A kind of two gear power transmissions with synchronizerTechnical field
The present invention relates to power transmission device technical field, more particularly to a kind of two gear power transmission dresses with synchronizerPut.
Background technology
In automatic transmission used in conventional fuel oil automobile, coordinated by two-part structure and realize cutting between different stallsChange, the gear that a part is made up of multiple planetary gear trains, another part is by each clutch, brake and individual event clutchThe gearshift part of device composition, because clutch and brake belong to friction element, with increasing for friction element, damaged by frictionIt is also unavoidable to lose the efficiency reduction brought.Electric automobile is driven using motor, and motor is operated between high efficient area and can savedElectric energy, improve the distance travelled of vehicle；Using the electric car of fixed speed ratio to the utilization rate of motor than relatively low, and use too muchShift structure complexity speed changer can cause the efficiency of motor to decline；Therefore, power loss is smaller, more compact structure, simple, assemblingConvenient power transmission turns into following developing direction of speed reducer for electric vehicle.
The content of the invention
Instant invention overcomes above-mentioned the deficiencies in the prior art, there is provided a kind of two gear power transmission dresses with synchronizerPut.
Technical scheme：
A kind of two gear power transmissions with synchronizer, including casing, gear shift unit, synchronizer combined cover, inputAxle lock ring, input shaft, output shaft, housing lock ring, external toothing, transmission drive gear, transfer driven gear, planetary gearsets one,Planetary gearsets two, planet carrier, sun gear, the gear shift unit power are provided by hydraulic system, the gear shift unit with it is synchronousAxle combined cover connects, and the synchronizing shaft combined cover outer end is provided with input shaft lock ring, and the input shaft lock ring sets and is arranged on instituteState on input shaft, the input shaft lock ring outer end is provided with housing lock ring, and the housing lock ring is arranged on casing, the inputThe sun gear is provided with axle, planet carrier is additionally provided with the input shaft, the planet tooth is provided with the planet carrierWheel group one, the planetary gearsets two, the planetary gearsets one engage with the sun gear, the planetary gearsets one also withThe planetary gearsets two engage, and the planetary gearsets two engage with external toothing, and the external toothing connects with transmission drive gearConnect；
The transmission drive gear engages with the transfer driven gear, and the transfer driven gear is fixedly mounted on describedOn power transmission shaft, first gear is additionally provided with the power transmission shaft, the first gear engages with second gear, the second gearIt is fixedly mounted on the output shaft；
The input shaft, the output shaft, the power transmission shaft are horizontally arranged at the box house.
Preferably, the input shaft lock ring and planet carrier are connected with input shaft spline respectively.
Preferably, it is additionally provided with differential mechanism on the output shaft.
The present invention has the advantages that relative to prior art：
The two gear power transmissions disclosed by the invention with synchronizer control synchronizer combined cover by gear shift unitInput shaft lock ring is combined with sun gear or housing lock ring is combined with sun gear, control the transmission of power, ensure power transmissionLoss reduce, the present apparatus is relative to a gear more than the single grade of decelerator currently mainly used so as to realizing that electric car is risingStep and accelerate when decelerator be operated in low-grade location realize high pulling torque output be easy to electric car to accelerate, in high speed using high tap position fromAnd improve max. speed and ensure that motor is operated in high efficiency range, so as to relative to single grade of decelerator, can mainly be carried from performanceAcceleration when high max. speed and starting and acceleration, by the speeds match of decelerator, motor can be more operated inHigh efficient area, final output high pulling torque area can improve, while motor can be designed to that the bigger maximum speed of moment of torsion is more lower, sectionThe cost of power saving machine, and reduce existing battery of electric vehicle off-capacity, the problem of course continuation mileage is short；This other decelerator usesPlanetary gear is driven relative to ordinary gear transmission with small volume, in light weight, compact-sized, transmits that power is big, carryingAbility is high；Gearratio is big；The advantages of stable movement, stronger shock resistance and ability of vibration；The present apparatus has to enter using synchronizerThe feature of row gearshift, had according to the eigen present apparatus when running at high speed in order that shift gears more smooth-going and quickly and reduces twoThe trouble of secondary gearshift, changed without stopping can in neutral gear, improve the comfortableness of driving, reduced during gearshift between gearAbrasion, serve the effect for the service life for extending speed changer.
Apparatus of the present invention are simple for structure, reasonable in design, can be this by the action of HYDRAULIC CONTROL SYSTEM synchronizer, useDevice enters the decelerator of action edge transmission, can improve vehicle electric energy utilization rate and distance travelled, and its various aspects of performance is moreIt is prominent.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following descriptionObtain substantially, or recognized by the practice of invention.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is that synchronizer combined cover of the present invention makes housing lock ring and sun gear integrated structure schematic diagram；
Fig. 3 is the structural representation that synchronizer combined cover of the present invention makes that input shaft lock ring is combined with sun gear.
1- casings in figure；2- gear shift units；3- synchronizer combined covers；4- input shaft lock rings；5- input shafts；6- housings are lockedRing；7- external toothings；8- is driven drive gear；9- planetary gearsets two；10- planetary gearsets one；11- planet carriers；The 12- sunWheel；13- transfer driven gears；14- first gears；15- power transmission shafts；16- second gears；17- output shafts.
Embodiment
Below with reference to accompanying drawing, the present invention is described in detail.
With reference to shown in Fig. 1 to Fig. 3, a kind of Maintenance of Agricultural Machinery platform disclosed in the present embodiment, including casing 1, gear shift unit 2,Synchronizer combined cover 3, input shaft lock ring 4, input shaft 5, output shaft 17, housing lock ring 6, external toothing 7, transmission drive gear 8, biographyDynamic driven gear 13, planetary gearsets 1, planetary gearsets 29, planet carrier 11, sun gear 12, the gear shift unit 2 with it is sameStep device combined cover 3 connects, and the outer end of synchronizer combined cover 3 is provided with input shaft lock ring 4, and the input shaft lock ring 4 sets peaceOn the input shaft 5, the outer end of input shaft lock ring 4 is provided with housing lock ring 6, and the housing lock ring 6 is arranged on casing 1On, the sun gear 12 is provided with the input shaft 5, planet carrier 11, the planet carrier are additionally provided with the input shaft 5The planetary gearsets 1, the planetary gearsets 2 10, the planetary gearsets 1 and the sun are provided with 11The engagement of wheel 12, the planetary gearsets 1 also engage with the planetary gearsets 29, the planetary gearsets 29 and external toothThe engagement of circle 7, the external toothing 7 are connected with transmission drive gear 8；
The transmission drive gear 8 is engaged with the transfer driven gear 9, and the transfer driven gear 9 is fixedly mounted onOn the power transmission shaft 15,15 are additionally provided with first gear 14 on the power transmission shaft, and the first gear 14 engages with second gear,The second gear 16 is fixedly mounted on the output shaft 17；
The input shaft 5, the power transmission shaft 15, the output shaft 17 are installed in parallel in inside the casing 1 successively.
Specifically, the input shaft lock ring 4 and planet carrier 11 are connected with the spline of input shaft 5 respectively.
Specifically, it is additionally provided with differential mechanism on the output shaft 17.
For the present invention when system needs to realize a certain gear, hydraulic system 1 controls synchronizer knot according to the control of electric signalTrap 3 realizes interoperation between input shaft lock ring 4, housing lock ring 6 and sun gear 12, planet carrier 11 and input shaft 5 and inputPower is connected；
Synchronizer combined cover 3 makes housing lock ring 6 be combined with sun gear 12 (accompanying drawing 2), and housing lock ring 6 makes sun gear 12Dynamic, power inputs from planet carrier 11, input shaft 5, and planet carrier, which rotates, drives 29 turns of planetary gearsets 1 and planetary gearsetsDynamic, because sun gear 12 is braked by housing lock ring 6, external toothing 7 rotates in the case where the planetary gearsets two being engaged with act on, powerExported with external toothing 7 and transmission drive gear 8, the power of output is by being driven drive gear 8, transfer driven gear 13, firstGear 14, second gear 16 are delivered to tire；
Synchronizer combined cover 3 makes input shaft lock ring 4 be combined (accompanying drawing 3) with sun gear 12, by sun gear 12 and input shaft 5It is fixed together, planet carrier 11, input shaft 5 and sun gear 12 while input power, sun gear 12 and planet carrier 11 are synchronizedRotate, planetary mechanism is locked, realize 1:Than output power, power exports 1 speed with external toothing 7 and transmission drive gear 8, defeatedThe power gone out is delivered to tire by being driven drive gear 8, transfer driven gear 13, first gear 14, second gear 16；
When system switches between two gears, it is necessary to by hydraulic system 1 gear shift unit 2 is carried out it is electro-hydraulic accurateControl, when realizing that synchronizer combined cover 3 make it that housing lock ring 6 is combined with sun gear 12 in motion, input shaft lock ring 4 and the sunThe separation of wheel 12；Conversely, when input shaft lock ring 4 is combined with sun gear 12, housing lock ring 6 separates with input shaft 12.
Above example is the exemplary illustration to this patent, does not limit its protection domain, people in the artMember can also be changed to its part, as long as no the Spirit Essence beyond this patent, all in the protection domain of this patent.