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CN-122015712-A - Shaft coupling coaxiality measuring and adjusting method and measuring device

CN122015712ACN 122015712 ACN122015712 ACN 122015712ACN-122015712-A

Abstract

The application discloses a method and a device for measuring and adjusting coaxiality of a coupler, and relates to the technical field of coaxiality measurement and adjustment. The method comprises the steps S1-S5 that a laser ranging sensor rotates and monitors distance data to obtain the maximum distance Minimum distance And corresponding angle thereof 、 And based on radius of rotation Calculating the included angle between the end surfaces of the two half couplings And S6-S9, moving the laser ranging sensor radially outwards to lock the rotation radius when the laser passes over the outer edge of the second half coupler to trigger distance jump Recording the angle of the two jumps And Calculating the distance between the axes of the two coupling halves And carrying out translation adjustment on the second half coupler until the axes of the two half couplers are completely coaxial, thereby completing high-precision measurement and adjustment of the coaxiality of the couplers.

Inventors

  • XU XIN
  • LIU TIANXIONG
  • LI SHUAIFANG
  • YAN ZHENWU
  • DU LEI
  • HAN LIN

Assignees

  • 三峡金沙江川云水电开发有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. The method for measuring and adjusting the coaxiality of the coupler is characterized by comprising the following steps of: S1, installing a measuring device (1) with a laser ranging sensor (17) and an angle sensor (14) on a first half coupler (2), enabling a laser optical axis of the laser ranging sensor (17) to be parallel to and rotatable around an axis of the first half coupler (2), and recording an end face radius of the first half coupler (2) Radius of end face of second coupling part (3) ; S2, adjusting the radial position of the laser ranging sensor (17) on the end face of the first half coupler (2) to enable laser to irradiate the end face of the second half coupler (3) in the whole course during rotation, and recording the rotation radius of the laser ranging sensor (17) at the moment ; S3, controlling the laser ranging sensor (17) to rotate, monitoring the rotating angle data of the laser ranging sensor (17) by using the angle sensor (14), monitoring the distance data by using the laser ranging sensor (17), and obtaining the maximum distance At an angle corresponding to it And a minimum distance At an angle corresponding to it ; S4, calculating the included angle between the end surfaces of the first half coupler (2) and the second half coupler (3) according to the data acquired in the steps S2 and S3 And adjusting the position of the second coupling half (3) accordingly; s5, repeating the steps S3-S4 until the included angle between the end surfaces of the first half coupler (2) and the second half coupler (3) Within the allowable range; S6, moving the laser ranging sensor (17) outwards along the radial direction of the end face of the first half coupler (2), monitoring distance data and angle data in real time, locking the radial position of the laser ranging sensor (17) along the end face of the first half coupler (2) when jump of the distance data larger than a threshold value occurs, and recording the rotation radius of the laser ranging sensor (17) at the moment Angle at this time ; S7, controlling the laser ranging sensor (17) to rotate, continuously monitoring distance data and angle data, and recording the angle when the distance data jumps more than a threshold value again ; S8, calculating the distance between the axes of the first half coupler (2) and the second half coupler (3) according to the data acquired in the step S1 and the step S6 And adjusting the position of the second coupling half (3) accordingly; s9, repeating the steps S6-S8 until the distance between the axes of the first half coupler (2) and the second half coupler (3) Within the allowable range.
  2. 2. The method for measuring and adjusting coaxiality of a coupling according to claim 1, wherein in step S4, the angle is set to Angle and angle of The angular bisector direction of (2) is a tilt reference and the position of the second coupling half (3) is adjusted in a plane perpendicular to the angular bisector.
  3. 3. The method for measuring and adjusting coaxiality of a coupling according to claim 1 or 2, wherein in step S8, the angle is Angle and angle of The angular bisector of (2) is the offset direction, and the second coupling half (3) is translated to adjust its position.
  4. 4. The method for measuring and adjusting the coaxiality of a coupling according to claim 1, wherein in step S3, the laser ranging sensor (17) rotates at least one revolution.
  5. 5. The method for measuring and adjusting coaxiality of a coupling according to claim 1 or 4, wherein in step S4, the included angle is Calculated according to the following formula: 。
  6. 6. The method for measuring and adjusting coaxiality of a coupling according to claim 1, wherein in step S8, in the computer graphics software, O is used as a center of a circle, Draw a circle for a radius and angle And (3) with Converted into two points B, C on the circle, and drawn with radius of And simultaneously pass through two circles of B, C points, the center of the circle is marked as A, the length of OA is the distance between the axes of the first half coupling (2) and the second half coupling (3) 。
  7. 7. The method for measuring and adjusting coaxiality of a coupling according to claim 1, wherein in step S8, the distance is It can also be calculated according to the following formula: Wherein, the method comprises the steps of, 。
  8. 8. The method for measuring and adjusting the coaxiality of a coupling according to claim 1, wherein the data obtained in the steps S1, S2, S3, S6 and S7 are read by a computer, and the included angle between the end surfaces of the first half coupling (2) and the second half coupling (3) is automatically calculated And the distance between the axes of the first coupling half (2) and the second coupling half (3) 。
  9. 9. The utility model provides a shaft coupling axiality measuring device, its characterized in that, including being equipped with from inner tube (11) of centering fixture (12), inner tube (11) are equipped with urceolus (13) through the coaxial cover of bearing (18) outward, inner tube (11) with be equipped with the monitoring between urceolus (13) urceolus rotation angle's angle sensor (14), be connected with on the outer wall of urceolus (13) rather than axis parallel connecting rod (15), connecting rod (15) can follow its axial displacement and locking, one end of connecting rod (15) is connected with along the regulation pole (16) of urceolus (13) radial extension, regulation pole (16) can follow its axial displacement and locking, be equipped with laser range sensor (17) on regulation pole (16), the laser optical axis of laser range sensor (17) with the axis of urceolus (13) is parallel, and along keeping away from the direction transmission of urceolus (13).
  10. 10. The coupling coaxiality measurement device according to claim 9, wherein a motor driving assembly is arranged between the inner cylinder (11) and the outer cylinder (13), and the motor driving assembly is used for driving the outer cylinder (13) to rotate.

Description

Shaft coupling coaxiality measuring and adjusting method and measuring device Technical Field The application relates to the technical field of coaxiality measurement and adjustment, in particular to a method and a device for measuring coaxiality of a coupler. Background In the running process of the hydropower station, a coupling is generally adopted between the water pump and the driving motor. When the coupling transmits motion and torque, the coaxiality control of the driven end half coupling and the driving end half coupling must be ensured to be within an allowable range. If the coaxiality of the two half couplings exceeds the allowable range, additional bending moment of the shafting, eccentric wear of the bearings and early failure of mechanical seal are induced, so that the pump body vibration exceeds standard, the machine set is stopped in an unplanned mode, and even the risk of flooding the factory building exists. Therefore, the high-precision measurement and adjustment of the coaxiality of the coupler are key procedures which are required to be repeatedly carried out in the installation, maintenance and state operation and maintenance of the water pump-motor set in the hydropower station. For a long time, the water and electricity industry commonly adopts a purely manual process of a ruler and a dial indicator for measuring the coaxiality of the coupler, and the specific measurement method comprises the steps of firstly using a steel plate ruler to abut against the outer circle of the two half couplers, visually inspecting the radial dislocation quantity, inserting and testing by using a feeler gauge, roughly estimating the coaxiality, then fixing a mechanical dial indicator on the coupler at one side, enabling the gauge head to touch the outer circle and the end face of the coupler at the other side, manually recording gauge needle readings at four directions of 0 degree, 90 degree, 180 degree and 270 degree, and calculating the radial and angular deviation value through algebraic difference. The method relies on the experience of overhaulers, the tool is light and does not need an external power supply, and the method is still used on the hydropower overhauling site more than 80% up to now. However, the measuring method has high technical capability requirement on measuring staff, complicated manual operation and easy introduction of measuring errors, and most of the steps depend on visual inspection, the dial indicator support needs to be adjusted repeatedly, and the accuracy and the reliability of the measuring result are difficult to estimate and inevitably affected by the estimation link and the instrument errors of the dial indicator. Therefore, the traditional measuring method has poor precision, and can meet the requirement of low precision in the past, but with the progress of hydraulic engineering technology, the requirements of various performance indexes of the water pump on precision and stability are increasingly improved, and the traditional measuring method is difficult to adapt to the precision requirement of hydraulic engineering. Disclosure of Invention The application aims to provide a method and a device for measuring and adjusting coaxiality of a coupler, and solves the problem of poor measurement accuracy of the traditional measurement method. The technical scheme adopted for solving the technical problems is as follows: In a first aspect, a method for measuring and adjusting coaxiality of a coupling is provided, including: s1, installing a measuring device with a laser ranging sensor and an angle sensor on a first half coupler, enabling a laser optical axis of the laser ranging sensor to be parallel to and rotatable around an axis of the first half coupler, and recording an end face radius of the first half coupler Radius of end face of second coupling; S2, adjusting the radial position of the laser ranging sensor on the end face of the first half coupler to enable laser to irradiate on the end face of the second half coupler in the whole course when the laser ranging sensor rotates, and recording the rotating radius of the laser ranging sensor at the moment; S3, controlling the rotation of the laser ranging sensor, monitoring the rotation angle data of the laser ranging sensor by using the angle sensor, monitoring the distance data by using the laser ranging sensor, and obtaining the maximum distanceAt an angle corresponding to itAnd a minimum distanceAt an angle corresponding to it; S4, calculating the included angle between the end surfaces of the first half coupler and the second half coupler according to the data acquired in the steps S2 and S3And adjusting the position of the second coupling half accordingly; S5, repeating the steps S3-S4 until the included angle between the end faces of the first half coupler and the second half coupler is formed Within the allowable range; S6, moving the laser ranging sensor outwards along the radial direction of the end face of