CN205429972U - Automatic speed changing device - Google Patents

Automatic speed changing device Download PDF

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Publication number
CN205429972U
CN205429972U CN201620106471.5U CN201620106471U CN205429972U CN 205429972 U CN205429972 U CN 205429972U CN 201620106471 U CN201620106471 U CN 201620106471U CN 205429972 U CN205429972 U CN 205429972U
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China
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gear
pair
planet carrier
shaft
power input
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CN201620106471.5U
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Chinese (zh)
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李振鲁
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李振鲁
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Abstract

Automatic speed changing device, be used in the automobile on, power input shaft, power output shaft, motor shaft be equipped with on the casing, last drive shift gear, synchronous ware and grade gear that falls back of being equipped with of power input shaft, the drive shift gear be swing joint with fall back grade gear and power input shaft, synchronous ware is endwise slip formula key -type connection on power input shaft, the last planet carrier of rotation connection and the first gear of key -type connection of being equipped with of power output shaft, the sun gear, first gear is connected for the meshing with grade gear that reverses, a plurality of swing joint's planet wheel is equipped with on the planet carrier, each planet wheel and sun gear meshing hookup, the ring gear rather than the meshing hookup is equipped with in the outside of each planet wheel, the ring gear is with the hookup of drive shift gear engagement or through second gear and the hookup of drive shift gear engagement, the gear pair is equipped with between planet carrier and the motor shaft, driving gear and motor shaft key -type connection in the gear pair, driven gear in the gear pair is coaxial with the planet carrier, link firmly with the planet carrier, the utility model discloses simple structure, light in weight.

Description

Automatic transimission
Technical field
This utility model relates to automobile component, specifically provides a kind of automatic transimission.
Background technology
The automatic transimission of original main flow is to be realized fluid drive action by hydraulic torque converter by the way of fluid power transmission and gear combination, this automatic transimission is meshed built with a lot of set planetary gears increases gear, shortcoming is that the mechanism of variator is complicated, and weight is big, adds oil consumption.The gear of original automatic transimission does not touch on the brake when drive shift and backward gear and throttle also can travel, and problem Producing reason is the use of the conversion by force of hydraulic torque converter, and operation has certain hidden danger.
Summary of the invention
The purpose of this utility model is to provide a kind of automatic transimission, and this variator uses with other unit construction of automobile, and compared with original technology automatic transimission, speed changer structure of the present utility model is simple, lightweight, operation safety.
The technical solution of the utility model is: automatic transimission, it is characterized in that: equipped with the power input shaft being rotationally connected, power output shaft, motor shaft on housing, power input shaft is sequentially arranged with forward gear, lock unit and backward gear gear, wherein forward gear and backward gear gear are with power input shaft for being flexibly connected, and lock unit is that axial sliding type is bonded on power input shaft;Equipped with the first bonded gear on power output shaft, bonded sun gear and the planet carrier being rotationally connected, wherein the first gear is connected for engagement with backward gear gear, the planetary gear being flexibly connected equipped with several on planet carrier, each planetary gear is connected with sun gear engagement, the outside of each planetary gear is equipped with the gear ring engaging connection, gear ring is connected with forward gear engagement or is connected with forward gear engagement by the second gear, equipped with gear pair between planet carrier and motor shaft, driving gear in gear pair is bonded with motor shaft, driven gear in gear pair is coaxial with planet carrier, and be connected with planet carrier, described gear pair is hypoid gear pair or worm and gear gear pair.
Gear pair be hypoid gear pair structure in, the biasing spacing of the driving gear in gear pair and driven gear is more than 30 millimeters.
Equipped with stand-by motor axle and assist tooth wheel set on described housing, driving gear in assist tooth wheel set is connected with stand-by motor axle key, driven gear in assist tooth wheel set is coaxial with gear ring and is connected with gear ring, and described assist tooth wheel set is hypoid gear pair or worm and gear gear pair.
Operation principle of the present utility model is: when falling back, and its outgoing route is: power input power power shaft lock unit backward gear gear the first gear transmission outputting axial power exports.During advance, its outgoing route is: power input power power shaft lock unit forward gear the second gear-wheel gear-ring planetary gear sun gear power output shaft power exports, or, power input power power shaft lock unit forward gear gear ring planetary gear sun gear power output shaft power exports, period, the planet carrier in motor shaft planetary gearsets is driven forward to rotate with gear ring with motor, utilize planetary gearsets operation principle, can reduce or increase the rotating speed of power output shaft, particularly as follows: when power inputs from gear ring, export from sun gear, when planet carrier is locked, the rotating speed of forward gear is exported to power output shaft than equal proportion by gears at different levels;When power inputs from gear ring, exporting from sun gear, when planet carrier and gear ring forward rotate, the rotating speed of forward gear is exported to power output shaft than equal proportion reduction of speed by gears at different levels;Thus realize stepless automatic speed changing function.
Assume gear at different levels than for geometric ratio, power input shaft is 1000RPM (rev/min), and when motor rotational shaft speed is 1000RPM, the rotating speed of power output shaft is 0RPM (is now equivalent to starting gear or 1 grade);When motor rotational shaft speed is 800RPM, the rotating speed of power output shaft is 200RPM (is now equivalent to low or first gear or 2 grades);When motor rotational shaft speed is 600RPM, the rotating speed of power output shaft is 400RPM (is now equivalent to middle low or first gear or 3 grades);When motor rotational shaft speed is 300RPM, the rotating speed of power output shaft is 700RPM (is now equivalent to high speed shelves or 4 grades);Motor rotational shaft speed is 0RPM, and the rotating speed of power output shaft is 1000RPM (is now equivalent to top gear or 5 grades).
Following table is the rotation speed relation table of power input shaft and motor shaft:
The control unit hardware and the control program software that wherein drive the motor of motor shaft are integrated by vehicle-mounted computer, vehicle-mounted computer collects information of vehicles and the operation signal (gear of such as gear lever, the state of each pedal, speed etc.) of driver, control the opening of motor, stop, rotation direction and rotating speed, realization is accelerated, the tractive-braking efforts of the electromotor that slows down, transmits, thus, the automatic transimission of this technology can promote lock unit by electric synchronous device, derive automatically controlled manual gear, increase Driving.
The utility model has the advantages that: drive motor shaft to control the planetary gear rotating speed around sun round by motor, thus the rotating speed of power output shaft is increased or decreased, realize the plus-minus speed change automatically controlled, compared with original technology automatic transimission, this utility model automatic transimission can reconcile gear on demand, during speed change, the variation of impulsive force and engine rotation is less, can realize infinitely variable speeds, therefore reduce oil consumption;Owing to only using a set of planetary gearsets, its simple in construction, lightweight, oil consumption can be reduced after reducing weight, not touching on the brake and during throttle, motor drives motor shaft to make planetary gear and gear ring synchronous axial system, stationary vehicle can be kept motionless, operates safety;Compared with original change speed gear box, this utility model automatic transimission is continuous print speed change, manipulates comfortable, does not has power consumption and friction, synchronized mechanism not to produce heat, and mechanical life is long.
Gear pair be hypoid gear pair structure in, the biasing spacing of the driving gear in the gear pair of restriction and driven gear, can be further ensured that this variator effectively works;Stand-by motor axle is driven to drive assist tooth wheel set to pin down the rotating speed of power output shaft by stand-by motor, the effect of auxiliary braking can be played when brake or deceleration, principle is: during deceleration or when braking, stand-by motor drives stand-by motor axle with the rotational speed less than power output shaft, and be gradually lowered rotating speed, thus play the effect (pining down the rotating speed of power output shaft) of auxiliary braking.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model automatic transimission;
Fig. 2 is based on the attachment structure schematic diagram of planetary gearsets in Fig. 1 structure automatic transimission;
Fig. 3 is the second structural representation of this utility model automatic transimission;
Fig. 4 is the third structural representation of this utility model automatic transimission;
Fig. 5 is based on the attachment structure schematic diagram of planetary gearsets in Fig. 4 structure automatic transimission;
Fig. 6 is the 4th kind of structural representation of this utility model automatic transimission;
Fig. 7 is the attachment structure schematic diagram of hypoid gear pair;
Fig. 8 is the attachment structure schematic diagram of worm and gear gear pair.
1 power input shaft in figure, 2 backward gear gears, 3 lock units, 4 gear change hand levers, 5 forward gear, 6 housings, 7 gear rings, 8 second gears, 9 planetary gears, 10 planet carriers, driven gear in 11 gear pairs, 12 clutches, 13 power set, driving gear in 14 gear pairs, 15 motors, 16 motor shafts, 17 sun gears, 18 power output shafts, 19 lead driving wheel, 20 first gears, the external toothing teeth of 21 gear rings, 22 biasing spacing, driven gear in 23 assist tooth wheel sets, 24 stand-by motors, 25 stand-by motor axles, driving gear in 26 assist tooth wheel sets.
Detailed description of the invention
Automatic transimission (automatic transmission), including housing, equipped with the power input shaft 1 being rotationally connected on housing 6, power output shaft 18, motor shaft 16, the power source being connected with power input shaft is fuel engines, electric engine equal power device 13, clutch 12 can be installed between power set and power input shaft, the elongated end of motor shaft is connected with the clutch end of motor 15, power input shaft is sequentially arranged with forward gear 5, lock unit 3 and backward gear gear 2, wherein forward gear and backward gear gear with power input shaft for being flexibly connected, lock unit is that axial sliding type is bonded on power input shaft;Equipped with the first bonded gear 20 on power output shaft, bonded sun gear 17 and the planet carrier 10 being rotationally connected, wherein the first gear is connected for engagement with backward gear gear, the planetary gear 9 being flexibly connected equipped with several on planet carrier, each planetary gear is connected with sun gear engagement, the outside of each planetary gear is equipped with the gear ring 7 engaging connection, gear ring is connected with forward gear engagement or is connected with forward gear engagement by the second gear 8, equipped with gear pair between planet carrier and motor shaft, driving gear 14 in gear pair is bonded with motor shaft, driven gear 11 in gear pair is coaxial with planet carrier, and be connected with planet carrier, described gear pair is hypoid gear pair or worm and gear gear pair.
Equipped with stand-by motor axle 25 and assist tooth wheel set on described housing, driving gear 26 in assist tooth wheel set is connected with stand-by motor axle key, driven gear 23 in assist tooth wheel set is coaxial with gear ring and is connected with gear ring, described assist tooth wheel set is hypoid gear pair or worm and gear gear pair, and the elongated end of stand-by motor axle is connected with the clutch end of stand-by motor 24.
Described planetary gearsets, gear ring, sun gear, planet carrier and several planetary gears composition, wherein, each planetary gear is uniformly distributed along the circumference, planet carrier is provided with the wheel shaft corresponding with each planetary gear, each planetary gear is rotationally connected with corresponding wheel shaft, and one end that each wheel shaft is corresponding with planet carrier is connected with planet carrier, and each planetary gear one circumferential end is connected with the internal messing teeth engagement of gear ring, another circumferential end engages with the external toothing teeth of sun gear and is connected.
It is secondary that described driving gear and driven gear form one group of meshed gears, and described gear pair is hypoid gear pair or worm and gear gear pair.
Described lock unit is existing mature technology parts, for the power selectivity of power input shaft is flowed to forward gear or backward gear gear
Described forward gear, lock unit, backward gear gear composition gearshift, lock unit therein can be promoted by gear change hand lever 4, also can be promoted by electronic control mechanism, it is connected with the transmission of forward gear power when lock unit marches forward when a grade gear direction slides into stop, is connected with the transmission of backward gear gear transmission when lock unit slides into stop to backward gear gear direction.
Fig. 1 to Fig. 6 illustrates the second gear of four kinds of different structures and the engagement system of gear ring, in Fig. 1, Fig. 2, second gear side is fixed with leads driving wheel 19, second gear is connected with forward gear power by leading driving wheel, second gear engages with the internal messing teeth of gear ring and is connected, second gear and the wheel shaft leading driving wheel are arranged on housing, for the power of forward gear is passed to gear ring;In Fig. 3, the external toothing teeth of the second gear engage with forward gear, and the second geared sleeve is connected on the periphery elongated end of gear ring and with gear ring, the second gear, gear ring, the axis co-axial of power output shaft, for the power of forward gear is passed to gear ring;Fig. 4, in Fig. 5, forward gear directly engages with the external toothing teeth 21 of gear ring and is connected, advantage is compact conformation, lightweight, in Fig. 6, second gear set is on the extension of gear ring, and with the extension of gear ring by keyway and keying even, for the power of forward gear is passed to gear ring, equipped with stand-by motor axle and assist tooth wheel set on described housing, driving gear in assist tooth wheel set is connected with stand-by motor axle key, driven gear in assist tooth wheel set is coaxial with gear ring, and be connected with gear ring, described assist tooth wheel set is hypoid gear pair or worm and gear gear pair.
This utility model automatic transimission utilizes planetary gear and conversion power source to realize various advance conversion and the conversion that falls back, and the conversion that falls back can also manipulate as the mode of conversion of advancing.Power output shaft can also realize various power with multiple attachment device.
This utility model automatic transimission can utilize variable-speed dynamic source to realize speed change and braking, simple in construction low price without clutch and other brake unit.From high tap position to low-grade location change time, power is transferred to planetary gearsets from variable-speed dynamic source, and small power source can also realize speed change, i.e. variable-speed dynamic source can also realize speed change with little revolving force;Vehicle and driver will not be produced impact during gearshift every time;
Multiple planetary gears, the gear ring of outmost turns that in the present embodiment, planetary gearsets is connected by middle central gear, both sides form, can be according to the fixing of certain gear and rotation, it is possible to achieve slow down and accelerate, advance and fall back.Need not the gear of multiple rank, drive shift and backward gear are only set, simple to operate.
When driver wants to strengthen output shaft torque, the when of reducing rotating speed, drive motor shaft to drive hypoid gear pair or worm and gear gear pair to make the planet carrier (CARRIER) the equidirectional rotation to gear ring by motor, by strengthening the rotating speed of planet carrier, reach to reduce the purpose of rotating speed.
Planetary gear and gear ring engagement, in gear ring, the sun gear around engagement rotates, from the torque drive of gear ring input to the sun gear bonded with output shaft, the rotation of rotation, planetary gear and gear ring according to planet carrier (CARRIER), at this moment the moment of torsion of power output shaft increases, it is thus achieved that slow-revving dynamic trait.
When driver wants to reduce output shaft torque, the when of increasing rotating speed, drive motor shaft to drive hypoid gear pair or worm and gear gear pair to make the planet carrier (CARRIER) the equidirectional rotation to gear ring by motor, by reducing the rotating speed of planet carrier, reach to increase the purpose of rotating speed.
Planetary gear and gear ring engagement, in gear ring, the sun gear around engagement rotates, from the torque drive of gear ring input to the sun gear bonded with output shaft, the rotation of rotation, planetary gear and gear ring according to planet carrier (CARRIER), at this moment the moment of torsion of power output shaft reduces, it is thus achieved that high-revolving dynamic trait.
Gear pair be hypoid gear pair structure in, the biasing spacing 22 of the driving gear in gear pair and driven gear is more than 30 millimeters.
Motor and stand-by motor are the one in the reducing motors such as AC motor, DC motor, oil pressure motor.
The expanded function of this utility model automatic transimission:
1, it is suitable for using as the variator of automobile, the power of automobile engine is exported to power input shaft.
When 2, being incorporated in vintage gear, lock unit is operated by electronic control mechanism.
3, the idle running and the rotation synchronization that utilize the driving gear of automobile power transfer device (CARRIIER) inside drive generation gear ratio to be mechanical type speed-changing braking or the speed-changing braking device according to automatic gear-box control unit (TCU) to distinguish speed-changing braking device.In automatically controlled hands, automatic catch, the speed change request of each gear will be transmitted electronic signal by automatic gear-box control unit, and enforcement or the information of the operation of all control panels will first store in vehicle-mounted computer (ECU) on automobile, automatic gear-box control unit carries out information by electronic control unit (ElectronicControlUnit) with transmission control unit (TransmissionControlUnit) and is connected, thus the program preset in utilizing vehicle-mounted computer (ECU), set, control and adjust self-shifting opportunity.
Planetary gear is the revolving force conversion equipment being widely used in society in industry and automotive field.Planetary gear is communicated to output shaft by the revolving force of power source transmission and rotation speed, according to changing gear ratio, meets the different condition needs to pull strength, meets possible travel speed requirement.This planetary gear scheme submitted to is more more efficient than existing power transmission mode, simple, practical.
Planetary gearsets is made up of sun gear, planetary gear (also known as satellite wheel), planet carrier and gear ring.Planetary gear is exported by gear ring line of input star-wheel or planetary gear input gear ring exports, according to gear ring, can realize power shaft and output shaft disengaging positive drive relation, input and the change of output shaft gear ratio, 3 to 6 planetary gear combinations can realize various gear ratio and direction of rotation with speed change clutch combination.
This utility model particularly uses on automotive transmission and electric automobile, diminishes accordingly than existing speed change gear volume, and revolving force strengthens and therefore improves a lot and efficiency, has the advantage reduced in the overall weight of vehicle and price.

Claims (3)

1. automatic transimission, it is characterized in that: equipped with the power input shaft being rotationally connected, power output shaft, motor shaft on housing, power input shaft is sequentially arranged with forward gear, lock unit and backward gear gear, wherein forward gear and backward gear gear are with power input shaft for being flexibly connected, and lock unit is that axial sliding type is bonded on power input shaft;Equipped with the first bonded gear on power output shaft, bonded sun gear and the planet carrier being rotationally connected, wherein the first gear is connected for engagement with backward gear gear, the planetary gear being flexibly connected equipped with several on planet carrier, each planetary gear is connected with sun gear engagement, the outside of each planetary gear is equipped with the gear ring engaging connection, gear ring is connected with forward gear engagement or is connected with forward gear engagement by the second gear, equipped with gear pair between planet carrier and motor shaft, driving gear in gear pair is bonded with motor shaft, driven gear in gear pair is coaxial with planet carrier, and be connected with planet carrier, described gear pair is hypoid gear pair or worm and gear gear pair.
Automatic transimission the most according to claim 1, it is characterised in that: gear pair be hypoid gear pair structure in, the biasing spacing of the driving gear in gear pair and driven gear is more than 30 millimeters.
Automatic transimission the most according to claim 1 and 2, it is characterized in that: equipped with stand-by motor axle and assist tooth wheel set on described housing, driving gear in assist tooth wheel set is connected with stand-by motor axle key, driven gear in assist tooth wheel set is coaxial with gear ring and is connected with gear ring, and described assist tooth wheel set is hypoid gear pair or worm and gear gear pair.
CN201620106471.5U 2016-02-02 2016-02-02 Automatic speed changing device Active CN205429972U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110686050A (en) * 2018-07-04 2020-01-14 比亚迪股份有限公司 Vehicle transmission device, vehicle driving system and vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110686050A (en) * 2018-07-04 2020-01-14 比亚迪股份有限公司 Vehicle transmission device, vehicle driving system and vehicle

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