Hub bearing life test device

Abstract

The invention relates to the technical field of motorcycles, in particular to a service life test device for a hub bearing. Comprising a numerical control cabinet body, a protection assembly and an adjusting assembly, the adjusting assembly comprises a mounting frame, a bogie, a mounting shaft, a driving wheel, a first gear, a motor frame, a servo motor, a second gear and a transmission component, and the transmission component acts to drive the driving wheel to rotate so that a test bearing can rotate for testing; in a steering simulation state, the servo motor is controlled to act to drive the bogie to rotate so as to realize matching angle adjustment of the test bearing and the driving wheel, but the test bearing and the driving wheel are not separated, equipment is stopped after a certain time, and the test bearing is taken down to detect an internal rolling ball; whether the quality of the tested bearing meets the service life standard or not is judged according to the abrasion condition of the rolling ball and whether the rolling ball is damaged or not, and then the problems that an existing testing device is difficult to simulate the multi-degree-of-freedom stress state of the hub bearing in the vehicle steering scene, and multi-scene service life testing of the hub bearing is inconvenient are solved.

Description

Technical Field

[0001] This invention relates to the field of motorcycle technology, and more particularly to a wheel hub bearing life testing device. Background Technology

[0002] The lifespan and performance of motorcycle wheel hub bearings are directly related to the vehicle's safety, steering smoothness, and comfort. Therefore, it is necessary to conduct simulation tests on vehicle wheel hub bearings under various working conditions.

[0003] A search revealed that Chinese patent CN117129214B discloses a durability testing device for wheel hub bearings, relating to the field of wheel hub bearing durability testing. The device includes a testing frame with a protective cover hinged to the right end of the rear side wall. A cooling fan is rotatably connected to the left side wall of the testing frame. A front baffle is hinged to the right side of the front side wall of the testing frame, and a flip plate is hinged to the middle of the right side wall of the front baffle. A sliding block is connected to the front side wall of the flip plate. By placing the bearing inner ring on the top outer wall of the top support plate and then rotating the rotating head, the position of the adjusting shaft seat on the threaded rod is changed. This alters the distance between the adjusting shaft seat and the fixed shaft seat, causing the support plate to be lifted by six support columns, moving it away from the threaded rod. This supports the bearing inner ring and facilitates bearing fixation. This invention addresses the problems of long bearing testing cycles, high bearing temperatures, large accuracy deviations, and the high risk of debris splashing during testing.

[0004] However, the above-mentioned device has the following problems when in use: it is difficult to simulate the multi-degree-of-freedom force state of wheel hub bearings in vehicle steering scenarios, and it is inconvenient to conduct multi-scenario life tests of wheel hub bearings. Summary of the Invention

[0005] The purpose of this invention is to provide a wheel hub bearing life testing device, which solves the problem that existing testing devices are difficult to simulate the multi-degree-of-freedom stress state of wheel hub bearings under vehicle steering scenarios, and are inconvenient to conduct multi-scenario life tests on wheel hub bearings.

[0006] To achieve the above objectives, the present invention provides a life testing device for wheel hub bearings, including a CNC cabinet body, a protective component on the top of the CNC cabinet body, and an adjustment component; The adjustment assembly includes a mounting bracket, a bogie, a mounting shaft, a drive wheel, a first gear, a motor frame, a servo motor, a second gear, and a transmission component. The mounting bracket is installed on the top of the CNC cabinet body and located inside the protective cover. The bogie is rotatably mounted on the mounting bracket, and the mounting shaft is rotatably mounted on the bogie. A test bearing is mounted on the mounting shaft via a locking component. The drive wheel contacts the test bearing and is located at the bottom of the test bearing, and is driven to rotate by the transmission component. The first gear is installed on the top of the bogie, and the motor frame is installed on the top of the mounting bracket and close to the first gear. The servo motor is installed on the top of the motor frame and is electrically connected to the CNC cabinet body. The second gear is fixedly installed on the output shaft of the servo motor and meshes with the first gear.

[0007] The protective components include a protective cover and a switch door. The protective cover is installed on the top of the CNC cabinet body, and the switch door is located on the left side of the protective cover.

[0008] The locking component includes a spacer ring and a locking nut. The spacer ring is sleeved on the mounting shaft and abuts against the inner ring of the test bearing. The locking nut is threaded to the mounting shaft and abuts against the spacer ring.

[0009] The transmission component includes a support frame and a mating component. The support frame is installed on the top of the CNC cabinet body and is rotatably connected to the drive wheel. The mating component is located on the front side of the support frame.

[0010] The mating components include a fixing plate and a speed-regulating motor. The fixing plate is installed on the top of the CNC cabinet body. The speed-regulating motor is installed on the fixing plate, and its output shaft is connected to the drive wheel through a coupling and electrically connected to the CNC cabinet body.

[0011] The protective cover is equipped with a CNC panel and a work indicator light. The CNC panel is electrically connected to the main body of the CNC cabinet and is installed on the left rear side of the protective cover. The work indicator light is electrically connected to the main body of the CNC cabinet and is installed on the top of the protective cover.

[0012] The wheel hub bearing life testing device further includes an isolation assembly, which includes a front side plate and a rear side plate. The front side plate and the rear side plate are respectively detached and installed on both sides of the mounting frame, and are located outside the first gear and the second gear.

[0013] This invention discloses a wheel hub bearing life testing device. During testing, the test bearing is mounted on a mounting shaft via a locking component. Then, the drive wheel is rotated by the action of a transmission component, thus achieving the rotation of the test bearing for life testing. To simulate a steering state, a servo motor is controlled to rotate the bogie, thereby adjusting the engagement angle between the test bearing and the drive wheel without disengaging them. After a certain period, the device is stopped, and the test bearing is removed to inspect its internal rolling balls. The wear and damage of the rolling balls determine whether the quality of the test bearing meets the service life standard. This solves the problem that existing testing devices are unable to simulate the multi-degree-of-freedom stress state of wheel hub bearings under vehicle steering scenarios, making it inconvenient to conduct multi-scenario life tests on wheel hub bearings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the wheel hub bearing life testing device according to the first embodiment of the present invention.

[0016] Figure 2 This is a structural schematic diagram of the bogie according to the first embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the front side plate of the second embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the sleeve structure according to the third embodiment of the present invention.

[0019] In the diagram: 101-CNC cabinet body, 102-mounting bracket, 103-bogie, 104-mounting shaft, 105-drive wheel, 106-first gear, 107-motor frame, 108-servo motor, 109-second gear, 110-protective cover, 111-opening and closing door, 112-spacer ring, 113-locking nut, 114-support frame, 115-fixed plate, 116-speed regulating motor, 117-CNC panel, 118-work indicator light, 119-test bearing, 201-front side plate, 202-rear side plate, 301-sleeve, 302-connector. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. Example 1:

[0021] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of the wheel hub bearing life testing device. Figure 2 This is a structural schematic diagram of a bogie. The present invention provides a wheel hub bearing life testing device: comprising a CNC cabinet body 101, a protective assembly, and an adjustment assembly. The adjustment assembly includes a mounting frame 102, a bogie 103, a mounting shaft 104, a drive wheel 105, a first gear 106, a motor frame 107, a servo motor 108, a second gear 109, and a transmission component. The protective assembly includes a protective cover 110 and a switch door 111. The locking component includes a spacer ring 112 and a locking nut 113. The transmission component includes a support frame 114 and a mating component. The mating component includes a fixing plate 115 and a speed-regulating motor 116. This solution solves the problem that existing testing devices struggle to simulate the multi-degree-of-freedom stress state of wheel hub bearings under vehicle steering scenarios, making multi-scenario life testing of wheel hub bearings inconvenient. It is understood that the aforementioned solution can simulate the multi-degree-of-freedom stress state of wheel hub bearings under vehicle steering scenarios, facilitating multi-scenario life testing of wheel hub bearings.

[0022] In this embodiment, a protective component is provided on the top of the CNC cabinet body 101, and a servo driver, contactor and other control devices are provided inside the CNC cabinet body 101. A fan cooling mechanism is provided on its rear side. In addition, the circuits, electronic components and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this invention does not involve the improvement of software and methods.

[0023] The mounting bracket 102 is mounted on the top of the CNC cabinet body 101 and located inside the protective cover 110. The bogie 103 is rotatably mounted on the mounting bracket 102. The mounting shaft 104 is rotatably mounted on the bogie 103. A test bearing 119 is mounted on the mounting shaft 104 via a locking member. The drive wheel 105 contacts the test bearing 119 and is located at the bottom of the test bearing 119. It is driven to rotate by the transmission member. The first gear 106 is mounted on the top of the bogie 103. The motor frame 107 is mounted on the top of the mounting bracket 102 and is close to the first gear 106. The servo motor 108 is mounted on the top of the motor frame 107 and is electrically connected to the CNC cabinet body 101. The second gear 109 is fixedly mounted on the output shaft of the servo motor 108 and meshes with the first gear 106. The mounting bracket 102 is fixed by positioning pins and bolts. The top of the bogie 103 is mounted on the mounting bracket 102 by a rotating bearing, and the first gear 106 is mounted on its top by a key and locking bolts. The mounting shaft 104 is mounted on the bogie 103 by a rotating bearing. The test bearing 119 is mounted on the front side of the mounting shaft 104. The drive wheel 105 is used to rotate the test bearing 119. The motor frame 107 is fixed by positioning pins and bolts arranged from bottom to top. The servo motor 108 is equipped with a brake mechanism and an encoder for easy shaft locking and rotation angle control when stopping, and is fixed by bolts. The second gear 109 is mounted on its output shaft by a key and locking bolts.

[0024] Secondly, the protective cover 110 is installed on the top of the CNC cabinet body 101; the switch door 111 is located on the left side of the protective cover 110. The protective cover 110 is used to prevent rotating parts from flying out due to loosening during processing, thereby improving safety.

[0025] Then, the spacer ring 112 is sleeved on the mounting shaft 104 and abuts against the inner ring of the test bearing 119; the locking nut 113 is threadedly connected to the mounting shaft 104 and abuts against the spacer ring 112. The spacer ring 112 abuts against the inner ring on the front side of the test bearing 119, and the stepped portion of the mounting shaft 104 is provided with a stepped portion that abuts against the inner ring on the rear side of the test bearing 119. The locking nut 113 directly engages with the stepped external thread end on the mounting shaft 104 to limit the spacer ring 112, thereby ensuring that the test bearing 119 is stably mounted on the mounting shaft 104. Simultaneously, to test the temperature of the test bearing 119 during rotation, a temperature sensor can be installed on the front side of the mounting shaft 104, as described in the prior art CN120232640A, or an infrared temperature measuring device facing but not in contact with the bearing can be installed on the mounting bracket 102 for temperature monitoring. The temperature data can be displayed on the display screen of the CNC panel 117.

[0026] Furthermore, the support frame 114 is mounted on the top of the CNC cabinet body 101 and is rotatably connected to the drive wheel 105; the mating component is located on the front side of the support frame 114. The support frame 114 is fixed by locating pins and bolts, and the shaft ends on both sides of the drive wheel 105 are respectively mounted on the support frame 114 by rotating bearings. The mating component is used to drive the drive wheel 105 to rotate.

[0027] Next, the fixing plate 115 is installed on the top of the CNC cabinet body 101; the speed-regulating motor 116 is installed on the fixing plate 115, and its output shaft is connected to the drive wheel 105 through a coupling and electrically connected to the CNC cabinet body 101. The fixing plate 115 is fixed by positioning pins and bolts. The speed-regulating motor 116 adopts frequency conversion speed regulation, and the frequency converter is installed inside the CNC cabinet body 101. After the speed-regulating motor 116 works, it will drive the drive wheel 105 to rotate. Since the drive wheel 105 is always in contact with the outer ring of the test bearing 119, it can drive the test bearing 119 to rotate.

[0028] Finally, the CNC panel 117 is electrically connected to the CNC cabinet body 101 and installed on the left rear side of the protective cover 110; the work indicator light 118 is electrically connected to the CNC cabinet body 101 and installed on the top of the protective cover 110. The CNC panel 117 is used for equipment operation and corresponding parameter settings. The work indicator light 118 adopts a three-color indicator light according to existing technology: flashing red indicates equipment malfunction alarm, solid green indicates processing status, and yellow indicates processing completed and equipment standby status.

[0029] When using this invention to address the problem that existing testing devices struggle to simulate the multi-degree-of-freedom stress state of wheel bearings under vehicle steering scenarios, making multi-scenario life tests of wheel bearings inconvenient, the test bearing 119 is mounted on the mounting shaft 104 via the locking member. Then, the drive wheel 105 rotates via the transmission member, allowing the test bearing 119 to rotate for life testing. To simulate steering, the servo motor 108 is controlled to rotate the bogie 103, adjusting the engagement angle between the test bearing 119 and the drive wheel 105 without disengaging them. After a certain time, the equipment is stopped, and the test bearing 119 is removed to inspect its internal rolling balls. The wear and damage of the rolling balls determine whether the quality of the test bearing 119 meets the service life standard. This solves the problem that existing testing devices struggle to simulate the multi-degree-of-freedom stress state of wheel bearings under vehicle steering scenarios, making multi-scenario life tests of wheel bearings inconvenient. Example 2:

[0030] like Figure 3 As shown, where Figure 3 This is a schematic diagram of the front side plate. Based on the first embodiment, the present invention provides a wheel hub bearing life testing device, which further includes an isolation component, including a front side plate 201 and a rear side plate 202.

[0031] The front side plate 201 and the rear side plate 202 are respectively detached and installed on both sides of the mounting bracket 102, and are located outside the first gear 106 and the second gear 109. The front side plate 201 and the rear side plate 202 are respectively fixed by bolts.

[0032] In this embodiment, by providing the front side plate 201 and the rear side plate 202, it is beneficial to prevent the gear teeth from flying out directly after being damaged and falling off when the first gear 106 and the second gear 109 are meshing and transmitting, thereby improving processing safety. Example 3:

[0033] like Figure 4 As shown, where Figure 4 This is a schematic diagram of the sleeve structure. Based on the first embodiment, the present invention provides a wheel hub bearing life testing device, which further includes a reinforcing component, including a sleeve 301 and a connector 302.

[0034] The sleeve 301 abuts against the mounting bracket 102 and the motor bracket 107 respectively; the connector 302 passes through the motor bracket 107, the sleeve 301, and the mounting bracket 102 respectively. The sleeve 301 is directly slidably installed between the mounting bracket 102 and the motor bracket 107 and is limited by the connector 302, which is a T-shaped tie rod and a nut.

[0035] In this embodiment, the sleeve 301 can improve the working stability of the motor frame 107, thereby improving the working stability of the servo motor 108.

[0036] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A life testing device for wheel hub bearings, comprising a CNC cabinet body, wherein a protective component is provided on the top of the CNC cabinet body, characterized in that, It also includes adjustment components; The adjustment assembly includes a mounting bracket, a bogie, a mounting shaft, a drive wheel, a first gear, a motor frame, a servo motor, a second gear, and a transmission component. The mounting bracket is installed on the top of the CNC cabinet body and located inside the protective cover. The bogie is rotatably mounted on the mounting bracket, and the mounting shaft is rotatably mounted on the bogie. A test bearing is mounted on the mounting shaft via a locking component. The drive wheel contacts the test bearing and is located at the bottom of the test bearing, and is driven to rotate by the transmission component. The first gear is installed on the top of the bogie, and the motor frame is installed on the top of the mounting bracket and close to the first gear. The servo motor is installed on the top of the motor frame and is electrically connected to the CNC cabinet body. The second gear is fixedly installed on the output shaft of the servo motor and meshes with the first gear.

2. The wheel hub bearing life testing device as described in claim 1, characterized in that, The protective assembly includes a protective cover and a switch door. The protective cover is installed on the top of the CNC cabinet body; the switch door is located on the left side of the protective cover.

3. The wheel hub bearing life testing device as described in claim 1, characterized in that, The locking component includes a spacer ring and a locking nut. The spacer ring is sleeved on the mounting shaft and abuts against the inner ring of the test bearing. The locking nut is threaded to the mounting shaft and abuts against the spacer ring.

4. The wheel hub bearing life testing device as described in claim 1, characterized in that, The transmission component includes a support frame and a mating component. The support frame is installed on the top of the CNC cabinet body and is rotatably connected to the drive wheel. The mating component is located on the front side of the support frame.

5. The wheel hub bearing life testing device as described in claim 4, characterized in that, The mating components include a fixing plate and a speed-regulating motor. The fixing plate is installed on the top of the CNC cabinet body. The speed-regulating motor is installed on the fixing plate, and its output shaft is connected to the drive wheel through a coupling and electrically connected to the CNC cabinet body.

6. The wheel hub bearing life testing device as described in claim 2, characterized in that, The protective cover is equipped with a CNC panel and a work indicator light. The CNC panel is electrically connected to the main body of the CNC cabinet and is installed on the left rear side of the protective cover. The work indicator light is electrically connected to the main body of the CNC cabinet and is installed on the top of the protective cover.

7. The wheel hub bearing life testing device as described in claim 1, characterized in that, The wheel hub bearing life testing device also includes an isolation assembly, which includes a front side plate and a rear side plate. The front side plate and the rear side plate are respectively detached and installed on both sides of the mounting bracket, and are located outside the first gear and the second gear.

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