CN105422766A - Toothed belt tensioning device and fan variable pitch device - Google Patents
Toothed belt tensioning device and fan variable pitch device Download PDFInfo
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- CN105422766A CN105422766A CN201510907650.9A CN201510907650A CN105422766A CN 105422766 A CN105422766 A CN 105422766A CN 201510907650 A CN201510907650 A CN 201510907650A CN 105422766 A CN105422766 A CN 105422766A
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- toothed belt
- tooth plate
- adjusting element
- tensioning
- tension device
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- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 15
- 230000001276 controlling effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000004606 Fillers/Extenders Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/402—Transmission of power through friction drives
- F05B2260/4021—Transmission of power through friction drives through belt drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0812—Fluid pressure
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0842—Mounting or support of tensioner
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
-
- 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
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0891—Linear path
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention provides a toothed belt tensioning device and a fan variable pitch device. The toothed belt tensioner comprises: the toothed plate assembly is fixedly connected with the toothed belt; the toothed plate assembly is arranged on the toothed plate seat; the tensioning adjusting piece is movably arranged on the toothed plate seat and is fixedly connected with the toothed plate assembly; and the bolt stretcher is fixedly connected with the tensioning adjusting piece and can drive the tensioning adjusting piece to move. By adopting the technical scheme of the invention, the initial pre-tightening force of the toothed belt can be rapidly and accurately controlled, and the accurate control of the pre-tightening force of the toothed belt is realized in the process of pitch variation action, so that the pitch variation efficiency is improved.
Description
Technical field
The present invention relates to field of wind power equipment, particularly relate to a kind of toothed belt tension device and blower variable-pitch device.
Background technique
Toothed belt becomes the one important change oar technology that oar is Large-scale Wind Turbines, mainly adjusts blade pitch angle at any time according to the change of wind speed, controls the absorption of impeller to wind energy.Because the working environment of wind-driven generator is comparatively complicated, and change oar acts frequently, therefore the pretightening force that wind-driven generator pitching device will make toothed belt keep certain, the transmission performance of toothed belt could be kept, and then ensure that wind-driven generator has higher change oar efficiency.
Toothed belt belongs to Timing Belt, the relation curve of its first pretightening force (first pretightening force) and cycle-index when reaching working life is as Fig. 1 (toothed belt pitch 8mm in Fig. 1, wide 20mm, belt wheel 32 tooth, load torque Tq=60Nm) shown in, as can be seen from the figure, first pretightening force too high or too low working life that all can affect Timing Belt.This illustrates that accurately controlling just pretightening force can improve the life-span of toothed belt, and then extends the maintenance period of toothed belt, improves the change oar efficiency of wind-driven generator simultaneously.
The first pretightening force controlling toothed belt is the technological difficulties that wind-driven generator pitching controls always, and existing toothed belt tensioning device structure design is unreasonable, regulates inconvenience to the first pretightening force of toothed belt, and it exists following a few problem:
1, adopt the instrument such as hydraulic spanner, torque wrench to carry out pretension to toothed belt tension device, adjust the first pretightening force of toothed belt.Because toothed belt tension device itself and itself and toothed belt exist frictional force, make the pretightening force regulation range of toothed belt limited, even toothed belt tension device is twisted bad, and toothed belt does not reach the pretightening force of requirement yet.
2, to the first pretensioning operation of toothed belt, needing after wind-driven generator becomes oar repeatedly, by repeatedly regulating toothed belt tension device to realize, wasting time and energy.
3, existing toothed belt tension device, cannot regulate the pretightening force of toothed belt, cause the inefficiency of the first pretightening force of adjustment when wind-driven generator carries out becoming oar action.
Summary of the invention
Embodiments of the invention provide a kind of toothed belt tension device and blower variable-pitch device, to solve the problem of toothed belt just pretightening force adjustment inconvenience.
For achieving the above object, embodiments of the invention provide a kind of toothed belt tension device, comprising: tooth plate assembly, and tooth plate assembly is fixedly connected with toothed belt; Tooth plate seat, tooth plate assembly is arranged on tooth plate seat; Tensioning adjusting element, tensioning adjusting element is arranged on tooth plate seat movably, and is fixedly connected with tooth plate assembly; Bolt tensioning jack, bolt tensioning jack is fixedly connected with tensioning adjusting element, and tensioning adjusting element can be driven to move.
Further, tooth plate seat comprises: panel seat main body, and tooth plate assembly is arranged in panel seat main body; Projection, projection is positioned at the side of panel seat main body, and projection is provided with installation through hole, and tensioning adjusting element is arranged on to be installed in through hole, and bolt tensioning jack is connected on tensioning adjusting element, and is arranged on the protruding side away from tooth plate assembly.
Further, tooth plate assembly comprises: castellated plates, and castellated plates is arranged on tooth plate seat, and tensioning adjusting element is connected in castellated plates; Pressure strip, pressure strip to be pressed in castellated plates and to be fastenedly connected with castellated plates, and toothed belt is arranged between castellated plates and pressure strip.
Further, tensioning adjusting element is also provided with adjusting nut.
Further, bolt tensioning jack comprises: piston cylinder; Piston, piston is arranged in piston cylinder, and and between piston cylinder, there is oil pocket; Stretching nut, stretching nut is fixedly connected with piston, and moves with stretching nut, and tensioning adjusting element is connected with stretching nut thread.
Further, bolt tensioning jack also comprises spring, and spring to be arranged in piston cylinder and to be connected between the inwall of piston cylinder and piston, and the telescopic direction of spring is consistent with the movement direction of piston.
According to a further aspect in the invention, a kind of blower variable-pitch device is also provided, comprises: pitch variable bearings; Actuation gear, actuation gear is arranged on fixture rotationally; Idle wheel, Idle wheel is arranged on fixture rotationally; Toothed belt, toothed belt walks around actuation gear and Idle wheel, and at least one end of toothed belt is fixed on the outer ring of pitch variable bearings by toothed belt tension device, and toothed belt tension device is the toothed belt tension device in above-described embodiment.
Further, the two ends of toothed belt are all fixed on the outer ring of pitch variable bearings by toothed belt tension device.
Further, actuation gear engages with toothed belt, and drives profile of tooth Tape movement.
The toothed belt tension device of embodiments of the invention, blower fan group vane change device, the first pretightening force of the mode matched with tensioning adjusting element by bolt tensioning jack to toothed belt is regulated, suitable first pretightening force can be provided for toothed belt, and improve the efficiency to toothed belt just pretightening force adjustment.
Accompanying drawing explanation
Fig. 1 is the first pretightening force of toothed belt and the relation curve of cycle-index when reaching working life;
Fig. 2 is the plan view of the toothed belt tension device of the not strap bolt extender of embodiments of the invention;
Fig. 3 is the sectional view of the toothed belt tension device of the not strap bolt extender of embodiments of the invention;
Fig. 4 is the sectional view of the bolt tensioning jack of the toothed belt tension device of embodiments of the invention;
Fig. 5 is the structural representation of the original state of the blower variable-pitch device of embodiments of the invention;
Fig. 6 is the structural representation that the blower variable-pitch device of embodiments of the invention turns an angle.
Description of reference numerals:
10, tooth plate seat; 11, protruding; 12, panel seat main body; 20, tooth plate assembly; 21, pressure strip; 22, castellated plates; 30, tensioning adjusting element; 31, adjusting nut; 41, piston cylinder; 42, piston; 43, stretching nut; 44, spring; 45, locking nut; 46, hydraulic fluid port; 50, pitch variable bearings; 60, actuation gear; 61, Idle wheel; 80, wheel hub; 90, toothed belt.
Embodiment
Below in conjunction with accompanying drawing, the toothed belt tension device of the embodiment of the present invention and blower variable-pitch device are described in detail.
As shown in Figures 2 to 4, according to embodiments of the invention, toothed belt tension device comprises tooth plate assembly 20, tooth plate seat 10, tensioning adjusting element 30 and bolt tensioning jack.Wherein, tooth plate assembly 20 is fixedly connected with toothed belt 90, and it is arranged on tooth plate seat 10, and can move relative to tooth plate seat 10, moves and then tensioning toothed belt 90 to drive toothed belt 90.Tensioning adjusting element 30 is arranged on tooth plate seat 10 movably, and is fixedly connected with tooth plate assembly 20, regulates tensioning adjusting element 30 that tooth plate assembly 20 can be made to move relative to tooth plate seat 10, and then regulates the first pretightening force on toothed belt 90.Bolt tensioning jack is fixedly connected with tensioning adjusting element 30, and it can drive tensioning adjusting element 30 to move, and then regulates the position of tensioning adjusting element 30 on tooth plate seat 10.When the pretightening force on toothed belt 90 changes, it acts on the active force change on tensioning adjusting element 30, pretightening force on tensioning adjusting element 30 is changed, because the oil pressure of bolt tensioning jack is fixed, therefore it can regulate tensioning adjusting element 30 to make its pretightening force return back to reset condition, and then makes toothed belt 90 reach pretension requirement.
Particularly, tooth plate assembly 20 is being installed on tooth plate seat 10 by tensioning adjusting element 30, and after one end of toothed belt 90 is fixedly connected on tooth plate assembly 20, bolt tensioning jack is mounted on tensioning adjusting element 30, so just tensioning adjusting element 30 can be driven to move relative to tooth plate seat 10 by bolt tensioning jack, make tensioning adjusting element 30 that moving tooth plate assembly 20 can be with to move on tooth plate seat 10, and then drive the one end of the toothed belt 90 be connected with tooth plate assembly 20 to move, realize the tensioning of toothed belt 90.
Bolt tensioning jack is used to regulate tensioning adjusting element 30, carry out adjustment tool compared to existing use torque spanner to tensioning adjusting element 30 to have the following advantages: bolt tensioning jack is swift in response, it uses simple tension to regulate tensioning adjusting element 30, without torsional shear and lateral force, frictionally damage can not be caused to the surface of contact of attachment portion, accurately can control the amount of movement of tensioning adjusting element 30, and then make the pretightening force of toothed belt 90 can obtain accurately controlling rapidly.
As shown in Figures 2 and 3, in the present embodiment, tooth plate seat 10 comprises panel seat main body 12 and is arranged on the projection 11 of side of panel seat main body 12.This projection 11 can be one-body molded with panel seat main body 12, also can both respectively processing after be fixedly connected with by modes such as welding, riveted joints again.
Panel seat main body 12 is for placing tooth plate assembly 20.Be provided with installation through hole on protruding 11, tensioning adjusting element 30 is located in this installation through hole, and one end of tensioning adjusting element 30 is connected with tooth plate assembly 20, and the other end is connected with bolt tensioning jack.Bolt tensioning jack is arranged on the side away from tooth plate assembly 20 of protruding 11.
In the present embodiment, tensioning adjusting element 30 is screw rod.In other embodiments, tensioning adjusting element 30 can also be the structure of other sections of being threaded, as long as it can be fixedly connected with tooth plate assembly 20, and is connected with bolt tensioning jack.
Preferably, tensioning adjusting element 30 is provided with adjusting nut 31, it is threaded with tensioning adjusting element 30, can be regulated the position of tensioning adjusting element 30 by rotating adjusting nut 31, makes it be with moving tooth plate assembly 20 to move.When toothed belt 90 needs to regulate its tensioning degree in a big way, the tensioning state that toothed belt 90 will reach cannot be realized by bolt tensioning jack, such as when toothed belt 90 is connected on tooth plate assembly 20, need the first tensioning state that toothed belt 90 reaches predetermined, the mode of tensioning adjusting element 30 can be regulated realize by adjusting nut 31.
Tooth plate assembly 20 comprises castellated plates 22 and pressure strip 21, and both are fixedly connected with and realize being connected with the reliable of toothed belt 90.Castellated plates 22 is arranged on tooth plate seat 10 movably, and tensioning adjusting element 30 is connected in castellated plates 22.Pressure strip 21 to be pressed in castellated plates 22 and to be fastenedly connected with castellated plates 22, and toothed belt 90 is arranged between castellated plates 22 and pressure strip 21.This castellated plates 22 is provided with the teeth groove that shape matches with the profile of tooth of toothed belt 90, that can fit to make itself and toothed belt 90 is tighter, ensures that pressure strip 21 and castellated plates 22 coordinate and toothed belt 90 can be clamped.
The mode that pressure strip 21 matches with castellated plates 22, firmly can couple together toothed belt 90 and tooth plate assembly 20.Certainly, in order to make pressure strip 21 toothed belt 90 can be compressed, by devices such as screws, pressure strip 21 and castellated plates 22 can be tightened up.
As shown in Figure 4, in the present embodiment, bolt tensioning jack comprises piston cylinder 41, piston 42 and stretching nut 43.Wherein, piston 42 is arranged in piston cylinder 41, and and between piston cylinder 41, there is oil pocket, can stuffing pressure medium in oil pocket.Stretching nut 43 is fixedly connected with piston 42, and moves with piston 42, and tensioning adjusting element 30 is threaded with stretching nut 43, realizes the adjustment to tensioning adjusting element 30 thus, to realize the tensioning to toothed belt 90.
Piston cylinder 41 is connected with hydraulic fluid port 46, this hydraulic fluid port 46 is communicated with oil pocket.Can pass into pressure medium to oil pocket from hydraulic fluid port 46, the hydraulic pressure effect of the pressure medium passed on the piston 42.When becoming the change of the pretightening force in oar process on toothed belt 90, it acts on the power change on tensioning adjusting element 30, pretightening force on tensioning adjusting element 30 is changed, the power causing tensioning adjusting element 30 to act on the piston 42 changes, because the hydraulic pressure in oil pocket is fixed, therefore piston 42 can produce movement, the stretching nut 43 be connected with piston 42 can move thereupon, and then it is mobile to drive tensioning adjusting element 30 to produce, realize the tensioning to toothed belt 90, and make the pretightening force on tensioning adjusting element 30 reply original state.
More preferably, bolt tensioning jack also comprises spring 44, and it to be arranged in piston cylinder 41 and to be connected between the inwall of piston cylinder 41 and piston 42, and the telescopic direction of spring 44 is consistent with the movement direction of piston 42.Spring 44 contributes to piston 42 return, contributes to the pressure medium in emptying oil pocket, guarantees in oil pocket clean when bolt tensioning jack does not use.
Alternatively, this bolt tensioning jack also comprises locking nut 45, and it is for locking tensioning adjusting element 30, when not needing to regulate the pretightening force on toothed belt 90, can lock tensioning adjusting element 30 by locking nut 45.
According to a further aspect in the invention, the invention provides a kind of blower variable-pitch device, aforesaid toothed belt tension device is applied in the first pretension step of the toothed belt 90 of the vane change device of wind-driven generator by this blower variable-pitch device.
As shown in Figure 5, this blower variable-pitch device comprises pitch variable bearings 50, actuation gear 60, Idle wheel 61, toothed belt 90 and toothed belt tension device.Wherein, actuation gear 60 and Idle wheel 61 are arranged on fixture by rotating shaft that (this fixture can be the wheel hub 80 of wind power generating set, this wheel hub 80 is fixedly connected with the inner ring of pitch variable bearings 50), and can rotate around the axis, toothed belt 90 walks around actuation gear 60 and Idle wheel 61, and at least one end of toothed belt 90 is fixed on the outer ring of pitch variable bearings 50 by toothed belt tension device.
Particularly, actuation gear 60 can engage with toothed belt 90, and drives toothed belt 90 to move.Idle wheel 61 and actuation gear 60 are arranged on the both sides of toothed belt 90, can coordinate carry out tensioning effectively to toothed belt 90 to make Idle wheel 61 with toothed belt tension device.Time on outer ring toothed belt 90 being fixed on pitch variable bearings 50, auxiliary device (such as, the outer ring of pitch variable bearings 50 arranging fixed base) can be passed through the toothed belt vane change device be connected with toothed belt 90 is fixed on the outer ring of pitch variable bearings 50.
When carrying out just tensioning to toothed belt 90, adjusting nut 31 can be first regulated to make toothed belt 90 have certain pretightening force, then construction bolt extender on tensioning adjusting element 30, drive actuation gear 60 to rotate, make it drive toothed belt 90 to rotate, and then the outer ring of pitch variable bearings 50 is rotated together along with toothed belt 90, pretightening force in rotation process on toothed belt 90 changes, this change absorbs by bolt tensioning jack, makes toothed belt 90 tensioning, completes the first tensioning to toothed belt 90.In this course, bolt tensioning jack realizes auto-tensioning, and without the need to manual tune, automaticity is good, and only once need become the first tensioning that oar just can realize toothed belt 90, quickness and high efficiency more.
As shown in Figure 5 to Figure 6, toothed belt 90 is carried out in the process of just tensioning, the specific works process of bolt tensioning jack and principle as follows:
Part toothed belt between the first end of toothed belt 90 and actuation gear 60 is first portion's toothed belt; Part toothed belt between second end of toothed belt 90 and actuation gear 60 is second portion toothed belt.
Being made by adjusting nut 31 after toothed belt 90 has certain pretightening force, bolt tensioning jack to be mounted on tensioning adjusting element 30.Actuation gear 60 rotates, toothed belt 90 is moved, now, one in first portion's toothed belt and second portion toothed belt can reduce with the cornerite of pitch variable bearings 50, the partial frictional power of this part toothed belt and pitch variable bearings 50 can be converted into the pretightening force of toothed belt 90 and the pretightening force on this part toothed belt is increased, and causes toothed belt 90 to extend certain length (toothed belt 90 exists certain specific elongation).Along with the extension of toothed belt 90, the pretightening force of toothed belt 90 can decline again, and its power acted on tensioning adjusting element 30 declines.Because the hydraulic pressure of bolt tensioning jack is fixed, therefore, stretching nut 43 and piston 42 can move (elongation that its amount of movement is toothed belt 90), and pull tensioning adjusting element 30, and then drive toothed belt 90 to move, toothed belt 90 is tensioned, after tensioning completes, tooth plate assembly 20 and tooth plate seat 10 is bolted, makes toothed belt 90 keep its pretightening force.As long as make pitch variable bearings 50 complete once become oar, just tensioning can be completed by bolt tensioning jack to toothed belt 90.The first pretightening force on toothed belt 90 can be controlled by the hydraulic pressure controlling bolt tensioning jack.
In order to ensure toothed belt 90 two ends uniform force, can all connect above-mentioned toothed belt tension device at the two ends of toothed belt 90.
In the present embodiment, controlled the pretightening force of toothed belt 90, effectively can improve the adjustment efficiency of toothed belt 90 pretightening force by bolt tensioning jack, relative to the pretightening force using torque spanner to regulate toothed belt 90, it regulates efficiency can improve 2 ~ 3 times.And, by the control to bolt tensioning jack, toothed belt 90 can be controlled there is rational pretightening force, increase the life-span of toothed belt 90 and extend its maintenance period.
In the process that the action of change oar is carried out, by controlling the hydraulic pressure of the pressure medium in the oil pocket of bolt tensioning jack, accurately can control in real time the pretightening force of toothed belt 90, avoid the problem that the pretightening force of toothed belt 90 becomes the toothed belt lost of life that is large or that diminish caused, toothed belt cannot work, cannot become oar, thus improve change oar reliability.
It may be noted that the needs according to implementing, all parts described can be split as more multi-part in the application, also can by the parts of the incorporating aspects Cheng Xin of two or more parts or parts, to realize object of the present invention.
The toothed belt tension device of embodiments of the invention has following effect:
The mode utilizing bolt tensioning jack to match with tensioning adjusting element, to regulate the pretightening force of toothed belt, accurately can control rapidly the pretightening force of toothed belt;
By the control to bolt tensioning jack, achieve the first pretightening force of toothed belt and the accurate control of the pretightening force of toothed belt in the process becoming oar action, effectively improve and become oar efficiency;
Control toothed belt and be subject to rational pretightening force, the life-span of toothed belt can be increased and reduce its maintenance period, and then reducing the user cost of toothed belt.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. a toothed belt tension device, is characterized in that, comprising:
Tooth plate assembly (20), described tooth plate assembly (20) is fixedly connected with toothed belt (90);
Tooth plate seat (10), described tooth plate assembly (20) is arranged on described tooth plate seat (10);
Tensioning adjusting element (30), described tensioning adjusting element (30) is arranged on described tooth plate seat (10) movably, and is fixedly connected with described tooth plate assembly (20);
Bolt tensioning jack, described bolt tensioning jack is fixedly connected with described tensioning adjusting element (30), and described tensioning adjusting element (30) can be driven mobile.
2. toothed belt tension device according to claim 1, is characterized in that, described tooth plate seat (10) comprising:
Panel seat main body (12), described tooth plate assembly (20) is arranged on described panel seat main body (12);
Protruding (11), described projection (11) is positioned at the side of described panel seat main body (12), and described projection (11) is provided with installation through hole, described tensioning adjusting element (30) is arranged in described installation through hole, described bolt tensioning jack is connected on described tensioning adjusting element (30), and is arranged on the side away from described tooth plate assembly (20) of described projection (11).
3. toothed belt tension device according to claim 1 and 2, is characterized in that, described tooth plate assembly (20) comprising:
Castellated plates (22), described castellated plates (22) is arranged on described tooth plate seat (10), and described tensioning adjusting element (30) is connected in described castellated plates (22);
Pressure strip (21), described pressure strip (21) is pressed on described castellated plates (22) and goes up and be fastenedly connected with described castellated plates (22), and described toothed belt (90) is arranged between described castellated plates (22) and described pressure strip (21).
4. toothed belt tension device according to claim 2, is characterized in that, described tensioning adjusting element (30) is also provided with adjusting nut (31).
5. toothed belt tension device according to claim 1, is characterized in that, described bolt tensioning jack comprises:
Piston cylinder (41);
Piston (42), described piston (42) is arranged in described piston cylinder (41), and and between described piston cylinder (41), there is oil pocket;
Stretching nut (43), described stretching nut (43) is fixedly connected with described piston (42), and mobile with described piston (42), described tensioning adjusting element (30) is threaded with described stretching nut (43).
6. toothed belt tension device according to claim 5, it is characterized in that, described bolt tensioning jack also comprises spring (44), described spring (44) to be arranged in described piston cylinder (41) and to be connected between the inwall of described piston cylinder (41) and described piston (42), and the telescopic direction of described spring (44) is consistent with the movement direction of described piston (42).
7. a blower variable-pitch device, is characterized in that, comprising:
Pitch variable bearings (50);
Actuation gear (60), described actuation gear (60) is arranged on fixture rotationally;
Idle wheel (61), described Idle wheel (61) is arranged on described fixture rotationally;
Toothed belt (90), described toothed belt (90) walks around described actuation gear (60) and described Idle wheel (61), and at least one end of described toothed belt (90) is fixed on by toothed belt tension device on the outer ring of described pitch variable bearings (50), the toothed belt tension device of described toothed belt tension device according to any one of claim 1 to 6.
8. blower variable-pitch device according to claim 7, is characterized in that, the two ends of described toothed belt (90) are all fixed on the outer ring of described pitch variable bearings (50) by described toothed belt tension device.
9. blower variable-pitch device according to claim 7, is characterized in that, described actuation gear (60) engages with described toothed belt (90), and drives described toothed belt (90) mobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907650.9A CN105422766A (en) | 2015-12-09 | 2015-12-09 | Toothed belt tensioning device and fan variable pitch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907650.9A CN105422766A (en) | 2015-12-09 | 2015-12-09 | Toothed belt tensioning device and fan variable pitch device |
Publications (1)
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| CN201510907650.9A Pending CN105422766A (en) | 2015-12-09 | 2015-12-09 | Toothed belt tensioning device and fan variable pitch device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107781366A (en) * | 2017-09-25 | 2018-03-09 | 新疆金风科技股份有限公司 | Elasticity adjusting means and method, the pitch drive system of cog belt |
| CN109983221A (en) * | 2016-10-20 | 2019-07-05 | 西门子歌美飒可再生能源公司 | Connection device for wind turbine components |
| CN112969851A (en) * | 2018-10-12 | 2021-06-15 | 盖茨公司 | Wind turbine belt drive pitch control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109983221A (en) * | 2016-10-20 | 2019-07-05 | 西门子歌美飒可再生能源公司 | Connection device for wind turbine components |
| CN107781366A (en) * | 2017-09-25 | 2018-03-09 | 新疆金风科技股份有限公司 | Elasticity adjusting means and method, the pitch drive system of cog belt |
| CN112969851A (en) * | 2018-10-12 | 2021-06-15 | 盖茨公司 | Wind turbine belt drive pitch control device |
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