CN111677832B

CN111677832B - Rolling type stepless speed changer

Info

Publication number: CN111677832B
Application number: CN202010706653.7A
Authority: CN
Inventors: 姚长水
Original assignee: Nanjing Yunzheng Industrial Equipment Co ltd
Current assignee: Nanjing Yunzheng Industrial Equipment Co ltd
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2023-08-11
Anticipated expiration: 2038-12-03
Also published as: CN109555828B; CN111677832A; CN111692306B; CN109555828A; CN111692306A

Abstract

The application relates to a rolling type continuously variable transmission, which mainly comprises a driving disc, wherein the driving disc can rotate around a rotating shaft of the driving disc and integrally and horizontally move; the two transfer wheels are vertically arranged above the driving disc, are respectively arranged at different positions from the center of the driving wheel, and are contacted with the driving disc to generate static friction; the wheel disc of the transfer wheel is split and comprises a plurality of sector wheel pieces; the input shaft A and the input shaft B are respectively connected with two transmission wheels; the input shaft of the differential mechanism is connected with the input shaft A and the input shaft B respectively; and the driving disc driving device is connected with the driving disc and provides power for the rotation and horizontal movement of the driving disc. According to the application, the two transmission wheels are driven by the same driving wheel, and because the linear speeds of the rotating disc at different positions are different, the speeds input by the two input shafts are different, and the speed difference is amplified and output through the differential mechanism, a driving device is not required to be adjusted in a coordinated manner, stepless speed regulation can be realized, and the slipping phenomenon is not easy to occur.

Description

Rolling type stepless speed changer

The application relates to a rolling type stepless speed changer, which is a divisional application of an application patent with the application number of 2018114665687.

Technical Field

The application belongs to the field of speed variators, and particularly relates to a rolling type continuously variable transmission.

Background

The existing continuously variable transmission comprises two pulleys and a driving belt, wherein the inside of the continuously variable transmission is not provided with a gear rotating structure of a traditional gearbox, two driving wheels with changeable diameters are sleeved with the driving belt to drive, two ends of the driving belt are wound on a conical belt wheel, and the outer diameter of the belt wheel is subjected to stepless change according to the oil pressure. The advantages of the speed changer are smooth speed change, no shake and fuel saving. However, when the transmission is in gear change, the pulleys on two sides need to be coordinated and adjusted simultaneously, and the transmission is driven by the friction force of the transmission belt, so that the slipping phenomenon is very easy to occur in the gear change process, energy is lost, and the gear change range is limited.

Disclosure of Invention

A rolling type stepless speed variator is composed of a rolling type stepless speed variator,

the driving disc can rotate around the rotating shaft of the driving disc and integrally and horizontally move;

the transmission wheels comprise a first transmission wheel and a second transmission wheel, the first transmission wheel and the second transmission wheel are vertically arranged above the driving disc, are respectively arranged at different positions away from the center of the driving wheel, and are in contact with the driving disc to generate static friction; the wheel disc of the transfer wheel is split and comprises a plurality of sector wheel pieces;

the input shaft A and the input shaft B are respectively connected with two transmission wheels;

the input shaft of the differential mechanism is connected with the input shaft A and the input shaft B respectively;

the driving disc driving device is connected with the driving disc and used for providing power for the rotation and horizontal movement of the driving disc; the drive disc drive apparatus includes a drive unit,

the driving wheel is connected with the driving disc through a connecting shaft A;

a moving wheel meshed with the driving wheel;

the fixed wheel is meshed with the movable wheel and is fixedly arranged at the position;

the connecting rod fixedly connects the driving wheel with the moving wheel so that the driving wheel and the moving wheel can move simultaneously; the movable wheel is fixedly connected with the fixed wheel, so that the movable wheel and the fixed wheel can move simultaneously;

the power device is connected with the driving wheel and used for driving the driving wheel to horizontally move;

the differential mechanism includes a differential gear mechanism that is configured to rotate about a rotational axis,

the two sun gears are oppositely arranged and are respectively connected with the input shaft A and the input shaft B;

two planetary gears meshed with the two sun gears;

the frame is connected with the two planetary gears;

the bevel gear is fixedly connected with the frame;

a side bevel gear engaged with the bevel gear;

an output shaft connected with the side bevel gear;

the limiting wheels are arranged on two sides of the first transmission wheel and the second transmission wheel and used for limiting the swing of the first transmission wheel and the second transmission wheel;

the drive disc drive apparatus may also be configured such that,

the driven bevel gear is connected with the driving disc through a connecting shaft B;

a drive bevel gear engaged with the driven bevel gear for driving the driven bevel gear;

the fixed mount is used for fixing the driven bevel gear and the driving bevel gear so that the driven bevel gear and the driving bevel gear can move simultaneously;

one end of the driving wheel input shaft is connected with the driving bevel gear;

the rotating sleeve is connected with the driving wheel input shaft through a spline, and the driving wheel input shaft can axially slide in the rotating sleeve and rotate together with the rotating sleeve.

Preferably, the outer circumferential surface of the transfer wheel is spherical, so that the contact between the transfer wheel and the driving disk is static friction.

Preferably, the transfer wheel comprises, in combination,

the mounting disc is mounted in the middle of the transfer wheel, a shaft hole is formed in the middle of the transfer wheel, and grooves are formed in all the peripheral surfaces of the mounting disc;

and the shafts are respectively arranged in the grooves of the mounting plate and are used for connecting the sector wheel plates. The technical scheme provided by the application has at least the following technical effects:

1. the embodiment of the application adopts the driving disk which can rotate around the rotating shaft and integrally and horizontally move; the transmission wheels comprise a first transmission wheel and a second transmission wheel, the first transmission wheel and the second transmission wheel are vertically arranged above the driving disc, are respectively arranged at different positions away from the center of the driving wheel, and are in contact with the driving disc to generate static friction; the wheel disc of the transmission wheel is split and comprises a plurality of sector wheel pieces and other technical means, so that the technical problems of slipping phenomenon and limited speed change range existing in the use of the existing continuously variable transmission are solved; the effect of driving the disc and simultaneously enabling the first transmission wheel and the second transmission wheel to be free from adjusting the two input ends is achieved; meanwhile, the transmission wheel is split, so that sliding friction of the driving disc in the translation process can be prevented, the operation of the transmission is prevented from being influenced, the driving wheel is directly moved without changing the pressure between the transmission wheel and the driving wheel, and the speed can be changed by changing the contact position of the transmission wheel and the driving wheel.

2. According to the embodiment of the application, as the transmission wheel comprises the mounting disc, the mounting disc is arranged in the middle of the transmission wheel, the middle of the transmission wheel is provided with the shaft hole, and the four sides of the transmission wheel are provided with the grooves; the shafts are respectively arranged in the grooves of the mounting plate and are used for connecting the sector wheel plates, so that the technical problem of sliding friction caused by integral translation of the transmission wheel is solved; the technical effects that the sector wheel can rotate around the shaft on the mounting plate by a certain amplitude, offset in a certain range along with the translation of the driving plate and return by centrifugal force of the sector wheel are achieved, and sliding friction between the transmission wheel and the mounting plate is avoided.

3. The embodiment of the application adopts the driving device of the driving disk, which comprises a driving wheel and is connected with the driving disk through a connecting shaft A; a moving wheel meshed with the driving wheel; the fixed wheel is meshed with the movable wheel and is fixedly arranged at the position; the technical means of the device is characterized in that the device comprises a driving wheel, a fixed wheel, a connecting rod, a fixed wheel and a fixed wheel, wherein the driving wheel is fixedly connected with the fixed wheel so that the driving wheel and the fixed wheel can move simultaneously; the technical effects that the driving device transmits power through the movable moving wheel, and the moving wheel can move together with the driving wheel, so that the transmission angle is adjusted, and the driving wheel does not lose rotating power while translating are achieved.

Drawings

FIG. 1 is a schematic view of one embodiment of a rolled continuously variable transmission of the present application;

FIG. 2 is a schematic view of the direction B in FIG. 1;

FIG. 3 is a schematic diagram of the structure of a transfer wheel;

FIG. 4 is an enlarged schematic view of section A-A of FIG. 3;

FIG. 5 is a schematic view of an embodiment of another construction of a drive disk drive apparatus;

in the figure, a driving disc 10, a transmission wheel 20, a sector wheel plate 21, a mounting disc 22, a groove 221 and a shaft 222 are shown; 30 differential, 31 bevel gear, 32 side bevel gear, 33 sun gear, 34 planet wheel, 35 frame; 40 input shaft A, 50 input shaft B, 60 output shaft, 70 limiting wheel, 80 driving disk driving device, 81 connecting shaft A, 82 driving wheel, 83 moving wheel, 84 fixed wheel, 85 fixed shaft, 86 connecting rod, 87 power device; the driving disk driving device structure II 90 is connected with a shaft B, a driven bevel gear 92, a driving bevel gear 93, a driving wheel input shaft 94, a fixing frame 95 and a rotating sleeve 96.

Detailed Description

The embodiment of the application provides a rolling type stepless speed changer, which aims to solve the problems of slipping phenomenon and limited speed change range when the traditional speed changer is used, and two transfer wheels perpendicular to a driving disc are driven by static friction force through the rotation of the driving disc, and wheel discs of the two transfer wheels are formed by a plurality of sector parts, so that the sliding friction with a driving wheel is avoided. The two transmission wheels are respectively arranged on two fixed shafts which are respectively connected with two gears opposite to each other on the differential mechanism, and power is input.

The driving disc is driven by the driving disc driving device to rotate and realize translation, and as the contact positions of the two transmission wheels and the driving disc are different, and the linear speeds of the two transmission wheels are different, the angular speeds of the transmission wheels are different, the rotating speeds of the fixed shafts are different, and the differential speed is enlarged through the differential mechanism, so that the differential range is larger. The technical effects of no need of coordination and adjustment of a driving device, stepless speed regulation and difficult occurrence of slipping can be realized.

For better understanding of the technical scheme of the present application, the following detailed description of the technical scheme of the present application is given with reference to the accompanying drawings and examples:

example 1

An embodiment of the present application provides a rolling continuously variable transmission, as shown in fig. 1, mainly including a driving disc 10, wherein the driving disc 10 can rotate around its own rotation axis and move horizontally as a whole.

The transmission wheel 20 further comprises a first transmission wheel and a second transmission wheel which are identical in structure, the outer circumferential surfaces of the transmission wheels are spherical surfaces, the first transmission wheel and the second transmission wheel are vertically arranged above the driving disc 10 and are respectively arranged at different positions away from the center of the driving disc 10. And the first transfer wheel and the second transfer wheel are in point contact with the driving disc 10 through a certain pressure to generate static friction, and when the driving disc 10 rotates, the transfer wheel 20 is driven to rotate. Since the first transfer wheel and the second transfer wheel are respectively disposed at different positions from the center of the driving disk 10, the linear speeds of driving the first transfer wheel and the second transfer wheel are different, and the rotational speeds of the first transfer wheel and the second transfer wheel are different.

As shown in fig. 3 and 4, the wheel disc of the transfer wheel 20 is split, a mounting disc 22 is provided in the middle of the transfer wheel 20, and a shaft hole is provided in the center of the mounting disc 22 for shaft connection of the transfer wheel; the mounting plate 22 has a certain thickness, and the side surfaces of the mounting plate are provided with grooves 221 along the circumferential direction; the axles 222 are respectively installed in the grooves 221 of the installation plate 22, the wheel disc is divided into a plurality of sector wheel pieces 21, and one ends of the sector wheel pieces 21 are connected to the axles 222 and can rotate around the axles 222 by a certain angle. The arrangement can enable the sector wheel piece 21 of the transfer wheel 20, which is contacted with the driving disk 10, to generate certain offset when the driving disk 10 moves, and reset in the subsequent rotation of the transfer wheel 20 due to the action of centrifugal force, so that the transfer wheel 20 is not enabled to generate sliding friction as a whole, the speed change of the speed changer is enabled to be more stable, the abrasion of equipment is reduced, and meanwhile, when the speed change is needed, the pressure between the transfer wheel and the driving wheel is not required to be changed, the driving wheel is directly moved, and the contact position of the transfer wheel and the driving wheel is changed. In practical use, in order to limit the offset of the segment wheel plates 21, a limiting wheel 70 may be fixedly provided on both sides of each transfer wheel 20.

The transmission device further comprises an input shaft A40 and an input shaft B50, wherein the input shaft A40 and the input shaft B50 are respectively connected with a first transmission wheel and a second transmission wheel, and meanwhile, the input shaft A40 and the input shaft B50 are also connected with a differential mechanism. The differential 30 is a conventional differential structure and comprises two oppositely arranged sun gears 33; the device further comprises two planet gears 34 meshed with the two sun gears oppositely, and a frame 35 connecting the two planet gears 34, wherein the frame 35 is also connected with a bevel gear 31, and the bevel gear 31 is meshed with a side bevel gear 32. The input shaft A and the input shaft B are connected with one of the two sun gears respectively, so that the power of the transmission wheel is input to the input shaft of the differential mechanism through the connection; the output shaft of the embodiment of the present application is connected to the side bevel gear 32, and the speed difference input by the input shaft a40 and the input shaft B50 is converted by the conversion of the differential 30, and output is performed by the output shaft 60.

The embodiment of the present application further includes a drive disk drive 80 coupled to the drive disk 10 for powering rotation and horizontal movement of the drive disk 10. As shown in fig. 2, the driving disk driving apparatus includes a driving wheel 82 connected to the driving disk 10 through a connecting shaft a 81; a moving wheel 83 engaged with the driving wheel 82; a fixed wheel 84 meshed with the moving wheel 83, wherein the fixed wheel 84 is fixedly arranged at a position; wherein the driving wheel 82 and the moving wheel 83 are fixedly connected through a connecting rod 86, so that the driving wheel 82 and the moving wheel 83 can move simultaneously; the moving wheel 83 is fixedly connected with the fixed wheel 84 at the same time, so that the moving wheel 84 can move at the same time, and the fixed wheel 84 provides rotary power for the driving wheel 82 to drive the driving disk 10 to rotate. The driving wheel 82 is further connected with a power device 87 for driving the driving wheel 82 to move horizontally, and the driving wheel 83 can move horizontally, so that when the power device 87 drives the driving wheel 82 to move horizontally, the driving wheel 83 can move along with the driving wheel 82 and still keep engaged with the fixed wheel 84, and the driving disk 10 can realize the actions of rotation and horizontal movement simultaneously.

In use, the operation process of the embodiment of the present application is that the fixed wheel 84 drives the driving wheel 82 to rotate, and then drives the driving disc 10 to rotate, so as to adjust the positions of the two transmission wheels 20 on the driving disc 10, and different speeds are input to the transmission wheels 20 through the driving disc 10, and further different speed differences are input to the input shaft of the differential 30, and power is output through the output shaft 60 after passing through the differential 30. When the output speed is required to be changed in the running process, the driving wheel 82 is driven to horizontally move through the power device 87. In the embodiment of the application, the two transmission wheels are driven by the same driving disc, so that the situation of slipping caused by mismatching of the two adjusting ends can not occur.

Example 2

The present embodiment is different from embodiment 1 in that the structure of the drive disk drive device is changed, and in this embodiment, as shown in fig. 5, the structure mainly includes a driven bevel gear 92 connected to the drive disk 10 through a connecting shaft B91; the driven bevel gear 92 is connected with a driving bevel gear 93 in a meshed manner and is used for driving the driven bevel gear 92, and the driven bevel gear 92 and the driving bevel gear 93 are both arranged in a fixing frame 95 so that the driven bevel gear 92 and the driving bevel gear 93 can move simultaneously. The drive bevel gear 93 is connected with a drive wheel input shaft 94, the drive wheel input shaft 94 extends out of the fixing frame 95 and is connected with a rotary sleeve 96, the drive wheel input shaft 94 and the rotary sleeve 96 are connected through splines, the drive wheel input shaft 94 can axially slide in the rotary sleeve 96 and simultaneously and rotate together with the rotary sleeve 96, the rotary sleeve 96 is connected with a power source, power is input for the drive wheel input shaft 94, the drive bevel gear 92 is driven to rotate by the drive bevel gear 93, and the drive disc 10 is driven to rotate. The fixing frame 95 is connected with a power device for driving the fixing frame to horizontally move.

In specific use, the principle is the same as that described in the above embodiment 1, when the power-driven fixing frame 95 moves horizontally, the driven bevel gear 92 and the driving bevel gear 93 move together with the fixing frame 95 and drive the driving disc 10 to translate, and the driving wheel input shaft 94 can slide in the rotating sleeve 96, so that the driving wheel input shaft 94 can still rotate along with the rotating sleeve 96 to provide rotary power for the driven bevel gear 92 and drive the driving disc 10 to rotate while realizing translation.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A rolling type stepless speed variator is composed of a main body consisting of a main body and a rolling type stepless speed variator,