Friction torque detection device of motor output shaft
By using a motor-driven friction torque detection device with a torque meter and mounting base structure, the problems of high labor costs and low detection accuracy in existing technologies are solved, achieving efficient and accurate friction torque detection and reducing the defect rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-14
AI Technical Summary
Existing methods for detecting the friction torque of motor output shafts rely on spring scales and rotating wheels, resulting in high labor costs and low detection accuracy, which affects detection quality and increases the defect rate.
The friction torque detection device, driven by a motor, utilizes a torque meter and mounting base structure. The motor drives the output shaft and torque meter to rotate, thereby achieving accurate detection of friction torque.
It reduced labor costs, improved testing accuracy, and significantly reduced the defect rate.
Smart Images
Figure CN224122086U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of motor output shaft testing equipment, and in particular to a device for detecting the friction torque of a motor output shaft. Background Technology
[0002] Torque: The product (M) of force (F) and lever arm (L). That is: M = F·L. Where L is the vector from the axis of rotation to the force, and F is the vector force. Therefore, frictional torque is the product of frictional force and frictional lever arm.
[0003] Currently, the existing method for detecting the friction torque of a motor output shaft mainly relies on a spring scale and a rotating wheel. The hook end of the spring scale is connected to the moving end of the rotating wheel, and the output shaft is placed on the axis of the rotating wheel. The friction torque of the motor output shaft is then detected by manually rotating the rotating wheel. However, this method is labor-intensive, increasing labor costs, and lacks accuracy, which greatly affects the quality of the test and leads to a higher defect rate. Based on this, we propose a device for detecting the friction torque of a motor output shaft. Utility Model Content
[0004] In view of the shortcomings of the prior art, this utility model provides a friction torque detection device for the output shaft of a motor. After development, this detection device can effectively solve the problems mentioned in the background art.
[0005] The technical solution of this utility model is as follows:
[0006] A friction torque detection device for a motor output shaft includes a housing, inside which a motor is installed. The output shaft of the motor is connected to a mounting base, and the other end of the mounting base extends to the top surface of the housing. An adjusting lifting plate is also installed on the top surface of the housing. A clamp is connected to the moving end of the adjusting lifting plate, and a torque meter is installed on the clamp. A mounting hole is provided in the middle of the top surface of the mounting base, and the bottom end of the torque meter abuts against the mounting hole.
[0007] Furthermore, a connecting shell is bolted to the inner top of the chassis.
[0008] Furthermore, the mounting base includes a column and a wheel, which are integrally formed. The column is located inside the chassis, and the wheel is located outside the chassis. The mounting hole is located in the middle of the top surface of the wheel, and a bearing is connected between the column and the connecting shell.
[0009] Furthermore, the adjusting lifting plate includes a fixed plate, a connecting block, a slider, a slide rail, and a fastening nut. The fixed plate is fixedly installed on the top surface of the chassis by bolts. An adjustment hole is provided on the left side of the fixed plate. A slide rail is integrally formed and connected to the inner right end of the fixed plate. A connecting block is provided at the inner end of the fixed plate and located at the adjustment hole. A screw hole is provided in the middle of the rear end of the connecting block. A fastening nut is connected to the connecting block through the screw hole. The fastening nut is located at the outer end of the fixed plate. A slider is fixedly connected to the front end of the connecting block by bolts. One end of the slider is slidably connected to the slide rail, and the other end of the slider is fixedly connected to the clamp by bolts.
[0010] Furthermore, the clamp includes a body, a first support rod, and a second support rod. The other end of the slider is fixedly connected to the body by bolts. The first support rod and the second support rod are respectively inserted into the front and rear positions of the body.
[0011] Furthermore, the main body, the first support rod, and the second support rod enclose a mounting cavity, and the torque meter is placed in the mounting cavity.
[0012] The beneficial effects of this utility model are as follows:
[0013] Compared with existing technologies, this utility model, by incorporating a motor, mounting base, adjusting lifting plate, and clamp, mounts the output shaft at the mounting hole of the mounting base, and mounts the torque meter on the clamp. The bottom of the torque meter is inserted into the mounting hole and engaged with the output shaft. After the motor starts, it drives the mounting base to rotate, which in turn drives the torque meter to rotate. At this time, the frictional torque of the output shaft can be read from the torque meter. This device not only changes the problem of high labor costs associated with traditional technologies that use spring scales and rotating wheels, but also reduces labor costs. Furthermore, this device has high operational precision, effectively improving the detection quality of the output shaft and thus greatly reducing the defect rate. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of this utility model after the chassis has been disassembled;
[0016] Figure 3 This is a schematic diagram of the structure of the present invention after the torque meter has been disassembled;
[0017] Figure 4 This is a schematic diagram of the structure of the mounting base of this utility model.
[0018] In the diagram, 1. Chassis; 2. Motor; 3. Mounting base; 4. Adjusting lifting plate; 5. Clamp; 6. Torque meter; 7. Mounting hole; 8. Connecting shell; 9. Column; 10. Wheel; 11. Fixing plate; 12. Connecting block; 13. Slider; 14. Slide rail; 15. Fastening nut; 16. Adjusting hole; 17. Body; 18. First support rod; 19. Second support rod; 20. Mounting cavity. Detailed Implementation
[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:
[0020] like Figure 1-4 As shown,
[0021] A device for detecting the frictional torque of a motor output shaft includes a housing 1, inside which a motor 2 is installed. The output shaft of the motor 2 is connected to a mounting base 3, the other end of which extends to the top surface of the housing 1. An adjusting lifting plate 4 is also installed on the top surface of the housing 1. A clamp 5 is connected to the moving end of the adjusting lifting plate 4, and a torque meter 6 is mounted on the clamp 5. A mounting hole 7 is provided in the center of the top surface of the mounting base 3, and the bottom end of the torque meter 6 abuts against the mounting hole 7. In this application, by using a torque meter 6 and a motor 2 for driving, the detection accuracy is significantly improved. Previously, manual rotation of a handle to drive a rotating wheel resulted in inconsistent worker speeds, affecting detection accuracy to some extent. Furthermore, the detection accuracy using a spring scale is lower than that of the torque meter 6. Therefore, using a torque meter 6 in conjunction with this device will greatly improve the accuracy of detecting the frictional torque of the output shaft.
[0022] In a preferred embodiment, a connecting shell 8 is bolted to the inner top of the chassis 1. The connecting shell 8 serves to connect the mounting base 3, so that one part of the mounting base 3 is located inside the chassis 1 and the other part is located outside the chassis 1, thereby facilitating the detection of the output shaft.
[0023] In a preferred embodiment, the mounting base 3 includes a column portion 9 and a wheel portion 10, which are integrally formed. The column portion 9 is located inside the housing 1, and the wheel portion 10 is located outside the housing 1. The mounting hole 7 is located in the center of the top surface of the wheel portion 10. A bearing is connected between the column portion 9 and the connecting shell 8. It is understood that the bearing has both transmission and support functions, ensuring that when the motor 2 drives the column portion 9 to rotate (the output shaft of the motor 2 is connected to the column portion 9, enabling it to rotate), it can effectively drive the wheel portion 10 to rotate, preventing the wheel portion 10 from shifting and thus ensuring detection accuracy.
[0024] In a preferred embodiment, the adjusting lifting plate 4 includes a fixed plate 11, a connecting block 12, a slider 13, a slide rail 14, and a fastening nut 15. The fixed plate 11 is fixedly installed on the top surface of the housing 1 by bolts. An adjusting hole 16 is provided on the left side of the fixed plate 11. The slide rail 14 is integrally formed and connected to the inner right end of the fixed plate 11. The connecting block 12 is provided at the inner end of the fixed plate 11 and located at the adjusting hole 16. A screw hole is provided in the middle of the rear end of the connecting block 12. The fastening nut 15 is connected to the connecting block 12 through the screw hole. The fastening nut 15 is located at the outer end of the fixed plate 11. The slider 13 is fixedly connected to the front end of the connecting block 12 by bolts. One end of the slider 13 is slidably connected to the slide rail 14, and the other end of the slider 13 is fixedly connected to the clamp 5 by bolts. It is understandable that when the fastening nut 15 is loosened by rotation, the connecting block 12 can move up and down at the adjusting hole 16 (the adjusting hole 16 also has a limiting function), thereby driving the slider 13 and the clamp 5 to move up and down; the sliding connection between the slider 13 and the slide rail 14 not only makes it easier for the user to adjust, but also effectively improves the stability during sliding, thereby improving the accuracy of the vertical distance position adjustment of the clamp 5.
[0025] In a preferred embodiment, the clamp 5 includes a body 17, a first support rod 18, and a second support rod 19. The other end of the slider 13 is fixedly connected to the body 17 by bolts. The first support rod 18 and the second support rod 19 are respectively inserted into the front and rear positions of the body 17. It can be understood that the first support rod 18 and the second support rod 19 are provided to facilitate the installation of the torque meter 6 and to abut against the head of the torque meter 6. Moreover, it also facilitates the installation and removal of the torque meter 6. One of the support rods can be removed (the body 17 is provided with a connection hole for the support rod insertion), and then the torque meter 6 can be placed into the mounting cavity 20. Then the support rod can be inserted again. At this time, the first support rod 18 and the second support rod 19 will effectively abut against the front and rear ends of the torque meter 6.
[0026] In a preferred embodiment, the body 17, the first support rod 18, and the second support rod 19 enclose a mounting cavity 20, and the torque meter 6 is placed in the mounting cavity 20. The mounting cavity 20 is just enough to hold the torque meter 6 (there will also be some friction between the inner surface of the body 17 and the torque meter 6). Because the torque meter 6 vibrates very little when detecting rotation, there will be no shaking or micro-movement when the torque meter 6 is working after installation, thus ensuring detection accuracy.
[0027] The working principle of this invention is as follows: First, place the output shaft to be tested into the mounting hole 7 of the mounting base 3. Then, adjust the vertical position of the torque meter 6 (by adjusting the lifting plate 4) so that the bottom of the torque meter 6 is inserted into the mounting hole 7 and engaged with the output shaft. Next, start the motor 2 to drive the mounting base 3 to rotate, which in turn drives the output shaft and the torque meter 6 to rotate. At this time, the friction torque can be read on the torque meter 6. After the test is completed, loosen the fastening nut 15, lift the torque meter 6, remove the tested output shaft, and insert a new output shaft for testing. Then, lower the clamp 5 and the torque meter 6 so that the torque meter 6 returns to the testing position. Finally, tighten the fastening nut 15, and repeat this cycle. (Alternatively, you can directly lift the torque meter 6.)
[0028] It should be pointed out that the main problem with the existing technology is that the existing friction torque detection of the motor output shaft mainly relies on spring scales and rotating wheels. However, this method consumes a lot of labor, increasing the labor cost of workers, and the accuracy is not enough, which greatly affects the quality of detection and leads to an increase in the defect rate.
[0029] Therefore, through the improvements made in this application, this device not only changes the problem of high labor costs associated with the traditional method of using spring scales and rotating wheels, thus reducing labor costs, but also has higher operational precision, effectively improving the detection quality of the output shaft and thereby greatly reducing the defect rate.
[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A device for detecting the frictional torque of a motor output shaft, comprising a housing, characterized in that: The chassis houses a motor, and the output shaft of the motor is connected to a mounting base. The other end of the mounting base extends to the top surface of the chassis. An adjustable lifting plate is also installed on the top surface of the chassis. A clamp is connected to the moving end of the adjustable lifting plate, and a torque meter is installed on the clamp. A mounting hole is provided in the middle of the top surface of the mounting base, and the bottom end of the torque meter abuts against the mounting hole.
2. The friction torque detection device for a motor output shaft according to claim 1, characterized in that: The inner top of the chassis is bolted with a connecting shell.
3. The friction torque detection device for a motor output shaft according to claim 2, characterized in that: The mounting base includes a column and a wheel, which are integrally formed. The column is located inside the chassis, and the wheel is located outside the chassis. The mounting hole is located in the middle of the top surface of the wheel, and a bearing is connected between the column and the connecting shell.
4. The friction torque detection device for a motor output shaft according to claim 3, characterized in that: The adjusting lifting plate includes a fixed plate, a connecting block, a slider, a slide rail, and a fastening nut. The fixed plate is fixedly installed on the top surface of the chassis by bolts. An adjustment hole is provided on the left side of the fixed plate. A slide rail is integrally formed and connected to the inner right end of the fixed plate. A connecting block is provided at the inner end of the fixed plate and at the adjustment hole. A screw hole is provided in the middle of the rear end of the connecting block. A fastening nut is connected to the connecting block through the screw hole. The fastening nut is located at the outer end of the fixed plate. A slider is fixedly connected to the front end of the connecting block by bolts. One end of the slider is slidably connected to the slide rail, and the other end of the slider is fixedly connected to a clamp by bolts.
5. The friction torque detection device for a motor output shaft according to claim 4, characterized in that: The clamp includes a body, a first support rod and a second support rod. The other end of the slider is fixedly connected to the body by bolts. The first support rod and the second support rod are respectively inserted into the front and rear positions of the body.
6. The friction torque detection device for a motor output shaft according to claim 5, characterized in that: The main body, the first support rod, and the second support rod enclose a mounting cavity, and the torque meter is placed in the mounting cavity.