Rock sample shearing test device

Abstract

The utility model discloses a rock sample shearing test device which comprises a bearing platform, two wallboards are fixedly arranged on the bearing platform, a base is arranged between the two wallboards and used for placing a rock sample, a transverse pressurizing oil cylinder is installed on the inner side face of one wallboard, a ballast head is installed on a piston rod of the transverse pressurizing oil cylinder, and the ballast head is arranged on the piston rod of the transverse pressurizing oil cylinder. A bearing platform is installed on the inner side face of one wall plate and used for loading transverse pressure on the rock sample, a bearing head is installed on the inner side face of the other wall plate and makes contact with the rock sample, the ballast head and the bearing head are arranged in an up-and-down or front-and-back staggered mode, and an installation plate is arranged above the base and connected with the bearing platform through a stand column. A vertical pressurizing oil cylinder is mounted on the inner side surface of the mounting plate, and a ballast plate is mounted on a piston rod of the vertical pressurizing oil cylinder and is used for loading vertical pressure to the rock sample. The device is simple in structure, low in manufacturing cost, high in practicability and capable of improving the stability of a shear test.

Description

Technical Field

[0001] The utility model relates to the technical field of rock mechanics tests, in particular to a rock sample shear test device. Background Art

[0002] Shear test is one of the most important basic tests in geotechnical engineering. It is an indispensable test method for geotechnical engineers to examine the engineering mechanical properties of rock or soil, seek reasonable design parameters, and conduct theoretical research. Specifically, the rock is made into a sample, and then a shear test machine is used to perform a shear test on the rock sample. Existing shear test machines have many problems. Most of them have complex structures, high manufacturing costs, poor practicality, and poor stability during the test.

[0003] In view of this, it is necessary to improve the existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide a rock sample shear test device, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted is as follows:

[0005] A rock sample shear test device comprises a bearing platform, on which two wall panels are fixedly arranged symmetrically on the left and right, a base is arranged between the two wall panels, the base is used to place the rock sample, a transverse pressure cylinder is installed on the inner side of one wall panel, a ballast head is installed on the piston rod of the transverse pressure cylinder, and the rock sample is loaded with a transverse pressure, a bearing head is installed on the inner side of the other wall panel, the bearing head is in contact with the rock sample, the ballast head and the bearing head are arranged alternately up and down or front and back, a mounting plate is arranged above the base, the mounting plate and the bearing platform are connected by a column, a vertical pressure cylinder is installed on the inner side of the mounting plate, a ballast plate is installed on the piston rod of the vertical pressure cylinder, and the rock sample is loaded with a vertical pressure.

[0006] Preferably, there are four upright posts, and the four upright posts are installed in one-to-one correspondence with the four corners of the mounting plate.

[0007] Preferably, four L-shaped limiting blocks are provided on the base and arranged in a square shape for limiting the position of the rock sample.

[0008] Preferably, the top ends of the front sides of the two wall panels are fixedly connected via a first connecting rod.

[0009] Preferably, the top ends of the rear sides of the two wall panels are fixedly connected via a second connecting rod.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model discloses a rock sample shear test device, which has simple structure, low manufacturing cost and strong practicability and can improve the stability of the shear test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model device.

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model device.

[0015] In the figure: 1, table; 2, support leg; 3, wall panel; 4, reinforcing rib plate; 5, first connecting rod; 6, second connecting rod; 7, base; 8, rock sample; 9, horizontal pressure cylinder; 10, ballast head; 11, bearing head; 12, mounting plate; 13, column; 14, vertical pressure cylinder; 15, ballast plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1 to Figure 2 As shown, a preferred embodiment of the utility model provides a rock sample shear test device, which includes a load-bearing platform, and the load-bearing platform includes a table top 1 and legs 2 supporting the table top 1. Two wall panels 3 are fixedly arranged on the table top 1 of the load-bearing platform in a bilaterally symmetrical manner, and a reinforcing rib plate 4 is arranged between the outer side surface of each wall panel 3 and the table top. In addition, the top ends of the front sides of the two wall panels 3 are fixedly connected by a first connecting rod 5, and the top ends of the rear sides of the two wall panels 3 are fixedly connected by a second connecting rod 6, so as to improve the stability of the entire device.

[0019] A base 7 is fixedly provided on the table top 1 and between the two wall panels 3. The base 7 is used to place a rock sample 8. The rock sample 8 is in a cube shape. Four L-shaped limit blocks (not shown in the figure) are provided on the base 7 and arranged in a square for limiting the rock sample 8.

[0020] A transverse pressure cylinder 9 is installed on the inner side of the left wall panel, and a ballast head 10 is installed on the piston rod of the transverse pressure cylinder 9, which is used to apply transverse pressure to the rock sample 8. A bearing head 11 is installed on the inner side of the right wall panel, and the bearing head 11 contacts the rock sample 8. The ballast head 10 and the bearing head 11 are arranged vertically or front and back alternately. The utility model preferably adopts an up-and-down alternate arrangement.

[0021] A mounting plate 12 is arranged above the base 7, and the mounting plate 12 is connected to the bearing platform through four columns 13, and the four columns 13 are installed one by one corresponding to the four corners of the mounting plate 12. A vertical pressure cylinder 14 is installed on the inner side of the mounting plate 12, and a ballast plate 15 is installed on the piston rod of the vertical pressure cylinder 14, which is used to load vertical pressure on the rock sample 8.

[0022] The prepared rock sample 8 is placed on the base 7, and the vertical pressure cylinder 14 is started to apply a vertical pressure to the rock sample 8. Then, the transverse pressure cylinder 9 is started to apply a shear force to the rock sample 8 under the joint action of the ballast head 10 and the bearing head 11, and the magnitude of the shear force of the rock sample under different vertical pressures is studied.

[0023] In summary, the rock sample shear test device described in the embodiment of the utility model has a simple structure, low manufacturing cost, strong practicality, and can improve the stability of the shear test.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A rock sample shear test device, characterized in that: It includes a bearing platform, on which two wall panels are symmetrically fixed, a base is arranged between the two wall panels, the base is used to place rock samples, a transverse pressure cylinder is installed on the inner side of one wall panel, a ballast head is installed on the piston rod of the transverse pressure cylinder, and is used to load transverse pressure on the rock sample, a bearing head is installed on the inner side of the other wall panel, the bearing head is in contact with the rock sample, the ballast head and the bearing head are arranged alternately up and down or front and back, a mounting plate is arranged above the base, the mounting plate and the bearing platform are connected by a column, a vertical pressure cylinder is installed on the inner side of the mounting plate, a ballast plate is installed on the piston rod of the vertical pressure cylinder, and is used to load vertical pressure on the rock sample.

2. A rock sample shear test device according to claim 1, characterized in that: There are four upright posts, which are installed in one-to-one correspondence with the four corners of the mounting plate.

3. A rock sample shear test device according to claim 1, characterized in that: Four L-shaped limit blocks are arranged on the base in a square shape and are used to limit the rock samples.

4. A rock sample shear test device according to claim 1, characterized in that: The top ends of the front sides of the two wall panels are fixedly connected via a first connecting rod.

5. A rock sample shear test device according to claim 1, characterized in that: The top ends of the rear sides of the two wall panels are fixedly connected via a second connecting rod.

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