A displacement measuring device based on laser measurement technology

Abstract

This invention relates to the field of laser displacement measurement technology, and more particularly to a displacement measuring device based on laser measurement technology. It includes: a clamping ring; a rotating toothed ring rotatably connected to the clamping ring, the central axis of the rotating toothed ring coinciding with the central axis of the clamping ring; several tension ropes used to increase the clamping force of the clamping ring; a laser detection component installed on one side of the clamping ring, used to detect the displacement between the clamping ring and the bridge pier; and a drive component disposed on one side of the clamping ring. This invention increases the contact area and friction between the device and the bridge pier by spirally winding several tension ropes around the outside of the bridge pier. When the clamping ring's tightness decreases, the tension ropes elastically absorb the vibration force generated by vehicle movement, improving the stability of the device and preventing the vibration force from vehicle movement from affecting the detection accuracy of the device.

Description

Technical Field

[0001] This invention relates to the field of laser displacement measurement technology, and in particular to a displacement measurement device based on laser measurement technology. Background Technology

[0002] Bridge piers are key components supporting the bridge superstructure, bearing the weight of the bridge and the loads of passing vehicles and pedestrians. They must remain stable under various environmental conditions. However, bridge piers can settle due to various factors such as changes in geological conditions, construction quality issues, environmental factors, overloading, or improper maintenance. To ensure the safety and stability of the bridge, regular monitoring and maintenance of the piers are necessary to promptly detect and address settlement problems. Laser displacement detection for bridge piers is a non-contact measurement technology primarily used to monitor displacement changes in the bridge structure. The main method for detecting bridge pier settlement involves emitting a laser beam from a laser displacement measuring device, which then illuminates the surface of the target object. The laser displacement measurement device is reflected back from the bridge pier, and the distance is calculated by calculating the time difference or phase difference between the laser emission and reception. This measurement method requires fixing the laser displacement measurement device at a specific position on the bridge pier. However, most existing laser displacement measurement devices are fixed by two methods: clamp fixing and drilling fixing. Clamp fixing is widely used because it can fix the laser displacement measurement device without damaging the bridge pier's own structure. However, after long-term use, the clamp will become less tight due to aging and wear. When vehicles pass over the bridge, they will generate vibration force. The clamp cannot absorb the vibration force, causing the laser displacement measurement device to vibrate synchronously, reducing the accuracy of the laser displacement measurement device. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides a displacement measuring device based on laser measurement technology.

[0004] The technical solution is: a displacement measuring device based on laser measurement technology, comprising:

[0005] Hoop ring;

[0006] A rotating toothed ring is rotatably connected to the clamping ring, and the central axis of the rotating toothed ring coincides with the central axis of the clamping ring, which is used to increase the stability of the clamping ring;

[0007] A plurality of tension ropes are provided, and the plurality of tension ropes are detachably connected between the rotating toothed ring and the clamping ring. The tension ropes are used to increase the clamping force of the clamping ring.

[0008] A laser detection component is installed on one side of the clamp ring, and the laser detection component is used to detect the displacement between the clamp ring and the pier;

[0009] A drive assembly is disposed on one side of the clamp ring, and the drive assembly is used to continuously apply rotational force to the rotating gear ring.

[0010] Preferably, the driving component includes:

[0011] A first gear is rotatably connected to one side of the clamping ring and meshes with the rotating gear ring. A second gear is rotatably connected to the first gear. A first elastic element is provided between the first gear and the second gear, and the first elastic element is used to apply a continuous torque to the first gear.

[0012] A power-saving limiting component is disposed on one side of the clamp ring and is used to limit the second gear in one direction.

[0013] Preferably, the energy storage limiting component includes:

[0014] A fixing bracket is fixedly connected to one side of the clamp ring;

[0015] A speed reducer is fixedly connected to the fixed frame. A third gear is fixedly connected to the output end of the speed reducer. The third gear meshes with the second gear. The speed reducer is used to limit the rotation direction of the second gear.

[0016] The rotating fan blades are rotatably connected to the fixed frame. The input end of the reducer is splinedly connected to the docking shaft. The rotating fan blades are used to obtain external wind force and drive the docking shaft to rotate.

[0017] A docking assembly is disposed on the docking shaft, and the docking assembly is used to dock the rotating fan blade with the docking shaft.

[0018] Preferably, the docking component includes:

[0019] The first docking block is fixedly connected to the top end of the docking shaft;

[0020] The second docking block is disposed at the bottom of the rotating fan blade. The adjacent planes of the first docking block and the second docking block are located on the same plane, and the two are mutually restrictive and engaged.

[0021] A detection component is disposed on the fixed frame. The detection component is used to detect the degree of torque accumulated in the first elastic element and drive the docking shaft to dock with the rotating fan blade.

[0022] Preferably, the detection component includes:

[0023] The first elastic push rod is fixedly connected to the fixed frame. The telescopic end of the first elastic push rod is in contact with the outside of the first elastic element. The first elastic push rod is used to detect the degree of torsion of the first elastic element.

[0024] The second elastic push rod is fixedly connected to the fixed frame. The telescopic end of the second elastic push rod is rotatably connected to the docking shaft. The second elastic push rod is used to push the docking shaft to dock with the rotating fan blade. The first elastic push rod fixing part and the second elastic push rod fixing part are fixedly connected and connected by a connecting pipe.

[0025] Preferably, the elastic force of the first elastic element is greater than the sum of the elastic forces of the first elastic push rod and the second elastic push rod, and the cross-sectional area of ​​the fixed part of the first elastic push rod is greater than the cross-sectional area of ​​the fixed part of the second elastic push rod, so as to expand the movement stroke of the second elastic push rod.

[0026] As a preferred option, it also includes:

[0027] A rotating ring is rotatably connected inside the rotating fan blade, and the rotating ring is fixedly connected to the second docking block;

[0028] A second elastic element is disposed between the rotating ring and the rotating fan blade;

[0029] A friction assembly is disposed inside the rotating fan blade, and the friction assembly is used to absorb the impact force of the first mating block and the second mating block.

[0030] Preferably, the rotating fan blade is circumferentially slidably connected to at least one centrifugal element, which is used to detect the rotational speed of the rotating fan blade.

[0031] Preferably, the friction assembly includes:

[0032] Friction sleeve, splinedly connected to the swivel ring;

[0033] A friction disc is fixedly connected inside the rotating fan blade, and the friction sleeve is fitted with the friction disc;

[0034] At least one elastic pull cord is fixedly connected between the adjacent centrifugal element and the friction sleeve.

[0035] Preferably, the elastic force of the elastic rope is greater than the weight of the friction sleeve, so that the centrifugal component first pulls the friction sleeve to fit against the friction disc.

[0036] The beneficial effects of the present invention are as follows: 1. The present invention increases the contact area and friction between the device and the bridge pier by spirally winding several taut ropes around the outside of the bridge pier. After the tightness of the clamp ring decreases, the taut rope will elastically absorb the vibration force generated when the vehicle is driving, thereby improving the stability of the device and avoiding the impact of the vibration force of the vehicle on the detection accuracy of the device.

[0037] 2. The torque is stored by the first elastic element and is always applied to several tension ropes by the first gear and the rotating gear ring. This ensures that even after wear occurs, the tension ropes remain in contact with the bridge column under the torque of the first elastic element, thus stabilizing the contact force between the tension ropes and the bridge column.

[0038] 3. By detecting the radius of the first elastic element, i.e. the degree of torsion of the first elastic element, and by using external airflow to autonomously restore the torsion of the first elastic element to its initial state, the torsional force applied by the first gear to several tension ropes is restored, so that the adhesion force of the tension ropes to the bridge column is restored to its initial state.

[0039] 4. The centrifugal component detects the airflow velocity of the outside air and adjusts the sliding friction between the friction sleeve and the friction disc according to the airflow velocity. This allows the sliding friction between the friction sleeve and the friction disc to convert the impact kinetic energy of the first and second docking blocks into heat energy, thereby reducing the impact damage between the first and second docking blocks. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0041] Figure 2 This is a three-dimensional structural diagram of the first gear and the second gear of the present invention;

[0042] Figure 3 This is a three-dimensional structural diagram of the speed reducer and rotating fan blades of the present invention;

[0043] Figure 4 This is a three-dimensional cross-sectional view of the rotating fan blades of the present invention;

[0044] Figure 5 This is a three-dimensional structural diagram of the centrifugal component and the elastic pull rope of the present invention;

[0045] Figure 6 This is a three-dimensional cross-sectional view of the friction sleeve and friction disc of the present invention.

[0046] The following are the label names in the diagram: 1. Clamping ring, 2. Rotating gear ring, 3. Tightening rope, 4. Laser detection component, 5. First gear, 6. Second gear, 7. First elastic element, 201. Fixing frame, 202. Reducer, 203. Rotating fan blade, 204. Third gear, 205. Connecting shaft, 206. First connecting block, 207. Second connecting block, 301. First elastic push rod, 302. Second elastic push rod, 303. Connecting pipe, 401. Rotating ring, 402. Second elastic element, 403. Friction sleeve, 404. Friction disc, 405. Centrifugal component, 406. Elastic pull rope. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0048] Existing laser displacement measuring devices are usually installed on bridge piers by clamping or drilling. Clamping is widely used because it can fix the laser displacement measuring device without damaging the bridge pier's own structure. However, over time, the clamps will become less secure due to aging and wear. When vehicles pass over the bridge, they will generate vibrations. The clamps cannot effectively absorb these vibrations, causing the laser displacement measuring device to vibrate synchronously, which affects the accuracy of its measurement.

[0049] Example 1: A displacement measuring device based on laser measurement technology, such as Figure 1 and Figure 2 As shown, it includes: a clamping ring 1; a rotating toothed ring 2, rotatably connected to the clamping ring 1, the central axis of the rotating toothed ring 2 coinciding with the central axis of the clamping ring 1, used to increase the stability of the clamping ring 1; tension ropes 3, of which there are several, several tension ropes 3 are detachably connected between the rotating toothed ring 2 and the clamping ring 1, the tension ropes 3 are used to increase the clamping force of the clamping ring 1; a laser detection component 4, installed on one side of the clamping ring 1, the laser detection component 4 is used to detect the displacement between the clamping ring 1 and the pier; and a drive component, set on one side of the clamping ring 1, the drive component is used to continuously apply rotational force to the rotating toothed ring 2.

[0050] The above solution aims to address the problem that rigid clamp fixation in existing technologies cannot absorb the vibration force generated during vehicle movement, thereby improving the accuracy of real-time measurement of bridge pier settlement. The clamp ring 1 is composed of two ring-shaped parts joined by bolts. Each ring-shaped part consists of two semi-rings, facilitating installation by personnel. Made of high-strength steel, it ensures the stability of the device. Similarly, the rotating gear ring 2 is composed of two semi-rings, forming a unified structure by aligning with the clamp ring 1. The tension rope 3 is evenly distributed circumferentially between the rotating gear ring 2 and the clamp ring 1 to uniformly offset vibration forces. The tension rope 3 must possess characteristics such as corrosion resistance, wear resistance, and a certain degree of elasticity, such as nylon rope, polyester rope, and hybrid rope, to maintain its structural characteristics even after prolonged use, effectively mitigating vibrations after vehicle movement. The device uses elastic absorption, and the tension rope 3 is detachable for easy maintenance and replacement, improving practicality. The laser detection component 4 consists of a laser sensor, a data calculation module, and an information transmission module. The laser sensor emits and receives the reflected laser light. The data calculation module calculates the time difference or phase difference between laser emission and reception to determine the distance. The information transmission module transmits the measured information to the receiving terminal in real time, facilitating centralized observation and processing by staff. Several tension ropes 3 are spirally wound around the outside of the bridge pier, increasing the contact area and friction between the device and the pier. At the same time, when the tightness of the clamp ring 1 decreases, the tension rope 3 will elastically absorb the vibration force generated by the vehicle, improving the stability of the device and preventing the vibration force from the vehicle from affecting the detection accuracy of the device.

[0051] like Figures 1-3 As shown, the drive assembly includes: a first gear 5, which is rotatably connected to one side of the clamping ring 1 and meshes with a rotating gear ring 2; a second gear 6 is rotatably connected to the first gear 5; a first elastic element 7 is provided between the first gear 5 and the second gear 6; the first elastic element 7 is used to apply a continuous torque to the first gear 5; and a power storage and limiting assembly, which is provided on one side of the clamping ring 1 and is used to limit the second gear 6 in one direction.

[0052] In the above scheme, the central axis of the second gear 6 coincides with the central axis of the first gear 5, and the first elastic element 7 between them is a torsion spring or a clockwork, used to rotate the second gear 6 to accumulate the torque of the first elastic element 7, so that the device is always in a torsional state after installation. The torque of the first elastic element 7 always acts on the first gear 5 after it is installed on the bridge column, and finally acts on the rotating gear ring 2, so that the several tension ropes 3 can still stick tightly to the bridge column after wear, and elastically absorb vibration. The first gear 5 and the rotating gear ring 2 are electroplated with chromium coating, which can enhance their hardness, wear resistance and corrosion resistance, so as to avoid friction damage and stress concentration caused by the force between them, which reduces the service life. The torque is accumulated by the first elastic element 7, and the torque is always applied to the several tension ropes 3 through the first gear 5 and the rotating gear ring 2, so that the tension ropes 3 can stick to the bridge column again under the action of the torque of the first elastic element 7 after wear, and stabilize the adhesion of the tension ropes 3 to the bridge column.

[0053] like Figure 3 and Figure 4 As shown, the power storage limiting assembly includes: a fixed frame 201, fixedly connected to one side of the clamp ring 1; a reducer 202, fixedly connected to the fixed frame 201, with a third gear 204 fixedly connected to the output end of the reducer 202, the third gear 204 meshing with the second gear 6, and the reducer 202 used to limit the rotation direction of the second gear 6; a rotating fan blade 203, rotatably connected to the fixed frame 201, with a splined connection to the input end of the reducer 202 to a docking shaft 205, the rotating fan blade 203 used to obtain external wind power and drive the docking shaft 205 to rotate; and a docking assembly, disposed on the docking shaft 205, the docking assembly used to dock the rotating fan blade 203 with the docking shaft 205.

[0054] In the above scheme, the reducer 202 is equipped with a one-way locking mechanism, which allows the reducer 202 to rotate in only one direction. This causes the third gear 204 to limit the first gear 5 in one direction, preventing the first elastic element 7, which has accumulated torque, from resetting in the reverse direction and thus preventing the application of torsional force to the several taut ropes 3. At the same time, the rotating fan blade 203 uses external wind power to restore the torque of the first elastic element 7 that has released part of the torque.

[0055] like Figure 3 and Figure 4 As shown, the docking assembly includes: a first docking block 206, fixedly connected to the top of the docking shaft 205; a second docking block 207, disposed at the bottom of the rotating fan blade 203, the adjacent planes of the first docking block 206 and the second docking block 207 are located on the same plane, and the two are mutually limiting and engaged; and a detection assembly, disposed on the fixing frame 201, which is used to detect the torque stored in the first elastic element 7 and drive the docking shaft 205 to dock with the rotating fan blade 203.

[0056] In the above scheme, after a portion of the torque of the first elastic element 7 is released, the first docking block 206 docks with the second docking block 207, so that the external wind drives the rotating fan blade 203 to rotate, and the docking shaft 205 is driven to rotate through the limiting docking of the first docking block 206 and the second docking block 207. Then, the reducer 202 converts the high torque into low torque, and the third gear 204 drives the second gear 6 to restore the elastic force of the first elastic element 7.

[0057] like Figure 3 and Figure 4 As shown, the detection assembly includes: a first elastic push rod 301, fixedly connected to the fixed frame 201, the telescopic end of the first elastic push rod 301 being in contact with the outside of the first elastic element 7, and the first elastic push rod 301 being used to detect the degree of torsion of the first elastic element 7; a second elastic push rod 302, fixedly connected to the fixed frame 201, the elastic force of the first elastic element 7 being greater than the sum of the elastic force of the first elastic push rod 301 and the elastic force of the second elastic push rod 302, the cross-sectional area of ​​the fixed part of the first elastic push rod 301 being greater than the cross-sectional area of ​​the fixed part of the second elastic push rod 302, for expanding the stroke of the second elastic push rod 302; the telescopic end of the second elastic push rod 302 being rotatably connected to the docking shaft 205, and the second elastic push rod 302 being used to push the docking shaft 205 to dock with the rotating fan blade 203; the fixed part of the first elastic push rod 301 and the fixed part of the second elastic push rod 302 being fixedly connected and connected by a connecting pipe 303.

[0058] In the above scheme, the telescopic end of the first elastic push rod 301 is fixedly connected to an arc-shaped plate, and the height and curvature are matched with the height and curvature of the torsion spring or clockwork selected for the first elastic element 7 to improve the sensitivity of the detection of the first elastic element 7. The fixed part of the first elastic push rod 301 and the fixed part of the second elastic push rod 302 are both filled with hydraulic oil. Since the cross-sectional area of ​​the fixed part of the first elastic push rod 301 is larger than the cross-sectional area of ​​the fixed part of the second elastic push rod 302, the stroke of the telescopic end of the second elastic push rod 302 is expanded, thereby improving the sensitivity of the device. By detecting the torsional state of the first elastic element 7, the rotating fan blade 203 is connected to the docking shaft 205, so that the rotating fan blade 203 can rotate freely when the torque of the first elastic element 7 is in the initial state. The force of the external airflow is offset by the rotation, avoiding the rotating fan blade 203 from being unable to rotate, causing internal stress concentration due to the airflow, and reducing its service life.

[0059] When it is necessary to detect the displacement of the bridge pier, the laser detection component 4 needs to be installed at a specific location on the bridge section. At this time, the worker attaches the clamp ring 1 to the required position on the bridge pier, and simultaneously rotates the gear ring 2 to assemble them into a whole. The worker then rotates the bolts to fix the clamp ring 1 to the required position on the bridge pier. Next, the worker rotates the first gear 5, which drives the gear ring 2 to rotate synchronously. The rotating gear ring 2 drives several tension ropes 3 on it to rotate synchronously, causing the tension ropes 3 to spirally wind around the outside of the bridge pier, increasing the contact area and friction between the device and the pier. Simultaneously, through its own elasticity... To absorb vibration and improve the stability of the device, the vibration generated by the vehicle's movement is prevented from affecting the detection accuracy of the laser detection component 4. This process continues until the rotating gear ring 2 can no longer rotate, i.e., the first gear 5 can no longer rotate. Then, the operator rotates the second gear 6. At this time, the rotation of the second gear 6 drives the first elastic element 7 to twist, causing the first elastic element 7 to start storing force. This continues until the first elastic element 7 stores the required force, and then the rotation of the second gear 6 is stopped. At this time, the laser detection component 4 is fixed. Then, the laser detection component 4 is turned on, and the laser detection component 4 emits infrared light to detect the distance between itself and the bridge pier.

[0060] After prolonged use, the tension rope 3 is prone to wear and tear due to friction between the tension rope 3 and the bridge pier caused by the vibration of vehicles traveling on the bridge. This reduces the contact area between the tension rope 3 and the bridge pier. When there is a strong wind, the lateral force generated by the wind on the device can easily cause a small gap to appear between the tension rope 3 and the bridge column, reducing the fastening force of the device. At this time, the first elastic element 7 begins to release its elastic force, resets and twists, and drives the first gear 5 to rotate. The rotation of the first gear 5 drives the rotating gear ring 2 to rotate synchronously. At this time, the rotating gear ring 2 drives the bottom of several tension ropes 3 to twist, and they come into contact with the outside of the bridge column again, so that the tension rope 3 restores the contact area between the tension rope 3 and the bridge pier, and restores the fastening force between the device and the bridge pier.

[0061] After the first elastic element 7 drives the first gear 5 to rotate, causing the tension rope 3 to fit against the bridge column, the accumulated elastic force of the first elastic element 7 decreases, and the radius of the first elastic element 7 increases. At this time, the first elastic element 7 pushes the telescopic end of the first elastic push rod 301 to slide inward. The telescopic end of the first elastic push rod 301 pushes the hydraulic oil in its fixed part into the connecting pipe 303, and flows into the fixed part of the second elastic push rod 302. At this time, the hydraulic oil in the fixed part of the second elastic push rod 302 pushes its telescopic end to move upward. The telescopic end of the second elastic push rod 302 drives the docking shaft 205 to move upward synchronously, causing the docking shaft 205 to drive the first docking block 206 on it to move upward synchronously. The docking shaft 205 drives the first docking block 206 into the interior of the rotating fan blade 203. When the external wind blows... The wind power drives the rotating fan blade 203 to rotate. The rotation of the rotating fan blade 203 drives the second docking block 207 inside it to rotate and contact the first docking block 206. At this time, the rotating fan blade 203 drives the docking shaft 205 to rotate through the second docking block 207 and the first docking block 206. The rotation of the docking shaft 205 drives the input end of the reducer 202 to rotate synchronously. At this time, the reducer 202 converts the input high torque into low torque. The output end of the reducer 202 drives the third gear 204 to rotate. The third gear 204 drives the second gear 6 to rotate, so that the rotation of the second gear 6 accumulates the torque of the first elastic element 7, so that the first elastic element 7 restores the initial torque, that is, restores the torsional force applied by the first gear 5 to several tension ropes 3, so that the adhesion force of the tension ropes 3 to the bridge column is restored to the initial state.

[0062] As the torque of the first elastic element 7 gradually resets, the radius of the first elastic element 7 gradually decreases, and the telescopic end of the first elastic push rod 301 gradually resets. At this time, the hydraulic oil in the fixed part of the second elastic push rod 302 gradually flows back to the fixed part of the first elastic push rod 301 along the connecting pipe 303. The telescopic end of the second elastic push rod 302 drives the docking shaft 205 to move downward, causing the docking shaft 205 to separate the first docking block 206 and the second docking block 207 on it. When the tension rope 3 is affected by the external wind force and separates from the bridge column again, the above steps are repeated.

[0063] In this embodiment, the connection between the rotating fan blade 203 and the second docking block 207 is a fixed connection, but this is limited to the first embodiment. In subsequent embodiments, the connection between the rotating fan blade 203 and the second docking block 207 is a rotating connection, as detailed in the subsequent embodiments.

[0064] Example 2: Based on Example 1, such as Figures 4-6As shown, it also includes: a rotating ring 401, rotatably connected inside the rotating fan blade 203, and the rotating ring 401 is fixedly connected to the second docking block 207; a second elastic element 402, disposed between the rotating ring 401 and the rotating fan blade 203; a friction assembly, disposed inside the rotating fan blade 203, the friction assembly being used to absorb the impact force of the first docking block 206 and the second docking block 207, and at least one centrifugal element 405 being circumferentially slidably connected to the rotating fan blade 203, the centrifugal element 405 being used to detect the rotation speed of the rotating fan blade 203.

[0065] like Figures 4-6 As shown, the friction assembly includes: a friction sleeve 403 splinedly connected to the rotating ring 401; a friction disk 404 fixedly connected to the inside of the rotating fan blade 203, with the friction sleeve 403 and the friction disk 404 in contact; and an elastic pull rope 406, at least one, fixedly connected between the adjacent centrifugal component 405 and the friction sleeve 403, wherein the elastic force of the elastic pull rope 406 is greater than the weight of the friction sleeve 403, and is used by the centrifugal component 405 to first pull the friction sleeve 403 to contact the friction disk 404.

[0066] In the above scheme, the second elastic element 402 is a torsion spring. The second elastic element 402 is used to offset part of the impact force of the first docking block 206 and the second docking block 207, and at the same time drive the second docking block 207 to reset. At least one centrifugal element 405 detects the rotation speed of the rotating fan blade 203 through centrifugal force. The weight and number of centrifugal elements 405 can be changed according to the actual situation. The friction sleeve 403 and the friction disk 404 convert the impact kinetic energy of the first docking block 206 and the second docking block 207 into frictional heat energy through frictional rotation. For example, the friction sleeve 403 and the friction disk 404... The mating surfaces of the disc 404 are all provided with a frosted rough surface. In other embodiments, the friction sleeve 403 and the friction disc 404 themselves can also be made of a rough material to avoid wear on the rough surface. The centrifugal component 405 detects the flow rate of the external airflow and adjusts the sliding friction between the friction sleeve 403 and the friction disc 404 according to the wind speed. The sliding friction between the friction sleeve 403 and the friction disc 404 converts the impact kinetic energy of the first docking block 206 and the second docking block 207 into heat energy, reducing the impact damage of the first docking block 206 and the second docking block 207 and extending the service life.

[0067] When the external wind drives the rotating fan blade 203 to rotate, the rotation of the rotating fan blade 203 drives the centrifugal component 405 on it to rotate synchronously. The centrifugal component 405 slides outward of the rotating fan blade 203 under the action of centrifugal force. At this time, the centrifugal component 405 drives the friction sleeve 403 to slide upward along the rotating ring 401 through the elastic pull rope 406. The friction sleeve 403 slides upward and comes into contact with the friction disk 404. At this time, the friction sleeve 403 can no longer move upward. Under the action of centrifugal force, the centrifugal component 405 pulls the elastic pull rope 406 and stretches it. The greater the stretch of the elastic pull rope 406, that is, the greater the contact force between the friction sleeve 403 and the friction disk 404, and thus the greater the friction between the two. When the docking shaft 205 drives the first docking block 206 into the interior of the rotating fan blade 203, the rotating fan blade 203 drives the second docking block 207 inside it to contact and impact the first docking block 206. At this time, the second docking block 207 is subjected to The force drives the rotating ring 401 to rotate synchronously. At this time, the second elastic element 402 is twisted. The compression of the second elastic element 402 absorbs part of the kinetic energy generated by the impact between the first docking block 206 and the second docking block 207. At the same time, the rotating ring 401 drives the friction sleeve 403 to rotate, so that the friction sleeve 403 is in contact with the friction disk 404 for friction and sliding. This continues until the second elastic element 402 is compressed to its limit. By detecting the speed of the external airflow, the sliding friction between the friction sleeve 403 and the friction disk 404 is automatically adjusted. The impact kinetic energy of the first docking block 206 and the second docking block 207 is converted into heat energy through the sliding friction between the friction sleeve 403 and the friction disk 404. This prevents the first docking block 206 and the second docking block 207 from breaking due to impact force after long-term use, which would prevent the rotating fan blade 203 from docking with the docking shaft 205 in time, and thus prevent the first elastic element 7 from storing energy.

[0068] When the first elastic element 7 is charged to the initial state, the telescopic end of the first elastic push rod 301 drives the first docking block 206 and the second docking block 207 to separate through the docking shaft 205. This continues until the external airflow ends. At this time, the rotating fan blade 203 stops rotating, the elastic pull rope 406 returns to the initial state, and the friction sleeve 403 separates from the friction disc 404. At this time, the second elastic element 402 returns to the initial state and drives the rotating ring 401 to return to the initial state, so that the second docking block 207 returns to the initial state. When the first elastic element 7 releases part of the torque again, the above steps are repeated.

[0069] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A displacement measuring device based on laser measurement technology, characterized in that: it includes... have: Clamping ring (1); Rotate the toothed ring (2) and rotate it to connect it to the clamp ring (1). The central axis of the rotating toothed ring (2) coincides with the central axis of the clamp ring (1) to increase the stability of the clamp ring (1). A number of tension ropes (3) are provided, and the tension ropes (3) are detachably connected between the rotating toothed ring (2) and the clamping ring (1). The tension ropes (3) are used to increase the fastening force of the clamping ring (1). A laser detection component (4) is installed on one side of the clamp ring (1). The laser detection component (4) is used to detect the displacement between the clamp ring (1) and the pier. A drive assembly is disposed on one side of the clamp ring (1), and the drive assembly is used to continuously apply rotational force to the rotating gear ring (2); The driving component includes: The first gear (5) is rotatably connected to one side of the clamp ring (1). The first gear (5) meshes with the rotating gear ring (2). The first gear (5) is rotatably connected to the second gear (6). A first elastic element (7) is provided between the first gear (5) and the second gear (6). The first elastic element (7) is used to apply a continuous torque to the first gear (5). A power storage limiting component is disposed on one side of the clamp ring (1) and is used to limit the second gear (6) in one direction. The energy storage limiting component includes: The fixing bracket (201) is fixedly connected to one side of the clamp ring (1); The speed reducer (202) is fixedly connected to the fixed frame (201). The output end of the speed reducer (202) is fixedly connected to a third gear (204). The third gear (204) meshes with the second gear (6). The speed reducer (202) is used to limit the rotation direction of the second gear (6). Rotating fan blades (203) are rotatably connected to the fixed frame (201). The input end of the reducer (202) is splinedly connected to the docking shaft (205). The rotating fan blades (203) are used to obtain external wind force and drive the docking shaft (205) to rotate. A docking assembly is disposed on the docking shaft (205), and the docking assembly is used to dock the rotating fan blade (203) with the docking shaft (205); The docking components include: The first docking block (206) is fixedly connected to the top end of the docking shaft (205); The second docking block (207) is disposed at the bottom of the rotating fan blade (203). The adjacent planes of the first docking block (206) and the second docking block (207) are located on the same plane and are mutually constrained. The detection component is mounted on the fixed frame (201). The detection component is used to detect the torque accumulated by the first elastic element (7) and drive the docking shaft (205) to dock with the rotating fan blade (203). The detection component includes: The first elastic push rod (301) is fixedly connected to the fixed frame (201). The telescopic end of the first elastic push rod (301) is in contact with the outside of the first elastic element (7). The first elastic push rod (301) is used to detect the degree of torsion of the first elastic element (7). The second elastic push rod (302) is fixedly connected to the fixed frame (201). The telescopic end of the second elastic push rod (302) is rotatably connected to the docking shaft (205). The second elastic push rod (302) is used to push the docking shaft (205) to dock with the rotating fan blade (203). The fixed part of the first elastic push rod (301) and the fixed part of the second elastic push rod (302) are fixedly connected and connected by a connecting pipe (303). The elastic force of the first elastic element (7) is greater than the sum of the elastic force of the first elastic push rod (301) and the elastic force of the second elastic push rod (302). The cross-sectional area of ​​the fixed part of the first elastic push rod (301) is greater than the cross-sectional area of ​​the fixed part of the second elastic push rod (302), which is used to expand the movement stroke of the second elastic push rod (302). Several of the aforementioned taut ropes (3) are spirally wound around the outside of the bridge pier.

2. A displacement measuring device based on laser measurement technology according to claim 1, characterized in that: it also... include: A rotating ring (401) is rotatably connected inside the rotating fan blade (203), and the rotating ring (401) is fixedly connected to the second docking block (207); The second elastic element (402) is disposed between the rotating ring (401) and the rotating fan blade (203); A friction assembly is disposed inside the rotating fan blade (203) and is used to absorb the impact force of the first mating block (206) and the second mating block (207).

3. A displacement measuring device based on laser measurement technology according to claim 2, characterized in that: The rotating fan blade (203) is circumferentially slidably connected to at least one centrifugal element (405), which is used to detect the rotational speed of the rotating fan blade (203).

4. A displacement measuring device based on laser measurement technology according to claim 3, characterized in that: The friction assembly includes: Friction sleeve (403) is splinedly connected to the swivel ring (401); The friction disc (404) is fixedly connected to the inside of the rotating fan blade (203), and the friction sleeve (403) is in contact with the friction disc (404); At least one elastic pull cord (406) is fixedly connected between the adjacent centrifugal element (405) and the friction sleeve (403).

5. A displacement measuring device based on laser measurement technology according to claim 4, characterized in that: The elastic force of the elastic rope (406) is greater than the weight of the friction sleeve (403), so that the centrifugal component (405) first pulls the friction sleeve (403) to fit against the friction disc (404).

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