CN100424383C

CN100424383C - Double steel loop group antisymmetric metal strips type fully-adjustable speed drive

Info

Publication number: CN100424383C
Application number: CNB2006100473369A
Authority: CN
Inventors: 程乃士
Original assignee: Individual
Current assignee: DEZHOU GEAR Co Ltd
Priority date: 2006-07-28
Filing date: 2006-07-28
Publication date: 2008-10-08
Anticipated expiration: 2026-07-28
Also published as: CN101113778A

Abstract

The invention relates to a double-steel-ring asymmetric metal belt non-polar speeding transmission device, comprising an asymmetric metal belt, a drive shaft and a driven shaft. The drive shaft is provided with a drive flat disc fixed on a shaft and a drive moving tapered disc coaxially corresponding to the drive flat disc, a double-steel-ring asymmetric metal belt is clamped between the drive flat disc and the drive moving tapered disc and can slide working surface of a tapered disc. The driven shaft is provided with a driven flat disc fixed on the shaft and a driven moving tapered disc coaxially corresponding to the driven flat disc, a double-steel-ring asymmetric metal belt is clamped between the drive flat disc and the driving moving tapered disc and can slide on the working surface of the tapered disc. The working planes of the drive flat disc, the driven flat disc which contact the asymmetric metal belt are arranged in the same vertical plane. The invention does not generate axial directional movement and tilting relative to the asymmetric metal belt during the speeding process, and has a wide application scale.

Description

The asymmetric metal belt type stepless variable drive of two steel loop groups

Technical field

The present invention relates to the improvement technology of infinitely variable speed transmission, be specially a kind of pair of asymmetric metal belt type stepless variable drive of steel loop group.

Background technique

Stepless change transmission with middle flexible element successfully applies in the automobile variable speed transmission.In the medium-powered car speed change, mainly adopt metal tape as middle flexible element, shown in Fig. 1 (a)-(b).The active mantle dish 2 that the active that is fixed on the axle is decided awl dish 4 and can be in axial sliding is housed, initiatively mantle dish 2 and initiatively decide to clip between the awl dish 4 and can coil the metal tape assembly 3 that slides on the working surface on the driving shaft 1 at awl on axle.Equally, the driven driven mantle dish 6 of deciding awl dish 7 and can being in axial sliding that is fixed on the axle is housed on the driven shaft 5 on axle, drivenly decides to clip between awl dish 7 and the driven mantle dish 6 and can coil the metal tape assembly 3 that slides on the working surface at awl.Metal tape assembly 3 by one group of trough of belt each other the friction plate 8 of stack and be pressed in the groove of friction plate 8 both sides symmetries, and the steel loop group 9 that constitutes of some the thin steel bands that the friction plate of stack is connected in series constitute, its structure is referring to the Chinese utility model patent (patent No.: the 00212516.1) driving belt of friction plate metal band type transmitting assemblies.

Clamping force F is pressed to active mantle dish 2 and is initiatively decided awl dish 4, and metal tape assembly 3 is clamped.Equally, clamping force F is pressed to the driven awl dish 7 of deciding with driven mantle dish 6, and metal tape assembly 3 is clamped.Metal tape assembly 3 is passed to driven shaft 5 by the frictional force that two groups of awl dish clamping forces produce with the torque of driving shaft 1.

When active mantle dish 2 when (or to the right) is mobile left, driven mantle dish 6 simultaneously to the right (or left) move, metal tape assembly 3 moves at radially outward with the surface of contact of initiatively deciding awl dish 4 and active mantle dish 2, driven mantle dish 6 is pressed to the driven awl dish 7 of deciding, simultaneously, radially moving inward with driven mantle dish 6 and the driven surface of contact of deciding awl dish 7, the turning radius reduces, and realizes the stepless change transmission.

Shown in Fig. 2 (b), initiatively mantle dish 2, initiatively decide awl dish 4, driven mantle dish 6, driven when deciding awl dish 7 and being straight edge line awl dish, when bus in speed-change process metal tape assembly 3 except along the conical surface of deciding the awl dish moves radially, also moving axially, under the constant condition of belt length, as long as the radius of surface of contact mid point is unequal, the amount of moving radially is just unequal, under the situation of straight edge line awl dish, and metal tape assembly 3 just inevitable deflections.The active mantle dish 2 of Audi (Audi) company, initiatively decide awl dish 4, driven mantle dish 6, drivenly decide awl dish 7 and be sphere awl dish, sphere awl dish deflection is few, but does not solve root problem, sees Fig. 2 (a).

Summary of the invention

The object of the present invention is to provide a kind of pair of asymmetric metal belt type stepless variable drive of steel loop group, solve under the straight edge line condition deflection problem of metal tape in the speed-change process.

Technological scheme of the present invention is:

The asymmetric metal belt type stepless variable drive of two steel loop groups, comprise asymmetric metal tape, driving shaft and driven shaft, the active square position that is fixed on the axle and coaxial corresponding with the active square position is housed on the driving shaft, the active mantle dish that can on axle, be in axial sliding, initiatively clip and to coil the asymmetric metal tape of two steel loop groups that slides on the working surface at awl between square position and the active mantle dish, the driven square position that is fixed on the axle and coaxial corresponding with driven square position is housed on the driven shaft, the driven mantle dish that can be in axial sliding on axle clips between driven square position and the driven mantle dish and can coil the asymmetric metal tape of two steel loop groups that slides on the working surface at awl; Initiatively the square position is installed in same vertical plane with the working plane that driven square position contacts with asymmetric metal tape.

The described pair of asymmetric metal belt type stepless variable drive of steel loop group, the asymmetric metal tape of two steel loop groups is by asymmetrical friction sheet end-to-end, the asymmetrical friction sheet is a non-symmetry structure, its both sides trough of belt, and closely contact two steel loop groups that steel band that suit forms constitutes by multilayer and be plugged in the groove from both sides and combine, wherein a side is with initiatively square position and driven square position surface of contact are vertical plane.

Compared with prior art, the invention has the beneficial effects as follows:

1, the present invention adopts the active square position to be installed in same plane with driven square position with the working plane that two asymmetric metal tapes of steel loop group contact, two asymmetric metal tapes of steel loop group slide on this plane in speed-change process, therefore two asymmetric metal tapes of steel loop group can not produce and move axially, can not produce deflection, wide accommodation.

2, the asymmetric metal tape of two steel loop groups of the present invention's employing is by asymmetrical friction sheet end-to-end, this friction plate is a non-symmetry structure, the steel loop group that the thin steel band that is formed by multilayer " no gap " suit constitutes is plugged in the groove from both sides and combines, these bi-side and mantle dish initiatively and driven mantle dish and initiatively the square position contact with driven square position, can guarantee the carrying out smoothly of stepless change transmission of metal tape.

3. the asymmetric metal tape of two steel loop groups that adopts of the present invention is in speed-change process, the moment of flexure that causes owing to frictional force of balance better, and can improve bearing capacity.

Description of drawings

Fig. 1 (a)-(b) is a metal tape infinitely variable speed transmission schematic representation; Wherein, Fig. 1 (a) is a plan view, and Fig. 1 (b) is a metal tape assembly schematic representation among Fig. 1 (a).

Fig. 2 (a)-(b) is the deviation schematic representation of metal tape in the speed-change process; Wherein, Fig. 2 (a) is side-play amount and transmission ratio curve; Fig. 2 (b) is a working procedure deviation schematic representation.

Fig. 3 (a)-(c) is two asymmetric metal belt type stepless variable drive schematic representation of steel loop group; Wherein, Fig. 3 (a) is a plan view; Fig. 3 (b) is an asymmetric metal tape enlarged view among Fig. 3 (a); Fig. 3 (c) is a B-B sectional view among Fig. 3 (b).

Among the figure, 1. driving shaft; 2. mantle dish initiatively; 3. metal tape assembly; 4. initiatively decide the awl dish; 5. driven shaft; 6. driven mantle dish; 7. drivenly decide the awl dish; 8. friction plate; 9. steel loop group; 10. asymmetric metal tape; 11. active square position; 12. driven square position; 13. asymmetrical friction sheet; 14. steel loop group.

Embodiment

Shown in Fig. 3 (a)-(c), the present invention is two asymmetric metal belt type stepless variable transmissions of steel loop group, be fixed with on the driving shaft 1 initiatively square position 11 and can be on axle mantle dish 2 initiatively in axial sliding, initiatively square position 11 and initiatively clip two asymmetric metal tapes 10 of steel loop group between the mantle dish 2; Be fixed with on the driven shaft 5 driven square position 12 and can be on axle driven in axial sliding mantle dish 6, equally also clip two asymmetric metal tapes 10 of steel loop group between driven square position 12 and the driven mantle dish 6.

Difference from prior art is, asymmetric metal tape 10 is by asymmetrical friction sheet 13 end-to-ends, asymmetrical friction sheet 13 is a non-symmetry structure, steel loop group that the thin steel band that is formed by multilayer " no gap " (closely contact) suit constitutes 14 is plugged in the groove from both sides and combines, every layer of thin thickness of strips is about 0.2mm, and a side contacts with driven mantle dish 6 with active mantle dish 2; The opposite side of asymmetrical friction sheet 13 is vertical plane with the surface of contact of active square position 11 and driven square position 12.

Impacting force F can be that oil pressure also can be a mechanical spring pressure, impacting force F makes active mantle dish 2 and active square position 11, driven mantle dish 6 and driven square position 12 compress two asymmetric metal tapes 10 of steel loop group simultaneously, relies on frictional force that driven shaft 5 is passed in the motion and the torque of driving shaft 1.

When active mantle dish 2 is moved to the left, when driven mantle dish 6 moves right simultaneously, move outside the contact area of the asymmetric metal tape 10 of two steel loop groups and active mantle dish 2 and active square position 11, the turning radius increases, and move in the contact area of the asymmetric metal tape 10 of two steel loop groups and driven mantle dish 6 and driven square position 12, the turning radius reduces, and realizes the stepless change transmission.

Initiatively square position 11 is installed in same plane with driven square position 12 with the working plane that two asymmetric metal tapes 10 of steel loop group contact, two asymmetric metal tapes 10 of steel loop group slide on this plane in speed-change process, therefore two asymmetric metal tapes 10 of steel loop group can not produce and move axially, and can not produce deflection.

Among the present invention, the awl dish bus of the side molded lines of friction plate and active mantle dish or driven mantle dish is a straight edge line.

Claims

1. the asymmetric metal belt type stepless variable drive of two steel loop groups, it is characterized in that: comprise asymmetric metal tape, driving shaft and driven shaft, the active square position that is fixed on the axle and coaxial corresponding with the active square position is housed on the driving shaft, the active mantle dish that can on axle, be in axial sliding, initiatively clip and to coil the asymmetric metal tape of two steel loop groups that slides on the working surface at awl between square position and the active mantle dish, the driven square position that is fixed on the axle and coaxial corresponding with driven square position is housed on the driven shaft, the driven mantle dish that can be in axial sliding on axle clips between driven square position and the driven mantle dish and can coil the asymmetric metal tape of two steel loop groups that slides on the working surface at awl; Initiatively the square position is installed in same vertical plane with the working plane that driven square position contacts with asymmetric metal tape.

2. according to described pair of asymmetric metal belt type stepless variable drive of steel loop group of claim 1, it is characterized in that: the asymmetric metal tape of two steel loop groups is by asymmetrical friction sheet end-to-end, the asymmetrical friction sheet is a non-symmetry structure, its both sides trough of belt, and closely contact two steel loop groups that steel band that suit forms constitutes by multilayer and be plugged in the groove from both sides and combine, wherein a side is with initiatively square position and driven square position surface of contact are vertical plane.