention relates to the technical field of geological prospecting equipment, and discloses a cardan shaft sealing sleeve of a geological prospecting screw drill. The cardan shaft sealing sleeve comprises a shaft body, ball covers are fixedly connected to the left end and the right end of the shaft body, arc-shaped covers are clamped in the ball covers, telescopic supporting rods are hinged tothe ends, close to the shaft body, of the arc-shaped covers, a fixing frame body is movably connected to the outer portions of the telescopic supporting rods, and centrifugal blocks are elastically connected to the ends, close to the shaft body, of the arc-shaped covers through a first spring. According to the cardan shaft sealing sleeve of the geological prospecting screw drill, the change of the protection position is adjusted according to the working condition of the shaft body, the effect of telescopically sealing and protecting the exterior of the shaft body is achieved, gravel and muddywater are prevented from entering the shaft body and accelerating abrasion, when the interior of the shaft body is abraded suddenly and violently, internal lubricating oil is extruded by a movable block to enter the shaft body rotating joint, the effect of facilitating automatic lubrication in the drilling process is achieved, and the situation that working is stopped, taking out is conducted forlubrication, thus time is consumed, and efficiency is reduced is avoided.

Description

technical field [0001] The invention relates to the technical field of geological exploration equipment, in particular to a universal shaft sealing sleeve of a screw drilling tool for geological exploration. Background technique [0002] Geological exploration is the investigation and research of geological exploration and detection through various means and methods, to determine the appropriate bearing layer, to determine the foundation type and to calculate the basic parameters according to the bearing capacity of the bearing layer. The radial shaft is usually directly installed on the screw drilling tool, and the cardan shaft is directly in contact with the soil and sand in the geological soil layer. When the screw drilling tool is working, the cardan shaft is very easy to wear, and for the retractable universal shaft The sealing performance of the shaft and the sealing sleeve is not good, which leads to the easy entry of soil and sand into the shaft body to accelerate th...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a universal shaft seal sleeve of a geological exploration screw drilling tool, which has the advantages of a retractable rotary seal to protect the outside of the shaft body and facilitates automatic lubrication during drilling to improve work efficiency, and solves the problem of the shaft body Problems with direct exposure to accelerated wear and having to pause to remove lubrication during drilling

Images