Rolling bearing dust-proof performance test device

Abstract

The application discloses a kind of rolling bearing dustproof performance test device, including square box, cylindrical box, bearing seat, shaft and motor, to be tested bearing is installed on bearing seat, bearing seat is arranged in cylindrical box, cylindrical box is in square box, one end of shaft is connected with the shaft of motor through coupling, the other end passes through square box and enters cylindrical box and also passes through the inner ring of to be tested bearing on bearing seat, cylindrical box is fixed on the shaft, when testing, motor drives shaft to swing back and forth at 5r / min rotational speed, 90 ° angle.The device of the application can simulate the bearing use environment, accurately detect its dustproof performance, and the test result is reliable, which helps to improve the quality of bearing products.

Description

Technical Field

[0001] This invention relates to the field of bearing performance testing technology, and more specifically to a rolling bearing dustproof performance testing device. Background Technology

[0002] In the field of mechanical engineering, bearings, as core transmission components, are widely used in various engineering machinery and large equipment. Their dustproof sealing performance directly affects the operational stability and service life of the equipment. Therefore, the reliability and operational condition reproduction of bearing dustproof testing equipment are crucial for product testing. However, existing bearing dustproof testing equipment still has significant technical limitations:

[0003] Traditional equipment has limitations in its ability to simulate operating conditions, and can only test unidirectional rotation conditions. However, in actual applications, the key parts of many engineering machines are often in a reciprocating oscillation state. These real motion scenarios are difficult to be effectively reproduced by existing equipment, resulting in deviations between test results and actual service conditions.

[0004] The design of the dust control system is inadequate. Its structure is relatively simple and lacks the ability to precisely control the airflow field, which makes the dust unevenly distributed in the test space and easy to settle quickly. In real working conditions, dust is affected by multiple factors such as mechanical motion and environmental airflow to form a complex three-dimensional turbulent environment. Traditional dust control devices cannot simulate this kind of dynamic dust field, which further reduces the authenticity of the test.

[0005] In the sealing performance verification stage, existing methods are difficult to avoid the risk of abnormal dust intrusion during the testing process, and there is a lack of sealing performance evaluation methods for bearing dynamic operating conditions. This makes it impossible to accurately reflect the dustproof effect of the sealing structure in actual operation and to fully expose potential defects in the sealing design. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a rolling bearing dustproof performance testing device. By setting up a reciprocating oscillating motor to drive the shaft to simulate real working conditions, and combining a double-layer structure of square and cylindrical housings with baffle blades to achieve uniform dust distribution, the device also ensures the accuracy of sealing performance testing through a reasonable bearing installation structure. This solves the problems of low working condition simulation, uneven dust distribution, and inaccurate sealing performance evaluation in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: including a square housing, a cylindrical housing, a bearing housing, a shaft, and a motor. The bearing to be tested is mounted on the bearing housing, which is located inside the cylindrical housing. The cylindrical housing is located inside the square housing. One end of the shaft is connected to the motor shaft via a coupling, and the other end passes through the square housing and enters the cylindrical housing, also passing through the inner ring of the bearing to be tested on the bearing housing. The cylindrical housing is fixed on the shaft. During testing, the motor drives the shaft to reciprocate at a speed of 5 r / min and an angle of 90°.

[0008] As a further improvement of the present invention, connecting shaft holes are provided at the center of both ends of the cylindrical box. A connecting sleeve is coaxially fixed at the outer end of the connecting shaft hole. After the bolt passes through the connecting sleeve, it is threadedly connected to the shaft to fix the cylindrical box on the shaft.

[0009] As a further improvement of the present invention, a plurality of bolt holes extending along its axial direction are provided on the shaft at a position relative to the connecting sleeve.

[0010] As a further improvement of the present invention, a number of baffle blades are provided on the inner wall of the cylindrical box. The baffle blades are evenly distributed in a spiral shape on the inner wall of the cylindrical box, and the installation angle of the baffle blades is 30-45°.

[0011] As a further improvement of the present invention, the shape of the spoiler blade is that of an aero-engine blade.

[0012] As a further improvement of the present invention, the bearing housing is cylindrical, the bearing to be tested is fixed on one end of the bearing housing, and the end of the bearing housing facing away from the bearing to be tested passes through the end face of the cylindrical housing and is fixed on the inner side wall of the square housing. A rubber seal is provided between the side wall of the bearing housing and the end face of the cylindrical housing.

[0013] As a further improvement of the present invention, the bearing housing is provided with a mounting ring on the inner wall of one end of the bearing to be tested. An annular mounting notch is opened on the end face of the mounting ring, and a mounting ring plate is fixed on the end face by bolts. The end face of the mounting ring plate and the mounting notch are combined to form a mounting groove for accommodating the outer ring of the bearing to be tested.

[0014] As a further improvement of the present invention, the cylindrical box is composed of two end panels and two half cylinders. The two end panels are respectively fixed to the opposite end faces of the two half cylinders by bolts. The connecting shaft hole is opened on the end panel, and the opposite ends of the two half cylinders are connected to each other by bolts.

[0015] As a further improvement of the present invention, a limiting ring is fixed at a position close to the bearing to be tested on the shaft, and a limiting edge is formed at a position spaced apart from the limiting ring, with the bearing to be tested positioned between the limiting ring and the limiting edge.

[0016] The beneficial effects of this invention are as follows: by driving the shaft to reciprocate at a speed of 5 r / min and an angle of 90° with a motor, the actual motion conditions of bearings in engineering machinery are accurately reproduced, overcoming the limitation of traditional equipment that can only perform unidirectional rotation tests; the double-layer box structure combined with the cylindrical box swinging with the shaft effectively simulates the dust movement state in the real environment, improving the authenticity of the test; the reasonable bearing installation method ensures that the risk of abnormal dust intrusion during the test is reduced, and accurate evaluation of sealing performance is achieved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the rolling bearing dustproof performance testing device of the present invention. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0019] Reference Figure 1 As shown, the rolling bearing dustproof performance testing device of this embodiment includes a square housing 1, a cylindrical housing 2, a bearing seat 3, a shaft 4, and a motor 7. The bearing 5 to be tested is installed on the bearing seat 3, which is located inside the cylindrical housing 2. The cylindrical housing 2 is located inside the square housing 1. One end of the shaft 4 is connected to the rotating shaft of the motor 7 via a coupling 6, and the other end passes through the square housing 1 and then into the cylindrical housing 2, passing through the inner ring of the bearing 5 to be tested on the bearing seat 3. The cylindrical housing 2 is fixed on the shaft 4. During the test, the motor 7 drives the shaft to reciprocate at a speed of 5 r / min and an angle of 90°. The reciprocating oscillation of the shaft 4 driven by the motor 7 simulates the real working condition and solves the problem that traditional equipment cannot reproduce the reciprocating oscillation state. The cylindrical housing 2 oscillates with the shaft, and together with the subsequent baffle blades 23, it can form a uniform dust field, solving the problem of uneven dust distribution. The installation structure of the bearing seat 3 and the bearing to be tested ensures the accuracy of the sealing performance test and solves the problem of inaccurate sealing performance evaluation.

[0020] Furthermore, connecting shaft holes 21 are provided at the center of both ends of the cylindrical housing 2. A coaxial connecting sleeve 22 is fixed to the outer end of the connecting shaft hole 21. Bolts are threaded through the connecting sleeve 22 and connected to the shaft 4 to fix the cylindrical housing 2. Tightening the bolts to the connecting sleeve 22 and the shaft 4 ensures that the cylindrical housing 2 swings synchronously with the shaft 4, helping to maintain the stability of the dust field, facilitating the adjustment of the position of the cylindrical housing 2, and improving the versatility of the device.

[0021] Furthermore, the shaft 4 has several axially extending bolt holes corresponding to the connecting sleeve 22. During operation, bolts pass through the connecting sleeve 22 and are screwed into bolt holes at different positions to adjust the axial position of the cylindrical housing 2, assisting in the adaptation of bearings 5 ​​of different sizes to be tested and enhancing the versatility of the device.

[0022] Furthermore, the inner wall of the cylindrical box 2 is provided with several spirally distributed, uniformly arranged baffles 23, with an installation angle of 30-45°. When the cylindrical box 2 swings, the baffles 23 disturb the internal dust to form a uniform turbulent flow field, which helps to simulate the dust environment under real working conditions, improves the uniformity of dust distribution, and enhances the reliability of the test results.

[0023] Furthermore, the spoiler blade 23 is shaped like an aero-engine blade. This blade shape enhances the airflow disturbance effect, makes the dust distribution more uniform, helps improve the accuracy of dust field simulation, and has the additional technical effect of reducing blade drag loss and extending the service life of the device.

[0024] Furthermore, the bearing housing 3 is cylindrical, with the bearing 5 to be tested fixed at one end. The other end protrudes from the end face of the cylindrical housing 2 and is fixed to the inner side wall of the square housing 1. A rubber seal 31 is provided between the side wall and the end face. The rubber seal 31 prevents dust from entering through the gap, helps ensure the accuracy of the sealing performance test, and additionally improves the overall sealing performance of the device.

[0025] Furthermore, the inner wall of the bearing housing 3 is provided with a mounting ring 32, and an annular mounting notch 33 is opened on the end face. The mounting ring plate 34 is fixed by bolts to form a mounting groove to accommodate the outer ring of the bearing 5 to be tested. The mounting ring plate 34 and the notch fix the outer ring of the bearing 5 to be tested, ensuring a stable installation, helping to improve the testing accuracy, and the additional technical effect is to facilitate the disassembly and replacement of the bearing.

[0026] Furthermore, the cylindrical housing 2 is composed of two end panels 24 and two semi-cylinders 25. The end panels 24 are fixed to the opposite end faces of the semi-cylinders 25, and the connecting shaft holes 21 are opened on the end panels 24. The opposite ends of the semi-cylinders 25 are bolted together. The semi-cylinder structure facilitates the opening of the housing for bearing installation and maintenance, enhances the ease of use of the lifting device, and provides additional technical benefits such as facilitating the inspection and cleaning of internal components.

[0027] Furthermore, a limiting ring 41 is fixed near the bearing 5 to be tested on shaft 4, with a limiting edge 42 formed at the interval, and the bearing 5 to be tested positioned between the two. The limiting ring 41 and the limiting edge 42 limit the axial position of the bearing, ensuring correct installation, helping to improve test accuracy, preventing axial movement of the bearing, and protecting the bearing and device components.

[0028] In summary, this invention provides a rolling bearing dustproof performance testing device. Through the reciprocating oscillating motor 7 driving the shaft 4, the double-layer housing structure, the baffle blades 23, and the reasonable bearing installation structure, it solves the problems of low working condition reproduction, uneven dust distribution, and inaccurate sealing performance evaluation of traditional equipment. It achieves accurate testing of bearing dustproof performance, improves the reliability and authenticity of test results, and provides an effective means for quality control of bearing products.

[0029] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A testing device for the dustproof performance of rolling bearings, characterized in that: The test assembly includes a square housing (1), a cylindrical housing (2), a bearing housing (3), a shaft (4), and a motor (7). The bearing (5) to be tested is mounted on the bearing housing (3), which is located inside the cylindrical housing (2). The cylindrical housing (2) is located inside the square housing (1). One end of the shaft (4) is connected to the shaft of the motor (7) via a coupling (6), and the other end passes through the square housing (1) and enters the cylindrical housing (2), also passing through the inner ring of the bearing (5) to be tested on the bearing housing (3). The cylindrical housing (2) is fixed on the shaft (4). During the test, the motor (7) drives the shaft to swing back and forth at a speed of 5 r / min and an angle of 90°. The two ends of the cylindrical housing (2) are centered. A connecting shaft hole (21) is provided at the position of the connecting shaft hole (21), and a connecting sleeve (22) is coaxially fixed at the outer end of the connecting shaft hole (21). After the bolt passes through the connecting sleeve (22), it is threadedly connected to the shaft (4) to fix the cylindrical box (2) on the shaft (4). Several bolt holes extending along its axial direction are provided on the shaft (4) at the position relative to the connecting sleeve (22). Several baffle blades (23) are also provided on the inner side wall of the cylindrical box (2). The baffle blades (23) are evenly distributed in a spiral shape on the inner side wall of the cylindrical box (2), and the installation angle of the baffle blades (23) is 30-45°. The shape of the baffle blades (23) is that of an aircraft engine blade.

2. The rolling bearing dustproof performance testing device according to claim 1, characterized in that: The bearing housing (3) is cylindrical. The bearing to be tested (5) is fixed on one end of the bearing housing (3). The end of the bearing housing (3) facing away from the bearing to be tested (5) passes through the end face of the cylindrical box (2) and is fixed on the inner side wall of the square box (1). A rubber seal (31) is provided between the side wall of the bearing housing (3) and the end face of the cylindrical box (2).

3. The rolling bearing dustproof performance testing device according to claim 2, characterized in that: The bearing housing (3) has an installation ring (32) on one end of the inner wall of the bearing (5) to be tested. The end face of the installation ring (32) has an annular installation notch (33), and an installation ring plate (34) is fixed on the end face by bolts. The end face of the installation ring plate (34) and the installation notch (33) are combined to form an installation groove for accommodating the outer ring of the bearing (5) to be tested.

4. The rolling bearing dustproof performance testing device according to any one of claims 2 to 3, characterized in that: The cylindrical box (2) is composed of two end panels (24) and two half cylinders (25). The two end panels (24) are fixed to the opposite end faces of the two half cylinders (25) by bolts. The connecting shaft hole (21) is opened on the end panel (24). The opposite ends of the two half cylinders (25) are connected to each other by bolts.

5. The rolling bearing dustproof performance testing device according to any one of claims 2 to 3, characterized in that: A limiting ring (41) is fixed on the shaft (4) near the bearing (5) to be tested, and a limiting edge (42) is formed at a position spaced apart from the limiting ring (41). The bearing (5) to be tested is located between the limiting ring (41) and the limiting edge (42).

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