CN201802828U

CN201802828U - Infinitely variable speed transmission device

Info

Publication number: CN201802828U
Application number: CN2009202940016U
Authority: CN
Inventors: 唐小峰; 夏奇松; 罗健; 廖成云; 刘阳; 雍瑜; 刘艳昭
Original assignee: China Jialing Industry Co Ltd
Current assignee: Chongqing Jialing global motor vehicle Co. Ltd.
Priority date: 2009-12-22
Filing date: 2009-12-22
Publication date: 2011-04-20
Anticipated expiration: 2019-12-22

Abstract

An infinitely variable speed transmission device for a motorcycle sled vehicle comprises a drive wheel part arranged on an engine crankshaft, a driven wheel part arranged on a driven shaft and a belt connected between the two parts. Because the infinitely variable speed transmission device can realize the purpose of power separation and reunion through the matching between the quality of a flail block and the elasticity of a molded line and a spring, a special clutch part is eliminated. The flail block is tightly fixed by a hexagon socket set screw with a cone point so as to eliminate a kinetic pair between the flail block and a pin shaft, thereby prolonging the service life of the whole infinitely variable speed transmission device.

Description

A kind of infinitely variable speed transmission

Technical field

The utility model belongs to the machine power transmission field, particularly relates to a kind of snowmoblie infinitely variable speed transmission.

Background technique

Nearly all snowmoblie all adopts the stepless change transmission, and this device mainly is made up of driving wheel parts, belt, follower parts and clutch four parts.The driving wheel parts are by being fixed on fixedly reducing dish I on the engine crankshaft, and can along bent axle axially movable movable reducing dish I, axial pressure spring I, the rotor I etc. that get rid of piece and with it form kinematic pair constituting of putting relative with fixing reducing dish I; The follower parts are mainly by being fixed on fixedly reducing dish II on the driven shaft, and can along driven shaft axially movable movable reducing dish II, axial pressure spring II, buffering bracket and the rotor II etc. that with it form kinematic pair constituting of putting relative with fixing reducing dish II.Belt is positioned at the groove of driving wheel parts and follower parts.Clutch disconnects by friction plate centrifugal force and transmission drum (connecting together with fixing reducing dish II) control power or engages.

When engine operation, with engine crankshaft rotation synchronously get rid of piece under the effect of rotary centrifugal force to bidirectional displacement axially and radially, thereby order about movable reducing dish I axial displacement, push down and drive the belt rotation, belt drives the rotation of follower parts again, friction plate on it overcomes the pressure of return spring to radially expansion under action of centrifugal force, with the coupling of transmission drum, thereby it is gentle behind carriage and rotor II to drive the transmission drum, by the driving gear on the driven shaft that rotates synchronously with their, realize the transmission of power.

The centre distance of the girth of belt and bent axle and driven shaft is certain, when speed change begins, rising along with engine speed, get rid of piece centrifugal force and strengthen, the thrust of driving wheel is strengthened, movable reducing dish I is moved inward, driving pulley wheel footpath is strengthened, reduce in driven pulley wheel footpath simultaneously, the velocity ratio continuous stepless is changed, until reaching the frictional force balance.Therefore, in infinitely variable speed transmission, get rid of the quality size of piece in the driving wheel parts, the angle of swing size of buffering bracket in the follower portion parts, the elastic force size of axial pressure spring must reach the high efficiency that equilibrium value could guarantee infinitely variable speed transmission, just can make vehicle reach good dynamic property, fuel-efficient, pollute few purpose.

Existing infinitely variable speed transmission spreads out of in order to throw off power when starting, and is provided with clutch component in the driven member, is equivalent to all have in driving part and the driven member function of clutch, complex structure, and transmission efficiency is low.

Existing infinitely variable speed transmission, get rid of do not carry out between piece and the bearing pin fastening, both sides are free to rotate, its shortcoming be in the running bearing pin with get rid of easily mutually wearing and tearing of piece, after using a period of time, the bearing pin fracture easily takes place, get rid of the situation of getting rid of piece and rotor I inordinate wear that the variation of piece point of action causes, thus the working life of reducing whole stepless speed variator system.

The model utility content

Provide a kind of infinitely variable speed transmission at bearing pin in the process in existing continuously variable transmittion complex structure, the working procedure with getting rid of the mutual easily deficiency of wearing and tearing of piece.

The technological scheme that its technical problem that solves the utility model adopts is: cancelled traditional clutch device, at this moment, the first section curve curvature radius that gets rid of the piece molded lines is 50～54mm, maximum elastic force when axial pressure spring I initially installs is 140N～160N, and the mass range of getting rid of piece is 54～60g.

Compared with prior art, the utlity model has following advantage:

1. because the utility model is not established full-time clutch device, not only simple in structure, and reduced cost.Adopt the piece that gets rid of of many curved sections molded lines, calculate first section curvature of curve of the molded lines that gets rid of piece simultaneously, the pressure angle of coupling and rotor, when engine speed was lower than certain value, the frictional force that makes driving wheel and belt was zero, thereby realized cutting off the purpose of power; When engine speed was higher than certain value, driving wheel drove the belt rotation, realized power output.

2. because the interior hexagonal awl of employing end Cock screw will get rid of piece and bearing pin is tightened to one, eliminated mutual friction, prolonged bearing pin and got rid of the working life of piece, thereby reduced the probability that whole stepless speed variator breaks down.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the utility model infinitely variable speed transmission structural drawing;

Fig. 2 is Figure 1A-A sectional view;

Fig. 3 is the block structural diagram that gets rid of of the present utility model;

Fig. 4 is traditional piece and bearing pin fit schematic representation of getting rid of;

Fig. 5 is piece and the bearing pin fit schematic representation of getting rid of of the present utility model;

Fig. 6 is piece and the mounting point schematic representation of bearing pin on movable reducing dish of getting rid of of the present utility model.

Embodiment

The utility model is the stepless speed changes devices that is used for the motor of output power 30Kw to 50Kw, and as shown in Figure 1 and Figure 2, this device is made up of driving wheel parts, belt 9, follower parts three parts.Wherein, the driving wheel parts are by fixedly reducing dish I 1 on the bent axle 4 that is fixed on motor 16 and relative and can constituting along the axially movable movable reducing dish I 2 of bent axle, axial pressure spring I 3, the rotor I 6 that gets rid of piece 5 and form kinematic pair with it of putting; Be subjected to getting rid of piece 5 movable reducing dish I 2 being moved axially of centrifugal action; The follower parts are mainly by the fixedly reducing dish II 10 and relative and can constituting along driven shaft 13 axially movable movable reducing dish II 11, axial pressure spring II 15, buffering bracket 13 and the rotor II 12 that forms kinematic pair with it of putting with it that are fixed on the driven shaft.Belt be positioned at fixing reducing dish I 1 and the relative and movable reducing dish I 2 that puts and fixedly reducing dish II 10 with relative and put the groove of movable reducing dish II 11 wheel components with it.

In example shown in Figure 3, get rid of piece 5 adopts many curved sections as face molded lines.Provide a kind of Operating pressure angle after the line segment of a molded lines and rotor I 6 close, the line segment of many types of line provides multiple Operating pressure angle, the demand during different conditions such as taken into account vehicle launch, quicken, run at high speed.Adopt the piece that gets rid of of many curved sections molded lines, (radius of curvature is that (maximum elastic force is 140～160N) and gets rid of the quality of piece (mass range is 54～60g) when initially installing for the elastic force of 50～54mm) coupling axial pressure spring I to calculate first section curvature of curve of the molded lines get rid of piece simultaneously, when engine speed is lower than certain value, the frictional force that makes driving wheel and belt is zero, thereby realizes cutting off the purpose of power; When engine speed was higher than certain value, driving wheel drove the belt rotation, realized power output.Therefore this is suitable for and does not establish full-time clutch device.

In example shown in Figure 4, the original packaged prescription formula of getting rid of has two pairs of kinematic pair: the rotary motion pair between bearing pin 7 and the movable reducing dish I, get rid of the cylindrical movement pair between piece 5 and the bearing pin 7.The conical surface of hexagonal awl end Cock screw 8 matches and will get rid of piece with bearing pin is tightened to one with cone shape hole on the bearing pin in the utility model utilization, has avoided getting rid of that the appearance of piece and bearing pin is mutual weares and teares, thus the working life of improving whole stepless speed variator.

Claims

1. one kind big discharge capacity motorcycle stepless variable speed drive, it is by driving wheel parts that are arranged at engine crankshaft and the follower parts of being located on the driven shaft, and the belt that is connected between two parts is formed, it is characterized in that: cancelled traditional clutch device, at this moment, the first section curve curvature radius that gets rid of the piece molded lines is 50～54mm, and the maximum elastic force during axial pressure spring I assembling is 140N～160N, and the mass range of getting rid of piece is 54～60g; The interior hexagonal awl of employing end Cock screw will get rid of piece and bearing pin is tightened to one.