Particle triaxial flexible loading testing machine

Abstract

The invention relates to the technical field of particle loading, and discloses a triaxial flexible particle loading testing machine which comprises a rack, two energy storage synchronous release mechanisms, a pushing mechanism, a particle loading mechanism and a controller, the two energy storage synchronous release mechanisms, the pushing mechanism and the particle loading mechanism are all mounted on the rack, and the controller is mounted on the rack. The two energy storage synchronous release mechanisms are connected with the front end and the rear end of the particle loading mechanism respectively, the pushing mechanism clamps the left end and the right end of the particle loading mechanism, and the energy storage synchronous release mechanisms and the pushing mechanism are both connected with the controller. According to the invention, the whole loading area can be divided into a plurality of loading units, and each loading unit is provided with a spring energy storage pressing block to apply the same flexible force; the whole loading plane is a flexible loading plane, and particle deformation is not caused, so that the problem of uneven stress in the loading process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of particle loading, in particular to a particle triaxial flexible loading testing machine. Background Art

[0002] The testing machines in the prior art all use a plate to load the particle samples, which will lead to the problem of uneven force on the particles in each area after deformation. Because if the deformation amount of each particle is inconsistent, the force on the particles with more deformation and less deformation will be different. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above prior art and provide a particle triaxial flexible loading testing machine.

[0004] The object of the present invention is achieved through the following technical scheme: a particle triaxial flexible loading testing machine comprises a frame, two energy storage synchronous release mechanisms, a pushing mechanism, a particle loading mechanism and a controller, the two energy storage synchronous release mechanisms, the pushing mechanism and the particle loading mechanism are all installed on the frame, the two energy storage synchronous release mechanisms are respectively connected to the front and rear ends of the particle loading mechanism, the pushing mechanism clamps the left and right ends of the particle loading mechanism, and the energy storage synchronous release mechanism and the pushing mechanism are both connected to the controller.

[0005] A better choice is that the energy storage and synchronous release mechanism includes a force storage structure and a release structure, one end of the release structure is connected to the particle loading mechanism, and the other end of the release structure is connected to the force storage structure, the force storage structure is installed on the frame, and the force storage structure and the release structure are both connected to a controller.

[0006] A better choice is that the force storage structure includes a first direct-connected electric cylinder, a first sensor, a first push rod, a first guide shaft and a second push rod, the first direct-connected electric cylinder is installed on the frame, the first direct-connected electric cylinder is connected to the first push rod through the first sensor, the two ends of the first push rod are respectively connected to the two ends of the second push rod through the first guide shaft, the two ends of the release structure are slidably connected to the two first guide shafts, and the first direct-connected electric cylinder and the first sensor are both connected to a controller.

[0007] A better choice, the release structure includes a bushing, a servo motor, a motor base, a lifting beam, two second guide shafts, a screw, a slide rail mounting plate, a first clamping plate, a second clamping plate and a synchronous gear, the servo motor is installed on the motor base, the two ends of the motor base are installed on the top of the slide rail mounting plate through the two second guide shafts, the two ends of the lifting beam are respectively slidably connected with the two second guide shafts, the servo motor is threadedly connected to the lifting beam through a screw, the lifting beam is connected to the top of the first clamping plate, the first clamping plate and the second clamping plate are both slidably connected to the slide rail mounting plate, the first clamping plate is provided with a first rack at both ends, the second clamping plate is provided with a second rack at both ends, the first rack is meshed with the second rack through a synchronous gear, the two ends of the slide rail mounting plate are respectively slidably connected with the force storage structure through the bushing, and the servo motor is connected to the controller.

[0008] A better choice is that the particle loading mechanism includes a first glass plate, a second glass plate, a first loading plate, a second loading plate and two columns of flexible force applying components, the first glass plate and the second glass plate are both installed on the frame, the first glass plate and the second glass plate are arranged in parallel, the first loading plate and the second loading plate are both located between the first glass plate and the second glass plate, the first loading plate and the second loading plate are arranged opposite to each other, the first loading plate and the second loading plate correspond to the pushing mechanism, the two columns of flexible force applying components are arranged opposite to each other, the two columns of flexible force applying components correspond to the two energy storage and synchronous release mechanisms respectively, the first glass plate, the second glass plate, the first loading plate, the second loading plate and the two columns of flexible force applying components surround a loading area.

[0009] A better choice is that the soft force applying component includes a pressure block, a screw, a sleeve, a conical stopper and a spring, the pressure block is connected to the conical stopper through the screw, the spring and the sleeve are both sleeved on the screw, one end of the sleeve and the conical stopper are matched with the energy storage synchronous release mechanism, the other end of the sleeve abuts against the first end of the spring, and the other end of the spring abuts against the pressure block, the pressure blocks are linearly arranged to form two rows of pressure blocks, and the two rows of pressure blocks are relatively set.

[0010] A better choice is that the pushing mechanism includes an active pushing structure and a particle loading fixed plate, the particle loading fixed plate and the active pushing structure are both installed on the frame, the particle loading fixed plate abuts against one end of the particle loading mechanism, the active pushing structure abuts against the other end of the particle loading mechanism, and the active pushing structure is connected to the controller.

[0011] A better choice is that the active pushing structure includes a second direct-connected electric cylinder, a slider, a guide rail, a second sensor and a third push rod, the second direct-connected electric cylinder is connected to the slider, the slider is slidably connected to the guide rail, the guide rail is installed on the frame, the second direct-connected electric cylinder is connected to the third push rod through the second sensor, the third push rod corresponds to the particle loading mechanism, and the second direct-connected electric cylinder and the second sensor are both connected to the controller.

[0012] A more preferred option also includes a mirror mechanism, wherein the mirror mechanism is installed on the frame, and the mirror mechanism corresponds to the particle loading mechanism.

[0013] A better option also includes a mirror mechanism, which includes a first mirror structure and a second mirror structure, wherein the first mirror structure is installed at the bottom of the frame, and the first mirror structure corresponds to the bottom of the particle loading mechanism, and the second mirror structure is installed at the top of the frame, and the second mirror structure corresponds to the top of the particle loading mechanism.

[0014] The present invention has the following advantages and beneficial effects compared with the prior art:

[0015] The present invention can divide the entire loading area into a plurality of loading units through a frame, a mirror mechanism, an energy storage synchronous release mechanism, a pushing mechanism and a particle loading mechanism. Each loading unit has a pressure block under the action of spring energy storage to exert the same flexible force; the entire loading plane becomes a flexible loading plane, which will not cause particle deformation, thereby solving the problem of uneven force during the loading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a particle triaxial flexible loading tester of the present invention;

[0017] Figure 2 Schematic diagram of the first mirror structure of the particle triaxial flexible loading tester of the present invention;

[0018] Figure 3 Schematic diagram of the second mirror structure of the particle triaxial flexible loading tester of the present invention;

[0019] Figure 4 It is a schematic diagram of the energy storage and synchronous release mechanism of the particle triaxial flexible loading tester of the present invention;

[0020] Figure 5 It is a schematic diagram of the release structure of the particle triaxial flexible loading tester of the present invention;

[0021] Figure 6 It is a schematic diagram of the release structure of the particle triaxial flexible loading tester of the present invention;

[0022] Figure 7It is a schematic diagram of the pushing mechanism of the particle triaxial flexible loading tester of the present invention;

[0023] Figure 8 It is a schematic diagram of a particle loading mechanism of the particle triaxial flexible loading testing machine of the present invention;

[0024] Fig. 9 It is a top view of the internal structure of the particle loading mechanism of the particle triaxial flexible loading tester of the present invention;

[0025] The markings of the components in the attached drawings are as follows: 1-frame; 2-mirror mechanism; 21-first mirror structure; 211-first mirror frame; 212-first turntable; 213-first lens; 22-second mirror structure; 221-second mirror frame; 222-second turntable; 223-second lens; 3-energy storage synchronous release mechanism; 31-power storage structure; 311-first direct-connected electric cylinder; 312-first sensor; 313-first push rod; 314-first guide shaft; 315-second push rod; 32-release structure; 320-sleeve; 321-servo motor; 322-motor base; 323-lifting beam; 324-second guide shaft; 325-first screw rod; 326-slide rail mounting plate; 326 1-strip hole; 327-first clamping plate; 3271-first rack; 3272-first limiting groove; 328-second clamping plate; 3281-second rack; 3282-second limiting groove; 329-synchronous gear; 4-pushing mechanism; 41-active pushing structure; 411-second direct-connected electric cylinder; 412-slider; 413-guide rail; 414-second sensor; 415-third push rod; 42-particle loading fixed plate; 5-particle loading mechanism; 501-first glass plate; 502-first loading plate; 503-second loading plate; 504-pressing block; 505-second screw; 506-sleeve; 507-conical stopper; 508-spring; 509-second glass plate. DETAILED DESCRIPTION

[0026] The purpose of the present invention is further described in detail below with reference to the accompanying drawings and specific examples. The examples cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following examples.

[0027] like Figure 1As shown, the particle triaxial flexible loading tester includes a frame 1, two energy storage synchronous release mechanisms 3, a pushing mechanism 4, a particle loading mechanism 5, a mirror mechanism 2 and a controller; the mirror mechanism 2 includes a first mirror structure 21 and a second mirror structure 22. A through hole is provided at the top center of the frame 1, and the particle loading mechanism 5 is installed above the through hole. The second mirror structure 22 is installed just above the particle loading mechanism 5 and is aligned with the loading area of ​​the particle loading mechanism 5. The first mirror structure 21 is installed just below the particle loading mechanism 5, and the first mirror structure 21 passes through the through hole and is aligned with the loading area of ​​the particle loading mechanism 5. The two energy storage synchronous release mechanisms 3 are respectively installed on the front and rear sides of the frame 1, and the two energy storage synchronous release mechanisms 3 correspond to the front and rear ends of the particle loading mechanism 5 respectively. The pushing mechanism 4 is installed on the left and right sides of the frame 1, and the pushing mechanism 4 clamps the left and right ends of the particle loading mechanism 5. The two energy storage synchronous release mechanisms 3 and the pushing mechanism 4 are both connected to the controller.

[0028] The frame 1 plays a supporting role. The energy storage synchronous release mechanism 3 is used to store energy in the spring 508 of the particle loading mechanism 5 and release it. The pushing mechanism 4 is used to clamp and fix the particle loading mechanism 5. The particle loading mechanism 5 is used to load particles using a flexible force. The mirror mechanism 2 is convenient for the operator to observe the deformation of the particles at two angles, upper and lower. The first mirror structure 21 is used to observe the state of the particles in the loading area from directly below the particle loading mechanism 5. The second mirror structure 22 is used to observe the state of the particles in the loading area from directly above the particle loading mechanism 5. The controller is a computer, which is used to control the pushing mechanism 4 and the energy storage synchronous release mechanism 3.

[0029] like Figure 2 As shown, the first mirror structure 21 includes a first mirror frame 211, a first turntable 212 and a first lens 213. The first mirror frame 211 is fixedly connected to the bottom of the frame 1. The first mirror frame 211 is rotatably mounted on the first mirror frame 211 through the first turntable 212. The first lens 213 passes through the through hole to align with the loading area of ​​the particle loading mechanism 5.

[0030] like Figure 3 As shown, the second mirror structure 22 includes a second mirror frame 221, a second rotating disk 222, and a second lens 223. The second mirror frame 221 is mounted on the top of the frame 1, directly above the through hole (and also directly above the loading area of ​​the particle loading mechanism 5). The second lens 223 is rotatably mounted on the second mirror frame 221 through the second rotating disk 222. The second lens 223 is aligned directly above the loading area of ​​the particle loading structure.

[0031] The first lens frame 211 is used to support the first lens 213, and the second lens frame 221 is used to support the second lens 223. The first turntable 212 is used to allow the first lens 213 to rotate; the second turntable 222 is used to allow the second lens 223 to rotate. The first lens 213 and the second lens 223 are both convex lenses, which magnify the particles to facilitate operators to observe the state of the particles.

[0032] like Figure 4 As shown, each energy storage synchronous release mechanism 3 includes a force storage structure 31 and a release structure 32. The force storage structure 31 is respectively installed at the front and rear ends of the frame 1. The release structure 32 is slidably connected to the force storage structure 31. The force storage structure 31 can pull the release structure 32 to achieve forward and backward movement. The release structure 32 can clamp or release the conical stopper 507 of the particle loading mechanism 5. The force storage structure 31 and the release structure 32 are both controlled by a controller. The force storage structure 31 is used to drive the release structure 32 to move from the inside to the outside. The release structure 32 is used to release or clamp the conical stopper 507 of the particle loading mechanism 5.

[0033] like Figure 4 As shown, each force storage structure 31 includes a first direct electric cylinder 311, a first sensor 312, a first push rod 313, two first guide shafts 314 and a second push rod 315. The first direct electric cylinder 311 is installed at the front end or the rear end of the frame 1. The rod head of the first direct electric cylinder 311 is connected to the middle part of the first push rod 313 through the first sensor 312. The two ends of the first push rod 313 are respectively connected to the two ends of the second push rod 315 through the two first guide shafts 314. The two sleeves 320 of the release structure 32 are respectively slidably connected to the two first guide shafts 314. The first direct electric cylinder 311 and the first sensor 312 are both controlled by the controller.

[0034] The first direct electric cylinder 311 is used to provide power for the outward movement of the release structure 32. The first sensor 312 is a tension sensor, which is used to detect the tension applied to the release structure 32. The first push rod 313 is used to pull the second push rod 315. The first guide shaft 314 is used to guide the movement direction of the release structure 32. The second push rod 315 is used to limit the release structure 32.

[0035] like Figure 5 and 6As shown, each release structure 32 includes two sleeves 320, a servo motor 321, a motor base 322, a lifting beam 323, two second guide shafts 324, a first screw rod 325, a slide rail mounting plate 326, a first clamping plate 327, a second clamping plate 328 and two synchronous gears 329. The servo motor 321 is mounted on the top of the motor base 322, and the two ends of the motor base 322 are mounted on the top of the slide rail mounting plate 326 through the two second guide shafts 324. The two ends of the lifting beam 323 are slidably connected to the two second guide shafts 324 respectively. The rotating shaft of the servo motor 321 is connected to the upper end of the first screw rod 325, and the other end of the first screw rod 325 is threadedly connected to the lifting beam 323. The side of the lifting beam 323 is connected to the top of the first clamping plate 327. The two ends of the first clamping plate 327 are slidably mounted on the rear side of the slide rail mounting plate 326. A first rack 3271 is provided at each end of the first clamping plate 327, and a plurality of first limiting grooves 3272 are provided at the middle of the bottom of the first clamping plate 327. The second clamping plate 328 is slidably mounted on the rear side of the slide rail mounting plate 326. A second rack 3281 is provided at each end of the second clamping plate 328, and a plurality of second limiting grooves 3282 are provided at the middle of the top of the second clamping plate 328. The plurality of first limiting grooves 3272 and the plurality of second limiting grooves 3282 correspond to each other one by one, and the plurality of first limiting grooves 3272 and the plurality of second limiting grooves 3282 are used to limit the conical stopper 507. Two synchronous gears 329 are rotatably mounted on the side of the slide rail mounting plate 326, and are located between the first rack 3271 and the second rack 3281. The first rack 3271 is meshed with the second rack 3281 through the synchronous gear 329. Two shaft sleeves 320 are mounted at each end of the slide rail mounting plate 326. The two first guide shafts 314 of the power storage structure 31 are respectively slidably connected to the two shaft sleeves 320. The servo motor 321 is controlled by a controller.

[0036] The sleeve 320 is used to reduce the friction between the first guide shaft 314 and the slide rail mounting plate 326. The servo motor 321 provides power for the up and down sliding of the first card plate 327. The motor base 322 is used to install the servo motor 321. The lifting beam 323 plays a transmission role and cooperates with the first screw rod 325 to realize the up and down movement of the first card plate 327. The second guide shaft 324 provides guidance for the up and down movement of the lifting beam 323. The first screw rod 325 is used to drive the lifting beam 323 to move up and down. The slide rail mounting plate 326 is used to install the second guide shaft 324, the synchronous gear 329 and the second card plate 328. The cooperation between the first card plate 327 and the second card plate 328 realizes the locking and release of multiple conical stop heads 507. The synchronous gear 329 realizes the synchronous opening and closing of the first card plate 327 and the second card plate 328.

[0037] like Figure 1 and 7As shown, the pushing mechanism 4 includes an active pushing structure 41 and two particle loading fixed plates 42, and the active pushing structure 41 includes a second direct-connected electric cylinder 411, four sliders 412, two guide rails 413, a second sensor 414 and a third push rod 415. The two particle loading fixed plates 42 are docked and installed at the left end of the frame 1, and the active pushing structure 41 is installed at the right end of the frame 1. The two particle loading fixed plates 42 are spliced ​​into a gear rod, the left end of the gear rod abuts against the inner side of the top of the frame 1, the right end of the gear rod abuts against the left end of the particle loading mechanism 5, and the active pushing structure 41 abuts against the right end of the particle loading mechanism 5. The active pushing structure 41 is connected to the controller. The two particle loading fixed plates 42 are spliced ​​into a gear rod. Four sliders 412 are installed at the left end of the second direct-connected electric cylinder 411, and the four sliders 412 are slidably connected to the two guide rails 413 respectively. The two guide rails 413 are both installed at the top right end of the frame 1, and the two guide rails 413 are parallel to each other. The second direct-connected electric cylinder 411 is controlled by the controller. The rod head of the second direct-connected electric cylinder 411 is connected to the right end of the second sensor 414, the left end of the second sensor 414 is connected to the right end of the third push rod 415, and the left end of the third push rod 415 corresponds to the right end of the first loading plate 502. The second sensor 414 is connected to the controller.

[0038] The active pushing structure 41 is used to actively press the right end of the particle loading mechanism 5. The particle loading fixed plate 42 is used to support the left end of the particle loading mechanism 5. The second direct-connected electric cylinder 411 provides power for the third push rod 415 to push the first loading plate 502 of the particle recording mechanism. The slider 412 and the guide rail 413 can adjust the position of the third push rod 415. The second sensor 414 is a pressure sensor, which is used to determine whether the particle loading mechanism 5 is pressed. The third push rod 415 is used to push the first loading plate 502 of the particle loading mechanism 5.

[0039] like Figure 8 and 9As shown, the particle loading mechanism 5 includes a first glass plate 501, a second glass plate 509, a first loading plate 502, a second loading plate 503 and a plurality of flexible force applying components, each of which includes a pressing block 504, a second screw 505, a sleeve 506, a conical stopper 507 and a spring 508. A through hole is provided at the top center of the frame 1, and the first glass plate 501 is installed at the top center of the frame 1 by bolts, that is, above the through hole. The second glass plate 509 is installed directly above the first glass plate 501, and there is a gap between the first glass plate 501 and the second glass plate 509. The first loading plate 502 is located at the right end of the gap, and the second loading plate 503 is located at the left end of the gap. Multiple pressing blocks 504 are arranged linearly to form two columns of pressing blocks 504, one column of pressing blocks 504 is located at the front end of the gap, and the other column of pressing blocks 504 is located at the rear end of the gap. The plurality of pressing blocks 504 are respectively connected to one end of the plurality of second screw rods 505, and the other ends of the plurality of second screw rods 505 pass through the strip holes 3261 of the slide rail mounting plate 326 to connect with the plurality of conical stoppers 507; when released, the conical stoppers 507 can also pass through the strip holes 3261. The plurality of sleeves 506 and the plurality of springs 508 are respectively sleeved on the plurality of second screw rods 505. One end of the plurality of springs 508 abuts against the plurality of pressing blocks 504, and the other ends of the plurality of springs 508 abut against one end of the plurality of sleeves 506, and the other ends of the plurality of sleeves 506 abut against the second push rod 315 of the energy storage synchronous release mechanism 3. The first glass plate 501 and the second glass plate 509 are arranged in parallel up and down, the first loading plate 502 and the second loading plate 503 are arranged opposite to each other left and right, and the two rows of pressing blocks 504 are arranged opposite to each other front and back. The first glass plate 501 , the second glass plate 509 , the first loading plate 502 , the second loading plate 503 and the two rows of pressing blocks 504 form a loading area.

[0040] The first glass plate 501 is used to carry particles and facilitate the operator to observe the changes of particles. The second glass plate 509 is used to limit the particles from leaving the loading area, and is also convenient for the operator to observe the changes of particles. The first loading plate 502 and the second loading plate 503 are used to limit the particles from leaving the loading area and to limit the left and right positions of the loading area. The pressing block 504 is used to apply a flexible force to the particles. The screw 325 plays a transmission role. The sleeve 506 is used to push the spring 508 to compress the spring 508. The conical stopper 507 is used to pull the screw 325 to play a limiting role. The spring 508 provides kinetic energy for the push of the pressing block 504.

[0041] The working process of the particle triaxial flexible loading tester is described as follows: first, the particle loading mechanism 5 is locked on the frame 1 through the pushing mechanism 4 so that it cannot move left and right, and at the same time, the controller collects the thrust of the second sensor 414. Under the action of the servo motor 321 and the synchronous gear 329 of the release structure 32, the first clamping plate 327 and the second clamping plate 328 move synchronously to realize the opening of the first clamping plate 327 and the second clamping plate 328, and then the controller controls the force storage structure 31 to move from outside to inside, and the conical stopper 507 of the particle loading mechanism 5 enters between the first clamping plate 327 and the second clamping plate 328, and the servo motor 321 of the release structure 32 closes the first clamping plate 327 and the second clamping plate 328, and the first clamping plate 327 and the second clamping plate 328 lock a plurality of conical stoppers 507. Under the action of the first direct-connected electric cylinder 311 of the power storage structure 31, the second push rod 315 pulls the release structure 32 to move from the inside of the frame 1 to the outside of the frame 1, completing the spring 508 power storage of the particle loading mechanism 5, and the controller collects the pulling force through the first sensor 312. When the pulling force value reaches the target value, the first card plate 327 moves upward under the action of the servo motor 321 of the release structure 32, and at the same time, under the synchronous action of the synchronous gear 329, the synchronous gear 329 drives the second card plate 328 to move downward at the same time. The conical stopper 507 of the particle loading mechanism 5 is no longer restricted by the first card plate 327 and the second card plate 328, and under the action of the spring 508, the conical stopper 507 moves from the outside of the frame to the inside of the frame. Under the transmission of the second screw 505, the two columns of pressing blocks 504 of the particle loading mechanism 5 simultaneously approach the middle of the loading area, and the two columns of pressing blocks 504 generate flexible thrust to push the particles. The operator can observe the state of the particle below through the first mirror structure 21 , and the operator can also observe the state of the particle above through the second mirror structure 22 .

[0042] The above specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. Particle triaxial flexible loading testing machine, characterized by: The invention comprises a frame, two energy storage synchronous release mechanisms, a pushing mechanism, a particle loading mechanism and a controller. The two energy storage synchronous release mechanisms, the pushing mechanism and the particle loading mechanism are all installed on the frame. The two energy storage synchronous release mechanisms are respectively connected to the front and rear ends of the particle loading mechanism. The pushing mechanism clamps the left and right ends of the particle loading mechanism. The energy storage synchronous release mechanism and the pushing mechanism are both connected to the controller.

2. The particle triaxial flexible loading testing machine according to claim 1, characterized in that: The energy storage and synchronous release mechanism includes a force storage structure and a release structure, one end of the release structure is connected to the particle loading mechanism, and the other end of the release structure is connected to the force storage structure, the force storage structure is installed on the frame, and the force storage structure and the release structure are both connected to a controller.

3. The particle triaxial flexible loading testing machine according to claim 2, characterized in that: The force storage structure includes a first direct-connected electric cylinder, a first sensor, a first push rod, a first guide shaft and a second push rod. The first direct-connected electric cylinder is installed on the frame. The first direct-connected electric cylinder is connected to the first push rod through the first sensor. The two ends of the first push rod are respectively connected to the two ends of the second push rod through the first guide shaft. The two ends of the release structure are slidably connected to the two first guide shafts. The first direct-connected electric cylinder and the first sensor are both connected to a controller.

4. The particle triaxial flexible loading testing machine according to claim 2, characterized in that: The release structure includes a bushing, a servo motor, a motor base, a lifting beam, two second guide shafts, a screw, a slide rail mounting plate, a first clamping plate, a second clamping plate and a synchronous gear. The servo motor is installed on the motor base, and the two ends of the motor base are installed on the top of the slide rail mounting plate through the two second guide shafts. The two ends of the lifting beam are respectively slidably connected with the two second guide shafts. The servo motor is threadedly connected to the lifting beam through a screw, and the lifting beam is connected to the top of the first clamping plate. The first clamping plate and the second clamping plate are both slidably connected to the slide rail mounting plate. The first clamping plate is provided with a first rack at both ends, and the second clamping plate is provided with a second rack at both ends. The first rack is meshed with the second rack through a synchronous gear. The two ends of the slide rail mounting plate are respectively slidably connected with the force storage structure through the bushing, and the servo motor is connected to the controller.

5. The particle triaxial flexible loading testing machine according to claim 1, characterized in that: The particle loading mechanism includes a first glass plate, a second glass plate, a first loading plate, a second loading plate and two columns of flexible force applying components, the first glass plate and the second glass plate are both installed on the frame, the first glass plate and the second glass plate are arranged in parallel, the first loading plate and the second loading plate are both located between the first glass plate and the second glass plate, the first loading plate and the second loading plate are arranged opposite to each other, the first loading plate and the second loading plate correspond to the pushing mechanism, the two columns of flexible force applying components are arranged opposite to each other, the two columns of flexible force applying components correspond to the two energy storage synchronous release mechanisms respectively, the first glass plate, the second glass plate, the first loading plate, the second loading plate and the two columns of flexible force applying components surround a loading area.

6. The particle triaxial flexible loading testing machine according to claim 5, characterized in that: The flexible force applying component includes a pressure block, a screw, a sleeve, a conical stopper and a spring, the pressure block is connected to the conical stopper via the screw, the spring and the sleeve are both sleeved on the screw, one end of the sleeve and the conical stopper are matched with the energy storage synchronous release mechanism, the other end of the sleeve abuts against the first end of the spring, the other end of the spring abuts against the pressure block, the pressure blocks are linearly arranged to form two rows of pressure blocks, and the two rows of pressure blocks are arranged opposite to each other.

7. The particle triaxial flexible loading testing machine according to claim 1, characterized in that: The pushing mechanism includes an active pushing structure and a particle loading fixed plate, both of which are installed on the frame, the particle loading fixed plate abuts against one end of the particle loading mechanism, the active pushing structure abuts against the other end of the particle loading mechanism, and the active pushing structure is connected to the controller.

8. The particle triaxial flexible loading testing machine according to claim 7, characterized in that: The active pushing structure includes a second direct-connected electric cylinder, a slider, a guide rail, a second sensor and a third push rod. The second direct-connected electric cylinder is connected to the slider, the slider is slidably connected to the guide rail, the guide rail is installed on the frame, the second direct-connected electric cylinder is connected to the third push rod through the second sensor, the third push rod corresponds to the particle loading mechanism, and the second direct-connected electric cylinder and the second sensor are both connected to the controller.

9. The particle triaxial flexible loading testing machine according to claim 1, characterized in that: It also includes a mirror mechanism, which is installed on the frame and corresponds to the particle loading mechanism.

10. The particle triaxial flexible loading testing machine according to claim 9, characterized in that: It also includes a mirror mechanism, which includes a first mirror structure and a second mirror structure. The first mirror structure is installed at the bottom of the frame, and the first mirror structure corresponds to the bottom of the particle loading mechanism. The second mirror structure is installed at the top of the frame, and the second mirror structure corresponds to the top of the particle loading mechanism.

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