Crank arm angle detection tool
By designing a fixture suitable for crank arm angle detection, the problem of poor adaptability of traditional detection equipment was solved, enabling fast, simple and accurate crank arm angle detection, and improving detection efficiency and result stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-03
Smart Images
Figure CN223966015U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crank arm detection technology, specifically a crank arm angle detection fixture. Background Technology
[0002] A crank arm is a component in mechanical engineering. Its main function is to change the direction of force or transmit motion.
[0003] Crank arms are typically L-shaped and used to connect two parts. They are usually connected to other parts via hinges and bearings. When one end is subjected to force, the other end will move accordingly. During the production of crank arms, the angle of movement of the crank arm directly affects the operating accuracy of the equipment. Therefore, the angle of the crank arm needs to be detected in real time during the production process.
[0004] Traditional crank arm angle detection fixtures require multiple clamps to fix the fixture to the crank arm during the angle detection process, which involves many steps. In addition, traditional fixtures are usually designed for specific models or sizes of crank arms, and the fixtures need to be changed when the object to be detected needs to be changed, making it difficult to adapt to different models or sizes of crank arms.
[0005] Therefore, this utility model provides a crank arm angle detection fixture. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A crank arm angle detection fixture of this utility model includes a base; a fixed column is fixedly connected to the top of the base; a measuring plate is fixedly connected to the top of the fixed column; a scale is provided at the top edge of the measuring plate; a first support rod is fixedly connected to the top surface of the scale; an adjustment component is installed in the middle of the fixed column; two second support rods are installed in the middle of the adjustment component; a fixing component is installed in the middle of the first and second support rods. Through the above structure, the crank arm can be quickly detected, and the angle of the crank arm can be accurately displayed, making the detection process simpler, reducing repeated adjustments and measurements, adapting to the detection of crank arms at different angles, and reducing the possibility of the crank arm moving or falling off during the detection process, maintaining the stability of the crank arm during detection, thereby increasing detection efficiency and the accuracy of the results.
[0008] Preferably, the adjustment assembly includes a first rotating ring; the first rotating ring is rotatably connected to the middle of the fixed column; a second rotating ring is rotatably connected to the middle of the fixed column; the second rotating ring is disposed on the top of the first rotating ring; a first fixed rod is fixedly connected to the middle of both the first and second rotating rings; a second fixed rod is slidably connected to the middle of the first fixed rod; and the position of the first fixed rod can be defined by bolts and grooves on the surface of the second fixed rod to prevent slippage after the first and second fixed rods have been determined to a certain length; a second support rod is fixedly connected to the end of the second fixed rod; the above structure can fix crank arms of different angles and lengths, is suitable for crank arms of various specifications, improves the versatility of detection, makes the accuracy and consistency of detection data, facilitates subsequent analysis and evaluation, effectively reduces the time for replacing and adjusting equipment, and improves detection efficiency.
[0009] Preferably, the fixing assembly includes multiple connecting rods; the multiple connecting rods are hinged to the middle of the first support rod and the second support rod; the connecting rods are disposed at the ends of the first support rod and the second support rod; the connecting rods are equidistantly distributed; a top plate is fixed to the end of each connecting rod; a spring is fixed to the side wall of the top plate; the end of the spring is fixed to the middle of the first support rod and the second support rod; the above structure can closely fit the middle of the crank arm, reducing movement or shaking of the crank arm during the detection process, effectively improving the accuracy of the detection results, and firmly fixing the crank arm to maintain the stability of the detection process.
[0010] Preferably, a plurality of locking blocks are fixed to the outer wall of the base; the plurality of locking blocks are equidistantly distributed; a protective cover is installed in the middle of the plurality of locking blocks; the protective cover is transparent; the above-mentioned structure of the protective cover can effectively prevent external objects from contacting the internal parts of the protective cover, effectively extend the service life of the internal parts, reduce the impact or scratches on the testing fixture during storage, thereby reducing maintenance and replacement costs.
[0011] Preferably, a sealing groove is fixedly connected to the bottom of the protective cover; a sealing gasket is provided on the top of the base; the sealing gasket is positioned corresponding to the sealing groove; the sealing groove can effectively prevent dust and impurities from entering the interior of the protective cover through the above-mentioned structure, keep the interior of the protective cover clean, reduce the wear caused by dust and impurities adhering to the surface of internal parts, and reduce the frequency of cleaning.
[0012] Preferably, the base has multiple suction cups installed at its bottom; the suction cups are fixed to the bottom of the base; the above structure can effectively increase the stability during the detection process, reduce slippage and shaking during the detection of the crank arm, and reduce the time wasted in adjusting during the detection process.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The crank arm angle detection fixture of this utility model can quickly detect the crank arm and accurately display the angle of the crank arm through the above structure, making the detection process simpler, reducing repeated adjustments and measurements, adapting to the detection of crank arms at different angles, and reducing the movement or detachment of the crank arm during the detection process, maintaining the stability of the crank arm during the detection process, thereby increasing the detection efficiency and the accuracy of the results.
[0015] 2. The crank arm angle detection fixture of this utility model can fix crank arms of different angles and lengths through the above structure, and is applicable to crank arms of various specifications, improving the versatility of detection, making the detection data more accurate and consistent, facilitating subsequent analysis and evaluation, effectively reducing the time for changing and adjusting equipment, and improving detection efficiency. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present invention;
[0018] Figure 2 This is a schematic diagram of the measuring plate in this utility model;
[0019] Figure 3 This is a sectional view of the base in this utility model;
[0020] Figure 4 This is an exploded view of the adjustment component in this utility model;
[0021] Figure 5 This is a structural schematic diagram of the fixing component in this utility model.
[0022] In the diagram: 1. Base; 11. Fixing column; 12. Measuring plate; 13. Scale; 14. First support rod; 15. Second support rod; 2. Adjustment assembly; 21. First rotating ring; 22. Second rotating ring; 23. First fixing rod; 24. Second fixing rod; 3. Fixing assembly; 31. Connecting rod; 32. Spring; 33. Top plate; 4. Locking block; 41. Protective cover; 5. Sealing groove; 51. Sealing gasket; 6. Suction cup; 7. Rubber pad. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0024] like Figures 1 to 5As shown, an embodiment of the present invention provides a crank arm angle detection fixture, comprising a base 1; a fixing column 11 fixedly connected to the top of the base 1; a measuring plate 12 fixedly connected to the top of the fixing column 11; a scale 13 provided at the top edge of the measuring plate 12; a first support rod 14 fixedly connected to the top surface of the scale 13; an adjustment assembly 2 installed in the middle of the fixing column 11; two second support rods 15 installed in the middle of the adjustment assembly 2; and a fixing assembly 3 installed in the middle of the first support rod 14 and the second support rods 15. During operation, the fixing column 11 is fixedly connected to the center of the base 1, and the crank arm is placed on the measuring plate 12, with the first support rod 14 corresponding to the center slot of the crank arm. Then, the position of the second support rod 15 is adjusted by adjusting component 2 so that the second support rod 15 enters the corresponding slots at both ends of the crank arm. The position of the crank arm is fixed in the middle of the first support rod 14 and the second support rod 15 by fixing component 3. The angle of the crank arm is detected by scale 13. The above structure can quickly detect the crank arm and accurately display the angle of the crank arm, making the detection process simpler, reducing repeated adjustments and measurements, adapting to the detection of crank arms at different angles, and reducing the movement or detachment of the crank arm during the detection process, maintaining the stability of the crank arm during the detection process, thereby increasing detection efficiency and the accuracy of the results.
[0025] like Figures 1 to 4 As shown, the adjusting assembly 2 includes a first rotating ring 21; the first rotating ring 21 is rotatably connected to the middle of the fixed column 11; a second rotating ring 22 is rotatably connected to the middle of the fixed column 11; the second rotating ring 22 is disposed on the top of the first rotating ring 21; a first fixing rod 23 is fixedly connected to the middle of both the first rotating ring 21 and the second rotating ring 22; a second fixing rod 24 is slidably connected to the middle of the first fixing rod 23; and the position of the first fixing rod 23 can be defined by bolts and grooves on the surface of the second fixing rod 24 to prevent slippage after the first fixing rod 23 and the second fixing rod 24 have been determined to a certain length; a second support rod 15 is fixedly connected to the end of the second fixing rod 24; during operation, according to At both ends of the crank arm, the two second support rods 15 are rotated, causing the first rotating ring 21 and the second rotating ring 22 to rotate in the middle of the fixed column 11. At the same time, according to the length of the two ends of the crank arm, the second support rods 15 are stretched or contracted outward, causing the second fixed rod 24 to slide in the middle of the first fixed rod 23. This allows the two ends of the crank arm to be placed inside the corresponding second support rods 15, accommodating crank arms of different lengths and angles. The above structure can fix crank arms of different angles and lengths, and is suitable for crank arms of various specifications, improving the versatility of the test, ensuring the accuracy and consistency of the test data, facilitating subsequent analysis and evaluation, effectively reducing the time for changing and adjusting equipment, and improving the test efficiency.
[0026] like Figures 1 to 5As shown, the fixing assembly 3 includes multiple connecting rods 31; the multiple connecting rods 31 are hinged to the middle of the first support rod 14 and the second support rod 15; the connecting rods 31 are located at the ends of the first support rod 14 and the second support rod 15; the connecting rods 31 are evenly distributed; a top plate 33 is fixedly connected to the end of the connecting rod 31; a spring 32 is fixedly connected to the side wall of the top plate 33; the end of the spring 32 is fixedly connected to the middle of the first support rod 14 and the second support rod 15; during operation, when the crank arm slot enters the middle of the second support rod 15, it is guided by the connecting rods 31, so that the middle of the crank arm fits against the top plate 33, the crank arm applies pressure to the top plate 33, causing the spring 32 to elastically contract, and the top plate 33 supports and fixes the crank arm. Through the above structure, the middle of the crank arm can be tightly fitted, so that the crank arm moves or shakes during the detection process, effectively improving the accuracy of the detection results, and can firmly fix the crank arm and maintain the stability of the detection process.
[0027] like Figure 1 and Figure 2 As shown, multiple locking blocks 4 are fixed to the outer wall of the base 1; the multiple locking blocks 4 are equidistantly distributed; a protective cover 41 is installed in the middle of the multiple locking blocks 4; the protective cover 41 is transparent; during operation, after the test is completed, the protective cover 41 is placed on top of the base 1, and the edge of the protective cover 41 applies pressure to the multiple locking blocks 4. The locking blocks 4 are flexible and bend outward under pressure. When the protective cover 41 moves towards the base 1, the multiple locking blocks 4 lock and fix the protective cover 41 in place. The locking blocks 4 protect the middle part of the base 1. Through the above structure, the protective cover 41 can effectively prevent external objects from contacting the internal parts of the protective cover 41, effectively extend the service life of the internal parts, and reduce the external collisions or scratches on the testing fixture during storage, thereby reducing maintenance and replacement costs.
[0028] like Figures 1 to 4 As shown, a sealing groove 5 is fixedly connected to the bottom of the protective cover 41; a sealing gasket 51 is provided on the top of the base 1; the sealing gasket 51 and the sealing groove 5 are positioned correspondingly; during operation, when the protective cover 41 is installed in the middle of the base 1, the sealing groove 5 enters the corresponding sealing gasket 51, and the sealing groove 5 seals the protective cover 41 and the base 1. The sealing groove 5 can effectively prevent dust and impurities from entering the interior of the protective cover 41, keep the interior of the protective cover 41 clean, reduce the wear caused by dust and impurities adhering to the surface of the internal parts, and reduce the frequency of cleaning.
[0029] like Figure 3 As shown, multiple suction cups 6 are installed at the bottom of the base 1; the suction cups 6 are fixed to the bottom of the base 1; during operation, when the crank arm is being inspected, the base 1 is placed on a designated plane and is fixed to the plane by the suction cups 6. The above structure can effectively increase the stability during the inspection process, reduce the sliding and shaking during the crank arm inspection process, and reduce the time wasted in the adjustment process.
[0030] like Figure 4 As shown, a rubber pad 7 is fixed to the side wall of the top plate 33; the rubber pad 7 is fixed to the side away from the spring 32; during operation, when the crank arm is fixed for detection, the rubber pad 7 directly contacts the crank arm. The above structure can reduce the direct contact between the top plate 33 and the crank arm, effectively reducing the friction and wear between the top plate 33 and the crank arm.
[0031] During operation, the fixed column 11 is fixed to the center of the base 1. The crank arm is placed on the measuring plate 12, with the first support rod 14 corresponding to the center slot of the crank arm. The position of the second support rod 15 is then adjusted by the adjusting component 2 so that the second support rod 15 enters the corresponding slots at both ends of the crank arm. The position of the crank arm is fixed in the middle of the first support rod 14 and the second support rod 15 by the fixing component 3. The angle of the crank arm is detected by the scale 13. According to the position of the two ends of the crank arm, the two second support rods 15 are rotated, causing the first rotating ring 21 and the second rotating ring 22 to rotate in the middle of the fixed column 11. At the same time, according to the length of the two ends of the crank arm, the second support rods 15 are stretched or contracted outward, causing the second fixed rod 24 to slide in the middle of the first fixed rod 23, thereby placing the two ends of the crank arm into the corresponding second support rods 15. This accommodates crank arms of different lengths and angles. When the crank arm slot enters the middle of the second support rod 15... During the test, the connecting rod 31 guides the crank arm so that the middle part of the crank arm fits against the top plate 33. The crank arm applies pressure to the top plate 33, causing the spring 32 to elastically contract. The top plate 33 supports and fixes the crank arm. After the test is completed, the protective cover 41 is placed on the top of the base 1. The edge of the protective cover 41 applies pressure to multiple locking blocks 4. The locking blocks 4 are flexible and bend outward under pressure. When the protective cover 41 moves towards the base 1, the multiple locking blocks 4 lock and fix the protective cover 41. The locking blocks 4 protect the middle part of the base 1. When the protective cover 41 is installed in the middle of the base 1, the sealing groove 5 enters the corresponding sealing gasket 51. The sealing groove 5 seals the protective cover 41 and the base 1. During the crank arm test, the base 1 is placed on the designated plane and is attached to the plane by the suction cup 6 to fix the base 1. When the crank arm is fixed for testing, the rubber pad 7 directly contacts the crank arm.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A crank angle detection tool, comprising a base (1); characterized in that: The base (1) top fixed connection has fixed column (11); The fixed column (11) top fixed connection has measuring plate (12); The measuring plate (12) top edge is equipped with scale (13); The scale (13) middle top surface fixed connection has first support rod (14); The fixed column (11) middle installation has adjusting assembly (2); The adjusting assembly (2) middle installation has two second support rods (15); The first support rod (14) and second support rod (15) middle installation has fixed assembly (3).
2. The crank angle detection tool according to claim 1, characterized in that: The adjusting assembly (2) includes first rotating ring (21);The first rotating ring (21) rotationally connected in the middle of the fixed column (11);The fixed column (11) middle rotationally connected with second rotating ring (22);The second rotating ring (22) is arranged on the top of the first rotating ring (21);The first rotating ring (21) and the second rotating ring (22) middle are all fixed with first fixed rod (23);The first fixed rod (23) middle slidingly connected with second fixed rod (24);And the first fixed rod (23) can be limited by the screw and the groove on the surface of the second fixed rod (24);The second support rod (15) is fixed to the end of the second fixed rod (24).
3. The arm angle detection tool of claim 1, wherein: The fixed assembly (3) includes a plurality of connecting rods (31);A plurality of connecting rods (31) are hinged in the middle of the first support rod (14) and the second support rod (15);The connecting rod (31) is arranged at the end of the first support rod (14) and the second support rod (15);The connecting rod (31) is equidistantly distributed;The end of the connecting rod (31) is fixed with the top plate (33);The side wall of the top plate (33) is fixed with the spring (32);The end of the spring (32) is fixed in the middle of the first support rod (14) and the second support rod (15).
4. The arm angle detection tool of claim 1, wherein: The base (1) outside wall is fixed with a plurality of clamping blocks (4);Multiple clamping blocks (4) are equidistantly distributed;Multiple clamping blocks (4) middle installation has protective cover (41);The protective cover (41) is transparent.
5. The wrist angle detection tool of claim 4, wherein: The bottom of the protective cover (41) is fixed with a sealing groove (5);The top of the base (1) is provided with a sealing gasket (51);The sealing gasket (51) and the sealing groove (5) are position corresponding.
6. The arm angle detection tool of claim 1, wherein: The base (1) bottom installation has a plurality of suction cups (6);The suction cup (6) is fixed to the bottom of the base (1).
7. The arm angle detection tool of claim 3, wherein: The side wall of the top plate (33) is fixed with a rubber pad (7);The rubber pad (7) is fixed on the side away from the spring (32).