Slope instability starting simulation device under action of strong earthquake

Abstract

The embodiment of the invention provides a slope instability starting simulation device under the action of a strong earthquake, and relates to the technical field of earthquake simulation equipment. A slope instability starting simulation device under the action of strong shock comprises a model storage mechanism, a four-corner vibration mechanism located at the lower end of the model storage mechanism and driving four corners of the model storage mechanism to synchronously generate vibration, and a unilateral vibration mechanism located at the lower end of the model storage mechanism and driving the model storage mechanism to synchronously generate vibration. 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 is coupled with an amplitude adjusting mechanism. The device can accurately simulate multiple modes such as four-corner synchronous jacking vibration, single-front-end single-side vibration and complex coupling vibration of an experiment model, further can accurately simulate various stress conditions possibly encountered by a side slope in an actual strong earthquake, and greatly improves the experiment precision.

Description

Technical Field

[0001] The present application relates to the technical field of earthquake simulation equipment, and in particular to a device for simulating the start-up of slope instability under strong earthquakes. Background Art

[0002] Earthquakes are one of the main factors that trigger landslides. Under the action of earthquakes, the stability of slope soil or rock is destroyed. When the shear stress exceeds the shear strength of the rock and soil, the rock and soil will slide along a sliding surface, forming a landslide, which will seriously affect the surrounding ecological environment and the local economic development. The use of slope instability simulation devices can predict in advance the possibility and characteristics of slope instability under specific earthquake parameters, and provide key data support for the formulation of scientific and reasonable slope protection plans, thereby reducing the potential threat of geological disasters such as landslides to the ecology and economy, and helping disaster prevention, mitigation and sustainable development in related areas.

[0003] However, most of the existing slope instability start-up 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 of the slope during an earthquake, resulting in a large deviation between the experimental data and the stress and deformation state of the slope in an actual earthquake. At the same time, the various vibration function modules of the existing slope instability start-up simulation devices are relatively independent and have poor collaborative working capabilities with each other. This makes it difficult to achieve rapid conversion between modules when switching vibration modes, thereby wasting experimental preparation time and reducing experimental efficiency.

[0004] In the case of an earthquake with a larger vibration amplitude, there will generally be smaller seismic waves crisscrossing and overlapping each other. These smaller seismic waves and the larger amplitude seismic waves interweave and influence each other, changing the mechanical equilibrium of the slope. However, when simulating earthquakes with larger vibration amplitudes, most of the existing slope instability initiation simulation devices find it difficult to simulate the smaller seismic wave components present in the larger amplitude, making it difficult for the experiment to fully reproduce the complex stress conditions faced by the slope in a real earthquake scenario. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a slope instability start-up simulation device under strong earthquakes, which can accurately simulate the synchronous lifting vibration of the four corners of the experimental model, the single front end unilateral vibration, and complex coupled vibration and other modes, and thus can accurately simulate various stress conditions that the slope may encounter in an actual strong earthquake. At the same time, when the unilateral vibration mechanism vibrates vertically, the vibration table coupled with the amplitude adjustment mechanism applies an upward lifting force to multiple positions of the placement plate to change its force distribution, which not only creates a complex and realistic earthquake scene, but also simulates the superimposed small earthquake waves in the large amplitude scenario, effectively improving the accuracy of the simulation experiment.

[0006] According to an embodiment of the present application, a device for simulating the instability of a slope under a strong earthquake comprises: Model storage organization; A four-corner vibration mechanism, the four-corner vibration mechanism is located at the lower end of the model storage mechanism, and the four-corner vibration mechanism drives the four corners of the model storage mechanism to vibrate synchronously; A unilateral vibration mechanism, the unilateral vibration mechanism is located at the upper end of the four-corner vibration mechanism, so that the unilateral vibration mechanism vibrates the front end or the rear end of the model storage mechanism; The coupling amplitude adjustment mechanism is located at the upper end of the unilateral vibration mechanism. During the up and down reciprocating movement of the four-corner vibration mechanism, one end of the unilateral vibration mechanism is driven to vibrate vertically, and the coupling amplitude adjustment mechanism drives one side of the model storage mechanism to vibrate laterally, thereby enabling the unilateral vibration mechanism and the coupling amplitude adjustment mechanism to carry out coupled vibration operations on the model storage mechanism at the same time.

[0007] According to some embodiments of the present application, the model storage mechanism includes a base plate and an experimental model, the four corners on the upper surface of the base plate are fixedly connected to support legs, the upper ends of the support legs are fixedly connected to a connecting frame, the middle part of the connecting frame is fixedly connected to a connecting plate, the four corners on the upper surface of the connecting plate are hingedly connected to vibration springs, the upper end of the vibration spring is hingedly connected to a placement plate, and the experimental model is arranged on the upper surface of the placement plate.

[0008] 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.

[0009] 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 part of the upper surface of the base plate, the output end of the servo motor is fixedly connected to a one-way screw, the lower part of the one-way screw is sleeved with a rectangular one-way slider, the outer walls of the front and rear ends of the rectangular one-way slider are fixedly connected to a supporting concave frame, the end of the supporting concave frame away from the one-way screw is fixedly connected to a first tooth plate, the front and rear ends of the upper surface of the base plate are fixedly connected to a mounting frame, the lower ends of the inner walls of the mounting frame are rotatably connected to a first long rotating rod, the outer walls on both sides of the first long rotating rod are fixedly connected to a first gear cylinder, the first gear plate and the first gear cylinder are meshed with each other, and the two sides of the outer wall of the first long rotating rod are respectively fixedly connected to first cams; The inner wall of the mounting frame near the lower end is fixedly connected with a first fixing plate, the plate body of the first fixing plate is fixedly connected with a first telescopic cover, the interior of the first telescopic cover is slidably connected with a first slide plate, the edges of the inner top of the first telescopic cover are fixedly connected with a plurality of first short return springs, the lower ends of the first short return springs are fixedly connected with the upper surface of the first slide plate, the middle part of the lower surface of the first slide plate is fixedly connected with a first circular return block, the middle part of the upper surface of the first slide plate is fixedly connected with a second lifting rod, the upper end of the second lifting rod extends to the upper part of the first telescopic cover and is fixedly connected with a middle frame, and the middle part of the upper end of the middle frame is fixedly connected with the first lifting rod; The front and rear ends of the connecting plate are fixedly connected with support tubes on both sides respectively, the lower end of the support tube is slidably connected with a support slide, the lower surface of the support slide is fixedly connected with a support rod, the lower end of the support rod extends to the lower part of the support tube, the first lifting rod is slidably connected inside the lower end of the support rod, the upper end of the support slide is fixedly connected with a lifting frame, the lifting frame is fixedly connected with a lifting box on one side close to the middle of the connecting plate, and the upper end of the lifting box is in contact with the lower surface of the placement plate.

[0010] According to some embodiments of the present application, the first cam cooperates with the first circular reset block during rotation, so that the first circular reset block lifts the first slide plate, the second lifting rod and the middle frame upward.

[0011] 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 installation frame at the front end, and the third long rotating rod is rotatably connected to the middle part of the inner wall of the installation frame at the rear end, the second long rotating rod and the third long rotating rod are respectively located in the middle part of the middle frame, the outer walls on both sides of the second long rotating rod and the third long rotating rod are fixedly connected with a second gear cylinder, the first gear plate at the rear end is meshed with the second gear cylinder at the rear end during the upward movement of the first gear plate at the front end during the upward movement of the first gear plate at the front end, the outer walls of the second long rotating rod and the third long rotating rod near the middle are fixedly connected with a second cam, the upper part of the inner wall of the installation frame is respectively fixedly connected with a second fixing plate, and the plate body of the second fixing plate is fixedly connected with a second telescopic cover; A second slide is slidably connected to the inside of the second telescopic cover, and a plurality of second short return springs are fixedly connected to the edge of the top inside the second telescopic cover, and the lower ends of the second short return springs are fixedly connected to the upper surface of the second slide, and a second circular return block is fixedly connected to the middle of the lower surface of the second slide, and a third lifting rod is fixedly connected to the middle of the upper surface of the second slide, and the upper ends of the third lifting rods are fixedly connected to positioning plates, and both sides of the positioning plates are slidably connected to the outer wall of the support rod, and 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 in contact with the upper surface of the positioning plate.

[0012] According to some embodiments of the present application, the second fixing plate at the front end is located at the upper end of the second long rotating rod, and the second fixing plate at the rear end is located at the upper end of the third long rotating rod.

[0013] According to some embodiments of the present application, the coupling amplitude adjustment mechanism includes a supporting rectangular frame, the supporting rectangular frame is fixedly connected to the outer wall of one side of the rectangular unidirectional slider, the outer wall of one side of the supporting rectangular frame is fixedly connected to a second tooth plate, one side of the middle upper surface of the bottom plate is fixedly connected to an assembly frame, the inner wall of the assembly frame close to the middle is rotatably connected to a short rotating rod, the outer wall of the short rotating rod is fixedly connected to a third gear cylinder, one side of the middle upper surface of the connecting plate is rotatably connected to a transmission rod, the outer walls of the transmission rod and the front ends of the short rotating rod are both fixedly connected to a transmission wheel, the outer wall of the transmission wheel is sleeved with a toothed belt, the outer wall of the transmission rod close to the front end is fixedly connected to a third cam, and one side of the middle of the lower surface of the placement plate is fixedly connected to a convex vibration plate, and the third cam cooperates with the convex vibration plate during rotation; The outer wall of the rear end of the transmission rod is provided with a one-way screw sleeve, and the outer wall of the one-way screw sleeve is provided with a circular one-way sliding block, and the lower surface of the circular one-way sliding block is fixedly connected to the special-shaped connecting frame, and the inner wall of the rear end of the jacking box near the lower end is fixedly connected to the limited position frame, and the inner wall of the limit frame is slidably connected to the inner wall of the limit frame. The two sides of the front end of the lower surface of the jacking frame are respectively fixedly connected to the limited position long plate, and the front end of the limited position long plate is slidably connected to the limited position slide, and the lower part of the adjacent end of the limited slide is fixedly connected with a T-shaped plate, and the upper surface of the T-shaped plate is fixedly connected to the second lifting round table, and the outer wall of the rear end of the special-shaped connecting frame is fixedly connected to the push plate, and the outer wall of the rear end of the push plate is fitted with the outer wall of the front end of the T-shaped plate, and the middle part of the outer wall of the rear end of the T-shaped plate is fixedly connected to the outer wall of the front end of the rear end support cylinder of the reset thick spring is fixedly connected.

[0014] According to some embodiments of the present application, the second tooth plate meshes with the third tooth cylinder during the process of moving upward.

[0015] According to some embodiments of the present application, thin return springs are fixedly connected to both sides of the lower surface of the vibration circular table, and the lower ends of the thin return springs are fixedly connected to the upper surface of the limit frame.

[0016] The beneficial effects of the present application are as follows: when in use, the four-corner vibration mechanism drives the four corners of the model storage mechanism to vibrate synchronously at the lower end, the unilateral vibration mechanism vibrates the front end or rear end of the model storage mechanism at the upper end of the four-corner vibration mechanism, and the coupling amplitude adjustment mechanism is at the upper end of the unilateral vibration mechanism. When the four-corner vibration mechanism moves up and down, it drives one end of the unilateral vibration mechanism to vibrate vertically and makes the coupling amplitude adjustment mechanism drive one side of the model storage mechanism to vibrate laterally, thereby realizing the coupled vibration operation of the model storage mechanism by the unilateral vibration mechanism and the coupling amplitude adjustment mechanism, wherein, by starting the servo motor to make the rectangular unidirectional slider drive the supporting concave frame and the supporting rectangular frame to move up and down, firstly, it can accurately simulate various modes such as synchronous jacking vibration of the four corners of the experimental model, single front end unilateral vibration and complex coupled vibration, thereby being able to accurately simulate various stress conditions that the slope may encounter in an actual strong earthquake, and secondly, only by controlling the servo motor The vibration mode can be switched by turning the steering and starting and stopping the servo motor, so the experimenter can quickly switch between multiple modes such as synchronous lifting vibration at four corners, single front-end unilateral vibration and coupled vibration without complicated equipment debugging or mechanical structure adjustment, which greatly saves the experimental preparation time and improves the experimental efficiency. Thirdly, it can accurately simulate the multi-directional, multi-frequency and mutually coupled vibration impact on the slope in an actual strong earthquake. The rear-end unilateral vibration and lateral vibration act on the placement plate at the same time, just like the complex forces caused by real seismic waves in different geological structures, making the environment in which the experimental model is located highly close to the actual environment. Fourthly, when the unilateral vibration mechanism vibrates vertically, the vibration table coupled with the amplitude adjustment mechanism applies lifting force to multiple positions of the placement plate to change its force distribution. This not only creates a complex and realistic earthquake scene, but also simulates the superimposed small seismic waves in the large amplitude scenario, which effectively improves the accuracy of the simulation experiment.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a device for simulating the start of slope instability under strong earthquake according to an embodiment of the present application; Figure 2 It is a schematic diagram of the three-dimensional structure of the four-corner vibration mechanism, the single-side vibration mechanism and the coupling amplitude adjustment mechanism according to the embodiment of the present application; Figure 3is a schematic diagram of the three-dimensional structure of a model storage mechanism according to an embodiment of the present application; Figure 4 is an assembly diagram of an experimental model according to an embodiment of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of a four-corner vibration mechanism according to an embodiment of the present application; Figure 6 is a partial assembly diagram of a four-corner vibration mechanism according to an embodiment of the present application; Figure 7 is an assembly diagram of a first telescopic cover, a support rod, a support cylinder, a lifting frame and a lifting box according to an embodiment of the present application; Figure 8 is a schematic diagram of the three-dimensional structure of a unilateral vibration mechanism and a four-corner vibration mechanism according to an embodiment of the present application; Fig. 9 is a schematic diagram of the three-dimensional structure of a unilateral vibration mechanism according to an embodiment of the present application; Fig.10 is a partial cross-sectional view of a unilateral vibration mechanism according to an embodiment of the present application; Fig.11 is a schematic diagram of the three-dimensional structure of the coupling amplitude adjustment mechanism according to an embodiment of the present application; Fig.12 is a cross-sectional view of a lifting box and an assembly view of internal components according to an embodiment of the present application; Fig.13 is a partial view of a coupling amplitude adjustment mechanism according to an embodiment of the present application; Fig.14 It is an assembly diagram of a model storage mechanism and a coupling amplitude adjustment mechanism according to an embodiment of the present application.

[0020] Icons: 1. Model storage mechanism; 101. Bottom 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 tooth plate; 206. Installation frame; 207. First long rotating rod; 208. First tooth cylinder; 20 9. First cam; 210. First fixed plate; 211. First telescopic cover; 212. First slide plate; 213. First short return spring; 214. First circular return block; 215. Middle frame; 216. Support cylinder; 217. Support slide; 218. Support rod; 219. First lifting rod; 220. Lifting frame; 221. Lifting box; 222. Second lifting rod; 3. Single-sided vibration mechanism; 301. Second long rotating rod; 302. Third long rotating rod; 303. First Second gear cylinder; 304, second cam; 305, second fixed plate; 306, second telescopic cover; 307, second slide plate; 308, second short reset spring; 309, third lifting rod; 310, second circular reset block; 311, positioning plate; 312, limit ring; 4, coupling amplitude adjustment mechanism; 401, supporting rectangular frame; 402, second gear plate; 403, assembly frame; 404, short rotating rod; 405, third gear cylinder; 406, transmission rod; 407, transmission wheel; 408, toothed belt; 409, third cam; 410, convex vibration plate; 411, one-way screw sleeve; 412, circular one-way slider; 413, limit frame; 414, adjustment plate; 415, vibration round table; 416, fine reset spring; 417, sliding plate; 418, first lifting round table; 419, limit slide; 420, T-shaped plate; 421, second lifting round table; 422, push plate; 423, thick reset spring; 424, limit long plate; 425, special-shaped connecting frame. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Therefore, 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 present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] A device for simulating the start-up of slope instability under strong earthquake according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0030] like Figure 1-Figure 14 It is shown that a slope instability startup simulation device under strong earthquake according to an embodiment of the present application includes: a model storage mechanism 1, a four-corner vibration mechanism 2, a unilateral vibration mechanism 3 and a coupling amplitude adjustment mechanism 4.

[0031] like Figure 1 and Figure 2 As shown, a model storage mechanism 1, a four-corner vibration mechanism 2, the four-corner vibration mechanism 2 is located at the lower end of the model storage mechanism 1, the four-corner vibration mechanism 2 drives the four corners of the model storage mechanism 1 to vibrate synchronously, a unilateral vibration mechanism 3, the unilateral vibration mechanism 3 is located at the upper end of the four-corner vibration mechanism 2, so that the unilateral vibration mechanism 3 vibrates the front end or the rear end of the model storage mechanism 1, a coupling amplitude adjustment mechanism 4, the coupling 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 four-corner vibration mechanism 2, one end of the unilateral vibration mechanism 3 is driven to vibrate vertically, and the coupling amplitude adjustment mechanism 4 drives one side of the model storage mechanism 1 to vibrate laterally, thereby enabling the unilateral vibration mechanism 3 and the coupling amplitude adjustment mechanism 4 to simultaneously carry out coupled vibration operations on the model storage mechanism 1.

[0032] When in use, the four-corner vibration mechanism 2 at the lower end of the model storage mechanism 1 drives its four corners to vibrate synchronously, and the unilateral vibration mechanism 3 at the upper end of the four-corner vibration mechanism 2 vibrates the front end or rear end of the model storage mechanism 1. The coupling amplitude adjustment mechanism 4 is at the upper end of the unilateral vibration mechanism 3. When the four-corner vibration mechanism 2 moves up and down, it drives one end of the unilateral vibration mechanism 3 to vibrate vertically and makes the coupling amplitude adjustment mechanism 4 drive one side of the model storage mechanism 1 to vibrate laterally, thereby realizing the coupled vibration operation of the unilateral vibration mechanism 3 and the coupling amplitude adjustment mechanism 4 on the model storage mechanism 1.

[0033] like Figure 3 and Figure 4As shown, the model storage mechanism 1 includes a base plate 101 and an experimental model 107, the four corners of the upper surface of the base plate 101 are fixedly connected with supporting legs 102, the upper ends of the supporting legs 102 are fixedly connected with a connecting frame 103, the middle part of the connecting frame 103 is fixedly connected with a connecting plate 104, the four corners of the upper surface of the connecting plate 104 are hingedly connected with vibration springs 105, the upper end of the vibration spring 105 is hingedly connected with a placement plate 106, the experimental model 107 is arranged on the upper surface of the placement plate 106, and a protective frame 108 is fixedly connected to the edge of the upper surface of the connecting frame 103.

[0034] like Figure 5 , Figure 6 and Figure 7As shown, the four-corner vibration mechanism 2 includes a servo motor 201, which is fixedly connected to the middle of the upper surface of the base plate 101, and the output end of the servo motor 201 is fixedly connected to a one-way screw 202, and the lower part of the one-way screw 202 is sleeved with a rectangular one-way slider 203, and the outer walls of the front and rear ends of the rectangular one-way slider 203 are fixedly connected to a supporting concave frame 204, and the end of the supporting concave frame 204 away from the one-way screw 202 is fixedly connected to a first tooth plate 205, and the front and rear ends of the upper surface of the base plate 101 are fixedly connected to a mounting frame 206, and the lower ends of the inner walls of the mounting frame 206 are rotatably connected to a first long rotating rod 207, and the outer walls on both sides of the first long rotating rod 207 are fixedly connected to a first gear cylinder 208, and the first gear plate 205 and the first gear cylinder 208 are meshed with each other, and the two sides of the outer wall of the first long rotating rod 207 are fixedly connected with the first cam 209 respectively, and the inner wall of the mounting frame 206 near the lower end is fixedly connected with the first fixing plate 210, and the plate body of the first fixing plate 210 is fixedly connected with the first telescopic cover 211, and the first telescopic cover 211 is slidably connected with the first slide plate 212 inside, and the edge of the top of the first telescopic cover 211 is fixedly connected with a plurality of first reset short springs 213, and the lower ends of the first reset short springs 213 are fixedly connected with the upper surface of the first slide plate 212, and the middle part of the lower surface of the first slide plate 212 is fixedly connected with the first circular reset block 214, and the middle part of the upper surface of the first slide plate 212 is fixedly connected with the second lifting rod 222, and the upper end of the second lifting rod 222 extends to the first The upper part of the telescopic cover 211 is fixedly connected with an intermediate frame 215, and the middle part of the upper end of the intermediate frame 215 is fixedly connected with a first lifting rod 219. The two sides of the front end and the rear end of the connecting plate 104 are respectively fixedly connected with a support tube 216, and the lower end of the support tube 216 is slidably connected with a support slide 217. The lower surface of the support slide 217 is fixedly connected with a support rod 218, and the lower end of the support rod 218 extends to the lower part of the support tube 216. The first lifting rod 219 is slidably connected inside the lower end of the support rod 218, and the upper end of the support slide 217 is fixedly connected with a lifting frame 220. A lifting box 221 is fixedly connected to the lifting frame 220 on one side close to the middle part of the connecting plate 104. The upper end of the lifting box 221 is in contact with the lower surface of the placement plate 106. During the rotation of the wheel 209, it cooperates with the first circular reset block 214, so that the first circular reset block 214 lifts the first slide plate 212, the second lifting rod 222 and the middle frame 215 upward. Specifically, when it is necessary to perform synchronous lifting and vibration on the four corners of the experimental model 107, the servo motor 201 is started to rotate the one-way screw 202. At this time, the rectangular one-way slider 203 will drive the supporting concave frame 204 and the first tooth plate 205 to move upward. At this time, the movement of the first tooth plate 205 will drive the first gear 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.

[0035] like Figure 8 , Fig. 9 and Fig.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.

[0036] like Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, the coupling amplitude adjustment mechanism 4 includes a supporting rectangular frame 401, the supporting rectangular frame 401 is fixedly connected to the outer wall of one side of the rectangular one-way slider 203, the outer wall of one side of the supporting rectangular frame 401 is fixedly connected to the second tooth plate 402, one side of the middle upper surface of the bottom plate 101 is fixedly connected to an assembly frame 403, the inner wall of the assembly frame 403 near the middle is rotatably connected to a short rotating rod 404, the outer wall of the short rotating rod 404 is fixedly connected to a third gear cylinder 405, one side of the middle upper surface of the connecting plate 104 is rotatably connected to a transmission rod 406, the outer walls of the front ends of the transmission rod 406 and the short rotating rod 404 are both fixedly connected to a transmission wheel 407, the outer wall of the transmission wheel 407 is sleeved with a toothed belt 408, and the outer wall of the transmission rod 406 near the front end is fixedly connected to a third cam 409, 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. The outer wall of the rear end of the transmission rod 406 is provided with a one-way screw sleeve 411, and the outer wall of the one-way screw sleeve 411 is provided with a circular one-way slider 412. The lower surface of the circular one-way slider 412 is fixedly connected with a special-shaped connecting frame 425, and the inner wall of the rear end lifting box 221 near the lower end is fixedly connected with a limited position frame 413, and the inner part of the limited position frame 413 is slidably connected with an adjusting plate 414, and the upper end of the adjusting plate 414 is fixedly connected with a vibration round table 415, and the lower surface of the adjusting plate 414 is fixedly connected with a sliding plate 417, and the lower end of the sliding plate 417 is fixedly connected with a first lifting round table 418. The two sides of the front end of the lower surface of the lifting frame 220 are respectively fixedly connected to the limited long plate 424, and the front end of the limited long plate 424 is slidably connected to the limited slide 419. The lower part of the adjacent end of the limiting slide 419 is fixedly connected with a T-shaped plate 420, and the upper surface of the T-shaped plate 420 is fixedly connected with a second lifting round table 421. The outer wall of the rear end of the special-shaped connecting frame 425 is fixedly connected with a push plate 422. The outer wall of the rear end of the push plate 422 fits with the outer wall of the front end of the T-shaped plate 420. The middle part of the outer wall of the rear end of the T-shaped plate 420 is fixedly connected with a reset spring 423. The outer wall of the rear end of the reset 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 tooth plate 402, it meshes with the third tooth cylinder 405. The lower surface of the vibrating round table 415 A return spring 416 is fixedly connected to both sides, and the lower end of the return spring 416 is fixedly connected to the upper surface of the limit frame 413. Specifically, when the staff needs to couple the vibration of the experimental model 107, when the first tooth plate 205 at the rear end moves to the position of the second tooth cylinder 303 at the rear end, the second tooth plate 402 will also move synchronously to the position of the third tooth cylinder 405. The meshing start and end time of the first tooth plate 205 at the rear end and the second tooth cylinder 303 at the rear end are synchronized with the meshing process of the second tooth plate 402 and the third tooth cylinder 405. At this time, the meshing of the first tooth plate 205 at the rear end and the second tooth cylinder 303 at the rear end will drive the third long rotating rod 302 to rotate, and 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 lift it upward, thereby driving the second slide plate 307, the third lifting 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, and then the positioning plate 311 will synchronously drive the support rod 218 to move upward during the rising process. At this time, the support rod 218 again drives the support slide 217, the lifting frame 220 and the lifting box 221 to move upward, applying a unilateral vibration force to the rear end of the placement plate 106. At the same time, the meshing of the second tooth plate 402 and the third tooth cylinder 405 drives the short rotating rod 404 to rotate, and through the transmission wheel 407 and the toothed belt 4 08 drives the transmission rod 406 to rotate. 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, so that the placement plate 106 produces 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 lifting table 421 on the T-shaped plate 420 interacts with the first lifting table 418. At this time, during the movement of the T-shaped plate 420, the second lifting table 421 is in contact with and separated from the first lifting table 418, and the expansion and contraction of the reset fine spring 416 are used to change the height of the vibration table 415. The position of the degree is adjusted, and then the size and direction of the force acting on the placement plate 106 are adjusted to achieve the adjustment of the vibration amplitude and frequency. Among them, by starting the servo motor 201, the rectangular one-way slider 203 drives the supporting concave frame 204 and the supporting rectangular frame 401 to move up and down. First, it can accurately simulate the synchronous jacking vibration of the four corners of the experimental model 107, the single front end unilateral vibration, and the complex coupled vibration and other modes, so as to accurately simulate the various stress conditions that the slope may encounter in the actual strong earthquake. Second, the vibration mode can be switched only by controlling the steering and start and stop of the servo motor 201, so that the experimenter can quickly switch the synchronous jacking vibration of the four corners, the single front end unilateral vibration, and the complex coupled vibration without complicated equipment debugging or mechanical structure adjustment. The switching between multiple modes such as the unilateral vibration mechanism 3 and the coupled vibration greatly saves the experimental preparation time and improves the experimental efficiency. Thirdly, 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 unilateral vibration and 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 in which the experimental model 107 is located highly close to the actual environment. Fourthly, when the unilateral vibration mechanism 3 vibrates vertically, the vibration truncated table 415 of the coupling amplitude adjustment mechanism 4 applies an upward lifting force to the placement plate 106 at multiple positions to change its force distribution. This not only creates a complex and real earthquake scene, but also simulates the superimposed small earthquake waves in the large amplitude scenario, which effectively improves the accuracy of the simulation experiment.

[0037] Specifically, the working principle of the slope instability startup simulation device under the action of a strong earthquake is as follows: when performing a slope instability startup simulation, first determine the type of vibration to be simulated. When it is necessary to perform synchronous lifting vibration on the four corners of the experimental model 107, start the servo motor 201 to rotate the one-way screw 202. At this time, the rectangular one-way slider 203 will drive the supporting concave frame 204 and the first tooth plate 205 to move upward. At this time, the movement of the first tooth plate 205 will drive the first gear 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 be lifted upward. The first circular reset block 214 drives 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 cycle is repeated. The rotation direction of the complex servo motor 201 is used to realize the synchronous lifting vibration of the four corners of the model storage mechanism 1. When the staff needs to couple the experimental model 107 with vibration, when the first tooth plate 205 at the rear end moves to the position of the second tooth cylinder 303 at the rear end, the second tooth plate 402 will also move synchronously to the position of the third tooth cylinder 405. The meshing start and end time of the first tooth plate 205 at the rear end and the second tooth cylinder 303 at the rear end are synchronized with the meshing process of the second tooth plate 402 and the third tooth cylinder 405. At this time, the meshing of the first tooth plate 205 at the rear end and the second tooth 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, and the rotation of the second cam 304 will be synchronized with the corresponding The second circular reset block 310 contacts and lifts upward, thereby driving the second slide plate 307, the third lifting 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, and then the positioning plate 311 will synchronously drive the support rod 218 to move upward during the rising process. At this time, the support rod 218 drives the support slide 217, the lifting frame 220 and the lifting 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 of the second tooth plate 402 and the third tooth 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 the front end cooperates with the convex vibration plate 410 to apply a lateral vibration force to the placement plate 106, so that the placement plate 106 generates 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, and 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 table 421 on the T-shaped plate 420 interacts with the first lifting table 418. At this time, during the movement of the T-shaped plate 420, the second lifting table 421 is used to lift the T-shaped plate 420. 21 contacts and separates with the first lifting truncated platform 418, and cooperates with the expansion and contraction of the resetting thin spring 416 to change the height position of the vibration truncated platform 415, thereby adjusting the magnitude and direction of the force acting 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 the rear end unilateral vibration force and the lateral vibration force. The experimental model 107 is in a complex vibration environment. At the same time, in the process of changing the height position of the vibration truncated platform 415, the placement plate 106 can be continuously adjusted. The multiple positions of the experimental model 107 are provided with an upward thrust force, and thus this complex force change and dynamic adjustment process can accurately simulate the multi-directional, multi-frequency and mutually coupled vibration impacts that the slope is subjected to in the actual strong earthquake scene, and effectively improve the accuracy of the experiment. When it is necessary to conduct a simulation experiment 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 supporting concave frame 204 and the first tooth plate 205 to move upward until they are meshed with the second tooth cylinder 303 at the front end, at which time the second long rotating rod 301 at the front end is driven to rotate, and the second cam 304 is also rotated during the rotation of the second long rotating rod 301, so that the second cam 304 is aligned with the corresponding second circular reset block 303, 10 contacts and acts, driving the relevant components to produce unilateral vibration action, such as making the second slide plate 307, the third lifting rod 309 and the positioning plate 311 move according to the corresponding mechanism, which will apply an upward lifting force to the front end of the placement plate 106, so that the front end of the placement plate 106 is lifted, realizing the simulated vibration of the single front end of the experimental model 107. When the second gear cylinder 303 at the front end is not engaged with the first gear plate 205 at the front end, the servo motor 201 is reversely started again to make the first gear plate 205 move downward, which will again apply an upward lifting force to the front end of the placement plate 106. In this way, a stable periodic unilateral front end vibration can be formed, accurately simulating the force condition of the front end of the experimental model 107 under specific vibration conditions.

[0038] It should be noted that the specific model and specifications of the servo motor 201 need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0039] The power supply and principle of the servo motor 201 are clear to those skilled in the art and will not be described in detail here.

[0040] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A device for simulating the instability of slopes under strong earthquakes, characterized in that: include: Model storage mechanism (1); A four-corner vibration mechanism (2), the four-corner vibration mechanism (2) being located at the lower end of the model storage mechanism (1), the four-corner vibration mechanism (2) driving the four corners of the model storage mechanism (1) to vibrate synchronously; A unilateral vibration mechanism (3), the unilateral vibration mechanism (3) being located at the upper end of the four-corner vibration mechanism (2), so that the unilateral vibration mechanism (3) vibrates the front end or the rear end of the model storage mechanism (1); A coupling amplitude adjustment mechanism (4), wherein the coupling amplitude adjustment mechanism (4) is located at the upper end of the unilateral vibration mechanism (3), and during the up and down reciprocating movement of the four-corner vibration mechanism (2), one end of the unilateral vibration mechanism (3) is driven to vibrate vertically, and the coupling amplitude adjustment mechanism (4) drives one side of the model storage mechanism (1) to vibrate horizontally, thereby enabling the unilateral vibration mechanism (3) and the coupling amplitude adjustment mechanism (4) to simultaneously perform a coupled vibration operation on the model storage mechanism (1).

2. The device for simulating the instability of slopes under strong earthquakes according to claim 1 is characterized in that: The model storage mechanism (1) comprises a base plate (101) and an experimental model (107); the four corners of the upper surface of the base plate (101) are fixedly connected to support legs (102); the upper ends of the support legs (102) are fixedly connected to a connection frame (103); the middle of the connection frame (103) is fixedly connected to a connection plate (104); the four corners of the upper surface of the connection plate (104) are hingedly connected to vibration springs (105); the upper end of the vibration spring (105) is hingedly connected to a placement plate (106); and the experimental model (107) is arranged on the upper surface of the placement plate (106).

3. The device for simulating the instability of slopes under strong earthquakes according to claim 2 is characterized in that: A protective frame (108) is fixedly connected to the edge of the upper surface of the connection frame (103).

4. The device for simulating the start-up of slope instability under strong earthquake according to claim 2 is characterized in that: The four-corner vibration mechanism (2) comprises a servo motor (201), the servo motor (201) being fixedly connected to the middle portion of the upper surface of the bottom plate (101), the output end of the servo motor (201) being fixedly connected to a one-way screw (202), the lower portion of the one-way screw (202) being sleeved with a rectangular one-way slider (203), the outer walls of the front and rear ends of the rectangular one-way slider (203) being fixedly connected to a supporting concave frame (204), the supporting concave frame (204) being away from the one-way screw (202). The first tooth plate (205) is fixedly connected to the first end of the bottom plate (101); the front end and the rear end of the upper surface of the bottom plate (101) are fixedly connected to the mounting frame (206); the lower end of the inner wall of the mounting frame (206) is rotatably connected to the first long rotating rod (207); the outer walls on both sides of the first long rotating rod (207) are fixedly connected to the first tooth cylinder (208); the first tooth plate (205) and the first tooth cylinder (208) are meshed with each other; and the outer walls of the first long rotating rod (207) are respectively fixedly connected to the first cam (209); A first fixing plate (210) is fixedly connected to the inner wall near the lower end of the installation frame (206); a first telescopic cover (211) is fixedly connected to the plate body of the first fixing plate (210); a first slide plate (212) is slidably connected to the interior of the first telescopic cover (211); a plurality of first short return springs (213) are fixedly connected to the edge of the inner top of the first telescopic cover (211); the lower ends of the first short return springs (213) are fixedly connected to the upper surface of the first slide plate (212); a first circular return block (214) is fixedly connected to the middle of the lower surface of the first slide plate (212); a second lifting rod (222) is fixedly connected to the middle of the upper surface of the first slide plate (212); the upper end of the second lifting rod (222) extends to the upper part of the first telescopic cover (211) and is fixedly connected to the middle frame (215); the middle of the upper end of the middle frame (215) is fixedly connected to the first lifting rod (219); The front and rear ends of the connecting plate (104) are respectively fixedly connected to support tubes (216), the lower end of the support tube (216) is slidably connected to a support slide (217), the lower surface of the support slide (217) is fixedly connected to a support rod (218), the lower end of the support rod (218) extends to the lower part of the support tube (216), the first lifting rod (219) is slidably connected inside the lower end of the support rod (218), the upper end of the support slide (217) is fixedly connected to a lifting frame (220), the lifting frame (220) is fixedly connected to a lifting box (221) on one side close to the middle of the connecting plate (104), and the upper end of the lifting box (221) is in contact with the lower surface of the placement plate (106).

5. The device for simulating the start-up of slope instability under strong earthquake according to claim 4 is characterized in that: During the rotation of the first cam (209), the first cam cooperates with the first circular reset block (214), so that the first circular reset block (214) lifts the first slide plate (212), the second lifting rod (222) and the middle frame (215) upwards.

6. The device for simulating the start-up of slope instability under strong earthquake according to claim 4 is characterized in that: The unilateral vibration mechanism (3) comprises a second long rotating rod (301) and a third long rotating rod (302), wherein the second long rotating rod (301) is rotatably connected to the upper end of the inner wall of the front installation frame (206), and the third long rotating rod (302) is rotatably connected to the middle of the inner wall of the rear installation 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), and the outer walls on both sides of the second long rotating rod (301) and the third long rotating rod (302) are fixedly connected to the second gear cylinder (303). ), the first tooth plate (205) at the rear end meshes with the second tooth cylinder (303) at the rear end during the upward movement, the first tooth plate (205) at the front end meshes with the second tooth cylinder (303) at the front end during the upward movement, the outer walls of the second long rotating rod (301) and the third long rotating rod (302) near the middle are fixedly connected to the second cam (304), the upper part of the inner wall of the installation frame (206) is fixedly connected to the second fixing plate (305), and the plate body of the second fixing plate (305) is fixedly connected to the second telescopic cover (306); A second slide plate (307) is slidably connected to the interior of the second telescopic cover (306); a plurality of second short return springs (308) are fixedly connected to the edge of the inner top of the second telescopic cover (306); the lower ends of the second short return springs (308) are fixedly connected to the upper surface of the second slide plate (307); a second circular return block (310) is fixedly connected to the middle of the lower surface of the second slide plate (307); a third lifting rod (309) is fixedly connected to the middle of the upper surface of the second slide plate (307); the upper ends of the third lifting rods (309) are fixedly connected to positioning plates (311); both sides of the positioning plates (311) are slidably connected to the outer wall of the support rod (218); a limiting ring (312) is fixedly connected to the middle of the outer wall of the support rod (218); the lower surface of the limiting ring (312) is in contact with the upper surface of the positioning plate (311).

7. The device for simulating the start-up of slope instability under strong earthquake according to claim 4 is characterized in that: The second fixing plate (305) at the front end is located at the upper end of the second long rotating rod (301), and the second fixing plate (305) at the rear end is located at the upper end of the third long rotating rod (302).

8. The device for simulating the start-up of slope instability under strong earthquake according to claim 4 is characterized in that: The coupling amplitude adjustment mechanism (4) comprises a supporting rectangular frame (401), the supporting rectangular frame (401) being fixedly connected to the outer wall of one side of the rectangular one-way slider (203), the outer wall of one side of the supporting rectangular frame (401) being fixedly connected to a second tooth plate (402), one side of the middle upper surface of the bottom plate (101) being fixedly connected to an assembly frame (403), the inner wall of the assembly frame (403) close to the middle being rotatably connected to a short rotating rod (404), the outer wall of the short rotating rod (404) being fixedly connected to a third tooth cylinder (405), the connecting A transmission rod (406) is rotatably connected to one side of the upper surface of the middle portion of the plate (104); the outer walls of the front ends of the transmission rod (406) and the short rotating rod (404) are fixedly connected to a transmission wheel (407); the outer wall of the transmission wheel (407) is sleeved with a toothed belt (408); 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 portion of the lower surface of the placement plate (106); and the third cam (409) cooperates with the convex vibration plate (410) during rotation; The outer wall of the rear end of the transmission rod (406) is provided with a one-way screw sleeve (411), the outer wall of the one-way screw sleeve (411) is sleeved with a circular one-way slider (412), the lower surface of the circular one-way slider (412) is fixedly connected to a special-shaped connecting frame (425), the inner wall of the rear end of the lifting box (221) close to the lower end is fixedly connected to a limit frame (413), the inner part of the limit frame (413) is slidably connected to an adjustment plate (414), the upper end of the adjustment plate (414) is fixedly connected to a vibration round table (415), the lower surface of the adjustment plate (414) is fixedly connected to a sliding plate (417), the lower end of the sliding plate (417) is fixedly connected to a first lifting round table (418), the lifting frame (220) The two sides of the front end of the lower surface are respectively fixedly connected to the limit long plates (424), the front ends of the limit long plates (424) are slidably connected to the limit slide (419), the lower part of the adjacent end of the limit slide (419) is fixedly connected to the T-shaped plate (420), the upper surface of the T-shaped plate (420) is fixedly connected to the second lifting table (421), the outer wall of the rear end of the special-shaped connecting frame (425) is fixedly connected to the push plate (422), the outer wall of the rear end of the push plate (422) is fitted with the outer wall of the front end of the T-shaped plate (420), the middle part of the outer wall of the rear end of the T-shaped plate (420) is fixedly connected to the return spring (423), and the rear end of the return spring (423) is fixedly connected to the outer wall of the front end of the support tube (216).

9. The device for simulating the start-up of slope instability under strong earthquake according to claim 8, characterized in that: The second tooth plate (402) meshes with the third tooth cylinder (405) during the process of moving upwards.

10. The device for simulating the start-up of slope instability under strong earthquake according to claim 8, characterized in that: The two sides of the lower surface of the vibration round table (415) are respectively fixedly connected with a return spring (416), and the lower end of the return spring (416) is fixedly connected to the upper surface of the limit frame (413).

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