CN117030254A - Wind power main shaft bearing testing machine and testing method thereof - Google Patents

Abstract

The utility model relates to the technical field of bearing tests, in particular to a wind power main shaft bearing testing machine and a testing method thereof. The wind power main shaft bearing rotation test device comprises a connecting support working underframe, wherein a bearing connecting rotation test assembly is arranged on the surface of the connecting support working underframe, the bearing connecting rotation test assembly is used for carrying out a pressure test on the rotation of a wind power main shaft bearing, a bearing clamping pressure assembly is arranged on the surface of the connecting support working underframe, and the bearing clamping pressure assembly is used for clamping the wind power main shaft bearing and carrying out rotation pressure on the rotation corner of the wind power main shaft bearing; through bearing clamping pressure subassembly and bearing rotation side position pressurization stabilizing assembly pass through bearing diversified pressure test, the wind-force of more truly simulating the bearing in actual operation is from all around to bearing pressure, avoids the test to only exert pressure on one side to can not accurately simulate moreover and become the oar bearing and receive the pressure under the wind load effect when normal operation rotates.

Description

A wind power spindle bearing testing machine and its testing method

Technical field

The present invention relates to the technical field of bearing testing, and specifically to a wind power spindle bearing testing machine and a testing method thereof.

Background technique

At present, the wind power market is developing rapidly, and wind power spindle bearings are an essential product in the wind power market. Before wind power spindle bearings leave the factory, customers have strict technical requirements for various indicators of the product. The requirements are for different types and specifications of bearing products, and various hard indicators such as: axial and radial loading, automatic temperature measurement, and vibration measurement. , there are clear requirements for speed measurement, speed change, load change, forward and reverse rotation and other parameters.

For bearing testing machines, there are many existing technologies, such as:

Chinese Patent Publication No. CN201903447U discloses a wind power spindle bearing testing machine related to the field of bearing product performance testing. The testing machine includes a radial cylinder loading part, an upper box part, a workpiece shaft part, a lower box part, and an axial cylinder loading part. In the belt transmission part of the reducer, the axial cylinder loading force Fa directly acts on the axial gland (force transmission) → bearing sheath → tooling gland → pressure plate → end face of the outer ring of the test bearing. When Fa acts on the end surface of the outer ring of the test bearing, the radial cylinder starts to work, and the radial loading force Fr acts directly on the upper surface of the radial sheath, and directly acts on the test bearing through indirect force transmission. The utility model can realize the detection of multi-type and multi-standard products; it can realize simultaneous loading in both axial and radial directions, ensuring the reliability of the product; it has a compact structure, small floor space, convenient maintenance and beautiful appearance.

It can be seen that the stiffness of the pitch bearing needs to be tested before it leaves the factory. Nowadays, wind power pitch bearing testing machines are mostly used. When testing batches of pitch bearings, the existing testing machines test the pitch bearings in a static state. A fixed pressure is applied to the surface of the propeller bearing, and then the deformation of the pitch bearing surface is measured. If the deformation is less than the normal deformation threshold range, it proves that the stiffness of the pitch bearing is qualified. However, in the actual operation of the bearing, the wind force affects the bearing from all directions. The test only applies pressure to one side, and cannot accurately simulate the pressure of the pitch bearing under wind load during normal operation. At the same time, when testing the bearing, unqualified bearings may vibrate. This will cause the testing machine to shift, causing collisions between the testing machine and the bearings, causing damage to the testing machine.

In view of this, the utility model provides a wind power spindle bearing testing machine and a testing method thereof.

Contents of the invention

The purpose of the present invention is to provide a wind power spindle bearing testing machine and its testing method to solve the problems raised in the above background technology.

In order to achieve the above object, one of the objects of the present invention is to provide a wind power spindle bearing testing machine, which includes a connection support working chassis. The surface of the connection support working chassis is provided with a bearing connection rotation test assembly, and the bearing connection rotation test assembly is provided. The test assembly is used to perform a pressure test on the rotation of the wind power main shaft bearing. The surface of the connecting support working chassis is provided with a bearing clamping and pressure exerting assembly. The bearing clamping and pressure exerting assembly is used to clamp the wind power main shaft bearing, and Rotational pressure is applied to the rotating corners of the wind power main shaft bearing. The surface of the connecting support working chassis is provided with a bearing rotation side azimuth pressure stabilization component. The bearing rotation side azimuth pressure stabilization component is used to stabilize the wind power main shaft bearing during rotation. During the process, a pressure test was performed on its cross-section. At the same time, the elastic force assisted the wind power spindle bearing to be clamped on the surface of the bearing clamping pressure component to correct the wind power spindle bearing offset, and the bearing rotation side azimuth pressure stabilization component drove the bearing connection. The rotating test assembly moves so that the bearing-connected rotating test assembly moves laterally and contacts the wind turbine main shaft bearing for testing.

As a further improvement of this technical solution, the bearing connection rotation test assembly includes a work frame. The work frame is installed on the surface of the connection support working bottom frame. A first threaded rod is rotatably connected inside the work frame. The surface of the work frame A first motor for driving the first threaded rod to rotate is installed.

As a further improvement of this technical solution, a connecting frame is threadedly connected to the surface of the first threaded rod, a second threaded rod is rotatably connected to the inside of the connecting frame, and a third threaded rod for driving the second threaded rod to rotate is installed on the surface of the connecting frame. Two motors, a moving block is threadedly connected to the surface of the second threaded rod.

As a further improvement of this technical solution, the moving block and the connecting frame are slidingly connected to limit the moving path of the moving block, and a rotating test motor is installed on the surface of the moving block.

As a further improvement of this technical solution, the bearing clamping and pressure applying assembly includes a fixed frame, the fixed frame is installed on the surface of the connecting support working bottom frame, and first clamping frames are provided on both left and right sides of the fixed frame, so A hydraulic cylinder for driving the first clamping frame to move laterally is installed on the surface of the fixed frame.

As a further improvement of this technical solution, a second clamping frame is provided on the surface of the fixed frame, and screws are provided on the surface of the first clamping frame. The second clamping frame and the first clamping frame are fixedly connected by screws. , the surfaces of the first clamping frame and the second clamping frame are both rotatably connected with rotating rollers.

As a further improvement of this technical solution, pressure applicators for applying pressure to the wind turbine main shaft bearing are installed on the surfaces of the first clamping frame and the second clamping frame.

As a further improvement of this technical solution, the bearing rotation side azimuth pressure stabilization assembly includes a third threaded rod, the third threaded rod is rotationally connected to the connecting support working chassis, and the connecting supporting working chassis is mounted on the surface for A third motor drives the third threaded rod to rotate. Two auxiliary frames are threadedly connected to the surface of the third threaded rod. The internal thread grooves of the two auxiliary frames are in opposite directions. When the third threaded rod rotates, the two auxiliary frames are in opposite directions. move.

As a further improvement of this technical solution, a turret is rotatably connected to the inside of the auxiliary frame, an elastic member is installed inside the turret, and an elastic block is connected to the other end of the elastic member. wheel, and a fourth motor for driving the wheel to rotate is installed on the surface of the auxiliary frame.

The second object of the present invention is to provide a testing method for a wind power spindle bearing testing machine, which includes the following method steps:

S1. Clamp the wind power spindle bearing through the bearing clamping and pressure component, and then the bearing is connected to the rotation test component to drive the wind power spindle bearing to perform the rotation axial test;

S2. At the same time, conduct a pressure test around the wind power main shaft bearing through the bearing clamping pressure component and the bearing rotation side azimuth pressure stabilization component to simulate actual wind pressure.

Compared with the existing technology, the beneficial effects of the present invention are:

1. In this wind power spindle bearing testing machine and its testing method, a fixed pressure is applied to the surface of the pitch bearing in a static state through the bearing connection rotating test component and the bearing clamping pressure component, and then the deformation of the pitch bearing surface is measured. Degree, if the deformation degree is less than the normal deformation threshold interval, it proves that the stiffness of the pitch bearing is qualified, the rotation of the bearing is controlled, and the pressure is applied when the bearing rotates to improve the quality of the test.

2. In this wind power spindle bearing testing machine and its test method, through the bearing clamping pressure component and the bearing rotation side azimuth pressure stabilization component, the multi-directional pressure test on the bearing can more realistically simulate the wind force during the actual operation of the bearing. Pressure is applied to the bearings from all directions to prevent the test from only applying pressure to one side, and it cannot accurately simulate the pressure of the pitch bearing under wind load during normal operation. Assist the bearings during testing to prevent unqualified bearings from vibrating and deflecting the testing machine, causing collisions between the testing machine and the bearings, and causing damage to the testing machine.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic structural diagram of the first threaded rod of the present invention;

Figure 3 is a schematic structural diagram of the connecting frame of the present invention;

Figure 4 is a schematic structural diagram of the fourth motor of the present invention;

Figure 5 is a schematic structural diagram of position A in Figure 4 of the present invention;

Figure 6 is a schematic structural representation of the second clamping frame of the present invention.

The meaning of each symbol in the figure is:

11. Connect and support the working chassis;

20. Bearing connection rotation test assembly; 21. Working frame; 22. First threaded rod; 23. First motor; 24. Connecting frame; 25. Second threaded rod; 26. Second motor; 27. Moving block; 28 , rotating test motor;

30. Bearing clamping and pressure applying component; 31. Fixing frame; 32. First clamping frame; 33. Second clamping frame; 34. Screws; 35. Pressure applicator; 36. Rotating roller; 37. Hydraulic cylinder;

40. Bearing rotation side azimuth pressure stabilizing component; 41. Third threaded rod; 42. Third motor; 43. Auxiliary frame; 44. Rotating frame; 45. Elastic member; 46. Elastic block; 47. Runner; 48 , the fourth motor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

Example 1

Please refer to Figures 1 to 6. One of the purposes of this embodiment is to provide a wind power spindle bearing testing machine, which includes a connecting and supporting working bottom frame 11. The surface of the connecting and supporting working bottom frame 11 is provided with a bearing connection rotation test assembly. 20. The bearing connection rotation test assembly 20 is used to perform a pressure test on the rotation of the wind power main shaft bearing. The connection support working chassis 11 is provided with a bearing clamping pressure assembly 30 on the surface. The bearing clamping pressure assembly 30 is used to test the wind power main shaft bearing. Clamp and apply rotational pressure on the rotating corners of the wind power main shaft bearing. The surface of the connecting support working chassis 11 is provided with a bearing rotation side azimuth pressure stabilizing assembly 40. The bearing rotation side azimuth pressure stabilizing assembly 40 is used to stabilize the wind power generation. The main shaft bearing performs a pressure test on its cross section during rotation. At the same time, the wind power main shaft bearing is clamped on the surface of the bearing clamping pressure assembly 30 through elastic force, the wind power main shaft bearing offset is corrected, and the rotation side of the bearing is pressurized. The stabilizing assembly 40 drives the bearing connection rotation test assembly 20 to move, so that the bearing connection rotation test assembly 20 moves laterally to contact the wind power main shaft bearing for testing.

The improvement of this embodiment is that a fixed pressure is applied to the pitch bearing surface in the static state through the bearing connection rotation test component 20 and the bearing clamping pressure component 30, and then the deformation degree of the pitch bearing surface is measured. If If the degree of deformation is less than the normal deformation threshold interval, it proves that the stiffness of the pitch bearing is qualified, the rotation of the bearing is controlled, and pressure is applied to the bearing when it rotates;

In this wind power spindle bearing testing machine and its testing method, the bearing clamping pressure component 30 and the bearing rotation side azimuth pressure stabilizing component 40 apply pressure to the bearing in multiple directions to more realistically simulate the wind force during actual operation of the bearing. The bearing is pressurized from all directions to prevent the test from only pressurizing one side, and it cannot accurately simulate the pressure of the pitch bearing under the wind load during normal operation. At the same time, the azimuth pressure stabilization assembly 40 on the side of the bearing rotation is Assist the bearing when testing the bearing to prevent unqualified bearings from vibrating and deflecting the testing machine, causing collisions between the testing machine and the bearing.

The bearing connection rotation test assembly 20 includes a work frame 21. The work frame 21 is installed on the surface of the connection support working bottom frame 11. A first threaded rod 22 is rotatably connected inside the work frame 21. A first threaded rod 22 is installed on the surface of the work frame 21 for driving the first threaded rod 22. The rotating first motor 23 has a connecting frame 24 threadedly connected to the surface of the first threaded rod 22. A second threaded rod 25 is rotatably connected to the inner part of the connecting frame 24. A second threaded rod 25 is mounted on the surface of the connecting frame 24 for driving the second threaded rod 25 to rotate. The surface of the motor 26 and the second threaded rod 25 is threadedly connected with a moving block 27;

The moving block 27 and the connecting frame 24 are slidingly connected to limit the moving path of the moving block 27. A rotating test motor 28 is installed on the surface of the moving block 27. The bearing clamping and pressing assembly 30 includes a fixed frame 31, and the fixed frame 31 is installed On the surface of the connection support working bottom frame 11, first clamping frames 32 are provided on both left and right sides of the fixed frame 31, and a hydraulic cylinder 37 for driving the first clamping frame 32 to move laterally is installed on the surface of the fixed frame 31;

The surface of the fixing frame 31 is provided with a second clamping frame 33, and the surface of the first clamping frame 32 is provided with screws 34. The second clamping frame 33 and the first clamping frame 32 are fixedly connected through the screws 34. The first clamping frame 32 A rotating roller 36 is rotatably connected to the surface of the second clamping frame 33, and a pressure applicator 35 for applying pressure to the wind power main shaft bearing is installed on the surface of the first clamping frame 32 and the second clamping frame 33;

The bearing rotation side azimuth pressure stabilizing assembly 40 includes a third threaded rod 41. The third threaded rod 41 is rotationally connected to the connecting support working chassis 11. The connecting supporting working chassis 11 is equipped with a third threaded rod 41 for driving the rotation on the surface. The three motors 42 and the third threaded rod 41 are threadedly connected with two auxiliary frames 43 on the surface. The internal thread grooves of the two auxiliary frames 43 have opposite directions. When the third threaded rod 41 rotates, the two auxiliary frames 43 move in opposite directions. The interior of the auxiliary frame 43 A turret 44 is rotatably connected. An elastic member 45 is installed inside the turret 44. The other end of the elastic member 45 is connected with an elastic block 46. A runner 47 is rotatably connected inside the auxiliary frame 43. A runner 47 is installed on the surface of the auxiliary frame 43 for driving the runner. 47 rotates the fourth motor 48 .

The second purpose of this embodiment is to provide a testing method for a wind power spindle bearing testing machine, which includes the following method steps:

S1. Clamp the wind power main shaft bearing through the bearing clamping and pressure assembly 30, and then the bearing connection rotation test assembly 20 drives the wind power main shaft bearing to perform a rotational axial test;

S2. At the same time, perform a pressure test around the wind power main shaft bearing through the bearing clamping pressure component 30 and the bearing rotation side azimuth pressure stabilization component 40 to simulate actual wind pressure.

To sum up, the working principle of this scheme is as follows: when it is necessary to test the wind power spindle bearing, first place the wind power spindle bearing on the surface of the second clamping frame 33, and then start the hydraulic cylinder 37 to work, and the hydraulic cylinder 37 The work drives the first clamping frame 32 to move, the first clamping frame 32 moves to fit the second clamping frame 33, and then the first clamping frame 32 and the second clamping frame 33 are connected through the auxiliary frame 43, so as to Wind power spindle bearings are clamped;

After that, the third motor 42 is started to work. The third motor 42 works to drive the third threaded rod 41 to rotate. The rotation of the third motor 42 causes the auxiliary frame 43 to move. During the movement of the auxiliary frame 43, the elastic member 45 generates elastic force to push. The elastic block 46 contacts the wind power main shaft bearing, and then the fourth motor 48 is started to work. The fourth motor 48 works to drive the runner 47 to rotate. The rotation of the runner 47 drives the turret 44 to rotate. The rotation of the turret 44 causes the elastic block 46 to contact The position of the wind power main shaft bearing changes, thereby exerting pressure on different places of the wind power main shaft bearing;

Then start the first motor 23 to work. The first motor 23 works to drive the first threaded rod 22 to rotate. The rotation of the first threaded rod 22 causes the connecting frame 24 to move. The connecting frame 24 moves to push the moving block 27 to move, and the moving block 27 moves. The rotating test motor 28 is driven to move, and the rotating test motor 28 is moved and installed into the wind power main shaft bearing, and then the rotating test motor 28 is started to work. The rotating test motor 28 works to drive the wind power main shaft bearing to rotate, and then the pressure applicator 35 is started to make it work. When working, the pressure applicator 35 works to perform a pressure test on the wind power main shaft bearing.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry 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 used to limit the present invention. Under the premise, there will be various changes and improvements in the present invention, and these changes and improvements all fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a wind-powered electricity generation main shaft bearing testing machine which characterized in that: including connection support work chassis (11), connection support work chassis (11) surface is equipped with bearing connection rotation test subassembly (20), bearing connection rotation test subassembly (20) are used for carrying out the pressurization test to wind-powered electricity generation main shaft bearing rotation, connection support work chassis (11) surface is equipped with bearing clamping pressure subassembly (30), bearing clamping pressure subassembly (30) are used for carrying out the centre gripping to wind-powered electricity generation main shaft bearing to carry out rotation to wind-powered electricity generation main shaft bearing rotation corner and exert pressure, connection support work chassis (11) surface is equipped with bearing rotation side position pressurization stabilizing assembly (40), bearing rotation side position pressurization stabilizing assembly (40) are used for carrying out the pressurization test to wind-powered electricity generation main shaft bearing at rotatory in-process to its cross section, and simultaneously through supplementary wind-powered electricity generation main shaft bearing clamping pressure subassembly (30) surface of elasticity, correct wind-powered electricity generation main shaft bearing skew to bearing rotation side position pressurization stabilizing assembly (40) drive bearing connection rotation test subassembly (20) move, make bearing connection rotation test subassembly (20) lateral shifting contact wind-powered electricity generation main shaft bearing carry out the test.

2. The wind power spindle bearing tester according to claim 1, wherein: the bearing connection rotation test assembly (20) comprises a working frame (21), the working frame (21) is installed on the surface of the connection support working underframe (11), a first threaded rod (22) is connected with the working frame (21) in a rotation mode, and a first motor (23) used for driving the first threaded rod (22) to rotate is installed on the surface of the working frame (21).

3. The wind power spindle bearing tester according to claim 2, wherein: the utility model discloses a movable device for the electric vehicle, including first threaded rod (22) surface threaded connection has link (24), link (24) inside rotation is connected with second threaded rod (25), link (24) surface mounting has second motor (26) that are used for driving second threaded rod (25) rotation, second threaded rod (25) surface threaded connection has movable block (27).

4. A wind power spindle bearing tester according to claim 3, characterized in that: the movable block (27) is in sliding connection with the connecting frame (24) and used for limiting the moving path of the movable block (27), and a rotation test motor (28) is arranged on the surface of the movable block (27).

5. The wind power spindle bearing tester according to claim 1, wherein: the bearing clamping pressing assembly (30) comprises a fixing frame (31), the fixing frame (31) is arranged on the surface of the connecting support working underframe (11), first clamping frames (32) are arranged on the left side and the right side of the fixing frame (31), and a hydraulic cylinder (37) used for driving the first clamping frames (32) to transversely move is arranged on the surface of the fixing frame (31).

6. The wind power spindle bearing tester according to claim 5, wherein: the fixing frame (31) surface is equipped with second holder (33), first holder (32) surface is equipped with screw (34), second holder (33) and first holder (32) pass through screw (34) fixed connection, first holder (32) and second holder (33) surface all rotate and are connected with rotor (36).

7. The wind power spindle bearing tester according to claim 5, wherein: and the surfaces of the first clamping frame (32) and the second clamping frame (33) are respectively provided with a pressure applicator (35) for applying pressure to the wind power main shaft bearing.

8. The wind power spindle bearing tester according to claim 1, wherein: bearing rotation side position pressurization stabilizing assembly (40) include third threaded rod (41), third threaded rod (41) and connection support work chassis (11) rotate to be connected, connection support work chassis (11) surface mounting has third motor (42) that are used for driving rotation of third threaded rod (41), third threaded rod (41) surface threaded connection has two auxiliary frame (43), two auxiliary frame (43) inside thread groove opposite direction is moved when two auxiliary frame (43) are rotated to third threaded rod (41).

9. The wind power spindle bearing tester according to claim 8, wherein: the auxiliary frame (43) is internally connected with a rotating frame (44) in a rotating mode, an elastic piece (45) is arranged in the rotating frame (44), the other end of the elastic piece (45) is connected with an elastic block (46), the rotating wheel (47) is connected with the auxiliary frame (43) in a rotating mode, and a fourth motor (48) for driving the rotating wheel (47) to rotate is arranged on the surface of the auxiliary frame (43).

10. A test method for a wind power spindle bearing tester according to any one of claims 1-9, characterized in that: the method comprises the following steps:

s1, clamping a wind power main shaft bearing through a bearing clamping and pressing assembly (30), and then driving the wind power main shaft bearing to carry out a rotation axial test by a bearing connection rotation test assembly (20);

s2, simultaneously carrying out a pressure test on the periphery of the wind power main shaft bearing through the bearing clamping pressure application assembly (30) and the bearing rotation side direction pressure application stabilizing assembly (40), and simulating actual wind power pressure.