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Lead screw drive mechanism for preparing indoor triaxial test original-state cohesive soil sample device in drill type

A triaxial test and transmission mechanism technology, applied in the direction of sampling, measuring devices, transmission devices, etc., can solve the problems of large resistance, large disturbance of soil samples, and difficulty in obtaining grade I undisturbed soil samples, so as to reduce disturbance and The effect of small resistance

Inactive Publication Date: 2019-08-16
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a series of "disturbances" in this sample preparation method. The sample preparation tube, inner tube and outer tube of the existing sample preparation device rotate in the same direction, which has large resistance and great disturbance to the soil sample, making it difficult to obtain grade I undisturbed soil. sample

Method used

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  • Lead screw drive mechanism for preparing indoor triaxial test original-state cohesive soil sample device in drill type
  • Lead screw drive mechanism for preparing indoor triaxial test original-state cohesive soil sample device in drill type
  • Lead screw drive mechanism for preparing indoor triaxial test original-state cohesive soil sample device in drill type

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Embodiment Construction

[0030] refer to Figure 1 to Figure 17 The embodiment of the screw transmission mechanism of the drilling type preparation indoor triaxial test undisturbed cohesive soil sample device of the present invention will be further described.

[0031] A screw transmission mechanism for a drill-type preparation device for an indoor triaxial test undisturbed cohesive soil sample, including an outer frame 29, a push frame 20, an inner tube 5, an outer tube 11 and a sample preparation tube 1, the inner tube 5 The top surface of the housing is provided with a receiving groove, and the opening of the receiving groove is provided with a connecting thread, and the first tapered roller bearing 7, the slotted lock nut 8, the first thrust The bearing 9 and the inner tube connector 10 screwed to the opening of the receiving tank, the sample preparation tube 1 is arranged in the inner tube 5 and the top is provided with a screw joint, and the screw joint passes through the first tapered roller be...

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Abstract

The invention discloses a lead screw drive mechanism for preparing an indoor triaxial test original-state cohesive soil sample device in drill type. The lead screw drive mechanism comprises an outer frame, a pushing frame, an inner tube, an outer tube and a sample preparation tube; a holding slot is arranged on a top surface of the inner tube, the connection thread is arranged at an opening of theholding slot; a first conical roller bearing, a slotting locking nut, a first thrust bearing and an inner tube connector are orderly arranged in the holding slot; the sample preparation tube is arranged in the inner tube and a screw joint is arranged on the sample preparation tube; the screw joint is screwed with the slotting locking nut; the ball screw nut is arranged on the outer frame, the ball screw is arranged in the ball screw nut, one end of the ball screw is connected with a handle, the other end is in threaded connection with the inner tube connector, and the ball screw is screwed with a locking flat nut. The invention provides a lead screw drive mechanism for preparing the indoor triaxial test original-state cohesive soil sample device in drill type, wherein the lead screw drivemechanism can reduce soil sample disturbance.

Description

technical field [0001] The invention relates to the field of indoor geotechnical test devices, and more particularly relates to a screw drive mechanism for a drill-type device for preparing an undisturbed cohesive soil sample for an indoor triaxial test. Background technique [0002] According to the standard of soil engineering test method (GB / T50123-1999) and "Soil Engineering Test Regulations" [0003] (YS / T5225-2016), using the cutting method to prepare the undisturbed cohesive soil samples for indoor triaxial tests. The specific method is as follows: 1) For soft soil samples, first use a wire saw or a soil cutter to cut a soil column slightly larger than the specified size, put it between the upper and lower discs of the soil cutting plate, and use a wire saw or a soil cutter to tighten it. Lean on the side plate, carefully cut from top to bottom, and turn the disc while cutting, until the soil sample is cut to the specified diameter. Disturbance should be avoided whe...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/36F16H57/08F16H25/22
CPCF16H25/2204F16H57/08G01N1/286G01N1/36
Inventor 戚国庆
Owner SHAOXING UNIVERSITY
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