A wind turbine bearing test device

Abstract

The present invention relates to the technical field of wind turbine bearing testing, and more specifically, to a testing device for wind turbine bearings. The device frame includes a stand and a base, a support mechanism is movably provided on the top of the base, a side of the support mechanism close to the stand is connected to a displacement mechanism, and a fixed plate is provided inside with a mechanism that can drive the wind turbine bearing body to be tested. The present invention allows the inner ring of the wind turbine bearing body to form a relative motion with the outer ring when the wind turbine bearing body is swung driven by the test mechanism, thereby testing the internal lubricity of the wind turbine bearing body. During the swinging process of the wind turbine bearing body, the surface of the wind turbine bearing body will rub against the fitting arm of the clamp arm assembly, thereby achieving the effect of testing the surface friction of the wind turbine bearing body, which not only reduces the time and cost of the test, but also improves the comprehensiveness and accuracy of the test.

Description

Technical Field

[0001] The invention relates to the technical field of wind power bearing testing, and in particular to a testing device for wind power bearings. Background Art

[0002] As a clean and renewable energy, wind energy plays an increasingly important role in the global energy structure. Wind power generation uses wind power to drive the wind turbine blades to rotate, and then increases the speed of rotation through a speed increaser to drive the generator to generate electricity. Wind power bearings are key components in wind turbine generator sets. They are used to support the main shaft of the wind turbine and bear the radial and axial loads from the wind wheel.

[0003] Since wind power generation equipment is usually installed in outdoor environments with harsh working conditions, wind power bearings need to have high reliability, long life and good load-bearing capacity. In order to ensure the stable performance of wind power bearings during long-term operation, they need to be strictly tested. The tests usually cover lubricity tests and outer wall friction tests. Among them, internal lubricity tests are crucial for evaluating the working status and life of wind power bearings. When conducting internal lubricity tests, the swing test method is usually used to observe the rotation of the inner ring of the bearing to achieve the effect of lubricity detection;

[0004] However, in order to facilitate observation and measurement and reduce ground interference, the wind turbine bearing needs to be lifted to a certain height for testing. Since the wind turbine bearing is relatively large in size, it is easy to be lifted unstable during the lifting process. When testing the wind turbine bearing, the support rod needs to be inserted into the mounting hole of the outer ring of the wind turbine bearing. If the wind turbine bearing is lifted unstable and shakes during lifting, it will affect the installation accuracy and stability of the wind turbine bearing test to a certain extent, and then cause deviations in the matching between the support rod and the mounting hole, affecting the transmission of power and the accuracy of the test results. In addition, the current testing method is usually to test the lubricity of the wind turbine bearing and then re-test the friction of the outer ring surface of the wind turbine bearing. This step-by-step testing method not only prolongs the entire testing cycle, but also requires more manpower and material resources for operation, recording and data analysis.

[0005] In view of this, we propose a test device for wind turbine bearings. Summary of the invention

[0006] The purpose of the present invention is to provide a test device for wind turbine bearings to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides a test device for a wind turbine bearing, comprising a device frame body, the device frame body comprising a stand and a base, the stand is fixedly connected to the middle of the top of the base, a middle cavity is opened in the middle of the stand, a fixing plate is fixedly connected to the upper end of the middle cavity, and an adjustment cavity is formed between the fixing plate and the bottom of the inner cavity of the middle cavity;

[0008] A support mechanism for supporting the wind power bearing body is movably provided on the top of the base, a plurality of mounting holes are provided on the surface of the wind power bearing body, a side of the support mechanism close to the stand is connected to a shift mechanism, the other end of the shift mechanism is located inside the adjustment cavity, and a test mechanism capable of driving the wind power bearing body for testing is provided inside the fixed plate;

[0009] The support mechanism includes a clamping arm assembly. When the shifting mechanism drives the support mechanism to lift, the clamping arm assembly can provide clamping support for the wind turbine bearing body. When the testing mechanism drives the wind turbine bearing body to swing, the lubricity inside the wind turbine bearing body can be detected. At the same time, during the swinging process of the wind turbine bearing body, its surface rubs against the clamping arm assembly, so the friction of the outer wall of the wind turbine bearing body can be detected.

[0010] As a further improvement of the present technical solution, the support mechanism also includes a support platform located at the top of the base, and two side wall plates are fixedly connected to both ends of the top of the support platform, a support cavity is formed between the two side wall plates, and two clamping arm assemblies are provided, which are respectively connected to the two side wall plates.

[0011] As a further improvement of the present technical solution, the clamp arm assembly includes an inner hole opened on the side wall plate close to the support cavity, a telescopic rod is fixedly installed inside the inner hole, and a fitting arm is fixedly connected to one end of the telescopic rod away from the inner hole, and the cross-section of the fitting arm is an arc shape.

[0012] As a further improvement of the technical solution, the shifting mechanism includes two screw rods rotatably arranged inside the adjusting cavity, a slide plate is fixedly connected to the side of the support platform close to the stand, an end of the slide plate away from the support platform is movably connected to the surface of the screw rod, two limit plates are fixedly connected to the surface of the stand, the surfaces of the two limit plates are slidably engaged with limit clamps, and the two limit clamps are fixedly connected to the surface of the support platform.

[0013] As a further improvement of the technical solution, the testing mechanism includes an inner platform opened inside the fixed plate, one end of the fixed plate away from the limit plate is fixedly connected to an extension plate, and the other end of the extension plate extends out of the surface of the stand, the inside of the extension plate is fixedly connected to a cylinder, the end of the piston rod of the cylinder is fixedly connected to a pull plate, and the side of the pull plate away from the cylinder is connected to the rotating member;

[0014] The rotating part includes an arc table, and a middle hole is opened at one end of the fixed plate away from the extension table, and the inner wall size of the middle hole is larger than the arc table. The arc table is connected to the pull plate through a reinforced rotating shaft, and three flower rods are installed at one end of the arc table away from the reinforced rotating shaft. The three flower rods are respectively inserted into the three mounting holes on the upper end of the wind power bearing body, and can drive the wind power bearing body for testing.

[0015] As a further improvement of the technical solution, the bottom ends of the two fitting arms are fixedly connected with extension guide plates, and the surfaces of the two extension guide plates are both in an arc-shaped state.

[0016] As a further improvement of the technical solution, one end of the three flower rods away from the arc platform is fixedly connected with a tapered angle, and the tapered angle is used to improve the insertion accuracy between the flower rod and the installation hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the test device of the wind turbine bearing, the wind turbine bearing body is placed inside the support mechanism and supported laterally by means of the clamp arm assembly. In this way, when the wind turbine bearing body is lifted and installed by means of the shifting mechanism, the lifting stability of the wind turbine bearing body can be improved, and the accidental risks caused by shaking or imbalance can be effectively reduced, providing reliable protection for the installation process;

[0019] 2. In the test device for the wind turbine bearing, the installation position of the wind turbine bearing body can be accurately fixed by stably supporting the wind turbine bearing body, so that the rotating parts of the test mechanism can be more smoothly connected to the installation holes on the wind turbine bearing body, reducing the adjustment time and difficulty during the installation process and improving the installation efficiency;

[0020] 3. In the test device of the wind turbine bearing, when the wind turbine bearing body swings under the drive of the test mechanism, if the lubricity of the wind turbine bearing is qualified, the inner and outer rings of the wind turbine bearing body are in an active state, and the effect of testing the internal lubricity of the wind turbine bearing body is achieved by observing the position of the inner ring. During the swinging process of the wind turbine bearing body, the surface of the wind turbine bearing body will rub against the fitting arm of the clamp arm assembly, thereby achieving the effect of testing the friction of the surface of the wind turbine bearing body, which not only reduces the time and cost of the test, but also improves the comprehensiveness and accuracy of the test;

[0021] 4. In the test device of the wind turbine bearing, when the outer ring of the wind turbine bearing body swings, part of its outer wall will rub against the surface of the support platform and the two fitting arms. In this process, specific positions on the surface of the wind turbine bearing body can be polished, which can remove uneven parts or minor flaws on the outer wall of the wind turbine bearing, making the surface of the wind turbine bearing body smoother and flatter, thereby improving the use effect of the wind turbine bearing body;

[0022] 5. In the test device of the wind turbine bearing, when the wind turbine bearing body is installed, the rotating part of the test mechanism needs to be telescopically plugged in. At this time, the starting position of the rotating part can be determined by using the middle hole opened on the surface of the fixed plate. In this way, the rotating part can be kept at zero degrees in the initial state, which is more convenient for plugging and connecting with the mounting hole of the wind turbine bearing, effectively improving the accuracy of the installation of the wind turbine bearing body. In addition, keeping the rotating part at zero degrees can also make subsequent tests more accurate and reliable, and reduce the deviation of test results caused by inaccurate starting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the plug-in installation structure of the wind power bearing body of the present invention;

[0025] Figure 3 It is a schematic diagram of the left-swing test structure of a wind power bearing of the present invention;

[0026] Figure 4 It is a schematic diagram of the right swing test structure of the wind power bearing of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the shifting mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the testing mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the rotating member of the present invention;

[0030] Figure 8 For the present invention Figure 3 Schematic diagram of the structure at point A.

[0031] The meaning of each number in the figure is:

[0032] 1. Device frame; 11. Stand; 12. Middle cavity; 121. Adjustment cavity; 13. Base; 14. Fixing plate; 10. Wind power bearing body; 101. Mounting hole;

[0033] 2. Support mechanism; 21. Support platform; 22. Side wall plate; 23. Clamp arm assembly; 24. Support cavity;

[0034] 231, inner hole; 232, telescopic rod; 233, fitting arm;

[0035] 3. Testing mechanism; 31. Inner table; 32. Rotating part; 321. Flower rod; 322. Arc table; 323. Reinforced rotating shaft; 33. Extended table; 34. Cylinder; 35. Pull plate;

[0036] 4. shifting mechanism; 41. screw rod; 42. slide plate; 43. limit plate; 44. limit clamp;

[0037] 5. Extend the guide plate;

[0038] 6. Cone angle. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] For examples, see Figure 1 , Figure 2 and Figure 3 As shown, the purpose of this embodiment is to provide a test device for a wind power bearing, including a device frame body 1, the device frame body 1 includes a stand 11 and a base 13, the stand 11 is fixedly connected to the middle of the top of the base 13, a middle cavity 12 is provided in the middle of the stand 11, a fixing plate 14 is fixedly connected to the upper end of the middle cavity 12, and an adjustment cavity 121 is formed between the fixing plate 14 and the bottom of the inner cavity of the middle cavity 12; a support mechanism 2 for supporting a wind power bearing body 10 is movably provided at the top of the base 13, a plurality of mounting holes 101 are provided on the surface of the wind power bearing body 10, a side of the support mechanism 2 close to the stand 11 is connected to a displacement mechanism 4, the other end of the displacement mechanism 4 is located inside the adjustment cavity 121, and a test mechanism 3 capable of driving the wind power bearing body 10 for testing is provided inside the fixing plate 14;

[0041] The support mechanism 2 includes a clamping arm assembly 23. When the shifting mechanism 4 drives the support mechanism 2 to lift, the clamping arm assembly 23 can provide clamping support for the wind turbine bearing body 10. When the testing mechanism 3 drives the wind turbine bearing body 10 to swing, the lubricity inside the wind turbine bearing body 10 can be detected. At the same time, during the test, the surface of the wind turbine bearing body 10 rubs against the clamping arm assembly 23, so the friction of the outer wall of the wind turbine bearing body 10 can be detected.

[0042] Since the wind turbine bearing body 10 is relatively larger than ordinary bearings, and in order to facilitate observation and measurement and reduce ground interference, the wind turbine bearing body 10 needs to be lifted to a certain height for testing. Therefore, in order to further improve the lifting stability of the wind turbine bearing body 10, it is necessary to disclose the specific structure of the support mechanism 2. The support mechanism 2 also includes a support platform 21 located on the top of the base 13. Two side wall plates 22 are fixedly connected to both ends of the top of the support platform 21. A support cavity 24 is formed between the two side wall plates 22. Two clamp arm assemblies 23 are provided, which are respectively connected to the two side wall plates 22.

[0043] Combination Figure 2 and Figure 3 As shown, the support platform 21 is located on the top of the base 13, and two side wall plates 22 are fixedly connected to the top of the support platform 21. A support cavity 24 is formed between the two side wall plates 22. When the wind turbine bearing body 10 is placed inside the support cavity 24, it can provide effective auxiliary support for the wind turbine bearing body 10. When the wind turbine bearing body 10 is subjected to a lifting test, the lifting stability of the wind turbine bearing body 10 is improved.

[0044] Even when the wind turbine bearing body 10 is tested, the wind turbine bearing body 10 will still be located inside the support cavity 24. Therefore, the inner diameter of the support cavity 24 will be larger than the size of the wind turbine bearing body 10. In view of this, the wind turbine bearing body 10 needs to be further fixed by the clamping arm assembly 23. The clamping arm assembly 23 includes an inner hole 231 opened on the side of the side wall plate 22 close to the support cavity 24. A telescopic rod 232 is fixedly installed inside the inner hole 231. The end of the telescopic rod 232 away from the inner hole 231 is fixedly connected to a fitting arm 233, and the cross-section of the fitting arm 233 is an arc shape.

[0045] See also Figure 1 Combined with Figure 5 It can be seen that after the wind power bearing body 10 is placed inside the support cavity 24, the wind power bearing body 10 can be further fixed by means of the telescopic rod 232 installed inside the side wall plate 22 and the fitting arm 233 fixedly connected to the end of the telescopic rod 232, so as to limit and support the wind power bearing body 10, thereby reducing its shaking or deviation during the lifting process. At the same time, the fitting arm 233 and the support platform 21 support at the same time, which helps to evenly distribute the weight of the wind power bearing body 10;

[0046] Since the position of the fixing plate 14 is fixed, when the wind turbine bearing body 10 is placed on the surface of the support platform 21, the position of the mounting hole 101 of the wind turbine bearing body 10 can be determined first. During the lifting process, the telescopic rod 232 and the fitting arm 233 can be used to keep the wind turbine bearing body 10 in a relatively static position for lifting, which makes it easier to connect the wind turbine bearing body 10 to the test mechanism 3.

[0047] Then, the specific structure of the shifting mechanism 4 is disclosed. The shifting mechanism 4 includes two screw rods 41 rotatably arranged inside the adjusting cavity 121, a slide plate 42 is fixedly connected to the side of the support platform 21 close to the stand 11, and one end of the slide plate 42 away from the support platform 21 is movably connected to the surface of the screw rod 41, and two limit plates 43 are fixedly connected to the surface of the stand 11, and the surfaces of the two limit plates 43 are both slidably engaged with limit clamps 44, and the two limit clamps 44 are both fixedly connected to the surface of the support platform 21.

[0048] Depend on Figure 5 It can be seen that the slide plate 42 fixedly connected to the surface of the support platform 21 is slidably sleeved on the surfaces of the two screw rods 41, and the two screw rods 41 rotate inside the adjustment cavity 121. When the wind power bearing body 10 is placed inside the support platform 21 with the help of the two clamp arm assemblies 23, the motor connected to the bottom ends of the two screw rods 41 is started to drive the two screw rods 41 to rotate at the same speed and in the same direction. Due to the effect of the threads on the surface of the screw rods 41, an axial thrust is generated. This thrust enables the slide plate 42 sleeved on its surface to move vertically along the axial direction of the screw rod 41, thereby driving the support platform 21 fixedly connected to the slide plate 42 to move vertically, thereby achieving a lifting effect on the wind power bearing body 10;

[0049] It should be noted that the two screw rods 41 rotating inside the adjusting cavity 121 are exactly the same, including pitch, thread depth, thread profile, diameter, length, and material. A bottom hole (not shown in the figure) is opened at the bottom of the adjusting cavity 121, and a motor coaxially connected to the two screw rods 41 is fixedly connected inside the bottom hole. The two motors are wireless structures and can drive the two screw rods 41 to rotate at the same speed and in the same direction (using existing technology, which will not be repeated here).

[0050] When the wind turbine bearing body 10 is tested, it is necessary to fix the top of the wind turbine bearing body 10, and then drive the wind turbine bearing body 10 to swing left and right along the fixed point. In view of this, the specific structure of the test mechanism 3 is disclosed in combination with the above structure. The test mechanism 3 includes an inner platform 31 opened inside the fixed plate 14, and the end of the fixed plate 14 away from the limit plate 43 is fixedly connected to an extension plate 33, and the other end of the extension plate 33 extends out of the surface of the stand 11, and the extension plate 33 is fixedly connected to the inside of the extension plate 33. The piston rod end of the cylinder 34 is fixedly connected to a pull plate 35, and the pull plate 35 is connected to the rotating member 32 on the side away from the cylinder 34;

[0051] The rotating part 32 includes an arc platform 322. A middle hole is opened at one end of the fixed plate 14 away from the extension platform 33. The inner wall size of the middle hole is larger than the arc platform 322. The arc platform 322 is connected to the pull plate 35 through a reinforcement shaft 323. Three flower rods 321 are installed at one end of the arc platform 322 away from the reinforcement shaft 323. The three flower rods 321 are respectively inserted into the three mounting holes 101 at the upper end of the outer ring of the wind power bearing body 10, and can drive the wind power bearing body 10 to carry out testing.

[0052] See also Figure 7 As shown, when the test device is in an idle state, the cylinder 34 is in a stretched state. At this time, the piston rod inside the cylinder 34 pulls the pull plate 35, and the pull plate 35 further pulls the reinforcement shaft 323, causing the arc platform 322 to shrink inside the inner platform 31, so that the three flower rods 321 can slide toward the stand 11, thereby not affecting the lifting of the wind turbine bearing body 10.

[0053] See Figure 2When the wind power bearing body 10 is lifted until its mounting hole 101 is aligned with the flower rod 321, the cylinder 34 is controlled to start again. At this time, the pull plate 35 can apply thrust to the rotating member 32. When the arc platform 322 pushes out of the fixed plate 14, the three flower rods 321 can be respectively inserted into the three mounting holes 101 on the surface of the wind power bearing body 10. Then, the motor is started to drive the reinforcement shaft 323 fixedly connected to the output shaft of the motor to start, so that the arc platform 322 and the three flower rods 321 rotate accordingly. Because the three flower rods 321 are inserted into the top of the wind power bearing body 10, when the arc platform 322 and the three flower rods 321 swing, the wind power bearing body 10 is in a swinging state. Before the test, an arrow mark pointing downward can be made at the bottom of the inner ring. When the wind turbine bearing body 10 is swung, the outer ring will swing accordingly. If the lubrication performance is qualified, the outer ring will continue to swing, and the strong lubrication will result in less friction. During the entire swinging process, the inner ring will rotate inside the outer ring, so that the mark at the bottom of the inner ring will remain pointing downward. From a visual point of view, if the position of the inner ring mark is stable without abnormal displacement or shaking, it can be determined that the lubrication is good; on the contrary, if the inner ring swings with the outer ring, the arrow mark on the inner ring changes its pointing position, indicating that the bearing has poor lubrication, and the friction between the roller and the raceway is too large, resulting in the inner ring The movement state is affected;

[0054] It should be noted that the swing angle of the reinforcement shaft 323 needs to be less than 180°. Keeping the swing angle of the reinforcement shaft 323 within 180° can further improve the test stability of the wind power bearing body 10 without affecting the test effect.

[0055] See also Figure 3 , Figure 4 and Figure 8 As shown, during the test, the wind turbine bearing body 10 will apply a squeezing force to the fitting arm 233, and then the fitting arm 233 will transmit this squeezing force to the inside of the telescopic rod 232. It is worth noting that the telescopic rod 232 is a damping telescopic structure. When the fitting arm 233 transmits the squeezing force to the inside of the telescopic rod 232, it will drive the telescopic rod 232 to contract. At the same time, the telescopic rod 232 can provide a reverse thrust to the wind turbine bearing body 10. In this way, when the wind turbine bearing body 10 is adjusted left and right for testing, it can rub against the surfaces of the fitting arms 233 on both sides. In this way, the effect of detecting the friction of the outer wall of the wind turbine bearing body 10 is achieved. By utilizing the swinging action of the outer ring of the wind turbine bearing body 10, as well as the damping and telescopic characteristics and reverse thrust of the telescopic rod 232, the friction detection of the outer wall can be carried out during the natural rotation process, thereby improving the efficiency and accuracy of the detection. At the same time, it also provides an important basis for the quality control and performance evaluation of wind turbine bearings.

[0056] It is worth noting that the damping structure of the telescopic rod 232 is usually composed of an internal damping medium and a specific mechanical structure. When the wind turbine bearing body 10 is adjusted to apply an extrusion force to the fitting arm 233, the extrusion force is transmitted to the telescopic rod 232, and the damping medium in the damping structure generates resistance, so that the telescopic rod 232 does not respond quickly, but contracts or extends in a relatively slow and stable manner. On the one hand, this damping structure can buffer the pressure applied by the wind turbine bearing body 10, reduce the impact of the impact force on the clamping system, and improve the stability of the clamping during the lifting or lowering of the wind turbine bearing body 10; on the other hand, when the wind turbine bearing body 10 is rotated and adjusted with the help of the rotating member 32, the damping force will generate reverse resistance and consume part of the energy, providing stable conditions for the friction detection of the outer wall of the wind turbine bearing body 10, ensuring the accuracy and reliability of the detection.

[0057] See also Figure 5 As shown, the middle part of the support platform 21 is a rough structure. When the wind turbine bearing body 10 is tested, the side ends and bottom surfaces of the wind turbine bearing body 10 will fit and rub against the two fitting arms 233 and the top of the support platform 21, thereby achieving the effect of polishing the side ends and bottom ends of the wind turbine bearing body 10;

[0058] The middle part of the support platform 21 has a rough structure. During the test of the wind turbine bearing body 10, its bottom is constantly in contact and friction with the rough surface of the support platform 21. The particles on the rough surface will gradually remove the uneven parts or tiny flaws on the bottom of the wind turbine bearing body 10, making the bottom surface smoother and flatter; during the test of the wind turbine bearing body 10, the surface of the fitting arm 233 is in close contact with the side end of the wind turbine bearing body 10. The friction force can remove the rough part of the side end of the wind turbine bearing body 10, thereby improving the surface quality of the wind turbine bearing body 10 and helping to improve its performance and life in practical applications.

[0059] Depend on Figure 6 and Figure 7 As shown, the size of the arc platform 322 is slightly smaller than the middle hole opened on the surface of the fixed plate 14. In this way, the specific relationship between the size of the arc platform 322 and the middle hole of the fixed plate 14 ensures precise operation under specific conditions. Only when the arc platform 322 is in a specific angle of 0°, can the sliding action from the middle hole be realized. When the arc platform 322 is in the 0° state for sliding adjustment, it is more conducive to determining the sliding position of the flower rod 321. Therefore, the position of the wind turbine bearing body 10 on the support platform 21 can be determined more conveniently, so that the flower rod 321 can be more smoothly inserted into the mounting hole 101.

[0060] Furthermore, the surface of the flower rod 321 is a rough structure, which can increase the friction between the flower rod 321 and the mounting hole 101. This friction force enables the flower rod 321 to be more firmly combined with the mounting hole 101 when driving the outer ring of the wind power bearing body 10 to swing, and it is not easy to slide or loosen. During the test, the flower rod 321 can transmit power more effectively through this large friction force, ensuring that the wind power bearing body 10 can stably rotate following the movement of the flower rod 321;

[0061] The flower rod 321 and the reinforced shaft 323 are preferably made of high-strength alloy steel, which has high strength and hardness and can withstand large loads. At the same time, the alloy steel also has good wear resistance and corrosion resistance, and can provide stable support for the wind turbine bearing body 10.

[0062] Since the wind turbine bearing body 10 is a circular structure, in order to make it easier for the wind turbine bearing body 10 to fit with the surface of the fitting arm 233 when rotating, the bottom ends of the two fitting arms 233 are fixedly connected with extension lead plates 5, and the surfaces of the two extension lead plates 5 are both in an arc state.

[0063] The improvement is: Figure 3 and Figure 4 As shown, the arc-shaped extension lead plate 5 can better guide the wind turbine bearing body 10 to contact the fitting arm 233 when the wind turbine bearing body 10 rotates. When the wind turbine bearing body 10 is swung for testing, its edge will first contact the extension lead plate 5. Since the arc-shaped surface of the extension lead plate 5 matches the circular structure of the wind turbine bearing body 10, it can naturally guide the wind turbine bearing body 10 to move in the direction of the fitting arm 233, so that the wind turbine bearing body 10 can fit the surface of the fitting arm 233 more quickly and accurately, thereby improving the smoothness and stability of the test process.

[0064] When testing the wind turbine bearing body 10, it needs to be installed. It can be seen from the above structure that the wind turbine bearing body 10 is installed by respectively inserting the three flower rods 321 into the three mounting holes 101 on the surface of the wind turbine bearing body 10. In order to further improve the rotation stability of the wind turbine bearing body 10 driven by the flower rod 321, the surface of the flower rod 321 will be set to be in contact with the inner wall of the mounting hole 101. However, although this design improves the test effect, it has a certain impact on the insertion accuracy of the flower rod 321. In view of this, in order to further improve the insertion accuracy between the flower rod 321 and the mounting hole 101, the ends of the three flower rods 321 away from the arc platform 322 are fixedly connected with a tapered angle 6, and the tapered angle 6 is used to improve the insertion accuracy between the flower rod 321 and the mounting hole 101.

[0065] The improvements are: See Figure 6 Combined with Figure 7As shown, when the wind turbine bearing body 10 is lifted to the fixed plate 14 for installation under the drive of the support platform 21, the tapered angle 6 fixedly connected to the end of the flower rod 321 allows the flower rod 321 to be more smoothly aligned with the installation hole 101, thereby reducing deviation and misalignment during the plug-in process. The precise plug-in ensures that the test mechanism 3 can effectively drive the wind turbine bearing body 10 to swing, thereby accurately detecting the lubricity inside the wind turbine bearing body 10 and the friction of the outer wall.

[0066] It is important to note that:

[0067] Figure 1 and Figure 5 The dotted double-sided arrow in represents the stretching direction of the telescopic rod 232;

[0068] Figure 8 The solid arrow in the figure indicates the friction between the wind turbine bearing body 10 and the fitting arm 233;

[0069] Figure 3 and Figure 4 The arc arrow in the figure indicates the rotation direction of the wind power bearing body 10 in the figure;

[0070] Figure 2 The dotted arrow in the figure indicates the moving direction of the wind turbine bearing body 10.

[0071] After performing a test once, the plug-in position can be changed to repeat the test to ensure the accuracy of the test results.

[0072] In summary, the working principle of this solution is as follows: when the wind turbine bearing body 10 needs to be tested, the wind turbine bearing body 10 is placed on the surface of the support platform 21, and the wind turbine bearing body 10 is further fixed by means of the telescopic rod 232 and the fitting arm 233 fixedly connected to the end of the telescopic rod 232. During the installation of the wind turbine bearing body 10, it is necessary to ensure that the rotation positioning point of the wind turbine bearing body 10 is located directly above the wind turbine bearing body 10;

[0073] After the wind turbine bearing body 10 is supported, the motors connected to the bottom ends of the two screw rods 41 are started to drive the two screw rods 41 to rotate at the same speed and in the same direction. Due to the effect of the threads on the surface of the screw rods 41, an axial thrust is generated. This thrust enables the slide plate 42 sleeved on the surface to move vertically along the axial direction of the screw rod 41, thereby driving the support platform 21 fixedly connected to the slide plate 42 to move vertically, thereby achieving a lifting effect on the wind turbine bearing body 10;

[0074] When the wind power bearing body 10 is lifted until its mounting hole 101 is aligned with the flower rod 321, the cylinder 34 is controlled to start again. At this time, the pull plate 35 can apply thrust to the rotating member 32. When the arc platform 322 pushes and slides out of the fixed plate 14, the three flower rods 321 can be respectively inserted into the three mounting holes 101 on the surface of the wind power bearing body 10. Then, the motor is started to drive the reinforcement shaft 323 fixedly connected to the output shaft of the motor to start, so that the arc platform 322 and the three flower rods 321 rotate accordingly. Because the three flower rods 321 are inserted into the top of the wind power bearing body 10, when the arc platform 322 and the three flower rods 321 rotate, the outer ring of the wind power bearing body 10 is in a swinging state;

[0075] When the wind turbine bearing body 10 is adjusted left and right, it will apply a squeezing force to the fitting arm 233, and then the fitting arm 233 will transmit this squeezing force to the inside of the telescopic rod 232. It is worth noting that the telescopic rod 232 is a damping telescopic structure. When the fitting arm 233 transmits the squeezing force to the inside of the telescopic rod 232, it will drive the telescopic rod 232 to contract. At the same time, the telescopic rod 232 can provide a reverse thrust to the wind turbine bearing body 10. In this way, when the wind turbine bearing body 10 is adjusted left and right, it can rub against the surfaces of the fitting arms 233 on both sides. The friction performance can be judged by visually observing whether there are scratches on the outer wall surface of the wind turbine bearing body 10 after friction. In this way, the effect of detecting the friction of the outer wall of the wind turbine bearing body 10 is achieved.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind turbine bearing test device, comprising a device frame (1), wherein the device frame (1) comprises a stand (11) and a base (13), wherein the stand (11) is fixedly connected to the middle of the top end of the base (13), and wherein: A middle cavity (12) is provided in the middle of the stand (11); a fixing plate (14) is fixedly connected to the upper end of the middle cavity (12); an adjustment cavity (121) is formed between the fixing plate (14) and the inner cavity bottom of the middle cavity (12); A support mechanism (2) for supporting the wind power bearing body (10) is movably provided on the top of the base (13); a plurality of mounting holes (101) are provided on the surface of the wind power bearing body (10); a side of the support mechanism (2) close to the stand (11) is connected to a displacement mechanism (4); the other end of the displacement mechanism (4) is located inside the adjustment cavity (121); and a test mechanism (3) capable of driving the wind power bearing body (10) to perform a test is provided inside the fixing plate (14); The support mechanism (2) comprises a clamping arm assembly (23); when the displacement mechanism (4) drives the support mechanism (2) to be lifted, the clamping arm assembly (23) can provide clamping support for the wind turbine bearing body (10); when the testing mechanism (3) drives the wind turbine bearing body (10) to swing, the lubricity inside the wind turbine bearing body (10) can be tested; at the same time, during the swinging process of the wind turbine bearing body (10), its surface is in contact with and rubbed against the clamping arm assembly (23), so that the friction of the outer wall of the wind turbine bearing body (10) can be tested.

2. The wind turbine bearing test device according to claim 1, characterized in that: The support mechanism (2) further comprises a support platform (21) located on the top of the base (13); two side wall plates (22) are fixedly connected to both ends of the top of the support platform (21); a support cavity (24) is formed between the two side wall plates (22); and two clamping arm assemblies (23) are provided, which are respectively connected to the two side wall plates (22).

3. The wind turbine bearing test device according to claim 2, characterized in that: The clamp arm assembly (23) comprises an inner hole (231) formed on a side of the side wall plate (22) close to the support cavity (24); a telescopic rod (232) is fixedly installed inside the inner hole (231); an end of the telescopic rod (232) away from the inner hole (231) is fixedly connected to a fitting arm (233); and the cross section of the fitting arm (233) is in the shape of an arc.

4. The wind turbine bearing test device according to claim 2, characterized in that: The shift mechanism (4) comprises two screw rods (41) rotatably arranged inside the adjustment cavity (121); a slide plate (42) is fixedly connected to a side of the support platform (21) close to the stand (11); an end of the slide plate (42) away from the support platform (21) is movably connected to the surface of the screw rod (41); two limit plates (43) are fixedly connected to the surface of the stand (11); the surfaces of the two limit plates (43) are both slidably engaged with limit clamps (44); and the two limit clamps (44) are fixedly connected to the surface of the support platform (21).

5. The wind turbine bearing test device according to claim 4, characterized in that: The testing mechanism (3) comprises an inner platform (31) opened inside a fixed plate (14); an end of the fixed plate (14) away from the limiting plate (43) is fixedly connected to an extension platform (33), and the other end of the extension platform (33) extends out of the surface of the stand (11); a cylinder (34) is fixedly connected inside the extension platform (33); a pull plate (35) is fixedly connected to the end of the piston rod of the cylinder (34); and a side of the pull plate (35) away from the cylinder (34) is connected to the rotating member (32); The rotating member (32) comprises an arc platform (322); a central hole is formed at one end of the fixed plate (14) away from the extension platform (33); the inner wall of the central hole is larger than the arc platform (322); the arc platform (322) and the pull plate (35) are connected via a reinforcing shaft (323); three flower rods (321) are installed at one end of the arc platform (322) away from the reinforcing shaft (323); the three flower rods (321) are respectively inserted into three mounting holes (101) at the upper end of the wind power bearing body (10), and can drive the wind power bearing body (10) to perform a test.

6. The wind turbine bearing test device according to claim 3, characterized in that: The bottom ends of the two fitting arms (233) are fixedly connected to an extension lead plate (5), and the surfaces of the two extension lead plates (5) are both in an arc-shaped state.

7. The wind turbine bearing test device according to claim 5, characterized in that: One end of each of the three flower rods (321) away from the arc platform (322) is fixedly connected to a tapered angle (6), and the tapered angle (6) is used to improve the plugging accuracy between the flower rod (321) and the mounting hole (101).

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