CN102494094B - Variable pitch radius based star chain transmission stepless speed change device - Google Patents
Variable pitch radius based star chain transmission stepless speed change device Download PDFInfo
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- CN102494094B CN102494094B CN201110428514.3A CN201110428514A CN102494094B CN 102494094 B CN102494094 B CN 102494094B CN 201110428514 A CN201110428514 A CN 201110428514A CN 102494094 B CN102494094 B CN 102494094B
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- control wheel
- accessory whorl
- star
- stepless speed
- transmission
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Abstract
The invention provides a variable pitch radius based star chain transmission stepless speed change device. The device is characterized in that: a star sprocket device on a transmission main shaft is driven by adopting a motor, and forms a sprocket transmission pair by combining with a bush roller chain; the star sprocket device comprises a control wheel arranged on the transmission main shaft, and left and right auxiliary wheels which are arranged on two sides of the control wheel respectively; a control wheel stator and a control wheel rotor which are connected with the transmission main shaft are arranged on the inner diameter of the control wheel body; two rows of staggered supports are uniformly distributed on the circumference of the outer profile of the control wheel, and are connected with synchronizers on the left and right auxiliary wheels through connecting rods. According to the variable pitch based star chain transmission stepless speed change device, the problems that a conventional traditional friction type stepless gearbox can not complete power transfer without friction, a high-power stepless gearbox can not realize high push power adjustment without a hydraulic system, and a silent chain transmission stepless gearbox system has higher price and the like can be solved. The variable pitch radius based star chain transmission stepless speed change device is suitable for various heavy construction equipment under heavy-load low-speed conditions, such as middle-high class cars, machine tools, hoisting machinery, heavy-load vehicles, lorries, elevators, transmission machinery.
Description
Technical field
The present invention relates to the star chain drive stepless speed changing device based on traitorous circle radius.
Background technique
Existing stepless speed changes devices major part relies on frictional force to carry out transmission, such as metal tape block-pushing stepless speed changes devices carries out transmission by producing friction force between metal tape and cone dish, obtain larger frictional force, to metal with very high requirement, metal tape easily damages, affect working life, and such stepless speed changes devices cannot be applied in heavy duty, slow-revving equipment and operating mode.As stepless speed changes devices will be applied in heavy duty, slow-revving engineering equipment operating mode, only have increase positive pressure could obtain larger frictional force and high-power transmission, and in existing stepless speed variator system, general employing oil hydraulic cylinder realizes the adjustment of high thrust and positive pressure, therefore, need to be equipped with hydraulic equipment, but the volume that hydraulic equipment relates to hydraulic system is comparatively large, energy consumption is higher.In addition, in stepless speed variator system, also there are some non-model control type stepless speed changes devicess, as adopted silent chain as driving medium, the transmission of motion under high pulling torque, the slow-speed of revolution and power can be realized, but the price of silent chain is high compared with the price of bush roller chain, the price of its stepless speed variator system costly, generally can only adopt in the accurate mechanical equipment that required precision is higher.
Summary of the invention
For above-mentioned situation, the object of the present invention is to provide one can be used for transmitting and high-powerly do not need adapted hydraulic system again and adopt bush roller chain as driving medium, also clutch is not needed, also can realize speed change when driven wheel is static, and structure is simple, easy to manufacture, cost is low, application area is large, is convenient to the star chain drive stepless speed changing device based on traitorous circle radius of penetration and promotion.
To achieve these goals, based on the star chain drive stepless speed changing device of traitorous circle radius, it is by the star-like chain gear apparatus on driven by motor transmission main shaft, and coordinate composition Chain conveyer secondary through bush roller chain, described star-like chain gear apparatus comprises the control wheel be arranged on transmission main shaft, be divided into the left accessory whorl of control wheel both sides and right accessory whorl, control wheel body internal diameter arranges control wheel stator and the control wheel rotor of connection for transmission main shaft, control wheel external frame is circumferentially evenly laid two and is arranged the bearing mutually staggered, this bearing through connecting rod be arranged at left accessory whorl and be connected with the synchronizer on right accessory whorl.
In order to implementation structure, effect optimization, its further step is:
Described synchronizer comprises the transmission countershaft connecting left accessory whorl and right accessory whorl, the slip teeth cover being set in transmission countershaft.
One end of described slip teeth cover is anodontia cylindrical sleeve, and axially evenly arranges several supporting positioning key mouth in anodontia cylindrical sleeve cover end, and the inner conical surface of slip teeth cover arranges fine thread.
Described transmission countershaft is from the initial keyway being set to roundlet shell of column, conical section, gear segment and great circle shell of column successively and being arranged on great circle shell of column of left end, and this keyway connects a minor sprocket through key.
The bearing of described control wheel is divided in two axial planes for often arranging 8.
The U-shaped enclosed ear seat of connection control wheeling support is established in one end of described connecting rod, and the other end of connecting rod establishes the L-type open type fork of connection for transmission countershaft.
The shaft shoulder portion of described left accessory whorl connects a ring electromagnet.
Described left accessory whorl and the radial circumference of right accessory whorl are equipped with guiding slip groove and extenal fixation ring and the left slider supporting with guiding slip groove, right slide block.
The internal diameter of described left slider is provided with ring gear and chute, arranges sliding pin and spring in chute.
The both sides of described left slider and right slide block are provided with the location convex tendon coordinated with the guiding slip groove of left accessory whorl and right accessory whorl.
The present invention adopts by the star-like chain gear apparatus on driven by motor transmission main shaft, and coordinate composition Chain conveyer secondary through bush roller chain, described star-like chain gear apparatus comprises the control wheel be arranged on transmission main shaft, be divided into the left accessory whorl of control wheel both sides and right accessory whorl, control wheel body internal diameter arranges control wheel stator and the control wheel rotor of connection for transmission main shaft, control wheel external frame is circumferentially evenly laid two and is arranged the bearing mutually staggered, this bearing is through connecting rod and the technological scheme being arranged at left accessory whorl and being connected with the synchronizer on right accessory whorl, solving existing conventional friction type stepless speed variator necessarily needs frictional force just can complete transmission of power, the price that big power variable speed unit then needs to adopt hydraulic system to realize the adjustment of high thrust and the silent chain drive stepless speed changing system difficult problem such as costly.
The beneficial effect that the present invention is produced compared to existing technology:
(I) the present invention adopts common bush roller chain to carry out the transmission of power, transmitted power, and carry-over moment is much larger than frictional stepless speed changes devices;
(II) component of the present invention's employing are all more common, do not have special required precision, and structure is simple, easy processing, and cost of production is low;
(III) the present invention adopts fully-machinery type structure to realize stepless change, and not only eliminate complicated hydraulic system, and the volume of device reduces greatly, speed-change process energy consumption is also less than traditional Hyaulic infinite variable speed device;
(IV) the present invention adopts slip teeth to overlap the structure be combined with transmission countershaft, effectively can reduce the impact in speed-change process, reach the effect of steady speed change;
(V) as long as the adaptive stepper motor of the present invention, its whole speed-change process just can realize automatically controlling completely, as designed by program module or sensor feedback signal makes machine in the course of the work, the velocity ratio consecutive variations of speed changer becomes certain suitable curve, output speed also can change, and reaches best effort effect and most high workload efficiency;
(VI) the present invention can not need to realize speed change when additional clutch in the static situation of driving wheel follower;
(VII) process of speed change of the present invention does not need to use clutch, can speed change at any time, decreases complicated ramped procedure and mechanism;
Not only (VIII) driving wheel of the present invention and follower adopt same structure, can simultaneously speed change, can speedup but also can slow down, and speed can also be made constant; Namely be speed increaser when velocity ratio is less than 1, when equaling 1, speed is constant, is retarder when being greater than 1; The scope of velocity ratio change greatly;
(IX) the present invention can also expand as the transmission of many row chains, and transmission power is increased further;
(X) the present invention uses bush roller chain to make driving medium, and do not need to drop into new manufacturing mechanism and production process improvement, processing ease, easy to maintenance, manufacturing efficiency is high, good product quality, and application area expands, and is convenient to penetration and promotion.
The various heavy engineering equipment that the present invention uses under being applicable to making heavy-duty low-speed operating mode.Such as medium-to-high grade car, lathe, Hoisting Machinery, truck, elevator, transmits machinery.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the plan view of Chain conveyer pair of the present invention.
Fig. 2 is the sectional view of the star-like chain gear apparatus of the present invention.
Fig. 3 is the partial enlarged drawing that synchronizer of the present invention is connected with left slider.
Fig. 4 is the partial enlarged drawing that left slider of the present invention is combined with left accessory whorl.
Fig. 5 is the plan view of left slider of the present invention.
Fig. 6 is the sectional view of left slider of the present invention.
Fig. 7 is the half sectional view of the left accessory whorl of the present invention.
Fig. 8 is the A-A sectional view of Fig. 7.
Fig. 9 is the plan view of control wheel of the present invention.
Figure 10 is the C-C sectional view of Fig. 9.
Figure 11 is the plan view of transmission countershaft of the present invention.
Figure 12 is the left side view of transmission countershaft of the present invention.
Figure 13 is the radial half sectional view of the right accessory whorl of the present invention.
Figure 14 is the plan view of slip teeth of the present invention cover.
Figure 15 is the sectional view of the F-F of Figure 14 of the present invention.
Figure 16 is the plan view of the right slide block of the present invention.
Figure 17 is the plan view of connecting rod of the present invention.
Figure 18 is the left side view of connecting rod of the present invention.
In figure: 1, motor, 2, transmission main shaft, 3, star-like chain gear apparatus, 30, convex tendon, 31, control wheel, 311, bearing, 312, control wheel stator, 313, control wheel rotor, 32, left accessory whorl, 323, ring electromagnet, 33, right accessory whorl, 34, connecting rod, 341, U-shaped enclosed ear seat, 342, L-type open type fork, 35, synchronizer, 351, transmission countershaft, 352, slip teeth cover, 353, positioning key mouth, 354, minor sprocket, 36, guiding slip groove, 37, left slider, 371, ring gear, 372, chute, 373, sliding pin, 38, right slide block, 39, extenal fixation ring, 4, bush roller chain, 5, Idle wheel.
Embodiment
By reference to the accompanying drawings, based on the star chain drive stepless speed changing device of traitorous circle radius, it is driven the star-like chain gear apparatus 3 on transmission main shaft 2 by motor 1, and coordinate composition Chain conveyer secondary through bush roller chain 4, described star-like chain gear apparatus 3 comprises the control wheel 31 be arranged on transmission main shaft 2, be divided into left accessory whorl 32 and the right accessory whorl 33 of control wheel 31 both sides, control wheel 31 body internal diameter arranges control wheel stator 312 and the control wheel rotor 313 of connection for transmission main shaft 2, control wheel stator 312 is by spline and transmission main shaft 2 interference fit, control wheel rotor 313 coordinates with control wheel stator 312, control wheel rotor 313 can rotate an angle around control wheel stator 312 under the driving of control signal, control wheel rotor 313 is connected with control wheel 31 body, and move together, control wheel 31 external frame is circumferentially evenly laid and two is arranged the bearing 311 mutually staggered, this bearing 311 through connecting rod 34 be arranged at left accessory whorl 32 and be connected with the synchronizer 35 on right accessory whorl 33.Synchronizer 35 comprises the transmission countershaft 351 connecting left accessory whorl 32 and right accessory whorl 33, the slip teeth being set in transmission countershaft 351 cover 352.One end of slip teeth cover 352 is anodontia cylindrical sleeve, and axially evenly arranges more than 3 supporting positioning key mouths 353 in anodontia cylindrical sleeve cover end; In order to increase the frictional force of conical section male cone (strobilus masculinus) on the inner conical surface of slip teeth cover 352 and transmission countershaft 351, make transmission countershaft 351 can Rapid Relative synchronous in left slider 37, therefore arrange at the inner conical surface of slip teeth cover 352 can destroy slip teeth cover 352 inner conical surface and transmission countershaft 351 on the fine thread of lubricant film between conical section male cone (strobilus masculinus) two conical surfaces.Transmission countershaft 351 is from the initial keyway being set to roundlet shell of column, conical section, gear segment and great circle shell of column successively and being arranged on great circle shell of column of left end, and this keyway connects a minor sprocket 354 through key.The bearing 311 of control wheel 31 is divided in two axial planes for often arranging 8.Bearing 311 is connected with the U-shaped enclosed ear seat 341 of connecting rod 34 one end, and the other end of connecting rod 34 is L-type open type fork 342, and it is connected with transmission countershaft 351 cassette.In order to the external tooth of the ring gear 371 with transmission countershaft 351 section of cogging that make the left slider 37 in left accessory whorl 32 departs from, transmission countershaft 351 can rotation, connects the ring electromagnet 323 of left accessory whorl 32 body of an attraction in the shaft shoulder portion of left accessory whorl 32.The radial circumference of left accessory whorl 32 and right accessory whorl 33 is equipped with guiding slip groove 36 and extenal fixation ring 39 and the left slider 37 supporting with guiding slip groove 36, right slide block 38.In order to make transmission countershaft and left slider phase III of speed change and reseting stage synchronous, be provided with ring gear 371 and chute 372 at the internal diameter of left slider 37, sliding pin 373 and spring be set in chute 372.In order to ensure the stuck phenomenon that slide block can not can cause because of right position unbalance stress in corresponding chute, therefore be provided with the location convex tendon 30 coordinated with the guiding slip groove 37 of left accessory whorl 33 and right accessory whorl 34 in the both sides of left slider 37 and right slide block 38.Left accessory whorl 32 is coordinated by spline gaps with transmission main shaft 2, it can be moved to the left under the effect of ring electromagnet 323, convex tendon 30 on left slider 37 coordinates with the guiding slip groove 36 on left accessory whorl 32, left accessory whorl 32 revolves round the sun with transmission main shaft 2 together with left slider 37, right accessory whorl 33 is by spline and transmission main shaft 2 interference fit, convex tendon 30 on right slide block 38 coordinates with the guiding slip groove 36 on right accessory whorl 33, right accessory whorl 33 revolves round the sun with transmission main shaft 2 together with right slide block 38, determines the axial position of transmission countershaft 351 in star-like chain gear apparatus 3.
Shown in accompanying drawing, the working principle that the present invention is based on the star chain drive stepless speed changing device of traitorous circle radius is:
Traditional radius drive sprocket of determining, according to Chain conveyer polygonal principle, is radially split into some parts by the present invention, by changing the length of every part, reaches the Pitch radius changing sprocket driving.Concrete measure is: see accompanying drawing, and this device speed-change process is divided into three steps, one, separation phase, two, gear shift stage, three, reseting stage.
The process of speed change: the first step of speed change: separation phase, namely under the effect of ring electromagnet 323, left accessory whorl 32 is moved to the left a bit of distance, meanwhile, left accessory whorl 32 drives left slider 37 to move together, the ring gear 371 of left slider 37 is departed from the external tooth of transmission countershaft 351 section of cogging, now transmission countershaft 351 can freely rotate i.e. rotation relative to left accessory whorl 32, right accessory whorl 33, and the power on transmission main shaft 2 cannot pass on transmission countershaft 351, second step: gear shift stage, now, control wheel 31 is under corresponding control system controls, and the control wheel rotor 313 of control wheel 31 rotates an angle relative to the control wheel stator 312 of control wheel 31, and namely control wheel 31 body rotates an angle relative to transmission main shaft 2, the connecting rod 34 that connection control takes turns 31 bearings 311 drives the left slider 37 in synchronizer 35 on transmission countershaft 351, right slide block 38 to run along left accessory whorl 32, right accessory whorl 33 guiding slip groove 36, thus change the position of synchronizer 35, namely change the Pitch radius of star chain drive stepless speed changing device, in this process, the minor sprocket 354 being installed on transmission countershaft 351 is free rotations, i.e. minor sprocket 354 rotation, under the synergy of Idle wheel 5, ensure that chain is tensioning state all the time, and there will not be jumping tooth, stuck, skidding, 3rd step: reseting stage, when synchronizer 35 moves to new position, minor sprocket 354 also reaches new position simultaneously, now, ring electromagnet 323 power-off, move right under the action of reset spring of left accessory whorl 32 in ring electromagnet 323, left slider 37 also moves right under left accessory whorl 32 drives, sliding pin 373 simultaneously in chute 372 also promotes slip teeth cover 352 and moves right, until the inner conical surface of slip teeth cover 352 contacts with the male cone (strobilus masculinus) of the conical section of transmission countershaft 351, after contact, the slip teeth fine thread overlapped on 352 inner conical surfaces also can destroy the lubricant film between the male cone (strobilus masculinus) of the slip teeth cover inner conical surface of 352 and the conical section of transmission countershaft 351, the male cone (strobilus masculinus) of the slip teeth cover inner conical surface of 352 and the conical section of transmission countershaft 351 produces frictional force, now, left slider 37 continues to move to right, spring between sliding pin 373 and left slider 37 is compressed, frictional force between slip teeth cover 352 and transmission countershaft 351 increases further, transmission countershaft 351 speed reduces, when slip teeth cover 352 is fully compressed into left slider 37, left slider 37 ring gear 371 engages under the leading role of end relief with the external gear of transmission countershaft 351 gear segment, left slider 37 continues to move to right until the ring gear 371 of left slider 37 engages completely with the external gear of transmission countershaft 351 gear segment, minor sprocket 354 is locked, moment of rotation on transmission main shaft 2 is by left accessory whorl 32, left slider 37, transmission countershaft 351, minor sprocket 354 is delivered on bush roller chain 4, thus the power exported by motor 1 passes to follower by star-like chain gear apparatus 3, the speed change task of star chain drive stepless speed changing device completes.
Claims (7)
1. based on the star chain drive stepless speed changing device of traitorous circle radius, it is characterized in that it drives the star-like chain gear apparatus (3) on transmission main shaft (2) by motor (1), and coordinate composition Chain conveyer secondary through bush roller chain (4), described star-like chain gear apparatus (3) comprises the control wheel (31) be arranged on transmission main shaft (2), be divided into left accessory whorl (32) and the right accessory whorl (33) of control wheel (31) both sides, the shaft shoulder portion of left accessory whorl (32) connects a ring electromagnet (323), control wheel (31) body internal diameter arranges the control wheel stator (312) of connection for transmission main shaft (2) and control wheel rotor (313), control wheel (31) external frame is circumferentially evenly laid two and is arranged the bearing (311) mutually staggered, bearing (311) is divided in two axial planes for often arranging 8, this bearing (311) through connecting rod (34) be arranged at left accessory whorl (32) and be connected with the synchronizer (35) on right accessory whorl (33), one end of connecting rod (34) establishes connection control to take turns the U-shaped enclosed ear seat (341) of (31) bearing (311), the other end of connecting rod (34) establishes the L-type open type fork (342) of connection for transmission countershaft (351).
2. the star chain drive stepless speed changing device based on traitorous circle radius according to claim 1, is characterized in that described synchronizer (35) comprises the transmission countershaft (351) connecting left accessory whorl (32) and right accessory whorl (33), the slip teeth cover (352) being set in transmission countershaft (351).
3. the star chain drive stepless speed changing device based on traitorous circle radius according to claim 2, the one end that it is characterized in that described slip teeth cover (352) is anodontia cylindrical sleeve, and in anodontia cylindrical sleeve cover end, axially several supporting positioning key mouth (353) being evenly set, the inner conical surface of slip teeth cover (352) arranges fine thread.
4. the star chain drive stepless speed changing device based on traitorous circle radius according to claim 2, it is characterized in that described transmission countershaft (351) is from the initial keyway being set to roundlet shell of column, conical section, gear segment and great circle shell of column successively and being arranged on great circle shell of column of left end, this keyway connects a minor sprocket (354) through key.
5. the star chain drive stepless speed changing device based on traitorous circle radius according to claim 1, the radial circumference that it is characterized in that described left accessory whorl (32) and right accessory whorl (33) is equipped with guiding slip groove (36) and extenal fixation ring (39) and the left slider (37) supporting with guiding slip groove (36), right slide block (38).
6. the star chain drive stepless speed changing device based on traitorous circle radius according to claim 5, it is characterized in that the internal diameter of described left slider (37) is provided with ring gear (371) and chute (372), sliding pin (373) and spring are set in chute (372).
7. the star chain drive stepless speed changing device based on traitorous circle radius according to claim 5, is characterized in that the both sides of described left slider (37) and right slide block (38) are provided with the location convex tendon (30) coordinated with the guiding slip groove (36) of left accessory whorl (33) and right accessory whorl (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110428514.3A CN102494094B (en) | 2011-12-20 | 2011-12-20 | Variable pitch radius based star chain transmission stepless speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110428514.3A CN102494094B (en) | 2011-12-20 | 2011-12-20 | Variable pitch radius based star chain transmission stepless speed change device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102494094A CN102494094A (en) | 2012-06-13 |
| CN102494094B true CN102494094B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110428514.3A Expired - Fee Related CN102494094B (en) | 2011-12-20 | 2011-12-20 | Variable pitch radius based star chain transmission stepless speed change device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102494094B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129044A (en) * | 1977-05-19 | 1978-12-12 | Erickson Marlo W V | Variable gear ratio chain drive system for bicycles |
| CN2182785Y (en) * | 1993-12-19 | 1994-11-16 | 陈林 | Stepless speed changing device for bicycle |
| CN2200728Y (en) * | 1994-08-20 | 1995-06-14 | 明建 | Planet chain wheel quasi-stepless position gear |
| CN102062196A (en) * | 2009-06-02 | 2011-05-18 | 杨鲁川 | Equivalent diameter adjustable chain wheel device, stepless speed change device and power system |
| CN202402581U (en) * | 2011-12-20 | 2012-08-29 | 湖南科技大学 | Variable-pitch-radius based star chain transmission stepless speed change device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3455170B2 (en) * | 2000-08-29 | 2003-10-14 | 有限会社ワンダー企画 | Continuous stepless transmission |
| JP3435408B1 (en) * | 2002-10-31 | 2003-08-11 | 有限会社ワンダー企画 | Continuously variable transmission |
-
2011
- 2011-12-20 CN CN201110428514.3A patent/CN102494094B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129044A (en) * | 1977-05-19 | 1978-12-12 | Erickson Marlo W V | Variable gear ratio chain drive system for bicycles |
| CN2182785Y (en) * | 1993-12-19 | 1994-11-16 | 陈林 | Stepless speed changing device for bicycle |
| CN2200728Y (en) * | 1994-08-20 | 1995-06-14 | 明建 | Planet chain wheel quasi-stepless position gear |
| CN102062196A (en) * | 2009-06-02 | 2011-05-18 | 杨鲁川 | Equivalent diameter adjustable chain wheel device, stepless speed change device and power system |
| CN202402581U (en) * | 2011-12-20 | 2012-08-29 | 湖南科技大学 | Variable-pitch-radius based star chain transmission stepless speed change device |
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| Publication number | Publication date |
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| CN102494094A (en) | 2012-06-13 |
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