CN212584206U

CN212584206U - Stepless speed variator

Info

Publication number: CN212584206U
Application number: CN202021156368.4U
Authority: CN
Inventors: 李哲南
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-02-23
Anticipated expiration: 2030-06-19

Abstract

The utility model discloses a continuously variable transmission, which relates to the technical field of continuously variable transmission, in particular to a continuously variable transmission driven by a friction wheel and a round wheel; comprises a box body, a guide shaft component, a central shaft, a driving wheel component, a driven wheel component, a friction wheel component and a transverse bridge component. The guide shaft assembly is arranged in the box body, two ends of the guide shaft assembly extend out of the box body and are connected with the central shaft through the transverse bridge assembly to transmit power to the central shaft, so that the driving wheel assembly and the driven wheel assembly are pushed to slide axially along the central shaft; the driving wheel assembly is arranged on the central shaft through the screw rod assembly, the driving wheel assembly and the screw rod assembly are connected through an elastic element, meanwhile, the driven wheel assembly is also arranged on the central shaft, the driving wheel assembly and the driven wheel assembly are contained in the box body, and the driving wheel assembly transmits rotary motion to the driven wheel assembly through the friction wheel assembly; the beneficial effect of this patent is that transmission efficiency is high, the transmission is steady.

Description

Stepless speed variator

Technical Field

The utility model relates to a infinitely variable technical field especially relates to an utilize driven buncher of friction pulley and round wheel.

Background

At present, the existing stepless speed change technology mainly has various structures such as a V-shaped rubber belt type, a metal belt type, a multi-disc type, a steel ball type, a roller rotating disc type and the like, and power is transmitted by utilizing a metal belt and a roller with a variable radius. The change of the gear ratio is achieved through the change of the radiuses of the driving roller and the driven roller. In order to effectively transmit power, the steel belt and the roller are not allowed to slip, and the originally generated heat energy is much, so that if the steel belt slips again, internal parts are possibly burnt or seriously worn. In order to increase the static friction, the most direct way is to increase the pressure between the steel strip and the roller. But the friction increases and the losses of power transmission also increase. Therefore, the existing continuously variable transmission has the problems of low efficiency and large impact.

In view of the above, it is necessary to provide a continuously variable transmission using friction wheel and circular wheel transmission, which can solve the aforementioned technical drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model provides a continuously variable transmission, transmission efficiency is low when having solved transmission power, strikes big problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a continuously variable transmission, include box, guide shaft subassembly, center pin, driving wheel subassembly, follow driving wheel subassembly, friction pulley subassembly and horizontal bridge subassembly. The guide shaft assembly is arranged in the box body, two ends of the guide shaft assembly extend out of the box body and are connected with the central shaft through the transverse bridge assembly to transmit power to the central shaft, so that the driving wheel assembly and the driven wheel assembly are pushed to slide axially along the central shaft; the driving wheel assembly is arranged on the central shaft through the screw rod assembly, the driving wheel assembly and the screw rod assembly are connected through an elastic element, meanwhile, the driven wheel assembly is also arranged on the central shaft, the driving wheel assembly and the driven wheel assembly are contained in the box body, and the driving wheel assembly transmits rotary motion to the driven wheel assembly through the friction wheel assembly.

The guide shaft assembly comprises a guide shaft push rod, two guide shafts, two guide sleeves, three guide shaft pipe clamps, three transverse bridges, three fixing rings, three positioning screws and six pipe clamps; the guide shaft push rod is connected with two guide shafts, and two guide sleeves are respectively arranged on the two guide shafts; the first transverse bridge is fixed on the two guide shafts through two pipe clamps; the second transverse bridge and the third transverse bridge are fixed on the two guide sleeves through four pipe clamps; meanwhile, the first transverse bridge is positioned on the screw rod assembly through the first fixing ring and the first positioning screw; the transverse bridge II is positioned on the driving wheel assembly through a second fixing ring and a second positioning screw; and the transverse bridge tee joint passes through the third fixing ring and the third positioning screw and is positioned on the driven wheel assembly.

The driving wheel assembly comprises a first wheel assembly and a screw rod sleeve; the first wheel assembly is fixed on the outer surface of the screw rod sleeve, and threads are arranged on the inner surface of the screw rod sleeve; the assembly is connected with the screw rod assembly through threads.

The driven wheel assembly comprises a second wheel assembly and a central shaft sleeve; the central shaft sleeve is arranged on the central shaft and is in clearance fit with the central shaft; the second wheel assembly is fixed on the central shaft sleeve.

The first wheel assembly and the second wheel assembly are identical in structure. The omnidirectional wheel can be a main wheel and a small wheel, and n small wheels capable of freely rotating are uniformly distributed at the outer rim of the first wheel or the second wheel. Or the external circle of the smooth wheel without concave-convex lines. Meanwhile, the wheel can also be a round wheel with concave-convex lines on the excircle or an excircle coating which is not limited by the process.

The friction wheel assembly comprises two main friction wheel assemblies, two locking shafts, n gaskets, two nuts and two locking nuts; the two main friction wheel assemblies are respectively welded on the two locking shafts, the two locking shafts respectively penetrate through shaft holes of the upper box body and the lower box body, gaskets, nuts and locking nuts are arranged on the upper side and the lower side of the box body, and the positions of the two main friction wheel assemblies can be adjusted through the gaskets.

The main friction wheel assembly comprises a metal wheel and a non-metal wheel; one side welded with the locking shaft is provided with a metal wheel, and the other side in contact with the omnidirectional wheel assembly is provided with a non-metal wheel; the metal wheel can guarantee the intensity, and the non-metal wheel plays the effect of increase friction power when transmission power to improve transmission efficiency.

The screw rod assembly comprises a screw rod, a fixing plate and an elastic element; the screw rod is connected with the central shaft through a spline, the tail of the screw rod is welded with a fixing plate, an elastic element is mounted on the fixing plate and connected with the driving omnidirectional wheel, power is transmitted from the central shaft and transmitted to the driving omnidirectional wheel through the elastic element, and when torque force is suddenly increased, an effective buffering effect is achieved.

Compared with the prior art, the utility model discloses a box, guiding axle subassembly, center pin, driving wheel subassembly, follow driving wheel subassembly, friction pulley subassembly and horizontal bridge subassembly. The guide shaft assembly is arranged in the box body, two ends of the guide shaft assembly extend out of the box body and are connected with the central shaft through the transverse bridge assembly to transmit power to the central shaft, so that the driving wheel assembly and the driven wheel assembly are pushed, and the guide shaft assembly slides axially along the central shaft. The driving wheel assembly is arranged on the central shaft through the screw rod assembly, the driving wheel assembly and the screw rod assembly are connected through an elastic element, meanwhile, the driven wheel assembly is also arranged on the central shaft, the driving wheel assembly and the driven wheel assembly are contained in the box body, and the driving wheel assembly transmits rotary motion to the driven wheel assembly through the friction wheel assembly.

The utility model discloses the beneficial effect of the buncher that claims is:

the guide shaft assembly is arranged in the box body, two ends of the guide shaft assembly extend out of the box body and are connected with the central shaft through the transverse bridge assembly to transmit power to the central shaft, so that the driving wheel assembly and the driven wheel assembly are pushed to slide axially along the central shaft; the driving wheel assembly is arranged on the central shaft through the screw rod assembly, the driving wheel assembly is connected with the screw rod assembly through the elastic element, power is transmitted from the central shaft and transmitted to the driving wheel through the elastic element, and when the torque force is increased suddenly, an effective buffering effect is achieved, so that stable transmission is achieved.

Meanwhile, the driven wheel assembly is also arranged on the central shaft and is accommodated in the box body, and the driving wheel assembly transmits rotary motion to the driven wheel assembly through the friction wheel assembly; the main friction wheel assembly comprises a metal wheel and a non-metal wheel; the metal wheel is arranged on the side welded with the locking shaft, so that the strength can be effectively ensured; the non-metal wheel is in contact with the round wheel, and when the round wheel rotates to transmit power, friction force is increased, so that transmission efficiency is effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a cross-sectional view of a continuously variable transmission according to the present invention along a central axial direction;

FIG. 2 is a schematic cross-sectional view of the continuously variable transmission of FIG. 1 taken along direction A-A;

fig. 3 is a schematic structural view of the guide shaft assembly provided by the present invention.

Fig. 4 is a schematic structural view of the driving wheel assembly of the present invention.

Fig. 5 is a schematic structural view of the first wheel assembly according to the present invention.

Fig. 6 is a schematic structural view of the driven wheel assembly according to the present invention.

Fig. 7 is a schematic structural view of a second wheel assembly according to the present invention.

Fig. 8 is a schematic structural view of the friction wheel assembly provided by the present invention.

Fig. 9 is a schematic structural view of the main friction wheel assembly provided by the present invention.

Fig. 10 is a schematic structural view of the screw rod assembly according to the present invention.

In the figure: 100 boxes, 200 guide shaft assemblies, 300 central shafts, 400 driving wheel assemblies, 500 driven wheel assemblies, 600 friction wheel assemblies, 700 lead screw assemblies, 201 guide shaft push rods, 202 fixing rings I, 203 positioning screws, 204 transverse bridges I, 205 transverse bridges II, 206 positioning screws II, 207 fixing rings II, 208 transverse bridges III, 209 fixing rings III, 210 positioning screws III, 211 pipe clamp III, 212 guide sleeve I, 213 guide sleeve II, 214 pipe clamp II, 215 pipe clamp I, 216 guide shaft II, 217 guide shaft I, 401 first wheel assemblies, 402 lead screw sleeves, 40101 first main wheels, 40102 small wheels, 501 second wheel assemblies, 502 central shaft sleeves, 50101 second main wheels, 50102 small wheels, 601 main friction wheel assemblies, 602 locking shafts, 603 locking nuts, 604 nuts, 605 gaskets, 60101 metal wheels, 60102 nonmetal wheels 701, lead screws, 702 elastic elements and 703 fixing plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step based on the embodiments described in the present application are within the scope of the protection of the present application.

Referring to fig. 1 to 10, a continuously variable transmission includes a case 100, a guide shaft assembly 200, a central shaft 300, a driving wheel assembly 400, a driven wheel assembly 500, a friction wheel assembly 600, and a lead screw assembly 700; the guide shaft assembly 200 is installed in the housing 100, and both ends of the guide shaft assembly extend out of the housing 100, and are connected to the central shaft 300 through the

transverse bridge assemblies

204, 205, and 208, so as to transmit power to the central shaft 300, thereby pushing the driving wheel assembly 400 and the driven wheel assembly 500 to axially slide along the central shaft 300. The driving wheel assembly 400 is mounted on the central shaft 300 through the lead screw assembly 700, the driving wheel assembly 400 and the lead screw assembly 700 are connected by the elastic element 702, meanwhile, the driven wheel assembly 500 is also mounted on the central shaft 300, they are both accommodated in the box body 100, and the driving wheel assembly 400 transmits the rotation motion to the driven wheel assembly 500 through the friction wheel assembly 600.

On the guide shaft assembly 200, a guide shaft push rod 201 is connected with a first guide shaft 217 and a second guide shaft 216, and a first guide sleeve 212 and a second guide sleeve 213 are respectively arranged on the two guide shafts; the second transverse bridge 205 and the third transverse bridge 208 are fixed on the first guide sleeve 212 and the second guide sleeve 213 through the second pipe clamp 214 and the third pipe clamp 211; the first transverse bridge 204 is fixed on a first guide shaft 217 and a second guide shaft 216 through a first pipe clamp 215; meanwhile, the first transverse bridge 204 is axially positioned on the screw rod assembly 700 through the first fixing ring 202 and the first positioning screw 203; the second transverse bridge 205 is axially positioned on the driving wheel assembly 400 through a second fixing ring 207 and a second positioning screw 206; cross bridge three 208 is axially positioned on driven wheel assembly 500 by retaining ring three 209 and set screw three 210.

The driving wheel assembly 400 comprises a first wheel assembly 401 and a screw rod sleeve 402; the first wheel assembly 401 is fixed on the screw rod sleeve 402, and the inner surface of the screw rod sleeve 402 is provided with threads; the lead screw sleeve 402 is threadedly connected to the lead screw assembly 700.

A driven wheel assembly 500 comprising a second wheel assembly 501, a central hub 502; the central shaft sleeve 502 is arranged on the central shaft 300, and the central shaft sleeve 502 is in clearance fit with the central shaft 300; the second wheel assembly 501 is fixed to a central hub 502.

The first wheel assembly and the second wheel assembly are identical in structure. The omnidirectional wheel can be a main wheel and a small wheel, and n small wheels capable of freely rotating are uniformly distributed at the outer rim of the first wheel or the second wheel. Or the external circle of the smooth wheel without concave-convex lines. Meanwhile, the wheel can also be a round wheel with concave-convex lines on the excircle or an excircle coating which is not limited by the process. The structure of the omni wheel is described herein in greater detail.

A first wheel assembly 401 comprising a first main wheel 40101, a small wheel 40102; n freely rotatable small wheels 40102 are evenly distributed at the outer rim of the first main wheel 40101. By adopting the structure, when the first wheel assembly 401 slides along the axial direction, the small wheel 40102 performs rolling motion, so that the friction force is effectively reduced, and the abrasion is effectively reduced.

A second wheel assembly 501 comprising a second main wheel 50101 and a small wheel 40102; n freely rotatable small wheels 50102 are evenly distributed at the outer edge of the second main wheel 50101. By adopting the structure, when the second wheel assembly 501 slides along the axial direction, the small wheel 50102 performs rolling motion, so that the friction force is effectively reduced, and the abrasion is effectively reduced.

The friction wheel assembly 600 comprises two main friction wheel assemblies 601, two locking shafts 602, n gaskets 605, two nuts 604 and two locking nuts 603; the two main friction wheel assemblies 6 602 are respectively welded on the two locking shafts 602, the two locking shafts 602 respectively penetrate through the shaft holes on the upper side and the lower side of the box body 100, the gasket 605, the nut 604 and the locking nut 603 are arranged on the upper side and the lower side of the box body 100, and the position of the two main friction wheel assemblies 601 is adjusted through the gasket 605.

A main friction wheel assembly 601 comprising a metal wheel 60101 and a non-metal wheel 60102; a metal wheel 60101 is arranged on one side welded with the locking shaft 602, and a non-metal wheel 60102 is arranged in the direction contacting with the omnidirectional wheel assembly 401; the metal wheel 60101 can ensure strength, and the non-metal wheel 60102 plays a role in increasing friction force when transmitting power, so that transmission efficiency is improved.

The screw rod assembly 700 comprises a screw rod 701, a fixing plate 703 and an elastic element 702; the lead screw 701 passes through splined connection with center pin 300, and the welding of lead screw 701 afterbody has fixed plate 703, is equipped with elastic element 702 on the fixed plate 703, and elastic element 702 is connected with initiative omniwheel 40101, and power is passed over by center pin 300, transmits to initiative omniwheel 40101 via elastic element 702, when the torsion increases suddenly, plays effectual cushioning effect to realize steady transmission.

In this embodiment, when the central shaft 300 rotates, the lead screw assembly 700 is driven to rotate, the elastic element 702 on the lead screw assembly 700 is connected with the driving omni-wheel assembly 400, so as to drive the driving omni-wheel 400 to rotate, the driving omni-wheel 400 drives the friction wheel assemblies 600 pressed at the upper and lower ends of the driving omni-wheel assembly to rotate, and the friction wheel assemblies 600 drive the driven omni-wheel assembly 500 to rotate, thereby realizing power transmission; simultaneously, the guide shaft assembly 200 is pushed, and the positions of the driving omni-directional wheel assembly 400 and the driven omni-directional wheel assembly 500 on the friction wheel assembly 600 are changed through the first transverse bridge 204, the second transverse bridge 205 and the third transverse bridge 208 which are positioned on the central shaft 300, so that the speed change is realized. The axial movement and the rotary movement are synchronously carried out, and the stepless speed change movement in the advancing process is realized.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. A continuously variable transmission is characterized by comprising a box body, a guide shaft assembly, a central shaft, a driving wheel assembly, a driven wheel assembly, a friction wheel assembly and a transverse bridge assembly, wherein the guide shaft assembly is arranged in the box body, two ends of the guide shaft assembly extend out of the box body and are connected with the central shaft through the transverse bridge assembly and used for transmitting power to the central shaft so as to push the driving wheel assembly and the driven wheel assembly to axially slide along the central shaft; the driving wheel assembly and the driven wheel assembly are arranged on the central shaft and are accommodated in the box body together; wherein the drive wheel assembly and the driven wheel assembly are each in surface contact with the friction wheel assembly such that the drive wheel assembly transmits rotational motion to the driven wheel assembly via the friction wheel assembly.

2. The variable transmission of claim 1, wherein a guide shaft push rod is connected to a first guide shaft and a second guide shaft on the guide shaft assembly, and a first guide sleeve and a second guide sleeve are respectively mounted on the two guide shafts; the transverse bridge II and the transverse bridge III are fixed on the guide sleeve I and the guide sleeve II through the pipe clamp II and the pipe clamp III; the first transverse bridge is fixed on the first guide shaft and the second guide shaft through the first pipe clamp; meanwhile, the first transverse bridge is axially positioned on the screw rod assembly through the first fixing ring and the first positioning screw; the transverse bridge II is axially positioned on the driving omnidirectional wheel assembly through a second fixing ring and a second positioning screw; the transverse bridge tee joint passes through the third fixing ring and the third positioning screw and is axially positioned on the driven omnidirectional wheel assembly; so as to push the driving wheel component and the driven wheel component on the central shaft to slide along the axial direction.

3. The variable transmission of claim 2, wherein the lead screw assembly comprises a lead screw, a fixed plate, and an elastic member; the lead screw passes through the splined connection with the center pin, and the welding of lead screw afterbody has the fixed plate, is equipped with elastic element on the fixed plate, and elastic element is connected with the action wheel subassembly, and power is passed over by the center pin, transmits for the action wheel subassembly via elastic element.

4. The variable transmission of claim 1, wherein the driving wheel assembly comprises a first wheel assembly and a lead screw sleeve, the first wheel assembly is fixed on the lead screw sleeve and transmits power to the friction wheel assembly, the inner surface of the lead screw sleeve is provided with threads, and the lead screw sleeve is connected with the lead screw assembly through the threads.

5. The variable transmission of claim 4, wherein the driven wheel assembly comprises a second wheel assembly and a center hub; the central shaft sleeve is arranged on the central shaft, and the central shaft sleeve is in clearance fit with the central shaft; the second wheel assembly is fixed on the central shaft sleeve, and the driving wheel assembly transmits power to the second wheel assembly through the friction wheel assembly.

6. The variable transmission of claim 5, wherein the first wheel assembly and the second wheel assembly are identical in structure and are omni wheels including a main wheel and a small wheel, and n freely rotatable small wheels are evenly distributed at an outer rim of the first main wheel or the second main wheel.

7. The continuously variable transmission of claim 1, wherein the friction wheel assembly comprises two main friction wheel assemblies, two locking shafts, n spacers, two nuts and two locking nuts, the two main friction wheel assemblies are respectively welded on the two locking shafts, the two locking shafts respectively pass through shaft holes on the upper side and the lower side of the case body, the spacers, the nuts and the locking nuts are arranged on the upper side and the lower side of the case body, and the positions of the two main friction wheel assemblies are adjusted by the spacers.

8. The variable transmission of claim 7, wherein the main friction wheel assembly is comprised of a metallic wheel and a non-metallic wheel secured together; one side welded with the locking shaft is a metal wheel, and the direction of contact with the round wheel assembly is a non-metal wheel.

9. The variable transmission of claim 6, wherein the small wheel is a smooth wheel having an outer circle without a concave-convex pattern.

10. The variable transmission of claim 6, wherein the small wheel is a circular wheel having a cylindrical relief or a cylindrical coating that is process independent.