Heating device for high-temperature rock mechanical test

Abstract

The utility model provides a heating device for a high-temperature rock mechanical test. The heating device comprises a shell, a supporting plate, an electric heating wire, a mechanical check meter, a lead screw driven by a motor, sliding blocks arranged at the two ends of the lead screw and clamping plates connected with the sliding blocks. The two clamping plates are oppositely arranged above the supporting plate. A plurality of grooves are formed in the clamping plate, springs are arranged in the grooves, one ends of the springs abut against the clamping plate, and the other ends of the springs are connected with limiting blocks. The extension direction of the spring is the same as that of the lead screw. The sliding block is in threaded connection with the lead screw, and the thread directions of the two ends of the lead screw are opposite. According to the arrangement, the lead screw rotates to drive the two clamping plates to move towards the rock placed on the supporting plate, when the limiting blocks move to abut against the rock, the rock extrudes the limiting blocks so that the limiting blocks cannot continue to move along with the clamping plates, at the moment, the limiting blocks extrude springs to contract, and then the multiple sets of limiting blocks are attached to the contour of the rock to clamp and fix the rock; therefore, the fixing requirements of rocks in different shapes are met.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature rock mechanics tests, in particular to a heating device used for high-temperature rock mechanics tests. Background Art

[0002] Rock mechanics experiments are experiments conducted directly on natural rocks. The experimental methods include normal temperature and pressure experiments, normal temperature and high pressure experiments, high temperature and high pressure experiments, and long-term creep experiments. When conducting high temperature and high pressure mechanics experiments on rocks, the rocks are heated to different temperatures and then pressure is applied to the rocks to obtain data on the performance changes of natural rocks in high temperature and high pressure environments, which is convenient for further research on rocks. Therefore, a heating device for high temperature rock mechanics experiments is particularly needed.

[0003] However, the existing heating devices used for high-temperature rock mechanics tests are troublesome to fix natural rocks of different shapes and sizes, and are difficult to adapt to the contours of different rocks, resulting in insufficient fixation.

[0004] In view of this, it is necessary to design an improved heating device for high-temperature rock mechanics tests to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a heating device for high-temperature rock mechanics tests to solve the problem that it is troublesome to fix natural rocks of different shapes and sizes and it is difficult to adapt to the contours of different rocks, thus resulting in the phenomenon of insufficient fixation.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a heating device for high-temperature rock mechanics testing, including a shell, a support plate arranged in the shell, an electric heating wire and a mechanical tester; the heating device for high-temperature rock mechanics testing also includes a screw driven by a motor, sliders arranged at both ends of the screw and a clamping plate connected to the slider; two clamping plates are relatively arranged above the support plate; a plurality of grooves are arranged on the clamping plate, and a spring is arranged in the groove, one end of the spring abuts against the clamping plate, and the other end is connected to a limiting block; the extension direction of the spring is the same as the extension direction of the screw; the slider is threadedly connected to the screw, and the thread directions at both ends of the screw are opposite.

[0007] As a further improvement of the utility model, the support plate is provided with a through slot for the screw rod to pass through, and the sliding block moves in the through slot along the screw rod.

[0008] As a further improvement of the present invention, the support plate is L-shaped, and includes a transverse plate and a vertical plate connected to the transverse plate; the through groove is arranged at the connection between the transverse plate and the vertical plate.

[0009] As a further improvement of the present invention, the positions of the limit blocks on the two clamping plates correspond to each other.

[0010] As a further improvement of the present invention, the grooves on the clamping plate are arranged in an array.

[0011] As a further improvement of the utility model, a heat insulation layer is arranged in the shell, and the heating wire is arranged below the support plate.

[0012] As a further improvement of the present invention, the support plate is arranged in an L-shape, and the heating wire is arranged below the hollow portion of the support plate.

[0013] As a further improvement of the utility model, a plurality of temperature sensors are arranged in the shell, and a temperature display screen is arranged on the cover plate of the shell.

[0014] As a further improvement of the present invention, four temperature sensors are arranged in the shell, two of the temperature sensors are arranged above the support plate, and two of the temperature sensors are arranged below the support plate.

[0015] As a further improvement of the utility model, the extending direction of the heating wire is the same as the extending direction of the lead screw.

[0016] The beneficial effects of the utility model are:

[0017] The heating device for high-temperature rock mechanics test provided by the utility model has sliders and clamps connected to the sliders at both ends of the screw rod, and springs and limit blocks connected to the springs are arranged on the inner surface of the clamps; the slider is threadedly connected to the screw rod, and the thread directions are opposite. The screw rod is rotated to drive the two clamps to move toward the rock placed on the support plate. When the limit blocks move to press the rock, the rock squeezes the limit blocks so that the limit blocks cannot continue to move with the clamps. At this time, the limit blocks squeeze the springs to contract, and then multiple groups of limit blocks fit the contour of the rock to clamp and fix the rock, thereby meeting the fixing requirements of rocks of different shapes; the fixing method is simple and convenient, and can adapt to the contours of different rocks, thereby ensuring stability during fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of the heating device of the utility model used for high-temperature rock mechanics test.

[0019] Figure 2 This is a schematic diagram of the structure after removing the clamping device.

[0020] Figure 3 This is a schematic diagram of the structure after removing the cover.

[0021] Figure 4 for Figure 3 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0024] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0025] See also Figures 1 to 4 As shown, the utility model provides a heating device 100 for high-temperature rock mechanics test, comprising a shell 1, a support plate 4 arranged in the shell 1, an electric heating wire 63 and a mechanical tester 2. The support plate 4 is used to place the rock to be tested, and the mechanical tester 2 is arranged above the support plate 4. The heating device 100 for high-temperature rock mechanics test also includes a clamping mechanism for clamping the rock to be tested, and the clamping mechanism includes a screw rod 52 driven by a motor 51, a slider 53 arranged at both ends of the screw rod 52, and a clamping plate 54 connected to the slider 53. The two clamping plates 54 are arranged above the support plate 4 in a relative manner. In particular, a plurality of grooves are arranged on the inner surface of the clamping plate 54, and a spring 55 is arranged in the groove, one end of the spring 55 is in contact with the clamping plate 54, and the other end is connected to a limit block 56. The extension direction of the spring 55 is the same as the extension direction of the screw rod 52; the slider 53 is threadedly connected to the screw rod 52, and the thread directions at both ends of the screw rod 52 are opposite. With such arrangement, when the motor 51 drives the screw rod 52 to rotate, the sliders 53 at both ends of the screw rod 52 approach or move away from each other, and at the same time drive the two clamping plates 54 approach or move away from each other; when the two sliders 53 approach each other, that is, when the two sliders 53 move relative to each other, the two clamping plates 54 are driven to move toward the rock placed on the support plate 4, and when the limit block 56 moves to press the rock, the rock squeezes the limit block 56 so that the limit block 56 cannot continue to move with the clamping plate 54, and at this time, the limit block 56 squeezes the spring 55 to contract, thereby making multiple groups of limit blocks 56 fit the contour of the rock to clamp and fix the rock, thereby achieving the fixation requirement of rocks of different shapes.

[0026] In this embodiment, the support plate 4 is arranged in an L-shape, including a horizontal plate 41 and a vertical plate 42 connected to the horizontal plate 41. A through groove 44 for the screw rod 52 to pass through is provided on the support plate 4, and the through groove 44 is provided at the connection between the horizontal plate 41 and the vertical plate 42. The screw rod 52 is connected to the support plate 4 through a bearing. A through hole for accommodating the bearing is provided on the support plate 4, that is, the screw rod 52 passes through the through holes on the support plate 4 in sequence and is connected to the support plate 4. The slider 53 is located in the through groove 44, and the width of the through groove 44 is slightly larger than the width of the slider 53. During the rotation of the screw rod 52, the slider 53 moves back and forth in the through groove 44 along the screw rod 52. When in use, the screw rod 52 can provide support for the slider 53, and at the same time, the screw rod 52 can provide a track for the relative movement of the sliders 53 at both ends.

[0027] The two clamping plates 54 are arranged opposite to each other along the extension direction of the screw rod 52. The grooves on each clamping plate 54 are arranged in an array, and correspondingly, a plurality of limit blocks 56 are arranged in an array. The positions of the limit blocks 56 on the two clamping plates 54 correspond to each other.

[0028] A heat insulating layer 61 and a plurality of temperature sensors 62 are provided in the housing 1. A heating control key 64, a temperature display screen 65 and a visual window 7 are provided on the cover plate 11 of the housing 1. The heating control key 64 is electrically connected to the heating wire 63, and the temperature sensor 62 is electrically connected to the temperature display screen 65. In this embodiment, four temperature sensors are provided in the housing 1, two temperature sensors are provided above the support plate 4, and two temperature sensors are provided below the support plate 4. The heating wire 63 is provided below the hollow portion of the support plate 4. The extension direction of the heating wire 63 is the same as the extension direction of the lead screw 52.

[0029] When in use, firstly, the heating control key 64 is used to control the heating wire 63 to be energized and heated. The heating wire 63 heats the rock. The thermal insulation layer 61 can reduce the heat exchange between the inside of the shell 1 and the outside, thereby reducing the heat loss during the heating process, and then reducing the energy consumption of heating. During the heating process, the temperature sensor 62 senses the temperature inside the shell 1 in real time, and displays the temperature in real time through the temperature display screen 65, so that the test personnel can adjust and control the test temperature.

[0030] The working principle of the heating device for high temperature rock mechanics test of the utility model is described below:

[0031] First, place the rock on the surface of the support plate 4, and then start the motor 51; at this time, the motor 51 drives the screw rod 52 to rotate, and then the screw rod 52 drives the two sets of sliders 53 to move relative to each other along the extension direction of the screw rod 52, so that the two sets of sliders 53 drive the two sets of clamping plates 54 to move relative to each other, and the clamping plates 54 drive the limit blocks 56 to move; when the limit blocks 56 move to press the rock, the rock squeezes the limit blocks 56 so that the limit blocks 56 cannot continue to move with the clamping plates 54, and at this time the limit blocks 56 squeeze the springs 55 to contract, so that the multiple sets of limit blocks 56 fit the contour of the rock to hold the rock. The rock is clamped and fixed, so as to meet the fixing requirements of rocks of different shapes; when heating is needed, the heating control key 64 is first used to control the heating wire 63 to be energized and heated, so that the heating wire 63 heats the rock, and the insulation layer 61 can reduce the heat exchange between the inside of the shell 1 and the outside, thereby reducing the heat loss during the heating process, and then reducing the energy consumption of heating. During the heating process, the temperature sensor 62 senses the temperature inside the shell 1 in real time, and displays the real-time temperature to the test personnel through the temperature display screen 65, so as to facilitate the test personnel to adjust and control the test temperature.

[0032] In summary, the heating device 100 for high-temperature rock mechanics testing provided by the utility model is provided with sliders 53 and clamps 54 connected to the sliders 53 at both ends of the screw rod 52, and springs 55 and limit blocks 56 connected to the springs 55 are provided on the inner surface of the clamps 54; the sliders 53 are threadedly connected to the screw rod 52, and the thread directions are opposite, so that the two clamps 54 can be driven by the rotation of the screw rod 52 to move toward the rock placed on the support plate 4, and when the limit blocks 56 move to press the rock, the rock squeezes the limit blocks 56 so that the limit blocks 56 cannot move with the clamps 54, and at this time the limit blocks 56 squeeze the springs 55 to contract, so that the multiple groups of limit blocks 56 fit the contour of the rock to clamp and fix the rock, thereby meeting the fixing requirements of rocks of different shapes.

[0033] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A heating device for high temperature rock mechanics testing, characterized in that: It includes a shell, a support plate arranged in the shell, an electric heating wire and a mechanical tester; the heating device for high-temperature rock mechanical tests also includes a screw driven by a motor, sliders arranged at both ends of the screw and a clamp connected to the slider; two clamps are arranged oppositely above the support plate; a plurality of grooves are arranged on the clamp, and a spring is arranged in the groove, one end of the spring abuts against the clamp, and the other end is connected to a limiting block; the extension direction of the spring is the same as the extension direction of the screw; the slider is threadedly connected to the screw, and the thread directions at both ends of the screw are opposite.

2. The heating device for high temperature rock mechanics test according to claim 1, characterized in that: The support plate is provided with a through slot for the screw rod to pass through, and the sliding block moves in the through slot along the screw rod.

3. The heating device for high temperature rock mechanics test according to claim 2, characterized in that: The support plate is arranged in an L shape, and comprises a horizontal plate and a vertical plate connected to the horizontal plate; the through groove is arranged at the connection between the horizontal plate and the vertical plate.

4. The heating device for high temperature rock mechanics test according to claim 1, characterized in that: The positions of the limiting blocks on the two clamping plates correspond to each other.

5. The heating device for high temperature rock mechanics test according to claim 4, characterized in that: The grooves on the clamping plate are arranged in an array.

6. The heating device for high temperature rock mechanics test according to claim 1, characterized in that: A heat insulation layer is arranged in the shell, and the heating wire is arranged below the support plate.

7. The heating device for high temperature rock mechanics test according to claim 6, characterized in that: The support plate is arranged in an L shape, and the heating wire is arranged below the hollow part of the support plate.

8. The heating device for high temperature rock mechanics test according to claim 1, characterized in that: A plurality of temperature sensors are arranged in the shell, and a temperature display screen is arranged on the cover plate of the shell.

9. The heating device for high temperature rock mechanics test according to claim 8, characterized in that: Four temperature sensors are arranged in the shell, two of the temperature sensors are arranged above the support plate, and two of the temperature sensors are arranged below the support plate.

10. The heating device for high temperature rock mechanics test according to claim 1, characterized in that: The extending direction of the heating wire is the same as the extending direction of the lead screw.

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