Rotational performance tester for bearings

Abstract

The utility model discloses a rotation performance testing machine for bearing relates to bearing test technical field, and it is including: support seat, the inside of support seat is provided with recess, the inside rotation of recess has first rotating seat, the inside of first rotating seat is provided with inner groove, and the inside rotation of inner groove has second rotating seat, the both sides of first rotating seat top are all fixed with fixed plate. The utility model through two air -pumping pumps will gas respectively draw into four air bags, and air bag fills air after will push connecting strip movement and will spring stretch, and the connecting strip of bearing outer ring is clamped in the outer ring of bearing, and will press the suction disc connected with it and make it suck in bearing outer wall, and the connecting strip of bearing inner ring is supported in bearing inner wall, and will press the suction disc and make it suck in bearing inner wall, and the stability of being clamped of bearing during rotation test is increased by the suction disc, avoids the phenomenon of skidding when bearing rotates and influences the accuracy and reliability of overall test data.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, and specifically to a machine for testing the rotational performance of bearings. Background Technology

[0002] Bearings are one of the most important components in machinery. They are mainly used to support and guide rotating or moving parts, reduce friction and improve efficiency. Bearings are widely used in various mechanical equipment and transportation vehicles, such as automobiles, airplanes, industrial machinery and household appliances. In order to ensure the quality and reliability of bearings, it is necessary to test the rotational performance of bearings. The test can determine the bearing capacity under different load and speed conditions, and ensure that it operates normally under the corresponding working conditions.

[0003] Existing bearing rotation performance testing machines rely on clamping arms or clamping bars to hold the inner and outer surfaces of the bearing during rotation testing. Since the inner and outer surfaces of the bearing are relatively smooth, if the clamping force applied by the clamping arms is insufficient, the bearing may not be firmly fixed during rotation, resulting in slippage. Slippage will cause the actual data of speed and load to differ from the measured values, affecting the accuracy and reliability of the overall test data. Summary of the Invention

[0004] The purpose of this invention is to provide a bearing rotation performance testing machine, which solves the problem that if the clamping force applied by the clamping arm is insufficient in the existing bearing rotation performance testing machine, the bearing may not be firmly fixed during rotation, resulting in slippage and affecting the accuracy and reliability of the overall test data.

[0005] This utility model solves the above-mentioned technical problems through the following technical solution: This utility model includes: A support base, wherein a groove is provided inside the support base, and a first rotating seat is rotatably disposed inside the groove. The first rotating seat is provided with an inner groove, and a second rotating seat is rotatably disposed inside the inner groove. A fixing plate is fixed on both sides above the first rotating seat, a hollow plate is fixed on the top of the second rotating seat, an airbag is fixed on one side of the two fixing plates and both sides of the hollow plate, a connecting strip is fixed on one side of the four airbags, and multiple suction cups are fixed on one side of the four connecting strips. Both the first rotating seat and the second rotating seat have air pumps fixed inside. The air inlet of one of the air pumps is connected to the hollow plate through a connecting pipe, and the air inlet of the other air pump is fixedly connected to the two fixed plates through a double pipe joint.

[0006] Preferably, the first rotating seat has a first flow channel inside, and the second rotating seat has a second flow channel inside.

[0007] Preferably, a first motor is fixed below the support base, one end of the output shaft of the first motor is fixed below the first rotating base, and a second motor is fixed inside the inner groove, one end of the output shaft of the second motor is fixed below the second rotating base.

[0008] Preferably, two mounting slots are provided above the first rotating seat and the second rotating seat, and springs are fixed inside the four mounting slots.

[0009] Preferably, one end of each of the four springs is fixed to one side of the four connecting strips.

[0010] Preferably, a corrugated folding plate is fixed to one side of each of the four connecting strips, and the four corrugated folding plates are respectively fixedly connected to the lower part of the four airbags.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Two vacuum pumps draw gas into four air bags. Once inflated, the air bags push the connecting strips to move and stretch the springs. The connecting strip on the outer ring of the bearing is clamped onto the outer ring, and the suction cup connected to it is pressed to adhere to the outer wall of the bearing. The connecting strip on the inner ring of the bearing is supported on the inner wall, and the suction cup is pressed to adhere to the inner wall of the bearing. The suction cups increase the stability of the bearing during rotation testing, preventing slippage that could affect the accuracy and reliability of the overall test data. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.

[0013] Figure 4 This is a side sectional view of the present invention.

[0014] The numbers in the image represent: 1. Support base; 2. Groove; 3. First rotating seat; 4. Inner groove; 5. Second rotating seat; 6. Fixing plate; 7. Hollow plate; 8. Airbag; 9. Connecting strip; 10. Suction cup; 11. Air pump; 12. First flow channel; 13. Second flow channel; 14. First motor; 15. Second motor; 16. Mounting groove; 17. Spring; 18. Corrugated folding plate. Detailed Implementation

[0015] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0016] This embodiment provides a technical solution: a machine for testing the rotational performance of bearings, such as... Figure 1-4 As shown, the device includes a support base 1, a groove 2 inside the support base 1, a first rotating seat 3 rotating inside the groove 2, a first motor 14 fixed below the support base 1, one end of the output shaft of the first motor 14 fixed below the first rotating seat 3, an inner groove 4 inside the first rotating seat 3, a second rotating seat 5 rotating inside the inner groove 4, a second motor 15 fixed inside the inner groove 4, and one end of the output shaft of the second motor 15 fixed below the second rotating seat 5.

[0017] Fixed plates 6 are fixed on both sides above the first rotating seat 3, and a hollow plate 7 is fixed on the top of the second rotating seat 5. Air passageways for air circulation are provided inside both fixed plates 6 and the hollow plate 7. Airbags 8 are fixed to one side of each of the two fixed plates 6 and both sides of the hollow plate 7. Connecting strips 9 are fixed to one side of each of the four airbags 8, and multiple suction cups 10 are fixed to one side of each of the four connecting strips 9. The suction cups 10 adhere to the inner and outer walls of the bearing, increasing clamping friction and preventing the first rotating seat 3 and the second rotating seat 5 from rotating. When the bearing slips during operation, it cannot rotate. Two mounting slots 16 are provided above the first rotating seat 3 and the second rotating seat 5. Springs 17 are fixed inside the four mounting slots 16. One end of each of the four springs 17 is fixed to one side of the four connecting strips 9 to help the connecting strips 9 return to their original position. Corrugated folding plates 18 are fixed to one side of each of the four connecting strips 9. The four corrugated folding plates 18 are fixedly connected to the bottom of the four airbags 8 to prevent the airbags 8 from piling up and falling into the mounting slots 16 when deflated, thus affecting the return of the connecting strips 9.

[0018] Both the first rotating seat 3 and the second rotating seat 5 are equipped with air pumps 11. The air pumps 11 have a bidirectional function. When air needs to be released, they can be switched to exhaust mode to control the release of gas in the airbag 8. The air inlet of one air pump 11 is connected to the through slot of the hollow plate 7 through a connecting pipe, and the air inlet of the other air pump 11 is connected to the through slot of the two fixed plates 6 through a double pipe connector. The first rotating seat 3 has a first flow channel 12 that is connected to the air outlet of one of the air pumps 11, and the second rotating seat 5 has a second flow channel 13 that is connected to the air outlet of the other air pump 11.

[0019] In use, the bearing is placed on the support seat 1, with the inner ring of the bearing fitted over the outer side of the connecting strips 9 on the two second rotating seats 5, and the outer ring of the bearing placed between the two connecting strips 9 on the first rotating seat 3. The two vacuum pumps 11 are started to draw gas into the four air bags 8 through the first flow channel 12 and the second flow channel 13 respectively. After the air bags 8 are inflated, they will push the connecting strips 9 to move and stretch the spring 17. The connecting strip 9 on the outer ring of the bearing is clamped on the outer ring of the bearing, and the suction cup 10 connected to it is attached to the outer wall of the bearing. The connecting strip on the inner ring of the bearing is supported on the inner wall of the bearing, and the suction cup 10 connected to it is attached to the inner wall of the bearing. The suction cup 10 is used to increase the stability of the bearing being clamped, so as to avoid the bearing slipping at the clamping point when the first rotating seat 3 and the second rotating seat 5 rotate, which would affect the test. After the test is completed, the exhaust mode of the vacuum pump 11 is changed to release the gas in the air bags 8. Under the reset of the spring 17, the connecting strip 9 will drive the suction cup 10 to release the clamping and positioning of the bearing.

[0020] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A test machine for the rotational performance of bearings, characterized in that, include: Support base (1), the support base (1) has a groove (2) inside, a first rotating seat (3) is rotatably arranged inside the groove (2), the first rotating seat (3) has an inner groove (4) inside, and a second rotating seat (5) is rotatably arranged inside the inner groove (4). Fixing plates (6) are fixed on both sides above the first rotating seat (3), and a hollow plate (7) is fixed above the second rotating seat (5). Airbags (8) are fixed on one side of the two fixing plates (6) and on both sides of the hollow plate (7). Connecting strips (9) are fixed on one side of the four airbags (8), and multiple suction cups (10) are fixed on one side of the four connecting strips (9). Both the first rotating seat (3) and the second rotating seat (5) are equipped with air pumps (11). The air inlet of one of the air pumps (11) is connected to the hollow plate (7) through a connecting pipe, and the air inlet of the other air pump (11) is fixedly connected to two fixed plates (6) through a double pipe joint.

2. The bearing rotation performance testing machine as described in claim 1, characterized in that, The first rotating seat (3) has a first flow channel (12) inside, and the second rotating seat (5) has a second flow channel (13) inside.

3. The bearing rotation performance testing machine as described in claim 2, characterized in that, A first motor (14) is fixed below the support base (1), and one end of the output shaft of the first motor (14) is fixed below the first rotating base (3). A second motor (15) is fixed inside the inner groove (4), and one end of the output shaft of the second motor (15) is fixed below the second rotating base (5).

4. The bearing rotation performance testing machine as described in claim 3, characterized in that, Two mounting slots (16) are provided above the first rotating seat (3) and above the second rotating seat (5), and springs (17) are fixed inside the four mounting slots (16).

5. The bearing rotation performance testing machine as described in claim 4, characterized in that, One end of each of the four springs (17) is fixed to one side of each of the four connecting bars (9).

6. The bearing rotation performance testing machine as described in claim 1, characterized in that, Corrugated folding plates (18) are fixed to one side of each of the four connecting strips (9), and the four corrugated folding plates (18) are respectively fixedly connected to the bottom of the four airbags (8).

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