A coal mine rock mechanics parameter testing device

Abstract

The utility model discloses a coal mine rock mechanics parameter testing arrangement, including base, setting up the support of base and setting up pressure loading device on the support, the detachable setting of storage material cylinder is located the just below of pressure loading device on the base, and the execution end of pressure loading device can extend into storage material cylinder to exert pressure to the coal mine rock in storage material cylinder, still be provided with the pushing mechanism in storage material cylinder, and it is used for making the briquettes of compression molding and storage material cylinder separate. Through installing pushing mechanism in storage material cylinder, when testing is completed, makes the execution end of pressure loading mechanism and storage material cylinder separate, and the coal mine rock of compression molding in storage material cylinder moves a certain distance under the action of pushing mechanism, and can easily take out the coal mine rock in storage material cylinder.

Description

Technical Field

[0001] This utility model relates to the field of coal mine geological exploration technology, and in particular to a coal mine rock mechanical parameter testing device. Background Technology

[0002] When conducting research on coal mine rocks, it is often necessary to carry out uniaxial compression experiments or triaxial compression experiments in the laboratory to obtain rock mechanical parameters such as compressive strength, elastic modulus, and Poisson's ratio.

[0003] When testing the compressive strength of coal mine rock, a cylinder is typically installed on the equipment. A certain amount of coal mine rock is added into the cylinder, and the actuator of the pressure loading device extends into the cylinder to apply downward axial pressure to the coal mine rock for compressive strength testing. After the test, the actuator of the pressure loading device separates from the cylinder, and the compressed coal block needs to be removed. However, because the coal mine rock comes into close contact with the inner wall of the cylinder under pressure, it is difficult to remove the compressed coal mine rock after the test, thus affecting subsequent operations. Utility Model Content

[0004] This invention provides a coal mine rock mechanical parameter testing device to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A coal mine rock mechanical parameter testing device includes a base, a support mounted on the base, and a pressure loading device mounted on the support. A storage cylinder is detachably mounted on the base directly below the pressure loading device. The actuator of the pressure loading device can extend into the storage cylinder to apply pressure to the coal mine rock inside the storage cylinder. A pushing mechanism is also provided inside the storage cylinder for separating the pressed coal block from the storage cylinder.

[0007] Preferably, the storage cylinder is provided with a bottom plate and a limiting ring spaced from top to bottom. The outer periphery of the bottom plate abuts against the inner wall of the storage cylinder. The bottom plate and the storage cylinder enclose a receiving chamber for accommodating coal mine rocks. The pushing mechanism is connected to the bottom plate and is used to separate the bottom plate from the limiting ring.

[0008] Preferably, the pushing mechanism includes a spring connected to the side of the base plate near the limiting ring, the end of the spring away from the base plate being connected to the inner bottom wall of the storage cylinder, and the extension and retraction direction of the spring being parallel to the central axis of the storage cylinder.

[0009] Preferably, the pressure loading device is a hydraulic rod, and the base has a countersunk hole for placing the storage cylinder, the central axis of the countersunk hole being collinear with the central axis of the hydraulic rod.

[0010] Preferably, the diameter of the countersunk hole is the same as the outer diameter of the storage cylinder; the base is also provided with a fixing mechanism for fixing the storage cylinder in the countersunk hole.

[0011] Preferably, the base has a groove communicating with the countersunk hole; the fixing mechanism includes a fixing block slidably disposed in the groove, a vertical plate disposed in the groove, and a fixing bolt threadedly connected to the vertical plate, one end of the fixing bolt being rotatably connected to the fixing block, and the fixing bolt causing the fixing block to move closer to or further away from the storage cylinder placed in the countersunk hole.

[0012] Preferably, the pushing mechanism includes a first magnet disposed on the base plate and a second magnet disposed on the limiting ring, wherein the magnetism of the second magnet is the same as that of the first magnet.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model discloses a coal mine rock mechanical parameter testing device. By installing a pushing mechanism inside the storage cylinder, after the test is completed, the execution end of the pressure loading mechanism is separated from the storage cylinder. The coal mine rock that has been pressed and shaped inside the storage cylinder moves upward a certain distance under the action of the pushing mechanism, and the coal mine rock inside the storage cylinder can be easily taken out. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the storage cylinder according to Embodiment 1 of this utility model;

[0017] Figure 3 yes Figure 1 A magnified view of a section at point A in the middle;

[0018] Figure 4 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0019] In the diagram: 1-base; 2-bracket; 3-pressure loading device; 4-storage cylinder; 5-base plate; 6-limiting ring; 7-spring; 8-fixing block; 9-vertical plate; 10-fixing bolt; 11-first magnet; 12-second magnet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0021] Example 1

[0022] like Figures 1-3 The device for testing the mechanical parameters of coal mine rocks shown includes a base 1, a support 2 mounted on the base 1, and a pressure loading device 3 mounted on the support 2. A storage cylinder 4 is detachably installed on the base 1 directly below the pressure loading device 3. The actuating end of the pressure loading device 3 can extend into the storage cylinder 4 to apply pressure to the coal mine rocks inside the storage cylinder 4. A pushing mechanism is also installed inside the storage cylinder 4 to separate the pressed coal blocks from the storage cylinder 4.

[0023] Specifically, refer to Figure 2 In this embodiment, a bottom plate 5 and a limiting ring 6 are installed at intervals from top to bottom inside the storage cylinder 4. The limiting ring 6 is fixedly connected to the inner wall of the storage cylinder 4. The outer periphery of the bottom plate 5 abuts against the inner wall of the storage cylinder 4. The bottom plate 5 and the storage cylinder 4 enclose a accommodating chamber for accommodating coal mine rocks. The pushing mechanism is connected to the bottom plate 5 and is used to separate the bottom plate 5 from the limiting ring 6.

[0024] Specifically, refer to Figure 2 In this embodiment, the pushing mechanism includes a spring 7 connected to the side of the bottom plate 5 near the limiting ring 6. The end of the spring 7 away from the bottom plate 5 is connected to the inner bottom wall of the storage cylinder 4. The extension and retraction direction of the spring 7 is parallel to the central axis of the storage cylinder 4. When the spring 7 is in a balanced state, the bottom plate 5 is separated from the limiting ring 6.

[0025] Preferably, in this embodiment, the pressure loading device 3 is a hydraulic rod, and the base 1 has a countersunk hole (not shown in the figure) for placing the storage cylinder 4, the central axis of the countersunk hole being collinear with the central axis of the hydraulic rod. In other embodiments of this embodiment, the pressure loading device 3 may also be an electric actuator or other mechanism to apply pressure to the coal mine rock inside the storage cylinder 4.

[0026] Preferably, in order to prevent the storage cylinder 4 placed on the base 1 from radial displacement during the test, the diameter of the countersunk hole in this embodiment is the same as the outer diameter of the storage cylinder 4, and the base 1 is also equipped with a fixing mechanism for fixing the storage cylinder 4 in the countersunk hole.

[0027] Preferred, refer to Figure 1 and Figure 3In this embodiment, the base 1 is provided with a sliding groove (not marked in the figure) that communicates with the countersunk hole; the fixing mechanism includes a fixing block 8 that is slidably disposed in the sliding groove, a vertical plate 9 installed in the sliding groove, and a fixing bolt 10 that is threadedly connected to the vertical plate 9. One end of the fixing bolt 10 is rotatably connected to the fixing block 8, and the fixing bolt 10 allows the fixing block 8 to approach or move away from the storage cylinder 4 placed in the countersunk hole.

[0028] Working principle:

[0029] like Figure 1 As shown, before the test, the storage cylinder 4 is placed in the countersunk hole, and then the fixing bolt 10 is tightened to move the fixing block 8 towards the storage cylinder 4 until the fixing block 8 abuts against the outer wall of the storage cylinder 4. Then, a certain amount of coal mine rock can be added into the storage cylinder 4, and the pressure loading mechanism is then activated, allowing the actuator of the pressure loading mechanism to extend into the storage cylinder 4 and continue to press down. Figure 2 From the perspective of the pressure loading mechanism, after the actuator contacts the coal mine rock, it continues to press down. During this process, the bottom plate 5 moves downward until it abuts against the limit ring 6. Once the bottom plate 5 abuts against the limit ring 6, it can no longer move downward. At this point, the pressure loading mechanism applies a certain amount of pressure to the coal mine rock and maintains it for a certain period of time.

[0030] After the test is completed, the actuator of the pressure loading mechanism is separated from the storage cylinder 4. The coal rock that has been pressed into shape inside the storage cylinder 4 moves upward a certain distance under the elastic force of the spring 7, and the coal rock inside the storage cylinder 4 can be easily taken out.

[0031] Example 2

[0032] Reference Figure 4 The difference between this embodiment and Embodiment 1 is that the pushing mechanism includes a first magnet 11 disposed on the base plate 5 and a second magnet 12 disposed on the limiting ring 6. The magnetism of the second magnet 12 is the same as that of the first magnet 11.

[0033] After the test is completed, the actuator of the pressure loading mechanism is separated from the storage cylinder 4. The coal rock that has been pressed into shape in the storage cylinder 4 moves upward a certain distance under the repulsive force of the first magnet 11 and the second magnet 12, and the coal rock in the storage cylinder 4 can be easily taken out.

[0034] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A device for testing the mechanical parameters of coal mine rocks, characterized in that, The device includes a base (1), a bracket (2) mounted on the base (1), and a pressure loading device (3) mounted on the bracket (2). A storage cylinder (4) is detachably mounted on the base (1) directly below the pressure loading device (3). The actuating end of the pressure loading device (3) can extend into the storage cylinder (4) to apply pressure to the coal rock inside the storage cylinder (4). A pushing mechanism is also provided inside the storage cylinder (4) to separate the pressed coal block from the storage cylinder (4). The storage cylinder (4) is provided with a bottom plate (5) and a limiting ring (6) spaced from top to bottom. The limiting ring (6) is fixedly connected to the inner wall of the storage cylinder (4). The outer periphery of the bottom plate (5) abuts against the inner wall of the storage cylinder (4). The bottom plate (5) and the storage cylinder (4) enclose a accommodating chamber for accommodating coal mine rocks. The pushing mechanism is connected to the bottom plate (5) and is used to separate the bottom plate (5) from the limiting ring (6). The feeding mechanism is selected from one of the following two structures: Structure 1: Includes a spring (7) connected to the side of the base plate (5) near the limiting ring (6). The end of the spring (7) away from the base plate (5) passes through the limiting ring (6) and is connected to the inner bottom wall of the storage cylinder (4). The extension and retraction direction of the spring (7) is parallel to the central axis of the storage cylinder (4). When the spring (7) is in equilibrium, the base plate (5) is separated from the limiting ring (6). Structure 2: includes a first magnet (11) disposed on the base plate (5) and a second magnet (12) disposed on the limiting ring (6), wherein the magnetism of the second magnet (12) is the same as that of the first magnet (11).

2. The coal mine rock mechanical parameter testing device according to claim 1, characterized in that, The pressure loading device (3) is a hydraulic rod, and the base (1) has a countersunk hole for placing the storage cylinder (4), and the central axis of the countersunk hole is collinear with the central axis of the hydraulic rod.

3. The coal mine rock mechanical parameter testing device according to claim 2, characterized in that, The diameter of the countersunk hole is the same as the outer diameter of the storage cylinder (4); the base (1) is also provided with a fixing mechanism for fixing the storage cylinder (4) in the countersunk hole.

4. The coal mine rock mechanical parameter testing device according to claim 3, characterized in that, The base (1) has a groove that communicates with the countersunk hole; the fixing mechanism includes a fixing block (8) that is slidably disposed in the groove, a vertical plate (9) disposed in the groove, and a fixing bolt (10) that is threadedly connected to the vertical plate (9). One end of the fixing bolt (10) is rotatably connected to the fixing block (8), and the fixing bolt (10) causes the fixing block (8) to move closer to or further away from the storage cylinder (4) placed in the countersunk hole.

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