CN202402581U - 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 PDF

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Publication number
CN202402581U
CN202402581U CN2011205353177U CN201120535317U CN202402581U CN 202402581 U CN202402581 U CN 202402581U CN 2011205353177 U CN2011205353177 U CN 2011205353177U CN 201120535317 U CN201120535317 U CN 201120535317U CN 202402581 U CN202402581 U CN 202402581U
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CN
China
Prior art keywords
stepless speed
control wheel
chain
accessory whorl
star
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Expired - Fee Related
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CN2011205353177U
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Chinese (zh)
Inventor
陈立锋
龙亚彬
余以道
曹兴荣
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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Priority to CN2011205353177U priority Critical patent/CN202402581U/en
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Publication of CN202402581U publication Critical patent/CN202402581U/en
Anticipated expiration legal-status Critical
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Abstract

A variable-pitch-radius based star chain transmission stepless speed change device adopts a chain transmission pair formed by that a motor drives star sprocket wheel devices on transmission spindles by means of match of a bush roller chain. Each star sprocket wheel device comprises a control wheel, a left counter wheel and a right counter wheel, wherein the control wheel is arranged on the corresponding transmission spindle, and the left counter wheel and the right counter wheel are arranged on two sides of the control wheel respectively. A control wheel stator and a control wheel rotor which are connected with the corresponding transmission spindle are arranged on the inner diameter of each control body, mutually staggered supports in two rows are uniformly arranged on the circumference of the outer contour of each control wheel, and the supports are connected with synchronizers which are arranged on the left counter wheels and the right counter wheels through connecting rods. The variable-pitch-radius based star chain transmission stepless speed change device solves the problems that an existing traditional friction-type stepless speed change device is bound to complete power transfer with friction, a high-power stepless speed change device needs to adopt a hydraulic system to realize high-thrust adjustment, a tooth-form chain transmission stepless speed change system is expensive and the like, and is suitable for use as various heavy engineering equipment such as medium-grade and high-grade cars, machine tools, hoisting machines, motor lorries, elevators and transmission machines under the heavy-load low-speed work condition.

Description

Star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty
Technical field
The utility model relates to the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty.
Background technique
Existing stepless speed changes devices major part is to rely on frictional force to carry out transmission; Such as metal tape block-pushing stepless speed changes devices is to carry out transmission by producing friction force between metal tape and the awl dish; Obtain bigger frictional force, metal is had very high requirement, metal tape damages easily; Influence working life, and such stepless speed changes devices can't be applied in heavy duty, slow-revving equipment and the operating mode.As in heavy duty, slow-revving engineering equipment operating mode, use stepless speed changes devices; Have only the positive pressure of increase could obtain bigger frictional force and high-power transmission, and in existing stepless speed variator system, generally adopt oil hydraulic cylinder to realize that high thrust is the adjusting of positive pressure; Therefore; Need to be equipped with hydraulic equipment, but that hydraulic equipment relates to the volume of hydraulic system is bigger, energy consumption is higher.In addition; In stepless speed variator system, also there are some non-frictional stepless speed changes devicess, as adopting silent chain as driving medium; Can realize motion and the transmission of power under high pulling torque, the slow-speed of revolution; But the price of silent chain is high than the price of bush roller chain, and the price of its stepless speed variator system is expensive more, generally can only in the higher accurate mechanical equipment of required precision, adopt.
Summary of the invention
To above-mentioned situation, the purpose of the utility model be to provide a kind of can be used to transmit high-powerly do not need the adapted hydraulic system again and adopt bush roller chain as driving medium, do not need clutch yet; Also can under the static situation of driven wheel, realize speed change; And simple in structure, easy to manufacture, cost is low; Application area is big, is convenient to the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty of penetration and promotion.
To achieve these goals; Star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty; It is by the star-like chain gear apparatus on the driven by motor transmission main shaft, and it is secondary to form chain-driven through the bush roller chain cooperation, and said star-like chain gear apparatus comprises the control wheel that is arranged on the transmission main shaft; Be divided into the left accessory whorl and the right accessory whorl of control wheel both sides; Control wheel body internal diameter is provided with the control wheel stator and control wheel rotor that connects transmission main shaft, evenly lays the bearing that two rows stagger each other on the control wheel external frame circumference, this bearing through connecting rod be arranged at left accessory whorl and link to each other with synchronizer on the right accessory whorl.
For implementation structure, effect optimization, its further step is:
Described synchronizer comprises the transmission countershaft that connects left accessory whorl and right accessory whorl, the sliding tooth cover that is set in transmission countershaft.
One end of described sliding tooth cover is anodontia cylindrical sleeve, and in anodontia cylinder condom end several supporting positioning key mouths is set evenly axially, and the inner conical surface of sliding tooth cover is provided with fine thread.
Described transmission countershaft is made as roundlet shell of column, conical section, gear segment and great circle shell of column successively and is arranged on the keyway on the great circle shell of column from left end is initial, and this keyway connects a minor sprocket through key.
The bearing of described control wheel is that 8 of every rows are divided in two axial planes.
One end of described connecting rod is established the U type enclosed ear seat that connects the control wheeling support, and the other end of connecting rod is established the L type open type fork that connects transmission countershaft.
The shaft shoulder portion of described left accessory whorl connects a ring electromagnet.
Be equipped with on the radial circumference of described left accessory whorl and right accessory whorl guiding slip groove and outer fixing ring and with supporting left slider, the right slide block of guiding slip groove.
The internal diameter of described left slider is provided with ring gear and chute, and sliding pin and spring are set in the chute.
The both sides of described left slider and right slide block are provided with the location convex tendon that cooperates with the guiding slip groove of left accessory whorl and right accessory whorl.
The utility model adopts by the star-like chain gear apparatus on the driven by motor transmission main shaft; And it is secondary to form chain-driven through the bush roller chain cooperation; Said star-like chain gear apparatus comprises the control wheel that is arranged on the transmission main shaft; Be divided into the left accessory whorl and the right accessory whorl of control wheel both sides; Control wheel body internal diameter is provided with the control wheel stator and control wheel rotor that connects transmission main shaft, evenly lays the bearing that two rows stagger each other on the control wheel external frame circumference, this bearing through connecting rod be arranged at the technological scheme that left accessory whorl links to each other with synchronizer on the right accessory whorl; Having solved existing traditional frictional stepless speed variator necessarily needs frictional force could accomplish transmission of power, and big power variable speed unit then need adopt the price of adjusting and silent chain drive stepless speed changing system that hydraulic system realizes high thrust than difficult problems such as costlinesses.
The utility model is compared the beneficial effect that existing technology produces:
(I) the utility model adopts common bush roller chain to carry out the transmission of power, transmitted power, and carry-over moment is much larger than the frictional stepless speed changes devices;
(II) component of the utility model employing are all more common, do not have special required precision, simple in structure, easy processing, and cost of production is low;
(III) the utility model adopts the fully-machinery type structure to realize stepless change, has not only saved complicated hydraulic system, and the volume of device dwindles greatly, and the speed-change process energy consumption also is less than traditional Hyaulic infinite variable speed device;
(IV) the utility model adopts the structure that sliding tooth cover combines with transmission countershaft, can effectively reduce the impact in the speed-change process, reaches the effect of steady speed change;
(V) the utility model needs only an adaptive stepper motor; Its whole speed-change process just can be realized control automatically fully; As making machine in the course of the work through program module design or sensor feedback signal; The velocity ratio of speed changer is varied to the suitable curve of certain bar continuously, and output speed also can change, and reaches best effort effect and high workload efficient;
(VI) the utility model can be realized speed change under the situation of all static situation of driving wheel follower and the clutch that need not add;
(VII) process of the utility model speed change need not used clutch, and speed change has reduced complicated speed change program and mechanism at any time;
(VIII) driving wheel of the utility model and follower adopt same structure, and speed change promptly can speedup can be slowed down again simultaneously, can also make speed constant; Promptly when velocity ratio be speed increaser less than 1 the time, equal at 1 o'clock, speed is constant, is retarder greater than 1 o'clock; The scope that velocity ratio changes greatly;
(IX) the utility model can also be expanded the chain-driven into many rows, and transmission power is further increased;
(X) the utility model uses bush roller chain to make driving medium, and need not drop into new manufacturing mechanism and production process and improve, processing ease, easy to maintenance, manufacturing efficiency is high, good product quality, application area enlarges, and is convenient to penetration and promotion.
The utility model is fit to do the various heavy engineering equipment that use under the heavy-duty low-speed operating mode.Such as medium-to-high grade car, lathe, Hoisting Machinery, truck, elevator transmits machinery.
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Description of drawings
Fig. 1 is the secondary plan view of the utility model chain-driven.
Fig. 2 is the sectional view of the star-like chain gear apparatus of the utility model.
Fig. 3 is the partial enlarged drawing that the utility model synchronizer is connected with left slider.
Fig. 4 is the partial enlarged drawing that the utility model left slider combines with left accessory whorl.
Fig. 5 is the plan view of the utility model left slider.
Fig. 6 is the sectional view of the utility model left slider.
Fig. 7 is the half sectional view of the utility model left side accessory whorl.
Fig. 8 is the A-A sectional view of Fig. 7.
Fig. 9 is the plan view of the utility model control wheel.
Figure 10 is the C-C sectional view of Fig. 9.
Figure 11 is the plan view of the utility model transmission countershaft.
Figure 12 is the left side view of the utility model transmission countershaft.
Figure 13 is the radially half sectional view of the right accessory whorl of the utility model.
Figure 14 is the plan view of the sliding tooth cover of the utility model.
Figure 15 is the sectional view of the F-F of the utility model Figure 14.
Figure 16 is the plan view of the right slide block of the utility model.
Figure 17 is the plan view of the utility model connecting rod.
Figure 18 is the left side view of the utility model connecting rod.
Among the figure: 1, motor, 2, transmission main shaft, 3, star-like chain gear apparatus, 30, convex tendon, 31, the control wheel, 311, bearing; 312, control wheel stator, 313, control wheel rotor, 32, left accessory whorl, 323, the ring electromagnet, 33, right accessory whorl, 34, connecting rod; 341, U type enclosed ear seat, 342, L type open type fork, 35, synchronizer, 351, transmission countershaft, 352, sliding tooth cover, 353, the 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, the outer fixing ring, 4, bush roller chain, 5, Idle wheel.
Embodiment
In conjunction with accompanying drawing; Based on the star chain-driven stepless speed changes devices of the circle radius of switching political loyalty, the star-like chain gear apparatus 3 that it is driven on the transmission main shaft 2 by motor 1, and it is secondary to form chain-driven through bush roller chain 4 cooperations; Said star-like chain gear apparatus 3 comprises the control wheel 31 that is arranged on the transmission main shaft 2; Be divided into the left accessory whorl 32 and right accessory whorl 33 of control wheel 31 both sides, control wheel 31 body internal diameters are provided with the control wheel stator 312 and control wheel rotor 313 that connects transmission main shaft 2, and control wheel stator 312 is through spline and transmission main shaft 2 interference fit; Control wheel rotor 313 cooperates 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 links to each other with control wheel 31 bodies, and motion together; Evenly lay the bearing 311 that two rows stagger each other on the control wheel 31 external frame circumference, this bearing 311 through connecting rod 34 be arranged at left accessory whorl 32 and link to each other with synchronizer 35 on the right accessory whorl 33.Synchronizer 35 comprises the transmission countershaft 351 that connects left accessory whorl 32 and right accessory whorl 33, the sliding tooth cover 352 that is set in transmission countershaft 351.One end of sliding tooth cover 352 is anodontia cylindrical sleeve, and in anodontia cylinder condom end positioning key mouth 353 supporting more than 3 is set evenly axially; Frictional force for conical section male cone (strobilus masculinus) on the inner conical surface that increases sliding tooth cover 352 and the transmission countershaft 351; Make the transmission countershaft 351 can be synchronous with respect to left slider 37 fast, so can destroy the fine thread of the lubricant film between two conical surfaces of conical section male cone (strobilus masculinus) on inner conical surface and the transmission countershaft 351 of cunning tooth cover 352 the inner conical surface setting of sliding tooth cover 352.Transmission countershaft 351 is made as roundlet shell of column, conical section, gear segment and great circle shell of column successively and is arranged on the keyway on the great circle shell of column from left end is initial, and this keyway connects a minor sprocket 354 through key.The bearing 311 of control wheel 31 is divided in two axial planes for 8 of every rows.Bearing 311 is connected with the U type enclosed ear seat 341 of connecting rod 34 1 ends, and the other end of connecting rod 34 is a L type open type fork 342, and it is connected with transmission countershaft 351 cassettes.For the ring gear 371 that makes the left slider 37 in the left accessory whorl 32 external tooth with transmission countershaft 351 sections of cogging breaks away from, transmission countershaft 351 can rotation, connects the ring electromagnet 323 of left accessory whorl 32 bodies of an attraction in the shaft shoulder portion of left accessory whorl 32.Be equipped with on the radial circumference of left side accessory whorl 32 and right accessory whorl 33 guiding slip groove 36 and outer fixing ring 39 and with supporting left slider 37, the right slide block 38 of guiding slip groove 36.Is that reseting stage is synchronous in order to make transmission countershaft and left slider in the phase III of speed change, is provided with ring gear 371 and chute 372 at the internal diameter of left slider 37, and sliding pin 373 and spring are set in the chute 372.For the stuck phenomenon that guarantees that slide block can not cause because of position, left and right sides unbalance stress in corresponding chute, so be provided with the location convex tendon 30 that cooperates 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 side accessory whorl 32 passes through the spline Spielpassung with transmission main shaft 2; It can be moved to the left under the effect of ring electromagnet 323; Convex tendon 30 on the left slider 37 cooperates with guiding slip groove 36 on the left accessory whorl 32; Left side accessory whorl 32 and left slider 37 be together with transmission main shaft 2 revolution, and right accessory whorl 33 is through spline and transmission main shaft 2 interference fit, and the convex tendon 30 on the right slide block 38 cooperates with guiding slip groove 36 on the right accessory whorl 33; Right accessory whorl 33 revolves round the sun with transmission main shaft 2 with right slide block 38 together, confirms the axial position of transmission countershaft 351 in star-like chain gear apparatus 3.
Shown in accompanying drawing; The utility model based on the working principle of the star chain-driven stepless speed changes devices of the circle radius of switching political loyalty is: the utility model is according to chain-driven polygonal principle; Traditional radius drive sprocket of deciding is radially split into several portions; Through changing the length of each part, reach the Pitch radius that changes sprocket driving.Concrete measure is: referring to accompanying drawing, this device speed-change process is divided into three steps, and one, separation phase, two, gear shift stage, three, reseting stage.The process of speed change: the first step of speed change: separation phase; Promptly under the effect of ring electromagnet 323; Left side accessory whorl 32 is moved to the left a bit of distance; Meanwhile, left accessory whorl 32 drives left slider 37 and moves together, makes the ring gear 371 of left slider 37 and the external tooth of transmission countershaft 351 sections of cogging break away from; This moment transmission countershaft 351 can be with respect to left accessory whorl 32, right accessory whorl 33 freely rotates is rotation, the power on the transmission main shaft 2 can't pass on the transmission countershaft 351; Second step: gear shift stage; At this moment, control wheel 31 is under the control of control corresponding system, and the control wheel rotor 313 of control wheel 31 rotates an angle with respect to the control wheel stator 312 of control wheel 31, and promptly control wheel 31 bodies rotate an angle with respect to transmission main shaft 2; The connecting rod 34 that connects control wheel 31 bearings 311 drives the left slider 37 on the transmission countershaft 351 in the synchronizers 35, right slide block 38 along left accessory whorl 32,36 operations of right accessory whorl 33 guiding slip grooves; Thereby change the position of synchronizer 35, promptly change the Pitch radius of star chain-driven stepless speed changes devices; In this process, the minor sprocket 354 that is installed on transmission countershaft 351 is freely to rotate, i.e. minor sprocket 354 rotations; Under the synergy of Idle wheel 5, guarantee that chain is tensioning state all the time, and tooth, stuck, skidding can not occur jumping; The 3rd step: reseting stage; When synchronizer 35 moves to new position, minor sprocket 354 also reaches new position simultaneously; At this moment, 323 outages of ring electromagnet move right under the action of reset spring of left accessory whorl 32 in ring electromagnet 323; Left slider 37 drives down at left accessory whorl 32 and also moves right, and the sliding pins 373 in the chute 372 also promote sliding tooth cover 352 and move right simultaneously, overlaps 352 inner conical surface and contacts with the male cone (strobilus masculinus) of the conical section of transmission countershaft 351 up to sliding tooth; After the contact, sliding tooth overlaps the lubricant film between the male cone (strobilus masculinus) of inner conical surface that fine thread on 352 inner conical surfaces also can destroy sliding tooth cover 352 and the conical section of transmission countershaft 351, the male cone (strobilus masculinus) generation frictional force of the inner conical surface of sliding tooth cover 352 and the conical section of transmission countershaft 351; At this moment; Left slider 37 continues to move to right, and the spring between sliding pin 373 and the left slider 37 is compressed, and the frictional force between sliding tooth cover 352 and the transmission countershaft 351 further increases; Transmission countershaft 351 speed reduce; When sliding tooth cover 352 when left slider 37 is advanced in compression fully, left slider 37 ring gears 371 mesh under the leading role of end relief with the external gear of transmission countershaft 351 gear segments, left slider 37 continues to move to right and meshes fully until the ring gear 371 of left slider 37 and the external gear of transmission countershaft 351 gear segments; Minor sprocket 354 is by locked; Moment of rotation on the transmission main shaft 2 is through left accessory whorl 32, left slider 37, transmission countershaft 351; Minor sprocket 354 is delivered on the bush roller chain 4, thereby the power of motor 1 output is passed to follower through star-like chain gear apparatus 3; The speed change task of star chain-driven stepless speed changes devices is accomplished.

Claims (10)

1. based on the star chain-driven stepless speed changes devices of the circle radius of switching political loyalty; It is characterized in that it drives the star-like chain gear apparatus (3) on the transmission main shaft (2) by motor (1); And it is secondary to form chain-driven through bush roller chain (4) cooperation; Said star-like chain gear apparatus (3) comprises the control wheel (31) that is arranged on the transmission main shaft (2); Be divided into the left accessory whorl (32) and the right accessory whorl (33) of control wheel (31) both sides; Control wheel (31) body internal diameter is provided with the control wheel stator (312) and control wheel rotor (313) that connects transmission main shaft (2), evenly lays the bearing (311) that two rows stagger each other on control wheel (31) external frame circumference, this bearing (311) through connecting rod (34) be arranged at left accessory whorl (32) and link to each other with synchronizer (35) on the right accessory whorl (33).
2. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 1 is characterized in that described synchronizer (35) comprises the transmission countershaft (351) that connects left accessory whorl (32) and right accessory whorl (33), the sliding tooth cover (352) that is set in transmission countershaft (351).
3. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 2; An end that it is characterized in that described sliding tooth cover (352) is anodontia cylindrical sleeve; And several supporting positioning key mouths (353) axially evenly being set in anodontia cylinder condom end, the inner conical surface of sliding tooth cover (352) is provided with fine thread.
4. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 2; It is characterized in that described transmission countershaft (351) is made as roundlet shell of column, conical section, gear segment and great circle shell of column successively and is arranged on the keyway on the great circle shell of column from left end is initial, this keyway connects a minor sprocket (354) through key.
5. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 1 is characterized in that the bearing (311) of described control wheel (31) is divided in two axial planes for 8 of every rows.
6. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 1; An end that it is characterized in that described connecting rod (34) is established the U type enclosed ear seat (341) that connects control wheel (31) bearing (311), and the other end of connecting rod (34) is established the L type open type fork (342) that connects transmission countershaft (351).
7. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 1 is characterized in that the shaft shoulder portion of described left accessory whorl (32) connects a ring electromagnet (323).
8. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 1, it is characterized in that being equipped with on the radial circumference of described left accessory whorl (32) and right accessory whorl (33) guiding slip groove (36) and outer fixing ring (39) and with supporting left slider (37), the right slide block (38) of guiding slip groove (36).
9. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 8 is characterized in that the internal diameter of described left slider (37) is provided with ring gear (371) and chute (372), and sliding pin (373) and spring are set in the chute (372).
10. the star chain-driven stepless speed changes devices based on the circle radius of switching political loyalty according to claim 8 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) that cooperates with the guiding slip groove (37) of left accessory whorl (33) and right accessory whorl (34).
CN2011205353177U 2011-12-20 2011-12-20 Variable-pitch-radius based star chain transmission stepless speed change device Expired - Fee Related CN202402581U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205353177U CN202402581U (en) 2011-12-20 2011-12-20 Variable-pitch-radius based star chain transmission stepless speed change device

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Application Number Priority Date Filing Date Title
CN2011205353177U CN202402581U (en) 2011-12-20 2011-12-20 Variable-pitch-radius based star chain transmission stepless speed change device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102494094A (en) * 2011-12-20 2012-06-13 湖南科技大学 Variable pitch radius based star chain transmission stepless speed change device
CN107002836A (en) * 2014-12-09 2017-08-01 加特可株式会社 Gear
CN108662121A (en) * 2018-05-18 2018-10-16 清远初曲智能科技有限公司 A kind of unidirectional expansion tightening wheel of adjustable intelligence transmission of automotive alloys high precision electric control sensing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102494094A (en) * 2011-12-20 2012-06-13 湖南科技大学 Variable pitch radius based star chain transmission stepless speed change device
CN102494094B (en) * 2011-12-20 2014-12-17 湖南科技大学 Variable pitch radius based star chain transmission stepless speed change device
CN107002836A (en) * 2014-12-09 2017-08-01 加特可株式会社 Gear
CN108662121A (en) * 2018-05-18 2018-10-16 清远初曲智能科技有限公司 A kind of unidirectional expansion tightening wheel of adjustable intelligence transmission of automotive alloys high precision electric control sensing

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120829

Termination date: 20141220

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