Rock mechanics true triaxial experiment device

Abstract

The utility model relates to the field of rock mechanics detection, in particular to a rock mechanics true triaxial experiment device which comprises a bottom plate, a mounting frame, a rack, a moving block, a placing table and a clamping arm, the rack is arranged at the upper end of the bottom plate, the mounting frame is fixed at the upper end of the rack, the moving block is arranged in the rack, and the placing table is arranged on the rack. A second hydraulic cylinder is installed in the moving block in an embedded mode, a first hydraulic cylinder is installed at the upper end of the mounting frame in an embedded mode, an ultrasonic monitoring system is arranged on one side of the moving block, a placing table is arranged at the upper end of the bottom plate, and a clamping arm is rotatably installed on the surface of the placing table. According to the device, stress detection in multi-angle three directions can be realized in cooperation with an ultrasonic monitoring system to realize the detection effect of various rock mechanical properties, and the problems that an existing rock mechanical experiment device lacks a multi-angle conveniently-adjusted triaxial mechanical property detection effect, and a rock sample cannot be rapidly and comprehensively detected are solved; and the overall work progress is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock mechanics detection field especially, relate to a kind of rock mechanics true triaxial experimental device. BACKGROUND

[0002] Rock mechanics true triaxial experimental device is a kind of experimental equipment for studying the deformation and rupture characteristics of rock under geological stress conditions. The device can simulate the high pressure and high temperature environment inside the earth, and study the mechanical behavior of rock samples by applying radial, axial and circumferential stress simultaneously. This experimental device is of great significance in understanding the mechanical properties of rock and geological structure, earthquakes and other fields.

[0003] Through searching, patent publication No. CN210834468U discloses a rock mechanics true triaxial experimental device, which includes a base, an experimental chamber fixedly connected to the upper surface of the base, a support block fixedly connected to the inner wall of the bottom of the experimental chamber, a plurality of electric heating tubes fixedly connected in the experimental chamber, a heat recovery mechanism corresponding to the motor heat pipe fixedly connected to the upper surface of the base, a cavity formed in the support block, and a positioning mechanism rotatably connected in the cavity. The heat recovery mechanism includes a heat preservation box fixedly connected to the upper surface of the base, a heat absorption pipe and a heat conduction pipe fixedly connected to the right side of the heat preservation box and communicating with the experimental chamber, and a suction fan and an exhaust fan fixedly connected in the heat absorption pipe and the heat conduction pipe, respectively. The utility model can quickly cool the inside of the experimental chamber, conveniently reuse heat, save energy, and conveniently position the rock to be tested.

[0004] In the prior art, although certain rock sample detection effects can be achieved in use, there are still defects: the existing rock mechanics experimental device lacks multi-angle convenient adjustment of triaxial mechanical property detection effect, resulting in slow switching speed of rock detection in different areas, which cannot quickly and comprehensively detect rock samples, affecting the overall work progress. In view of this, we propose a rock mechanics true triaxial experimental device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art and proposes a rock mechanics true triaxial experimental device.

[0006] The technical scheme of the utility model is as follows: a rock mechanics true triaxial experimental device includes a base plate, a mounting bracket, a rack, a moving block, a placement table and a clamping arm. The base plate is provided with a semicircular rack arranged in a ring array at the upper end. The rack is fixedly provided with a mounting bracket at the upper end. The rack is internally provided with a moving block. The moving block is internally embedded with a hydraulic cylinder II. The mounting bracket is embedded with a hydraulic cylinder I at the upper end. One side of the moving block is provided with an ultrasonic monitoring system. The base plate is provided with a placement table at the upper end. The placement table is rotatably provided with a clamping arm on the surface.

[0007] The device needs to realize that the lower end of the rock to be tested is provided with four limiting holes when in use, and then the limiting holes are inserted into the upper end of the limiting column, the rock is placed on the upper end of the placing table, the motor three drives the clamping arm to move centrally, the rock is fixed on the upper end of the placing table, and rotation does not occur, then the motor two drives the four direction moving blocks to move independently to the appropriate position, the hydraulic cylinder one and the hydraulic cylinder two drive the pressure plate one and the pressure plate two respectively to extrude the rock in the XYZ three directions, the surface pressure sensor one and the surface pressure sensor two can sense the pressure value under different stresses, the ultrasonic monitoring system is used to master the internal deformation of the rock in real time, and the data is fed back to the controller, and the algorithm in the controller generates a stress-strain curve on the upper end of the display screen, so that the mechanical property detection of the rock in the three axial directions is realized, and the rock can be driven to rotate by the motor one, so that the rapid switching detection processing in each direction is facilitated, and the device has high practicability.

[0008] Preferably, the lower end of the bottom plate is fixed with a support, and the lower end of the support is fixed with a base.

[0009] Preferably, the lower end of the bottom plate is fixed with a motor one, the output shaft of the motor one is fixedly connected with the rotating center at the lower end of the placing table, one side of the upper end of the bottom plate is provided with a controller, and the surface of the controller is provided with a display screen.

[0010] Preferably, the outer wall of one side of the placing table is fixed with motor two arranged in an annular array, the output shaft of the motor two is fixedly connected with the rotating center of one side of the clamping arm, one side of the outer wall of the placing table is fixed with a synchronizer, and the upper end of the placing table is fixed with a limiting column.

[0011] Preferably, the two sides of the moving block are provided with gears, the gears are meshed with the racks, the moving block is internally provided with a motor three, and the output shaft of the motor three is fixedly connected with the rotating center of one side of the gear.

[0012] Preferably, the lower end of the hydraulic cylinder is provided with a pressure plate one, and the lower end surface of the pressure plate one is provided with a pressure sensor one.

[0013] Preferably, one side of the hydraulic cylinder two is provided with a pressure plate two, and one side surface of the pressure plate two is provided with a pressure sensor two.

[0014] Compared with the prior art, the device has the advantages that:

[0015] One, the device can realize pressure effect on the rock sample in the XYZ three directions by means of the racks with four directions being semicircular and the mounting frame at the upper end, and the semicircular surface of the rack can be driven to move by the motor two, so that the three directions can also present a certain angle for force effect, and more selectivity is achieved relative to the past ninety-degree spatial included angle.

[0016] Based on the beneficial effect one, the device can drive the clamping arm movement with the centering clamping effect by the motor one, and the rapid multi-angle rock sample detection effect can be realized by cooperating with the multi-directional pressure effect, and the rock sample can be conveniently and comprehensively detected by cooperating with the ultrasonic monitoring system.

[0017] Of course, any product implementing the present application does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a three-dimensional schematic view of the present application;

[0019] Figure 2 is a bottom view of the present application;

[0020] Figure 3 is a three-dimensional schematic view of the present application; Figure 1 is an enlarged schematic view of the B structure;

[0021] Figure 4 is an enlarged schematic view of the A structure of the present application; Figure 1 is an enlarged schematic view of the A structure of the present application;

[0022] Figure 5 is an enlarged schematic view of the C structure of the present application; Figure 1 is an enlarged schematic view of the C structure of the present application.

[0023] Reference signs:

[0024] 1, bottom plate; 2, pressure disc one; 3, hydraulic cylinder one; 4, mounting frame; 5, rack; 6, moving block; 7, hydraulic cylinder two; 8, controller; 9, base; 10, support; 11, motor one; 12, pressure sensor one; 13, pressure sensor two; 14, clamping arm; 15, placement table; 16, synchronizer; 17, motor two; 18, limit column; 19, gear; 20, motor three; 21, ultrasonic monitoring system; 22, pressure disc two. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0027] Second, the utility model in combination with the schematic diagram is described in detail, in the detailed description of the utility model embodiment, for the convenience of description, the section view of device structure will be partially enlarged without general proportion, and the schematic diagram is only an example, which should not limit the scope of the utility model protection here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0028] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0029] Example 1

[0030] Please refer to Figures 1-5 The utility model discloses a rock mechanics true triaxial experimental device, including bottom plate 1, mounting frame 4, rack 5, moving block 6, placing table 15 and clamping arm 14, the half arc rack 5 of ring array distribution is equipped on the bottom plate 1 upper end, the rack 5 upper end is fixed with mounting frame 4, the rack 5 inside is equipped with moving block 6, the hydraulic cylinder two 7 is embedded and installed in moving block 6, the hydraulic cylinder one 3 is embedded and installed on the upper end of mounting frame 4, one side of moving block 6 is equipped with ultrasonic monitoring system 21, the placing table 15 is equipped on the bottom plate 1 upper end, and the clamping arm 14 is rotatably installed on the surface of placing table 15;

[0031] The device needs to realize that four limit holes are set in the lower end of the rock to be measured when being used, then is inserted into the upper end of the limiting column 18, the rock is placed on the upper end of the placing table 15, the motor three 20 rotates and drives the clamping arm 14 to be centered and moves, realizes that the rock is fixed on the upper end of the placing table 15, and rotation does not occur, then four direction moving blocks 6 are independently moved to appropriate positions by using the motor two 17, the rock is extruded in three directions of XYZ by using the hydraulic cylinder one 3 and the hydraulic cylinder two 7 to drive the pressure plate one 2 and the pressure plate two 22 respectively, the pressure sensor one 12 and the pressure sensor two 13 on the surface will sense the pressure value under different stresses, and the ultrasonic monitoring system 21 is used to master the internal deformation of the rock in real time, and the data is reacted to the controller 8, the algorithm in the controller 8 generates stress-strain curve immediately and is presented on the upper end of the display screen, so that the mechanical property detection of the rock in three axial directions is realized, and the rock can be driven to rotate by using the motor one 11, which is convenient for rapid switching detection processing in each direction, and has high practicability, here the ultrasonic monitoring system 21 is mainly designed by ultrasonic generator and ultrasonic receiver.

[0032] Example 2

[0033] Please refer to Figures 1-5As shown, the embodiment is based on the embodiment 1 further comprising: the bottom plate 1 lower end is fixed with a support 10, the support 10 lower end is fixed with a base 9, the support 10 and the base 9 can increase the stability of the device and reduce the spread of noise to some extent.

[0034] The bottom plate 1 lower end is fixed with a motor one 11, the output shaft of the motor one 11 is fixedly connected with the rotating center of the lower end of the placement table 15, one side of the upper end of the bottom plate 1 is provided with a controller 8, the surface of the controller 8 is provided with a display screen, the stress-strain curve can be drawn according to the recorded stress and strain data, the deformation characteristics of the rock in the stress process are intuitively reflected, such as the elastic stage, the plastic stage, the yield point, the failure strength and the like, and then the elastic modulus, the poisson's ratio and other parameters of the rock are analyzed, the motor one 11 can drive the placement table 15 to rotate, and the switching effect of multi-angle rock detection is realized.

[0035] The outer wall of one side of the placement table 15 is fixed with a motor two 17 arranged in a ring array, the output shaft of the motor two 17 is fixedly connected with the rotating center of one side of the clamping arm 14, the outer wall of one side of the placement table 15 is fixed with a synchronizer 16, the synchronizer 16 can ensure that the motor two 17 drives the clamping arm 14 to move at the same time, the upper end of the placement table 15 is fixed with a limiting column 18, the motor two 17 can drive the clamping arm 14 to rotate to realize the fixing effect of the rock, the limiting column 18 can position the rock, and the stable fixing effect is realized in cooperation with the clamping arm 14.

[0036] The gear 19 is arranged on both sides of the moving block 6 and engaged with the rack 5, the motor three 20 is arranged in the moving block 6, the output shaft of the motor three 20 is fixedly connected with the rotating center of one side of the gear 19, the motor three 20 can drive the gear 19 to move in cooperation with the rack 5, the movement of the moving block 6 in the rack 5 is realized, and the adjustment of different angles is realized.

[0037] The lower end of the hydraulic cylinder one 3 is provided with a pressure plate one 2, the lower end surface of the pressure plate one 2 is provided with a pressure sensor one 12, the pressure sensor one 12 can detect the stress received by the pressure plate one 2 and transmit the signal to the controller 8 in real time.

[0038] One side of the hydraulic cylinder two 7 is provided with a pressure plate two 22, one side surface of the pressure plate two 22 is provided with a pressure sensor two 13, the pressure sensor two 13 can detect the stress received by the pressure plate two 22 and transmit the signal to the controller 8 in real time.

[0039] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, can understand the specific meaning of the above-mentioned terms in the utility model according to specific circumstances.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features。Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A true triaxial experimental apparatus for rock mechanics, comprising a base plate (1), a mounting frame (4), a rack (5), a moving block (6), a placement platform (15), and a clamping arm (14), characterized in that: The upper end of the base plate (1) is provided with a semi-arc rack (5) arranged in a ring array. The upper end of the rack (5) is fixed with a mounting bracket (4). The rack (5) is provided with a moving block (6). The moving block (6) is embedded with a hydraulic cylinder (7). The upper end of the mounting bracket (4) is embedded with a hydraulic cylinder (3). An ultrasonic monitoring system (21) is provided on one side of the moving block (6). The upper end of the base plate (1) is provided with a placement platform (15). A clamping arm (14) is rotatably mounted on the surface of the placement platform (15).

2. The true triaxial experimental apparatus for rock mechanics according to claim 1, characterized in that: A bracket (10) is fixed to the lower end of the base plate (1), and a base (9) is fixed to the lower end of the bracket (10).

3. The true triaxial experimental apparatus for rock mechanics according to claim 1, characterized in that: The bottom of the base plate (1) is fixed with a motor (11), the output shaft of the motor (11) is fixedly connected to the rotation center of the bottom of the placement platform (15), and a controller (8) is provided on one side of the top of the base plate (1).

4. The true triaxial experimental apparatus for rock mechanics according to claim 1, characterized in that: The outer wall of one side of the placement platform (15) is fixed with motors (17) arranged in a ring array. The output shaft of the motors (17) is fixedly connected to the rotation center of one side of the clamping arm (14). A synchronizer (16) is fixed on the outer wall of one side of the placement platform (15). A limit post (18) is fixed at the upper end of the placement platform (15).

5. The true triaxial experimental apparatus for rock mechanics according to claim 1, characterized in that: The movable block (6) is provided with gears (19) on both sides, the gears (19) mesh with the rack (5), and the movable block (6) is provided with a motor three (20) inside, the output shaft of the motor three (20) is fixedly connected to the rotation center of one side of the gear (19).

6. The true triaxial experimental apparatus for rock mechanics according to claim 1, characterized in that: The lower end of the hydraulic cylinder (3) is provided with a pressure plate (2), and the lower surface of the pressure plate (2) is provided with a pressure sensor (12).

7. The true triaxial experimental apparatus for rock mechanics according to claim 1, characterized in that: The hydraulic cylinder 2 (7) is provided with a pressure plate 2 (22) on one side, and a pressure sensor 2 (13) is provided on one side surface of the pressure plate 2 (22).

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