Bentonite compression strength detection device

Abstract

This invention discloses a bentonite compressive strength testing device, belonging to the technical field of compressive strength testing equipment. The invention includes a testing platform with a pressure testing mechanism on top. The pressure testing mechanism includes a support column movably connected inside the testing platform, a disc mounted on top of the support column, and two sets of testing slots inside the disc. By setting up a material discharge mechanism, the invention utilizes a protrusion that rotates with the disc and pushes a pulley, causing a moving frame to alternately move a first partition and a second partition, achieving automatic single-particle feeding and segmented material supply of bentonite balls, thereby effectively improving continuous testing efficiency. By setting up a scraping mechanism, after the pressure head completes pressing, it moves downward to the distribution pipe, causing the moving wheel to be pressurized and driving the moving ring downward. The rotation of the disc drives a scraper to scrape and clean the debris adhering to the bottom of the pressure head, preventing residual hard particles from affecting the contact state between the pressure head and the balls, thus significantly improving the accuracy of the compressive strength testing data.

Description

Technical Field

[0001] This invention belongs to the technical field of compressive strength testing equipment, and in particular relates to a bentonite compressive strength testing device. Background Technology

[0002] The compressive strength test of bentonite balls is a key test for evaluating their mechanical properties, mainly used in engineering fields such as seepage prevention liners and drilling mud. During the test, dry bentonite ball samples with a diameter of 10-20 mm are prepared according to standards and placed between the pressure plates of the testing machine. An axial load is applied at a constant rate (usually 1-5 mm / min) until the ball breaks, and the maximum failure load is recorded. The compressive strength value (unit: MPa) is obtained by calculating the ratio of the load to the initial cross-sectional area. This indicator directly reflects the bentonite ball's resistance to breakage during transportation and construction, and is an important basis for ensuring the integrity of the seepage prevention layer and the effectiveness of drilling wall protection. It is widely used in material quality control in environmental protection and geological engineering.

[0003] A Chinese patent application (or patent) with publication number CN210775017U discloses a pellet strength testing device, including a base, a column, and a collection chamber. The column is bolted to one end of the top of the base. A smart camera is connected to the top of the column via a damping shaft. A motor chamber is bolted to the column, and a servo motor is mounted inside the motor chamber via a mounting component. A lead screw is bolted to the output shaft of the servo motor, and a lead screw is sleeved on the lead screw.

[0004] However, the above-mentioned device still has the following problems during implementation: During pellet testing, the equipment can only perform loading tests on a single batch of pellets at a time, and loading and unloading are entirely manual operations. After testing, operators must manually clean up debris and place new samples one by one, a tedious process with long intervals. This "test, stop, and place" work mode is not only labor-intensive but also results in excessively long idle waiting times for the testing equipment, severely restricting overall quality inspection efficiency.

[0005] A Chinese patent application (or patent) with publication number CN114720268B discloses a rapid pellet compressive strength testing machine, which includes six major systems: transmission, pellet pressing, pellet feeding, slag discharge, data acquisition and analysis, and frame lubrication. The system has only one power source, and the main parts are a motor, reducer, coupling, crankshaft, connecting rod, and pressure head. The crankshaft drives four connecting rods, and the four connecting rods drive four pressure heads to alternately press the pellets. The main shaft rotates once to test four pellets.

[0006] However, the above-mentioned device still has the following problems during implementation: During the compressive strength testing of pellets, brittle fracture occurs first on the surface of the pellets when the indenter descends to apply pressure. Because stress concentrates in the center of the sample, fine powder and debris generated under high pressure easily embeds or adheres to the bottom surface of the indenter. If these hard residues are not cleaned in time and subsequent batch tests are carried out directly, they will alter the contact state between the indenter and the pellets, causing a shift in the stress point and resulting in data deviation.

[0007] To address this issue, we provide a bentonite compressive strength testing device. Summary of the Invention

[0008] The purpose of this invention is to provide a bentonite compressive strength testing device. Through the structural cooperation of the discharge mechanism and the scraping mechanism, it solves the problem in the prior art of pellet testing equipment that requires the pressure head to be lowered to apply pressure to the pellets. In this case, the surface of the pellets will break first, and the middle part of the pellets will be under greater pressure. Some fragments will adhere to the bottom of the pressure head. If subsequent pressing and testing are carried out directly, the fragments will affect the accuracy of the test data.

[0009] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0010] This invention relates to a device for testing the compressive strength of bentonite, comprising a testing platform, a pressure testing mechanism on the top of the testing platform, the pressure testing mechanism including a support column movably connected inside the testing platform, a disc mounted on the top of the support column, two sets of testing slots opened inside the disc, a hydraulic rod on the top of the disc, a pressure head at the output end of the hydraulic rod, a drive assembly inside the testing platform, and a pressure sensor mounted on the top of the pressure head. The pressure testing mechanism performs strength testing on bentonite balls. A discharge mechanism is provided on the top of the disc, the discharge mechanism including components mounted on the disc... The top storage shell is connected to a discharge pipe on one side of the storage shell. A first partition and a second partition are installed on both sides of the discharge pipe. A movable frame is sleeved on the surface of the discharge pipe. A pulley is installed on one side of the movable frame. A protrusion is installed on one side of the pulley. The bentonite balls are automatically discharged through the discharge mechanism. A scraping mechanism is provided on one side of the disc. The scraping mechanism includes a fixed disc movably connected to the surface of the support column, a discharge pipe connected to the bottom of the fixed disc, two distribution pipes connected to the top of the disc, and a scraper installed on the top of the distribution pipe. The scraping mechanism removes the debris adhering to the bottom of the pressure head.

[0011] The present invention is further configured such that the scraping mechanism includes an adjustment groove opened inside the fixed plate, a movable ring slidably connected inside the adjustment groove, a first spring installed at the bottom of the movable ring, a telescopic cylinder installed inside the movable ring, and a movable wheel installed inside the telescopic cylinder.

[0012] The present invention is further configured such that the distance between the top of the moving wheel and the scraper is the same as the distance between the moving ring and the bottom of the adjusting groove, one end of the first spring is fixedly connected to the inner wall of the adjusting groove, and the bottom of the fixed plate is fixedly connected to the detection table.

[0013] The present invention is further configured such that one side of the first partition is fixedly connected to the movable frame, and one side of the second partition is fixedly connected to the movable frame.

[0014] The present invention is further configured such that a support ring is fixedly connected to the top of the disk, and one side of the protrusion is fixedly connected to the support ring.

[0015] The invention is further configured such that a sliding rod is slidably connected inside the movable frame, one end of the sliding rod is fixedly connected to the discharge pipe, and a second spring is sleeved on the surface of the sliding rod.

[0016] The present invention is further configured such that the driving component includes a driving motor installed inside the testing table, a first gear installed at the output end of the driving motor, and a second gear installed on the surface of the support column, wherein one side of the first gear meshes with the second gear.

[0017] The present invention is further configured such that a collection box is provided through one side of the detection platform, and a handle is fixedly connected to one side of the collection box.

[0018] The present invention is further configured such that a bracket is fixedly connected to the surface of the hydraulic rod, and the bottom of the bracket is fixedly connected to the testing platform.

[0019] The present invention is further configured such that the discharge pipe, the distribution pipe and the detection groove maintain the same rotation axis, and the pressure head is vertically aligned with the detection groove and the distribution pipe.

[0020] The present invention has the following beneficial effects: By setting up a material discharge mechanism, the present invention utilizes the convex blocks that rotate with the disc and push the pulleys, causing the moving frame to drive the first and second partitions to move alternately, realizing automatic single-particle feeding and segmented feeding of bentonite balls. This eliminates the need for manual placement of each ball, significantly reducing labor intensity and equipment idle waiting time, thereby effectively improving continuous testing efficiency. At the same time, by setting up a scraping mechanism, after the pressing head completes the pressing, it moves downward to the distribution pipe, causing the moving wheel to be pressed and driving the moving ring to move downward. The rotating disc drives the scraper to scrape and clean the debris adhering to the bottom of the pressing head, avoiding residual hard particles from affecting the contact state between the pressing head and the balls, ensuring accurate and consistent stress points, thereby significantly improving the accuracy and reliability of compressive strength test data.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a three-dimensional diagram of a bentonite compressive strength testing device.

[0024] Figure 2 This is a schematic diagram of the structure of the top of a disc in a bentonite compressive strength testing device.

[0025] Figure 3 This is a cross-sectional view of the testing platform in a bentonite compressive strength testing device.

[0026] Figure 4 This is a cross-sectional view of the material storage shell and discharge pipe in a bentonite compressive strength testing device.

[0027] Figure 5 This is a cross-sectional view of a movable frame in a bentonite compressive strength testing device.

[0028] Figure 6 This is a cross-sectional view of a disc in a bentonite compressive strength testing device.

[0029] Figure 7 This is a cross-sectional view of the material distribution pipe in a bentonite compressive strength testing device.

[0030] Figure 8 This is a schematic diagram of the pressure head being pressed down for cleaning in a bentonite compressive strength testing device.

[0031] Figure 9 This is a schematic diagram of the feeding of bentonite balls in a bentonite compressive strength testing device.

[0032] In the attached diagram: 1. Testing platform; 2. Pressure testing mechanism; 21. Support column; 22. Disc; 23. Testing groove; 24. Hydraulic rod; 25. Pressure head; 26. Drive assembly; 27. Pressure sensor; 3. Discharge mechanism; 31. Storage shell; 32. Discharge pipe; 33. First partition; 34. Second partition; 35. Moving frame; 36. Pulley; 37. Protrusion; 4. Scraping mechanism; 41. Fixed disc; 42. Discharge pipe; 43. Distribution pipe; 44. Scraper; 45. Adjustment groove; 46. Moving ring; 47. First spring; 48. Telescopic cylinder; 49. Moving wheel; 5. Support ring; 6. Slide rod; 7. Second spring; 261. Drive motor; 262. First gear; 263. Second gear; 8. Collection box; 9. Support frame. Detailed Implementation

[0033] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Please refer to Example 1 Figures 1-9 This invention relates to a bentonite compressive strength testing device, comprising a testing platform 1, a pressure testing mechanism 2 on the top of the testing platform 1, the pressure testing mechanism 2 including a support column 21 movably connected inside the testing platform 1, a disc 22 mounted on the top of the support column 21, two sets of testing slots 23 opened inside the disc 22, a hydraulic rod 24 mounted on the top of the disc 22, a pressure head 25 mounted on the output end of the hydraulic rod 24, a drive assembly 26 mounted inside the testing platform 1, and a pressure sensor 27 mounted on the top of the pressure head 25. The pressure testing mechanism 2 is used to test the strength of bentonite balls. A discharge mechanism 3 is provided on the top of the disc 22, the discharge mechanism 3 including a storage shell 3 mounted on the top of the disc 22. 1. A discharge pipe 32 connected to one side of the storage shell 31, a first partition 33 and a second partition 34 arranged on both sides of the discharge pipe 32, a movable frame 35 sleeved on the surface of the discharge pipe 32, a pulley 36 installed on one side of the movable frame 35, and a protrusion 37 arranged on one side of the pulley 36, automatically discharges bentonite balls through the discharge mechanism 3; a scraping mechanism 4 is provided on one side of the disc 22. The scraping mechanism 4 includes a fixed disc 41 movably connected to the surface of the support column 21, a discharge pipe 42 connected to the bottom of the fixed disc 41, two sets of distribution pipes 43 connected to the top of the disc 22, and a scraper 44 installed on the top of the distribution pipes 43. The scraping mechanism 4 scrapes away the debris adhering to the bottom of the pressure head 25.

[0035] Specifically: Two sets of detection slots 23 are opened inside the disc 22 to accommodate the bentonite balls to be tested. The hydraulic rod 24 provides a controllable downward driving force. The pressure head 25 installed at the output end of the hydraulic rod 24 directly contacts the surface of the bentonite ball and applies gradually increasing pressure. The pressure sensor 27 installed on the top of the pressure head 25 collects the reaction force of the pressure head 25 in real time and converts it into an electrical signal to accurately obtain the maximum load value at the time of rupture. Through this pressure detection mechanism 2, the automatic continuous strength detection of the bentonite balls can be realized. The discharge pipe 32 serves as a channel for conveying the bentonite balls downward and controls their orderly discharge. The first partition 33 and the second partition 34, which are set through both sides of the discharge pipe 32, work together to control the timing and quantity of bentonite balls being released. The moving frame 35 is used to drive the partitions to produce translational movement. The pulley 36, as a force trigger, converts the circular motion into linear motion. A device is set on one side of the pulley 36. The protrusion 37 is fixed on the support ring 5, rotates synchronously with the disc 22, and pushes the pulley 36 at a specific angle. The automatic single-particle feeding of bentonite balls is realized through the discharge mechanism 3, thereby avoiding the inefficiency caused by manual placement. The discharge pipe 42 connected to the bottom of the fixed disc 41 is used to guide the crushed bentonite ball debris after the test is completed. The scraper 44 installed on the top of the distribution pipe 43 rotates with the disc 22 after the pressure head 25 is pressed down to the specified height, and scrapes off the fine powder and debris attached to the bottom surface of the pressure head 25. The adjustment groove 45 is used to accommodate the moving ring 46 and limit its up and down sliding stroke. When the pressure head 25 is pressed down, the moving ring 46 drives the telescopic cylinder 48 to move down synchronously. The first spring 47 installed at the bottom of the moving ring 46 provides a reset elastic force after the pressure head 25 is withdrawn, so that the moving ring 46 rises back to the initial position. The telescopic cylinder 48 installed inside the moving ring 46 is used to connect the moving wheel 49 and transmit the downward pressure.

[0036] Please refer to Example 2 Figures 1-9 Based on Embodiment 1, the scraping mechanism 4 further includes an adjustment groove 45 opened inside the fixed disk 41, a movable ring 46 slidably connected inside the adjustment groove 45, a first spring 47 installed at the bottom of the movable ring 46, a telescopic cylinder 48 installed inside the movable ring 46, and a movable wheel 49 installed inside the telescopic cylinder 48. The distance between the top of the movable wheel 49 and the scraper 44 is the same as the distance between the movable ring 46 and the bottom of the adjustment groove 45. One end of the first spring 47 is fixedly connected to the inner wall of the adjustment groove 45. The bottom of the fixed disk 41 is fixedly connected to the detection table 1. One side of the first partition 33 is fixedly connected to the movable frame 35. One side of the second partition 34 is fixedly connected to the movable frame 35. A support ring 5 is fixedly connected to the top of the disc 22, and one side of the protrusion 37 is fixedly connected to the support ring 5.

[0037] Specifically: The movable wheel 49 installed inside the telescopic cylinder 48 directly contacts the bottom surface of the pressure head 25 and rolls as the pressure head 25 descends, thereby reducing frictional damage. The structural relationship that the distance between the top of the movable wheel 49 and the scraper 44 is the same as the distance between the movable ring 46 and the bottom of the adjusting groove 45 ensures that when the movable ring 46 touches the bottom, the scraper 44 is precisely aligned with the edge of the bottom surface of the pressure head 25 for effective scraping. One side of the first partition 33 is fixedly connected to the movable frame 35, and one side of the second partition 34 is also fixedly connected to the movable frame 35. In this way, the translation of the movable frame 35 can simultaneously drive... The two partitions move in opposite directions to block and release, thus achieving synchronous coordination between single pellet feeding and blocking subsequent pellets. The support ring 5, which is fixedly connected to the top of the disc 22, rotates synchronously with the disc 22. One side of the protrusion 37 is fixedly connected to the support ring 5, so that the protrusion 37 and the detection groove 23 maintain a fixed angular correspondence, ensuring that whenever the detection groove 23 rotates to the bottom of the discharge pipe 32, the protrusion 37 pushes the pulley 36 to complete the feeding action. The sliding rod 6, which is slidably connected inside the moving frame 35, provides guidance for the translation of the moving frame 35 and limits its movement trajectory.

[0038] Please refer to Example 3 Figures 1-9 Based on Embodiments 1 and 2, a sliding rod 6 is slidably connected inside the movable frame 35. One end of the sliding rod 6 is fixedly connected to the discharge pipe 32. A second spring 7 is sleeved on the surface of the sliding rod 6. The drive assembly 26 includes a drive motor 261 installed inside the detection table 1, a first gear 262 installed at the output end of the drive motor 261, and a second gear 263 installed on the surface of the support column 21. One side of the first gear 262 meshes with the second gear 263. A collection box 8 is provided through one side of the detection table 1. A handle is fixedly connected to one side of the collection box 8. A bracket 9 is fixedly connected to the surface of the hydraulic rod 24. The bottom of the bracket 9 is fixedly connected to the detection table 1. The discharge pipe 32, the distribution pipe 43, and the detection groove 23 maintain the same rotation axis. The pressure head 25 is vertically aligned with the detection groove 23 and the distribution pipe 43.

[0039] Specifically: one end of the slide rod 6 is fixedly connected to the discharge pipe 32 to ensure the stability of the slide rod 6 position. The second spring 7 sleeved on the surface of the slide rod 6 pushes the moving frame 35 to reset after the protrusion 37 disengages from the pulley 36, thereby restoring the first partition 33 and the second partition 34 to their initial blocking state. The first gear 262 installed at the output end of the drive motor 261 meshes with the second gear 263 installed on the surface of the support column 21, transmitting torque to the support column 21 through the gear pair. The collection box 8, which runs through one side of the detection table 1, is used to collect the discharged debris and broken pellets. The handle fixedly connected to one side of box 8 makes it easy for operators to pull out and clean it. The bottom of the bracket 9 fixedly connected to the surface of the hydraulic rod 24 is fixedly connected to the detection table 1. The bracket 9 provides suspended support for the hydraulic rod 24 to ensure that its output end pressure head 25 is vertically aligned with the detection groove 23. The spatial layout of the discharge pipe 32, the distribution pipe 43 and the detection groove 23 keeping the same rotation axis allows each station to be aligned in sequence when the disc 22 rotates to realize the material flow. The pressure head 25 is vertically aligned with the detection groove 23 and the distribution pipe 43 to ensure that the pressure direction and scraping direction are accurate.

[0040] The working principle of this invention is as follows: The operator places the bentonite balls to be tested into the storage shell 31, and the bentonite balls smoothly enter the discharge pipe 32. Then, the drive motor 261 is started via an external controller. The drive motor 261, in conjunction with the first gear 262, drives the second gear 263 to rotate. The second gear 263, in conjunction with the support column 21, drives the disc 22 and the support ring 5 to rotate. The support ring 5 drives the protrusion 37 to rotate synchronously. The protrusion 37 remains aligned with the detection groove 23 and can rotate synchronously. When the detection groove 23 rotates to the bottom of the discharge pipe 32, the protrusion 37 can push the pulley 36. The pulley 36, in conjunction with the moving frame 35, drives the first partition 33 and the second partition 34 to move synchronously. Figure 9 As shown, while the first partition 33 moves, it removes the obstruction of the bentonite ball at the bottom of the discharge pipe 32, allowing the bentonite ball to fall into the detection trough 23. While the second partition 34 moves, it blocks the bentonite ball inside the discharge pipe 32, thus achieving the function of separating and discharging, and only one bentonite ball is discharged at a time.

[0041] Then, the drive motor 261 continues to drive the disc 22 and the bentonite ball to rotate clockwise. The bentonite ball rotates to the bottom of the pressure head 25, and then the hydraulic rod 24 is activated. The hydraulic rod 24 drives the pressure sensor 27 and the pressure head 25 to move downward. The pressure head 25 gradually applies pressure to the bentonite ball and the pressure sensor 27 feeds back the pressure value until the bentonite ball is crushed, thus obtaining the compressive strength of the bentonite ball.

[0042] After the bentonite balls are crushed, they are collected in the detection tank 23. Then, the drive motor 261 is controlled to drive the disc 22 to rotate. The disc 22 pushes the bentonite ball fragments to rotate. When the detection tank 23 is aligned with the discharge pipe 42, the bentonite ball fragments are discharged into the collection box 8 through the discharge pipe 42 for collection, which is convenient for staff to clean up.

[0043] As the disc 22 rotates, it causes the distribution pipe 43 to come into contact with the pressure head 25. Then, the hydraulic rod 24 is activated again to move the pressure head 25 downward. When the pressure head 25 moves downward, it pushes the moving wheel 49 downward. The moving wheel 49 drives the telescopic cylinder 48 downward. The telescopic cylinder 48, together with the moving ring 46, squeezes the first spring 47. When the moving ring 46 moves downward to the bottom of the adjusting groove 45, the pressure sensor 27 detects the bottom contact pressure of the pressure head 25 and determines that the scraper 44 and the bottom of the pressure head 25 are horizontally aligned. Then, the controller drives the motor 261 to rotate the disc 22 and the distribution pipe 43. The scraper 44 cleans the debris at the bottom of the pressure head 25. The cleaned debris is discharged into the distribution pipe 43 and continues to rotate with the disc 22. When the distribution pipe 43 is aligned with the discharge pipe 32, the debris is discharged, improving the accuracy of bentonite ball strength testing.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bentonite compressive strength testing device, comprising a testing platform (1), characterized in that: The top of the testing platform (1) is provided with a pressure testing mechanism (2). The pressure testing mechanism (2) includes a support column (21) movably connected inside the testing platform (1), a disc (22) installed on the top of the support column (21), two sets of testing slots (23) opened inside the disc (22), a hydraulic rod (24) set on the top of the disc (22), a pressure head (25) set on the output end of the hydraulic rod (24), a drive assembly (26) set inside the testing platform (1), and a pressure sensor (27) installed on the top of the pressure head (25). The strength of the bentonite ball is tested by the pressure testing mechanism (2). The top of the disc (22) is provided with a discharge mechanism (3). The discharge mechanism (3) includes a storage shell (31) on the top of the disc (22), a discharge pipe (32) connected to one side of the storage shell (31), a first partition (33) and a second partition (34) on both sides of the discharge pipe (32), a movable frame (35) sleeved on the surface of the discharge pipe (32), a pulley (36) installed on one side of the movable frame (35), and a protrusion (37) on one side of the pulley (36). The bentonite balls are automatically discharged through the discharge mechanism (3). A scraping mechanism (4) is provided on one side of the disc (22). The scraping mechanism (4) includes a fixed disc (41) movably connected to the surface of the support column (21), a discharge pipe (42) connected to the bottom of the fixed disc (41), two sets of distribution pipes (43) connected to the top of the disc (22), and a scraper (44) installed on the top of the distribution pipes (43). The scraping mechanism (4) scrapes away the debris adhering to the bottom of the pressure head (25).

2. The bentonite compressive strength testing device according to claim 1, characterized in that: The scraping mechanism (4) further includes an adjustment groove (45) opened inside the fixed plate (41), a moving ring (46) slidably connected inside the adjustment groove (45), a first spring (47) installed at the bottom of the moving ring (46), a telescopic cylinder (48) installed inside the moving ring (46), and a moving wheel (49) installed inside the telescopic cylinder (48).

3. The bentonite compressive strength testing device according to claim 2, characterized in that: The distance between the top of the moving wheel (49) and the scraper (44) is the same as the distance between the moving ring (46) and the bottom of the adjustment groove (45). One end of the first spring (47) is fixedly connected to the inner wall of the adjustment groove (45), and the bottom of the fixed plate (41) is fixedly connected to the detection table (1).

4. The bentonite compressive strength testing device according to claim 1, characterized in that: The first partition (33) is fixedly connected to the movable frame (35) on one side, and the second partition (34) is fixedly connected to the movable frame (35) on one side.

5. The bentonite compressive strength testing device according to claim 1, characterized in that: The top of the disk (22) is fixedly connected to a support ring (5), and one side of the protrusion (37) is fixedly connected to the support ring (5).

6. The bentonite compressive strength testing device according to claim 1, characterized in that: The movable frame (35) has a sliding rod (6) inside, one end of which is fixedly connected to the discharge pipe (32), and a second spring (7) is sleeved on the surface of the sliding rod (6).

7. The bentonite compressive strength testing device according to claim 1, characterized in that: The drive assembly (26) includes a drive motor (261) installed inside the test bench (1), a first gear (262) installed at the output end of the drive motor (261), and a second gear (263) installed on the surface of the support column (21). One side of the first gear (262) meshes with the second gear (263).

8. The bentonite compressive strength testing device according to claim 1, characterized in that: A collection box (8) is provided through one side of the testing station (1), and a handle is fixedly connected to one side of the collection box (8).

9. The bentonite compressive strength testing device according to claim 1, characterized in that: The hydraulic rod (24) is fixedly connected to a bracket (9), and the bottom of the bracket (9) is fixedly connected to the testing table (1).

10. The bentonite compressive strength testing device according to claim 1, characterized in that: The discharge pipe (32), the distribution pipe (43) and the detection groove (23) are kept on the same rotation axis, and the pressure head (25) is vertically aligned with the detection groove (23) and the distribution pipe (43).

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