CN109555645A - It is tensioned transmission device, pitch-controlled system and wind power generating set - Google Patents
It is tensioned transmission device, pitch-controlled system and wind power generating set Download PDFInfo
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- CN109555645A CN109555645A CN201710889667.5A CN201710889667A CN109555645A CN 109555645 A CN109555645 A CN 109555645A CN 201710889667 A CN201710889667 A CN 201710889667A CN 109555645 A CN109555645 A CN 109555645A
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- traction element
- rotary part
- tensioning wheel
- transmission device
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Classifications
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
-
- 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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
-
- 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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The present invention provides a kind of tensioning transmission device, pitch-controlled system and wind power generating set.It is tensioned transmission device to be driven by traction element and the cooperation of the second rotary part, tensioning transmission device includes: fixed pedestal；First rotary part, is pivotally connected to fixed pedestal；Tensioning wheel, the outside of the traction element between the first rotary part and the second rotary part, and tensioning wheel can be swung under the thrust of traction element along desired trajectory；Flexible adjustment component can cooperate with tensioning wheel, make tensioning wheel by side compression traction element in traction element lateral outside traction element, and make the amplitude of fluctuation of limit tensioning wheel.Therefore, can be realized can improve the force environment of traction element at work, avoid traction element local pressure from concentrating, limit the cornerite range of traction element, it avoids traction element from occurring jumping tooth or local fracture phenomenon, improves one or more purposes in the reliability of tensioning transmission device.
Description
Technical field
The present invention relates to technical field of mechanical transmission more particularly to a kind of tensioning transmission devices, pitch-controlled system and wind-force
Generating set.
Background technique
As the important link in power transmission, the service life and use reliability of transmission device are particularly important.But
It is, generally to ensure that traction element can be fully wrapped in outside rotary part, to need through tensioning apparatus to driving component
Apply tensile force.
Such as in belt drive unit, in order to ensure belt can be fully wrapped in outside two drive pulleys, need
Tensile force is applied to belt by tensioning apparatus, thereby guarantees that belt has enough tension always during the work time, avoids
Any sliding occurs for belt.However in specific work process, the belt positioned at driving wheel two sides is often by different
Pulling force, so the phenomenon that local pressure concentration can occur in the belt part of the side of driving wheel, once belt occur part by
The phenomenon that power is concentrated, then may cause the problem of belt is broken, and then transmission device is caused to fail.
Especially in technical field of wind power generation, the pitch-controlled system of blade, the reliability of traction element (such as toothed belt)
It is even more most important.Also, in the specific implementation process of pitch-controlled system, it will usually be mounted to rotary part in traction element
Afterwards, initial pretightening force is applied to traction element in certain tension range by pre-tightening apparatus.And traction element is by pre- next,
Inside configuration can then generate internal stress, be possible to if once traction element, two sides are by unbalanced pulling force during the work time
Cause fracture, and then transmission device is caused to fail.However in existing scheme, traction element only can satisfy in pitch drive system
Cornerite requirement, the problems in local pressure collection of traction element can not be adjusted, be easy to cause that traction element jumps tooth or part is disconnected
The problem of splitting.
Therefore, a kind of new tensioning transmission device, pitch-controlled system and wind power generating set are needed.
Summary of the invention
According to an embodiment of the invention, providing a kind of tensioning transmission device, pitch-controlled system and wind power generating set, energy
Enough realize can improve the force environment of traction element at work, and traction element local pressure is avoided to concentrate, and cause traction
Jumping tooth or local fracture phenomenon and traction element being caused to fail occur in component, and limits the cornerite range of traction element, improves and opens
One or more purposes in the reliability of tight transmission device.
According to an aspect of an embodiment of the present invention, a kind of tensioning transmission device is provided, tensioning transmission device is by leading
Draw component and the cooperation of the second rotary part is driven, tensioning transmission device includes: fixed pedestal；First rotary part, pivotally connects
It is connected to fixed pedestal；Tensioning wheel, the outside of the traction element between the first rotary part and the second rotary part, and
Bearing up pulley can be swung under the thrust of traction element along desired trajectory；And flexible adjustment component, it can match with tensioning wheel
It closes, makes tensioning wheel by side compression traction element in traction element lateral outside traction element, and make the amplitude of fluctuation of limit tensioning wheel.
According to an aspect of an embodiment of the present invention, fixed pedestal includes: fixed part, is fixed on outside by connector
Support construction；And extension, projectedly it is arranged on fixed part, and have the first accommodating for receiving the first rotary part empty
Between.
According to an aspect of an embodiment of the present invention, tensioning transmission device further includes tensioning wheel holding member, and tensioning wheel is protected
It holds component connection tensioning wheel and desired trajectory is limited to arc track.
According to an aspect of an embodiment of the present invention, tensioning wheel holding member is connected to fixed pedestal.
According to an aspect of an embodiment of the present invention, tensioning wheel holding member includes: coupling part, is rotatably connected at
Fixed pedestal；And support section, it is connect with coupling part and tensioning wheel, and around the first rotation under the drive of coupling part
The rotary shaft of component rotates, by the arc track being limited to desired trajectory centered on the rotary shaft of the first rotary part.
According to an aspect of an embodiment of the present invention, support section includes the second accommodating sky being connected to the first rotary part
Between, tensioning wheel is supported in the second accommodating space, to pass through the second accommodating space shape between the first rotary part and tensioning wheel
Space is passed around at what can be passed around for traction element.
According to an aspect of an embodiment of the present invention, tensioning wheel holding member includes arc guide rail, arc guide rail
Desired trajectory is limited to the arc track centered on the rotary shaft of the first rotary part by road, and tensioning wheel is slidably connected to
Arc guide rail.
According to an aspect of an embodiment of the present invention, tensioning transmission device further includes limiting component, limiting component and tensioning
Holding member cooperation is taken turns, to make the full swing amplitude of limit tensioning wheel.
According to an aspect of an embodiment of the present invention, tensioning transmission device includes a tensioning wheel.
According to an aspect of an embodiment of the present invention, flexible adjustment component be connected to tensioning wheel and first fixed structure it
Between.
According to an aspect of an embodiment of the present invention, tensioning transmission device includes two tensioning wheels, two tensioning wheel difference
Between the first rotary part and the second rotary part, two tensioning wheels can be made from traction element by flexible adjustment component
Outside simultaneously opposite to each other compress traction element and along desired trajectory towards same direction swing.
According to an aspect of an embodiment of the present invention, flexible adjustment component is hingedly connected in two tensioning wheels；Alternatively,
Flexible adjustment component is hingedly connected between two tensioning wheels and corresponding second fixed structure.
According to an aspect of an embodiment of the present invention, flexible adjustment component includes elastic damper or spring.
Other side according to an embodiment of the present invention additionally provides a kind of pitch-controlled system, for driving wind-driven generator
The blade of group carries out variable pitch, and blade is rotatably connected to the wheel hub of wind power generating set, pitch-controlled system packet by pitch variable bearings
It includes: driving motor；Above-mentioned tensioning transmission device, wherein the first rotary part is connect with driving motor；Second rotary part,
Second rotary part is connect with root of blade；And traction element, traction element surround the first rotary part and the second rotating part
Part, and be driven respectively with the first rotary part and the cooperation of the second rotary part.
Other side according to an embodiment of the present invention, fixed pedestal are connected to wheel hub.
Other side according to an embodiment of the present invention, traction element are toothed belt.
Other side according to an embodiment of the present invention, the second rotary part are the pitch variable bearings connecting with root of blade
Outer ring, traction element and outer ring cooperation rotate.
Other side according to an embodiment of the present invention, the second rotary part are the pitch variable bearings connecting with root of blade
Inner ring, inner ring include the circular extent along the axially projecting outer ring in pitch variable bearings of pitch variable bearings, and traction element passes through ring
Shape extension and inner ring cooperation rotate.
Other side according to an embodiment of the present invention, the second rotary part are the transition for the annular connecting with root of blade
Linkage section, traction element are rotated by transition connection section and blade cooperation.
Other side according to an embodiment of the present invention, transition connection section are an integral structure with blade.
Other side according to an embodiment of the present invention, the periphery of transition connection section are provided with annular radially projectingly
Supporting surface, traction element are rotated by supporting surface and blade cooperation.
Another aspect according to an embodiment of the present invention additionally provides a kind of wind power generating set, including above-mentioned variable pitch
System.
To sum up, tensioning transmission device, pitch-controlled system and the wind power generating set of the embodiment of the present invention, using traction element
It is driven around the first rotary part and the second rotary part, and respectively with the first rotary part and the cooperation of the second rotary part,
Wherein, one of the first rotary part and the second rotary part are driving wheels, are connect with driving mechanism, and another one is driven
Wheel, connect with executing agency.First rotary part is rotatably supported by fixed pedestal.And tensioning wheel is supported in the first rotation
The outside of traction element between rotation member and the second rotary part, and tensioning wheel can be under the thrust of traction element
It is swung along desired trajectory.Cooperated by flexible adjustment component and tensioning wheel, elastic pulling force can be provided for tensioning wheel, make tensioning wheel
It can be by side compression traction element in traction element lateral outside traction element, meanwhile, it is capable to pass through flexible adjustment component system limit
The hunting range of bearing up pulley, avoiding the cornerite of traction element is more than zone of reasonableness.Therefore, traction element can be improved at work
Force environment avoids traction element local pressure from concentrating, and occurs jumping tooth or local fracture phenomenon, and then lead to traction element
Failure.Simultaneously by the way that the cornerite of traction element is limited in zone of reasonableness, it can be improved the reliability of tensioning transmission device, guarantee
The variable pitch precision of pitch-controlled system.In addition, flexible adjustment component can also be acted on by its flexible adjustment alleviates traction element institute
The shock loading received further increases the use reliability of traction element.
Detailed description of the invention
The present invention may be better understood from the description with reference to the accompanying drawing to a specific embodiment of the invention,
In:
By reading detailed description of non-limiting embodiments referring to the drawings, other feature of the invention,
Objects and advantages will become more apparent upon, wherein the same or similar appended drawing reference indicates the same or similar feature.
Fig. 1 is the theory structure schematic diagram of tensioning transmission device according to an embodiment of the invention；
Fig. 2 is the principle schematic diagram of tensioning transmission device in accordance with another embodiment of the present invention；
Fig. 3 is a kind of signal of state of a specific example of the tensioning transmission device based on structural principle shown in Fig. 2
Figure；
Fig. 4 is the schematic diagram of another state of tensioning transmission device shown in Fig. 3；
Fig. 5 is the diagrammatic cross-section after cutting along longitudinal direction of tensioning transmission device shown in Fig. 3；
Fig. 6 is the use state diagram of the tensioning transmission device of further embodiment according to the present invention；
Fig. 7 is the use state diagram of the tensioning transmission device of another embodiment according to the present invention；
Fig. 8 is the use state diagram of the tensioning transmission device of still further embodiment according to the present invention；
Fig. 9 is a tool of the second rotary part and traction element cooperation in pitch-controlled system according to an embodiment of the present invention
The exemplary the schematic diagram of the section structure of body；
It is another that Figure 10 is that the second rotary part and traction element in pitch-controlled system according to an embodiment of the present invention cooperate
The schematic diagram of the section structure of a specific example；
It is another that Figure 11 is that the second rotary part and traction element in pitch-controlled system according to an embodiment of the present invention cooperate
The schematic diagram of the section structure of a specific example.
Wherein:
100- is tensioned transmission device；101- is tensioned transmission device；102- is tensioned transmission device；103- is tensioned transmission device；
104- is tensioned transmission device；
11- fixed pedestal；111- fixed part；111a- installing port；The extension 112-；The first rotary part of 12-；
121- rolling bearing；122- end cap；The first tensioning wheel of 14-；141- rolling bearing；142- end cap；The second tensioning wheel of 15-；16-
Bearing up pulley holding member；The first tensioner arm of 16a-；The second tensioner arm of 16b-；The coupling part 161-；162- support section；162a-
One plate body；The second plate body of 162b-；The second accommodating space of 162c-；163- sliding bearing；164- guiding groove；17- flexible adjustment portion
Part；18- limiting component；
20- driving wheel；
30- pitch variable bearings；The outer ring 31-；32- inner ring；321- circular extent；322- gear teeth；
40- wheel hub；
50- root of blade；501- gear teeth；51- transition connection section；511- circular connector；512- supporting surface；513- tooth
The gear teeth；
60- traction element.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.In attached drawing and following
Description in, at least part of known features and technology are not shown, unnecessary fuzzy to avoid causing the present invention；
Also, for clarity, may be exaggerated the size of part-structure.Identical appended drawing reference indicates same or similar knot in figure
Structure, thus the detailed description that them will be omitted.In addition, feature described below, structure or characteristic can be with any suitable
Mode be incorporated in one or more embodiments.
The noun of locality of middle appearance described below is direction shown in figure, is not to tensioning transmission device of the invention
And the specific structure of pitch-controlled system is defined.In the description of the present invention, it is also necessary to explanation, unless otherwise specific
Regulation and restriction, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to
It is detachably connected, or is integrally connected；It can be directly connected, can also be indirectly connected.For the ordinary skill people of this field
For member, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Tensioning transmission device provided in an embodiment of the present invention, is connected between driving mechanism and executing agency, by driving machine
The power of structure is transferred to executing agency, to drive executing agency to work, and is tensioned transmission device at work, traction therein
The tensile force of component and the cornerite of formation can be controlled in zone of reasonableness always.Therefore it can increase tensioning transmission device
Use reliability, and the service life of traction element can be increased.
For a better understanding of the present invention, below with reference to Fig. 1 to Figure 11 tensioning transmission device according to an embodiment of the present invention
And pitch-controlled system is illustrated.
Fig. 1 is the theory structure schematic diagram of tensioning transmission device 100 according to an embodiment of the invention.It needs to illustrate
It is the principle that tensioning transmission device 100 is schematically shown only in Fig. 1, so the part-structure in tensioning transmission device 100
It has been not shown, and shows tensioning transmission device 100 in Fig. 1 and pass through traction element 60 and the second rotary part (illustratively,
For rotating wheel 20) cooperate transmission and is in original state (namely unstressed state).As shown in Figure 1, in one embodiment
In, tensioning transmission device 100 includes: that fixed pedestal 11 (only illustrates the fixed pivot of the first rotary part 12, institute in Fig. 1
To need to combine the specific example in Fig. 3), the first rotary part 12, tensioning wheel (i.e. the second tensioning wheel 15) and flexible adjustment portion
Part 17.Traction element 60 around the first rotary part 12 and the second rotary part, and respectively with the first rotary part 12 and
Two rotary parts cooperation transmission, wherein one of the first rotary part 12 and the second rotary part are driving wheels, with driving machine
Structure connection；Another one is driven wheel, is connect with executing agency.First rotary part 12 is by fixed pedestal 11 by rotatable twelve Earthly Branches
Support.And tensioning wheel is supported in the outside of the traction element 60 between the first rotary part 12 and the second rotary part, and is tensioned
Wheel can be swung under the thrust of traction element along desired trajectory.And matched by flexible adjustment component 17 with tensioning wheel
It closes, tensile force can be provided for tensioning wheel, tensioning wheel is enable to be led by side compression in traction element 60 lateral outside traction element 60
Draw component 60, meanwhile, flexible adjustment component 17 can also make the hunting range of limit tensioning wheel.
As a result, when the first rotary part 12 is by traction element 60 and the cooperation transmission of the second rotary part, traction element
60 are there is the elastic inconsistent situation in two sides by different pulling force respectively in 12 two sides of the first rotary part.That is, tractive unit
Part 60 from initial position (position shown in Fig. 1) can move to forced position (not shown), and therefore, traction element 60 is located at the
The side of one rotary part, 12 two sides will receive different pulling force (such as the pulling force that 60 left side of traction element is subject to is greater than right edge).
At this point, providing pulling force by flexible adjustment component 17 for tensioning wheel limits tensioning wheel under 60 thrust of traction element towards remote
Pulling force suffered by 60 pilled-in selvedge side of traction element can be transferred to slack list side (i.e. by the amplitude of fluctuation from 60 direction of traction element
Tensioning wheel can compress the right edge of traction element 60).
Therefore the stress of traction element 60 can be adjusted during the work time, to reduce the needs of traction element 60
Initial pretightening force.Therefore, the force environment of traction element 60 at work can be improved, avoid 60 local pressure collection of traction element
In, and cause traction element 60 to occur jumping tooth or local fracture phenomenon, while can also will lead by flexible adjustment component 17
The cornerite for drawing component 60 limits in the reasonable scope, to improve the reliability of tensioning transmission device 100.In addition, flexible adjustment
Component 17 can also be acted on by its flexible adjustment alleviates shock loading suffered by traction element 60, to improve traction element 60
Use reliability.
Fig. 2 is the principle schematic diagram of tensioning transmission device 101 in accordance with another embodiment of the present invention；Fig. 3 is base
A kind of schematic diagram of state of one specific example of the tensioning transmission device 101 of the structural principle shown in Fig. 2；Fig. 4 is Fig. 3 institute
Show the schematic diagram of another state of tensioning transmission device 101；Fig. 5 is that tensioning transmission device 101 shown in Fig. 3 cuts open along longitudinal direction
Diagrammatic cross-section after cutting.It should be noted that Fig. 3 to Fig. 5 is that a specific structure based on the structural principle in Fig. 3 shows
Example.
Tensioning transmission device 101 in the present embodiment includes: fixed pedestal 11, the first rotary part 12, the first tensioning wheel
14, the second tensioning wheel 15, tensioning wheel holding member 16 and flexible adjustment component 17.Transmission device is tensioned shown in Fig. 1
Only there is a tensioning wheel, i.e. the second tensioning wheel 15 in 100；And there are two Fig. 2 has in the tensioning transmission device 101 into Fig. 5
Tensioning wheel, i.e. the first tensioning wheel 14 and the second tensioning wheel 15.Only to have, there are two the tensioning transmission devices 101 of tensioning wheel to be below
Example is described in detail, and removes the first tensioning wheel 14 in the structure basis of tensioning transmission device 101 and be tensioned with first
Take turns the 14 relevant structures then available tensioning transmission device 100 for there was only the second tensioning wheel 15.Illustratively, in the present embodiment
In, traction element 60 can be toothed belt, and the first rotary part 12 is the belt pulley with axis hole, to pass through the axis hole and and drive
The output shaft transmission connection of the retarder of dynamic motor connection.Second rotary part is the transmission that can be connect with other executing agencies
Wheel 20.
A specific example according to the present invention, fixed pedestal 11 include fixed part 111 and extension 112, wherein
Fixed part 111 can be fixed on external support structure (not shown) by connector, and extension 112 is projectedly set
It sets on fixed part 111, can be used for receiving the first rotary part 12.In the present embodiment, illustratively, fixed part
111 be disk-like structure, and offers installing port 111a in the approximate centre position of disk-like structure, and in fixed part 111
Edge be provided with multiple connecting holes (namely composition flanged joint side, be not shown in the figure).And accordingly, it needs to prop up in outside
The flanged joint side to match with fixed part 111 is provided on support structure.It as a result, can be by fixed part 111 along installation
Mouth 111a is sleeved on outside the retarder connecting with driving motor, and using fastener via the connection being arranged on fixed part 111
Fixed pedestal 11 is fixed on external support structure by the flange hole on hole and the flanged joint side of external support structure.Certainly, originally
Inventive embodiments for external support structure without limit, as long as external support structure can play support to fixed pedestal 11
Effect to be pivotably supported the first rotary part 12 by fixed pedestal 11, and enables the first rotary part 12 and traction
The purpose driven to driving wheel 20 is realized in the cooperation of component 60.
In the present embodiment, extension 112 is the similar tube-in-tube structure that protrusion is arranged on fixed part 111, that is, is prolonged
Extending portion point 112 has the first accommodating space (not indicating in figure) for receiving the first rotary part 12.Similar tube-in-tube structure
Refer to, in order to enable traction element 60 around the first rotary part 12, the wall portion in space locating for the first rotary part 12 is along the
The circumferential direction of one rotary part 12 cannot be closed, and the first rotary part 12 is circumferentially preset with energy between extension 112
It is enough to pass around space for what traction element 60 passed around.In an alternative embodiment, in order to which the structure for meeting fixed pedestal 11 is strong
Degree, fixed part 111 and extension 112 are an integral structure.First rotary part 12 passes through rolling bearing 121 rotationally
It is arranged in the first accommodating space of extension 112, so that the first rotary part 12 can be rotated around its rotary shaft.It can be with
Understand that ground, the first rotary part 12 can also be rotatably supported in the first accommodating space by sliding bearing.By the first rotation
After rotation member 12 is mounted in the first accommodating space of extension 112, can by end cap 122 be the first rotary part 12 with
And rolling bearing 121 provides axial pressing force.
Certainly, for the specific structure of the fixed part 111 of fixed pedestal 11 and extension 112, implementation of the invention
Example is simultaneously not limited.Fixed part 111 can also be made of other axle beds either frame structure, and extension 112
It can also be the boss of other forms, rotatably support the first rotary part 12 as long as can realize by extension 112
Purpose.
In addition, the structure and function based on the above fixed pedestal 11, it is possible to understand that ground, in other exemplary embodiments
In, fixed pedestal 11 can also be to be made of plate or frame structure, and external support knot can be fixed on by fastener
On structure.Certainly, the first rotary part 12 is also possible to the belt pulley with rotation axis, at this point, the first rotary part 12 then can be with
It is connected on the fixed pedestal 11 being made of plate or frame structure by its rotary shaft using rotatable connection type.
Continuing with referring to Fig. 3 to Fig. 5, according to one embodiment of present invention, tensioning transmission device 101 further includes tensioning wheel
Holding member 16, desired trajectory is limited to arc track, and tensioning wheel holding member by tensioning wheel holding member 16
16 are separately connected the first tensioning wheel 14 and the second tensioning wheel 15, and the first tensioning wheel 14 and the second tensioning wheel 15 are respectively supported at
60 two sides of traction element between first rotary part 12 and driving wheel 20, and can be swung around the same rotary shaft.
In the present embodiment, illustratively, since tensioning transmission device 101 includes the first tensioning wheel 14 and the second tensioning wheel
15, accordingly, there are two tensioner arms, i.e. the first tensioner arm 16a and the second tensioner arm 16b for the tool of tensioning wheel holding member 16, wherein
First one end tensioner arm 16a is rotatably connected at fixed pedestal 11, and the other end rotatably supports the first tensioning wheel 14；And the
Two one end tensioner arm 16b are rotatably connected at fixed pedestal 11, and the other end rotatably supports the second tensioning wheel 15.For letter
Change the structure and assemble flow of tensioning transmission device 101, the first tensioner arm 16a and the second tensioner arm 16b knot having the same
Structure, below only to be illustrated for connecting the first tensioner arm 16a of the first tensioning wheel 14 to tensioning wheel holding member 16.
Specifically, the first tensioner arm 16a includes coupling part 161 and support section 162.Coupling part 161 is connected to solid
Determine on the extension 112 of pedestal 11, due to the structure that extension 112 is the similar sleeve mentioned in above-described embodiment, institute
With accordingly, coupling part 161 is provided with the installing port (not indicating in figure) being adapted with extension 112.Connect as a result,
It is outer (such as Fig. 5 institute that socket part point 161 can rotationally be disposed around extension 112 using sliding bearing 163 by the installing port
Show).Coupling part 161 is able to drive support section 162 connected to it and turns around the rotary shaft of the first rotary part 12 as a result,
It is dynamic.That is, above-mentioned desired trajectory is limited to the first rotary part by the first tensioner arm 16a in the structure with reference to shown in Fig. 4
Arc track centered on 12 rotary shaft.But the rotation center of the first tensioner arm 16a and the second tensioner arm 16b are not limited
It is consistent with the rotating shaft center of the first rotary part 12.
Support section 162 includes the first plate body 162a and the second plate body 162b opposite to each other and being arranged in parallel, the first plate
The second accommodating space 162c, the second accommodating space 162c is formed between body 162a and the second plate body 162b and in fixed pedestal 11
The the first accommodating space connection being arranged in extension 112, that is to say, that the second accommodating space 162c and the first rotary part 12
Connection.The axial ends of first tensioning wheel 14 passes through rolling bearing 141 respectively and is rotatably supported in the first plate body 162a and
Two plate body 162b.Illustratively, rolling bearing 141 may be replaced by sliding bearing.Second tensioning wheel 14 is arranged second
It can be that the second tensioning wheel 14 and rolling bearing 141 provide axial pressing force by end cap 142 after in accommodating space 162c.
Can be formed between the first tensioning wheel 14 and the first rotary part 12 by the second accommodating space 162c can be for traction element
What 60 (i.e. toothed belts) passed around passes around space.Second tensioner arm 16b equally has the second accommodating space 162c, passes through the second tensioning
Second accommodating space 162c of arm 16b setting can be formed between the second tensioning wheel 15 and the first rotary part 12 for tractive unit
What part 60 passed around passes around space.
Referring to the constituted mode of the first above-mentioned tensioner arm 16a, the second tensioner arm 16b has and the first tensioner arm 16a phase
Same structure, only the second tensioner arm 16b is by its support section (not indicating in figure) with symmetrical with the first tensioner arm 16a
Mode is installed on the extension 112 of fixed pedestal 11, and the coupling part 161 of the second tensioner arm 16b is enclosed in first
161 outside (as shown in Figure 5) of coupling part of tensioner arm 16a.Therefore, the first tensioning wheel 14 and the symmetrical status of the second tensioning wheel 15
In the two sides of the first rotary part 12, so that the company between the first rotary part 12, the first tensioning wheel 14 and the second tensioning wheel 15
Line is configured triangle.
Traction element 60 can be tensioned via the first accommodating space with the first tensioner arm 16a and second is separately positioned on as a result,
The second accommodating space 162c on arm 16b, between the first tensioning wheel 14 and the first rotary part 12 and the second tensioning wheel 15
And first pass around and mistake between rotary part 12, and is centered around the periphery of the first rotary part 12 and driving wheel 20 simultaneously.Simultaneously
Two tensioning wheels are located at 60 outside of traction element and compress traction element 60 opposite to each other.In addition, when tensioning transmission device 101
When only including a tensioning wheel, then by a tensioning wheel by a side compression traction element 60 of traction element 60.
In addition, in other examples, it is possible to understand that ground, the support portion of the first tensioner arm 16a and the second tensioner arm 16b
Divide 162 can also be made of frame structure, to form the second above-mentioned accommodating space 162c by frame.In addition, other
In some embodiments, the first tensioner arm 16a and the second tensioner arm 16b can also be installed in rotation on removing for fixed pedestal 11 and prolong
Part other than extending portion point 112, at this point, desired trajectory is then limited to its coupling part 161 by tensioning wheel holding member 16
Center is the arc track of rotation center.Certain first tensioner arm 16a and the second tensioner arm 16b can also be rotatably connected to
In other structures in addition to fixed pedestal 11, the first tensioning wheel 14 and the second tensioning wheel 15 are supported respectively as long as can be realized
60 two sides of traction element between the first rotary part 12 and driving wheel 20, and make the first tensioning wheel 14 and the second tensioning wheel 15
It is swung along scheduled arc track.
Shown in referring to figs. 2 and 3, an exemplary embodiment of the present invention, flexible adjustment component 17 is connected to
Between first tensioning wheel 14 and the second tensioning wheel 15, so that the first tensioning wheel 14 and the second tensioning wheel 15 are formed mutually each other
The pulling force of restriction, to enable the first tensioning wheel 14 and the second tensioning wheel 15 from the outside of traction element 60 while press opposite to each other
Tight traction element 60, and make the amplitude of fluctuation of limit the first tensioning wheel 14 and the second tensioning wheel 15.
It should be noted that in order to realize that the first tensioning wheel 14 and the second tensioning wheel 15 are swung along scheduled arc track,
Flexible adjustment component 17 needs to be connected between the first tensioning wheel 14 and the second tensioning wheel 15.For example, flexible adjustment component 17 can
To be connected using the connectors such as universal joint or flake bearing with corresponding first tensioning wheel 14 and the second tensioning wheel 15.
Specifically, flexible adjustment component 17 can be variable using various total lengths and can limit the first tensioning wheel 14 and the
Two tensioning wheels 15 are directed away from the attachment device of the amplitude of fluctuation in mutual direction.For example, flexible adjustment component 17 can be bullet
Spring.When flexible adjustment component 17 is spring, spring can be hingedly connected in the first tensioner arm 16a and the second tensioner arm
16b, and need to set the range of stretch of spring.That is, spring hinge is connected in succession the first tensioner arm 16a and
After second tensioner arm 16b, the first tensioner arm 16a and the second tensioner arm 16b is set to generate the pulling force mutually restricted each other by spring,
To make the amplitude of fluctuation of limit the first tensioning wheel 14 and the second tensioning wheel 15, i.e., the cornerite of traction element 60 is limited.
In addition, the number of the flexible adjustment component 17 between the first tensioning wheel 14 and the second tensioning wheel 15 can be as in Fig. 2
Shown in one, or it is multiple.And it is adjusted when multiple elasticity are arranged between the first tensioning wheel 14 and the second tensioning wheel 15
Component 17 is saved, the structure of each flexible adjustment component 17 can also be different.
Illustratively, when traction element 60 is toothed belt, pass through traction element 60 and driving wheel in the first rotary part 12
During 20 cooperation transmissions, as shown in Fig. 2, when the first rotary part 12 starts and traction element under the driving of driving mechanism
When 60 engagement rotation, for example, the first rotary part 12 towards rotationally clockwise when (according to direction of observation shown in Fig. 2),
Since the part for being located at 12 left side of the first rotary part of traction element 60 is first begin to that driving wheel 20 is pulled to rotate.Namely
It says, the pulling force that the part for being located at 12 left side of the first rotary part of traction element 60 is subject to is greater than traction element 60 and is located at the first rotation
The pulling force that the part on 12 right side of rotation member is subject to, then traction element 60 shows respectively in the two sides of the first rotary part 12 at this time
Pilled-in selvedge and slack list.
Therefore, the first tensioning wheel 14 being pressed on 60 part of traction element in 12 left side of the first rotary part then will receive
Along clockwise direction lift power, meanwhile, the first tensioning wheel 14 can be pulled by flexible adjustment component 17 second tensioning wheel 15 with
With the first tensioning wheel 14 together along the arc track limited by tensioning wheel holding member 16 along clockwise oscillation.So tractive unit
The slack list that part 60 is located at the right side of the first rotary part 12 will receive at this time swung by the second tensioning wheel 15 and provide along clockwise
Pressing force, the pulling force so as to which 60 pilled-in selvedge of traction element to be subject to is transferred to slack list side.First tensioning wheel 14 and as a result,
Two tensioning wheels 15 are swung by the pulling force effect of flexible adjustment component 17 towards same direction, being capable of adjust automatically traction element 60
Stress in 12 two sides of the first rotary part.In this way, the pretightning force demand initial to traction element 60 can be reduced, therefore
The force environment of traction element 60 can be improved, delay that the fatigue of traction element 60 is impaired, reduces tractive unit so as to realize
The purpose of the service life of 60 failure risk of part, increase traction element 60, and avoid 60 local pressure of traction element from concentrating and occur
Fracture, to improve the use reliability of traction element 60.
In addition, the amplitude of fluctuation of first tensioning wheel 14 and the second tensioning wheel 15 is made by setting flexible adjustment component 17
About.It is to be appreciated that passing through the elastic range for adjusting flexible adjustment component 17, thus it is possible to vary the first tensioner arm 16a and second
The range of be in angle between tight arm 16b, that is, change the opening distance between the first tensioning wheel 14 and the second tensioning wheel 15
Range, and then realize adjust traction element 60 cornerite range purpose.In an alternative embodiment, illustratively,
The cornerite range of traction element 60 can be preset as 150 ° to 180 °, the cornerite range based on traction element 60 can correspond to
The elastic range of ground setting flexible adjustment component 17.Therefore it can guarantee that the cornerite of traction element 60 is controlled in reasonably always
In range, avoid the cornerite between traction element 60 and the first rotary part 12 is too small from slippage phenomenon occur.
Moreover, because the distance between the first tensioning wheel 14 and the second tensioning wheel 15 can flexible adjustment, so drawing
It, can be via the first tensioning wheel during the work of component 60 (illustratively, in the state that traction element 60 is loaded uniform)
14 and second tensioning wheel 15 be always traction element 60 provide basis pretightning force, so as to improve the use of traction element 60
Reliability.And when traction element 60 is influenced by alternating load, additionally it is possible to be made by the flexible adjustment of flexible adjustment component 17
The shock loading being subject to traction element 60 is alleviated, avoids traction element 60 from being influenced to be broken by shock loading.
In an alternative embodiment, flexible adjustment component 17 can also include elastic damper, i.e. show in Fig. 2
, while there is spring and be capable of providing the hydraulic cylinder of reaction force.Herein it should be noted that for including hydraulic cylinder
Flexible adjustment component 17, how to control in hydraulic cylinder it is hydraulic so that hydraulic cylinder is worked, be the common of hydraulic machinery field
Technical staff is known, therefore on the basis of the technical solution that the present invention discloses, those skilled in the art can make hydraulic oil
Cylinder realizes the function of buffering connection.For example, each hydraulic cylinder can be made to be connected to hydraulic station, hydraulic main website is connected with controller,
The hydraulic of hydraulic station output is controlled by controller, to control the pressure in hydraulic cylinder, is become in the total length of hydraulic cylinder
Reaction force is provided to the first tensioning wheel 14 and the second tensioning wheel 15 while change.Therefore, in traction element 60 by alternating download
When lotus, the vibration of the first tensioning wheel 14 and the second tensioning wheel 15 can be absorbed by the damper in flexible adjustment component 17, is kept away
Exempt from the first tensioning wheel 14 and the second tensioning wheel 15 frequently, with overrunning is swung, and fatigue damage is caused to traction element 60.
As described in Figure 4, in addition, in an alternative embodiment, the first tensioning wheel 14 and the second tensioning wheel in order to prevent
15 amplitudes of fluctuation are excessive, and cannot the stress to traction element 60 effectively adjusted, be tensioned transmission device 101 in can also set
It is equipped with limiting component 18.Illustratively, limiting component 18 is stop block, and the company of the first tensioner arm 16a is arranged in limiting component 18
At the position of the top edge of the coupling part (not indicated in figure) of close second tensioner arm 16b in socket part point 161.Due to
The coupling part of second tensioner arm 16b is set in outside the coupling part 161 of the first tensioner arm 16a, so limiting component 18 can
Cooperate with the top edge of the coupling part of the second tensioner arm 16b, it is opposite with system limit the first tensioner arm 16a and the second tensioner arm 16b
Mutual rotational angle to limit the minimum value of the cornerite of traction element 60, therefore can guarantee the biography of traction element 60
Dynamic reliability.Certainly, the embodiment of the present invention is not limited the specific setting position of limiting component 18 and setting structure,
As long as can be arranged along the motion path of the first tensioner arm 16a and the second tensioner arm 16b, realize to the first tensioning wheel 14 and the
The full swing amplitude of two tensioning wheels 15 carries out the purpose of limit processed.
In addition, in other examples, the quantity of limiting component 18 can also be two, such as by two limiting components
18 are respectively set 111 edge of fixed part of fixed pedestal 11 shown in Fig. 4 and are located at the left side of the first tensioner arm 16a
The right side of (according to direction of observation shown in Fig. 4) and the second tensioner arm 16b (according to direction of observation shown in Fig. 4).To pass through
Two stop blocks are in the rotation process of the first tensioner arm 16a and the second tensioner arm 16b respectively to the first tensioner arm 16a and second
The full swing amplitude of tensioner arm 16b carries out limit processed, i.e., limits in the reasonable scope the cornerite of traction element 60, led with improving
Draw the reliability of the transmission of component 60.
In addition, the present invention for flexible adjustment component 17 set-up mode and be not limited, in other examples,
Flexible adjustment component 17 can also be not attached between the first tensioning wheel 14 and the second tensioning wheel 15.Fig. 6 is according to the present invention again
The principle schematic diagram of the tensioning transmission device 102 of one embodiment；Fig. 7 is the tensioning of another embodiment according to the present invention
The principle schematic diagram of transmission device 103.In order to make it easy to understand, embodiment shown in Fig. 6 and Fig. 7 and above-mentioned tensioning are driven
Identical component uses identical label in device 101, and the component having been described above will not be repeated again.
As shown in fig. 6, in an alternative embodiment, tensioning transmission device 102 can also include two flexible adjustments
Component 17, wherein a flexible adjustment component 17 is hingedly connected between the first tensioner arm 16a and the second fixed structure, another
A flexible adjustment component 17 be hingedly connected between the second tensioner arm 16b and the second fixed structure (the second fixed structure is not shown,
Only illustrate the fixing end of two flexible adjustment components 17).And two flexible adjustment components 17 are connected to first simultaneously
Side (the first tensioner arm 16a and the second tensioner arm i.e. shown in fig. 6 away from each other of tight arm 16a and the second tensioner arm 16b
The top of 16b).To be respectively by flexible adjustment component 17 during the first tensioning wheel 14 and the swing of the second tensioning wheel 15
First tensioning wheel 14 and the second tensioning wheel 15 provide thrust, to be matched each other by the first tensioning wheel 14 and the second tensioning wheel 15
It closes, realizes the purpose that 60 stress of traction element is adjusted automatically.That is, passing through the initial pressure of flexible adjustment component 17, it is
Traction element 60 provides a part of pretightning force；And go out when traction element 60 is inconsistent in the two sides stress of the first rotary part 12
When existing pilled-in selvedge and slack list, flexible adjustment component 17 is capable of the stress of elasticity adjustment traction element 60 pilled-in selvedge and slack list, avoids drawing
There is the problems in local pressure collection in component 60.When flexible adjustment component 17 is elastic damper, additionally it is possible to buffer tractive unit
The shock loading that part 60 is subject to.
As shown in fig. 7, in the present embodiment, tensioning transmission device 103 equally includes two flexible adjustment components 17, and
And one of flexible adjustment component 17 is hingedly connected between the first tensioner arm 16a and the second fixed structure, another elasticity
Regulating member 17 is hingedly connected between the second tensioner arm 16b and the second fixed structure, but is driven with tensioning shown in Fig. 6
Device 102 the difference is that, two flexible adjustment components 17 for being tensioned transmission device 103 are connected to the first tensioner arm simultaneously
The close mutual side of 16a and the second tensioner arm 16b be (the first tensioner arm 16a's and the second tensioner arm 16b i.e. shown in fig. 6
Lower section).
Certainly, the embodiment of the present invention is not limited the concrete form of the second fixed structure, and the second fixed structure can be with
It is 11 ontology of fixed pedestal, is also possible to the platform being connected on fixed pedestal 11 or plate, can also be tensioning transmission device
Other structures that can be played a supportive role other than 102.In addition, the second fixed structure can be can connect two elasticity simultaneously
The component of regulating member 17 also may include the component independent of each other for respectively corresponding the setting of two flexible adjustment components 17.
In addition, corresponding first tensioning wheel 14 and two flexible adjustment components 17 of the second tensioning wheel 15 setting can also use
Different set-up modes.According to reference orientation shown in Fig. 6, for example, one of flexible adjustment component 17 can be connected to
Separate second side tensioner arm 16b of one tensioner arm 16a, and another flexible adjustment component 17 is connected to the second tensioner arm
The close side side the first tensioner arm 16a of 16b.In addition, when only including a tensioning wheel in tension pulley transmission device 101,
Flexible adjustment component 17 then can be set between tensioning wheel and first fixed structure, and certain first fixed structure and second is fixed
The setting form of structure is identical, therefore is not repeated here.
Fig. 8 is the structural schematic diagram of the tensioning transmission device 104 of still further embodiment according to the present invention.As shown in figure 8,
In order to make it easy to understand, identical component uses identical label in the tensioning transmission device 101 of the present embodiment and above-described embodiment,
And the structure having been described above will not be described again.However, it is desirable to which explanation, only illustrates in fig. 8
It is tensioned the theory structure of transmission device 104, therefore, some components being tensioned in transmission device 104 have been not shown.In this implementation
Being tensioned transmission device 104 includes 11 (not shown) of fixed pedestal, the first rotary part 12, the first tensioning wheel 14, second
Bearing up pulley 15 and tensioning wheel holding member 16 and flexible adjustment component 17.
With the tensioning transmission device 101 in above-described embodiment the difference is that, be tensioned transmission device 104 in tensioning
Take turns the guiding groove 164 that holding member 16 includes arc.Specifically, guiding groove 164 is to be with the rotary shaft of the first rotary part 12
Above-mentioned desired trajectory is limited to as a result, by guiding groove 164 with the rotation of the first rotary part 12 by the arc chute at center
Arc track centered on shaft.And the first tensioning wheel 14 and the second tensioning wheel 15 are respectively slidably connected to guiding groove 164,
Be supported in the first tensioning wheel 14 and the second tensioning wheel 15 by flexible adjustment component 17 and the realization of 164 collective effect of guiding groove
60 two sides of traction element between first rotary part 12 and driving wheel 20, and the purpose swung along scheduled arc track.
It specifically, can be respectively by the in order to realize above-mentioned purpose jointly by flexible adjustment component 17 and guiding groove 164
One tensioning wheel 14 and the second tensioning wheel 15 are rotatably connected on sliding block, and then will be connected with the first tensioning wheel 14 and second
Two slidings of bearing up pulley 15 are slideably inserted in guiding groove 164, and flexible adjustment component 17 is hinged with two sliding blocks respectively
Connection.Certainly, the first tensioning wheel 14 and the second tensioning wheel 15 can also by other connection types respectively with flexible adjustment portion
Part 17 and guiding groove 164 connect, and the embodiment of the present invention is to this and is not limited, as long as can be realized the first tensioning wheel 14
The purpose swung with the second tensioning wheel 15 along arc track.Tensioning transmission device 104 and above-mentioned implementation in the present embodiment
The advantage having the same of tensioning transmission device 101 in example, so being not repeated here here.
In addition, tensioning transmission device 104 is eliminated needs and is set in tensioning wheel holding member 16 by setting guide rail
The first tensioner arm 16a and the second tensioner arm 16b are set, and needs rotationally to connect the first tensioner arm 16a and the second tensioner arm 16b
The complex operations on fixed pedestal 11 are connect, so the structure of tensioning transmission device 104 and assembly are simple.And it can be by drawing
The both ends of guideway are that the first tensioning wheel 14 and the second tensioning wheel 15 provide stroke limit effect, therefore can be avoided the first tensioning
Wheel 14 and 15 amplitude of fluctuation of the second tensioning wheel it is excessive and the problem of cannot effectively limit the cornerite of traction element 60, so as to
The service life of traction element 60 is further increased, while improving the use reliability of tensioning transmission device 104.
Moreover, during arcuately guide rail is slided for the first tensioning wheel 14 and the second tensioning wheel 15, arc guide rail
Itself can provide certain frictional force for the first tensioning wheel 14 and the second tensioning wheel 15, so can reduce the first tensioning wheel 14
With hunting frequency of second tensioning wheel 15 under 60 thrust of traction element, therefore the first tensioning wheel 14 can be further limited
With the vibration frequency of the second tensioning wheel 15, concentrate and to better solve 60 local pressure of traction element by alternating load shadow
The problem of ringing and being easy to appear fatigue damage.
In addition, the guiding groove 164 of above-mentioned arc can also be replaced for the tensioning transmission device 104 of the present embodiment
For other guide rails, with realized by other guide rails and the cooperation of flexible adjustment component 17 make the first tensioning wheel 14 and
The purpose that second tensioning wheel 15 is swung along scheduled arc track.In the present embodiment, illustratively, guide rail can also be
Desired trajectory can be equally limited to the rotation of the first rotary part 12 by the guide rail (not shown) of arc, the guide rail of arc
Arc track centered on shaft.Specifically, in order to the first tensioning wheel 14 and the second tensioning wheel 15 are slidably connected to lead
It is the sliding rail of swallow-tail form that rail, the first tensioning wheel 14 of direction of guide rail and the surface of the second tensioning wheel 15, which have cross sectional shape, and the
One tensioning wheel 14 and the second tensioning wheel 15 are connected separately with sliding block, and sliding block has the swallow-tail form sliding rail shape phase with guide rail
The sliding slot matched.It as a result, can be same by the first tensioning wheel 14 and the second tensioning wheel 15 by the clamping engagement between sliding block and guide rail
When be slidably attached on guide rail.And flexible adjustment component 17 equally respectively with the first tensioning wheel 14 and the second tensioning wheel 15
Sliding block articulated connection, to make the amplitude of fluctuation of limit the first tensioning wheel 14 and the second tensioning wheel 15.
In the tensioning transmission device 104 of the embodiment of the present invention, setting position for guiding groove 164 and guide rail and without
It limits, such as guiding groove 164 or guide rail can be arranged and are fixed on arbitrary fixed structure on plate body, and by the plate body,
As long as can be cooperated by guiding groove 164 or guide rail and flexible adjustment component 17, realization makes the first tensioning wheel 14 and the second tensioning
Wheel 15 swings along scheduled arc track and can compress the purpose of traction element 60 opposite to each other.
In addition, in above-mentioned each embodiment, the first rotary part 12, the first tensioning wheel 14 and second illustrate only
Bearing up pulley 15 is rotatably arranged in the mode in corresponding support construction by bearing, i.e., can be rotatably set respectively by bearing
On fixed pedestal 11 and tensioning wheel holding member 16, but the embodiment of the present invention is not limited to this.In other embodiments
In, in order to enable the first rotary part 12, the first tensioning wheel 14 and the second tensioning wheel 15 successfully to pass with traction element 60
It is dynamic, the first rotary part 12, the first tensioning wheel 14 and the second tensioning wheel 15 can also be fixed to corresponding support knot
On structure, and rotationally it is arranged in the first rotary part 12, the first tensioning wheel 14 and 15 periphery of the second tensioning wheel simultaneously similar
The component of hub form.
In addition, in other some embodiments, it can also be real by the other structures other than tensioning wheel holding member 16
The first tensioning wheel 14 and the second tensioning wheel 15 are now respectively retained leading between the first rotary part 12 and the second rotary part
Draw the outside of component 60, and compress traction element 60 opposite to each other simultaneously, and can in the thrust lower swing of traction element 60,
To this embodiment of the present invention and it is not limited.
In addition, according to an embodiment of the invention, additionally providing a kind of pitch-controlled system (overall structure is not shown in the figure).Variable pitch
System includes: driving motor, the tensioning transmission device in any of the above-described embodiment, the second rotary part and traction element 60,
The first rotary part 12 being wherein tensioned in transmission device is sequentially connected as driving wheel and driving motor, and the second rotary part
It connect with the blade (not shown) of wind power generating set and is rotated with movable vane piece.In pitch-controlled system, illustratively, in order to
It realizes accurate transmission, is tensioned the traction element 60 in transmission device as conveyer belt, such as toothed belt, and the first rotary part 12
For the belt wheel cooperated with toothed belt.It should be understood that when tensioning transmission device is applied in other field, then tractive unit
Part 60 can also be conveyer chain or traction steel wire, then the first rotary part 12 is and the sprocket wheel of conveyer chain cooperation transmission or other rotations
Rotation member.Since pitch-controlled system has the tensioning transmission device in above-described embodiment, so having identical as tensioning transmission device
The advantages of, it therefore, can be improved the use reliability of pitch-controlled system, avoid the drive mechanism in pitch-controlled system from going wrong, shadow
Ring the normal work of entire wind power generating set.
In addition, by reading above embodiments, it is possible to understand that ground, tensioning transmission device as mentioned in the embodiments of the present invention,
It can also be applied in other fields, be connected to the purpose for realizing power transmission between driving mechanism and executing agency.
In addition, when the tensioning transmission device in above-described embodiment to be applied in the pitch-controlled system of wind-driven generator, on
The first fixed structure and the second fixed structure stated then are construed as the wheel hub of wind power generating set or are arranged in wheel hub
On other fixed structures.
In general, the blade of wind power generating set is rotatably connected at wheel hub 40, pitch variable bearings 30 by pitch variable bearings 30
Including outer ring 31 and inner ring 32, in one exemplary embodiment, outer ring 31 is connect with blade, and inner ring 32 is connect with wheel hub,
Therefore the first rotary part 12 can be driven by traction element 60 and the cooperation of outer ring 31, to realize the mesh of driving blade variable pitch
's.
Fig. 9 is one of the second rotary part and the cooperation of traction element 60 in pitch-controlled system according to an embodiment of the present invention
The schematic diagram of the section structure of specific example；Figure 10 is the second rotary part in pitch-controlled system according to an embodiment of the present invention and lead
Draw the schematic diagram of the section structure of another specific example of the cooperation of component 60；Figure 11 is pitch-controlled system according to an embodiment of the present invention
In the second rotary part and traction element 60 cooperate another specific example the schematic diagram of the section structure.It needs to illustrate
It is that the structure of the mating part of traction element 60 and the second rotary part is merely illustrated into Figure 11 in Fig. 9.
Fig. 9 is referred to, in an alternative embodiment, the second rotary part in pitch-controlled system is pitch variable bearings 30
Inner ring 32.Specifically, when being inner ring 32 with the second rotary part of the cooperation transmission of traction element 60, then pitch variable bearings 30 is outer
Circle 31 is fixedly connected with wheel hub 40, and inner ring 32 is then fixedly connected with root of blade 50.Since tensioning transmission device (does not show in figure
It is located at blade outboard out), so inner ring 32 needs to prolong by being arranged along the axially projecting ring-type in outer ring 31 of pitch variable bearings 30
Extending portion 321 is arranged gear teeth 322 by the outer peripheral surface in circular extent 321 and engages cooperation with traction element 60.It is as a result,
It can be cooperated by traction element 60 and the transmission of inner ring 32, realize the purpose of driving blade variable pitch.
Realize that driving blade executes variable pitch movement by such transmission fit system, compared to traction element 60 and pitch axis
The transmission cooperation driving blade of outer ring 31 for holding 30 carries out the mode of variable pitch, then can be in the case where guaranteeing the identical situation of blade specification
Increase the size of inner ring 32, therefore the pitch diameter and bolt for the bolt being connected between pitch variable bearings 30 and blade can be increased
Quantity, and surround the area of the traction element 60 in 32 periphery of inner ring increases with it, therefore can be improved root of blade 50
Load resistant power, while load suffered by single bolt is reduced, so that load suffered by pitch variable bearings 30 is reduced, it can be into one
Step increases the use reliability of pitch-controlled system.
Referring to Figure 10, in another alternative embodiment, the second rotary part in pitch-controlled system is and blade root
The transition connection section 51 for the annular that portion 50 connects.Specifically, when the second rotary part with the cooperation transmission of traction element 60 was
When crossing linkage section 51, then the outer ring 31 of pitch variable bearings 30 is fixedly connected with wheel hub 40, and inner ring 32 then passes through transition connection section 51
It is fixedly connected with root of blade 50.Illustratively, traction element 60 is toothed belt, and transition connection section 51 and blade are integral type
Structure, that is to say, that gear teeth 501 can be directly set in the outer peripheral surface of the root of blade, to pass through gear teeth 501 and traction
The engagement cooperation of component 60 can be driven by traction element 60 and blade cooperation as a result, realize the purpose of driving blade variable pitch.
Realize that driving blade executes variable pitch movement by such transmission fit system, the variable pitch that can be improved blade is accurate
Degree, and gear teeth 501 can be processed while blade is produced, it eliminates and gear teeth is set on pitch variable bearings 30
Complicated processing process, reduces the difficulty of processing of pitch-controlled system, while also reducing the cost of pitch-controlled system.
Referring to Figure 11, in another optional embodiment, the second rotary part in pitch-controlled system is similarly and leaf
Piece root 50 connect annular transition connection section 51, but with applicable cases shown in Fig. 10 the difference is that, this implementation
Transition connection section 51 and blade in example are separate structure.Similarly, the outer ring 31 of pitch variable bearings 30 is fixedly connected with wheel hub 40,
And inner ring 32 is then fixedly connected by transition connection section 51 with root of blade 50.Illustratively, traction element 13 is toothed belt.It crosses
The outer surface for crossing linkage section 51 connects the supporting surface 512 of annular, the outer peripheral surface setting of supporting surface 512 by circular connector 511
There is gear teeth 513, to engage cooperation with traction element 60 by gear teeth 513, traction element 60 and blade can be passed through as a result,
Cooperation transmission, realizes the purpose of driving blade variable pitch.
It realizes that driving blade executes variable pitch movement by such transmission fit system, traction element 60 can be increased in blade
The surround the area of 50 periphery of root, therefore can be improved the load resistant power of root of blade 50., and can be by transition connection section 51
It is made as standard component, is produced in batches, therefore can be improved the production efficiency of pitch-controlled system, and reduces its cost of manufacture.
In addition, according to another embodiment of the invention, a kind of wind power generating set (not shown) is additionally provided,
Pitch-controlled system including above-described embodiment, therefore have the advantages that identical as pitch-controlled system, therefore it is not repeated here.
The present invention can realize in other specific forms, without departing from its spirit and essential characteristics.Therefore, current reality
Apply example be all counted as being exemplary rather than in all respects it is limited, the scope of the present invention by appended claims rather than on
Description definition is stated, also, falls into the meaning of claim and whole changes in the range of equivalent to all be included in this
Among the range of invention.Also, the different technologies feature occurred in different embodiments can be combined, to obtain beneficial to effect
Fruit.Those skilled in the art will be understood that and realize revealed on the basis of studying attached drawing, specification and claims
The embodiment of other variations of embodiment.
Claims (22)
1. a kind of tensioning transmission device (100,101,102,103,104), the tensioning transmission device (100,101,102,103,
104) it is driven by traction element (60) and the cooperation of the second rotary part, which is characterized in that the tensioning transmission device (100,
101,102,103,104) include:
Fixed pedestal (11)；
First rotary part (12) is pivotally connected to the fixed pedestal (11)；
Tensioning wheel, the traction element (60) between first rotary part (12) and second rotary part
Outside, and the tensioning wheel can be swung under the thrust of the traction element (60) along desired trajectory；And
Flexible adjustment component (17) can cooperate with the tensioning wheel, make the tensioning wheel by the outside of the traction element (60)
To traction element (60) described in the traction element (60) interior side compression, and make the amplitude of fluctuation for limiting the tensioning wheel.
2. tensioning transmission device (100,101,102,103,104) according to claim 1, which is characterized in that described solid
Determining pedestal (11) includes:
Fixed part (111), is fixed on external support structure by connector；With
Extension (112) is projectedly arranged on the fixed part (111), and has and receive first rotary part
(12) the first accommodating space.
3. tensioning transmission device (100,101,102,103,104) according to claim 1, which is characterized in that further include
Tensioning wheel holding member (16), the tensioning wheel holding member (16) connect the tensioning wheel and are limited to the desired trajectory
Arc track.
4. tensioning transmission device (100,101,102,103,104) according to claim 3, which is characterized in that described
Bearing up pulley holding member (16) is connected to the fixed pedestal (11).
5. tensioning transmission device (100,101,102,103,104) according to claim 3, which is characterized in that described
Bearing up pulley holding member (16) includes:
Coupling part (161) is rotatably connected at the fixed pedestal (11)；With
Support section (162) is connect with the coupling part (161) and the tensioning wheel, and in the coupling part (161)
Drive under surround first rotary part (12) rotary shaft rotation, the desired trajectory is limited to described first
Arc track centered on the rotary shaft of rotary part (12).
6. tensioning transmission device (100,101,102,103,104) according to claim 5, which is characterized in that the branch
Support part point (162) includes the second accommodating space (162c) being connected to first rotary part (12), the tensioning wheel bearing
In second accommodating space (162c), to pass through second accommodating space (162c) in first rotary part (12)
What formation can be passed around for the traction element (60) between the tensioning wheel passes around space.
7. tensioning transmission device (100,101,102,103,104) according to claim 3, which is characterized in that described
Bearing up pulley holding member (16) includes arc guide rail, and the desired trajectory is limited to described by the arc guide rail
Arc track centered on the rotary shaft of one rotary part (12), the tensioning wheel are slidably connected to the arc guide rail
Road.
8. tensioning transmission device (100,101,102,103,104) according to claim 3, which is characterized in that further include
Limiting component (18), the limiting component (18) and the tensioning wheel holding member (16) cooperate, and limit the tensioning wheel to make
Full swing amplitude.
9. tensioning transmission device (100,101,102,103,104) according to any one of claims 1 to 8, feature exists
In, including a tensioning wheel.
10. tensioning transmission device (100,101,102,103,104) according to claim 9, which is characterized in that the bullet
Property regulating member (17) is connected between the tensioning wheel and first fixed structure.
11. tensioning transmission device (100,101,102,103,104) according to any one of claims 1 to 8, feature exists
In including two tensioning wheels, two tensioning wheels are located at first rotary part (12) and second rotation
Between rotation member, two tensioning wheels can be made from the outer of the traction element (60) by the flexible adjustment component (17)
Side compresses the traction element (60) opposite to each other simultaneously and swings along the desired trajectory towards same direction.
12. tensioning transmission device (100,101,102,103,104) according to claim 11, which is characterized in that described
Flexible adjustment component (17) is hingedly connected in two tensioning wheels；Alternatively, the flexible adjustment component (17) is cut with scissors respectively
It is connected between two tensioning wheels and corresponding second fixed structure.
13. tensioning transmission device (100,101,102,103,104) according to claim 1, which is characterized in that the bullet
Property regulating member (17) includes elastic damper or spring.
14. a kind of pitch-controlled system, for driving the blade of wind power generating set to carry out variable pitch, the blade passes through pitch variable bearings
(30) it is rotatably connected to the wheel hub of the wind power generating set, which is characterized in that the pitch-controlled system includes:
Driving motor；
Tensioning transmission device (100,101,102,103,104) as described in any one of claims 1 to 13, wherein described
First rotary part (12) is connect with the driving motor；
Second rotary part, second rotary part are connect with the root of blade (50)；And
Traction element (60), the traction element (60) surround first rotary part (12) and second rotary part,
And it is driven respectively with first rotary part (12) and second rotary part cooperation.
15. pitch-controlled system (1) according to claim 14, which is characterized in that the fixed pedestal (11) is connected to described
Wheel hub (40).
16. pitch-controlled system (1) according to claim 14, which is characterized in that the traction element (60) is toothed belt.
17. pitch-controlled system described in any one of 4 to 16 according to claim 1, which is characterized in that second rotary part is
The outer ring (31) for the pitch variable bearings (30) being connect with the root of blade (50), the traction element (60) and the outer ring
(31) cooperation rotation.
18. pitch-controlled system described in any one of 4 to 16 according to claim 1, which is characterized in that second rotary part is
The inner ring (32) for the pitch variable bearings (30) connecting with the root of blade (50), the inner ring (32) includes along the variable pitch
The circular extent (321) of the axially projecting outer ring (31) in the pitch variable bearings (30) of bearing (30), the traction element
(60) it is rotated by the circular extent (321) and the inner ring (32) cooperation.
19. pitch-controlled system described in any one of 4 to 16 according to claim 1, which is characterized in that second rotary part is
The transition connection section (51) for the annular connecting with the root of blade (50), the traction element (60) are connected by the transition
Section (51) and blade cooperation rotate.
20. pitch-controlled system according to claim 19, which is characterized in that the transition connection section (51) is with the blade
Integral structure.
21. pitch-controlled system according to claim 19, which is characterized in that the periphery of the transition connection section (51) is radially
It is projectedly provided with the supporting surface (512) of annular, the traction element (60) is matched by the supporting surface (512) with the blade
Close rotation.
22. a kind of wind power generating set, which is characterized in that including the variable pitch system as described in any one of claim 14 to 21
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889667.5A CN109555645B (en) | 2017-09-27 | 2017-09-27 | Tensioning transmission device, variable pitch system and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710889667.5A CN109555645B (en) | 2017-09-27 | 2017-09-27 | Tensioning transmission device, variable pitch system and wind generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109555645A true CN109555645A (en) | 2019-04-02 |
| CN109555645B CN109555645B (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710889667.5A Active CN109555645B (en) | 2017-09-27 | 2017-09-27 | Tensioning transmission device, variable pitch system and wind generating set |
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| Country | Link |
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| CN (1) | CN109555645B (en) |
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| WO2013159181A1 (en) * | 2012-04-28 | 2013-10-31 | Litens Automotive Partnership | Adjustable tensioner |
| CN205841006U (en) * | 2016-06-28 | 2016-12-28 | 上汽通用汽车有限公司 | Belt start and stop train |
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|---|---|---|---|---|
| US20050181901A1 (en) * | 2004-02-13 | 2005-08-18 | Chang-Hyun Shin | Double action belt tensioner |
| CN102022495A (en) * | 2009-09-18 | 2011-04-20 | 通用汽车环球科技运作公司 | Drive belt tensioner for motor generator unit |
| CN202370752U (en) * | 2011-12-13 | 2012-08-08 | 北京金风科创风电设备有限公司 | Pitch control device for wind generating set and wind generating set |
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| WO2013159181A1 (en) * | 2012-04-28 | 2013-10-31 | Litens Automotive Partnership | Adjustable tensioner |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109555645B (en) | 2021-01-22 |
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