Centrifugal test device

Abstract

The utility model discloses a centrifugal test device, and relates to the technical field of automobile part experiments, the centrifugal test device comprises a test box, the bottom of the inner cavity of the test box is rotatably connected with a connecting shaft, the centrifugal test device is provided with a weight, a fixed disc and a fixed frame, and the telescopic end of a second electric telescopic rod drives the connecting frame and a clamping block to move downwards; a clamping block drives a weight to move downwards, the weight is screwed off from the outer side of a mounting shaft, then a connecting frame is moved into a storage groove, an output end of a second servo motor drives a fixing disc to rotate, and the weight needing to be used rotates to the position below the mounting shaft. Then the telescopic end of a second electric telescopic rod corresponding to the weight pushes the weight to move upwards, then the output end of a third servo motor drives a fixing frame, a first electric telescopic rod and clamping blocks to move, the two clamping blocks screw the weight on the outer side of an external thread, and therefore the weight can be automatically replaced without manual replacement; and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component tests, in particular to a centrifugal test device. Background Technique

[0002] During the production of car wheels, it is necessary to conduct rotational bending fatigue tests on the wheels. During the test, the testing machine fixes the wheels and applies bending moment to the wheels through the centrifugal force generated by high-speed rotation. According to the car wheel rotational bending fatigue testing machine with the publication number CN219798725U, it adopts the method of keeping the wheel stationary and the load rotating, and applies bending moment to the wheel through the centrifugal loading method by a frequency conversion motor to detect the anti-bending fatigue characteristics of the wheel, which is energy-saving and environment-friendly, is conducive to observing the situation of the wheel during the test, and improves the intuitiveness of the test. However, during the test of this testing machine, it is necessary to manually replace different weights of weights and adjust the rotation speed to achieve the adjustment of the bending moment. The speed of manually replacing the weights is greatly affected by the proficiency of the operator. If the operator is not proficient or makes a wrong operation, it will affect the efficiency of replacing the weights, thereby affecting the test efficiency of the testing machine. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a centrifugal test device, which solves the problems put forward in the above background technique.

[0004] To achieve the above objectives, the utility model is realized through the following technical solutions: A centrifugal test device includes a test box. The bottom of the inner cavity of the test box is rotatably connected with a connecting shaft. The top of the connecting shaft is connected with a rotating shaft. The rotating shaft and the connecting shaft form a main shaft. The top of the rotating shaft extends above the test box and is provided with a vehicle fixing mechanism. The outer side of the main shaft is fixedly connected with a mounting shaft. The outer side of the mounting shaft is provided with an external thread. The outer side of the mounting shaft is threadedly connected with a threaded sleeve through the external thread. The outer side of the threaded sleeve is fixedly connected with a weight. One side of the test box is fixedly connected with a storage box. The inner cavity of the storage box is rotatably connected with a lead screw. The outer side of the lead screw is threadedly connected with a fixing plate. One side of the test box is provided with a side groove. One end of the fixing plate passes through the side groove and extends into the test box. The top of the fixing plate is fixedly connected with a second servo motor. The output end of the second servo motor is fixedly connected with a fixing disk. A plurality of storage grooves are opened on the top of the fixing disk. The bottom of the fixing disk and below the storage grooves are fixedly connected with second electric telescopic rods. The telescopic ends of the second electric telescopic rods all extend into the storage grooves and are fixedly connected with connecting frames. Third servo motors are fixedly connected inside the connecting frames. The output ends of the third servo motors all extend above the connecting frames and are fixedly connected with fixing frames.

[0005] Preferably, both sides of the fixing frame are fixedly connected with first electric telescopic rods. The telescopic ends of the first electric telescopic rods extend to the inner side of the fixing frame and are both fixedly connected with clamping blocks. Positioning blocks are fixedly connected to the inner side of the fixing frame and below the clamping blocks.

[0006] Preferably, one side of the storage box is fixedly connected with a first servo motor. The output end of the first servo motor is fixedly connected with one end of a lead screw. The top of the storage box is hinged with a top cover.

[0007] Preferably, one side of the storage box is fixedly connected with a drive motor. Pulley wheels connected by a belt are fixedly sleeved on the outer sides of the drive motor and the connecting shaft.

[0008] Preferably, third electric telescopic rods are fixedly connected to both sides of the bottom of the inner cavity of the test box and on both sides of the connecting shaft. The telescopic ends of the two third electric telescopic rods are fixedly connected with a support plate. A through groove is formed in the top of the support plate and on the outer side of the connecting shaft. A rail groove is formed in the top of the support plate.

[0009] Preferably, the inner cavity of the rail groove matches the outer side of the mounting shaft. Fourth electric telescopic rods are fixedly connected to both sides of the inner cavity of the test box. The telescopic ends of the fourth electric telescopic rods are both fixedly connected with limiting blocks.

[0010] The utility model provides a centrifugal test device, which has the following beneficial effects:

[0011] 1. For this centrifugal test device, by providing weights, a fixed disk and a fixing frame, the telescopic end of the second electric telescopic rod drives the connecting frame, the third servo motor, the first electric telescopic rod and the clamping block to move downward, so that the clamping block drives the weight to move downward, so that the weight is unscrewed from the outer side of the mounting shaft. Then the connecting frame is moved into the storage groove. Next, the output end of the second servo motor drives the fixed disk to rotate, so that the weight to be used rotates to the lower part of the mounting shaft. Then the telescopic end of the second electric telescopic rod corresponding to this weight pushes the weight upward. Then the output end of the third servo motor drives the fixing frame, the first electric telescopic rod and the clamping block to move, so that the two clamping blocks screw the weight onto the outer side of the external thread, thereby automatically replacing the weights without manual replacement, improving the test efficiency.

[0012] 2. The centrifugal test device is provided with a storage box, a top cover and a fixing plate. After the weights and the threaded sleeves are installed outside the installation shaft, the telescopic end of the first electric telescopic rod drives the clamping block to move back to its original position, so that the clamping block is disengaged from the outer side of the weights. Then, the telescopic end of the second electric telescopic rod drives the connecting frame and the third servo motor to move into the storage groove, so that the connecting frame drives the fixing frame, the first electric telescopic rod, the clamping block and the positioning block to move to the initial position. Then, the output end of the first servo motor drives the lead screw to rotate back to its original position, so that the lead screw drives the fixing plate to drive the second servo motor and the fixed disk to move into the storage box through the side groove. Then, the telescopic end of the third electric telescopic rod pushes the support disk upward, so that the bottom end of the installation shaft is inserted into the rail groove. When it is necessary to replace the weights and the threaded sleeves on the fixing frame, the top cover is opened, and then the telescopic end of the first electric telescopic rod drives the clamping block to move back to its original position. Then, the operator removes the weights from the top of the positioning block, and then places new weights on the top of the positioning block. Then, the telescopic end of the first electric telescopic rod pushes the clamping block to move, so that the two clamping blocks clamp and fix the weights, which is convenient for replacing the threaded sleeves and the weights on the fixing frame. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the internal structure of the present utility model;

[0014] Figure 2 is the present utility model Figure 1 enlarged view of part A;

[0015] Figure 3 is the present utility model Figure 1 enlarged view of part B.

[0016] In the figure: 1. Test box; 2. Connecting shaft; 3. Driving motor; 4. Pulley; 6. Rotating shaft; 7. Main shaft; 8. Installation shaft; 9. External thread; 10. Threaded sleeve; 11. Weight; 12. Vehicle fixing mechanism; 13. Storage box; 14. First servo motor; 15. Lead screw; 16. Side groove; 17. Fixing plate; 18. Second servo motor; 19. Fixed disk; 20. Storage groove; 21. Connecting frame; 22. Third servo motor; 23. Fixing frame; 24. First electric telescopic rod; 25. Clamping block; 26. Positioning block; 27. Second electric telescopic rod; 28. Third electric telescopic rod; 29. Support disk; 30. Through groove; 31. Rail groove; 32. Top cover; 33. Fourth electric telescopic rod; 34. Limiting block. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0018] Embodiment 1

[0019] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a centrifugal test device, including a test chamber 1, a connecting shaft 2 is rotatably connected to the bottom of the inner cavity of the test chamber 1, the top of the connecting shaft 2 is connected to a rotating shaft 6, the rotating shaft 6 and the connecting shaft 2 form a main shaft 7, the top of the rotating shaft 6 extends above the test chamber 1 and is provided with a vehicle fixing mechanism 12, an installation shaft 8 is fixedly connected to the outside of the main shaft 7, an external thread 9 is provided on the outside of the installation shaft 8, a threaded sleeve 10 is threadedly connected to the outside of the installation shaft 8 through the external thread 9, a weight 11 is fixedly connected to the outside of the threaded sleeve 10, a storage box 13 is fixedly connected to one side of the test chamber 1, a lead screw 15 is rotatably connected to the inner cavity of the storage box 13, a fixing plate 17 is threadedly connected to the outside of the lead screw 15, a side groove 16 is provided on one side of the test chamber 1, one end of the fixing plate 17 passes through the side groove 16 and extends into the test chamber 1, a second servo motor 18 is fixedly connected to the top of the fixing plate 17, an output end of the second servo motor 18 is fixedly connected to a fixing disk 19, a plurality of storage grooves 20 are provided on the top of the fixing disk 19, second electric telescopic rods 27 are fixedly connected to the bottom of the fixing disk 19 and below the storage grooves 20, telescopic ends of the second electric telescopic rods 27 all extend into the storage grooves 20 and are fixedly connected to connecting frames 21, third servo motors 22 are fixedly connected to the inside of the connecting frames 21, and output ends of the third servo motors 22 all extend above the connecting frames 21 and are fixedly connected to fixing frames 23.

[0020] On both sides of the fixing frame 23, there are fixedly connected first electric telescopic rods 24. The telescopic ends of the first electric telescopic rods 24 all extend to the inner side of the fixing frame 23 and are all fixedly connected with clamping blocks 25. On the inner side of the fixing frame 23 and below the clamping blocks 25, there are fixedly connected positioning blocks 26. The weights 11 can be limited and supported by the positioning blocks 26. One side of the storage box 13 is fixedly connected with a first servo motor 14. The output end of the first servo motor 14 is fixedly connected with one end of a lead screw 15. The top of the storage box 13 is hinged with a top cover 32. When it is necessary to replace the weights 11 on the fixing frame 23, the top cover 32 is opened. Then, the telescopic ends of the first electric telescopic rods 24 drive the clamping blocks 25 to move back. Then, the operator removes the weights 11 from the tops of the positioning blocks 26. Then, new weights 11 are placed on the tops of the positioning blocks 26. Then, the telescopic ends of the first electric telescopic rods 24 push the clamping blocks 25 to move, so that the two clamping blocks 25 clamp and fix the weights 11. One side of the storage box 13 is fixedly connected with a driving motor 3. Both the driving motor 3 and the outer side of the connecting shaft 2 are fixedly sleeved with belt pulleys 4 connected by belt drive. The output end of the driving motor 3 can drive the belt pulley 4 to drive the connecting shaft 2 to rotate. On the bottom of the inner cavity of the test chamber 1 and on both sides of the connecting shaft 2, there are fixedly connected third electric telescopic rods 28. The telescopic ends of the two third electric telescopic rods 28 are fixedly connected with a support disk 29. A through groove 30 is formed on the top of the support disk 29 and outside the connecting shaft 2. A rail groove 31 is formed on the top of the support disk 29. When the device is working, the mounting shaft 8 rotates, so that the bottom end of the mounting shaft 8 rotates along the inside of the rail groove 31.

[0021] Embodiment 2

[0022] Please refer to Figure 1 , the present utility model provides a technical solution: The inner cavity of the rail groove 31 matches the outer side of the mounting shaft 8. On both sides of the inner cavity of the test chamber 1, there are fixedly connected fourth electric telescopic rods 33. The telescopic ends of the fourth electric telescopic rods 33 are all fixedly connected with limit blocks 34. The main shaft 7 can be limited by the limit blocks 34, so as to facilitate the replacement of the threaded sleeve 10 and the weights 11 on the mounting shaft 8.

[0023] In summary, when the centrifugal test device is in use, the motor vehicle is connected to the main shaft 7 through the vehicle fixing mechanism 12. Then, the output end of the driving motor 3 drives the connecting shaft 2 to rotate through the pulley 4, so that the connecting shaft 2 drives the rotating shaft 6, the main shaft 7 and the vehicle to rotate. The rotation of the main shaft 7 drives the weight 11 to rotate through the mounting shaft 8, so that the centrifugal force generated by the high-speed rotation of the weight 11 realizes the bending moment loading on the wheel. When it is necessary to replace the weights 11 of different weights, the telescopic end of the fourth electric telescopic rod 33 pushes the limiting block 34 to move, clamps the main shaft 7, and then the telescopic end of the third electric telescopic rod 28 drives the support plate 29 to move downward. Then, the output end of the first servo motor 14 drives the lead screw 15 to rotate, so that the lead screw 15 drives the fixing plate 17 to move, so that the fixing plate 17 drives the second servo motor 18, the fixing disk 19 and the fixing frame 23 to move into the test chamber 1. Then, the telescopic end of the second electric telescopic rod 27 pushes the fixing frame 23 to move upward. Then, the telescopic end of the first electric telescopic rod 24 pushes the clamping block 25 to contact the outer side of the weight 11 outside the mounting shaft 8. Then, the output end of the third servo motor 22 drives the fixing frame 23, the clamping block 25 and the weight 11 to rotate. At the same time, the telescopic end of the second electric telescopic rod 27 drives the connecting frame 21, the third servo motor 22, the first electric telescopic rod 24 and the clamping block 25 to move downward, so that the clamping block 25 drives the weight 11 to move downward, so that the weight 11 is unscrewed from the outside of the mounting shaft 8. Then, the connecting frame 21 is moved into the storage groove 20. Then, the output end of the second servo motor 18 drives the fixing disk 19 to rotate, so that the weight 11 to be used rotates to the lower side of the mounting shaft 8. Then, the telescopic end of the second electric telescopic rod 27 corresponding to this weight 11 pushes the weight 11 to move upward. Then, the output end of the third servo motor 22 drives the fixing frame 23, the first electric telescopic rod 24 and the clamping block 25 to move, so that the two clamping blocks 25 screw the weight 11 onto the outside of the external thread 9. Then, the telescopic end of the first electric telescopic rod 24 drives the clamping block 25 to move back to its original position, so that the clamping block 25 is separated from the outer side of the weight 11. Then, the telescopic end of the second electric telescopic rod 27 drives the connecting frame 21 and the third servo motor 22 to move into the storage groove 20, so that the connecting frame 21 drives the fixing frame 23, the first electric telescopic rod 24, the clamping block 25 and the positioning block 26 to move to the initial position. Then, the output end of the first servo motor 14 drives the lead screw 15 to rotate back to its original position, so that the lead screw 15 drives the fixing plate 17 to drive the second servo motor 18 and the fixing disk 19 to move into the storage box 13 through the side groove 16. Then, the telescopic end of the third electric telescopic rod 28 pushes the support plate 29 to move upward, so that the bottom end of the mounting shaft 8 is inserted into the rail groove 31.

[0024] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A centrifugal test device, comprising a test box (1), characterized in that: The bottom of the inner cavity of the test box (1) is rotatably connected to a connecting shaft (2), the top of the connecting shaft (2) is connected to a rotating shaft (6), the rotating shaft (6) and the connecting shaft (2) form a main shaft (7), the top of the rotating shaft (6) extends to the top of the test box (1) and is provided with a vehicle fixing mechanism (12), the outer side of the main shaft (7) is fixedly connected to a mounting shaft (8), the outer side of the mounting shaft (8) is provided with an external thread (9), the outer side of the mounting shaft (8) is threadedly connected to a threaded sleeve (10) through the external thread (9), the outer side of the threaded sleeve (10) is fixedly connected to a weight (11), one side of the test box (1) is fixedly connected to a storage box (13), the inner cavity of the storage box (13) is rotatably connected to a screw rod (15), the outer side of the screw rod (15) is threadedly connected to a fixing plate (17), one side of the test box (1) A side groove (16) is opened on the side, one end of the fixing plate (17) passes through the side groove (16) and extends into the interior of the test box (1), a second servo motor (18) is fixedly connected to the top of the fixing plate (17), the output end of the second servo motor (18) is fixedly connected to a fixing plate (19), a plurality of storage grooves (20) are opened on the top of the fixing plate (19), a second electric telescopic rod (27) is fixedly connected to the bottom of the fixing plate (19) and below the storage grooves (20), the telescopic ends of the second electric telescopic rod (27) extend into the interior of the storage grooves (20) and are fixedly connected to a connecting frame (21), a third servo motor (22) is fixedly connected to the interior of the connecting frame (21), the output ends of the third servo motor (22) extend to the top of the connecting frame (21) and are fixedly connected to a fixing frame (23).

2. A centrifugal test device according to claim 1, characterized in that: Both sides of the fixing frame (23) are fixedly connected to first electric telescopic rods (24); telescopic ends of the first electric telescopic rods (24) extend to the inner side of the fixing frame (23) and are fixedly connected to clamping blocks (25); and positioning blocks (26) are fixedly connected to the inner side of the fixing frame (23) and below the clamping blocks (25).

3. A centrifugal test device according to claim 1, characterized in that: A first servo motor (14) is fixedly connected to one side of the storage box (13); an output end of the first servo motor (14) is fixedly connected to one end of a screw rod (15); and a top cover (32) is hingedly connected to the top of the storage box (13).

4. A centrifugal test device according to claim 1, characterized in that: A drive motor (3) is fixedly connected to one side of the storage box (13), and a pulley (4) connected via a belt drive is fixedly sleeved on the outer side of the drive motor (3) and the connecting shaft (2).

5. A centrifugal test device according to claim 1, characterized in that: A third electric telescopic rod (28) is fixedly connected to the bottom of the inner cavity of the test box (1) and located on both sides of the connecting shaft (2); the telescopic ends of the two third electric telescopic rods (28) are fixedly connected to a support plate (29); a through groove (30) is provided at the top of the support plate (29) and located on the outside of the connecting shaft (2); and a rail groove (31) is provided at the top of the support plate (29).

6. A centrifugal test device according to claim 5, characterized in that: The inner cavity of the rail groove (31) matches the outer side of the installation shaft (8), and fourth electric telescopic rods (33) are fixedly connected to both sides of the inner cavity of the test box (1), and the telescopic ends of the fourth electric telescopic rods (33) are fixedly connected to limit blocks (34).

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