Speed adjustable and automatic feeding device for taking core from intact loess hollow cylindrical sample

Abstract

The invention discloses a speed adjustable and automatic feeding device for taking a core from an intact loess hollow cylindrical sample. The device comprises a base, rectangular guide rails, a top beam, a tooth bar drill pipe, a drill bit, a transmission gear support, a transmission gear, an elevating stepless speed regulation motor, a gear, a rotary stepless speed regulation motor, and a sample table. The rectangular guide rails are vertically and symmetrically fixed on two sides of the base. Two ends of the top beam are fixed on two rectangular guide rails. The drill bit is arranged on the tail end of the tooth bar drill pipe. The transmission gear support is installed on the top beam. The transmission gear is installed on the transmission gear support and is engaged with the tooth bars of the tooth bar drill pipe. The elevating stepless speed regulation motor is installed on the top beam, and the gear is engaged with the transmission gear. The rotary stepless speed regulation motor is fixed on the center of the base. The sample table is fixed on the output shaft of the rotary stepless speed regulation motor. The device has the advantages of simple structure, convenient operation, and good using effect.

Description

technical field [0001] The invention relates to the technical field of coring equipment for hollow cylindrical samples, in particular to a coring device for undisturbed loess hollow cylindrical samples with adjustable speed and automatic feeding. Background technique [0002] When the existing undisturbed loess hollow cylinder sample coring equipment drills the core, the drill bit needs to be fed manually. Due to the high sample height and the fragile nature of the loess itself, the drill bit feed rate needs to be as small as possible, which leads to the consumption of the test work. The time is long and the efficiency is very low; and the control of manual feed depends more on the experience of the operator, and the control accuracy is poor. In addition, the existing undisturbed loess hollow cylinder sample coring equipment adopts a cantilever beam in the design of the drill bit support part. When the core drilling stroke is long, the drill bit is prone to eccentricity, res...

AI Technical Summary

Problems solved by technology

[0002] When the existing undisturbed loess hollow cylinder sample coring equipment drills the core, the drill bit needs to be fed manually. Due to the high sample height and the fragile nature of the loess itself, the drill bit feed rate needs to be as small as possible, which leads to the consumption of the test work. The time is long and the efficiency is very low; and the control of manual feed depends more on the experience of the operator, and the control accuracy is poor

In addition, the existing undisturbed loess hollow cylinder sample coring equipment adopts a cantilever beam in the design of the drill bit support part. When the core drilling stroke is long, the drill bit is prone to eccentricity, resulting in damage to the sample; the guide rail uses round steel, which is not conducive to different heights. Precise positioning of the drill bit support when drilling cores

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