CN118076818A - Variable speed transmission device and vehicle - Google Patents

Variable speed transmission device and vehicle Download PDF

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Publication number
CN118076818A
CN118076818A CN202280008230.5A CN202280008230A CN118076818A CN 118076818 A CN118076818 A CN 118076818A CN 202280008230 A CN202280008230 A CN 202280008230A CN 118076818 A CN118076818 A CN 118076818A
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CN
China
Prior art keywords
gear
clutch
transmission
variable speed
output
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
CN202280008230.5A
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Chinese (zh)
Inventor
吴凯
庄朝晖
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.)
Contemporary Amperex Technology Co Ltd
Contemporary Amperex Intelligence Technology Shanghai Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Contemporary Amperex Intelligence Technology Shanghai 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 Contemporary Amperex Technology Co Ltd, Contemporary Amperex Intelligence Technology Shanghai Ltd filed Critical Contemporary Amperex Technology Co Ltd
Publication of CN118076818A publication Critical patent/CN118076818A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • 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
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/10—Braking arrangements

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

Abstract

The embodiment of the application provides a variable speed transmission device and a vehicle. The variable speed transmission device comprises a driving piece, a first transmission piece, an output piece and a clutch assembly, wherein the driving piece is provided with a rotating shaft; the first transmission piece is connected with the rotating shaft of the driving piece; the clutch assembly includes a first clutch for connecting the shaft and the output member and a second clutch for connecting the first transmission member and the output member. The embodiment can realize the switching of different gear transmission modes, and the first transmission part has simple structure, reduces the use of gears, ensures that the structure of the variable speed transmission device is simpler, and reduces the cost.

Description

Variable speed transmission device and vehicle
Technical Field
The present application relates to the field of vehicle technology, and more particularly, to a variable speed transmission and a vehicle.
Background
The transmission device for a vehicle is a transmission device for coordinating the rotational speed of an engine with the actual running speed of wheels, the output rotational speed of the engine is very high, the maximum power and the maximum torque occur in a certain rotational speed region, and the transmission device can be used for exerting the best performance of the engine. The variable speed transmission may produce different speed ratios between the engine and the wheels during vehicle travel for varying the speed and torque from the engine, which may fix or shift the ratio of the output shaft to the input shaft.
In the development of vehicle technology, how to make the structure of a variable speed transmission device simpler under the premise of ensuring the transmission effect of the variable speed transmission device of a vehicle is an important research direction in the vehicle technology.
Disclosure of Invention
The application provides a variable speed transmission device and a vehicle, which can simplify the structure of the variable speed transmission device on the premise of ensuring the transmission effect of the variable speed transmission device of the vehicle.
In a first aspect, an embodiment of the present application provides a variable speed drive comprising a drive member having a rotational axis, a first drive member, an output member, and a clutch assembly; the first transmission piece is connected with the rotating shaft of the driving piece; the clutch assembly includes a first clutch for connecting the shaft and the output member and a second clutch for connecting the first transmission member and the output member.
In the above scheme, the output piece is used for being connected to the wheel, and the pivot of driving piece is connected with the output piece through first clutch, and when first clutch and output piece were joined, the output power of driving piece was transmitted to the wheel through pivot, first clutch and output piece. The rotating shaft of the driving piece is connected with the first transmission piece, the first transmission piece is connected with the output piece through the second clutch, and when the second clutch is connected with the output piece, the output power of the driving piece is transmitted to the wheels through the rotating shaft, the first transmission piece, the second clutch and the output piece. According to the embodiment, through the use of the first transmission part and different clutches, not only can the switching of different gear transmission modes be realized, but also the number of the transmission parts is reduced, so that the structure of the speed change transmission device is simpler, and the cost is reduced.
In some embodiments, the first transmission member includes a sun gear connected with the rotational shaft of the driving member, a planet gear in external engagement with the sun gear, and a planet carrier connected with the planet gear, and the second clutch includes a first sub-clutch for connecting the planet carrier with the output member.
In the above scheme, the first transmission part is a planetary row, when the first sub-clutch is connected with the output part, the power output by the driving part is transmitted to the wheels through the rotating shaft, the planetary gear, the planetary carrier, the first sub-clutch and the output part, and the rotating speed ratio of the output part can be adjusted through the transmission of the planetary gear and the planetary carrier, so that the wheels rotate according to the preset rotating speed, and the flexibility of the rotating speed transmission device is improved. And the first transmission part has simple structure, reduces the use of gears, further simplifies the variable speed transmission device and reduces the cost.
In some embodiments, the variable speed transmission further comprises a first brake coupled to the planet carrier for controlling the planet carrier braking.
In the scheme, when the first sub-clutch is not required to work, the first brake controls the planet carrier to brake, the planet carrier does not rotate any more, the planet gears can only rotate and cannot revolve, and the rotation speed ratio of the output piece is changed. The control through the first brake is convenient and quick, and the transmission efficiency of the rotating speed transmission device is improved.
In some embodiments, the first transmission further includes a ring gear that is intermeshed with the planetary gears, and the second clutch further includes a second sub-clutch for connecting the ring gear and the output member.
In the scheme, when the second sub-clutch is connected with the output piece, the power output by the driving piece is transmitted to the wheels through the rotating shaft, the planetary gear, the gear ring, the second sub-clutch and the output piece, and the rotating speed ratio of the output piece is different from the rotating speed ratio of the first sub-clutch when the first sub-clutch works through the transmission of the planetary gear and the gear ring, so that the vehicle has three-gear speed change, and the wide speed ratio and the efficiency of the vehicle are improved by increasing the gear of the vehicle.
In some embodiments, the variable speed drive further comprises a second brake coupled to the ring gear for controlling ring gear braking.
In the scheme, when the second sub-clutch is not required to work, the gear ring is controlled to brake through the second brake, the gear ring is not rotated any more, the planet carrier can rotate at the moment, the planet gears can revolve and rotate, the planet carrier is connected with the output piece through the first sub-clutch, and the control through the second brake is convenient and quick, so that the transmission efficiency of the rotating speed transmission device is improved.
In some embodiments, the planetary gear includes a first sub-gear and a second sub-gear that are interconnected, the first sub-gear being in outer mesh with the sun gear and the second sub-gear being in inner mesh with the ring gear.
In the scheme, the planetary gear is a duplex gear, the first sub gear and the second sub gear are coaxial and are separated by a certain distance to form an integrated structure, the rotating speed of the output piece can be changed, and the adjustment of various rotating speeds is realized.
In some embodiments, the variable speed drive further includes a differential coupled to the output member, the differential enabling rotation of the left and right (or front and rear) wheels at different rotational speeds, improving vehicle ride and handling.
In some embodiments, the variable speed transmission device further comprises a second transmission member, the differential mechanism is connected with the output member through the second transmission member, and transmission efficiency can be improved through transmission of the second transmission member, so that power of the driving member is conveniently transmitted to the differential mechanism.
In some embodiments, the second transmission member is a transmission gear, the differential is provided with a differential gear, the transmission gear is meshed with the differential gear, and the gear transmission is high in accuracy and efficiency and compact in structure.
An example of a second aspect of the application provides a vehicle comprising a variable speed drive of any of the embodiments described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a variable speed drive provided in accordance with some embodiments of the present application;
FIG. 2 is a schematic power transmission diagram of a variable speed transmission provided in some embodiments of the present application;
FIG. 3 is a schematic structural diagram of a first transmission member according to some embodiments of the present application;
FIG. 4 is a schematic illustration of a variable speed drive provided by further embodiments of the present application;
FIG. 5 is a schematic power transmission diagram of a variable speed transmission provided by other embodiments of the present application;
FIG. 6 is a schematic power transmission diagram of a variable speed transmission provided in accordance with still further embodiments of the present application;
FIG. 7 is a schematic diagram of a planetary gear according to some embodiments of the present application;
Fig. 8 is a schematic view of a variable speed drive provided in accordance with still further embodiments of the present application.
The reference numerals are as follows: a driving member 10; a rotating shaft 11; a first transmission member 20; a sun gear 21; a planetary gear 22; a first sub gear 221; a second sub-gear 222; a carrier 23; a ring gear 24; an output member 30; a clutch assembly 40; a first clutch 41; a second clutch 42; a first sub-clutch 421; a second sub-clutch 422; a first brake 51; a second brake 52; a differential 60; a second transmission member 70.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.
In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. of the various components in the embodiments of the present application shown in the drawings, and the overall thickness, length, width, etc. of the power supply device are merely exemplary and should not be construed as limiting the present application in any way.
The term "plurality" as used herein refers to two or more (including two).
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The inventors have noted that a variable speed transmission of a vehicle is a transmission for coordinating the rotational speed of an engine with the actual running speed of wheels, the output rotational speed of the engine being very high, the maximum power and the maximum torque occurring in a certain rotational speed region, and the variable speed transmission being usable for exerting the best performance of the engine. The variable speed transmission may produce different speed ratios between the engine and the wheels during vehicle travel for varying the speed and torque from the engine, which may fix or shift the ratio of the output member to the input shaft. After further investigation, it has been found that a transmission of a vehicle generally employs a gear drive, such as a slipping gear and a synchronizer, and that, according to the principle of gear drive downshifting, the shifting behavior of the vehicle during driving, i.e., the operation of different gear pair drives in the transmission, is effected by means of an operating mechanism. However, the conventional variable speed transmission device needs more different transmission parts to realize that the gear pair transmission parts with large transmission ratio work at low speed and the gear pair transmission parts with small transmission ratio work at high speed, so that the complexity of the variable speed transmission device is increased and the cost is increased due to the large number of the gear pair transmission parts.
In view of this, the present application provides a solution in which a variable speed transmission includes a driving member having a rotation axis, a first transmission member, an output member, and a clutch assembly; the first transmission piece is connected with the rotating shaft of the driving piece; the clutch assembly includes a first clutch for connecting the shaft and the output member and a second clutch for connecting the first transmission member and the output member.
In the scheme, the rotating shaft of the driving piece is connected with the output piece through the first clutch, and when the first clutch is connected with the output piece, the output power of the driving piece is transmitted to the wheels through the rotating shaft, the first clutch and the output piece. The rotating shaft of the driving piece is connected with the first transmission piece, the first transmission piece is connected with the output piece through the second clutch, and when the second clutch is connected with the output piece, the output power of the driving piece is transmitted to the wheels through the rotating shaft, the first transmission piece, the second clutch and the output piece. According to the embodiment, through the use of the first transmission part and different clutches, not only can the switching of different gear transmission modes be realized, but also the number of the transmission parts is reduced, so that the structure of the speed change transmission device is simpler, and the cost is reduced.
It should be noted that, the variable speed transmission device according to the embodiment of the present application is particularly suitable for being used as a variable speed transmission device of a vehicle, but is not limited to be used as a variable speed transmission device of a vehicle, and if other devices apply the driving member provided by the present application, it should also fall within the protection scope of the present application. The variable speed transmission device of the embodiment of the application can also be applied to ships, aircrafts and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extending vehicle.
FIG. 1 is a schematic view of a variable speed drive provided in accordance with some embodiments of the present application, as shown in FIG. 1, wherein a first aspect of the present application provides a variable speed drive comprising a driving member 10, a first driving member 20, an output member 30, and a clutch assembly 40, the driving member 10 having a rotational axis 11; the first transmission member 20 is connected with the rotating shaft 11 of the driving member 10; the clutch assembly 40 includes a first clutch 41 for connecting the rotary shaft 11 and the output member 30, and a second clutch 42 for connecting the first transmission member 20 and the output member 30.
The driving element 10 can be a motor or an engine, the rotating shaft 11 of the driving element 10 is used as an input shaft to provide power input, when the variable speed transmission device of the application is applied to a new energy electric automobile, the driving element 10 is a motor, and when the variable speed transmission device of the application is applied to a fuel automobile or a fuel gas automobile, the driving element 10 is an engine. The first transmission member 20 may be a gear pair, a planetary gear set, or the like, which are engaged with each other, and is connected to the second clutch 42 by a first transmission member 20 to simplify the structure of the variable speed transmission. The output 30 may be an output shaft or an output flange or the like for connection to a wheel. The clutch is similar to a switch, and the driving part and the driven part of the clutch can be separated temporarily and combined gradually, and the relative rotation is possible during the transmission process. The clutch of the present embodiment may be an electromagnetic clutch, a magnetic powder clutch, a friction clutch, a hydraulic clutch, or the like.
Fig. 2 is a power transmission schematic diagram of a variable speed transmission device according to some embodiments of the present application, as shown in fig. 2, a rotating shaft 11 of a driving member 10 is connected to an output member 30 through a first clutch 41, and when the first clutch 41 is engaged with the output member 30, the output power of the driving member 10 is transmitted to wheels through the rotating shaft 11, the first clutch 41 and the output member 30. The rotation shaft 11 of the driving member 10 is connected with the first transmission member 20, the first transmission member 20 is connected with the output member 30 through the second clutch 42, and when the second clutch 42 is engaged with the output member 30, the output power of the driving member 10 is transmitted to the wheels through the rotation shaft 11, the first transmission member 20, the second clutch 42 and the output member 30. The first transmission member 20 and the different clutches are used to realize the switching of different gear transmission modes, and the first transmission member 20 has a simple structure, reduces the number of transmission members, ensures that the structure of the variable speed transmission device is simpler, and reduces the cost.
In some embodiments, as shown in fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of a first transmission member provided in some embodiments of the present application, and fig. 4 is a schematic diagram of a variable speed transmission device provided in other embodiments of the present application. The first transmission member 20 includes a sun gear 21, a planetary gear 22, and a carrier 23, the sun gear 21 is connected to the rotating shaft 11 of the driving member 10, the planetary gear 22 is externally engaged with the sun gear 21, the carrier 23 is connected to the planetary gear 22, and the second clutch 42 includes a first sub-clutch 421, and the first sub-clutch 421 is used to connect the carrier 23 with the output member 30.
The first transmission member 20 is a planetary gear set, and a gear mechanism formed by revolution of the planetary gears 22 around the sun gear 21 and autorotation thereof is adopted, the number of the planetary gears 22 may be plural, the number of the planetary gears 22 depends on the design load of the speed change transmission device, and the load is borne more as the number is higher. The sun gear 21 of the first transmission member 20 is located in the middle, and a plurality of first transmission members 20 are arranged around the sun gear 21 with a common carrier 23 therebetween, and the planetary gears 22 are fixed to the carrier 23, specifically by being supported by the planetary gears 22. In addition to being able to rotate around its own axis of rotation, the planet gears 22 rotate with the planet carrier 23 around the axis of the sun gear 21. The rotation of the planetary gear 22 about its own axis is referred to as "rotation", and the rotation about the axis of the sun gear 21 is referred to as "revolution".
The sun gear 21 of this embodiment may be sleeved on the outer periphery of the rotating shaft 11 of the driving member 10, the first sub-clutch 421 is engaged with the output member 30, the rotating shaft 11 drives the sun gear 21 to rotate, the sun gear 21 drives the planet gear 22 to rotate, the planet gear 22 drives the planet carrier 23 to rotate, the planet carrier 23 drives the first sub-clutch 421 to rotate, the first sub-clutch 421 drives the output member 30 to rotate, and finally the wheels are driven to rotate.
Fig. 5 is a schematic power transmission diagram of a variable speed transmission device according to another embodiment of the present application, as shown in fig. 5, in the above scheme, when the first sub-clutch 421 is engaged with the output member 30, the power output by the driving member 10 is transmitted to the wheels through the rotating shaft 11, the planetary gear 22, the planet carrier 23, the first sub-clutch 421 and the output member 30, and the rotation speed ratio of the output member 30 can be adjusted by the transmission of the planetary gear 22 and the planet carrier 23, so that the wheels rotate according to the preset rotation speed, and the flexibility of the rotation speed transmission device is improved. And the first transmission member 20 has a simple structure, reduces the use of gears, further simplifies the variable speed transmission device and reduces the cost.
In some embodiments, the variable speed drive further comprises a first brake 51, the first brake 51 being connected with the planet carrier 23 for controlling braking of the planet carrier 23.
The brake is a mechanical component having a function of decelerating, stopping, or maintaining a stopped state of a moving member. After the first brake 51 of the present embodiment is operated, the rotation of the carrier 23 may be stopped to disconnect the power transmission.
In the above scheme, when the first sub-clutch 421 is not required to be operated, the first brake 51 controls the braking of the planet carrier 23, the planet carrier 23 does not rotate any more, the planet gear 22 can only rotate and cannot revolve, and the rotation speed ratio of the output member 30 is changed. The control by the first brake 51 is convenient and quick, and the transmission efficiency of the rotation speed transmission device is improved.
In some embodiments, the first transmission 20 further includes a ring gear 24, the ring gear 24 being in meshing engagement with the planet gears 22, and the second clutch 42 further includes a second sub-clutch 422, the second sub-clutch 422 being for connecting the ring gear 24 and the output member 30.
The planetary gear 22 is located at the inner side of the gear ring 24, when the first sub-clutch 421 is engaged with the output member 30, the rotating shaft 11 of the driving member 10 drives the sun gear 21 to rotate, the sun gear 21 drives the planetary gear 22 to rotate, the planetary gear 22 drives the gear ring 24 to rotate, the gear ring 24 drives the second sub-clutch 422 to rotate, the second sub-clutch 422 drives the output member 30 to rotate, and finally the wheels are driven to rotate.
That is, when the first sub-clutch 421 is engaged with the output member 30, the carrier 23 rotates, the ring gear 24 does not rotate, and the planetary gear 22 can revolve along the sun gear 21 and also can rotate; when the second sub-clutch 422 is engaged with the output member 30, the ring gear 24 rotates, the carrier 23 does not rotate, and the planetary gears 22 can only rotate and cannot revolve. The second sub-clutch 422 is therefore engaged with the output member 30 at a lower rotational speed than the first sub-clutch 421 is engaged with the output member 30, and the rotational speed of the output is higher. The first clutch 41 is directly connected to the rotation shaft 11 of the driving member 10 without gear transmission, so that the rotation speed ratio of the first clutch 41 is 1, the rotation speed ratios of the first sub-clutch 421, the second sub-clutch 422, and the first clutch 41 are sequentially reduced, and the output rotation speed is sequentially increased. The first sub-clutch 421 corresponds to the first gear speed, the second sub-clutch 422 corresponds to the second gear speed, and the first clutch 41 corresponds to the third gear speed.
Fig. 6 is a power transmission schematic diagram of a variable speed transmission device according to still another embodiment of the present application, as shown in fig. 6, in the above scheme, when the second sub-clutch 422 is engaged with the output member 30, the power output by the driving member 10 is transmitted to the wheels through the rotating shaft 11, the planetary gear 22, the gear ring 24, the second sub-clutch 422 and the output member 30, and the rotation speed ratio of the output member 30 is different from the rotation speed ratio when the first sub-clutch 421 is operated, so that the vehicle has a three-gear speed change, and the wide speed ratio and efficiency of the vehicle are improved by increasing the gear of the vehicle.
In some embodiments, the variable speed drive also includes a second brake 52, the second brake 52 being coupled to the ring gear 24 for controlling braking of the ring gear 24.
After the second brake 52 of the present embodiment is operated, the rotation of the carrier 23 may be stopped to disconnect the power transmission. When the second sub-clutch 422 is not required to work, the second brake 52 controls the gear ring 24 to brake, the gear ring 24 is not rotated any more, the planet carrier 23 can rotate at the moment, the planet gears 22 can revolve and rotate, the planet carrier 23 is engaged with the output piece 30 through the first sub-clutch 421, and the control through the second brake 52 is convenient and quick, so that the transmission efficiency of the rotating speed transmission device is improved.
Fig. 7 is a schematic diagram of a planetary gear according to some embodiments of the present application, as shown in fig. 7, in some embodiments, the planetary gear 22 includes a first sub-gear 221 and a second sub-gear 222 that are connected to each other, the first sub-gear 221 is meshed with the sun gear 21, and the second sub-gear 222 is meshed with the ring gear 24. The planetary gear 22 is a duplex gear, and the first sub-gear 221 and the second sub-gear 222 are coaxial and are separated by a certain distance, so that an integrated structure is formed, and the rotating speed of the output member 30 can be changed, and various rotating speeds can be adjusted.
Fig. 8 is a schematic view of a variable speed drive provided in accordance with still other embodiments of the present application, as shown in fig. 8, and in some embodiments, the variable speed drive further includes a differential 60, the differential 60 being coupled to the output member 30.
The differential 60 is a device consisting of left and right side gears, two planetary gears and a carrier. In four-wheel drive, all gears must be connected in order to drive four wheels, and if the four wheels are mechanically connected together, the vehicle cannot rotate at the same speed while traveling in a curve, and in order to make the rotational speeds of the vehicle traveling in a curve substantially uniform, a differential 60 needs to be built in to adjust the rotational speed difference of the left and right (or front and rear) wheels.
In the above scheme, the differential 60 can rotate left and right (or front and rear) wheels at different rotation speeds, so that the running performance and the handling performance of the vehicle are improved.
In some embodiments, the variable speed transmission further includes a second transmission member 70, and the differential 60 is coupled to the output member 30 via the second transmission member 70.
The second transmission member 70 of the present embodiment may be a gear, a link, or the like, that is, the output member 30 and the differential gear 60 may be in gear transmission or in chain transmission. The transmission efficiency can be improved by the transmission of the second transmission member 70, facilitating the transmission of the power of the driving member 10 to the differential 60.
In some embodiments, the second transmission 70 is a transmission gear, and the differential 60 is provided with a differential gear, the transmission gear intermeshes with the differential gear.
When the output member 30 is an output shaft, the transmission gear of the present embodiment may be directly sleeved on the outer periphery of the output member 30, so as to drive the transmission gear to rotate through the output member 30. In particular, the drive gear may be the drive gear of a final drive, which is an independent closed drive between the prime mover and the working machine for reducing rotational speed and increasing torque to meet the working requirements.
In the scheme, the gear transmission precision and efficiency are high, the structure is compact, the transmission efficiency of the variable speed transmission device is further improved, and the device structure is simplified.
An example of a second aspect of the application provides a vehicle comprising a variable speed drive of any of the embodiments described above. Because the vehicle adopts all the technical schemes of all the embodiments, the vehicle has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.
According to some embodiments of the present application, there is provided a variable speed drive comprising a drive member 10, a first drive member 20, an output member 30 and a clutch assembly 40, the drive member 10 having a rotational axis 11; the first transmission member 20 is connected with the rotating shaft 11 of the driving member 10; the clutch assembly 40 includes a first clutch 41 for connecting the rotary shaft 11 and the output member 30, and a second clutch 42 for connecting the first transmission member 20 and the output member 30. The first transmission member 20 includes a sun gear 21, a planetary gear 22, and a carrier 23, the sun gear 21 is connected to the rotating shaft 11 of the driving member 10, the planetary gear 22 is externally engaged with the sun gear 21, the carrier 23 is connected to the planetary gear 22, and the second clutch 42 includes a first sub-clutch 421, and the first sub-clutch 421 is used to connect the carrier 23 with the output member 30. The first transmission member 20 further includes a ring gear 24, the ring gear 24 being in meshed engagement with the planet gears 22, and the second clutch 42 further includes a second sub-clutch 422, the second sub-clutch 422 being for connecting the ring gear 24 with the output member 30.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A variable speed drive comprising:
A driving member having a rotation shaft;
the first transmission piece is connected with the rotating shaft of the driving piece;
An output member;
The clutch assembly comprises a first clutch and a second clutch, wherein the first clutch is used for connecting the rotating shaft with the output piece, and the second clutch is used for connecting the first transmission piece with the output piece.
2. The variable speed drive of claim 1, wherein the first transmission member comprises a sun gear, a planet gear, and a planet carrier, the sun gear being coupled to the shaft of the drive member, the planet gear being in external engagement with the sun gear, the planet carrier being coupled to the planet gear, the second clutch comprising a first sub-clutch for coupling the planet carrier to the output member.
3. The variable speed drive of claim 2, further comprising a first brake coupled to the carrier for controlling the carrier braking.
4. The variable speed drive of claim 2, wherein the first transmission further comprises a ring gear that is intermeshed with the planetary gear, and the second clutch further comprises a second sub-clutch for connecting the ring gear and the output.
5. The variable speed drive of claim 4, further comprising a second brake coupled to the ring gear for controlling the ring gear braking.
6. The variable speed drive of claim 4, wherein the planetary gear comprises first and second interconnected sub-gears, the first sub-gear being in external engagement with the sun gear and the second sub-gear being in internal engagement with the ring gear.
7. The variable speed drive of claims 1-6, further comprising a differential coupled to the output member.
8. The variable speed drive of claim 7, further comprising a second drive member, the differential being coupled to the output member by the second drive member.
9. A variable speed drive as claimed in claim 8, wherein the second drive is a drive gear and the differential is provided with a differential gear, the drive gear intermeshes with the differential gear.
10. A vehicle comprising a variable speed drive as claimed in any one of claims 1 to 9.
CN202280008230.5A 2022-10-20 2022-10-20 Variable speed transmission device and vehicle Pending CN118076818A (en)

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000055150A (en) * 1998-08-10 2000-02-22 Fuji Heavy Ind Ltd Forward/backward-moving changeover device for transmission
CN201400082Y (en) * 2009-03-12 2010-02-10 佳木斯大学 Planetary mechanism power coupler
CN201893650U (en) * 2010-11-23 2011-07-06 江苏大学 Power continuously variable transmission with three-gear transmission function
CN103066748A (en) * 2013-01-25 2013-04-24 合肥工业大学 Integrated two-gear motor transmission for pure electric vehicle
CN103912640A (en) * 2014-04-09 2014-07-09 天津天海同步科技股份有限公司 Automatic two-gear transmission for electric vehicles
CN209458357U (en) * 2018-11-19 2019-10-01 开沃新能源汽车集团有限公司 A kind of single planetary gear two-shift automatic speed variator of double clutches
CN111361412A (en) * 2018-12-26 2020-07-03 郑州宇通客车股份有限公司 Single-motor pure electric power system and vehicle

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