CN2833236Y

CN2833236Y - Automobile rigid gear stepless transmission case

Info

Publication number: CN2833236Y
Application number: CNU2004200500998U
Authority: CN
Inventors: 徐宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-18
Filing date: 2004-04-18
Publication date: 2006-11-01
Anticipated expiration: 2014-04-18

Abstract

It is an automobile rigid gear stepless transmission case. It mainly drives a universal joint steel ring by an input shaft, drives a rotary circle bevel gear ring, and then drives a planet bevel gear with an overrunning clutch to make a rotational movement with unequal speed on the still and rotary circle bevel gear ring. The main shaft of the planet bevel gear with the overrunning clutch trends into a globular shaped cage and drives it to rotate, and then by driving output shaft fixed to the globular shaped cage realizes the dynamic output. Under the condition that the output line speed of the rotary and circle bevel gear ring doesn't change, it accommodates the rotation of worm and worm wheel, to drive the bevel gear connecting with the worm wheel, to drive a half amplitude circle speed governing bevel gear ring fixedly connected vertically to the still circle bevel gear ring, to adjust the inclination included angle between a pair of still and rotary circle bevel gear rings and the main shaft of the globular shaped cage, and to alter the rotary radius of the globular shaped cage. As a consequence, it achieves the purpose of changing the rotary speed of the globular shaped cage.

Description

Automobile rigid gear infinitely variable transmission

Affiliated technical field

The technical program relates to the speed change gear in the power transmission process, is particularly useful for the variable part behind the motor car engine outputting power.

Background technique

At present, all automatic transmission case can be divided into automatic gear speed change and automatic stepless speed change two big classes by variable speed type on the automobile.Automatically the gear gearbox has the big characteristics of output torque, but complex structure is arranged, maintenance cost height, shortcoming such as oil consumption is big, has gear in the running process and impacts, and comfortable feel is not good enough.And present automatic stepless speed change case is mainly based on the CVT infinitely variable transmission, and the friction cone pulley that it can change diameter by a steel band (or chain) and two changes the output of power speed.It has the power output smoothing, no shifting shock, fuel-efficient advantage.But because its principle is the output that comes transferring power by the frictional force between steel band (or chain) and the cone pulley, so output torque is substantially less than 300N/M.The high pulling torque output area more than 200N/M particularly, loss of torque is huge, so throw switch easily at automobile starting and when going up a slope and slip the slope.This also is the not too popular main cause of present CVT infinitely variable transmission.So the CVT infinitely variable transmission generally is used on minicar and the compact car more.

Summary of the invention

Can't export the shortcoming of high pulling torque in order to overcome existing automatic stepless speed change case, the technical program proposes a kind of rigid gear infinitely variable transmission of brand new.It not only has the characteristics that normal conventional speed-changing gear box transfer of torque is big, energy loss is little, has the moment of torsion output smoothing again, does not have impact, advantage of simple structure.Maximum output variable speed ratio is 5 times, and the maximum transmitted moment of torsion is 980NM (or 100kgm), and moment of torsion can also increase, and energy loss is almost constant, but volume slightly increases.

The technical scheme in the invention for solving the technical problem is: in the gear-box case that similar two spheries link to each other, input power is exported needed setting rotating speed at last respectively by train of reduction gears part, first order spherical cage variable part, spherical cage variable part, the second level, (just change, dally, reverse) output gear wheels part sequence delivery.Wherein, the key that power transmission process is realized is to make the rotation and the revolution motion of variable speed on the annular bevel gear circle of a pair of static and rotation by eight bevel planet gear groups that free wheel device arranged in the first order and the spherical cage variable part, the second level, promote the spherical cage rotation by the main shaft that puts in spherical cage, reach the purpose that changes the spherical cage output speed by changing with the annular bevel gear circle of it a pair of static and rotation that is connected and the angle (also being the turning radius that changes spherical cage) between the spherical cage main shaft.

The beneficial effects of the utility model are: kept the normal conventional speed-changing gear box can transmitting large torque in, have moment of torsion output smoothing, shock-free advantage again, and simple in structure.

Description of drawings

Below in conjunction with accompanying drawing and example the utility model is further specified:

Figure one is that master of the present utility model looks cross section view.

Figure two is the cross section views of overlooking of the present utility model.

Figure three is A-A sectional views of figure two.

Figure four is that the parts number of being is 7 and 12 spherical cage parts.

Figure five is that part number is 6 and 11 the planetary gear set parts that free wheel device is arranged.

Figure six is the utility model speed change transmission principle figure at a slow speed the time.

Speed change transmission principle figure when figure seven is the utility model middling speed.

Speed change transmission principle figure when figure eight is the utility model high speed.

Among the figure: (1) back-geared power input shaft.(2) train of reduction gears.(3) first order input shaft.(4) the universal cross steel ring of the first order.(5) first order rotary annular bevel gear circle.(6) first order has the bevel planet gear group of free wheel device.(7) first order spherical cage.(8) first order output shaft (being again second level input shaft simultaneously) the universal cross steel ring in (9) second level.(10) second level rotary annular bevel gear circle.(11) there is the bevel planet gear group of free wheel device the second level.(12) second level spherical cage.(13) second level output shaft.(14) just change, dally and reverse the gear shift gear train.(15) power output spline.(16) first order worm screw.(17) first order worm gear.(18) first order half range annular speed governing bevel gear circle.(19) the static annular bevel gear circle of the first order.(20) second level worm screw.(21) second level worm gear.(22) second level half range annular speed governing bevel gear circle.(23) the static annular bevel gear circle in the second level.(24) change gear turning lever.(25) the semicircle cantilever mounted of the first order.(26) the semicircle cantilever mounted in the second level.(27) spherical housing.

Embodiment

One, power transmission process:

In figure one, power input shaft (1) → train of reduction gears (the 2) → universal cross steel ring of first order power shaft (3) → first order (4) → first order rotary annular bevel gear circle (5) → first order has the bevel planet gear group (6) of freewheel clutch → first order spherical cage (7) → first order output shaft (being again second level power shaft simultaneously) the universal cross steel ring in (8) → second level (9) → second level rotary annular bevel gear circle (10) → second level that the bevel planet gear group (11) of freewheel clutch → second level spherical cage (12) → second level output shaft (13) → forward, idle running and counter-rotating gear shift gear train (14) → power output spline shaft (15) outputting power are arranged.

Two, core drive transmittance process:

At figure six, figure seven, among the figure eight, in power transmission process, 2 groups of being symmetrically distributed with the most close input and output shaft center of the bevel planet gear group (6 or 11) that free wheel device arranged will promote spherical cage (7 or 12) and turn over miter angle by the main shaft that puts in spherical cage (7 or 12) after, the angular velocity of these 2 groups of gear main shaft revolution just lowers, the bevel planet gear group of 2 groups of band free wheel devicees of being closelyed follow later (6 or 11) substitutes stirs spherical cage (7 or 12), and preceding 2 groups have the bevel planet gear group (6 or 11) of free wheel device instead to be promoted to enclose rotation and the revolution motion of making variable speed on [(19 and 5) or (23 and 10)] a pair of annular bevel gear static and rotation by spherical cage (7 or 12).At this moment, not transferring power, the just idle running of bevel planet gear group (6 or 11) of free wheel device arranged.Just under the drive of the annular bevel gear circle (5 or 10) that rotates, work until enter next all power transmission angle, substituting preceding 2 groups has the bevel planet gear group (6 or 11) of free wheel device to promote spherical cage (7 or 12) commentaries on classics miter angle, and going round and beginning again with this rotates.

Three, speed regulation process:

In figure six, figure seven, figure eight, speed governing power drives the speed governing bevel gear by worm screw (16 or 20) worm gear (17 or 21), drive vertical fixing again and be connected half range annular speed governing bevel gear circle (18 or 22) on the static annular bevel gear circle (19 or 23), thereby change the purpose that reaches change spherical cage (7 or 12) output speed with annular bevel gear circle [(19 and 5) or (23 and 10)] of it a pair of static and rotation that is connected and the angle (also being the turning radius of change spherical cage) between the spherical cage main shaft (8 or 13).

Four, just change, dally and reverse implementation:

In figure one, just change, dally and the turning lever that reverses (24) is stirred one group of gear train (14) that go up to slide at power output spline (15) and meshed just commentaries on classics, idle running, the counter-rotating output that realizes spline output shaft (15) with 2 groups of clockwise and anticlockwise output gear wheels respectively.

Claims

1. automobile rigid gear infinitely variable transmission, in the gear-box case that similar two spheries link to each other, its structure has bevel planet gear group (6) → first order spherical cage (7) → first order output shaft (being again second level input shaft simultaneously) universal cross steel ring in (8) → second level (9) → second level rotary annular bevel gear circle (10) → second level of free wheel device that bevel planet gear group (11) → second level spherical cage (the 12) → second level output shaft (13) of free wheel device → just change is arranged by power input shaft (1) → train of reduction gears (2) → universal cross steel ring of first order input shaft (3) → first order (4) → first order rotary annular bevel gear circle (5) → first order, idle running and counter-rotating gear shift gear train (14) → power output spline (15) order is in transmission connection, it is characterized in that; Power input shaft is meshed with train of reduction gears, train of reduction gears is meshed with first order input shaft, first order input shaft stretches into first order spherical cage from first order spherical cage one end and is connected with the universal cross steel ring of first order inner ring, the first order universal cross steel ring outer ring and first order rotary annular bevel gear circle, first order rotary annular bevel gear circle has the bevel planet gear group of free wheel device to be meshed with the first order, the first order has the bevel planet gear group upper end spindle nose and the first order spherical cage of free wheel device to be slidingly connected, the first order spherical cage the other end and first order output shaft (being again second level input shaft simultaneously) are fixing, second level input shaft stretches into second level spherical cage from second level spherical cage one end and is connected with the second level universal cross steel ring inner ring, universal cross steel ring outer ring, the second level is meshed with second level rotary annular bevel gear circle, second level rotary annular bevel gear circle has the bevel planet gear group of free wheel device to be meshed with the second level, the second level has the bevel planet gear group upper end spindle nose and the second level spherical cage of free wheel device to be slidingly connected, the second level spherical cage the other end and second level output shaft are fixed, second level output shaft with just change, idle running and counter-rotating gear shift gear train are meshed, just change, idle running and counter-rotating gear shift gear train are meshed with the power output spline, the arrangements for speed regulation structure is by the first order and second level worm screw (16,20) with worm gear (17,21) be meshed, be fixed on speed governing bevel gear and half range annular bevel gear circle (18 on the worm gear, 22) be meshed, half range annular bevel gear circle is perpendicular fixedly connected with static annular bevel gear circle (19,23).

2. automobile rigid gear infinitely variable transmission according to claim 1, it is characterized in that: the bevel planet gear group that free wheel device is arranged be by outside, in, interior three layers of bevel gear are formed, and the middle level bevel gear is one with gear shaft and is connected with two free wheel devicees, middle level bevel gear and static annular bevel gear circle (19,23) be meshed, inside and outside two-layer bevel gear is to be connected with gear shaft by free wheel device, and inside and outside two-layer bevel gear and rotary annular bevel gear circle (5,10) are meshed.

3. automobile rigid gear infinitely variable transmission according to claim 1, it is characterized in that: have two little axles to be connected on the inner ring of universal cross steel ring with input shaft, have two little axles to be connected with annular bevel gear circle on the outer ring, the little axle on inner ring and the outer ring is criss-crossing and arranges.