Multi-direction auxiliary distance measuring support of stay wire displacement sensor
By designing a multi -directional auxiliary ranging bracket, using the multi -freedom rotation of the sensor and the movement of the rail car, the existing pull -line displacement sensor has reduced accuracy when the vibration is reduced during long distance measurement, and higher accuracy and flexibility have been achieved. Multi -directional measurement.
Patent Information
- Application Number
- CN202421316720.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-01-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing wire displacement sensors are mainly used for single-direction measurements, and during long-distance measurements, vibrations are caused by excessive cables, which affects the measurement accuracy.
A multi -directional auxiliary ranging bracket is designed with a stroke -line displacement sensor. By performing multi -free rotation on the center of gravity of the sensor itself, combining the movement of the rail car, shortening the length of the cable to pull out the length, reduce the vibration, and achieve multi -directional measurement.
The measurement accuracy is improved and the error is reduced, especially in an environment where mechanical vibration is existed, the cable life is prolonged and the maintenance cost of the sensor is reduced.
Smart Images
Figure CN222419001U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of a wire distance measuring sensor, in particular to a multi-directional auxiliary distance measuring bracket of a wire displacement sensor. Background Art
[0002] A pull-wire displacement sensor is also called a pull-wire displacement sensor, or simply a pull-wire sensor or a pull-wire sensor. There is a measuring wire inside the sensor that is led out through the opening of the sensor housing. The connecting end of the measuring wire is fixed on the object to be measured. When the object to be measured is displaced, the measuring wire is pulled out. At the same time, the length of the pulled measuring wire is converted into an electrical signal by the sensor, thereby feeding back the displacement information of the object to be measured. Since the measuring wire is flexible, the pull-wire sensor can flexibly measure the displacement of objects under various movements.
[0003] Existing draw-wire displacement sensors usually come with a dedicated mounting bracket, which is designed to ensure that the sensor can be firmly and accurately fixed at the mounting position. However, existing draw-wire displacement sensors are usually used to measure displacement in a single direction rather than for multi-directional ranging. The measuring distance of the draw-wire displacement sensor ranges from a few meters to tens of meters. When measuring over long distances, the cable is too long and will cause a large vibration of the cable, thereby affecting the normal movement of the cable and the measurement accuracy.
[0004] Therefore, it is necessary to provide a new multi-directional auxiliary ranging bracket for a wire displacement sensor to solve the above technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a multi-directional auxiliary ranging bracket for a wire-drawing displacement sensor, which can rotate with multiple degrees of freedom on the center of gravity of the wire-drawing displacement sensor itself. When the cable is deviated in direction within a certain range, the cable outlet of the wire-drawing displacement sensor can also rotate following the direction of the wire drawing to complete multi-directional ranging. A rail trolley connected to the wire end of the wire drawing sensor is designed. By controlling the movement of the rail trolley, the pull-out length of the cable can be shortened and the vibration amplitude of the cable can be reduced. The wire-drawing displacement sensor is cleverly combined with the mounting bracket, which helps to improve measurement accuracy and reduce errors, especially when there is mechanical vibration in the environment.
[0006] The utility model provides a multi-directional auxiliary ranging bracket for a wire displacement sensor, comprising a mounting bracket and a support column mounted at the bottom of a grid, the mounting bracket also being provided with a wire displacement sensor, the grid being located at the top of the support column, a guide rail being fixedly mounted on the inner side of the support column, a traction trolley being provided in the guide rail and being movable along its axial direction, a fixing ring for connecting the wire end of the wire displacement sensor being fixedly mounted on the traction trolley.
[0007] Furthermore, the mounting bracket includes a fixed plate, a frame and a rotating frame, the fixed plate is fixedly connected to the bottom of the grid, the frame and the fixed plate are rotatably connected via a bearing, and the rotating frame is rotatably mounted on the inner wall of the frame via a bearing.
[0008] Furthermore, the rotating frame includes a mounting plate 1, a mounting plate 2, a rotating plate 1 and a rotating plate 2, and the mounting plate 1 and the mounting plate 2 are slidably mounted on the inner side walls of the rotating plate 1 and the rotating plate 2 respectively.
[0009] Furthermore, the traction trolley includes a body, a gear 1 and a rack, the rack is fixedly installed inside the guide rail, the body is slidably installed inside the guide rail, and the body is provided with a driving mechanism for driving the gear 1 to rotate, the gear 1 is rotatably installed inside the body, and the gear 1 is meshed with the rack.
[0010] Furthermore, the driving mechanism includes a stepper motor and gear 2, the stepper motor is fixedly mounted on the vehicle body, the rotor end of the stepper motor is fixedly connected to the gear 2, and the gear 2 is meshed with the gear 1.
[0011] Furthermore, a spring sheet is provided at the bottom of the vehicle body, and one end of the spring sheet is located in the tooth groove of the rack.
[0012] Compared with the related art, the multi-directional auxiliary ranging bracket of the wire displacement sensor provided by the utility model has the following beneficial effects:
[0013] The utility model has a traction trolley in the guide rail which can move along the axial direction thereof, a wire displacement sensor is arranged on the mounting bracket, a fixing ring for connecting the wire end of the wire displacement sensor is fixedly mounted on the traction trolley, and the coordinated use of the mounting bracket and the traction trolley can help the sensor adapt to the measurement requirements in different directions, thus providing a more flexible solution for multi-directional measurement. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of the multi-directional auxiliary distance measuring bracket of the wire displacement sensor provided by the utility model;
[0015] Figure 2 A schematic diagram of the structure of the mounting bracket and the guide rail provided by the utility model;
[0016] Figure 3 A schematic diagram of the structure of the mounting bracket provided by the utility model;
[0017] Figure 4 A schematic diagram of the combined structure of the traction trolley and the guide rail provided by the utility model;
[0018] Figure 5 The structure diagram of the traction trolley provided by the utility model Figure 1 ;
[0019] Figure 6 The structure diagram of the traction trolley provided by the utility model Figure 2 .
[0020] Numbers in the figure: 1. Grid; 2. Inertial sensor; 3. Support column; 4. Wire displacement sensor; 5. Guide rail; 6. Fixed ring; 7. Fixed plate; 8. Frame; 9. Mounting plate 1; 10. Mounting plate 2; 11. Rotating plate 1; 12. Rotating plate 2; 13. Car body; 14. Gear 1; 15. Rack; 16. Stepper motor; 17. Gear 2; 18. Spring sheet. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 ,in, Figure 1 This is a schematic diagram of the overall structure of the multi-directional auxiliary distance measuring bracket of the wire displacement sensor provided by the utility model; Figure 2 A schematic diagram of the structure of the mounting bracket and the guide rail provided by the utility model; Figure 3 A schematic diagram of the structure of the mounting bracket provided by the utility model; Figure 4 A schematic diagram of the combined structure of the traction trolley and the guide rail provided by the utility model; Figure 5 The structure diagram of the traction trolley provided by the utility model Figure 1 ; Figure 6 The structure diagram of the traction trolley provided by the utility model Figure 2 .
[0023] When in use, four cranes are used to lift a large grid to the top of the support column for easy installation. In order to solve the problem that the crane cannot measure the height of the hoisted object, the following method is adopted:
[0024] In the specific implementation process, Figure 1-Figure 6 As shown, the multi-directional auxiliary ranging bracket of the wire displacement sensor provided by the utility model comprises a mounting bracket and a support column 3 installed at the bottom of the grid 1, and a wire displacement sensor 4 is also arranged on the mounting bracket. The grid 1 is located at the top of the support column 3, and a guide rail 5 is fixedly installed on the inner side of the support column 3. A traction trolley that can move along its axial direction is arranged in the guide rail 5, and a fixing ring 6 for connecting the wire end of the wire displacement sensor 4 is fixedly installed on the traction trolley;
[0025] An inertial sensor 2 is also provided on the top of the grid 1 to detect whether the grid 1 is kept level and the displacement of the grid 1 when it is lifted. A plurality of mounting feet are provided on the side of the guide rail 5 and are fixed to the support column 3 by bolts.
[0026] The inertial sensor 2 may be of the TMM55E-PMH010 model, and the wire displacement sensor 4 may be of the WEP-50-750-RF model;
[0027] The mounting bracket includes a fixed plate 7, a frame 8 and a rotating frame. The fixed plate 7 is fixedly connected to the bottom of the grid 1. The frame 8 and the fixed plate 7 are rotatably connected via a bearing. The rotating frame is rotatably mounted on the inner side wall of the frame 8 via a bearing. The rotating frame includes a mounting plate 1 9, a mounting plate 2 10, a rotating plate 1 11 and a rotating plate 2 12. The mounting plate 1 9 and the mounting plate 2 10 are slidably mounted on the inner side walls of the rotating plate 1 11 and the rotating plate 2 12 respectively.
[0028] It should be noted that the mounting plate 9 and the rotating plate 11 slide together through mortise and tenon joints, and a plurality of screw holes are provided on the rotating plate 11, and the mounting plate 9 is fixed by screwing screws into the screw holes. The mounting plate 10 and the rotating plate 12 are installed in the same manner as above and can be slidably adjusted. The purpose is to adjust the center of gravity position of the wire sensor so that the outlet direction of the wire sensor can follow the direction of the wire more smoothly, thereby reducing the wear of the wire.
[0029] The traction trolley includes a vehicle body 13, a gear 14 and a rack 15, the rack 15 is fixedly installed inside the guide rail 5, the vehicle body 13 is slidably installed inside the guide rail 5, and a driving mechanism for driving the gear 14 to rotate is provided on the vehicle body 13, the gear 14 is rotatably installed inside the vehicle body 13, the gear 14 is meshed with the rack 15, and the driving mechanism includes a stepper motor 16 and a gear 2 17, the stepper motor 16 is fixedly installed on the vehicle body 13, and the rotor end of the stepper motor 16 is in contact with the gear 2 17. Fixed connection, gear 2 17 meshes with gear 1 14, gear 2 17 and gear 1 14 are different in size to form a speed reduction difference, which is used to relieve the load of the stepper motor 16, and the stepper motor 16 is started to drive gear 2 17 to rotate, and the gear 2 17 and gear 1 14 are transmitted and meshed with the rack 15 to provide power for the vehicle body 13, and the vehicle body 13 can move up and down with the help of the rack 15. Four wheels are arranged on the edge of the vehicle body 13, and the wheels only serve as a support effect, without power, and can be freely rotated at multiple angles;
[0030] It should be noted that a spring sheet 18 is also provided at the bottom of the vehicle body 13, one end of the spring sheet 18 is located in the tooth groove of the rack 15, and the spring sheet 18 can be fixed to the bottom of the vehicle body 13 by bolts. The spring sheet 18 is used to prevent the vehicle body 13 from moving due to its own weight or the action of the pull wire, so as to prevent the trolley from being displaced due to its own gravity or the pulling of the cable. When the stepper motor 16 gives power to the vehicle body 13, the force of the spring sheet 18 cannot hinder the vehicle body 13 from moving forward.
[0031] The working principle provided by the utility model is as follows: a pull-wire displacement sensor 4 is arranged on the mounting bracket, and the pulled-wire is fixed on the traction trolley. At this time, the distance from a point on the grid 1 to the traction trolley can be obtained. By using three pull-wire sensors and the traction trolleys on three tracks, three distances can be obtained, namely the lengths of the pull wires of the three pull-wire displacement sensors 4. By three-side positioning, an unknown point in space can be determined by using three non-collinear points and three-side lengths. In the process of finding the unknown point, incorrect spatial points may appear. This false solution exists in mathematics. In order to eliminate the false solution, additional measurement data can be used. In the utility model, the inertial sensor 2 is used to obtain the displacement and find the real unknown point in space. The three pull-wire displacement sensors 4 on the grid 1 are arranged relatively dispersedly. At this time, the grid 1 must be kept horizontal to regard the three pull-wire sensors as the same point. The data obtained by the inertial sensor 2 is used to keep the grid 1 horizontal. At this time, the height of a point in the grid 1 is measured by three-side positioning, and this height is the overall height of the grid 1.
[0032] By controlling the position of the traction trolley, shortening the cable pull-out length and reducing the vibration amplitude, the cable movement will be more stable, the measurement data will be more accurate, the sensor can respond to the displacement changes of the pull wire faster and more accurately, improving the dynamic performance of the system, and reducing the exposure and frequent bending of the cable, which helps to extend the cable life and reduce the maintenance cost of the sensor.
[0033] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.
[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A multi-directional auxiliary ranging bracket for a wire displacement sensor, characterized in that: The invention comprises a mounting bracket and a support column (3) mounted at the bottom of a grid frame (1); a wire displacement sensor (4) is also provided on the mounting bracket; the grid frame (1) is located at the top of the support column (3); a guide rail (5) is fixedly mounted on the inner side of the support column (3); a traction trolley which can move along its axial direction is provided in the guide rail (5); a fixing ring (6) for connecting the wire end of the wire displacement sensor (4) is fixedly mounted on the traction trolley.
2. The multi-directional auxiliary ranging bracket of the wire displacement sensor according to claim 1, characterized in that: The mounting bracket comprises a fixed plate (7), a frame (8) and a rotating frame, wherein the fixed plate (7) is fixedly connected to the bottom of the grid frame (1), the frame (8) and the fixed plate (7) are rotatably connected via a bearing, and the rotating frame is rotatably mounted on the inner side wall of the frame (8) via the bearing.
3. The multi-directional auxiliary distance measuring bracket of the wire displacement sensor according to claim 2, characterized in that: The rotating frame comprises a mounting plate 1 (9), a mounting plate 2 (10), a rotating plate 1 (11) and a rotating plate 2 (12); the mounting plate 1 (9) and the mounting plate 2 (10) are respectively slidably mounted on the inner side walls of the rotating plate 1 (11) and the rotating plate 2 (12).
4. The multi-directional auxiliary distance measuring bracket of the wire displacement sensor according to claim 3 is characterized in that: The traction trolley comprises a vehicle body (13), a gear one (14) and a rack (15); the rack (15) is fixedly mounted inside the guide rail (5); the vehicle body (13) is slidably mounted inside the guide rail (5); a driving mechanism for driving the gear one (14) to rotate is provided on the vehicle body (13); the gear one (14) is rotatably mounted inside the vehicle body (13); and the gear one (14) is meshed with the rack (15).
5. The multi-directional auxiliary distance measurement bracket of the wire displacement sensor according to claim 4, characterized in that: The driving mechanism comprises a stepper motor (16) and a second gear (17); the stepper motor (16) is fixedly mounted on the vehicle body (13); a rotor end of the stepper motor (16) is fixedly connected to the second gear (17); and the second gear (17) is meshed with the first gear (14).
6. The multi-directional auxiliary distance measuring bracket of the wire displacement sensor according to claim 5, characterized in that: A spring sheet (18) is also provided at the bottom of the vehicle body (13), and one end of the spring sheet (18) is located in the tooth groove of the rack (15).