CN110725905A - Electric automobile and double-speed gearbox thereof - Google Patents

Electric automobile and double-speed gearbox thereof Download PDF

Info

Publication number
CN110725905A
CN110725905A CN201810784845.2A CN201810784845A CN110725905A CN 110725905 A CN110725905 A CN 110725905A CN 201810784845 A CN201810784845 A CN 201810784845A CN 110725905 A CN110725905 A CN 110725905A
Authority
CN
China
Prior art keywords
speed
low
clutch
conical surface
driven gear
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
Application number
CN201810784845.2A
Other languages
Chinese (zh)
Inventor
王志东
翟战军
姚伟杰
杨建伟
古成超
王龙涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HENAN RUIGE TRANSMISSION MACHINERY CO Ltd
Original Assignee
HENAN RUIGE TRANSMISSION MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HENAN RUIGE TRANSMISSION MACHINERY CO Ltd filed Critical HENAN RUIGE TRANSMISSION MACHINERY CO Ltd
Priority to CN201810784845.2A priority Critical patent/CN110725905A/en
Publication of CN110725905A publication Critical patent/CN110725905A/en
Pending legal-status Critical Current

Links

Images

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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H2003/0811—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts using unsynchronised clutches
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H2003/0818—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts comprising means for power-shifting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses a double-speed gearbox, comprising: the power output of the motor is transmitted by the input shaft; the input shaft is provided with a high-speed driving gear and a low-speed driving gear, and the output shaft is provided with a high-speed driven gear and a low-speed driven gear; the conical surface sleeve is sleeved on the output shaft in a sliding manner, and a first conical surface and a second conical surface which are expanded outwards are arranged in the conical surface sleeve; the low-speed clutch component and the high-speed clutch component are symmetrically arranged on two sides of the conical surface sleeve and respectively comprise a clutch support, a V-shaped gear shifting lever and clutch dynamic and static friction plates. The high-speed and low-speed change function can be realized through the conical surface sleeve and the high-speed and low-speed gear shifting lever, and the requirement for stable gear shifting can be realized through the plate type combination and separated gear shifting mode of the high-speed and low-speed clutch dynamic and static friction plates. The invention also discloses an electric automobile comprising the double-speed gearbox.

Description

Electric automobile and double-speed gearbox thereof
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an electric automobile and a double-speed gearbox thereof.
Background
The existing electric automobile driving system is usually single-speed transmission, namely, a motor speed regulation controller is used for controlling the rotating speed of a motor, so that high-speed and low-speed changes of the running speed of a vehicle are realized.
Because the optimal rotating speed range of the motor is limited, the requirement of a wider rotating speed range when a vehicle runs cannot be met, so that when the motor works in a low-speed effective range, the motor cannot run at a high speed and can work in an optimal interval. If the motor is set to the high-speed optimum rotating speed range, the optimum working state of operation at low speed cannot be achieved, that is, the speed adjustment between low speed and high speed cannot be realized, which may result in increased power consumption and influence on the endurance mileage.
The existing two-speed transmissions typically employ a synchronous shift mode of a manual transmission with a splined connection of the clutch for power transmission. During high-low speed conversion, the motor is easy to generate pause and contusion due to high rotating speed, so that the driving experience is influenced; in addition, when the gear is shifted in a high-speed state, the abrasion of a synchronizer is large, and although the requirement of speed change is met, the structure is high in noise and easy to damage.
Therefore, how to ensure the smoothness of the power transmission of the gearbox is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide an electric automobile and a double-speed gearbox thereof, which can effectively solve the problems of poor power transmission stability and the like.
In order to solve the technical problems, the invention provides the following technical scheme:
a two-speed transmission comprising: the clutch comprises an input shaft, an output shaft, a conical surface sleeve, a low-speed clutch component and a high-speed clutch component;
the input shaft is provided with a low-speed driving gear and a high-speed driving gear along the axial direction, the output shaft is provided with a low-speed driven gear meshed with the low-speed driving gear and a high-speed driven gear meshed with the high-speed driving gear along the axial direction, and the low-speed driven gear and the high-speed driven gear are mounted on the output shaft through bearings;
the conical surface sleeve is sleeved on the output shaft in a sliding mode and is positioned between the low-speed driven gear and the high-speed driven gear, a first conical surface which is expanded outwards is arranged on one side of an inner hole of the conical surface sleeve, and a second conical surface which is expanded outwards is arranged on the other side of the inner hole of the conical surface sleeve;
the low-speed clutch assembly and the high-speed clutch assembly are symmetrically arranged on two sides of the conical surface sleeve and respectively comprise a clutch support, a V-shaped gear shifting lever and clutch dynamic and static friction plates, the clutch support is sleeved on the output shaft, the bending part of the V-shaped gear shifting lever is hinged on the clutch support, one end of the V-shaped gear shifting lever of the low-speed clutch assembly is in contact with the first conical surface, one end of the V-shaped gear shifting lever of the high-speed clutch assembly is in contact with the second conical surface, the other end of the V-shaped gear shifting lever is in contact with one side, far away from the conical surface sleeve, of the clutch dynamic and static friction plates, and the clutch dynamic and static friction plates are fixed on the end surface of the clutch support;
the low-speed driven gear with one side that high-speed driven gear is relative is equipped with annular bulge, separation and reunion sound friction piece is located annular bulge's inboard, works as separation and reunion sound friction piece quilt when the V type lever of shifting compresses tightly, the periphery and the annular bulge's inboard in close contact with of separation and reunion sound friction piece, so that low-speed driven gear or high-speed driven gear drives the driven shaft rotates.
Preferably, one end of each of the low-speed V-shaped gear shifting lever and the high-speed V-shaped gear shifting lever is provided with a roller which is in contact with the conical surface sleeve.
Preferably, the low-speed V-shaped gear shift lever and the high-speed V-shaped gear shift lever are provided at both ends thereof with bent portions folded inwards.
Preferably, the low-speed clutch support is hinged with a plurality of low-speed V-shaped gear shifting levers which are uniformly distributed along the circumferential direction of the low-speed clutch support, and the high-speed clutch support is hinged with a plurality of high-speed V-shaped gear shifting levers which are uniformly distributed along the circumferential direction of the high-speed clutch support.
Preferably, be equipped with first U type groove on the low-speed clutch support, the low-speed V type lever of shifting passes through the articulated shaft and articulates the lateral wall in first U type groove, be equipped with second U type groove on the high-speed clutch support, the high-speed V type lever of shifting passes through the articulated shaft and articulates on the lateral wall in second U type groove.
Preferably, the outer side wall of the conical surface sleeve is provided with a shifting ring, the outer side wall of the conical surface sleeve is provided with an outer groove, the inner side wall of the shifting ring is provided with an inner groove, and the outer groove and the inner groove form an annular chamber for accommodating balls.
An electric vehicle comprising a two-speed transmission as described in any one of the preceding claims.
Compared with the prior art, the technical scheme has the following advantages:
the invention provides an electric automobile and a double-speed gearbox thereof, comprising: the power output of the motor is transmitted by the input shaft; the input shaft is provided with a high-speed driving gear and a low-speed driving gear, and the output shaft is provided with a high-speed driven gear and a low-speed driven gear; the conical surface sleeve is sleeved on the output shaft in a sliding manner, and a first conical surface and a second conical surface which are expanded outwards are arranged in the conical surface sleeve; the low-speed clutch component and the high-speed clutch component are symmetrically arranged on two sides of the conical surface sleeve and respectively comprise a clutch support, a V-shaped gear shifting lever and clutch dynamic and static friction plates. The high-speed and low-speed change function can be realized through the conical surface sleeve and the high-speed and low-speed gear shifting lever, and the requirement for stable gear shifting can be realized through the plate type combination and separated gear shifting mode of the high-speed and low-speed clutch dynamic and static friction plates.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a two-speed transmission in accordance with one embodiment of the present invention;
FIG. 2 is a side view of section A-A of FIG. 1;
FIG. 3 is an enlarged schematic view of region I of FIG. 1;
FIG. 4 is an enlarged schematic view of region II in FIG. 1;
fig. 5 is a schematic structural view of the V-shaped shift lever of fig. 1.
The reference numbers are as follows:
1 is an input shaft, 2 is a low-speed driving gear, 3 is a low-speed driven gear, 4 is a low-speed clutch dynamic friction plate, 5 and 17 are annular separation elastic sheets, 6 is a low-speed clutch static friction plate, 7 and 15 are elastic gaskets, 8 is a low-speed clutch support, 9 is a low-speed V-shaped gear shifting lever, 10 is a conical surface sleeve, 11 is a high-speed driving gear, 12 is a high-speed V-shaped gear shifting lever, 13 is a high-speed driven gear, 14 is a high-speed clutch support, 16 is a high-speed clutch dynamic friction plate, 18 is a high-speed clutch static friction plate, 19 is a secondary driving gear, 20 is an output shaft, 21 is a secondary driven gear, 22 is a roller, 23 is a ball and 24 is a gear shifting ring.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1-5, fig. 1 is a cross-sectional view of a two-speed transmission in accordance with one embodiment of the present invention; FIG. 2 is a side view of section A-A of FIG. 1; FIG. 3 is an enlarged schematic view of region I of FIG. 1; FIG. 4 is an enlarged schematic view of region II in FIG. 1; fig. 5 is a schematic structural view of the V-shaped shift lever of fig. 1.
One embodiment of the present invention provides a two-speed transmission, comprising: the power output of the motor is transmitted by the input shaft 1; the input shaft 1 is provided with a low-speed driving gear 2 and a high-speed driving gear 11 along the axial direction, the output shaft 20 is provided with a low-speed driven gear 3 meshed with the low-speed driving gear 2 and a high-speed driven gear 13 meshed with the high-speed driving gear 11 along the axial direction, the low-speed driven gear 3 and the high-speed driven gear 13 are arranged on the output shaft 20 through bearings, and in addition, the output shaft 20 is also provided with a secondary driving gear 19 to drive a secondary driven gear 21 so as to drive a vehicle to run; the conical surface sleeve 10 is sleeved on the output shaft 20 in a sliding manner and is positioned between the low-speed driven gear 3 and the high-speed driven gear 13, one side of an inner hole of the conical surface sleeve 10 is provided with a first conical surface expanding outwards, and the other side of the inner hole is provided with a second conical surface expanding outwards; the low-speed clutch component and the high-speed clutch component are symmetrically arranged on two sides of the conical surface sleeve 10 and respectively comprise a clutch support, a V-shaped gear shifting lever and clutch dynamic and static friction plates, the clutch support is sleeved on the output shaft 20, the bending part of the V-shaped gear shifting lever is hinged on the clutch support, one end of the V-shaped gear shifting lever of the low-speed clutch component is contacted with a first conical surface, one end of the V-shaped gear shifting lever of the high-speed clutch component is contacted with a second conical surface, the other end of the V-shaped gear shifting lever is contacted with one side of the clutch dynamic and static friction plates, which is far away from the conical surface sleeve 10, the clutch dynamic and static friction plates are fixed on the end surface of the clutch support, specifically, the low-speed clutch component comprises a low-speed clutch support 8, a low-speed clutch support 9 and a low-speed clutch dynamic and static friction plate, the low-speed clutch support, the bending part of the low-speed clutch support 9 is hinged on the low-speed clutch support 8, one end of the low-speed clutch support 9 is in contact with the first conical surface, the other end of the low-speed clutch support 9 is in contact with one side, far away from the conical surface sleeve 10, of the low-speed clutch dynamic and static friction plate, and the low-speed clutch dynamic and static friction plate is fixed on the end surface of the low-speed clutch support 8; the high-speed clutch component comprises a high-speed clutch support 14, a high-speed V-shaped gear shifting lever 12 and high-speed clutch dynamic and static friction plates, the high-speed clutch support 14 is sleeved on the output shaft 20 and is positioned between the high-speed driven gear 13 and the conical surface sleeve 10, the bending part of the high-speed V-shaped gear shifting lever 12 is hinged on the high-speed clutch support 14, one end of the high-speed V-shaped gear shifting lever 12 is in contact with the second conical surface, the other end of the high-speed V-shaped gear shifting lever is in contact with one side, far away from the conical surface sleeve 10, of the high-speed clutch dynamic and static; the low-speed driven gear and the high-speed driven gear are opposite, an annular bulge is arranged on one side, the clutch dynamic and static friction plates are located on the inner side of the annular bulge, and when the clutch dynamic and static friction plates are pressed tightly by the V-shaped gear shifting lever, the periphery of the clutch dynamic and static friction plates is in close contact with the inner side of the annular bulge, so that the low-speed driven gear or the high-speed driven gear drives the driven shaft to rotate.
In this embodiment, when the driven shaft needs to rotate at a low speed, the conical surface sleeve 10 can be controlled to slide towards the low-speed driven gear, the first conical surface of the conical surface sleeve 10 pushes the low-speed clutch support 9 to rotate so as to compress the low-speed clutch dynamic and static friction plates, the high-speed clutch dynamic and static friction plates are released at the same time, the high-speed driven gear idles, and the low-speed driven gear drives the low-speed clutch support 8 to rotate through the compressed low-speed clutch dynamic and static friction plates so as to drive the driven shaft to rotate at a low speed; when the driven shaft is required to rotate at a high speed, when the conical surface sleeve 10 can be controlled to slide towards the high-speed driven gear, the high-speed V-shaped gear shifting lever 12 is pushed to rotate by the second conical surface of the conical surface sleeve 10 to compress the high-speed clutch dynamic and static friction plates, and simultaneously, the low-speed clutch dynamic and static friction plates are released, the low-speed driven gear idles, the high-speed clutch support 14 is driven to rotate by the high-speed driven gear through the compressed high-speed clutch dynamic and static friction plates, so that the driven shaft is driven to rotate at a high speed, and how to transmit the power from the driven gear to the driven shaft through the compressed clutch dynamic and static friction plates can be. The high-low speed change function can be realized through conical surface cover 10 and high, low speed gear shift lever to this embodiment, by the piece formula combination of high, low-speed separation and reunion sound friction disc and the mode of shifting of separation, can realize the steady demand of shifting gears.
Further, the low clutch carrier 9 and one end of the high speed V-shaped shift lever 12 are provided with rollers 22 that contact the taper sleeve 10. The friction between the V-shaped gear shifting levers can be reduced through the rollers 22, so that the abrasion of parts is reduced, and the service life of the gearbox is prolonged.
Specifically, the low-speed clutch bracket 9 and the high-speed V-shaped shift lever 12 are provided with bent portions at both ends thereof. The gear shifting lever is convenient to compress the clutch dynamic and static friction plates through the bending part, and the conical surface of the conical surface sleeve 10 is convenient to push the gear shifting lever to rotate. Wherein the length of the rod body contacting with the conical surface is preferably longer than the length of the rod body contacting with the clutch dynamic and static friction plate.
In order to optimize the using effect of the low-speed clutch assembly and the high-speed clutch assembly of the above embodiment, in the present embodiment, a plurality of low-speed clutch brackets 9 are hinged on the low-speed clutch bracket 8 and are uniformly distributed along the circumferential direction of the low-speed clutch brackets 9, and a plurality of high-speed V-shaped shift levers 12 are hinged on the high-speed clutch bracket 14 and are uniformly distributed along the circumferential direction of the high-speed clutch bracket. Wherein each preferred setting is 4 to guarantee that the lever of shifting compresses tightly separation and reunion sound friction disc.
Specifically, a first U-shaped groove is formed in the low-speed clutch support 8, the low-speed clutch support 9 is hinged to the side wall of the first U-shaped groove through a hinged shaft, a second U-shaped groove is formed in the high-speed clutch support 14, and the high-speed V-shaped gear shifting lever 12 is hinged to the side wall of the second U-shaped groove through a hinged shaft. Wherein 8 sleeves of high-speed and low-speed clutch support and the disc of setting in the sleeve one end outside are equipped with two flat boards with presetting interval parallel arrangement on the telescopic lateral wall, the both sides that two flat boards are adjacent are the rigid coupling respectively on the terminal surface of disc and telescopic lateral wall, two flat boards constitute above-mentioned U type recess, when a plurality of levers of shifting, can set up the flat board of corresponding group number, still should be equipped with the through-hole that the one end that supplies the lever of shifting passed on the disc in addition, the aperture of this through-hole should be greater than the rotation range of the lever of shifting.
In addition, the outer side wall of the conical surface sleeve 10 is provided with a shifting ring 24, the outer side wall of the conical surface sleeve 10 is provided with an outer groove, the inner side wall of the shifting ring is provided with an inner groove, and the outer groove and the inner groove form an annular chamber for accommodating the ball 23. In which one part of the balls 23 is located in the inner groove and the other part is located in the outer groove, so that the shift ring 24 transmits the shifting force.
In order to compensate for the increased distance between the clutch dynamic and static friction plates caused by abrasion, the low-speed clutch dynamic and static friction plates comprise a low-speed clutch dynamic and static friction plate 4 and a low-speed clutch static and static friction plate 6, the high-speed clutch dynamic and static friction plate comprises a high-speed clutch dynamic and static friction plate 16 and a high-speed clutch static and static friction plate 18, the low-speed clutch dynamic and static friction plates and the high-speed clutch dynamic and static friction plates have the same structure and are hereinafter referred to as clutch dynamic and static friction plates, annular separation elastic sheets 5 and 17 are arranged between the adjacent clutch dynamic and static friction plates, and an elastic compensation device is arranged on the outer side of one. The clutch dynamic and static friction plates comprise a plurality of clutch dynamic friction plates and a plurality of clutch static friction plates, the clutch dynamic friction plates and the clutch static friction plates are arranged in a crossed mode, the inner diameter of each clutch static friction plate is smaller than that of each clutch dynamic friction plate, and the annular separation elastic sheet is located between the adjacent clutch dynamic friction plates and is located close to the inner hole of the separation elastic sheet. The elastic compensation device can control the distance between the clutch dynamic friction plates to be always in a required value, namely when the distance between the clutch dynamic friction plates is increased, the elastic compensation device can control the clutch dynamic friction plates to be close to each other so as to compensate the trend of increasing the distance, wherein the elastic compensation device can be elastic gaskets 7 and 15 or a compression spring. The clutch can smoothly realize the clutch function by ensuring the distance between the clutch movable friction plates, thereby ensuring the working stability of the clutch.
An embodiment of the invention further provides an electric vehicle comprising a two-speed transmission as described in any of the above embodiments. The beneficial effects of the double-speed gearbox can be achieved by referring to the double-speed gearbox, and the description is omitted here.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A two-speed transmission, comprising: the clutch comprises an input shaft, an output shaft, a conical surface sleeve, a low-speed clutch component and a high-speed clutch component;
the input shaft is provided with a low-speed driving gear and a high-speed driving gear along the axial direction, the output shaft is provided with a low-speed driven gear meshed with the low-speed driving gear and a high-speed driven gear meshed with the high-speed driving gear along the axial direction, and the low-speed driven gear and the high-speed driven gear are mounted on the output shaft through bearings;
the conical surface sleeve is sleeved on the output shaft in a sliding mode and is positioned between the low-speed driven gear and the high-speed driven gear, a first conical surface which is expanded outwards is arranged on one side of an inner hole of the conical surface sleeve, and a second conical surface which is expanded outwards is arranged on the other side of the inner hole of the conical surface sleeve;
the low-speed clutch assembly and the high-speed clutch assembly are symmetrically arranged on two sides of the conical surface sleeve and respectively comprise a clutch support, a V-shaped gear shifting lever and clutch dynamic and static friction plates, the clutch support is sleeved on the output shaft, the bending part of the V-shaped gear shifting lever is hinged on the clutch support, one end of the V-shaped gear shifting lever of the low-speed clutch assembly is in contact with the first conical surface, one end of the V-shaped gear shifting lever of the high-speed clutch assembly is in contact with the second conical surface, the other end of the V-shaped gear shifting lever is in contact with one side, far away from the conical surface sleeve, of the clutch dynamic and static friction plates, and the clutch dynamic and static friction plates are fixed on the end surface of the clutch support;
the low-speed driven gear with one side that high-speed driven gear is relative is equipped with annular bulge, separation and reunion sound friction piece is located annular bulge's inboard, works as separation and reunion sound friction piece quilt when the V type lever of shifting compresses tightly, the periphery and the annular bulge's inboard in close contact with of separation and reunion sound friction piece, so that low-speed driven gear or high-speed driven gear drives the driven shaft rotates.
2. The two speed transmission of claim 1 wherein one end of each of said low speed and high speed V shift levers is provided with a roller that contacts said conical sleeve.
3. The two speed transmission of claim 2 wherein the low speed V shift lever and the high speed V shift lever are each provided with an inwardly folded bend at each end.
4. The two speed transmission of claim 1, wherein said low clutch carrier has a plurality of said low speed V-shaped shift levers evenly distributed circumferentially thereon, and said high clutch carrier has a plurality of said high speed V-shaped shift levers evenly distributed circumferentially thereon.
5. A two speed transmission as in claim 4 wherein said low clutch carrier has a first U-shaped channel and said low speed V-shaped shift lever is pivotally connected to a side wall of said first U-shaped channel by a pivot shaft and said high clutch carrier has a second U-shaped channel and said high speed V-shaped shift lever is pivotally connected to a side wall of said second U-shaped channel by a pivot shaft.
6. A two-speed gearbox according to any of claims 1 to 5, wherein the outer side wall of said conical sleeve is provided with a shifting dial ring, the outer side wall of said conical sleeve is provided with an outer groove, the inner side wall of said shifting dial ring is provided with an inner groove, said outer groove and said inner groove form an annular chamber for receiving balls.
7. An electric vehicle comprising a two-speed transmission according to any of claims 1 to 6.
CN201810784845.2A 2018-07-17 2018-07-17 Electric automobile and double-speed gearbox thereof Pending CN110725905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810784845.2A CN110725905A (en) 2018-07-17 2018-07-17 Electric automobile and double-speed gearbox thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810784845.2A CN110725905A (en) 2018-07-17 2018-07-17 Electric automobile and double-speed gearbox thereof

Publications (1)

Publication Number Publication Date
CN110725905A true CN110725905A (en) 2020-01-24

Family

ID=69217508

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810784845.2A Pending CN110725905A (en) 2018-07-17 2018-07-17 Electric automobile and double-speed gearbox thereof

Country Status (1)

Country Link
CN (1) CN110725905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178172A (en) * 2020-09-18 2021-01-05 安徽江淮汽车集团股份有限公司 Double-clutch multi-gear gearbox and electric automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112178172A (en) * 2020-09-18 2021-01-05 安徽江淮汽车集团股份有限公司 Double-clutch multi-gear gearbox and electric automobile

Similar Documents

Publication Publication Date Title
CN110725905A (en) Electric automobile and double-speed gearbox thereof
CN103697125A (en) Stepless speed change gear
CN104879397B (en) Wet-type dual-clutch
CN109555828B (en) Rolling type continuously variable transmission
US8322243B2 (en) Transmission with reverse idler gear brake
CN208457121U (en) A kind of electric car and its double-velocity transmission
CN112377584A (en) Friction type mechanical stepless speed changer
CN203604488U (en) Stepless speed change clutch for motorcycle
EP1809927A1 (en) Noise damper for a driven pulley of a continuously variable transmission
US20210332860A1 (en) Clutch and automobile having the same
CN214823916U (en) Manual-automatic integrated speed-changing driving device for electric vehicle
WO2018157806A1 (en) Continuously variable transmission
CN208669998U (en) A kind of one-way belt sheave of low secondary friction torsional spring structure
CN219692151U (en) Novel speed change structure
CN219570774U (en) Double-speed gearbox
CN216895452U (en) Gear engagement self-adjusting device
CN214999207U (en) Vehicle coordinated speed change driving device
CN219317547U (en) Toothed belt wheel and steel belt transmission mechanism of CVT transmission
CN211852074U (en) Take agricultural plunger pump of automatic rolling function
CN220947101U (en) Printing roller mounting structure
CN221017982U (en) Roller way structure capable of adapting to large speed range
CN112096802B (en) Gearbox with uninterrupted gear shifting torque and gear shifting method
CN208457059U (en) A kind of multiplate clutch folding tapered sleeve
CN208083080U (en) A kind of multiple drawing machine transmission mechanism
CN110725940A (en) Gear box

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