Flexible connection device for testing small bearing

Abstract

The utility model provides a flexible connecting device for testing a small bearing. The flexible connecting device is characterized in that a driven shaft is arranged on one side of a connecting end of a driving shaft; the side, close to the driving shaft, of the driven shaft is sleeved with the driven shaft connecting sleeve. One side of the connecting end of the driving shaft is sleeved with the driving shaft connecting sleeve, and the side, close to the driven shaft, of the driving shaft connecting sleeve is clamped in the driven shaft connecting sleeve; and the rubber cylinder is clamped between the driven shaft connecting sleeve and the driving shaft connecting sleeve. Compared with rigid connection transmission, the transmission is more stable; after the tested bearing loses efficacy and is stuck, the driving shaft still keeps rotating, and the driven shaft is disconnected to drive the driving shaft to rotate while the rubber cylinder is instantly damaged, so that the situation that the motor cannot rotate due to the stuck bearing and is damaged due to current overload is avoided; and when the tested bearing fails and is stuck, the operation of the detection device can be recovered only by filling the rubber cylinder between the driven shaft connecting sleeve and the driving shaft connecting sleeve subsequently, and the connecting device can be repeatedly used and is low in maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing detection field especially is related to the technical field of testing fixture connection, and specifically relates to a flexible connecting device for testing small bearing. BACKGROUND

[0002] Small bearings are generally light load and high speed in use, so light load and high speed test conditions are adopted when tested by a bearing tester. In conventional bearing testing, a corresponding size driven shaft is selected according to the inner diameter of the bearing, and the bearing is fitted on the driven shaft. The driven shaft needs to be rotated by a driving shaft, and the driving shaft can control its rotation by a motor. Therefore, a square hole is arranged on one side of the driven shaft, and a square shaft is arranged on one side of the driving shaft. The two are embedded in each other to achieve transmission.

[0003] However, since the bearing to be detected is small in size, the outer diameter of the fitted driven shaft also decreases. If the above connection method is still used, the outer diameter of the square shaft and the inner diameter of the square hole will decrease due to the limited connection space. The precision required for processing the small-sized square shaft and square hole will be higher, and the processing cost will double as the precision increases. If the precision of the square shaft and the square hole is poor, there will be a large gap between the square hole and the square shaft after assembly, which will cause rapid wear of the square hole and the square shaft during high-speed rotation, resulting in abnormal noise and causing the tester to stop working.

[0004] Abnormal stoppage will mislead the test data and test results, and the test results cannot provide effective basis for performance. The driven shaft and the driven shaft connected by the square hole and the square shaft are both metal, and the connection between the driven shaft and the driven shaft is rigid. If the driving bearing is a defective part, the driving bearing will fail during high-speed rotation detection, causing the motor connected to the driven shaft to be overloaded and causing damage to the motor. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a flexible connecting device for testing small bearings to solve the difficulties of the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a flexible connecting device for testing small bearings, comprising:

[0007] A driving shaft 1 is provided with a pin hole in the middle of one side of the connection end, and a metal pin 12 is arranged in the pin hole. A driven shaft 2 is arranged on one side of the connection end of the driving shaft 1.

[0008] A driven shaft connecting sleeve 3 is fitted on one side of the driven shaft 2 close to the driving shaft 1.

[0009] Driving axle connecting sleeve 4, the driving axle connecting sleeve 4 is sleeved on the connecting end side of driving axle 1, and the driving axle connecting sleeve 4 is clamped in the driven axle connecting sleeve 3 on the side close to driven axle 2;

[0010] Rubber cylinder 7, the rubber cylinder 7 is clamped between driven axle connecting sleeve 3 and driving axle connecting sleeve 4.

[0011] According to the preferred embodiment, the driven axle connecting sleeve 3 is provided with a driven axle connecting groove 31 on the side close to the driven axle 2, and is provided with a driving side mounting groove 32 on the side close to the driving axle 1, the driven axle connecting groove 31 and the driving side mounting groove 32 are not communicated, and the inner side wall of the driven axle connecting groove 31 is attached to the outer side wall of the driven axle 2.

[0012] According to the preferred embodiment, a threaded hole is formed in the side wall of the driven axle connecting groove 31, a fastening screw 33 is arranged in the threaded hole, and the bottom of the fastening screw 33 passes through the threaded hole and abuts against the outer side wall of the driven axle 2 in the driven axle connecting groove 31.

[0013] According to the preferred embodiment, the driving axle connecting sleeve 4 is provided with a driving axle connecting groove 41 in the middle, and the side of the driving axle connecting groove 41 is attached to the outer side wall of the driving axle 1.

[0014] According to the preferred embodiment, a pair of U-shaped grooves are symmetrically formed on the left and right sides of the driving axle connecting sleeve 4 away from the driven axle connecting sleeve 3, the bottom of the connecting hole is communicated with the driving axle connecting groove 41, and the middle segment of the metal pin 12 is clamped in the U-shaped groove by passing through the left and right side segments of the driving axle 1.

[0015] According to the preferred embodiment, there is a gap 5 between the outer side wall of the driving axle connecting sleeve 4 and the inner side wall of the driving side mounting groove 32, and a circular arc groove 6 is formed on the outer side wall of the driving axle connecting sleeve 4 and the inner side wall of the driving side mounting groove 32 at equal intervals.

[0016] According to the preferred embodiment, a plurality of rubber cylinders 7 are provided, and the rubber cylinders 7 are clamped in the gap 5 at equal intervals, and the left and right sides of the rubber cylinders 7 are positioned by the circular arc grooves 6.

[0017] According to the preferred embodiment, the connecting end of the driving axle 1 is not in contact with the driven axle 2.

[0018] The utility model discloses a driven axle connecting sleeve, driving axle connecting sleeve, rubber cylinder, and designs the connecting relationship between the driving axle and driven axle as soft connection, which has the following beneficial effects:

[0019] (1) reduce the shaking, and the transmission of rigid connection is more stable;

[0020] (2) When the bearing of the test fails and is stuck, the driving shaft still rotates, the rubber cylinder is broken instantaneously, and the driven shaft is disconnected to drive the driving shaft to rotate, thereby avoiding the situation that the motor cannot rotate due to bearing sticking, resulting in current overload and damage;

[0021] (3) When the bearing of the test fails and is stuck, the rubber cylinder is filled between the driven shaft connecting sleeve and the driving shaft connecting sleeve to restore the operation of the detection device, and the connecting device can be repeatedly used, thereby reducing the maintenance cost.

[0022] Hereinafter, the optimal embodiments for implementing the present application will be described in more detail with reference to the accompanying drawings, so that the features and advantages of the present application can be easily understood. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The present application is shown as a structural schematic diagram;

[0024] Figure 2 The present application is shown as an enlarged schematic diagram of the driven shaft connecting sleeve and the driving shaft connecting sleeve;

[0025] Figure 3 The present application is shown as Figure 1 K view of the K mark;

[0026] MARK DESCRIPTION

[0027] 1, driving shaft; 12, metal pin;

[0028] 2, driven shaft;

[0029] 3, driven shaft connecting sleeve; 31, driven shaft connecting groove; 32, driving side mounting groove; 33, fastening screw;

[0030] 4, driving shaft connecting sleeve; 41, driving shaft connecting groove;

[0031] 5, gap; 6, circular arc groove; 7, rubber cylinder; DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the present application embodiment will be described clearly and completely in the following with reference to the drawings of the present application specific embodiment. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] Compared with the embodiments shown in the drawings, the feasible implementation solutions within the protection scope of the present application can have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings can be implemented in a single component, or a single component shown in the drawings can be implemented as a plurality of separate components.

[0034] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the common meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first", "second", and similar terms used in the description and claims of the present application do not necessarily mean any order, number, or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" do not necessarily mean a quantity limit. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0035] The utility model provides a flexible connecting device of test small -size bearing, for bearing craft, the utility model does not make the specific type of bearing of required detection limit, but this driven shaft connecting sleeve 3, drive shaft connecting sleeve 4, rubber cylinder 7 structure is especially suitable for the driving of bearing in bearing detection.

[0036] Generally, the flexible connecting device of test small -size bearing proposed by the utility model mainly includes: driven shaft connecting sleeve 3, drive shaft connecting sleeve 4 and rubber cylinder 7, wherein, can see Figure 1 It shows the arrangement relationship of drive shaft 1, driven shaft 2, driven shaft connecting sleeve 3, drive shaft connecting sleeve 4 and rubber cylinder 7.

[0037] Generally, the installation process of the flexible connecting device of test small -size bearing proposed by the utility model includes:

[0038] 1, metal pin 12 is loaded into the drive shaft 1 connecting end pin hole;

[0039] 2, driven shaft connecting sleeve 3 and drive shaft connecting sleeve 4 are sleeved on the side of driven shaft 2 and drive shaft 1 close to each other;

[0040] 3, manually rotate drive shaft connecting sleeve 4 to make metal pin 12 embedded in U-shaped groove;

[0041] 4, manually rotate the driven shaft connecting sleeve 3, make the drive shaft connecting sleeve 4 arc groove 6 align with the driven shaft connecting sleeve arc groove 6;

[0042] 5, insert rubber cylinder 7 in the arc groove 6;

[0043] 6, install fastening screw 33 to lock between the driven shaft 2 and the driven shaft connecting sleeve 3.

[0044] In the actual test process, because the connection between the drive shaft 1 and the driven shaft 2 is designed as a soft connection through the driven shaft connecting sleeve 3, the drive shaft connecting sleeve 4 and the rubber cylinder 7, this design can first reduce the swing in the transmission process, and is more stable than rigid connection transmission. Secondly, after the bearing failure of the test, the drive shaft 1 still rotates, the rubber cylinder 7 will be damaged at the same time, and the driven shaft 2 will drive the drive shaft 1 to rotate, which can avoid the situation that the motor cannot rotate because the bearing is stuck, resulting in current overload and damage. Finally, when the bearing of the test fails, the subsequent only needs to fill the rubber cylinder 7 between the driven shaft connecting sleeve 3 and the drive shaft connecting sleeve 4 to restore the operation of the detection device. This connecting device can be reused, and the maintenance cost is low.

[0045] The utility model discloses a flexible connecting device of test small -size bearing includes: drive shaft 1, driven shaft 2, driven shaft connecting sleeve 3, drive shaft connecting sleeve 4 and rubber cylinder 7, wherein drive shaft 1 connects the side of one end and set up the pin hole in the middle, the pin hole is equipped with the metal pin 12, and the one side of the connecting end of drive shaft 1 is provided with driven shaft 2, and the connecting end of drive shaft 1 is not contacted between driven shaft 2, and driven shaft connecting sleeve 3 is sleeved on the side of driven shaft 2 close to drive shaft 1, and the side of driven shaft connecting sleeve 3 close to driven shaft 2 is provided with driven shaft connecting groove 31, and the side of driven shaft connecting sleeve 3 close to drive shaft 1 is provided with drive side mounting groove 32, and driven shaft connecting groove 31 and drive side mounting groove 32 are not communicated, and the inner side wall of driven shaft connecting groove 31 is attached to the outer side wall of driven shaft 2, and the side wall on driven shaft connecting groove 31 is equipped with the threaded hole, and the threaded hole is equipped with fastening screw 33, and the bottom of fastening screw 33 passes through the threaded hole and enters driven shaft connecting groove 31 and is arranged on the outer side wall of driven shaft 2, drive shaft connecting sleeve 4 is sleeved on the connecting end one side of drive shaft 1, and drive shaft connecting sleeve 4 is clamped in driven shaft connecting sleeve 3 on the side close to driven shaft 2 of drive shaft connecting sleeve 4, and a pair of U-shaped grooves are symmetrically set up on the left and right sides of drive shaft connecting sleeve 4 away from driven shaft connecting sleeve 3, and the bottom of connecting hole is communicated with drive shaft connecting groove 41, and the middle section of metal pin 12 passes through the left and right sides of drive shaft 1 and is clamped in U-shaped groove, and there is gap 5 between the outer side wall of drive shaft connecting sleeve 4 and the inner side wall of drive side mounting groove 32, and arc groove 6 is set up on the outer side wall of drive shaft connecting sleeve 4 and the inner side wall of drive side mounting groove 32 at equal intervals, rubber cylinder 7 is clamped between driven shaft connecting sleeve 3 and drive shaft connecting sleeve 4, rubber cylinder 7 is provided with several, and several rubber cylinders 7 are clamped in gap 5 at equal intervals, and the left and right sides of rubber cylinder 7 are positioned through arc groove 6.

[0046] The above examples only illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A flexible coupling device for testing small bearings, characterized in that, It includes: Drive shaft (1), the drive shaft (1) is opened in the middle of the connecting end side and is provided with a pin hole, a metal pin (12) is arranged in the pin hole, and the connecting end of the drive shaft (1) is provided with a driven shaft (2); Driven shaft connecting sleeve (3), the driven shaft connecting sleeve (3) is sleeved on the side of the driven shaft (2) close to the drive shaft (1); Drive shaft connecting sleeve (4), the drive shaft connecting sleeve (4) is sleeved on the connecting end side of the drive shaft (1), and the drive shaft connecting sleeve (4) is clamped in the driven shaft connecting sleeve (3) on the side close to the driven shaft (2); Rubber cylinder (7), the rubber cylinder (7) is clamped between the driven shaft connecting sleeve (3) and the drive shaft connecting sleeve (4).

2. A flexible coupling for testing small bearings according to claim 1, characterized in that The driven shaft connecting sleeve (3) is provided with a driven shaft connecting groove (31) on the side close to the driven shaft (2), the driven shaft connecting sleeve (3) is provided with a drive side mounting groove (32) on the side close to the drive shaft (1), the driven shaft connecting groove (31) and the drive side mounting groove (32) are not communicated, and the inner side wall of the driven shaft connecting groove (31) is attached to the outer side wall of the driven shaft (2).

3. A flexible coupling for testing small bearings according to claim 2, wherein, Threaded holes are formed in the side wall of the driven shaft connecting groove (31), a fastening screw (33) is arranged in the threaded hole, and the bottom of the fastening screw (33) penetrates through the threaded hole and abuts against the outer side wall of the driven shaft (2) in the driven shaft connecting groove (31).

4. A flexible coupling for testing small bearings according to claim 3, wherein, The drive shaft connecting sleeve (4) is provided with a drive shaft connecting groove (41) in the middle, and the side of the drive shaft connecting groove (41) is attached to the outer side wall of the drive shaft (1).

5. A flexible coupling for testing small bearings according to claim 4, wherein, A pair of U-shaped grooves are symmetrically formed on the left and right sides of the drive shaft connecting sleeve (4) away from the driven shaft connecting sleeve (3), the connecting hole bottom is communicated with the drive shaft connecting groove (41), and the middle segment of the metal pin (12) is clamped in the U-shaped groove through the left and right side segments of the drive shaft (1).

6. A flexible coupling for testing small bearings according to claim 5, wherein, There is a gap (5) between the outer side wall of the drive shaft connecting sleeve (4) and the inner side wall of the drive side mounting groove (32), and arc grooves (6) are formed on the outer side wall of the drive shaft connecting sleeve (4) and the inner side wall of the drive side mounting groove (32) at equal intervals.

7. A flexible coupling for testing small bearings according to claim 6, wherein, A plurality of rubber cylinders (7) are arranged, the plurality of rubber cylinders (7) are clamped in the gap (5) at equal intervals, and the left and right sides of the rubber cylinder (7) are positioned through the arc grooves (6).

8. A flexible coupling for testing small bearings according to claim 7, wherein, The connecting end of the drive shaft (1) is not in contact with the driven shaft (2).

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