Dam settlement monitoring device

Abstract

The invention discloses a dam settlement monitoring device, which comprises a laser emission unit arranged on a fixed base surface far away from a dam; the reflection units are arranged on a dam needing settlement monitoring at intervals; the target screen is arranged on the fixed base surface far away from the dam; the data processing unit is in electric signal connection with the laser emitting unit and the target screen; wherein multiple beams of laser emitted by the laser emitting unit are reflected to the target screen through the reflection unit, the imaging unit in the target screen images the target screen, image information is transmitted to the data processing unit through the communication unit, and the data processing unit compares the received image information with pre-stored information so as to judge whether the dam settles or not. According to the device, the use number of the target screens can be reduced, and the input cost of equipment required for dam monitoring is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of dam detection, and more specifically, relates to a dam settlement monitoring device. Background Art

[0002] The stability of the dam is related to the safety of people's lives and property and national economic construction, and has always been a focus of water conservancy and hydropower engineering. In order to ensure the safe and stable operation of the dam, it is necessary to monitor the settlement of the dam in real time to ensure the safe operation of the dam. At present, the monitoring of dam settlement usually adopts manual leveling, which has the advantage of high measurement accuracy, but the disadvantages are also very prominent, such as large workload, low observation efficiency, and great influence of the external environment. Patent publication number CN113237426A discloses a dam displacement monitoring method, in which the laser emitted by the laser emission module hits the target screen, the imaging module obtains the image on the target screen, and transmits the image to the data processing unit. After receiving the image, the data processing unit reads the code of the laser position on the image, and performs data analysis on the code, identifies the coordinate data of the laser position, and then judges whether the dam has displacement according to the coordinate data. The settlement of the dam can be automatically and accurately measured, the manual workload is small, the measurement speed is fast, the efficiency is high, and the external environment is small. However, this technology requires a target screen to be set up at each monitoring point, which leads to the problem of large equipment investment. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] One object of the present invention is to provide a dam settlement monitoring device, which utilizes a reflector to reflect laser light to a target screen, thereby reducing the number of target screens used and reducing the equipment investment cost.

[0005] In order to achieve these purposes and other advantages of the present invention, a dam settlement monitoring device is provided, comprising: A laser emitting unit is arranged on a fixed base surface far away from the dam; A number of reflector units are arranged at intervals on the embankment where settlement monitoring is required; A target screen is arranged on a fixed base surface far away from the dam; A data processing unit, which is connected to the laser emitting unit and the target screen by electrical signals; Among them, multiple laser beams emitted by the laser emitting unit are reflected to the target screen by the reflecting unit respectively, and the imaging unit in the target screen images the target screen. The image information is transmitted to the data processing unit through the communication unit. The data processing unit compares the received image information with the pre-stored information to determine whether the dam has settled.

[0006] Preferably, the laser emitting unit comprises a shell, a plurality of laser chips and a mounting tube corresponding to the laser chip, wherein a receiving cavity with an opening at one end is formed in the shell, the opening end of the shell is a light outlet, the laser chip is fixedly arranged in the mounting tube, and the mounting tube is rotatably arranged in the receiving cavity. Preferably, one end of the mounting tube is hinged to the shell, and the other end is provided with an adjusting screw, an arc-shaped hole is provided on the shell, the free end of the adjusting screw passes through the arc-shaped hole, and a nut is provided on the adjusting screw.

[0007] Preferably, the reflection unit includes a fixed column and a second reflector, the fixed column is fixed on the dam requiring settlement monitoring, and the second reflector is arranged on the fixed column via a connecting structure so that the second reflector can swing up and down and left and right.

[0008] Preferably, the connection structure comprises: A fixing plate, which is fixedly connected to the top of the fixing column, and a first mounting hole is provided at a free end of the fixing plate; A height adjustment mechanism, the bottom of which is provided with a rotating shaft, the rotating shaft passes through the first mounting hole so as to rotatably arrange the height adjustment mechanism above the fixing plate, and the height adjustment mechanism is fixedly connected to the second reflector; The left-right adjustment mechanism is arranged below the fixing plate, and the left-right adjustment mechanism is connected to the rotating shaft to adjust the rotation of the height adjustment mechanism.

[0009] Preferably, the height adjustment mechanism comprises: A first installation box is provided with a long strip through hole on the front side, and a rotating shaft is provided at the bottom of the first installation box; A first threaded rod, both ends of which are rotatably connected to the upper and lower ends of the first installation box, the upper end of the first threaded rod passes through the upper end of the first installation box, and the upper end of the first threaded rod is provided with a first handle; The slider is a T-shaped structure, a horizontal portion of the slider is provided with a first threaded hole, a first threaded rod is threadedly connected to the first threaded hole, a vertical portion of the slider extends out of the first installation box through the long strip through hole, and a second reflector is fixedly connected to the vertical portion of the slider; The first threaded rod is rotated by the first handle to drive the second reflecting mirror to move up and down.

[0010] Preferably, the left and right adjustment mechanism comprises: A second installation box is provided with a second installation hole on the top thereof, the second installation box is fixedly installed below the fixed plate, the rotating shaft penetrates the second installation hole into the second installation box, and extends to the bottom of the second installation box, and is rotatably connected to the bottom of the second installation box; A worm gear is fixedly arranged on the rotating shaft; A worm, both ends of which are rotatably arranged on the second mounting box, the worm is meshed with the worm wheel, and one end of the worm extends out of the second mounting box to facilitate mounting of a second handle on the worm; A self-locking mechanism is provided at the other end of the worm to prevent the worm from rotating after the adjustment of the second reflector is completed; When the angle of the second reflector needs to be adjusted, the self-locking mechanism is opened, and the worm is rotated by the second handle to drive the rotating shaft to rotate, thereby driving the first installation box to rotate to achieve the angle adjustment of the second reflector.

[0011] Preferably, the fixing column comprises: A top column, which has a rectangular cross section; A bottom column, the upper end of which is provided with a slide groove, the middle part of the bottom column is a hollow structure, and the side part of the middle part of the bottom column is provided with a pipe hole; A spring is arranged in the middle of the bottom column, the upper end of the spring is connected to the top column, and the lower end of the spring is fixedly connected to the bottom column; The expansion monitoring mechanism penetrates into the interior of the bottom column through the pipe hole and is fixedly connected to the bottom of the top column. The expansion monitoring mechanism is arranged on the embankment and located on both sides of the fixed column to expand the monitoring range.

[0012] Preferably, the expanded monitoring agencies include: At least one expansion column, which is pre-buried on the embankment to be monitored and located on the side of the fixed column; The main connecting rope has one end passing through the pipe hole and connected to the bottom of the top column, and the expansion column is connected to the main connecting rope through the connecting branch rope; A sleeve, which is arranged on the outside of the connecting main rope and connecting branch ropes; Among them, holes are drilled on the embankment on the side of the fixed column to embed the expansion monitoring column, and the expansion monitoring column and the top column are connected by using a connecting main rope and a connecting branch rope. The connecting main rope and the connecting branch rope are both in a tensioned state to keep the spring in a compressed state.

[0013] Preferably, the reflection unit comprises a second reflector and a plurality of filters, the plurality of filters are arranged in a linear array, and the filters form an angle with the second reflector so that the laser reflected by the second reflector is transmitted to the target screen after passing through the filters.

[0014] Preferably, it further comprises a reference verification laser unit, which is arranged on a fixed base surface away from the dam, and the laser emitted by the reference verification laser unit is opposite to the target screen.

[0015] The present invention has at least the following beneficial effects: First, the present invention can provide a plurality of reflective units on the dam. The number of target screens used is reduced, and the monitoring cost of the dam is reduced. Second, the present invention can increase the monitoring area of ​​a single reflective unit by adding an expansion monitoring mechanism, and reduce the number of reflective units installed on the dam, which increases the accuracy of the monitoring results and avoids the impact of more reflective units on the appearance of the dam. Third, the connection structure of the present invention realizes the height and left and right rotation adjustment of the second reflector, which is convenient for the installation and adjustment of the reflective unit.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a technical solution of the present invention; Figure 2 A schematic diagram of the structure of a laser emitting unit according to a technical solution of the present invention; Figure 3 A schematic diagram of the structure of the connection between the reflection unit and the expansion monitoring unit of a technical solution of the present invention; Figure 4 A schematic diagram of the structure of a self-locking mechanism of a technical solution of the present invention; Figure 5 This is a schematic diagram of the connection structure of a connecting main rope and connecting branch ropes according to a technical solution of the present invention.

[0018] 1. Laser emitting unit; 101. Shell; 102. Laser chip; 103. Mounting tube; 104. Arc hole; 2. Reflection unit; 201. Second reflector; 202. Bottom column; 203. Fixing plate; 204. Rotating shaft; 205. First mounting box; 206. First threaded rod; 207. Sliding block; 208. Second mounting box; 209. Worm; 210. Top column; 211. Spring; 3. Target screen; 4. Dam; 601. Expansion column; 602. Casing; 603. Connecting main rope; 604. Connecting branch rope; 605. Guide; 606. Tee; 701. First limit tooth; 702. Second limit tooth; 703. Locking rod; 704 Tension spring. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0020] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0021] It should be noted that in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or connected or set in one piece. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The orientations or positional relationships indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figure 1-5 As shown, the present invention provides a dam settlement monitoring device, which includes: A laser emitting unit 1, which is arranged on a fixed base surface away from the dam 4; A plurality of reflector units 2 are arranged at intervals on a dam 4 where settlement monitoring is required; A target screen 3, which is arranged on a fixed base surface far away from the dam 4; A data processing unit, which is electrically connected to the laser emitting unit 1 and the target screen 3; Among them, multiple laser beams emitted by the laser emitting unit 1 are respectively reflected to the target screen 3 by the reflecting unit 2, and the imaging unit in the target screen 3 images the light beams on the target screen 3 to obtain image information, and the image information is transmitted to the data processing unit through the communication unit. The data processing unit compares the received image information with the pre-stored information to determine whether the dam 4 has settled.

[0023] In this technical solution, the laser emitting unit 1 and the target screen 3 are fixed on a stable base surface away from the dam 4 by a fixing rod or a fixing frame. The reflecting unit 2 is fixed on the dam 4 for settlement monitoring by a fixing rod. The laser emitting unit 1 can emit multiple laser beams corresponding to the number of reflecting units 2. The target screen 3 is a prior art, and the target screen 3 structure provided in CN113237426A can be adopted.

[0024] The working principle of this technical solution is as follows: the reflection unit 2 is provided with a corresponding code, and the code is correspondingly stored in the data processing unit. The data processing unit controls the laser emitting unit 1 to emit the corresponding laser according to the code sequence. The laser beam is reflected to the target screen 3 through the reflection unit 2. The imaging unit in the target screen images the light beam reflected to the target screen. The image information is transmitted to the data processing unit through the communication unit. The data processing unit retrieves the corresponding pre-stored data and performs comparison and analysis to determine whether the dam 4 has settled. More specifically, in some technical solutions, when the dam 4 settles, the laser will reflect the light beam through different positions of the reflection unit 2. Filters can be set at different heights of the reflection unit 2 to change the color of the light reflected by the reflection unit 2, so that the imaging color on the target screen 3 is different, thereby realizing the judgment of the settlement.

[0025] In another technical solution, the laser emitting unit 1 includes a shell 101, a plurality of laser chips 102 and a mounting tube 103 corresponding to the laser chip 102. The shell 101 forms a receiving cavity with an open end. The open end of the shell 101 is a light outlet. The laser chip 102 is fixedly arranged in the mounting tube 103. The mounting tube 103 is rotatably arranged in the receiving cavity.

[0026] In this technical solution, a plurality of laser chips 102 are correspondingly arranged in the mounting tube 103 , and the angle of the mounting tube 103 is adjusted so that the laser beam generated by the laser chip 102 is transmitted to the reflection unit 2 , and the reflection unit 2 then reflects the beam to the target screen 3 .

[0027] In another technical solution, Figure 2 As shown, one end of the mounting cylinder 103 is hinged to the shell 101, and the other end is provided with an adjusting screw, the shell 101 is provided with an arc hole 104, the free end of the adjusting screw passes through the arc hole 104, and a nut is provided on the adjusting screw. The mounting cylinder 103 is fixed by the nut abutting against the shell 101. More specifically, when there is only one row of laser chips, one end of the mounting cylinder 103 is hinged to the upper and lower sides of the shell 101, the upper end of the shell 101 is provided with an arc hole 104, the opening direction of the arc hole 104 is the same as the opening direction of the shell 101, and the other end of the mounting cylinder 103 is provided with an adjusting screw corresponding to the arc hole 104. When there are two rows of laser chips, a mounting plate is provided in the middle of the shell 101, one side of the mounting tube 103 is hinged to the shell 101, and the other side is hinged to the mounting plate, and arc holes 104 are provided on the upper and lower sides of the shell 101. The adjusting screw of the upper mounting tube 103 passes through the arc hole 104 on the upper side of the shell 101 and is connected to the nut to fix the upper mounting tube 103. The adjusting screw of the lower mounting tube 103 passes through the arc hole 104 on the lower side of the shell 101 and is connected to the nut to fix the lower mounting tube 103.

[0028] In another technical solution, the reflection unit 2 includes a fixed column and a second reflector 201. The fixed column is fixed on the dam 4 that needs to be monitored for settlement. The second reflector 201 is arranged on the fixed column through a connection structure so that the second reflector 201 can swing up and down and left and right. The light beam generated by the laser unit is reflected by the reflection unit 2 and delivered to the target screen 3, so that the reflection unit 2 needs to be at a suitable height and angle. The present invention utilizes the characteristics of the connection structure that can be adjusted up and down and left and right, so that after the fixed column is installed, it is easy to adjust the height and angle of the second reflector 201 to achieve reflection to the target screen 3.

[0029] In another technical solution, the connection structure includes: A fixing plate 203, which is fixedly connected to the top of the fixing column, and a first mounting hole is provided at the free end of the fixing plate 203; A height adjustment mechanism, the bottom of which is provided with a rotating shaft 204, the rotating shaft 204 passes through the first mounting hole so as to rotatably arrange the height adjustment mechanism above the fixing plate 203, and the height adjustment mechanism is fixedly connected to the second reflector 201; The left-right adjustment mechanism is arranged below the fixing plate 203 and is connected to the rotating shaft 204 to adjust the angle of the height adjustment mechanism.

[0030] The height adjustment mechanism and the left-right adjustment mechanism of the technical solution realize the height and angle adjustment of the second reflector 201 .

[0031] In another technical solution, the height adjustment mechanism includes: The first installation box 205 has a long through hole on its front side, and the rotating shaft 204 is arranged at the bottom of the first installation box 205; A first threaded rod 206, both ends of which are rotatably connected to the upper and lower ends of the first installation box 205, the upper end of the first threaded rod 206 passes through the upper end of the first installation box 205, and the upper end of the first threaded rod 206 is provided with a first handle; The slider 207 is a T-shaped structure. A first threaded hole is provided on a horizontal portion of the slider 207. The first threaded rod 206 is threadedly connected to the first threaded hole. A vertical portion of the slider 207 extends out of the first installation box 205 through a long strip through hole. The second reflector 201 is fixedly connected to a vertical portion of the slider 207. The first threaded rod 206 is rotated by the first handle to drive the second reflector 201 to move up and down.

[0032] In this technical solution, the internal cross-section of the first installation box 205 is rectangular, and the cross-section of the slider 207 is also rectangular. The size of the slider 207 is adapted to the interior of the first installation box 205, so that when the first threaded rod 206 rotates, the second reflector 201 can be driven to move up and down through the up and down movement of the slider 207.

[0033] In another technical solution, the left and right adjustment mechanism includes: The second installation box 208 has a second installation hole on its top. The second installation box 208 is fixedly installed below the fixed plate 203. The rotating shaft 204 penetrates through the second installation hole and penetrates into the second installation box 208, and extends to the bottom of the second installation box 208, and is rotatably connected to the bottom of the second installation box 208. A worm gear fixedly mounted on the rotating shaft 204; A worm 209, both ends of which are rotatably disposed on the second mounting box 208, the worm 209 is meshed with the worm wheel, and one end of the worm 209 extends out of the second mounting box 208 to facilitate mounting of a second handle on the worm 209; A self-locking mechanism is provided at the other end of the worm 209 to prevent the worm 209 from rotating after the adjustment of the second reflector 201 is completed; When the angle of the second reflector 201 needs to be adjusted, the self-locking mechanism is opened, and the worm 209 is rotated by the second handle to drive the rotating shaft 204 to rotate, thereby driving the first installation box 205 to rotate to achieve the angle adjustment of the second reflector 201 .

[0034] When the worm 209 rotates, it drives the worm wheel to rotate, and then drives the first installation box 205 to rotate, thereby changing the angle of the second reflector 201. The self-locking mechanism can lock the worm 209 to prevent the second reflector 201 from rotating at will.

[0035] Self-locking mechanisms may include: A first limiting toothed disc 701, which is disposed outside the second mounting box 208 and is fixedly connected to the other end of the worm 209; The diameter of the second limiting toothed disc 702 is greater than that of the first limiting toothed disc 701. The second limiting toothed disc 702 is provided with at least two rod holes. The first limiting toothed disc 701 and the second limiting toothed disc 702 are provided with first limiting teeth and second limiting teeth on adjacent surfaces thereof, respectively. The first limiting teeth and the second limiting teeth are meshed with each other. The locking rods 703 are corresponding to the number of the rod holes, and the locking rods 703 are fixedly arranged on the outside of the second installation box 208, and the locking rods 703 pass through the rod holes; The number of tension springs 704 corresponds to that of the locking rod 703 , and the tension spring 704 is sleeved in the locking rod 703 . When the tension spring 704 is in an initial state, the second limiting tooth abuts against the first limiting tooth.

[0036] When the worm 209 needs to be rotated, the second limiting toothed disc 702 is pulled to disengage it from the first limiting toothed disc 701 , and the worm 209 can be rotated.

[0037] In another technical solution, the fixing column includes: A top column 210, whose cross section is rectangular; A bottom column 202, the upper end of which is provided with a slide groove, the middle part of the bottom column 202 is a hollow structure, and the side of the middle part of the bottom column 202 is provided with a pipe hole; A spring 211 is disposed in the middle of the bottom column 202, the upper end of the spring 211 is connected to the top column 210, and the lower end is fixedly connected to the bottom column 202; The monitoring expansion mechanism extends into the interior of the bottom column 202 through the pipe hole and is fixedly connected to the bottom of the top column 210. The monitoring expansion mechanism is arranged on the dam 4 and is located on both sides of the fixed column to expand the monitoring range.

[0038] In the present technical solution, the monitoring range of a reflective unit 2 can be expanded by using an expansion monitoring mechanism. Specifically, a plurality of expansion monitoring mechanisms are arranged on both sides of the fixed column from near to far. When the dam 4 at a certain place settles, since the spring 211 is in a non-completely compressed state in the initial state and can continue to be compressed under the action of external force, the expansion monitoring mechanism can transmit the settlement information to the top column 210, thereby changing the height of the second reflector 201, thereby realizing settlement monitoring of places outside the fixed column.

[0039] In another technical solution, the expanded monitoring agency includes: At least one expansion monitoring column 601, which is pre-buried on the dam 4 to be monitored and located on the side of the fixed column; A connecting main rope 603, one end of which passes through the pipe hole and is connected to the bottom of the top column 210, and the expansion monitoring column 601 is connected to the connecting main rope 603 through the connecting branch rope 604; A sleeve 602 is sleeved on the outside of the connecting main rope 603 and the connecting branch rope 604; Among them, a hole is drilled on the dam 4 on the side of the fixed column to pre-embed the expansion monitoring column 601, and the expansion monitoring column 601 is connected to the top column 210 by using a connecting main rope 603 and a connecting branch rope 604. The connecting main rope 603 and the connecting branch rope 604 are both in a tensioned state to put the spring 211 in a compressed state.

[0040] Multiple expansion columns 601 on the same side are connected to the connecting main rope 603 through connecting branch ropes 604. The connecting main rope 603 is connected to the bottom of the top column 210. The outer sides of the connecting main rope 603 and the connecting branch rope 604 are both sleeved with sleeves 602 to facilitate the sliding of the rope body. When the embankment 4 sinks at a certain place, the expansion column 601 sinks with the embankment 4, dragging the connecting main rope 603, and then driving the top column 210 to descend, so that the light beam is irradiated on different positions of the reflection unit 2. More specifically, the outer side of the connecting main rope is the main sleeve, and the outer side of the connecting branch rope 604 is sleeved with a branch sleeve. A tee 606 is provided on the main sleeve, and the tee 606 is connected to the branch sleeve. A guide 605 is provided at the tee 606. After the connecting branch rope 604 bypasses the guide 605, it is led out through the tee 606 and connected to the top of the expansion column.

[0041] In another technical solution, a reference verification laser unit is further included, which is arranged on a fixed base surface away from the dam 4, and the laser emitted by the reference verification laser unit is opposite to the target screen 3. By setting the reference verification laser unit, it can be determined whether settlement occurs at the positions of the laser emitting unit 1 and the target screen 3.

[0042] In another technical solution, the reflection unit 2 includes a second reflector 201 and a plurality of filters, which are arranged in a linear array. The filters are at an angle to the second reflector 201 so that the laser reflected by the second reflector 201 is transmitted to the target screen 3 after passing through the filters.

[0043] When the fixed column sinks, the laser generated by the laser generating unit will pass through different filters after being reflected by the second reflector 201. The light beam will pass through different filters and obtain light of different colors on the target screen 3. By comparing and analyzing the acquired image color or spectrum information with the pre-stored data information, it can be determined whether the dam 4 sinks and the amount of sinking can be obtained. If the yellow color in the pre-stored data information corresponds to a sinking of 5 cm, then when the reflected light beam is yellow, it means that the dam 4 has sunk by 5 cm.

[0044] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A dam settlement monitoring device, characterized in that: include: A laser emitting unit is arranged on a fixed base surface far away from the dam; A number of reflector units are arranged at intervals on the embankment where settlement monitoring is required; A target screen is arranged on a fixed base surface far away from the dam; A data processing unit, which is connected to the laser emitting unit and the target screen by electrical signals; Among them, multiple laser beams emitted by the laser emitting unit are reflected to the target screen by the reflecting unit respectively, and the imaging unit in the target screen images the light beams on the target screen. The image information is transmitted to the data processing unit through the communication unit. The data processing unit compares the received image information with the pre-stored information to determine whether the dam has settled.

2. The dam settlement monitoring device according to claim 1, characterized in that: The laser emitting unit includes a shell, a plurality of laser chips and a mounting tube corresponding to the laser chip. A receiving cavity with an open end is formed in the shell, and the open end of the shell is a light outlet. The laser chip is fixedly arranged in the mounting tube, and the mounting tube is rotatably arranged in the receiving cavity.

3. The dam settlement monitoring device according to claim 2, characterized in that: One end of the mounting cylinder is hinged to the shell part, and the other end is provided with an adjusting screw rod. The shell part is provided with an arc hole, and the free end of the adjusting screw rod passes through the arc hole. A nut is provided on the adjusting screw rod.

4. The dam settlement monitoring device according to claim 1, characterized in that: The reflection unit comprises a fixed column and a second reflector. The fixed column is fixed on the dam which needs to be monitored for settlement. The second reflector is arranged on the fixed column through a connecting structure so that the second reflector can swing up and down and left and right.

5. The dam settlement monitoring device according to claim 4, characterized in that: The connection structure comprises: A fixing plate, which is fixedly connected to the top of the fixing column, and a first mounting hole is provided at a free end of the fixing plate; A height adjustment mechanism, the bottom of which is provided with a rotating shaft, the rotating shaft passes through the first mounting hole so as to rotatably arrange the height adjustment mechanism above the fixing plate, and the height adjustment mechanism is fixedly connected to the second reflector; The left-right adjustment mechanism is arranged below the fixing plate, and the left-right adjustment mechanism is connected to the rotating shaft to adjust the rotation of the height adjustment mechanism.

6. The dam settlement monitoring device according to claim 5, characterized in that: The height adjustment mechanism includes: A first installation box is provided with a long strip through hole on the front side, and a rotating shaft is provided at the bottom of the first installation box; A first threaded rod, both ends of which are rotatably connected to the upper and lower ends of the first installation box, the upper end of the first threaded rod passes through the upper end of the first installation box, and the upper end of the first threaded rod is provided with a first handle; The slider is a T-shaped structure, a horizontal portion of the slider is provided with a first threaded hole, a first threaded rod is threadedly connected to the first threaded hole, a vertical portion of the slider extends out of the first installation box through the long strip through hole, and a second reflector is fixedly connected to the vertical portion of the slider; The first threaded rod is rotated by the first handle to drive the second reflecting mirror to move up and down.

7. The dam settlement monitoring device according to claim 5, characterized in that: The left and right adjustment mechanisms include: A second installation box is provided with a second installation hole on the top thereof, the second installation box is fixedly installed below the fixed plate, the rotating shaft penetrates the second installation hole into the second installation box, and extends to the bottom of the second installation box, and is rotatably connected to the bottom of the second installation box; A worm gear is fixedly arranged on the rotating shaft; A worm, both ends of which are rotatably arranged on the second mounting box, the worm is meshed with the worm wheel, and one end of the worm extends out of the second mounting box to facilitate mounting of a second handle on the worm; A self-locking mechanism is provided at the other end of the worm to prevent the worm from rotating after the adjustment of the second reflector is completed; When the angle of the second reflector needs to be adjusted, the self-locking mechanism is opened, and the worm is rotated by the second handle to drive the rotating shaft to rotate, thereby driving the first installation box to rotate to achieve the angle adjustment of the second reflector.

8. The dam settlement monitoring device according to claim 4, characterized in that: The fixing column comprises: A top column, which has a rectangular cross section; A bottom column, the upper end of which is provided with a slide groove, the middle part of the bottom column is a hollow structure, and the side part of the middle part of the bottom column is provided with a pipe hole; A spring is arranged in the middle of the bottom column, the upper end of the spring is connected to the top column, and the lower end of the spring is fixedly connected to the bottom column; The expansion monitoring mechanism penetrates into the interior of the bottom column through the pipe hole and is fixedly connected to the bottom of the top column. The expansion monitoring mechanism is arranged on the embankment and located on both sides of the fixed column to expand the monitoring range.

9. The dam settlement monitoring device according to claim 4, characterized in that: The expanded regulatory agencies include: At least one expansion column, which is pre-buried on the embankment to be monitored and located on the side of the fixed column; The main connecting rope has one end passing through the pipe hole and connected to the bottom of the top column, and the expansion column is connected to the main connecting rope through the connecting branch rope; A sleeve, which is arranged on the outside of the connecting main rope and connecting branch ropes; Among them, holes are drilled on the embankment on the side of the fixed column to embed the expansion monitoring column, and the expansion monitoring column and the top column are connected by using a connecting main rope and a connecting branch rope. The connecting main rope and the connecting branch rope are both in a tensioned state to keep the spring in a compressed state.

10. The dam settlement monitoring device according to claim 1, characterized in that: The reflection unit comprises a second reflector and a plurality of filters, which are arranged in a linear array. The filters and the second reflector form an angle so that the laser reflected by the second reflector is transmitted to the target screen after passing through the filters.

Images