Automatic bearing detection device

Abstract

The application discloses a bearing automatic detection device, which comprises a detection seat, a bearing seat is connected to the detection seat through displacement structure, a plurality of inner plug connecting seats are installed on the outer periphery of the bearing seat, a reciprocating hydraulic cylinder which can rotate around the bearing seat is arranged on the detection seat, and a connecting block is arranged on the reciprocating hydraulic cylinder to push the bearing seat to realize multidirectional reciprocating driving detection of the outer ring of a large wind power bearing, in the detection process, the problems of detection posture deviation and uneven stress can be effectively avoided, thereby vibration simulation detection of the outer ring of the large wind power bearing can be realized in multidirectional angles, through cooperation of the first electromagnet plate and the second electromagnet plate, controllable magnetic pushing force can be formed at different positions of the bearing seat, an inclination angle of the bearing seat and the internal bearing thereof is formed, and multidirectional vibration loading formed by the reciprocating hydraulic cylinder is superimposed in the inclination angle state, so that the operation condition of the wind power bearing under complex eccentric loading conditions can be more truly simulated, and the authenticity and applicability of simulation detection are improved.

Description

Technical Field

[0001] This invention relates to the field of bearing testing technology, and more specifically, to an automatic bearing testing device. Background Technology

[0002] As a core piece of equipment in the field of new energy power generation, wind turbines have internal bearings that have been in operation for a long time in complex environments with high altitude, heavy loads, and variable operating conditions. They not only need to withstand rotational loads and radial impacts, but also experience multi-directional reciprocating vibrations and tilting loads due to factors such as blade oscillation, tower shaking, and shaft deformation. This makes the bearings prone to fatigue wear and premature failure, which directly affects the operational stability and service life of the wind turbine.

[0003] Currently, traditional bearing testing devices mostly employ single-direction reciprocating excitation or static loading methods, which can only simulate bearing performance under normal operating conditions. They cannot realistically reproduce the complex stress states experienced by wind turbine bearings in actual operation, such as multi-directional reciprocating vibration, outer ring tilt eccentric loading, and inner ring diagonal tilt. Existing equipment generally suffers from defects such as a single drive structure, fixed excitation direction, and difficulty in tilt angle adjustment. Although some devices have vibration simulation functions, they are prone to problems such as insufficient lifting force, reverse resistance from the non-supported side, and easy tilt angle drift under dynamic operating conditions when dealing with large and heavy-duty wind turbine bearings. This results in a large deviation between the test results and the actual operating conditions, making it difficult to meet the high-precision, multi-condition, and automated testing requirements of wind turbine bearings. Therefore, an automatic bearing testing device is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic bearing detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic bearing detection device, comprising a detection base, a bearing housing connected to the detection base via a displacement structure, a bearing placed inside the bearing housing, a reciprocating hydraulic cylinder mounted on the detection base via a movable structure, a connecting block fixedly connected to the output shaft of the reciprocating hydraulic cylinder, and multiple internal connecting seats mounted on the outer periphery of the bearing housing. The connecting block is used to insert into the interior of the internal connecting seats under the push of the reciprocating hydraulic cylinder, pushing the bearing housing to reciprocate in multiple directions to form vibration detection; A magnetic actuation structure is installed on the outside of the bearing housing. The magnetic actuation structure is used to push the bearing housing to tilt, thereby forming an tilt angle detection. An elastic actuation structure is installed on the outside of the magnetic actuation structure. The elastic actuation structure is used to assist the magnetic actuation structure in forming an angle with the bearing seat.

[0006] Preferably, the magnetic actuation structure includes a first electromagnet plate, which is fixedly connected to the bottom of the inner connector. A plurality of second electromagnet plates are installed on the detection seat. The plurality of second electromagnet plates are used to form a magnetic driving force with the plurality of first electromagnet plates, thereby pushing the bearing seat and the bearing inside the bearing seat to form an tilt angle, thereby forming tilt angle vibration detection.

[0007] Preferably, the elastic pushing structure includes multiple spring plates, the bottom of which is fixedly connected to the second electromagnet plate, and the top of which abuts against the lower surface of the first electromagnet plate. The spring plates are used to assist the magnetic repulsion or attraction between the first and second electromagnet plates through their own elasticity.

[0008] Preferably, a second electromagnet pusher is fixedly connected to the outer wall of the spring plate, a first electromagnet pusher is fixedly connected to the bottom of the first electromagnet plate, an elastic membrane is fixedly connected to the top of the spring plate, and the side of the elastic membrane away from the spring plate is fixedly connected to the lower surface of the first electromagnet plate.

[0009] Preferably, the moving structure includes an annular groove formed on the upper surface of the detection seat. A T-shaped sliding seat is slidably connected inside the annular groove. An mounting plate is mounted on the top of the T-shaped sliding seat. A drive motor is fixedly connected to the mounting plate. A drive wheel is fixedly connected to the output shaft of the drive motor. The drive wheel is used to conform to the upper surface of the detection seat, thereby pushing the mounting plate to rotate around the bearing seat on the detection seat. A positioning seat is fixedly connected to the mounting plate. The reciprocating hydraulic cylinder is installed inside the positioning seat.

[0010] Preferably, a central push rod is rotatably connected at the center of the detection seat and the bearing seat. A universal joint is fixedly connected to the bottom of the central push rod. A support column is fixedly connected to the end of the universal joint away from the central push rod. The bottom of the support column is rotatably connected to the inner bottom wall of the detection seat. A driving bevel gear is fixedly connected to the outside of the support column. A rotary motor is fixedly connected to the inner bottom wall of the detection seat. A driven bevel gear is fixedly connected to the output shaft of the rotary motor. The driven bevel gear meshes with the driving bevel gear. The rotary motor is used to drive the central push rod to rotate in conjunction with the driving bevel gear, the driven bevel gear, and the universal joint. The inner ring of the bearing is sleeved on the outside of the central push rod.

[0011] Preferably, a sealing cover is installed on the bearing housing, and multiple upward-pushing hydraulic cylinders are installed on the sealing cover. An upper arc-shaped push plate is installed on the output shaft of the upper-pushing hydraulic cylinder. The upper-pushing hydraulic cylinder is used to drive the upper arc-shaped push plate to push the central push rod, thereby causing the central push rod to squeeze the inner ring of the bearing to generate an inclination angle, forming a state for inner ring inclination angle detection.

[0012] Preferably, the inner top wall of the detection seat is fixedly connected to multiple downward pushing hydraulic cylinders, and the output shaft of the downward pushing hydraulic cylinder is fixedly connected to a lower arc-shaped push plate. The downward pushing hydraulic cylinder is used to drive the lower arc-shaped push plate to push the bottom outer wall surface of the central push rod, thereby cooperating with the upper pushing hydraulic cylinder and the upper arc-shaped push plate to push the central push rod to form a diagonal tilt state, thereby forming a diagonal tilt detection of the bearing inner ring. The outer wall surfaces of the upper arc-shaped push plate and the lower arc-shaped push plate near the central push rod are rotatably connected to universal balls.

[0013] Preferably, the displacement structure includes a high-elasticity rubber block, which is fixedly connected to the detection seat. Multiple reciprocating springs are fixedly connected inside the high-elasticity rubber block. The tops of the reciprocating springs and the high-elasticity rubber block are fixedly connected to the bottom of the bearing seat, and the bottoms of the high-elasticity rubber block and the reciprocating springs are fixedly connected to the upper surface of the detection seat.

[0014] Preferably, the connecting block is externally mounted with multiple inner insert rods via springs. The inner sidewall of the inner insert connector has an inner insert groove that mates with the inner insert rod. A reverse pushing electromagnet is fixedly connected to the inner wall of the inner insert groove. The inner insert rod is used to penetrate into the inner insert groove under the action of the spring, thereby forming a connection with the inner insert connector. This allows the inner insert connector and bearing seat to reciprocate during the reciprocating hydraulic cylinder's pull-back process. The reverse pushing electromagnet is used to generate magnetism when energized to push the inner insert rod out of the inner insert groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, a reciprocating hydraulic cylinder that can rotate around the bearing housing is set on the testing seat and works with a connecting block to push the bearing housing to perform multi-directional reciprocating drive testing on the outer ring of a large wind turbine bearing. During the testing process, problems such as testing posture deviation and uneven force can be effectively avoided, thereby performing vibration simulation testing on the outer ring of the large wind turbine bearing from multiple angles.

[0016] In this invention, by cooperating with the first electromagnet plate and the second electromagnet plate, a controllable magnetic driving force can be formed at different positions of the bearing housing, causing the bearing housing and its internal bearing to tilt. Under the tilted state, the multi-directional vibration loading formed by the reciprocating hydraulic cylinder is superimposed, which can more realistically simulate the operating conditions of wind turbine bearings under complex off-center load conditions, and improve the realism and applicability of the simulation test. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the high-elasticity rubber block and the reciprocating spring in an embodiment of the present invention; Figure 3This is a cross-sectional view of the insert connector in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the detection seat in an embodiment of the present invention; Figure 5 This is a schematic diagram of the upper arc-shaped push plate and the universal ball in an embodiment of the present invention; Figure 6 This is a schematic diagram of the pushed state structure of the spring plate in an embodiment of the present invention; Figure 7 This is a schematic diagram of the T-shaped sliding seat in an embodiment of the present invention.

[0018] In the diagram: 100, Detection seat; 101, Bearing seat; 102, Mounting plate; 103, Positioning seat; 104, Reciprocating hydraulic cylinder; 105, Connecting block; 106, Inner insertion connecting seat; 107, Inner insertion groove; 108, Inner insertion rod; 109, High-elasticity rubber block; 110, Reciprocating spring; 200, First electromagnet plate; 201, Second electromagnet plate; 300, Spring plate; 400, First electromagnet push block; 401, Second electromagnet push block; 402. Elastic membrane; 500, T-shaped sliding seat; 501, drive motor; 502, drive wheel; 503, annular groove; 600, central push rod; 601, universal joint; 602, support column; 603, driving bevel gear; 604, rotary motor; 605, driven bevel gear; 700, upper push hydraulic cylinder; 701, upper arc-shaped push plate; 702, universal ball; 800, reverse push electromagnet; 900, lower push hydraulic cylinder; 901, lower arc-shaped push plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, such as Figures 1 to 7 As shown, this embodiment provides an automatic bearing detection device, including a detection base 100. A bearing housing 101 is connected to the detection base 100 via a displacement structure. The bearing is placed inside the bearing housing 101. A reciprocating hydraulic cylinder 104 is mounted on the detection base 100 via a moving structure. A connecting block 105 is fixedly connected to the output shaft of the reciprocating hydraulic cylinder 104. A plurality of internal connecting seats 106 are installed on the outer periphery of the bearing housing 101. The connecting block 105 is used to insert into the interior of the internal connecting seat 106 under the push of the reciprocating hydraulic cylinder 104, thereby pushing the bearing housing 101 to reciprocate in multiple directions to form vibration detection. A magnetic actuation structure is installed on the outside of the bearing housing 101. The magnetic actuation structure is used to push the bearing housing 101 to tilt, thereby forming an tilt angle detection. An elastic actuation structure is mounted on the outside of the magnetic actuation structure. The elastic actuation structure is used to assist the magnetic actuation structure in forming an angle with the bearing housing 101.

[0021] In this embodiment, the testing seat 100 supports the entire testing structure, and the bearing housing 101 supports and limits the outer ring of the bearing under test. During use, the operator first places the bearing under test into the bearing housing 101 to stabilize the outer ring. Then, external forces in different directions are applied to the bearing housing 101 to simulate the multi-directional reciprocating vibration and tilting load experienced by the wind turbine bearing under actual operating conditions. Wind turbine bearings are typically large and heavy; if the outer ring is not stabilized before testing, unstable testing posture and inaccurate force application can easily occur during subsequent vibration or tilting simulations.

[0022] like Figure 2 As shown, the displacement structure includes a high-elasticity rubber block 109, which is fixedly connected to the detection seat 100. Multiple reciprocating springs 110 are fixedly connected inside the high-elasticity rubber block 109. The tops of the reciprocating springs 110 and the high-elasticity rubber block 109 are fixedly connected to the bottom of the bearing seat 101, and the bottoms of the high-elasticity rubber block 109 and the reciprocating springs 110 are fixedly connected to the upper surface of the detection seat 100.

[0023] Specifically, during use, the high-elasticity rubber block 109 and the reciprocating spring 110 provide an elastic support base for the bearing housing 101, so that the bearing housing 101 is not rigidly fixed on the detection seat 100, but can generate controllable displacement and rebound under the action of external force.

[0024] like Figures 1-7 As shown, the moving structure includes an annular groove 503, which is formed on the upper surface of the detection seat 100. A T-shaped sliding seat 500 is slidably connected inside the annular groove 503. A positioning seat 103 is mounted on the mounting plate 102. The top of the T-shaped sliding seat 500 is mounted on the bottom of the mounting plate 102. A drive motor 501 is fixedly connected to the mounting plate 102. A drive wheel 502 is fixedly connected to the output shaft of the drive motor 501. The drive wheel 502 is in contact with the upper surface of the detection seat 100. A positioning seat 103 is fixedly connected to the mounting plate 102. A reciprocating hydraulic cylinder 104 is installed inside the positioning seat 103.

[0025] Specifically, during operation, the operator can first start the drive motor 501. The rotation of the drive motor 501 causes the drive wheel 502 to roll against the upper surface of the detection seat 100, thereby causing the mounting plate 102 to rotate around the bearing seat 101 along the annular groove 503. The T-shaped sliding seat 500 acts as a guide and limiter in the annular groove 503, ensuring that the mounting plate 102 moves smoothly along the preset trajectory and is not prone to swaying or detachment.

[0026] Furthermore, during use, the reciprocating hydraulic cylinder 104 can rotate around the bearing seat 101 to different positions following the mounting plate 102. When the operator needs to test the force in a certain direction, he can simply rotate the reciprocating hydraulic cylinder 104 to the corresponding direction, thereby realizing multi-directional vibration simulation, making it more flexible to use and more in line with the actual situation of complex forces on wind turbine bearings.

[0027] like Figures 3-7 As shown, multiple inner insertion rods 108 are installed on the outside of the connecting block 105 by springs. The inner side wall of the inner insertion connector 106 is provided with an inner insertion groove 107 that cooperates with the inner insertion rods 108. A reverse pushing electromagnet 800 is fixedly connected to the inner wall of the inner insertion groove 107.

[0028] Specifically, during use, after the operator rotates the reciprocating hydraulic cylinder 104 to the designated position, the reciprocating hydraulic cylinder 104 pushes the connecting block 105 to move toward the corresponding inner insertion connecting seat 106. Multiple inner insertion rods 108 are automatically inserted into the inner insertion slot 107 under the action of the spring, and the connecting block 105 is then connected with the inner insertion connecting seat 106 in that direction. In this way, when the reciprocating hydraulic cylinder 104 pushes forward, it can push the bearing seat 101 to move in that direction. When it pulls back, since the connection still exists, it can pull the bearing seat 101 back, thus realizing reciprocating motion. After the test is completed, the connecting block 105 and the inner insertion connecting seat 106 need to be separated. That is, after the operator completes the test in one direction, it needs to switch to another direction to continue the test. At this time, it is only necessary to energize the reverse pushing electromagnet 800 so that the reverse pushing electromagnet 800 and the inner insertion rod 108 generate a magnetic repulsive force, which can push the inner insertion rod 108 back into the interior of the connecting block 105. The inner insertion rod 108 can be set as a column with a magnetic block inside, so that the inner insertion rod 108 can be pushed out of the inner insertion slot 107, so that the connecting block 105 can be quickly disengaged from the current inner insertion connecting seat 106 without manual disassembly and assembly. The direction switching is more convenient and the degree of automation is higher.

[0029] Furthermore, multiple inner connecting seats 106 are arranged on the outer periphery of the bearing housing 101, and the multiple inner connecting seats 106 are distributed at intervals along the circumference. With this arrangement, the staff can select different directions to apply load as needed, so that the reciprocating hydraulic cylinder 104 can push the bearing housing 101 in different directions, which can simulate the multi-directional vibration conditions that wind turbine bearings are subjected to under different wind directions, different eccentric loads, and different structural deformation states.

[0030] Specifically, during the testing process, the staff hoisted the large bearing into the bearing housing 101. By starting the drive motor 501, the mounting plate 102 and the reciprocating hydraulic cylinder 104 were moved to the desired position. Then, the connecting block 105 was connected to the inner connecting seat 106 at that position. Finally, the reciprocating hydraulic cylinder 104 was activated to drive the bearing housing 101 in a push-pull reciprocating motion. Because the bottom of the bearing housing 101 is supported by a high-elasticity rubber block 109 and a reciprocating spring 110, the bearing housing 101 can generate a relatively realistic vibration response when subjected to force. After testing one direction, the connection was disengaged by using a reverse-push electromagnet 800, and the testing was switched to the next direction.

[0031] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, by setting a reciprocating hydraulic cylinder 104 that can rotate around the bearing seat 101 on the detection seat 100 and cooperating with the connecting block 105 to push the bearing seat 101 to perform multi-directional reciprocating drive detection on the outer ring of the large wind turbine bearing, problems such as detection posture deviation and uneven force can be effectively avoided during the detection process, thereby performing vibration simulation detection on the outer ring of the large wind turbine bearing in multiple directions.

[0032] Example 2: Considering that during the testing process, external forces not only cause continuous multi-directional vibration of the wind turbine bearing during use, but also cause the bearing to tilt during rotation, the superposition of tilting and vibration may cause additional operating conditions for the bearing. To address the above technical problems, this application proposes the following technical solution: like Figures 1 to 6 As shown, the magnetic actuation structure includes a first electromagnet plate 200, which is fixedly connected to the bottom of the inner connector 106. A plurality of second electromagnet plates 201 are installed on the detection seat 100. The plurality of second electromagnet plates 201 are used to form a magnetic driving force with the plurality of first electromagnet plates 200, thereby pushing the bearing seat 101 and the bearing inside the bearing seat 101 to form an tilt angle, thereby forming tilt angle vibration detection.

[0033] Specifically, in actual use, operators encounter the following problem: simply subjecting the bearing housing 101 to multi-directional reciprocating vibration within a plane can simulate some working conditions, but it is still insufficient to reflect the tilting stress state of the wind turbine bearing during actual operation due to tower swaying, shaft deformation, installation errors, and off-center loading. In other words, in real working conditions, the bearing will not only be "pushed around," but may also experience situations where "one side is lifted" or "one side experiences greater pressure." Based on this technical problem, this embodiment provides a first electromagnet plate 200 at the bottom of the inner connector 106, and multiple second electromagnet plates 201 at corresponding positions on the detection seat 100.

[0034] Specifically, after rotating the reciprocating hydraulic cylinder 104 to a certain detection position, the operator can selectively activate the second electromagnet plate 201 and the first electromagnet plate 200 corresponding to that position. At this time, a magnetic driving force will be formed between the second electromagnet plate 201 and the first electromagnet plate 200 above that position, which will then act on the inner connector 106, and the inner connector 106 will cause a certain local position of the bearing seat 101 to rise or shift. Since the bottom of the bearing seat 101 is not rigidly fixed, but is elastically supported by the high-elasticity rubber block 109 and the reciprocating spring 110, the magnetic driving force will not be directly "locked up", but can be converted into an overall tilt angle change of the bearing seat 101. This can be understood as follows: when the second electromagnet plate 201 and the first electromagnet plate 200 operate in a certain direction, the corresponding side of the bearing housing 101 will be pushed with emphasis, causing the outer ring of the bearing placed inside the bearing housing 101 to tilt. After the tilt angle is formed, the reciprocating hydraulic cylinder 104 pushes and pulls the bearing housing 101, thus simulating the "vibration test condition with tilt angle". Compared with simple horizontal vibration, this is closer to the stress state of wind turbine bearings during actual service, and can provide test result data. Furthermore, since there are multiple second electromagnet plates 201 and first electromagnet plates 200 distributed in different directions, the operator can switch the second electromagnet plates 201 and first electromagnet plates 200 in different directions according to the test requirements, so that the bearing housing 101 forms tilt angles in different directions, thereby realizing the simulation of multi-directional tilt angle working conditions.

[0035] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: Compared with Embodiment 1, in this embodiment, by cooperating with the first electromagnet plate 200 and the second electromagnet plate 201, a controllable magnetic driving force can be formed at different positions of the bearing housing 101, so that the bearing housing 101 and its internal bearing form an inclination angle. In the inclination angle state, the multi-directional vibration loading formed by the reciprocating hydraulic cylinder 104 is superimposed, which can more realistically simulate the operating conditions of wind power bearings under complex off-center load conditions, and improve the authenticity and applicability of the detection.

[0036] Example 3: When inspecting large-size wind turbine bearings, workers encounter a practical problem: these bearings are typically heavy and large in size. If only the magnetic force between the first electromagnet plate 200 and the second electromagnet plate 201 is used to push the bearing housing 101 to form an angle, sometimes the pushing force is insufficient and the angle is not obvious. This is especially noticeable when the bearing is already installed and the overall load is large. To address the above technical problems, this application proposes the following technical solution: like Figures 1 to 6 As shown, the elastic pushing structure includes multiple spring plates 300. The bottom of the spring plate 300 is fixedly connected to the second electromagnet plate 201, and the top of the spring plate 300 abuts against the lower surface of the first electromagnet plate 200. The spring plate 300 is used to assist the magnetic repulsion or attraction force formed between the first electromagnet plate 200 and the second electromagnet plate 201 through its own elasticity.

[0037] Specifically, when the second electromagnet plate 201 in a certain position works and applies a magnetic pushing effect to the first electromagnet plate 200, the spring plate 300 will simultaneously undergo elastic deformation and use its own elastic force to provide auxiliary pushing to the first electromagnet plate 200.

[0038] Furthermore, the spring plate 300 can be understood as an "elastic booster". The magnetic push structure first provides the basic driving force, and the spring plate 300 releases the elastic support force after deformation. The combination of the two can more effectively lift one side of the bearing seat 101, making the tilt angle more obvious and stable.

[0039] Meanwhile, the spring plate 300 also has a buffering effect. Because electromagnetic drive may be sudden when starting and stopping, without a buffering structure, local positions are prone to abrupt lifting or impact, affecting the stability of the test. With the addition of the spring plate 300, the thrust action is more gentle, which can reduce instantaneous impact, is more friendly to the bearing housing 101 and its internal bearings, and is also conducive to improving the consistency of repeated tests.

[0040] The technical solution in the above embodiment three has at least the following technical effects or advantages: Compared with embodiment two, in this embodiment, by setting the spring plate 300, an additional elastic auxiliary force can be provided when the magnetic drive structure is working, which is particularly suitable for tilting and lifting of heavy-duty and large bearings. At the same time, the spring plate 300 can also play a buffer transition role, making the tilting process smoother, reducing harsh impacts, and improving detection stability and reliability.

[0041] Example 4: Considering that during use, for example when the left side needs to be lifted to tilt the bearing seat 101 to the left, the right spring plate 300, due to its own elasticity, may continue to support the right first electromagnet plate 200. This could easily create "reverse resistance" to the left tilt angle, resulting in an insufficient overall tilt angle. To address the above technical problems, this application proposes the following technical solution to solve them: like Figure 6 As shown, a second electromagnet pusher block 401 is fixedly connected to the outer wall of the spring plate 300, a first electromagnet pusher block 400 is fixedly connected to the bottom of the first electromagnet plate 200, and an elastic membrane 402 is fixedly connected to the top of the spring plate 300. The side of the elastic membrane 402 away from the spring plate 300 is fixedly connected to the lower surface of the first electromagnet plate 200.

[0042] Specifically, a second electromagnet pusher 401 is provided on the outer wall of the spring plate 300, and a first electromagnet pusher 400 is provided at the bottom of the first electromagnet plate 200. In this way, when a main push is formed on one side, the first electromagnet pusher 400 and the second electromagnet pusher 401 on the other side can be magnetically pushed to make the spring plate 300 on the non-main force side tend to separate from the first electromagnet plate 200, thereby reducing the reverse support formed by the non-main force side on the tilt angle of the bearing seat 101.

[0043] To put it more simply, when one side needs to be lifted, the other side should be kept as free from lifting force as possible. This makes it easier to form an inclination angle and achieve the desired angle.

[0044] like Figure 6 As shown, the elastic membrane 402 is disposed between the top of the spring plate 300 and the first electromagnet plate 200. Its function is to maintain a flexible connection between the two even if they tend to separate locally under certain working conditions, thus avoiding complete separation and positional misalignment. After the test is completed, the elastic membrane 402 can pull the top of the spring plate 300 back to its original position through its own rebound force. This ensures the effect of reducing support on the non-main force-bearing side and maintains the continuity and stability of the overall structure.

[0045] like Figures 1-5As shown, a central push rod 600 is rotatably connected at the center of the detection seat 100 and the bearing seat 101. A universal joint 601 is fixedly connected to the bottom of the central push rod 600. A support column 602 is fixedly connected to the end of the universal joint 601 away from the central push rod 600. The bottom of the support column 602 is rotatably connected to the inner bottom wall of the detection seat 100. A driving bevel gear 603 is fixedly connected to the outside of the support column 602. A rotary motor 604 is fixedly connected to the inner bottom wall of the detection seat 100. A driven bevel gear 605 is fixedly connected to the output shaft of the rotary motor 604. The driven bevel gear 605 meshes with the driving bevel gear 603. The rotary motor 604 is used to cooperate with the driving bevel gear 603, the driven bevel gear 605 and the universal joint 601 to drive the central push rod 600 to rotate.

[0046] Specifically, under actual working conditions, the inner ring of the bearing is usually in a rotating state. When the inner ring does not rotate, many dynamic force characteristics cannot be properly reflected. Therefore, the driven bevel gear 605, the driving bevel gear 603, and the support column 602 are rotated by the rotary motor 604, which in turn drives the universal joint 601 and the central push rod 600 to rotate. During the rotation of the central push rod 600, the inner ring of the bearing rotates. With the inner ring of the bearing rotating, the universal ball 702 set outside the upper arc-shaped push plate 701 and the lower arc-shaped push plate 901 can maintain smooth rotation while the inner ring of the bearing tilts and deflects, avoiding jamming or distortion of detection data due to rigid friction.

[0047] Furthermore, the reason for setting up the universal joint 601 is that: during the aforementioned outer ring tilt angle detection, the bearing housing 101 may tilt. If the central push rod 600 is completely rigidly connected, it is easy to get stuck in the tilt angle state. After adding the universal joint 601, the central push rod 600 can adapt to angle changes within a certain range while maintaining rotational transmission, thereby ensuring that the inner ring can still rotate stably when the outer ring tilt angle exists.

[0048] like Figures 1-5As shown, a sealing cover is installed on the bearing housing 101, and multiple upward pushing hydraulic cylinders 700 are installed on the sealing cover. An upper arc-shaped push plate 701 is installed on the output shaft of the upper pushing hydraulic cylinder 700. The upper pushing hydraulic cylinder 700 is used to drive the upper arc-shaped push plate 701 to push the central push rod 600, thereby causing the central push rod 600 to squeeze the inner ring of the bearing to produce an inclination angle, forming a state for inner ring inclination angle detection. Multiple downward-pushing hydraulic cylinders 900 are fixedly connected to the inner top wall of the detection seat 100. The output shaft of the downward-pushing hydraulic cylinder 900 is fixedly connected to a lower arc-shaped push plate 901. The downward-pushing hydraulic cylinder 900 is used to drive the lower arc-shaped push plate 901 to push the bottom outer wall surface of the central push rod 600, thereby cooperating with the upper-pushing hydraulic cylinder 700 and the upper arc-shaped push plate 701 to push the central push rod 600 to form a diagonal tilt state, thereby forming a diagonal tilt detection of the bearing inner ring. The upper arc-shaped push plate 701 and the lower arc-shaped push plate 901 are rotatably connected to the outer wall surface near the central push rod 600 with universal balls 702.

[0049] Specifically, during actual testing, if it is necessary to simulate a unilateral biased load on the inner ring, one or more upper push hydraulic cylinders 700 can be activated individually, causing the upper arc-shaped push plate 701 to press against the center push rod 600 from above, causing the center push rod 600 to deflect to one side, thereby causing the bearing inner ring to form an inclination angle. If it is necessary to simulate a more complex diagonal off-center load state, the corresponding lower push hydraulic cylinder 900 can be activated in conjunction, causing the lower arc-shaped push plate 901 to apply force to the center push rod 600 from the other side below. After the hydraulic cylinders in the upper and lower directions work together, the center push rod 600 will form a diagonal tilt state, and correspondingly, the bearing inner ring will be in an off-center load posture that is closer to the actual working condition.

[0050] Furthermore, the upper arc-shaped push plate 701 and the lower arc-shaped push plate 901 are designed to fit more closely to the outer wall of the central push rod 600, avoiding excessive localized force caused by point contact. The universal ball joint 702 is placed at the contact point with the central push rod 600 because the central push rod 600 is often rotating during the testing process. Direct rigid friction pressure would not only result in high friction but also easily lead to jamming and wear. The universal ball joint 702 allows for rolling contact while applying pressure, ensuring smoother movement of the central push rod 600 under combined "rotation and tilting" conditions, improving testing stability and extending component lifespan.

[0051] Furthermore, during the testing of the inner and outer rings, the staff first places the outer ring of the bearing into the bearing housing 101, and then places the inner ring of the bearing around the central push rod 600. Then, according to the testing requirements, the rotary motor 604 is started to rotate the inner ring, and the reciprocating hydraulic cylinder 104 is used to achieve multi-directional vibration of the outer ring. With the help of the magnetic push structure and the elastic push structure, the outer ring is tilted. When it is necessary to further simulate the inner ring off-center load, the upper push hydraulic cylinder 700 and / or the lower push hydraulic cylinder 900 are started to make the central push rod 600 tilt to one side or diagonally. In this way, the composite working condition testing of outer ring vibration, outer ring tilt angle, inner ring rotation and inner ring tilt can be achieved on the same testing equipment.

[0052] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: the cooperation of the first electromagnet pusher 400, the second electromagnet pusher 401 and the elastic membrane 402 can reduce the reverse support formed by the non-main force-bearing side spring plate 300 on the tilt angle, making it easier for the bearing seat 101 to form a significant tilt angle. At the same time, through the cooperation between the active bevel gear 603, the rotary motor 604 and the driven bevel gear 605, the inner ring of the bearing is driven to rotate. When the inner ring of the bearing rotates, through the cooperation between the upper push hydraulic cylinder 700 and the lower push hydraulic cylinder 900, the single-sided tilt angle and diagonal tilt angle detection of the inner ring can be realized, thereby significantly improving the simulation detection capability for complex service conditions of large wind power bearings.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic bearing testing device, comprising a testing base (100), characterized in that: The detection seat (100) is connected to a bearing seat (101) via a displacement structure. The bearing is placed inside the bearing seat (101). A reciprocating hydraulic cylinder (104) is installed on the detection seat (100) via a moving structure. A connecting block (105) is fixedly connected to the output shaft of the reciprocating hydraulic cylinder (104). Multiple inner connecting seats (106) are installed on the outer periphery of the bearing seat (101). The connecting block (105) is used to insert into the inner connecting seat (106) under the push of the reciprocating hydraulic cylinder (104) to push the bearing seat (101) to reciprocate in multiple directions, thereby forming vibration detection. A magnetic actuation structure is installed on the outside of the bearing housing (101). The magnetic actuation structure is used to push the bearing housing (101) to tilt, thereby forming an tilt angle detection. An elastic actuation structure is installed on the outside of the magnetic actuation structure. The elastic actuation structure is used to assist the magnetic actuation structure in forming an inclination angle with the bearing housing (101).

2. The automatic bearing detection device according to claim 1, characterized in that: The magnetic actuation structure includes a first electromagnet plate (200), which is fixedly connected to the bottom of the inner connector (106). A plurality of second electromagnet plates (201) are installed on the detection seat (100). The plurality of second electromagnet plates (201) are used to form a magnetic driving force with the plurality of first electromagnet plates (200), thereby pushing the bearing seat (101) and the bearing inside the bearing seat (101) to form an tilt angle, thereby forming tilt angle vibration detection.

3. The automatic bearing detection device according to claim 2, characterized in that: The elastic pushing structure includes multiple spring plates (300), the bottom of which is fixedly connected to the second electromagnet plate (201), and the top of which abuts against the lower surface of the first electromagnet plate (200). The spring plates (300) are used to assist the magnetic repulsion or attraction between the first electromagnet plate (200) and the second electromagnet plate (201) through their own elasticity.

4. The automatic bearing detection device according to claim 3, characterized in that: A second electromagnet pusher block (401) is fixedly connected to the outer wall of the spring plate (300), a first electromagnet pusher block (400) is fixedly connected to the bottom of the first electromagnet plate (200), an elastic membrane (402) is fixedly connected to the top of the spring plate (300), and the side of the elastic membrane (402) away from the spring plate (300) is fixedly connected to the lower surface of the first electromagnet plate (200).

5. The automatic bearing detection device according to claim 4, characterized in that: The moving structure includes an annular groove (503) which is formed on the upper surface of the detection seat (100). A T-shaped sliding seat (500) is slidably connected inside the annular groove (503). An mounting plate (102) is mounted on the top of the T-shaped sliding seat (500). A drive motor (501) is fixedly connected to the mounting plate (102). A drive wheel (502) is fixedly connected to the output shaft of the drive motor (501). The drive wheel (502) is used to fit against the upper surface of the detection seat (100) to push the mounting plate (102) to rotate around the bearing seat (101) on the detection seat (100). A positioning seat (103) is fixedly connected to the mounting plate (102). A reciprocating hydraulic cylinder (104) is installed inside the positioning seat (103).

6. The automatic bearing detection device according to claim 1, characterized in that: A central push rod (600) is rotatably connected at the center of the detection seat (100) and the bearing seat (101). A universal joint (601) is fixedly connected to the bottom of the central push rod (600). A support column (602) is fixedly connected to the end of the universal joint (601) away from the central push rod (600). The bottom of the support column (602) is rotatably connected to the inner bottom wall of the detection seat (100). A drive bevel gear (603) is fixedly connected to the outside of the support column (602). A rotary motor (604) is fixedly connected to the inner bottom wall of the detection seat (100). The output shaft of the rotary motor (604) is fixedly connected to a driven bevel gear (605). The driven bevel gear (605) meshes with the driving bevel gear (603). The rotary motor (604) is used to cooperate with the driving bevel gear (603), the driven bevel gear (605) and the universal joint (601) to drive the central push rod (600) to rotate. The inner ring of the bearing is sleeved on the outside of the central push rod (600).

7. The automatic bearing detection device according to claim 1, characterized in that: A sealing cover is installed on the bearing housing (101), and multiple upper push hydraulic cylinders (700) are installed on the sealing cover. An upper arc-shaped push plate (701) is installed on the output shaft of the upper push hydraulic cylinder (700). The upper push hydraulic cylinder (700) is used to drive the upper arc-shaped push plate (701) to push the central push rod (600), thereby causing the central push rod (600) to squeeze the inner ring of the bearing to generate an inclination angle, forming a state for inner ring inclination angle detection.

8. The automatic bearing detection device according to claim 1, characterized in that: Multiple downward-pushing hydraulic cylinders (900) are fixedly connected to the inner top wall of the detection seat (100). The output shaft of the downward-pushing hydraulic cylinder (900) is fixedly connected to a lower arc-shaped push plate (901). The downward-pushing hydraulic cylinder (900) is used to drive the lower arc-shaped push plate (901) to push the bottom outer wall of the central push rod (600), thereby cooperating with the upper-pushing hydraulic cylinder (700) and the upper arc-shaped push plate (701) to push the central push rod (600) to form a diagonal tilt state, thereby forming a diagonal tilt detection of the bearing inner ring. The upper arc-shaped push plate (701) and the lower arc-shaped push plate (901) are both rotatably connected to universal balls (702) near the outer wall of the central push rod (600).

9. The automatic bearing detection device according to claim 1, characterized in that: The displacement structure includes a high-elasticity rubber block (109), which is fixedly connected to the detection seat (100). Multiple reciprocating springs (110) are fixedly connected inside the high-elasticity rubber block (109). The tops of the reciprocating springs (110) and the high-elasticity rubber block (109) are fixedly connected to the bottom of the bearing seat (101), and the bottoms of the high-elasticity rubber block (109) and the reciprocating springs (110) are fixedly connected to the upper surface of the detection seat (100).

10. The automatic bearing detection device according to claim 1, characterized in that: Multiple inner rods (108) are installed on the outside of the connecting block (105) by springs. The inner side wall of the inner connecting seat (106) is provided with an inner insertion groove (107) that cooperates with the inner rod (108). A reverse pushing electromagnet (800) is fixedly connected to the inner wall of the inner insertion groove (107). The inner rod (108) is used to penetrate into the inner insertion groove (107) under the drive of the spring, thereby forming a connection with the inner connecting seat (106). This allows the inner connecting seat (106) and the bearing seat (101) to reciprocate during the reciprocating hydraulic cylinder (104) pull-back process. The reverse pushing electromagnet (800) is used to generate magnetism when energized to push the inner rod (108) out of the inner insertion groove (107).

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