CN113464581A - Shaft coupling and wind generating set comprising same - Google Patents
Shaft coupling and wind generating set comprising same Download PDFInfo
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- CN113464581A CN113464581A CN202110777885.6A CN202110777885A CN113464581A CN 113464581 A CN113464581 A CN 113464581A CN 202110777885 A CN202110777885 A CN 202110777885A CN 113464581 A CN113464581 A CN 113464581A
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- 230000008878 coupling Effects 0.000 title claims abstract description 58
- 238000010168 coupling process Methods 0.000 title claims abstract description 58
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 129
- 230000007246 mechanism Effects 0.000 claims description 23
- 238000010248 power generation Methods 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/021—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with radially applied torque-limiting friction surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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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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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention discloses a coupler and a wind generating set comprising the same, wherein the coupler comprises a torque limiter and an end side connecting piece arranged at the end part of the torque limiter, the torque limiter comprises a limiter main body and a transmission intermediate body, the abutting surface of the transmission intermediate body is connected with the limiter main body and can move synchronously, the other end of the transmission intermediate body is connected with the end side connecting piece, and when the torque applied to the transmission intermediate body is not more than a set torque value, the structure synchronously rotates; when the torque received by the transmission intermediate body is larger than the set torque value, the limiter main body slips in the rotational circumferential direction with respect to the transmission intermediate body. The coupling and the wind generating set comprising the same enable the transmission intermediate body to play a transmission role, and when the torque generated in one direction is larger than the set torque value of the coupling, one end face connected with the limiter main body slides relatively, namely slips, so that the condition that one side fails and the other side cannot bear large load and is damaged due to impact is avoided.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a coupler and a wind generating set comprising the same.
Background
For a hybrid-driven wind generating set, namely a wind generating mode combining permanent magnet power generation and a gear box power generation system, one end, far away from a hub, of a rotating shaft in the permanent magnet generator can be connected to the input end of the gear box through a coupler, and then a box body of the gear box is fixedly connected with a main frame, so that the high-power wind generating set is realized.
When the direct-drive generator set breaks down, all loads in the direction of the wind wheel can be instantaneously transmitted to the gear box, and the instantaneous large loads can exceed the bearing capacity of the gear box, so that the gear box is damaged, and the normal operation of the whole hybrid-drive wind generator set is further influenced. And, similarly, when the gearbox fails, it may hinder the normal rotation of the rotating shaft, causing the entire wind turbine to stop.
Disclosure of Invention
The invention aims to overcome the defect that when one of transmission parts connected with two ends of a coupler in the prior art breaks down, the generated instantaneous large load impacts the transmission part in the other direction to cause damage, and provides the coupler and a wind generating set comprising the coupler.
The invention solves the technical problems through the following technical scheme:
the coupler is characterized by comprising a torque limiter and an end side connecting piece arranged at the end part of the torque limiter, wherein the torque limiter comprises a limiter main body and a transmission intermediate body clamped between the limiter main body and the end side connecting piece, the abutting surface of one end of the transmission intermediate body is connected with the limiter main body and can synchronously move along with the limiter main body, the other end of the transmission intermediate body is connected with the end side connecting piece, and when the torque applied to the transmission intermediate body is not more than a set torque value, the limiter main body, the transmission intermediate body and the end side connecting piece synchronously rotate; when the torque applied to the transmission intermediate body is larger than a set torque value, the limiter body slips relative to the transmission intermediate body in the circumferential direction of rotation.
The coupling is provided with a torque limiter which is a combination of a limiter main body and a transmission intermediate body, the transmission intermediate body is clamped between the limiter main body and an end side connecting piece to play a transmission role, the coupling transmits the torque generated by the transmission piece positioned at any direction of two ends of the coupling in a normal state, and when the torque generated in one direction is larger than the set torque value of the coupling, one end surface of the transmission intermediate body connected with the limiter main body slides relative to the limiter main body along the circumferential direction of rotation, namely, the rotation slip occurs, so that the two structures can not rotate simultaneously, and the side with a larger torque value can not transmit the larger torque to the structure positioned at the other side of the transmission intermediate body, thereby avoiding the situation that in case that one side fails in an operation state, the instantaneous large load is generated and transmitted to the other side, and the structure of the other side can not bear the large load and is damaged due to impact, this kind of setting has not only realized the above-mentioned effect of cutting off transmission process in time, can also resume to synchronous transmission state to when being not more than the settlement torque value at the moment of torsion of transmission, has automatic cutout's effect, can also realize the recovery automatically, does not influence the operation of motor.
Preferably, the abutting surface abuts against an end surface of the limiter body, and the set torque value is equal to a maximum static friction force value between the abutting surface and the end surface of the limiter body. The torque value is directly determined by the relative friction force of the two abutting surface pieces, the friction force can be achieved through the abutting pressure, the torque value is conveniently and flexibly adjusted in the setting mode, structural arrangement is reduced, and economical efficiency is higher.
Preferably, the transmission intermediate body includes a transmission main body and a friction plate, and one end surface of the transmission main body and the limiter main body abut against each other through the friction plate. Through the friction disc butt between transmission midbody and the limiter main part, the accessible is changed the friction disc and is realized the biggest static friction power on the one hand, also is the adjustment of setting for the torque value promptly, and on the other hand can not cause the damage to the structure of transmission main part, conveniently changes after the friction disc produces wearing and tearing, is favorable to the control of cost.
Preferably, the torque limiter further comprises a clamping mechanism, the clamping mechanism is arranged on one end face, far away from the limiter main body, of the transmission main body, the clamping mechanism and the transmission main body are mutually abutted through a friction plate, and the clamping mechanism and the limiter main body are fixedly connected. The clamping mechanism provides pressing force for the transmission intermediate body, so that the formation of friction between the transmission intermediate body and the torque limiter is ensured, the value of the maximum static friction force can be adjusted through the pressing force of the clamping mechanism, and meanwhile, the transmission intermediate body is prevented from shifting in the radial direction.
Preferably, the friction plates on both sides of the transmission main body have the same shape and thickness. The friction plates on the two sides of the transmission main body are set to be in the same specification, so that when the torque is larger than the set torque value, the friction forces on the two sides of the transmission main body are the same, and under the condition, the friction forces on the two sides of the transmission main body are the same, so that the situation that the friction force on one side is large and the friction force on the other side is small, which causes the transmission main body to be damaged by additional torque.
Preferably, the clamping mechanism includes a clamping ring whose radially outer side abuts against the transmission body, and a clamping bolt by which the radially inner side of the clamping ring is fixed to one end of the limiter body. Clamping mechanism passes through both sides respectively with transmission main part and stopper main part butt and be connected, has realized simultaneously to transmission main part and with the fixed of stopper main part, simple and convenient.
Preferably, the number of the end-side connecting members is two, the two end-side connecting members are respectively provided at both ends of the torque limiter, and the transmission intermediate body is interposed between the end-side connecting member located at either end of the coupling and the limiter main body. The transmission intermediate body can be arranged on any side of the coupler according to the portable setting requirement, so that the flexibility of product use and design is improved, and meanwhile, adjustment can be conveniently made according to the position where a fault can occur or the position of a structure with weaker bearing torque according to the actual condition.
Preferably, the end-side connecting member is divided into a driving-side connecting member and a non-driving-side connecting member, the driving-side connecting member is connected to the torque generating member, the non-driving-side connecting member is connected to the torque receiving member, and the other end of the transmission intermediate body is connected to the non-driving-side connecting member. The driving side connecting piece is used for transmitting the torque generated by the torque generation piece to the torque limiter and then to the torque receiving piece, and the transmission intermediate body is arranged on one side of the torque receiving piece, so that the torque transmission is cut off when the torque generation piece generates a transient large load, the continuous operation on one side of the driving side is not influenced, the reliability in use is improved, and the operation of the whole machine is not influenced.
Preferably, a connecting piece is interposed between the end-side connecting piece and the torque limiter, the end-side connecting piece is movable relative to the torque limiter along a surface extension direction of the connecting piece, and a sliding friction force between the connecting piece and the end-side connecting piece is greater than the set torque value. The torque transmission between end side connecting piece and the torque limiter has been realized on the one hand in the setting of connection piece, and on the other hand, this kind of mode of leaning on to connect can also be absorbed by the connection piece because the axial dislocation that the vibration produced when whole shaft coupling is used, has realized "soft" connection promptly, has avoided the condition of axial dislocation to cause the influence to the torque transmission.
The utility model provides a wind generating set, its includes wheel hub, first permanent magnet generator and step-up gear box power generation system, its characterized in that, the one end of first permanent magnet generator's rotation axis connect in wheel hub, the other end of rotation axis through as above the coupling joint in step-up gear box power generation system's input.
Preferably, the number of the end-side connecting members is two, the two end-side connecting members are respectively disposed at two end portions of the torque limiter, the transmission intermediate body is interposed between the end-side connecting member located at any one end portion of the coupling and the limiter main body, the other end of the rotating shaft is connected to the end-side connecting member far away from the transmission intermediate body, and an input end of the step-up gear box power generation system is connected to the end-side connecting member near the transmission intermediate body.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
the coupling and the wind generating set comprising the same have the advantages that the torque limiter is arranged into a combination of the limiter main body and the transmission intermediate body, the transmission intermediate body is clamped between the limiter main body and the end side connecting piece to play a transmission role, the coupling transmits the torque generated by the transmission piece positioned at any direction of two ends of the coupling under a normal state, when the torque generated in one direction is larger than the set torque value of the coupling, one end surface of the transmission intermediate body connected with the limiter main body slides relative to the limiter main body along the circumferential direction of rotation, namely, the rotation and the sliding occur, so that the two structures cannot rotate simultaneously, and the side with a larger torque value cannot transmit the larger torque to the structure positioned at the other side of the transmission intermediate body, thereby avoiding the phenomenon that the larger load is generated instantly and transmitted to the other side in case of one side is failed under an operation state, the structure of another party can't bear the heavy load and receive the circumstances that the impact leads to the damage, and this kind of setting has not only realized the above-mentioned effect that in time cuts off transmission process, can also resume to the automatic transmission state that resumes to synchronous when being not more than the settlement torque value at the moment of torsion of transmission, has automatic cutout's effect, can also realize automatically recovering, does not influence the operation of motor.
Drawings
Fig. 1 is a schematic structural diagram of a coupling according to a preferred embodiment of the present invention.
Fig. 2 is a partial structural view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of a wind turbine generator system according to a preferred embodiment of the present invention.
Description of reference numerals:
Torque limiter 11
Transmission main body 112a
End-side connecting piece 12
Connecting sheet 13
First permanent magnet generator 3
Speed-increasing gear box power generation system 4
Detailed Description
The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the invention to the described embodiment.
As shown in fig. 1 and 2, the present embodiment provides a coupling 1 and a wind turbine generator system including the same, wherein the coupling 1 includes a torque limiter 11 and an end-side connecting member 12 disposed at an end of the torque limiter 11, the torque limiter 11 includes a limiter main body 111 and a transmission intermediate body 112 interposed between the limiter main body 111 and the end-side connecting member 12, an abutting surface of one end of the transmission intermediate body 112 is connected to the limiter main body 111 and can move synchronously with the limiter main body 111, the other end of the transmission intermediate body 112 is connected to the end-side connecting member 12, and when a torque received by the transmission intermediate body 112 is not greater than a set torque value, the limiter main body 111, the transmission intermediate body 112 and the end-side connecting member 12 rotate synchronously; when the torque received by the transmission intermediate body 112 is larger than the set torque value, the limiter body 111 slips in the rotational circumferential direction with respect to the transmission intermediate body 112.
In the hybrid drive type wind turbine generator system, the hub 2 and the input end of the gear box are drivingly connected to each other through the rotating shaft 31 of the permanent magnet generator portion, and the coupling 1 is configured such that the torque limiter 11 is a combination of the limiter main body 111 and the transmission intermediate body 112, and the transmission intermediate body 112 is interposed between the limiter main body 111 and the end-side connecting member 12, thereby performing a driving action. The coupling 1 transmits the torque generated by the transmission parts positioned at two ends of the coupling in a normal state, and when the torque generated in one direction is larger than the set torque value of the coupling 1, one end surface of the transmission intermediate body 112 connected with the limiter main body 111 relatively slides along the rotation circumferential direction relative to the limiter main body 111, namely, the rotation slip occurs, so that the two structures cannot rotate simultaneously, and at the moment, one side generating a larger torque value cannot transmit the larger torque to the structure positioned at the other side of the transmission intermediate body 112, thereby avoiding the situation that in case of failure of one side in an operation state, an instantaneous large load is generated and transmitted to the other side, and the structure of the other side cannot bear the large load and is damaged due to impact, not only realizing the effect of timely cutting off the transmission process, but also automatically recovering to a synchronous transmission state when the transmitted torque is recovered to be not larger than the set torque value, the automatic switching-off device has the effect of automatic switching-off, can also automatically realize recovery, and does not influence the operation of the motor.
Generally, there are connecting transmission members at both ends of the coupling 1, and therefore, it is preferable that the present embodiment is specifically directed to a case where the number of the end-side connecting members 12 is two, and the two end-side connecting members 12 are respectively provided at both ends of the torque limiter 11. In this state, it is further preferable that the transmission intermediate body 112 is interposed between the end-side coupling 12 located at either end of the coupling 1 and the limiter main body 111. The transmission intermediate body 112 can be installed on any side of the coupler 1 according to the portable requirement, so that the flexibility of product use and design is improved, and meanwhile, the adjustment can be conveniently made according to the position where the fault can happen or the structural position with weak bearing torque according to the actual condition. Of course, in other embodiments, the connection structure of the end of the torque limiter 11 may be modified for a special case where one end of the torque limiter 11 is directly connected to the transmission member.
Preferably, the end side connecting member 12 in this embodiment is further divided into a driving side connecting member connected to the torque generating member and a non-driving side connecting member connected to the torque receiving member, and the other end of the transmission intermediate body 112 is connected to the non-driving side connecting member. The driving side connecting piece is used for transmitting the torque generated by the torque generation piece to the torque limiter 11 and then to the torque receiving piece, and the transmission intermediate body 112 is arranged on one side of the torque receiving piece, so that the torque transmission is cut off when the torque generation piece generates a transient large load, the continuous operation of one side of the driving side of the torque generation piece is not influenced, the reliability in use is improved, and the operation of the whole machine is not influenced.
Further, the abutment surface of the coupling 1 abuts against the end surface of the limiter body 111, and the torque value is set equal to the maximum static friction force value between the abutment surface and the end surface of the limiter body 111. The torque value is directly determined by the relative friction force of the two abutting surface pieces, the friction force can be achieved through the abutting pressure, the torque value is conveniently and flexibly adjusted in the setting mode, structural arrangement is reduced, and economical efficiency is higher.
The transmission intermediate body 112 of the coupling 1 includes a transmission main body 112a and a friction plate 112b, and one end surface of the transmission main body 112a and the limiter main body 111 abut against each other via the friction plate 112 b. The transmission intermediate body 112 and the limiter main body 111 are abutted through the friction plate 112b, on one hand, the maximum static friction force can be realized by replacing the friction plate 112b, namely, the adjustment of the set torque value is realized, on the other hand, the structure of the transmission main body 112a cannot be damaged, the friction plate 112b is conveniently replaced after being worn, and the cost control is facilitated.
In this embodiment, the shapes and thicknesses of the friction plates 112b on the two sides of the transmission main body 112a are set to be completely the same, so that when the torque is greater than the set torque value, the friction forces on the two sides of the transmission main body 112a are the same, in this case, the friction forces on the two sides of the transmission main body 112a are the same, and the friction force on one side is not large, and the friction force on the other side is small, so that the transmission main body 112a itself is subjected to additional torque to damage the structure of the transmission main body 112 a.
The torque limiter 11 further includes a clamping mechanism 113, the clamping mechanism 113 is disposed on an end surface of the transmission main body 112a away from the limiter main body 111, the clamping mechanism 113 and the transmission main body 112a are abutted against each other through a friction plate 112b, and the clamping mechanism 113 and the limiter main body 111 are fixedly connected. The arrangement of the clamping mechanism 113 provides a pressing force for the transmission intermediate body 112, ensures the formation of friction between the transmission intermediate body 112 and the torque limiter 11, and can also adjust the value of the maximum static friction through the pressing force of the clamping mechanism 113, and simultaneously avoids the transmission intermediate body 112 from shifting in the radial direction.
Further, the clamp mechanism 113 includes a clamp ring whose radially outer side abuts against the transmission main body 112a and whose radially inner side is fixed to one end of the limiter main body 111 by a clamp bolt (not shown in the drawings). The clamping mechanism 113 is respectively abutted and connected with the transmission main body 112a and the limiter main body 111 through two sides, so that the transmission main body 112a and the limiter main body 111 are fixed simultaneously, and the clamping mechanism is simple and convenient.
In the present embodiment, the clamp ring has an annular structure, and an outer end surface of the clamp ring abuts against the friction plate 112b of the transmission intermediate body 112, and an inner end surface of the clamp ring is used for connecting with the limiter main body 111 by a clamp bolt, so that not only is the clamp ring fixed, but also the relative sliding effect under a large load is not affected.
With regard to the relationship between the preset and set torque values that limit the magnitude of the frictional force on the abutment surfaces of the transmission intermediate body 112 and its body, the following formula can be referred to:
T＝2×NFμr
wherein T refers to the value of the moment to which the surface of the torque limiter is subjected; n refers to the number of clamping bolts used for fixing between the limiter body and the clamping ring; f refers to the clamping force applied by a single clamping bolt to the surface of the clamping ring; mu refers to the friction coefficient between the limiter main body and the friction plate; r refers to the average radius of the friction faces on the friction plate.
The magnitude of the set torque value can be changed by adjusting the above-mentioned relevant factors for different preset conditions of the engine, for example, changing the number of clamp bolts connected between the clamp ring and the limiter body 111, or the material of the friction plate 112b, etc. In this embodiment, specific numerical values of the above factors are not limited, and a skilled person may adjust the factors according to actual use conditions.
Further, a coupling piece 13 is interposed between the end-side coupling 12 and the torque limiter 11 of the coupling 1, the end-side coupling 12 is movable in a surface extending direction of the coupling piece 13 with respect to the torque limiter 11, and a sliding friction force between the coupling piece 13 and the end-side coupling 12 is larger than a set torque value. The connecting piece 13 is arranged to realize torque transmission between the end side connecting piece 12 and the torque limiter 11, and on the other hand, the abutting connection mode can also absorb axial dislocation generated by vibration of the whole coupler 1 in use by the connecting piece 13, so that soft connection is realized, influence on torque transmission caused by the condition of axial dislocation is avoided, and misalignment between the rotating shaft 31 and the input shaft of the gear box is eliminated.
As shown in fig. 3, the present embodiment further provides a wind generating set, which includes a hub 2, a first permanent magnet generator 3 and a step-up gear box power generation system 4, wherein one end of a rotating shaft 31 of the first permanent magnet generator 3 is connected to the hub 2, and the other end of the rotating shaft 31 is connected to an input end of the step-up gear box power generation system 4 through the above coupling 1. Preferably, the step-up gear generation system 4 is disposed inside the main frame 5 of the wind turbine generator set.
Specifically, in the present embodiment, there are connecting transmission members at both ends of the coupling 1, and therefore, the other end of the rotating shaft 31 is directly flange-connected to the end-side connecting member 12 on the side away from the transmission intermediate, and then the input end of the speed-increasing gear generation system 4 is connected to the end-side connecting member 12 on the side close to the transmission intermediate 112. In a normal use state of a normal wind generating set, one side of the hub 2 rotates to drive the rotating shaft 31 to rotate, and further the first permanent magnet generator 3 and the speed-up gearbox power generation system 4 generate power, so that one side of the hub 2 is a torque generating piece, namely a driving side; one side of the speed increasing gear generation system 4 is a torque receiving member, i.e., a non-driving side. Therefore, in the corresponding state, the rotating shaft 31 connected to the hub 2 is connected to the driving side connecting piece, and the non-driving side connecting piece is connected to the input end of the gearbox power generation system 4, so as to adapt to the operation state of the wind generating set in the normal state. Of course, in other embodiments, the coupling can be used in the opposite installation direction as long as the normal operation of the wind turbine generator system can be ensured and the coupling can perform its corresponding function. When the wind generating set is in actual operation and an instant large load suddenly occurs, the torque limiter 11 automatically slips inside, namely, the end-side connecting piece 12 at one end slides relative to the torque limiter 11 along the circumferential direction of rotation and rapidly rotates relative to the torque limiter 11, the torque limiter 11 still receives a set torque value, so that the rotation cannot be accelerated along with the acceleration, and a normal state is kept, so that the gearbox is protected from being impacted by the instant large load; when the instantaneous large load disappears, the torque limiter 11 and the coupling 1 are restored to the normal working state. When the gear box has faults, such as tooth breakage, bearing damage and the like, the gear system cannot work, the rotation of the rotating shaft 31 is prevented in turn, strong counter torque is generated at the moment, and the torque limiter 11 can also slip under the condition that the side of the gear box slides relative to the limiter main body 111 along the circumferential direction of rotation, so that synchronous movement between the gear box and the rotating shaft 31 is interrupted, the impact of the faults of the gear box on the rotating shaft 31 is prevented, and the normal operation of the position of the direct-drive motor is not influenced.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (11)
1. A coupler is characterized by comprising a torque limiter and an end side connecting piece arranged at the end part of the torque limiter, wherein the torque limiter comprises a limiter main body and a transmission intermediate body clamped between the limiter main body and the end side connecting piece, the abutting surface of one end of the transmission intermediate body is connected with the limiter main body and can synchronously move along with the limiter main body, the other end of the transmission intermediate body is connected with the end side connecting piece,
when the torque received by the transmission intermediate body is not greater than a set torque value, the limiter body, the transmission intermediate body, and the end-side connecting member rotate in synchronization; when the torque applied to the transmission intermediate body is larger than a set torque value, the limiter body slips relative to the transmission intermediate body in the circumferential direction of rotation.
2. The coupling according to claim 1, wherein the abutment surface abuts against an end surface of the limiter body, and the set torque value is equal to a maximum static friction force value between the abutment surface and the end surface of the limiter body.
3. The coupling according to claim 1, wherein said transmission intermediate body comprises a transmission main body and a friction plate, and an end face of said transmission main body and said limiter main body abut against each other through said friction plate.
4. The coupling of claim 3, wherein the torque limiter further comprises a clamping mechanism, the clamping mechanism is disposed on an end surface of the transmission main body far away from the limiter main body, the clamping mechanism and the transmission main body are abutted with each other through a friction plate, and the clamping mechanism and the limiter main body are fixedly connected.
5. The coupling of claim 4 wherein said friction plates on both sides of said drive body are of the same shape and thickness.
6. The coupling according to claim 4, wherein said clamping mechanism comprises a clamping ring and a clamping bolt, a radially outer side of said clamping ring abutting said transmission body, a radially inner side of said clamping ring being fixed to one end of said limiter body by said clamping bolt.
7. The coupling according to claim 1, wherein the number of the end-side connecting members is two, the two end-side connecting members are respectively provided at both end portions of the torque limiter, and the transmission intermediate body is interposed between the end-side connecting member and the limiter main body at either end portion of the coupling.
8. The coupling according to claim 7, wherein said end side connecting members are divided into a driving side connecting member and a non-driving side connecting member, said driving side connecting member is connected to the torque generating member, said non-driving side connecting member is connected to the torque receiving member, and the other end of said transmission intermediate body is connected to said non-driving side connecting member.
9. The coupling according to any one of claims 1 to 8, wherein a coupling piece is interposed between the end-side coupling piece and the torque limiter, the end-side coupling piece is movable relative to the torque limiter in a direction in which a surface of the coupling piece extends, and a sliding friction force between the coupling piece and the end-side coupling piece is larger than the set torque value.
10. A wind generating set comprising a hub, a first permanent magnet generator and a step-up gear box generating system, wherein one end of a rotating shaft of the first permanent magnet generator is connected to the hub, and the other end of the rotating shaft is connected to an input end of the step-up gear box generating system through a coupling according to any one of claims 1 to 9.
11. The wind turbine generator system according to claim 10, wherein the number of the end-side connecting members is two, the two end-side connecting members are respectively provided at both ends of the torque limiter, the transmission intermediate body is interposed between the end-side connecting member located at either end of the coupling and the limiter main body, the other end of the rotating shaft is connected to the end-side connecting member that is distant from the transmission intermediate body, and an input end of the step-up gear box power generation system is connected to the end-side connecting member that is close to the transmission intermediate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777885.6A CN113464581A (en) | 2021-07-09 | 2021-07-09 | Shaft coupling and wind generating set comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777885.6A CN113464581A (en) | 2021-07-09 | 2021-07-09 | Shaft coupling and wind generating set comprising same |
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| CN202110777885.6A Pending CN113464581A (en) | 2021-07-09 | 2021-07-09 | Shaft coupling and wind generating set comprising same |
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| CN106907302A (en) * | 2017-03-10 | 2017-06-30 | 利恩传动设备（常州）有限公司 | Two-way asymmetric breakaway torque limiter |
| CN206582065U (en) * | 2017-03-10 | 2017-10-24 | 利恩传动设备（常州）有限公司 | Two-way asymmetric breakaway torque limiter |
| CN107339337A (en) * | 2017-03-10 | 2017-11-10 | 利恩传动设备（常州）有限公司 | Unidirectional breakaway torque limiter |
| CN112576452A (en) * | 2019-09-30 | 2021-03-30 | 艾德温股份有限公司 | Drive train of a wind turbine comprising a torque limiter, wind turbine |
| CN113007028A (en) * | 2021-03-23 | 2021-06-22 | 上海电气风电集团股份有限公司 | Wind generating set |
| CN213511794U (en) * | 2020-08-03 | 2021-06-22 | 三一重能股份有限公司 | Torque limiter friction plate, torque limiter and wind turbine generator set |
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- 2021-07-09 CN CN202110777885.6A patent/CN113464581A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB753732A (en) * | 1953-01-27 | 1956-08-01 | Ferodo Sa | Improvements in or relating to friction clutches |
| GB8422478D0 (en) * | 1984-09-05 | 1984-10-10 | Handling Consultants Ltd | Torque limiter coupling |
| CN201209632Y (en) * | 2008-06-06 | 2009-03-18 | 无锡创明传动工程有限公司 | Coupler torquemoment overload protection device |
| CN205956240U (en) * | 2016-07-15 | 2017-02-15 | 中船重工重庆智能装备工程设计有限公司 | Novel high -speed shaft coupling moment of torsion overload protection device |
| CN106907302A (en) * | 2017-03-10 | 2017-06-30 | 利恩传动设备（常州）有限公司 | Two-way asymmetric breakaway torque limiter |
| CN206582065U (en) * | 2017-03-10 | 2017-10-24 | 利恩传动设备（常州）有限公司 | Two-way asymmetric breakaway torque limiter |
| CN107339337A (en) * | 2017-03-10 | 2017-11-10 | 利恩传动设备（常州）有限公司 | Unidirectional breakaway torque limiter |
| CN112576452A (en) * | 2019-09-30 | 2021-03-30 | 艾德温股份有限公司 | Drive train of a wind turbine comprising a torque limiter, wind turbine |
| CN213511794U (en) * | 2020-08-03 | 2021-06-22 | 三一重能股份有限公司 | Torque limiter friction plate, torque limiter and wind turbine generator set |
| CN113007028A (en) * | 2021-03-23 | 2021-06-22 | 上海电气风电集团股份有限公司 | Wind generating set |
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