Tester and testing method for testing rock wave velocities under different pressures

Abstract

The invention relates to the technical field of geotechnical engineering testing, and particularly provides a tester for testing rock wave velocities under different pressures and a testing method.The tester comprises a fixing frame, a pressure applying device, a wave velocity measuring assembly, a cleaning assembly and a linkage assembly; the pressure applying device is arranged at the top end of the interior of the fixing frame, and a supporting plate is arranged at the bottom end of the interior of the fixing frame. The wave velocity measuring assembly comprises a transmitting probe and a receiving probe, the transmitting probe is arranged on the pressure applying device, the receiving probe is arranged on the supporting plate, and the transmitting probe and the receiving probe are correspondingly arranged; the sweeping assembly is movably arranged on the supporting plate and connected with the pressure applying device through a linkage assembly. The pressure applying device is arranged to apply different pressures to the to-be-tested rock, the wave velocity of the rock under different pressures is measured through the wave velocity measuring assembly, and the influence of the pressure on the rock on the wave velocity is considered, so that the test result is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering testing, and in particular to a testing instrument and a testing method for testing rock wave velocities under different pressures. Background Art

[0002] Rock wave velocity testing is a method of evaluating the physical properties of rocks by measuring the speed at which sound waves propagate in them. When sound waves propagate in rocks, they are affected by the internal structure and properties of the rocks, thus exhibiting different propagation speeds. By measuring and analyzing the speed of sound waves, information about the internal structure and properties of the rocks can be obtained.

[0003] Patent CN220381055U discloses a two-way wave velocity testing device for reducing noise interference, including an outer shell, a wave velocity testing platform at the bottom of the inner shell, and a wave velocity testing assembly on the wave velocity testing platform; a core sample is placed on the wave velocity testing platform; the wave velocity testing assembly includes four sonic probes; a fixing device for fixing the sonic probe is provided on the inner wall of the outer shell, and the fixing device and the sonic probe are also connected by a spring; the wave velocity testing platform includes a fixed base, a lifting bracket and an arc platform connected in sequence from bottom to top; the fixed base is placed at the bottom of the inner shell, and the core sample is placed on the arc platform; an interface is provided on the fixed base, and a through hole is provided on the fixed base and the bottom of the outer shell; the transmission line of the sonic probe is connected to the inlet end of the interface, and the outlet end of the interface is connected to an external device through an external transmission line.

[0004] When measuring the wave velocity, the above-mentioned existing device uses two sets of acoustic wave probes to measure the wave velocity of the core sample. Since the burial depth of the rock is different in the ground, the pressure at the location is also different. The deeper the burial, the greater the pressure on the rock, and the corresponding wave velocity is also greater. However, the device can only detect the wave velocity value of the core sample in a pressure-free state, and cannot study the relationship between pressure and wave velocity.

[0005] Based on the above, the present invention provides a tester and a test method for testing rock wave velocities under different pressures to solve the problems existing in the prior art. Summary of the invention

[0006] The present invention aims to provide a tester and a test method for testing rock wave velocity under different pressures. The specific technical scheme is as follows:

[0007] A tester for testing rock wave velocity under different pressures, comprising a fixing frame, a pressure device, a wave velocity measuring component, a cleaning component and a linkage component;

[0008] The pressure-applying device is arranged at the inner top end of the fixing frame, and a support plate is arranged at the inner bottom end of the fixing frame;

[0009] The wave velocity measurement assembly comprises a transmitting probe and a receiving probe, wherein the transmitting probe is arranged on the pressure applying device, and the receiving probe is arranged on the supporting plate, and the transmitting probe and the receiving probe are arranged correspondingly;

[0010] The cleaning component is movably arranged on the support plate, and the cleaning component is connected with the pressure applying device through a linkage component.

[0011] Furthermore, the pressure device includes a pressure cylinder and a lower pressure plate, the fixed end of the pressure cylinder is fixedly arranged on the inner top end of the fixing frame, the telescopic end of the pressure cylinder is connected to the lower pressure plate, and the transmitting probe is arranged on the lower pressure plate.

[0012] Furthermore, the cleaning assembly includes a cleaning plate and a collection box, and the two ends of the cleaning plate are slidably mounted in the slide grooves on both sides of the interior of the fixing frame;

[0013] The collecting box is arranged on the fixing frame along the sliding direction of the cleaning plate, and is used for collecting the broken rocks swept down by the cleaning plate.

[0014] Furthermore, the collection box is slidably connected to a fixing frame, a slide rail is provided on the fixing frame, a slide block is provided on a side wall of the collection box, and the slide block cooperates with the slide rail; a roller is installed at the bottom of the collection box.

[0015] Further, the linkage assembly includes a screw, a gear, a toothed plate, a first connecting plate and a second connecting plate;

[0016] The screw is arranged in a slide groove inside the fixing frame, and the screw is threadedly connected to one end of the cleaning plate;

[0017] The gear is fixedly connected to the end of the screw;

[0018] The toothed plate is slidably mounted on the side wall of the fixing frame, and the gear is meshedly connected with the toothed plate;

[0019] The first connecting plate is connected to the lower pressing plate, and the tooth plate is connected to the first connecting plate through the second connecting plate.

[0020] Furthermore, one end of the second connecting plate is connected to the top end of the tooth plate.

[0021] Furthermore, a first communicating groove and a second communicating groove are provided on the inner side wall of the fixing frame in the vertical direction, and the first communicating groove and the second communicating groove are connected to each other;

[0022] The first connecting plate is slidably connected to the first communicating groove, and the second connecting plate is slidably disposed in the second communicating groove.

[0023] Furthermore, a limiting groove is provided on the side wall of the fixing frame, a limiting block is slidably installed in the limiting groove, and the limiting block is connected to the bottom end of the tooth plate.

[0024] Furthermore, the wave velocity measurement assembly also includes an oscilloscope, and the oscilloscope is installed on the outer side wall of the fixing frame.

[0025] A test method for testing rock wave velocity under different pressures, using the tester as described above for testing, comprises the following steps:

[0026] In the initial state, the gear is meshed with the bottom of the toothed plate, and the cleaning plate is located on one side of the supporting plate;

[0027] Start the pressure cylinder, so that the telescopic end of the pressure cylinder drives the lower pressure plate to move downward, and then drives the toothed plate to move downward, the toothed plate meshes with the gear, so that the gear rotates, and the rotation of the gear drives the screw to rotate, so that the cleaning plate moves on the upper end surface of the support plate;

[0028] The sweeping plate moves to the other side of the support plate, at which point the pressure cylinder stops, placing the rock on the upper end face of the support plate, just below the lower pressure plate;

[0029] Start the pressure cylinder, and the telescopic end of the pressure cylinder drives the lower pressure plate to move downward to apply pressure to the rock, and start the transmitting probe and the receiving probe to perform wave velocity testing; by continuously increasing the pressure, the wave velocity values ​​of the rock under different pressure states are obtained and displayed on the oscilloscope;

[0030] When the pressure continues to increase and the rock is cracked, the pressure cylinder stops applying pressure, and the telescopic end of the pressure cylinder contracts to drive the lower pressure plate to move upward, and the tooth plate is driven to move upward through the first connecting plate and the second connecting plate. The tooth plate is engaged with the gear, driving the gear to rotate, and the rotation of the gear drives the screw to rotate, thereby causing the cleaning plate to move on the upper end surface of the support plate, and then cleaning the cracked rock on the upper end surface of the support plate into the collection box.

[0031] The application of the technical solution of the present invention has the following beneficial effects:

[0032] (1) The present invention provides a tester for testing the wave velocity of rocks under different pressures, including a fixed frame, a pressure device, a wave velocity measurement component, a cleaning component and a linkage component; the pressure device is arranged at the internal top end of the fixed frame, and a support plate is arranged at the internal bottom end of the fixed frame; the wave velocity measurement component includes a transmitting probe and a receiving probe, the transmitting probe is arranged on the pressure device, and the receiving probe is arranged on the support plate, and the transmitting probe and the receiving probe are arranged correspondingly; the cleaning component is movably arranged on the support plate, and the cleaning component is connected to the pressure device through a linkage component. The present invention applies different pressures to the rock to be tested by setting a pressure device, and measures the wave velocity of the rock under different pressures by the wave velocity measurement component, taking into account the influence of the pressure on the rock on the wave velocity, so that the test result is more accurate.

[0033] (2) In the present invention, a cleaning component is also provided, through which the broken rocks are automatically cleaned, so as to facilitate the next detection.

[0034] (3) In the present invention, the cleaning component and the pressure device are connected through a linkage component, so that the cleaning component can move with the movement of the lower pressure plate. When the rock speed detection is completed and the pressure device returns to its initial state, the broken rock is cleaned synchronously to improve the detection efficiency.

[0035] (4) In the present invention, the cleaning assembly includes a cleaning plate and a collecting box. The cleaning plate and the collecting box are used in combination to achieve cleaning and collection of broken rocks.

[0036] (5) In the present invention, the collection box is slidably arranged on a fixed frame, a slide rail is arranged on the fixed frame, a slider is arranged on the side wall of the collection box, and the slider cooperates with the slide rail; a roller is installed at the bottom of the collection box to facilitate the cleaning of the broken rocks in the collection box.

[0037] (6) In the present invention, a limiting groove is provided on the side wall of the fixing frame, a limiting block is slidably installed in the limiting groove, and the limiting block is connected to the bottom end of the tooth plate. By providing the limiting groove and the limiting block, the movement of the tooth plate is made more stable.

[0038] (7) The present invention also provides a test method for testing rock wave velocities under different pressures, thereby achieving the measurement of rock wave velocities under different pressures.

[0039] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0041] Figure 1 Schematic diagram of the overall structure of a tester for testing rock wave velocities under different pressures in an embodiment of the present invention;

[0042] Figure 2 It is a partial structural schematic diagram of a testing instrument for testing rock wave velocities under different pressures in an embodiment of the present invention;

[0043] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a tester for testing rock wave velocities under different pressures in an embodiment of the present invention;

[0044] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0045] Figure 5 yes Figure 3 The enlarged schematic diagram of point B in the middle;

[0046] Figure 6 is a schematic diagram of the state of the pressure device in the embodiment of the present invention applying pressure to the rock;

[0047] Figure 7 yes Figure 6 The enlarged schematic diagram of the center C;

[0048] Among them, 1. fixed frame, 1.1. first connecting groove, 1.2. second connecting groove, 1.3. limit groove, 2. pressure device, 2.1. pressure cylinder, 2.2. lower pressure plate, 3. wave velocity measurement component, 3.1. transmitting probe, 3.2. receiving probe, 3.3. oscilloscope, 4. cleaning component, 4.1. cleaning plate, 4.2. collecting box, 5. linkage component, 5.1. screw, 5.2. gear, 5.3. gear plate, 5.4. first connecting plate, 5.5. second connecting plate, 6. support plate, 7. limit block, 8. laser rangefinder. DETAILED DESCRIPTION

[0049] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0052] Example

[0053] See also Figure 1-Figure 3 The present invention provides a tester for testing rock wave velocity under different pressures, including a fixed frame 1, a pressure device 2, a wave velocity measuring component 3, a cleaning component 4 and a linkage component 5; the pressure device 2 is arranged at the internal top of the fixed frame 1, and the pressure device 2 includes a pressure cylinder 2.1 and a lower pressure plate 2.2, the fixed end of the pressure cylinder 2.1 is fixedly arranged at the internal top of the fixed frame 1, and the telescopic end of the pressure cylinder 2.1 is connected to the lower pressure plate 2.2; the internal bottom end of the fixed frame 1 is provided with a support plate 6.

[0054] The wave velocity measurement assembly 3 includes a transmitting probe 3.1 and a receiving probe 3.2. The transmitting probe 3.1 is embedded in the middle position of the lower end surface of the lower pressure plate 2.2, and the receiving probe 3.2 is embedded in the upper end surface of the support plate 6. The transmitting probe 3.1 and the receiving probe 3.2 are correspondingly arranged.

[0055] In this embodiment, see Figure 2 A laser rangefinder 8 is fixedly installed at the edge of the lower end surface of the lower pressure plate 2.2. The laser rangefinder 8 can measure the distance between the transmitting probe 3.1 and the receiving probe 3.2 in real time when the lower pressure plate 2.2 presses the rock downward.

[0056] See also Figure 1-Figure 3 In this embodiment, the cleaning assembly 4 is movably arranged on the support plate 6, and the cleaning assembly 4 includes a cleaning plate 4.1 and a collection box 4.2. The two ends of the cleaning plate 4.1 are slidably installed in the slide grooves on both sides of the interior of the fixing frame 1; in this embodiment, see Figure 2A slide bar is fixedly installed in one of the slide grooves (on the left side inside the fixing frame 1), the first end of the cleaning plate 4.1 is slidably connected to the slide bar, and the second end of the cleaning plate 4.1 is connected to the pressure device 2 through a linkage assembly 5. The cleaning plate 4.1 moves on the upper end surface of the support plate 6, thereby cleaning the broken rocks on the upper end surface of the support plate 6.

[0057] See also Figure 1-Figure 3 The collecting box 4.2 is arranged on the fixing frame 1 along the sliding direction of the cleaning plate 4.1, and is used to collect the broken rocks swept down by the cleaning plate 4.1. Preferably, in this embodiment, two collecting boxes 4.2 are arranged, which are respectively located at the front and rear sides of the fixing frame 1.

[0058] In this embodiment, see Figure 3 The collecting box 4.2 is connected to the fixing frame 1 by limited sliding. The fixing frame 1 is provided with a slide rail. The side wall of the collecting box 4.2 is provided with a slider, and the slider cooperates with the slide rail. The bottom of the collecting box 4.2 is provided with a roller. The rocks fall into the collecting box 4.2 through the cleaning and pushing of the cleaning plate 4.1. When the collecting box 4.2 is full, it can slide out through the slide rail, so as to facilitate the transfer of broken rocks.

[0059] In this embodiment, see Figure 1-Figure 5 The second end of the cleaning plate 4.1 is connected to the pressure device 2 through a linkage assembly 5, and the linkage assembly 5 includes a screw 5.1, a gear 5.2, a tooth plate 5.3, a first connecting plate 5.4 and a second connecting plate 5.5; the screw 5.1 is arranged in the slide groove on the right side of the fixed frame 1, and the screw 5.1 is threadedly connected to the second end of the cleaning plate 4.1; the gear 5.2 is fixedly connected to the end of the screw 5.1; the tooth plate 5.3 is slidably installed on the side wall of the fixed frame 1, and the gear 5.2 is meshedly connected with the tooth plate 5.3.

[0060] It should be noted that the teeth of the tooth plate 5.3 are locally set. When the cleaning plate 4.1 moves from one side of the support plate 6 to the other side, the teeth on the tooth plate 5.3 are located below the gear 5.2. Therefore, when the lower pressure plate 2.2 continues to move downward, the tooth plate 5.3 is not engaged with the gear 5.2. At this time, the gear 5.2 will not rotate and the cleaning plate 4.1 remains stationary.

[0061] The first connecting plate 5.4 is connected to the lower pressing plate 2.2, and the tooth plate 5.3 is connected to the first connecting plate 5.4 via the second connecting plate 5.5.

[0062] For details, see Figure 5-Figure 7The inner side wall of the fixing frame 1 is provided with a first connecting groove 1.1 and a second connecting groove 1.2 in the vertical direction, and the first connecting groove 1.1 and the second connecting groove 1.2 are connected to each other; the first connecting plate 5.4 is slidably connected to the first connecting groove 1.1, and the second connecting plate 5.5 is slidably arranged in the second connecting groove 1.2. One end of the second connecting plate 5.5 is fixedly connected to the first connecting plate 5.4, and the other end of the second connecting plate 5.5 is fixedly connected to the top end of the tooth plate 5.3.

[0063] In order to make the movement of the tooth plate 5.3 more stable, a limiting groove 1.3 is provided on the side wall of the fixing frame 1, and a limiting block 7 is slidably installed in the limiting groove 1.3, and the limiting block 7 is connected to the bottom end of the tooth plate 5.3.

[0064] In this embodiment, the wave velocity measurement assembly 3 further includes an oscilloscope 3.3, which is mounted on the outer side wall of the fixing frame 1, and the transmitting probe 3.1 and the receiving probe 3.2 are both electrically connected to the oscilloscope 3.3. The transmitting probe 3.1, the receiving probe 3.2 and the oscilloscope 3.3 are all prior art.

[0065] The present invention also provides a test method for testing rock wave velocity under different pressures, using the tester as described above to perform the test, comprising the following steps:

[0066] In the initial state, see Figure 3 and Figure 4 , the gear 5.2 is meshed with the bottom of the toothed plate 5.3, and the cleaning plate 4.1 is located on one side of the supporting plate 6;

[0067] When in use, the pressure cylinder 2.1 is started, so that the telescopic end of the pressure cylinder 2.1 drives the lower pressure plate 2.2 to move downward, and then drives the toothed plate 5.3 to move downward, and the toothed plate 5.3 meshes with the gear 5.2, so that the gear 5.2 rotates, and the rotation of the gear 5.2 drives the screw 5.1 to rotate, so that the cleaning plate 4.1 moves on the upper end surface of the support plate 6;

[0068] like Figure 6 As shown, the cleaning plate 4.1 moves to the other side of the support plate 6, at which time the pressure cylinder 2.1 stops, placing the rock on the upper end surface of the support plate 6, just below the lower pressure plate 2.2;

[0069] Start the pressure cylinder 2.1, and the telescopic end of the pressure cylinder 2.1 drives the lower pressure plate 2.2 to move downward. Figure 7 At this time, since the teeth of the toothed plate 5.3 are partially arranged and the teeth on the toothed plate 5.3 are located below the gear 5.2, when the lower pressure plate 2.2 drives the toothed plate 5.3 to move downward through the first connecting plate 5.4 and the second connecting plate 5.5, the toothed plate 5.3 is not meshed with the gear 5.2, and the gear 5.2 does not rotate at this time, that is, the cleaning plate 4.1 is in a stationary state;

[0070] The lower pressure plate 2.2 moves downward to exert pressure on the rock, and the transmitting probe 3.1 and the receiving probe 3.2 are started. The time for the longitudinal wave to pass through the rock is detected in real time by the transmitting probe 3.1 and the receiving probe 3.2. The laser rangefinder 8 can measure the distance between the transmitting probe 3.1 and the receiving probe 3.2 in real time during the process of the lower pressure plate 2.2 pressing the rock downward, and then calculate the value of the wave velocity; by continuously increasing the pressure, the wave velocity values ​​of the rock under different pressure states are obtained and displayed by the oscilloscope 3.3;

[0071] When the pressure continues to increase and the rock is broken, the pressure cylinder 2.1 stops applying pressure, and the telescopic end of the pressure cylinder 2.1 contracts to drive the lower pressure plate 2.2 to move upward, and the tooth plate 5.3 is driven to move upward through the first connecting plate 5.4 and the second connecting plate 5.5. The tooth plate 5.3 is meshed with the gear 5.2, driving the gear 5.2 to rotate. The rotation of the gear 5.2 drives the screw 5.1 to rotate, thereby causing the cleaning plate 4.1 to move on the upper end surface of the support plate 6, and then the broken rocks on the upper end surface of the support plate 6 are cleaned into the collection box 4.2.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tester for testing rock wave velocity under different pressures, characterized in that: It comprises a fixing frame (1), a pressure applying device (2), a wave velocity measuring component (3), a cleaning component (4) and a linkage component (5); The pressure-applying device (2) is arranged at the internal top end of the fixing frame (1), and a support plate (6) is arranged at the internal bottom end of the fixing frame (1); The wave velocity measurement assembly (3) comprises a transmitting probe (3.1) and a receiving probe (3.2), wherein the transmitting probe (3.1) is arranged on the pressure applying device (2), and the receiving probe (3.2) is arranged on the supporting plate (6), and the transmitting probe (3.1) and the receiving probe (3.2) are arranged correspondingly; The cleaning component (4) is movably arranged on a support plate (6), and the cleaning component (4) is connected to the pressure device (2) via a linkage component (5).

2. A tester for testing rock wave velocity under different pressures according to claim 1, characterized in that: The pressure-applying device (2) comprises a pressure cylinder (2.1) and a lower pressure plate (2.2); the fixed end of the pressure cylinder (2.1) is fixedly arranged at the inner top end of the fixing frame (1); the telescopic end of the pressure cylinder (2.1) is connected to the lower pressure plate (2.2); and the transmitting probe (3.1) is arranged on the lower pressure plate (2.2).

3. A tester for testing rock wave velocity under different pressures according to claim 2, characterized in that: The cleaning assembly (4) comprises a cleaning plate (4.1) and a collection box (4.2), and the two ends of the cleaning plate (4.1) are slidably mounted in slide grooves on both sides of the interior of the fixing frame (1); The collecting box (4.2) is arranged on the fixing frame (1) along the sliding direction of the cleaning plate (4.1) and is used for collecting the broken rocks swept down by the cleaning plate (4.1).

4. A tester for testing rock wave velocity under different pressures according to claim 3, characterized in that: The collection box (4.2) is slidably connected to the fixing frame (1), a slide rail is provided on the fixing frame (1), a slide block is provided on the side wall of the collection box (4.2), and the slide block cooperates with the slide rail; a roller is installed at the bottom of the collection box (4.2).

5. The tester for testing rock wave velocity under different pressures according to claim 3, characterized in that: The linkage assembly (5) comprises a screw rod (5.1), a gear (5.2), a toothed plate (5.3), a first connecting plate (5.4) and a second connecting plate (5.5); The screw rod (5.1) is arranged in a slide groove inside the fixing frame (1), and the screw rod (5.1) is threadedly connected to one end of the cleaning plate (4.1); The gear (5.2) is fixedly connected to the end of the screw rod (5.1); The toothed plate (5.3) is slidably mounted on the side wall of the fixing frame (1) up and down, and the gear (5.2) is meshingly connected with the toothed plate (5.3); The first connecting plate (5.4) is connected to the lower pressing plate (2.2), and the tooth plate (5.3) is connected to the first connecting plate (5.4) via the second connecting plate (5.5).

6. A tester for testing rock wave velocity under different pressures according to claim 5, characterized in that: One end of the second connecting plate (5.5) is connected to the top end of the tooth plate (5.3).

7. A tester for testing rock wave velocity under different pressures according to claim 5, characterized in that: A first connecting groove (1.1) and a second connecting groove (1.2) are arranged on the inner side wall of the fixing frame (1) in a vertical direction, and the first connecting groove (1.1) and the second connecting groove (1.2) are connected to each other; The first connecting plate (5.4) is slidably connected to the first communicating groove (1.1), and the second connecting plate (5.5) is slidably disposed in the second communicating groove (1.2).

8. The tester for testing rock wave velocity under different pressures according to claim 5, characterized in that: A limiting groove (1.3) is provided on the side wall of the fixing frame (1), a limiting block (7) is slidably installed in the limiting groove (1.3), and the limiting block (7) is connected to the bottom end of the tooth plate (5.3).

9. A tester for testing rock wave velocity under different pressures according to any one of claims 1 to 8, characterized in that: The wave velocity measurement component (3) further comprises an oscilloscope (3.3), wherein the oscilloscope (3.3) is mounted on an outer side wall of the fixing frame (1).

10. A method for testing rock wave velocity under different pressures, using the tester according to any one of claims 1 to 9 for testing, characterized in that: The following steps are involved: In the initial state, the gear (5.2) is meshed with the bottom of the toothed plate (5.3), and the cleaning plate (4.1) is located on one side of the supporting plate (6); The pressure cylinder (2.1) is started, so that the telescopic end of the pressure cylinder (2.1) drives the lower pressure plate (2.2) to move downward, thereby driving the toothed plate (5.3) to move downward, the toothed plate (5.3) meshes with the gear (5.2), causing the gear (5.2) to rotate, and the rotation of the gear (5.2) drives the screw rod (5.1) to rotate, thereby causing the cleaning plate (4.1) to move on the upper end surface of the support plate (6); The cleaning plate (4.1) moves to the other side of the support plate (6), at which time the pressure cylinder (2.1) stops, placing the rock on the upper end surface of the support plate (6), just below the lower pressure plate (2.2); The pressure cylinder (2.1) is started, and the telescopic end of the pressure cylinder (2.1) drives the lower pressure plate (2.2) to move downward to apply pressure to the rock, and the transmitting probe (3.1) and the receiving probe (3.2) are started to perform wave velocity testing; by continuously increasing the pressure, the wave velocity values ​​of the rock under different pressure states are obtained and displayed through an oscilloscope (3.3); When the pressure increases continuously and the rock is broken, the pressure cylinder (2.1) stops applying pressure, and the telescopic end of the pressure cylinder (2.1) is contracted to drive the lower pressure plate (2.2) to move upward, and the tooth plate (5.3) is driven to move upward through the first connecting plate (5.4) and the second connecting plate (5.5), and the tooth plate (5.3) is meshed with the gear (5.2), driving the gear (5.2) to rotate, and the rotation of the gear (5.2) drives the screw (5.1) to rotate, thereby causing the cleaning plate (4.1) to move on the upper end surface of the support plate (6), and then cleaning the broken rock on the upper end surface of the support plate (6) to the collection box (4.2).

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