Reservoir dam body joint deformation monitoring device

Abstract

The invention discloses a reservoir dam body joint deformation monitoring device, which relates to the technical field of water conservancy and hydropower safety monitoring, and adopts the technical scheme that the reservoir dam body joint deformation monitoring device comprises dam bodies, a joint is arranged at the joint of the two dam bodies, a protective shell is arranged at the lower part of one dam body, a displacement sensor is arranged in the protective shell, and the displacement sensor is fixedly connected with a measuring plate; the measuring plate is fixedly connected to the lower portion of one dam body, the measuring plate is fixedly connected to the lower portion of the other dam body, the lower portion of the protective shell is fixedly connected with a control shell, a first motor is arranged in the control shell, and a first gear is arranged at the output end of the first motor. A sliding plate can be driven to move by starting a first motor arranged in the control shell, third gears can be further driven to rotate by movement of the sliding plate, cushioning plates arranged on the two sides of the displacement sensor can be driven to be closed inwards through rotation of the third gears, and therefore the side wall of the displacement sensor is clamped.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower safety monitoring technology, and in particular to a device for monitoring deformation of dam joints in reservoirs and dams. Background Technology

[0002] The dam joint deformation monitoring device is a safety monitoring system used to track the displacement and deformation of dam joints in real time. Through a high-precision sensor network, the device can collect dynamic data such as joint opening and closing, and misalignment around the clock. Combined with wireless transmission technology, the information is fed back to the monitoring platform for remote, visual monitoring. Its core functions include automatically analyzing deformation trends, issuing early warnings of abnormal displacement thresholds, and assisting in assessing the stability of the dam structure. The device is designed for weather resistance, adapting to complex environments such as humidity and high pressure, ensuring long-term monitoring reliability. Through data-driven decision-making, the device can effectively improve the efficiency of dam safety management, provide a scientific basis for flood control scheduling and hidden danger investigation, and safeguard the safety of reservoir operation and the lives and property of downstream residents.

[0003] In practical use, existing devices require the installation of displacement sensors at the joints of the dam body for monitoring. These devices often require additional vibration damping structures to reduce the impact of vibration on the monitoring device. However, the installation process is cumbersome, the construction efficiency is poor, and the device is inconvenient to maintain and replace, increasing maintenance costs. Therefore, a new device for monitoring the deformation of dam body joints in reservoirs is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where displacement sensors, when used for monitoring, need to be installed at the joints of the dam body. These often require additional vibration damping structures to reduce the impact of vibration on the monitoring device. However, the installation process is cumbersome, the construction efficiency is poor, and the equipment is inconvenient to maintain and replace, increasing maintenance costs. Therefore, this invention proposes a dam body joint deformation monitoring device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for monitoring deformation of dam joints in a reservoir dam includes two dam bodies connected by a joint. A protective shell is located at the lower part of one dam body, and a displacement sensor is installed inside the protective shell. The displacement sensor is fixedly connected to a measuring plate, which is fixedly connected to the lower part of the other dam body. A control shell is fixedly connected to the lower part of the protective shell, and a first motor is installed inside the control shell. A first gear is located at the output end of the first motor. The first gear meshes with a second gear, which is threadedly connected to a first threaded rod. The first threaded rod is rotatably connected to a sliding plate, which is slidably connected to the protective shell. A third gear is rotatably connected to the upper part of the sliding plate. A friction groove is located near the third gear on the protective shell. The third gear meshes with a fourth gear, which is fixedly connected to a fifth gear. The fifth gear meshes with a sixth gear, which is fixedly connected to a second threaded rod. The second threaded rod is threadedly connected to a transmission plate, and a damping plate is fixedly connected to the transmission plate.

[0006] After installation, the displacement sensor is protected by a protective housing located outside the sensor. The first motor is started to move the first threaded rod, which in turn moves the sliding plate upward. The upward movement of the sliding plate causes the third gear to rotate under the friction of the inner wall of the friction groove. The rotation of the third gear causes the damping plates on both sides of the displacement sensor to move inward, thereby clamping the side wall of the displacement sensor to absorb external impact force, reduce the impact of vibration, and protect the precision components inside the displacement sensor.

[0007] The above technical solution further includes: The fourth gear is rotatably connected to the clamping housing, and the clamping housing is fixedly connected to the sliding plate.

[0008] The dam body is fixedly connected to the mounting shell, and a wedge-shaped piston is slidably connected inside the mounting shell. A locking ball is provided at the lower part of the wedge-shaped piston, and the locking ball is slidably connected to the mounting shell. There are four locking balls.

[0009] The upper part of the wedge-shaped piston is provided with a locking cavity, and the lower part of the wedge-shaped piston is provided with an unlocking cavity.

[0010] A first spring is fixedly connected to the upper part of the wedge-shaped piston, and a mounting housing is fixedly connected to the side of the first spring away from the wedge-shaped piston.

[0011] An air pipe is fixedly connected to one side of the unlocking chamber and the locking chamber, and an air pump is provided on one side of the air pipe.

[0012] Both the protective housing and the upper part of the displacement sensor are fixedly connected to a mounting rod, and the mounting rod is slidably connected to the mounting housing.

[0013] The damping plate has a damping shell inside, and a guide rod is slidably connected inside the damping shell. The guide rod is fixedly connected to the connecting plate. The damping shell contains a damping medium, and the two sides of the damping shell are sealed.

[0014] A piston is fixedly connected to the side of the guide rod away from the connecting plate. A second spring is fixedly connected to the piston. A shock-absorbing housing is fixedly connected to the side of the second spring away from the piston. A through hole is opened on the upper part of the piston.

[0015] The present invention has the following beneficial effects: 9. In this invention, after the displacement sensor is installed, the protective housing outside the displacement sensor can protect the displacement sensor. By starting the first motor inside the control housing, the sliding plate can be moved. The movement of the sliding plate can further drive the third gear to rotate. The rotation of the third gear can drive the damping plates on both sides of the displacement sensor to close inward, thereby clamping the side wall of the displacement sensor. By clamping the housing, the displacement sensor can absorb external impact force, thereby reducing the impact of vibration on the displacement sensor, protecting the precision components inside the displacement sensor. At the same time, the installation is simple and easy to disassemble and maintain. While ensuring the buffering effect, it improves the construction and maintenance efficiency.

[0016] 10. In this invention, before installing the protective housing and displacement sensor, the installation housing can be pre-embedded inside the dam body. During installation, it is only necessary to insert the installation rods set on the displacement sensor and the protective housing into the installation housing. Then, air is supplied to the locking cavity through an air pump. Under the combined action of the air pressure inside the locking cavity and the first spring, the wedge piston can be driven to move downward, thereby driving the locking ball to move inward and lock the installation rod, thus quickly realizing the installation and fixing of the displacement sensor and the protective housing, and effectively improving the construction efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a reservoir dam joint deformation monitoring device proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the control housing in this invention; Figure 3 This is a schematic diagram of the internal structure of the protective shell in this invention; Figure 4 This is a schematic diagram of the internal structure of the shock-absorbing plate in this invention; Figure 5 This is a schematic diagram of the internal structure of the mounting housing in this invention; Figure 6 This is a schematic diagram of the internal structure of the shock-absorbing shell in this invention; Figure 7 This is a schematic diagram of the internal structure of the clamping housing in this invention.

[0018] In the diagram: 1. Dam body; 2. Protective shell; 3. Control shell; 4. Displacement sensor; 5. Measuring plate; 6. Mounting shell; 7. Mounting rod; 8. First motor; 9. First gear; 10. Second gear; 11. First threaded rod; 12. Locking ball; 13. First spring; 14. Wedge piston; 15. Unlocking chamber; 16. Locking chamber; 17. Air pipe; 18. Air pump; 19. Sliding plate; 20. Shock-absorbing plate; 21. Clamping shell; 22. Third gear; 23. Fourth gear; 24. Friction groove; 25. Shock-absorbing shell; 26. Connecting plate; 27. Transmission plate; 28. Guide rod; 29. ​​Piston; 30. Second spring; 31. Fifth gear; 32. Sixth gear; 33. Second threaded rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 like Figures 1-7 As shown, a device for monitoring deformation of dam joints in a reservoir dam includes a dam body 1. Two dam bodies 1 are joined at a joint. A protective shell 2 is installed at the lower part of one dam body 1. A displacement sensor 4 is installed inside the protective shell 2, and a measuring plate 5 is fixedly connected to the displacement sensor 4. The measuring plate 5 is fixedly connected to the lower part of the other dam body 1. A control shell 3 is fixedly connected to the lower part of the protective shell 2. A first motor 8 is installed inside the control shell 3. A first gear 9 is installed at the output end of the first motor 8. The first gear 9 is meshed with a second gear 10, and the second gear 10 is threadedly connected to a first screw... The first threaded rod 11 is rotatably connected to a sliding plate 19, which is slidably connected to the protective housing 2. A third gear 22 is rotatably connected to the upper part of the sliding plate 19. A friction groove 24 is provided on the protective housing 2 near the third gear 22. The third gear 22 is meshed with a fourth gear 23. The fourth gear 23 is fixedly connected to a fifth gear 31. The fifth gear 31 is meshed with a sixth gear 32. The sixth gear 32 is fixedly connected to a second threaded rod 33. The second threaded rod 33 is threadedly connected to a transmission plate 27. The transmission plate 27 is fixedly connected to a damping plate 20.

[0021] After the displacement sensor 4 is installed, it is protected by the protective housing 2 set outside the displacement sensor 4. The first motor 8 is started to drive the first threaded rod 11 to move, which in turn drives the sliding plate 19 to move upward. The upward movement of the sliding plate 19 causes the third gear 22 to rotate under the friction of the inner wall of the friction groove 24. The rotation of the third gear 22 drives the damping plates 20 on both sides of the displacement sensor 4 to move inward, thereby clamping the side wall of the displacement sensor 4 to absorb external impact force, reduce the impact of vibration, and protect the precision components inside the displacement sensor 4. The fourth gear 23 is rotatably connected to the clamping housing 21, and the clamping housing 21 is fixedly connected to the sliding plate 19.

[0022] In this embodiment, after the displacement sensor 4 is installed, the protective housing 2 outside the displacement sensor 4 can protect the displacement sensor 4. Then, the first motor 8 inside the control housing 3 is activated, which drives the first gear 9 to rotate. The rotation of the first gear 9 drives the meshing second gear 10 to rotate. The rotation of the second gear 10 drives the threaded first threaded rod 11 to move. The movement of the first threaded rod 11 drives the rotatably connected sliding plate 19 to move upward. The movement of the sliding plate 19 further drives the third gear 22 to rotate under the friction of the inner wall of the friction groove 24. The rotation of the third gear 22 drives the meshing fourth gear 23 to rotate. The rotation of the clamping housing 21, which is fixedly connected, causes the fifth gear 31 to rotate, which in turn causes the meshing sixth gear 32 to rotate. The rotation of the sixth gear 32 causes the second threaded rod 33, which is fixedly connected to both sides, to rotate. The rotation of the second threaded rod 33 causes the threaded transmission plate 27 to move, which in turn causes the damping plates 20 on both sides of the displacement sensor 4 to close inward, thereby clamping the side wall of the displacement sensor 4. The clamping housing 21 helps the displacement sensor 4 absorb external impact forces, thereby reducing the impact of vibration on the displacement sensor 4, protecting the precision components inside the displacement sensor 4, and is simple to install and easy to disassemble and maintain. While ensuring the buffering effect, it improves the efficiency of construction and maintenance.

[0023] Example 2 like Figures 1-7As shown, a mounting housing 6 is fixedly connected inside the dam body 1. A wedge-shaped piston 14 is slidably connected inside the mounting housing 6. A locking ball 12 is provided at the lower part of the wedge-shaped piston 14. The locking ball 12 is slidably connected to the mounting housing 6. There are four locking balls 12. A locking cavity 16 is provided at the upper part of the wedge-shaped piston 14. An unlocking cavity 15 is provided at the lower part of the wedge-shaped piston 14. A first spring 13 is fixedly connected to the upper part of the wedge-shaped piston 14. The mounting housing 6 is fixedly connected to the side of the first spring 13 away from the wedge-shaped piston 14. An air pipe 17 is fixedly connected to the side of the unlocking cavity 15 and the locking cavity 16. An air pump 18 is provided on the side of the air pipe 17. Mounting rods 7 are fixedly connected to the upper parts of the protective housing 2 and the displacement sensor 4. The mounting rods 7 are slidably connected to the mounting housing 6.

[0024] The damping plate 20 has a damping shell 25 inside, and a guide rod 28 is slidably connected inside the damping shell 25. The guide rod 28 is fixedly connected to the connecting plate 26. The damping shell 25 has a damping medium inside, and the damping shell 25 is sealed on both sides. A piston 29 is fixedly connected to the side of the guide rod 28 away from the connecting plate 26. A second spring 30 is fixedly connected to the piston 29. The damping shell 25 is fixedly connected to the side of the second spring 30 away from the piston 29. A through hole is opened on the upper part of the piston 29.

[0025] In this embodiment, before installing the protective housing 2 and the displacement sensor 4, an installation housing 6 can be pre-embedded inside the dam body 1. During installation, simply insert the installation rod 7 on the displacement sensor 4 and the protective housing 2 into the installation housing 6. Then, air is supplied to the locking cavity 16 through the air pump 18. Under the combined action of the air pressure inside the locking cavity 16 and the first spring 13, the wedge piston 14 can be moved downward, thereby moving the locking ball 12 inward to lock the installation rod 7. This quickly achieves the installation and fixation of the displacement sensor 4 and the protective housing 2, effectively improving construction efficiency. However, when maintenance requires disassembling the protective housing 2 and the displacement sensor 4... Simply by supplying air to the unlocking chamber 15 via the air pump 18, the increased air pressure inside the unlocking chamber 15 can drive the wedge piston 14 upward, reducing the locking force of the locking ball 12, thereby restoring the insertion and removal of the mounting rod 7, facilitating disassembly and maintenance. Moreover, when the protective housing 2 is subjected to impact or vibration, the guide rod 28, which is fixedly connected to the displacement sensor 4, can drive the piston 29 to move inside the shock-absorbing housing 25. During the movement of the piston 29, the damping medium set inside the shock-absorbing housing 25 will flow through the upper through hole, thereby generating throttling resistance and absorbing the impact kinetic energy. After buffering is completed, the piston 29 can be reset by the second spring 30.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for monitoring deformation of joints in a reservoir dam, comprising a dam body (1), characterized in that, There is a joint at the connection between the two dam bodies (1). A protective shell (2) is provided at the lower part of one of the dam bodies (1). A displacement sensor (4) is provided inside the protective shell (2). A measuring plate (5) is fixedly connected to the displacement sensor (4). The measuring plate (5) is fixedly connected to the lower part of the other dam body (1). A control shell (3) is fixedly connected to the lower part of the protective shell (2). A first motor (8) is provided inside the control shell (3). A first gear (9) is provided at the output end of the first motor (8). A second gear (10) is meshed with the first gear (9). A first threaded rod (11) is threadedly connected to the second gear (10). A sliding plate (19) is rotatably connected to a protective housing (2). A third gear (22) is rotatably connected to the upper part of the sliding plate (19). A friction groove (24) is provided on the protective housing (2) near the third gear (22). A fourth gear (23) is meshed with the third gear (22). A fifth gear (31) is fixedly connected to the fourth gear (23). A sixth gear (32) is meshed with the fifth gear (31). A second threaded rod (33) is fixedly connected to the sixth gear (32). A transmission plate (27) is threadedly connected to the second threaded rod (33). A damping plate (20) is fixedly connected to the transmission plate (27). After the displacement sensor (4) is installed, it is protected by a protective shell (2) set outside the displacement sensor (4). The first motor (8) is started to drive the first threaded rod (11) to move, which in turn drives the sliding plate (19) to move upward. The upward movement of the sliding plate (19) drives the third gear (22) to rotate under the friction of the inner wall of the friction groove (24). The rotation of the third gear (22) drives the damping plates (20) on both sides of the displacement sensor (4) to move inward, thereby clamping the side wall of the displacement sensor (4) to absorb the external impact force, reduce the impact of vibration, and protect the precision components inside the displacement sensor (4).

2. The device for monitoring deformation of dam joints in a reservoir dam according to claim 1, characterized in that, The fourth gear (23) is rotatably connected to the clamping housing (21), and the clamping housing (21) is fixedly connected to the sliding plate (19).

3. The device for monitoring deformation of dam joints in a reservoir dam according to claim 1, characterized in that, The dam body (1) is fixedly connected to the mounting shell (6), and a wedge piston (14) is slidably connected inside the mounting shell (6). A locking ball (12) is provided at the lower part of the wedge piston (14), and the locking ball (12) is slidably connected to the mounting shell (6).

4. The device for monitoring deformation of dam joints in a reservoir dam according to claim 3, characterized in that, The upper part of the wedge piston (14) is provided with a locking cavity (16), and the lower part of the wedge piston (14) is provided with an unlocking cavity (15).

5. The device for monitoring deformation of dam joints in a reservoir dam according to claim 3, characterized in that, A first spring (13) is fixedly connected to the upper part of the wedge piston (14), and a mounting housing (6) is fixedly connected to the side of the first spring (13) away from the wedge piston (14).

6. The device for monitoring deformation of dam joints in a reservoir dam according to claim 4, characterized in that, An air pipe (17) is fixedly connected to one side of the unlocking chamber (15) and the locking chamber (16), and an air pump (18) is provided on one side of the air pipe (17).

7. The device for monitoring deformation of dam joints in a reservoir dam according to claim 1, characterized in that, The protective housing (2) and the displacement sensor (4) are both fixedly connected to the upper part of the mounting rod (7), and the mounting rod (7) is slidably connected to the mounting housing (6).

8. The device for monitoring deformation of dam joints in a reservoir dam according to claim 1, characterized in that, The damping plate (20) has a damping shell (25) inside, and a guide rod (28) is slidably connected inside the damping shell (25). The guide rod (28) is fixedly connected to the connecting plate (26).

9. A device for monitoring deformation of dam joints in a reservoir dam according to claim 8, characterized in that, A piston (29) is fixedly connected to the side of the guide rod (28) away from the connecting plate (26). A second spring (30) is fixedly connected to the piston (29). A shock-absorbing housing (25) is fixedly connected to the side of the second spring (30) away from the piston (29).

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