WO2020020136A1 - 一种三轴调速的锥盘式无级变速器 - Google Patents

一种三轴调速的锥盘式无级变速器 Download PDF

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Publication number
WO2020020136A1
WO2020020136A1 PCT/CN2019/097241 CN2019097241W WO2020020136A1 WO 2020020136 A1 WO2020020136 A1 WO 2020020136A1 CN 2019097241 W CN2019097241 W CN 2019097241W WO 2020020136 A1 WO2020020136 A1 WO 2020020136A1
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Prior art keywords
shaft
cone
speed
driven
iii
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PCT/CN2019/097241
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English (en)
French (fr)
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程乃士
程越
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重庆宗申无级变速传动有限公司
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Publication of WO2020020136A1 publication Critical patent/WO2020020136A1/zh

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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
    • 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
    • F16H9/10—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 provided with radially-actuatable elements carrying the belt
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • 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
    • F16H9/18—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 only one flange of each pulley being adjustable

Definitions

  • the invention belongs to the field of power mechanical transmission, and particularly relates to a three-shaft speed regulating cone-disk type continuously variable transmission.
  • the main system sub-functions of the cone-disk continuously variable transmission are pressurization and speed regulation.
  • the speed regulation function is completed by the speed regulation system.
  • a typical speed regulation system is disclosed in the patent CN103867678 "A Cone Disc Continuously Variable Transmission".
  • the speed regulation system consists of a ball screw structure mounted on a cone disk shaft and a moving screw disk. Institutional realization. Due to its good stiffness, this speed governing mechanism is well used in applications with high torque, such as off-road vehicles. However, for small and medium-sized vehicles and other low-torque applications, the problems of higher cost and poor heat dissipation of this speed regulation mechanism are more prominent. Especially for small and medium-sized vehicles with small installation space and high cost requirements, the contradiction of cost, weight and size is even more obvious.
  • CN106641143 Cone-disk type continuously variable transmission speed regulating mechanism and the cone-disk type continuously variable transmission
  • CN105972179 Cone-disk type continuously variable transmission and its speed-adjusting mechanism
  • the object of the present invention is to propose an electromechanical control cone-disk type continuously variable transmission that is suitable for installation space, especially for axial installation space that is relatively sensitive to vehicles, and has high requirements on cost, weight, efficiency, and heat dissipation.
  • a three-axis speed-adjusting cone-disk type continuously variable transmission includes a driving shaft, a driven shaft, and a speed regulating mechanism.
  • the driving shaft is provided with a driving cone disk group
  • the driven shaft is provided with a driven cone disk group.
  • the disk group and the driven cone disk group are connected and driven by a flexible transmission element held by the two, and the axes of the driving shaft and the driven shaft are parallel to each other.
  • the active cone disk group includes an active cone disk and an active fixed cone disk.
  • the driven cone plate group includes a driven cone plate and a driven fixed cone plate, and the speed regulating mechanism is used to drive the active cone plate of the active cone plate group and the driven cone plate shaft of the driven cone plate group To move.
  • the speed regulating mechanism includes one or more driving machines, a speed regulating I shaft, a speed regulating II shaft, a speed regulating III shaft, a first sprocket set, a second sprocket set, a pressure pushing plate I, and a pressure pushing Plate II; the driver directly or indirectly drives the speed regulating I shaft, the speed regulating II shaft, and / or the speed regulating III shaft, and the first sprocket set includes a chain I, a sprocket I, and a sprocket IIIa, and the first The two sprocket sets include a chain II, a sprocket II, and a sprocket IIIb.
  • the sprocket IIIa and the sprocket IIIb are respectively disposed at both ends of the speed regulating III shaft.
  • the sprocket I is disposed at one end of the speed regulating I shaft.
  • II is provided at one end of the speed-adjusting II shaft, and the speed-adjusting I shaft is provided with a spiral structure I, the spiral structure I includes a nut I;
  • the speed-adjusting II shaft is provided with a spiral structure II, and the spiral structure II includes There is a nut II;
  • the speed regulating III shaft is provided with a spiral structure III, and the spiral structure III includes a nut III.
  • the chain I of the first sprocket set is connected to the speed regulating III shaft and the speed regulating I shaft through the sprocket I and the sprocket IIIa
  • the chain II of the second sprocket set is connected to the sprocket II and the sprocket IIIb.
  • the nut III is sleeved on the speed regulating III shaft in the form of a spiral pair, and the pressure push plate I and the pressure push plate II are respectively located at both ends of the nut III It is connected to nut III.
  • One end of the pressure push plate I is connected to one side of the nut III, and the other end is connected to the nut I; one end of the pressure push plate II is connected to the other side of the nut III, and the other end is connected to the nut II;
  • the plate I has a first working portion that is pushed against the driven cone, and the pressure pushing plate II has a second working portion that is pushed against the driven cone; the first working portion and the pushed driving cone
  • a bearing is arranged between the discs, and the inner ring of the bearing is in contact with the driving cone.
  • the outer ring of the bearing is directly or indirectly in contact with the first working part; the second working part is in contact with the driven follower which is pushed.
  • a bearing is provided between the cones, the inner ring of the bearing is in contact with the driven cone, and the outer ring of the bearing is in direct or indirect contact with the second working portion.
  • the speed regulating I shaft, speed regulating II shaft and speed regulating III shaft are respectively connected to the housing through bearings capable of bearing axial thrust, and the bearings capable of bearing axial thrust can enable speed regulating I shaft, speed regulating II shaft and
  • the speed-adjusting III axis only rotates but cannot move, and the speed-adjusting I-axis, speed-adjusting II-axis and speed-adjusting III-axis, and the axes of the driving shaft and the driven shaft all remain parallel.
  • the ratio of the number of teeth of the sprocket I to the sprocket IIIa is i 1
  • the ratio of the number of teeth of the sprocket IIIb to the sprocket II is i 2
  • the lead of the nut I is L 1
  • the lead of the nut II is L 2
  • the axes of the speed-regulating I axis, the speed-regulating III axis and the driving shaft are substantially in the same plane, and the axes of the speed-regulating II axis, the speed-regulating III axis and the driven shaft are substantially in the same plane.
  • the spiral structure I, the spiral structure II, and / or the spiral structure III is a rolling spiral structure or a sliding spiral structure.
  • the driver indirectly drives the speed-regulating I axis, speed-regulating II axis, and / or speed-regulating III axis, and the indirect driving is specifically driven by a worm gear reduction mechanism or a planetary reduction mechanism or a gear reduction mechanism.
  • the bearings on one side of the active fixed cone and the driven fixed cone are bearings capable of bearing axial thrust.
  • a bearing is provided between the first working part and the driven active cone, and the inner ring of the bearing is in contact with the active cone, and the outer ring of the bearing is indirectly in contact with the first working part.
  • a bearing is provided between the second working part and the driven driven cone, and the inner ring of the bearing is in contact with the driven cone; the outer ring of the bearing is indirectly in contact with the second working part; , Where the indirect connection is indirect by means of spherical washers.
  • At least one of the driving shaft and the driven shaft is provided with a conical disc pressurizing mechanism, and the conical disc pressurizing mechanism is configured to apply an axial pressure to the active fixed cone and / or the driven fixed cone .
  • a specific setting method for replacing the foregoing working part and the moving cone is that a bearing is provided between the first working part and the pushed active cone, and an outer ring of the bearing is in contact with the active cone.
  • the inner ring is directly or indirectly in contact with the first working part;
  • a bearing is provided between the second working part and the driven driven cone, and the outer ring of the bearing is in contact with the driven cone.
  • the inner ring of the bearing is directly or indirectly in contact with the second working portion.
  • the spiral structure III includes one or more nuts III.
  • the setting of three speed regulating shafts allows the size of the speed regulating shaft itself to be greatly reduced, and the setting position of the reduced size speed regulating shaft can be It is an idle position between the related parts of the driving shaft and the driven shaft (caulking method), so that the overall structure of the continuously variable transmission is more compact and lighter.
  • the reduced size governing shaft can be used with standard parts, which reduces the cost of the continuously variable transmission as a whole.
  • the combination of the pressurized push plate and the small ball screw structure makes the key load bearing no longer enclosed in a confined space and can be exposed to splashed lubricating oil, ensuring the bearing's lubrication and heat dissipation.
  • the combination of the pressurized push plate and the small ball screw structure is more compact in the axial direction than the ball screw structure set on the cone disk shaft, and it can better fit the most tight axial installation space of small and medium vehicles. .
  • the entire CVT adopts a motor in conjunction with a mechanical speed regulation system to regulate the speed and mechanical pressurization system, thereby avoiding energy-consuming and high-cost hydraulic control systems, reducing costs and improving transmission efficiency.
  • the entire CVT adopts an electromechanical control system. It is not necessary to equip the hydraulic system with an electronic oil pump and the idle speed required by the hydraulic system. This makes it more suitable for new energy vehicles that require pure electric driving modes, including pure electric vehicles. Hybrid cars, etc.
  • FIG. 1 is a schematic structural cross-sectional view of a three-axis speed-adjusting cone-disk type continuously variable transmission according to an embodiment of the present invention (Example 1 or 3).
  • FIG. 2 is a three-dimensional structure diagram of a three-axis speed-adjusting cone-disk type continuously variable transmission according to an embodiment (Example 1) of the present invention.
  • FIG. 3 is a three-dimensional exploded schematic view of a three-axis speed-adjusting cone-disk type continuously variable transmission according to an embodiment (Example 1) of the present invention.
  • a three-axis speed-adjusting cone-disk type continuously variable transmission includes a driving shaft, a driven shaft, and a speed regulating mechanism.
  • a driving cone disk group is provided on the driving shaft, and a driven shaft is provided on the driven shaft.
  • the driven cone plate group, the driving cone plate group and the driven cone plate group are connected and driven by flexible transmission elements held by the two, and the axes of the driving shaft and the driven shaft are parallel to each other.
  • the driving cone plate group includes an active A cone disk and an active fixed cone disk
  • the driven cone disk group includes a driven cone disk and a driven fixed cone disk
  • the speed regulating mechanism is used to drive the active cone disk and the driven cone disk of the active cone disk group
  • the group of driven cones moves axially.
  • the speed regulating mechanism includes a driving machine, a speed regulating I shaft, a speed regulating II shaft, a speed regulating III shaft, a first sprocket set, a second sprocket set, a pressure pushing plate I, and a pressure pushing plate II;
  • the driving machine directly or indirectly drives the speed regulating I shaft, the speed regulating II shaft and / or the speed regulating III shaft
  • the first sprocket set includes a chain I, a sprocket I and a sprocket IIIa
  • the second sprocket The group includes a chain II, a sprocket II, and a sprocket IIIb.
  • the sprocket IIIa and the sprocket IIIb are respectively disposed at both ends of the speed regulating III shaft, the sprocket I is disposed at one end of the speed regulating I shaft, and the sprocket II is disposed at One end of a speed-adjusting II shaft, the speed-adjusting I shaft is provided with a spiral structure I, the spiral structure I includes a nut I; the speed-adjusting II shaft is provided with a spiral structure II, and the spiral structure II includes a nut II The speed-regulating III shaft is provided with a spiral structure III, and the spiral structure III includes a nut III.
  • the chain I of the first sprocket set is connected to the speed regulating III shaft and the speed regulating I shaft through the sprocket I and the sprocket IIIa
  • the chain II of the second sprocket set is connected to the sprocket II and the sprocket IIIb.
  • the nut III is sleeved on the speed regulating III shaft in the form of a spiral pair, and the pressure push plate I and the pressure push plate II are respectively located at both ends of the nut III It is connected to nut III.
  • One end of the pressure push plate I is connected to one side of the nut III, and the other end is connected to the nut I; one end of the pressure push plate II is connected to the other side of the nut III, and the other end is connected to the nut II;
  • the plate I has a first working portion that is pushed against the driven cone, and the pressure pushing plate II has a second working portion that is pushed against the driven cone; the first working portion and the pushed driving cone
  • a bearing is arranged between the discs, and the inner ring of the bearing is in contact with the driving cone, and the outer ring of the bearing is indirectly in contact with the first working part; the second working part is pressed with the driven cone There is a bearing therebetween.
  • the inner ring of the bearing is in contact with the driven cone and the outer ring of the bearing is indirectly in contact with the second working part, wherein the indirect connection is indirect using a spherical washer.
  • the speed regulating I shaft, speed regulating II shaft and speed regulating III shaft are respectively connected to the housing through bearings capable of bearing axial thrust, and the bearings capable of bearing axial thrust can enable speed regulating I shaft, speed regulating II shaft and
  • the speed-adjusting III axis only rotates but cannot move, and the speed-adjusting I-axis, speed-adjusting II-axis and speed-adjusting III-axis, and the axes of the driving shaft and the driven shaft all remain parallel.
  • the ratio of the number of teeth of the sprocket I to the sprocket IIIa is i 1
  • the ratio of the number of teeth of the sprocket IIIb to the sprocket II is i 2
  • the lead of the nut I is L 1
  • the lead of the nut II is L 2
  • the nut III The lead is L 3
  • the axes of the speed-regulating I axis, the speed-regulating III axis, and the driving axis are substantially in the same plane, and the axes of the speed-regulating II axis, the speed-regulating III axis, and the driven axis are substantially in the same plane.
  • the so-called “basic” means to stay in the same plane within the range of conventional errors.
  • spiral structure I, spiral structure II, and spiral structure III are rolling spiral structures.
  • the driving machine indirectly drives the speed-regulating III shaft, and the indirect driving is specifically driven by a worm gear reduction mechanism.
  • the bearings on one side of the active fixed cone and the driven fixed cone are bearings capable of withstanding axial thrust.
  • the drive shaft and the driven shaft are provided with a conical disc pressurizing mechanism, and the conical disc pressurizing mechanism is used to apply an axial pressure to the active fixed cone and the driven fixed cone.
  • the spiral structure III includes a nut III.
  • a three-axis speed-adjusting cone-disk type continuously variable transmission includes a driving shaft, a driven shaft, and a speed regulating mechanism.
  • a driving cone disk group is provided on the driving shaft, and a driven shaft is provided on the driven shaft.
  • the driven cone plate group, the driving cone plate group and the driven cone plate group are connected and driven by flexible transmission elements held by the two, and the axes of the driving shaft and the driven shaft are parallel to each other.
  • the driving cone plate group includes an active A cone disk and an active fixed cone disk
  • the driven cone disk group includes a driven cone disk and a driven fixed cone disk
  • the speed regulating mechanism is used to drive the active cone disk and the driven cone disk of the active cone disk group
  • the group of driven cones moves axially.
  • the speed regulating mechanism includes a driving machine, a speed regulating I shaft, a speed regulating II shaft, a speed regulating III shaft, a first sprocket set, a second sprocket set, a pressure pushing plate I, and a pressure pushing plate II;
  • the driving machine directly or indirectly drives the speed regulating I shaft, the speed regulating II shaft and / or the speed regulating III shaft
  • the first sprocket set includes a chain I, a sprocket I and a sprocket IIIa
  • the second sprocket The group includes a chain II, a sprocket II, and a sprocket IIIb.
  • the sprocket IIIa and the sprocket IIIb are respectively disposed at both ends of the speed regulating III shaft, the sprocket I is disposed at one end of the speed regulating I shaft, and the sprocket II is disposed at One end of a speed-adjusting II shaft, the speed-adjusting I shaft is provided with a spiral structure I, the spiral structure I includes a nut I; the speed-adjusting II shaft is provided with a spiral structure II, and the spiral structure II includes a nut II The speed-regulating III shaft is provided with a spiral structure III, and the spiral structure III includes a nut III.
  • the chain I of the first sprocket set is connected to the speed regulating III shaft and the speed regulating I shaft through the sprocket I and the sprocket IIIa
  • the chain II of the second sprocket set is connected to the sprocket II and the sprocket IIIb.
  • the nut III is sleeved on the speed regulating III shaft in the form of a spiral pair, and the pressure push plate I and the pressure push plate II are respectively located at both ends of the nut III It is connected to nut III.
  • One end of the pressure push plate I is connected to one side of the nut III, and the other end is connected to the nut I; one end of the pressure push plate II is connected to the other side of the nut III, and the other end is connected to the nut II;
  • the plate I has a first working portion that is pushed against the driven cone, and the pressure pushing plate II has a second working portion that is pushed against the driven cone; the first working portion and the pushed driving cone
  • a bearing is arranged between the discs, and the inner ring of the bearing is in contact with the driving cone, and the outer ring of the bearing is indirectly in contact with the first working part; the second working part is pressed with the driven cone There is a bearing therebetween.
  • the inner ring of the bearing is in contact with the driven cone and the outer ring of the bearing is indirectly in contact with the second working part, wherein the indirect connection is indirect using a spherical washer.
  • the speed regulating I shaft, speed regulating II shaft and speed regulating III shaft are respectively connected to the housing through bearings capable of bearing axial thrust, and the bearings capable of bearing axial thrust can enable speed regulating I shaft, speed regulating II shaft and
  • the speed-adjusting III axis only rotates but cannot move, and the speed-adjusting I-axis, speed-adjusting II-axis and speed-adjusting III-axis, and the axes of the driving shaft and the driven shaft all remain parallel.
  • the ratio of the number of teeth of the sprocket I to the sprocket IIIa is i 1
  • the ratio of the number of teeth of the sprocket IIIb to the sprocket II is i 2
  • the lead of the nut I is L 1
  • the lead of the nut II is L 2
  • the nut III The lead is L 3
  • the axes of the speed-regulating I axis, the speed-regulating III axis, and the driving axis are substantially in the same plane, and the axes of the speed-regulating II axis, the speed-regulating III axis, and the driven axis are substantially in the same plane.
  • the so-called “basic” means to stay in the same plane within the range of conventional errors.
  • the distance between the speed regulating III axis and the axis of the driving shaft and the distance between the speed regulating III axis and the axis of the driven shaft are not equal; or the distance between the speed regulating III axis and the axis of the driving shaft and the speed regulating III axis and the driven shaft
  • the distances between the axes are equal, but the distances between the master axis and the governor I axis and the slave axis and the governor II axis are not equal.
  • the “vertex connection line” of the shaft and the speed-adjusting I-axis axis constitutes a regular triangle.
  • spiral structure I, spiral structure II, and spiral structure III are rolling spiral structures.
  • the driving machine indirectly drives the speed-regulating III shaft, and the indirect driving is specifically driven by a worm gear reduction mechanism.
  • the bearings on one side of the active fixed cone and the driven fixed cone are bearings capable of withstanding axial thrust.
  • the drive shaft and the driven shaft are provided with a conical disc pressurizing mechanism, and the conical disc pressurizing mechanism is used to apply an axial pressure to the active fixed cone and the driven fixed cone.
  • the spiral structure III includes a nut III.
  • a three-axis speed-adjusting cone-disk type continuously variable transmission includes a driving shaft, a driven shaft, and a speed regulating mechanism.
  • the driving shaft is provided with a driving cone disk group
  • the driven shaft is provided with a driven cone disk group.
  • the disk group and the driven cone disk group are connected and driven by a flexible transmission element held by the two, and the axes of the driving shaft and the driven shaft are parallel to each other.
  • the active cone disk group includes an active cone disk and an active fixed cone disk.
  • the driven cone plate group includes a driven cone plate and a driven fixed cone plate, and the speed regulating mechanism is used to drive the active cone plate of the active cone plate group and the driven cone plate shaft of the driven cone plate group To move.
  • the speed regulating mechanism includes 2 or 3 driving machines, a speed regulating I shaft, a speed regulating II shaft, a speed regulating III shaft, a first sprocket set, a second sprocket set, a pressure push plate I, and a pressure push Plate II; the driver directly or indirectly drives the speed regulating I shaft, the speed regulating II shaft, and / or the speed regulating III shaft, and the first sprocket set includes a chain I, a sprocket I, and a sprocket IIIa, and the first The two sprocket sets include a chain II, a sprocket II, and a sprocket IIIb.
  • the sprocket IIIa and the sprocket IIIb are respectively disposed at both ends of the speed regulating III shaft.
  • the sprocket I is disposed at one end of the speed regulating I shaft.
  • II is provided at one end of the speed-adjusting II shaft, and the speed-adjusting I shaft is provided with a spiral structure I, the spiral structure I includes a nut I;
  • the speed-adjusting II shaft is provided with a spiral structure II, and the spiral structure II includes There is a nut II;
  • the speed regulating III shaft is provided with a spiral structure III, and the spiral structure III includes a nut III.
  • the chain I of the first sprocket set is connected to the speed regulating III shaft and the speed regulating I shaft through the sprocket I and the sprocket IIIa
  • the chain II of the second sprocket set is connected to the sprocket II and the sprocket IIIb.
  • the nut III is sleeved on the speed regulating III shaft in the form of a spiral pair, and the pressure push plate I and the pressure push plate II are respectively located at both ends of the nut III It is connected to nut III.
  • One end of the pressure push plate I is connected to one side of the nut III, and the other end is connected to the nut I; one end of the pressure push plate II is connected to the other side of the nut III, and the other end is connected to the nut II;
  • the plate I has a first working portion that is pushed against the driven cone, and the pressure pushing plate II has a second working portion that is pushed against the driven cone;
  • the first working portion and the pushed driving cone A bearing is provided between the discs, and the inner ring of the bearing is in contact with the driving cone, and the other side is in contact with the first working part through a washer;
  • the second working part is in contact with the driven cone A bearing is provided in between, and the inner ring of the bearing is in contact with the driven cone and the other side is in contact with the second working portion through a washer.
  • the speed regulating I shaft, speed regulating II shaft and speed regulating III shaft are respectively connected to the housing through bearings capable of bearing axial thrust, and the bearings capable of bearing axial thrust can enable speed regulating I shaft, speed regulating II shaft and
  • the speed-adjusting III axis only rotates but cannot move, and the speed-adjusting I-axis, speed-adjusting II-axis and speed-adjusting III-axis, and the axes of the driving shaft and the driven shaft all remain parallel.
  • the ratio of the number of teeth of the sprocket I to the sprocket IIIa is i 1
  • the ratio of the number of teeth of the sprocket IIIb to the sprocket II is i 2
  • the lead of the nut I is L 1
  • the lead of the nut II is L 2
  • the axes of the speed-regulating I-axis, speed-regulating II-axis, speed-regulating III-axis, driving shaft and driven shaft are substantially in the same plane.
  • the so-called “basic” means to stay in the same plane within the range of conventional errors.
  • spiral structure I, spiral structure II, or spiral structure III is a rolling spiral structure or a sliding spiral structure. Different spiral structures use different rolling or sliding spiral structures, which are not completely consistent.
  • the two or three drivers are selected to indirectly drive the speed regulating I axis, the speed regulating II axis, and the speed regulating III axis, and the indirect driving is specifically through the planet The reduction mechanism is driven.
  • the driving machines respectively connected to the speed-regulating I axis, the speed-regulating II axis and the speed-regulating III axis are transmitted to the speed-regulating III axis through the planetary reduction mechanism and the chain transmission, and the rotation speeds are equal.
  • the bearings on one side of the active fixed cone and the driven fixed cone are bearings capable of withstanding axial thrust.
  • the driving shaft is provided with a cone-disk pressure mechanism, and the cone-disk pressure mechanism is used to apply an axial pressure to the active fixed cone.
  • the spiral structure III includes two nuts III, which are arranged in series.

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Abstract

一种三轴调速的锥盘式无级变速器，包括主动轴、从动轴和调速机构。通过对调速机构进行改进，尤其是对调速机构中调速轴的数量、位置以及与相关部件连接方式的改进，使得该锥盘式无级变速器结构更加紧凑，散热及润滑得到改善，效率得到提高，成本得到降低，使用寿命得到延长。

Description

一种三轴调速的锥盘式无级变速器 技术领域
本发明属于动力机械变速器领域，具体涉及一种三轴调速的锥盘式无级变速器。
背景技术
自2007年以来，一系列的机电控制锥盘式无级变速器逐渐成熟，并由于其低成本、高效率及高可靠性在道路、非道路车辆及通用机械领域得到广泛应用。尤其是对纯电行驶工况的适应性，促使其逐步在电动汽车上得到应用。
锥盘式无级变速器的主要系统子功能是加压和调速。调速功能由调速系统完成。
一种典型的调速系统如专利CN103867678《一种锥盘式无级变速器》中公开的结构，调速系统由套设于锥盘轴，设置于动锥盘上的滚珠丝杠结构的调速机构实现。这种调速机构由于其刚度好，在大扭矩的应用上，如非道路车辆，得到了较好地应用。但对于中小型车辆及其他小扭矩应用，这种调速机构的成本较高、散热性较差的问题较突出。尤其是对安装空间较小、成本要求较高的中小型车辆，其成本、重量、尺寸的矛盾更加彰显。
CN106641143《锥盘式无级变速器调速机构及该锥盘式无级变速器》、CN105972179《锥盘式无级变速器及其调速机构》分别公开了拨叉式调速机构，较好地解决了散热和润滑问题。但对于车辆的应用，该类机构的刚度与尺寸、重量之间的矛盾仍无法统一解决。因此，较 适合应用在较小扭矩，同时对安装空间要求不高的领域。
发明内容
本发明的目的是提出一种适用于对安装空间，尤其是对车辆比较敏感的轴向安装空间，以及成本、重量、效率、散热性要求较高的机电控制锥盘式无级变速器。
本发明的技术方案为：
一种三轴调速的锥盘式无级变速器，包括主动轴、从动轴和调速机构，主动轴上设置有主动锥盘组，从动轴上设置有从动锥盘组，主动锥盘组和从动锥盘组由两者所夹持的挠性传动元件实现连接传动，主动轴和从动轴轴线相互平行，所述主动锥盘组包括主动动锥盘和主动定锥盘，所述从动锥盘组包括从动动锥盘和从动定锥盘，所述调速机构用于驱动主动锥盘组的主动动锥盘和从动锥盘组的从动动锥盘轴向移动。
所述调速机构包括1个或多个驱动机、调速I轴、调速II轴、调速III轴、第一链轮组、第二链轮组、加压推板I、加压推板II；所述驱动机直接或间接驱动调速I轴、调速II轴和/或调速III轴，所述第一链轮组包括链条I、链轮I和链轮IIIa，所述第二链轮组包括链条II、链轮II和链轮IIIb，所述链轮IIIa和链轮IIIb分别设置在调速III轴的两端，链轮I设置在调速I轴的一端，链轮II设置在调速II轴的一端，所述调速I轴设置有螺旋结构I，所述螺旋结构I包含有螺母I；所述调速II轴设置有螺旋结构II，所述螺旋结构II包含有螺母II；所述调速III轴设置有螺旋结构III，所述螺旋结构III包含有螺母III。
第一链轮组的所述链条I通过链轮I和链轮IIIa连接在调速III轴和调速I轴上，第二链轮组的所述链条II通过链轮II和链轮IIIb连接在调速III轴和调速II轴上，所述螺母III以螺旋副形式套设在所述调速III轴上，加压推板I和加压推板II分别位于所述螺母III两端且与螺母III相连接。
所述加压推板I一端连接在螺母III的一侧，另一端连接在螺母I上；加压推板II一端连接在螺母III的另一侧，另一端连接在螺母II上；加压推板I具有压推在主动动锥盘的第一工作部，加压推板II具有压推在从动动锥盘的第二工作部；所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，该轴承的外圈直接或间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，该轴承的外圈直接或间接与所述第二工作部接触。
调速I轴、调速II轴和调速III轴分别通过能承受轴向推力的轴承连接在壳体上，所述能承受轴向推力的轴承能够使调速I轴、调速II轴和调速III轴仅发生转动而不能移动，所述调速I轴、调速II轴和调速III轴以及主动轴和从动轴的轴线均保持平行。
所述链轮I与链轮IIIa齿数之比为i 1，链轮IIIb与链轮II齿数之比为i 2，螺母I的导程为L 1，螺母II的导程为L 2，螺母III的导程为L 3，所述L 1、L 3和i 1满足公式L 1＝L 3×i 1，所述L 2、L 3和i 2满足公式L 3＝i 2×L 2。
作为优选，所述调速I轴、调速III轴与主动轴的轴线基本在同一个平面内，所述调速II轴、调速III轴与从动轴的轴线基本在同一 个平面内。
作为优选，所述螺旋结构I、螺旋结构II和/或螺旋结构III为滚动螺旋结构或滑动螺旋结构。
作为优选，所述L 1、L 2L 3i 2和i 1满足公式L 1＝L 3＝L 2且i 1＝i 2。
作为优选，所述驱动机间接驱动调速I轴、调速II轴和/或调速III轴，所述间接驱动具体为通过蜗轮蜗杆减速机构或行星减速机构或齿轮减速机构进行驱动。
作为优选，所述主动定锥盘和从动定锥盘一侧的轴承为能承受轴向推力的轴承。
作为优选，所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，该轴承的外圈间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，该轴承的外圈间接与所述第二工作部接触，其中所述间接为采用球面垫圈的方式间接连接。
作为优选，所述主动轴和从动轴至少一根轴上设有锥盘加压机构，所述锥盘加压机构用于对主动定锥盘和/或从动定锥盘施加轴向压力。
替换前述工作部和动锥盘的具体设置方式为，所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的外圈与主动动锥盘接触，该轴承的内圈直接或间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的外圈与从动动锥盘接触，该轴承的内圈直接或间接与所述第二工作部接触。
作为优选，所述螺旋结构III包括一个或多个螺母III。
本发明的效果在于：
1，通过设置3根调速轴，且采用加压推板替换现有技术的拨叉和滚珠丝杠结构，从而形成配合结构，由于加压推板对称结构设置且两端均有支撑点，且施压部位基本位于加压推板的中部，从而使得加压推板受力均匀稳定，避免了现有的拨叉一端悬空受力，或支撑架受力过大，而造成变形和应力过大，容易导致整个装置失效的可能性；同时也使得无级变速器整体系统寿命得到大幅度提升，也减小了尺寸和重量。
2，通过设置3根调速轴，配合3根调速轴的设置方式和两个加压推板的设置方式以及各个部件连接方式和位置关系的设置，不会出现在调速过程中局部受力不均而导致调速不平稳现象的产生，使得调速更加平稳，无级变速器整体系统性能得到大幅度改善。
3，相比于现有技术的一根调速轴而言，设置了3根调速轴使得调速轴本身的尺寸可以大幅度减小，而减小尺寸的调速轴的的设置位置可以为主动轴和从动轴相关部件相间的空闲位置(填缝设置方式)，从而使得无级变速器整体结构更加紧凑，重量更轻。同时，减小了尺寸的调速轴可以应用标准件，从而整体上降低了无级变速器的成本。
4.加压推板和小型滚珠丝杠结构结合的形式，使得关键承载轴承不再封闭在密闭空间内，能够接触到飞溅的润滑油，保证了轴承的润滑和散热。
5.加压推板和小型滚珠丝杠结构结合的形式，较套设于锥盘轴 的滚珠丝杠结构在轴向上更为紧凑，较好地适应中小型车辆最为紧张的轴向安装空间。
6.调速系统可选用多个驱动机，在满足全程调速时间和调速力矩的前提下，降低了对单个驱动机性能要求，便于应用标准化模块，降低成本。
7.无级变速器整机采用电机配合机械调速系统调速，机械式加压系统，从而避免了耗能、高成本的液压控制系统，降低了成本，提高了传动效率。
8.无级变速器整机采用了机电控制系统，无需为液压系统配备电子油泵，也无需液压系统需要的怠速转速，从而更加适合需要纯电行驶模式的新能源汽车，包括纯电动汽车，插电式混合动力汽车等。
附图说明
图1为本发明一种实施方式(实施例1或3)的三轴调速的锥盘式无级变速器剖视的结构示意图。
图2为本发明一种实施方式(实施例1)的三轴调速的锥盘式无级变速器三维立体的结构示意图。
图3为本发明一种实施方式(实施例1)的三轴调速的锥盘式无级变速器三维立体的拆分示意图。
其中：1.调速II轴，2.从动轴，3.锥盘加压机构，4.从动定锥盘，5.从动动锥盘，6.加压推板I，6-1.第一工作部，7.链轮IIIa，8.螺母III，9.主动轴，10.主动动锥盘，11.主动定锥盘，12.球面垫圈，13.挠性传动元件，14.调速I轴，15.链轮I，16.链条I，17.螺母I，18.蜗轮 蜗杆减速机构，19.链条II，20.链轮IIIb，21.调速III轴，22.链轮II，23.加压推板II，23-1第二工作部，24.轴承，25.螺母，II 26.壳体。
具体实施方式
实施例1
如图1-3所示：一种三轴调速的锥盘式无级变速器，包括主动轴、从动轴和调速机构，主动轴上设置有主动锥盘组，从动轴上设置有从动锥盘组，主动锥盘组和从动锥盘组由两者所夹持的挠性传动元件实现连接传动，主动轴和从动轴轴线相互平行，所述主动锥盘组包括主动动锥盘和主动定锥盘，所述从动锥盘组包括从动动锥盘和从动定锥盘，所述调速机构用于驱动主动锥盘组的主动动锥盘和从动锥盘组的从动动锥盘轴向移动。
所述调速机构包括1个驱动机、调速I轴、调速II轴、调速III轴、第一链轮组、第二链轮组、加压推板I、加压推板II；所述驱动机直接或间接驱动调速I轴、调速II轴和/或调速III轴，所述第一链轮组包括链条I、链轮I和链轮IIIa，所述第二链轮组包括链条II、链轮II和链轮IIIb，所述链轮IIIa和链轮IIIb分别设置在调速III轴的两端，链轮I设置在调速I轴的一端，链轮II设置在调速II轴的一端，所述调速I轴设置有螺旋结构I，所述螺旋结构I包含有螺母I；所述调速II轴设置有螺旋结构II，所述螺旋结构II包含有螺母II；所述调速III轴设置有螺旋结构III，所述螺旋结构III包含有螺母III。
第一链轮组的所述链条I通过链轮I和链轮IIIa连接在调速III轴和调速I轴上，第二链轮组的所述链条II通过链轮II和链轮IIIb 连接在调速III轴和调速II轴上，所述螺母III以螺旋副形式套设在所述调速III轴上，加压推板I和加压推板II分别位于所述螺母III两端且与螺母III相连接。
所述加压推板I一端连接在螺母III的一侧，另一端连接在螺母I上；加压推板II一端连接在螺母III的另一侧，另一端连接在螺母II上；加压推板I具有压推在主动动锥盘的第一工作部，加压推板II具有压推在从动动锥盘的第二工作部；所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，该轴承的外圈间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，该轴承的外圈间接与所述第二工作部接触，其中所述间接为采用球面垫圈的方式间接连接。
调速I轴、调速II轴和调速III轴分别通过能承受轴向推力的轴承连接在壳体上，所述能承受轴向推力的轴承能够使调速I轴、调速II轴和调速III轴仅发生转动而不能移动，所述调速I轴、调速II轴和调速III轴以及主动轴和从动轴的轴线均保持平行。
所述链轮I与链轮IIIa齿数之比为i 1，链轮IIIb与链轮II齿数之比为i 2，螺母I的导程为L 1，螺母II的导程为L 2，螺母III的导程为L 3，所述L 1、L 3和i 1满足公式L 1＝L 3×i 1，所述L 2、L 3和i 2满足公式L 3＝i 2×L 2。且L 1＝L 3＝L 2且i 1＝i 2。
所述调速I轴、调速III轴与主动轴的轴线基本在同一个平面内，所述调速II轴、调速III轴与从动轴的轴线基本在同一个平面内。其 中所谓“基本”的含义为在常规误差范围内保持在同一个平面内。并且所述调速I轴、调速III轴与主动轴轴线的“顶点连接线”、所述调速II轴、调速III轴与从动轴轴线的“顶点连接线”、以及所述调速II轴与调速I轴轴线的“顶点连接线”构成等腰三角形，其中两腰为所述调速I轴、调速III轴与主动轴轴线的“顶点连接线”和所述调速II轴、调速III轴与从动轴轴线的“顶点连接线”。
所述螺旋结构I、螺旋结构II和螺旋结构III为滚动螺旋结构。
所述驱动机间接驱动调速III轴，所述间接驱动具体为通过蜗轮蜗杆减速机构进行驱动。
所述主动定锥盘和从动定锥盘一侧的轴承为能承受轴向推力的轴承。
所述主动轴和从动轴上设有锥盘加压机构，所述锥盘加压机构用于对主动定锥盘和从动定锥盘施加轴向压力。
所述螺旋结构III包括一个螺母III。
实施例2
如图1-3所示：一种三轴调速的锥盘式无级变速器，包括主动轴、从动轴和调速机构，主动轴上设置有主动锥盘组，从动轴上设置有从动锥盘组，主动锥盘组和从动锥盘组由两者所夹持的挠性传动元件实现连接传动，主动轴和从动轴轴线相互平行，所述主动锥盘组包括主动动锥盘和主动定锥盘，所述从动锥盘组包括从动动锥盘和从动定锥盘，所述调速机构用于驱动主动锥盘组的主动动锥盘和从动锥盘组的从动动锥盘轴向移动。
所述调速机构包括1个驱动机、调速I轴、调速II轴、调速III轴、第一链轮组、第二链轮组、加压推板I、加压推板II；所述驱动机直接或间接驱动调速I轴、调速II轴和/或调速III轴，所述第一链轮组包括链条I、链轮I和链轮IIIa，所述第二链轮组包括链条II、链轮II和链轮IIIb，所述链轮IIIa和链轮IIIb分别设置在调速III轴的两端，链轮I设置在调速I轴的一端，链轮II设置在调速II轴的一端，所述调速I轴设置有螺旋结构I，所述螺旋结构I包含有螺母I；所述调速II轴设置有螺旋结构II，所述螺旋结构II包含有螺母II；所述调速III轴设置有螺旋结构III，所述螺旋结构III包含有螺母III。
第一链轮组的所述链条I通过链轮I和链轮IIIa连接在调速III轴和调速I轴上，第二链轮组的所述链条II通过链轮II和链轮IIIb连接在调速III轴和调速II轴上，所述螺母III以螺旋副形式套设在所述调速III轴上，加压推板I和加压推板II分别位于所述螺母III两端且与螺母III相连接。
所述加压推板I一端连接在螺母III的一侧，另一端连接在螺母I上；加压推板II一端连接在螺母III的另一侧，另一端连接在螺母II上；加压推板I具有压推在主动动锥盘的第一工作部，加压推板II具有压推在从动动锥盘的第二工作部；所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，该轴承的外圈间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，该轴承的外圈间接与所述第二工作部接触，其中所述间接为采用球面垫圈的方式间 接连接。
调速I轴、调速II轴和调速III轴分别通过能承受轴向推力的轴承连接在壳体上，所述能承受轴向推力的轴承能够使调速I轴、调速II轴和调速III轴仅发生转动而不能移动，所述调速I轴、调速II轴和调速III轴以及主动轴和从动轴的轴线均保持平行。
所述链轮I与链轮IIIa齿数之比为i 1，链轮IIIb与链轮II齿数之比为i 2，螺母I的导程为L 1，螺母II的导程为L 2，螺母III的导程为L 3，所述L 1、L 3和i 1满足公式L 1＝L 3×i 1，所述L 2、L 3和i 2满足公式L 3＝i 2×L 2。且L 1＝L 3＝L 2且i 1＝i 2。
所述调速I轴、调速III轴与主动轴的轴线基本在同一个平面内，所述调速II轴、调速III轴与从动轴的轴线基本在同一个平面内。其中所谓“基本”的含义为在常规误差范围内保持在同一个平面内。并且所述调速III轴与主动轴轴线的距离和调速III轴与从动轴轴线的距离不相等；或所述调速III轴与主动轴轴线的距离和调速III轴与从动轴轴线的距离相等，但主动轴与调速I轴和从动轴与调速II轴轴线的距离不相等。即调速I轴、调速III轴与主动轴轴线的“顶点连接线”、所述调速II轴、调速III轴与从动轴轴线的“顶点连接线”、以及所述调速II轴与调速I轴轴线的“顶点连接线”构成常规三角形。
所述螺旋结构I、螺旋结构II和螺旋结构III为滚动螺旋结构。
所述驱动机间接驱动调速III轴，所述间接驱动具体为通过蜗轮蜗杆减速机构进行驱动。
所述主动定锥盘和从动定锥盘一侧的轴承为能承受轴向推力的 轴承。
所述主动轴和从动轴上设有锥盘加压机构，所述锥盘加压机构用于对主动定锥盘和从动定锥盘施加轴向压力。
所述螺旋结构III包括一个螺母III。
实施例3
一种三轴调速的锥盘式无级变速器，包括主动轴、从动轴和调速机构，主动轴上设置有主动锥盘组，从动轴上设置有从动锥盘组，主动锥盘组和从动锥盘组由两者所夹持的挠性传动元件实现连接传动，主动轴和从动轴轴线相互平行，所述主动锥盘组包括主动动锥盘和主动定锥盘，所述从动锥盘组包括从动动锥盘和从动定锥盘，所述调速机构用于驱动主动锥盘组的主动动锥盘和从动锥盘组的从动动锥盘轴向移动。
所述调速机构包括2个或3个驱动机、调速I轴、调速II轴、调速III轴、第一链轮组、第二链轮组、加压推板I、加压推板II；所述驱动机直接或间接驱动调速I轴、调速II轴和/或调速III轴，所述第一链轮组包括链条I、链轮I和链轮IIIa，所述第二链轮组包括链条II、链轮II和链轮IIIb，所述链轮IIIa和链轮IIIb分别设置在调速III轴的两端，链轮I设置在调速I轴的一端，链轮II设置在调速II轴的一端，所述调速I轴设置有螺旋结构I，所述螺旋结构I包含有螺母I；所述调速II轴设置有螺旋结构II，所述螺旋结构II包含有螺母II；所述调速III轴设置有螺旋结构III，所述螺旋结构III包含有螺母III。
第一链轮组的所述链条I通过链轮I和链轮IIIa连接在调速III 轴和调速I轴上，第二链轮组的所述链条II通过链轮II和链轮IIIb连接在调速III轴和调速II轴上，所述螺母III以螺旋副形式套设在所述调速III轴上，加压推板I和加压推板II分别位于所述螺母III两端且与螺母III相连接。
所述加压推板I一端连接在螺母III的一侧，另一端连接在螺母I上；加压推板II一端连接在螺母III的另一侧，另一端连接在螺母II上；加压推板I具有压推在主动动锥盘的第一工作部，加压推板II具有压推在从动动锥盘的第二工作部；所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，另一侧通过垫圈与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，另一侧通过垫圈与所述第二工作部接触。
调速I轴、调速II轴和调速III轴分别通过能承受轴向推力的轴承连接在壳体上，所述能承受轴向推力的轴承能够使调速I轴、调速II轴和调速III轴仅发生转动而不能移动，所述调速I轴、调速II轴和调速III轴以及主动轴和从动轴的轴线均保持平行。
所述链轮I与链轮IIIa齿数之比为i 1，链轮IIIb与链轮II齿数之比为i 2，螺母I的导程为L 1，螺母II的导程为L 2，螺母III的导程为L 3，所述L 1、L 3和i 1满足公式L 1＝L 3×i 1，所述L 2、L 3和i 2满足公式L 3＝i 2×L 2。
所述调速I轴、调速II轴、调速III轴、主动轴与从动轴的轴线基本在同一个平面内。其中所谓“基本”的含义为在常规误差范围内保持在同一个平面内。
所述螺旋结构I、螺旋结构II或螺旋结构III为滚动螺旋结构或滑动螺旋结构。不同螺旋结构采用不同的滚动或滑动螺旋结构，不完全一致。
当驱动机不满足全程调速时间下的扭矩需求时，选用所述2个或3个驱动机间接驱动调速I轴、调速II轴和调速III轴，所述间接驱动具体为通过行星减速机构进行驱动。且分别连接调速I轴、调速II轴和调速III轴的驱动机通过行星减速机构和链传动传递到调速III轴上转速相等。
所述主动定锥盘和从动定锥盘一侧的轴承为能承受轴向推力的轴承。
所述主动轴上设有锥盘加压机构，所述锥盘加压机构用于对主动定锥盘施加轴向压力。
所述螺旋结构III包括2个螺母III，串联设置。

Claims (10)

  1. 一种三轴调速的锥盘式无级变速器，其特征在于：包括主动轴、从动轴和调速机构，主动轴上设置有主动锥盘组，从动轴上设置有从动锥盘组，主动锥盘组和从动锥盘组由两者所夹持的挠性传动元件实现连接传动，主动轴和从动轴轴线相互平行，所述主动锥盘组包括主动动锥盘和主动定锥盘，所述从动锥盘组包括从动动锥盘和从动定锥盘，所述调速机构用于驱动主动锥盘组的主动动锥盘和从动锥盘组的从动动锥盘轴向移动；
    所述调速机构包括1个或多个驱动机、调速I轴、调速II轴、调速III轴、第一链轮组、第二链轮组、加压推板I、加压推板II；所述驱动机直接或间接驱动调速I轴、调速II轴和/或调速III轴，所述第一链轮组包括链条I、链轮I和链轮IIIa，所述第二链轮组包括链条II、链轮II和链轮IIIb，所述链轮IIIa和链轮IIIb分别设置在调速III轴的两端或者所述链轮IIIa和链轮IIIb同时同轴顺次设置在调速III轴的任意一端，链轮I设置在调速I轴的一端，链轮II设置在调速II轴的一端，所述调速I轴设置有螺旋结构I，所述螺旋结构I包含有螺母I；所述调速II轴设置有螺旋结构II，所述螺旋结构II包含有螺母II；所述调速III轴设置有螺旋结构III，所述螺旋结构III包含有螺母III；
    第一链轮组的所述链条I通过链轮I和链轮IIIa连接在调速III轴和调速I轴上，第二链轮组的所述链条II通过链轮II和链轮IIIb连接在调速III轴和调速II轴上，所述螺母III以螺旋副形式套设在所述调速III轴上，加压推板I和加压推板II分别位于所述螺母III两端且与螺母III相连接；
    所述加压推板I一端连接在螺母III的一侧，另一端连接在螺母I上；加压推板II一端连接在螺母III的另一侧，另一端连接在螺母II上；加压推板I具有压推在主动动锥盘的第一工作部，加压推板II具有压推在从动动锥盘的第二工作部；所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，该轴承的外圈直接或间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，该轴承的外圈直接或间接与所述第二工作部接触；
    调速I轴、调速II轴和调速III轴分别通过能承受轴向推力的轴承连接在壳体上，所述能承受轴向推力的轴承能够使调速I轴、调速II轴和调速III轴仅发生转动而不能移动，所述调速I轴、调速II轴和调速III轴以及主动轴和从动轴 的轴线均保持平行；
    所述链轮I与链轮IIIa齿数之比为i 1，链轮IIIb与链轮II齿数之比为i 2，螺母I的导程为L 1，螺母II的导程为L 2，螺母III的导程为L 3，所述L 1、L 3和i 1满足公式L 1＝L 3×i 1，所述L 2、L 3和i 2满足公式L 3＝i 2×L 2。
  2. 根据权利要求1所述的锥盘式无级变速器，其特征在于，所述调速I轴、调速III轴与主动轴的轴线基本在同一个平面内，所述调速II轴、调速III轴与从动轴的轴线基本在同一个平面内。
  3. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，所述螺旋结构I、螺旋结构II和/或螺旋结构III为滚动螺旋结构或滑动螺旋结构。
  4. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，所述L 1、L 2、L 3、i 1和i 2满足公式L 1＝L 3＝L 2且i 1＝i 2。
  5. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，所述驱动机间接驱动调速I轴、调速II轴和/或调速III轴，所述间接驱动具体为通过蜗轮蜗杆减速机构或行星减速机构或齿轮减速机构进行驱动。
  6. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，所述主动定锥盘和从动定锥盘一侧的轴承为能承受轴向推力的轴承。
  7. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的内圈与主动动锥盘接触，该轴承的外圈间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的内圈与从动动锥盘接触，该轴承的外圈间接与所述第二工作部接触，其中所述间接为采用球面垫圈的方式间接连接。
  8. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，所述主动轴和从动轴至少一根轴上设有锥盘加压机构，所述锥盘加压机构用于对主动定锥盘和/或从动定锥盘施加轴向压力。
  9. 根据权利要求1或2所述的锥盘式无级变速器，其特征在于，替换权利要求1的设置方式为，所述第一工作部与所压推的主动动锥盘之间设有轴承，该轴承的外圈与主动动锥盘接触，该轴承的内圈直接或间接与所述第一工作部接触；所述第二工作部与所压推的从动动锥盘之间设有轴承，该轴承的外圈与从动动锥盘接触，该轴承的内圈直接或间接与所述第二工作部接触。
  10. 根据权利要求1～8任意一项所述的锥盘式无级变速器，其特征在于，所述螺旋结构III包括一个或多个螺母III。
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CN106195176A (zh) * 2016-07-07 2016-12-07 常州东风无级变速器有限公司 锥盘式无级变速器
CN106641143A (zh) * 2017-01-19 2017-05-10 常州东风无级变速器有限公司 锥盘式无级变速器调速机构及该锥盘式无级变速器
CN110185763A (zh) * 2019-06-27 2019-08-30 重庆宗申无级变速传动有限公司 一种无级变速器

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