A dam horizontal displacement monitoring device based on laser ranging

Abstract

The application relates to the technical field of dam horizontal monitoring, and discloses a dam horizontal displacement monitoring device based on laser ranging, which comprises a movable base, a positioning cylinder is fixedly installed at the middle part of the upper end face of the movable base, a positioning rod is slidably installed in the inner cavity of the middle part of the positioning cylinder, a positioning seat is fixedly installed on the outer side wall of the upper part of the positioning rod, an auxiliary seat is rotatably installed in the inner cavity of the upper part of the positioning seat, a clamping seat is arranged in the inner cavity of the middle part of the auxiliary seat, a placing plate is arranged in the inner cavity of the middle part of the clamping seat, an electric control level is fixedly installed in the middle part of the front end face of the placing plate, and the device further comprises a lifting mechanism, a centering mechanism and a clamping mechanism. The height of the laser range finder can be quickly adjusted through the arrangement of the lifting mechanism, the laser range finder can be kept in a horizontal state through the arrangement of the centering mechanism, the laser range finder is prevented from shaking when the movable base moves, and the precision of the laser range finder in horizontal monitoring of the dam is improved.

Description

Technical Field

[0001] This invention relates to the field of dam horizontal monitoring technology, specifically to a dam horizontal displacement monitoring device based on laser ranging. Background Technology

[0002] Dam monitoring is a crucial aspect of ensuring the safe operation of water conservancy projects. It can maximize the project's lifespan and protect the lives, property, and ecological environment of people downstream. Among these measures, dam displacement monitoring can help identify problems such as dam deformation and crack propagation, providing timely warnings of potential safety hazards. Currently, methods for monitoring horizontal displacement of dams mainly employ the plumb line method and tension line method, or deploy inclinometers or strain gauges at key parts of the dam body to calculate displacement through measurement data. Dam deformation is a slow process, therefore, monitoring devices must be able to operate stably for extended periods.

[0003] A search revealed a dam displacement monitoring device, such as the one proposed in publication number CN221649401U, which includes a housing, a vertical displacement measurement area, a horizontal displacement measurement area, a grating sensor assembly, a grating demodulator, and a battery pack. One end of the measuring rod extends through the housing to the outside, and the other end of the measuring rod is fixed to the moving plate. A telescopic spring is fitted onto the measuring rod. The grating sensor assembly is connected to the grating demodulator. The measuring rod in the vertical displacement measurement area is welded to a dam surface fixing seat, and the measuring rod in the horizontal displacement measurement area is welded to a foundation fixing seat. By setting up the vertical displacement measurement area and the horizontal displacement measurement area, the displacement in both vertical and horizontal directions can be measured simultaneously, effectively expanding the monitoring range and shortening the monitoring process.

[0004] Because the measuring rod connector moves synchronously with the dam, and dam movement is monitored by tracking the displacement of the connector, the continuous movement of the connector causes the measuring equipment mounted on it to vibrate and tilt, affecting the accuracy of the monitoring data and resulting in poor performance in dam horizontal monitoring. Therefore, there is an urgent need for a laser ranging-based dam horizontal displacement monitoring device to solve this problem. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a dam horizontal displacement monitoring device based on laser ranging to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a dam horizontal displacement monitoring device based on laser ranging, comprising a movable base, a positioning cylinder fixedly installed at the center of the upper end face of the movable base, a positioning rod slidably installed at the center of the inner cavity of the positioning cylinder, a positioning seat fixedly installed at the upper part of the outer side wall of the positioning rod, an auxiliary seat rotatably installed at the upper part of the inner cavity of the positioning seat, a clamping seat provided at the center of the inner cavity of the auxiliary seat, a placement plate provided at the center of the inner cavity of the clamping seat, and an electronically controlled level fixedly installed at the center of the front end face of the placement plate, and further comprising: A lifting mechanism is provided on the upper part of the outer side wall of the positioning cylinder, and the lifting mechanism is used to raise and lower the positioning rod. A centering mechanism is provided on the side wall of the positioning seat, and the centering mechanism is used to level the placement plate; A clamping mechanism is disposed on the upper end face of the clamping base, and the clamping mechanism is used to fix the laser rangefinder.

[0009] Preferably, the lifting mechanism includes a positioning ring fixedly installed on the upper part of the outer wall of the positioning cylinder, and a control box fixedly installed on the front side of the inner cavity of the positioning ring. A helical gear is rotatably installed in the lower part of the inner cavity of the control box, and a lifting worm is rotatably installed in the upper part of the inner cavity of the control box. A handle is fixedly installed through the front end face of the lifting worm through the control box.

[0010] Preferably, a helical rack is fixedly installed on the front side of the outer wall of the positioning rod, the helical rack meshes with a helical gear, the helical gear meshes with a lifting worm gear, and a reinforcing rod is fixedly installed in the middle of the bottom surface of the inner cavity of the positioning cylinder, the reinforcing rod being slidably connected to the positioning rod.

[0011] Preferably, the centering mechanism includes an extension column fixedly installed in the middle of the inner cavity of the positioning seat, and a vertical plate fixedly installed on the right end face of the positioning seat. A first worm gear is rotatably installed in the inner cavity of the vertical plate. A first motor is fixedly installed on the lower part of the right end face of the positioning seat through a frame. A first worm wheel is fixedly installed on the right end face of the extension column.

[0012] Preferably, the output shaft end of the first motor is fixedly connected to the first worm gear, the first worm gear is meshed with the first worm wheel, the extension column is rotatably connected to the positioning seat, a side plate is fixedly installed on the upper part of the rear end face of the auxiliary seat, a second worm gear is rotatably installed in the inner cavity of the side plate, and a second motor is fixedly installed on the upper part of the rear end face of the auxiliary seat through a frame.

[0013] Preferably, the output shaft end of the second motor is fixedly connected to the second worm gear, a connecting rod is fixedly installed in the middle of the inner cavity of the clamping seat, the connecting rod is rotatably connected to the auxiliary seat, and a second worm wheel is fixedly installed on the rear end face of the connecting rod, the second worm wheel meshing with the second worm gear.

[0014] Preferably, a support column is fixedly installed in the middle of the inner cavity of the placement plate, a third worm gear is fixedly installed on the upper end face of the support column, a support plate is fixedly installed on the front of the upper end face of the placement plate, and a third worm is rotatably installed in the inner cavity of the support plate on both the front and rear sides. The third worm is meshed with the third worm gear, and a third motor is fixedly installed on the upper end face of the placement plate through a frame. The output shaft end of the third motor is fixedly connected to the third worm.

[0015] Preferably, the clamping mechanism includes a drive rod rotatably mounted on the rear side of the inner cavity of the placement plate, and a bidirectional screw rotatably mounted on the front side of the inner cavity of the placement plate. An ear plate is fixedly mounted on the left end face of the placement plate, and a clamping worm gear is rotatably mounted in the inner cavity of the ear plate. A clamping worm wheel is fixedly mounted on the left end face of the drive rod, and the clamping worm wheel is meshed with the clamping worm gear. Sliding grooves are formed on the left and right sides of the upper end face of the placement plate, and a sliding seat is slidably mounted in the inner cavity of the sliding groove. A sprocket is fixedly mounted on the right end face of the bidirectional screw and the drive rod.

[0016] Preferably, the sprockets on the front and rear sides are connected by chain drive, a clamping motor is fixedly installed on the left end face of the placement plate by the frame, the output shaft end of the clamping motor is fixedly connected to the clamping worm, the left and right sides of the bidirectional screw have opposite thread directions, the sliding seat is slidably connected to the drive rod, the sliding seat is threadedly connected to the bidirectional screw, and fixed clamps are fixedly installed on the left and right sides of the upper end face of the placement plate.

[0017] Preferably, a movable clamp is fixedly installed on the upper end face of the sliding seat, a support rod is fixedly installed in the inner cavity of the movable clamp, movable seats are slidably installed on the front and rear sides of the outer side wall of the support rod, a return spring is wound on the outer side wall of the support rod, one end of the return spring is fixedly installed on the inner side wall of the movable clamp, and the other end is fixedly connected to the movable seat, a connecting plate is rotatably installed on the side wall of the movable seat, and a movable clamp is rotatably installed on the end of the connecting plate away from the movable seat.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the user can start the first motor to rotate the first worm gear. Since the first worm gear is engaged with the first worm wheel, the first worm wheel will drive the extension column to rotate, and the auxiliary seat can be flipped in the front-back direction. The user can start the second motor to rotate the second worm gear. The second worm wheel is engaged with the second worm gear, and the second worm wheel can drive the connecting rod to rotate. The connecting rod is fixedly connected to the clamping seat, and the clamping seat can be flipped in the left-right direction. The user can start the third motor to rotate the third worm gear. The third worm gear is engaged with the third worm wheel, and the third worm wheel can drive the support column to rotate. Since the support column is fixedly connected to the placement plate, the placement plate will rotate horizontally. Thus, through the above-described method, this device, together with the electrically controlled level fixedly installed in the middle of the front face of the placement plate, realizes the rotation of the placement plate in the X, Y, and Z directions, so that the laser rangefinder installed on the placement plate is always in a horizontal state, avoiding the shaking of the laser rangefinder when the moving base moves, thereby improving the accuracy of the laser rangefinder in monitoring the horizontal position of the dam.

[0019] 2. In this invention, the user can start the clamping motor to rotate the clamping worm. Since the clamping worm wheel is meshed with the clamping worm, it can drive the drive rod to rotate. Both the right end face of the bidirectional screw and the drive rod are fixedly mounted with sprockets. Under the transmission of the chain, the bidirectional screw can be rotated. Because the left and right sides of the bidirectional screw have opposite thread directions, the sliding seat is slidably connected to the drive rod and threadedly connected to the bidirectional screw. The left and right sliding seats can then drive the movable clamping seats to move closer together, causing the movable clamping plate to fit against the surface of the laser rangefinder. Combined with the fixed clamping seat, this achieves the limiting and fixing of the laser rangefinder. When the movable clamping plate clamps the laser rangefinder, excessive pressure on the laser rangefinder can be counteracted by squeezing the connecting plate, causing the movable seat to slide on the side wall of the support rod. This allows the return spring to be compressed, absorbing excessive stress and ensuring the safety of the entire device when fixing the laser rangefinder. Attached Figure Description

[0020] Figure 1 This is a frontal view of the overall structure of a dam horizontal displacement monitoring device based on laser ranging according to the present invention; Figure 2 This is a side view schematic diagram of the overall structure of a dam horizontal displacement monitoring device based on laser ranging according to the present invention; Figure 3 This is a rear-view schematic diagram of the overall structure of a dam horizontal displacement monitoring device based on laser ranging according to the present invention; Figure 4 This is a cross-sectional view of the control box of a dam horizontal displacement monitoring device based on laser ranging according to the present invention. Figure 5 This is a schematic cross-sectional view of the positioning cylinder of a dam horizontal displacement monitoring device based on laser ranging according to the present invention. Figure 6 This is a rear-view partial structural diagram of a dam horizontal displacement monitoring device based on laser ranging according to the present invention; Figure 7 This is a front view of the placement plate of the dam horizontal displacement monitoring device based on laser ranging according to the present invention. Figure 8 This is a top view of the placement plate of the dam horizontal displacement monitoring device based on laser ranging according to the present invention. Figure 9 This is a side view of the placement plate of the dam horizontal displacement monitoring device based on laser ranging according to the present invention.

[0021] In the diagram: 1. Movable base; 2. Positioning cylinder; 21. Positioning rod; 3. Positioning seat; 4. Auxiliary seat; 5. Clamping seat; 6. Placement plate; 61. Sliding groove; 7. Lifting mechanism; 71. Positioning ring; 72. Control box; 73. Helical gear; 74. Lifting worm; 75. Handle; 76. Helical rack; 77. Reinforcing rod; 8. Centering mechanism; 81. Extension column; 82. Vertical plate; 83. First worm; 84. First motor; 85. First worm wheel; 86. Side plate; 87. Second worm; 88. Second motor; 8 9. Connecting rod; 810. Second worm gear; 811. Support column; 812. Third worm gear; 813. Support plate; 814. Third worm; 815. Third motor; 9. Clamping mechanism; 91. Drive rod; 92. Bidirectional screw; 93. Ear plate; 94. Clamping worm; 95. Clamping worm gear; 96. Sliding seat; 97. Sprocket; 98. Clamping motor; 99. Fixed clamp; 910. Moving clamp; 911. Support rod; 912. Moving seat; 913. Return spring; 914. Connecting plate; 915. Moving clamp. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-9 This invention provides a technical solution for a dam horizontal displacement monitoring device based on laser ranging: A dam horizontal displacement monitoring device based on laser ranging includes a movable base 1, a positioning cylinder 2 fixedly installed at the center of the upper end face of the movable base 1, a positioning rod 21 slidably installed at the center of the inner cavity of the positioning cylinder 2, a positioning seat 3 fixedly installed on the upper part of the outer side wall of the positioning rod 21, an auxiliary seat 4 rotatably installed on the upper part of the inner cavity of the positioning seat 3, a clamping seat 5 provided at the center of the inner cavity of the auxiliary seat 4, a placement plate 6 provided at the center of the inner cavity of the clamping seat 5, and an electrically controlled level fixedly installed at the center of the front end face of the placement plate 6. The device also includes: Lifting mechanism 7 is located on the upper part of the outer side wall of positioning cylinder 2. Lifting mechanism 7 is used to lift positioning rod 21 up and down. Centering mechanism 8 is installed on the side wall of positioning seat 3 and is used to level the placement plate 6. The clamping mechanism 9 is located on the upper surface of the clamping base 5 and is used to fix the laser rangefinder.

[0024] Furthermore, the lifting mechanism 7 includes a positioning ring 71 fixedly installed on the upper part of the outer wall of the positioning cylinder 2, and an operating box 72 fixedly installed on the front side of the inner cavity of the positioning ring 71. A helical gear 73 is rotatably installed in the lower part of the inner cavity of the operating box 72, and a lifting worm 74 is rotatably installed in the upper part of the inner cavity of the operating box 72. A handle 75 is fixedly installed through the front end face of the lifting worm 74 through the operating box 72. A helical rack 76 is fixedly installed on the front side of the outer wall of the positioning rod 21. The helical rack 76 is meshed with a helical gear 73. The helical gear 73 is meshed with a lifting worm 74. A reinforcing rod 77 is fixedly installed in the middle of the bottom surface of the inner cavity of the positioning cylinder 2. The reinforcing rod 77 is slidably connected to the positioning rod 21.

[0025] It should be noted that the user can rotate the lifting worm 74 through the handle 75. Since the helical gear 73 is meshed with the lifting worm 74 and the helical rack 76 is meshed with the helical gear 73, the helical rack 76 can drive the positioning rod 21 to slide up and down in the inner cavity of the positioning cylinder 2, thereby adjusting the height of the positioning seat 3. At this time, the height of the laser surveying instrument will change to suit the use of dam horizontal monitoring at different heights. A reinforcing rod 77 is fixedly installed in the middle of the bottom surface of the inner cavity of the positioning cylinder 2, which can increase the connection performance between the positioning cylinder 2 and the positioning rod 21, prevent the positioning rod 21 from bending due to excessive weight of the equipment on the placement plate 6, and improve the service life of the entire device.

[0026] Furthermore, the centering mechanism 8 includes an extension column 81 fixedly installed in the middle of the inner cavity of the positioning seat 3, and a vertical plate 82 fixedly installed on the right end face of the positioning seat 3. A first worm gear 83 is rotatably installed in the inner cavity of the vertical plate 82. A first motor 84 is fixedly installed on the lower part of the right end face of the positioning seat 3 through a frame. A first worm wheel 85 is fixedly installed on the right end face of the extension column 81. The output shaft end of the first motor 84 is fixedly connected to the first worm 83, the first worm 83 is meshed with the first worm wheel 85, the extension column 81 is rotatably connected to the positioning seat 3, a side plate 86 is fixedly installed on the upper part of the rear end face of the auxiliary seat 4, a second worm 87 is rotatably installed in the inner cavity of the side plate 86, and a second motor 88 is fixedly installed on the upper part of the rear end face of the auxiliary seat 4 through the frame. The output shaft end of the second motor 88 is fixedly connected to the second worm 87. A connecting rod 89 is fixedly installed in the middle of the inner cavity of the clamping seat 5. The connecting rod 89 is rotatably connected to the auxiliary seat 4. A second worm wheel 810 is fixedly installed on the rear end face of the connecting rod 89. The second worm wheel 810 is meshed with the second worm 87. A support column 811 is fixedly installed in the middle of the inner cavity of the placement plate 6. A third worm gear 812 is fixedly installed on the upper end face of the support column 811. A support plate 813 is fixedly installed on the front of the upper end face of the placement plate 6. A third worm 814 is rotatably installed in the inner cavity of the support plate 813 on both the front and rear sides. The third worm 814 is meshed with the third worm gear 812. A third motor 815 is fixedly installed on the upper end face of the placement plate 6 through the frame. The output shaft end of the third motor 815 is fixedly connected to the third worm 814.

[0027] It should be noted that the user can start the first motor 84 to make the first worm 83 rotate. Since the first worm 83 is meshed with the first worm wheel 85, the first worm wheel 85 will drive the extension column 81 to rotate. At this time, the auxiliary seat 4 can be flipped in the front and back directions. The user can start the second motor 88 to make the second worm 87 rotate. The second worm wheel 810 meshes with the second worm 87. At this time, the second worm wheel 810 can drive the connecting rod 89 to rotate. The connecting rod 89 is fixedly connected to the clamping seat 5. At this time, the clamping seat 5 can be flipped in the left and right directions. The user can start the third motor 815 to make the third worm 814 rotate. The third worm 814 meshes with the third worm wheel 812. At this time, the third worm wheel 812 can drive the support column 811 to rotate. Since the support column 811 is fixedly connected to the placement plate 6, the placement plate 6 will rotate horizontally. Thus, through the above-described device, in conjunction with the electrically controlled level fixedly installed in the middle of the front end face of the placement plate 6, the placement plate 6 can be rotated in the X, Y, and Z directions, so that the laser rangefinder installed on the placement plate 6 is always in a horizontal state, avoiding the shaking of the laser rangefinder caused by the movement of the moving base 1, thereby improving the accuracy of the laser rangefinder in monitoring the horizontal position of the dam.

[0028] Furthermore, the clamping mechanism 9 includes a drive rod 91 rotatably mounted on the rear side of the inner cavity of the placement plate 6, and a bidirectional screw 92 rotatably mounted on the front side of the inner cavity of the placement plate 6. An ear plate 93 is fixedly mounted on the left end face of the placement plate 6, and a clamping worm gear 94 is rotatably mounted in the inner cavity of the ear plate 93. A clamping worm wheel 95 is fixedly mounted on the left end face of the drive rod 91, and the clamping worm wheel 95 is meshed with the clamping worm gear 94. Sliding grooves 61 are opened on the left and right sides of the upper end face of the placement plate 6. A sliding seat 96 is slidably mounted in the inner cavity of the sliding groove 61. A sprocket 97 is fixedly mounted on the right end face of the bidirectional screw 92 and the drive rod 91. The sprockets 97 on the front and rear sides are connected by chain drive. The left end face of the placement plate 6 is fixedly mounted with a clamping motor 98 through the frame. The output shaft end of the clamping motor 98 is fixedly connected with the clamping worm 94. The left and right sides of the bidirectional screw 92 have opposite thread directions. The sliding seat 96 is slidably connected with the drive rod 91. The sliding seat 96 is threadedly connected with the bidirectional screw 92. The left and right sides of the upper end face of the placement plate 6 are fixedly mounted with fixed clamps 99. A movable clamp 910 is fixedly installed on the upper end face of the sliding seat 96. A support rod 911 is fixedly installed in the inner cavity of the movable clamp 910. Movable seats 912 are slidably installed on the front and rear sides of the outer side wall of the support rod 911. A return spring 913 is wound on the outer side wall of the support rod 911. One end of the return spring 913 is fixedly installed on the inner side wall of the movable clamp 910, and the other end is fixedly connected to the movable seat 912. A connecting plate 914 is rotatably installed on the side wall of the movable seat 912. A movable clamp 915 is rotatably installed on the end of the connecting plate 914 away from the movable seat 912.

[0029] It should be noted that the user can start the clamping motor 98 to rotate the clamping worm 94. Since the clamping worm wheel 95 is engaged with the clamping worm 94, it can drive the drive rod 91 to rotate. A sprocket 97 is fixedly mounted on the right end face of both the bidirectional screw 92 and the drive rod 91. Under the transmission of the chain, the bidirectional screw 92 can be rotated. Because the left and right sides of the bidirectional screw 92 have opposite thread directions, the sliding seat 96 is slidably connected to the drive rod 91, and threadedly connected to the bidirectional screw 92. At this time, the left and right sides... The sliding seat 96 can drive the movable clamp 910 to move closer together, so that the movable clamp 915 fits against the surface of the laser rangefinder. With the setting of the fixed clamp 99, the laser rangefinder can be limited and fixed. When the movable clamp 915 clamps the laser rangefinder, the excessive pressure reaction force of the movable clamp 915 on the laser rangefinder can squeeze the connecting plate 914, so that the movable seat 912 slides on the side wall of the support rod 911, which can compress the return spring 913. This can absorb excessive stress and ensure the safety of the whole device when fixing the laser rangefinder.

[0030] Working principle: During operation, the user can rotate the lifting worm 74 by gripping the handle 75. Since the helical gear 73 is meshed with the lifting worm 74 and the helical rack 76 is meshed with the helical gear 73, the helical rack 76 can drive the positioning rod 21 to slide up and down in the inner cavity of the positioning cylinder 2, thereby adjusting the height of the positioning seat 3. At this time, the height of the laser surveying instrument will change to suit the horizontal monitoring of dams at different heights. A reinforcing rod 77 is fixedly installed in the middle of the bottom surface of the inner cavity of the positioning cylinder 2, which can increase the connection performance between the positioning cylinder 2 and the positioning rod 21, prevent the positioning rod 21 from bending due to excessive weight of the equipment on the placement plate 6, and improve the service life of the entire device. The user can start the first motor 84 to make the first worm 83 rotate. Since the first worm 83 is meshed with the first worm wheel 85, the first worm wheel 85 will drive the extension column 81 to rotate. At this time, the auxiliary seat 4 can be flipped in the front and back directions. The user can start the second motor 88 to make the second worm 87 rotate. The second worm wheel 810 meshes with the second worm 87. At this time, the second worm wheel 810 can drive the connecting rod 89 to rotate. The connecting rod 89 is fixedly connected to the clamping seat 5. At this time, the clamping seat 5 can be flipped in the left and right directions. The user can start the third motor 815 to make the third worm 814 rotate. The third worm 814 meshes with the third worm wheel 812. At this time, the third worm wheel 812 can drive the support column 811 to rotate. Since the support column 811 is fixedly connected to the placement plate 6, the placement plate 6 will rotate horizontally. Thus, through the above-described device, in conjunction with the electrically controlled level fixedly installed in the middle of the front end face of the placement plate 6, the placement plate 6 can be rotated in the X, Y, and Z directions, so that the laser rangefinder installed on the placement plate 6 is always in a horizontal state, avoiding the shaking of the laser rangefinder caused by the movement of the moving base 1, thereby improving the accuracy of the laser rangefinder in monitoring the horizontal position of the dam. The user can start the clamping motor 98 to rotate the clamping worm 94. Since the clamping worm wheel 95 is engaged with the clamping worm 94, it drives the drive rod 91 to rotate. A sprocket 97 is fixedly mounted on the right end face of both the bidirectional screw 92 and the drive rod 91. Under the transmission of the chain, the bidirectional screw 92 can be rotated. Because the threads on the left and right sides of the bidirectional screw 92 are opposite, the sliding seat 96 is slidably connected to the drive rod 91, and threadedly connected to the bidirectional screw 92. At this time, the sliding seats on the left and right sides... The seat 96 can drive the movable clamp 910 to move closer together, so that the movable clamp 915 fits against the surface of the laser rangefinder. With the setting of the fixed clamp 99, the laser rangefinder can be limited and fixed. When the movable clamp 915 clamps the laser rangefinder, the excessive pressure reaction force of the movable clamp 915 on the laser rangefinder can squeeze the connecting plate 914, so that the movable seat 912 slides on the side wall of the support rod 911, which can compress the return spring 913. This can absorb excessive stress and ensure the safety of the entire device when fixing the laser rangefinder.

[0031] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A dam horizontal displacement monitoring device based on laser ranging, comprising a movable base (1), characterized in that, A positioning cylinder (2) is fixedly installed in the middle of the upper end face of the movable base (1). A positioning rod (21) is slidably installed in the middle of the inner cavity of the positioning cylinder (2). A positioning seat (3) is fixedly installed on the upper part of the outer side wall of the positioning rod (21). An auxiliary seat (4) is rotatably installed in the upper part of the inner cavity of the positioning seat (3). A clamping seat (5) is provided in the middle of the inner cavity of the auxiliary seat (4). A placement plate (6) is provided in the middle of the inner cavity of the clamping seat (5). An electric level is fixedly installed in the middle of the front end face of the placement plate (6). The system also includes: Lifting mechanism (7) is provided on the upper part of the outer side wall of the positioning cylinder (2). The lifting mechanism (7) is used to lift the positioning rod (21) up and down. Centering mechanism (8), which is disposed on the side wall of positioning seat (3), is used to level the placement plate (6); The clamping mechanism (9) is disposed on the upper end face of the clamping seat (5) and is used to fix the laser rangefinder.

2. The dam horizontal displacement monitoring device based on laser ranging according to claim 1, characterized in that: The lifting mechanism (7) includes a positioning ring (71) fixedly installed on the upper part of the outer wall of the positioning cylinder (2), and an operating box (72) fixedly installed on the front side of the inner cavity of the positioning ring (71). A helical gear (73) is rotatably installed in the lower part of the inner cavity of the operating box (72), and a lifting worm (74) is rotatably installed in the upper part of the inner cavity of the operating box (72). A handle (75) is fixedly installed through the front end face of the lifting worm (74) through the operating box (72).

3. The dam horizontal displacement monitoring device based on laser ranging according to claim 2, characterized in that: A helical rack (76) is fixedly installed on the front side of the outer wall of the positioning rod (21). The helical rack (76) is meshed with a helical gear (73). The helical gear (73) is meshed with a lifting worm (74). A reinforcing rod (77) is fixedly installed in the middle of the bottom surface of the inner cavity of the positioning cylinder (2). The reinforcing rod (77) is slidably connected to the positioning rod (21).

4. The dam horizontal displacement monitoring device based on laser ranging according to claim 1, characterized in that: The centering mechanism (8) includes an extension column (81) fixedly installed in the middle of the inner cavity of the positioning seat (3) and a vertical plate (82) fixedly installed on the right end face of the positioning seat (3). A first worm gear (83) is rotatably installed in the inner cavity of the vertical plate (82). A first motor (84) is fixedly installed on the lower part of the right end face of the positioning seat (3) through a frame. A first worm wheel (85) is fixedly installed on the right end face of the extension column (81).

5. A dam horizontal displacement monitoring device based on laser ranging according to claim 4, characterized in that: The output shaft end of the first motor (84) is fixedly connected to the first worm (83), the first worm (83) is meshed with the first worm wheel (85), the extension column (81) is rotatably connected to the positioning seat (3), a side plate (86) is fixedly installed on the upper part of the rear end face of the auxiliary seat (4), a second worm (87) is rotatably installed in the inner cavity of the side plate (86), and a second motor (88) is fixedly installed on the upper part of the rear end face of the auxiliary seat (4) through the frame.

6. A dam horizontal displacement monitoring device based on laser ranging according to claim 5, characterized in that: The output shaft end of the second motor (88) is fixedly connected to the second worm (87). A connecting rod (89) is fixedly installed in the middle of the inner cavity of the clamping seat (5). The connecting rod (89) is rotatably connected to the auxiliary seat (4). A second worm wheel (810) is fixedly installed on the rear end face of the connecting rod (89). The second worm wheel (810) is meshed with the second worm (87).

7. A dam horizontal displacement monitoring device based on laser ranging according to claim 6, characterized in that: A support column (811) is fixedly installed in the middle of the inner cavity of the placement plate (6). A third worm gear (812) is fixedly installed on the upper end face of the support column (811). A support plate (813) is fixedly installed on the front end of the upper end face of the placement plate (6). A third worm (814) is rotatably installed in the inner cavity of the support plate (813) on both the front and rear sides. The third worm (814) is meshed with the third worm gear (812). A third motor (815) is fixedly installed on the upper end face of the placement plate (6) through the frame. The output shaft end of the third motor (815) is fixedly connected to the third worm (814).

8. A dam horizontal displacement monitoring device based on laser ranging according to claim 1, characterized in that: The clamping mechanism (9) includes a drive rod (91) rotatably mounted on the rear side of the inner cavity of the placement plate (6) and a bidirectional screw (92) rotatably mounted on the front side of the inner cavity of the placement plate (6). An ear plate (93) is fixedly mounted on the left end face of the placement plate (6). A clamping worm (94) is rotatably mounted in the inner cavity of the ear plate (93). A clamping worm wheel (95) is fixedly mounted on the left end face of the drive rod (91). The clamping worm wheel (95) meshes with the clamping worm (94). Sliding grooves (61) are opened on the left and right sides of the upper end face of the placement plate (6). A sliding seat (96) is slidably mounted in the inner cavity of the sliding groove (61). A sprocket (97) is fixedly mounted on the right end face of the bidirectional screw (92) and the drive rod (91).

9. A dam horizontal displacement monitoring device based on laser ranging according to claim 8, characterized in that: The sprockets (97) on the front and rear sides are connected by chain drive. The left end face of the placement plate (6) is fixedly mounted with a clamping motor (98) through the frame. The output shaft end of the clamping motor (98) is fixedly connected with the clamping worm (94). The left and right sides of the bidirectional screw (92) have opposite thread directions. The sliding seat (96) is slidably connected with the drive rod (91). The sliding seat (96) is threadedly connected with the bidirectional screw (92). The left and right sides of the upper end face of the placement plate (6) are fixedly mounted with fixed clamps (99).

10. A dam horizontal displacement monitoring device based on laser ranging according to claim 9, characterized in that: A movable clamp (910) is fixedly installed on the upper end face of the sliding seat (96). A support rod (911) is fixedly installed in the inner cavity of the movable clamp (910). Movable seats (912) are slidably installed on the front and rear sides of the outer side wall of the support rod (911). A return spring (913) is wound on the outer side wall of the support rod (911). One end of the return spring (913) is fixedly installed on the inner side wall of the movable clamp (910), and the other end is fixedly connected to the movable seat (912). A connecting plate (914) is rotatably installed on the side wall of the movable seat (912). A movable clamp (915) is rotatably installed on the end of the connecting plate (914) away from the movable seat (912).

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