CN116481806B - Wind power gear box bearing test bed capable of symmetrically eliminating load - Google Patents
Wind power gear box bearing test bed capable of symmetrically eliminating load Download PDFInfo
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- CN116481806B CN116481806B CN202310285065.4A CN202310285065A CN116481806B CN 116481806 B CN116481806 B CN 116481806B CN 202310285065 A CN202310285065 A CN 202310285065A CN 116481806 B CN116481806 B CN 116481806B
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- 238000012360 testing method Methods 0.000 title claims abstract description 152
- 239000003921 oil Substances 0.000 claims abstract description 58
- 238000005461 lubrication Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000010687 lubricating oil Substances 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 57
- 238000009434 installation Methods 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000008030 elimination Effects 0.000 abstract description 8
- 238000003379 elimination reaction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a bearing test bed of a wind power gear box for symmetrically eliminating load, which comprises a supporting device, a driving device, a loading device and a test device, wherein the loading device has symmetry, and when axial force is loaded in the test process, the axial force born by a bearing to be waited is mutually offset, so that the symmetrical elimination of the axial force is realized; the service life of the accompanying bearing is prolonged; the loading disc is provided with a test bearing cavity and matched with an end cover of an inner ring and an outer ring of the test bearing to form a closed space, an oil inlet and outlet hole is formed in the cavity of the loading disc, lubricating oil flows out through a lower oil hole after entering a lubrication condition for providing a bearing from an upper oil hole, and is pumped back into the upper oil hole again after being filtered and cooled to form a set of circulating cooling lubrication system, so that the cooling and lubrication of the test bearing are met; the whole machine is symmetrically distributed, when axial force loading is carried out, the axial forces born by the four accompanying bearings are mutually offset, so that symmetrical load elimination is realized, and two gear box bearings can be tested at the same time.
Description
Technical Field
The invention relates to the field of testing devices for wind power gear box bearing performance, in particular to a symmetrical load-eliminating wind power gear box bearing test bed which can simulate the actual working condition of a gear box bearing, simulate the actual load of the gear box bearing, realize symmetrical load elimination of a servo bearing and realize independent circulating lubrication of a test bearing.
Background
With the increasing problem of energy, the development of sustainable energy has been of great concern. Wind energy is a high-quality sustainable energy source. The wind power gear box bearing is an important part which is easy to fail in the wind power generation set, so how to design and test the qualified gear box bearing is always one of the bottlenecks puzzling the development of the wind power industry in China.
Most gearbox bearing test stands today transmit torque in a mostly beginning-to-end manner. The method not only reduces the inspection efficiency of the manufactured test bed, increases the occupied area and increases the cost; deviations in the transmission and fatigue damage to the components are also liable to occur. In the loading process, the servo bearing and the test bearing are stressed together, so that the service life of the servo bearing is shortened.
Disclosure of Invention
The invention aims to provide a wind power gear box bearing test bed capable of symmetrically eliminating load, which can simulate the real rotation level and the real load level of a gear box bearing during working, can realize the symmetrical load elimination of a servo bearing and can realize the independent circulation lubrication of the test bearing; the method solves the problems that most of gearbox bearing test tables at present transmit torque in a mode from beginning to end, and the manufactured test table is reduced in test efficiency, increased in occupied area and increased in cost; deviations in the transmission and fatigue damage to the components are also liable to occur. In the loading process, the servo bearing and the test bearing are stressed together, so that the service life of the servo bearing is shortened.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the wind power gear box bearing test bed is characterized by comprising a foundation 1, a servo device 2, a driving device 3, a loading device 4 and a test device 5, wherein the foundation 1 is T-shaped, two ends of a main body part are respectively fixed with a baffle 11, the driving device 3 is arranged at one end of the foundation 1 extending out, the servo device 2, the loading device 4 and the test device 5 are fixedly arranged on the main body of the foundation 1, the servo device 2 is positioned in the middle part of the foundation 1, and the loading device 4 is close to two sides of the foundation 1 and is arranged at the inner side of the baffle 11; all the components on the whole test bed are symmetrically distributed.
The foundation 1 is welded by the steel plate, meets the supporting requirement, simultaneously saves material loss, and 8 notches for placing radial oil cylinders are formed above the foundation 1 and are used for accurately positioning the oil cylinders and the test device 5.
The servo device 2 is divided into a bearing seat 21, a tapered roller servo bearing 22, a cylindrical roller servo bearing 24, a left servo bearing outer ring end cover 26, a right servo bearing outer ring end cover 27, a left servo bearing inner ring end cover 28 and a right servo bearing inner ring end cover 29; the bearing seat 21 is a supporting matrix of the whole servo device 2 and is positioned in the center of the foundation 1, and the bottom of the bearing seat is connected with the foundation 1 through bolts to ensure the stability of the servo device 2; the tapered roller servo bearing 22 and the cylindrical roller servo bearing 24 are in interference fit with the transmission shaft 33, and the outer ring is fixed on the inner cavity of the bearing seat 21 and is used for supporting the whole transmission shaft 33 and ensuring the normal rotation transmission of the transmission shaft 33; the left servo bearing outer ring end cover 26, the right servo bearing outer ring end cover 27, the left servo bearing inner ring end cover 28 and the right servo bearing inner ring end cover 29 are common parts for bearing installation and positioning, and lock the installation positions of the four servo bearings together with the shaft shoulders to prevent axial movement; meanwhile, the two servo bearing cavities are relatively closed, so that dust and sundries are prevented from entering to cause the servo bearing to fail.
The driving device 3 is a standard gear transmission structure and is divided into a motor 31, a speed reducer 32, a transmission shaft 33 and a gear set 34; the motor 31 and the speed reducer 32 are standard components, and the selection principle depends on the power and the rotating speed required by the test; the transmission shaft 33 is an important part of the whole driving device 3, a boss is arranged in the middle of the transmission shaft and is connected with the gear set through a bolt, so that the transmission shaft is driven by the motor 31 to rotate, and two ends of the transmission shaft are connected with the testing device 5 to transmit torque required by a test; the gear set 34 has two gears in total, the driving gear 341 is mounted on the speed reducer 32, the driven gear 342 is mounted on the transmission shaft 33, and the purpose of gear transmission is that it can ensure the stability of transmission, the accuracy of torque transmission and effectively shorten the transmission distance.
The number of the loading devices 4 is two, and the two loading devices are symmetrically distributed on the left and right sides of the test bed, and one explanation is selected due to the fact that the structures are the same; the loading device 4 is divided into a loading disc 41, an axial loading oil cylinder group 42, a radial loading oil cylinder group 43 and an oil cylinder support frame 44; the cavity of the loading disc 41 is used for installing a test bearing 52, two axial oil cylinder lugs are arranged on the end face, and four radial oil cylinder lugs are arranged on the bottom face; is the key of the whole loading device 4, and is a pivot for transmitting axial force and radial force to the test bearing 52; the axial loading cylinder group 42 consists of two axial cylinders, is mounted on a cylinder support frame 44, and is fixed through bolts to provide axial force for the test device 5; the radial loading oil cylinder group 43 consists of four radial oil cylinders, is arranged in a notch of the foundation 1 and is fixed through bolts to provide radial force for the test device 5; the cylinder support frames 44 are welded by steel plates and are arranged on two sides of the foundation 1, and the function of the cylinder support frames is to fix two axial cylinders.
The test device 5 is divided into a test short shaft 51, a test bearing 52, a test bearing outer ring end cover 53 and a test bearing inner ring end cover 54; the test short shaft 51 is in interference fit with the inner ring of the test bearing 52 through bolt connection fit with the transmission shaft 33, and provides torque for the test bearing 52; the test bearing 52 is arranged on the test short shaft 51, the inner ring rotates along with the rotation, and the outer ring is fixed in the loading disc 41, so that the loading disc can be loaded accurately; the test bearing outer ring end cover 53 and the test bearing inner ring end cover 54 are common parts for bearing installation and positioning, and the installation position of the locking test prevents axial movement; meanwhile, the bearing cavity of the loading disc 41 is sealed, dust and sundries are prevented from entering to cause failure of the test bearing, and a foundation is laid for a circulating lubrication system.
The loading device 4 has symmetry, when axial force is loaded in the test process, the axial force born by the accompanying bearings are mutually offset, so that the symmetrical load elimination of the axial force is realized, and the service life of the accompanying bearings is prolonged.
The loading disc 41 is provided with a cavity of the test bearing 52 and is matched with an end cover of an inner ring and an outer ring of the test bearing to form a closed space, an oil inlet and outlet hole is arranged on the cavity, lubricating oil flows out through a lower oil hole after entering a lubrication condition for providing the bearing from an upper oil hole, and is pumped back into the upper oil hole again after being filtered and cooled to form a set of circulating cooling lubrication system.
The beneficial effects of the invention are as follows:
the test bed designed by the invention can test two gear box bearings at the same time. The gear transmission and the middle driving are used for reducing the driving distance and improving the driving stability. The influence of axial force on the servo bearing is eliminated through the symmetrical structure, and the service life of the servo bearing is prolonged. The self-circulation cooling and lubricating system is designed to meet the cooling and lubricating requirements of the test bearing.
Drawings
FIG. 1 is an overall structure overview of a bearing test stand of a wind power gear box of the invention;
FIG. 2 is a cross-sectional view of the whole structure of the bearing test stand of the wind power gear box of the invention;
FIG. 3 is a schematic cross-sectional view of a wind power gearbox bearing test stand servo device according to the present invention;
FIG. 4 is a schematic diagram of a driving structure of a bearing test stand of a wind power gear box according to the invention;
FIG. 5 is an overview of the wind turbine gearbox bearing test stand loading device of the present invention;
FIG. 6 is a schematic diagram of a split structure of a test device of a bearing test stand of a wind power gear box;
in the figure: the test device comprises a foundation-1, a servo device-2, a driving device-3, a loading device-4, a test device-5, a bearing seat-21, a tapered roller servo bearing-22, a cylindrical roller servo bearing-24, a left servo bearing outer ring end cover-26, a right servo bearing outer ring end cover-27, a left servo bearing inner ring end cover-28, a right servo bearing inner ring end cover-29, a motor-31, a speed reducer-32, a transmission shaft-33, a gear set-34, a driving gear-341, a driven gear-342, a loading disc-41, an axial loading cylinder group-42, a radial loading cylinder group-43, a cylinder support frame-44, a test short shaft-51, a test bearing-52, a test bearing outer ring end cover-53 and a test bearing inner ring end cover-54.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the present invention are all within the protection scope of the present invention.
As shown in fig. 1 and 2, the invention comprises five parts including a foundation 1, a servo device 2, a driving device 3, a loading device 4 and a test device 5, wherein the foundation 1 is in a T shape, two ends of a main body part are respectively fixed with a baffle 11, the driving device 3 is arranged at one end of the foundation 1 extending out, the servo device 2, the loading device 4 and the test device 5 are fixedly arranged on the main body of the foundation 1, the servo device 2 is positioned at the middle part of the foundation 1, and the loading device 4 is close to two sides of the foundation 1 and is positioned at the inner side of the baffle 11; all the components on the whole test bed are symmetrically distributed.
The foundation 1 is welded by steel plates, meets the supporting requirement, saves material loss simultaneously, and is provided with 8 notches for placing radial oil cylinders above the foundation 1, and accurately positions the oil cylinders and the test device 5
The structural form, positional relationship, and assembly relationship of each part will be described in detail with reference to fig. 3 to 6.
As shown in fig. 3, the servo apparatus 2 is divided into a bearing housing 21, a tapered roller servo bearing 22, a cylindrical roller servo bearing 24, a left servo bearing outer ring end cover 26, a right servo bearing outer ring end cover 27, a left servo bearing inner ring end cover 28, and a right servo bearing inner ring end cover 29; the bearing seat 21 is a supporting matrix of the whole servo device 2 and is positioned in the center of the foundation 1, and the bottom of the bearing seat is connected with the foundation 1 through bolts to ensure the stability of the servo device 2; the tapered roller servo bearing 22 and the cylindrical roller servo bearing 24 are in interference fit with the transmission shaft 33, and the outer ring is fixed on the inner cavity of the bearing seat 21 and is used for supporting the whole transmission shaft 33 and ensuring the normal rotation transmission of the transmission shaft 33; the left servo bearing outer ring end cover 26, the right servo bearing outer ring end cover 27, the left servo bearing inner ring end cover 28 and the right servo bearing inner ring end cover 29 are common parts for bearing installation and positioning, and lock the installation positions of the four servo bearings together with the shaft shoulders to prevent axial movement; meanwhile, the two servo bearing cavities are relatively closed, so that dust and sundries are prevented from entering to cause the servo bearing to fail. Due to the symmetry of the whole test bed structure, when axial force is loaded, the axial forces born by the accompanying bearings can be mutually offset, so that symmetrical load elimination is realized.
As shown in fig. 4, the driving device 3 is a standard gear transmission structure, and is divided into a motor 31, a speed reducer 32, a transmission shaft 33 and a gear set 34; the motor 31 and the speed reducer 32 are standard components, and the selection principle depends on the power and the rotating speed required by the test; the transmission shaft 33 is an important part of the whole driving device 3, a boss is arranged in the middle of the transmission shaft and is connected with the gear set through a bolt, so that the transmission shaft is driven by the motor 31 to rotate, and two ends of the transmission shaft are connected with the testing device 5 to transmit torque required by a test; the gear set 34 has two gears in total, the driving gear 341 is mounted on the speed reducer 32, the driven gear 342 is mounted on the transmission shaft 33, and the purpose of gear transmission is that it can ensure the stability of transmission, the accuracy of torque transmission and effectively shorten the transmission distance.
As shown in fig. 5, there are two loading devices 4, which are symmetrically distributed on the left and right sides of the test bed, and one explanation is selected due to the same structure; the loading device 4 is divided into a loading disc 41, an axial loading oil cylinder group 42, a radial loading oil cylinder group 43 and an oil cylinder support frame 44; the cavity of the loading disc 41 is used for installing a test bearing 52, two axial oil cylinder lugs are arranged on the end face, and four radial oil cylinder lugs are arranged on the bottom face; is the key of the whole loading device 4, and is a pivot for transmitting axial force and radial force to the test bearing 52; the axial loading cylinder group 42 consists of two axial cylinders, is mounted on a cylinder support frame 44, and is fixed through bolts to provide axial force for the test device 5; the radial loading oil cylinder group 43 consists of four radial oil cylinders, is arranged in a notch of the foundation 1 and is fixed through bolts to provide radial force for the test device 5; the cylinder support frames 44 are welded by steel plates and are arranged on two sides of the foundation 1, and the function of the cylinder support frames is to fix two axial cylinders.
As shown in fig. 6, the test apparatus 5 is divided into a test stub shaft 51, the test bearing 52, a test bearing outer ring end cap 53, and a test bearing inner ring end cap 54; the test short shaft 51 is in interference fit with the inner ring of the test bearing 52 through bolt connection fit with the transmission shaft 33, and provides torque for the test bearing 52; the test bearing 52 is arranged on the test short shaft 51, the inner ring rotates along with the rotation, and the outer ring is fixed in the loading disc 41, so that the loading disc can be loaded accurately; the test bearing outer ring end cover 53 and the test bearing inner ring end cover 54 are common parts for bearing installation and positioning, and the installation position of the locking test prevents axial movement; meanwhile, the bearing cavity of the loading disc 41 is sealed, dust and sundries are prevented from entering to cause failure of the test bearing, and a foundation is laid for a circulating lubrication system.
As a possible implementation, the loading device 4 has symmetry, and when the axial force is loaded in the test process, the axial forces born by the accompanying bearings cancel each other out, so that the symmetrical load elimination of the axial force is realized, and the service life of the accompanying bearings is prolonged.
As a possible implementation manner, the loading disc 41 is provided with a cavity of the test bearing 52 and a closed space formed by matching the cavity with an end cover of an inner ring and an outer ring of the test bearing, an oil inlet and outlet hole is arranged on the cavity, lubricating oil flows out through a lower oil hole after entering a lubrication condition for providing the bearing from an upper oil hole, and is pumped back into the upper oil hole after being filtered and cooled, so that a set of circulating cooling lubrication system is formed.
As a possible implementation manner, when the test stand of this embodiment works, the transmission shaft 33 is connected with the test short shaft 51 and locked to rotate, and the forces of the radial cylinder group 43 and the axial cylinder group 42 act on the loading disc 41, so that the loading disc 41 transfers the forces to the test bearing 52, thereby realizing loading of the test bearing. In the driving device 3, the motor 31 drives the gear box 32 and the transmission shaft 33 to finally drive the test short shaft 51, so that the test bearing 52 is driven.
As a possible implementation manner, when the test stand of this embodiment works, the outer ring of the test bearing 52 is in interference fit with the inner ring of the loading disc 41. At the moment, the side part of the inner ring of the test bearing 52 is attached to the shaft shoulder of the test short shaft 51, and the inner ring is tightly connected to the test short shaft 51 through interference fit, so that axial movement is prevented during the test. The forces of the radial cylinder group 43 and the axial cylinder group 42 act on the loading disc 41, and the forces are directly transmitted to the test bearing 52 through interference fit, so that the loading of the whole test device 5 is realized.
The testing machine adopts gear transmission, the arrangement position is positioned in the center of the whole machine to ensure the stability of driving, and the torque transmission distance can be shortened to enable the driving to be accurate while the driving requirements of two test bearings are met. The whole machine is symmetrically distributed, each loading disc is provided with a left axial force loading oil cylinder and a right axial force loading oil cylinder, the four radial oil cylinders on the bottom surface are linearly and uniformly distributed, and the test bearing test of 750mm-1250mm inner diameter, 1090mm-1800mm outer diameter, 2000 axial force and below and 9500 radial force and below can be met through calculation.
Due to the symmetry of the whole machine structure, when axial force loading is carried out, the axial forces born by the four accompanying bearings can be mutually offset, so that symmetrical load elimination is realized.
In test bearing lubrication and heat dissipation, this testing machine has designed an autonomous circulation lubrication system: the cavity of the loading disc bearing is sealed, oil dripping lubrication is carried out through the oil inlet at the upper part, and after oil passes through the oil outlet at the lower part, the oil is filtered and then pumped back to the oil inlet again, so that heat dissipation and lubrication of autonomous circulation are realized.
The gearbox is an important mechanical component in the wind turbine generator, the gearbox bearing is one of parts with higher fault generation rate, and the invention can truly simulate the load of the gearbox bearing and test two gearbox bearings simultaneously through a symmetrical structure. Has very important significance for checking the quality of the gear box and guiding the optimized design and production of the gear box bearing.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, and that the foregoing embodiments and description are merely preferred embodiments of the invention, and are not intended to limit the invention, but that various changes and modifications may be made therein without departing from the novel spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The wind power gear box bearing test bed is characterized by comprising a foundation (1), a servo device (2), a driving device (3), a loading device (4) and a test device (5), wherein the foundation (1) is T-shaped, two ends of a main body part are respectively fixed with a baffle plate (11), the driving device (3) is arranged at one end of the foundation (1) extending out, the servo device (2), the loading device (4) and the test device (5) are fixedly arranged on the main body of the foundation (1), the servo device (2) is positioned in the middle part of the foundation (1), and the loading device (4) is close to two sides of the foundation (1) and is arranged inside the baffle plates (11); all parts on the whole test bed are symmetrically distributed; the servo device (2) is divided into a bearing seat (21), a tapered roller servo bearing (22), a cylindrical roller servo bearing (24), a left servo bearing outer ring end cover (26), a right servo bearing outer ring end cover (27), a left servo bearing inner ring end cover (28) and a right servo bearing inner ring end cover (29); the bearing seat (21) is a supporting matrix of the whole servo device (2), is positioned in the center of the foundation (1), and is connected with the foundation (1) through bolts at the bottom to ensure the stability of the servo device (2); the tapered roller servo bearing (22) is in interference fit with the inner ring of the cylindrical roller servo bearing (24) and the transmission shaft (33), and the outer ring is fixed on the inner cavity of the bearing seat (21) and is used for supporting the whole transmission shaft (33) and ensuring the normal rotation transmission of the transmission shaft (33); the left servo bearing outer ring end cover (26), the right servo bearing outer ring end cover (27) and the left servo bearing inner ring end cover (28) and the right servo bearing inner ring end cover (29) are common parts for bearing installation and positioning, and the common parts lock the installation positions of the four servo bearings together with the shaft shoulders to prevent axial movement; meanwhile, the two servo bearing cavities are relatively closed, so that dust and sundries are prevented from entering to cause the servo bearing to fail; the driving device (3) is of a standard gear transmission structure and is divided into a motor (31), a speed reducer (32), a transmission shaft (33) and a gear set (34); the motor (31) and the speed reducer (32) are standard components, and the selection principle depends on the power and the rotating speed required by the test; the transmission shaft (33) is an important part of the whole driving device (3), a boss is arranged at the middle part of the transmission shaft and is connected with the gear set through a bolt, so that the transmission shaft is driven by the motor (31) to rotate, and two ends of the transmission shaft are connected with the testing device (5) to transmit torque required by a test; the gear set (34) is provided with two gears in total, a driving gear (341) is arranged on the speed reducer (32), a driven gear (342) is arranged on the transmission shaft (33), and the purpose of gear transmission is that the gear transmission can ensure the stability of transmission and the precision of torque transmission and effectively shorten the transmission distance; the number of the loading devices (4) is two, and the two loading devices are symmetrically distributed on the left and right sides of the test bed, and one explanation is selected due to the same structure; the loading device (4) is divided into a loading disc (41), an axial loading oil cylinder group (42), a radial loading oil cylinder group (43) and an oil cylinder support frame (44); the cavity of the loading disc (41) is used for installing a test bearing (52), two axial oil cylinder lug seats are arranged on the end face, and four radial oil cylinder lug seats are arranged on the bottom face; is the key of the whole loading device (4) and is a pivot for transmitting axial force and radial force to the test bearing (52); the axial loading oil cylinder group (42) consists of two axial oil cylinders, is mounted on an oil cylinder support frame (44) and is fixed through bolts to provide axial force for the test device (5); the radial loading oil cylinder group (43) consists of four radial oil cylinders, is arranged in a notch of the foundation (1) and is fixed through bolts to provide radial force for the test device (5); the oil cylinder support frames (44) are welded by steel plates and are arranged on two sides of the foundation (1), and the oil cylinder support frames are used for fixing two axial oil cylinders; the test device (5) is divided into a test short shaft (51), the test bearing (52), a test bearing outer ring end cover (53) and a test bearing inner ring end cover (54); the test short shaft (51) is in interference fit with the inner ring of the test bearing (52) through bolt connection and fit with the transmission shaft (33), and provides torque for the test bearing (52); the test bearing (52) is arranged on the test short shaft (51), the inner ring rotates along with the rotation, and the outer ring is fixed in the loading disc (41) so as to be accurately loaded; the test bearing outer ring end cover (53) and the test bearing inner ring end cover (54) are common parts for bearing installation and positioning, and the installation position of the test is locked to prevent axial movement; meanwhile, a bearing cavity of the loading disc (41) is sealed, dust and sundries are prevented from entering to cause failure of a test bearing, and a foundation is laid for a circulating lubrication system.
2. The wind turbine gearbox bearing test stand of claim 1, wherein: the foundation (1) is welded by steel plates, meets the supporting requirement, saves material loss simultaneously, and is provided with 8 notches for placing radial oil cylinders above the foundation (1), and accurately positions the oil cylinders and the test device (5).
3. Wind power gearbox bearing test bench according to claim 1, characterized in that the loading means (4) have symmetry, and that when axial forces are loaded during the test, the axial forces to which the co-feed bearings are subjected cancel each other out, achieving a symmetrical load cancellation of the axial forces, contributing to an improved service life of the co-feed bearings.
4. Wind power gear box bearing test bed according to claim 1, characterized in that the cavity of the loading disc (41) for installing the test bearing (52) is matched with the test bearing outer ring end cover (53) and the test bearing inner ring end cover (54) to form a closed space, the cavity is provided with an oil inlet and outlet hole, lubricating oil enters the lubrication condition for providing the bearing from the oil inlet hole and then flows out through the oil outlet hole, and is pumped back to the oil inlet hole after being filtered and cooled to form a set of circulating cooling lubrication system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310285065.4A CN116481806B (en) | 2023-03-22 | 2023-03-22 | Wind power gear box bearing test bed capable of symmetrically eliminating load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310285065.4A CN116481806B (en) | 2023-03-22 | 2023-03-22 | Wind power gear box bearing test bed capable of symmetrically eliminating load |
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| CN116481806A CN116481806A (en) | 2023-07-25 |
| CN116481806B true CN116481806B (en) | 2024-04-09 |
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| CN116818328B (en) * | 2023-08-31 | 2023-11-17 | 昆山奥德鲁自动化技术有限公司 | Bearing working loss and stability detection device |
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| CN114894475A (en) * | 2022-04-24 | 2022-08-12 | 南京工大数控科技有限公司 | Wind power main bearing testing machine with shafting |
| CN217980778U (en) * | 2022-04-24 | 2022-12-06 | 南京工大数控科技有限公司 | Wind power main bearing testing machine with shafting |
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