A simulation device for slope instability initiation under strong earthquake action

Abstract

An embodiment of the present application provides a simulation device for slope instability initiation under strong earthquake action, which relates to the technical field of earthquake simulation equipment. A simulation device for slope instability initiation under strong earthquake action includes: a model storage mechanism, a four-corner vibration mechanism, the four-corner vibration mechanism is located at the lower end of the model storage mechanism, the four-corner vibration mechanism drives the four corners of the model storage mechanism to vibrate synchronously, a single-side vibration mechanism, the single-side vibration mechanism is located at the upper end of the four-corner vibration mechanism, so that the single-side vibration mechanism vibrates the front end or the rear end of the model storage mechanism, and a coupling amplitude adjustment mechanism. It can accurately simulate various modes such as synchronous lifting vibration of the four corners of the experimental model, single-front single-side vibration, and complex coupling vibration, and thus can accurately simulate various stress conditions that the slope may encounter in actual strong earthquakes, greatly improving the accuracy of the experiment.

Description

Technical Field

[0001] This application relates to the technical field of earthquake simulation equipment, and more particularly, to a simulation device for slope instability initiation under strong earthquake action. Background Art

[0002] Earthquakes are one of the main inducing factors of landslides. Under the action of an earthquake, the stability of slope soil or rock is damaged. When the shear stress exceeds the shear strength of the rock and soil mass, the rock and soil mass will slide along a certain sliding surface, forming a landslide, which seriously affects the surrounding ecological environment and the local economic development. Therefore, the use of a slope instability initiation simulation device can predict in advance the possibility and characteristics of slope instability under specific earthquake parameters, provide key data support for formulating a scientific and reasonable slope protection plan, thereby reducing the potential threats of geological disasters such as landslides to the ecology and economy, and contributing to the disaster prevention, mitigation and sustainable development work in related areas.

[0003] However, most of the existing slope instability initiation simulation devices can only provide simple unidirectional vibrations, such as only vertical vibrations or horizontal vibrations. However, in actual earthquake scenarios, seismic waves are complex and multi-directional, including vertical, horizontal, and coupled vibrations in different directions. This single vibration mode cannot truly reproduce the actual vibration conditions experienced by the slope during an earthquake, resulting in a large deviation between the experimental data and the stress and deformation states of the slope during an actual earthquake. At the same time, each vibration function module of the existing slope instability initiation simulation device is relatively independent, and the ability to work together is poor. This makes it difficult to achieve a rapid conversion between modules when switching vibration modes, thereby wasting the experimental preparation time and reducing the experimental efficiency.

[0004] In the case of an earthquake with a large vibration amplitude, there are generally smaller seismic waves crisscrossing and overlapping with each other. These smaller seismic waves interact with the seismic waves with a larger amplitude, changing the mechanical equilibrium state of the slope. However, when simulating an earthquake with a large vibration amplitude, most of the existing slope instability initiation simulation devices are difficult to simulate the smaller seismic wave components existing in the larger amplitude, resulting in the experiment being unable to comprehensively reproduce the complex stress conditions faced by the slope in a real earthquake scenario. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a simulation device for slope instability initiation under strong earthquake action. The simulation device for slope instability initiation under strong earthquake action can accurately simulate various modes such as synchronous lifting vibration at the four corners of the experimental model, single-front unilateral vibration, and complex coupled vibration, and can thus accurately simulate various force conditions that the slope may encounter in an actual strong earthquake. At the same time, when the unilateral vibration mechanism vibrates vertically, the vibration turntable of the coupled amplitude adjustment mechanism applies an upward lifting force to multiple positions of the placement plate, changing its force distribution. This not only creates a complex and realistic earthquake scenario but also, in the simulation of large-amplitude situations, superimposes small seismic waves, effectively improving the accuracy of the simulation experiment.

[0006] A simulation device for slope instability initiation under strong earthquake action according to an embodiment of the present application includes:

[0007] A model storage mechanism;

[0008] A four-corner vibration mechanism located at the lower end of the model storage mechanism, which drives the four corners of the model storage mechanism to vibrate synchronously;

[0009] A unilateral vibration mechanism located at the upper end of the four-corner vibration mechanism, which vibrates the front end or the rear end of the model storage mechanism;

[0010] A coupled amplitude adjustment mechanism located at the upper end of the unilateral vibration mechanism. During the up-and-down reciprocating movement of the four-corner vibration mechanism, it drives one end of the unilateral vibration mechanism to vibrate vertically and drives one side of the model storage mechanism to vibrate horizontally, so that the unilateral vibration mechanism and the coupled amplitude adjustment mechanism can simultaneously perform a coupled vibration operation on the model storage mechanism.

[0011] According to some embodiments of the present application, the model storage mechanism includes a bottom plate and an experimental model. Four corners of the upper surface of the bottom plate are fixedly connected with support legs, the upper ends of the support legs are fixedly connected with a connection frame, the middle part of the connection frame is fixedly connected with a connection plate, four corners of the upper surface of the connection plate are hinged with vibration springs, the upper ends of the vibration springs are hinged with a placement plate, and the experimental model is arranged on the upper surface of the placement plate.

[0012] According to some embodiments of the present application, a protective frame is fixedly connected to the edge of the upper surface of the connection frame.

[0013] According to some embodiments of the present application, the four-corner vibration mechanism includes a servo motor, the servo motor is fixedly connected to the middle of the upper surface of the bottom plate, the output end of the servo motor is fixedly connected with a unidirectional screw rod, a rectangular unidirectional slider is sleeved on the lower part of the unidirectional screw rod, support concave frames are fixedly connected to the outer walls of the front end and the rear end of the rectangular unidirectional slider, first toothed plates are fixedly connected to the ends of the support concave frames far away from the unidirectional screw rod, mounting frames are fixedly connected to the front end and the rear end of the upper surface of the bottom plate, first long rotating rods are rotatably connected to the lower ends of the inner walls of the mounting frames, first toothed cylinders are fixedly connected to the outer walls on both sides of the first long rotating rods, the first toothed plates are meshed with the first toothed cylinders, and first cams are respectively fixedly connected to both sides of the outer wall of the first long rotating rod;

[0014] A first fixing plate is fixedly connected to the inner wall of the mounting frame near the lower end, a first telescopic cover is fixedly connected to the body of the first fixing plate, a first sliding plate is slidably connected inside the first telescopic cover, a plurality of first reset short springs are fixedly connected to the edges of the inner top of the first telescopic cover, the lower ends of the first reset short springs are fixedly connected to the upper surface of the first sliding plate, a first circular reset block is fixedly connected to the middle of the lower surface of the first sliding plate, a second jacking rod is fixedly connected to the middle of the upper surface of the first sliding plate, the upper end of the second jacking rod extends to the upper part of the first telescopic cover and is fixedly connected with an intermediate frame, and a first jacking rod is fixedly connected to the middle of the upper end of the intermediate frame;

[0015] Support cylinders are respectively fixedly connected to both sides of the front end and the rear end of the connecting plate, a support sliding table is slidably connected to the lower end inside the support cylinder, a support rod is fixedly connected to the lower surface of the support sliding table, the lower end of the support rod extends to the lower part of the support cylinder, the first jacking rod is slidably connected inside the lower end of the support rod, a jacking frame is fixedly connected to the upper end of the support sliding table, a jacking box is fixedly connected to the side of the jacking frame close to the middle of the connecting plate, and the upper end of the jacking box is attached to the lower surface of the placing plate.

[0016] According to some embodiments of the present application, during the rotation of the first cam, it cooperates with the first circular reset block to jack up the first sliding plate, the second jacking rod and the intermediate frame by the first circular reset block.

[0017] According to some embodiments of the present application, the unilateral vibration mechanism includes a second long rotating rod and a third long rotating rod. The second long rotating rod is rotatably connected to the upper end of the inner wall of the front mounting frame, and the third long rotating rod is rotatably connected to the middle part of the inner wall of the rear mounting frame. The second long rotating rod and the third long rotating rod are respectively located in the middle of the middle frame. Second toothed cylinders are fixedly connected to the outer walls on both sides of the second long rotating rod and the third long rotating rod. During the upward movement of the rear first toothed plate, it meshes with the rear second toothed cylinder, and during the upward movement of the front first toothed plate, it meshes with the front second toothed cylinder. Second cams are fixedly connected to the outer walls of the second long rotating rod and the third long rotating rod near the middle. Second fixing plates are respectively fixedly connected to the upper part of the inner wall of the mounting frame, and a second telescopic cover is fixedly connected to the body of the second fixing plate;

[0018] A second sliding plate is slidably connected inside the second telescopic cover. A plurality of second reset short springs are fixedly connected to the edges of the inner top of the second telescopic cover, and the lower ends of the second reset short springs are fixedly connected to the upper surface of the second sliding plate. A second circular reset block is fixedly connected to the middle of the lower surface of the second sliding plate, and a third jacking rod is fixedly connected to the middle of the upper surface of the second sliding plate. The upper ends of the third jacking rods are fixedly connected with positioning plates. Both sides of the positioning plates are slidably connected to the outer wall of the support rod. A limiting ring is fixedly connected to the middle of the outer wall of the support rod, and the lower surface of the limiting ring is attached to the upper surface of the positioning plate.

[0019] According to some embodiments of the present application, the front second fixing plate is located above the second long rotating rod, and the rear second fixing plate is located above the third long rotating rod.

[0020] According to some embodiments of the present application, the coupling amplitude adjustment mechanism includes a support rectangular frame, which is fixedly connected to the outer wall of one side of the rectangular one-way slider. A second toothed plate is fixedly connected to the outer wall of one side of the support rectangular frame. An assembly frame is fixedly connected to one side of the upper surface of the middle part of the bottom plate. A short rotating rod is rotatably connected to the inner wall near the middle of the assembly frame. A third toothed cylinder is fixedly connected to the outer wall of the short rotating rod. A transmission rod is rotatably connected to one side of the upper surface of the middle part of the connecting plate. Transmission wheels are fixedly connected to the outer walls of the transmission rod and the front end of the short rotating rod. A toothed belt is sleeved on the outer wall of the transmission wheel. A third cam is fixedly connected to the outer wall of the transmission rod near the front end. A convex vibrating plate is fixedly connected to one side of the middle part of the lower surface of the placement plate. During the rotation of the third cam, it cooperates with the convex vibrating plate;

[0021] A one-way screw sleeve is provided on the outer wall of the rear end of the transmission rod. A circular one-way slider is sleeved on the outer wall of the one-way screw sleeve. An irregular connecting frame is fixedly connected to the lower surface of the circular one-way slider. A limiting frame is fixedly connected to the inner wall of the rear end of the jacking box near the lower end. An adjusting plate is slidably connected inside the limiting frame. A vibrating frustum is fixedly connected to the upper end of the adjusting plate. A sliding plate is fixedly connected to the lower surface of the adjusting plate. A first jacking frustum is fixedly connected to the lower end of the sliding plate. Limiting long plates are respectively fixedly connected to both sides of the front end of the lower surface of the jacking frame. Limiting sliding frames are slidably connected to the front ends of the limiting long plates. A T-shaped plate is fixedly connected to the lower part of the adjacent ends of the limiting sliding frames. A second jacking frustum is fixedly connected to the upper surface of the T-shaped plate. A pushing plate is fixedly connected to the outer wall of the rear end of the irregular connecting frame. The outer wall of the rear end of the pushing plate is in contact with the outer wall of the front end of the T-shaped plate. A reset thick spring is fixedly connected to the middle of the outer wall of the rear end of the T-shaped plate. The rear end of the reset thick spring is fixedly connected to the outer wall of the front end of the support cylinder.

[0022] According to some embodiments of the present application, the second toothed plate meshes with the third toothed cylinder during the upward movement.

[0023] According to some embodiments of the present application, reset thin springs are respectively fixedly connected to both sides of the lower surface of the vibrating frustum. The lower ends of the reset thin springs are fixedly connected to the upper surface of the limiting frame.

[0024] The beneficial effects of this application are as follows: During use, the four-corner vibration mechanism drives the four corners of the model storage mechanism to vibrate synchronously at the lower end thereof. The single-side vibration mechanism vibrates the front end or the rear end of the model storage mechanism at the upper end of the four-corner vibration mechanism. The coupling amplitude adjustment mechanism is at the upper end of the single-side vibration mechanism. When the four-corner vibration mechanism moves up and down, it drives one end of the single-side vibration mechanism to vibrate vertically and enables the coupling amplitude adjustment mechanism to drive the model storage mechanism to vibrate horizontally on one side, realizing the coupling vibration operation of the single-side vibration mechanism and the coupling amplitude adjustment mechanism on the model storage mechanism. Among them, by starting the servo motor, the rectangular one-way slider drives the support concave frame and the support rectangular frame to move up and down. First, it can accurately simulate various modes such as the synchronous jacking vibration of the four corners of the experimental model, the single-front-end single-side vibration, and the complex coupling vibration, and thus can accurately simulate various force conditions that the slope may encounter in an actual strong earthquake. Second, by only controlling the rotation direction and start / stop of the servo motor, the vibration mode can be switched, and thus the experimenter can quickly switch between various modes such as the synchronous jacking vibration of the four corners, the single-front-end single-side vibration, and the coupling vibration without complex equipment debugging or mechanical structure adjustment, greatly saving the experiment preparation time and improving the experiment efficiency. Third, it can accurately simulate the multi-directional, multi-frequency, and mutually coupled vibration impacts on the slope in an actual strong earthquake. The rear-end single-side vibration and the horizontal vibration act on the placement plate simultaneously, just like the complex forces caused by real seismic waves in different geological structures, making the environment where the experimental model is located highly close to the actual situation. Fourth, when the single-side vibration mechanism vibrates vertically, the vibration turntable of the coupling amplitude adjustment mechanism applies an upward jacking force to multiple positions of the placement plate, changing its force distribution. This not only creates a complex and real earthquake scenario but also, in the case of simulating a large-amplitude situation, superimposes small seismic waves, effectively improving the accuracy of the simulation experiment.

[0025] Additional aspects and advantages of this application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a three-dimensional structural schematic diagram of a slope instability initiation simulation device under strong earthquake action according to an embodiment of this application;

[0028] Figure 2 is a three-dimensional structural schematic diagram of the four-corner vibration mechanism, the single-side vibration mechanism, and the coupling amplitude adjustment mechanism according to an embodiment of this application;

[0029] Figure 3 is a three-dimensional structure schematic diagram of a model storage mechanism according to an embodiment of the present application;

[0030] Figure 4 is an assembly drawing of an experimental model according to an embodiment of the present application;

[0031] Figure 5 is a three-dimensional structure schematic diagram of a four-corner vibration mechanism according to an embodiment of the present application;

[0032] Figure 6 is a partial assembly drawing of a four-corner vibration mechanism according to an embodiment of the present application;

[0033] Figure 7 is an assembly drawing of a first telescopic cover, a support rod, a support cylinder, a jacking frame and a jacking box according to an embodiment of the present application;

[0034] Figure 8 is a three-dimensional structure schematic diagram of a single-side vibration mechanism and a four-corner vibration mechanism according to an embodiment of the present application;

[0035] Figure 9 is a three-dimensional structure schematic diagram of a single-side vibration mechanism according to an embodiment of the present application;

[0036] Figure 10 is a partial cross-sectional view of a single-side vibration mechanism according to an embodiment of the present application;

[0037] Figure 11 is a three-dimensional structure schematic diagram of a coupling amplitude adjustment mechanism according to an embodiment of the present application;

[0038] Figure 12 is an assembly drawing of a cross-section of a jacking box and internal components according to an embodiment of the present application;

[0039] Figure 13 is a partial view of a coupling amplitude adjustment mechanism according to an embodiment of the present application;

[0040] Figure 14 is an assembly drawing of a model storage mechanism and a coupling amplitude adjustment mechanism according to an embodiment of the present application.

[0041] Icons: 1. Model storage mechanism; 101. Base plate; 102. Support legs; 103. Connection frame; 104. Connection plate; 105. Vibration spring; 106. Placement plate; 107. Experimental model; 108. Protection frame; 2. Four-corner vibration mechanism; 201. Servo motor; 202. One-way screw; 203. Rectangular one-way slider; 204. Support concave frame; 205. First toothed plate; 206. Installation frame; 207. First long rotating rod; 208. First toothed cylinder; 209. First cam; 210. First fixing plate; 211. First telescopic cover; 212. First sliding plate; 213. First reset short spring; 214. First circular reset block; 215. Intermediate frame; 216. Support cylinder; 217. Support sliding table; 218. Support rod; 219. First jacking rod; 220. Jacking frame; 221. Jacking box; 222. Second jacking rod; 3. Single-side vibration mechanism; 301. Second long rotating rod; 302. Third long rotating rod; 303. Second toothed cylinder; 304. Second cam; 305. Second fixing plate; 306. Second telescopic cover; 307. Second sliding plate; 308. Second reset short spring; 309. Third jacking rod; 310. Second circular reset block; 311. Positioning plate; 312. Limit ring; 4. Coupled amplitude adjustment mechanism; 401. Support rectangular frame; 402. Second toothed plate; 403. Assembly frame; 404. Short rotating rod; 405. Third toothed cylinder; 406. Transmission rod; 407. Transmission wheel; 408. Toothed belt; 409. Third cam; 410. Convex vibration plate; 411. One-way sleeve; 412. Circular one-way slider; 413. Limit frame; 414. Adjusting plate; 415. Vibration turntable; 416. Reset thin spring; 417. Sliding plate; 418. First jacking turntable; 419. Limit sliding frame; 420. T-shaped plate; 421. Second jacking turntable; 422. Pushing plate; 423. Reset thick spring; 424. Limit long plate; 425. Special-shaped connecting frame. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0044] Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0045] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0048] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0050] The following describes a simulation device for slope instability initiation under strong earthquake action according to an embodiment of the present application with reference to the accompanying drawings.

[0051] As Figures 1 - 14 shown, a simulation device for slope instability initiation under strong earthquake action according to an embodiment of the present application includes: a model storage mechanism 1, a four-corner vibration mechanism 2, a single-side vibration mechanism 3, and a coupling amplitude adjustment mechanism 4.

[0052] As Figure 1 and Figure 2 shown, the model storage mechanism 1, the four-corner vibration mechanism 2, the four-corner vibration mechanism 2 is located at the lower end of the model storage mechanism 1, and the four-corner vibration mechanism 2 drives the four corners of the model storage mechanism 1 to vibrate synchronously. The single-side vibration mechanism 3, the single-side vibration mechanism 3 is located at the upper end of the four-corner vibration mechanism 2, so that the single-side vibration mechanism 3 vibrates the front end or the rear end of the model storage mechanism 1. The coupling amplitude adjustment mechanism 4, the coupling amplitude adjustment mechanism 4 is located at the upper end of the single-side vibration mechanism 3. During the up-and-down reciprocating movement of the four-corner vibration mechanism 2, it drives one end of the single-side vibration mechanism 3 to vibrate vertically and enables the coupling amplitude adjustment mechanism 4 to drive one side of the model storage mechanism 1 to vibrate horizontally, thereby enabling the single-side vibration mechanism 3 and the coupling amplitude adjustment mechanism 4 to perform a coupling vibration operation on the model storage mechanism 1 simultaneously.

[0053] In use, the four-corner vibration mechanism 2 drives the four corners of the model storage mechanism 1 to vibrate synchronously at the lower end of the model storage mechanism 1. The single-side vibration mechanism 3 vibrates the front end or the rear end of the model storage mechanism 1 at the upper end of the four-corner vibration mechanism 2. The coupling amplitude adjustment mechanism 4 is at the upper end of the single-side vibration mechanism 3. When the four-corner vibration mechanism 2 moves up and down, it drives one end of the single-side vibration mechanism 3 to vibrate vertically and enables the coupling amplitude adjustment mechanism 4 to drive one side of the model storage mechanism 1 to vibrate horizontally, realizing the coupling vibration operation of the single-side vibration mechanism 3 and the coupling amplitude adjustment mechanism 4 on the model storage mechanism 1.

[0054] As Figure 3 and Figure 4As shown, the model storage mechanism 1 includes a bottom plate 101 and an experimental model 107. Four corners of the upper surface of the bottom plate 101 are fixedly connected with support legs 102. The upper ends of the support legs 102 are fixedly connected with a connecting frame 103. The middle of the connecting frame 103 is fixedly connected with a connecting plate 104. Four corners of the upper surface of the connecting plate 104 are hingedly connected with vibration springs 105. The upper ends of the vibration springs 105 are hingedly connected with a placement plate 106. The experimental model 107 is arranged on the upper surface of the placement plate 106. The edge of the upper surface of the connecting frame 103 is fixedly connected with a protective frame 108.

[0055] As Figure 5 , Figure 6 and Figure 7As shown, the four-corner vibration mechanism 2 includes a servo motor 201. The servo motor 201 is fixedly connected to the middle of the upper surface of the bottom plate 101. The output end of the servo motor 201 is fixedly connected with a unidirectional screw rod 202. A rectangular unidirectional slider 203 is sleeved on the lower part of the unidirectional screw rod 202. Support concave frames 204 are fixedly connected to the outer walls of the front end and the rear end of the rectangular unidirectional slider 203. First toothed plates 205 are fixedly connected to the ends of the support concave frames 204 far away from the unidirectional screw rod 202. Installation frames 206 are fixedly connected to the front end and the rear end of the upper surface of the bottom plate 101. First long rotating rods 207 are rotatably connected to the lower ends of the inner walls of the installation frames 206. First toothed cylinders 208 are fixedly connected to the outer walls on both sides of the first long rotating rods 207. The first toothed plates 205 are meshed with the first toothed cylinders 208. First cams 209 are respectively fixedly connected to both sides of the outer wall of the first long rotating rod 207. A first fixing plate 210 is fixedly connected to the inner wall of the installation frame 206 near the lower end. A first telescopic cover 211 is fixedly connected to the body of the first fixing plate 210. A first sliding plate 212 is slidably connected inside the first telescopic cover 211. A plurality of first reset short springs 213 are fixedly connected to the edges of the inner top of the first telescopic cover 211. The lower ends of the first reset short springs 213 are fixedly connected to the upper surface of the first sliding plate 212. A first circular reset block 214 is fixedly connected to the middle of the lower surface of the first sliding plate 212. A second jacking rod 222 is fixedly connected to the middle of the upper surface of the first sliding plate 212. The upper end of the second jacking rod 222 extends to the upper part of the first telescopic cover 211 and is fixedly connected with an intermediate frame 215. A first jacking rod 219 is fixedly connected to the middle of the upper end of the intermediate frame 215. Support cylinders 216 are respectively fixedly connected to both sides of the front end and the rear end of the connecting plate 104. A support sliding table 217 is slidably connected to the lower end inside the support cylinder 216. A support rod 218 is fixedly connected to the lower surface of the support sliding table 217. The lower end of the support rod 218 extends to the lower part of the support cylinder 216. The first jacking rod 219 is slidably connected inside the lower end of the support rod 218. A jacking frame 220 is fixedly connected to the upper end of the support sliding table 217. A jacking box 221 is fixedly connected to the side of the jacking frame 220 close to the middle of the connecting plate 104. The upper end of the jacking box 221 is in contact with the lower surface of the placing plate 106. During the rotation of the first cam 209, it cooperates with the first circular reset block 214 to jack up the first sliding plate 212, the second jacking rod 222 and the intermediate frame 215. Specifically, when it is necessary to synchronously jack up and vibrate the four corners of the experimental model 107, start the servo motor 201 to rotate the unidirectional screw rod 202. At this time, the rectangular unidirectional slider 203 will drive the support concave frame 204 and the first toothed plate 205 to move upward accordingly. At this time, the movement of the first toothed plate 205 will drive the first toothed cylinder 208 and the first long rotating rod 207 to rotate. At the same time, during the rotation of the first long rotating rod 207, the first cam 209 on its outer wall rotates accordingly. When the first cam 209 rotates to the contact position with the first circular reset block 214,The first cam 209 will lift the first circular reset block 214 upward, thereby driving the first slide plate 212, the second lifting rod 222 and the middle frame 215 to move upward. At this time, the middle frame 215 moves upward through the first lifting rod 219 and the support rod 218 to act on the support slide 217. The support slide 217 slides upward in the support cylinder 216 and drives the lifting frame 220 and the lifting box 221 to rise. The lifting box 221 rises and pushes the experimental model 107 on the placement plate 106 to move upward, realizing the synchronous lifting vibration of the four corners of the model storage mechanism 1. When the first tooth plate 205 and the first tooth cylinder 208 are engaged, the servo motor 201 is reversed to make the first tooth plate 205 move downward, and the experimental model 107 on the placement plate 106 will complete the up and down vibration again, and the rotation direction of the servo motor 201 is repeated in a cycle to realize the synchronous lifting vibration of the four corners of the model storage mechanism 1.

[0056] like Figure 8 , Figure 9 and Figure 10 The unilateral vibration mechanism 3 includes a second long rotating rod 301 and a third long rotating rod 302. The second long rotating rod 301 is rotatably connected to the upper end of the inner wall of the front end mounting frame 206, and the third long rotating rod 302 is rotatably connected to the middle part of the inner wall of the rear end mounting frame 206. The second long rotating rod 301 and the third long rotating rod 302 are respectively located in the middle part of the middle frame 215. The outer walls on both sides of the second long rotating rod 301 and the third long rotating rod 302 are fixedly connected with the second gear cylinder 303. During the upward movement of the rear end first gear plate 205, the rear end second gear cylinder 303 is meshed with the rear end second gear cylinder 303. During the upward movement of the front end first gear plate 205, the front end second gear cylinder 303 is meshed with the front end second gear cylinder 303. The outer walls of the second long rotating rod 301 and the third long rotating rod 302 near the middle are fixedly connected with the second cam 304. The upper part of the inner wall of the mounting frame 206 is respectively fixedly connected with the second fixing plate 305. The plate body of the second fixing plate 305 is fixedly connected with the second telescopic The cover 306, the second telescopic cover 306 is slidably connected to the inside of the second telescopic cover 306 with a second slide plate 307, and a plurality of second return short springs 308 are fixedly connected to the edge of the top inside the second telescopic cover 306, and the lower ends of the second return short springs 308 are fixedly connected to the upper surface of the second slide plate 307, and the middle part of the lower surface of the second slide plate 307 is fixedly connected to the second circular return block 310, and the middle part of the upper surface of the second slide plate 307 is fixedly connected to the third lifting rod 309, and the upper end of the third lifting rod 309 is fixedly connected to the positioning plate 311, and both sides of the positioning plate 311 are slidably connected to the outer wall of the support rod 218, and the middle part of the outer wall of the support rod 218 is fixedly connected to the limiting ring 312, and the lower surface of the limiting ring 312 is fitted with the upper surface of the positioning plate 311, the front end second fixed plate 305 is located at the upper end of the second long rotating rod 301, and the rear end second fixed plate 305 is located at the upper end of the third long rotating rod 302.

[0057] like Figure 11 ,Figure 12 , Figure 13 and Figure 14As shown, the coupling amplitude adjustment mechanism 4 includes a support rectangular frame 401, which is fixedly connected to the outer wall of one side of the rectangular one-way slider 203. A second toothed plate 402 is fixedly connected to the outer wall of one side of the support rectangular frame 401. An assembly frame 403 is fixedly connected to the upper surface of one side of the middle part of the bottom plate 101. A short rotating rod 404 is rotatably connected to the inner wall near the middle of the assembly frame 403. A third toothed cylinder 405 is fixedly connected to the outer wall of the short rotating rod 404. A transmission rod 406 is rotatably connected to the upper surface of one side of the middle part of the connecting plate 104. Transmission wheels 407 are fixedly connected to the outer walls of the front ends of the transmission rod 406 and the short rotating rod 404. A toothed belt 408 is sleeved on the outer walls of the transmission wheels 407. A third cam 409 is fixedly connected to the outer wall of the transmission rod 406 near the front end. A convex vibrating plate 410 is fixedly connected to the lower surface of one side of the middle part of the placement plate 106. During the rotation of the third cam 409, it cooperates with the convex vibrating plate 410. A one-way screw sleeve 411 is arranged on the outer wall of the rear end of the transmission rod 406. A circular one-way slider 412 is sleeved on the outer wall of the one-way screw sleeve 411. An irregular connecting frame 425 is fixedly connected to the lower surface of the circular one-way slider 412. A limiting frame 413 is fixedly connected to the inner wall near the lower end of the rear end lifting box 221. An adjusting plate 414 is slidably connected inside the limiting frame 413. A vibrating frustum 415 is fixedly connected to the upper end of the adjusting plate 414. A sliding plate 417 is fixedly connected to the lower surface of the adjusting plate 414. A first lifting frustum 418 is fixedly connected to the lower end of the sliding plate 417. Limiting long plates 424 are respectively fixedly connected to the two sides of the front end of the lower surface of the lifting frame 220. Limiting sliding frames 419 are slidably connected to the front ends of the limiting long plates 424. A T-shaped plate 420 is fixedly connected to the lower part of the adjacent ends of the limiting sliding frames 419. A second lifting frustum 421 is fixedly connected to the upper surface of the T-shaped plate 420. A push plate 422 is fixedly connected to the outer wall of the rear end of the irregular connecting frame 425. The outer wall of the rear end of the push plate 422 is in contact with the outer wall of the front end of the T-shaped plate 420. A reset thick spring 423 is fixedly connected to the middle of the outer wall of the rear end of the T-shaped plate 420. The rear end of the reset thick spring 423 is fixedly connected to the outer wall of the front end of the support cylinder 216. During the upward movement of the second toothed plate 402, it meshes with the third toothed cylinder 405. Reset thin springs 416 are respectively fixedly connected to the two sides of the lower surface of the vibrating frustum 415. The lower ends of the reset thin springs 416 are fixedly connected to the upper surface of the limiting frame 413. Specifically, when the staff needs to perform coupled vibration on the experimental model 107, when the first toothed plate 205 at the rear end moves to the position of the second toothed cylinder 303 at the rear end, the second toothed plate 402 will also move to the position of the third toothed cylinder 405 synchronously. The start and end times of the meshing between the first toothed plate 205 at the rear end and the second toothed cylinder 303 at the rear end are synchronous with the meshing process between the second toothed plate 402 and the third toothed cylinder 405. At this time, the meshing between the first toothed plate 205 at the rear end and the second toothed cylinder 303 at the rear end will drive the third long rotating rod 302 to rotate. At this time, the third long rotating rod 302 will drive the second cam 304 to rotate.When the second cam 304 rotates, it will contact the corresponding second circular reset block 310 and jack it up, thereby driving the second slide plate 307, the third jacking rod 309 and the positioning plate 311 to move upward. When the positioning plate 311 moves upward, the limit ring 312 on the outer wall of the support rod 218 will limit the position of the positioning plate 311. Furthermore, during the upward movement of the positioning plate 311, it will synchronously drive the support rod 218 to move upward. At this time, the support rod 218 drives the support slide 217, the jacking frame 220 and the jacking box 221 to move upward again, applying a unilateral vibration force to the rear end of the placement plate 106. At the same time, the engagement between the second toothed plate 402 and the third toothed cylinder 405 drives the short rotating rod 404 to rotate, driving the transmission rod 406 to rotate through the transmission wheel 407 and the toothed belt 408. When the transmission rod 406 rotates, the third cam 409 at its front end cooperates with the convex vibration plate 410 to apply a lateral vibration force to the placement plate 106, causing the placement plate 106 to generate lateral vibration. At the same time, when the transmission rod 406 rotates, the circular one-way slider 412 drives the special-shaped connecting frame 425 to move. The push plate 422 at the rear end of the special-shaped connecting frame 425 pushes the T-shaped plate 420 to move. The second jacking round platform 421 on the T-shaped plate 420 interacts with the first jacking round platform 418. At this time, during the movement of the T-shaped plate 420, through the contact and separation between the second jacking round platform 421 and the first jacking round platform 418, and in cooperation with the expansion and contraction of the reset fine spring 416, the height position of the vibration round platform 415 is changed, thereby adjusting the magnitude and direction of the force on the placement plate 106, and realizing the adjustment of the vibration amplitude and frequency. Among them, by starting the servo motor 201, the rectangular one-way slider 203 drives the support concave frame 204 and the support rectangular frame 401 to move up and down. First, it can accurately simulate various modes such as synchronous jacking vibration at the four corners of the experimental model 107, single-front unilateral vibration, and complex coupled vibration of the experimental model 107, and can thus accurately simulate various force conditions that the slope may encounter in actual strong earthquakes. Second, only by controlling the rotation direction and start / stop of the servo motor 201 can the vibration mode be switched. Therefore, the experimenter can quickly switch between various modes such as synchronous jacking vibration at the four corners, single-front unilateral vibration, and coupled vibration without complex equipment debugging or mechanical structure adjustment, greatly saving the experimental preparation time and improving the experimental efficiency. Third, it can accurately simulate the multi-directional, multi-frequency and mutually coupled vibration impacts on the slope in actual strong earthquakes. The rear-end unilateral vibration and the lateral vibration act on the placement plate 106 at the same time, just like the complex forces caused by real seismic waves in different geological structures, making the environment where the experimental model 107 is located highly close to the actual situation. Fourth, when the unilateral vibration mechanism 3 vibrates vertically, the vibration round platform 415 of the coupled amplitude adjustment mechanism 4 applies an upward jacking force to multiple positions of the placement plate 106, changing its force distribution. This not only creates a complex and real earthquake scenario, but also, in the simulation of large-amplitude situations, superimposed small seismic waves effectively improve the accuracy of the simulation experiment.,

[0058] Specifically, the working principle of the slope instability initiation simulation device under strong earthquake action: When simulating slope instability initiation, first determine the type of vibration to be simulated. When synchronous jacking vibration is required at the four corners of the experimental model 107, start the servo motor 201 to rotate the unidirectional screw 202. At this time, the rectangular unidirectional slider 203 will drive the support concave frame 204 and the first toothed plate 205 to move upward. At this time, the movement of the first toothed plate 205 will drive the first toothed cylinder 208 and the first long rotating rod 207 to rotate. At the same time, during the rotation of the first long rotating rod 207, the first cam 209 on its outer wall will rotate accordingly. When the first cam 209 rotates to the position where it contacts the first circular reset block 214, the first cam 209 will jack up the first circular reset block 214 upward, thereby driving the first slide plate 212, the second jacking rod 222, and the middle frame 215 to move upward. At this time, the upward movement of the middle frame 215 acts on the support slide table 217 through the first jacking rod 219 and the support rod 218. The support slide table 217 slides upward in the support cylinder 216 and drives the jacking frame 220 and the jacking box 221 to rise. The jacking box 221 rises and pushes the experimental model 107 on the placement plate 106 to move upward, realizing synchronous jacking vibration at the four corners of the model storage mechanism 1. When the meshing between the first toothed plate 205 and the first toothed cylinder 208 ends, reverse the servo motor 201 to make the first toothed plate 205 move downward, and the experimental model 107 on the placement plate 106 will complete the up and down vibration again. Then, cycle and repeat the rotation direction of the servo motor 201 to realize synchronous jacking vibration at the four corners of the model storage mechanism 1. When the staff needs to perform coupled vibration on the experimental model 107, when the first toothed plate 205 at the rear moves to the position of the second toothed cylinder 303 at the rear, the second toothed plate 402 will also move synchronously to the position of the third toothed cylinder 405. The start and end times of the meshing between the first toothed plate 205 at the rear and the second toothed cylinder 303 at the rear are synchronized with the meshing process between the second toothed plate 402 and the third toothed cylinder 405. At this time, the meshing between the first toothed plate 205 at the rear and the second toothed cylinder 303 at the rear will drive the third long rotating rod 302 to rotate. At this time, the third long rotating rod 302 will drive the second cam 304 to rotate. The rotation of the second cam 304 will contact and jack up the corresponding second circular reset block 310, thereby driving the second slide plate 307, the third jacking rod 309, and the positioning plate 311 to move upward. When the positioning plate 311 moves upward, the limiting ring 312 on the outer wall of the support rod 218 will limit the position of the positioning plate 311. Therefore, the positioning plate 311 will drive the support rod 218 to move upward synchronously during the upward movement. At this time, the support rod 218 will drive the support slide table 217, the jacking frame 220, and the jacking box 221 to move upward again, applying a unilateral vibration force to the rear end of the placement plate 106. At the same time, the meshing between the second toothed plate 402 and the third toothed cylinder 405 drives the short rotating rod 404 to rotate, and drives the transmission rod 406 to rotate through the transmission wheel 407 and the toothed belt 408. When the transmission rod 406 rotates,The third cam 409 at its front end cooperates with the convex vibrating plate 410 to apply a lateral vibration force to the placement plate 106, causing the placement plate 106 to generate lateral vibration. At the same time, when the transmission rod 406 rotates, the circular one-way slider 412 will drive the special-shaped connecting frame 425 to move. The push plate 422 at the rear end of the special-shaped connecting frame 425 pushes the T-shaped plate 420 to move. The second lifting round platform 421 on the T-shaped plate 420 interacts with the first lifting round platform 418. At this time, during the movement of the T-shaped plate 420, through the contact and separation of the second lifting round platform 421 and the first lifting round platform 418, and in cooperation with the expansion and contraction of the reset fine spring 416, the height position of the vibrating round platform 415 is changed, thereby adjusting the magnitude and direction of the force on the placement plate 106, and realizing the adjustment of the vibration amplitude and frequency. In this coupled vibration state, the placement plate 106 is simultaneously subjected to a unilateral vibration force at the rear end and a lateral vibration force, and the experimental model 107 is in a complex vibration environment. At the same time, during the process of changing the height position of the vibrating round platform 415, upward pushing forces can be continuously applied to multiple positions of the placement plate 106. Therefore, this complex force change and dynamic adjustment process can accurately simulate the multi-directional, multi-frequency and mutually coupled vibration impact conditions suffered by the slope in an actual strong earthquake scenario, effectively improving the accuracy of the experiment. When a simulation experiment needs to be carried out on a single front end of the experimental model 107, the servo motor 201 is started to make the rectangular one-way slider 203 drive the support concave frame 204 and the first toothed plate 205 to move upward until they mesh with the second toothed cylinder 303 at the front end. At this time, the second long rotating rod 301 at the front end will be driven to rotate. During the rotation of the second long rotating rod 301, the second cam 304 also rotates accordingly, causing the second cam 304 to contact and act with the corresponding second circular reset block 310, driving related components to generate a unilateral vibration action, such as making the second sliding plate 307, the third lifting rod 309, and the positioning plate 311 move according to the corresponding mechanism, and applying an upward lifting force to the front end of the placement plate 106, causing the front end of the placement plate 106 to lift, realizing the simulated vibration of a single front end of the experimental model 107. When the second toothed cylinder 303 at the front end does not mesh with the first toothed plate 205 at the front end, the servo motor 201 is started in the reverse direction again to make the first toothed plate 205 move downward, and an upward lifting force will be applied to the front end of the placement plate 106 again. Repeating this process can form a stable periodic unilateral front-end vibration, accurately simulating the force condition of the front end of the experimental model 107 under specific vibration conditions.,

[0059] It should be noted that the specific model specifications of the servo motor 201 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail here.,

[0060] The power supply and principle of the servo motor 201 are clear to those skilled in the art and will not be elaborated in detail here.,

[0061] The above are only the embodiments of the present application and are not intended to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0062] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, and all should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A simulation device for slope instability initiation under strong earthquake action, characterized in that, Comprising: Model storage mechanism (1); Quadrilateral vibration mechanism (2), the quadrilateral vibration mechanism (2) is located at the lower end of the model storage mechanism (1), and the quadrilateral vibration mechanism (2) drives the four corners of the model storage mechanism (1) to vibrate synchronously; Unilateral vibration mechanism (3), the unilateral vibration mechanism (3) is located at the upper end of the quadrilateral vibration mechanism (2), and the unilateral vibration mechanism (3) vibrates the front end or the rear end of the model storage mechanism (1); Coupled amplitude adjustment mechanism (4), the coupled amplitude adjustment mechanism (4) is located at the upper end of the unilateral vibration mechanism (3). During the up and down reciprocating movement of the quadrilateral vibration mechanism (2), it drives one end of the unilateral vibration mechanism (3) to vibrate vertically, and the coupled amplitude adjustment mechanism (4) drives one side of the model storage mechanism (1) to vibrate horizontally, so that the unilateral vibration mechanism (3) and the coupled amplitude adjustment mechanism (4) can simultaneously perform coupled vibration operations on the model storage mechanism (1); The model storage mechanism (1) includes a bottom plate (101) and an experimental model (107). Four corners of the upper surface of the bottom plate (101) are fixedly connected with support legs (102). The upper ends of the support legs (102) are fixedly connected with a connection frame (103). The middle of the connection frame (103) is fixedly connected with a connection plate (104). Four corners of the upper surface of the connection plate (104) are hinged with vibration springs (105). The upper ends of the vibration springs (105) are hinged with a placement plate (106). The experimental model (107) is arranged on the upper surface of the placement plate (106). The quadrilateral vibration mechanism (2) includes a servo motor (201). The servo motor (201) is fixedly connected to the middle of the upper surface of the bottom plate (101). The output end of the servo motor (201) is fixedly connected with a unidirectional screw (202). A rectangular unidirectional slider (203) is sleeved on the lower part of the unidirectional screw (202). Outer walls of the front end and the rear end of the rectangular unidirectional slider (203) are fixedly connected with support concave frames (204). One ends of the support concave frames (204) far from the unidirectional screw (202) are fixedly connected with first toothed plates (205). The front end and the rear end of the upper surface of the bottom plate (101) are fixedly connected with mounting frames (206). Lower ends of inner walls of the mounting frames (206) are rotatably connected with first long rotating rods (207). Outer walls of both sides of the first long rotating rods (207) are fixedly connected with first toothed cylinders (208). The first toothed plates (205) are meshed with the first toothed cylinders (208). Both sides of the outer wall of the first long rotating rod (207) are respectively fixedly connected with first cams (209); The inner wall of the installation frame (206) near the lower end is fixedly connected with a first fixing plate (210). A first telescopic cover (211) is fixedly connected to the plate body of the first fixing plate (210). A first sliding plate (212) is slidably connected inside the first telescopic cover (211). A plurality of first reset short springs (213) are fixedly connected to the edges of the inner top of the first telescopic cover (211). The lower ends of the first reset short springs (213) are fixedly connected to the upper surface of the first sliding plate (212). A first circular reset block (214) is fixedly connected to the middle of the lower surface of the first sliding plate (212). A second jacking rod (222) is fixedly connected to the middle of the upper surface of the first sliding plate (212). The upper end of the second jacking rod (222) extends to the upper part of the first telescopic cover (211) and is fixedly connected with an intermediate frame (215). A first jacking rod (219) is fixedly connected to the middle of the upper end of the intermediate frame (215). Support cylinders (216) are fixedly connected to both sides of the front end and the rear end of the connecting plate (104). A support sliding table (217) is slidably connected to the lower end inside the support cylinder (216). A support rod (218) is fixedly connected to the lower surface of the support sliding table (217). The lower end of the support rod (218) extends to the lower part of the support cylinder (216). The first jacking rod (219) is slidably connected inside the lower end of the support rod (218). A jacking frame (220) is fixedly connected to the upper end of the support sliding table (217). A jacking box (221) is fixedly connected to the side of the jacking frame (220) close to the middle of the connecting plate (104). The upper end of the jacking box (221) is in contact with the lower surface of the placing plate (106).

2. The slope instability initiation simulation device under strong earthquake action according to claim 1, characterized in that A protective frame (108) is fixedly connected to the edge of the upper surface of the connecting frame (103).

3. The slope instability initiation simulation device under strong earthquake action according to claim 1, characterized in that, During the rotation of the first cam (209), it cooperates with the first circular reset block (214) to jack up the first sliding plate (212), the second jacking rod (222) and the intermediate frame (215) by the first circular reset block (214).

4. The slope instability initiation simulation device under strong earthquake action according to claim 1, wherein The unilateral vibration mechanism (3) includes a second long rotating rod (301) and a third long rotating rod (302). The second long rotating rod (301) is rotatably connected to the upper end of the inner wall of the front mounting frame (206), and the third long rotating rod (302) is rotatably connected to the middle part of the inner wall of the rear mounting frame (206). The second long rotating rod (301) and the third long rotating rod (302) are respectively located in the middle of the middle frame (215). Outer walls on both sides of the second long rotating rod (301) and the third long rotating rod (302) are fixedly connected with second toothed cylinders (303). During the upward movement of the rear first toothed plate (205), it meshes with the rear second toothed cylinder (303), and during the upward movement of the front first toothed plate (205), it meshes with the front second toothed cylinder (303). Outer walls of the second long rotating rod (301) and the third long rotating rod (302) near the middle are fixedly connected with second cams (304). Upper parts of the inner wall of the mounting frame (206) are respectively fixedly connected with second fixing plates (305), and the body of the second fixing plate (305) is fixedly connected with a second telescopic cover (306); A second sliding plate (307) is slidably connected inside the second telescopic cover (306). Edges of the inner top of the second telescopic cover (306) are fixedly connected with a plurality of second reset short springs (308). Lower ends of the second reset short springs (308) are fixedly connected with the upper surface of the second sliding plate (307). The middle part of the lower surface of the second sliding plate (307) is fixedly connected with a second circular reset block (310). The middle part of the upper surface of the second sliding plate (307) is fixedly connected with a third jacking rod (309). Upper ends of the third jacking rod (309) are fixedly connected with positioning plates (311). Both sides of the positioning plate (311) are slidably connected to the outer wall of the support rod (218). The middle part of the outer wall of the support rod (218) is fixedly connected with a limit ring (312), and the lower surface of the limit ring (312) is in contact with the upper surface of the positioning plate (311).

5. A simulation device for slope instability initiation under strong earthquake action according to claim 4, characterized in that, The front second fixing plate (305) is located above the second long rotating rod (301), and the rear second fixing plate (305) is located above the third long rotating rod (302).

6. The slope instability initiation simulation device under strong earthquake action according to claim 1, wherein, The coupling amplitude adjustment mechanism (4) includes a support rectangular frame (401), the support rectangular frame (401) is fixedly connected to the outer wall of one side of the rectangular one-way slider (203), a second toothed plate (402) is fixedly connected to the outer wall of one side of the support rectangular frame (401), an assembly frame (403) is fixedly connected to one side of the upper surface of the middle part of the bottom plate (101), a short rotating rod (404) is rotatably connected to the inner wall near the middle of the assembly frame (403), a third toothed cylinder (405) is fixedly connected to the outer wall of the short rotating rod (404), a transmission rod (406) is rotatably connected to one side of the upper surface of the middle part of the connecting plate (104), transmission wheels (407) are fixedly connected to the outer walls of the front ends of the transmission rod (406) and the short rotating rod (404), a toothed belt (408) is sleeved on the outer walls of the transmission wheels (407), a third cam (409) is fixedly connected to the outer wall of the transmission rod (406) near the front end, a convex vibration plate (410) is fixedly connected to one side of the middle part of the lower surface of the placement plate (106), and the third cam (409) cooperates with the convex vibration plate (410) during the rotation process; A one-way screw sleeve (411) is arranged on the outer wall of the rear end of the transmission rod (406), a circular one-way slider (412) is sleeved on the outer wall of the one-way screw sleeve (411), a special-shaped connecting frame (425) is fixedly connected to the lower surface of the circular one-way slider (412), a limiting frame (413) is fixedly connected to the inner wall near the lower end of the rear end lifting box (221), an adjusting plate (414) is slidably connected inside the limiting frame (413), a vibration frustum (415) is fixedly connected to the upper end of the adjusting plate (414), a sliding plate (417) is fixedly connected to the lower surface of the adjusting plate (414), a first lifting frustum (418) is fixedly connected to the lower end of the sliding plate (417), limiting long plates (424) are respectively fixedly connected to both sides of the front end of the lower surface of the lifting frame (220), limiting sliding frames (419) are slidably connected to the front ends of the limiting long plates (424), a T-shaped plate (420) is fixedly connected to the lower part of the adjacent ends of the limiting sliding frames (419), a second lifting frustum (421) is fixedly connected to the upper surface of the T-shaped plate (420), a push plate (422) is fixedly connected to the outer wall of the rear end of the special-shaped connecting frame (425), the outer wall of the rear end of the push plate (422) is attached to the outer wall of the front end of the T-shaped plate (420), and a reset thick spring (423) is fixedly connected to the middle of the outer wall of the rear end of the T-shaped plate (420), and the rear end of the reset thick spring (423) is fixedly connected to the outer wall of the front end of the support cylinder (216).

7. A simulation device for slope instability initiation under strong earthquake action according to claim 6, characterized in that During the upward movement of the second toothed plate (402), it meshes with the third toothed cylinder (405).

8. A slope instability initiation simulation device under strong earthquake action according to claim 6, characterized in that, Reset thin springs (416) are respectively fixedly connected to both sides of the lower surface of the vibration frustum (415), and the lower ends of the reset thin springs (416) are fixedly connected to the upper surface of the limiting frame (413).

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