WO2019134663A1 - Transmission à variation continue-transmission par engrènement à haute efficacité et longue durée de vie - Google Patents

Transmission à variation continue-transmission par engrènement à haute efficacité et longue durée de vie Download PDF

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Publication number
WO2019134663A1
WO2019134663A1 PCT/CN2019/070240 CN2019070240W WO2019134663A1 WO 2019134663 A1 WO2019134663 A1 WO 2019134663A1 CN 2019070240 W CN2019070240 W CN 2019070240W WO 2019134663 A1 WO2019134663 A1 WO 2019134663A1
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WIPO (PCT)
Prior art keywords
gear
transmission
synchronizer
intermediate shaft
speed
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PCT/CN2019/070240
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English (en)
Chinese (zh)
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王国斌
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王国斌
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Publication of WO2019134663A1 publication Critical patent/WO2019134663A1/fr

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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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/065—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with a plurality of driving or driven shafts
    • 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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing
    • F16H2037/025—CVT's in which the ratio coverage is used more than once to produce the overall transmission ratio coverage, e.g. by shift to end of range, then change ratio in sub-transmission and shift CVT through range once again
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0065—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising nine forward speeds

Definitions

  • This application belongs to the technical field of mechanical transmission and continuously variable transmission design and manufacturing.
  • the existing continuously variable transmission adopts friction traction transmission, and has the defects of small torque, low efficiency and high cost.
  • the patented technology "slide deformation tooth stepless meshing movable gear” patent number 200580039668.6, describes an intermeshing type continuously variable transmission, which is characterized in that the meshing type stepless speed change function is constructed by the sliding piece movable teeth, and the traditional stepless speed is overcome.
  • the transmission relies on the shortcomings of friction transmission and has the characteristics of high power and high efficiency.
  • the diameter of the cone directly affects the range of the transmission ratio
  • the diameter of the cone in order to design a transmission with a larger speed ratio range, the diameter of the cone must be enlarged, and at the same time, the axial displacement stroke of the cone is increased during shifting, which will make the radial direction of the transmission.
  • the gear and axial dimensions are greatly increased, the chain circumference is increased, the shaft size is lengthened and bolded, and the corresponding parts of the box body are increased in volume and weight is increased.
  • the continuously variable transmission participates in the whole process of the entire working period of the transmission, higher requirements are placed on the life efficiency of the continuously variable transmission.
  • the present application proposes a "high-efficiency long-life meshing transmission continuously variable transmission", which can effectively solve the above problems, and has the characteristics of "compact, lightweight, high efficiency, long life”.
  • the specific structure is: the gear transmission is designed in combination with the CVT of the continuously variable transmission, and the gear transmission of several gears is combined with the CVT of the continuously variable transmission, and the power flow path can be smoothly switched according to the demand.
  • the ideal transmission ratio of the transmission required for the working condition is the gear ratio transmission ratio
  • the power flow path preferentially transmits power with the gear
  • the ideal transmission ratio required for the current working condition cannot match the gear gear ratio
  • the power flow path is changed to the transmission power of the continuously variable transmission, so that no power interruption can be achieved in the entire working range of the transmission, and the speed ratio range of the continuously variable transmission can be designed to be small, and only needs to satisfy the adjacent two gears.
  • the speed ratio between the two can be achieved, and the volumetric weight is greatly reduced.
  • FIG. 1 Schematic diagram of the CCT meshing drive continuously variable transmission assembly mechanism
  • FIG. 10 Schematic diagram of the shift logic explanation mechanism of the CCT meshing transmission continuously variable transmission
  • Figure 11 ⁇ 12 The direct file is not the most up-to-date CCT design mechanism and the schematic diagram of the shift logic explanation mechanism.
  • FIG. 13 Schematic diagram of CCT central CCT assembly
  • FIG. 14-21 Schematic diagram of CCT shift logic explanation mechanism with CVT neutral gear
  • Figure 22-23 Schematic diagram of the compact CCT meshing drive continuously variable transmission assembly mechanism
  • FIG. 24 Schematic of the CVT front-mounted compact CCT assembly
  • Figure 25-29 Schematic diagram of the double intermediate shaft cyclic shift type CCT shift logic explanation mechanism
  • FIG. 30-35 Schematic diagram of the CCT second-class shift logic explanation mechanism
  • Figure 36 Schematic diagram of the elastic return coupling
  • Figure 39 to 40 Schematic diagram of the transversely-predicted CCT meshing transmission continuously variable transmission assembly mechanism
  • first and third gear synchronizer 25 continuously variable transmission belt or chain
  • FIG. 1 A schematic diagram of the CCT meshing transmission continuously variable transmission assembly mechanism is shown in Figure 1:
  • the input shaft (1) is equipped with gear input gears, and each input gear meshes with its corresponding output gear.
  • Each output gear is alternately and evenly distributed on both sides of the intermediate shaft A and the intermediate shaft B according to an even number and an odd number to form a first gear.
  • Second gear, third gear, fourth gear gear pair; reverse gear can be driven by traditional idler gear or sprocket chain drive; in this picture, 5 gears are direct gear and the most high gear; Each corresponds to a synchronizer.
  • the intermediate shaft output gear A and the intermediate shaft output gear B are attached to the output ends of the intermediate shaft A and the intermediate shaft B, and mesh with the output shaft gear 21, and the output shaft gear 21 outputs power through the output shaft 24.
  • the intermediate shaft B are respectively mounted with the CVT continuously variable transmission cone set A, the cone set B, the cone set A, the cone set B through the continuously variable transmission belt or chain 25 power.
  • a plurality of elastic return couplings 14 are provided on the transmission shaft, and a stabilizer (with elastic reset function) 20 is provided.
  • the purpose of the elastic reset coupling 14 is to make the synchronizer sleeve close to the air when combined with the combined teeth. Loaded, similar to the traditional transmission, the power needs to be cut off when shifting. Note: The transmission has full synchronization when shifting, and the relay of the power flow is realized by the shift of the CVT continuously variable transmission. Therefore, when the synchronizer is combined, the power is instantaneous. The flow is not here, and the rotational speed is synchronized.
  • the elastic reset coupling 14 or the stabilizer 20 can be used to obtain the no-load shift in a state where the power flow is not required to be disconnected by the clutch, that is, the shift is not required.
  • the clutch separates the power flow, which is also an advantage of the transmission.
  • the angle of rotation is: less than or equal to a meshing pitch of the synchronizer sleeve and the combined tooth, that is, the circumferential angle of the adjacent joint tooth, that is, the rotation required when the synchronizer sleeve is combined with the combined tooth The maximum angle. Note: This spring force does not have to be too large, just need to be free to elastically reset to the neutral position under no-load conditions.
  • the synchronizer basically shifts under the condition of full synchronous speed. Therefore, the synchronizer can simplify the structure. For example, the synchronizing ring can be removed and simplified directly into a combined sleeve or other structure.
  • the stabilizer A shown in 37 is composed of an elastic buffer and an overload protection zone, including: a torque input end, a damping spring, an overload protection control block, an overload protection spring, a torque output end, etc., when the torque is within a normal working allowable range. Internally, only the elastic buffer acts. If the torque exceeds the normal working allowable range, the overload protection control block is separated for safety protection.
  • an elastic buffer such as the stabilizer B shown in FIG. 38, which has a structure equivalent to an elastic damper, which is composed of a driving disc, a driven disc, and an elastic connecting member, wherein the elastic connection
  • the components can be designed as two-way shock absorption and one-way damping according to actual conditions. As shown in the figure: torque input shaft, positioning lands, two-way damper springs, torque input discs, etc.
  • the elastic cushioning damping component may be a metal spring, a non-metallic spring, a gas spring, a hydraulic spring, a hydraulic damper or the like.
  • the stabilizer has the function of elastic return coupling.
  • the stabilizer and the elastic reset coupling can be separated and set independently, or can be combined and integrated, as shown in Figure 13: The combination of the stabilizer and the cone of the reset coupling function is more compact and the force is good, and the load sharing of the continuously variable transmission is improved.
  • this stabilizer can also be considered for removal.
  • the stabilizer can also be simplified or removed.
  • the continuously variable transmission in the present application may be a conventional continuously variable transmission, or may be a movable tooth mesh type continuously variable transmission described in Patent No. 200580039668.6, or may be a variable speed power or transmission device such as a speed regulating motor or an oil pump motor.
  • the CVT function in this patent is not only a stepless speed change, but also has the function of changing the power flow path by using its shifting.
  • Figure 2 ⁇ 3 When the transmission power flow is stepless from the first gear to the CVT
  • the power flow is initially carried by the intermediate shaft output synchronizer A.
  • the intermediate shaft output synchronizer B is also in the combined state, it does not participate in the load at first.
  • the intermediate shaft B rotates slightly.
  • FIG. 10 Schematic diagram of shifting logic explanation mechanism for CCT meshing transmission continuously variable transmission
  • Figure 2 shows the first gear stage of the CCT meshing transmission continuously variable transmission.
  • the first gear synchronizer and the intermediate shaft output synchronizer A are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft A.
  • the path indicated by the two-dot chain line is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission is equal to 1, as shown in the right figure, the combined sleeve of the intermediate shaft output synchronizer B and the combined tooth speed are synchronized. Prepare for one step of stepless speed change.
  • Figure 3 shows the CCT meshing transmission continuously variable transmission from the first gear to the second gear stepless speed change process.
  • the first gear synchronizer and the intermediate shaft output synchronizer B are combined, and the transmission power flow is transmitted through the CVT continuously variable transmission.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition requirement.
  • the transmission ratio of the CVT continuously variable transmission reaches the minimum, such as As shown in the figure on the right, the speed of the intermediate shaft B reaches the maximum speed under the current gear position.
  • the combined sleeve of the second-speed synchronizer and the combined gear speed are synchronized, which is ready for the next second gear.
  • the CCT meshing transmission continuously variable transmission second gear pair works.
  • the second gear synchronizer and the intermediate shaft output synchronizer B are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft B.
  • the path indicated by the dotted line is the current power flow path.
  • the intermediate shaft A and the CVT continuously variable transmission are in the no-load state, and the CVT transmission ratio can be easily and quickly adjusted to 1, as shown in the right figure.
  • the speed of A is synchronized with the intermediate shaft B, and the combined sleeve of the intermediate shaft output synchronizer A and the combined tooth speed are synchronized to prepare for the next stepless shifting.
  • Figure 5 shows the CCT meshing transmission continuously variable transmission from the second gear to the third gear stepless speed change process.
  • the second gear synchronizer and the intermediate shaft output synchronizer A are combined, and the transmission power flow is transmitted through the CVT continuously variable transmission.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition requirement.
  • the transmission ratio of the CVT continuously variable transmission reaches the minimum, such as As shown in the figure on the right, the speed of the intermediate shaft A reaches the maximum speed under the current gear position.
  • the combination of the three-speed synchronizer and the combined tooth speed are synchronized, ready for the next three-speed.
  • the CCT meshing transmission continuously variable transmission third gear pair works.
  • the third gear synchronizer and the intermediate shaft output synchronizer A are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft A.
  • the path indicated by the dotted line is the current power flow path.
  • the intermediate shaft B and the CVT continuously variable transmission are in the no-load state, and the CVT transmission ratio can be easily and quickly adjusted to 1, as shown in the right figure.
  • B speed up to synchronize with the intermediate axis A, the combination of the intermediate shaft output synchronizer B and the combined tooth speed are prepared for the next stepless speed change.
  • Figure 7 shows the CCT meshing transmission continuously variable transmission from the third gear to the fourth gear stepless speed change process.
  • the third gear synchronizer and the intermediate shaft output synchronizer B are combined, and the transmission power flow is transmitted through the CVT continuously variable transmission.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition requirement.
  • the transmission ratio of the CVT continuously variable transmission reaches the minimum, such as As shown in the figure on the right, the speed of the intermediate shaft B reaches the maximum speed under the current gear position.
  • the combination of the four-speed synchronizer and the combined tooth speed are synchronized, so that the fourth gear is ready for the next step.
  • the CCT meshing transmission continuously variable transmission four-speed gear pair works.
  • the fourth-speed synchronizer and the intermediate-shaft output synchronizer B are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft B.
  • the path indicated by the dotted line is the current power flow path.
  • the intermediate shaft A and the CVT continuously variable transmission are in the no-load state, and the CVT transmission ratio can be easily and quickly adjusted to 1, as shown in the right figure.
  • the speed of A is synchronized with the intermediate shaft B, and the combined sleeve of the intermediate shaft output synchronizer A and the combined tooth speed are synchronized to prepare for the next stepless shifting.
  • Figure 9 shows the CCT meshing drive continuously variable transmission from four-speed to five-speed stepless speed change process.
  • the four-speed synchronizer and the intermediate shaft output synchronizer A are combined, and the transmission power flow is transmitted through the CVT continuously variable transmission.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition requirement.
  • the CCT meshing transmission continuously variable transmission operates in the fifth gear (direct gear).
  • the fifth gear (direct gear) synchronizer is combined, and the transmission power flow is directly transmitted through the input shaft 1 and the output shaft 24, in the drawing.
  • the path indicated by the two-dot chain line is the current power flow path.
  • all transmission components of the transmission are in an idle state, and the transmission efficiency is close to 100%.
  • Figure 11 ⁇ 12 The direct file is not the most up-to-date CCT design mechanism and the schematic diagram of the shift logic explanation mechanism.
  • the direct gear is not the highest gear, the design under this condition is shown in Figure 11, 6 gear is overspeed gear, its gear ratio is less than 1, in order to meet the stepless from the direct gear to the overspeed gear
  • the output gears must be grouped into two groups, such as a split output shaft gear A, a split output shaft gear B, and a separate output shaft synchronizer 27 is added between them as shown.
  • Figure 11 shows the CCT meshing transmission continuously variable transmission from the fifth gear (direct gear) to the sixth gear stepless shifting process.
  • the five gear (direct gear) synchronizer, the intermediate shaft output synchronizer A, the intermediate shaft output synchronizer In combination B, the split output shaft synchronizer 27 is disconnected, and the transmission power flow is transmitted through the CVT continuously variable transmission.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission of the CVT continuously variable transmission The ratio can be changed steplessly according to the current working condition.
  • the transmission ratio of the CVT continuously variable transmission reaches the minimum, as shown in the right figure, the intermediate shaft A speed reaches the maximum speed under the current gear position, and the six-speed synchronizer is combined. And combined with the tooth speed synchronization, ready for the next six gears.
  • the six-speed gear pair of the CCT meshing transmission continuously variable transmission works.
  • the six-speed synchronizer and the intermediate shaft output synchronizer A are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft A.
  • the path indicated by the dotted line is the current power flow path. Note: In order to ensure deceleration and downshift at any time, the CVT transmission ratio cannot be restored to 1, but keep the minimum value as shown in the figure on the right.
  • the five-speed (direct-speed) synchronizer and the intermediate-axis output synchronizer B are both Keep the joint sleeve and the joint tooth synchronous, the split output shaft synchronizer 27 is disconnected, or: the five-speed (direct-speed) synchronizer and the intermediate-shaft output synchronizer B can be combined to select one for the deceleration and downshift at any time. Ready.
  • FIG. 13 Schematic diagram of the CCT central CCT assembly.
  • the CVT CVT is placed in the middle of the multi-gear gear set and the output gear pair. It is compact and can be adapted to the needs of specific space applications.
  • the stabilizer 31 adopts an in-line structure and is integrated with the cone. The structure is compact, the force is symmetrical and uniform, and it is beneficial to improve the load sharing of the continuously variable transmission. It is also beneficial to improve the uniformity of the movable teeth and the chain teeth.
  • This in-line stabilizer 31 has the function of an elastic return coupling.
  • FIG 14-21 Schematic diagram of the CCT shift logic explanation mechanism with CVT neutral gear.
  • the time for the CVT to participate in the transmission power should be reduced as much as possible. Therefore, the gear transmission position should be increased as much as possible.
  • the parts number 54, 55, 56, 59, 60 are: the intermediate intermediate shaft output synchronizer A, the intermediate intermediate shaft output gear A
  • the median output gear, the neutral intermediate shaft output synchronizer B, the intermediate intermediate shaft output gear B, the so-called “median transmission gear set”, as its name suggests, is the intermediate value of its gear ratio equal to the CVT gear ratio for transmission in the CVT
  • the gear pair transmits power instead of the CVT to improve the transmission efficiency.
  • Figure 14 shows the first gear pair of the CCT CVT with CVT neutral gear.
  • the first gear synchronizer and the low intermediate shaft output synchronizer A are combined.
  • the transmission power flow is transmitted through the gear and the intermediate shaft A. Passing, the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission is equal to 1, as shown in the right figure, the combined sleeve of the lower intermediate shaft output synchronizer B and the combination
  • the tooth speed is synchronized to prepare for the next stepless speed change.
  • Figure 15 shows: CCT continuously variable transmission with CVT neutral gear gear from 1st gear to 1.5 gear stepless speed change process, at this time, 1st gear synchronizer, low intermediate shaft output synchronizer B combined, transmission power flow through CVT
  • the continuously variable transmission is transmitted.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition, when the CVT continuously variable transmission
  • the transmission ratio reaches the neutral position (median value, for example: 0.66), as shown in the right figure, the combination sleeve of the neutral intermediate shaft output synchronizer A and the combined tooth speed are synchronized, ready for the next 1.5th gear.
  • Figure 16 shows the 1.5-speed gear pair of the CCT CVT with CVT neutral gear.
  • the first-speed synchronizer and the neutral intermediate-shaft output synchronizer A are combined, and the transmission power flows through the gear and the intermediate shaft A.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the original neutral position is unchanged, so as to ensure the low intermediate axis.
  • the output sleeve of the output synchronizer B and the combined tooth speed are still synchronized, as shown in the figure on the right, in preparation for the CVT to participate in the work for deceleration and downshifting.
  • Figure 17 shows the CCT continuously variable transmission with CVT neutral gear gear from 1.5 to 2 infinitely variable speed.
  • the 1st synchronizer and the low intermediate shaft output synchronizer B are combined, and the transmission power flow passes through the CVT.
  • the continuously variable transmission is transmitted.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition, when the CVT continuously variable transmission
  • the transmission ratio reaches the minimum, as shown in the figure on the right
  • the speed of the intermediate shaft B reaches the maximum speed under the current gear position.
  • the combination of the two-speed synchronizer and the combined tooth speed are synchronized, so that the second gear is ready for the next step.
  • Figure 18 shows the 2nd gear pair of the CCT continuously variable transmission with the CVT neutral gear.
  • the 2nd synchronizer and the low intermediate shaft output synchronizer B are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft B. Passing, the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the intermediate shaft A and the CVT continuously variable transmission are in an idle state, and the CVT transmission ratio can be easily and quickly adjusted to 1, as shown in the right figure.
  • the intermediate shaft A is speeded up to be synchronized with the intermediate shaft B, and the coupling sleeve of the low intermediate shaft output synchronizer A and the combined tooth speed are synchronized, so as to prepare for the next stepless shifting.
  • Figure 19 shows: CCT continuously variable transmission with CVT neutral gear gear from 2nd gear to 2.5 gear stepless speed change process, at this time, 2nd gear synchronizer, low intermediate shaft output synchronizer A combined, transmission power flow through CVT
  • the continuously variable transmission is transmitted.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition, when the CVT continuously variable transmission
  • the transmission ratio reaches the neutral position (median value, for example: 0.66), as shown in the right figure, the combination sleeve of the neutral intermediate shaft output synchronizer B and the combined tooth speed are synchronized, ready for the next 2.5 gear.
  • Figure 20 shows the 2.5-speed gear pair of the CCT CVT with CVT neutral gear.
  • the 2nd synchronizer, the neutral intermediate shaft output synchronizer B combines, the transmission power flows through the gear and the intermediate shaft B.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the original neutral position is unchanged, so as to ensure the low intermediate axis.
  • the output sleeve of the output synchronizer A and the combined tooth speed are still synchronized, as shown in the right figure, in preparation for the CVT to participate in the work for deceleration and downshifting.
  • the gear position of the transmission shown in this figure can realize 9 fixed speed ratio files, which are: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 (direct file).
  • Figure 21 is a shifting logic diagram for a CCT continuously variable transmission with a CVT neutral gear through a neutral gear sub-path, that is, the power flow transmitted through the CVT can also pass through the neutral gear pair.
  • the path is continuously variable, which can match more gear ratio values and adapt to more gear shifts.
  • Figure 22-23 Schematic diagram of the compact CCT meshing drive continuously variable transmission assembly mechanism
  • the input gears of the first and second gear pairs are common, and the input gears of the third and fourth gear pairs are common, which can reduce the axial size and make the structure more compact, but because of this way, the double intermediate The center distances of the axes A and B and the input shaft and the output shaft are no longer equal. Therefore, in order to ensure equal gear ratios between the double intermediate shafts A and B and the output shaft, output gear pairs of different speed ratios must be set, such as As shown in Fig. 22, the small speed ratio output gear pair 38 and the large speed ratio output gear pair 39 are shown.
  • the CVT continuously variable transmission can set any gear ratio to suit different needs, it can also be designed as: small speed ratio output gear pair 38, large speed ratio output gear pair 39 merge in axial space.
  • the gears on the output shaft are combined and common.
  • the speed synchronization problem when the power of the gear pair and the CVT are alternated is satisfied, that is, the double intermediate shafts A and B.
  • the gear pair transmission ratio with the output shaft is not equal.
  • the intermediate shaft A rotates lower than the intermediate shaft B. It is necessary to set the CVT speed ratio not equal to 1 to meet the demand. Obviously, this condition CVT is easy to implement. This solution will make the transmission structure more compact.
  • Figure 24 Schematic diagram of the CVT front-mounted compact CCT assembly.
  • the CVT continuously variable transmission is placed at the forefront of the transmission and is compact enough to meet the needs of specific space applications.
  • This structure makes the elastic return coupling on the synchronizer have to adopt the structure of the in-line elastic resetter 40.
  • the specific structure and working principle can be referred to FIG. 36.
  • the output shaft 1 and the output shaft 24 can be set as the coaxial hole shaft combined arrangement scheme 41 as shown; in order to reduce the lateral dimension, the input and output shafts and the double intermediate shaft can be set.
  • the spatial layout is set to a triangular relationship, as shown in the image to the right.
  • Figure 25-29 Schematic diagram of the double intermediate shaft cyclic shift type CCT shift logic explanation mechanism.
  • the overall transmission chain structure layout is exactly opposite to the transmission layout described above.
  • the multi-gear gear pair is placed at the rear end, and the input is
  • the shaft gear 42, the intermediate shaft input gear A, the intermediate shaft input synchronizer A, the intermediate shaft input gear B, and the intermediate shaft input synchronizer B are disposed at the front end, and the CVT continuously variable transmission function is to change the intermediate shaft A and the intermediate shaft B rotation speed. Therefore, as long as it is disposed on the intermediate shaft A and the intermediate shaft B, it can be disposed at the front end (as shown in FIG. 25) or at the rear end.
  • Figure 25 shows the first gear step of the double countershaft cycle shifting CCT.
  • the intermediate shaft input synchronizer B (44) and the first gear synchronizer (51) are combined, and the transmission power flows through the gear and the intermediate shaft. B is transmitted.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission is equal to 1, as shown in the right figure, the intermediate shaft is input to the synchronizer A (46).
  • the combination sleeve and the combined tooth speed are synchronized to prepare for the next stepless speed change.
  • Figure 26 shows the double intermediate shaft cyclic shift type CCT from the first gear to the second gear stepless shifting process.
  • the intermediate shaft input synchronizer A (46) and the first gear synchronizer (51) are combined, and the transmission power flow passes through the CVT.
  • the continuously variable transmission is transmitted.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition, when the CVT continuously variable transmission
  • the transmission ratio reaches the minimum, as shown in the figure on the right
  • the speed of the intermediate shaft B reaches the maximum speed
  • the speed of the output shaft 24 is raised, and the combined sleeve of the second-speed synchronizer and the combined gear speed are synchronized, so that the second gear is used for the next step. Ready.
  • the double countershaft cyclic shift type CCT second gear pair works.
  • the intermediate shaft input synchronizer A (46) and the second speed synchronizer are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft A.
  • the path indicated by the two-dot chain line in the figure is the current power flow path.
  • the intermediate shaft B and the CVT continuously variable transmission are in an idle state, and the CVT transmission ratio can be easily and quickly adjusted to 1, as shown in the right figure.
  • the intermediate shaft B is decelerated to be synchronized with the intermediate shaft A, and the joint sleeve of the intermediate shaft output synchronizer B and the combined tooth speed are synchronized to prepare for the next stepless shifting.
  • Figure 28 shows the double intermediate shaft cyclic shift type CCT from the second gear to the third gear stepless shifting process.
  • the intermediate shaft input synchronizer B and the second gear synchronizer are combined, and the transmission power flow is transmitted through the CVT continuously variable transmission.
  • the path indicated by the two-dot chain line in the drawing is the current power flow path.
  • the transmission ratio of the CVT continuously variable transmission can be steplessly changed according to the current working condition requirement.
  • the double countershaft cyclic shift type CCT three-speed gear pair works.
  • the intermediate shaft input synchronizer B and the third-speed synchronizer are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft B.
  • the path indicated by the two-dot chain line is the current power flow path.
  • the intermediate shaft A and the CVT continuously variable transmission can adjust the CVT transmission ratio to 1 easily and quickly, as shown in the right figure.
  • the shaft A is decelerated to be synchronized with the intermediate shaft B, and the coupling sleeve of the intermediate shaft output synchronizer A and the combined tooth speed are synchronized to prepare for the next stepless shifting.
  • FIG. 30-35 Schematic diagram of the CCT second-type shift logic explanation mechanism.
  • the transmission is basically the same as the transmission described in Fig. 2, except that the shift logic program is different, but the same stepless shifting effect can be achieved.
  • the specific analysis is as follows:
  • the path through which the power flow passes through the CVT is indicated by a two-dot chain line, and the path through which the power flow passes through the gear or direct path is indicated by a chain line.
  • Figure 30 shows the CCT first gear pair working state.
  • the first gear synchronizer and the intermediate shaft output synchronizer A are combined, and the transmission power flow is transmitted through the gear and the intermediate shaft A, as indicated by the dotted line in the drawing.
  • the path is the current power flow path.
  • the initial state transmission of the CVT continuously variable transmission is as shown in the right figure, the intermediate shaft B speed reaches the maximum speed under the current gear position, and the combined sleeve of the second speed synchronizer and the combined tooth speed are synchronized.
  • the second gear can be put into the waiting state in advance, and the path indicated by the two-dot chain line in the drawing is the CVT path in which the current power flow is simultaneously ready to be turned on.
  • Figure 31 shows the CCT from the first gear to the second gear stepless speed change process. Since the combined sleeve of the second gear synchronizer and the combined tooth speed have been synchronized in advance in the first gear, the second gear synchronizer can be combined directly or in advance. And disconnect the first gear synchronizer, the transmission power flow is transmitted through the CVT continuously variable transmission that has already been turned on, as shown by the two-dot chain line in the drawing. At this time, the transmission ratio of the CVT continuously variable transmission can be based on the current The working condition demand changes steplessly.
  • Figure 32 shows the CCT from the second gear to the third gear stepless speed change process, disconnecting the intermediate shaft output synchronizer B, so that the CVT continuously variable transmission continues to increase speed, and the power flow path at this time is the path indicated by the double dotted line.
  • the CVT transmission ratio reaches the minimum, as shown in the figure on the right, the combination of the three-speed synchronizer and the combined tooth speed are synchronized. After the combination, the power flow path is changed to be driven by the third gear pair, as shown by the dotted line. The path shown.
  • Figure 33 shows the CCT from the third gear to the fourth gear stepless speed change preparation process.
  • the third gear synchronizer and the intermediate shaft output synchronizer A are combined to disconnect the second gear synchronizer B, the intermediate shaft B and the CVT continuously variable transmission.
  • the CVT transmission ratio can be easily and quickly restored to the initial position.
  • the CCT is ready for the third-speed to fourth-speed stepless speed change.
  • the current gear position is still the third gear gear pair working state.
  • the rotation speed of the intermediate shaft B reaches the maximum speed under the current gear position.
  • the combination of the four-speed synchronizer and the combined tooth speed are synchronized, and the four-speed advance can be entered into the waiting state.
  • the path indicated by the two-dot chain line in the drawing is the current
  • the power flow is simultaneously prepared for the CVT path to be turned on.
  • Figure 34 shows the CCT from the third-speed to the fourth-speed stepless speed change process. Since the combination of the four-speed synchronizer and the combined tooth speed have been synchronized in advance in the third gear, the four-speed synchronizer can be combined directly or in advance. And disconnect the third-speed synchronizer, the transmission power flow is transmitted through the CVT continuously variable transmission that is ready to be turned on, as shown by the two-dot chain line in the figure. At this time, the transmission ratio of the CVT continuously variable transmission can be based on the current The working condition demand changes steplessly.
  • Figure 35 shows the CCT from the fourth gear to the fifth gear (direct gear) stepless speed change process, disconnecting the intermediate shaft output synchronizer B, so that the CVT continuously variable transmission continues to increase speed, the power flow path at this time is a two-dot chain line
  • the combination of the five-speed (direct-speed) synchronizer and the combined tooth speed are synchronized.
  • the transmission power flow is directly transmitted through the input shaft and the output shaft.
  • the dotted line shown in the figure at this time, except for the input shaft and the output shaft, all transmission components of the transmission are in no-load state, and the transmission efficiency is close to 100%.
  • Output half shaft 85 shortening the number of transmission chain stages and improving economy.
  • you need to enlarge the center-to-center distance of the gearbox input and output shafts you can also increase the number of gear stages.
  • the transmission also designs a direct gear.
  • the direct synchronizer 83 When the direct synchronizer 83 is combined, the power flow path is: the input shaft 84, the direct drive small sprocket 82, the transmission chain 87, the output large sprocket 88, and the engine.
  • the output power is to drive the wheel, and the whole transmission chain has only one stage, and the transmission efficiency is high.
  • the direct gear is the overspeed gear, which satisfies the best economy and sportiness.
  • the direct-drive small sprocket of the above embodiment may be a direct-drive small pulley
  • the transmission chain may be a transmission belt
  • the output large sprocket may be an output large pulley

Abstract

L'invention concerne une transmission à variation continue-transmission par engrènement, qui se rapporte au domaine technique de la transmission mécanique et de la conception et de la fabrication de transmissions à variation continue, et qui est conçue par combinaison d'une transmission à engrenages et d'une transmission à variation continue et par combinaison organique d'une transmission à engrenages ayant une pluralité d'engrenages et la transmission à variation continue, de sorte que le circuit d'énergie de la transmission combinée peut être commuté sans à-coups en fonction des besoins ; lorsque le rapport de transmission idéal pour la transmission qui est nécessaire pour les conditions de fonctionnement actuelles est un rapport de transmission à engrenages, le circuit d'énergie de la transmission à variation continue-transmission à engrènement utilise de préférence des engrenages pour transmettre l'énergie ; et lorsque le rapport de transmission idéal pour la transmission qui est nécessaire pour les conditions de fonctionnement actuelles n'est pas adapté au rapport de transmission à engrenages, le circuit d'énergie de la transmission à engrenages passe à la transmission à variation continue pour transmettre l'énergie, ce qui permet d'obtenir des caractéristiques telles que « compacité, légèreté, rendement élevé et longue durée de vie ».
PCT/CN2019/070240 2018-01-04 2019-01-03 Transmission à variation continue-transmission par engrènement à haute efficacité et longue durée de vie WO2019134663A1 (fr)

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CN201810007008.9A CN110005778A (zh) 2018-01-04 2018-01-04 高效率长寿命啮合传动无级变速器
CN201810007008.9 2018-01-04

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CN113187860B (zh) * 2021-05-18 2022-06-07 璞灵(上海)汽车技术有限公司 交替功率流无级变速区段自动换段系统及方法

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EP1479942A1 (fr) * 2003-05-21 2004-11-24 Ford Global Technologies, LLC Transmission à variation continue pour véhicules automobiles
CN200999844Y (zh) * 2007-01-22 2008-01-02 南京理工大学 功率分流式无级变速器
CN101463893A (zh) * 2009-01-14 2009-06-24 奇瑞汽车股份有限公司 功率分流式cvt变速器
CN202937755U (zh) * 2012-10-19 2013-05-15 联合汽车电子有限公司 混合式无级变速装置
CN103453103A (zh) * 2013-05-11 2013-12-18 王亚 有级过渡式无级变速器
CN103527736A (zh) * 2013-10-23 2014-01-22 王亚 有级过渡式无级变速传动方案
CN204344851U (zh) * 2014-11-21 2015-05-20 顺德职业技术学院 带式无级变速器无级变速传动装置
WO2017201355A1 (fr) * 2016-05-19 2017-11-23 Dana Limited Configurations de groupe motopropulseur planétaire dotées d'une transmission à variation continue munie d'un variateur à billes, utilisées comme répartition de puissance

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