A motor rotor radius minimum clearance measuring device
Patent Information
- Application Number
- CN202522625880.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-12-11
AI Technical Summary
因操作人员施加力小点，通片即无法通过，施加力大点，止片即无法禁止，从而导致判定结果不可靠，同时在线人员站岗操作，容易因疲劳导致误判，漏检等问题；
[0015]通过将电机转子放置在输送机构顶部进行输送，通过输送机构将电机转子输送至检测工位的后方，利用滑轨架与滑杆带动夹具进行移动，通过夹具将电机转子夹持移动至支撑台上方，然后将电机转子插入支撑台的内侧，在插入时可以使曲轴与扭力传感器之间对接，通过启动间隙片运动机构将间隙片输送至电机转子的内侧，同时使间隙片位于曲轴一侧，通过带动曲轴旋转，利用间隙片运动机构代替人工手动将间隙片插入电机转子内侧，可以连续自动对曲轴与电机转子之间的间隙进行检测，当曲轴与电机转子的内壁距离较近时，利用间隙片运动机构导出的间隙片可以对旋转时的曲轴造成阻挡，可以使曲轴逐渐增大扭力对间隙片挤压并旋转，在挤压并通过间隙片时降低曲轴的扭力，当曲轴与电机转子内壁的距离较远时，可以使曲轴正常旋转，通过扭力传感器可以对曲轴旋转时的扭力进行检测，测量时，正常扭力值上升到间隙片报警值前下降，即间隙片能顺利通过，判定合格，若超出通片报警值，即表示间隙小于间隙片，导致曲轴压紧通片，使扭力增加，导致曲轴检测无法顺利通过，可以提高曲轴与电机转子之间间隙检测的精度。
Smart Images
Figure CN224873013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor rotor measurement technology, specifically a device for measuring the minimum clearance of motor rotor radius. Background Technology
[0002] The motor rotor is the rotating part of the motor. To meet different usage requirements, a crankshaft needs to be machined on the motor shaft. After machining, the gap between the main shaft and the cylinder block needs to be tested when the main shaft rotates. During the test, a motor rotor radius minimum gap measuring device is required.
[0003] The existing technology has the following problems: During measurement, clearance plates are typically inserted between the crankshaft and the lower cylinder block. Rotating the crankshaft results in the clearance plate passing through when inserted and failing when inserted, indicating a pass. However, in practical applications, because the clearance plate thickness is only 15μm-25μm, the force applied by the operator when rotating the crankshaft directly affects the product's pass / fail status. Too little force will prevent the clearance plate from passing, while too much force will prevent it from stopping, leading to unreliable results. Furthermore, on-line personnel operating the equipment are prone to misjudgments and missed inspections due to fatigue. It is inconvenient to continuously and automatically measure the gap between the motor rotor crankshaft and the cylinder block, and it is also inconvenient to control the torque when the crankshaft rotates during measurement, and it is inconvenient to accurately measure the gap between the crankshaft and the cylinder block when the crankshaft rotates. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] This invention provides a device for measuring the minimum clearance of a motor rotor radius, aiming to solve the problems mentioned in the background art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides a device for measuring the minimum clearance of a motor rotor radius, as follows: As a preferred technical solution of this application, it includes a conveying mechanism and a detection station disposed in front of the conveying mechanism. Multiple motor rotors are placed on the top of the conveying mechanism, and a crankshaft is rotatably mounted on the inner side of each motor rotor. Two slide rails are fixedly connected to the top of the detection station, one end of each slide rail extends above the conveying mechanism, and two clamps are movably connected to the inner side of each slide rail. Multiple support platforms are fixedly connected to the top of the detection station inside the two slide rails, and two gap plate moving mechanisms are fixedly mounted on the top of each support platform. A torque sensor is disposed at the bottom of each support platform.
[0008] As a preferred technical solution of this application, the top of the conveying mechanism is provided with multiple support frames, and the motor rotor is placed on top of the support frames.
[0009] As a preferred technical solution of this application, the top of the testing station is fixedly connected with multiple support columns, and each slide rail is fixedly installed on the top of two support columns.
[0010] As a preferred technical solution of this application, a slide rod is slidably connected between the two slide rail frames, and both clamps are slidably installed at the bottom of the slide rod.
[0011] As a preferred technical solution of this application, the top of the gap movement mechanism is movably connected with a quick-change buckle, and the outer side of the gap movement mechanism is fixedly connected with a winding motor.
[0012] As a preferred technical solution of this application, a waste plate recycling port is provided on the inner side of the support platform, and the waste plate recycling port corresponds to the spacer plate movement mechanism.
[0013] As a preferred technical solution of this application, a plug sleeve is fixedly connected to the top of the torque sensor, and the plug sleeve corresponds to the crankshaft.
[0014] (III) Beneficial Effects
[0015] By placing the motor rotor on top of the conveying mechanism for transport, the motor rotor is transported to the rear of the testing station. A sliding rail and slide rod move the clamp, which holds the motor rotor above the support platform. The motor rotor is then inserted into the inner side of the support platform. During insertion, the crankshaft and torque sensor are aligned. The gap plate movement mechanism is activated to transport the gap plate to the inner side of the motor rotor, positioning it on one side of the crankshaft. By rotating the crankshaft, the gap plate movement mechanism replaces manual insertion of the gap plate into the motor rotor, allowing for continuous and automatic detection of the gap between the crankshaft and the motor rotor. When the distance between the inner wall of the crankshaft and the inner wall of the motor rotor... When the distance between the crankshaft and the motor rotor is relatively short, the gap caused by the gap movement mechanism can obstruct the rotating crankshaft, gradually increasing the torque of the crankshaft to compress and rotate the gap. As the crankshaft compresses and passes through the gap, the torque of the crankshaft decreases. When the distance between the crankshaft and the inner wall of the motor rotor is relatively long, the crankshaft can rotate normally. The torque sensor can detect the torque of the crankshaft during rotation. During measurement, the normal torque value rises to the gap alarm value and then decreases, indicating that the gap can pass smoothly and is considered qualified. If the torque value exceeds the gap alarm value, it means that the gap is smaller than the gap, causing the crankshaft to press against the gap, increasing the torque, and preventing the crankshaft from passing smoothly. This can improve the accuracy of gap detection between the crankshaft and the motor rotor. Attached Figure Description
[0016] Figure 1 This is a schematic front view of a device for measuring the minimum clearance of a motor rotor radius. Figure 2 A top view schematic diagram of a device for measuring the minimum clearance of a motor rotor radius; Figure 3 A bottom view schematic diagram of a device for measuring the minimum clearance of a motor rotor radius; Figure 4 A rear view schematic diagram of a device for measuring the minimum clearance of a motor rotor radius; Figure 5 This is a schematic diagram of the left side view of a device for measuring the minimum clearance of a motor rotor radius. Figure 6 This is a schematic diagram of the right-side side view of a device for measuring the minimum clearance of a motor rotor radius. Figure 7 This is a three-dimensional structural diagram of a support platform in a device for measuring the minimum clearance of a motor rotor radius.
[0017] In the picture: 1. Conveying mechanism; 2. Inspection station; 3. Support frame; 4. Motor rotor; 5. Support column; 6. Slide rail frame; 7. Slide rod; 8. Fixture; 9. Support platform; 10. Crankshaft; 11. Gap plate movement mechanism; 12. Quick-change buckle; 13. Winding motor; 14. Waste plate recycling port; 15. Torque sensor; 16. Insertion sleeve. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] This utility model provides a device for measuring the minimum clearance of a motor rotor radius, such as... Figure 1-7 As shown, the device includes a conveying mechanism 1 and a testing station 2 located in front of the conveying mechanism 1. Multiple motor rotors 4 are placed on the top of the conveying mechanism 1, and a crankshaft 10 is rotatably mounted on the inner side of each motor rotor 4. Two slide rails 6 are fixedly connected to the top of the testing station 2, and one end of each slide rail 6 extends above the conveying mechanism 1. Two clamps 8 are movably connected to the inner side of the two slide rails 6. Multiple support platforms 9 are fixedly connected to the top of the testing station 2 inside the two slide rails 6. Two gap plate movement mechanisms 11 are fixedly mounted on the top of each support platform 9, and a torque sensor 15 is provided at the bottom of each support platform 9. Multiple support frames 3 are placed on top of the conveying mechanism 1, and the motor rotor 4 is placed on top of the support frames 3; Multiple support columns 5 are fixedly connected to the top of the inspection station 2, and each slide rail 6 is fixedly installed on the top of two support columns 5; A slide rod 7 is slidably connected between the two slide rails 6, and two clamps 8 are slidably installed at the bottom of the slide rod 7; The top of the gap movement mechanism 11 is movably connected with a quick-change buckle 12, and the outside of the gap movement mechanism 11 is fixedly connected with a winding motor 13. The inner side of the support platform 9 is provided with a waste plate recycling port 14, which corresponds to the gap plate movement mechanism 11; A plug sleeve 16 is fixedly connected to the top of the torque sensor 15, and the plug sleeve 16 corresponds to the crankshaft 10.
[0020] The working principle of a motor rotor radius minimum clearance measuring device based on the embodiment is as follows: by placing the motor rotor 4 on top of the support frame 3, the support frame 3 supports the motor rotor 4, and then placing the support frame 3 on top of the conveying mechanism 1, the conveying mechanism 1 is started and rotated to convey the support frame 3 and simultaneously convey the motor rotor 4. When the motor rotor 4 is transported to the rear of the testing station 2, the slide rail frame 6 is supported and fixed by the support column 5. The slide rail frame 6 drives the slide rod 7 to move backward, and simultaneously drives the clamp 8 to move backward. The clamp 8 clamps and fixes the motor rotor 4 on the top of the support frame 3. Then, the slide rod 7 and the clamp 8 are driven to move forward. The clamp 8 clamps and moves the motor rotor 4 to the top of the support platform 9. Then, the motor rotor 4 is inserted into the inside of the support platform 9. When inserted, one end of the crankshaft 10 can be inserted into the inside of the insertion sleeve 16, which can connect the crankshaft 10 and the torque sensor 15. By activating the gap movement mechanism 11, the gap can be transported to the inside of the motor rotor 4, and the gap is positioned on one side of the crankshaft 10. The torque sensor 15 is driven by the detection station 2, causing the torque sensor 15 to rotate the crankshaft 10. The gap movement mechanism 11 replaces manual insertion of the gap into the inside of the motor rotor 4, and the gap between the crankshaft 10 and the motor rotor 4 can be continuously and automatically detected. When the distance between the crankshaft 10 and the inner wall of the motor rotor 4 is relatively close, the gap plate generated by the gap plate movement mechanism 11 can block the rotating crankshaft 10, which can gradually increase the torque of the crankshaft 10 to squeeze and rotate the gap plate. When squeezing and passing through the gap plate, the torque of the crankshaft 10 is reduced. When the distance between the crankshaft 10 and the inner wall of the motor rotor 4 is relatively far, the crankshaft 10 can rotate normally. The torque sensor 15 can detect the torque of the crankshaft 10 when it rotates. During measurement, the normal torque value rises to the gap alarm value and then drops, meaning the gap can pass smoothly and is considered qualified. If it exceeds the gap alarm value, it means the gap is smaller than the gap, causing the crankshaft 10 to press against the gap, increasing the torque and making it impossible for the crankshaft 10 to pass smoothly. This can improve the accuracy of the gap detection between the crankshaft 10 and the motor rotor 4. By moving the quick-change buckle 12, the gap can be easily and quickly disassembled and replaced. The gap movement mechanism 11 can cut off the used gap and then export and collect it through the waste plate recycling port 14.
[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for measuring the minimum clearance of a motor rotor radius, comprising a conveying mechanism (1) and a detection station (2) disposed in front of the conveying mechanism (1), characterized in that: Multiple motor rotors (4) are placed on the top of the conveying mechanism (1). A crankshaft (10) is rotatably installed on the inner side of each motor rotor (4). Two slide rails (6) are fixedly connected to the top of the inspection station (2). One end of each slide rail (6) extends above the conveying mechanism (1). Two clamps (8) are movably connected to the inner side of each slide rail (6). Multiple support platforms (9) are fixedly connected to the top of the inspection station (2) inside the two slide rails (6). Two gap plate movement mechanisms (11) are fixedly installed on the top of each support platform (9). A torque sensor (15) is provided at the bottom of each support platform (9).
2. The motor rotor radius minimum clearance measuring device according to claim 1, characterized in that: The conveying mechanism (1) has multiple support frames (3) on top, and the motor rotor (4) is placed on top of the support frames (3).
3. The motor rotor radius minimum clearance measuring device according to claim 1, characterized in that: The top of the testing station (2) is fixedly connected to multiple support columns (5), and each slide rail frame (6) is fixedly installed on the top of two support columns (5).
4. The motor rotor radius minimum clearance measuring device according to claim 1, characterized in that: A slide rod (7) is slidably connected between the two slide rail frames (6), and both clamps (8) are slidably installed at the bottom of the slide rod (7).
5. The motor rotor radius minimum clearance measuring device according to claim 1, characterized in that: The top of the gap movement mechanism (11) is movably connected to a quick-change buckle (12), and the outside of the gap movement mechanism (11) is fixedly connected to a winding motor (13).
6. The motor rotor radius minimum clearance measuring device according to claim 1, characterized in that: The inner side of the support platform (9) is provided with a waste plate recycling port (14), which corresponds to the gap plate movement mechanism (11).
7. The motor rotor radius minimum clearance measuring device according to claim 1, characterized in that: The top of the torque sensor (15) is fixedly connected to a plug sleeve (16), which corresponds to the crankshaft (10).