A rock shear strength testing device for geological exploration

Abstract

This invention relates to the field of geological rock sample testing technology, specifically to a rock shear strength testing device for geological exploration. The device includes a platform and a main frame installed at the chamfered top of the platform. The top of the platform has a groove, and a loading slide plate is movably connected to the inner side of the groove. A lower frame is fixedly connected to the top of the loading slide plate, and a flat plate is fixedly connected to the top of the lower frame. The top of the flat plate has several mating holes. This invention provides a rock shear strength testing device for geological exploration, which features the advantage of gradually lowering the ring shear assembly under the push of a loading cylinder until the bottom of the upper plate contacts the top of the rock sample and applies a certain pressure. Then, the mating arm rotates synchronously along the outer side of the upper plate, causing the upper contact plate to directly contact the circumference of the upper half of the rock sample, forming a rapid contact and fixation. Subsequently, the ring shear frame can be rotated circumferentially along the bottom of the upper frame to apply torque loading to the rock sample.

Description

Technical Field

[0001] This invention relates to the field of geological rock sample testing technology, specifically to a rock shear strength testing device for geological exploration. Background Technology

[0002] As is well known, rock sample shear strength testing is a core test used in geological exploration, geotechnical engineering, and rock mechanics research to determine the rock's resistance to shear failure. By applying shear loads to rock samples, key mechanical parameters such as cohesion and internal friction angle are obtained, providing a basis for slope stability, foundation bearing capacity, surrounding rock support, tunnel and mining engineering design. Commonly used test methods include indoor direct rock sample shear test, triaxial compression test, variable angle plate shear test, and in-situ shear test. During the test, standard prepared complete rock cores or block rock samples must be used, and the sample size, loading rate, and confining pressure conditions must be strictly controlled. At the same time, the stress-strain relationship and failure mode of the rock sample during the shearing process are recorded to accurately determine the shear strength index of the rock under different stress states.

[0003] In existing technologies, direct shear testing is often used for in-situ shear tests to facilitate equipment transport. However, due to the different geological exploration areas, smaller rock samples are often used in intact and hard bedrock areas, while larger rock samples are needed for broken and loose rock masses. However, the rock sample fixing parts of shear testing equipment can usually only be adapted to rock and soil samples with a smaller size range. It is also quite troublesome to carry a large number of fixing devices that can be adapted to different sizes during field operations. At the same time, the testing method is relatively simple and inconvenient to use.

[0004] Based on the above-mentioned situation, we found that existing rock shear strength testing devices have difficulty avoiding the above problems at the same time. Therefore, we propose a rock shear strength testing device for geological exploration that can quickly load and unload rock samples, quickly switch to the appropriate state for different sample sizes, and perform direct shear or ring shear tests as needed. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a rock shear strength testing device for geological exploration, which has the advantages of rapid loading and unloading of rock samples, quick switching to a suitable state for different sample sizes, and the ability to perform direct shear or circumferential shear tests as needed.

[0007] (II) Technical Solution

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a rock shear strength testing device for geological exploration, comprising a base and a main frame installed at the top chamfer of the base, the top of the base having a groove, a loading slide plate being movably connected to the inner side of the groove, a lower frame being fixedly connected to the top of the loading slide plate, a flat plate being fixedly connected to the top of the lower frame, a plurality of mating holes being opened on the top of the flat plate, a lower abutment plate being movably connected to the top of the flat plate, a pushing component being provided at the bottom of the flat plate, a ring shear component being installed on the inner side of the main frame, and loading electric cylinders being fixedly connected to both sides of the main frame;

[0009] The ring shear assembly includes a top frame, the telescopic end of the loading electric cylinder is fixedly connected to the top frame, an upper frame is fixedly connected to the bottom of the top frame, a ring shear frame is provided at the bottom of the upper frame, an upper plate frame is fixedly connected to the bottom of the ring shear frame, four cooperating arms are rotatably connected to the outer side of the upper plate frame, and an upper abutment plate is rotatably connected to the bottom of the cooperating arms.

[0010] Using the above technical solution, a flat plate frame is set up to directly contact the bottom surface of the rock sample. According to the size of the rock sample, two lower abutment plates can be inserted into the corresponding mating holes at the top of the flat plate frame to form a rectangular enclosure. The lower half of the rock sample is placed between the lower abutment plates. The ring shear assembly located inside the main frame can then gradually descend under the push of the loading electric cylinder until the bottom of the upper plate frame contacts the top of the rock sample and applies a certain pressure. Then, the mating arm is rotated synchronously along the outside of the upper plate frame so that the upper abutment plate directly contacts the perimeter of the upper half of the rock sample to form a quick and secure fit. Subsequently, the ring shear frame can be rotated circumferentially along the bottom of the upper frame to apply torque loading to the rock sample. When a direct shear test is required, the position of the ring shear frame can be fixed, and then the loading slide plate can be pushed horizontally along the inner side of the groove of the base so that the lower frame and the flat plate frame connected to it can apply horizontal shearing force through the lower abutment plates.

[0011] The present invention is further configured such that: the front and rear sides of the bottom of the pedestal are fixedly connected to limit guide rails, and a slide is fixedly connected to the outer side of the limit guide rails; the slide is fixedly connected to the loading slide plate on the side of the slide plate close to the loading slide plate.

[0012] By adopting the above technical solution, and by setting a limit guide rail in conjunction with the slide, the loading slide can be supported and guided as it slides horizontally along the platform, so that it always moves in a horizontal direction.

[0013] The present invention is further configured such that: a mating pin is fixedly connected to the bottom of the lower abutment plate, the bottom of the mating pin is inserted into a mating hole, and a sleeve is connected to the bottom of the lower abutment plate at the height corresponding to the position of the mating hole.

[0014] By adopting the above technical solution, and by setting a mating pin, when the lower abutment plate is installed on the top of the flat plate frame, the mating pin can be directly inserted into the mating hole and extended into the inside of the sleeve along the mating hole to increase the insertion length and improve the stress strength.

[0015] The present invention is further configured such that: the pushing component includes a pushing electric cylinder fixedly connected to both sides of the lower abutment plate, the telescopic end of the pushing electric cylinder is fixedly connected to a pushing frame, the inner side of the pushing frame is fixedly connected to a pipe assembly, the top of the pipe assembly is provided with several branch pipes, the outer side of the branch pipes is provided with airflow holes, the outer side of the branch pipes is inserted into the inner side of the pipe sleeve, and the rear side of the pipe assembly is connected to an external air source.

[0016] By adopting the above technical solution, a pusher cylinder is set up to push and pull the pipe assembly by extending or shortening the telescopic end of the pusher frame. When the rock sample is difficult to remove due to high tension caused by the wet and smooth bottom surface, the pipe assembly can be moved upward and the lower abutment plate can be pushed out by the matching pin. At the same time, the rock sample can be lifted by the top of the pipe assembly for easy removal and adjustment. Meanwhile, an external air source can be connected to blow air through the air outlet of the pipe assembly to blow off the residue and residual water on the top of the flat plate frame, so as to facilitate subsequent processing and avoid cleaning inconvenience.

[0017] The present invention is further configured such that: a loading hydraulic cylinder is fixedly connected to the inner side of the groove of the base; the telescopic end of the loading hydraulic cylinder is fixedly connected to the left side of the loading slide plate; a pressure sensing device is fixedly connected to the right side of the main frame; and the left side of the pressure sensing device is fixedly connected to the right side of the lower abutment plate.

[0018] The above technical solution involves setting up a loading hydraulic cylinder for pushing and pulling the loading slide plate after connecting to external hydraulic equipment, and setting up a pressure sensing device to detect the pressure generated during pushing and pulling.

[0019] The present invention is further configured such that: a leg frame is fixedly connected to the bottom of the pedestal, a pull-out bracket is provided at the bottom of the inner side of the leg frame, and a cover is fixedly connected to the outer side of the leg frame.

[0020] By adopting the above technical solution, the leg frame is set up for stable placement of the device or installation at the working position. The set shield can prevent fragments from flying when the rock sample collapses. At the same time, it can block debris or water during purging to a certain extent, so that the debris or water falls into the pull-out frame after being blocked, making it easy to collect in a unified manner.

[0021] The present invention is further configured such that: an auxiliary frame is fixedly connected to the top of the main frame, the inner side of the auxiliary frame is slidably connected to the top frame, a buckle is fixedly connected to the bottom of the upper frame, a rotating sleeve is rotatably connected to the outer side of the buckle, and the bottom of the rotating sleeve is fixedly connected to the ring shear frame.

[0022] By adopting the above technical solution, the auxiliary frame can play a role in assisting and limiting the movement of the top frame when it moves vertically. The buckle and rotating sleeve are used to connect the ring shear frame and the upper frame, and enable the ring shear frame to rotate stably along the upper frame.

[0023] The present invention is further configured such that: a support frame is fixedly connected to the right side of the upper frame, a loading motor and a reducer are fixedly connected to the inner side of the support frame, the output ends of the loading motor and the reducer pass through the support frame and are fixedly connected to gears, and an external gear ring is fixedly connected to the outer side of the rotating sleeve, and the external gear ring and the gear are meshed together.

[0024] By adopting the above technical solution, a support frame is set up to install and support the loading motor and reducer, and the external gear ring located outside the rotating sleeve can be driven by gears to achieve the effect of driving the ring shear frame to rotate.

[0025] The present invention is further configured such that: a lifting frame is provided on the top of the upper plate frame, and four locking frames are rotatably connected to the outer side of the lifting frame, and the four locking frames are rotatably connected to four cooperating arms respectively.

[0026] By adopting the above technical solution, by setting up a lifting frame, four locking frames can be driven to push and pull the mating arms during vertical lifting, so that the mating arms can rotate along the upper plate frame and fix the rock sample.

[0027] The present invention is further configured such that: a screw is rotatably connected to the top of the upper plate frame via a bearing, the outer side of the screw is threadedly connected to the lifting frame, and a servo motor is fixedly connected to the top of the ring shear frame, the output end of the servo motor being fixedly connected to the top of the screw.

[0028] By adopting the above technical solution, a servo motor can be set up to drive the lifting frame to move vertically when the drive screw rotates, so as to achieve the effect of driving the structure to move.

[0029] (III) Beneficial Effects

[0030] Compared with the prior art, the present invention provides a rock shear strength testing device for geological exploration, which has the following beneficial effects:

[0031] This geological exploration rock shear strength testing device uses a flat plate frame for direct contact with the bottom surface of the rock sample. Based on the sample size, two lower support plates are inserted into corresponding mating holes at the top of the flat plate frame to form a rectangular enclosure. The lower half of the rock sample is placed between the lower support plates. The ring shear assembly, located inside the main frame, gradually descends under the push of the loading cylinder until the bottom of the upper plate frame contacts the top of the rock sample, applying pressure. Then, the mating arm rotates synchronously along the outer side of the upper plate frame, allowing the upper support plate to directly contact the perimeter of the upper half of the rock sample for rapid fixation. The ring shear frame can then be rotated circumferentially along the bottom of the upper frame to apply torque loading to the rock sample. When a direct shear test is required, the position of the ring shear frame can be fixed, and then the loading slide plate is horizontally pushed along the inner side of the groove on the platform, allowing the connected lower frame and flat plate frame to apply horizontal shear force through the lower support plates. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the connection of the base in this invention;

[0034] Figure 3 This is a schematic diagram of the push component in this invention;

[0035] Figure 4 This is a schematic diagram of the bottom structure of the pedestal in this invention;

[0036] Figure 5 This is a schematic diagram of the ring shear assembly in this invention;

[0037] Figure 6 This is a schematic diagram of the connection of the ring shear frame in this invention;

[0038] Figure 7 This is a schematic diagram of the connection of the upper mounting bracket in this invention.

[0039] In the diagram: 1. Base; 2. Main frame; 3. Loading slide plate; 4. Lower mounting frame; 5. Flat plate frame; 6. Mating hole; 7. Lower backing plate; 8. Pushing assembly; 81. Pushing electric cylinder; 82. Pushing frame; 83. Pipe assembly; 9. Ring shear assembly; 91. Top frame; 92. Upper mounting frame; 93. Ring shear frame; 94. Upper plate frame; 95. Mating arm; 96. Upper backing plate; 10. Loading electric cylinder; 11. Limit guide 12. Rail; 13. Slide; 14. Fitting pin; 15. Sleeve; 16. Loading hydraulic cylinder; 17. Pressure sensor; 18. Leg bracket; 19. Pull-out bracket; 20. Shield; 21. Auxiliary bracket; 22. Buckle; 23. Rotary sleeve; 24. Backrest; 25. Loading motor and reducer; 26. Gear; 27. External gear ring; 28. Lifting frame; 29. ​​Clamping frame; 30. Screw; 41. Servo motor. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] Please see Figure 1-7 A rock shear strength testing device for geological exploration includes a base 1 and a main frame 2 installed at the top chamfer of the base 1. The top of the base 1 is provided with a groove, and a loading slide plate 3 is movably connected to the inner side of the groove. A lower frame 4 is fixedly connected to the top of the loading slide plate 3. A flat plate 5 is fixedly connected to the top of the lower frame 4. Several mating holes 6 are opened on the top of the flat plate 5. A lower abutment plate 7 is movably connected to the top of the flat plate 5. A pushing component 8 is provided at the bottom of the flat plate 5. A ring shear component 9 is installed on the inner side of the main frame 2. Loading electric cylinders 10 are fixedly connected to both sides of the main frame 2.

[0043] The ring shear assembly 9 includes a top frame 91, the telescopic end of the loading electric cylinder 10 is fixedly connected to the top frame 91, an upper frame 92 is fixedly connected to the bottom of the top frame 91, a ring shear frame 93 is provided at the bottom of the upper frame 92, an upper plate frame 94 is fixedly connected to the bottom of the ring shear frame 93, four mating arms 95 are rotatably connected to the outer side of the upper plate frame 94, and an upper abutment plate 96 is rotatably connected to the bottom of the mating arms 95.

[0044] By setting up a flat plate frame 5 for direct contact with the bottom surface of the rock sample, two lower abutment plates 7 can be inserted into the corresponding mating holes 6 at the top of the flat plate frame 5 according to the size of the rock sample, forming a rectangular enclosure. The lower half of the rock sample is placed between the lower abutment plates 7. The ring shear assembly 9 located inside the main frame 2 can then gradually descend under the push of the loading electric cylinder 10 until the bottom of the upper plate frame 94 contacts the top of the rock sample and applies a certain pressure. Then, the mating arm 95 is rotated synchronously along the outside of the upper plate frame 94, so that the upper abutment plate 96 directly contacts the periphery of the upper half of the rock sample to form a quick abutment fixation. Then, the ring shear frame 93 can be rotated circumferentially along the bottom of the upper mounting frame 92 to apply torque loading to the rock sample. When a direct shear test is required, the position of the ring shear frame 93 can be fixed, and then the loading slide plate 3 is pushed horizontally along the inner side of the groove of the base 1, so that the lower mounting frame 4 and the flat plate frame 5 connected thereto apply horizontal shearing force through the lower abutment plates 7.

[0045] The base 1 has limit rails 11 fixedly connected to both the front and rear sides of its bottom. A slide 12 is fixedly connected to the outer side of the limit rails 11, and the slide 12 is fixedly connected to the loading slide 3 on the side closest to it. By using the limit rails 11 and slide 12, the loading slide 3 can be supported and guided as it slides horizontally along the base 1, ensuring it remains horizontal. A mating pin 13 is fixedly connected to the bottom of the lower support plate 7, and the bottom of the mating pin 13 is inserted into a mating hole 6. A sleeve 14 is connected to the bottom of the lower support plate 7 at the height corresponding to the mating hole 6. By using the mating pin 13, when the lower support plate 7 is installed on the top of the flat plate frame 5, the mating pin 13 can be directly inserted into the mating hole 6, and the slide 13 can be moved horizontally along the base 1. The mating hole 6 extends into the sleeve 14 to increase the insertion length and improve the stress strength. A loading hydraulic cylinder 15 is fixedly connected to the inner side of the groove of the base 1. The telescopic end of the loading hydraulic cylinder 15 is fixedly connected to the left side of the loading slide plate 3. A pressure sensing device 16 is fixedly connected to the right side of the main frame 2. The left side of the pressure sensing device 16 is fixedly connected to the right side of the lower abutment plate 7. The loading hydraulic cylinder 15 is used to push and pull the loading slide plate 3 after connecting external hydraulic equipment. The pressure sensing device 16 is used to detect the pressure generated during pushing and pulling. An auxiliary frame 20 is fixedly connected to the top of the main frame 2. The inner side of the auxiliary frame 20 is slidably connected to the top frame 91. A buckle 21 is fixedly connected to the bottom of the upper frame 92. A rotating sleeve 22 is rotatably connected to the outer side of the buckle 21. The bottom of frame 2 is fixedly connected to the ring shear frame 93. An auxiliary frame 20 is provided to assist in limiting the vertical movement of the top frame 91. A buckle 21, in conjunction with a rotating sleeve 22, connects the ring shear frame 93 and the upper frame 92, allowing the ring shear frame 93 to rotate stably along the upper frame 92. A support frame 23 is fixedly connected to the right side of the upper frame 92. A loading motor and a reducer 24 are fixedly connected to the inner side of the support frame 23. The output ends of the loading motor and reducer 24 pass through the support frame 23 and are fixedly connected to a gear 25. An external gear ring 26 is fixedly connected to the outer side of the rotating sleeve 22. The external gear ring 26 and the gear 25 mesh with each other. The support frame 23 is used to install and support the loading motor and reducer 24, and can be driven by the gear 25. The external toothed ring 26 located outside the rotating sleeve 22 serves to drive the rotation of the ring shear frame 93. A lifting frame 27 is provided on the top of the upper plate frame 94. Four locking frames 28 are rotatably connected to the outer side of the lifting frame 27. Each of the four locking frames 28 is rotatably connected to one of the four mating arms 95. By setting the lifting frame 27, during vertical lifting, the four locking frames 28 can be driven to push and pull the mating arms 95, allowing the mating arms 95 to rotate along the upper plate frame 94 and fix the rock sample. A screw 29 is rotatably connected to the top of the upper plate frame 94 via a bearing. The outer side of the screw 29 is threadedly connected to the lifting frame 27. A servo motor 30 is fixedly connected to the top of the ring shear frame 93. The output end of the servo motor 30 is fixedly connected to the top of the screw 29. By setting the servo motor 30…When the drive screw 29 rotates, it can drive the lifting frame 27 to move vertically, thus achieving the effect of driving the structure to move.

[0046] The working principle of this embodiment is as follows: Based on the actual size of the rock sample, the lower support plate 7 is inserted into the corresponding mating hole 6 of the flat plate frame 5 through the bottom mating pin 13 to form a rectangular enclosure that fits the bottom of the rock sample and place the rock sample. The loading electric cylinder 10 drives the top frame 91 and the ring shear assembly 9 to move down, so that the upper plate frame 94 presses the top of the rock sample. Then, the servo motor 30 drives the screw 29 to rotate, driving the lifting frame 27 to rise and fall. Through the locking frame 28, the mating arm 95 is pushed and pulled, so that the four upper support plates 96 simultaneously retract inward, clamping the upper half of the rock sample around, completing the quick clamping and fixing. After the clamping is completed, the loading motor and reducer 24 are started, and the gear 25 and the outer toothed ring 26 on the outside of the rotating sleeve 22 are connected. The meshing transmission drives the ring shear frame 93 and the upper plate frame 94 to rotate circumferentially, applying torsional shear load to the rock sample to achieve the ring shear strength test of the rock. The buckle 21 and the rotating sleeve 22 cooperate to ensure the smooth rotation of the ring shear frame 93. The auxiliary frame 20 limits the vertical movement of the top frame 91 to ensure the test accuracy. The direct shear test process locks the ring shear frame 93 to keep it stationary. The loading hydraulic cylinder 15 is started, and the loading slide plate 3 is pushed and pulled horizontally. Under the guidance and support of the limit guide rail 11 and the slide 12, the lower frame 4 and the plate frame 5 move horizontally with the loading slide plate 3. The lower abutment plate 7 applies horizontal shear force to the rock sample. The pressure sensor 16 detects the horizontal shear load value in real time to complete the direct shear strength test of the rock.

[0047] Example 2

[0048] refer to Figure 1-4 A rock shear strength testing device for geological exploration also includes a pushing component 8, wherein the pushing component 8 includes a pushing electric cylinder 81 fixedly connected to both sides of the lower abutment plate 7, a pushing frame 82 fixedly connected to the telescopic end of the pushing electric cylinder 81, a pipe assembly 83 fixedly connected to the inner side of the pushing frame 82, a number of branch pipes provided at the top of the pipe assembly 83, an airflow hole opened on the outer side of the branch pipes, the outer side of the branch pipes being inserted into the inner side of the pipe sleeve 14, and an external air source connected to the rear side of the pipe assembly 83;

[0049] By setting up a pusher cylinder 81, the pusher frame 82 can extend or shorten the telescopic end to push and pull the pipe assembly 83 to lift and lower. When the rock sample is difficult to remove due to high tension caused by the wet and smooth bottom surface, the pipe assembly 83 can be moved upward and the lower abutment plate 7 can be pushed out by the matching pin 13. At the same time, the rock sample can be lifted by the top of the pipe assembly 83 for easy removal and adjustment. At the same time, an external air source can be connected to blow air out through the airflow hole inside the pipe assembly 83 to blow off the residue and residual water on the top of the flat plate frame 5 for later processing and to avoid cleaning inconvenience.

[0050] The base 1 is fixedly connected to the bottom of the leg frame 17. The bottom of the inner side of the leg frame 17 is provided with a pull-out frame 18. The outer side of the leg frame 17 is fixedly connected to a shield 19. The leg frame 17 is used to stably place the device or install it in the working position. The shield 19 can prevent fragments from flying when the rock sample collapses. At the same time, it can block debris or water during purging to a certain extent, so that the debris or water falls into the pull-out frame 18 after being blocked, making it easy to collect.

[0051] Working principle of this embodiment: After the test is completed, if the rock sample is difficult to remove due to moisture or stickiness, the pusher cylinder 81 is activated to extend and retract, which drives the pipe assembly 83 to move upward through the pusher frame 82. The branch pipe of the pipe assembly 83 lifts the mating pin 13, pushing the lower abutment plate 7 out of the flat plate frame 5. At the same time, the top of the pipe assembly 83 directly lifts the rock sample, so that the rock sample is removed from the flat plate frame 5, completing the convenient sample removal. The table is pneumatically blew to clean the external air source on the rear side of the pipe assembly 83. The gas is sprayed out from the airflow hole of the branch pipe inside the pipe assembly 83 to blow and clean the rock debris and residual water on the top surface of the flat plate frame 5, so as to avoid the accumulation of residue and affect subsequent tests. Protection and debris collection: When the rock sample is sheared and broken, the shield 19 blocks the debris from flying, ensuring the safety of the operation. During the blowing process, the rock debris and water that are blocked fall into the pull-out frame 18 inside the leg frame 17 along the shield 19. The pull-out frame 18 can be pulled out directly to clean up the waste.

[0052] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. Those skilled in the art can make modifications to this embodiment without contributing any inventive step after reading this specification. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rock shear strength testing device for geological exploration, comprising a platform (1) and a main frame (2) installed at the top chamfer of the platform (1), characterized in that: The top of the platform (1) is provided with a groove, and a loading slide plate (3) is movably connected to the inner side of the groove. A lower frame (4) is fixedly connected to the top of the loading slide plate (3). A flat plate frame (5) is fixedly connected to the top of the lower frame (4). Several mating holes (6) are opened on the top of the flat plate frame (5). A lower support plate (7) is movably connected to the top of the flat plate frame (5). A pushing component (8) is provided at the bottom of the flat plate frame (5). A ring shear component (9) is installed on the inner side of the main frame (2). Loading electric cylinders (10) are fixedly connected to both sides of the main frame (2). The ring shear assembly (9) includes a top frame (91), the telescopic end of the loading electric cylinder (10) is fixedly connected to the top frame (91), the bottom of the top frame (91) is fixedly connected to an upper frame (92), the bottom of the upper frame (92) is provided with a ring shear frame (93), the bottom of the ring shear frame (93) is fixedly connected to an upper plate frame (94), the outer side of the upper plate frame (94) is rotatably connected to four cooperating arms (95), and the bottom of the cooperating arms (95) is rotatably connected to an upper abutment plate (96).

2. The rock shear strength testing device for geological exploration according to claim 1, characterized in that: The base (1) has a fixed guide rail (11) on both the front and rear sides of its bottom. A slide (12) is fixedly connected to the outer side of the guide rail (11). The slide (12) is fixedly connected to the loading slide (3) on the side close to the loading slide (3).

3. The rock shear strength testing device for geological exploration according to claim 1, characterized in that: The bottom of the lower backing plate (7) is fixedly connected to a mating pin (13), the bottom of the mating pin (13) is inserted into the mating hole (6), and the bottom of the lower backing plate (7) is connected to a sleeve (14) at the position height corresponding to the mating hole (6).

4. The rock shear strength testing device for geological exploration according to claim 3, characterized in that: The pushing component (8) includes a pushing electric cylinder (81) fixedly connected to both sides of the lower abutment plate (7). The extension end of the pushing electric cylinder (81) is fixedly connected to a pushing frame (82). The inner side of the pushing frame (82) is fixedly connected to a pipe assembly (83). The top of the pipe assembly (83) is provided with several branch pipes. The outer side of the branch pipes is provided with airflow holes. The outer side of the branch pipes is inserted into the inner side of the pipe sleeve (14). The rear side of the pipe assembly (83) is connected to an external air source.

5. The rock shear strength testing device for geological exploration according to claim 1, characterized in that: A loading hydraulic cylinder (15) is fixedly connected to the inner side of the groove of the base (1). The telescopic end of the loading hydraulic cylinder (15) is fixedly connected to the left side of the loading slide plate (3). A pressure sensing device (16) is fixedly connected to the right side of the main frame (2). The left side of the pressure sensing device (16) is fixedly connected to the right side of the lower abutment plate (7).

6. The rock shear strength testing device for geological exploration according to claim 1, characterized in that: The bottom of the pedestal (1) is fixedly connected to a leg frame (17), and a pull-out bracket (18) is provided on the bottom of the inner side of the leg frame (17). A cover (19) is fixedly connected to the outer side of the leg frame (17).

7. The rock shear strength testing device for geological exploration according to claim 1, characterized in that: An auxiliary frame (20) is fixedly connected to the top of the main frame (2). The inner side of the auxiliary frame (20) is slidably connected to the top frame (91). A buckle (21) is fixedly connected to the bottom of the upper frame (92). A rotating sleeve (22) is rotatably connected to the outer side of the buckle (21). The bottom of the rotating sleeve (22) is fixedly connected to the ring shear frame (93).

8. The rock shear strength testing device for geological exploration according to claim 7, characterized in that: A support frame (23) is fixedly connected to the right side of the upper frame (92). A loading motor and a reducer (24) are fixedly connected to the inner side of the support frame (23). The output end of the loading motor and the reducer (24) passes through the support frame (23) and is fixedly connected to a gear (25). An external gear ring (26) is fixedly connected to the outer side of the rotating sleeve (22). The external gear ring (26) and the gear (25) are meshed together.

9. A rock shear strength testing device for geological exploration according to claim 8, characterized in that: The top of the upper plate frame (94) is provided with a lifting frame (27), and four locking frames (28) are rotatably connected to the outside of the lifting frame (27). The four locking frames (28) are rotatably connected to four cooperating arms (95) respectively.

10. A rock shear strength testing device for geological exploration according to claim 9, characterized in that: The top of the upper plate frame (94) is rotatably connected to a screw (29) via a bearing. The outer side of the screw (29) is threadedly connected to the lifting frame (27). The top of the ring shear frame (93) is fixedly connected to a servo motor (30). The output end of the servo motor (30) is fixedly connected to the top of the screw (29).

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