A rotor shaft runout detector

Abstract

This utility model discloses a rotor shaft runout detector, including a base. The base includes a bottom plate and mounting plates fixed to the left and right sides of the bottom plate. A support platform and a slide block are slidably connected to the bottom plate. Two primary support shafts are mounted on the support platform, and a secondary support shaft, coaxial with the two primary support shafts and having the same outer diameter, is mounted on the mounting plate on the left side. This utility model supports the rotor shaft using the primary and secondary support shafts to facilitate runout testing. Furthermore, because the mounting plate on the right side is lowered, the rotor shaft can extend to the right side of the base, increasing the applicability of this utility model. This utility model also uses a pressure roller to press the rotor shaft before runningout detection, improving detection accuracy. In addition, when the pressure roller unlocks and rises, this utility model can automatically unload the rotor shaft, improving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rotor shaft technology, and in particular to a rotor shaft runout detector. Background Technology

[0002] The rotor shaft is a core transmission component in equipment such as motors and generators, used to transmit torque and realize energy conversion.

[0003] After production, rotor shafts need to undergo runout testing to prevent problems such as increased vibration, noise, and bearing overheating during motor or generator operation. However, as shown in the rotor shaft runout testing device disclosed in application number 202421835084.6, current rotor shaft testing devices generally require manual loading and unloading by operators. This results in operators having to place the tested rotor shaft before clamping and testing another rotor shaft, making the actual operation cumbersome and inefficient. Therefore, improvements are needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a rotor shaft runout detector to solve the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a rotor shaft runout detector, including a base, the base including a bottom plate and mounting plates fixed to the left and right sides of the bottom plate, and a bearing platform and a sliding seat slidably connected to the bottom plate in the left and right directions and in the front and back directions;

[0006] The support platform is equipped with two No. 1 support shafts distributed front and rear, and the mounting plate on the left side is equipped with a No. 2 support shaft that is coaxial with the two No. 1 support shafts and has the same outer diameter.

[0007] The sliding block is slidably connected to a connecting plate. The front end of the connecting plate is equipped with a boss, and the boss is located between the front and rear No. 1 support shafts. It also includes a lifting control component for controlling the lifting of the connecting plate. The front sides of the two mounting plates are connected to an arc-shaped receiving plate.

[0008] The mounting plate on the left is equipped with a rotary motor for driving one of the second support shafts, and the right side of the support platform is equipped with a runout measuring instrument.

[0009] Preferably, a lifting platform is slidably connected inside the slide block, and a pressing component acting on the rotor shaft on the second support shaft and the first support shaft is installed on the front side of the lifting platform. A threaded shaft threaded to the lifting platform is rotatably connected inside the slide block, and a lifting motor for driving the threaded shaft to rotate is installed on the slide block. A first through hole for accommodating the threaded shaft is provided in the connecting plate.

[0010] Preferably, the lifting control assembly includes a slide rod fixed to the connecting plate and extending upward through the lifting platform. The upper end of the slide rod is equipped with a frustum, the diameter of which is not less than the diameter of the second through hole in the lifting platform used to accommodate the slide rod.

[0011] Preferably, the pressing assembly includes a fixed frame fixed to the front side of the lifting platform, and a movable frame is slidably connected between the fixed frame and the front side of the lifting platform. Two pressure rollers distributed front and rear are rotatably connected inside the movable frame.

[0012] Preferably, the upper end of the movable frame is equipped with a trigger platform, and the fixed frame is equipped with a pressure sensor directly opposite the trigger platform.

[0013] Preferably, three crossbars are installed between the two mounting plates on the left and right sides, distributed front to back. The support platform is slidably connected to the two crossbars on the front side, and the slide block is slidably connected to the crossbar on the rear side. The slide block is also slidably connected to the base plate.

[0014] Preferably, the rear end of the receiving plate is slidably connected to a rearwardly extending connecting plate.

[0015] Preferably, the height of the mounting plate on the right side is not higher than that of the first support shaft and the second support shaft.

[0016] This invention provides a rotor shaft runout detector, which has the following advantages:

[0017] This utility model supports the rotor shaft with a first support shaft and a second support shaft to facilitate runout testing. Furthermore, because the mounting plate on the right side of this utility model is lowered in height, the rotor shaft can extend to the right side of the base, thus increasing the applicability of this utility model.

[0018] This invention also uses a pressure roller to press the rotor shaft and then performs runout detection, improving detection accuracy. In addition, when the pressure roller is unlocked and rises, this invention can automatically unload the rotor shaft, improving efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0020] Figure 2 This is a schematic diagram of the right-side structure within this utility model.

[0021] In the picture:

[0022] 11. Base plate; 12. Mounting plate; 13. Support platform; 14. Slide seat; 15. Support shaft No. 1; 16. Support shaft No. 2; 17. Connecting plate; 18. Boss; 19. Arc-shaped support plate; 20. Rotary motor; 21. Runout measuring instrument; 22. Lifting platform; 23. Threaded shaft; 24. Lifting motor; 25. Slide rod; 26. Frustum; 31. Fixed frame; 32. Movable frame; 33. Pressure roller; 34. Trigger platform; 41. Crossbar; 51. Connecting plate. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figures 1-2According to an embodiment of the rotor shaft runout detector of this utility model, it includes a base, the base including a bottom plate 11 and mounting plates 12 fixed on the left and right sides of the bottom plate 11. The bottom plate 11 is slidably connected to a support platform 13 and a slide block 14 distributed front to back. Specifically, the installation method is that three crossbars 41 distributed front to back are installed between the two mounting plates 12 on the left and right sides. The support platform 13 is slidably connected to the two crossbars 41 on the front side, and the slide block 14 is slidably connected to the crossbar 41 on the rear side. The slide block 14 is also slidably connected to the bottom plate 11 to avoid shaking.

[0028] The support platform 13 is equipped with two primary support shafts 15 distributed front to back. The mounting plate 12 on the left side is equipped with secondary support shafts 16 that are coaxial with the two primary support shafts 15 and have the same outer diameter. The operator can adjust the left and right position of the support platform 13 to accommodate rotor shafts of different specifications. The operator can place the rotor shaft on the secondary support shaft 16 and the primary support shaft 15 to support the rotor shaft. The mounting plate 12 on the left side is equipped with a rotary motor 20 for driving one of the secondary support shafts 16. The right side of the support platform 13 is equipped with a runout measuring instrument 21. When the rotary motor 20 is powered on, it will drive the rotor shaft to rotate, thereby enabling the runout measuring instrument 21 to detect the radial runout of the rotor shaft.

[0029] In addition, a connecting plate 17 is slidably connected to the slide block 14. The front end of the connecting plate 17 is equipped with a boss 18, and the boss is located between the front and rear first support shafts 15. It also includes a lifting control component for controlling the lifting and lowering of the connecting plate 17. The front sides of the two mounting plates 12 are connected to an arc-shaped receiving plate 19. When the connecting plate 17 is raised in a controlled manner, the boss 18 can push the rotor shaft located on the second support shaft 16 and the first support shaft 15 upward. Since the upper side of the boss 18 is a sloped surface that tilts backward and upward, the boss 18 will cause the rotor shaft to roll forward onto the arc-shaped receiving plate 19 when it is raised, so as to complete the automatic unloading. Furthermore, a flexible layer can be provided on the upper side of the arc-shaped receiving plate 19 to avoid scratches.

[0030] In addition, to prevent the rotor shafts on the second support shaft 16 and the first support shaft 15 from rolling relative to the second support shaft 16, a lifting platform 22 is slidably connected inside the slide block 14. The front side of the lifting platform 22 is equipped with a pressing component that acts on the rotor shafts on the second support shaft 16 and the first support shaft 15. A threaded shaft 23 is rotatably connected inside the slide block 14 and threadedly connected to the lifting platform 22. A lifting motor 24 for driving the threaded shaft 23 to rotate is mounted on the slide block 14. The connecting plate 17 is provided with a first through hole for accommodating the threaded shaft 23 to avoid interference. The pressing component includes a fixed frame 31 fixed to the front side of the lifting platform 22. A movable frame 32 is slidably connected between the fixed frame 31 and the front side of the lifting platform 22. Two pressure rollers 33 distributed front and rear are rotatably connected inside the movable frame 32.

[0031] The lifting motor 24 can control the lifting platform 22 to rise and fall by controlling the rotation of the threaded shaft 23. After the rotor shaft is placed on the first support shaft 15 and the second support shaft 16, the lifting platform 22 can descend and press the pressure roller 33 onto the rotor shaft to further stabilize the rotor shaft.

[0032] Furthermore, the upper end of the movable frame 32 is equipped with a trigger platform 34, and the fixed frame 31 is equipped with a pressure sensor directly opposite the trigger platform 34. It can be set to stop the movement of the lifting platform 22 after the pressure sensor senses a certain pressure, so that the pressure of the pressure roller 33 acting on the rotor shaft is adjustable.

[0033] In addition, the lifting control assembly includes a slide rod 25 fixed to the connecting plate 17 and extending upward through the lifting platform 22. The upper end of the slide rod 25 is equipped with a frustum 26, and the diameter of the frustum 26 is not less than the diameter of the second through hole in the lifting platform 22 used to accommodate the slide rod 25.

[0034] After the rotor shaft runout detection is completed, the lifting platform 22 can rise and release the locking of the rotor shaft. When the lifting platform 22 abuts against the truncated cone 26 and continues to rise, the lifting platform 22 can lift the connecting plate 17 upward through the truncated cone 26 and the slide rod 25, so as to push the rotor shaft placed on the second support shaft 16 and the first support shaft 15 forward through the boss 18 and make it roll into the arc-shaped receiving plate 19 to complete the unloading.

[0035] Furthermore, the rear end of the receiving plate 19 is slidably connected to a rearwardly extending connecting plate 51. The rotor shaft, which is propelled by the boss 18, will contact the connecting plate 51 and then roll into the arc-shaped receiving plate 19. The connecting plate 51 can be adjusted left and right to adapt to rotor shafts of different specifications.

[0036] It should be noted that, in the above embodiments, the runout measuring instrument 21 can only detect the runout of the rotor shaft at a single position on the left or right. However, in the second embodiment of the rotor shaft runout detector, a slide table can be slidably connected to the crossbar 41 on the rearmost side. A lever dial indicator can also be set on the slide table (through a magnetic base). The slide table can slide left and right, and the radial runout of the clamped rotor shaft can be detected at multiple positions through the lever dial indicator.

[0037] Furthermore, the slides can be respectively located on the left and right sides of the slide block 14.

[0038] During the test, the support platform 13, the slide block 14 and the slide table will remain stationary under the action of friction when no external force is applied.

[0039] Furthermore, the height of the mounting plate 12 on the right side will not be higher than the first support shaft 15 and the second support shaft 16, so that the rotor shaft supported by the first support shaft 15 and the second support shaft 16 can extend to the right side of the base.

[0040] The support platform 13 can be heightened to increase the distance between the first support shaft 15 and the second support shaft 16 and the crossbar 41, and the slide block 14 can be heightened to increase the vertical travel of the lifting platform 22 to accommodate rotor shafts with larger outer diameters.

[0041] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A rotor shaft run-out detector comprising a base, characterised in that: The base includes a base plate (11) and mounting plates (12) fixed to the left and right sides of the base plate (11). The base plate (11) is slidably connected to a bearing platform (13) and a sliding seat (14) distributed in front and behind. The support platform (13) is equipped with two No. 1 support shafts (15) distributed in front and behind, and the mounting plate (12) on the left side is equipped with a No. 2 support shaft (16) that is coaxial with the two No. 1 support shafts (15) and has the same outer diameter. The sliding block (14) is connected to a connecting plate (17) that slides up and down. The front end of the connecting plate (17) is equipped with a boss (18), and the boss (18) is located between the front and rear No. 1 support shaft (15). It also includes a lifting control component for controlling the lifting of the connecting plate (17). The front sides of the two mounting plates (12) are connected to an arc-shaped receiving plate (19). The mounting plate (12) on the left is equipped with a rotary motor (20) for driving one of the second support shafts (16), and the right side of the support platform (13) is equipped with a runout measuring instrument (21).

2. A rotor shaft run-out detector according to claim 1, characterised in that: The slide (14) is slidably connected to a lifting platform (22). The front side of the lifting platform (22) is equipped with a pressing component that acts on the rotor shaft on the second support shaft (16) and the first support shaft (15). The slide (14) is rotatably connected to a threaded shaft (23) that is threaded to the lifting platform (22). The slide (14) is equipped with a lifting motor (24) for driving the threaded shaft (23) to rotate. The connecting plate (17) is provided with a first through hole for accommodating the threaded shaft (23).

3. A rotor shaft run-out detector according to claim 2, characterised in that: The lifting control assembly includes a slide rod (25) fixed on the connecting plate (17) and extending upward through the lifting platform (22). The upper end of the slide rod (25) is equipped with a frustum (26), and the diameter of the frustum (26) is not less than the diameter of the second through hole in the lifting platform (22) used to accommodate the slide rod (25).

4. A rotor shaft run-out detector according to claim 2, characterised in that: The pressing assembly includes a fixed frame (31) fixed to the front side of the lifting platform (22), and a movable frame (32) is slidably connected between the fixed frame (31) and the front side of the lifting platform (22). Two pressure rollers (33) are rotatably connected inside the movable frame (32).

5. A rotor shaft run-out detector according to claim 4, characterised in that: The upper end of the movable frame (32) is equipped with a trigger platform (34), and the fixed frame (31) contains a pressure sensor directly opposite the trigger platform (34).

6. A rotor shaft runout detector according to claim 1, characterized in that: Three crossbars (41) are installed between the two mounting plates (12) on the left and right sides, and the support platform (13) is slidably connected to the two crossbars (41) on the front side. The slide (14) is slidably connected to the crossbar (41) on the rear side, and the slide (14) is also slidably connected to the base plate (11).

7. A rotor shaft runout detector according to claim 1, characterized in that: The rear end of the receiving plate (19) is slidably connected to a rearwardly extending connecting plate (51).

8. A rotor shaft runout detector according to claim 1, characterized in that: The height of the mounting plate (12) on the right side is not higher than that of the first support shaft (15) and the second support shaft (16).

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