CN108691987B

CN108691987B - High speed stepless transmission pulley disc set

Info

Publication number: CN108691987B
Application number: CN201710230085.6A
Authority: CN
Inventors: 吴万章
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-10
Filing date: 2017-04-10
Publication date: 2020-08-04
Anticipated expiration: 2037-04-10
Also published as: CN108691987A

Abstract

The invention provides a high-speed stepless speed changer pulley disc set, wherein an output shaft drives a pulley disc to cause the displacement of a pulley bead along an inclined push surface at the bottom of a containing chamber, the pulley bead axially limited by a pressing inner conical surface is completely limited by a back pressure surface disc to urge the movable pulley disc to the direction of a transmission pulley disc, and a triangular transmission belt between a first belt action disc surface and a second belt action disc surface changes the transmission position by utilizing the reduction change of the distance between the second belt action disc surface of the movable pulley disc and the first belt action disc surface of the transmission pulley disc; the whole structure makes back and forth axial displacement motion on the shaft sleeve by the movable pulley disc generated by the rotation speed of the transmission pulley disc, and the back pressure face disc does not directly have any motion interference on the movable pulley disc, so that the transmission positions of the triangular transmission belt on the first and second belt action disc surfaces are changed, the effect of flexible axial motion of the movable pulley disc on the shaft sleeve is achieved, and the speed change smoothness and speed in the stepless speed change process are effectively improved.

Description

High speed stepless transmission pulley disc set

Technical Field

The invention relates to a pulley disc set of a high-speed stepless transmission, which can increase the flexibility of a movable pulley disc on a shaft sleeve and achieve the effects of smooth speed change action and speed improvement in the stepless speed change process.

Background

According to the prior art of the new patent of "improved disc-pushing hammer for automatic transmission device" in taiwan, such as taiwan No. M275157, a movable transmission face disc is provided with a plurality of hammer chambers, and each hammer chamber is provided with a disc-pushing hammer, and each disc-pushing hammer is limited by a close disc, so that after the movable transmission face disc is started, the movable transmission face disc can be forced to push towards the transmission face disc along the central shaft by the centrifugal outward displacement action of the disc-pushing hammer, and the distance between the movable transmission face disc and the transmission face disc is reduced, so that the transmission position can be changed along with the rotating speed of the movable transmission face disc by the V-shaped transmission belt between the movable transmission face disc and the transmission face disc, thereby achieving the effect of automatic transmission.

That is, in order to achieve the purpose of stepless automatic speed change, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, a plurality of hammer chambers 11 having an inner inclined pressing surface 110 are formed radially at the center of a movable transmission surface disc 1, and a disc-pushing hammer 3 is accommodated in each hammer chamber 11, and each disc-pushing hammer 3 is limited by an inclined disc body 20 attached to the disc 2 on the inner inclined pressing surface 110, as shown in fig. 5 and fig. 6, after the movable transmission surface disc 1 is driven and started by a central shaft 6, the movable transmission surface disc 1 can be pushed toward the transmission surface disc 5 along the central shaft 6 by the centrifugal outward displacement action of the disc-pushing hammer 3, and the V-shaped transmission belt 4 between the movable transmission surface disc 1 and the transmission surface disc 5 can be increased along with the rotation speed of the movable transmission surface disc 1 by the reduced change of the distance between the movable transmission surface disc 1 and the transmission surface disc 5, the change of the transmission speed ratio of the V-shaped transmission belt 4 is achieved by changing the transmission position from inside to outside. Although the conventional continuously variable transmission, as shown in fig. 3 and 6, can force the movable driving face plate 1 to move axially by the centrifugal outward displacement action of the disc-pushing hammer 3, so as to change the distance between the movable driving face plate 1 and the driving face plate 5, thereby achieving the change of the driving position of the V-shaped driving belt 4, however, in order to avoid the disc-pushing hammer 3 from staggering the inclined face plate portion 20 of the abutting disc 2 (the pressing track surface is not deviated) by the V-shaped driving belt 4 being driven to rotate by the driving face plate 5 on the central shaft 6, as shown in fig. 1, 2 and 4, a plurality of guide pillars 12 extend outward from the plate body between the cone chambers 11, and, in the inclined face plate portion 20 of the abutting disc 2, a plurality of concave portions 200 are formed inward, and on the concave portions 200, a plurality of notch guide grooves 21 are formed opposite to the guide pillars 12, and the guide pillars 12 are embedded into the notch guide grooves 21, thereby causing the axial displacement and rotation of the movable driving face plate 1, the movable transmission face plate 1 in rotation drives the abutting plate 2 in the notch guide groove 21 of the abutting plate 2 through the guide post 12, and the abutting plate 2 which cannot be axially displaced tends to form strong frictional resistance between the guide post 12 and the notch guide groove 21 in the axial displacement process of the movable transmission face plate 1, so that the flexibility of changing the distance between the movable transmission face plate 1 and the transmission face plate 5 is reduced, and the smoothness of the motion of the V-shaped transmission belt 4 during the transmission position change (automatic speed change) or the speed of the speed change is influenced.

Disclosure of Invention

The invention provides a pulley disc set of a high-speed stepless transmission, which solves the technical problems in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that:

a pulley disk set of a high-speed stepless transmission is a pulley disk set, and is characterized in that: comprises a transmission pulley disk, a shaft sleeve, a movable pulley disk, a plurality of pulley beads and a back pressure surface disk;

the transmission pulley disc is connected with an output shaft and is provided with a first belt acting disc surface which is inclined outwards;

the shaft sleeve is assembled on the output shaft;

the movable pulley plate is sleeved on the shaft sleeve by a sleeve shaft part, allows axial displacement along the shaft sleeve, has one end opposite to a first belt action plate surface of the transmission pulley plate to form an outward inclined second belt action plate surface, has the other end provided with a plate frame from the periphery of the sleeve shaft part to form a plate chamber, and is radially provided with a plurality of pairs of limiting wall sheets by taking the sleeve shaft part as a center towards the plate frame direction;

the plurality of roller balls are respectively arranged in the containing chambers of the movable roller disc;

the back pressure face disc is provided with a bamboo hat-shaped complete disc body, a complete-shaped inner pressing cone face is arranged inside the disc body, a group of connecting holes are arranged at the upper end of the outer part of the disc body, the group of connecting holes are sleeved on the output shaft and limited by the shaft sleeve not to move in the axial direction of the output shaft, the periphery of the disc body is embedded into the disc chamber of the movable pulley disc to straddle the notch, and the inner pressing cone face forms a pressing hook to the pulley ball;

when the force output shaft drives the pulley disc to cause the pulley beads to displace along the inclined pushing surface at the bottom of the containing chamber of the movable pulley disc, the pulley beads axially limited by the inner pressing surface of the back pressure surface disc are used for forcing the movable pulley disc to the direction of the transmission pulley disc, and the distance between the second belt acting disc surface of the movable pulley disc and the first belt acting disc surface of the transmission pulley disc is reduced and changed to change the transmission position of the triangular transmission belt between the first belt acting disc surface and the second belt acting disc surface.

Wherein, the pril bead is a round pril bead.

Wherein, the polycosan bead is a multilateral push disk hammer type polycosan bead.

Compared with the prior art, the invention has the beneficial effects that: the whole structure, the movable pulley disc generated by the rotation speed of the transmission pulley disc makes back and forth axial displacement motion on the shaft sleeve, the back pressure face disc does not directly have any motion interference on the movable pulley disc, the transmission positions of the triangular transmission belt on the first and second belt action disc surfaces are changed, the effect of flexible axial motion of the movable pulley disc on the shaft sleeve is achieved, and the speed change smoothness and speed in the stepless speed change process are effectively improved.

Drawings

FIG. 1 is an exploded perspective view of a face plate assembly of a conventional continuously variable transmission;

FIG. 2 is a plan view of a face plate set structure of a conventional continuously variable transmission;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a sectional view of the structure of FIG. 2B-B;

FIG. 5 is a schematic plan view of a conventional continuously variable transmission face plate set thrust disc cone during centrifugal displacement;

FIG. 6 is a sectional view of the structure of FIG. 5C-C;

FIG. 7 is a sectional view of the structure of FIG. 5D-D;

FIG. 8 is an exploded perspective view of a pulley disc pack structure according to the present invention;

FIG. 9 is a plan view of the structural assembly of the pulley disc pack of the present invention;

FIG. 10 is a sectional view taken along line E-E of FIG. 9;

FIG. 11 is a sectional view taken along line F-F of FIG. 9;

FIG. 12 is a schematic plan view of a pulley disk of the present invention showing a centrifugal displacement of a pulley disk;

FIG. 13 is a sectional view taken along line G-G of FIG. 12;

FIG. 14 is a view of the H-H section of FIG. 12;

FIG. 15 is an exploded perspective view of another embodiment of a pulley disc pack in accordance with the present invention;

FIG. 16 is a cross-sectional structural view of another embodiment of a pulley disc pack of the present invention;

FIG. 17 is a schematic cross-sectional view of another embodiment of a set of pulley discs of the present invention showing the centrifugal displacement of the pulley beads.

Description of reference numerals: a movable transmission face plate 1; a cone chamber 11; an inner inclined pushing surface 110; a guide post 12; an abutting disc 2; a bevel disk portion 20; a recess 200; a notch guide groove 21; a disc pushing hammer 3; a V-shaped drive belt 4; a transmission face plate 5; a central shaft 6; a drive pulley disk 30; a first belt action plate surface 31; a shaft sleeve 40; a movable pulley disk 50; a sleeve shaft portion 51; a second belt active panel 52; a tray frame 53; a tray chamber 54; a limiting wall piece 55; a notch 56; a storage chamber 57; a slanted push surface 58; (ii) pril bead 60; polygonal push disk hammer type polycosanol bead 60A; a reclining rest surface 61A; a sliding arc surface 62A; a back pressure face plate 70; a tray body 71; pressing against the inner conical surface 72; an assembling hole 73; a power output shaft 80; a v-belt 90.

Detailed Description

The present invention to achieve the above objects, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, wherein:

a high speed continuously variable transmission pulley disk assembly, as shown in fig. 8, 9, 10, 11, is a pulley disk assembly, comprising a transmission pulley disk 30, a shaft sleeve 40, a movable pulley disk 50, a plurality of pulley beads 60 and a back pressure surface disk 70; the driving pulley disk 30 is connected with an output shaft 80 and is provided with a first belt acting disk surface 31 which is inclined outwards; the shaft sleeve 40 is assembled on the output shaft 80; the movable pulley plate 50 is sleeved on the shaft sleeve 40 by a sleeve shaft part 51, allows axial displacement along the shaft sleeve 40, has one end forming an outward inclined second belt acting plate surface 52 opposite to the first belt acting plate surface 31 of the transmission pulley plate 30, and has the other end forming a plate chamber 54 by arranging a plate frame 53 at the periphery of the sleeve shaft part 51, the plate chamber 54 is formed by radially forming a plurality of pairs of limiting wall sheets 55 towards the plate frame 53 by taking the sleeve shaft part 51 as the center, a gap 56 is arranged between each pair of limiting wall sheets 55 and the plate frame 53, and a containing chamber 57 is arranged in each other, the bottom of the containing chamber 57 is provided with an inclined push surface 58 from deep to shallow between the sleeve shaft part 51 and the plate frame 53; a plurality of roller blades 60 mounted in the storage chambers 57 of the movable roller plate 50; the back pressure face plate 70 has a bamboo hat shaped complete plate body 71, the plate body 71 has a complete inner pressing conical surface 72 inside, the upper end of the outside is provided with a group of connection holes 73, the group of connection holes 73 are sleeved on the output shaft 80, and matched with the limitation or stop of the shaft sleeve 40, the axial displacement motion of the output shaft 80 is not allowed, the periphery of the plate body 71 is embedded into the plate chamber 54 of the movable pulley plate 50 and spans the gap 56 without being blocked, and the inner pressing conical surface 72 forms a pressing catch on one surface of the pulley ball 60; as shown in fig. 12, 13 and 14, when the output shaft 80 drives the pulley disk 30 to cause the pulley bead 60 to displace along the inclined pushing surface 58 at the bottom of the receiving chamber 57 of the movable pulley disk 50, the pulley bead 60 limited by the axial displacement of the complete inner pressing conical surface 72 of the back pressure surface disk 70 pushes the movable pulley disk 50 toward the transmission pulley disk 52, so that the distance between the second belt acting disk surface 52 of the movable pulley disk 50 and the first belt acting disk surface 31 of the transmission pulley disk 30 is reduced, the transmission position of the triangular transmission belt 90 between the first belt acting disk surface 31 and the second belt acting disk surface 52 is changed, and the automatic and stepless speed change of the transmission speed ratio is generated; the overall structure, as shown in fig. 10, 11, 13 and 14, the back pressure surface plate 70 does not directly interfere with the movable pulley plate 50 due to the back and forth axial displacement movement of the movable pulley plate 50 on the shaft sleeve 40 generated by the rotation speed of the transmission pulley plate 30, so that the transmission positions of the triangular transmission belt 90 on the first and second belt

action plate surfaces

31 and 52 are changed, the effect of flexible axial movement of the movable pulley plate 50 on the shaft sleeve 40 is achieved, and the smoothness and speed of the speed change action in the stepless speed change process are effectively improved.

According to the above embodiment, in addition to the conventional round-shaped roller weight 60, the roller weight 60 can be a multi-side push-disk type roller weight 60A as shown in FIGS. 8, 9 and 10, (note: the multi-side push-disk type roller weight 60A can be referred to in the disclosure of the invention TWI308122 "push-disk hammer of automatic transmission device" in the former Taiwan of the present applicant or the disclosure of the "anti-rolling structure of automatic transmission" in the New TWM425094 "in the Chinese Taiwan), when the inner push conical surface 72 of the back surface disk 70 presses a slanted rest surface 61A of the multi-side push-disk type roller weight 60A, as shown in FIGS. 16 and 17, when the output shaft 80 drives the roller disk 30 to cause the sliding arc surface 62A of the multi-side push-disk type roller weight 60A to displace along the slanted push surface 58 at the bottom of the receiving chamber 57 of the movable roller disk 50, the roller weight 60A is pressed by the inner push-disk 72 defined by the complete axial displacement of the back surface disk 70 The function of the forced pushing of the direction of the movable pulley disc 52 can utilize the distance between the second belt acting disc surface 52 of the movable pulley disc 50 and the first belt acting disc surface 31 of the transmission pulley disc 30 to reduce and change, and generate the automatic and stepless speed change of the transmission speed ratio; similarly, the back pressure face plate 70 does not directly interfere with the movable pulley plate 50 in any movement, so as to achieve the effect of flexible axial movement of the movable pulley plate 50 on the shaft sleeve 40; through a speed change speed test performed on a locomotive, the data of the test result shows that the time required by the pulley disc set to accelerate from 30 km/h to 90 km/h is about 4 seconds faster than the acceleration of the traditional pulley disc set, so that the pulley disc set can effectively improve the speed change smoothness and the reaction speed of the stepless transmission in the speed change process; even more, the pulley disk assembly of the present invention has the benefits of fuel economy and reduced wear of the pulley beads.

The foregoing description is intended to illustrate rather than limit the invention, and those skilled in the art will appreciate that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A pulley disk set of a high-speed stepless transmission is a pulley disk set, and is characterized in that: comprises a transmission pulley disk, a shaft sleeve, a movable pulley disk, a plurality of pulley beads and a back pressure surface disk;

the shaft sleeve is assembled on the output shaft;

2. The high-rate continuously variable transmission pulley disc set according to claim 1, wherein the pulley bead is a circular pulley bead.

3. The high rate continuously variable transmission pulley disc package of claim 1, wherein the pulley bead is a multilateral pushplate hammer pulley bead.