CN108691987B - High speed stepless transmission pulley disc set - Google Patents

Abstract

The present invention provides a high-speed stepless transmission pullet group. When the output shaft drives the pullet and causes the pullet bead to move along the inclined push surface at the bottom of the storage chamber, the pullet bead axially limited by the complete pressure inner cone surface of the back pressure surface plate pushes the movable pullet in the direction of the transmission pullet. The distance between the second belt action disk surface of the movable pullet and the first belt action disk surface of the transmission pullet is reduced and changed, so that the transmission position of the triangular transmission belt between the first belt action disk surface and the second belt action disk surface changes. The overall structure causes the movable pullet to make a back-and-forth axial displacement movement on the shaft sleeve in response to the speed of the transmission pullet. Since the back pressure surface plate does not directly interfere with the movable pullet, the transmission position of the triangular transmission belt on the first and second belt action disk surfaces is changed, so as to achieve the effect of flexible axial movement of the movable pullet on the shaft sleeve, and effectively improve the smoothness and speed of the speed change in the stepless speed change process.

Description

High-speed continuously variable transmission Pulley disc group

technical field

The invention relates to a high-speed stepless transmission pulley plate group which can increase the flexibility of a movable pulley plate on a shaft sleeve, and achieve smooth speed change action and speed improvement effect during the stepless speed change process.

Background technique

Press, the automatic transmission or stepless transmission used in vehicles (such as locomotives), such as the description of the prior art in the new patent case of Taiwan No. M275157 "Pusher Hammer Improvement of Automatic Transmission Transmission", is a movable transmission surface. The disc is provided with a plurality of hammer chambers, and each hammer chamber is equipped with a push-disc hammer, and each push-disc hammer is subject to the limitation of an abutting plate, so that after the movable transmission face plate is started, it can be driven by the push-disc hammer. The centrifugal outward displacement action of the hammer pushes the movable transmission face plate toward the direction of the transmission face plate along the central axis, and the distance between the movable transmission face plate and the transmission face plate is reduced and changed, so that between the movable transmission face plate The V-shaped transmission belt between the disc and the transmission face plate can change the transmission position with the speed of the movable transmission face plate to achieve the effect of automatic transmission.

That is to say, in order to achieve the purpose of stepless automatic transmission, the above-mentioned existing automatic transmission or stepless transmission, as shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, is a center of a movable transmission face plate 1 radially formed with a plurality of The hammer chambers 11 of the inner oblique pressing push surface 110 are respectively accommodated in each hammer chamber 11 with a push plate hammer 3 , and each push plate hammer 3 is subject to an abutment on the inner oblique pressure push surface 110 . An inclined surface body portion 20 of the disc 2 is defined, as shown in Figures 5 and 6, so that after the movable transmission surface disc 1 is driven and started by the central shaft 6, the movable transmission surface can be moved by the centrifugal outward displacement action of the push disc hammer 3. The disk 1 is pushed along the central axis 6 in the direction of the transmission surface plate 5, and the distance between the movable transmission surface plate 1 and the transmission surface plate 5 is reduced and changed, so that the distance between the movable transmission surface plate 1 and the transmission surface plate 5 is reduced. The V-shaped transmission belt 4 can change the transmission position from the inside to the outside as the rotation speed of the movable transmission face plate 1 increases, so as to achieve the change of the transmission speed ratio of the V-shaped transmission belt 4 . Although the existing stepless transmission, as shown in Figures 3 and 6, can be moved by the centrifugal outward displacement of the push-disc hammer 3 to force the axial displacement of the movable transmission surface plate 1, resulting in a change in the distance between the transmission surface plate and the transmission surface plate 5 to achieve V The transmission position of the V-shaped transmission belt 4 changes, however, the movable transmission surface plate 1 is driven by the transmission surface plate 5 through the V-shaped transmission belt 4 on the central shaft 6 to rotate. The inclined surface disc body 20 (to keep the pressing track surface from being offset), as shown in Figure 1, Figure 2, Figure 4, has a plurality of guide posts 12 extending outward from the disc body between the mutual awl chambers 11, and , a plurality of recesses 200 are concavely formed on the inclined surface body portion 20 of the abutting plate 2, and on the recesses 200, a plurality of notch guide grooves 21 are formed relative to the guide post 12, and the guide post 12 is used to embed the notches In the guide groove 21, the axial displacement and rotation process of the movable transmission surface plate 1 is caused, and the abutting plate 2 rotates synchronously in conjunction with each other. Only, as shown in Figures 5 and 7, the rotating movable transmission surface plate 1 passes through the guide column. 12 Drive the abutment plate 2 in the notch guide groove 21 of the abutment plate 2, and the abutment plate 2 that cannot be axially displaced will inevitably cause the guide post 12 and the notch guide during the axial displacement of the movable transmission surface plate 1. Strong frictional resistance is formed between the grooves 21, which reduces the flexibility of the distance change between the movable transmission surface plate 1 and the transmission surface plate 5, and sometimes affects the smoothness of the V-shaped transmission belt 4 when the transmission position changes (automatic transmission) or affects the speed change. s speed.

SUMMARY OF THE INVENTION

The present invention provides a high-speed continuously variable transmission pulley plate group, which solves the above-mentioned technical problems existing in the prior art.

For achieving the above object, the technical scheme adopted in the present invention is:

A high-speed continuously variable transmission pulley plate group, which is a pulley plate group, is characterized in that it comprises a transmission pulley plate, a shaft sleeve, a movable pulley plate, a plurality of pulley beads and a back pressure face plate;

The transmission pulley disc is connected with an output shaft and has an externally inclined first belt action disc surface;

The shaft sleeve is assembled on the output shaft;

The movable pulley plate is sleeved on the shaft sleeve with a set of shaft parts, allowing axial displacement along the shaft sleeve, and one end of the movable pulley plate is formed with an externally inclined surface relative to the first belt action plate surface of the transmission pulley plate. The second belt acts on the disk surface, and the other end is provided with a disk frame on the periphery of the sleeve shaft portion to form a disk chamber, and the disk chamber takes the sleeve shaft portion as the center and forms a plurality of pairs of limiting wall pieces radiating toward the disk frame direction. There is a gap between each pair of limiting wall pieces and the disk frame, and each pair of limiting wall pieces has a storage chamber inside, and the bottom of the storage chamber has a deep-to-shallow oblique push from the sleeve shaft portion to the disk frame noodle;

the plurality of pulley beads are respectively installed in the storage chamber of the movable pulley plate;

The back pressure surface plate has a complete pan body in the shape of a bucket hat. The inside of the plate body has a pressure inner cone surface with a complete shape. The outer upper end of the plate body is provided with a set of connecting holes, and the set of connecting holes is sleeved on the output shaft. and is limited by the bushing to not be displaced in the axial direction of the output shaft, the peripheral edge of the disk body is embedded in the disk chamber of the movable pulley disk and straddles the gap, and is pressed against the inner cone by the forming a catch against the pulley bead;

When the output shaft drives the pulley disc and causes the pulley bead to move along the inclined push surface of the bottom of the storage chamber of the movable pulley disc, the pulley bead, which is limited by the complete pressure inner cone of the back pressure face plate, will move The movable pulley plate is forced to push in the direction of the transmission pulley plate, and the distance between the second belt action plate surface of the movable pulley plate and the first belt action plate surface of the transmission pulley plate is reduced and changed, so that the distance between the first belt action plate surface and the first belt action plate surface of the transmission pulley plate is reduced and changed. The V-belt between the belt action disc and the second belt action disc changes the transmission position.

Wherein, the pulley beads are circular pulley beads.

Wherein, the pulley bead is a multi-sided push-disk hammer-type pulley bead.

Compared with the prior art, the present invention has the beneficial effects of: the overall structure, the movable pulley plate generated by the speed of the transmission pulley plate rotates back and forth axially on the shaft sleeve, The movable pulley plate does not directly interfere with any movement, so that the transmission position of the V-belt on the first and second belt action disks changes, so as to achieve the effect of flexible axial movement of the movable pulley plate on the shaft sleeve, effectively improving the The smoothness and speed of the shifting action during the stepless shifting process.

Description of drawings

Fig. 1 is an exploded perspective view of the structure of the face plate group of the existing stepless transmission;

Fig. 2 is the plan view of the structure combination of the existing stepless transmission face plate group;

Fig. 3 is the AA cross-sectional structure diagram of Fig. 2;

Fig. 4 is the BB sectional structure diagram of Fig. 2;

5 is a schematic plan view of the existing stepless speed changer face plate group when the push-disc cone is centrifugally displaced;

Fig. 6 is the CC sectional structure diagram of Fig. 5;

Fig. 7 is the DD cross-sectional structure diagram of Fig. 5;

8 is an exploded perspective view of the structure of the Pulley disc set of the present invention;

Figure 9 is a plan view of the Pulley disc group structure combination of the present invention;

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

Fig. 11 is the FF cross-sectional structural view of Fig. 9;

Fig. 12 is the schematic plan view of the present invention when the pulley disc group pulley bead is centrifugally displaced;

FIG. 13 is a cross-sectional structural view taken along the line GG of FIG. 12;

Fig. 14 is the H-H sectional structure diagram of Fig. 12;

15 is an exploded perspective view of the structure of another embodiment of the Pulley disc set of the present invention;

16 is a cross-sectional structural view of another embodiment of the Pulley disc assembly of the present invention;

17 is a schematic cross-sectional structural diagram of another embodiment of the pulley disc assembly of the present invention when pulley beads are centrifugally displaced.

Description of reference numerals: movable transmission face plate 1; awl chamber 11; inner oblique pressing push surface 110; guide post 12; ; V-shaped drive belt 4; drive face plate 5; central shaft 6; drive pulley plate 30; first belt action disk surface 31; 52; Disk frame 53; Disk chamber 54; Delimited wall piece 55; Notch 56; Storage chamber 57; Inclined push surface 58; Pulley bead 60; Surface 62A; back pressure surface plate 70; plate body 71;

Detailed ways

In order to achieve the above-mentioned purpose, the present invention specifically cites preferred embodiments, and cooperates with the accompanying drawings, and is described in detail as follows:

A high-speed continuously variable transmission pulley disc set, as shown in Figure 8, Figure 9, Figure 10, Figure 11, is a pulley disc set, including a transmission pulley disc 30, a bushing 40, a movable pulley The disk 50, a plurality of pulley beads 60 and a back pressure surface disk 70; the transmission pulley disk 30, connected with an output shaft 80, has an externally inclined first belt action disk surface 31; the shaft sleeve 40 is assembled On the output shaft 80; the movable pulley plate 50 is sleeved on the shaft sleeve 40 with a set of shaft parts 51, allowing axial displacement along the shaft sleeve 40, and one end of the movable pulley plate is opposite to the transmission pulley plate The first belt action disc surface 31 of the 30 is formed with an externally inclined second belt action disc surface 52, and at the other end, a disc frame 53 is provided on the periphery of the sleeve shaft portion 51 to form a disc chamber 54, the disc chamber 54, With the sleeve shaft portion 51 as the center, a plurality of pairs of limiting wall pieces 55 are radially formed toward the disk frame 53, and a gap 56 is provided between each pair of limiting wall pieces 55 and the disk frame 53, and there is a gap 56 inside each other. The storage chamber 57, the bottom of the storage chamber 57, from the sleeve shaft portion 51 to the disk frame 53, has an inclined push surface 58 from deep to shallow; the plurality of pulley beads 60 are respectively installed in the movable In the storage chamber 57 of the Pulley plate 50; the back pressure surface plate 70 has a complete plate body 71 in the shape of a bucket hat, and the plate body 71 has a complete shape of the pressure inner cone surface 72, and the outer upper end is provided with a set of connecting holes 73. The assembly hole 73 is sleeved on the output shaft 80, and cooperates with the limitation or stop of the shaft sleeve 40, and cannot move in the axial direction of the output shaft 80, and the peripheral edge of the disk body 71 is embedded in the output shaft 80. The disk chamber 54 of the movable pulley plate 50 is placed on the gap 56 without being blocked, and a pressure stop is formed on a surface of the pulley bead 60 by the pressing inner cone surface 72; as shown in FIGS. 12 and 13 . 14. When the output shaft 80 drives the pulley plate 30 to cause the pulley beads 60 to move along the inclined push surface 58 at the bottom of the storage chamber 57 of the movable pulley plate 50, it is subject to the complete pressure of the back pressure surface plate 70. The pulley ball 60 limited by the axial displacement of the tapered surface 72 pushes the movable pulley plate 50 in the direction of the transmission pulley plate 52, that is, the second belt of the movable pulley plate 50 can be used to act on the disk surface 52 and the transmission pulley. The distance between the first belt action disc surfaces 31 of the disc 30 is reduced and changed, so that the V-belt 90 between the first belt action disc surface 31 and the second belt action disc surface 52 changes the transmission position, resulting in an automatic and no transmission speed ratio. The overall structure is shown in Figure 10, Figure 11, Figure 13, Figure 14. The movable pulley plate 50 generated by the speed of the transmission pulley plate 30 makes a back and forth axial displacement movement on the shaft sleeve 40. The pressure surface plate 70 does not directly interfere with the movement of the movable pulley plate 50, so that the transmission position of the V-belt 90 on the first and second belt action plate surfaces 31 and 52 is changed, so that the movable pulley plate 50 can be moved on the shaft. The effect of flexible axial movement on the sleeve 40 effectively improves the smoothness and speed of the shifting action during the stepless shifting process.

According to the above embodiment, as shown in Fig. 8, Fig. 9, Fig. 10, the pulley bead 60, in addition to the traditional circular pulley bead 60, can also be used as shown in Fig. 15, Fig. 16. Pulley bead 60A, (Note: Multi-sided push-disc hammer-type pulley bead, please refer to the content of the applicant's former Taiwanese invention No. Anti-rolling push-disc hammer structure" case), the push-cone surface 72 of the back face plate 70 is used to form a pressure stop on an inclined resting surface 61A of the polygonal push-disc hammer-type Pulley ball 60A, as shown in Figure 16 17, when the output shaft 80 drives the pulley plate 30 to cause the sliding arc surface 62A of the polygonal push plate hammer pulley bead 60A to move along the oblique push surface 58 at the bottom of the storage chamber 57 of the movable pulley plate 50, it is restricted. The multi-sided push-disc hammer-type pulley ball 60A limited by the axial displacement of the complete pressing inner conical surface 72 of the back pressure surface plate 70 pushes the movable pulley plate 50 toward the transmission pulley plate 52, which can be used. The distance between the second belt action disk surface 52 of the movable pulley plate 50 and the first belt action plate surface 31 of the transmission pulley plate 30 is reduced and changed, resulting in automatic and stepless speed change of the transmission speed ratio; The face plate 70 does not directly interfere with the movement of the movable pulley plate 50, 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 test on a locomotive, The data from the test results show that the time required for the pulley disc group of the present invention to accelerate from 30 kilometers per hour to 90 kilometers per hour is about 4 seconds faster than the acceleration of the traditional pulley disk group. The pulley plate group can effectively improve the smoothness of the shifting action and the response rate of the stepless transmission during the shifting process; even, the pulley plate group of the present invention also has the benefits of saving fuel and reducing the wear of pulley beads.

The above description is only illustrative rather than restrictive to the present invention, and those of ordinary skill in the art will understand that many modifications, changes or the like can be made without departing from the spirit and scope defined by the accompanying description. effect, but will fall within the protection scope of the present invention.

Claims (3)

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 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.

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.

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