A test device for a wind turbine gearbox and a method of use

Abstract

This invention provides a testing device and method for wind turbine gearboxes, relating to the field of wind turbine gearbox equipment. The testing device includes a housing, a motor, a connecting plate, a bidirectional threaded rod, a height adjustment structure, and a limiting structure. Before the experiment, the motor is started, driving the bidirectional threaded rod, which in turn drives the connecting plate. The connecting plate, through the height adjustment structure, drives the limiting structure, pulling out the first positioning rod to disengage it from the first positioning hole, thus adjusting the height of the telescopic column. After height adjustment, the second positioning rod is rotated counterclockwise to disengage it from the slider, then pushing the slider. The slider drives the upright, which, through a fixing block, drives the arc-shaped plate and the clamping plate. When the clamping plate is in contact with the gearbox, the gearbox is limited. The combined use of the height adjustment structure and the limiting structure allows for rapid adjustment of the height and the distance between the clamping plates according to the gearbox specifications, improving fixing efficiency.

Description

Technical Field

[0001] This invention relates to the field of wind turbine gearbox equipment technology, specifically to a test device and method for using a wind turbine gearbox. Background Technology

[0002] The wind turbine gearbox is an important mechanical component. Its main function is to transmit the power generated by the wind turbine under the action of wind to the generator and enable it to achieve the corresponding speed. Wind turbine gearboxes have requirements for high reliability and long service life. The testing and verification of wind turbine gearboxes is a very important part of the wind turbine gearbox production process. Generally, it is necessary to place the wind turbine gearbox to be tested in the testing equipment to test its cold resistance.

[0003] However, the limit device lacks a quick adjustment function. When fixing different models of wind turbine gearboxes, the bolts need to be removed and the position of the limit structure adjusted in order to fix different models of gearboxes. In addition, there will be blind spots in the fit between the gearbox and the test workbench, which makes it impossible to accurately and objectively test the overall cold resistance of the gearbox and affect the accuracy of the final experimental data.

[0004] In addition, roller bearings are often used in testing equipment and other related equipment for wind turbine gearboxes. Roller bearings are a type of rolling bearing and are one of the most widely used components in modern machinery. They rely on the rolling contact between the main components to support rotating parts. Most roller bearings are now standardized. Roller bearings have advantages such as low starting torque, high rotational accuracy, and convenient selection. Existing bearings are generally fixed to the testing equipment of wind turbine gearboxes by welding. During later disassembly and maintenance, they generally need to be cut and disassembled, which affects the secondary use effect. Moreover, the internal disassembly and maintenance of existing roller bearings is relatively inconvenient, which affects the maintenance effect.

[0005] Based on the above, this invention proposes a test device and method for using a wind turbine gearbox, which can effectively solve the above problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a testing device and method for wind turbine gearboxes, solving the problems that wind turbine gearbox testing devices cannot quickly position gearboxes of various models and that the large contact area between the gearbox and the workbench affects the cold resistance test data. In addition, the bearings described in this invention solve the problems mentioned in the background art, such as the cumbersome connection method of bearings and the inconvenience of disassembling and maintaining the internal parts of roller bearings.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A test device for a wind turbine gearbox includes a housing. A control panel is fixedly mounted on the front of the housing. Two guide rods are fixedly mounted inside the housing, and two connecting plates are movably mounted on the two guide rods. A motor is fixedly mounted on one side of the housing. The output end of the motor passes through the inner wall of one side of the housing and is fixedly mounted with a bidirectional threaded rod. One end of the bidirectional threaded rod is movably connected to the inner wall of one side of the housing. The bidirectional threaded rod is movably connected to the two connecting plates. A height adjustment structure is fixedly mounted on the top of each of the two connecting plates. A connecting rod is fixedly mounted on the top of the housing, and a placement plate is fixedly mounted on the top of the connecting rod. A cooler is fixedly mounted on the top of the housing. Multiple support plates are fixedly mounted on the top of the housing, and a locking block is fixedly mounted on one side of each support plate. A sealing cover is movably mounted on the top of the housing, and locking structures are provided on both the front and back inner walls of the sealing cover.

[0009] Preferably, the height adjustment structure includes an outer mounting sleeve fixedly connected to the connecting plate. A first spring is fixedly provided on the bottom inner wall of the outer mounting sleeve. A guide plate is fixedly provided on the top of the first spring. A telescopic column is fixedly provided on the top of the guide plate. The top of the telescopic column penetrates the top inner wall of the outer mounting sleeve. A plurality of first positioning holes are provided on one side of the telescopic column. A first positioning rod is movably provided on one side of the outer mounting sleeve. The first positioning rod and the first positioning holes are adapted to each other. A limiting structure is fixedly provided on the top of the telescopic column.

[0010] Preferably, the limiting structure includes an adjusting seat fixedly installed with the telescopic column. The top of the adjusting seat is provided with a mounting groove, and a sliding rod is fixedly provided in the mounting groove. A slider is movably provided on the sliding rod. The slider is movably connected to the front inner wall and the back inner wall of the mounting groove. A vertical rod is fixedly provided on the top of the slider. A fixing block is fixedly provided on the top of the vertical rod. An arc-shaped plate is fixedly provided on the top of the fixing block. A plurality of second springs are fixedly provided on one side of the arc-shaped plate. The ends of the plurality of second springs away from the arc-shaped plate are fixedly provided with the same clamping plate. An anti-slip pad is fixedly provided on the side of the clamping plate away from the second springs. A plurality of internal threaded holes are provided on one side of the adjusting seat. A second positioning hole is provided on one side of the slider. A second positioning rod is movably provided in the internal threaded hole.

[0011] Preferably, the mounting groove is provided with limiting grooves on both the front and back inner walls, and the slider is fixedly provided with limiting blocks on both the front and back sides, and the limiting blocks and limiting grooves are compatible.

[0012] Preferably, the locking structure includes a hinge seat fixedly installed to the inner wall of the sealing cover and a top rod movably installed to the sealing cover. A locking frame is movably provided inside the hinge seat, and a third spring is fixedly provided on one side of the locking frame. The end of the third spring away from the locking frame is fixedly connected to the inner wall of the sealing cover.

[0013] Preferably, a through hole is provided on one inner wall of the sealing cover, and a sealing ring is provided on the inner wall of the through hole. The inner wall of the sealing ring is movably connected to the top rod. A pull handle is fixedly provided at one end of the top rod, and a fourth spring is sleeved on the top rod. One end of the fourth spring is fixedly connected to the pull handle, and the other end of the fourth spring is fixedly connected to the sealing cover.

[0014] Preferably, a mounting block is provided on one inner wall of the housing, and a groove is provided on one side of the mounting block. A bearing is provided in the groove, the outer ring of the bearing is fixedly connected to the inner wall of the groove, and the inner ring of the bearing is fixedly sleeved on the bidirectional threaded rod.

[0015] Preferably, the bearing includes a bearing housing, side covers, a second bolt, a roller body, and a spacer ring. Side covers are connected to both sides of the bearing housing. The second bolt is threaded onto the bearing housing. The roller body is fitted onto the bearing housing. The roller body is rotatably connected to the spacer ring. The spacer ring is fixedly connected to the bearing housing.

[0016] Preferably, the bearing housing is composed of an inner ring, a rotating groove, a threaded hole and an outer ring. The inner ring has rotating grooves on both sides, and the inner ring has threaded holes arranged in a ring array on both sides. The outer ring is fitted to the outer ring of the inner ring.

[0017] Preferably, two side covers are symmetrically arranged. A rotating ring is fixedly connected to the inner ring of the side cover, and the rotating ring is rotatably connected in the rotating groove. A fixing lug is fixedly connected to the outer ring of the side cover, and the two fixing lugs on the side cover are connected by a first bolt.

[0018] Preferably, the second bolt is threaded into the threaded hole.

[0019] Preferably, the roller body is composed of a ball bearing, a connecting shaft, and a rotating ball bearing. Two balls bearing are symmetrically arranged and are fixedly connected to each other by the connecting shaft. One end of each ball bearing is rotatably connected to a rotating ball bearing. The ball bearing is rotatably connected between the inner ring and the outer ring, and the rotating ball bearing rotates and abuts against the side cover.

[0020] Preferably, the limiting ring is fixedly connected to the outer ring between the inner ring and the outer ring, and the limiting ring has a ring array of engaging grooves, in which a connecting shaft is rotatably engaged.

[0021] The bearing designed in this invention, through its matching design, allows for convenient connection and fixation to the mounting groove of the wind turbine gearbox test device housing via the connection of the second bolt on the inner ring. This connection eliminates the need for welding and cutting during later disassembly, facilitating easy disassembly and use. Furthermore, the matching design of the side cover and bearing housing allows for convenient and easy disassembly when the roller body inside the roller bearing needs to be disassembled for maintenance.

[0022] Preferably, the bottom of the box is fixedly provided with four support legs arranged in a rectangle, and the bottom of each of the four support legs is provided with an anti-slip pad, and the top of the placement plate is provided with multiple ventilation holes.

[0023] A method for using a testing apparatus for a wind turbine gearbox, the method comprising the following steps:

[0024] S1. First, place the gearbox to be tested on the top of the placement plate. Then, adjust the position of the two sets of height adjustment structures according to the length of the gearbox. Start the motor through the control panel. The motor drives the double-threaded rod, which in turn drives the two connecting plates to move closer and further apart. The connecting plates then drive the top height adjustment structure. When the position of the height adjustment structure is appropriate, turn off the motor through the control panel to adjust the position of the height adjustment structure.

[0025] S2. Pull the first positioning rod outward to disengage it from the first positioning hole. Under the rebound force of the first spring, the guide plate drives the telescopic column to move upward. The telescopic column then drives the adjusting seat to move upward. The adjusting seat then drives the slider, column, clamping plate and arc plate and other components to move upward. When the height of the clamping plate is aligned with the central axis of the gearbox, insert the first positioning rod back into the first positioning hole to achieve height adjustment of the limiting structure.

[0026] S3. Rotate the second positioning rod counterclockwise to disengage it from the internal threaded hole and the second positioning hole on one side of the slider. Then push the slider towards the gearbox. The slider drives the upright rod, which in turn drives the fixing block. The fixing block then drives the arc plate, which in turn drives the second spring and the clamping plate. When the clamping plate is tightly fitted to one side of the gearbox, screw the second positioning rod clockwise into the internal threaded hole and insert it into the second positioning hole to position the slider and thus limit the gearbox.

[0027] S4. Lift the sealing cover so that the inner walls on both sides of the sealing cover are in contact with the side of the two sets of support plates that are far away from each other. Then press down. The sealing cover moves the locking frame down and the locking frame is in contact with the inclined surface of the locking block. The locking block squeezes the locking frame. The locking frame rotates and squeezes the third spring on one side. When the locking frame is out of contact with the inclined surface of the locking block, the third spring applies a pushing force to the locking frame, so that it is locked on the locking block, thus realizing the installation of the sealing cover. After the sealing cover completes the sealing of the gearbox to be tested, the cold resistance test can be carried out by controlling the cooler through the control panel.

[0028] S5. After the test is completed, simultaneously squeeze the four push rods on the sealing cover. The push rods squeeze the locking frame, and after the locking frame disengages from the locking block, the sealing cover can be removed, and then the gearbox can be taken out.

[0029] This invention provides a testing apparatus and method for using a wind turbine gearbox. It offers the following advantages:

[0030] 1. The wind turbine gearbox testing device of the present invention comprises a motor, a connecting plate, a bidirectional threaded rod, a height adjustment structure, and a limiting structure. Before the experiment, the motor is started, which drives the bidirectional threaded rod, which in turn drives the connecting plate. The connecting plate, through the height adjustment structure, drives the limiting structure, pulling out the first positioning rod to disengage it from the first positioning hole, thereby adjusting the height of the telescopic column. After the height adjustment is completed, the second positioning rod is rotated counterclockwise to disengage it from the slider, and then the slider is pushed. The slider drives the upright, which in turn drives the arc-shaped plate and the clamping plate through the fixing block. When the clamping plate is in contact with the gearbox, the gearbox is limited. The combined use of the height adjustment structure and the limiting structure enables rapid adjustment of the height and the distance between the clamping plates according to the specifications of the gearbox, improving the fixing efficiency.

[0031] 2. The test device for wind turbine gearbox of the present invention, by setting a placement plate with ventilation holes, allows the cold air inside the device to penetrate through the ventilation holes and act on the bottom of the gearbox, thereby minimizing the area of ​​the gearbox that is not in contact with the cold air and improving the accuracy of the test data.

[0032] 3. The wind turbine gearbox test device of the present invention is equipped with components such as a locking block, a support plate, a hinge seat, a top rod, a locking frame, and a third spring. The locking block is locked and unlocked by rotating the locking frame, thereby realizing the quick disassembly and assembly of the sealing cover, facilitating the installation and removal of the gearbox to be tested, and speeding up the test process.

[0033] 4. The bearing designed in this invention, through its matching design, allows for convenient connection and fixation to the mounting groove of the wind turbine gearbox test device housing via the connection of the second bolt on the inner ring. This eliminates the need for welding and cutting during later disassembly, facilitating easy disassembly and use. Furthermore, the matching design of the side cover and bearing housing allows for convenient disassembly and maintenance of the roller body inside the roller bearing, improving the efficiency of later maintenance. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the front section structure of the present invention after the sealing cap has been removed;

[0036] Figure 3 This is a three-dimensional structural diagram of the sealing cap in this invention;

[0037] Figure 4 This is an enlarged structural diagram of part A in this invention;

[0038] Figure 5 This is a three-dimensional structural diagram of the height adjustment structure and the limiting structure in this invention;

[0039] Figure 6 This is a frontal sectional perspective view of the height adjustment structure and the limiting structure in this invention;

[0040] Figure 7 This is a three-dimensional structural diagram of the support plate and the card block in this invention;

[0041] Figure 8 This is a schematic diagram of the overall structure of the bearing described in this invention;

[0042] Figure 9 This is a schematic diagram of the overall disassembled structure of the bearing described in this invention;

[0043] Figure 10 This is a schematic diagram of the bearing housing structure of the bearing described in this invention;

[0044] Figure 11 This is a schematic diagram of the side cover structure of the bearing described in this invention;

[0045] Figure 12 This is a schematic diagram of the roller body and spacer ring structure of the bearing described in this invention.

[0046] The components include: 1. Housing; 01. Bearing housing; 0101. Inner ring; 0102. Rotating groove; 0103. Threaded hole; 0104. Outer ring; 02. Side cover; 0201. Rotating ring; 0202. Fixing lug; 0203. First bolt; 03. Second bolt; 04. Roller body; 0401. Ball bearing; 0402. Connecting shaft; 0403. Rotating ball bearing; 05. Spacer ring; 0501. Engaging groove; 2. Control panel; 3. Guide rod; 4. Connecting plate; 5. Motor; 6. Bidirectional threaded rod; 7. Height adjustment structure; 701. Outer mounting sleeve; 702. First spring; 7 03. Guide plate; 704. Telescopic column; 705. First positioning rod; 706. First positioning hole; 8. Limiting structure; 801. Adjusting seat; 802. Slide rod; 803. Slider; 804. Upright rod; 805. Fixing block; 806. Arc plate; 807. Second spring; 808. Clamping plate; 809. Internal threaded hole; 810. Second positioning rod; 9. Connecting rod; 10. Placement plate; 11. Cooler; 12. Support plate; 13. Locking block; 14. Sealing cover; 15. Locking structure; 151. Hinge seat; 152. Top rod; 153. Locking frame; 154. Third spring. Detailed Implementation

[0047] 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. Example

[0048] like Figure 1-12As shown, this embodiment of the invention provides a test device for a wind turbine gearbox, including a housing 1. A control panel 2 is bolted to the front of the housing 1. Two guide rods 3 are welded inside the housing 1, and two connecting plates 4 are slidably mounted on the two guide rods 3. The guide rods 3 guide the connecting plates 4. When the bidirectional threaded rod 6 rotates, the connecting plates 4 rotate accordingly. A motor 5 is bolted to one side of the housing 1. The output end of the motor 5 passes through the inner wall of one side of the housing 1 and is welded with a bidirectional threaded rod 6. One end of the bidirectional threaded rod 6 is rotatably connected to the inner wall of one side of the housing 1. A mounting block is provided on the inner wall of one side of the housing 1 (the mounting block can be embedded in the housing 1). On one side of the inner wall of the box 1, and fixed by conventional methods such as welding; in addition, the other side of the corresponding box 1 can also be provided with mounting blocks in the same / different way), one side of the mounting block is provided with a groove (the groove can be embedded in one side of the inner wall of the box 1, and can be set as a through groove as needed; in addition, if the other side of the corresponding box 1 can also be provided with mounting blocks in the same / different way, and also provided with corresponding grooves, that is, to satisfy that the bidirectional threaded rod 6 can rotate under the drive of the motor 5), a bearing is provided in the groove, the outer ring of the bearing is welded to the inner wall of the groove, and the inner ring of the bearing is fixedly sleeved on the bidirectional threaded rod 6;

[0049] Furthermore, in some embodiments, reference is made to... Figure 8-12As shown, the bearing includes a bearing housing 01, side covers 02, a second bolt 03, a roller body 04, and a spacer ring 05. This bearing design, through its mating mechanism, eliminates the need for welding during connection and fixation, improving the convenience of disassembly and maintenance. This mating design also facilitates disassembly and removal of the roller body 04 when it wears, improving maintenance efficiency and meeting usage requirements. Side covers 02 are fitted to both sides of the bearing housing 01. A second bolt 03 is threaded into the bearing housing 01. A roller body 04 is fitted onto the bearing housing 01. The roller body 04 is rotatably connected to a spacer ring 05, which is fixedly connected to the bearing housing 01. When this roller bearing is installed on the test device of the wind turbine gearbox, it is fitted onto the double-threaded rod 6 as a whole, and then the second bolt 03 is threaded into the threaded hole 0103. This allows the second bolt 03 to abut against the double-threaded rod 6, and the inner ring 0101 to engage with the double-threaded rod 6, thus meeting the bearing's usage requirements. The circular array arrangement of the second bolt 03 allows the device to be used with bidirectional threaded rods 6 of different diameters, improving its performance. When the roller bearing in this design is used for a long time, the inner roller body 04 will wear and require maintenance. By disassembling the first bolt 0203, the two side covers 02 can be removed from the bearing housing 01, and then the inner ring 0101 can be pulled out first. At this point, the inner ring of the roller body 04 loses the support of the inner ring 0101, allowing the roller body 04 to move freely from its limited position. Remove the bearing from ring 05 to allow for maintenance and cleaning, improving its performance. Reinstall the bearing by reversing the disassembly steps. The side cover 02's limiting effect on the inner ring 0101 and outer ring 0104 facilitates easy installation. The rotating ball 0403, rotatably connected to the top of the ball 0401, abuts against the side cover 02, ensuring that the bearing's rotation does not obstruct the side cover's connection, reducing sliding friction and allowing for convenient disassembly and use later.

[0050] Further reference Figure 10 As shown, in some embodiments, the bearing housing 01 is composed of an inner ring 0101, a rotating groove 0102, a threaded hole 0103, and an outer ring 0104. The inner ring 0101 has rotating grooves 0102 on both sides, and threaded holes 0103 are arranged in an annular array on both sides of the inner ring 0101. The outer ring 0104 is provided on the outer ring of the inner ring 0101. The design of the bearing housing 01 meets the usage requirements. Through the matching design, the bearing can be easily disassembled and maintained in later use.

[0051] Further reference Figure 11As shown, in some embodiments, two side covers 02 are symmetrically arranged. A rotating ring 0201 is fixedly connected to the inner ring of the side cover 02. The rotating ring 0201 is rotatably connected in the rotating groove 0102. A fixing ear 0202 is fixedly connected to the outer ring of the side cover 02. The fixing ears 0202 on the two side covers 02 are connected by a first bolt 0203. The side cover 02 allows the roller body 04 to be easily disassembled from the bearing housing 01 for use, thus improving the performance.

[0052] Further reference Figure 9 As shown, in some embodiments, the second bolt 03 is threaded into the threaded hole 0103. The design of the second bolt 03 enables the bearing to be easily connected to the bidirectional threaded rod 6 and can adapt to the installation and use of bidirectional threaded rods 6 with different thicknesses.

[0053] Further reference Figure 12 As shown, in some embodiments, the roller body 04 is composed of a ball 0401, a connecting shaft 0402, and a rotating ball 0403. Two balls 0401 are symmetrically arranged, and the two balls 0401 are fixedly connected to each other by the connecting shaft 0402. One end of the ball 0401 is rotatably connected to the rotating ball 0403. The ball 0401 is rotatably connected between the inner ring 0101 and the outer ring 0104. The rotating ball 0403 rotates and abuts against the side cover 02. The design of the roller body 04 well meets the usage requirements and ensures that the bearing can be easily disassembled and can operate normally.

[0054] Further reference Figure 12 As shown, in some embodiments, the limiting ring 05 is fixedly connected to the outer ring 0104 between the inner ring 0101 and the outer ring 0104. The limiting ring 05 has a ring array of engaging grooves 0501, and the connecting shaft 0402 is rotatably engaged in the engaging grooves 0501. The design of the limiting ring 05 enables the spacing between several roller bodies 04 to be the same, which meets the requirements for rotation.

[0055] The bearing designed in this invention, through its matching design, allows for convenient connection and fixation to the mounting groove of the wind turbine gearbox test device housing via the connection of the second bolt on the inner ring. This connection eliminates the need for welding and cutting during later disassembly, facilitating easy disassembly and use. Furthermore, the matching design of the side cover and bearing housing allows for convenient and easy disassembly when the roller body inside the roller bearing needs to be disassembled for maintenance.

[0056] Furthermore, in some embodiments, the bidirectional threaded rod 6 and two connecting plates 4 are threadedly connected. The top of each of the two connecting plates 4 is bolted with a height adjustment structure 7. The height adjustment structure 7 includes an outer mounting sleeve 701 bolted to the connecting plate 4. A first spring 702 is welded to the bottom inner wall of the outer mounting sleeve 701. A guide plate 703 is welded to the top of the first spring 702. A telescopic column 704 is welded to the top of the guide plate 703. The top of the telescopic column 704 penetrates the top inner wall of the outer mounting sleeve 701. A plurality of first positioning holes 706 are provided on one side of the telescopic column 704. A first positioning rod 705 is inserted into one side of the outer mounting sleeve 701. The first positioning rod 705 and the first positioning holes 706 are compatible.

[0057] Furthermore, in some embodiments, a limiting structure 8 is bolted to the top of the telescopic column 704. The limiting structure 8 includes an adjusting seat 801 bolted to the telescopic column 704. The top of the adjusting seat 801 is provided with a mounting groove, and a sliding rod 802 is welded into the mounting groove. A slider 803 is slidably mounted on the sliding rod 802. The slider 803 is slidably connected to the front inner wall and the back inner wall of the mounting groove. Limiting grooves are provided on both the front inner wall and the back inner wall of the mounting groove. Limiting blocks are welded to both the front and back of the slider 803. The limiting blocks and the limiting grooves are adapted to each other. A vertical rod 804 is welded to the top of the slider 803, and a fixing block 805 is welded to the top of the vertical rod 804. An arc-shaped plate 806 is welded to the top of the fixing block 805. Multiple second springs 807 are fixed on one side of the arc-shaped plate 806. The same clamping plate 808 is welded to the end of the multiple second springs 807 away from the arc-shaped plate 806. An anti-slip pad is glued to the side of the clamping plate 808 away from the second springs 807 by adhesive. The anti-slip pad and the second springs 807 can both protect the gearbox. The anti-slip pad can also enhance the friction between the clamping plate 808 and the gearbox. Multiple internal threaded holes 809 are provided on one side of the adjusting seat 801. A second positioning hole is provided on one side of the slider 803. A second positioning rod 810 is installed in the internal thread of the internal threaded hole 809.

[0058] Furthermore, in some embodiments, a connecting rod 9 is welded to the top of the housing 1, a placement plate 10 is welded to the top of the connecting rod 9, four rectangularly arranged support legs are welded to the bottom of the housing 1, and anti-slip pads are provided on the bottom of each of the four support legs. Multiple ventilation holes are provided on the top of the placement plate 10 to enhance airflow. A refrigerator 11 is bolted to the top of the housing 1. Multiple support plates 12 are welded to the top of the housing 1, and a locking block 13 is welded to one side of each support plate 12. A sealing cover 14 is secured to the top of the housing 1. Locking structures 15 are provided on both the front and back inner walls of the sealing cover 14. The locking structure 15 includes a hinge that is bolted to the inner wall of the sealing cover 14. The seat 151 and the top rod 152 are slidably installed with the sealing cover 14. A through hole is provided on one side of the inner wall of the sealing cover 14. A sealing ring is provided on the inner wall of the through hole. The inner wall of the sealing ring is slidably connected to the top rod 152. A pull handle is welded to one end of the top rod 152. A fourth spring is sleeved on the top rod 152. One end of the fourth spring is fixedly connected to the pull handle. The other end of the fourth spring is welded to the sealing cover 14. A locking frame 153 is hinged in the hinge seat 151. A third spring 154 is welded to one side of the locking frame 153. The end of the third spring 154 away from the locking frame 153 is welded to the inner wall of the sealing cover 14. The locking structure 15, the support plate and the locking block can realize the quick disassembly and assembly of the sealing cover 14 and speed up the test process.

[0059] The present invention also provides a method for using a testing device for wind turbine gearboxes, the method comprising the following steps:

[0060] S1. First, place the gearbox to be tested on the top of the placement plate 10. Then, adjust the position of the two sets of height adjustment structures 7 according to the length of the gearbox. Start the motor 5 through the control panel 2. The motor 5 drives the bidirectional threaded rod 6. The bidirectional threaded rod 6 then drives the two connecting plates 4 to move closer and further apart. The connecting plates 4 then drive the top height adjustment structure 7. When the position of the height adjustment structure 7 is appropriate, turn off the motor 5 through the control panel 2 to adjust the position of the height adjustment structure 7.

[0061] S2. Pull the first positioning rod 705 outward to disengage it from the first positioning hole 706. Under the rebound force of the first spring 702, the guide plate 703 drives the telescopic column 704 to move upward. The telescopic column 704 then drives the adjusting seat 801 to move upward. The adjusting seat 801 then drives the slider 803, the upright rod 804, the clamping plate 808, and the arc plate 806 to move upward. When the height of the clamping plate 808 is aligned with the central axis of the gearbox, insert the first positioning rod 705 back into the first positioning hole 706 to achieve height adjustment of the limiting structure 8.

[0062] S3. Rotate the second positioning rod 810 counterclockwise to disengage it from the internal threaded hole 809 and the second positioning hole on one side of the slider 803. Then push the slider 803 towards the gearbox. The slider 803 drives the upright rod 804, which in turn drives the fixing block 805. The fixing block 805 then drives the arc plate 806, which in turn drives the second spring 807 and the clamping plate 808. When the clamping plate 808 is tightly attached to one side of the gearbox, screw the second positioning rod 810 clockwise into the internal threaded hole 809 and insert it into the second positioning hole to position the slider 803, thereby completing the limiting of the gearbox.

[0063] S4. Lift the sealing cover 14 so that the inner walls on both sides of the sealing cover 14 are in contact with the side of the two sets of support plates 12 that are far away from each other. Then press down. The sealing cover 14 drives the locking frame 153 to move down. The locking frame 153 is in contact with the inclined surface of the locking block 13. The locking block 13 squeezes the locking frame 153. The locking frame 153 rotates and squeezes the third spring 154 on one side. When the locking frame 153 is out of contact with the inclined surface of the locking block 13, the third spring 154 applies a pushing force to the locking frame 153, so that it is locked on the locking block 13, thus realizing the installation of the sealing cover 14. After the sealing cover 14 completes the sealing of the gearbox to be tested, the cold resistance test can be carried out by controlling the cooler 11 through the control panel 2.

[0064] S5. After the test is completed, simultaneously squeeze the four push rods 152 on the sealing cover 14. The push rods 152 squeeze the locking frame 153. After the locking frame 153 disengages from the locking block 13, the sealing cover 14 can be removed, and then the gearbox can be taken out.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test apparatus for a wind turbine gearbox, comprising a housing (1), characterized in that: A control panel (2) is fixedly provided on the front of the housing (1). Two guide rods (3) are fixedly provided inside the housing (1). Two connecting plates (4) are movably provided on the two guide rods (3). A motor (5) is fixedly provided on one side of the housing (1). The output end of the motor (5) passes through the inner wall of one side of the housing (1) and is fixedly provided with a bidirectional threaded rod (6). One end of the bidirectional threaded rod (6) is movably connected to the inner wall of one side of the housing (1). The bidirectional threaded rod (6) is movably connected to the two connecting plates (4). The top of each box (1) is fixed with a height adjustment structure (7), the top of the box (1) is fixed with a connecting rod (9), the top of the connecting rod (9) is fixed with a placement plate (10), the top of the box (1) is fixed with a cooler (11), the top of the box (1) is fixed with multiple support plates (12), one side of the support plate (12) is fixed with a locking block (13), the top of the box (1) is movably provided with a sealing cover (14), and the inner wall of the front and back of the sealing cover (14) are provided with a locking structure (15). The inner wall of one side of the box (1) is provided with an installation block, and a groove is provided on one side of the installation block. A bearing is provided in the groove, the outer ring of the bearing is fixedly connected to the inner wall of the groove, and the inner ring of the bearing is fixedly sleeved on the bidirectional threaded rod (6). The bearing includes a bearing housing (01), a side cover (02), a second bolt (03), a roller body (04), and a spacer ring (05). The bearing housing (01) is fitted with side covers (02) on both sides. The bearing housing (01) is threaded with a second bolt (03). The bearing housing (01) is fitted with a roller body (04). The roller body (04) is rotatably connected to a distance ring (05). The distance ring (05) is fixedly connected to the bearing housing (01). The bearing housing (01) is composed of an inner ring (0101), a rotating groove (0102), a threaded hole (0103), and an outer ring (0104). The inner ring (0101) has rotating grooves (0102) on both sides, and the inner ring (0101) has threaded holes (0103) arranged in an annular array on both sides. The outer ring (0104) is fitted to the outer ring of the inner ring (0101). Two side covers (02) are symmetrically arranged. A rotating ring (0201) is fixedly connected to the inner ring of the side cover (02). The rotating ring (0201) is rotatably connected in the rotating groove (0102). A fixing ear (0202) is fixedly connected to the outer ring of the side cover (02). The fixing ears (0202) on the two side covers (02) are connected by a first bolt (0203). The second bolt (03) is threaded into the threaded hole (0103); The roller body (04) is composed of a ball (0401), a connecting shaft (0402), and a rotating ball (0403). Two balls (0401) are symmetrically arranged and fixedly connected to each other by the connecting shaft (0402). One end of each ball (0401) is rotatably connected to a rotating ball (0403). The ball (0401) is rotatably connected between the inner ring (0101) and the outer ring (0104). The rotating ball (0403) rotates and abuts against the side cover (02). The limiting ring (05) is fixedly connected to the outer ring (0104) between the inner ring (0101) and the outer ring (0104). The limiting ring (05) has a ring array of engaging grooves (0501), and a connecting shaft (0402) is rotatably engaged in the engaging grooves (0501).

2. The test apparatus for a wind turbine gearbox according to claim 1, characterized in that: The height adjustment structure (7) includes an outer mounting sleeve (701) fixedly connected to the connecting plate (4). A first spring (702) is fixedly provided on the bottom inner wall of the outer mounting sleeve (701). A guide plate (703) is fixedly provided on the top of the first spring (702). A telescopic column (704) is fixedly provided on the top of the guide plate (703). The top of the telescopic column (704) penetrates the top inner wall of the outer mounting sleeve (701). A plurality of first positioning holes (706) are provided on one side of the telescopic column (704). A first positioning rod (705) is movably provided on one side of the outer mounting sleeve (701). The first positioning rod (705) and the first positioning holes (706) are adapted to each other. A limiting structure (8) is fixedly provided on the top of the telescopic column (704).

3. The test apparatus for a wind turbine gearbox according to claim 2, characterized in that: The limiting structure (8) includes an adjusting seat (801) fixedly installed with the telescopic column (704). The top of the adjusting seat (801) is provided with an installation groove. A sliding rod (802) is fixedly installed in the installation groove. A slider (803) is movably installed on the sliding rod (802). The slider (803) is movably connected to the front inner wall and the back inner wall of the installation groove. A vertical rod (804) is fixedly installed on the top of the slider (803). A fixing block (805) is fixedly installed on the top of the vertical rod (804). A fixing block (805) is fixedly installed on the top of the fixing block (805). An arc-shaped plate (806) is provided, and a plurality of second springs (807) are fixedly provided on one side of the arc-shaped plate (806). The ends of the plurality of second springs (807) away from the arc-shaped plate (806) are fixedly provided with the same clamping plate (808). An anti-slip pad is fixedly provided on the side of the clamping plate (808) away from the second springs (807). A plurality of internal threaded holes (809) are provided on one side of the adjusting seat (801). A second positioning hole is provided on one side of the slider (803). A second positioning rod (810) is movably provided in the internal threaded hole (809).

4. The test apparatus for a wind turbine gearbox according to claim 3, characterized in that: The mounting groove is provided with limiting grooves on both the front and back inner walls, and the slider (803) is fixedly provided with limiting blocks on both the front and back sides, and the limiting blocks and limiting grooves are compatible.

5. The test apparatus for a wind turbine gearbox according to claim 1, characterized in that: The locking structure (15) includes a hinge seat (151) fixedly installed with the inner wall of the sealing cover (14) and a top rod (152) movably installed with the sealing cover (14). A lock frame (153) is movably provided inside the hinge seat (151). A third spring (154) is fixedly provided on one side of the lock frame (153). The end of the third spring (154) away from the lock frame (153) is fixedly connected to the inner wall of the sealing cover (14).

6. The test apparatus for a wind turbine gearbox according to claim 5, characterized in that: The sealing cover (14) has a through hole on one side of its inner wall, and a sealing ring is provided on the inner wall of the through hole. The inner wall of the sealing ring is movably connected to the top rod (152). A pull handle is fixedly provided at one end of the top rod (152). A fourth spring is sleeved on the top rod (152). One end of the fourth spring is fixedly connected to the pull handle, and the other end of the fourth spring is fixedly connected to the sealing cover (14).

7. The test apparatus for a wind turbine gearbox according to claim 1, characterized in that: The bottom of the box (1) is fixed with four support legs arranged in a rectangular shape. The bottom of each of the four support legs is provided with an anti-slip pad. The top of the placement plate (10) is provided with multiple ventilation holes.

8. A method of using a test apparatus for a wind turbine gearbox as described in any one of claims 1 to 7, characterized in that: The method of use includes the following steps: S1. First, place the gearbox to be tested on the top of the placement plate (10). Then, adjust the position of the two sets of height adjustment structures (7) according to the length of the gearbox. Start the motor (5) through the control panel (2). The motor (5) drives the bidirectional threaded rod (6). The bidirectional threaded rod (6) then drives the two connecting plates (4) to move closer and further apart. The connecting plates (4) then drive the top height adjustment structure (7). When the position of the height adjustment structure (7) is appropriate, turn off the motor (5) through the control panel (2) to realize the position adjustment of the height adjustment structure (7). S2. Pull the first positioning rod (705) outward so that it is disengaged from the first positioning hole (706). Under the rebound force of the first spring (702), the guide plate (703) drives the telescopic column (704) to move upward. The telescopic column (704) then drives the adjusting seat (801) to move upward. The adjusting seat (801) then drives the slider (803), the upright (804), the clamping plate (808) and the arc plate (806) to move upward. When the height of the clamping plate (808) is aligned with the central axis of the gearbox, insert the first positioning rod (705) back into the first positioning hole (706) to achieve height adjustment of the limiting structure (8). S3. Rotate the second positioning rod (810) counterclockwise to disengage it from the internal threaded hole (809) and the second positioning hole on one side of the slider (803). Then push the slider (803) towards the gearbox. The slider (803) drives the upright rod (804), the upright rod (804) drives the fixing block (805), the fixing block (805) drives the arc plate (806), the arc plate (806) drives the second spring (807) and the clamping plate (808). When the clamping plate (808) is tightly attached to one side of the gearbox, screw the second positioning rod (810) clockwise into the internal threaded hole (809) and insert it into the second positioning hole to achieve the positioning of the slider (803) and thus complete the limiting of the gearbox. S4. Lift up the sealing cover (14) so ​​that the inner walls on both sides of the sealing cover (14) are in contact with the side of the two sets of support plates (12) that are far away from each other. Then press down. The sealing cover (14) drives the locking frame (153) to move down. The locking frame (153) is in contact with the inclined surface of the locking block (13). The locking block (13) squeezes the locking frame (153). The locking frame (153) rotates and squeezes the third spring (154) on one side. When the locking frame (153) and the inclined surface of the locking block (13) are no longer in contact, the third spring (154) applies a pushing force to the locking frame (153) so that it is locked on the locking block (13) to realize the installation of the sealing cover (14). After the sealing cover (14) completes the sealing of the gearbox to be tested, the refrigerator (11) can be controlled through the control panel (2) to carry out the cold resistance test. S5. After the test is completed, simultaneously squeeze the four push rods (152) on the sealing cover (14). The push rods (152) squeeze the locking frame (153). After the locking frame (153) and the locking block (13) are separated, the sealing cover (14) can be removed, and then the gearbox can be taken out.

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