CN1475683A

CN1475683A - Roller spherical arc disc stepless speed changer

Info

Publication number: CN1475683A
Application number: CNA03133282XA
Authority: CN
Inventors: 崔光彩; 崔晓康
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-28
Filing date: 2003-07-28
Publication date: 2004-02-18
Anticipated expiration: 2023-07-28
Also published as: CN1333185C

Abstract

The invention relates to a roller spherical arc disc stepless speed changer, the transmission principle is that the elastic fluid dynamic pressure lubrication drives the stepless speed change of a fixed shaft gear train. The roller spherical arc disc continuously variable transmission is provided with a plurality of input discs 6 which are contacted with rollers 4 and participate in torque transmission, so that the large torque can be transmitted, the zero rotating speed and the forward and reverse rotation output are realized, the transmission efficiency is high, the transmission ratio range is wide, and the application prospect in automobile vehicles is wide.

Description

Roller spherical arc dish stepless speed variator

The invention belongs to a kind of mechanical stepless transmission.

Existing technology is the pattern of roller arc dish, its input disc has identical gyration center line with output disc, on its input disc and the corresponding end face of output disc, have annular arc groove respectively, around its output shaft, be uniform-distribution with simultaneously the roller that contacts and can swing and freely rotate with annular arc groove on input disc and the output disc.The stepless speed variator of this kind roller arc dish-type formula can be divided into two kinds of patterns again, and a kind of is unilateral, promptly only has the pattern of an input disc and an output disc; Another kind is a symmetric type, promptly has the pattern of two output discs of two input discs of symmetry and symmetry.The stepless speed variator of this kind roller arc dish-type formula can transfer larger torque, and has bigger gear range and higher transmission efficiency, has dropped on automobile at present and has used.Because structural reason, the stepless speed variator of this kind roller arc dish-type formula itself can not be realized zero rotating speed and counter-rotating output, so when using, just must increase fluid torque converter and reverse gear on automobile, makes vehicle can realize gentle start and reversing.

The objective of the invention is In view of the foregoing to provide a kind of high efficiency roller spherical arc dish stepless speed variator that can transmitting large torque, have the output of zero rotating speed and forward and backward, and have bigger gear range.

In order to achieve the above object, thinking of the present invention be around around output shaft with the corresponding position of roller on the input disc identical that evenly distribute with number of rollers, on the end face of input disc, have concave spherical surface and contact with corresponding roller.

The invention of claim 1 is a kind of roller spherical arc dish stepless speed variator, and it comprises: can the output shaft of free rotation ground supporting on housing; The location is connected in the output disc that has annular arc groove on the output shaft and on end face; The roller that evenly distributes around around output shaft and contact and can swing and freely rotate with annular arc groove on the output disc; It is characterized in that: around aforesaid output shaft around with the corresponding position of aforesaid roller on be uniform-distribution with the input disc identical with aforesaid number of rollers, having concave spherical surface on the end face of input disc contacts with corresponding aforesaid roller, have with input disc location and be linked together and can be supported on freely to rotate intermediate gear on the housing, have simultaneously the central gear that is meshed and can freely rotates with all intermediate gears.According to this formation, point contacts in being between roller and input disc and the output disc, and bearing capacity is stronger; Overlap principle near the vertex of a cone that meets mechanical stepless transmission, transmission efficiency is higher; Along with the synchronous swing of roller, output shaft can carry out zero rotating speed and forward and backward output, and has bigger gear range.

Fig. 1 and Fig. 2 are the plan views of structural principle sketch of the present invention.

Fig. 3 is the left side view of Fig. 1 and Fig. 2.

Fig. 1 with reference to the accompanying drawings, Fig. 2 and Fig. 3 are illustrated structure of the present invention and principle.

At first come with reference to the Fig. 1 in the accompanying drawing and Fig. 3, output shaft 1 and input shaft 5 can free rotation ground supporting on housing 2, output disc 3 location that have arc groove on the end face are connected on the output shaft 1, input disc 6 location that have concave spherical surface on intermediate gear 8 and the end face be linked together and can free rotation ground supporting on housing 2, the roller that can swing and freely rotate 4 simultaneously with output disc 3 end faces on annular arc groove and the concave spherical surface on input disc 6 end faces contact, input gear 7 location are connected on the input shaft 5 and with intermediate gear 8 and are meshed, around around output shaft 1, be uniform-distribution with three cover input discs 6, roller 4 and intermediate gear 8, central gear 9 can freely rotate and be meshed with all intermediate gear 8 simultaneously.Need to prove in addition, also can be at two cover or quadruplet input disc 6, roller 4 and the intermediate gears 8 that evenly distribute on every side around output shaft 1.

Rotation is from input shaft 5 inputs, be delivered on the intermediate gear 8 that is meshed with it by input gear 7 then, and then be delivered on two other intermediate gear 8 by central gear 9, be delivered on the output disc 3 through input disc 6 and roller 4 again, finally will rotate output by output shaft 1.When all rollers 4 swing synchronously, continuous variation will take place in the position of the point of contact between roller 4 and output disc 3, the input disc 6, make velocity ratio take place to change continuously, thereby the rotating speed that makes output shaft 1 produces stepless variation, output shaft 1 can produce zero rotating speed and forward and backward output, and has bigger gear range.Need to prove in addition, also can remove input shaft 5 and input gear 7, will rotate from intermediate gear 8 or central gear 9 inputs.

And then come with reference to the Fig. 2 in the accompanying drawing and Fig. 3, centerline direction along output shaft 1, with the symmetrical position of input disc 6 on all have the same input disc 6 that is linked together with intermediate gear 8 location, with the symmetrical position of roller 4 on all have same roller 4, with the symmetrical position of output disc 3 on have same location and be connected in output disc 3 on the output shaft 1.

Rotation is from input shaft 5 inputs, be delivered on the intermediate gear 8 that is meshed with it by input gear 7 then, and then be delivered on two other intermediate gear 8 by central gear 9, through input disc 6 and roller 4 rotation is delivered on the output disc 3 again, finally will rotate output by output shaft 1.When all rollers 4 swing synchronously, continuous variation will take place in the position of the point of contact between roller 4 and output disc 3, the input disc 6, make velocity ratio take place to change continuously, thereby the rotating speed that makes output shaft 1 produces stepless variation, output shaft 1 can produce zero rotating speed and forward and backward output, and has bigger gear range.

Therefore, this roller spherical arc dish stepless speed variator has more wide application prospect on automobile.

Claims

1. roller spherical arc dish stepless speed variator, it comprises: can the output shaft (1) of free rotation ground supporting on housing (2); The location is connected in annular arc groove was gone up and had to output shaft (1) on end face output disc (3); The roller (4) that evenly distributes around around output shaft (1) and contact and can swing and freely rotate with annular arc groove on the output disc (3); It is characterized in that: around described output shaft (1) around with the corresponding position of described roller (4) on be uniform-distribution with the input disc (6) identical with described roller (4) quantity, having concave spherical surface on the end face of input disc (6) contacts with corresponding described roller (4), have and be linked together with input disc (6) location and can the intermediate gear (8) of free rotation ground supporting on housing (2), have simultaneously the central gear (9) that is meshed and can freely rotates with all intermediate gears (8).