CN114894473A - Testing device for main shaft system of wind power generation equipment - Google Patents
Testing device for main shaft system of wind power generation equipment Download PDFInfo
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- CN114894473A CN114894473A CN202210323074.3A CN202210323074A CN114894473A CN 114894473 A CN114894473 A CN 114894473A CN 202210323074 A CN202210323074 A CN 202210323074A CN 114894473 A CN114894473 A CN 114894473A
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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
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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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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Abstract
The invention provides a test device of a main shaft shafting of wind power generation equipment, which comprises a driving mechanism, a support frame and a temperature detection assembly, wherein the driving mechanism is arranged on the support frame; the supporting frame is provided with a first connecting structure used for being fixedly connected with a bearing mounting seat of the shafting, an axial loading assembly used for applying axial force to the bearing mounting shaft, a radial loading assembly used for applying radial force to the bearing mounting shaft and an overturning moment loading assembly used for applying overturning moment to the bearing mounting shaft, the output ends of the axial loading assembly and the radial loading assembly are connected with a loading shaft, and the loading shaft is provided with a second connecting structure used for being connected with the bearing mounting shaft; the temperature detection assembly is used for monitoring the temperature of an inner ring and an outer ring of a bearing in the shafting. The test device for the main shaft shafting of the wind power generation equipment provided by the invention effectively solves the technical problem that the test result of the test device for the shafting in the prior art is inaccurate by integrally testing the shafting.
Description
Technical Field
The invention relates to the technical field of shafting testing devices, in particular to a testing device for a main shaft shafting in wind power generation equipment.
Background
Wind power generation is a clean renewable resource. A main shaft system in the wind power generation equipment is one of important components, the main shaft system in the wind power generation equipment structurally comprises a bearing, a bearing installation shaft and a bearing installation seat, and the main shaft system bears unstable wind load in the power generation process. In addition, according to design requirements, the service life of the main shaft system is not less than twenty years, so that the requirement of the main shaft system on quality reliability is extremely high, and the main shaft system needs to be tested after the main shaft system is produced.
When testing the shafting, current testing arrangement only carries out the loading test to the bearing in the shafting, for example, the bulletin number is CN214373338U, Chinese utility model patent that the bulletin date is 2021 year 10 month 08 date has announced a wind-powered electricity generation carousel bearing mechanical properties test device, this testing arrangement includes the frame, connecting piece and actuating system, be equipped with the base on the bottom plate of frame in order to supply the installation of the carousel bearing of waiting to test, the lower extreme of connecting piece passes through the ring flange and waits the carousel bearing assembly connection of test, the upper end of connecting piece is equipped with the loading bearing, the loading board is equipped with on the loading bearing, the loading board is connected with loading cylinder, loading cylinder includes the moment of toppling pneumatic cylinder, axial hydraulic cylinder and radial hydraulic cylinder are in order to exert corresponding direction's power to the connecting piece respectively. During testing, the turntable bearing to be tested is installed on the base, the lower end of the connecting piece is connected with the turntable bearing in an assembling mode, then the driving system drives the connecting piece to rotate, and the loading oil cylinder applies force to the turntable bearing through the connecting piece so as to complete the testing.
The test device has the problems that the test device only applies test force to the bearing in the shaft system, but because the main shaft system of the wind power generation equipment bears large load, the rigidity of the bearing installation shaft and the bearing installation seat can influence the stress of the bearing, and the test result of the test device is greatly different from the actual situation.
Disclosure of Invention
The invention aims to provide a test device for a main shaft system of wind power generation equipment, which aims to solve the technical problem that the test result of the test device on the shaft system is inaccurate in the prior art.
The test device of the main shaft system of the wind power generation equipment adopts the following technical scheme:
the test device for the main shaft system of the wind power generation equipment comprises a driving mechanism, a support frame and a temperature detection assembly, wherein the output end of the driving mechanism is in transmission connection with a bearing mounting shaft of the shaft system; the supporting frame is provided with a first connecting structure used for being fixedly connected with a bearing mounting seat of a shafting, an axial loading assembly used for applying axial force to the bearing mounting shaft, a radial loading assembly used for applying radial force to the bearing mounting shaft and an overturning moment loading assembly used for applying overturning moment to the bearing mounting shaft, the output ends of the axial loading assembly and the radial loading assembly are connected with loading shafts, and the loading shafts are provided with second connecting structures used for being connected with the bearing mounting shaft, so that the axial loading assembly and the radial loading assembly respectively apply corresponding stress to the bearing mounting shaft through the loading shafts; the output end of the overturning moment loading assembly is used for forming pushing fit with the bearing mounting shaft in the axial direction of the bearing mounting shaft so as to directly apply overturning moment to the bearing mounting shaft; the temperature detection assembly is used for monitoring the temperature of an inner ring and an outer ring of a bearing in the shafting.
Has the beneficial effects that: before testing, a bearing mounting seat of a tested shafting is mounted on a support frame through a first connecting structure, one end of a bearing mounting shaft is connected with a driving mechanism in a transmission way, the other end of the bearing mounting shaft is connected with a loading shaft through a second connecting structure, and meanwhile, the output end of an overturning moment loading assembly forms pushing fit with the bearing mounting shaft in the axial direction of the bearing mounting shaft; during testing, the driving mechanism is started firstly to drive the bearing mounting shaft to rotate, meanwhile, each loading assembly is started to apply corresponding stress to the bearing mounting shaft, and the operating state of a bearing in the shaft system is monitored through the temperature detection assembly in the testing process so as to obtain testing data. Compared with the mode of only carrying out the loading test on the bearing in the shafting in the prior art, the test device provided by the invention is used for carrying out the loading test by mounting the whole shafting on the test device, and in the test process, the influence of the rigidity of the bearing mounting frame and the bearing mounting shaft on the bearing can be reflected in the test result, so that the obtained test data can be relatively close to the data in practical use. In addition, the bearing mounting frame is directly fixed on the supporting frame, so that the tested shafting and the testing device form an integral testing system, and the interaction force between the tested shafting and the testing device is the internal force of the system in the testing process, so that the external force interference is avoided, and the testing result is more accurate; in addition, the axial loading assembly and the radial loading assembly apply force through loading the axial bearing mounting shaft, and the overturning moment loading assembly directly applies force to the axial bearing mounting shaft, so that mutual interference of the axial loading assembly, the radial loading assembly and the overturning moment loading assembly is avoided, and the test accuracy is improved.
Furthermore, the support frame includes base and link, the link is removable to be assembled on the base, first connection structure establishes on the link so that the bearing mount pad passes through the link with the base links to each other.
Has the advantages that: wind power generation equipment main shaft shafting is generally great, can be more strenghthened if direct with the shafting installation on the supporting seat, and the link is lighter, links to each other then easier with bearing mount pad and link earlier, and the link that will install again is removable assembly with the base, will be laborsaving relatively.
Further, the base is connected with the connecting frame through a flange.
Has the advantages that: the flange connection is more convenient and stable.
Furthermore, the overturning moment loading assembly is fixedly installed on the connecting frame.
Has the advantages that: when the shafting is installed on the support frame, because the reason of installation accuracy, generally need the output of adjustment overturning moment loading subassembly and bearing installation axle position relation, the design is in order to conveniently adjust overturning moment loading subassembly's output and bearing installation axle position relation when with bearing mount pad fixed connection on the link like this.
Furthermore, a plurality of overturning moment loading assemblies are arranged on the supporting frame, and the overturning moment loading assemblies are uniformly arranged around the axis of the loading shaft at intervals.
Has the advantages that: the arrangement can provide overturning moments of different angles for the bearing mounting shaft in different directions according to test requirements during testing.
Further, the axial loading assembly comprises an axial push-pull piece and an axial loading bearing assembled on the loading shaft, the radial loading assembly comprises a radial push-pull piece and a radial loading bearing assembled on the loading shaft, the output end of each push-pull piece corresponds to the output end of the corresponding loading assembly, and the output end of each push-pull piece is connected with the loading shaft through the corresponding loading bearing so as to apply corresponding stress to the loading shaft.
Has the advantages that: compared with the mode of applying the corresponding stress to the bearing installation shaft through the bearing bush, the bearing realizes the application of the corresponding stress to the bearing installation shaft by means of the self structure rotation, so that the requirement on the smoothness of the outer surface of the bearing installation shaft is not high, the production cost is reduced, and the bearing installation shaft cannot be abraded in the force application process.
Furthermore, bearing seats are respectively installed on the axial loading bearing and the radial loading bearing, and the output ends of the axial push-pull piece and the radial push-pull piece are respectively connected to the corresponding bearing seats.
Has the advantages that: the axial push-pull piece and the radial push-pull piece are respectively connected with the corresponding loading bearings through the bearing seats, so that the stability of the push-pull piece when applying force to the loading bearings can be improved.
Further, a speed reducer and a torque sensor are arranged at the output end of the driving mechanism.
Has the advantages that: the speed reducer can reduce the rotating speed of the output end of the driving mechanism and increase the torque of the output end of the driving mechanism; the torque sensor can detect the torque of the output end of the driving mechanism, so that the torque of the output end of the driving mechanism can be more accurately adjusted according to test requirements.
Further, the temperature monitoring assembly comprises temperature sensors and a temperature detection system, the temperature sensors are respectively arranged on an inner ring and an outer ring of the bearing in the shafting, and each temperature sensor is connected with the temperature detection system to transmit detected temperature data to the temperature detection system.
Has the advantages that: the sensors are directly arranged on the inner ring and the outer ring of the bearing, so that the temperature of the inner ring and the temperature of the outer ring can be detected more accurately, and the test accuracy is improved.
Furthermore, each temperature sensor is in wired connection with the temperature detection system, a conductive slip ring is rotatably assembled on the bearing mounting shaft or the loading shaft, and the temperature sensor on the bearing inner ring is connected with the temperature detection system through the conductive slip ring.
Has the advantages that: the data transmission is more stable by adopting wired connection, and the stability of the test device during operation is improved.
Drawings
FIG. 1 is a schematic view of a test device for a main shaft shafting of a wind power generation device provided by the invention during testing;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is an enlarged view at C in fig. 1.
The names of the components corresponding to the corresponding reference numerals in the drawings are:
100. a drive motor; 101. a speed reducer; 102. a torque sensor; 103. a coupling; 200. a support frame; 201. a base; 202. a first connecting flange; 203. a connecting frame; 204. a mounting seat connecting hole; 205. a second connecting flange; 206. a loading shaft; 207. a stop flange; 208. installing a shaft connecting hole; 209. an axial push-pull member; 210. axially loading the bearing seat; 211. An axial force sensor; 212. axially loading the bearing; 213. a radial push-pull member; 214. radially loading the bearing seat; 215. a radial force sensor; 216. a radial load bearing; 217. overturning moment push-pull pieces; 218. an overturning moment loading bearing seat; 219. An overturning moment force sensor; 220. an overturning moment loading bearing; 221. a conductive slip ring; 222. a first annular step; 223. Sealing a baffle plate; 300. a bearing mount; 301. a bearing mounting shaft; 302. a first bearing under test; 303. a first outer ring temperature sensor; 304. a first inner ring temperature sensor; 305. a second bearing under test; 306. a second outer ring temperature sensor; 307. a second inner ring temperature sensor; 308. a second annular step.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the embodiments of the present invention, terms such as "first" and "second" may be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the appearances of the phrase "comprising an … …" or similar limitation may be present without necessarily excluding the presence of additional identical elements in the process, method, article, or apparatus that comprises the same elements.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the invention, unless otherwise explicitly specified or limited, the term "provided" should be understood broadly, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, which may or may not be detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Embodiment 1 of the test apparatus for a main shaft shafting of a wind power generation equipment of the present invention:
as shown in fig. 1, the test apparatus for a main shaft shafting of a wind power generation device provided by this embodiment includes a driving mechanism, a support frame 200 and a temperature detection assembly, where the support frame 200 is provided with a first connection structure, an axial loading assembly, a radial loading assembly and an overturning moment loading assembly. The test device also comprises a temperature detection assembly for monitoring the temperature of the inner ring and the outer ring of the bearing in the shafting. During testing, firstly, the tested shafting is assembled, then the bearing mounting seat 300 of the tested shafting is fixedly connected to the support frame 200 through the first connecting structure, the axial loading assembly, the radial loading assembly and the overturning moment loading assembly are utilized to respectively apply corresponding stress to the bearing mounting shaft 301 of the tested shafting, and the temperature of the bearing in the tested shafting is monitored through the temperature detection assembly in the testing process so as to obtain test data.
In this embodiment, as shown in fig. 1 and fig. 2, the supporting frame 200 includes a connecting frame 203 and a base 201, the base 201 is integrally a box structure, a mounting opening is provided on the base 201, the mounting opening is arranged facing the right, a first connecting flange 202 is arranged at the mounting opening, a second connecting flange 205 is provided on the outer circumferential surface of the connecting frame 203, and the connecting frame 203 is connected with the base 201 through the first and second connecting flanges. In addition, the first connecting structure is arranged on the connecting frame 203, the first connecting structure is a mounting seat connecting hole 204, and during the test, the bearing mounting seat 300 is fixedly connected to the supporting frame 200 through the mounting seat connecting hole 204.
In this embodiment, as shown in fig. 1, the supporting frame 200 is further provided with an axial loading assembly and a radial loading assembly, the axial loading assembly includes an axial push-pull member 209 and an axial loading bearing 212, the axial push-pull member 209 is fixedly mounted on the supporting frame 200, and an output end of the axial push-pull member 209 extends in a horizontal direction. The radial push-pull member 213 is fixedly installed on the support frame 200, the output end of the radial push-pull member 213 extends along the vertical direction, the output ends of the axial push-pull member 209 and the radial push-pull member 213 are connected with the loading shaft 206, the axis of the loading shaft 206 extends along the horizontal direction, the output end of the axial push-pull member 209 and the loading shaft 206 are coaxially arranged, and the axis of the output end of the radial push-pull member 213 and the axis of the loading shaft 206 are mutually perpendicular.
In this embodiment, as shown in fig. 1 and 4, the axial loading bearing 212 is a tapered roller bearing, the loading shaft 206 is provided with a first annular step at one end facing the axial push-pull member 209, and the axial loading bearing 212 is sleeved on the outer peripheral surface of the annular step. In this embodiment, the axial loading bearing 212 is installed in the axial loading bearing seat 210, and the outer ring of the axial loading bearing 212 and the output end of the axial push-pull member 209 are connected and fixed through the axial loading bearing seat 210, so that the axial push-pull member 209 applies an acting force to the outer ring of the axial loading bearing 212 through the axial loading bearing seat 210, and the acting force is applied to the loading shaft 206 through the inner ring of the axial loading bearing 212, thereby implementing the application of the axial push-pull member 209 to the loading shaft 206. In addition, an axial force sensor 211 is arranged between the axial loading bearing seat 210 and the output end of the axial push-pull piece 209 to detect the magnitude of the output force of the axial push-pull piece 209. In addition, it should be noted that one side of the axial loading bearing seat 210 is provided with a blocking plate 223, and the blocking plate 223 forms a sealing cavity in cooperation with the axial loading bearing seat 210 for storing grease.
In this embodiment, as shown in fig. 1 and 4, the inner ring of the radial loading bearing 216 is interference-fitted on the loading shaft 206, the radial loading bearing 216 is installed in the radial loading bearing seat 214, and the outer ring of the radial loading bearing 216 is fixedly connected with the output end of the radial push-pull member 213 through the radial loading bearing seat 214, so that the radial push-pull member 213 applies an acting force to the outer ring of the radial loading bearing 216 through the radial loading bearing seat 214, and the acting force is applied to the loading shaft 206 through the inner ring of the radial loading bearing 216, thereby implementing the application of the radial push-pull member 213 to the loading shaft 206. In addition, a radial force sensor 215 is arranged between the radial loading bearing seat 214 and the output end of the radial push-pull member 213 to detect the magnitude of the output force of the radial push-pull member 213. The radial load bearing 216 is arranged at a distance from the axial load bearing 212 in the axial direction of the load shaft 206.
In this embodiment, a stop flange 207 is disposed on an end of the loading shaft 206 opposite to the axial push-pull member 209, the stop flange 207 is configured to form a push-push fit with the bearing mounting shaft 301 of the tested shafting in the axial direction of the loading shaft 206, a second connection structure is disposed on the stop flange 207, the second connection structure is a mounting shaft connection hole 208, and during the test, the bearing mounting shaft 301 is fixedly connected to the loading shaft 206 through the mounting shaft connection hole 208.
In this embodiment, the overturning moment loading assembly includes an overturning moment pushing and pulling member 217 and an overturning moment loading bearing 220, the overturning moment pushing and pulling member 217 is fixedly installed on the connecting frame 203, the overturning moment loading bearing 220 is installed in the overturning moment loading bearing seat 218, and the overturning moment pushing and pulling member 217 is connected with the outer ring of the overturning moment loading bearing 220 through the overturning moment loading bearing seat 218. In this embodiment, a second annular step is provided at one end of the bearing mounting shaft 301 facing the loading shaft 206 in the shafting to be tested, during the test, the overturning moment loading bearing 220 is assembled on the second annular step, the overturning moment push-pull member 217 transmits the acting force to the outer ring of the overturning moment loading bearing 220 through the overturning moment loading bearing seat 218, and the acting force is transmitted to the bearing mounting shaft 301 through the inner ring of the overturning moment loading bearing 220, thereby realizing the application of the overturning moment to the bearing mounting shaft 301 during the use.
It should be emphasized that the second annular step is the structure on the bearing mounting shaft 301 in the shafting under test. In other embodiments, if the bearing mounting shaft 301 in the shafting under test is not provided with the second annular step, the inner ring of the overturning moment loading bearing 220 may be directly interference-fitted on the bearing mounting shaft 301.
In this embodiment, the overturning moment push-pull member 217 is arranged in plural numbers, specifically 12. The overturning moment push-pull members 217 are uniformly arranged around the circumferential direction of the loading shaft 206 at intervals, the axis of the output end of each overturning moment push-pull member 217 is arranged around the axis of the bearing mounting shaft 301 at intervals in parallel, and the output end of each overturning moment push-pull member 217 can apply overturning moment to the bearing mounting shaft 301 respectively. It should be emphasized that, in the present embodiment, the output end of each push-pull member corresponds to the output end of the corresponding loading assembly.
In this embodiment, each overturning moment pushing and pulling member 217 corresponds to the same overturning moment loading bearing 220 in consideration of the axial dimension of the bearing mounting shaft 301, and in other embodiments, each overturning moment pushing and pulling member 217 may also correspond to different overturning moment loading bearings 22.
In the present embodiment, as shown in fig. 2 and 4, the inner ring of the overturning moment loading bearing 220 and the inner ring of the axial loading bearing 212 are respectively fixed to the corresponding shafts by bolts.
In this embodiment, the temperature monitoring subassembly includes temperature sensor and temperature detecting system, and temperature sensor includes a plurality ofly, and each temperature sensor arranges respectively on the inner circle and the outer lane of bearing in the shafting of being examined during the experiment, and each temperature sensor is connected with temperature detecting system respectively to transmit the temperature information who detects to temperature detecting system, temperature detecting system carries out the analysis in order to confirm the running state of bearing to temperature information.
In this embodiment, each temperature sensor is connected to the temperature detection system by wire, and since the outer ring of the tested bearing does not rotate with the bearing mounting shaft 301, the temperature sensor arranged on the outer ring of the tested bearing can be directly connected to the temperature detection system. However, the inner ring of the tested bearing rotates synchronously with the bearing mounting shaft 301, and in order to enable the temperature sensor arranged on the inner ring of the bearing to be connected with the temperature detection system, as shown in fig. 1, the loading shaft 206 is provided with the conductive slip ring 221, wiring channels are arranged inside the bearing mounting shaft 301 and the loading shaft 206, and connection lines between the temperature sensor on the inner ring of the bearing and the temperature detection system are respectively connected to the conductive slip ring 221 through the wiring channels inside the bearing mounting shaft 301 and the loading shaft 206, and then are switched to the temperature detection system through the conductive slip ring 221.
In this embodiment, the axial push-pull member 209, the radial push-pull member 213, and the overturning moment push-pull member 217 are all hydraulic cylinders.
In this embodiment, the driving mechanism is a driving motor 100, and the driving motor 100 is specifically a variable frequency motor to facilitate adjustment of the output rotation speed. A reducer 101 and a torque sensor 102 are mounted on an output end of the driving motor 100. The input end of the speed reducer 101 is connected with the output end of the driving motor 100, the output end of the speed reducer 101 is coaxially connected with the bearing mounting shaft 301 through the coupler 103 in a transmission manner, and the driving motor 100 drives the bearing mounting shaft to rotate in a fixed axis manner through the speed reducer 101.
When the test device for the main shaft system of the wind power generation equipment provided by the embodiment is used for testing, as shown in fig. 1, the tested shaft system is connected with the connecting frame 203, then the connecting frame 203 is fixed on the base 201, two ends of the bearing installation shaft 301 are respectively connected with the speed reducer 101 and the loading shaft 206, the driving motor 100 is started to drive the bearing installation shaft 301 to rotate, then the axial push-pull piece 209, the radial push-pull piece 213 and the overturning moment push-pull piece 217 are started, the force application size of each loading piece is adjusted according to the test requirements, and in the test process, the running state of the bearing is monitored and monitored through the temperature detection system until the test is finished.
In this embodiment, two bearings to be tested, namely a first bearing to be tested 302 and a second bearing to be tested 305, are mounted on a bearing mounting shaft 301 of a shafting to be tested, and both the first bearing to be tested 302 and the second bearing to be tested 305 are angular contact ball bearings. In this embodiment, as shown in fig. 2 and 3, the temperature sensor on the outer ring of the first bearing under test 302 is a first outer ring temperature sensor 303, the temperature sensor on the inner ring of the first bearing under test 302 is a first outer ring temperature sensor 304, the temperature sensor on the outer ring of the second bearing under test 305 is a second outer ring temperature sensor 306, and the temperature sensor on the inner ring of the second bearing under test 305 is a second outer ring temperature sensor 307.
It should be emphasized that all the overturning moment pushing and pulling parts 217 need not be started in the process of applying force, and the corresponding overturning moment pushing and pulling parts 217 can be started according to the test requirements. For example, when it is necessary to apply an upturning moment to the bearing mounting shaft 301, the overturning moment push-pull member 217 located on the lower side of the bearing mounting shaft 301 may be activated.
It should be noted that the axial loading bearing 212 needs to be a bearing capable of bearing an axial force, the axial loading bearing 212 may be a conical roller bearing or a thrust ball bearing, when the axial loading bearing 212 is a thrust ball bearing, a race of the thrust ball bearing is interference-fitted on the bearing mounting shaft 301, and a race of the thrust ball bearing is connected to the axial push-pull member 209. The radial load bearing 216 is preferably a bearing that can withstand radial forces, such as a cylindrical roller bearing. In this embodiment, the overturning moment loading bearing 220 may be a thrust bearing.
Embodiment 2 of the test apparatus for a main shaft system of a wind power generation device of the present invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the first connecting structure is a mounting seat connecting hole. In this embodiment, the first connecting structure may also be a connecting flange, the connecting flange is provided with a connecting hole, and the supporting frame is connected and fixed with the connecting flange through a bolt.
Embodiment 3 of the test apparatus for a main shaft system of a wind power generation apparatus of the present invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the second connecting structure is a mounting shaft connecting hole. In this embodiment, the second connecting structure may also be a coupler, the coupler is disposed at a corresponding end of the loading shaft, and the loading shaft is connected to the bearing mounting shaft through the coupler.
Embodiment 4 of the test apparatus for a main shaft system of a wind power generation apparatus of the present invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the support frame includes a connecting frame and a base. In the present embodiment, the supporting frame is an integral structure.
Embodiment 5 of the test apparatus for a main shaft system of a wind power generation apparatus of the present invention:
the embodiment is different from the embodiment 1 in that, in the embodiment 1, the axial loading assembly includes an axial push-pull member and an axial loading bearing, the radial loading assembly includes a radial push-pull member and a radial loading bearing, the overturning moment loading assembly includes an overturning moment push-pull member and an overturning moment loading bearing, and the axial push-pull member, the radial loading assembly and the overturning moment push-pull member respectively apply corresponding stress to the bearing mounting shaft through the corresponding loading bearings. In this embodiment, the axial loading assembly includes an axial push-pull member and an axial loading bearing bush, the radial loading assembly includes a radial push-pull member and a radial loading bearing bush, the overturning moment loading assembly includes an overturning moment push-pull member and an overturning moment loading bearing bush, and the axial push-pull member, the radial loading assembly and the overturning moment push-pull member respectively apply corresponding forces to the bearing installation shaft through the corresponding loading bearing bushes.
Embodiment 6 of the test apparatus for a main shaft system of a wind power generation apparatus of the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the output ends of the axial push-pull member, the radial push-pull member, and the overturning moment push-pull member are respectively and fixedly connected with the outer ring of the corresponding loading bearing through a bearing seat. In this embodiment, the output ends of the axial push-pull member, the radial push-pull member and the overturning moment push-pull member are respectively and fixedly connected with the outer ring of the corresponding loading bearing through a connecting block.
Embodiment 7 of the test apparatus for a main shaft system of a wind turbine generator in the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, force sensors are provided at output ends corresponding to the axial push-pull member, the radial push-pull member, and the overturning moment push-pull member. In this embodiment, the output ends corresponding to the axial push-pull member, the radial push-pull member and the overturning moment push-pull member are not provided with a force sensor, and the output force of each push-pull member can be adjusted before the axial push-pull member, the radial push-pull member and the overturning moment push-pull member are installed.
Embodiment 8 of the test apparatus for a main shaft system of a wind power generation apparatus of the present invention:
the present embodiment is different from embodiment 1 in that 12 overturning moment loading assemblies are arranged in embodiment 1. In this embodiment, the number of the overturning moment loading assemblies may be increased or decreased appropriately, for example, the number of the overturning moment loading assemblies may be 10. In other embodiments, the number of overturning moment loading assemblies may also be 1.
Embodiment 9 of the test apparatus for a main shaft system of a wind turbine generator of the present invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the temperature monitoring unit includes a temperature sensor and a temperature detection system. In this embodiment, the temperature monitoring assembly includes an infrared sensor and a temperature detection system. The infrared sensor is used for measuring the temperature of the inner ring and the outer ring of the bearing in the tested shafting, and the infrared sensor is in wireless connection with the temperature detection system so as to transmit the measured temperature data to the temperature detection system.
Embodiment 10 of the test apparatus for a main shaft system of a wind turbine generator in the present invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, each temperature sensor and the temperature detection system are connected by wire. In the present embodiment, each temperature sensor is wirelessly connected to the temperature detection system.
Embodiment 11 of the test apparatus for a main shaft system of a wind turbine generator in the present invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the axial push-pull member 209, the radial push-pull member 213, and the overturning moment push-pull member 217 are all hydraulic cylinders. In the present embodiment, the axial push-pull member 209, the radial push-pull member 213, and the overturning moment push-pull member 217 are all electric cylinders.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. The test device for the main shaft shafting of the wind power generation equipment is characterized by comprising a driving mechanism, a support frame (200) and a temperature detection assembly, wherein the output end of the driving mechanism is in transmission connection with a bearing mounting shaft (301) of the shafting; the supporting frame (200) is provided with a first connecting structure fixedly connected with a bearing mounting seat (300) of a shafting, an axial loading assembly for applying axial force to a bearing mounting shaft (301), a radial loading assembly for applying radial force to the bearing mounting shaft (301) and an overturning moment loading assembly for applying overturning moment to the bearing mounting shaft (301), the output ends of the axial loading assembly and the radial loading assembly are connected with a loading shaft (206), and the loading shaft (206) is provided with a second connecting structure for connecting with the bearing mounting shaft (301) so that the axial loading assembly and the radial loading assembly respectively apply corresponding stress to the bearing mounting shaft (301) through the loading shaft (206); the output end of the overturning moment loading assembly is used for forming pushing fit with the bearing mounting shaft (301) in the axial direction of the bearing mounting shaft (301) so as to directly apply overturning moment to the bearing mounting shaft (301); the temperature detection assembly is used for monitoring the temperature of an inner ring and an outer ring of a bearing in the shafting.
2. The test device of the main shaft shafting of the wind power generation equipment according to claim 1, wherein the support frame (200) comprises a base (201) and a connecting frame (203), the connecting frame (203) is detachably assembled on the base (201), and the first connecting structure is arranged on the connecting frame (203) so as to connect the bearing mounting seat (300) with the base (201) through the connecting frame (203).
3. The test device for the main shaft shafting of the wind power generation equipment according to claim 2, wherein the base (201) is connected with the connecting frame (203) through a flange.
4. The test device of a main shaft shafting of a wind power plant according to claim 2, wherein the overturning moment loading assembly is fixedly mounted on the connecting frame (203).
5. Testing device of a main shaft shafting of a wind power plant according to any of the claims 1 to 4, characterized in that a plurality of said overturning moment loading assemblies are arranged on said supporting frame (200), each of which is arranged evenly spaced around the axis of the loading shaft (206).
6. Testing device of a main shaft shafting of a wind power plant according to any of the claims 1 to 4, characterized in that the axial loading assembly comprises an axial push-pull member (209) and an axial loading bearing (212) mounted on the loading shaft (206), the radial loading assembly comprises a radial push-pull member (213) and a radial loading bearing (216) mounted on the loading shaft (206), the output end of each push-pull member corresponds to the output end of the corresponding loading assembly, and the output end of each push-pull member is connected with the loading shaft (206) through the corresponding loading shaft (206) bearing respectively to apply a corresponding stress to the loading shaft (206).
7. The test device of the main shaft shafting of the wind power generation equipment is characterized in that bearing seats are respectively installed on the axial loading bearing (212) and the radial loading bearing (216), and the output ends of the axial push-pull piece (209) and the radial push-pull piece (213) are respectively connected to the corresponding bearing seats.
8. Testing device of a main shaft shafting of a wind power plant according to any of the claims 1 to 4, characterized in that a speed reducer (101) and a torque sensor (102) are provided at the output end of the driving mechanism.
9. A test device of a main shaft shafting of a wind power generation device according to any one of claims 1 to 4, wherein the temperature monitoring assembly comprises temperature sensors for being arranged on an inner ring and an outer ring of a bearing in the shafting, respectively, and a temperature detection system, each temperature sensor being connected to the temperature detection system for transmitting detected temperature data to the temperature detection system.
10. The test device for the main shaft shafting of the wind power generation equipment according to claim 9, wherein each temperature sensor is connected with the temperature detection system through a wire, the bearing mounting shaft (301) or the loading shaft (206) is rotatably provided with a conductive slip ring (221), and the temperature sensor on the bearing inner ring is connected with the temperature detection system through the conductive slip ring (221).
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Cited By (1)
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|---|---|---|---|---|
| CN116890264A (en) * | 2023-09-11 | 2023-10-17 | 季华实验室 | Temperature measuring device and method for inner ring and outer ring of bearing and related equipment |
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