CN116592102A - Friction type step-variable transmission with long service life for vehicle - Google Patents
Friction type step-variable transmission with long service life for vehicle Download PDFInfo
- Publication number
- CN116592102A CN116592102A CN202310552826.8A CN202310552826A CN116592102A CN 116592102 A CN116592102 A CN 116592102A CN 202310552826 A CN202310552826 A CN 202310552826A CN 116592102 A CN116592102 A CN 116592102A
- Authority
- CN
- China
- Prior art keywords
- friction
- unit
- assembly
- reverse gear
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 99
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/46—Gearings providing a discontinuous or stepped range of gear ratios
-
- 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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
-
- 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
- F16H61/68—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 stepped 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
- 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
- F16H61/68—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 stepped gearings
- F16H61/684—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 stepped gearings without interruption of drive
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
The invention discloses a long-life friction type step-variable transmission for a vehicle.A first gear shifting driving unit is in sliding fit with a shell, and when the first gear shifting driving unit drives a first annular friction unit to move and enables a first friction disc surface to be matched with a first friction assembly, a first forward gear is formed among an input shaft, a torque transmission assembly, the first annular friction unit, the first friction assembly and an output shaft; the reverse gear driving assembly is in sliding fit with the shell, the reverse gear driving assembly drives the reverse gear shaft to axially move, the reverse gear shaft drives the first friction assembly to axially move along the output shaft, the reverse gear friction wheel corresponds to the second friction disc surface, and after the first gear shifting driving unit drives the first annular friction unit to move and enables the second friction disc surface to be combined with the reverse gear friction wheel, a reverse gear is formed between the input shaft and the torque transmission assembly, the first annular friction unit, the reverse gear friction wheel, the reverse gear shaft, the first friction assembly and the output shaft. The invention can prolong the service life of the transmission.
Description
Technical Field
The invention relates to the technical field of friction speed variators, in particular to a long-service-life friction step-variable transmission for a vehicle.
Background
The existing step-variable transmission mainly realizes torque transmission through gear engagement, and further realizes a torque conversion function through gear engagement with different proportions, but the clutch is disconnected firstly when shifting each time, so that gear switching can be performed. The friction type speed changer is mainly round table type, disc type and hemisphere type, realizes the effect of changing moment through the change of friction pulley radius on friction disc, friction cone, friction ball, but when changing moment at every turn, the friction pulley all moves on friction disc, friction cone, friction ball through sliding friction, because itself friction pulley and friction disc, friction cone, friction ball are high coefficient of friction face, consequently sliding shift makes the loss of derailleur aggravate.
Disclosure of Invention
The invention provides a friction type step-variable transmission with long service life for a vehicle.
The friction type step-variable transmission with long service life for the vehicle comprises a shell, an input shaft and an output shaft, wherein the input shaft and the output shaft are respectively and rotatably arranged on the shell, the axial direction of the output shaft is not parallel to the axial direction of the input shaft, a torque transmission assembly is arranged on the peripheral surface of the input shaft, and the friction type step-variable transmission further comprises a first friction assembly, a reverse gear shaft, a reverse gear friction wheel, a reverse gear driving assembly, a first annular friction unit and a first gear shifting driving unit;
the first friction assembly and the output shaft are fixed in the circumferential direction and can move along the axial direction of the output shaft, the first friction assembly is fixed with the reverse gear shaft, the reverse gear friction wheel is fixed with the reverse gear shaft, and the reverse gear driving assembly is arranged on the reverse gear shaft; one end of the first annular friction unit is provided with a first friction disc surface and a second friction disc surface, and the first annular friction unit is matched with the torque transmission assembly;
the first gear shifting driving unit is in sliding fit with the shell, and when the first gear shifting driving unit drives the first annular friction unit to move and enables the first friction disc surface to be matched with the first friction assembly, a first forward gear is formed among the input shaft, the torque transmission assembly, the first annular friction unit, the first friction assembly and the output shaft;
the reverse gear driving assembly is in sliding fit with the shell, the reverse gear driving assembly drives the reverse gear shaft to axially move, the reverse gear shaft drives the first friction assembly to axially move along the output shaft, the first friction assembly does not correspond to the first friction disc surface, the reverse gear friction wheel corresponds to the second friction disc surface, and after the first gear shifting driving unit drives the first annular friction unit to move and enables the second friction disc surface to be combined with the reverse gear friction wheel, a reverse gear is formed between the input shaft and the torque transmission assembly, the first annular friction unit, the reverse gear friction wheel, the reverse gear shaft, the first friction assembly and the output shaft.
When the friction type step-variable transmission is shifted, the friction wheels do not need to be made to slide on the friction disc to change different positions, and then the function of gear is achieved. According to the invention, only rolling friction force exists between the friction wheel and the friction disc surface, so that friction loss can be greatly reduced, the service life of the transmission is prolonged, and the reverse gear design can simplify the existence of the idle gear through the characteristic that the friction force directions of the friction wheel at the symmetrical position of the first annular friction unit are opposite, so that the structure is simpler. Because of the adoption of friction speed change, compared with a gear speed changer, a clutch is not required to be installed, so that the whole vehicle structure is further simplified.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a perspective view of the housing.
Fig. 3 is a perspective view of the present invention after hiding the case.
Fig. 4 is a schematic illustration of the first part with the first part hidden from view in fig. 3.
Fig. 5 is a schematic illustration of the second part with the second part hidden from view in fig. 3.
FIG. 6 is a schematic illustration of the first annular friction unit mated with the first shift drive unit.
FIG. 7 is a schematic illustration of the engagement of the second annular friction unit with the second shift drive unit.
FIG. 8 is a schematic illustration of a third annular friction unit engaged with a third shift drive unit.
The reference symbols in the drawings:
the gear shifting device comprises a first bearing 1, a second bearing 2, a first bearing 3, a second bearing 4, a reverse gear shaft 5, a reverse gear friction wheel 501, a reverse gear driving block 502, an output shaft 6, an assembly hole 601, a third friction wheel 602, a second friction wheel 603, a key block 604, a relief hole 605, a first friction assembly 7, a torque transmission block 701, a first friction wheel 702, a connecting rod 703, a fixed shaft 8 and a reverse gear shifting fork 9;
the input shaft 10, the moment arm 1002, the first sleeve 1003, the spring 1004, the second sleeve 1005, the third sleeve 1006, the second thrust bearing 1101, the second shift push rod 1102, the first thrust bearing 1201, the first shift push rod 1202,
a third thrust bearing 1301, a third shift push rod 1302, a third annular friction unit 14, a fourth friction disk surface 1401, a third torque transmission rod 1402, a third connecting rod 1403, a third thrust member 1404;
a first annular friction unit 15, a first friction ring 150, a first friction disk surface 1501, a second friction disk surface 1502, a first torque transmission rod 1503, a first connecting rod 1504, a first thrust member 1505;
a second annular friction unit 16, a second friction ring 160, a third friction disk face 1601, a second torque transmission rod 1602, a second connecting rod 1603, a second thrust member 1604;
the housing 17, the first bearing mounting hole 1701, the second bearing mounting hole 1702, the notch 1703, the second through hole 1704, the first through hole 1705, the third through hole 1706. A third annular groove 1707, a first annular groove 1708, and a second annular groove 1709.
Detailed Description
As shown in fig. 1 to 8, the long-life friction-type step-variable transmission for a vehicle according to the present invention includes a housing 17, an input shaft 10, an output shaft 6, a first friction pack 7, a reverse shaft 5, a reverse friction wheel 501, a reverse drive pack, a first annular friction unit 15, and a first shift drive unit, wherein the output shaft 6, the first friction pack 7, the reverse shaft 5, and the reverse friction wheel 501 form a power output unit, and the relationship between each part and each part will be described in detail below:
the housing 17 is provided with a stepped hole, the input shaft 10 passes through the stepped hole, the stepped hole is provided with a first step, a second step and a third step, the first step is provided with a first annular groove 1708, the bottom of the first annular groove 1708 is provided with a first through hole 1705, the second step is provided with a second annular groove 1709, the bottom of the second annular groove 1709 is provided with a second through hole 1704, the third step is provided with a third annular groove 1707, and the bottom of the second annular groove 1709 is provided with a third through hole 1706.
The first annular groove 1708 is for engagement with a first shift drive unit and a portion of the first shift drive unit passes through the first through hole 1705, the second annular groove 1709 is for engagement with a second shift drive unit and a portion of the second shift drive unit passes through the second through hole 1704, the third annular groove 1707 is for engagement with a third shift drive unit and a portion of the third shift drive unit passes through the third through hole 1706. The housing 17 is also provided with a notch 1703, and the reverse drive assembly is mated with the notch 1703, with the stepped bore and notch both being located on the same side of the housing 17.
The input shaft 10 and the output shaft 6 are rotatably disposed on the housing 17, a first bearing mounting hole 1701 and a second bearing mounting hole 1702 are provided on two opposite side walls of the housing 17, an end portion of the reverse gear shaft 5 is slidably engaged with a fixed shaft 8, a shaft hole is provided on the fixed shaft 8, the reverse gear shaft 5 is slidably engaged with the shaft hole on the fixed shaft 8, a first bearing 1 is provided on the fixed shaft 8, the first bearing 1 is engaged with the first bearing mounting hole 1701, a second bearing 2 is provided on the output shaft 6, and the second bearing 2 is engaged with the second bearing mounting hole 1702. The axial direction of the output shaft 6 is not parallel to the axial direction of the input shaft 10, and it is preferable that the axial direction of the output shaft 6 is perpendicular to the axial direction of the input shaft 10.
The torque transmission assembly is arranged on the peripheral surface of the input shaft 10, the torque transmission assembly arranged on the peripheral surface of the input shaft 10 comprises a plurality of force arms 1002, a first sleeve 1003 is arranged on each force arm, a spring 1004 is arranged in the first sleeve 1003, one end of the spring 1004 is fixed with the first sleeve 1003, and the other end of the spring 1004 is connected with the first annular friction unit 15. Preferably, a second sleeve 1005 and a third sleeve 1006 are provided on each arm, the first sleeve 1003 is located between the second sleeve 1005 and the third sleeve 1006, and springs 1004 are also installed in the second sleeve 1005 and the third sleeve 1006.
The first friction component 7 and the output shaft 6 are fixed in the circumferential direction and can axially move along the output shaft 6, the first friction component 7 and the reverse gear shaft 5 are fixed, one end of the output shaft 6 is provided with an axial assembly hole 601, the circumferential surface of the output shaft 6 is provided with a radial yielding hole 605, and the yielding hole 605 is communicated with the assembly hole 601.
The first friction assembly 7 comprises a torque transmission block 701, a first friction wheel 702 and a connecting rod 703, the first friction wheel 702 is sleeved on the output shaft 6, a part of the torque transmission block 701 is located in the assembly hole 601, two ends of the torque transmission block 701 penetrate through the relief hole 605 and are fixed with the first friction wheel 702, the torque transmission block 701 is in clearance or sliding fit with the relief hole 605, so that the torque transmission block 701 and the output shaft 6 form a circumference, the torque transmission block 701 can move along the relief hole 605, and the first friction assembly 7 can move along the axial direction of the output shaft 6. Preferably, a key block 604 is provided on the outer peripheral surface of the output shaft 6, and a key groove is provided in the inner hole of the first friction wheel 702, and the key groove is in sliding fit with the key block 604, so that the reliability of the circumferential fixation of the first friction wheel and the output shaft is improved. One end of the connecting rod 703 is fixed to the torque transmission block 701, and the other end of the connecting rod 703 is fixed to the reverse shaft 5.
When the reverse shaft 5 moves axially, the reverse shaft 5 sequentially pushes the connection rod 703, the torque transmission block 701, and the first friction wheel 702 to move axially along the output shaft 6, wherein a portion of the connection rod 703 and the torque transmission block 701 moves axially within the fitting hole 601, and another portion of the first friction wheel 702 and the torque transmission block 701 moves axially outside the fitting hole 601.
The reverse friction wheel 501 is fixed with the reverse shaft 5, and the reverse driving component is arranged on the reverse shaft 5; the reverse gear driving assembly comprises a first bearing 3, a second bearing 4, a reverse gear driving block 502 and a reverse gear shifting fork 9, wherein the first bearing 3, the second bearing 4 and the reverse gear driving block 502 are respectively arranged on a reverse gear shaft 5, the first bearing 3, the second bearing 4 and the reverse gear driving block 502 are preferentially fixed with the reverse gear shaft 5, the reverse gear driving block 502 is positioned between the first bearing 3 and the second bearing 4, the reverse gear shifting fork 9 is respectively matched with the first bearing 3 and the second bearing 4, the reverse gear shifting fork 9 in the reverse gear driving assembly passes through a notch 1703 on a shell 17, and the reverse gear shifting fork 9 is in sliding fit with the notch 1703.
The first bearing 3 and the second bearing 4 preferably adopt thrust ball bearings, the reverse gear shaft 5 is in an active rotation state or a passive rotation state, the first bearing 3, the second bearing 4 and the reverse gear driving block 502 rotate along with the reverse gear shaft 5, and after the reverse gear shifting fork 9 is matched with the first bearing 3 and the second bearing 4, the friction formed by the first bearing 3 and the second bearing 4 and the reverse gear shifting fork 9 is rolling friction, so that the first bearing 3, the second bearing 4 and the reverse gear shifting fork 9 can be prevented from being damaged.
A first friction disk surface 1501 and a second friction disk surface 1502 are provided at one end of the first annular friction unit 15, and the first annular friction unit 15 is engaged with the torque transmission assembly. The first annular friction unit 15 is composed of a cylindrical section and a tapered section fixed to the cylindrical section, the first friction disk surface 1501 is an end face of the tapered section, and the second friction disk surface 1502 is a part of an end face of the cylindrical section, and therefore, the first friction disk surface 1501 and the second friction disk surface 1502 are not on the same face. The first friction disk surface 1501 is for engagement with the first friction wheel 702 and the second friction disk surface 1502 is for engagement with the reverse friction wheel 501.
The first gear shift driving unit is in sliding fit with the housing 17, and when the first gear shift driving unit drives the first annular friction unit 15 to move and causes the first friction disc surface 1501 to be matched with the first friction assembly 7, a first forward gear is formed between the input shaft 10 and the torque transmission assembly, the first annular friction unit 15, the first friction assembly 7 and the output shaft 6.
The first annular friction unit 15 includes a first friction ring 150, a first torque transmission rod 1503, a first connecting rod 1504, and a first thrust member 1505, where the first friction disk surface 1501 and the second friction disk surface 1502 are disposed at one end of the first friction ring 150, the first friction ring 150 is connected to the first thrust member 1505 through the first connecting rod 1504, one end of the first torque transmission rod 1503 is fixed at the other end of the first friction ring 150, and the other end of the first torque transmission rod 1503 is matched with the torque transmission component.
First torque transfer rod 1503 mates with first sleeve 1003 and first torque transfer rod 1503 is also coupled to spring 1004 located within first sleeve 1003 such that separation of first torque transfer rod 1503 from first sleeve 1003 is prevented by the action of spring 1004.
The first shift driving unit includes a first thrust bearing 1201, and a first shift push rod 1202, one end of the first thrust bearing 1201 is for coupling with or uncoupling from the first annular friction unit 15, and the other end of the first thrust bearing 1201 is fixed to the first shift push rod 1202.
Assume that the initial state is: the first thrust bearing 1201 is fitted in the first annular groove 1708, the first friction disk surface 1501 corresponds to the position of the first friction wheel 702, and the first friction disk surface 1501 is in a separated state from the first friction wheel 702. When axial thrust is applied to the first shift push rod 1202, the first thrust bearing 1201 moves toward the first thrust member 1505 following the first shift push rod 1202, eventually the first thrust bearing 1201 is combined with the first thrust member 1505, and under the continuous thrust action, the first thrust bearing 1201 pushes the first thrust member 1505 to move, thereby moving the first annular friction unit 15 as a whole toward the first friction wheel 702, eventually combining the first friction disk surface 1501 with the first friction wheel 702, so that a first forward gear is formed between the input shaft 10 and the torque transmission assembly, the first annular friction unit 15, the first friction assembly 7, and the output shaft 6.
When the input shaft 10 rotates, the torque of the input shaft 10 and the torque of the output are sequentially transmitted to the first annular friction unit 15 through the torque transmission component, so that the first annular friction unit 15 is in a rotating state, and the first friction disc surface 1501 of the first annular friction unit 15 is combined with the first friction wheel 702, so that the first annular friction unit 15 drives the first friction wheel 702 to rotate, the first friction wheel 702 drives the output shaft 6 to rotate, and finally the torque is output by the output shaft 6.
The reverse gear driving assembly is in sliding fit with the shell 17, the reverse gear driving assembly drives the reverse gear shaft 5 to axially move, namely, an axial acting force is applied to the first bearing 3 or the second bearing 4 through the reverse gear shifting fork 9, the reverse gear driving block 502 obtains the axial force and then drives the reverse gear shaft 5 to axially move, the reverse gear shaft 5 drives the first friction assembly 7 to axially move along the output shaft 6, the first friction assembly 7 does not correspond to the first friction disc surface 1501, the reverse gear friction wheel 501 corresponds to the second friction disc surface 1502, and after the first gear shifting driving unit drives the first annular friction unit 15 to move and enables the second friction disc surface 1502 to be combined with the reverse gear friction wheel 501, a reverse gear is formed among the input shaft 10, the torque transmission assembly, the first annular friction unit 15, the reverse gear friction wheel 501, the reverse gear shaft 5, the first friction assembly 7 and the output shaft 6.
When the input shaft 10 rotates, the torque output by the input shaft 10 and the torque output by the input shaft are sequentially transmitted to the first annular friction unit 15 through the torque transmission component, so that the first annular friction unit 15 is in a rotating state, and as the second friction disc surface 1502 of the first annular friction unit 15 is combined with the reverse gear friction wheel 501 and the first annular friction unit 15 is separated from the first friction disc surface 1501, the reverse gear friction wheel 501 is driven to rotate by the first annular friction unit 15, the output shaft 6 is driven to rotate by the reverse gear friction wheel 501, and finally the torque for reverse gear is output by the output shaft 6.
In the present embodiment, since the phase difference between the first friction wheel 702 and the reverse friction wheel 501 is 180 degrees, when the first annular friction means 15 rotates in the same direction, the rotation directions of the first friction wheel 702 and the reverse friction wheel 501 are opposite to each other when the first friction wheel 702 and the reverse friction wheel 501 are engaged with each other, and the output shaft 6 outputs the torque output of the forward gear or the torque of the reverse gear. This structure makes use of the characteristic that the friction force directions of the first friction wheel 702 and the reverse friction wheel 501 are opposite at the symmetrical position of the first annular friction unit 15, so that the reverse design can simplify the existence of the idle wheel, and the structure is simpler.
The invention further comprises a second friction wheel 603, a second annular friction unit 16 and a second gear shifting driving unit, wherein the second friction wheel 603 is fixed with the output shaft 6, the first annular friction unit 15 surrounds the second annular friction unit 16, the second annular friction unit 16 is connected with the torque transmission assembly, and a third friction disc face 1601 is arranged at one end of the second annular friction unit 16.
The second gear shift driving unit is slidably engaged with the housing 17, and drives the second annular friction unit 16 to move and engages the third friction plate surface 1601 with the second friction wheel 603, thereby forming a second forward gear between the input shaft 10 and the torque transmission assembly, the second annular friction unit 16, the second friction wheel 603, and the output shaft 6.
The second annular friction unit 16 includes a second friction ring 160, a second torque transmission rod 1602, a second connecting rod 1603, and a second thrust member 1604, the third friction disk surface 1601 is disposed at one end of the second friction ring 160, the second friction ring 160 is connected with the second thrust member 1604 through the second connecting rod 1603, one end of the second torque transmission rod 1602 is fixed at the other end of the second friction ring 160, and the other end of the second torque transmission rod 1602 is matched with the torque transmission assembly.
The second shift driving unit includes a second thrust bearing 1101, and a second shift push rod 1102, one end of the second thrust bearing 1101 is for coupling to or uncoupling from the second annular friction unit 16, and the other end of the second thrust bearing 1101 is fixed to the second shift push rod 1102. The second thrust bearing 1101 mates with the second annular groove 1709 and the second shift plunger 1102 mates with the second through-hole 1704.
When it is necessary to switch from the first forward gear to the second forward gear, the first thrust bearing 1201 is separated from the first annular friction unit 15 by the first shift rod 1202, and the first annular friction unit 15 is separated from the first friction wheel 702 by the restoring force of the spring 14, releasing the first forward gear. Then, when axial thrust is applied to the second shift plunger 1102, the second thrust bearing 1101 moves along with the second shift plunger 1102 toward the second thrust member 1604, and finally, the second thrust bearing 1101 is combined with the second thrust member 1604, and under the continuous thrust, the second thrust bearing 1101 pushes the second thrust member 1604 to move, so that the second annular friction unit 16 moves toward the second friction wheel 603 as a whole, and finally, the third friction disc face 1601 is combined with the second friction wheel 603, so that a second forward gear is formed between the input shaft 10 and the torque transmission assembly, the second annular friction unit 16, the second friction wheel 603, and the output shaft 6.
When the input shaft 10 rotates, the torque output by the input shaft 10 and the torque output by the input shaft are sequentially transmitted to the second annular friction unit 16 through the torque transmission component, so that the second annular friction unit 16 is in a rotating state, and as the third friction disc surface 1601 of the second annular friction unit 16 is combined with the second friction wheel 603, the second annular friction unit 16 drives the second friction wheel 603 to rotate, the second friction wheel 603 drives the output shaft 6 to rotate, and finally the torque of the second forward gear is output by the output shaft 6.
The invention further comprises a third friction wheel 602, a third annular friction unit 14 and a third gear shifting driving unit, wherein the third friction wheel 602 is fixed with the output shaft 6, the third annular friction unit 14 surrounds the first annular friction unit 15, the third annular friction unit 14 is connected with the torque transmission assembly, and a fourth friction disc surface 1401 is arranged at one end of the third annular friction unit 14.
The third gear shift driving unit is slidably engaged with the housing 17, and after driving the third annular friction unit 14 to move and engaging the fourth friction disc surface 1401 with the third friction wheel 602, a third forward gear is formed between the input shaft 10 and the torque transmission assembly, the third annular friction unit 14, the third friction wheel 602, and the output shaft 6.
The third annular friction unit 14 comprises a third friction ring 140, a third torque transmission rod 1402, a third connecting rod 1403 and a third thrust member 1404, the fourth friction disk surface 1401 is arranged at one end of the third friction ring 140, the third friction ring 140 is connected with the third thrust member 1404 through the third connecting rod 1403, one end of the third torque transmission rod 1402 is fixed at the other end of the second friction ring 140, and the other end of the third torque transmission rod 1402 is matched with the torque transmission assembly;
the third shift drive unit includes: a third thrust bearing 1301, a third shift push rod 1302, one end of the third thrust bearing 1301 is used for being combined with or separated from the third annular friction unit 14, and the other end of the third thrust bearing 1301 is fixed with the second shift push rod 1302. The third thrust bearing 1301 mates with a third annular groove 1707 and the third shift push rod 1302 mates with a third through bore 1706.
When a shift to the third forward gear is required, the first forward gear or the second forward gear is released by the first shift rod 1202 or the second shift rod 1102.
Then, when an axial thrust force is applied to the third gear shift push rod 1302, the third thrust bearing 1301 moves along with the third gear shift push rod 1302 toward the third thrust member 1404, and finally the third thrust bearing 1301 is combined with the third thrust member 1404, and under the continuous thrust force, the third thrust bearing 1301 pushes the third thrust member 1404 to move, so that the third annular friction unit 14 moves toward the third friction wheel 602 as a whole, and finally the fourth friction disc surface 1401 is combined with the third friction wheel 603, so that a third forward gear is formed between the input shaft 10 and the torque transmission assembly, the third annular friction unit 14, the third friction wheel 602, and the output shaft 6.
When the input shaft 10 rotates, the torque output by the input shaft 10 and the torque output by the input shaft are sequentially transmitted to the third annular friction unit 14 through the torque transmission assembly, so that the third annular friction unit 14 is in a rotating state, and as the fourth friction disc surface 1401 of the third annular friction unit 14 is combined with the third friction wheel 602, the third annular friction unit 14 drives the third friction wheel 602 to rotate, the third friction wheel 602 drives the output shaft 6 to rotate, and finally the torque of the third forward gear is output by the output shaft 6.
As can be seen from the above, the casing 17, the input shaft 10, the reverse gear driving assembly, the first annular friction unit 15 and the first shift driving unit form a shift driving device of the vehicular friction type step-variable transmission, and the structure of the second annular friction unit 16 and the second shift driving unit, and the structure of the third annular friction unit 14 and the third shift driving unit form a shift driving device for switching among a plurality of gears, so that the shift driving device is more complete.
Claims (10)
1. The friction type step-variable transmission with long service life for the vehicle comprises a shell (17), an input shaft (10) and an output shaft (6), wherein the input shaft (10) and the output shaft (6) are respectively and rotatably arranged on the shell (17), and the friction type step-variable transmission is characterized in that the axial direction of the output shaft (6) is not parallel to the axial direction of the input shaft (10), a torque transmission assembly is arranged on the peripheral surface of the input shaft (10), and the friction type step-variable transmission further comprises a first friction assembly (7), a reverse shaft (5), a reverse friction wheel (501), a reverse driving assembly, a first annular friction unit (15) and a first gear shifting driving unit;
the first friction assembly (7) and the output shaft (6) are fixed in the circumferential direction and can axially move along the output shaft (6), the first friction assembly (7) and the reverse gear shaft (5) are fixed, the reverse gear friction wheel (501) and the reverse gear shaft (5) are fixed, and the reverse gear driving assembly is arranged on the reverse gear shaft (5); a first friction disc surface (1501) and a second friction disc surface (1502) are arranged at one end of the first annular friction unit (15), and the first annular friction unit (15) is matched with the torque transmission assembly;
the first gear shifting driving unit is in sliding fit with the shell (17), and when the first gear shifting driving unit drives the first annular friction unit (15) to move and enables the first friction disc surface (1501) to be matched with the first friction assembly (7), a first forward gear is formed among the input shaft (10), the torque transmission assembly, the first annular friction unit (15), the first friction assembly (7) and the output shaft (6);
the reverse gear driving assembly is in sliding fit with the shell (17), the reverse gear driving assembly drives the reverse gear shaft (5) to axially move, the reverse gear shaft (5) drives the first friction assembly (7) to axially move along the output shaft (6), the first friction assembly (7) is not corresponding to the first friction disc surface (1501), the reverse gear friction wheel (501) is corresponding to the second friction disc surface (1502), and after the first gear shifting driving unit drives the first annular friction unit (15) to move and enables the second friction disc surface (1502) to be combined with the reverse gear friction wheel (501), a reverse gear is formed among the input shaft (10) and the torque transmission assembly, the first annular friction unit (15), the reverse gear friction wheel (501), the reverse gear shaft (5), the first friction assembly (7) and the output shaft (6).
2. The long-life friction-type step-variable transmission for vehicles according to claim 1, characterized in that one end of the output shaft (6) is provided with an axial assembly hole (601), the peripheral surface of the output shaft (6) is provided with a radial yielding hole (605), and the yielding hole (605) is communicated with the assembly hole (601);
the first friction assembly (7) comprises a torque transmission block (701), a first friction wheel (702) and a connecting rod (703), wherein the first friction wheel (702) is sleeved on the output shaft (6), a part of the torque transmission block (701) is located in the assembly hole (601), two ends of the torque transmission block (701) penetrate through the yielding hole (605) and are fixed with the first friction wheel (702), one end of the connecting rod (703) is fixed with the torque transmission block (701), and the other end of the connecting rod (703) is fixed with the reverse gear shaft (5).
3. The long-life friction type step-variable transmission for vehicles according to claim 1, wherein the torque transmission assembly provided on the peripheral surface of the input shaft (10) comprises a plurality of arms (1002), a first sleeve (1003) is provided on each arm, a spring (1004) is provided in the first sleeve (1003), one end of the spring (1004) is fixed to the first sleeve (1003), and the other end of the spring (1004) is connected to the first annular friction unit (15).
4. The long-life friction-type step-variable transmission for vehicles according to claim 1, wherein the reverse gear driving assembly comprises a first bearing (3), a second bearing (4), a reverse gear driving block (502) and a reverse gear shifting fork (9), the first bearing (3), the second bearing (4) and the reverse gear driving block (502) are respectively arranged on a reverse gear shaft (5), the reverse gear driving block (502) is positioned between the first bearing (3) and the second bearing (4), and the reverse gear shifting fork (9) is respectively matched with the first bearing (3) and the second bearing (4).
5. The long-life friction type step-variable transmission for vehicles according to claim 1, wherein the first annular friction unit (15) comprises a first friction ring (150), a first torque transmission rod (1503), a first connecting rod (1504), a first thrust member (1505), the first friction plate surface (1501) and the second friction plate surface (1502) are arranged at one end of the first friction ring (150), the first friction ring (150) is connected with the first thrust member (1505) through the first connecting rod (1504), one end of the first torque transmission rod (1503) is fixed at the other end of the first friction ring (150), and the other end of the first torque transmission rod (1503) is matched with the torque transmission assembly.
6. A long life friction type step-variable transmission for vehicles according to claim 1, characterized in that the first shift driving unit comprises a first thrust bearing (1201), a first shift push rod (1202), one end of the first thrust bearing (1201) being for engagement with or disengagement from the first annular friction unit (15), the other end of the first thrust bearing (1201) being fixed to the first shift push rod (1202).
7. The long-life friction-type step-variable transmission for vehicles according to any one of claims 1 to 6, further comprising a second friction wheel (603), a second annular friction unit (16), a second gearshift driving unit, the second friction wheel (603) being fixed to the output shaft (6), a first annular friction unit (15) surrounding the second annular friction unit (16), the second annular friction unit (16) being connected to the torque transmission assembly, one end of the second annular friction unit (16) being provided with a third friction disc surface (1601);
the second gear shifting driving unit is in sliding fit with the shell (17), and after driving the second annular friction unit (16) to move and enabling the third friction disc surface (1601) to be matched with the second friction wheel (603), a second forward gear is formed among the input shaft (10), the torque transmission assembly, the second annular friction unit (16), the second friction wheel (603) and the output shaft (6).
8. A long life friction type step variable transmission for vehicles according to claim 7, characterized in that the second annular friction unit (16) comprises: the second friction ring (160), a second moment transmission rod (1602), a second connecting rod (1603) and a second thrust component (1604), wherein a third friction disc surface (1601) is arranged at one end of the second friction ring (160), the second friction ring (160) is connected with the second thrust component (1604) through the second connecting rod (1603), one end of the second moment transmission rod (1602) is fixed at the other end of the second friction ring (160), and the other end of the second moment transmission rod (1602) is matched with the moment transmission component;
the second shift drive unit includes: and one end of the second thrust bearing (1101) is used for being combined with or separated from the second annular friction unit (16), and the other end of the second thrust bearing (1101) is fixed with the second gear shifting push rod (1102).
9. The long-life friction type step-variable transmission for vehicles according to any one of claims 1 to 6, further comprising a third friction wheel (602), a third annular friction unit (14), a third gearshift driving unit, the third friction wheel (602) being fixed to the output shaft (6), the third annular friction unit (14) surrounding the first annular friction unit (15), the third annular friction unit (14) being connected to the torque transmission assembly, one end of the third annular friction unit (14) being provided with a fourth friction disc surface (1401);
the third gear shifting driving unit is in sliding fit with the shell (17), and after driving the third annular friction unit (14) to move and enabling the fourth friction disc surface (1401) to be matched with the third friction wheel (602), a third forward gear is formed among the input shaft (10), the torque transmission assembly, the third annular friction unit (14), the third friction wheel (602) and the output shaft (6).
10. A long life friction type step variable transmission for vehicles according to claim 9, characterized in that the third annular friction unit (14) comprises: the third friction ring (140), a third torque transmission rod (1402), a third connecting rod (1403) and a third thrust component (1404), wherein the fourth friction disk surface (1401) is arranged at one end of the third friction ring (140), the third friction ring (140) is connected with the third thrust component (1404) through the third connecting rod (1403), one end of the third torque transmission rod (1402) is fixed at the other end of the second friction ring (140), and the other end of the third torque transmission rod (1402) is matched with the torque transmission component;
the third shift drive unit includes: and a third thrust bearing (1301) and a third shift push rod (1302), wherein one end of the third thrust bearing (1301) is used for being combined with or separated from the third annular friction unit (14), and the other end of the third thrust bearing (1301) is fixed with the second shift push rod (1302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310552826.8A CN116592102A (en) | 2023-05-17 | 2023-05-17 | Friction type step-variable transmission with long service life for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310552826.8A CN116592102A (en) | 2023-05-17 | 2023-05-17 | Friction type step-variable transmission with long service life for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116592102A true CN116592102A (en) | 2023-08-15 |
Family
ID=87611024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310552826.8A Pending CN116592102A (en) | 2023-05-17 | 2023-05-17 | Friction type step-variable transmission with long service life for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116592102A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329280A (en) * | 2023-10-12 | 2024-01-02 | 武汉理工大学 | Friction speed changer |
-
2023
- 2023-05-17 CN CN202310552826.8A patent/CN116592102A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329280A (en) * | 2023-10-12 | 2024-01-02 | 武汉理工大学 | Friction speed changer |
| CN117329280B (en) * | 2023-10-12 | 2024-04-30 | 武汉理工大学 | Friction speed changer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5560461A (en) | Multiple cone synchronizer for vehicle transmission | |
| US6461268B1 (en) | Continuously variable transmission device | |
| CN109990057B (en) | Mechanical type double-overrunning clutch main shaft output self-adaptive automatic transmission | |
| CN109899509B (en) | Self-adaptive automatic speed-changing electric drive system with mechanical double-overrunning clutch main shaft output | |
| JP2015532968A (en) | Selection of drive member | |
| JPS627419B2 (en) | ||
| CN112503108A (en) | Intermediate shaft clutch mechanism | |
| US20040163917A1 (en) | Synchronizer for speed reducer | |
| CN116592102A (en) | Friction type step-variable transmission with long service life for vehicle | |
| US20170158052A1 (en) | Transfer case having a four wheel drive locking mechanism | |
| US5845754A (en) | Shift synchronizer for two speed transfer case and the like | |
| US6189397B1 (en) | Multi-speed automotive transmission using paired helical gearing | |
| CA3049701C (en) | Six-gear automatic transmission for automobile with brushless control-by-wire centrifugal ball arm engagement device | |
| US9719564B2 (en) | Synchronizer re-energization for improved cold shift comfort | |
| CN219827618U (en) | Power output unit of friction type step-variable transmission for vehicle | |
| CN219795991U (en) | Gear shifting driving device of friction type step-variable transmission for vehicle | |
| CN105485262A (en) | Two-gear transmission for electric vehicle | |
| US5862900A (en) | Transmission synchronizer mechanism | |
| EP3011206B1 (en) | System and method for actuating a mechanical diode clutch assembly | |
| EP3372868B1 (en) | Electric vehicle three-gear automatic transmission with brushless x-by-wire centrifugal ball arm engagement device | |
| KR900001636B1 (en) | Assembly for canstituting a stepless speed change gear of friction-drive type | |
| JP2581965B2 (en) | Power transmission device | |
| CN2929320Y (en) | Tension ring type overdrive clutch | |
| US9022194B2 (en) | System and method for actuating a mechanical diode clutch assembly | |
| JPH11101269A (en) | Synchronizer of manual transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |