Multi-shaft rock dynamic and static load testing machine

Abstract

The invention discloses a multi-axis rock dynamic and static load testing machine, and relates to basalt fiber new material rock detection, the multi-axis rock dynamic and static load testing machine comprises a testing machine body and a testing platform fixedly mounted in the middle of the testing machine body; a dynamic load assembly is arranged above the testing machine body, and the dynamic load assembly comprises a dynamic pressure applying device; wherein the dynamic pressure applying device is used for carrying out a dynamic load test on the fiber new material rock on the surface of the test platform through speed-adjustable impact and vibration needles; static load assemblies are arranged on the front side and the rear side of the testing machine body, and each static load assembly comprises a static pressure applying device; wherein the static pressure exerting device moves oppositely at a constant speed. According to the multi-axis rock dynamic and static load testing machine, a plurality of test surfaces of new material rocks are treated through the positioning mechanism and the dust removal mechanism, the situation that stress points are damaged by rock particles is avoided, meanwhile, test detection is conducted on the new material rocks through staggered dynamic and static load tests, and the data accuracy and the test efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of basalt fiber new material rock detection, in particular to a multi-axle type rock dynamic and static load testing machine. BACKGROUND

[0002] The basalt fiber new material rock is an inorganic non-metallic fiber material made of natural basalt ore as raw material after high-temperature melting and wire drawing, which has the characteristics of high strength, high temperature resistance, corrosion resistance, good insulation, etc., and has the advantage of environmental protection in the whole life cycle. Through static load testing (such as tension, compression), the tensile strength (up to several times of steel material) and elastic modulus of basalt fiber are determined, and through dynamic load testing (such as fatigue, impact), the durability of basalt fiber under long-term alternating load is evaluated, and the synergistic deformation ability (similar thermal expansion coefficient) and crack resistance of basalt fiber and concrete are verified to avoid structural failure caused by load mutation. The invention with publication number CN113237760A discloses a multi-field coupling true triaxial dynamic and static load rock testing device. The X, Y and Z axes of the coordinate system established with the geometric center of the rock specimen as the origin are respectively provided with a shooting rod, and the shooting rod is attached to the rock specimen. The dynamic load and fluid pressure coupling effect are realized in the true triaxial, and the counterforce frame for static load is used to apply static load to the specimen, and the application position is located at the end of the square rod, which avoids the influence of static load on dynamic load monitoring.

[0003] The invention with publication number CN111122323B discloses a test device and method for crack resistance mechanism of anchor rod under dynamic and static load of surrounding rock. The distribution and expansion of cracks of rock mass under different anchoring states under the action of static load and dynamic load are simulated by using transparent rock mass material, the distortion problem in the information conversion process of monitoring equipment such as acoustic emission or CT scanning is improved, the development process of pre-existing cracks during loading is studied, and the performance of anchoring body is analyzed from the perspective of energy, and then the mechanism of anchor rod for reinforcing and preventing crack expansion and development of surrounding rock is explored.

[0004] However, the dynamic and static load test of the above-mentioned new material rock still has the following problems: the dynamic load mechanism and the static load mechanism are used to test the new material rock, but the dynamic and static test mechanisms act on a single surface of the new material rock. After the first test, the internal structure of the new material rock is easily damaged, which affects the accuracy of the data in the second test, and the particles remaining on the surface of the new material rock are easy to form action points, which further damage the strength of the new material rock.

[0005] Therefore, we propose a multi-axle type rock dynamic and static load testing machine to solve the above-mentioned problems. SUMMARY

[0006] The purpose of this invention is to provide a multi-axis rock dynamic and static load testing machine to solve the problems of existing tests on new material rocks using dynamic and static load mechanisms. However, both dynamic and static test mechanisms act on a single surface of the new material rock, which can easily damage the internal structure of the new material rock after the first test, affecting the accuracy of the data in subsequent tests. At the same time, residual particles on the surface of the new material rock can easily form points of action, thereby damaging the strength of the new material rock.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multiaxial rock dynamic and static load testing machine, comprising a testing machine body and a testing platform fixedly installed in the middle of the testing machine body; A dynamic load assembly is provided above the main body of the testing machine, and the dynamic load assembly includes a dynamic pressure applicator. Among them, the dynamic pressure device conducts dynamic load tests on the fiber-reinforced rock on the surface of the test platform through adjustable-speed impact and vibration; Static load assemblies are provided on the front and rear sides of the testing machine body, and the static load assemblies include static pressure applicators. Among them, the static pressure device performs a static load test on the fiber-reinforced rock on the surface of the test platform by moving in opposite directions at a uniform speed.

[0008] Preferably, the dynamic load assembly includes dynamic slide bars fixedly installed on the left and right sides inside the testing machine body, and a dynamic sliding plate is provided through the outside of the dynamic slide bars. The dynamic sliding plate is installed on the top of the dynamic pressure applicator to prevent the dynamic pressure applicator from shifting downwards via the dynamic slide bars.

[0009] Preferably, the static load assembly includes a static base plate fixedly installed on the front and rear sides of the testing machine body, and a guide screw is rotatably provided at the bottom of the static base plate through a bearing. The guide screw is threaded to the bottom end of the static pressure applicator, and the middle part of the static pressure applicator slides through the static base plate to apply stable pressure to the fiber new material rock from the front and rear directions.

[0010] Preferably, positioning mechanisms are provided on the left and right sides of the testing machine body, and the positioning mechanisms include positioning forks that are slidably installed on the left and right sides of the testing machine body, and the bottom end of the positioning forks is threadedly connected to a positioning screw, while the positioning screw is rotatably installed on the left and right sides inside the testing machine body.

[0011] Preferably, the positioning mechanism includes positioning support rods, which are bolt-locked to the inner end of the positioning fork rods, and the symmetrically arranged positioning support rods extend to the left and right sides of the test platform for matching and positioning of fiber new material rocks of different specifications.

[0012] Preferably, the testing machine body includes a dust removal mechanism, and the dust removal mechanism includes a torsion spring installed inside the dynamic slide bar and a drive shaft, and a drive gear is fixedly installed on the lower outer wall of the drive shaft. The front of the drive gear is meshed with an incomplete rack, and the incomplete rack is fixedly installed on the inner side of the top surface of the positioning fork.

[0013] Preferably, the dust removal mechanism includes a transmission bracket, the lower end of which is fixedly installed on the outer end of the drive shaft, and the upper end of which is elastically rotatably connected to the outer end of the flipping plate via the shaft. The other end of the flipping plate is rotatably connected to a dust removal plate via a torsion spring, and a dust removal nozzle is connected through the inside of the dust removal plate to clean the surface of the fiber new material rock.

[0014] Preferably, the dust removal mechanism includes an incomplete bevel tooth, which is fixedly installed on the outer wall of the dynamic slide bar at the upper end of the drive shaft. The inner side of the incomplete bevel tooth is meshed with a transmission bevel tooth, which is fixedly installed at the connection between the transmission bracket and the tilting plate, for driving the tilting plate and the dust removal plate to rotate.

[0015] Preferably, the testing machine body includes a pressure supply mechanism, and the pressure supply mechanism includes a pressure supply sleeve fixedly installed at the lower end of the positioning fork, and a sealing plug rod is slidably installed inside the pressure supply sleeve, and the inner end of the sealing plug rod is fixedly connected to the inside of the testing machine body. At the same time, a one-way air inlet valve is provided through the inside and outside of the pressure supply sleeve.

[0016] Preferably, the pressure supply mechanism includes a one-way exhaust pipe that extends through the inside and outside of the pressure supply sleeve. The one-way exhaust pipe is made of stainless steel corrugated braided hose to avoid pressure affecting airflow during rotation. The inner end of the one-way exhaust pipe is connected through a dust removal nozzle inside the dust removal plate. Thus, during positioning, the dust removal plate and the dust removal nozzle rotate to clean multiple surfaces of the fiber new material rock, improving the accuracy of dynamic and static load test data.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This multi-axis rock dynamic and static load testing machine treats multiple test surfaces of the new material rock through a positioning mechanism and a dust removal mechanism, avoiding damage to the stress points by rock particles. At the same time, the staggered dynamic and static load tests are used to test and detect the new material rock, improving data accuracy and testing efficiency. The specific details are as follows: 1. The positioning screw inside the testing machine rotates, and the threaded positioning fork is limited by the testing machine body so that the positioning support rod after the inner end is adjusted can be attached to the left and right outer walls of the new material rock. This limits the left and right direction of the new material rock, without affecting the dynamic and static load tests on the top and front and back sides, and avoids displacement and misalignment during the dynamic and static load tests.

[0018] 2. The positioning fork moving inward drives the incomplete rack, which in turn drives the drive shaft and transmission bracket to rotate when meshing with the drive gear. The transmission bracket then drives the upper flip plate and dust removal plate to rotate inward. When disengaging, the rack rotates in the opposite direction to reset, thus avoiding affecting the dynamic and static load tests.

[0019] Furthermore, when the transmission bracket drives the tilting plate and the dust removal plate to rotate inward, it drives the transmission bevel teeth and the incomplete bevel teeth to mesh, thereby driving the tilting plate and the dust removal plate to rotate. In conjunction with the rotation of the transmission bracket, multiple test surfaces of the new material rock are cleaned.

[0020] 3. The hydraulic cylinder above the testing machine body drives the dynamic slide plate and dynamic pressure device to descend along the dynamic slide bar through speed change, and conducts dynamic load tests on the top of the new material rock. The guide screw rotates and drives the threaded static pressure device to slide inward synchronously, contacting the new material rock for testing. The staggered dynamic and static load tests are used to test and inspect the new material rock, improving data accuracy and testing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the dynamic pressure applicator and the static pressure applicator of the present invention; Figure 3 This is a schematic diagram of the structure of the testing machine body of the present invention viewed from below; Figure 4 This is a three-dimensional structural schematic diagram of the positioning fork of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the initial state of the dust removal plate of the present invention; Figure 7 This is a schematic diagram of the positioning fork installation structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the structure of the flip-up plate and the dust removal plate of the present invention when they rotate; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C.

[0022] In the diagram: 1. Testing machine body; 2. Testing platform; 3. Dynamic pressure applicator; 4. Static pressure applicator; 5. Dynamic slide bar; 6. Dynamic slide plate; 7. Static base plate; 8. Guide screw; 9. Positioning fork; 10. Positioning screw; 11. Positioning support rod; 12. Drive shaft; 13. Drive gear; 14. Incomplete rack; 15. Transmission bracket; 16. Tilting plate; 17. Dust removal plate; 18. Incomplete bevel gear; 19. Transmission bevel gear; 20. Pressure supply sleeve; 21. Sealing plug rod; 22. One-way air inlet valve; 23. One-way exhaust pipe. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-10 The present invention provides the following technical solution: Example 1: To address the problems existing in the dynamic and static load testing of new material rocks, this example discloses the following technical solution: a multi-axis rock dynamic and static load testing machine, comprising a testing machine body 1 and a testing platform 2 fixedly installed in the middle of the testing machine body 1; positioning mechanisms are provided on the left and right sides of the testing machine body 1, and the positioning mechanisms include positioning fork rods 9 slidably installed on the left and right sides of the testing machine body 1, and the bottom end of the positioning fork rods 9 is threadedly connected to a positioning screw rod 10, while the positioning screw rod 10 is rotatably installed on the left and right sides inside the testing machine body 1; the positioning mechanism includes positioning support rods 11, and the positioning support rods 11 are lockably installed on the inner end of the positioning fork rods 9 by bolts, and the symmetrically arranged positioning support rods 11 extend to the left and right sides of the testing platform 2 for matching and positioning of fiber new material rocks of different specifications.

[0025] like Figures 6-7 As shown, when conducting dynamic and static load tests on the new material rock, the new material rock is placed on the test platform 2 inside the test machine body 1. The dual-axis motor inside the test machine body 1 drives the positioning screws 10 on the left and right sides to rotate. The positioning fork 9, which is threaded to the positioning screws 10, is limited by the test machine body 1, so that the rotating positioning screws 10 drive the positioning fork 9 to slide inward synchronously. At the same time, the positioning support rod 11 with the inner end adjustable distance is attached to the outer walls of the left and right sides of the new material rock. The left and right limited new material rock does not affect the dynamic and static load tests above and on the front and back sides, and avoids displacement and misalignment during the dynamic and static load tests.

[0026] Example 2: To address the problems existing in dynamic and static load tests on new material rocks, this example discloses the following technical solution: The testing machine body 1 includes a dust removal mechanism, which includes a drive shaft 12 with a torsion spring installed inside the dynamic slide bar 5. A drive gear 13 is fixedly installed on the lower outer wall of the drive shaft 12, and an incomplete rack 14 is meshed with the front of the drive gear 13. The incomplete rack 14 is fixedly installed on the inner side of the top surface of the positioning fork 9. The dust removal mechanism includes a transmission bracket 15, and the lower end of the transmission bracket 15 is fixedly installed on the outer end of the drive shaft 12. The upper end of 15 is elastically rotatably connected to the outer end of the flipping plate 16 via a rotating shaft, and the other end of the flipping plate 16 is rotatably connected to the dust removal plate 17 via a torsion spring. The dust removal nozzles connected through the interior of the dust removal plate 17 clean the surface of the fiber new material rock. The dust removal mechanism includes an incomplete bevel tooth 18, which is fixedly installed on the outer wall of the dynamic slide bar 5 at the upper end of the drive shaft 12. The inner side of the incomplete bevel tooth 18 is meshed with a transmission bevel tooth 19, which is fixedly installed at the connection between the transmission bracket 15 and the flipping plate 16 to drive the flipping plate 16 and the dust removal plate 17 to rotate.

[0027] like Figures 7-8 As shown, when the positioning forks 9 on the left and right sides of the top surface of the testing machine body 1 move inward synchronously, they cause the incomplete rack 14 fixedly connected above to mesh with the drive gear 13 below the drive shaft 12. This, in turn, causes the drive gear 13 and the drive shaft 12 to rotate synchronously. The drive shaft 12 then drives the transmission bracket 15, the tilting plate 16, and the dust removal plate 17 fixedly connected externally. The transmission bracket 15 rotates while the transmission bevel gear 19 and the incomplete bevel gear 18, which are connected to the flipping plate 16, mesh with each other, thereby driving the flipping plate 16 and the dust removal plate 17 to rotate, so as to cover and clean the test surface of the new material rock on the top surface of the test platform 2.

[0028] The testing machine body 1 includes a pressure supply mechanism, which includes a pressure supply sleeve 20 fixedly installed at the lower end of the positioning fork 9. A sealing plug 21 is slidably installed inside the pressure supply sleeve 20, and the inner end of the sealing plug 21 is fixedly connected to the inside of the testing machine body 1. A one-way air inlet valve 22 is provided through the inside and outside of the pressure supply sleeve 20. The pressure supply mechanism includes a one-way exhaust pipe 23 that is connected through the inside and outside of the pressure supply sleeve 20. The one-way exhaust pipe 23 is made of stainless steel corrugated braided hose to avoid pressure affecting airflow during rotation. The inner end of the one-way exhaust pipe 23 is connected through the dust removal nozzle inside the dust removal plate 17. Thus, during positioning, the dust removal plate 17 and the dust removal nozzle rotate to clean multiple surfaces of the fiber new material rock, improving the accuracy of dynamic and static load test data.

[0029] like Figure 4 , Figures 9-10 As shown, after the symmetrically distributed positioning fork 9 slides inward, it drives the pressure supply sleeve 20 fixedly connected to the outer end to move synchronously, and reduces the distance between its interior and the sealing plug 21, thereby squeezing the internal space of the pressure supply sleeve 20, and delivering air through the through-connected one-way exhaust pipe 23 (the one-way exhaust pipe 23 is made of stainless steel corrugated braided hose, and after rotating with the transmission bracket 15, it is wound around the outer wall of the drive shaft 12 at most one turn. Its outer metal braided layer can avoid pressure during winding, so as not to affect the delivery of gas inside the one-way exhaust pipe 23), and deliver it to the dust removal nozzle inside the through-connected dust removal plate 17. The rotating dust removal plate 17 cleans the rock particles and other dust on the surface of the new material rock, thereby avoiding affecting the subsequent dynamic and static load test data.

[0030] Furthermore, after conducting dynamic and static load tests on the new material rock, the positioning support rods 11 and positioning fork rods 9, which are positioned on the outer wall of the new material rock on both the left and right sides, move outward synchronously through the counter-rotation of the positioning screw 10. At the same time, the pressure supply sleeve 20, which is fixedly installed at the lower end of the positioning fork rod 9, gradually moves away from the sealing plug rod 21. As the space between the outer end of the sealing plug rod 21 and the internal space of the pressure supply sleeve 20 increases, the air pressure decreases. The one-way air intake valve 22 installed below the pressure supply sleeve 20 is in a one-way air intake open state, thereby drawing in external air into the pressure supply sleeve 20 for storage, so that it can be transported through the one-way exhaust pipe 23 for dust removal during subsequent cleaning operations.

[0031] At the same time, the positioning fork 9, which moves in the opposite direction, drives the incomplete rack 14 to mesh with the drive gear 13 in the opposite direction, causing the fixedly connected drive shaft 12 and transmission bracket 15 to rotate in the opposite direction. During the inspection operation, the one-way exhaust pipe 23, which is wrapped around the outer wall of the drive shaft 12, rotates synchronously in the opposite direction, thereby completing the expansion and avoiding excessive bending and wrapping of the one-way exhaust pipe 23, which would affect the dust removal effect.

[0032] Example 3: To address the problems existing in the dynamic and static load tests of existing new material rocks, this example discloses the following technical solution: A dynamic load assembly is provided above the main body 1 of the testing machine, and the dynamic load assembly includes a dynamic pressure applicator 3; wherein, the dynamic pressure applicator 3 performs dynamic load tests on the fiber new material rock on the surface of the testing platform 2 through adjustable speed impact and vibration; the dynamic load assembly includes dynamic slide bars 5 fixedly installed on the left and right sides inside the main body 1 of the testing machine, and a dynamic slide plate 6 is slidably provided through the outside of the dynamic slide bar 5, and the dynamic slide plate 6 is installed at the top of the dynamic pressure applicator 3 to prevent the dynamic pressure applicator 3 from deviating by sliding downward through the dynamic slide bar 5.

[0033] like Figures 1-2 As shown, after the new material rock is cleaned and dusted, the dynamic pressure device 3 installed inside the upper part of the testing machine body 1 is connected to the hydraulic cylinder. After adjusting the speed of dynamic movement, the dynamic slide plate 6 and the dynamic pressure device 3 are lowered through the dynamic slide bar 5 so as to carry out a dynamic load test on the top of the new material rock.

[0034] Static load components are provided on the front and rear sides of the testing machine body 1, and the static load components include static pressure devices 4. The static pressure devices 4 perform static load tests on the fiber new material rock on the surface of the testing platform 2 by moving in opposite directions at a uniform speed. The static load components include static base plates 7 fixedly installed on the front and rear sides of the testing machine body 1, and the bottom of the static base plate 7 is provided with a guide screw 8 through a bearing. The guide screw 8 is threaded to the bottom end of the static pressure device 4, and the middle part of the static pressure device 4 slides through the static base plate 7 to apply stable pressure to the fiber new material rock from the front and rear direction.

[0035] like Figures 3-4 As shown, the guide screw 8 inside the test machine body 1 is driven to rotate by a servo motor. The static pressure device 4, which is threadedly connected to the guide screw 8, is limited by the static base plate 7, so that the static pressure devices 4 threadedly connected on the front and rear sides slide inward synchronously, and then come into contact with the new material rock to carry out the test. The dynamic and static load test with staggered distribution is used to test and detect the new material rock, thereby improving the accuracy of data and the efficiency of the test.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multiaxial rock dynamic and static load testing machine, comprising a testing machine body (1) and a testing platform (2) fixedly installed in the middle of the testing machine body (1); Its features are, Also includes: A dynamic load assembly is provided above the main body (1) of the testing machine, and the dynamic load assembly includes a dynamic pressure applicator (3). Among them, the dynamic pressure device (3) conducts dynamic load tests on the fiber new material rock on the surface of the test platform (2) through adjustable speed impact and vibration; The front and rear sides of the test machine body (1) are provided with static load components, and the static load components include static pressure applicators (4). Among them, the static pressure device (4) performs a static load test on the fiber new material rock on the surface of the test platform (2) by moving in opposite directions at a uniform speed.

2. The multiaxial rock dynamic and static load testing machine according to claim 1, characterized in that: The dynamic load assembly includes dynamic slide bars (5) fixedly installed on the left and right sides inside the test machine body (1), and a dynamic slide plate (6) is provided through the outside of the dynamic slide bar (5). The dynamic slide plate (6) is installed on the top of the dynamic pressure device (3) to slide the dynamic pressure device (3) downward through the dynamic slide bar (5) to avoid displacement.

3. The multiaxial rock dynamic and static load testing machine according to claim 1, characterized in that: The static load assembly includes a static base plate (7) fixedly installed on the front and rear sides of the test machine body (1), and a guide screw (8) is rotatably provided at the bottom of the static base plate (7) through a bearing. The guide screw (8) is threadedly connected to the bottom end of the static pressure device (4), and the middle part of the static pressure device (4) slides through the static base plate (7) to apply stable pressure to the fiber new material rock from the front and rear directions.

4. The multiaxial rock dynamic and static load testing machine according to claim 1, characterized in that: The testing machine body (1) is provided with positioning mechanisms on the left and right sides, and the positioning mechanisms include positioning fork rods (9) that are slidably installed on the left and right sides of the testing machine body (1). The bottom end of the positioning fork rods (9) is threadedly connected to a positioning screw rod (10), and the positioning screw rod (10) is rotatably installed on the left and right sides inside the testing machine body (1).

5. A multiaxial rock dynamic and static load testing machine according to claim 4, characterized in that: The positioning mechanism includes a positioning support rod (11), which is bolt-locked to the inner end of the positioning fork rod (9). The symmetrically arranged positioning support rods (11) extend to the left and right sides of the test platform (2) for matching and positioning of fiber new material rocks of different specifications.

6. A multiaxial rock dynamic and static load testing machine according to claim 5, characterized in that: The main body (1) of the testing machine includes a dust removal mechanism, and the dust removal mechanism includes a drive shaft (12) with a torsion spring installed inside the dynamic slide bar (5). A drive gear (13) is fixedly installed on the lower outer wall of the drive shaft (12), and an incomplete rack (14) is meshed in front of the drive gear (13). At the same time, the incomplete rack (14) is fixedly installed on the inner side of the top surface of the positioning fork (9).

7. A multiaxial rock dynamic and static load testing machine according to claim 6, characterized in that: The dust removal mechanism includes a transmission bracket (15), and the lower end of the transmission bracket (15) is fixedly installed on the outer end of the drive shaft (12). The upper end of the transmission bracket (15) is elastically rotatably connected to the outer end of the flip plate (16) through the shaft. The other end of the flip plate (16) is rotatably connected to the dust removal plate (17) through a torsion spring. The dust removal nozzles connected through the inside of the dust removal plate (17) clean the surface of the fiber new material rock.

8. A multiaxial rock dynamic and static load testing machine according to claim 7, characterized in that: The dust removal mechanism includes an incomplete bevel tooth (18), and the incomplete bevel tooth (18) is fixedly installed on the outer wall of the dynamic slide bar (5) at the upper end of the drive shaft (12). The inner side of the incomplete bevel tooth (18) is meshed with a transmission bevel tooth (19), and the transmission bevel tooth (19) is fixedly installed at the connection between the transmission bracket (15) and the flip plate (16) to drive the flip plate (16) and the dust removal plate (17) to rotate.

9. A multiaxial rock dynamic and static load testing machine according to claim 1, characterized in that: The testing machine body (1) includes a pressure supply mechanism, and the pressure supply mechanism includes a pressure supply sleeve (20) fixedly installed at the lower end of the positioning fork (9). A sealing plug rod (21) is slidably installed inside the pressure supply sleeve (20), and the inner end of the sealing plug rod (21) is fixedly connected to the inside of the testing machine body (1). Meanwhile, a one-way air inlet valve (22) is provided through the inside and outside of the pressure supply sleeve (20).

10. A multiaxial rock dynamic and static load testing machine according to claim 9, characterized in that: The pressure supply mechanism includes a one-way exhaust pipe (23) that runs through the inside and outside of the pressure supply sleeve (20). The one-way exhaust pipe (23) is made of stainless steel corrugated braided hose to avoid pressure affecting airflow during rotation. The inner end of the one-way exhaust pipe (23) is connected through the dust removal nozzle inside the dust removal plate (17). Thus, during positioning, the dust removal plate (17) and the dust removal nozzle rotate to clean multiple surfaces of the fiber new material rock, improving the accuracy of dynamic and static load test data.

Images