Dial indicator fixing clamp for motor detection

Abstract

The utility model discloses a dial indicator fixing clamp for motor detection, which comprises a flange plate, a motor shaft movably connected to the center of the flange plate, a circular screw fixedly connected to the upper end of the motor shaft, a first connecting rod fixedly connected to the upper end of the circular screw, and a rotating arm group movably connected to one end of the first connecting rod. The rotating arm group comprises two rotating arms, and the rotating ends of the two rotating arms are connected with each other; through the connection between the circular screw rod and the motor shaft, the cooperative use of the clamping ball and the universal groove, and the connection between the positioning clamping groove and the positioning clamping block, the overall connection has stronger stability and reliability, and is not influenced by factors such as vibration, temperature and an external magnetic field; it is ensured that the dial indicator is always firmly fixed to a designated position in the detection process, the risk of falling possibly occurring in a traditional magnetic attraction mode is effectively avoided, measurement errors caused by displacement of the dial indicator are eliminated, and the reliability of planeness data of the flange face is ensured.

Description

Technical Field

[0001] This utility model relates to the field of motor testing technology, specifically a dial indicator fixing fixture for motor testing. Background Technology

[0002] Motor flanges are key mechanical components connecting motors to driven equipment. They are typically circular or square metal discs with multiple bolt holes. They are bolted to the end of the motor housing and also mate with the input shaft flanges of equipment such as gearboxes, pumps, and fans to achieve torque transmission and axial positioning. Depending on the application, flanges can be categorized into standard, customized, and lightweight types.

[0003] In the motor manufacturing process, the flatness of the flange surface is a key indicator affecting the assembly accuracy and operational stability of the entire machine. Currently, the flatness inspection of motors before they enter the warehouse uses a dial indicator with a magnetic base, which is attached to the outer surface of the motor shaft for measurement. However, since the diameter of motor shafts is generally small, the contact area of ​​the magnetic base is insufficient, resulting in insecure fixation. Displacement or detachment can easily occur during the measurement process. This problem not only reduces the inspection efficiency but also affects the accuracy of the measurement results, which may lead to subsequent assembly defects or operational failures. To address this, we propose a dial indicator fixing fixture for motor inspection. Utility Model Content

[0004] One of the technical problems this application aims to solve is the issue of unstable magnetic fixation, where slight vibrations or touches can cause the dial indicator to deviate, requiring repeated adjustments and affecting detection efficiency.

[0005] To address the aforementioned technical problems, this application provides a dial indicator fixing fixture for motor testing, comprising a flange, a motor shaft movably connected to the center of the flange, a circular screw fixedly connected to the upper end of the motor shaft, a first connecting rod fixedly connected to the upper end of the circular screw, a rotating arm assembly movably connected to one end of the first connecting rod, the rotating arm assembly comprising two rotating arms whose rotating ends are connected to each other, a first tensioning handle movably connected to one side of the rotating arm assembly, the first tensioning handle being movably connected to one side of the connection position of the two rotating arms, and a second connecting rod movably connected to the other end of the rotating arm assembly, a snap-fit ​​component fixedly connected to one side of the second connecting rod.

[0006] Preferably, a flatness tester is fixedly connected to one end of the snap-fit ​​component, a percentage indicator is fixedly connected to one side surface of the flatness tester, a test rod is movably connected to the lower end of the flatness tester, and a test probe is fixedly connected to the lower end of the test rod.

[0007] Preferably, a first internal thread groove is formed on one side surface of the motor shaft, and an external thread is provided at the lower end of the circular screw. The end of the circular screw with the external thread is movably connected to the inside of the first internal thread groove, and the end of the circular screw with the external thread is adapted to the inside of the first internal thread groove.

[0008] Preferably, a second internal thread groove is formed on one side surface of the upper end of the circular screw, a connecting screw is fixedly connected to the lower end of the first connecting rod, the connecting screw and the second internal thread groove are adapted to each other, a closing cover is fixedly connected to the lower end of the first connecting rod, and the closing cover is movably connected to the upper end of the circular screw.

[0009] Preferably, one end of the first connecting rod and one end of the second connecting rod are fixedly connected to a snap-fit ​​ball, and one end of the two rotating arms of the rotating arm assembly is fixedly connected to a snap-fit ​​handle. A universal groove is provided on one side of the snap-fit ​​handle, and the snap-fit ​​ball and the universal groove are mutually adapted to each other.

[0010] Preferably, a positioning slot is provided on one side surface of the snap-fit ​​component, and a positioning block is fixedly connected to one side surface of the flatness detector, wherein the positioning slot and the positioning block are mutually compatible.

[0011] Preferably, a second tensioning handle is movably connected to one side surface of the snap-fit ​​component.

[0012] This utility model has at least the following beneficial effects:

[0013] 1. This utility model achieves stronger stability and reliability in the overall connection through the connection between the circular screw and the motor shaft, the cooperation between the snap-fit ​​ball and the universal groove, and the connection between the positioning slot and the positioning block. It is unaffected by factors such as vibration, temperature and external magnetic field, ensuring that the dial indicator is always firmly fixed in the designated position during the testing process. This effectively avoids the risk of falling off that may occur with traditional magnetic attraction methods, eliminates measurement errors caused by dial indicator displacement, and ensures the reliability of flange surface flatness data.

[0014] 2. This utility model, through the cooperation of the snap-fit ​​ball and the universal groove, achieves the adjustment of the rotating arm assembly angle while ensuring the overall stable placement. This allows the testing equipment to be precisely adjusted and stably fixed according to the actual position of the flange. At the same time, the snap-fit ​​component is connected to the flatness tester through the positioning slot and positioning block. The size of the positioning slot is effectively adjusted using the second tension handle, improving the stability and adjustability of the connection. This ensures that during the testing process, the testing probe is always closely attached to the upper edge of the flange to accurately and continuously collect the flatness data of the flange surface, thus ensuring the stability of the overall testing process and the accuracy of the test results. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention from a frontal perspective;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention from a right-side view.

[0017] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the three-dimensional structure of region A in the middle;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention from a right-side view.

[0019] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the three-dimensional structure of region B in the middle.

[0020] In the diagram: 1. Flange; 2. Motor shaft; 3. Circular screw; 4. First connecting rod; 5. Rotating arm assembly; 6. Second connecting rod; 7. Snap-fit ​​component; 8. Flatness tester; 9. Digit indicator; 10. Detection rod; 11. Detection probe; 12. Positioning slot; 13. Positioning block; 14. First internal thread groove; 15. External thread; 16. Second internal thread groove; 17. Connecting screw; 18. Closing cover; 19. Snap-fit ​​ball; 20. Snap-fit ​​handle; 21. Universal groove; 22. First tensioning handle; 23. Second tensioning handle. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides a technical solution: a dial indicator fixing fixture for motor testing, including a flange 1, a motor shaft 2 movably connected to the center of the flange 1, a circular screw 3 fixedly connected to the upper end of the motor shaft 2, a first connecting rod 4 fixedly connected to the upper end of the circular screw 3, a rotating arm assembly 5 movably connected to one end of the first connecting rod 4, the rotating arm assembly 5 including two rotating arms, the rotating ends of the two rotating arms being connected to each other, a first tensioning handle 22 movably connected to one side surface of the rotating arm assembly 5, the first tensioning handle 22 being movably connected to one side of the connection position of the two rotating arms, the rotation angle between the two rotating arms can be effectively adjusted by the first tensioning handle 22, a second connecting rod 6 movably connected to the other end of the rotating arm assembly 5, and a snap-fit ​​7 fixedly connected to one side surface of the second connecting rod 6.

[0024] One end of the snap-fit ​​component 7 is fixedly connected to a flatness tester 8. A percentage indicator 9 is fixedly connected to one side surface of the flatness tester 8. A test rod 10 is movably connected to the lower end of the flatness tester 8. A test probe 11 is fixedly connected to the lower end of the test rod 10. The lower end of the test probe 11 is attached to the upper end of the edge of the flange 1. The whole assembly drives the flatness tester 8 and the test rod 10 and test probe 11 at the lower end of the flatness tester 8 to move synchronously to detect the flatness of the flange 1 surface. The test data is displayed using the percentage indicator 9. The flatness tester 8 is existing technology and will not be described in detail here.

[0025] A first internal thread groove 14 is provided on one side surface of the motor shaft 2, and an external thread 15 is provided at the lower end of the circular screw 3. The end of the circular screw 3 with the external thread 15 is movably connected to the inside of the first internal thread groove 14. The end of the circular screw 3 with the external thread 15 is adapted to the inside of the first internal thread groove 14. By using the cooperation between the first internal thread groove 14 and the external thread 15, the circular screw 3 can be stably installed on the upper end of the motor shaft 2. When the motor shaft 2 is manually rotated, the circular screw 3 can be driven to rotate synchronously. The outer side of the circular screw 3 is provided with anti-slip texture, which can facilitate the stable connection of the circular screw 3 to the upper end of the motor shaft 2. During the overall use, the circular screw 3 can be replaced according to the specific needs of use to match the different specifications of the shaft end thread hole.

[0026] A second internal thread groove 16 is provided on one side surface of the upper end of the circular screw 3. A connecting screw 17 is fixedly connected to the lower end of the first connecting rod 4. The connecting screw 17 and the second internal thread groove 16 are mutually adapted to each other. A closing cover 18 is fixedly connected to the lower end of the first connecting rod 4. The closing cover 18 is movably connected to the upper end of the circular screw 3. By using the cooperation between the connecting screw 17 and the second internal thread groove 16, the first connecting rod 4 can be stably connected to the upper end of the circular screw 3. While the circular screw 3 rotates with the motor shaft 2, the first connecting rod 4 can drive the component connected to one end of the first connecting rod 4 to rotate synchronously.

[0027] One end of the first connecting rod 4 and the second connecting rod 6 is fixedly connected to a snap-fit ​​ball 19. One end of the two rotating arms of the rotating arm assembly 5 is fixedly connected to a snap-fit ​​handle 20. A universal groove 21 is provided on one side of the snap-fit ​​handle 20. The snap-fit ​​ball 19 and the universal groove 21 are mutually adapted. By using the cooperation between the snap-fit ​​ball 19 and the universal groove 21, the connection between the two rotating arms of the rotating arm assembly 5 and the first connecting rod 4 and the second connecting rod 6 can be effectively adjusted, so as to achieve effective adjustment and stable placement of the overall position. The internal friction between the snap-fit ​​ball 19 and the universal groove 21 allows the snap-fit ​​ball 19 to move and rotate inside the universal groove 21 when under force, and to be placed stably when not under force.

[0028] A positioning slot 12 is provided on one side surface of the snap-fit ​​component 7, and a positioning block 13 is fixedly connected to one side surface of the flatness tester 8. The positioning slot 12 and the positioning block 13 are mutually compatible. By using the cooperation between the positioning slot 12 and the positioning block 13, one end of the flatness tester 8 can be effectively fixedly connected to one end of the snap-fit ​​component 7.

[0029] A second tensioning handle 23 is movably connected to one side surface of the snap-fit ​​component 7. The second tensioning handle 23 is used to adjust the size of the positioning slot 12 opened on one side of the snap-fit ​​component 7, and to control the connection status and position of one end of the snap-fit ​​component 7 and one end of the flatness tester 8.

[0030] Before using the entire device, first screw the circular screw 3 tightly into the first internal thread groove 14 on the motor shaft 2 via the external thread 15 to achieve a stable connection with the motor shaft 2. During the overall use, the circular screw 3 can be replaced according to specific needs to match different specifications of shaft end thread holes. Then, screw the connecting screw 17 of the first connecting rod 4 into the second internal thread groove 16 at the upper end of the circular screw 3, so that the first connecting rod 4 and the circular screw 3 are connected as one unit. The snap-fit ​​ball 19 fixedly connected to the upper end of the first connecting rod 4 is used to lock it into the universal groove 21 opened on one side of the snap-fit ​​handle 20 of one rotating arm in the rotating arm assembly 5. The snap-fit ​​ball 19 fixedly connected to one end of the second connecting rod 6 is used to lock it into the universal groove 21 opened on one side of the snap-fit ​​handle 20 of the other rotating arm in the rotating arm assembly 5. By adjusting the first loosening... The tightening handle 22 allows for flexible adjustment of the included angle between the two rotating arms in the rotating arm assembly 5, thereby changing the position of the second connecting rod 6 and the snap-fit ​​7 connected to the rotating arm. The entire assembly can rotate flexibly at multiple angles when under force, and maintains a stable position through friction when not under force. Through the cooperation between the positioning slot 12 and the positioning block 13, the flatness tester 8 is stably fixed to one end of the snap-fit ​​7. The tightness of the positioning slot 12 is adjusted with the second tightening handle 23 to achieve quick disassembly and assembly and precise positioning of the tester. When the entire assembly is being tested, the motor shaft 2 is manually rotated to drive the circular screw 3 to rotate synchronously. Through the transmission of the first connecting rod 4, the rotating arm assembly 5 and the second connecting rod 6, the test probe 11 moves in a circle along the edge of the flange 1. Finally, the test data is displayed in real time using the percentage indicator 9 to complete the dynamic measurement of the machining accuracy of the flange 1.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dial indicator fixing fixture for motor testing, comprising a flange (1), characterized in that: A motor shaft (2) is movably connected to the center of the flange (1). A circular screw (3) is fixedly connected to the upper end of the motor shaft (2). A first connecting rod (4) is fixedly connected to the upper end of the circular screw (3). A rotating arm assembly (5) is movably connected to one end of the first connecting rod (4). The rotating arm assembly (5) includes two rotating arms, and the rotating ends of the two rotating arms are connected to each other. A first tensioning handle (22) is movably connected to one side of the rotating arm assembly (5). The first tensioning handle (22) is movably connected to one side of the connection position of the two rotating arms. A second connecting rod (6) is movably connected to the other end of the rotating arm assembly (5). A snap-fit ​​piece (7) is fixedly connected to one side of the second connecting rod (6).

2. The dial indicator fixing fixture for motor testing according to claim 1, characterized in that: One end of the snap-fit ​​component (7) is fixedly connected to a flatness tester (8), a percentage indicator (9) is fixedly connected to one side surface of the flatness tester (8), a test rod (10) is movably connected to the lower end of the flatness tester (8), and a test probe (11) is fixedly connected to the lower end of the test rod (10).

3. The dial indicator fixing fixture for motor testing according to claim 2, characterized in that: The motor shaft (2) has a first internal thread groove (14) on one side surface. The lower end of the circular screw (3) is provided with an external thread (15). One end of the circular screw (3) with the external thread (15) is movably connected to the inside of the first internal thread groove (14). The end of the circular screw (3) with the external thread (15) is adapted to the inside of the first internal thread groove (14).

4. A dial indicator fixing fixture for motor testing according to claim 3, characterized in that: The upper end of the circular screw (3) has a second internal thread groove (16) on one side surface. The lower end of the first connecting rod (4) is fixedly connected to a connecting screw (17). The connecting screw (17) and the second internal thread groove (16) are mutually adapted. The lower end of the first connecting rod (4) is fixedly connected to a closing cover (18). The closing cover (18) is movably connected to the upper end of the circular screw (3).

5. A dial indicator fixing fixture for motor testing according to claim 4, characterized in that: One end of the first connecting rod (4) and the second connecting rod (6) is fixedly connected to a snap-fit ​​ball (19). One end of the two rotating arms of the rotating arm assembly (5) is fixedly connected to a snap-fit ​​handle (20). A universal groove (21) is provided on one side of the snap-fit ​​handle (20). The snap-fit ​​ball (19) and the universal groove (21) are mutually compatible.

6. A dial indicator fixing fixture for motor testing according to claim 2, characterized in that: The snap-fit ​​component (7) has a positioning slot (12) on one side surface, and the flatness tester (8) has a positioning block (13) fixedly connected to one side surface. The positioning slot (12) and the positioning block (13) are mutually compatible.

7. A dial indicator fixing fixture for motor testing according to claim 6, characterized in that: A second tensioning handle (23) is movably connected to one side surface of the snap-fit ​​member (7).

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