Bearing rated load testing device

Abstract

The utility model belongs to the field of bearing testing equipment, and provides a bearing rated load testing device which comprises a support, at least one load applying unit and a bearing fixing unit used in cooperation with the load applying unit are arranged on the support, and a driving unit is arranged at the power input end of the bearing fixing unit. The bearing capacity is adjusted by arranging the screw rod and utilizing a thread structure, accurate control over force can be achieved, meanwhile, the structure is simplified, by designing the testing shafts matched with the to-be-tested bearing for use, the wide adaptability of the device is improved, the utilization rate of the device can be effectively improved, the testing shafts are divided into the first testing shaft and the second testing shaft, and the testing efficiency is improved. According to the utility model, a common bearing and a thrust bearing can be tested, and the problem that only one single bearing can be detected and the function is single when the bearing is tested in the prior art can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing testing equipment, and in particular relates to a bearing rated load testing device. Background Technology

[0002] Bearings are an important component in mechanical equipment. Their main function is to support the rotation of mechanical parts, reduce the coefficient of friction between the bearing and other parts during its movement, and ensure its rotational accuracy.

[0003] However, existing technologies for testing bearings typically only allow testing on a single type of bearing, resulting in limited functionality. Utility Model Content

[0004] This invention addresses the aforementioned technical problems in bearing testing by proposing a bearing rated load testing device that is rationally designed, simple in structure, capable of testing various types of bearings, and highly practical.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a bearing rated load testing device, including a bracket, characterized in that at least one load application unit and a bearing fixing unit used in conjunction with the load application unit are provided on the bracket, and a drive unit is provided at the power input end of the bearing fixing unit.

[0006] Preferably, the load application unit includes a screw for adjusting the load magnitude, the screw being mounted on a bracket via a threaded joint, and the axis of the screw being positioned along the direction of force applied to the bearing under test.

[0007] Preferably, the screw is provided with a movable support base, a connector is installed on the support base, and a pressure sensor is provided between the connector and the support base.

[0008] Preferably, the connector is provided with a pressure block that mates with the bearing to be tested, and the pressure block is provided with a pressure groove that mates with the outer circle of the bearing to be tested.

[0009] Preferably, the bearing fixing unit includes a test shaft for mounting the bearing.

[0010] Preferably, the drive unit includes a rotating shaft that is connected to the test shaft in a driving connection. One end of the rotating shaft is connected to one end of the test shaft. The rotating shaft is engaged with a bearing seat mounted on a bracket. A motor is mounted on the other end of the rotating shaft.

[0011] Preferably, the test shaft is a second test shaft, which is provided with a boss for limiting one end of the bearing to be tested. The end of the second test shaft is inserted into the inner ring of the bearing to be tested, and one end of the second test shaft is provided with a bolt for limiting the other end of the bearing.

[0012] Preferably, the outer diameter of the end of the second test shaft is equal to the inner diameter of the inner ring of the bearing to be tested, and the outer diameter of the boss is not greater than the outer diameter of the inner ring of the bearing to be tested.

[0013] Preferably, the test shaft consists of two first test shafts used in conjunction, and the two first test shafts are coaxially arranged. The two first test shafts are respectively connected to the rotating shaft and the connecting piece through a threaded structure, and the end of the first test shaft is provided with a groove to accommodate one end of the thrust bearing.

[0014] Preferably, the test shaft is connected to a rotating shaft and / or a connector via a threaded structure.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. This utility model provides a bearing rated load testing device. By incorporating a screw and utilizing a threaded structure to adjust the load-bearing capacity, it achieves precise force control while simplifying the structure. The design of a test shaft for use with the bearing under test increases the device's versatility and effectively improves its utilization rate. Dividing the test shaft into a first test shaft and a second test shaft enables the testing of both ordinary bearings and thrust bearings. This addresses the limitation of existing technologies that typically only test a single type of bearing, resulting in limited functionality. This device is rationally designed, simple in structure, capable of testing multiple types of bearings, and highly practical, making it suitable for large-scale deployment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A working diagram of a bearing rated load testing device provided in Embodiments 1 and 2;

[0019] Figure 2 A half-sectional view of a bearing rated load testing device provided in Example 1 for testing a common bearing;

[0020] Figure 3This is a half-sectional schematic diagram of a bearing rated load testing device provided in Example 2 for testing a thrust bearing;

[0021] In the above figures: 1-bracket; 2-slider; 3-screw; 4-support base; 5-pressure sensor; 6-slide rail; 7-connector; 8-pressure block; 9-rotating shaft; 10-first test shaft; 11-second test shaft; 12-motor; 13-groove; 14-bore. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1, as Figure 1 and Figure 2 As shown in the figure, this embodiment provides a bearing rated load testing device, including a bracket 1. At least one load application unit and a bearing fixing unit that cooperates with the load application unit are mounted on the bracket 1. A drive unit is provided at the power input end of the bearing fixing unit. The bearing fixing unit includes a test shaft for mounting the bearing; in this embodiment, the test shaft is a second test shaft 11, used for mounting ordinary bearings. The drive unit provides rotational power to the bearing fixing unit, which fixes the bearing under test, while the load application unit applies a load to the bearing, thereby achieving the testing of ordinary bearings.

[0025] To improve the testing performance of this device, considering the adjustability of the load application unit, the load application unit of this invention includes a screw 3 for adjusting the load magnitude. The screw 3 is mounted on the bracket 1 via a threaded joint, and the axis of the screw 3 is aligned with the direction of force on the bearing under test. By rotating and adjusting the screw 3, the load-bearing capacity can be adjusted, enabling precise control of the force and simplifying the mechanical structure.

[0026] Furthermore, this invention provides a movable support base 4 on the screw 3, a connector 7 is mounted on the support base 4, and a pressure sensor 5 is disposed between the connector 7 and the support base 4. The pressure sensor 5 is used to measure the actual load pressure and ensure the accuracy of controlling the initial load.

[0027] To ensure the stability of the applied load and reduce detection errors, the support base 4 provided by this utility model is provided with a sliding unit between the support base 4 and the bracket 1. The sliding unit includes a slide rail 6 and a slider 2, which are respectively fixedly installed on the bracket 1 and the support base 4. Through the cooperation of the slider 2 and the slide rail 6, the support base 4 has sufficient support surface and high linearity of movement during the lifting and adjusting process, so as to realize the movement adjustment of the support base 4. This ensures the uniformity of the reverse pressure on the support base 4, and thus ensures the stability and controllability of the load on the bearing under test.

[0028] The connector 7 provided in this embodiment can directly contact and apply force to the bearing, or indirectly contact and apply force to the bearing to be tested. In order to improve the uniformity of force application, the present invention provides a pressure block 8 on the connector 7 to cooperate with the bearing to be tested. The pressure block 8 is provided with a pressure groove that cooperates with the outer circle of the bearing to be tested. The pressure groove and the bearing to be tested have a good matching degree. The connector 7 can apply force to the bearing to be tested uniformly through the pressure block 8, which helps to reduce the error of bearing testing.

[0029] The drive unit includes a rotating shaft 9 that is connected to the test shaft. One end of the rotating shaft 9 is connected to one end of the test shaft, and the rotating shaft 9 cooperates with a bearing seat mounted on the bracket 1. The other end of the rotating shaft 9 is equipped with a motor 12. The motor 12 provides rotational driving force to the rotating shaft 9, which in turn provides rotational power to the second test shaft 11, causing the inner ring of the bearing under test to rotate, thereby enabling the testing of the bearing under applied load under dynamic conditions.

[0030] To reduce the axial detection error of the bearing under test, the second test shaft 11 provided in this embodiment is provided with a boss 14 for limiting one end of the bearing under test. The end of the second test shaft 11 is inserted into the inner ring of the bearing under test, and a bolt is provided at one end of the second test shaft 11 for limiting the other end of the bearing. The outer diameter of the end of the second test shaft 11 is equal to the inner diameter of the inner ring of the bearing under test, and the outer diameter of the boss 14 is not greater than the outer diameter of the inner ring of the bearing under test. The bolt and the boss 14 limit the two ends of the bearing under test, preventing significant movement during the testing process.

[0031] Example 2, as Figure 1 and Figure 3As shown, this embodiment provides a bearing rated load testing device. Unlike Embodiment 1, this embodiment provides two cooperating first test shafts 10, which are coaxially arranged. The two first test shafts 10 are connected to the rotating shaft 9 and the connecting piece 7 respectively via threaded structures. The end of the first test shaft 10 is provided with a groove 13 to accommodate one end of the thrust bearing. The thrust bearing is clamped in the groove 13 by the cooperation of the two first test shafts 10 for testing. The load-bearing capacity can be adjusted by rotating the adjusting screw 3. At the same time, the motor 12 provides rotational driving force to the rotating shaft 9, which in turn provides rotational power to the first test shafts 10, causing the inner ring of the bearing under test to generate rotational power, thereby enabling the testing of the bearing under applied load under dynamic conditions.

[0032] To facilitate the replacement and use of different test shafts to complete the corresponding testing items, the test shaft provided by this utility model is connected to the rotating shaft 9 and / or the connecting piece 7 through a threaded structure.

[0033] When using this device for testing, the appropriate test shaft is selected according to the type of bearing. By setting the screw 3, the load-bearing capacity can be adjusted using the threaded structure, enabling precise control of the force and simplifying the structure. The design of the test shaft for use with the bearing under test increases the versatility of the device and effectively improves its utilization rate. The test shaft is divided into a first test shaft 10 and a second test shaft 11, which can test both ordinary bearings and thrust bearings. Therefore, it can solve the problem of the limited functionality of existing technologies that can usually only test a single type of bearing.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A bearing rated load testing device, comprising a support, characterized in that, The support is equipped with at least one load application unit and a bearing fixing unit that cooperates with the load application unit. The power input end of the bearing fixing unit is equipped with a drive unit. The load application unit includes a screw for adjusting the load size. The screw is mounted on the support via a threaded joint, and the axis of the screw is set along the direction of force on the bearing under test. A movable support is provided on the screw, and a connector is mounted on the support. A pressure sensor is provided between the connector and the support. A pressure block that cooperates with the bearing under test is provided on the connector, and a pressure groove that cooperates with the outer circle of the bearing under test is provided on the pressure block.

2. The bearing rated load testing device according to claim 1, characterized in that, The bearing fixing unit includes a test shaft for mounting the bearing.

3. The bearing rated load testing device according to claim 2, characterized in that, The drive unit includes a rotating shaft that is connected to the test shaft. One end of the rotating shaft is connected to one end of the test shaft. The rotating shaft is engaged with a bearing seat mounted on a bracket. A motor is mounted on the other end of the rotating shaft.

4. A bearing rated load testing device according to claim 2 or 3, characterized in that, The test shaft is a second test shaft. The second test shaft is provided with a boss for limiting one end of the bearing to be tested. The end of the second test shaft is inserted into the inner ring of the bearing to be tested. One end of the second test shaft is provided with a bolt for limiting the other end of the bearing.

5. The bearing rated load testing device according to claim 4, characterized in that, The outer diameter of the end of the second test shaft is equal to the inner diameter of the inner ring of the bearing to be tested, and the outer diameter of the boss is not greater than the outer diameter of the inner ring of the bearing to be tested.

6. A bearing rated load testing device according to claim 2 or 3, characterized in that, The test shaft consists of two first test shafts used in conjunction, and the two first test shafts are coaxially arranged. The two first test shafts are respectively connected to the rotating shaft and the connecting piece through a threaded structure. The end of the first test shaft is provided with a groove to accommodate one end of the thrust bearing.

7. The bearing rated load testing device according to claim 3, characterized in that, The test shaft is connected to a rotating shaft and / or a connector via a threaded structure.

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