Displacement measurement device based on laser measurement technology

Abstract

The invention relates to the technical field of laser displacement measurement, in particular to a displacement measurement device based on a laser measurement technology. Comprising a hoop ring; the rotating gear ring is rotationally connected to the hoop ring, and the central axis of the rotating gear ring coincides with the central axis of the hoop ring; the plurality of tightening ropes are arranged, and the tightening ropes are used for increasing the fastening force of the hoop ring; the laser detection assembly is installed on one side of the hoop ring, and the laser detection assembly is used for detecting the displacement amount between the hoop ring and the bridge pier; and the driving assembly is arranged on one side of the hoop ring. A plurality of tension ropes are spirally wound outside the pier, the contact area and friction force of the device and the pier are increased, after the fastening degree of the hoop ring is reduced, the tension ropes can elastically absorb vibration force generated when a vehicle runs, the stability of the device is improved, and the vibration force generated when the vehicle runs is prevented from influencing the detection precision of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of laser displacement measurement, and in particular to a displacement measurement device based on laser measurement technology. Background Art

[0002] The bridge columns are one of the key components supporting the superstructure of the bridge. They bear the weight of the bridge as well as the loads of passing vehicles and pedestrians, and need to remain stable under various natural environmental conditions. The bridge columns may sink due to various factors such as changes in geological conditions, construction quality problems, environmental factors, overload or improper maintenance. In order to ensure the safety and stability of the bridge, the bridge columns need to be monitored and maintained regularly to detect and solve the settlement problem in time. The laser displacement detection of bridge columns is a non-contact measurement technology, which is mainly used to monitor the displacement changes of bridge structures. The main method for detecting the settlement of bridge columns is to emit a laser beam through a laser displacement measurement device so that the beam is irradiated onto the surface of the target object. The light is reflected back from the surface and the distance is calculated. The distance is determined by calculating the time difference or phase difference between laser emission and reception. This measurement method requires the laser displacement measuring device to be fixed at a specific position of the bridge column. However, the existing laser displacement measuring devices are mostly fixed by clamps and drilling. Clamp fixing is widely used because it can fix the laser displacement measuring device without destroying the structure of the bridge column itself. However, the clamp will decrease in tightness due to aging and wear after long-term use. When a vehicle passes by the bridge, vibration force is generated, and the clamp cannot absorb the vibration force, resulting in synchronous vibration of the laser displacement measuring device, thereby reducing the measurement accuracy of the laser displacement measuring device. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, 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: Hoop ring; A rotating gear ring is rotatably connected to the hoop ring, wherein the central axis of the rotating gear ring coincides with the central axis of the hoop ring, so as to increase the stability of the hoop ring; A plurality of tension ropes are provided, wherein the plurality of tension ropes are detachably connected between the rotating gear ring and the hoop ring, and the tension ropes are used to increase the fastening force of the hoop ring; 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 bridge pier; A driving assembly is arranged on one side of the clamp ring, and the driving assembly is used to continuously apply a rotational force to the rotating gear ring.

[0005] Preferably, the driving assembly comprises: A first gear, the first gear is rotatably connected to one side of the hoop ring, the first gear is meshed with the rotating gear ring, the first gear is rotatably connected to a second 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; A force storage and limiting component is arranged on one side of the clamp ring, and is used for unidirectionally limiting the second gear.

[0006] Preferably, the force storage and limiting component comprises: A fixing frame, fixedly connected to one side of the clamp ring; A reducer, fixedly connected to the fixed frame, an output end of the reducer is fixedly connected to a third gear, the third gear is meshed with the second gear, and the reducer is used to limit the rotation direction of the second gear; The rotating fan blade is rotatably connected to the fixed frame, the input end of the reducer is spline-connected with a docking shaft, and the rotating fan blade is used to obtain external wind force and drive the docking shaft to rotate; A docking assembly is arranged on the docking shaft, and is used to dock the rotating fan blade with the docking shaft.

[0007] Preferably, the docking assembly comprises: A first docking block, fixedly connected to the top end of the docking shaft; A second docking block is arranged at the bottom of the rotating fan blade, and adjacent planes of the first docking block and the second docking block are located on the same plane, and the two are limitedly matched; A detection component is arranged on the fixing frame, and is used for detecting the torque accumulated in the first elastic element and driving the docking shaft to dock with the rotating fan blade.

[0008] Preferably, the detection component comprises: A first elastic push rod is fixedly connected to the fixing frame, a telescopic end of the first elastic push rod is in contact with the outside of the first elastic element, and the first elastic push rod is used to detect the degree of torsion of the first elastic element; 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, and the first elastic push rod fixing part and the second elastic push rod fixing part are fixedly connected and connected by a connecting pipe.

[0009] 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.

[0010] As a preference, it also includes: A rotating ring, rotatably connected to the inside of the rotating fan blade, and the rotating ring is fixedly connected to the second docking block; A second elastic element is disposed between the rotating ring and the rotating blade; A friction component is arranged inside the rotating fan blade, and the friction component is used to absorb the impact force of the first docking block and the second docking block.

[0011] Preferably, the rotating fan blade is circumferentially slidably connected with at least one centrifugal component, and the centrifugal component is used to detect the rotation speed of the rotating fan blade.

[0012] Preferably, the friction assembly comprises: A friction sleeve, spline-connected to the swivel; A friction disc is fixedly connected to the inside of the rotating blade, and the friction sleeve is in contact with the friction disc; At least one elastic drawstring is fixedly connected between the adjacent centrifugal member and the friction sleeve.

[0013] Preferably, the elastic force of the elastic pull rope is greater than the gravity of the friction sleeve, so that the centrifugal member first pulls the friction sleeve to fit the friction disk.

[0014] Beneficial effects of the present invention: 1. The present invention increases the contact area and friction between the device and the pier by spirally winding a plurality of tension ropes around the outside of the pier. After the tightness of the clamp ring decreases, the tension ropes will elastically absorb the vibration force generated by the vehicle when it is running, thereby improving the stability of the device and preventing the vibration force of the vehicle from affecting the detection accuracy of the device.

[0015] 2. The torque is accumulated through the first elastic element, and the torque is always applied to a plurality of tension ropes through the first gear and the rotating gear ring, so that after the tension ropes are worn, they always keep in contact with the bridge columns under the action of the torque of the first elastic element, thereby stabilizing the contact strength of the tension ropes with the bridge columns.

[0016] 3. By detecting the radius of the first elastic element, that is, the degree of torsion of the first elastic element, and using the external wind flow to autonomously twist the first elastic element to its initial state, the torsion force applied by the first gear to the plurality of tension ropes is restored, so that the fitting strength of the tension ropes to the bridge columns is restored to its initial state.

[0017] 4. The flow rate of the external wind flow is detected by the centrifugal part, and the sliding friction between the friction sleeve and the friction disk is adjusted autonomously according to the wind speed, so that the sliding friction between the friction sleeve and the friction disk converts the impact kinetic energy of the first docking block and the second docking block into heat energy, thereby reducing the impact damage between the first docking block and the second docking block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the first gear and the second gear of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the reducer and the rotating fan blades of the present invention; Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the rotating fan blade of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the centrifugal member and the elastic draw cord of the present invention; Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the friction sleeve and the friction disc of the present invention.

[0019] Names of the numbers in the figure: 1. clamp ring, 2. rotating gear ring, 3. tension rope, 4. laser detection component, 5. first gear, 6. second gear, 7. first elastic element, 201. fixed frame, 202. reducer, 203. rotating fan blade, 204. third gear, 205. docking shaft, 206. first docking block, 207. second docking block, 301. first elastic push rod, 302. second elastic push rod, 303. connecting pipe, 401. swivel, 402. second elastic element, 403. friction sleeve, 404. friction disk, 405. centrifugal part, 406. elastic pull rope. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Existing laser displacement measuring devices are usually installed on bridge columns by means of clamp fixation or drilling fixation. Clamp fixation is widely used because it can fix the laser displacement measuring device without destroying the structure of the bridge column itself. However, as time goes by, the clamp will reduce its tightness due to aging and wear. When a vehicle passes on the bridge, vibration force will be generated. At this time, the clamp cannot effectively absorb these vibrations, resulting in synchronous vibration of the laser displacement measuring device, affecting its measurement accuracy.

[0022] Embodiment 1: A displacement measuring device based on laser measurement technology, such as Figure 1 and Figure 2 As shown, it includes: a hoop ring 1; a rotating gear ring 2, which is rotatably connected to the hoop ring 1, and the central axis of the rotating gear ring 2 coincides with the central axis of the hoop ring 1, which is used to increase the stability of the hoop ring 1; a plurality of tension ropes 3, which are detachably connected between the rotating gear ring 2 and the hoop ring 1, and the tension ropes 3 are used to increase the tightening force of the hoop ring 1; a laser detection component 4, which is installed on one side of the hoop ring 1, and the laser detection component 4 is used to detect the displacement between the hoop ring 1 and the bridge pier; a driving component, which is arranged on one side of the hoop ring 1, and the driving component is used to continuously apply a rotational force to the rotating gear ring 2.

[0023] In the above scheme, it is intended to solve the problem in the prior art that the rigid fixation of the clamp cannot absorb the vibration force generated when the vehicle is running, so as to improve the accuracy of the real-time measurement of the bridge column settlement by this device. The clamp ring 1 is composed of two left and right ring parts spliced ​​by bolts. The ring part is composed of two upper and lower half rings, which is convenient for installation by workers. The material is high-strength steel to ensure the stability of the device fixation. The rotating gear ring 2 is similarly composed of two half rings, so that it follows the docking of the clamp ring 1 to form a whole. The tension rope 3 is circumferentially evenly spaced with the rotating gear ring 2 and the clamp ring 1 to uniformly offset the vibration force. The tension rope 3 needs to have the characteristics of corrosion resistance, wear resistance and certain elasticity. For example, nylon rope, polyester rope and mixed rope can still maintain their own structural characteristics after long-term use to resist the vibration after the vehicle runs. The tension rope 3 is detachably connected, which is convenient for maintenance and replacement and improves practicality. The laser detection component 4 is composed of a laser sensor, a data calculation module and an information transmission module. The laser sensor is used to emit laser and receive reflected laser. The data calculation module is used to calculate the time difference or phase difference between laser emission and reception to determine the distance. The information transmission module transmits the real-time measured information to the receiving terminal, which is convenient for the staff to observe and process the information in a centralized manner. Several tension ropes 3 are spirally wound around the outside of the bridge column to increase the contact area and friction between the device and the bridge pier. At the same time, after the tightness of the clamp ring 1 decreases, the tension rope 3 will elastically absorb the vibration force generated by the vehicle when it is running, thereby improving the stability of the device and preventing the vibration force of the vehicle from affecting the detection accuracy of the device.

[0024] like Figure 1-Figure 3 As shown, the driving assembly includes: a first gear 5, the first gear 5 is rotatably connected to one side of the clamp ring 1, the first gear 5 is meshed with the rotating gear ring 2, the first gear 5 is rotatably connected to the second gear 6, a first elastic element 7 is arranged between the first gear 5 and the second gear 6, and the first elastic element 7 is used to apply continuous torque to the first gear 5; a force storage limit assembly, the force storage limit assembly is arranged on one side of the clamp ring 1, and the force storage limit assembly is used to limit the second gear 6 in one direction.

[0025] 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 the two is a torsion spring or a spring, which is 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 torsion state after installation. The torque of the first elastic element 7 always acts on the first gear 5 after being installed on the bridge column, and finally acts on the rotating gear ring 2, so that several tension ropes 3 can still be close to the bridge column after wear and tear, and elastically absorb vibration. The first gear 5 and the rotating gear ring 2 are both electroplated with chrome coating on the outside, which can enhance the hardness, wear resistance and corrosion resistance of the two, so as to avoid friction damage and stress concentration caused by the force between the two and reduce the service life. The torque is accumulated by the first elastic element 7, and the torque is always applied to several tension ropes 3 through the first gear 5 and the rotating gear ring 2, so that the tension ropes 3 can fit with the bridge column again under the action of the torque of the first elastic element 7 after wear and tear, thereby consolidating the fitting strength of the tension ropes 3 to the bridge column.

[0026] like Figure 3 and Figure 4 As shown, the force storage limit 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, the output end of the reducer 202 is fixedly connected to a third gear 204, the third gear 204 is meshed with the second gear 6, and the reducer 202 is used to limit the rotation direction of the second gear 6; a rotating fan blade 203, rotatably connected to the fixed frame 201, the input end of the reducer 202 is splined with a docking shaft 205, the rotating fan blade 203 is used to obtain external wind force and drive the docking shaft 205 to rotate; a docking assembly, arranged on the docking shaft 205, the docking assembly is used to dock the rotating fan blade 203 with the docking shaft 205.

[0027] In the above scheme, a one-way locking mechanism is arranged inside the reducer 202, so that the reducer 202 can only rotate in one direction, thereby causing the third gear 204 to limit the first gear 5 in one direction, thereby preventing the first elastic element 7 with accumulated torque from resetting in reverse, and making it impossible to apply a torsional force to several tension ropes 3. At the same time, the rotating fan blades 203 obtain external wind force to restore the torque of the first elastic element 7 that has released part of the torque.

[0028] like Figure 3 and Figure 4 As shown, the docking assembly includes: a first docking block 206, fixedly connected to the top end of the docking shaft 205; a second docking block 207, arranged 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 limitedly matched; a detection assembly, arranged on the fixed frame 201, the detection assembly is used to detect the degree of torque accumulated in the first elastic element 7 and drive the docking shaft 205 to dock with the rotating fan blade 203.

[0029] In the above scheme, after a part of the torque of the first elastic element 7 is released, the first docking block 206 is docked with the second docking block 207, so that the external wind force drives the rotating fan blade 203 to rotate, and the docking shaft 205 is driven to rotate through the limited docking between the first docking block 206 and the second docking block 207, and 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.

[0030] like Figure 3 and Figure 4 As shown, the detection component includes: a first elastic push rod 301, which is fixedly connected to the fixing frame 201, the telescopic end of the first elastic push rod 301 is in contact with the outside of the first elastic element 7, and the first elastic push rod 301 is used to detect the degree of torsion of the first elastic element 7; a second elastic push rod 302, which is fixedly connected to the fixing frame 201, 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, and is used to expand the movement stroke of the second elastic push rod 302; the telescopic end of the second elastic push rod 302 is rotatably connected to the docking shaft 205, and the second elastic push rod 302 is used to push the docking shaft 205 to dock with the rotating fan blade 203, and 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.

[0031] In the above scheme, the telescopic end of the first elastic push rod 301 is fixedly connected with an arc plate, and the height and curvature setting are matched with the height and curvature of the torsion spring or spring selected for the first elastic element 7 to improve the sensitivity of detecting 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 filled with hydraulic oil, and because the cross-section of the fixed part of the first elastic push rod 301 is larger than the cross-section 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 to improve the sensitivity of the device, and by detecting the torsion state of the first elastic element 7, the rotating fan blade 203 is docked with 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, and the force of the external wind flow is offset by rotation, so as to avoid the rotating fan blade 203 being unable to rotate, and the internal stress concentration under the action of the wind flow, thereby reducing its own service life.

[0032] When it is necessary to detect the displacement of the bridge column, the laser detection component 4 needs to be installed at a specific position of the bridge section. At this time, the staff will splice the hoop ring 1 to the required position of the bridge column, and rotate the gear ring 2 to splice it as a whole. The staff rotates the bolt to splice and fix the hoop ring 1 to the required position on the bridge column, and then the staff rotates the first gear 5. The rotation of the first gear 5 drives the second gear 6 to rotate synchronously through the first elastic element 7. The rotation of the second gear 6 drives the several tension ropes 3 thereon to rotate synchronously, so that the several tension ropes 3 are spirally wound around the outside of the bridge column, increasing the contact area and friction between the device and the bridge pier. Force, and at the same time absorb the vibration force through its own elasticity, so as to improve the stability of the device and avoid the vibration force generated when the vehicle is running affecting the detection accuracy of the laser detection component 4, until the rotating gear ring 2 can no longer rotate, and then the staff continues to rotate the first gear 5. At this time, the rotation of the first gear 5 drives the first elastic element 7 to twist, so that the first elastic element 7 starts to accumulate force, and this is done until the first elastic element 7 accumulates force to the required state, and then the rotation of the first gear 5 is stopped. At this time, the laser detection component 4 is fixed, and then the laser detection component 4 is turned on. The laser detection component 4 emits infrared to detect the distance between itself and the bridge pier.

[0033] After the device is used for a long time, the tension rope 3 is very likely to be worn due to the friction between the vibration force generated by the running of vehicles on the bridge and the bridge pier, resulting in a reduction in the contact area between the tension rope 3 and the bridge pier. When there is an extremely strong wind flow outside, the lateral force generated by the wind on the device is very likely to cause a small gap between the tension rope 3 and the bridge column, reducing the tightening force of the device. At this time, the first elastic element 7 begins to release the elastic force, the first elastic element 7 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 fit with the outside of the bridge column again, so that the tension rope 3 restores the contact area with the bridge pier, and the tightening force of the device and the bridge pier is restored.

[0034] After the first elastic element 7 drives the first gear 5 to rotate so that the tension rope 3 fits with the bridge column, the elastic force accumulated in 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, and 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, and the telescopic end of the second elastic push rod 302 drives the docking shaft 205 to move upward synchronously, so that the docking shaft 205 drives the first docking block 206 thereon to move upward synchronously, and the docking shaft 205 drives the first docking block 206 to enter the rotating fan blade 203. When wind blows outside The wind force drives the rotating blades 203 to rotate, and the rotation of the rotating blades 203 drives the second docking block 207 inside it to rotate and contact the first docking block 206. At this time, the rotating blades 203 drive 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 a low torque, and the output end of the reducer 202 drives the third gear 204 to rotate, and the third gear 204 drives the second gear 6 to rotate, so that the second gear 6 rotates to accumulate 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 the plurality of tension ropes 3, so that the fitting force of the tension ropes 3 to the bridge column is restored to the initial state.

[0035] When the torque of the first elastic element 7 is gradually reset, the radius of the first elastic element 7 is gradually reduced, and the telescopic end of the first elastic push rod 301 is gradually reset. 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, and the telescopic end of the second elastic push rod 302 drives the docking shaft 205 to move downward, so that the docking shaft 205 drives the first docking block 206 and the second docking block 207 thereon to separate. When the tension rope 3 is separated from the bridge column again due to the influence of external wind force, the above steps are repeated.

[0036] In this embodiment, the connection between the rotating fan blade 203 and the second docking block 207 is a fixed connection, but it is limited to embodiment one. In other subsequent embodiments, the connection between the rotating fan blade 203 and the second docking block 207 is a rotational connection. Please refer to the specific description in the subsequent embodiments.

[0037] Embodiment 2: Based on embodiment 1, Figure 4-Figure 6As shown, it also includes: a rotating ring 401, which is rotatably connected to the inside of the rotating fan blade 203, and the rotating ring 401 is fixedly connected to the second docking block 207; a second elastic element 402, which is arranged between the rotating ring 401 and the rotating fan blade 203; a friction component, which is arranged inside the rotating fan blade 203, and the friction component is used to absorb the impact force of the first docking block 206 and the second docking block 207. The rotating fan blade 203 is circumferentially slidably connected with at least one centrifugal component 405, and the centrifugal component 405 is used to detect the rotation speed of the rotating fan blade 203.

[0038] like Figure 4-Figure 6 As shown, the friction assembly includes: a friction sleeve 403, which is splined to the swivel 401; a friction plate 404, which is fixedly connected to the inside of the rotating fan blade 203, and the friction sleeve 403 and the friction plate 404 are fitted together; at least one elastic pull rope 406 is fixedly connected between the adjacent centrifugal part 405 and the friction sleeve 403, and the elastic force of the elastic pull rope 406 is greater than the gravity of the friction sleeve 403, and is used for the centrifugal part 405 to first pull the friction sleeve 403 and the friction plate 404 to fit together.

[0039] In the above scheme, the second elastic element 402 is a torsion spring, and 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 member 405 detects the rotation speed of the rotating fan blade 203 through centrifugal force. The weight and number of the centrifugal members 405 can be changed accordingly according to actual conditions. The friction sleeve 403 and the friction disk 404 both convert the impact kinetic energy of the first docking block 206 and the second docking block 207 into friction heat energy through friction rotation. For example, the friction sleeve 403 and the friction disk 404 The fitting surfaces of the disk 404 are all provided with frosted rough surfaces. In other embodiments, the materials of the friction sleeve 403 and the friction disk 404 themselves can also be set to rough materials to avoid the loss of the rough surface. The flow rate of the external wind flow is detected by the centrifugal part 405, and the sliding friction between the friction sleeve 403 and the friction disk 404 is autonomously adjusted according to the wind speed, so that the sliding friction between the friction sleeve 403 and the friction disk 404 converts the impact kinetic energy of the first docking block 206 and the second docking block 207 into heat energy, thereby reducing the impact damage between the first docking block 206 and the second docking block 207 and extending the service life.

[0040] When the external wind force drives the rotating blade 203 to rotate, the rotating blade 203 rotates and drives the centrifugal member 405 thereon to rotate synchronously. The centrifugal member 405 slides toward the outside of the rotating blade 203 under the action of the centrifugal force. At this time, the centrifugal member 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 fits with the friction disk 404. At this time, the friction sleeve 403 cannot continue to move upward. The centrifugal member 405 pulls the elastic pull rope 406 under the action of the centrifugal force to stretch. The greater the stretching degree of the elastic pull rope 406, the greater the fit between the friction sleeve 403 and the friction disk 404, and the greater the friction between the two. When the docking shaft 205 drives the first docking block 206 to enter the interior of the rotating blade 203, the rotating blade 203 drives the second docking block 207 inside it to contact and collide with the first docking block 206. At this time, the second docking block 207 is 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 collision 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 fits the friction disk 404 for friction sliding, and so on until the second elastic element 402 is compressed to the limit state. By detecting the flow rate of the external wind flow, the sliding friction between the friction sleeve 403 and the friction disk 404 is automatically adjusted. The collision 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, so as to avoid the first docking block 206 and the second docking block 207 being broken due to the impact force after long-term use, resulting in the rotating fan blade 203 and the docking shaft 205 being unable to dock in time, thereby causing the first elastic element 7 to be unable to store force.

[0041] When the first elastic element 7 accumulates force to the initial state, the telescopic end of the first elastic push rod 301 drives the first docking block 206 to separate from the second docking block 207 through the docking shaft 205, and so on until the external wind flow ends. At this time, the rotating fan blade 203 stops rotating, the elastic pull rope 406 is reset to the initial state, and the friction sleeve 403 is separated from the friction disk 404. At this time, the second elastic element 402 is reset and drives the rotating ring 401 to reset and rotate, so that the second docking block 207 is reset to the initial state. When the first elastic element 7 releases part of the torque again, the above steps are repeated.

[0042] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A displacement measuring device based on laser measurement technology, characterized in that: have: Clamp ring (1); A rotating gear ring (2) is rotatably connected to the hoop ring (1), wherein the central axis of the rotating gear ring (2) coincides with the central axis of the hoop ring (1), so as to increase the stability of the hoop ring (1); A plurality of tension ropes (3), wherein the plurality of tension ropes (3) are detachably connected between the rotating gear ring (2) and the clamp ring (1), and the tension ropes (3) are used to increase the tightening force of the clamp ring (1); A laser detection component (4) is installed on one side of the clamp ring (1), and the laser detection component (4) is used to detect the displacement between the clamp ring (1) and the bridge pier; A drive assembly is arranged on one side of the clamp ring (1), and the drive assembly is used to continuously apply a rotational force to the rotating gear ring (2).

2. A displacement measuring device based on laser measurement technology according to claim 1, characterized in that: The drive assembly comprises: a first gear (5), the first gear (5) being rotatably connected to one side of the hoop ring (1), the first gear (5) being meshed with the rotating gear ring (2), the first gear (5) being rotatably connected to a second gear (6), a first elastic element (7) being provided between the first gear (5) and the second gear (6), the first elastic element (7) being used to apply a continuous torque to the first gear (5); A force storage limit assembly, wherein the force storage limit assembly is arranged on one side of the clamp ring (1), and the force storage limit assembly is used to perform unidirectional limit on the second gear (6).

3. A displacement measuring device based on laser measurement technology according to claim 2, characterized in that: The force storage and limiting component comprises: A fixing frame (201) fixedly connected to one side of the clamp ring (1); A reducer (202) is fixedly connected to the fixed frame (201); an output end of the reducer (202) is fixedly connected to a third gear (204); the third gear (204) is meshed with the second gear (6); and the reducer (202) is used to limit the rotation direction of the second gear (6); The rotating blade (203) is rotatably connected to the fixing frame (201); the input end of the reducer (202) is spline-connected to a docking shaft (205); the rotating blade (203) is used to obtain external wind force and drive the docking shaft (205) to rotate; A docking assembly is arranged on the docking shaft (205), and is used to dock the rotating fan blade (203) with the docking shaft (205).

4. A displacement measuring device based on laser measurement technology according to claim 3, characterized in that: The docking assembly comprises: A first docking block (206) fixedly connected to the top end of the docking shaft (205); A second docking block (207) is arranged 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 limitedly matched; A detection component is arranged on the fixing frame (201), and is used to detect the degree of torque accumulated by the first elastic element (7) and drive the docking shaft (205) to dock with the rotating fan blade (203).

5. A displacement measuring device based on laser measurement technology according to claim 4, characterized in that: The detection component comprises: A first elastic push rod (301) is fixedly connected to the fixing 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) 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 fixing 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 fixing portion of the first elastic push rod (301) and the fixing portion of the second elastic push rod (302) are fixedly connected and are connected by a connecting pipe (303).

6. A displacement measuring device based on laser measurement technology according to claim 5, characterized in that: 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), and the cross-sectional area of ​​the fixed portion of the first elastic push rod (301) is greater than the cross-sectional area of ​​the fixed portion of the second elastic push rod (302), so as to expand the movement stroke of the second elastic push rod (302).

7. A displacement measuring device based on laser measurement technology according to claim 5, characterized in that: include: A rotating ring (401) is rotatably connected to the inside of the rotating fan blade (203), and the rotating ring (401) is fixedly connected to the second docking block (207); A second elastic element (402) is arranged between the rotating ring (401) and the rotating blade (203); A friction component is arranged inside the rotating fan blade (203), and is used to absorb the impact force of the first docking block (206) and the second docking block (207).

8. A displacement measuring device based on laser measurement technology according to claim 7, characterized in that: The rotating blade (203) is circumferentially slidably connected to at least one centrifugal component (405), and the centrifugal component (405) is used to detect the rotation speed of the rotating blade (203).

9. A displacement measuring device based on laser measurement technology according to claim 8, characterized in that: The friction assembly comprises: A friction sleeve (403) is spline-connected to the rotating ring (401); A friction disk (404) is fixedly connected to the interior of the rotating blade (203), and the friction sleeve (403) is in close contact with the friction disk (404); At least one elastic drawstring (406) is fixedly connected between the adjacent centrifugal member (405) and the friction sleeve (403).

10. A displacement measuring device based on laser measurement technology according to claim 9, characterized in that: The elastic force of the elastic pull rope (406) is greater than the gravity of the friction sleeve (403), and is used by the centrifugal member (405) to first pull the friction sleeve (403) to fit with the friction disc (404).

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