Portable earthquake simulation demonstration device

Abstract

The invention discloses a portable simulated earthquake demonstration device, which comprises a simulated motion device, an information acquisition device and a control device, and is characterized in that the simulated motion device is used for simulating earthquake motion, the information acquisition device is arranged on the side of the simulated motion device, and the information acquisition device acquires information of the simulated motion device and controls the simulated motion device to move. The information acquisition device acquires information and transmits the information to the control device, the control device receives the information from the information acquisition device, processes the information, transmits the processed information to the simulation motion device and controls the simulation motion device to move, and the simulation motion device, the information acquisition device and the control device are connected through a connecting assembly. The earthquake simulation demonstration device and the control device are carried in a split mode, the problem that an existing demonstration device cannot simulate the vibration effect of acceleration of different frequencies in an actual earthquake is solved through built-in different types of earthquake waves, the earthquake simulation demonstration device can serve as an earthquake disaster demonstration device or an earthquake prevention and vibration reduction product demonstration device, and the earthquake simulation demonstration device is convenient to use. And beneficial help is provided for disaster prevention and reduction and earthquake-resistant teaching and display.

Description

Technical Field

[0001] The invention relates to the technical field of earthquake demonstration devices, and in particular to a portable simulated earthquake demonstration device. Background Art

[0002] Earthquakes, also known as ground motions or seismic tremors, are vibrations caused by violent movements of the earth's crust. During an earthquake, a natural phenomenon called "seismic waves" is produced. This phenomenon is caused by the constant movement of the plates on the earth. When the plates squeeze and collide with each other, the edges and interiors of the plates will shift and rupture, which will then trigger an earthquake. Earthquakes occur very frequently in my country, often causing huge property losses and heartbreaking human sacrifices in the disaster areas. Therefore, devices such as seismometers and earthquake simulation devices were born. These devices can not only monitor earthquakes, but also help people understand the causes of earthquakes, popularize earthquake science knowledge, and provide useful help for disaster prevention and reduction, earthquake resistance teaching and demonstrations, thereby improving the earthquake prevention and reduction capabilities of the entire society.

[0003] Almost all of the existing vibration devices for simulating earthquakes used in popular science displays use cams to drive display panels to simulate earthquake movements. The cams are often driven manually or by motors. Such vibration devices can only simply simulate reciprocating motions of a specified frequency, but cannot simulate the vibration effects of accelerations of different frequencies in actual earthquakes, nor can they simulate the actual destruction scenes of exhibits caused by earthquake waves. The display effect is poor and it is easy to mislead the audience's understanding of earthquake waves. In addition, the simulated earthquake device is difficult to recover after a single earthquake simulation, and the preparation time for repeated simulations is long, resulting in low simulation efficiency in the popular science education process. Summary of the invention

[0004] In order to solve the problems that earthquake simulation demonstration devices in the prior art can only perform simple simulation of reciprocating motion of a specified frequency, cannot simulate the vibration effects of different frequency accelerations included in the actual earthquake effects, cannot simulate the actual destruction scenes of horizontal earthquake waves on exhibits, are difficult to recover after a single earthquake simulation, and have a long preparation time for repeated simulations, the present invention proposes a portable simulated earthquake demonstration device that can be used as an earthquake disaster demonstration device or a demonstration device for earthquake prevention and vibration reduction products.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A portable simulated earthquake demonstration device comprises a simulated motion device, an information collection device and a control device, wherein the simulated motion device is used to simulate earthquake motion, the control device is arranged next to the simulated motion device, an information collection device is arranged on the side of the simulated motion device, the information collection device collects information of the simulated motion device and transmits it to the control device, the control device receives the information from the information collection device, transmits it to the simulated motion device after processing, and controls the simulated motion device to move, and the simulated motion device, the information collection device and the control device are connected via a connecting component.

[0006] Preferably, the simulated motion device includes a fixed platform, a linear motor and a simulated earthquake platform plate, the linear motor includes a linear motor stator and a linear motor mover, the main body of the fixed platform is in the shape of an elongated strip, and a groove is arranged on the top surface thereof, the linear motor stator is fixedly arranged in the groove, linear motor guide rails are fixedly arranged on both sides of the groove, the linear motor guide rails are located on the sides of the linear motor stator, a slider matching the linear motor guide rails is arranged in the track of the linear motor guide rails, a linear motor mover is fixed above the slider, the linear motor mover moves along the linear motor guide rails driven by the information acquisition device, the slider provides upper support for the linear motor mover, a simulated earthquake platform plate is fixed on the top of the linear motor mover, the surface of the simulated earthquake platform plate is provided with equally spaced fixing holes, and the simulated earthquake platform plate fixes demonstration items through the fixing holes.

[0007] Preferably, a protective plate is installed above the stator of the linear motor, sealing plates are provided at both ends of the stator of the linear motor, and a safety buffer component for protecting the linear motor is installed on the inner side of the sealing plate.

[0008] Preferably, the information collection device includes a photoelectric limit sensor, a photoelectric limit sensor trigger and a magnetic grating displacement sensor. The photoelectric limit sensor is provided in two sets, which are respectively arranged at the two ends of the design stroke of the linear motor mover, that is, the sides of the fixed platform corresponding to the two ends of the linear motor guide rail; the photoelectric limit sensor trigger is arranged on the side of the linear motor mover and moves synchronously with the linear motor mover. The photoelectric limit sensor and the photoelectric limit sensor trigger are both arranged on the same side of the fixed platform, and the photoelectric limit sensor trigger stops moving when it touches the photoelectric limit sensor; the magnetic grating displacement sensor is arranged on the side of the fixed platform, which is used to feedback the real-time position of the linear motor mover and provide a verification basis for the linear motor mover to execute the command of the control device.

[0009] Preferably, the control device includes a controller housing, a touch screen, a servo drive, a PLC controller and a power pack. The controller housing is a box structure, and its top cover is movably connected to the box. The servo drive is located at the inner bottom of the controller housing. The PLC controller and the power pack are arranged on the side of the servo drive, and a touch screen is arranged on the top. The touch screen is provided with a connection port for connecting other components. The servo drive is connected to the simulation motion device, the PLC controller is connected to the information collection device, and the power pack is connected to the touch screen, the servo drive, and the PLC controller to provide power for each device.

[0010] Preferably, a hole having a size corresponding to the touch screen is provided on the top cover of the controller housing, and buckles are provided around the hole, and the touch screen is fixed to the hole of the controller housing by the buckles.

[0011] Preferably, the connecting component includes a wire harness drag chain and a drag chain bracket. The wire harness drag chain is arranged on the side of the fixed platform and has a U-shaped cross-section. A magnetic grating displacement sensor is arranged above it and a drag chain bracket is arranged below it. The drag chain bracket is in the shape of a long plate and is used to support the wire harness drag chain. The photoelectric limit sensor, magnetic grating displacement sensor and cables on the servo drive are connected to the control device via the wire harness drag chain.

[0012] The beneficial effects of the present invention are: 1. A portable simulated earthquake demonstration device of the present invention can solve the problem that the existing demonstration device cannot simulate the vibration effects of different frequency accelerations in actual earthquakes by setting different types of seismic waves in the control device and playing after selecting the earthquake acceleration amplitude. The device can be quickly reset by clicking the reset button on the touch screen.

[0013] 2. A portable simulated earthquake demonstration device of the present invention connects the simulated earthquake demonstration device and the control device through a connecting component when in use, and can enter a working state by turning on the power without additional debugging work, thereby realizing the separate carrying of the simulated earthquake demonstration device and the control device. The setting of the U-shaped harness drag chain improves the safety of the connection, so that the connection joint will not loosen or fall off due to the vibration of the device.

[0014] 3. A portable simulated earthquake demonstration device of the present invention has a slider and a linear motor guide rail that are self-lubricating and maintenance-free, which can not only provide high-precision guiding for the movement of the linear motor mover, but also provide high-load-bearing support for the simulated earthquake platform plate, thereby ensuring the reliability and safety of the device throughout its life cycle.

[0015] 4. A portable simulated earthquake demonstration device of the present invention can complete the demonstration of the set working conditions without any operation after the device is started, which solves the problem that traditional demonstration devices require manual operation, allowing the speaker to fully devote his energy to explaining the items on the simulated earthquake platform board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a portable earthquake simulation demonstration device proposed by the present invention; Figure 2 A front view of a portable earthquake simulation demonstration device proposed by the present invention; Figure 3 A top view of a simulated motion device of a portable simulated earthquake demonstration device proposed by the present invention; Figure 4 A side view of a simulated motion device of a portable simulated earthquake demonstration device proposed by the present invention; Figure 5 A top view of the external structure of a control device of a portable earthquake simulation demonstration device proposed by the present invention; Figure 6 A top view of the internal structure of a control device of a portable simulated earthquake demonstration device proposed by the present invention.

[0017] Figure numerals: 1. Simulated motion device; 101. Fixed platform; 104. Simulated earthquake platform plate; 105. Linear motor guide rail; 106. Slider; 107. Mounting hole; 108. Protective plate; 109. Safety buffer component; 110. Sealing plate; 111. Fixed hole; 2. Information acquisition device; 201. Photoelectric limit sensor; 202. Photoelectric limit sensor trigger; 203. Magnetic grating displacement sensor; 3. Control device; 301. Controller housing; 302. Touch screen; 303. Servo drive; 304. PLC controller; 305. Power pack; 4. Connection component; 401. Wiring harness drag chain; 402. Drag chain bracket. DETAILED DESCRIPTION

[0018] Hereinafter, an embodiment of a portable simulated earthquake demonstration device of the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are explanatory and exemplary, and should not be interpreted as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacements and modifications to the embodiments described herein.

[0019] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "horizontal", "vertical", "upright", "oblique", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not used to limit the scope of the present invention. Figure 1-6 , the preferred embodiments of the present invention are further described in detail: A portable earthquake simulation demonstration device, such as Figure 1-6 As shown, it includes a simulation motion device 1, an information collection device 2 and a control device 3. The simulation motion device 1 is used to simulate earthquake motion. The control device 3 is arranged next to the simulation motion device 1. The information collection device 2 is arranged on the side of the simulation motion device 1. The information collection device 2 collects information of the simulation motion device 1 and transmits it to the control device 3. The control device 3 receives the information from the information collection device 2, transmits it to the simulation motion device 1 after processing, and controls the simulation motion device 1 to move. The simulation motion device 1, the information collection device 2 and the control device 3 are connected via a connecting component 4.

[0022] In one embodiment, the simulated motion device 1 includes a fixed platform 101, a linear motor and a simulated earthquake platform plate 104. The linear motor includes a linear motor stator and a linear motor mover. The main body of the fixed platform 101 is rectangular, and a groove is provided in the middle of the top surface thereof. The linear motor stator is fixed in the groove. The linear motor stator adopts a permanent magnet bar group. Positioning holes are evenly arranged on both sides of the groove. A linear motor guide rail 105 is fixed above the positioning hole. The linear motor guide rail 105 is located on the side of the linear motor stator. A slider 106 matching it is provided in the track of the linear motor guide rail 105, and a linear motor mover is provided above the slider 106. The linear motor mover moves along the linear motor guide rail 105 driven by the information acquisition device 2. The linear motor mover is a combined processing transition piece. The bottom of the linear motor mover is evenly provided with mounting holes 107, and the mounting holes 107 are used to fix the slider 106 matching the linear motor guide rail 105. The top of the linear motor mover 103 is evenly provided with mounting holes 107, and the mounting holes 107 are used to fix the simulated earthquake platform plate 104. Such a setting can transmit the displacement driving force of the motor to the upper part of the simulated earthquake platform plate 104 through the linear motor mover 103. In order to better protect the linear motor stator, the upper part of the linear motor stator A protective plate 108 is installed, and the protective plate 108 is made of aluminum alloy to prevent dust or small objects from falling in. Closing plates 110 are set at both ends of the linear motor stator to protect the linear motor mover. In order to better protect the linear motor mover, a safety buffer component 109 is also set on the side of the sealing plate 110 close to the linear motor stator. The end of the safety buffer component 109 is made of rubber material with a buffering effect, which can better buffer and protect the linear motor stator; the linear motor guide rail 105 and the matching slider 106 are combined components. The slider 106 uses a ball-type slider, and the setting of the slider 106 can be a linear motor. The mover 103 and the earthquake simulation platform plate 104 provide sufficient upper support. At the same time, since the slider 106 is provided with a ball, when the linear motor mover 103 moves, there is rolling friction between the slider 106 and the linear motor guide rail 105, and the friction force is not greater than 1%. The slider 106 can be arranged in 4 or 6 sets according to the length of the linear motor mover 103 to reduce the deformation of the linear motor mover 103 and provide sufficient support. A micrometer is required to position and install the linear motor guide rail 105. The installation of the linear motor guide rail 105 must meet the accuracy requirements, that is, the flatness is less than 0.1mm / / 500mm, and the parallelism is less than 0.1mm, the length of the linear motor guide rail 105 is not less than "the width of the linear motor mover 103 + 200mm + the distance between the safety zones at both ends of the linear motor mover 103"; the simulated earthquake platform plate 104 is made of alloy material, and the surface is sandblasted, which has the advantages of light weight, high rigidity, and high bearing capacity. The surface of the simulated earthquake platform plate 104 is provided with equally spaced fixing holes 111, and the fixing holes 111 are threaded or countersunk. These fixing holes 111 are used to fix display items or demonstration items, and can accurately show the movement state of the items when an earthquake occurs. This state may be sliding, shaking, dumping or destruction. It should be noted that the weight of the display items or demonstration items should not exceed the bearing capacity of the simulated earthquake platform plate 104, and the size should not exceed the size of the simulated earthquake platform plate 104 table, otherwise it will affect the movement speed and accuracy of the linear motor. .

[0023] Traditional earthquake demonstration devices generally choose screw motors for linear motion. Screw motors convert rotary motion into linear motion by combining a rotating motor with a screw-nut mechanism. Its working principle is that the motor drives the screw to rotate and realizes linear motion through the nut. It has the characteristics of large bearing capacity, but due to the mechanical transmission of the screw and the nut, the accuracy is affected by the screw processing accuracy, backlash, mechanical wear, etc., resulting in low speed and acceleration. Vibration and noise may occur during high-speed motion. The life depends on the material and lubrication conditions, and regular maintenance is required. It is suitable for machine tool feed mechanisms, lifting mechanisms, medical equipment and other occasions that require precise positioning and large driving force. The portable earthquake simulation demonstration device of the present invention adopts a linear motor for linear motion. The linear motor is an electric motor that directly converts electrical energy into linear motion. Compared with the lead screw motor, the intermediate mechanical transmission device is omitted. Its working principle is to generate a linear driving force between the stator and the mover through the principle of electromagnetic induction, and drive the mover to move linearly along the stator through electromagnetic force. When matched with high-precision position feedback (such as a grating ruler), it can achieve nanometer-level positioning accuracy, has high speed, high acceleration response, high motion accuracy, no mechanical transmission parts, low wear, and convenient maintenance. Due to the lack of mechanical contact, the life span is theoretically long and the maintenance requirements are low, but the environment of the motor coil and the magnetic track needs to be kept clean. It is widely used in semiconductor manufacturing equipment, automated production lines, high-precision measurement equipment and other occasions that require high precision and high dynamic performance. For the portable earthquake simulation demonstration device of the present invention, it belongs to a high-end application device with high precision requirements. The use of a linear motor can more accurately realize the interaction between the simulated motion device 1 and the control device 3.

[0024] The information collection device 2 includes a photoelectric limit sensor 201, a photoelectric limit sensor trigger 202 and a magnetic grating displacement sensor 203. The photoelectric limit sensor 201 is provided with two sets, which are respectively arranged at the two ends of the design stroke of the linear motor mover, that is, the sides of the fixed platform 101 corresponding to the two ends of the linear motor guide rail 105. The photoelectric limit sensor trigger 202 is arranged on the side of the linear motor mover 103 and moves synchronously with the linear motor mover 103. When in use, when the photoelectric limit sensor trigger 202 moves and touches the photoelectric limit sensor 201, the system alarms and performs an emergency stop process, or after each group of working conditions is completed, it is used to restore the working zero position when the reset function is run; the magnetic grating displacement sensor 203 is arranged on the side of the fixed platform 101, which is a positioning component of the linear motor mover, used to feedback the real-time position of the linear motor mover, and is a key component for realizing the simulated earthquake function. At the same time, the magnetic grating displacement sensor 203 is also the verification basis for the command issued by the linear motor mover execution control device 3.

[0025] The control device 3 includes a controller housing 301, a touch screen 302, a servo driver 303, a PLC controller 304 and a power supply group 305. The controller housing 301 is a box structure, which is spliced ​​by alloy sprayed steel plates. Its top cover is movably connected to the box, and the connection method can be hinged. The touch screen 302, the servo driver 303, the PLC controller 304 and the power supply group 305 are all arranged inside the controller housing 301. The top cover of the controller housing 301 is provided with a hole of a size corresponding to the touch screen 302, and the hole is provided with a buckle on the side. The touch screen 302 is fixed to the hole of the controller housing 301 by the buckle. The controller housing 301 can be both internal and external. It can provide protection for the electrical equipment inside and can also provide fixed support for the internal servo driver 303, PLC controller 304 and power pack 305; the touch screen 302 is provided with an interface, which is located on the back of the touch screen 302 and is used to connect other components. The touch screen 302 can be used to operate and control the corresponding functions of the simulated motion device 1. The touch screen 302 has two levels of display pages: the first level display page includes the selection of earthquake waveforms, the setting of earthquake acceleration amplitudes, real-time position display, and start and stop buttons. The bottom is also provided with buttons that can realize platform reset and emergency stop functions; the second level display page can set parameters for the simulated motion device 1; the controller shell 301 is also provided with a cable hole for passing the cable. The cable on the servo driver 303 is connected to the simulated motion device 1 through the cable hole on the controller housing 301, providing a driving function for the simulated motion device 1. The cable on the PLC controller 304 is connected to the information acquisition device 2 through the cable hole on the controller housing 301. The PLC controller 304 has a built-in control program for controlling the simulated motion device 1, providing a control function for the simulated motion device 1. The PLC controller 304 is also connected to the touch screen 302, the servo driver 303 and the power supply group 305 through the cable. The PLC controller 304 receives the command input by the touch screen 302, and receives the magnetic grid displacement sensor 203 and the photoelectric limit switch. The sensor 201 provides a feedback signal, and then sends the received instructions and signals to the servo driver 303. The servo driver 303 sends a driving signal to control the simulated motion device 1 in real time, so that the linear motor mover 103 produces a corresponding simulated earthquake motion, and then the simulated earthquake platform plate 104 performs a simulated earthquake motion. The PLC controller 304 has no less than 15 built-in earthquake bands, and these earthquake bands can achieve 0~30Hz servo control, covering the main response frequency band of earthquake waves; the power supply group 305 is connected to all electrical components to supply power to the electrical components, where the electrical components are the touch screen 302, the servo driver 303 and the PLC controller 304.

[0026] The connecting component includes a harness drag chain 401 and a drag chain bracket 402. The harness drag chain 401 is arranged on the side of the fixed platform 101, and has a U-shaped cross-section. A magnetic grating displacement sensor 203 is arranged above it, and a drag chain bracket 402 is arranged below it. The drag chain bracket 402 is in the shape of a long plate. The harness drag chain 401 and the drag chain bracket 402 are combined components. The cables of the photoelectric limit sensor 201 and the magnetic grating displacement sensor 203 are passed through the harness drag chain 401, bent and placed on the drag chain bracket 402, and connected to the control device 3. The harness drag chain 401 provides corresponding flexible protection for the sensor driver cable used by the simulated motion device 1. During the movement of the linear motor mover, the harness drag chain 401 can always keep the cable aligned with the corresponding joint at a specific angle to prevent the cable and the joint from bending and pulling. The drag chain bracket 402 provides support for the harness drag chain 401.

[0027] In order to enable the present invention to simulate earthquake motion more accurately and precisely control the motion of the linear motor, a servo driver 303 and a PLC controller 304 are used to precisely adjust the position, speed and acceleration of the linear motor.

[0028] The PLC controller 304 controls the linear motor of the simulated motion device 1 through an interface or a communication bus, and at the same time connects the magnetic grating displacement sensor 203 and the photoelectric limit sensor 201 to the PLC controller 304 to obtain the position information of the linear motor. The program of the PLC controller 304 can set the acceleration curve and deceleration curve of the linear motor, so as to smoothly control the start and stop of the linear motor. By setting the target position and feedback position of the linear motor, the PLC controller 304 can control the linear motor to move to the specified position, and combine the PID control algorithm to achieve precise positioning. The PLC controller 304 can set the movement step length of each movement of the linear motor, so that the linear motor reaches the final position after multiple steps. By connecting the magnetic grating displacement sensor 203 and the photoelectric limit sensor 201, the PLC controller 304 can obtain the position and speed feedback data of the linear motor, so as to make real-time adjustments to the linear motor.

[0029] The user inputs the target instruction through the touch screen 302, including motion parameters such as target position, speed and acceleration. The PLC controller 304 receives the target instruction from the touch screen 302, and then decomposes the motion target into a series of target positions and speeds according to the target instruction, and plans an ideal trajectory to ensure a smooth trajectory, avoid sudden changes in speed or acceleration, and reduce the impact on the simulated motion device 1. The planned trajectory calculated in real time is then sent to the servo driver 303. The servo driver 303 receives and executes the instructions from the PLC controller 304, controls the output of the current according to the instructions, so that the coil generates electromagnetic force, drives the linear motor mover to move along the direction of the linear motor stator, and at the same time, the servo driver 303 receives feedback from the information acquisition device 2 in real time. The servo driver 303 dynamically adjusts the current or speed according to the feedback error signal to ensure that the linear motor moves closely to the trajectory. At the same time, the PLC controller 304 monitors the motion state of the simulated motion device in real time to ensure that the linear motor can run smoothly and accurately, and adjusts the motion trajectory accordingly.

[0030] When in use, place the fixed platform 101 on a desktop or display table, with the bottom surface placed flat so that it is in close contact with the bottom of the desktop and there is no gap or shaking. Take out the control device 3 and place it on one side of the simulated motion device 1. Connect the cables of the photoelectric limit sensor 201 and the magnetic grid displacement sensor 203 to the external interface of the control device 3, and ensure that the connection is tight; connect the power cord of the control device 3 to a 220V socket, and wait for the system self-check of the control device 3 to end; click the reset button on the touch screen 302 to position the simulated earthquake platform board 104 to the initial zero position; click the name button on the touch screen 302 to select the working condition to be demonstrated, such as a certain For the site category of seismic wave or sine wave, when selecting the seismic wave, click the name of the seismic wave to be played, then click the amplitude setting button, input the amplitude to be demonstrated, and click the start button to start the demonstration process; after the demonstration process is over, click the reset button in the touch screen 302 to complete the positioning of the simulated seismic platform plate 104 to the initial zero position, and after the reset is completed, repeat the operation to demonstrate the next set of working conditions; after use, first disconnect the power cord of the control device 3, then disconnect and release the cables of the photoelectric limit sensor 201 and the magnetic grid displacement sensor 203, store and organize the simulated motion device 1 and the control device 3, and the use is completed.

[0031] A portable earthquake simulation demonstration device of the present invention sets different types of earthquake waves in the control device 3, and plays them after selecting the earthquake acceleration amplitude, which can solve the problem that the existing demonstration device cannot simulate the vibration effects of different frequency accelerations in actual earthquakes. By clicking the reset button on the touch screen 302, the device can be quickly reset; when in use, the simulation motion device 1, the information collection device 2 and the control device 3 are connected through the connecting component 4, and the power is turned on to enter the working state without additional debugging work, thereby realizing the split carrying of the simulation motion device 1 and the control device 3, and the design of the U-shaped harness drag chain 401 The device improves the safety of the connection, so that the connection joints will not loosen or fall off due to the vibration of the device; the slider 106 and the linear motor guide 105 are designed to be self-lubricating and maintenance-free, which can not only provide high-precision guiding for the movement of the linear motor mover, but also provide high-load-bearing support for the simulated earthquake platform plate 104, ensuring the reliability and safety of the device throughout its life cycle; after the device is started, the demonstration of the set working conditions can be completed without any operation, which solves the problem that traditional demonstration devices require manual operation, so that the lecturer can fully devote his energy to explaining the items on the simulated earthquake platform plate 104.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable earthquake simulation demonstration device, characterized in that: The invention comprises a simulated motion device (1), an information collection device (2) and a control device (3), wherein the simulated motion device (1) is used to simulate earthquake motion, the control device (3) is arranged beside the simulated motion device (1), an information collection device (2) is arranged on the side of the simulated motion device (1), the information collection device (2) collects information from the simulated motion device (1) and transmits it to the control device (3), the control device (3) receives the information from the information collection device (2), transmits it to the simulated motion device (1) after processing, and controls the simulated motion device (1) to move, and the simulated motion device (1), the information collection device (2) and the control device (3) are connected via a connecting component (4).

2. A portable earthquake simulation demonstration device according to claim 1, characterized in that: The simulated motion device (1) comprises a fixed platform (101), a linear motor and a simulated earthquake platform plate (104); the linear motor comprises a linear motor stator and a linear motor mover; the fixed platform (101) has a main body in the shape of an elongated strip, a groove is provided on its top surface, the linear motor stator is fixedly provided in the groove, linear motor guide rails (105) are fixedly provided on both sides of the groove, the linear motor guide rails (105) are located on the side of the linear motor stator, and a matching linear motor guide rail (105) is provided in the track of the linear motor guide rail (105). A slider (106) is provided, a linear motor mover is fixed above the slider (106), the linear motor mover moves along the linear motor guide rail (105) under the drive of the information acquisition device (2), the slider (106) provides upper support for the linear motor mover, a simulated earthquake platform plate (104) is fixed on the top of the linear motor mover, the simulated earthquake platform plate (104) is provided with fixing holes (111) at equal intervals on the plate surface, and the simulated earthquake platform plate (104) fixes demonstration objects through the fixing holes (111).

3. A portable earthquake simulation demonstration device according to claim 2, characterized in that: A protective plate (108) is installed above the stator of the linear motor, sealing plates (110) are provided at both ends of the stator of the linear motor, and a safety buffer component (109) for protecting the linear motor is installed inside the sealing plate (110).

4. A portable simulated earthquake demonstration device according to claim 3, characterized in that: The information collection device (2) comprises a photoelectric limit sensor (201), a photoelectric limit sensor trigger (202) and a magnetic grating displacement sensor (203). Two sets of the photoelectric limit sensor (201) are arranged respectively at two ends of the designed travel of the linear motor mover, i.e., on the sides of the fixed platform (101) corresponding to the two ends of the linear motor guide rail (105); the photoelectric limit sensor trigger (202) is arranged on the side of the linear motor mover and moves synchronously with the linear motor mover. The photoelectric limit sensor (201) and the photoelectric limit sensor trigger (202) are both arranged on the same side of the fixed platform (101). The photoelectric limit sensor trigger (202) stops moving when it touches the photoelectric limit sensor (201); the magnetic grating displacement sensor (203) is arranged on the side of the fixed platform (101) and is used to feed back the real-time position of the linear motor mover (103) and provide a verification basis for the linear motor mover to execute the command of the control device (3).

5. A portable earthquake simulation demonstration device according to claim 4, characterized in that: The control device (3) comprises a controller housing (301), a touch screen (302), a servo drive (303), a PLC controller (304) and a power supply group (305); the controller housing (301) is a box structure, and its top cover is movably connected to the box; the servo drive (303) is located at the inner bottom of the controller housing (301); the servo drive (303) is provided with a PLC controller (304) and a power supply group (305) on the side of the servo drive (303); a touch screen (302) is provided on the top; the touch screen (302) is provided with a connection port for connecting other components; the servo drive (303) is connected to the simulated motion device (1); the PLC controller (304) is connected to the information collection device (2); and the power supply group (305) is connected to the touch screen (302), the servo drive (303) and the PLC controller (304) to supply power to each device.

6. A portable earthquake simulation demonstration device according to claim 5, characterized in that: A hole having a size corresponding to the touch screen (302) is provided on the top cover of the controller housing (301), and buckles are provided around the hole, and the touch screen (302) is fixed to the hole of the top cover of the controller housing (301) by means of the buckles.

7. A portable earthquake simulation demonstration device according to claim 6, characterized in that: The connection assembly (4) comprises a wire harness drag chain (401) and a drag chain bracket (402); the wire harness drag chain (401) is arranged on the side of the fixed platform (101) and has a U-shaped cross section; a magnetic grating displacement sensor (203) is arranged above the wire harness drag chain, and a drag chain bracket (402) is arranged below the wire harness drag chain; the drag chain bracket (402) is in the shape of a long plate and is used to support the wire harness drag chain (401); the cables on the photoelectric limit sensor (201), the magnetic grating displacement sensor (203) and the servo driver (303) are connected to the control device (3) via the wire harness drag chain (401).

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