Dam vibration response monitoring device under earthquake action

Abstract

This invention relates to the field of vibration monitoring technology, specifically to a dam vibration response monitoring device under seismic loading. The device includes a dam body with multiple equally spaced detection holes at its upper end. A positioning mechanism is installed within each detection hole, and a vertical rod extends through the positioning mechanism. A pressing mechanism is located at the lower end of the vertical rod, and two movable frames are mounted on the pressing mechanism. The lower end of the vertical rod extends into the detection holes. Multiple mounting slots are equally spaced on both sides of the vertical rod from top to bottom, and a linkage detection mechanism is installed within each mounting slot. This invention ensures that the roller is always in contact with the inner wall of the detection hole, enabling accurate detection of vibration on the inner wall of the detection hole and comprehensive monitoring of changes at the top of the dam. The multi-point detection and multi-point reception improves monitoring quality, facilitating timely detection of dam vibrations caused by seismic loading for preventative measures and to ensure safety.

Description

Technical Field

[0001] This invention relates to the field of vibration monitoring technology, and in particular to a device for monitoring the vibration response of a dam under seismic loading. Background Technology

[0002] The dam strong earthquake monitoring system can comprehensively monitor the impact of earthquakes near reservoir dams on the dam structure. Existing strong earthquake monitoring devices for dams require the installation of multiple sensors at different depths, making the installation of the monitoring devices inconvenient and unable to directly display the monitoring of strong earthquake displacement of the dam body.

[0003] The announcement number CN117908084A discloses a monitoring device and its method for monitoring strong earthquakes in dams. The device places the monitoring and acquisition mechanism in a monitoring well. A horizontal plate is fixedly installed using nuts and original screws. By rotating the connecting shaft, the connecting shaft drives a threaded sleeve through an external threaded pipe. The threaded sleeve pushes a connecting rod, which in turn pushes a retaining plate to move a clamp. The retaining plate pushes the vibration sensor to fit against the inner wall of the monitoring well. During this contact process, a second telescopic rod is subjected to force, which compresses a second spring through a second slider, ensuring that all vibration sensors are in contact with the inner wall of the monitoring well. This enables monitoring of dam vibrations at different depths. Simultaneously, a satellite observation station fixedly installed on the mounting arm of the support frame locates the point, enabling monitoring of dam displacement. This allows for monitoring of strong earthquakes and their impacts, facilitating the prevention of dam anomalies caused by strong earthquakes and reducing the occurrence of disasters.

[0004] The aforementioned technical components can perform detection operations at multiple locations within the monitoring well. However, in actual operation, it cannot be ensured that the detection components fully contact the inner wall of the monitoring well, affecting the quality of the detection and making it impossible to achieve comprehensive detection of the dam body. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dam vibration response monitoring device under seismic loading.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dam vibration response monitoring device under seismic loading includes a dam body. Multiple detection holes are equally spaced at the upper end of the dam body. A positioning mechanism is installed in each detection hole. A vertical rod is inserted through the positioning mechanism. A pressing mechanism is provided at the lower end of the vertical rod. Two moving frames are provided on the pressing mechanism. The lower end of the vertical rod extends into the detection hole. Multiple mounting slots are provided on both sides of the vertical rod at equal intervals from top to bottom. A linkage detection mechanism is provided in the mounting slot. A spring and a first fixing plate are provided on the linkage detection mechanism. Multiple linkage detection mechanisms located on the same side are all installed through the movable frame on the same side. The spring and the movable frame are connected. An adjustment abutment mechanism is provided on the first fixing plate. The upper end of the vertical rod is equipped with a rotating mechanism, on which an infrared sensor emitting component and an infrared sensor receiving component are mounted; the infrared sensor emitting components and infrared sensor receiving components on two adjacent rotating mechanisms are staggered. Multiple inspection holes are set on the dam body in two staggered rows.

[0007] Compared with existing technologies, this invention ensures that the roller is always in contact with the inner wall of the detection hole, enabling accurate detection of vibration of the inner wall of the detection hole and full monitoring of changes at the top of the dam. By using multi-point detection and multi-point reception, the quality of monitoring is improved, which is conducive to timely detection of dam vibration caused by earthquakes, so as to take preventive measures and ensure safety.

[0008] Preferably, the positioning mechanism includes a plug-in disc that extends through the upper end of the detection hole, a ring that is slidably mounted on one end of the plug-in disc that extends into the detection hole, a nut that is fixed on the ring, and a screw that is rotatably sleeved on the plug-in disc, with the lower end of the screw threaded into the nut. The upper end of the ring component is rotatably connected to multiple push rods at equal intervals, and the end of the plug-in plate component located in the detection hole is rotatably connected to multiple rotating rods at equal intervals. The multiple push rods are rotatably connected to the multiple rotating rods respectively.

[0009] Furthermore, by rotating the screw and controlling its rotation direction, the screw can drive the ring to rise and fall relative to the vertical end of the plug-in disc via the nut. In actual operation, positioning pins and other components can be installed on the screw to ensure the screw is properly adjusted. After adjustment, the ring pushes the lower end of the push rod to rise, and the upper end of the push rod and the rotating rod are rotatably connected near the vertical end of the plug-in plate. However, there is a certain tilt angle. That is, by the rise and fall of the ring, the rotating rod can be made to abut against the side wall inside the detection hole and at the same time give the plug-in plate a downward force, which can make the plug-in plate squeeze the sealing gasket to ensure the sealing of the installation.

[0010] Preferably, a sealing gasket is fixed at the lower end of the horizontal end of the plug-in plate, and the sealing gasket abuts against the upper end of the dam body; The diameter of the horizontal end of the plug-in disc is greater than the diameter of the detection hole, and the outer diameter of the vertical end of the plug-in disc is smaller than the diameter of the detection hole.

[0011] Furthermore, the connector plate is composed of a ring and a tube, which are coaxially arranged. The diameter of the ring is larger than the diameter of the detection hole to ensure that it can fully cover the detection hole. The diameter of the ring is smaller than the diameter of the detection hole, so that the ring can be inserted into the detection hole. The sealing gasket ensures a sealing effect. The first fixing plate is fixed inside the connector plate.

[0012] Preferably, the extrusion mechanism includes a pressure rod slidably mounted on the lower end of the vertical rod, the lower end of the pressure rod abutting against the bottom of the detection hole, and two second telescopic rod assemblies fixed on both sides of the lower end of the vertical rod. The two second telescopic rod assemblies are respectively fixedly connected to the lower ends of the two moving frames. Two inclined rods are rotatably connected to both sides of the pressure rod, and the two inclined rods are respectively rotatably connected to the lower ends of the two moving frames.

[0013] Furthermore, when installing the components of this invention into the detection hole, ensure that the lower end of the pressure rod abuts against the bottom of the detection hole so that the upper end of the pressure rod can be pushed into the vertical rod. When the lower end of the pressure rod stops and the vertical rod continues to descend, the inclined rod will deflect, so that the inclined rod can push the moving frame to move away from the vertical rod. At the same time, the moving frame moves smoothly under the guarantee of the second telescopic rod assembly. The moving frame can push the first fixed plate towards the side wall of the detection hole through the action of the spring, so that the first telescopic rod assembly extends, ensuring that the roller abuts against the side wall of the detection hole.

[0014] Preferably, the linkage detection mechanism includes a partition fixed in the middle of the mounting groove, a first telescopic rod assembly fixed on one side of the partition, a first fixing plate fixed to the piston rod end of the first telescopic rod assembly, two swing rods rotatably connected to one side of the first fixing plate, the first telescopic rod assembly located between the two swing rods, an infrared distance detection assembly mounted on one end of the two swing rods, the infrared distance detection assembly being slidably installed in the mounting groove, and the partition located between the infrared distance detection assemblies. The first telescopic rod assembly and two swing rods are disposed within the movable frame on the same side thereon. A spring is sleeved on the first telescopic rod assembly, and the two ends of the spring are respectively fixed to the first fixed plate and the movable frame.

[0015] Furthermore, when the dam vibrates due to an earthquake, the sidewall inside the detection hole will vibrate. This vibration can be transmitted to the roller, then to the first fixed plate via the contact screw, and under the action of the spring, the first telescopic rod assembly will extend or retract. When the first telescopic rod assembly extends or retracts, the position of the first fixed plate moves relative to the partition. When the first fixed plate moves, the angle between the two swing rods on the first fixed plate changes, that is, the distance between the infrared distance detection components changes. The infrared distance detection component consists of an infrared emitting component and an infrared receiving component. The infrared emitting component and the infrared receiving component are rotatably connected to the two swing rods on the same first fixed plate and are slidably installed in the mounting groove. By changing the angle between the two swing rods, the distance between the infrared emitting component and the infrared receiving component changes, and the vibration of the sidewall of the detection hole at that location can be understood.

[0016] Preferably, the adjusting abutment mechanism includes a sliding rod that is slidably mounted on a first fixed plate, one end of the sliding rod being fixed to a second fixed plate, and a roller being rotatably sleeved on one side of the second fixed plate, the roller abutting against the side wall inside the detection hole; The second fixing plate is threaded with an abutting screw, one end of which is rotatably sleeved on the first fixing plate.

[0017] Furthermore, the sliding rod ensures smooth movement of the second fixed plate relative to the first fixed plate, and the contact between the roller and the inner wall of the detection hole facilitates the smooth descent of the component during installation. The roller can rotate to reduce friction after contact with the inner wall of the detection hole. Simultaneously, when vibration occurs in the detection hole due to an earthquake, the force can be transmitted to the second fixed plate through the roller and then to the first fixed plate through the contact screw, so that the first fixed plate can push the first telescopic rod assembly to extend or retract.

[0018] Preferably, the rotating structure includes a rotating shaft rotatably sleeved on the upper end of the vertical rod, the infrared sensing emitting component and the infrared sensing receiving component are mounted on the rotating shaft, and the axes of the infrared sensing emitting component, the infrared sensing receiving component, the rotating shaft and the vertical rod are arranged to overlap. A linkage gear is fixedly mounted on the rotating shaft, a motor assembly is fixed on the vertical rod, and a drive gear is fixed to the end of the output shaft of the motor assembly. The drive gear and the motor assembly mesh with each other.

[0019] Furthermore, the linkage gear and the rotating shaft are coaxially arranged. This coaxial arrangement ensures the stability of the rotation of the infrared sensor emitting component, the infrared sensor receiving component, the rotating shaft, and the linkage gear. In actual production, the infrared sensor emitting component and the infrared sensor receiving component on the upper end of two adjacent rotating shafts are placed in opposite order. That is, the infrared sensor emitting component on one rotating shaft and the infrared sensor receiving component on the adjacent rotating shaft are on the same horizontal line. The infrared light emitted by the infrared sensor emitting component can be received by the infrared sensor emitting component on the adjacent rotating shaft. At the same time, the time information of light emission and light reception can be uploaded so that the host and other equipment in the control room can receive it. The transmission method can be adjusted according to the actual situation by adding wireless or wired transmission components to the components. The distance between the two rotating shafts can be obtained through the above information. When the dam vibrates due to earthquake, the distance between the two rotating shafts will change. By detecting whether this change exists, it can be determined whether the dam has vibrated due to earthquake. The motor assembly consists of components such as a motor, a reducer, a mounting bracket, and control equipment. Its installation, connection, and control are common knowledge in the field and do not need to be explained again.

[0020] Preferably, a protective cover assembly is fixed on the rotating shaft; the inner diameter of the protective cover assembly is D1, and the sum of the diameters of the linkage gear and the drive gear is D2, wherein D1 > D2.

[0021] Furthermore, ensuring that the protective cover assembly can adequately shield the linkage gears, drive gears, and motor components is crucial to prevent rust caused by rain and snow, thus helping to ensure the normal operation of the equipment.

[0022] Preferably, a solar energy conversion component is installed on the upper end of the plug-in plate, and the solar energy conversion component is connected to and powered by the linkage detection mechanism, the infrared sensor emitting component and the infrared sensor receiving component.

[0023] Furthermore, the solar energy conversion module uses existing solar energy to electrical energy equipment, which can convert solar energy into electrical energy. The electrical energy is stored through devices such as batteries, and the stored power is transmitted through corresponding cables to components such as motor components, infrared sensor transmitting components, infrared sensor receiving components, and infrared distance detection components for their operation. The solar energy conversion module and the supporting components, corresponding installation components, and connection schemes between the automation components in this application are all existing technologies. Those skilled in the art can make adaptive adjustments and installations according to the actual specifications and conditions of the equipment.

[0024] Preferably, the diameter of the linkage gear is larger than the diameter of the drive gear.

[0025] Furthermore, by controlling the diameter difference between the linkage gear and the drive gear, the angular velocity of the linkage gear can be made smaller than that of the drive gear, thus slowing down the rotation speed of the shaft. This allows control over the rotation speed of the infrared sensor emitting and receiving components. In actual production, the motor assembly, including the motor and reducer, can reduce the rotation speed of the drive gear, thereby reducing the shaft's rotation speed.

[0026] The beneficial effects of this invention are: 1. By setting two rows of staggered intervals, the range that infrared light can be received can be expanded, so that multiple infrared sensor receiving components can receive the infrared light emitted by one infrared sensor emitting component. For example, in actual growth and preparation, the wavelengths of infrared light emitted by infrared sensor emitting components are different. The infrared sensor receiving components can receive and identify the wavelengths to detect changes in the detection distance and understand the situation at the top of the dam. 2. The infrared spacing detection component consists of an infrared emitting component and an infrared receiving component. The infrared emitting component and the infrared receiving component are rotatably connected to two swing rods on the same first fixed plate and are slidably installed in the mounting groove. By changing the angle between the two swing rods, the distance between the infrared emitting component and the infrared receiving component changes, which can reveal the vibration of the sidewall of the detection hole at that location. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a connection structure diagram of the swing arm and the first telescopic rod assembly in this invention; Figure 3 This is a diagram showing the connection structure between the insert plate and the ring in this invention. Figure 4 Appendix to this invention Figure 1 Enlarged view of point A; Figure 5 Appendix to this invention Figure 1 Enlarged view of point B; Figure 6 This is a structural diagram of the infrared sensing transmitting component and the infrared sensing receiving component in this invention; In the diagram: 1 Dam body, 2 Detection hole, 3 Solar energy conversion component, 4 Protective cover component, 5 Infrared spacing detection component, 6 First telescopic rod component, 7 Swing rod component, 8 First fixing plate, 9 Sliding rod component, 10 Second fixing plate, 11 Sealing gasket, 12 Insertion plate component, 13 Screw component, 14 Nut component, 15 Ring component, 16 Rotating rod, 17 Push rod component, 18 Vertical rod component, 19 Moving frame, 20 Second telescopic rod component, 21 Diagonal rod component, 22 Pressure rod component, 23 Mounting groove, 24 Partition plate component, 25 Spring component, 26 Abutting screw component, 27 Roller component, 28 Infrared sensor transmitting component, 29 Infrared sensor receiving component, 30 Rotating shaft, 31 Linkage gear component, 32 Drive gear component, 33 Motor component. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Reference Figures 1-6 A dam vibration response monitoring device under seismic loading includes a dam body 1. Multiple detection holes 2 are equally spaced at the upper end of the dam body 1, with adjacent detection holes 2 staggered and the distance between adjacent detection holes 2 controlled. When opening the detection holes 2, it is necessary to ensure that it does not affect the dam body. A positioning mechanism is installed inside the detection hole 2, with a vertical rod 18 penetrating through it. The positioning mechanism ensures the firmness of the vertical rod 18. A pressing mechanism is provided at the lower end of the vertical rod 18, with two moving frames 19 on it. The pressing mechanism controls a spring 25 to push a first fixed plate 8 to push a second fixed plate 10 and a roller 27 against the sidewall inside the detection hole 2. Simultaneously, the spring 25 pushes the roller 27 against the sidewall inside the detection hole 2.

[0030] In this embodiment, the lower end of the vertical rod 18 extends into the detection hole 2. Multiple mounting slots 23 are evenly spaced on both sides of the vertical rod 18 from top to bottom. In actual production, multiple mounting slots 23 can be provided around the vertical rod 18 as needed, not just two. By detecting changes in the inner wall of the detection hole 2, it is possible to understand whether the dam experiences vibration under earthquake action. A linkage detection mechanism is provided within the mounting slot 23. The linkage detection mechanism includes a spring 25 and a first fixing plate 8. Multiple linkage detection mechanisms located on the same side are all installed within a moving frame 19 on the same side. The spring 25 and the moving frame 19 are connected. An adjustment contact mechanism is provided on the first fixing plate 8. Adjusting the contact mechanism allows for adjustment of the position of the roller 27 under normal conditions, ensuring that the roller 27 can be inserted into the detection hole 2 and that it contacts the inner wall of the detection hole 2, thus accurately sensing whether vibration has occurred in the inner wall of the detection hole 2.

[0031] In this embodiment, a rotating mechanism is installed at the upper end of the vertical rod 18, and an infrared sensor emitting component 28 and an infrared sensor receiving component 29 are installed on the rotating mechanism. The infrared sensor emitting components 28 and infrared sensor receiving components 29 on two adjacent rotating mechanisms are staggered. Multiple detection holes 2 on the dam body 1 are arranged in two staggered rows. The staggered arrangement of the two rows can expand the range that infrared light can be received, so that multiple infrared sensor receiving components 29 can receive the infrared light emitted by one infrared sensor emitting component 28. For example, in actual growth and preparation, the wavelength of the infrared light emitted by the infrared sensor emitting component 28 is different. The infrared sensor receiving component 29 can receive and identify the wavelength so as to detect the change in the detection distance and understand the situation at the top of the dam.

[0032] In this embodiment, the positioning mechanism includes a plug-in plate 12 that passes through the upper end of the detection hole 2. A ring 15 is slidably mounted on one end of the plug-in plate 12 that extends into the detection hole 2. A nut 14 is fixed on the ring 15. A screw 13 is rotatably sleeved on the plug-in plate 12. The lower end of the screw 13 is threaded into the nut 14. By rotating the screw 13 and controlling the rotation direction of the screw 13, the screw 13 can drive the ring 15 to rise and fall relative to the vertical end of the plug-in plate 12 through the nut 14. In actual operation, positioning pins or other components can be set on the screw 13 to ensure the position of the screw 13 after adjustment. Multiple push rods 17 are rotatably connected at equal intervals to the upper end of the ring 15. Multiple rotating rods 16 are rotatably connected at equal intervals to one end of the plug-in plate 12 located inside the detection hole 2. The multiple push rods 17 are rotatably connected to the multiple rotating rods 16 respectively. After adjustment, the ring 15 pushes the lower end of the push rod 17 to rise. The upper end of the push rod 17 and the rotating rod 16 are rotatably connected near the vertical end of the plug-in plate 12, but there is a certain tilt angle. That is, through the rise and fall of the ring 15, the rotating rod 16 can be made to abut against the side wall inside the detection hole 2 and at the same time give the plug-in plate 12 a downward force, so that the plug-in plate 12 can squeeze the sealing gasket 11 to ensure the sealing of the installation.

[0033] In this embodiment, a sealing gasket 11 is fixed to the lower end of the horizontal end of the plug-in disc 12, and the sealing gasket 11 abuts against the upper end of the dam body 1. The plug-in disc 12 is composed of a ring and a tube, which are coaxially arranged. The diameter of the ring is larger than the diameter of the detection hole 2 to ensure that the detection hole 2 is fully covered. The diameter of the ring 15 is smaller than the diameter of the detection hole 2, allowing the ring 15 to be inserted into the detection hole 2. The sealing gasket 11 ensures a sealing effect. The diameter of the horizontal end of the plug-in plate 12 is larger than the diameter of the detection hole 2, and the outer diameter of the vertical end of the plug-in plate 12 is smaller than the diameter of the detection hole 2; this ensures that the detection hole 2 is sealed.

[0034] In this embodiment, the pressing mechanism includes a pressing rod 22 slidably mounted on the lower end of the vertical rod 18. The lower end of the pressing rod 22 abuts against the bottom of the detection hole 2. Two second telescopic rod assemblies 20 are fixed to both sides of the lower end of the vertical rod 18. The two second telescopic rod assemblies 20 are respectively fixedly connected to the lower ends of the two moving frames 19. Two inclined rods 21 are rotatably connected to both sides of the pressing rod 22. The two inclined rods 21 are respectively rotatably connected to the lower ends of the two moving frames 19. When installing the component of this invention into the detection hole 2, ensure that the lower end of the pressing rod 22 abuts against the bottom of the detection hole 2. The upper end of the pressure bar 22 is inserted into the vertical bar 18. When the lower end of the pressure bar 22 stops, the vertical bar 18 continues to descend, causing the inclined bar 21 to deflect. This allows the inclined bar 21 to push the moving frame 19 away from the vertical bar 18. At the same time, the moving frame 19 moves smoothly under the protection of the second telescopic rod assembly 20. The moving frame 19 can push the first fixed plate 8 towards the side wall of the detection hole 2 through the action of the spring 25, causing the first telescopic rod assembly 6 to extend and ensuring that the roller 27 can contact the side wall inside the detection hole 2.

[0035] In this embodiment, the linkage detection mechanism includes a partition 24 fixed in the middle of the mounting groove 23. A first telescopic rod assembly 6 is fixed to one side of the partition 24. A first fixing plate 8 is fixed to the end of the piston rod of the first telescopic rod assembly 6. Two swing rods 7 are rotatably connected to one side of the first fixing plate 8. The first telescopic rod assembly 6 is located between the two swing rods 7. An infrared distance detection assembly 5 is installed at one end of the two swing rods 7. The infrared distance detection assembly 5 is slidably installed in the mounting groove 23. The partition 24 is located between the infrared distance detection assemblies 5. When the dam vibrates due to an earthquake, the sidewall inside the detection hole 2 will vibrate. This vibration can be transmitted to the roller 27, and then to the first fixing plate 8 through the contact screw 26. Under the action of the spring 25, the vibration is further transmitted to the roller 27. This causes the first telescopic rod assembly 6 to extend and retract. When the first telescopic rod assembly 6 extends and retracts, the position of the first fixed plate 8 moves relative to the partition 24. When the first fixed plate 8 moves, the angle between the two swing rods 7 on the first fixed plate 8 changes, that is, the distance between the infrared distance detection components 5 changes. The infrared distance detection component 5 consists of an infrared emitting component and an infrared receiving component. The infrared emitting component and the infrared receiving component are rotatably connected to the two swing rods 7 on the same first fixed plate 8, and are slidably installed in the mounting groove 23. By changing the angle between the two swing rods 7, the distance between the infrared emitting component and the infrared receiving component changes, and the vibration of the side wall of the detection hole 2 at that position can be understood. The first telescopic rod assembly 6 and the two swing rods 7 are installed inside the movable frame 19 on the same side. A spring 25 is sleeved on the first telescopic rod assembly 6, and the two ends of the spring 25 are fixed to the first fixed plate 8 and the movable frame 19, respectively. The movable frame 19 adopts a frame structure, and the swing rods 7 and the first telescopic rod assembly 6 on the same side are installed inside the frame. One end of the spring 25 is fixed to the frame. When the frame moves, the spring 25 can drive the first fixed plate 8 to extend and retract the first telescopic rod assembly 6, so that the roller 27 can always be in contact with the side wall inside the detection hole 2, or when the side wall of the detection hole 2 vibrates, the roller 27 will follow the vibration of the side wall of the detection hole 2 and always be in contact with the side wall of the detection hole 2.

[0036] In this embodiment, the adjusting abutment mechanism includes a sliding rod 9 slidably mounted on the first fixed plate 8. One end of the sliding rod 9 is fixed to a second fixed plate 10. A roller 27 is rotatably sleeved on one side of the second fixed plate 10. The roller 27 abuts against the inner wall of the detection hole 2. The sliding rod 9 ensures that the second fixed plate 10 moves smoothly relative to the first fixed plate 8. The abutment between the roller 27 and the inner wall of the detection hole 2 facilitates the smooth descent of the component during installation. That is, the roller 27 can rotate to reduce the friction after abutting against the inner wall of the detection hole 2. At the same time, when the detection hole 2 vibrates due to an earthquake, the force can be transmitted to the second fixed plate 10 through the roller 27 and to the first fixed plate 8 through the abutment screw 26, so that the first fixed plate 8 can push the first telescopic rod assembly 6 to extend and retract. The second fixed plate 10 is threaded with an abutting screw 26. One end of the abutting screw 26 is rotatably sleeved on the first fixed plate 8. By controlling the rotation direction of the abutting screw 26, the second fixed plate 10 can be moved relative to the first fixed plate 8, which makes it easier to control the distance between the first fixed plate 8 and the second fixed plate 10, so that the roller 27 can fully abut against the side wall inside the detection hole 2.

[0037] In this embodiment, the rotating structure includes a rotating shaft 30 rotatably sleeved on the upper end of the vertical rod 18. An infrared sensor emitting component 28 and an infrared sensor receiving component 29 are mounted on the rotating shaft 30. The axes of the infrared sensor emitting component 28, the infrared sensor receiving component 29, the rotating shaft 30, and the vertical rod 18 overlap. A linkage gear 31 is coaxially arranged with the rotating shaft 30. This coaxial arrangement ensures the stability of the rotation of the infrared sensor emitting component 28, the infrared sensor receiving component 29, the rotating shaft 30, and the linkage gear 31. In actual production, the infrared sensor emitting component 28 and the infrared sensor receiving component 29 on adjacent rotating shafts 30 are placed in opposite order; that is, the infrared sensor emitting component 28 and the infrared sensor receiving component 29 on one rotating shaft 30 are placed in reverse order. The infrared sensor receiving component 29 on the adjacent rotating shaft 30 is on the same horizontal line. The infrared light emitted by the infrared sensor transmitting component 28 can be received by the infrared sensor transmitting component 28 on the adjacent rotating shaft 30. At the same time, the time information of light emission and light reception can be uploaded so that the host and other equipment in the control room can receive it. The transmission method can be adjusted by adding wireless or wired transmission components to the component according to the actual situation. The distance between the two rotating shafts 30 can be obtained through the above information. When the dam vibrates due to earthquake, the distance between the two rotating shafts 30 will change. By detecting whether this change exists, it can be determined whether the dam has vibrated due to earthquake. A linkage gear 31 is fixedly mounted on the rotating shaft 30, and a motor assembly 33 is fixed on the vertical rod 18. A drive gear 32 is fixed to the end of the output shaft of the motor assembly 33. The drive gear 32 and the motor assembly 33 mesh with each other. The motor assembly 33 consists of a motor, a reducer, a mounting bracket, control equipment, and other components. Its installation, connection, and control are common knowledge in the field and need not be explained again. The motor assembly 33 can drive the drive gear 32 to rotate, and the drive gear 32 can cause the linkage gear 31 to drive the rotating shaft 30 to rotate, so that the infrared sensor emitting component 28 and the infrared sensor receiving component 29 can rotate. In this embodiment, the rotation ensures that the infrared light emitted by the infrared sensor emitting component 28 is received by multiple infrared sensor receiving components 29. The wiring connection and control of the infrared sensor emitting component 28 and the infrared sensor receiving component 29 during rotation are existing technologies and need not be disclosed again. In another embodiment, whether components such as motor assembly 33 are installed can be set as needed, and a multi-directional light emitter can be provided on the infrared sensor emitting assembly 28 so that the infrared sensor receiving assemblies 29 on both sides can receive the light. Alternatively, the receiving components in the infrared sensor receiving component 29 may be divided into multiple layers from top to bottom, with these multiple receiving components mutually resisting each other. When the receiving layer of the light emitted by the adjacent infrared sensor emitting component 28 changes, it also indicates that there is a problem with the dam or equipment installation, and the situation needs to be checked. The equipment and operating principles required in the above technical solutions are all existing equipment, and there is no need to disclose the required supporting components and control schemes again.

[0038] In this embodiment, a protective cover assembly 4 is fixed on the rotating shaft 30; the inner diameter of the protective cover assembly 4 is D1, and the sum of the diameters of the linkage gear 31 and the drive gear 32 is D2, where D1 > D2; this ensures that the protective cover assembly 4 can fully shield the linkage gear 31, the drive gear 32 and the motor assembly 33 to avoid rust caused by rain and snow, thus helping to ensure that the equipment can operate normally.

[0039] In this embodiment, a solar energy conversion component 3 is installed on the upper end of the plug-in plate 12. The solar energy conversion component 3 is connected to and powered by the linkage detection mechanism, the infrared sensor emitting component 28, and the infrared sensor receiving component 29. The solar energy conversion component 3 adopts existing solar energy to electrical energy equipment, which can convert solar energy into electrical energy. The electrical energy is stored through devices such as batteries, and the stored power can be transmitted to components such as the motor component 33, the infrared sensor emitting component 28, the infrared sensor receiving component 29, and the infrared distance detection component 5 through corresponding cables to enable their operation. The solar energy conversion component 3, as well as the supporting components, corresponding installation components, and connection schemes between the automation components in this application, are all existing technologies. Those skilled in the art can make adaptive adjustments and installations according to the actual specifications and conditions of the equipment, without the need for further detailed explanation.

[0040] In this embodiment, the diameter of the linkage gear 31 is larger than the diameter of the drive gear 32. By controlling the diameter difference between the linkage gear 31 and the drive gear 32, the angular velocity of the linkage gear 31 can be made smaller than the angular velocity of the drive gear 32, thereby slowing down the rotation speed of the shaft 30. This allows control of the rotation speed of the infrared sensor emitting component 28 and the infrared sensor receiving component 29. Furthermore, in actual production, the motor assembly 33 includes motor components, reducer equipment, etc., which can reduce the rotation speed of the drive gear 32, thereby reducing the rotation speed of the shaft 30.

[0041] In this invention, the vertical rod 18 is inserted into the corresponding detection hole 2, and the screw 13 is rotated so that the rotating rod 16 deflects and abuts against the side wall inside the detection hole 2, so that the plug plate 12 moves toward the dam body 1 and is sealed by squeezing the sealing gasket 11. Simultaneously, the pressure rod 22 and the bottom of the detection hole 2 abut against each other, causing the pressure rod 22 to insert into the vertical rod 18. The inclined rod 21 pushes the moving frame 19 to move away from the vertical rod 18, causing the spring 25 to push the first fixed plate 8, i.e., the first telescopic rod assembly 6, to extend, and ensuring that the roller 27 and the side wall of the detection hole 2 abut against each other. When an earthquake occurs, if the dam vibrates, the inner wall of the detection hole 2 will vibrate. The roller 27 can push the first fixed plate 8 through the contact screw 26, causing the first telescopic rod assembly 6 and the spring 25 to be squeezed and contracted. At the same time, the distance between the infrared spacing detection components 5 in the same mounting groove 23 changes, and the detection data can be uploaded to understand the distance change. Meanwhile, the infrared sensor emitting component 28 can rotate and emit infrared light towards the infrared sensor receiving component 29 on the same horizontal plane. Multiple infrared sensor receiving components 29 detect the light. If an earthquake causes the dam to vibrate, the distance between the detection holes 2 will also change, and even the horizontal position relationship of the detection holes 2 will be misaligned. Through the cooperation of the infrared sensor emitting component 28 and the infrared sensor receiving component 29, monitoring can be carried out.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dam vibration response monitoring device under seismic loading, comprising a dam body (1), characterized in that: The upper end of the dam body (1) is provided with multiple detection holes (2) at equal intervals. A positioning mechanism is installed in the detection hole (2). A vertical rod (18) is provided through the positioning mechanism. A pressing mechanism is provided at the lower end of the vertical rod (18). Two moving frames (19) are provided on the pressing mechanism. The lower end of the vertical rod (18) extends into the detection hole (2). Multiple mounting slots (23) are provided on both sides of the vertical rod (18) at equal intervals from top to bottom. A linkage detection mechanism is provided in the mounting slot (23). A spring (25) and a first fixing plate (8) are provided on the linkage detection mechanism. Multiple linkage detection mechanisms located on the same side are all installed in the moving frame (19) on the same side. The spring (25) and the moving frame (19) are connected. An adjustment abutment mechanism is provided on the first fixing plate (8). The upper end of the vertical rod (18) is equipped with a rotating mechanism, on which an infrared sensor emitting component (28) and an infrared sensor receiving component (29) are installed; the infrared sensor emitting components (28) and infrared sensor receiving components (29) on two adjacent rotating mechanisms are staggered. Multiple detection holes (2) are set on the dam body (1) in two staggered rows.

2. The dam vibration response monitoring device under seismic loading according to claim 1, characterized in that: The positioning mechanism includes a plug-in plate (12) that passes through the upper end of the detection hole (2). A ring (15) is slidably installed on one end of the plug-in plate (12) that extends into the detection hole (2). A nut (14) is fixed on the ring (15). A screw (13) is rotatably sleeved on the plug-in plate (12). The lower end of the screw (13) is threaded into the nut (14). The upper end of the ring (15) is rotatably connected to multiple push rods (17) at equal intervals, and the end of the plug-in plate (12) located in the detection hole (2) is rotatably connected to multiple rotating rods (16) at equal intervals. The multiple push rods (17) are rotatably connected to the multiple rotating rods (16) respectively.

3. The dam vibration response monitoring device under seismic loading according to claim 2, characterized in that: A sealing gasket (11) is fixed at the lower end of the horizontal end of the plug-in plate (12), and the sealing gasket (11) abuts against the upper end of the dam body (1); The diameter of the horizontal end of the plug-in disc (12) is greater than the diameter of the detection hole (2), and the outer diameter of the vertical end of the plug-in disc (12) is smaller than the diameter of the detection hole (2).

4. The dam vibration response monitoring device under seismic loading according to claim 1, characterized in that: The extrusion mechanism includes a pressure rod (22) slidably installed at the lower end of the vertical rod (18). The lower end of the pressure rod (22) abuts against the bottom of the detection hole (2). The lower ends of the vertical rod (18) are fixed with second telescopic rod assemblies (20). The two second telescopic rod assemblies (20) are fixedly connected to the lower ends of the two moving frames (19) respectively. The pressure rod (22) is rotatably connected with inclined rods (21) on both sides. The two inclined rods (21) are rotatably connected to the lower ends of the two moving frames (19) respectively.

5. The dam vibration response monitoring device under seismic loading according to claim 1, characterized in that: The linkage detection mechanism includes a partition (24) fixed in the middle of the mounting groove (23). A first telescopic rod assembly (6) is fixed on one side of the partition (24). A first fixing plate (8) is fixed at the end of the piston rod of the first telescopic rod assembly (6). Two swing rods (7) are rotatably connected to one side of the first fixing plate (8). The first telescopic rod assembly (6) is located between the two swing rods (7). An infrared distance detection assembly (5) is installed at one end of the two swing rods (7). The infrared distance detection assembly (5) is slidably installed in the mounting groove (23). The partition (24) is located between the infrared distance detection assemblies (5). The first telescopic rod assembly (6) and two swing rods (7) are disposed in the movable frame (19) on the same side. A spring (25) is sleeved on the first telescopic rod assembly (6), and the two ends of the spring (25) are respectively fixed on the first fixed plate (8) and the movable frame (19).

6. The dam vibration response monitoring device under seismic loading according to claim 1, characterized in that: The adjusting contact mechanism includes a sliding rod (9) slidably mounted on a first fixed plate (8), one end of the sliding rod (9) is fixed to a second fixed plate (10), and a roller (27) is rotatably sleeved on one side of the second fixed plate (10), and the roller (27) abuts against the side wall inside the detection hole (2); The second fixing plate (10) is threaded with an abutting screw (26), one end of which is rotatably sleeved on the first fixing plate (8).

7. The dam vibration response monitoring device under seismic loading according to claim 1, characterized in that: The rotating structure includes a rotating shaft (30) rotatably sleeved on the upper end of the vertical rod (18), the infrared sensor emitting component (28) and the infrared sensor receiving component (29) are mounted on the rotating shaft (30), and the axes of the infrared sensor emitting component (28), the infrared sensor receiving component (29), the rotating shaft (30) and the vertical rod (18) are arranged to overlap. A linkage gear (31) is fixedly mounted on the rotating shaft (30), and a motor assembly (33) is fixed on the vertical rod (18). A drive gear (32) is fixed at the end of the output shaft of the motor assembly (33), and the drive gear (32) and the motor assembly (33) mesh with each other.

8. A dam vibration response monitoring device under seismic loading according to claim 7, characterized in that: A protective cover assembly (4) is fixed on the rotating shaft (30); the inner diameter of the protective cover assembly (4) is D1, and the sum of the diameters of the linkage gear (31) and the drive gear (32) is D2, where D1 > D2.

9. A dam vibration response monitoring device under seismic loading according to claim 1, characterized in that: The upper end of the plug-in plate (12) is equipped with a solar energy conversion component (3), which is connected to and powered by the linkage detection mechanism, the infrared sensor transmitting component (28) and the infrared sensor receiving component (29).

10. A dam vibration response monitoring device under seismic loading according to claim 7, characterized in that: The diameter of the linkage gear (31) is larger than the diameter of the drive gear (32).

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