CN215374752U

CN215374752U - Improved soil cutter device for accurately preparing undisturbed soil triaxial sample

Info

Publication number: CN215374752U
Application number: CN202121981471.7U
Authority: CN
Inventors: 奚邦禄; 许国娟; 张振华; 刘笑显; 李光子
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-12-31
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses an improved soil cutter device for accurately preparing a triaxial sample of undisturbed soil, which relates to the technical field of rock and water conservancy projects and mainly aims to solve the problem that the conventional improved soil cutter device for accurately preparing the triaxial sample of the undisturbed soil has larger error in manual sample cutting, and comprises a soil cutter frame, a soil cutting surface sliding device and a calibration wire saw, wherein the soil cutting surface sliding device is positioned on the soil cutter frame and comprises a second sliding chute, a plurality of sliding rods and a first sliding chute, the first sliding chute is positioned on the soil cutter frame, the second sliding chute is slidably connected in the first sliding chute, scales are designed on the second sliding chute, the plurality of sliding rods are slidably connected in the sliding chutes, fixing bolts and fixing nuts for fixing the positions of the sliding rods are also arranged in the soil cutting surface sliding device, the calibration wire saw is positioned on the sliding rods, the defect of relying on cutting experience is avoided, and the cut sample can be calibrated, the sample is more standard, the cutting surface is more accurate, and the cutting tool has the characteristic of simple operation.

Description

Improved soil cutter device for accurately preparing undisturbed soil triaxial sample

Technical Field

The utility model relates to the technical field of rock and soil engineering, in particular to an improved soil cutter device for accurately preparing a triaxial sample of undisturbed soil.

Background

In the research process of geotechnical engineering, various parameters of soil need to be tested, for example, a triaxial compression test can be used for measuring the shear strength of a soil sample under different stress paths and drainage conditions, the test is one of the most extensive tests in geotechnical engineering, the soil sample used in the test is generally cylindrical, and the cylindrical soil sample of undisturbed soil is generally obtained by cutting through a soil cutter.

The traditional soil cutting device can only determine the cutting surface according to the personal experience of a tester, so that certain errors can easily exist in the samples at different angles and heights instead of standard cylindrical samples, and the test result is influenced; secondly, the diameter of the traditional soil cutter needs to be measured at each angle and height by a vernier caliper continuously in the soil cutting process so as to avoid overlarge error, lower sample preparation efficiency and large time consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an improved soil cutter device for accurately preparing a triaxial sample of undisturbed soil, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present application provides the following technical solutions:

the utility model provides an improve soil cutter device for accurate preparation of undisturbed soil triaxial sample, includes soil cutter frame and is located soil cutting face sliding device and the calibration scroll saw on the soil cutter frame, and soil cutting face sliding device includes second spout, a plurality of slide bar and is located the first spout on the soil cutter frame, second spout sliding connection has the scale on the second spout in first spout, a plurality of slide bar sliding connection are in the spout, and still be provided with in the soil cutting face sliding device and be used for the fixed position's of slide bar fixing bolt and fixation nut, the calibration scroll saw is located the slide bar.

As a further aspect of the present application: the soil cutting device frame comprises an upper flat plate, a lower bottom plate, supporting rods, a rotating handle and a linkage rotating shaft, wherein the upper flat plate is connected with the lower bottom plate through a plurality of supporting rods, the rotating handle is connected with a fixed disc with a needle through the linkage rotating shaft, the movable sleeve of the fixed disc with the needle is arranged on the supporting rods, a soil sample is fixed on the fixed disc with the needle, the rotating handle drives the fixed disc with the needle to rotate around the supporting rods through the linkage rotating shaft, and then the soil sample in the fixed disc with the needle is driven to rotate.

As a still further aspect of the present application: the first sliding groove is located on the upper flat plate and the lower bottom plate, and the fixing bolt is connected to the supporting rod.

As a still further aspect of the present application: the second chute is provided with a fixed rod, the second chute is connected in the first chute through the fixed rod in a sliding manner, and the fixed nut is in threaded connection with the fixed rod.

As a still further aspect of the present application: the calibration jig comprises a slide bar, a calibration jig saw and a calibration jig, wherein the slide bar is fixedly connected with a connecting rod, the calibration jig saw is arranged in the middle of the connecting rod, and the calibration jig saw is internally provided with a jig saw.

As a still further aspect of the present application: still including cutting the soil pipe, cut the soil pipe including cutting soil pipe bottom, cylindrical sleeve and jacking bolt, cylindrical sleeve installs on cutting soil pipe bottom, jacking bolt swing joint is in cylindrical sleeve.

As a still further aspect of the present application: a groove is formed in the linkage rotating shaft, and the fixing disc with the needle is connected in the groove.

Compared with the prior art, the beneficial effects of this application are:

1. the defect of cutting by depending on experience is avoided, so that the cutting surface is more accurate, and the operation is simple;

2. the cut sample can be calibrated, so that the sample is more standard and meets the test requirements.

Drawings

Fig. 1 is a left side view of an improved soil cutter device for precision preparation of undisturbed soil triaxial samples in accordance with the present invention.

Fig. 2 is a top view of an improved soil cutter device for precision preparation of undisturbed soil triaxial samples in accordance with the present invention.

Fig. 3 is a front view of an improved soil cutter device for precisely preparing undisturbed triaxial samples in accordance with the present invention.

Fig. 4 is a front view of an improved soil cutter device for precisely preparing undisturbed triaxial samples in accordance with the present invention.

In the figure: 1-upper flat plate, 2-lower bottom plate, 3-support rod, 4-rotating handle, 5-linkage rotating shaft, 6-needle-containing fixed disc, 7-groove, 8-soil sample, 9-first chute, 10-fixed nut, 10-fixed rod, 12-second chute, 13-fixed bolt, 14-connecting rod, 15-sliding rod, 16-wire saw, 17-soil cutting tube bottom, 18-cylindrical sleeve and 19-jacking bolt.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 to 2, the present embodiment provides an improved soil cutter device for accurately preparing a triaxial undisturbed soil sample, including a soil cutter frame, a soil cutting surface sliding device and a calibration wire saw, wherein the soil cutting surface sliding device is located on the soil cutter frame, the soil cutting surface sliding device includes a second chute 12, a plurality of sliding rods 15 and a first chute 9 located on the soil cutter frame, the second chute 12 is slidably connected in the first chute 9, the second chute 12 is designed with scales, the plurality of sliding rods 1 are slidably connected in the chute 12, a fixing bolt 13 and a fixing nut 10 for fixing the position of the sliding rod 15 are further disposed in the soil cutting surface sliding device, and the calibration wire saw is located on the sliding rod 15.

Referring to fig. 1 to 2, in the above-mentioned technical solution, when the soil cutting surface sliding device is adjusted, the sliding rod 15 installed on the second sliding chute 12 needs to be moved to a suitable position, and then fixed by the fixing bolt 13, the soil cutting surface can be obtained; if soil sample 8 is great then can pass through spout 9 and outwards slide certain distance with the second spout 12 of taking the scale, otherwise if soil sample 8 is less then can pass through spout 9 and inwards slide with the second spout 12 of taking the scale, then use fixing nut 10 and dead lever 11 to screw up fixedly, improve on traditional soil cutter frame basis, add and cut soil face sliding device, devices such as calibration scroll saw, it is great to avoid among the traditional sample preparation testing personnel to rely on experience cutting cylindrical sample in the sample dimensional error, drawback such as irregularity, realize not unidimensional, the accurate preparation of shape triaxial sample.

Referring to fig. 1, further, the soil cutter frame includes an upper plate 1, a lower plate 2, support rods 3, a rotating handle 4 and a linkage rotating shaft 5, the upper plate 1 is connected to the lower plate 2 through the plurality of support rods 3, the rotating handle 4 is connected to a fixing disc 6 with needles through the linkage rotating shaft 5, the fixing disc 6 with needles is movably sleeved on the support rods 3, soil samples 8 are fixed on the fixing disc 6 with needles, the rotating handle 4 drives the fixing disc 6 with needles to rotate around the support rods 3 through the linkage rotating shaft 5, and further drives the soil samples 8 in the fixing disc 6 with needles to rotate, so that the samples 8 can freely rotate under the action of the rotating handle 4, after one surface is cut, the rotating handle 4 drives the fixing disc 6 with needles to rotate with the soil samples 8 at a certain angle through the linkage rotating shaft 5, the sliding rod 15 is moved again to determine a cutting surface, cutting is performed.

Referring to fig. 1, further, a groove 7 is formed in the linkage rotating shaft 5, and the fixing disc with needle 6 is connected in the groove 7.

Referring to fig. 2, further, the first sliding groove 9 is located on the upper plate 1 and the lower plate 2, and the fixing bolt 13 is connected to the supporting rod 3.

Referring to fig. 2 to 3, further, a fixing rod 11 is installed on the second chute 12, the second chute 12 is slidably connected in the first chute 9 through the fixing rod 11, and the fixing nut 10 is screwed on the fixing rod 11.

Referring to fig. 1 to 3, further, a connecting rod 14 is fixedly connected to the sliding rod 15, the calibration jig saw is installed at a middle position of the connecting rod 14, a jig saw 16 is arranged in the calibration jig saw, the above operations are repeated until the soil sample 8 meets the required size, then the connecting rod 14 is fixed on the sliding rod 15, the jig saw 16 is fixed at a middle position of the connecting rod 14, the soil sample 8 is driven to rotate by rotating the handle 4, and the wire saw 16 is used for observing whether the soil sample 8 is flat and smooth or not, and if the soil sample is not flat, the soil sample is leveled, so that the cylindrical sample is accurately prepared.

Referring to fig. 4, as an embodiment of the present application, the soil cutting pipe further includes a soil cutting pipe, the soil cutting pipe includes a soil cutting pipe bottom 17, a cylindrical sleeve 18 and a jacking bolt 19, the cylindrical sleeve 18 is mounted on the soil cutting pipe bottom 17, the jacking bolt 19 is movably connected in the cylindrical sleeve 18, after the cutting of the sample is completed, the sample higher than the standard height is placed in the soil cutting pipe, the diameter of the cylindrical sleeve 18 is adjusted to be slightly larger than the diameter of the standard sample, and the height of the sample is adjusted by adjusting the position of the jacking bolt 19, so that the accurate preparation of the height of the sample is realized.

When the soil cutting surface sliding device is used, firstly, the soil cutting surface sliding device is adjusted, the sliding rod 15 arranged on the second sliding chute 12 needs to be moved to a proper position, and then, the soil cutting surface can be obtained by fixing through the fixing bolt 13; if the soil sample 8 is large, the second chute 12 with the scales can slide outwards for a certain distance through the chute 9, otherwise, if the soil sample 8 is small, the second chute 12 with the scales can slide inwards through the chute 9, and then the fixing nut 10 and the fixing rod 11 are used for screwing and fixing; then the rotating handle 4 drives the fixed disc 6 with the needle to rotate around the supporting rod 3 through the linkage rotating shaft 5, and further drives the soil sample 8 in the fixed disc 6 with the needle to rotate, so that the sample 8 can freely rotate under the action of the rotating handle 4, after one surface is cut, the rotating handle 4 drives the fixed disc 6 with the needle to rotate a certain angle with the original soil sample 8 through the linkage rotating shaft 5, and the sliding rod 15 is moved again to determine a cutting surface for cutting; then repeating the operation until the soil sample 8 meets the required size, fixing the connecting rod 14 on the sliding rod 15, fixing the wire saw 16 at the right middle position of the connecting rod 14, driving the soil sample 8 to rotate by rotating the handle 4, simultaneously observing whether the soil sample 8 is flat and smooth by the wire saw 16, and leveling the soil sample if the soil sample is not flat; and finally, after the sample is cut, placing the sample higher than the standard height in the soil cutting pipe, adjusting the diameter of the cylindrical sleeve 18 to be slightly larger than that of the standard sample, and adjusting the height of the sample by adjusting the position of the jacking bolt 19.

In conclusion, the improved soil cutter frame is improved on the basis of the traditional soil cutter frame, the soil cutting surface sliding device, the wire saw calibrating device and the like are added, the defects that in the traditional sample preparation, a tester cuts a cylindrical sample by experience, the sample is large in size error, irregular and the like are overcome, the accurate preparation of triaxial samples with different sizes and shapes is realized, and the problem that the manual sample cutting error is large in the existing improved soil cutter device for accurately preparing the triaxial sample of original soil is solved.

It should be noted that, although the present specification describes embodiments, each embodiment does not include only a single technical solution, and such description of the specification is only for clarity, and those skilled in the art should take the specification as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art, and the above-mentioned embodiments only express the preferred embodiments of the technical solutions, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the claims of the technical solutions. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications, improvements and substitutions can be made, which are all within the protection scope of the present technical solution.

Claims

1. The utility model provides an improve soil cutter device that is used for original state soil triaxial sample accurate preparation, its characterized in that, includes soil cutter frame and is located soil cutting face sliding device and the calibration scroll saw on the soil cutter frame, and soil cutting face sliding device includes second spout, a plurality of slide bars and is located the first spout on the soil cutter frame, second spout sliding connection has the scale on the second spout in first spout, a plurality of slide bars sliding connection are in the spout, and still are provided with in the soil cutting face sliding device and are used for the fixed position's of slide bar fixing bolt and fixation nut, the calibration scroll saw is located the slide bar.

2. The improved soil cutter device for accurately preparing a triaxial sample of undisturbed soil according to claim 1, wherein the soil cutter frame comprises an upper plate, a lower plate, supporting rods, a rotating handle and a linkage rotating shaft, the upper plate is connected with the lower plate through a plurality of supporting rods, the rotating handle is connected with a fixed disc with a needle through the linkage rotating shaft, the movable sleeve of the fixed disc with the needle is arranged on the supporting rods, a soil sample is fixed on the fixed disc with the needle, and the rotating handle drives the fixed disc with the needle to rotate around the supporting rods through the linkage rotating shaft, so as to drive the soil sample in the fixed disc with the needle to rotate.

3. The improved soil cutter device for accurately preparing undisturbed soil triaxial sample according to claim 1, characterized in that the first sliding groove is positioned on the upper flat plate and the lower bottom plate, and the fixing bolt is connected on the supporting rod.

4. The improved soil cutter device for accurately preparing undisturbed soil triaxial sample according to claim 1, wherein the second chute is provided with a fixing rod, the second chute is slidably connected in the first chute through the fixing rod, and the fixing nut is in threaded connection with the fixing rod.

5. The improved soil cutter device for the precise preparation of triaxial undisturbed samples as claimed in claim 1 wherein a connecting rod is fixedly attached to said slide rod and said calibration wire saw is mounted at an intermediate position on said connecting rod and said calibration wire saw is internally provided with a wire saw.

6. The improved undisturbed soil tri-axial specimen preparation improving soil cutter device of claim 1 further comprising a soil cutting tube, wherein the soil cutting tube comprises a soil cutting tube bottom, a cylindrical sleeve and a jacking bolt, the cylindrical sleeve is mounted on the soil cutting tube bottom, and the jacking bolt is movably connected in the cylindrical sleeve.

7. The improved soil cutter device for accurately preparing undisturbed soil triaxial samples according to claim 2, characterized in that a groove is formed in the linkage rotating shaft, and the fixing disc with the needle is connected in the groove.