CN209146250U - A kind of New type conical wheel type stepless variable speed mechanism - Google Patents

Abstract

The utility model provides a kind of New type conical wheel type stepless variable speed mechanism, including reverse interleaved and axis the first cone pulley disposed in parallel and the second cone pulley, first cone pulley and the second cone pulley do not contact, it further include being set in the surface of first cone pulley and the surface of the second cone pulley and a rotatable metal tape simultaneously, the metal tape outer surface is also symmetrically arranged with two contact rollers rotatable and adjustable in pitch, an annular spacing groove is along the circumferential direction offered per the contact roller, the metal tape is close to the annular spacing groove；The metal tape and two contact rollers realize synchronizing moving along the axial of the metal tape, by adjusting the spacing between two contact rollers, and then the adjustable pressure being applied on the metal tape, to realize after the metal tape is worn, original transmission efficiency can also be kept, while reducing maintenance cost.

Description

A kind of New type conical wheel type stepless variable speed mechanism

Technical field

The utility model relates to stepless transmission fields, especially a kind of New type conical wheel type stepless variable speed mechanism.

Background technique

Existing stepless transmission has metal band type or chain-type stepless transmission and KRG conical ring formula stepless transmission etc. Type, as shown in figure 5, existing KRG conical ring formula stepless transmission compresses 8 mode of becket using two taper cone pulleies 7 to generate It is driven the frictional force needed.And the shortcomings that this kind of drive is: KRG conical ring formula stepless transmission becket is when using one section Between after can wear, due to the distance between two taper cone pulleies 7 be it is fixed, the pressing force between two taper cone pulleies 7 can not be adjusted, After 8 fretting wear of becket, it is equivalent to two taper cone pulleies 7 and becomes smaller to the pressing force of becket 8, pressing force causes to pass after becoming smaller It passs torque to become smaller, eventually leads to transmission efficiency decline, or even job insecurity occur, so that can only all be weighed after wearing every time New replacement becket 8, increases maintenance cost, simultaneously because becket 8 is that one end stress carries out during carrying out variable speed Along the axial movement of becket 8, there are problems that force unbalance, causes abrasion uneven, further shorten the longevity of becket 8 Life.

Existing metal band type stepless speed variator transmission as shown in Figure 6 and Figure 7, existing chain-type as shown in Figure 8 and Figure 9 Stepless transmission is driven, and frictional force needed for the two is to lean on the left and right side edge and belt wheel of existing metal tape 9 or chain 10 oblique What the friction between face generated.The disadvantage is that: the passive belt wheel of metal band type or chain-type stepless transmission needs hydraulic system Accurate control, high to the technical requirements of hydraulic system, structure is complicated, increases cost.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of New type conical wheel type stepless variable speed mechanism, can adjust The spacing between contact roller, and then the adjustable pressure being applied on metal tape are saved, is worn to realize in metal tape Afterwards, original transmission efficiency can also be kept, while reducing maintenance cost, and the utility model structure is simple, it is at low cost.

The utility model is realized in this way: a kind of New type conical wheel type stepless variable speed mechanism, including reverse interleaved and axis First cone pulley and the second cone pulley disposed in parallel, first cone pulley and the second cone pulley do not contact, and further include being set in institute simultaneously State the surface of the first cone pulley and the surface of the second cone pulley and a rotatable metal tape, while the metal tape, first cone The axis of wheel and the second cone pulley is in the same plane；The plane and metal tape outer surface intersection and spacing maximum two A point is also symmetrically arranged with two contact rollers rotatable and adjustable in pitch, and an annular is along the circumferential direction offered per the contact roller Limiting slot, the metal tape are close to the annular spacing groove；The metal tape and two contact rollers are along the metal tape It is axial to realize synchronizing moving.

Further, first cone pulley is identical with the size of second cone pulley.

Further, the section of the annular spacing groove is arc or semicircle.

Further, the section of the annular spacing groove is trapezoidal.

Further, the section of the annular spacing groove is V-type.

It further, further include two sliding blocks and two guide rails, two sliding blocks, which correspond, is slidably connected to two The guide rail, the two contact rollers one-to-one correspondence are rotatable to be connected to two sliding blocks, and the distance between two described guide rails can It adjusts.

It further, further include two first bearings and two first rotating shafts；The two contact roller one-to-one correspondence are sheathed on Two first bearings, the two first bearing one-to-one correspondence are sheathed on two first rotating shafts, and two first rotating shafts are one by one Correspondence is fixedly connected on two sliding blocks.

It further, further include two guide rail wheels, two the second shafts and two second bearings；Two guide rail wheels are one by one Corresponding to be sheathed on two second bearings, two second bearings, which correspond, is arranged two second shafts, and two described second Shaft one-to-one correspondence is fixedly connected on two sliding blocks, two guide rail wheels also correspond it is rotatable be connected to two described in lead Rail.

The utility model has the advantages that the utility model provides a kind of New type conical wheel type stepless variable speed mechanism, can be with The spacing between two contact rollers, and then the adjustable pressure being applied on the metal tape are adjusted, to realize in institute It states after metal tape wears, original transmission efficiency can also be kept, while reducing maintenance cost, and the utility model structure Simply, at low cost.

Detailed description of the invention

The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is a kind of front view of New type conical wheel type stepless variable speed mechanism described in the utility model.

Fig. 2 is a kind of left view of New type conical wheel type stepless variable speed mechanism described in the utility model.

Fig. 3 is that the section of contact roller described in the utility model is trapezoidal cross-sectional view.

Fig. 4 is that the section of contact roller described in the utility model is the cross-sectional view of V-type.

Fig. 5 is the structural schematic diagram of the KRG conical ring formula stepless transmission in background technique.

Fig. 6 is the structural schematic diagram of the metal band type stepless speed variator in background technique.

Fig. 7 is the left view partial sectional view of Fig. 6.

Fig. 8 is the structural schematic diagram of the chain-type stepless transmission in background technique.

Fig. 9 is the left view partial sectional view of Fig. 8.

In figure: 1, first cone pulley, the 2, second cone pulley, 3, metal tape, 4, contact roller, 41, annular spacing groove, 5, sliding block, 51, First bearing, 52, first rotating shaft, 53, guide rail wheel, 54, second bearing, the 55, second shaft, 6, guide rail, 7, taper cone pulley, 8, metal Ring, 9, existing metal tape, 10, chain.

Specific embodiment

Shown in please referring to Fig.1 to Fig.4, a kind of New type conical wheel type stepless variable speed of the utility model mechanism, including it is reverse interleaved And axis the first cone pulley 1 disposed in parallel and the second cone pulley 2, first cone pulley 1 and the second cone pulley 2 do not contact, and further include same When be set in the surface of first cone pulley 1 and the surface of the second cone pulley 2 and a rotatable metal tape 3, while the metal Axis with 1, first cone pulley 1 and the second cone pulley 2 is in the same plane；The plane (not shown) and the metal tape 3 outer surfaces are intersected and maximum two points of spacing are also symmetrically arranged with two contact rollers 4 rotatable and adjustable in pitch, pass through adjusting Spacing between two contact rollers 4, can make the metal tape 3 after wearing, only need to by two contact rollers 4 it Between spacing turn down, that is, the pressure that may make two contact rollers 4 to be applied on the metal tape 3 keeps sufficiently large, to protect Original transmission efficiency is held, while reducing maintenance cost, and since every contact roller 4 can rotate, so that the metal Friction with 3 and two between the contact roller 4 reduces, and increases the service life of the metal tape 3, per the contact roller 4 along circle Circumferential direction offers an annular spacing groove, and the metal tape is close to the annular spacing groove, so that the metal tape is by the ring The limit of shape limiting slot, prevents the metal tape from running out of per the contact roller；The metal tape and two contact rollers are described in The axial of metal tape realizes synchronizing moving, by adjusting axial movement of the metal tape along itself, can continuously change biography Dynamic ratio, realizes variable speed.

Preferably, first cone pulley 1 is identical with the size of second cone pulley 2.

Embodiment one, as depicted in figs. 1 and 2, the section of the annular spacing groove 41 are arc or semicircle.

Embodiment three, as shown in figure 3, the section of the annular spacing groove 41 is trapezoidal.

Example IV, as shown in figure 4, the section of the annular spacing groove 41 is V-type.

The annular spacing groove can also have other shapes in other embodiments, here just no longer describe.

It preferably, further include two sliding blocks 5 and two guide rails 6, two sliding blocks 5, which correspond, is slidably connected to two The guide rail 6, two contact rollers 4 correspond it is rotatable be connected to two sliding blocks 6, between two guide rails 6 away from From adjustable.

It preferably, further include two first bearings 51 and two first rotating shafts 52；Two contact rollers 4 correspond set Set on two first bearings 51, two first bearings 51 one-to-one correspondence are sheathed on two first rotating shafts 52, and two described the One shaft 52 one-to-one correspondence is fixedly connected on two sliding blocks 5.

It preferably, further include two guide rail wheels, 53, two the second shafts 55 and two second bearings 54；Two guide rail wheels 53 one-to-one correspondence are sheathed on two second bearings 54, and two one-to-one correspondence of second bearings 54 are arranged two second shafts 55, two one-to-one correspondence of second shaft 55 are fixedly connected on two sliding blocks, and two guide rail wheels 53 are also corresponded and can be rolled Dynamic is connected to two guide rails 6.In other embodiments, the sliding block 5 can also open up a groove (not shown), by recessed Slot (not shown) is directly slidably connected to the guide rail 6.

Stepless speed regulation principle: first cone pulley 1 and second cone pulley 2, select wherein any one as driving wheel, Another stirs the metal tape 3 by a shifting fork device (not shown) and carries out along the axial direction of the metal tape 3 as driven wheel Sliding moves so that two contact rollers 4 be driven to synchronize along the guide rail 6, and then changes first cone pulley 1 and institute The transmission ratio of the second cone pulley 2 is stated, realizes continuous continual variable speed.After the metal tape 3 described in the work is worn, adjust The spacing saved between two guide rails 6 becomes smaller, and then the spacing between two contact rollers 4 is turned down, final to guarantee from two institutes State contact roller 4 be applied to the metal tape 3 pressing force keep it is sufficiently large, realize transmission efficiency keep efficiently, eliminate simultaneously The shortcomings that becket 8 can only be replaced in original technology after wearing, reduce the cost of maintenance.

Although those familiar with the art answers the foregoing describe specific embodiment of the present utility model Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should Cover in the scope of the claimed protection of the utility model.

Claims (8)

1. a kind of New type conical wheel type stepless variable speed mechanism, including reverse interleaved and axis the first cone pulley disposed in parallel and the second cone Wheel, first cone pulley and the second cone pulley do not contact, it is characterised in that: further include the surface for being set in first cone pulley simultaneously Surface and a rotatable metal tape with the second cone pulley, while the axis of the metal tape, first cone pulley and the second cone pulley Line is in the same plane；The plane and the metal tape outer surface are intersected and maximum two points of spacing are also symmetrically arranged with two Contact roller a rotatable and adjustable in pitch along the circumferential direction offers an annular spacing groove, the metal per the contact roller Band is close to the annular spacing groove；The metal tape and two contact rollers are synchronized along the axial realization of the metal tape to be moved It is dynamic.

2. a kind of New type conical wheel type stepless variable speed mechanism according to claim 1, it is characterised in that: first cone pulley and The size of second cone pulley is identical.

3. a kind of New type conical wheel type stepless variable speed mechanism according to claim 1, it is characterised in that: the annular spacing groove Section be arc or semicircle.

4. a kind of New type conical wheel type stepless variable speed mechanism according to claim 1, it is characterised in that: the annular spacing groove Section be it is trapezoidal.

5. a kind of New type conical wheel type stepless variable speed mechanism according to claim 1, it is characterised in that: the annular spacing groove Section be V-type.

6. a kind of New type conical wheel type stepless variable speed mechanism according to claim 1-5, it is characterised in that: further include Two sliding blocks and two guide rails, two sliding blocks, which correspond, is slidably connected to two guide rails, two contact rollers one One correspondence is rotatable to be connected to two sliding blocks, and the distance between two described guide rails are adjustable.

7. a kind of New type conical wheel type stepless variable speed mechanism according to claim 6, it is characterised in that: further include two first Bearing and two first rotating shafts；The two contact roller one-to-one correspondence are sheathed on two first bearings, two first bearings one One correspondence is sheathed on two first rotating shafts, and the two first rotating shafts one-to-one correspondence are fixedly connected on two sliding blocks.

8. a kind of New type conical wheel type stepless variable speed mechanism according to claim 7, it is characterised in that: further include two guide rails Wheel, two the second shafts and two second bearings；The two guide rail wheel one-to-one correspondence are sheathed on two second bearings, described in two Second bearing one-to-one correspondence is arranged two second shafts, and the two second shaft one-to-one correspondence are fixedly connected on two cunnings Block, two guide rail wheels, which also correspond, rotatable is connected to two guide rails.