CN204344854U - Stepless speed changer of electric automobile - Google Patents
Stepless speed changer of electric automobile Download PDFInfo
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- CN204344854U CN204344854U CN201420554511.3U CN201420554511U CN204344854U CN 204344854 U CN204344854 U CN 204344854U CN 201420554511 U CN201420554511 U CN 201420554511U CN 204344854 U CN204344854 U CN 204344854U
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Abstract
The utility model relates to the technical field of automobile speed-changing device, discloses a kind of stepless speed changer of electric automobile, and the driving wheel in described housing with driving wheel transfer mechanism is connected by the follower of driving belt with follower transfer mechanism; The driving shaft that described driving wheel transfer mechanism has for connecting power device is formed to the driving wheel of follower transfer mechanism transfer of torque with being nested with on driving shaft, described driving wheel is made up of the movable cone dish of the driving wheel fixed cone dish be fixed on driving shaft and the driving wheel be nested with on driving shaft, and the movable cone dish of driving wheel is connected with electric speed regulation drive unit by the spiral thrust device be nested with on driving shaft; The utility model can meet electric vehicle at the performance requirement of running at high speed and low speed is climbed, and can also meet the performance requirement of electric vehicle reversing, its structure is simple, easy to operate, cost of production is low, is easy to popularize.
Description
Technical field
The utility model relates to automobile speed-changing device technical field, particularly relates to a kind of stepless speed changer of electric automobile.
Background technique
At present, as the new energy traffic tool of energy-saving and emission-reduction---the appearance of electric bicycle, explore a new road for saving energy and protect environment.
Although electric walk instead vehicle motor speed range is adjustable, be also difficult to meet the performance requirement of running at high speed with during low speed climbing simultaneously.Current power scooter power source used is all high-speed motor, particularly occupancy Wechselstrommotor in rising trend, and its maximum speed is mostly 6000 ~ 9000 revs/min, and the power that motor exports has to pass through reduction gear box and could drive vehicle.The reduction speed ratio of gear-box affects the performance of vehicle largely.Because having various different operating mode in vehicle is advanced, certain tractive force is had when should ensure starting and climbing, certain speed can be reached when ensureing flat pavement running again, weigh between the little moment of torsion of high speed and low-speed big again, looked after running speed often and but have lost a part of grade ability.Be equipped with the vehicle of simple speed-changing gear box, when starting or climbing, motor works in inefficient district, and the energy that meeting loss is more affects course continuation mileage and the working life of battery.
Because electric current required when its low speed is climbed is excessive and bring a series of drawbacks such as battery efficiency is on the low side, course continuation mileage decline, shorter battery life.Existing synchronizer formula gear-shift transmission, needs when gear shift position to cut off power with clutch, otherwise changing of just can not being well on, due to the existence of clutch, and gear shift frequent operation difficulty, and increase cost difficulty of processing is increased.
Summary of the invention
For overcoming the deficiencies in the prior art, the utility model provides a kind of stepless speed changer of electric automobile.
For achieving the above object, the utility model adopts following technological scheme:
A kind of stepless speed changer of electric automobile, comprise: housing, driving wheel transfer mechanism, follower transfer mechanism, electric speed regulation drive unit, spiral thrust device, the driving wheel of the driving wheel transfer mechanism in described housing is connected by the follower of driving belt with follower transfer mechanism; Described driving wheel transfer mechanism is formed by connecting the driving wheel to follower transfer mechanism transfer of torque that the driving shaft of power motor and driving shaft are arranged, described driving wheel is made up of the movable cone dish of the driving wheel fixed cone dish be fixed on driving shaft and the driving wheel be nested with on driving shaft, and the movable cone dish of driving wheel is connected with electric speed regulation drive unit by the spiral thrust device on driving shaft;
Described follower transfer mechanism comprises: follower, driven shaft, driven gear, follower by the follower fixed cone dish be fixed on driven shaft with to be nested with on driven shaft the movable cone dish of follower and to be combined and to form, follower movable cone dish axle sleeve is outside equipped with the thrust spring moved axially to follower fixed cone dish, thrust spring one end contacts with the movable cone dish of follower, the thrust spring the other end with to be fixed on driven shaft spring seat fixing thrust bearing contacts, and follower movable cone dish axle sleeve radial direction is provided with the driver slot to driven shaft transfer of torque, driver slot is nested with on the drive pin of driven shaft, driven gear on driven shaft is connected with a joggle by reduction gear and differential mechanism,
Wherein, the movable cone dish of driving wheel has under electric speed regulation drive unit, the effect of spiral thrust device to be done and driving wheel fixed cone dish moving axially in opposite directions, and the movable cone dish of the follower of movement has work and follower fixed cone dish moving axially dorsad under the effect of driving belt; The movable cone dish of the driving wheel that moves axially has the driving belt working diameter in driving wheel " V " the type belt grooves that regulates and form between driving wheel fixed cone dish and the movable cone dish of driving wheel; And and the movable cone dish of follower of the movable cone dish of driving wheel movement dorsad there is driving belt working diameter in follower " V " the type belt grooves that regulates and form between follower fixed cone dish and follower activity cone dish; Thus there is the velocity ratio regulating rotating speed between driving shaft and driven shaft;
Wherein, corresponding with driving wheel housing is provided with the position transducer that the movable cone dish of monitoring driving wheel moves axially;
Wherein, driving shaft is provided with Speed sensing circle, the housing corresponding with Speed sensing circle on driving shaft is provided with the driving shaft speed probe of a monitoring driving shaft rotating speed;
Wherein, corresponding with the follower of driven shaft housing is provided with the output speed sensor that is monitored secondary speed.
A kind of stepless speed changer of electric automobile, described electric speed regulation drive unit comprises: variable-speed controller, adjustment motor and train of reduction gears, input gear on the adjustment motor that variable-speed controller controls in the gear that arranges and train of reduction gears is connected with a joggle, and another output gear in train of reduction gears and the speed regulation gear of spiral thrust device are connected with a joggle;
A kind of stepless speed changer of electric automobile, described spiral thrust device comprises: the speed regulation gear of movable part, the spiral thrust seat of fixed component, the speed regulation gear of described movable part is made up of the external tooth that cylindrical shell is arranged, external tooth and the train of reduction gears output gear of speed regulation gear are connected with a joggle, and move along train of reduction gears output gear; The internal thread of cylindrical shell one end setting of speed regulation gear and the outside thread screwed connection of spiral thrust seat, spiral thrust seat one end is axially fixed in the axis hole of housing; The angular contact ball bearing that the angular contact ball bearing seat that the cylindrical shell the other end of speed regulation gear is arranged is fixed be nested be fixed on the movable cone dish of driving wheel axle sleeve on, form the speed regulation gear of described movable part under the effect of electric speed regulation drive unit, the spiral thrust seat of relative fixed component moves axially, and drives the structure of driving wheel activity cone rim driving shaft axial displacement; And the boss that speed regulation gear side is arranged is corresponding with spacing block fixing on housing.
A kind of stepless speed changer of electric automobile, described spiral thrust device or replace with ball screw thrust device; Ball screw thrust device is made up of speed regulation gear, ball, spiral thrust seat, speed regulation gear is connected and composed by the external tooth on cylindrical shell and cylindrical shell, the ball be connected is evenly equipped with in the spiral channel formed between the internal thread of described cylindrical shell one end and the outside thread of spiral thrust seat, the cylindrical shell the other end is nested with on the axle sleeve of the movable cone dish of driving wheel by angular contact ball bearing, forms the thrust structure that speed regulation gear drives the rim driving shaft axial displacement of driving wheel activity cone.
A kind of stepless speed changer of electric automobile, described driven shaft one end is provided with the reduced diameter section in order to fixing follower fixed cone dish, the centre of driven shaft is provided with the enlarged diameter section being nested with the movable cone dish of the follower moved axially, and the driven shaft of enlarged diameter section is provided with the drive pin corresponding with driver slot on follower movable cone dish axle sleeve; The reduced diameter section of the driven shaft the other end is sequentially provided with spring seat installation position, driven shaft bearing installation position, driven gear installation position.
A kind of stepless speed changer of electric automobile, on the axle sleeve of the movable cone dish of described follower, driver slot is symmetrical isosceles triangle hole, symmetrical isosceles triangle hole is nested with respectively on the drive pin of driven shaft, there is in described isosceles triangle hole an isosceles limit corresponding to drive pin for positive direction actuation transmission torsion, and for another isosceles limit corresponding to the drive pin of reverse direction actuation transmission torsion.
A kind of electric motor car stepless speed variator, described casing has the rear chamber that the housing of stepless speed variator and bonnet are combined into, and housing and protecgulum be combined into before cavity;
Described rear chamber has the driving wheel transfer mechanism cavity arranging driving wheel transfer mechanism, above the side level of described driving wheel transfer mechanism cavity, there is the cavity arranging electric speed regulation drive unit, there is above opposite side level the cavity arranging follower transfer mechanism; The housing corresponding with described driving wheel transfer mechanism cavity has makes the driving shaft of driving wheel transfer mechanism pass and bearings mounted circular mounting hole; Corresponding with the circular mounting hole of housing and be coaxially arranged with to hold the circular cavity of the induction coil that the driving shaft of driving wheel transfer mechanism and driving shaft are nested with; The housing corresponding with described follower transfer mechanism cavity has makes the driven shaft of follower transfer mechanism pass and bearings mounted circular mounting hole;
Have in described front cavity in order to hold with driven shaft on be nested with driven gear cavity, there is cavity in order to hold the final gear be connected with a joggle with the driven gear that is nested with on driven shaft, have in order to arrange and the cavity of differential mechanism that final gear is connected with a joggle;
The side being positioned at the cavity that driven gear is set in order to the cavity arranging final gear had in front cavity, the described cavity arranging differential mechanism is positioned at the side, below of the cavity arranging final gear; Described cavity, the cavity arranging final gear and the cavity that arranges differential mechanism arranging driven gear is circular cavity;
The slave axis line 26 of the shaft axis of the circular cavity of differential mechanism 15, the circular cavity of driven gear 28, the shaft axis of final gear 14 circular cavity three some lines crossing with cross section are obtuse triangle, and the shaft axis Section Point of the circular cavity of differential mechanism 15 is obtuse angle through shaft axis Section Point to the angle of slave axis line 26 Section Point of the circular cavity of driven gear of final gear 14 circular cavity.
Owing to adopting technological scheme as above, the utility model has following superiority:
A kind of stepless speed changer of electric automobile, can meet the requirement of running at high speed with low speed grade climbing performance simultaneously; The performance requirement of electric vehicle reversing can also be met, and when climbing, the electric current needed for low speed is adopted to remain unchanged, grade ability is strong, can not be excessive because of discharge current, and bring a series of drawback such as efficiency [A1] reduction, shorter battery life that battery durable mileage declines, battery uses.Its structure is simple, easy to operate, cost of production is low, is easy to popularize.
Accompanying drawing explanation
Fig. 1 is the structural representation of stepless speed changer of electric automobile of the present invention.
Fig. 2 is that driving wheel transmission drives with electric speed regulation the schematic diagram be connected through spiral thrust.
Fig. 3 is the structural representation of follower transfer mechanism.
Fig. 4 is the housing structure schematic diagram of electric vehicle infinitely variable transmission;
Fig. 5 is the spiral thrust structural scheme of mechanism of electric vehicle infinitely variable transmission;
Fig. 6 is the structural representation of ball screw thrust device.
Fig. 7 is with tri-angle-holed driven movable cone dish structural representation.
In figure: 1--power motor, 2--regulates motor, 3--Speed sensing circle, 4--train of reduction gears, 4.1--input gear, 4.2--output gear, 5--driving wheel fixed cone dish, 6--driving belt, the movable cone dish of 7--driving wheel, 8--speed regulation gear, 8.1--cylindrical shell, 8.2--external tooth, 8.3--angular contact ball bearing, 8.4--boss, 9--spiral thrust seat, 9.1--ball, 10--position transducer, 11--follower fixed cone dish, the movable cone dish of 12--follower, 12.1--axle sleeve, 12.2--is tri-angle-holed, 13--drive pin, 14--final gear, 15--differential mechanism, 16--spring seat, 16.1--oil sealing, 17--bonnet, 18--main casing, 19--protecgulum, 20--thrust spring, 21--thrust-bearing, 22--driving shaft speed probe, 23--output speed sensor, the shockproof sealing surface 24 of 24--, 25--driving shaft axis, 26--driven shaft axis, the driven bearing of 27--, 28--driven gear.
Embodiment
Below in conjunction with accompanying drawing, also by best embodiment, the present invention is described in detail.
As shown in Fig. 1,2,3,4,5,6,7, a kind of stepless speed changer of electric automobile, comprise: housing, driving wheel transfer mechanism, follower transfer mechanism, electric speed regulation drive unit, spiral thrust device, the driving wheel of the driving wheel transfer mechanism in described housing is connected with the follower of follower transfer mechanism by driving belt 6; Described driving wheel transfer mechanism is formed by connecting the driving wheel to follower transfer mechanism transfer of torque that the driving shaft of power motor 1 and driving shaft are arranged, described driving wheel is made up of the movable cone dish 7 of the driving wheel fixed cone dish 5 be fixed on driving shaft and the driving wheel be nested with on driving shaft, and the movable cone dish 7 of driving wheel is connected with electric speed regulation drive unit by the spiral thrust device on driving shaft;
Described electric speed regulation drive unit comprises: variable-speed controller, adjustment motor 2 and train of reduction gears 4, input gear 4.1 in gear and train of reduction gears that the adjustment motor 2 that variable-speed controller controls is arranged is connected with a joggle, and another output gear 4.2 in train of reduction gears and the speed regulation gear 8 of spiral thrust device are connected with a joggle; As shown in Figure 1, 2.
Described spiral thrust device comprises: the speed regulation gear 8 of movable part, the spiral thrust seat 9 of fixed component, the speed regulation gear 8 of described movable part is made up of the external tooth 8.2 that cylindrical shell 8.1 is arranged, external tooth 8.2 and the train of reduction gears output gear 4.2 of speed regulation gear are taken turns and are connected with a joggle, and move along train of reduction gears output gear 4.2; The internal thread of cylindrical shell 8.1 one end setting of speed regulation gear and the outside thread screwed connection of spiral thrust seat 9, spiral thrust seat 9 one end is axially fixed in the axis hole of housing; The angular contact ball bearing 8.3 that the angular contact ball bearing seat that cylindrical shell 8.1 the other end of speed regulation gear is arranged is fixed be nested be fixed on the movable cone dish 7 of driving wheel axle sleeve on, form the speed regulation gear 8 of described movable part under the effect of electric speed regulation drive unit, the spiral thrust seat 9 of relative fixed component moves axially, and drives the movable cone dish 7 of driving wheel along the structure of driving shaft axial displacement; And the boss 8.4 that speed regulation gear 8 side is arranged is corresponding with spacing block fixing on housing.As shown in Fig. 2,5.
Described follower transfer mechanism comprises: follower, driven shaft, driven gear, follower by the follower fixed cone dish 11 be fixed on driven shaft with to be nested with on driven shaft the movable cone dish 12 of follower and to be combined and to form, follower movable cone dish 12 axle sleeve is outside equipped with the thrust spring 20 moved axially to follower fixed cone dish 11, thrust spring 20 one end contacts with the movable cone dish of follower, thrust spring 20 the other end with to be fixed on driven shaft spring seat fixing thrust-bearing 21 and to contact, and follower movable cone dish 12 axle sleeve radial direction is provided with the driver slot to driven shaft transfer of torque, driver slot is nested with on the drive pin 13 of driven shaft, driven gear on driven shaft is connected with a joggle by reduction gear 14 and differential mechanism 15, as shown in Figure 3.
Wherein, the movable cone dish 7 of driving wheel has under electric speed regulation drive unit, the effect of spiral thrust device to be done and driving wheel fixed cone dish 5 moving axially in opposite directions, and the movable cone dish 12 of the follower of movement has work and follower fixed cone dish 11 moving axially dorsad under the effect of driving belt; The movable cone dish 7 of the driving wheel that moves axially has the driving belt working diameter in driving wheel " V " the type belt grooves that regulates and forms between driving wheel fixed cone dish 5 and the movable cone dish 7 of driving wheel, and the movable cone dish 12 of follower of the movable cone dish 7 of driving wheel movement dorsad has the driving belt working diameter in follower " V " the type belt grooves that regulates and form between follower fixed cone dish 11 and follower activity cone dish 12; Thus there is the velocity ratio regulating rotating speed between driving shaft and driven shaft;
Wherein, corresponding with driving wheel housing is provided with the position transducer 10 that the movable cone dish 7 of monitoring driving wheel moves axially; Driving shaft is provided with Speed sensing circle 3, the housing corresponding with Speed sensing circle on driving shaft is provided with the driving shaft speed probe 22 of a monitoring driving shaft rotating speed; The housing corresponding with the follower of driven shaft is provided with the output speed sensor 23 that is monitored secondary speed.
The spiral thrust device of this stepless speed changer of electric automobile or replace with ball screw thrust device; Ball screw thrust device is made up of speed regulation gear 8, ball, spiral thrust seat 9, speed regulation gear 8 is connected and composed by the external tooth on cylindrical shell and cylindrical shell, the ball be connected is evenly equipped with in the spiral channel formed between the internal thread of described cylindrical shell one end and the outside thread of spiral thrust seat 9, the cylindrical shell the other end is nested with on the axle sleeve of the movable cone dish 7 of driving wheel by angular contact ball bearing, forms speed regulation gear 8 and drives the movable cone dish 7 of driving wheel along the thrust structure of driving shaft axial displacement.As shown in Figure 6.
Driven shaft one end of this stepless speed changer of electric automobile is provided with the reduced diameter section in order to fixing follower fixed cone dish 11, the centre of driven shaft is provided with the enlarged diameter section being nested with the movable cone dish 12 of follower in axial sliding, the driven shaft of enlarged diameter section is provided with the drive pin 13 corresponding with driver slot on follower movable cone dish 12 axle sleeve; The reduced diameter section of the driven shaft the other end is sequentially provided with spring seat 16 installation position, driven shaft bearing 27 installation position, driven gear 28 installation position.As shown in Figure 3.
On the axle sleeve 12.1 of the movable cone dish 12 of follower of this stepless speed changer of electric automobile, driver slot is symmetrical isosceles triangle hole 12.2, symmetrical isosceles triangle hole 12.2 is nested with respectively on the drive pin 13 of driven shaft, there is in described isosceles triangle hole 12.2 the isosceles limit of drive pin 13 correspondence for positive direction actuation transmission torsion, and another isosceles limit of drive pin 13 correspondence for reverse direction actuation transmission torsion.As shown in Figure 7.
The rear chamber that the housing 18 that the casing of this electric motor car stepless speed variator has stepless speed variator is combined into bonnet 17, and housing 18 be combined into protecgulum 19 before cavity; As shown in Fig. 1,4.
Described rear chamber has the driving wheel transfer mechanism cavity arranging driving wheel transfer mechanism, above the side level of described driving wheel transfer mechanism cavity, there is the cavity arranging electric speed regulation drive unit, there is above opposite side level the cavity arranging follower transfer mechanism; The housing 18 corresponding with described driving wheel transfer mechanism cavity has makes the driving shaft of driving wheel transfer mechanism pass and bearings mounted circular mounting hole; Corresponding with the circular mounting hole of housing 18 and be coaxially arranged with to hold the circular cavity of the induction coil 3 that the driving shaft of driving wheel transfer mechanism and driving shaft are nested with; The housing 18 corresponding with described follower transfer mechanism cavity has makes the driven shaft of follower transfer mechanism pass and bearings mounted circular mounting hole;
Have in described front cavity in order to hold with driven shaft on be nested with driven gear 28 cavity, there is cavity in order to hold the final gear 14 be connected with a joggle with the driven gear that is nested with on driven shaft, have in order to arrange and the cavity of differential mechanism 15 that final gear is connected with a joggle;
The side being positioned at the cavity that driven gear 28 is set in order to the cavity arranging final gear 14 had in front cavity, the described cavity arranging differential mechanism 15 is positioned at the side, below of the cavity arranging final gear 14; Described cavity, the cavity arranging final gear and the cavity that arranges differential mechanism arranging driven gear is circular cavity;
The slave axis line 26 of the shaft axis of the circular cavity of differential mechanism 15, the circular cavity of driven gear 28, the shaft axis of final gear 14 circular cavity three some lines crossing with cross section are obtuse triangle, and the shaft axis Section Point of the circular cavity of differential mechanism 15 is obtuse angle through shaft axis Section Point to the angle of slave axis line 26 Section Point of the circular cavity of driven gear of final gear 14 circular cavity; Wherein, the housing 18 that driving wheel transfer mechanism cavity is corresponding and the face that motor 1 is combined are the shockproof sealing surface 24 of elasticity.
The variable-speed controller of this stepless speed changer of electric automobile has the microprocessor of processing signals, by the position transducer 10 of analog-to-digital conversion interface and the displacement of monitoring active movement cone dish 7, is connected with the sensor electrical of monitoring motor speed adjusting position potentiometer; By the driving shaft speed probe 22 of Gather and input interface and monitoring driving shaft rotating speed, be electrically connected with the output speed sensor 23 of monitoring output speed; Be connected with skidding sensor electrical by data-interface; Be electrically connected with the adjustment motor in electric speed regulation drive unit through motor-drive circuit by pulse-width modulation PWM end interface.
During the work of this stepless speed changer of electric automobile, the spiral thrust device controlled by electric speed regulation drive unit, change the driving belt working diameter on the driving wheel of driving wheel transfer mechanism and the follower of follower transfer mechanism, regulate the speed ratio of driving shaft and driven shaft, its mode is as follows:
1), forward travel time, electric speed regulation drive unit is energized, and the adjustment motor that variable-speed controller controls is in and treats working state, and the speed ratio of driving shaft and driven shaft, remains unchanged;
When driving force motor 1 startup optimization, driving force motor 1 drives the driving wheel of driving wheel transfer mechanism to rotate, simultaneously, the microprocessor of variable-speed controller receives the position transducer 10 of driving wheel movable cone dish 7 displacement by monitoring, monitoring receives the driving wheel speed probe 22 of driving shaft rotating speed, monitoring receives the secondary speed sensor 23 of output speed, and monitoring receives the electrical signal controlling driving force motor 1 speed speed line sensor, process through microprocessor, the sense of rotation of regulating and controlling motor 2 and rotating speed, reach the speed ratio automatically regulating driving shaft and driven shaft, control the moment of torsion that wheel shaft is exported,
A) when starting to walk or go up a slope, the microprocessor of variable-speed controller carries out computing to each electrical signal that monitoring receives, compared with the starting of the driving shaft calculated and the speed ratio of driven shaft and the driving shaft of storage and driven shaft or upward slope speed ratio, the speed ratio compared is identical, microprocessor judges increases speed ratio, regulating and controlling motor 2 rotates backward, spiral thrust device is driven to reduce the working diameter of rubber transmission belting 6 on driving wheel by train of reduction gears 4, increase the working diameter of rubber transmission belting 6 on follower, increase moment of torsion;
Wherein, speed regulation gear 8 internal thread of spiral thrust device rotates along the outside thread of spiral thrust seat 9, speed regulation gear 8 is made to drive active movement cone dish 7 slowly to leave initiatively fixed cone dish 5 along axle, increase cross section between the movable cone dish 7 of driving wheel and driving wheel fixed cone dish 5 and form the spacing of " V " type groove, driving belt 6 is moved to drive sprocket axle core, reduces the working diameter of driving wheel upper driving band 6;
Simultaneously, along with the dragging of driving belt 6 at follower is loosened, on driven shaft, the movable cone dish 12 of follower is by the effect of thrust spring 20 axial force, rubber transmission belting 6 is moved to follower edge, reduce cross section between follower fixed cone dish 11 and follower movable cone dish 12 and form the spacing of " V " type groove, thus realize the movable cone dish 12 of follower and close up with follower fixed cone dish 11, increase the working diameter of rubber transmission belting 6 on follower, thus reach deceleration;
On follower movable cone dish 12 axle sleeve, torque force is directly delivered on driven shaft by drive pin 13 by the inclined-plane, isosceles limit in isosceles triangle hole 12.2, and the driven gear 28 on driven shaft is by final gear 14 externally output torque power;
B) when level road, the microprocessor of variable-speed controller carries out computing to each electrical signal that monitoring receives, the driving shaft calculated and the speed ratio of driven shaft with the driving shaft of storage compared with the level road speed ratio of driven shaft, the speed ratio compared is identical, microprocessor judges reduces speed ratio, send instruction, regulating and controlling motor 2 rotates forward, and regulates motor 2 by train of reduction gears 4, spiral thrust device, the working diameter of rubber transmission belting 6 on driving wheel to be increased; On follower, the working diameter of rubber transmission belting 6 reduces, and reaches the auxiliary object accelerated;
Wherein, speed regulation gear 8 internal thread of spiral thrust device rotates along the outside thread of spiral thrust seat 9, the movable cone dish 7 of driving wheel that speed regulation gear 8 is connected by angular contact ball bearing 8.3 is axially slowly mobile to work along driving wheel fixed cone dish 5, reduce cross section between the movable cone dish 7 of driving wheel and driving wheel fixed cone dish 5 and form the spacing of " V " type groove, along with rubber transmission belting 6 drags the rotation of follower, gradually increase the working diameter of rubber transmission belting 6 between the movable cone dish 7 of driving wheel and driving wheel fixed cone dish 5;
Simultaneously, the rubber transmission belting 6 of tension, impel the movable cone dish 12 of the follower on driven shaft overcome spring force and follower fixed cone dish 11 from, thus realize driven movable cone dish 12 and open with driven fixed cone dish 11, increase cross section between follower fixed cone dish 11 and follower movable cone dish 12 and form the spacing of " V " type groove, reduce the working diameter of rubber transmission belting 6 on follower, thus realize speedup;
When microprocessor monitors receives the electrical signal reduction controlling driving force motor 1 speed potentiometer speed line sensor, microprocessor judges power motor 1 slows down, the adjustment motor 2 of Microprocessor S3C44B0X, makes the speed ratio of driving shaft and driven shaft remain unchanged;
When microprocessor monitors receives the electrical signal of brake, microprocessor sends instruction, make adjustment motor 2 reduce the working diameter of rubber transmission belting 6 on driving wheel by spiral thrust device, increase the working diameter of rubber transmission belting 6 on follower, deceleration auxiliary brake;
C) during descending, the microprocessor of variable-speed controller carries out computing to each electrical signal that monitoring receives, the driving shaft calculated and the speed ratio of driven shaft with the driving shaft of storage compared with the descending speed ratio of driven shaft, the speed ratio compared is identical, Microprocessor S3C44B0X regulates motor 2 static, and the speed ratio of driving shaft and driven shaft remains unchanged;
When microprocessor monitors receives the electrical signal of brake, microprocessor sends instruction, by the working diameter regulating motor 2, spiral thrust device to reduce rubber transmission belting 6 on driving wheel, increase the working diameter of rubber transmission belting 6 on follower, deceleration auxiliary brake;
2), when traveling need be swung to, power motor 1 rotates backward, power motor 1 drives driving wheel to rotate backward, variable-speed controller sends instruction, regulate motor 2 to rotate backward, drive speed regulation gear 8 to rotate by train of reduction gears 4, make speed regulation gear 8 drive active movement cone dish 7 gradually to leave initiatively fixed cone dish 5 vertically, reduce the working diameter of rubber transmission belting 6 on driving wheel, increase the working diameter of rubber transmission belting 6 on follower;
Driving wheel drives follower to reverse by rubber transmission belting 6, on the follower of reversion driven movable cone dish 12 axle sleeve on another inclined-plane, isosceles limit in symmetrical isosceles triangle hole 12.2 drive driven shaft to rotate backward by drive pin 13, driven gear 28 drives wheel shaft to rotate backward by final gear 14, differential mechanism 15, carries out the backward of lower-speed state.
This power motor 1 is directly connect by spline with the driving wheel fixed cone dish 5 of gear, driving wheel fixed cone dish is equipped with the induction coil 3 that is measured rotating speed.The conical surface of driving wheel fixed cone dish and the movable cone dish 7 of driving wheel forms " V " type groove, along with moving axially of the movable cone dish 7 of driving wheel, changes the position of rubber transmission belting 6 on cone dish.Follower fixed cone dish 11 and the movable cone dish 12 of follower keep frequent clamped condition by spring force.When torque is being transferred, rubber transmission belting is applied to the power on driven movable cone dish 12, is delivered on driven shaft by drive pin 13, then drives final gear 14 and differential mechanism 15 externally output torque.When needing speed change, micro computer sends instruction, and regulating and controlling motor 2 drives reduction gear 4, speed regulation gear 8 and spiral thrust mechanism 9, and the movable cone dish 7 of driving wheel is moved axially.
The movable cone dish 7 of driving wheel moves axially stroke, monitors by position transducer 10, and when the movable cone dish 7 of driving wheel falls back on limit position, the boss 8.4 on speed regulation gear 8 is collided with the block on housing, stops the too movement of the movable cone dish 7 of driving wheel.
Power motor 1 is delivered to the moment on driving wheel fixed cone dish, has half to be delivered on the movable cone dish of driving wheel by key, then by rubber transmission belting effect to the driven movable cone dish 12 of follower.Driven movable cone dish 12 is opened two leg-of-mutton holes 12.2, hypotenuse and drive pin 13 produce active force mutually, driven movable cone dish 12 is to while drive pin 13 transmitting force, drive pin 13 produces axial reaction force to the inclined-plane of driven movable cone dish 12, rubber transmission belting 6 is held tighter, its clamping force increases along with the increase of moment of torsion.Electric vehicle " V " type rubber transmission belting interacts with the cone dish that can change V-type well width, and change driving disc and driven disc working diameter make speed ratio change respectively.The change of working diameter is driven by the adjustment motor 2 of microcomputerized control, thus reach self-shifting object.
Above embodiment is the one of the utility model more preferably embodiment, and the usual change that those skilled in the art carry out within the scope of the technical program and replacing should be included in protection domain of the present utility model.
Claims (7)
1. a stepless speed changer of electric automobile, it is characterized in that: comprising: housing, driving wheel transfer mechanism, follower transfer mechanism, electric speed regulation drive unit, spiral thrust device, the driving wheel of the driving wheel transfer mechanism in described housing is connected with the follower of follower transfer mechanism by driving belt (6); Described driving wheel transfer mechanism is formed by connecting the driving wheel to follower transfer mechanism transfer of torque that the driving shaft of power motor (1) and driving shaft are arranged, described driving wheel is made up of movable cone dish (7) of the driving wheel fixed cone dish (5) be fixed on driving shaft and the driving wheel be nested with on driving shaft, and movable cone dish (7) of driving wheel is connected with electric speed regulation drive unit by the spiral thrust device on driving shaft;
Described follower transfer mechanism comprises: follower, driven shaft, driven gear, follower by the follower fixed cone dish (11) be fixed on driven shaft with to be nested with on driven shaft movable cone dish (12) of follower and to combine and form, movable cone dish (12) axle sleeve of follower is outside equipped with the thrust spring (20) moved axially to follower fixed cone dish (11), thrust spring (20) one end contacts with the movable cone dish of follower, thrust spring (20) the other end with to be fixed on driven shaft spring seat fixing thrust-bearing (21) and to contact, and movable cone dish (12) the axle sleeve radial direction of follower is provided with the driver slot to driven shaft transfer of torque, driver slot is nested with on the drive pin (13) of driven shaft, driven gear on driven shaft is connected with a joggle by reduction gear (14) and differential mechanism (15),
Wherein, movable cone dish (7) of driving wheel has under electric speed regulation drive unit, the effect of spiral thrust device to be done and driving wheel fixed cone dish (5) moving axially in opposite directions, and movable cone dish (12) of the follower of movement has work and follower fixed cone dish (11) moving axially dorsad under the effect of driving belt; Movable cone dish (7) of the driving wheel that moves axially has the driving belt working diameter in driving wheel " V " the type belt grooves that regulates and forms between movable cone dish (7) of driving wheel fixed cone dish (5) and driving wheel, and follower activity cone dish (12) of movable cone dish (7) of driving wheel movement dorsad has the driving belt working diameter in follower " V " the type belt grooves that regulates and form between follower fixed cone dish (11) and follower activity cone dish (12); Thus there is the velocity ratio regulating rotating speed between driving shaft and driven shaft;
Wherein, corresponding with driving wheel housing is provided with the position transducer (10) that movable cone dish (7) of monitoring driving wheel moves axially;
Wherein, driving shaft is provided with Speed sensing circle (3), the housing corresponding with Speed sensing circle on driving shaft is provided with the driving shaft speed probe (22) of a monitoring driving shaft rotating speed;
Wherein, corresponding with the follower of driven shaft housing is provided with the output speed sensor (23) that is monitored secondary speed.
2. a kind of stepless speed changer of electric automobile according to claim 1, is characterized in that:
Described electric speed regulation drive unit comprises: variable-speed controller, adjustment motor (2) and train of reduction gears (4), the upper gear arranged of the adjustment motor (2) that variable-speed controller controls is connected with a joggle with the input gear (4.1) in train of reduction gears, and the speed regulation gear (8) of another output gear (4.2) in train of reduction gears and spiral thrust device is connected with a joggle.
3. a kind of stepless speed changer of electric automobile according to claim 1, it is characterized in that: described spiral thrust device comprises: the speed regulation gear (8) of movable part, the spiral thrust seat 9 of fixed component, the speed regulation gear (8) of described movable part is made up of the upper external tooth (8.2) arranged of cylindrical shell (8.1), external tooth (8.2) and the train of reduction gears output gear (4.2) of speed regulation gear are taken turns and are connected with a joggle, and mobile along train of reduction gears output gear (4.2); The internal thread of cylindrical shell (8.1) one end setting of speed regulation gear and the outside thread screwed connection of spiral thrust seat (9), spiral thrust seat (9) one end is axially fixed in the axis hole of housing; The fixing angular contact ball bearing (8.3) of the angular contact ball bearing seat that cylindrical shell (8.1) the other end of speed regulation gear is arranged be nested be fixed on movable cone dish (7) of driving wheel axle sleeve on, form the speed regulation gear (8) of described movable part under the effect of electric speed regulation drive unit, the spiral thrust seat (9) of relative fixed component moves axially, and drives movable cone dish (7) of driving wheel along the structure of driving shaft axial displacement; And the boss (8.4) that speed regulation gear (8) side is arranged is corresponding with spacing block fixing on housing.
4. a kind of stepless speed changer of electric automobile according to claim 3, is characterized in that: described spiral thrust device or replace with ball screw thrust device; Ball screw thrust device is made up of speed regulation gear (8), ball, spiral thrust seat (9), speed regulation gear (8) is connected and composed by the external tooth on cylindrical shell and cylindrical shell, the ball be connected is evenly equipped with in the spiral channel formed between the internal thread of described cylindrical shell one end and the outside thread of spiral thrust seat (9), the cylindrical shell the other end is nested with on the axle sleeve of movable cone dish (7) of driving wheel by angular contact ball bearing, forms speed regulation gear (8) and drives movable cone dish (7) of driving wheel along the thrust structure of driving shaft axial displacement.
5. a kind of stepless speed changer of electric automobile according to claim 1, it is characterized in that: described driven shaft one end is provided with the reduced diameter section in order to fixing follower fixed cone dish (11), the centre of driven shaft is provided with the enlarged diameter section being nested with movable cone dish (12) of follower in axial sliding, the driven shaft of enlarged diameter section is provided with the drive pin (13) that on cone dish (12) axle sleeve movable with follower, driver slot is corresponding; The reduced diameter section of the driven shaft the other end is sequentially provided with spring seat (16) installation position, driven shaft bearing (27) installation position, driven gear (28) installation position.
6. a kind of stepless speed changer of electric automobile according to claim 1, it is characterized in that: the upper driver slot of axle sleeve (12.1) of movable cone dish (12) of described follower is symmetrical isosceles triangle hole (12.2), symmetrical isosceles triangle hole (12.2) is nested with respectively on the drive pin (13) of driven shaft, have in described isosceles triangle hole (12.2) for an isosceles limit corresponding to the drive pin (13) of positive direction actuation transmission torsion, and for another isosceles limit corresponding to the drive pin (13) of reverse direction actuation transmission torsion.
7. a kind of stepless speed changer of electric automobile according to claim 1, is characterized in that: the rear chamber that the housing (18) that described housing has stepless speed variator is combined into bonnet (17), and the front cavity that housing (18) is combined into protecgulum (19);
Described rear chamber has the driving wheel transfer mechanism cavity arranging driving wheel transfer mechanism, above the side level of described driving wheel transfer mechanism cavity, there is the cavity arranging electric speed regulation drive unit, there is above opposite side level the cavity arranging follower transfer mechanism; The housing (18) corresponding with described driving wheel transfer mechanism cavity has makes the driving shaft of driving wheel transfer mechanism pass and bearings mounted circular mounting hole; Corresponding with the circular mounting hole of housing (18) and be coaxially arranged with to hold the circular cavity of the induction coil (3) that the driving shaft of driving wheel transfer mechanism and driving shaft are nested with; The housing (18) corresponding with described follower transfer mechanism cavity has makes the driven shaft of follower transfer mechanism pass and bearings mounted circular mounting hole;
Have in described front cavity in order to hold with driven shaft on be nested with driven gear (28) cavity, there is cavity in order to hold the final gear (14) be connected with a joggle with the driven gear that is nested with on driven shaft, have in order to arrange and the cavity of differential mechanism (15) that final gear is connected with a joggle;
The side being positioned at the cavity that driven gear (28) is set in order to the cavity arranging final gear (14) had in front cavity, the described cavity arranging differential mechanism (15) is positioned at the side, below of the cavity arranging final gear (14); Described cavity, the cavity arranging final gear and the cavity that arranges differential mechanism arranging driven gear is circular cavity;
The slave axis line (26) of the shaft axis of the circular cavity of differential mechanism (15), the circular cavity of driven gear (28), the shaft axis of final gear (14) circular cavity three some lines crossing with cross section are obtuse triangle, and the shaft axis Section Point of the circular cavity of differential mechanism (15) is obtuse angle through shaft axis Section Point to the angle of slave axis line (26) Section Point of the circular cavity of driven gear of final gear (14) circular cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420554511.3U CN204344854U (en) | 2014-09-25 | 2014-09-25 | Stepless speed changer of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420554511.3U CN204344854U (en) | 2014-09-25 | 2014-09-25 | Stepless speed changer of electric automobile |
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| CN204344854U true CN204344854U (en) | 2015-05-20 |
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| CN201420554511.3U Expired - Fee Related CN204344854U (en) | 2014-09-25 | 2014-09-25 | Stepless speed changer of electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131271A (en) * | 2017-05-08 | 2017-09-05 | 重庆高金实业有限公司 | A kind of automatically controlled CVT stepless speed variator systems |
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- 2014-09-25 CN CN201420554511.3U patent/CN204344854U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131271A (en) * | 2017-05-08 | 2017-09-05 | 重庆高金实业有限公司 | A kind of automatically controlled CVT stepless speed variator systems |
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Granted publication date: 20150520 Termination date: 20180925 |