CN104214297A

CN104214297A - Flat driving disk speed regulation type CVT (continuously variable transmission)

Info

Publication number: CN104214297A
Application number: CN201410060739.1A
Authority: CN
Inventors: 谭波
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-24
Filing date: 2014-02-24
Publication date: 2014-12-17
Anticipated expiration: 2034-02-24
Also published as: CN104214297B; WO2015124034A1

Abstract

The invention discloses a flat driving disk speed regulation type CVT (continuously variable transmission). The flat driving disk speed regulation type CVT comprises a shell, a flat driving disk system, a power input system, a middle flat disk system, a power output system, a tight pressing system, a flat driving disk speed regulation ratio system, a middle flat disk speed regulation ratio system and a series-parallel connection structure. The power transmission of the existing most successful CVT depends on a conical disk and a steel belt, and the wide application of the existing CVT is limited due to the limitations of the existing CVT. The power transmission of the flat driving disk speed regulation type CVT provided by the invention depends on tight pressing of flat driving disks and middle flat disks and tight pressing of the middle flat disks and flat driven disks. The invention aims at solving the problem that the speed ratio change range of the existing CVT is over-small, and the aim of expanding the speed ratio change range is achieved by respective up-down movements of the middle flat disks and the flat driving disks.

Description

Initiatively square position speed adjusting type stepless speed variator

Technical field

The invention belongs to stepless speed variator field.

Background technique

Because the most successful stepless speed variator was CVT stepless speed variator in the past, this stepless speed variator is by cone dish and Steel Belt Transmission power, the narrow limitation of this stepless speed variator limits widely using of this stepless speed variator, and stepless speed variator of the present invention is by initiatively square position and middle square position, middle square position and passive square position compress transfer motion power mutually.

Summary of the invention

The object of the invention is to solve the too small problem of former stepless speed variator speed ratio excursion, dividing other to move up and down by middle square position with active square position and reaching the object realizing increasing speed ratio excursion.

Initiatively square position speed adjusting type stepless speed variator, it comprises: housing, initiatively square position system, power feed system, middle square position system, power output system, also has pressing system, initiatively square position speed ratio system, middle square position speed ratio system, series and parallel connections structure.

Initiatively square position system: a pair active square position is coordinated with active square position gear by active square position key, and by active square position nut screwing clamping, initiatively square position nut is just, left-hand thread nut, initiatively square position half support one and active square position half support two there is initiatively square position rack beam, initiatively square position mandrel one is had in the middle part of active square position rack beam initiatively on square position half support one, initiatively square position mandrel two is had in the middle part of active square position rack beam initiatively on square position half support two, initiatively square position half support one and together with initiatively square position half support two to be tightened to active square position support bracket bolt by active square position shaft screw, initiatively square position is rotatably assorted by bearing and active square position mandrel one and active square position mandrel two.

When this stepless speed variator needs reversion, middle square position strides across three kinds of forms of initiatively square position rack beam: 1, initiatively the minimum point of square position rack beam can be equally high with active square position plane, like this when speed changer needs reversion, middle square position is when striding across active square position rack beam, to slide the position of passive square position position consistency when can compress with oil hydraulic cylinder, remain unchanged, now hydraulic cylinder pressure relief; 2, initiatively the minimum point of square position rack beam also can be higher than active square position plane, when speed changer needs reversion, middle square position is when striding across active square position rack beam, slide position when can compress than oil hydraulic cylinder, the position of passive square position closer to hydraulic lever support, to vacate distance for middle square position strides across initiatively square position rack beam.3, initiatively the minimum point of square position rack beam is higher than active square position plane, the step (now hydraulic cylinder pressure relief) of forward and backward conversion in this structure: 1) when main story slowest ratio, and now, square position contacts with passive square position outmost turns; 2) in the middle of, square position is moved (moving to away from output shaft direction) closest to active square position rack beam, now, middle square position has moved on to the extension of passive square position; 3) initiatively square position starts to move down (moving to close to output shaft direction), and both sides are pushed up in middle square position by square position rack beam, and rack beam summit, square position contacts with middle square position; 4) then, initiatively descending (moving to close to output shaft direction) is continued in square position, and middle square position and square position rack beam disengage; 5) in the middle of, square position is near active square position; 6) in the middle of the while of square position and active square position descending (moving to close to output shaft direction), middle square position contacts with outer ring, passive square position, and speed changer is reversion speed ratio maximum rating.This kind of speed changer also only can use positive rotating function, without reverse function.

Power feed system: initiatively square position gear is coordinated by active square position carrier gear and input shaft gear two, input shaft gear one is connected or one by key with input shaft with input shaft gear two, forms an input gear system.There is an input gear system every a pair active square position, the input shaft gear one of multiple input gear system and the engagement of same input intermediate gear, ensure that each active square position rotating speed is identical consistent with active direction, power enters input system by input shaft end, input shaft end can input on intermediate gear, also can on any one input shaft.Input system special case 1: change the input intermediate gear of above-described input system into silent chain, one or more silent chain coordinates with input shaft gear one.

Power output system: output shaft passes in the center hole of fixing passive square position, when oil hydraulic cylinder pressurizes, fixing position, passive square position is relative with position of output axle fixing, or one; Sliding passive square position and output shaft can relative sliding, but can not relatively rotate, and output shaft passes in the center hole of passive square position that slides, and passive square position of sliding is fixedly connected with hydraulic cylinder.

Pressing system: 1, hydraulic compression system comprises: hydraulic lever support is fixedly connected with output shaft, when oil hydraulic cylinder pressurizes, hydraulic lever one end props up passive square position of sliding: hydraulic lever one end is contacted with the passive square position of slip by hydraulic lever block; Hole in the middle part of hydraulic lever and hydraulic lever support hinged, hydraulic plate holds the hydraulic lever the other end: the hole of the hydraulic lever the other end can be hinged with one end of hydraulic lever hinge, the hydraulic lever hinge the other end can be hinged with hydraulic lever hinge base, and hydraulic lever hinge base is fixed in hydraulic plate; Output shaft passes in the center hole of hydraulic plate, and hydraulic plate can relatively it be slided on output shaft.2, spring compression system: brute spring one end props up passive square position of sliding, and the other end props up the snap ring on output shaft, and the snap ring on output shaft is fixedly connected with output shaft.

Pressing system is not limited only to above 2 kinds of modes.

Middle square position system: the middle square position feed screw nut in the support part of middle square position coordinates with middle square position leading screw, middle square position support some coordinated with middle square position by middle square position bearing, the side of middle square position leading screw in middle square position, middle square position feed screw nut and middle square position support are one or are fixedly connected with, and middle square position works between active square position and passive square position (comprising: fixing passive square position, the passive square position in passive square position and centre of sliding).The middle square position feed screw nut that middle square position leading screw can be lead screw, ball-screw (comprising: ball screw and ball screw) and static-pressure lead screw coordinate with it can be slip screw, rolling screw (comprising: ball screw and roller screw) and static pressure screw.

The initiatively speed ratio system of square position: this system can make active square position up, namely move to away from output shaft direction, also active square position can be made descending, namely move to close to output shaft direction, and be each active square position synchronizing moving, in moving process, the shaft axis of each initiatively square position is equal all the time with the distance of the shaft axis of output shaft respectively.

The initiatively speed ratio system special case one of square position: the speed ratio system of each active square position: initiatively square position lead screw shaft bearing is fixedly connected with housing, initiatively leading screw one end, square position is arranged in the lead screw shaft bearing of active square position by bearing, initiatively the square position leading screw the other end is arranged on housing by bearing, initiatively the helical thread portion of square position leading screw coordinates with the active square position feed screw nut on the support of active square position, back rotation is carried out along with active square position leading screw, the axial direction that initiatively square position feed screw nut prolongs initiatively square position leading screw with active square position support together with active square position moves around, realize the speed ratio process of initiatively square position.Initiatively square position leading screw is fixed with initiatively square position screw gear, initiatively square position screw gear is containing worm gear, initiatively square position screw gear coordinates with the active square position speed governing shaftgear on active square position speed governing axle, initiatively speed governing shaftgear in square position is containing worm screw, initiatively speed governing shaftgear in square position is fixedly connected with active square position speed governing axle, initiatively speed governing axle in square position is arranged vertically with active square position leading screw axis, and the active square position speed governing small gear initiatively on square position speed governing axle is fixedly connected with active square position speed governing axle.

Initiatively square position leading screw can be lead screw, ball-screw (comprising: ball screw and ball screw) and static-pressure lead screw, the active square position feed screw nut coordinated with it can be slip screw, rolling screw (comprising: ball screw and roller screw) and static pressure screw, initiatively square position feed screw nut can be fixedly connected with active square position support, also can be slidably connected, namely initiatively square position support can prolong substantially horizontal linear slide that is vertical and active square position leading screw.

The active square position speed governing small gear of the speed ratio system of each active square position coordinates with same active square position speed governing gearwheel, speed governing power passes to an initiatively square position speed governing small gear from active square position speed governing axle head, all the other each active square position speed governing small gears are passed to again by active square position speed governing gearwheel, each active square position speed governing small gear is by the speed ratio system of each active square position, drive each active square position to prolong initiatively square position leading screw axial direction to move around, achieve active square position to the adjustment of speed ratio.

Initiatively square position speed ratio system special case two: initiatively square position speed governing sliding axle two ends are fixedly connected with active square position speed governing sliding axle support, initiatively square position speed governing sliding axle support is fixedly connected with housing, initiatively speed governing sliding axle in square position is in the hole of active square position support, the axial direction that active square position support can prolong initiatively square position speed governing sliding axle moves around, initiatively the little axle of square position speed governing rocking arm is fixed on the support of active square position, initiatively the little axle of square position speed governing rocking arm is in the elongated hole of active square position speed governing one end, initiatively the square position speed governing rocking arm the other end is fixedly connected with active square position speed governing axle, back rotation is carried out like this along with active square position speed governing axle, initiatively speed governing rocking arm in square position swings back and forth, active square position speed governing rocking arm is moved around by the axial direction that initiatively the little axle of square position speed governing rocking arm drives initiatively square position support and active square position to prolong initiatively square position speed governing sliding axle, achieve the speed ratio process of initiatively square position.

Initiatively square position speed ratio system special case three: initiatively square position speed governing sliding axle two ends are fixedly connected with active square position speed governing sliding axle support, initiatively square position speed governing sliding axle support is fixedly connected with housing, initiatively speed governing sliding axle in square position is in the hole of active square position support, the axial direction that active square position support can prolong initiatively square position speed governing sliding axle moves around, initiatively speed governing tooth bar in square position is fixed on the support of active square position, initiatively square position speed regulation gear is fixed on active square position speed governing axle, initiatively square position speed regulation gear coordinates with active square position speed governing tooth bar, back rotation is carried out like this along with active square position speed governing axle, initiatively square position speed regulation gear also carrys out back rotation, initiatively square position speed regulation gear is moved around by the axial direction that initiatively initiatively square position speed governing sliding axle is prolonged in square position speed governing rack drives active square position support and active square position, achieve the speed ratio process of initiatively square position.

Middle square position speed ratio system: the speed ratio system of each middle square position: middle square position lead screw shaft bearing is fixedly connected with housing, middle leading screw one end, square position is arranged in the lead screw shaft bearing of middle square position by bearing, the middle square position leading screw the other end is arranged on housing by bearing, the helical thread portion of middle square position leading screw coordinates with the middle square position feed screw nut on the support of middle square position, middle square position feed screw nut is fixedly connected with middle square position support, or one, along with the rotation of middle square position leading screw, middle square position feed screw nut with middle square position support and middle square position together between Yanzhong the axial direction of square position leading screw move around, the speed ratio process of square position in the middle of realizing.Middle square position leading screw is fixed with middle square position screw gear, middle square position screw gear can be worm gear, middle square position screw gear coordinates with the middle square position speed governing shaftgear on middle square position speed governing axle, middle square position speed governing shaftgear can be worm screw, middle square position speed governing shaftgear is fixedly connected with middle square position speed governing axle, middle square position speed governing axle and middle square position leading screw axis are arranged vertically, middle square position speed governing axle and output shaft are arranged in parallel, and the middle square position speed governing small gear on middle square position speed governing axle is fixedly connected with middle square position speed governing axle.

The middle square position speed governing small gear of the speed ratio system of each middle square position coordinates with same middle square position speed governing gearwheel, speed governing power passes to a middle square position speed governing small gear from middle square position speed governing axle head, all the other each middle square position speed governing small gears are passed to again by middle square position speed governing gearwheel, each middle square position speed governing small gear is by the speed ratio system of each middle square position, drive square position leading screw axial direction between each Yanzhong, middle square position to move around, achieve the adjustment of middle square position to speed ratio.

Parallel connection and cascaded structure: we are called number in parallel the middle square position quantity contacted with same passive square position (comprising: fixing passive square position, middle passive square position and passive square position of sliding), the present invention can be in parallel with the middle square position of more than 2 (containing 2), the speed ratio system quantity of each active square position is identical with middle square position quantity in parallel, and the speed ratio system quantity of each middle square position is also identical with the middle square position quantity of parallel connection, every two adjacent passive square positions (being comprised: fixing passive square position, to slide the passive square position in passive square position and centre) between structure a speed changer, can connect by more than 2 (containing 2) speed changers, the speed changer quantity of series connection is exactly the serial number of this kind of stepless speed variator, the mode of series connection: the speed changer of multiple series connection shares an output shaft, the speed changer of multiple series connection shares an input shaft, the speed ratio system quantity of each active square position is still identical with the middle square position quantity of parallel connection, the speed ratio system quantity of each middle square position is also identical with the middle square position quantity of parallel connection.

The working principle of this kind of stepless speed variator:

1, power transmission working principle: power enters this stepless speed variator from input shaft end, (1) in the structure of input shaft end on input intermediate gear, power is passed to input intermediate gear by input shaft end, power is passed to each input shaft gear one by input intermediate gear, then passes to each input shaft by input shaft gear one; (2) in the organization plan of input shaft end on an input shaft, power passes to an input shaft from input shaft end one tunnel, and input intermediate gear of separately leading up to passes to each input shaft gear one, then passes to other input shaft by input shaft gear one; (3) in the structure be fixedly connected with input shaft end gear separately at input shaft end, power directly passes to input shaft end gear from input shaft end, pass to input intermediate gear by input shaft end gear, power is passed to each input shaft gear one by input intermediate gear again.Each input shaft is passed to again by each input shaft gear one, power passes to initiatively square position gear by input shaft, input shaft gear two, initiatively square position carrier gear, initiatively initiatively square position passed to again by square position gear, when oil hydraulic cylinder compresses, initiatively power is passed to middle square position by frictional force by square position, power is also passed to fixing passive square position and passive square position of sliding by frictional force by middle square position, and power passes to output shaft by each passive square position, and power spreads out of speed changer by output shaft.

2, hydraulic cylinder works principle: after hydraulic oil pressurization, oil pressure acts on the one hand and slides on passive square position; Act in hydraulic plate on the one hand, hydraulic plate pulls hydraulic lever hinge by hydraulic lever hinge base, and hydraulic lever hinge pulls hydraulic lever again, and hydraulic lever compresses for fulcrum passes through hydraulic lever block passive square position of sliding with hydraulic lever support.

3, speed ratio working principle: square position speed ratio working principle in the middle of (1): speed governing power enters this stepless speed variator by middle square position speed governing axle head, in structure in the middle of middle square position speed governing axle head is fixed on one on square position speed governing axle, speed governing power passes to a middle square position speed governing small gear from middle square position speed governing axle head, speed governing power is passed to middle square position speed governing gearwheel by this middle square position speed governing small gear, all the other each middle square position speed governing small gears passed to again by middle square position speed governing gearwheel, each middle square position speed governing small gear is by the speed ratio system of each middle square position, square position leading screw axial direction between each Yanzhong, middle square position is driven to move around, achieve the adjustment of middle square position to speed ratio, in the structure that middle square position speed governing axle head is fixedly connected with middle square position speed governing shaft end gear separately, middle square position speed governing shaft end gear coordinates with middle square position speed governing gearwheel, speed governing power passes to middle square position speed governing gearwheel from middle square position speed governing axle head by middle square position speed governing shaft end gear, all the other each middle square position speed governing small gears passed to again by middle square position speed governing gearwheel, each middle square position speed governing small gear is by the speed ratio system of each middle square position, square position leading screw axial direction between each Yanzhong, middle square position is driven to move around, achieve the adjustment of middle square position to speed ratio.

(2) speed ratio system special case one working principle of active square position: in the structure that speed governing axle head in active square position is fixed on an active square position speed governing axle, speed governing power passes to an initiatively square position speed governing axle from active square position speed governing axle head one tunnel, initiatively square position speed governing gearwheel passed to by an active square position speed governing small gear of separately leading up to, initiatively all the other each active square position speed governing small gears passed to again by speed governing gearwheel in square position, each active square position speed governing small gear is by the speed ratio system of each active square position, drive each active square position to prolong initiatively square position leading screw axial direction to move around, achieve active square position to the adjustment of speed ratio, at active square position speed governing axle head separately with the structure that initiatively speed governing shaft end gear in square position is fixedly connected with, initiatively speed governing shaft end gear in square position coordinates with active square position speed governing gearwheel, speed governing power passes to initiatively square position speed governing gearwheel from active square position speed governing axle head by active square position speed governing shaft end gear, initiatively all the other each active square position speed governing small gears passed to again by speed governing gearwheel in square position, each active square position speed governing small gear is by the speed ratio system of each active square position, drive each active square position to prolong initiatively square position leading screw axial direction to move around, achieve active square position to the adjustment of speed ratio.

(3) working principle that in the middle of, square position speed ratio and active square position speed ratio combine: our regulation speed ratio is the absolute value of absolute value divided by output shaft rotating speed of input shaft rotating speed, 1) middle square position is first set with active square position all in the position near output shaft, at this moment in the middle of, square position contacts with the outmost turns of active square position, and output shaft is main story, at this moment speed changer is the minimum speed ratio of main story; 2) then middle square position and active square position uplink synchronization (moving to away from output shaft direction), until middle square position contacts with the outmost turns of passive square position, this process waits moment of torsion (Maximum Torque) speed regulation process, and positive transmission velocity ratio increases gradually; 3) then middle square position stops mobile, and initiatively square position is descending, until initiatively square position rack beam is closest to middle square position, at this moment just transmission velocity ratio increases, further until maximum; 4) then initiatively further descending (moving to close to output shaft direction), initiatively square position rack beam strides across middle square position in square position, and this process is forward and backward conversion, and speed ratio reaches reversion slowest ratio, this process entails hydraulic cylinder pressure relief; 5) then middle square position is motionless, and initiatively square position is continued descending, and initiatively the outer ring of square position contacts with middle square position, and this process reversion speed ratio constantly reduces; 6) then initiatively square position and middle square position DL synchronization, until initiatively square position is closest to output shaft, this process waits moment of torsion (Maximum Torque) speed regulation process, and reversion speed ratio reduces, further until reduce to minimum.

Owing to have employed structure of the present invention, make this kind of stepless speed variator have following beneficial effect to be:

1. the power of power transmission and moment of torsion large.

2. power loss is little.

3. there is the function of clockwise and anticlockwise.

4. speed governing ratio coverage is larger.

Accompanying drawing explanation

Below accompanying drawing is described:

Fig. 1 is the sectional view of this kind of stepless speed variator structure, and middle square position is at pto＝power take-off forward position;

Fig. 2 is the sectional view of this kind of stepless speed variator structure, 2 this kind of stepless speed variator series connection;

Fig. 3 is that initiatively square position gear coordinates schematic diagram by active square position carrier gear and input shaft gear one, and initiatively square position gear is in distance output shaft position farthest;

Fig. 4 is that initiatively square position gear coordinates schematic diagram by active square position carrier gear and input shaft gear one, and initiatively square position gear is in the position nearest apart from output shaft;

Fig. 5 is middle square position and middle square position leading screw cooperation figure, and middle square position is in distance output shaft position farthest;

Fig. 6 is the A-A sectional view of Fig. 1, and middle square position is in the position nearest apart from output shaft;

Fig. 7 is initiatively square position and initiatively square position leading screw matching chart, and initiatively square position is in distance output shaft position farthest;

Fig. 8 is the B-B sectional view of Fig. 1, and initiatively square position is in the position nearest apart from output shaft;

Fig. 9 is the J direction view of Fig. 1;

Figure 10 is the I direction view of Fig. 2;

Figure 11 is the H-H sectional view of Fig. 1;

Figure 12 is this kind of stepless speed variator adjusting speed ratio principle schematic, the minimum speed ratio of main story;

Figure 13 is this kind of stepless speed variator adjusting speed ratio principle schematic, main story high pulling torque slowest ratio;

Figure 14 is this kind of stepless speed variator adjusting speed ratio principle schematic, main story slowest ratio;

Figure 15 is this kind of stepless speed variator adjusting speed ratio principle schematic, and middle square position is striding across initiatively square position rack beam;

Figure 16 is this kind of stepless speed variator adjusting speed ratio principle schematic, and reversion speed ratio is maximum;

Figure 17 is this kind of stepless speed variator adjusting speed ratio principle schematic, and reversion speed ratio is minimum;

Figure 18 is that initiatively square position gear passes through initiatively square position carrier gear and input shaft gear one matching chart;

Figure 19 is active square position nut structure figure;

Figure 20 is the C-C sectional view of Figure 19;

Figure 21 is the J-J sectional view of Figure 18;

Figure 22 is the E-E sectional view of Figure 18;

Figure 23 is the F-F sectional view of Figure 18;

Figure 24 is the G-G sectional view of Figure 18;

Figure 25 is initiatively square position support and initiatively square position matching chart;

Figure 26 is initiatively square position support and initiatively square position cooperating structure sectional drawing;

Figure 27 is active square position half support one structural drawing;

Figure 28 is active square position half support two figure;

Figure 29 is active square position rack assumption diagram;

Figure 30 is the plan view of Figure 25;

Figure 31 is in this kind of stepless speed variator of square position parallel connection in the middle of 4, middle square position and middle square position leading screw matching chart, and middle square position is in distance output shaft position farthest;

Figure 32 is in this kind of stepless speed variator of square position parallel connection in the middle of 4, middle square position and middle square position leading screw matching chart, and middle square position is in the position nearest apart from output shaft;

Figure 33 is in this kind of stepless speed variator of square position parallel connection in the middle of 4, initiatively square position and active square position leading screw matching chart, and initiatively square position is in the position nearest apart from output shaft;

Figure 34 is in this kind of stepless speed variator of 4 middle square position parallel connections, initiatively square position and active square position leading screw matching chart, and initiatively square position is in distance output shaft position farthest;

Figure 35 is the K-K sectional view of Figure 33, has removed no other middle square position of display, middle square position support, initiatively square position, initiatively square position support, middle square position leading screw and active square position leading screw;

Figure 36 is the L-L sectional view of Figure 33, has removed no other middle square position of display, middle square position support, initiatively square position, initiatively square position support, middle square position leading screw and active square position leading screw;

Figure 37 is square position support and a middle square position leading screw in the middle of each middle square position has, and the axes normal of middle square position support is in output shaft axis arranged figure;

Figure 38 is square position support and a middle square position leading screw in the middle of each middle square position has, and middle square position support axis and output shaft axis hold several angle layout plan;

Figure 39 is square position support and two middle square position leading screws in the middle of each middle square position has two, and the axes normal of middle square position support is in output shaft axis arranged figure;

Figure 40 is square position support and two middle square position leading screws in the middle of each middle square position has two, and middle square position support axis and output shaft axis hold several angle layout plan;

Figure 41 is the structural drawing of the double-deck bearing in middle square position in the center hole of middle square position;

Figure 42 is the structural drawing of middle square position individual layer bearing in the center hole of middle square position;

Figure 43 be the double-deck bearing in middle square position in the center hole of middle square position, and the structural drawing that middle square position thickeies;

Figure 44 is the D-D sectional view of Figure 41, and middle square position leading screw is ball screw, and the feed screw nut on the support of middle square position is the structural drawing of ball screw;

Figure 45 is the E-E sectional view of Figure 44, and middle square position leading screw is ball screw, and the feed screw nut on the support of middle square position is ball screw, and designates the structural drawing of outer circulation track;

Figure 46 is that middle square position does not have center hole, and middle square position bearing is arranged on the central shaft of middle square position, and the central shaft of middle square position is be fixedly connected with middle square position, or the structural drawing of one;

Figure 47 is the sectional view of this kind of stepless speed variator structure of square position parallel connection in the middle of 5, and middle square position is at pto＝power take-off forward position;

Figure 48 is the sectional view of this kind of stepless speed variator structure, in parallel and 2 this kind of stepless speed variators series connection in square position in the middle of 5, and middle square position is at pto＝power take-off forward position;

Figure 49 is the position of input shaft gear one, input intermediate gear and input shaft end;

Figure 50 is the position assumption diagram of initiatively square position speed governing small gear and initiatively square position speed governing gearwheel cooperation;

Figure 51 is the position assumption diagram that middle square position speed governing small gear and middle square position speed governing gearwheel coordinate;

Figure 52 is the N-N sectional view of Figure 47, and middle square position, in the position nearest apart from output shaft, is this kind of stepless speed variator of square position parallel connection in the middle of 5 in figure;

Figure 53 is middle square position and middle square position leading screw cooperation figure, and middle square position, apart from output shaft position farthest, is this kind of stepless speed variator of square position parallel connection in the middle of 5 in figure;

Figure 54 is the M-M sectional view of Figure 52, square position lead screw shaft bearing section configuration in the middle of display;

Figure 55 is the O-O sectional view of Figure 47, and initiatively square position is in the position nearest apart from output shaft, is this kind of stepless speed variator of square position parallel connection in the middle of 5 in figure;

Figure 56 is initiatively square position and initiatively square position leading screw matching chart, and initiatively square position is apart from output shaft position farthest, is this kind of stepless speed variator of square position parallel connection in the middle of 5 in figure;

Figure 57 is that initiatively square position gear coordinates schematic diagram by active square position carrier gear and input shaft gear one, and initiatively square position gear is in the position nearest apart from output shaft, is this kind of stepless speed variator of square position parallel connection in the middle of 5 in figure;

Figure 58 is that initiatively square position gear coordinates schematic diagram by active square position carrier gear and input shaft gear one, and initiatively square position gear is apart from output shaft position farthest, is this kind of stepless speed variator of square position parallel connection in the middle of 5 in figure;

Figure 59 is in forward and backward transfer process, when initiatively the minimum point of square position rack beam is than active square position plane height, when main story slowest ratio, the schematic diagram that now, square position contacts with passive square position (fixing passive square position, middle passive square position and passive square position of sliding) outmost turns;

Figure 60 is in forward and backward transfer process, when initiatively the minimum point of square position rack beam is than active square position plane height, middle square position is moved (moving to away from output shaft direction) closest to active square position rack beam, now, middle square position has moved on to the schematic diagram of the extension of passive square position;

Figure 61 is in forward and backward transfer process, when initiatively the minimum point of square position rack beam is than active square position plane height, initiatively square position starts to move down (moving to close to output shaft direction), both sides are pushed up in middle square position by square position rack beam, the schematic diagram that rack beam summit, square position contacts with middle square position;

Figure 62 is in forward and backward transfer process, and when initiatively the minimum point of square position rack beam is than active square position plane height, initiatively descending (moving to close to output shaft direction) is continued in square position, the schematic diagram that middle square position and square position rack beam disengage;

Figure 63 is in forward and backward transfer process, and when initiatively the minimum point of square position rack beam is than active square position plane height, middle square position is near the schematic diagram of active square position;

Figure 64 is in forward and backward transfer process, when initiatively the minimum point of square position rack beam is than active square position plane height, middle square position and initiatively square position are simultaneously descending (moving to close to output shaft direction), middle square position contacts with outer ring, passive square position, and speed changer is the schematic diagram of reversion speed ratio maximum rating;

Figure 65 is the structural drawing of initiatively square position speed ratio system special case two, and initiatively square position is in the position away from output shaft;

Figure 66 is the structural drawing of initiatively square position speed ratio system special case two, and initiatively square position is in the position near output shaft;

Figure 67 is the structural drawing of initiatively square position speed ratio system special case three, and initiatively square position is in the position away from output shaft;

Figure 68 is the structural drawing of initiatively square position speed ratio system special case three, and initiatively square position is in the position near output shaft;

In the various figures: square position feed screw nut in the middle of 1-; Speed governing small gear in square position in the middle of 2-; 3-housing; Speed governing axle in square position in the middle of 4-; Speed governing shaftgear in square position in the middle of 5-; Square position leading screw in the middle of 6-; Square position screw gear in the middle of 7-; 8-is square position leading screw initiatively; 9-is square position screw gear initiatively; Square position in the middle of 10-; Square position lead screw shaft bearing in the middle of 11-; Square position support in the middle of 12-; 13-input shaft; 14-slides passive square position; 15-hydraulic cylinder; 16-hydraulic lever hinge; 17-hydraulic lever hinge base; 18-hydraulic plate; 19-input shaft gear-; 20-hydraulic lever; 21-hydraulic lever block; 22-hydraulic plate spring; 23-hydraulic lever support; 24-inputs intermediate gear; 25-hydraulic cylinder oil inlet; 26-hydraulic lever support locating stud; 27-hydraulic circuit; 28-input shaft end; 29-is square position gear initiatively; 30-is the large rocking arm in square position initiatively; 31-is square position small rocker initiatively; 32-is square position small rocker groove hook initiatively; 33-is square position bracket groove hook initiatively; 34-is square position small rocker pinch roller initiatively; 35-is square position rack beam initiatively; 36-fixes passive square position; 37-output shaft; 38-fixes passive square position and fixes snap ring; 39-is square position feed screw nut initiatively; 40-is square position initiatively; 41-is square position speed governing small gear initiatively; 42-is square position support initiatively; 43-is square position speed governing gearwheel initiatively; Speed governing gearwheel in square position in the middle of 44-; 45-bearing of input shaft seat; 46-is square position bridge gear shaft initiatively; Speed governing axle head in square position in the middle of 47-; 48-is square position speed governing shaftgear initiatively; 49-is square position speed governing axle initiatively; 50-is square position lead screw shaft bearing initiatively; 51-is square position carrier gear initiatively; 52-input shaft gear two; 53-ball screw ball; 54-ball nut outer circulation passage; Square position bearing in the middle of 55-; 56-is square position mandrel one initiatively; 57-is square position mandrel two initiatively; 58-is square position nut initiatively; 59-is square position shaft screw initiatively; 60-is square position half support two initiatively; 61-is square position half support one initiatively; 62-is square position key initiatively; 63-is square position support bracket bolt initiatively; 64-is square position speed governing axle head initiatively; 65-input shaft end gear; Speed governing shaft end gear in square position in the middle of 66-; 67-is square position speed governing shaft end gear initiatively; Passive square position in the middle of 68-; 69-is square position speed regulation gear initiatively; 70-is square position speed governing tooth bar initiatively; 71-is square position speed governing sliding axle initiatively; 72-is square position speed governing sliding axle support initiatively; 73-is the little axle of square position speed governing rocking arm initiatively; 74-is square position speed governing rocking arm initiatively.

concrete enforcement formula

At Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 9, Figure 10, Figure 18, Figure 19, Figure 20, Figure 21, Figure 22, Figure 23, Figure 24, Figure 25, Figure 26, Figure 27, Figure 28, Figure 29, Figure 30, Figure 59, Figure 60, Figure 61, Figure 62, Figure 63, visible in Figure 64, initiatively square position system: a pair active square position 40 is coordinated with active square position gear 29 by active square position key 62, and is tightened by active square position nut 58, and initiatively square position nut 58 is just, left-hand thread nut, form a pair active square position 40 to be fixedly connected with active square position gear 29, initiatively square position half support 1 and active square position half support 2 60 there is initiatively square position rack beam 35, initiatively square position mandrel 1 is had in the middle part of active square position rack beam 35 initiatively on square position half support 1, initiatively square position mandrel 2 57 is had in the middle part of active square position rack beam 35 initiatively on square position half support 2 60, initiatively square position half support 1 and initiatively square position half support 2 60 is by initiatively square position shaft screw 59 with together with initiatively square position support bracket bolt 63 is tightened to, initiatively square position 40 is rotatably assorted with active square position mandrel 2 57 by bearing and initiatively square position mandrel 1.

When this stepless speed variator needs reversion, middle square position 10 strides across three kinds of forms of initiatively square position rack beam 35: 1, initiatively the minimum point of square position rack beam 35 can be equally high with active square position 10 plane, like this when speed changer needs reversion, middle square position 10 is when striding across active square position rack beam 35, to slide the position of passive square position 14 position consistency when can compress with oil hydraulic cylinder, remain unchanged, now hydraulic cylinder pressure relief; 2, initiatively the minimum point of square position rack beam 35 also can be higher than active square position plane, when speed changer needs reversion, middle square position 10 is when striding across active square position rack beam 35, slide position when can compress than oil hydraulic cylinder, the position of passive square position 14 closer to hydraulic lever support 23, to vacate distance for middle square position 10 strides across initiatively square position rack beam 35.3, initiatively the minimum point of square position rack beam 35 is higher than active square position plane, in this structure forward and backward conversion step (now hydraulic cylinder pressure relief): 1) at Figure 59 visible, when main story slowest ratio, now, square position 10 contacts with passive square position (fixing passive square position 36, middle passive square position 68 and passive square position 14 of sliding) outmost turns; 2) at Figure 60 visible, middle square position 10 is moved (moving to away from output shaft direction) closest to initiatively square position rack beam 35, now, middle square position 10 has moved on to the extension of passive square position; 3) at Figure 61 visible, initiatively square position 10 starts to move down (moving to close to output shaft direction), and both sides are pushed up in middle square position 10 by square position rack beam 35, and square position rack beam 35 summit contacts with middle square position 10; 4) at Figure 62 visible, then, initiatively square position 40 is continued descending (moving to close to output shaft direction), and middle square position 10 disengages with square position rack beam 35; 5) at Figure 63 visible, middle square position 10 is near initiatively square position 40; 6) at Figure 64 visible, simultaneously descending (moving to close to output shaft direction), middle square position 10 contact with outer ring, passive square position for middle square position 10 and initiatively square position 40, and speed changer is the speed ratio maximum rating that reverses.

Initiatively large rocking arm 30 one end, square position is hinged on leading screw 8 bearing support of active square position, can around the axis rotation of input shaft 37, and the other end is with initiatively square position bridge gear shaft 46 is hinged; Initiatively small rocker 31 one end, square position is hinged on carrier gear 46 axle of active square position, the active square position small rocker pinch roller 34 of the other end props up initiatively square position support 42, and the active square position small rocker groove hook 32 initiatively on square position small rocker 31 hooks the active square position bracket groove hook 33 on active square position support 42, when initiatively square position small rocker pinch roller 34 rolls on active square position support 42, initiatively square position small rocker groove hook 32 hooks initiatively square position bracket groove hook 33 always, further, initiatively square position small rocker groove hook 32 can relative sliding with active square position bracket groove hook 33.

Power feed system: initiatively square position gear 29 is by initiatively square position carrier gear 51 and input shaft gear 2 52 cooperation, and input shaft gear 1 is connected or one by key with input shaft 13 with input shaft gear 2 52, forms an input gear system.There is an input gear system every a pair active square position 40, input shaft gear 1 and the same input intermediate gear 24 of multiple input gear system engage, ensure that each active square position 40 rotating speed is identical consistent with sense of rotation, power enters input system by input shaft end 28, input shaft end 28 can input on intermediate gear 28, also can on any one input shaft 13.Input system special case 1: change the input intermediate gear 28 of above-described input system into silent chain, one or more silent chain coordinates with input shaft gear 1.

Power output system: output shaft 37 passes in the center hole of fixing passive square position 36, when oil hydraulic cylinder pressurizes, fixing position, passive square position 36 is relative fixing with output shaft 37 position, or one; Sliding passive square position 14 and output shaft 37 can relative sliding, but can not relatively rotate, and output shaft 37 passes in the center hole of passive square position 14 that slides, and passive square position 14 of sliding is fixedly connected with hydraulic cylinder 15.

Hydraulic compression system: hydraulic lever support 23 is fixedly connected with output shaft 37, when oil hydraulic cylinder pressurizes, hydraulic lever 20 one end props up passive square position 14 of sliding: hydraulic lever 20 one end is contacted with the passive square position 14 of slip by hydraulic lever block 21; Hole in the middle part of hydraulic lever 20 and hydraulic lever support 23 hinged, hydraulic plate 18 holds another 20 one end of hydraulic lever: the hole of hydraulic lever 20 the other end can be hinged with one end of hydraulic lever hinge 16, the hydraulic lever hinge the other end can cut with scissors 17 with hydraulic lever hinge base and connect, and hydraulic lever hinge base 17 is fixed in hydraulic plate; Output shaft passes in the center hole of hydraulic plate 18, and hydraulic plate 18 can relatively it be slided on output shaft 37.

Visible in FIG, the structure of input shaft end 28 on input intermediate gear 24.

Visible in fig. 2, the structure of input shaft end 28 on any one input shaft 13.

Visible in Figure 49, input shaft end 28 is not on input shaft 13, and also not on input intermediate gear 24, be fixedly connected with separately with input shaft end gear 65, input shaft end gear 65 coordinates with input intermediate gear 24.

At Fig. 1, Fig. 2, Fig. 5, Fig. 6, visible in Figure 11, middle square position speed ratio system: the speed ratio system of each middle square position: middle square position lead screw shaft bearing 11 is fixedly connected with housing 3, middle leading screw 6 one end, square position is arranged in middle square position lead screw shaft bearing 11 by bearing, middle square position leading screw 6 the other end is by bearing holder housing 3, the helical thread portion of middle square position leading screw 6 coordinates with the middle square position feed screw nut 1 on middle square position support 12, middle square position feed screw nut 1 is fixedly connected with middle square position support 12, or one, along with the rotation of middle square position leading screw 6, middle square position feed screw nut 1 with middle square position support 42 and middle square position 10 together between Yanzhong the axial direction of square position leading screw 6 move around, the speed ratio process of square position 10 in the middle of realizing.Middle square position leading screw 6 is fixed with middle square position screw gear 7, middle square position screw gear 7 can be worm gear, middle square position screw gear 7 coordinates with the middle square position speed governing shaftgear 5 on middle square position speed governing axle 4, middle square position speed governing shaftgear 5 can be worm screw, middle square position speed governing shaftgear 5 is fixedly connected with middle square position speed governing axle 4 or one, middle square position speed governing axle 4 is arranged with middle square position leading screw 6 axes normal, middle square position speed governing axle 4 is arranged in parallel with output shaft 37, middle square position speed governing small gear 2 on middle square position speed governing axle 4 is fixedly connected with middle square position speed governing axle 4.

The middle square position speed governing small gear 2 of the speed ratio system of each middle square position coordinates with same middle square position speed governing gearwheel 44.

Visible in Fig. 1, Fig. 2, middle square position speed governing axle 47 end is fixed on a middle square position speed governing axle 4.

Visible in Figure 51, middle square position speed governing axle head 47 is fixedly connected with middle square position speed governing shaft end gear 66 separately, and middle square position speed governing shaft end gear 66 coordinates with middle square position speed governing gearwheel 44.

Visible in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 7, Fig. 8, the initiatively speed ratio system of square position: this system can make active square position 40 up, namely move to away from output shaft 37 direction, also active square position 40 can be made descending, namely move to close to output shaft 37 direction, and be each active square position 40 synchronizing moving, in moving process, the shaft axis of each initiatively square position 40 is equal all the time with the distance of the shaft axis of output shaft 37 respectively.Initiatively square position speed ratio system special case one: the speed ratio system of each active square position: initiatively square position lead screw shaft bearing 50 is fixedly connected with housing 3, initiatively leading screw 8 one end, square position is arranged in active square position lead screw shaft bearing 50 by bearing, initiatively square position leading screw 8 the other end is by bearing holder housing 3, initiatively the helical thread portion of square position leading screw 8 coordinates with the active square position feed screw nut 39 on active square position support 42, back rotation is carried out along with active square position leading screw 8, the axial direction that initiatively square position feed screw nut 39 prolongs initiatively square position leading screw 8 with active square position support 42 together with active square position 40 moves around, realize the speed ratio process of initiatively square position 40.Initiatively square position leading screw 8 is fixed with initiatively square position screw gear 9, initiatively square position screw gear 9 is containing worm gear, initiatively square position screw gear 9 coordinates with the active square position speed governing shaftgear 48 on active square position speed governing axle 49, initiatively square position speed governing shaftgear 48 is containing worm screw, initiatively square position speed governing shaftgear 48 is fixedly connected with active square position speed governing axle 49, initiatively square position speed governing axle 49 is arranged with active square position leading screw 8 axes normal, and the active square position speed governing small gear 41 initiatively on square position speed governing axle 49 is fixedly connected with active square position speed governing axle 49.

Initiatively square position leading screw 8 can be the active square position feed screw nut 39 that lead screw, ball screw, ball screw and static-pressure lead screw coordinate with it can be slip screw, ball screw, roller screw and static pressure screw, initiatively square position feed screw nut 39 can be fixedly connected with active square position support 42, also can be slidably connected, namely initiatively square position support 42 can prolong substantially horizontal linear slide that is vertical and active square position leading screw 8.

The active square position speed governing small gear 41 of the speed ratio system of each active square position coordinates with same active square position speed governing gearwheel 43.

At Figure 65, visible in Figure 66, initiatively square position speed ratio system special case two: initiatively square position speed governing sliding axle 71 two ends are fixedly connected with active square position speed governing sliding axle support 72, initiatively square position speed governing sliding axle support 72 is fixedly connected with housing 3, initiatively speed governing sliding axle 71 in square position is in the hole of active square position support 42, the axial direction that active square position support 42 can prolong initiatively square position speed governing sliding axle 71 moves around, initiatively the little axle 73 of square position speed governing rocking arm is fixed on active square position support 42, initiatively the little axle 73 of square position speed governing rocking arm is in the elongated hole of active square position speed governing rocking arm 74 one end, initiatively square position speed governing rocking arm 74 the other end is fixedly connected with active square position speed governing axle 49, back rotation is carried out like this along with active square position speed governing axle 49, initiatively square position speed governing rocking arm 74 swings back and forth, active square position speed governing rocking arm 74 passes through the initiatively little axle 73 of square position speed governing rocking arm and drives the axial direction that initiatively initiatively square position speed governing sliding axle 71 is prolonged in square position support 42 and active square position 40 to move around, achieve the speed ratio process of initiatively square position.

At Figure 67, visible in Figure 68, initiatively square position speed ratio system special case three: initiatively square position speed governing sliding axle 71 two ends are fixedly connected with active square position speed governing sliding axle support 72, initiatively square position speed governing sliding axle support 72 is fixedly connected with housing 3, initiatively speed governing sliding axle 71 in square position is in the hole of active square position support 42, the axial direction that active square position support 42 can prolong initiatively square position speed governing sliding axle 71 moves around, initiatively square position speed governing tooth bar 70 is fixed on active square position support 42, initiatively square position speed regulation gear 69 is fixed on active square position speed governing axle 49, initiatively square position speed regulation gear 69 coordinates with active square position speed governing tooth bar 70, back rotation is carried out like this along with active square position speed governing axle 49, initiatively square position speed regulation gear 69 also carrys out back rotation, active square position speed regulation gear 69 passes through initiatively square position speed governing tooth bar 70 and drives the axial direction that initiatively initiatively square position speed governing sliding axle 71 is prolonged in square position support 42 and active square position 40 to move around, achieve the speed ratio process of initiatively square position.

Visible in Figure 35, initiatively square position speed governing axle head 64 is fixed on an active square position speed governing axle 49.

Visible in Figure 50, initiatively square position speed governing axle head 64 is fixedly connected with active square position speed governing shaft end gear 67 separately, and initiatively square position speed governing shaft end gear 67 coordinates with active square position speed governing gearwheel 43.

At Fig. 1, Fig. 2, Fig. 5, Fig. 6, Figure 37, Figure 38, Figure 39, Figure 40, Figure 41, Figure 42, Figure 43, Figure 44, Figure 45, visible in Figure 46, middle square position system: the middle square position feed screw nut 1 in support 12 part of middle square position coordinates with middle square position leading screw 6, middle square position support 12 some coordinated with middle square position 10 by middle square position bearing 55, the side of middle square position leading screw 6 in middle square position 10, middle square position feed screw nut 1 and middle square position support 12 are one or are fixedly connected with, middle square position 10 (comprising: fixing passive square position 36 in active square position 40 and passive square position, to slide the passive square position 68 in passive square position 14 and centre) between work, middle square position leading screw 6 can be lead screw, the middle square position feed screw nut 1 that ball-screw (comprising: ball screw and ball screw) and static-pressure lead screw coordinate with it can be slip screw, rolling screw (comprising: ball screw and roller screw) and static pressure screw.

Several organization plans of middle square position: 1, middle square position bearing 55 is that double-deck bearing is in the center hole of middle square position 10 (see Figure 41).2, middle square position bearing 55 is that individual layer bearing is in the center hole of middle square position 10 (see Figure 42).3, middle square position bearing 55 be double-deck bearing in the center hole of middle square position 10, and middle square position 10 thickeies (see Figure 43).4, middle square position 10 does not have center hole, and middle square position bearing 55 is arranged on the central shaft of middle square position 10, and the central shaft of middle square position 10 is be fixedly connected with middle square position 10, or one (see Figure 46).Middle square position support 12 kind: 1, there is square position leading screw 6 in the middle of a middle square position support 12 and each middle square position 10, and the axes normal of middle square position support 12 is in output shaft 37 axis (see figure: 37); 2, there is square position leading screw 6 in the middle of a middle square position support 12 and each middle square position 10, and middle square position support 12 axis and output shaft 37 axis hold several angle (see Figure 38); 3, there are square position leading screws 6 in the middle of two middle square position supports 12 and two each middle square position 10, and the axes normal of middle square position support 12 is in output shaft 37 axis (see Figure 39); 4, there are square position leading screws 6 in the middle of two middle square position supports 12 and two each middle square position 10, and middle square position support 12 axis and output shaft 37 axis hold several angle (see Figure 40).

Visible in fig. 12, the minimum speed ratio of main story, middle square position 10 and initiatively square position 40 are all in the position near output shaft 37.

Visible in fig. 13, main story high pulling torque slowest ratio, middle square position 10 and initiatively square position 40 are all in the position farthest away from output shaft 37.

Visible in fig. 14, main story slowest ratio, middle square position 10 is in the position farthest away from output shaft 37, and initiatively square position rack beam 35 is closest to middle square position 10.

Visible in fig .15, middle square position 10 is striding across initiatively square position rack beam 35, and middle square position 10 is in the position farthest away from output shaft 37, and one end, middle square position 10 strides across initiatively square position rack beam 35.

Visible in figure 16, reversion speed ratio is maximum, and middle square position 10 is in the position farthest away from output shaft 37, and initiatively square position rack beam 35 is closest to middle square position 10.

Visible in fig. 17, reversion speed ratio is minimum, and initiatively square position 40 is closest to output shaft 37, and middle square position 10 is farthest away from active square position rack beam 35.

Visible in Figure 31, Figure 32, Figure 33, Figure 34, Figure 35, Figure 36, in this kind of stepless speed variator of square position 10 parallel connection in the middle of 4, in the middle of middle square position 10 number ratio 3, middle square position 10 quantity of square position 10 parallel connection adds outside 1/3, what all the other were corresponding to the number of spare parts that middle square position 10 coordinates adds 1/3, and namely each active speed ratio system quantity of square position and the speed ratio system quantity of each middle square position both increase 1/3.But still use square position speed governing gearwheel 44 and an active square position speed governing gearwheel 43 in the middle of an input intermediate gear 24.

Visible in Figure 47, Figure 48, Figure 49, Figure 50, Figure 51, Figure 52, Figure 53, Figure 54, Figure 55, Figure 56, Figure 57, Figure 58, in this kind of stepless speed variator of square position 10 parallel connection in the middle of 5, in the middle of middle square position number ratio 3, the middle square position quantity of square position parallel connection adds outside 2/3, what all the other were corresponding to the number of spare parts that middle square position 10 coordinates adds 2/3, and namely the quantity of each active speed ratio system quantity of square position and the speed ratio system of each middle square position both increases 2/3.But still use square position speed governing gearwheel 44 and an active square position speed governing gearwheel 43 in the middle of an input intermediate gear 24.

In the various figures, parallel connection and cascaded structure: we are called number in parallel middle square position 10 quantity contacted with same passive square position (comprising: fixing passive square position 36, middle passive square position 68 and passive square position 14 of sliding), the present invention can the middle square position 10 of more than 2 (containing 2) in parallel, the speed ratio system quantity of each active square position 40 is identical with middle square position 10 quantity in parallel, and the speed ratio system quantity of each middle square position is also identical with middle square position 10 quantity of parallel connection, every two passive square positions (being comprised: fixing passive square position 36, to slide passive square position 14, middle passive square position 68) between structure a speed changer, can connect by more than 2 (containing 2) speed changers, the speed changer quantity of series connection is exactly the serial number of this kind of stepless speed variator, the mode of series connection: the speed changer of multiple series connection shares an output shaft 37, the speed changer of multiple series connection shares an input shaft 13, the speed ratio system quantity of each active square position is still identical with middle square position 10 quantity of parallel connection, the speed ratio system quantity of each middle square position is also identical with middle square position 10 quantity of parallel connection.

The working principle of this kind of stepless speed variator is described in conjunction with each figure:

1, power transmission working principle: power enters this stepless speed variator from input shaft end 28, (1) in the structure of input shaft end 28 on input intermediate gear 24, power is passed to input intermediate gear 24 by input shaft end 28, power is passed to each input shaft gear 1 by input intermediate gear 24, then passes to each input shaft 13 by input shaft gear 1; (2) in the organization plan of input shaft end 28 on an input shaft 13, power passes to an input shaft 13 from input shaft end 28 1 tunnel, input intermediate gear 24 of separately leading up to passes to each input shaft gear 1, then passes to other input shaft 13 by input shaft gear 1; (3) in the structure be fixedly connected with input shaft end gear 65 separately at input shaft end 28, power directly passes to input shaft end gear 65 from input shaft end 28, pass to input intermediate gear 24 by input shaft end gear 65, power is passed to each input shaft gear 1 by input intermediate gear 24 again.Each input shaft 13 is passed to again by each input shaft gear 1, power passes to initiatively square position gear 29 by input shaft 13, input shaft gear 2 52, initiatively square position carrier gear 51, initiatively initiatively square position 40 passed to again by square position gear 29, when oil hydraulic cylinder compresses, initiatively power is passed to middle square position 10 by frictional force by square position 40, fixing passive square position 36 and passive square position 14 of sliding also are passed to by frictional force in middle square position 10, pass to output shaft 37 by each passive square position, power spreads out of speed changer by output shaft 37.

2, hydraulic cylinder works principle: after hydraulic oil pressurization, oil pressure acts on the one hand and slides on passive square position 14; Act in hydraulic plate 18 on the one hand, hydraulic plate 18 pulls hydraulic lever hinge 16 by hydraulic lever hinge base 17, hydraulic lever hinge 16 pulls hydraulic lever 20 again, and hydraulic lever 20 compresses for fulcrum passes through hydraulic lever block 21 passive square position 14 of sliding with hydraulic lever support 23.

3, speed ratio working principle: square position speed ratio working principle in the middle of (1): speed governing power enters this stepless speed variator by middle square position speed governing axle head 47, in structure in the middle of middle square position speed governing axle head 47 is fixed on one on square position speed governing axle 4, speed governing power passes to a middle square position speed governing small gear 2 from middle square position speed governing axle head 47, speed governing power is passed to middle square position speed governing gearwheel 44 by this middle square position speed governing small gear 2, all the other each middle square position speed governing small gears 2 passed to again by middle square position speed governing gearwheel 44, each middle square position speed governing small gear 2 is by the speed ratio system of each middle square position, square position leading screw 6 axial direction between each Yanzhong, middle square position 10 is driven to move around, achieve the adjustment of the 10 pairs of speed ratios in middle square position, in the structure that middle square position speed governing axle head 47 is fixedly connected with middle square position speed governing shaft end gear 66 separately, middle square position speed governing shaft end gear 66 coordinates with middle square position speed governing gearwheel 44, speed governing power passes to middle square position speed governing gearwheel 44 from middle square position speed governing axle head 47 by middle square position speed governing shaft end gear 66, all the other each middle square position speed governing small gears 2 passed to again by middle square position speed governing gearwheel 44, each middle square position speed governing small gear 2 is by the speed ratio system of each middle square position, square position leading screw 6 axial direction between each Yanzhong, middle square position 10 is driven to move around, achieve the adjustment of the 10 pairs of speed ratios in middle square position.

(2) active square position speed ratio working principle: in the structure that active square position speed governing axle head 64 is fixed on an active square position speed governing axle 49, speed governing power passes to an initiatively square position speed governing axle 49 from active square position speed governing axle head 64 1 tunnel, initiatively square position speed governing gearwheel 43 passed to by an active square position speed governing small gear 41 of separately leading up to, initiatively all the other each active square position speed governing small gears 41 passed to again by square position speed governing gearwheel 43, each active square position speed governing small gear 41 is by the speed ratio system of each active square position, drive each active square position 40 to prolong initiatively square position leading screw 8 axial direction to move around, achieve the adjustment of the initiatively 40 pairs of speed ratios in square position, at active square position speed governing axle head 64 separately with the structure that initiatively square position speed governing shaft end gear 67 is fixedly connected with, initiatively square position speed governing shaft end gear 67 coordinates with active square position speed governing gearwheel 43, speed governing power passes to initiatively square position speed governing gearwheel 43 from active square position speed governing axle head 64 by active square position speed governing shaft end gear 67, initiatively all the other each active square position speed governing small gears 41 passed to again by square position speed governing gearwheel 43, each active square position speed governing small gear 41 is by the speed ratio system of each active square position, drive each active square position 40 to prolong initiatively square position leading screw 8 axial direction to move around, achieve the adjustment of the initiatively 40 pairs of speed ratios in square position.

(3) working principle that in the middle of, square position speed ratio and active square position speed ratio combine: our regulation speed ratio is the absolute value of absolute value divided by output shaft rotating speed of input shaft rotating speed, 1) middle square position 10 is first set with active square position 40 all in the position near output shaft 37, at this moment in the middle of, square position 10 contacts with the outmost turns of active square position 40, and output shaft 37 is main storys, at this moment speed changer is the minimum speed ratio of main story (see Figure 12); 2) then middle square position 10 and active square position 40 uplink synchronization (moving to away from output shaft direction), until middle square position 10 contacts with the outmost turns of passive square position, this process waits moment of torsion (Maximum Torque) speed regulation process, and positive transmission velocity ratio increases (see Figure 13) gradually; 3) then middle square position 10 stops mobile, and initiatively square position 40 is descending, until initiatively square position rack beam 35 is closest to middle square position 10, at this moment just transmission velocity ratio increases, further until maximum (see Figure 14); 4) then initiatively square position 40 is further descending (moving to close to output shaft direction), initiatively square position rack beam 35 strides across middle square position 10, this process is forward and backward conversion, speed ratio reaches reversion slowest ratio, this process entails hydraulic cylinder pressure relief (see Figure 15, Figure 16); 5) then middle square position 10 is motionless, and initiatively square position 40 is continued descending, and initiatively the outer ring of square position 40 contacts with middle square position 10, and this process reversion speed ratio constantly reduces; 6) then initiatively square position 40 and middle square position 10 DL synchronization, until active square position 40 is closest to output shaft 37, this process waits moment of torsion (Maximum Torque) speed regulation process, and reversion speed ratio reduces, further until reduce to minimum (see Figure 17).

Claims

1. active square position speed adjusting type stepless speed variator, it is characterized in that: this stepless speed variator has the speed ratio system of initiatively square position, this system can make active square position up, namely move to away from output shaft direction, also active square position can be made descending, namely move to close to output shaft direction, and be each active square position synchronizing moving, in moving process, the shaft axis of each initiatively square position is equal all the time with the distance of the shaft axis of output shaft respectively.

2. stepless speed variator according to claim 1, it is characterized in that: initiatively speed ratio system special case one structure of square position comprises: initiatively square position lead screw shaft bearing is fixedly connected with housing, initiatively leading screw one end, square position is arranged in the lead screw shaft bearing of active square position by bearing, initiatively the square position leading screw the other end is arranged on housing by bearing, initiatively the helical thread portion of square position leading screw coordinates with the active square position feed screw nut on the support of active square position, back rotation is carried out along with active square position leading screw, the axial direction that initiatively square position feed screw nut prolongs initiatively square position leading screw with active square position support together with active square position moves around, realize the speed ratio process of initiatively square position.

3. stepless speed variator according to claim 1, it is characterized in that, middle square position system comprises: the middle square position feed screw nut in the support part of middle square position coordinates with middle square position leading screw, middle square position support some coordinated with middle square position by middle square position bearing, the side of middle square position leading screw in middle square position.

4. stepless speed variator according to claim 1, it is characterized in that: initiatively speed ratio system special case one structure of square position also comprises: initiatively square position leading screw is fixed with initiatively square position screw gear, initiatively square position screw gear coordinates with the active square position speed governing shaftgear on active square position speed governing axle, initiatively speed governing shaftgear in square position is fixedly connected with active square position speed governing axle, initiatively speed governing axle in square position is arranged vertically with active square position leading screw axis, active square position speed governing small gear initiatively on square position speed governing axle is fixedly connected with active square position speed governing axle, each active square position speed governing small gear coordinates with same active square position speed governing gearwheel.

5. stepless speed variator according to claim 1, is characterized in that: this stepless speed variator can in the middle of 2 square positions in parallel, also can the middle square position parallel connection of more than 2.

6. stepless speed variator according to claim 1, is characterized in that: can connect by 2 speed changers, also can more than 2 speed changers series connection.

7. stepless speed variator according to claim 1, it is characterized in that: hydraulic compression system comprises, hydraulic lever support is fixedly connected with output shaft, when oil hydraulic cylinder pressurizes, hydraulic lever one end props up passive square position of sliding, and the hole in the middle part of hydraulic lever and hydraulic lever support are hinged, the hydraulic plate pulling hydraulic lever the other end, output shaft passes in the center hole of hydraulic plate, and hydraulic plate can relatively it be slided on output shaft.