CN211453192U

CN211453192U - Portable in-situ direct shear apparatus for field

Info

Publication number: CN211453192U
Application number: CN201922350547.5U
Authority: CN
Inventors: 杨苑君; 岳亮亮; 陈晨; 尹捷; 赵熹
Original assignee: Yunnan Agricultural University
Current assignee: Yunnan Agricultural University
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-08
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses an open-air portable normal position staight scissors appearance, which comprises a frame, the inside of frame is provided with the slip shearing box, the inside of slip shearing box is provided with the protecting sheathing box, the upper end of protecting sheathing box is provided with heavy burden iron plate, one side of frame is provided with the thrust worm gear case, the rear end of thrust worm gear case is provided with limit base. Open-air portable normal position staight scissors appearance, be equipped with heavy burden iron plate, protecting sheathing box, spacing base and frame etc, can make whole volume littleer to replace traditional jack and anchor rod by heavy burden iron plate, carry when can be more convenient for in-service use, spacing base can effectively avoid thrust turbine case pivoted easy backward moving simultaneously, in addition protecting sheathing box's use, can avoid installing the instrument, the in-process of repairing the soil block destroys the soil block, finally make actual measuring result more accurate, bring better use prospect.

Description

Portable in-situ direct shear apparatus for field

Technical Field

The utility model relates to a staight scissors appearance field, in particular to open-air portable normal position staight scissors appearance.

Background

The direct shear apparatus is an apparatus for measuring the shear strength of soil indoors, and is called as a direct shear apparatus for short, when in measurement, a soil sample is placed between an upper metal box and a lower metal box of the direct shear apparatus, a certain vertical pressure is applied to the soil sample through a pressure transmission plate and a ball, then a horizontal thrust is applied to the lower box, so that the sample is subjected to shear displacement along the horizontal contact surface of the upper box and the lower box until the sample is damaged, and a constant-speed shear strain method is usually adopted, and the method is called as strain control shearing; present staight scissors appearance has certain drawback when using, firstly, jack and anchor rod are firstly too heavy in operation process, open-air experiment is removed and is all very difficult with the installation, secondly destroy original clod easily, influence actual measuring result, secondly, the instrument moves backward easily when gear rotates, in addition if direct according to the shape of shearing the box dig the clod, destroy the clod easily when the cover is entered, the use of giving people has brought certain adverse effect, for this reason, we provide open-air portable normal position staight scissors appearance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides open-air portable normal position staight scissors appearance, can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

open-air portable normal position staight scissors appearance, which comprises a frame, the inside of frame is provided with the slip shearing box, the inside of slip shearing box is provided with the protecting sheathing box, the upper end of protecting sheathing box is provided with heavy burden iron plate, one side of frame is provided with the thrust worm gear case, the rear end of thrust worm gear case is provided with spacing base, one side surface of slip shearing box is provided with thrust sensor, the opposite side of slip shearing box is provided with the percentage table.

Preferably, the thrust sensor is located between the thrust worm gear case and the sliding shearing box, and the thrust sensor is movably connected with an output shaft of the thrust worm gear case.

Preferably, one side of the rack is provided with a digital display tester, the thrust sensor is connected with the digital display tester, the dial indicator is positioned between the sliding shearing box and the thrust worm gear box, and the indicator head of the dial indicator is in contact with the outer surface of the rear end of the sliding shearing box.

Preferably, a pulley assembly is arranged between the sliding shearing box and the rack, and the outer surfaces of the two sides of the sliding shearing box are movably connected with the outer surface of the rack through the pulley assembly.

Preferably, the outer surfaces of the two sides of the thrust worm gear box are respectively provided with an operation turntable, and a gear transmission set is arranged in the thrust worm gear box.

Compared with the prior art, the utility model discloses following beneficial effect has: this appearance is cut directly to open-air portable normal position, heavy burden iron plate through setting up, the protecting sheathing box, spacing base and frame etc, can make whole volume littleer, and replace traditional jack and anchor pole by heavy burden iron plate, carry when can be more convenient for in-service use, simultaneously spacing base can effectively avoid thrust turbine case to move backward easily when rotating, in addition the use of protecting sheathing box, can avoid at the installation instrument, the in-process of repairing the soil block destroys the soil block, finally make actual measuring result more accurate. The whole field portable in-situ direct shear apparatus is simple in structure, convenient to operate and better in use effect compared with the traditional mode.

Drawings

Fig. 1 is the overall structure schematic diagram of the field portable in-situ direct shear apparatus of the utility model.

Fig. 2 is a side view of the limiting base 4 in fig. 1 of the field portable in-situ direct shear apparatus of the present invention.

In the figure: 1. a thrust worm gear case; 2. a frame; 3. sliding the shear box; 4. a limiting base; 5. A weight bearing iron block; 6. a protective sleeve box; 7. a thrust sensor; 8. and (4) a dial indicator.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-2, the field portable in-situ direct shear apparatus comprises a frame 2, a sliding shear box 3 is arranged inside the frame 2, a protective sleeve box 6 is arranged inside the sliding shear box 3, a heavy iron block 5 is arranged at the upper end of the protective sleeve box 6, a thrust worm gear box 1 is arranged on one side of the frame 2, a limiting base 4 is arranged at the rear end of the thrust worm gear box 1, a thrust sensor 7 is arranged on the outer surface of one side of the sliding shear box 3, and a dial indicator 8 is arranged on the other side of the sliding shear box 3.

Further, the thrust sensor 7 is located between the thrust worm gear case 1 and the sliding shearing box 3, and the thrust sensor 7 is movably connected with an output shaft of the thrust worm gear case 1.

Further, one side of frame 2 is provided with the digital display tester, and thrust sensor 7 is connected with the digital display tester, and percentage table 8 is located between slip shear box 3 and the thrust worm gear case 1, and the gauge outfit of percentage table 8 and the rear end surface contact of slip shear box 3.

Further, be provided with loose pulley assembly between slip shear box 3 and the frame 2, the both sides surface of slip shear box 3 all is through loose pulley assembly and frame 2's surface swing joint.

Furthermore, the outer surfaces of two sides of the thrust worm gear case 1 are respectively provided with an operation turntable, and a gear transmission set is arranged in the thrust worm gear case 1.

It should be noted that, the utility model discloses a field portable normal position staight scissors appearance need carry out the preparation work in place before the use, and concrete operating procedure is as follows:

firstly, excavating a test pit with the length of 2.1 meters and the width of 0.9 meter, and reserving test block soil with the thickness of 17x17x15 centimeters;

secondly, placing the prepared earthwork-shaped protective sleeve box 6 on the top of the test block soil, pressing or knocking in the test block, and scraping waste soil outside the box while pressing the edges until the shear surface is finished;

thirdly, after the terrace is trimmed, the sliding shearing box 3 and the rack 2 are sleeved in test block soil with the protective sleeve box 6;

fourthly, after the top surface of the test block soil is planed, a thrust sensor 7 is installed at the front end of the sliding shearing box 3;

fifthly, stacking the weight iron blocks 5 above according to actual requirements;

sixthly, inserting signal line plugs into the thrust sensor 7 and the back socket of the digital display tester, pressing an instrument ON key, and starting after 10 seconds when the number presents 00.00 KN;

seventhly, placing the thrust turbine box 1, and clamping the rear end of the box bottom in the limiting base 4;

eighthly, adsorbing the magnetic gauge stand on the rear rack 2, installing a dial indicator 8, and contacting the gauge head of the dial indicator 8 with the rear end of the sliding shearing box 3;

ninthly, after the operation turntable of the forward rotation thrust worm gear box 1 is in contact with the sensor, the forward rotation hand wheel rotates at a speed of 5 seconds (or the rotating speed is adjusted according to actual requirements) to implement horizontal thrust, meanwhile, digital display tester digital change is observed, when a peak value appears, the peak value number is recorded, then the dial indicator 8 displacement number is recorded, namely the displacement value during shearing loss, and the test is finished.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Open-air portable normal position staight scissors appearance, including frame (2), its characterized in that: the utility model discloses a shear rack, including frame (2), slip shear box (3), the inside of slip shear box (3) is provided with protecting box cover (6), the upper end of protecting box cover (6) is provided with heavy burden iron plate (5), one side of frame (2) is provided with thrust worm gear case (1), the rear end of thrust worm gear case (1) is provided with limit base (4), one side surface of slip shear box (3) is provided with thrust sensor (7), the opposite side of slip shear box (3) is provided with percentage table (8).

2. The field portable in-situ direct shear apparatus of claim 1, wherein: the thrust sensor (7) is positioned between the thrust worm gear case (1) and the sliding shearing box (3), and the thrust sensor (7) is movably connected with an output shaft of the thrust worm gear case (1).

3. The field portable in-situ direct shear apparatus of claim 1, wherein: the digital display shear box is characterized in that a digital display tester is arranged on one side of the rack (2), the thrust sensor (7) is connected with the digital display tester, the dial indicator (8) is located between the sliding shear box (3) and the thrust worm gear box (1), and the gauge head of the dial indicator (8) is in contact with the outer surface of the rear end of the sliding shear box (3).

4. The field portable in-situ direct shear apparatus of claim 1, wherein: a pulley assembly is arranged between the sliding shearing box (3) and the rack (2), and the outer surfaces of the two sides of the sliding shearing box (3) are movably connected with the outer surface of the rack (2) through the pulley assembly.

5. The field portable in-situ direct shear apparatus of claim 2, wherein: the outer surfaces of two sides of the thrust worm gear box (1) are respectively provided with an operation turntable, and a gear transmission set is arranged in the thrust worm gear box (1).