Rotor roundness and radius measuring device
The surface distance of the rotor magnetic pole is measured by a laser rangefinder and calculating its circularity and radius, which solves the problems of cumbersome and unstable rotor measurement operations in the prior art, and achieves efficient and accurate measurement of rotor circularity and radius.
Patent Information
- Application Number
- CN202421059152.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-15
AI Technical Summary
When measuring huge and complex rotors, existing rotor roundness measurement technologies and devices are cumbersome to operate, time-consuming and susceptible to human factors, resulting in unstable measurement results.
A laser rangefinder is used to measure the distance between the rod and the surface of the rotor magnetic pole. By calculating the roundness and absolute radius of the upper, middle and lower parts of the rotor, a base, round measuring arm, measuring rod and laser rangefinder are designed. The device uses a laser rangefinder to collect multiple distance measurement points, calculate the circularity and radius.
The rotor roundness and radius are quickly and accurately measured, reducing the operating time, improving the accuracy of the measurement results, and reducing the influence of human factors.
Smart Images
Figure CN222211599U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rotor parameter measurement, and particularly relates to a rotor roundness and radius measuring device. Background Art
[0002] As the core component of rotating machinery, the accuracy of the geometric shape of the rotor is crucial to the overall performance and operating stability of the equipment. Especially in large and medium-sized power equipment such as generators, motors, steam turbines, and water turbines, the roundness and radius parameters of the rotor directly affect key factors such as the uniformity of the air gap between the rotor and the stator, the accuracy of the magnetic field distribution, the vibration characteristics, and the balance of the bearing load. Therefore, accurate and efficient roundness and radius measurement of the rotor is an important part of equipment manufacturing, installation, commissioning, and regular maintenance.
[0003] The main shortcomings of existing rotor roundness measurement technology and equipment are: when measuring rotors with huge size and complex structure, the traditional contact measurement system requires point-by-point contact or scanning, the operation process is cumbersome, the adjustment is time-consuming, and it is easily affected by human factors, resulting in unstable measurement results. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a rotor roundness and radius measuring device, which uses a laser rangefinder to measure the distance from a measuring rod to the surface of each magnetic pole, and can calculate the roundness of the upper, middle and lower parts of a complete circle of the rotor, as well as the absolute radius of the rotor, thereby saving time and labor and having high precision in the measurement result.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A rotor roundness and radius measuring device comprises a base, which is connected to a circle measuring frame arm via a rotating shaft, the axis of the rotating shaft coincides with the axis of the rotor, the end of the circle measuring frame arm is detachably connected to a measuring rod, the measuring rod is parallel to the axis of the rotor, and the measuring rod is used to rotate around the axis of the rotor; a plurality of distance meters are arranged on the measuring rod.
[0007] Preferably, the rangefinder is a laser rangefinder, and a plurality of rangefinders are arranged linearly.
[0008] Preferably, a connecting sleeve is provided on the top of the measuring rod, and the connecting sleeve is connected to the supporting arm of the circle measuring frame through a locking bolt.
[0009] Preferably, a level gauge is provided on the top of the connecting sleeve.
[0010] Preferably, a counterweight block is provided at the end of the circle measuring frame support arm, and the counterweight block is arranged opposite to the measuring rod.
[0011] The utility model can achieve the following beneficial effects:
[0012] The utility model installs an intelligent measuring rod on the supporting arm of the circle measuring frame. After the verticality of the measuring rod is adjusted by a water bubble, it is equivalent to the effect of hanging a vertical line. The laser rangefinder is used to measure the distance from the measuring rod to the surface of each magnetic pole, and the roundness of the upper, middle and lower parts of a whole circle of the rotor can be calculated, as well as the absolute radius of the rotor, which saves time and labor and has high accuracy of the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0014] Figure 1 This is the installation diagram of the utility model (side view);
[0015] Figure 2 This is the installation diagram of the utility model (top view).
[0016] In the figure: base 1, circular measuring frame support arm 2, measuring rod 3, distance meter 4, connecting sleeve 5, locking bolt 6, level 7, counterweight 8, rotor 9, data collection panel 10, magnetic pole 11, pier 12. DETAILED DESCRIPTION
[0017] The preferred solution is Figure 1 to Figure 2 As shown, a rotor roundness and radius measuring device includes a base 1, which is installed at the center of the rotor top by bolts. The base 1 is connected to a circle measuring frame arm 2 through a rotating shaft. The axis of the rotating shaft coincides with the axis of the rotor. The end of the circle measuring frame arm 2 is detachably connected to a measuring rod 3. The measuring rod 3 is parallel to the axis of the rotor and is used to rotate around the axis of the rotor. A plurality of distance meters 4 are provided on the measuring rod 3.
[0018] The rangefinder 4 in this embodiment is a laser rangefinder, and multiple rangefinders 4 are arranged linearly. The number of laser rangefinders is 4-6. When the measuring rod 3 rotates around the outer side of the rotor, the laser rangefinder is used to collect multiple distance measurement points, and the total number of distance measurement points is 96. When the circular frame support arm 2 rotates a full circle, the distance to each magnetic pole is measured by this rangefinder, and then a full circle of data is obtained. The first data is set as the zero point, and the waviness of the full circle of magnetic poles, that is, the roundness, can be calculated.
[0019] Furthermore, a connecting sleeve 5 is provided on the top of the measuring rod 3, and the connecting sleeve 5 is connected to the circle measuring frame support arm 2 through a locking bolt 6. The connecting sleeve 5 is a rectangular square sleeve, and the cross section of the circle measuring frame support arm 2 is rectangular. A level 7 is provided on the top of the connecting sleeve 5. The verticality of the measuring rod 3 is adjusted by the level 7. The level 7 is a bubble level.
[0020] Furthermore, a counterweight block 8 is provided at the end of the circle measuring frame support arm 2, and the counterweight block 8 is arranged opposite to the measuring rod 3. The counterweight block 8 is used to adjust the balance of the left and right sides of the measuring rod 3 so that the rotating shaft will not be subjected to lateral tension. Specifically, the measuring rod 3 is connected to the rotating shaft through a bearing.
[0021] Preferably, a data collection panel is provided on the measuring rod 3 , and the data collection panel is used to display the data collected by the multiple rangefinders 4 .
[0022] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. A rotor roundness and radius measuring device, characterized in that: The invention comprises a base (1), wherein the base (1) is connected to a circle measuring frame support arm (2) via a rotating shaft, the axis of the rotating shaft coincides with the axis of the rotor, the end of the circle measuring frame support arm (2) is detachably connected to a measuring rod (3), the measuring rod (3) is parallel to the axis of the rotor, and the measuring rod (3) is used to rotate around the axis of the rotor; and a plurality of distance meters (4) are provided on the measuring rod (3).
2. A rotor roundness and radius measuring device according to claim 1, characterized in that: The rangefinder (4) is a laser rangefinder, and a plurality of rangefinders (4) are arranged linearly.
3. A rotor roundness and radius measuring device according to claim 1, characterized in that: A connecting sleeve (5) is provided on the top of the measuring rod (3), and the connecting sleeve (5) is connected to the circle measuring frame support arm (2) via a locking bolt (6).
4. A rotor roundness and radius measuring device according to claim 3, characterized in that: A level gauge (7) is provided on the top of the connecting sleeve (5).
5. A rotor roundness and radius measuring device according to claim 1, characterized in that: A counterweight (8) is provided at the end of the circle measuring frame support arm (2), and the counterweight (8) is arranged opposite to the measuring rod (3).