CN103439044B - A kind of driftage holding force pilot system and method thereof - Google Patents
A kind of driftage holding force pilot system and method thereof Download PDFInfo
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- CN103439044B CN103439044B CN201310384772.5A CN201310384772A CN103439044B CN 103439044 B CN103439044 B CN 103439044B CN 201310384772 A CN201310384772 A CN 201310384772A CN 103439044 B CN103439044 B CN 103439044B
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Abstract
The invention discloses a kind of driftage holding force pilot system and method thereof, system comprises: back up pad, compression plate, horizontal hanger rod assembly, stand, pressure transducer, stud bolt and brace summer.Horizontal hanger rod assembly comprises disc spring group, guide rod pin, friction disc, platen, horizontal hanger rod further.The bottom of horizontal hanger rod is provided with groove, and guide rod pin, disc spring group, platen and friction disc set gradually in a groove from bottom to up, between compression plate and friction disc, be provided with pressure transducer.When carrying out the test of driftage holding force, screwing stud bolt, driving guide rod pin, disc spring group, platen and friction disc to move on the whole successively, thus compaction pressure sensor, compression plate simulation gear ring bears acting force process.The present invention can simulate the true stressing conditions of fan yaw system disc spring group, obtains the normal pressure relation of stud bolt pre-fastening moment and friction disc, thus stud bolt pre-fastening moment value when obtaining the driftage power requirement needed more accurately.
Description
Technical field
The present invention relates to a kind of pilot system and method thereof, especially relate to a kind of the driftage holding force pilot system and the method thereof that are applied to wind power plant yaw system.
Background technology
Sliding friction formula yaw system is active yawing system more common at present, slidingtype yaw system adopts pretension stud bolt, compression disc spring provides normal pressure for yaw system friction disc, and system, by the control to stud bolt pre-fastening moment, carrys out control system output power.Driftage power is the principal element of fan yaw security and stability, but because stud bolt is in actual pretensioning operation, be subject to the impacts such as bolt railway grease, bolt processing technic featuring, ambient conditions, pretightening technology, be difficult to the pre-fastening moment determining yaw system accurately, thus adjustment column hook bolt pre-fastening moment value can accurately do not reach the driftage performance number of needs.Meanwhile, because stud bolt is in pressured state, and the distortion such as disc spring is by the impact of assembling, temperature, and system does not calculate the normal pressure of friction disc by pre-fastening moment, thus the driftage power not by ensureing to reach needed for driftage to the control of pre-fastening moment.
At present, domestic each media publication is not yet studied slidingtype yaw system pre-fastening moment, only has requirement to the size of pretension.But, in current slidingtype yawing system construction, be the relation of the size not obtaining yaw system pre-fastening moment value and driftage holding force by theoretical calculation formula.The bolt test macro applied in prior art, is all test the pretightning force of tension bolt, and yet there are no relevant research for the test of pretightning force to output torque of pressurized bolt.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of driftage holding force test pilot system and method thereof, the true stressing conditions of simulation fan yaw system disc spring group, obtain the normal pressure relation of stud bolt pre-fastening moment and friction disc, thus driftage power requirement as required obtains the pre-fastening moment value of stud bolt more accurately.
In order to realize foregoing invention object, the present invention specifically provides a kind of technic relization scheme of holding force pilot system of going off course, a kind of driftage holding force pilot system, comprising: back up pad, compression plate, horizontal hanger rod assembly, stand, pressure transducer, stud bolt and brace summer.Described back up pad is arranged on described brace summer by bolt, and described brace summer is arranged on described stand, and described compression plate is bolted on the bottom of described back up pad.Described horizontal hanger rod assembly comprises disc spring group, guide rod pin, friction disc, platen, horizontal hanger rod further, and the bottom of described horizontal hanger rod is provided with groove, and described guide rod pin, disc spring group, platen and friction disc are successively set in described groove from bottom to up.Between described compression plate and described friction disc, be provided with described pressure transducer, described horizontal hanger rod is bolted in described back up pad, and described stud bolt is arranged in the threaded hole be connected with described bottom portion of groove.When carrying out the test of driftage holding force, screwing described stud bolt, driving described guide rod pin, disc spring group, platen and friction disc to move on the whole successively, thus compress described pressure transducer, described back up pad and compression plate simulation yawing gear ring bear acting force process.
Preferably, described driftage holding force pilot system also comprises pressing plate one, pressing plate two and stove bolt.Described pressing plate one and pressing plate two are arranged between pressure transducer and friction disc, and described pressing plate one and pressing plate two adopt rectangular platen, and clamp described pressing plate one and pressing plate two by the inside edge of described stove bolt and horizontal hanger rod.
The present invention also specifically provides a kind of technic relization scheme of holding force test method of going off course in addition, a kind of driftage holding force test method, driftage holding force pilot system comprises back up pad, compression plate, pressing plate one, pressing plate two, horizontal hanger rod assembly, stand, pressure transducer, stud bolt and brace summer.Described horizontal hanger rod assembly comprises disc spring group, guide rod pin, friction disc, platen and horizontal hanger rod further, described driftage holding force test method comprises bolt pretightening test process, described bolt pretightening test process is for testing the relation of described stud bolt pre-fastening moment and described output action power, and this process comprises the following steps:
Pretensioning operation is carried out to described stud bolt, screw described stud bolt, drive described guide rod pin, thus compress described disc spring group, again by described platen and described friction disc by force transmission to described pressure transducer, described pressure transducer is connected with data collecting instrument, the force value collection collected by described pressure transducer by described data collecting instrument is on computing machine, thus obtain described stud bolt pre-fastening moment value and output action force value two groups of data, then obtained the relation of described pre-fastening moment and described output action power by data analysis.
Preferably, described driftage holding force test method also comprises disc spring group performance test process, and described disc spring group performance test process is for testing the performance of described disc spring group, and this process comprises the following steps:
Screw described stud bolt, compress described disc spring group, by described platen and described friction disc by the force transmission of described disc spring group to described pressure transducer, record the screw-in amount of described stud bolt, obtain acting force two groups of data that the deformational displacement of disc spring group and described disc spring group are born, the stiffness curve of described disc spring group is obtained again, the more described rigidity value of disc spring group and the rigidity value of sample, the performance of disc spring group described in comparative analysis by data analysis.
Preferably, described driftage holding force test method also comprises disc spring group creep test process, and described disc spring group creep test process is for testing the rigidity creep properties of described disc spring group, and this process comprises the following steps:
Screw described stud bolt, compress described disc spring group, and lock described stud bolt, described disc spring group is made to be in confined state, and according to test need keep described disc spring group to be in confined state certain hour, detected the force value situation of change of described disc spring group by described pressure transducer, thus obtain the rigidity creep situation of described disc spring group.
Preferably, described driftage holding force test method also comprises thread lubricating grease measure of merit process, and described thread lubricating grease measure of merit process is for testing the impact of thread lubricating grease on described stud bolt output action power, and this process comprises the following steps:
Under there is thread lubricating grease and there is no thread lubricating grease two kinds of situations in described stud bolt, pretensioning operation is carried out to described stud bolt, screw described stud bolt, drive described guide rod pin, thus compress described disc spring group, again by described platen and described friction disc by force transmission to described pressure transducer, the contrast situation of described stud bolt pre-fastening moment value and output action force value two groups of data under obtaining two kinds of situations, thus the relation of described pre-fastening moment and described output action power under obtaining two kinds of situations, and obtain the impact of thread lubricating grease on described stud bolt pretension.
Preferably, described driftage holding force test method also comprises pre-tension method contrast test process, whether described pre-tension method contrast test process causes the acting force difference acted on described friction disc for the firmly beforehand means that more described stud bolt is different, thus more different firmly beforehand means is to the validity and reliability of described stud bolt pretension, this process comprises the following steps:
When changing described stud bolt firmly beforehand means, pretensioning operation is carried out to described stud bolt, screw described stud bolt, drive described guide rod pin, thus compress described disc spring group, again by described platen and described friction disc by force transmission to described pressure transducer, the contrast situation of described stud bolt pre-fastening moment value and output action force value two groups of data under obtaining different firmly beforehand means situation, thus obtain the relation of described stud bolt described pre-fastening moment and described output action power in different firmly beforehand means situations, described stud bolt firmly beforehand means includes but not limited to moment method firmly beforehand means and angle method firmly beforehand means.
Preferably, described driftage holding force pilot system also comprises pressing plate one, pressing plate two and stove bolt, described pressing plate one and pressing plate two are set between described pressure transducer and friction disc, described pressing plate one and pressing plate two adopt rectangular platen, and clamp described pressing plate one and pressing plate two by the inside edge of described stove bolt and horizontal hanger rod.
The one driftage holding force pilot system provided by enforcement the invention described above and method thereof, have following technique effect:
(1) the present invention can simulate the stressing conditions of the parts such as blower fan gear ring, horizontal hanger rod, disc spring group, instead of gear ring, simplifies system architecture, also make to become possibility to the test of friction disc normal pressure with back up pad and compression plate;
(2) the present invention can to the performance of disc spring group, thread lubricating grease, and the rationality etc. of mucosal structure design carries out verification experimental verification, by experiment, obtain the relation of tools for bolts ' pretension moment and Axial stress in bolt, and the accuracy of the at present conventional tools for bolts ' pretension method comprising angle method and moment method in the application of driftage pretension can be verified, and the impact of thread lubricating grease on angle method and moment method can be compared;
(3) the present invention also has structure simply, is easy to the feature of assembling.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that the present invention goes off course the structural front view of a kind of embodiment of holding force pilot system;
Fig. 2 is that the present invention goes off course the structure vertical view of a kind of embodiment of holding force pilot system;
Fig. 3 is that the A-A of Fig. 2 of the present invention is to cut-open view;
Fig. 4 is that the present invention goes off course the three-dimensional structure diagram of a kind of embodiment of holding force pilot system;
In figure: 1-back up pad, 2-compression plate, 3-pressing plate one, 4-pressing plate two, 5-horizontal hanger rod assembly, 6-stand, 7-pressure transducer, 8-disc spring group, 9-guide rod pin, 10-stud bolt, 11-stove bolt, 12-friction disc, 13-platen, 14-horizontal hanger rod, 15-brace summer.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in accompanying drawing 1 to accompanying drawing 4, give the present invention a kind of specific embodiment of go off course holding force pilot system and method thereof, below in conjunction with the drawings and specific embodiments, the invention will be further described.
The specific embodiment of a kind of holding force pilot system of going off course as shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, comprising: back up pad 1, compression plate 2, horizontal hanger rod assembly 5, stand 6, pressure transducer 7, stud bolt 10 and brace summer 15.Back up pad 1 is arranged on brace summer 15 by bolt, and brace summer 15 is arranged on stand 6, and stand 6 is for supporting the table top of whole driftage holding force pilot system.Compression plate 2 is bolted on the bottom of back up pad 1, and compression plate 2, through modifier treatment, occurs depression when avoiding being subject to large pressure.Horizontal hanger rod assembly 5 comprises disc spring group 8, guide rod pin 9, friction disc 12, platen 13, horizontal hanger rod 14 further, and the bottom of horizontal hanger rod 14 is provided with groove, and guide rod pin 9, disc spring group 8, platen 13 and friction disc 12 set gradually in a groove from bottom to up.Between compression plate 2 and friction disc 12, be provided with pressure transducer 7, horizontal hanger rod 14 is bolted in back up pad 1, and stud bolt 10 is arranged in the threaded hole be connected with bottom portion of groove.When carrying out the test of driftage holding force, screwing stud bolt 10, driving guide rod pin 9, disc spring group 8, platen 13 and friction disc 12 to move on the whole successively, thus compaction pressure sensor 7, back up pad 1 and compression plate 2 are simulated yawing gear ring and are born acting force process.
As another kind of specific embodiment of the present invention, driftage holding force pilot system also comprises pressing plate 1, pressing plate 24 and stove bolt 11 further, pressing plate 1 and pressing plate 24 are arranged between pressure transducer 7 and friction disc 12, pressing plate 1 and pressing plate 24 adopt rectangular platen, and clamp pressing plate 1 and pressing plate 24 by the inside edge of stove bolt 11 and horizontal hanger rod 14.Increase the object of pressing plate 1 and pressing plate 24, first be convenient to stud bolt 10 to promote guide rod pin 9 further, drive disc spring group 8, platen 13, friction disc 12 moves on the whole, but the displacement due to stud bolt 10 is conditional, so need the gap that pressing plate comes stuffing pressure sensor 7 and friction disc 12, thickness in addition due to the pressure transducer 7 of different model is generally different, in order to the pressure transducer 7 of different manufacturers different model all can be suitable for, so select the pressing plate 1 of two pieces of different-thickness and pressing plate 24 with the use of, do like this can reduce stud bolt 10 tighten stroke, stud bolt 10 is avoided to be screwed into the deficiency of stroke.Meanwhile, clamped pressing plate 1 and the pressing plate 24 of rectangle by the inside edge of stove bolt 11 and horizontal hanger rod 14, make in the pretensioning operation to stud bolt 10, pressing plate along with rotation, thus can not avoid the transfer of pressure transducer 7.
The true stressing conditions of the driftage holding force pilot system simulation fan yaw system disc spring group 8 that the specific embodiment of the invention describes, obtain the pre-fastening moment of stud bolt 10 and the relation of friction disc 12 normal pressure, thus the pre-fastening moment value of stud bolt 10 when obtaining the driftage power requirement needed more accurately.Driftage holding force pilot system simulation fan yaw system, by the control to stud bolt 10 pre-fastening moment, the final output normal pressure of test disc spring group 8, the relation of pre-fastening moment and friction disc 12 normal pressure can be obtained by experiment more accurately, thus in reality driftage debugging, pre-fastening moment can be adjusted more accurately, ensure to reach fan yaw power.And the specific embodiment of the invention can also carry out the test of pre-fastening moment and disc spring group 8 output torque relation, the influence factor of the pretensioning operation of whole yaw system is analyzed, the performance of disc spring group 8 can also be verified simultaneously, checking thread lubricating grease on the impact of stud bolt 10 pretension, and verifies the angle method of stud bolt 10 pretension and the accuracy of moment method.
The driftage holding force pilot system that the specific embodiment of the invention describes can carry out the testing experiments such as tools for bolts ' pretension Force meansurement, disc spring group Performance Detection, disc spring group creep detection, thread lubricating grease measure of merit, pre-tension method contrast test.
A specific embodiment for holding force of going off course test method, driftage holding force pilot system comprises back up pad 1, compression plate 2, horizontal hanger rod assembly 5, stand 6, pressure transducer 7, stud bolt 10 and brace summer 15.Horizontal hanger rod assembly 5 comprises disc spring group 8, guide rod pin 9, friction disc 12, platen 13 and horizontal hanger rod 14 further.Driftage holding force test method comprises bolt pretightening test process, and bolt pretightening test process is used for the relation of test pole hook bolt 10 pre-fastening moment and output action power, and this process comprises the following steps:
Pretensioning operation is carried out to stud bolt 10, screw stud bolt 10, drive guide rod pin 9, thus compression disc spring group 8, again by platen 13 and friction disc 12 by force transmission to pressure transducer 7, pressure transducer 7 is connected with data collecting instrument, and the force value collection collected by pressure transducer 7 by data collecting instrument is on computing machine, thus obtain stud bolt 10 pre-fastening moment value and output action force value two groups of data, then obtained the relation of pre-fastening moment and output action power by data analysis.
As another kind of specific embodiment of the present invention, driftage holding force test method also comprises disc spring group performance test process further, and disc spring group performance test process is for testing the performance of disc spring group 8, and this process comprises the following steps:
Screw stud bolt 10, compression disc spring group 8, by platen 13 and friction disc 12 by the force transmission of disc spring group 8 to pressure transducer 7, the screw-in amount of record stud bolt 10, obtain acting force two groups of data that the deformational displacement of disc spring group 8 and disc spring group 8 are born, obtained the stiffness curve of disc spring group 8 again by data analysis, compare the rigidity value of disc spring group 8 and the rigidity value of sample, the performance of comparative analysis disc spring group 8.
As another kind of specific embodiment of the present invention, driftage holding force test method also comprises disc spring group creep test process further, and disc spring group creep test process is for testing the rigidity creep properties of disc spring group 8, and this process comprises the following steps:
Screw stud bolt 10, compression disc spring group 8, and locking column hook bolt 10, disc spring group 8 is made to be in confined state, and be in confined state certain hour according to the maintenance disc spring group 8 that needs of test, detected the force value situation of change of disc spring group 8 by pressure transducer 7, thus obtain the rigidity creep situation of disc spring group 8.
As another kind of specific embodiment of the present invention, driftage holding force test method also comprises thread lubricating grease measure of merit process further, thread lubricating grease measure of merit process is for testing the impact of thread lubricating grease on stud bolt 10 output action power, and this process comprises the following steps:
Under there is thread lubricating grease and there is no thread lubricating grease two kinds of situations in stud bolt 10, pretensioning operation is carried out to stud bolt 10, screw stud bolt 10, drive guide rod pin 9, thus compression disc spring group 8, again by platen 13 and friction disc 12 by force transmission to pressure transducer 7, obtain the contrast situation of stud bolt 10 pre-fastening moment value and output action force value two groups of data in two kinds of situations, thus the relation of pre-fastening moment and output action power under obtaining two kinds of situations, and obtain the impact of thread lubricating grease on stud bolt 10 pretension.
As another kind of specific embodiment of the present invention, driftage holding force test method also comprises pre-tension method contrast test process further, pre-tension method contrast test process is used for the acting force the difference whether different firmly beforehand means of reference column hook bolt 10 causes acting on friction disc 12, thus more different firmly beforehand means is to the validity and reliability of stud bolt 10 pretension, this process comprises the following steps:
When changing stud bolt 10 firmly beforehand means, pretensioning operation is carried out to stud bolt 10, screw stud bolt 10, drive guide rod pin 9, thus compression disc spring group 8, again by platen 13 and friction disc 12 by force transmission to pressure transducer 7, obtain the contrast situation of stud bolt 10 pre-fastening moment value and output action force value two groups of data in different firmly beforehand means situation, thus obtain the relation of stud bolt 10 pre-fastening moment and output action power in different firmly beforehand means situations, obtain the accuracy of different pre-tension method to stud bolt 10 pretension and output action power relation, stud bolt 10 firmly beforehand means includes but not limited to moment method firmly beforehand means and angle method firmly beforehand means.
As one of the present invention preferably specific embodiment, driftage holding force pilot system also comprises pressing plate 1, pressing plate 24 and stove bolt 11.Between pressure transducer 7 and friction disc 12, arrange pressing plate 1 and pressing plate 24 further, pressing plate 1 and pressing plate 24 adopt rectangular platen, and clamp pressing plate 1 and pressing plate 24 by the inside edge of stove bolt 11 and horizontal hanger rod 14.
The driftage holding force pilot system that the specific embodiment of the invention describes can simulate the stressing conditions of blower fan gear ring, horizontal hanger rod, disc spring group etc., back up pad 1 and compression plate 2 is adopted to instead of gear ring, simplify system architecture, also make to become possibility to the test of friction disc 12 normal pressure.In addition, the technical scheme described by specific embodiment can to the performance of disc spring group 8, and the performance of thread lubricating grease, firmly beforehand means etc. carry out verification experimental verification.In addition, due to current to the stressing conditions of compression column hook bolt 10, do not have desirable computing formula can draw the pre-fastening moment of stud bolt 10 and the relation of axial force, the specific embodiment of the invention can by test, obtain the pre-fastening moment of stud bolt 10 and the relation of axial force, and at present conventional tools for bolts ' pretension method can be verified, angle method and the accuracy of moment method in the application of driftage pretension, and the impact of thread lubricating grease on angle method and moment method can be compared.Meanwhile, it is simple that the technical scheme that the specific embodiment of the invention describes also has structure, is easy to the feature of assembling.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, when not departing from Spirit Essence of the present invention and technical scheme, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent replacement, equivalence change and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (8)
1. a driftage holding force pilot system, it is characterized in that, comprise: back up pad (1), compression plate (2), horizontal hanger rod assembly (5), stand (6), pressure transducer (7), stud bolt (10) and brace summer (15), described back up pad (1) is arranged on described brace summer (15) by bolt, described brace summer (15) is arranged on described stand (6), and described compression plate (2) is bolted on the bottom of described back up pad (1); Described horizontal hanger rod assembly (5) comprises disc spring group (8), guide rod pin (9), friction disc (12), platen (13), horizontal hanger rod (14) further, the bottom of described horizontal hanger rod (14) is provided with groove, and described guide rod pin (9), disc spring group (8), platen (13) and friction disc (12) are successively set in described groove from bottom to up; Described pressure transducer (7) is provided with between described compression plate (2) and described friction disc (12), described horizontal hanger rod (14) is bolted in described back up pad (1), and described stud bolt (10) is arranged in the threaded hole be connected with described bottom portion of groove; When carrying out the test of driftage holding force, screw described stud bolt (10), described guide rod pin (9), disc spring group (8), platen (13) and friction disc (12) is driven to move on the whole successively, thus compressing described pressure transducer (7), described back up pad (1) and compression plate (2) simulation yawing gear ring bear acting force process.
2. one driftage holding force pilot system according to claim 1, it is characterized in that: described driftage holding force pilot system also comprises pressing plate one (3), pressing plate two (4) and stove bolt (11), described pressing plate one (3) and pressing plate two (4) are arranged between pressure transducer (7) and friction disc (12), described pressing plate one (3) and pressing plate two (4) adopt rectangular platen, and clamp described pressing plate one (3) and pressing plate two (4) by the inside edge of described stove bolt (11) and horizontal hanger rod (14).
3. a driftage holding force test method, it is characterized in that, driftage holding force pilot system comprises back up pad (1), compression plate (2), horizontal hanger rod assembly (5), stand (6), pressure transducer (7), stud bolt (10) and brace summer (15), described horizontal hanger rod assembly (5) comprises disc spring group (8) further, guide rod pin (9), friction disc (12), platen (13) and horizontal hanger rod (14), described driftage holding force test method comprises bolt pretightening test process, described bolt pretightening test process is for testing the relation of described stud bolt (10) pre-fastening moment and output action power, this process comprises the following steps:
Pretensioning operation is carried out to described stud bolt (10), screw described stud bolt (10), drive described guide rod pin (9), thus compress described disc spring group (8), again by described platen (13) and described friction disc (12) by force transmission to described pressure transducer (7), described pressure transducer (7) is connected with data collecting instrument, the force value collection collected by described pressure transducer (7) by described data collecting instrument is on computing machine, thus obtain described stud bolt (10) pre-fastening moment value and output action force value two groups of data, the relation of described pre-fastening moment and described output action power is obtained again by data analysis.
4. one driftage holding force test method according to claim 3, it is characterized in that: described driftage holding force test method also comprises disc spring group performance test process, described disc spring group performance test process is for testing the performance of described disc spring group (8), and this process comprises the following steps:
Screw described stud bolt (10), compress described disc spring group (8), by described platen (13) and described friction disc (12) by the force transmission of described disc spring group (8) to described pressure transducer (7), record the screw-in amount of described stud bolt (10), obtain acting force two groups of data that the deformational displacement of disc spring group (8) and described disc spring group (8) are born, the stiffness curve of described disc spring group (8) is obtained again by data analysis, the more described rigidity value of disc spring group (8) and the rigidity value of sample, the performance of disc spring group (8) described in comparative analysis.
5. one driftage holding force test method according to claim 4, it is characterized in that: described driftage holding force test method also comprises disc spring group creep test process, described disc spring group creep test process is for testing the rigidity creep properties of described disc spring group (8), and this process comprises the following steps:
Screw described stud bolt (10), compress described disc spring group (8), and lock described stud bolt (10), described disc spring group (8) is made to be in confined state, and according to test need keep described disc spring group (8) to be in confined state certain hour, detected the force value situation of change of described disc spring group (8) by described pressure transducer (7), thus obtain the rigidity creep situation of described disc spring group (8).
6. one driftage holding force test method according to claim 5, it is characterized in that: described driftage holding force test method also comprises thread lubricating grease measure of merit process, described thread lubricating grease measure of merit process is for testing the impact of thread lubricating grease on described stud bolt (10) output action power, and this process comprises the following steps:
Under there is thread lubricating grease and there is no thread lubricating grease two kinds of situations in described stud bolt (10), pretensioning operation is carried out to described stud bolt (10), screw described stud bolt (10), drive described guide rod pin (9), thus compress described disc spring group (8), again by described platen (13) and described friction disc (12) by force transmission to described pressure transducer (7), obtain the contrast situation of described stud bolt (10) pre-fastening moment value and output action force value two groups of data in two kinds of situations, thus the relation of described pre-fastening moment and described output action power under obtaining two kinds of situations, and obtain the impact of thread lubricating grease on described stud bolt (10) pretension.
7. one driftage holding force test method according to claim 6, it is characterized in that: described driftage holding force test method also comprises pre-tension method contrast test process, described pre-tension method contrast test process is used for the acting force the difference whether different firmly beforehand means of more described stud bolt (10) causes acting on described friction disc (12), thus more different firmly beforehand means is to the validity and reliability of described stud bolt (10) pretension, this process comprises the following steps:
When changing described stud bolt (10) firmly beforehand means, pretensioning operation is carried out to described stud bolt (10), screw described stud bolt (10), drive described guide rod pin (9), thus compress described disc spring group (8), again by described platen (13) and described friction disc (12) by force transmission to described pressure transducer (7), obtain the contrast situation of described stud bolt (10) pre-fastening moment value and output action force value two groups of data in different firmly beforehand means situation, thus obtain the relation of described stud bolt (10) described pre-fastening moment and described output action power in different firmly beforehand means situations, described stud bolt (10) firmly beforehand means includes but not limited to moment method firmly beforehand means and angle method firmly beforehand means.
8. the one driftage holding force test method according to claim arbitrary in claim 3 to 7, it is characterized in that: described driftage holding force pilot system also comprises pressing plate one (3), pressing plate two (4) and stove bolt (11), described pressing plate one (3) and pressing plate two (4) are set between described pressure transducer (7) and friction disc (12), described pressing plate one (3) and pressing plate two (4) adopt rectangular platen, and clamp described pressing plate one (3) and pressing plate two (4) by the inside edge of described stove bolt (11) and horizontal hanger rod (14).
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| CN106197800A (en) * | 2016-07-11 | 2016-12-07 | 上海航天设备制造总厂 | Thrust measures frock and measuring method thereof |
| CN114000985B (en) * | 2020-07-28 | 2023-09-01 | 北京金风慧能技术有限公司 | Monitoring device of yaw brake device of wind generating set |
| CN113624389B (en) * | 2021-08-06 | 2023-03-14 | 福州外语外贸学院 | Bolt tension value slide rule mechanism and use method thereof |
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| CN201865859U (en) * | 2010-11-29 | 2011-06-15 | 保定天威集团有限公司 | Sliding type yawing bearing of large-size wind power generator set |
| EP2503317A1 (en) * | 2011-03-23 | 2012-09-26 | Rolls-Royce plc | Device for fatigue testing a specimen |
| CN202326009U (en) * | 2011-11-18 | 2012-07-11 | 广东东兴风盈风电设备制造有限公司 | Yaw system of wind power generator set |
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| CN103439044A (en) | 2013-12-11 |
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