CN104776180B - One kind is without spin variable speed unit - Google Patents

One kind is without spin variable speed unit Download PDF

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Publication number
CN104776180B
CN104776180B CN201510153818.1A CN201510153818A CN104776180B CN 104776180 B CN104776180 B CN 104776180B CN 201510153818 A CN201510153818 A CN 201510153818A CN 104776180 B CN104776180 B CN 104776180B
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China
Prior art keywords
cone disk
spin
roller
output
input
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CN201510153818.1A
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CN104776180A (en
Inventor
李青涛
李华
姚进
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Sichuan University
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Sichuan University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
    • F16H2015/383—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces with two or more sets of toroid gearings arranged in parallel

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Friction Gearing (AREA)

Abstract

The invention discloses one kind without spin variable speed unit, aim to provide a kind of variable speed unit that spin loss in efficiency is avoided that in certain variator ratio range, one kind is without spin variable speed unit, comprising without spin input cone disk (5), without spin output cone disk (7), without spin roller (6), by clamping force so that it is mutually pressed into contact with, by traction transmission power, roller swings certain angle and realizes speed governing, without spin input cone disk (5), the bus of the surface of revolution of no spin output cone disk (7) is a kind of logarithmic curve.It is this in speed regulation process to be met at a bit without spin input cone disk (5), the common tangent without spin output cone disk (7), the axis of rotation without spin roller (6) and contact point without spin variable speed unit.The present invention can be used for replacing the variable speed unit in all kinds of toroidal type bunchers.

Description

One kind is without spin variable speed unit
Technical field
It is exactly specifically towed variable speed unit the present invention relates to the variable-speed unit in power train.
Background technology
Towed whole ring surface type buncher and towed semi-ring surface type buncher have had part entrucking simultaneously Put goods on the market, such as China Patent Publication No. CN 101479503B, CN 100460715C, CN 1116536C, CN 102725561B and CN 101156006A disclose such buncher.The main composition of its variable-speed unit It is：Input shaft, axial loading device, input cone disk, live roller, output cone disk, output shaft, principle is existed by traction Input disc, live roller and the interval hauling ability transmission motion of output panel contact and power, such design improve contact Friction condition between face, improves bearing capacity, it is adaptable in, huge discharge car.
Its weak point is：Both anchor ring variable speed units are not avoided that " certainly under most working condition Rotation " loss in efficiency.
" spin " one word is generally used when describing towing gear, and it means traction surface and by traction surface Speed is without the idle running phenomenon occurred when accurately being rolled in the way of being mutually matched.This " spin " can cause propulsive efficiency The adverse consequences such as reduction, oil temperature rise, workpiece surface softening.In order to illustrate such not to be mutually matched speed is how to produce , referring to Fig. 1, the detail explanation phenomenon of this " spin ".
In the semi-ring surface type variable speed unit shown in Fig. 1：Anchor ring input cone disk 1 is contacted with anchor ring roller 2 in A points Transmission, the rotational angular velocity of anchor ring input cone disk 1 is ω1, the rotational angular velocity of anchor ring roller 2 is ω2；Anchor ring output cone disk 3 with Anchor ring roller 2 is contacted in B points, and the rotational angular velocity of anchor ring output cone disk 3 is ω3.Anchor ring input cone disk 1 and anchor ring output cone disk 3 axis of rotation intersection point is C, and C points are that anchor ring roller 2, anchor ring input cone disk 1 and anchor ring export relative motion between cone disk 3 It is instantaneous, therefore CA and CB be they between instantaneous axis.It is respectively ω along the relative angular speed on CA and CB directions21With ω23.The common tangent of anchor ring input cone disk 1 and anchor ring roller 2 exports the intersection point of cone disk 3 and the common tangent of anchor ring roller 2 with anchor ring For Θ, Θ A and Θ B are the relative rolling axis between anchor ring roller 2, anchor ring input cone disk 1 and anchor ring output cone disk 3.ΘA Angle with CA is α1, the angle between Θ B and CB is α2.It is respectively ω so in the spin angle velocity of A points and B points21spWith ω23spWherein：ω21sp=|ω21|sinα1, ω23sp=|ω23|sinα2。
For this semi-ring surface type variable speed unit, anchor ring roller 2 needs defeated with anchor ring input cone disk 1, anchor ring Go out to bore disk 3 and keep contact, and the surface of revolution of anchor ring input cone disk 1 and anchor ring output cone disk 3 is all " anchor ring ", that is, ring The anchor ring inlet highway 4a's of the face input cone disk 1 and anchor ring output bus 4b of anchor ring output cone disk 3 is all circular arc line, and this is just So that anchor ring roller can only be around a spot wobble in speed regulation process, also allowing for movement locus of the Θ points in speed regulation process is Circular arc line, that is to say, that only when Θ points and C points intersect at Θ1Point or Θ2During point, this " spin " phenomenon is just avoided that；This Outside, for whole ring surface type buncher, this " spin " phenomenon will exist always.
The content of the invention
The purpose of the present invention is to overcome deficiency of the prior art to be avoided that in certain variator ratio range there is provided one kind The variable speed unit of spin loss in efficiency.
In order to solve above-mentioned technical problem, the present invention uses subordinate's technical scheme：Include input cone disk, output cone Disk, roller, are mutually pressed into contact with by clamping force, and by traction transmission power, roller swings certain angle and realizes speed governing；Input cone Disk, the bus of the surface of revolution of output cone disk is a kind of logarithmic curve, meets equation：
Its parametric equation form is：
Wherein coordinate system XOY origin O is the midpoint of whole variable-speed unit, X-axis and the revolution of input cone disk, output cone disk Center superposition, plane XOY crosses contact point, r0Be roller contact point normal and axis of rotation intersection point between contact point away from From θ is the semi-cone angle of roller, and C and C ＇ are constants, x in input cone disk, the curvilinear equation of the bus of the surface of revolution of output cone disk Mutual contrary sign；Requirement input cone disk is moved axially with output cone disk along gyroaxis in speed regulation process, roller edge revolution Axial and radial It is mobile.
According to above-mentioned curvilinear equation, by mathematical proof, it can be deduced that such as draw a conclusion：It is any one from this logarithmic curve It is certain value r that point, which arrived the tangent line of this point and the distance of the intersection point of X-axis,0tanθ；It can be drawn using above-mentioned by this property Technical scheme, the present invention provide without spin variable speed unit, with such beneficial effect：I.e. in speed adjustable range, this The roller axis of rotation without spin variable speed unit, the public affairs for the axis of rotation and contact point that disk is bored in input cone disk output is planted to cut Line is met at a bit, i.e., without spin loss in efficiency in speed adjustable range.
Brief description of the drawings
Fig. 1 is existing semi-ring surface type variable speed unit transmission principle figure.
Fig. 2 be without spin variable speed unit gearratio be 1 when drive state figure.
Fig. 3 be without spin variable speed unit gearratio be 1 when drive state figure.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Without spin variable speed unit due to its special curve form, allow in speed regulation process in variable-speed unit Main element needs to adjust the position of itself, then must determine a kind of state to determine origin position.When being 1 in gear ratio When, each position of components in whole variable-speed unit is relatively special, so for the ease of narration, no spin variable speed unit Gearratio be 1 when drive state figure figure 2 illustrates.Without spin input cone disk 5 with being pressed in contact point C without spin roller 6 Point, no output cone disk 7 that spins without spin roller 6 with being pressed in contact point D points, and in C, D, 2 points are respectively formed oil film by the rotation of each element Turn transmission power.Point P1For without spin roller 6 fixed point when gearratio is 1 where position, point P1It is contact point C, D Normal and the intersection point without the spin axis of rotation of roller 6, | CP1|=|DP1|=r0.Semi-cone angle without spin roller 6 is θ.Coordinate system XOY X-axis is overlapped with without spin input cone disk 5, the axis of rotation without spin output cone disk 7, and origin of coordinates O points are no spin Input cone disk 5, the midpoint without spin output cone disk 7 in X-axis, XOY plane cross contact point C and point D.Cross without spin input cone disk The upper point C of bus 8a tangent line Θ C are with crossing the tangent line Θ D without the upper point D of spin output cone disk bus 8b, because input cone disk is female Line 8a understands that this two tangent line Θ C and Θ D intersection point Θ mono- is scheduled on the curvilinear equation property without spin output cone disk bus 8b In X-axis, and | Θ C |=| Θ D |.If the geometry of roller disclosure satisfy that with this parameter：|ΘC|=|ΘD|=r0Tan θ, So the axis of rotation of roller necessarily meets at point Θ with X-axis.Because gearratio at this moment is 1, then point Θ at this moment and origin O Overlap.Obviously do not spinned loss in efficiency in point C and point D Traction Drive.In addition, without spin input cone disk 5 and origin O away from From for R1, the distance of no spin output cone disk 7 and origin O is R2, when gearratio is 1, R1=R2.
In figure 3, no spin roller 6 deflection angle is γ, and at this moment gearratio is not 1, but point Θ is still in X-axis, Still do not spinned loss in efficiency in point C and point D Traction Drive exactly, but the fixed point position at this moment without the roller 6 that spins At point P2, P2 in Y-axis, | OP1 |>|OP2|.Disk 5 is bored with boring the energy of disk 7 without spin output in order to ensure to input without spin simultaneously Keep contacting with without spin roller 6 respectively, no spin input cone disk 5 without spin output cone disk 7 with needing to move one in the axial direction Fixed distance, now, the distance of no spin input cone disk 5 and origin O is R3, and the distance of no spin output cone disk 7 and origin O is R4, is determined by input cone disk bus 8a with the equation without spin output cone disk bus 8b here：R3>R1, R4>R2 and R3 ≠ R4。
It is a feature of the present invention that without spin input cone disk 5 with being needed without spin output cone disk 7 along it in speed regulation process Axis of rotation is moved, and no spin roller 6 needs to deflect certain angle, and is moved along Y-axis, according to spin input cone disk bus The property of curvilinear equations of the 8a with boring disk bus 8b without spin output without spin input cone disk 5, without spin it is recognised that export cone Disk 7, the axis of rotation without spin roller 6 necessarily meet at a point Θ with contact point C, D common tangent.It is namely this to become without spin Fast unit can be realized in certain ratio coverage without spin Traction Drive.

Claims (1)

1. it is a kind of without spin variable speed unit, comprising input cone disk, output cone disk, roller, by clamping force so that input cone Disk, output cone disk are mutually pressed into contact with roller respectively, and by traction transmission power, roller swings certain angle and realizes speed governing；Its It is characterised by：Input cone disk, the bus of the surface of revolution of output cone disk are a kind of logarithmic curves, meet equation：
Its parametric equation form is：
Wherein coordinate system XOY origin O is the midpoint of whole variable-speed unit, X-axis and input cone disk, the axis of rotation of output cone disk Overlap, plane XOY crosses roller and input cone disk, the contact point of output cone disk, r0It is roller contact point normal and its axis of rotation Intersection point the distance between to contact point, θ is the semi-cone angle of roller, and γ is roller deflection angle, and C and C ＇ are constants, input cone disk, The mutual contrary signs of x in the curvilinear equation of the bus of the surface of revolution of output cone disk；Input cone disk and output are required in speed regulation process Cone disk is moved axially along gyroaxis, and roller is moved radially along gyroaxis.
CN201510153818.1A 2015-04-02 2015-04-02 One kind is without spin variable speed unit Active CN104776180B (en)

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CN105276110B (en) * 2015-07-29 2017-05-31 四川大学 One kind is without the towed buncher that spins
KR102560906B1 (en) * 2016-04-04 2023-07-28 마자로 엔브이 Planetary variator for variable transmission
CN105881210B (en) * 2016-05-18 2019-02-01 同济大学 Automatic stepless speed-changing device and its application method for the transmission of rotary type cutter
CN106438891B (en) * 2016-10-31 2019-09-10 西华大学 A kind of towed CVT is without spin structure design method
CN107339384B (en) * 2016-10-31 2024-06-07 深圳万知达科技有限公司 Spin-integration-curve-free stepless speed change unit
CN107289081A (en) * 2016-10-31 2017-10-24 西华大学 It is a kind of to roll cone-shaped stepless speed change units without spin more
CN107339385B (en) * 2016-10-31 2023-08-15 西华大学 Spin-free single-ring disc type stepless speed change unit
CN106838190B (en) * 2016-12-21 2019-05-17 四川大学 A kind of parallel axes is without the towed stepless transmission that spins
CN106931114B (en) * 2016-12-21 2019-03-29 四川大学 A kind of adaptive rate is without the towed stepless transmission that spins
CN108240436B (en) * 2018-01-12 2020-10-13 四川大学 Traction type CVT non-spinning mechanism comprehensive method
CN110925372A (en) * 2019-12-09 2020-03-27 西华大学 Full-contact easy-speed-regulation inner cone type stepless speed change unit
CN110803218B (en) * 2019-12-09 2021-06-11 西华大学 Single-power flow stepless steering transmission system of tracked vehicle
CN113883242A (en) * 2020-07-02 2022-01-04 四川大学 Self-adaptive variable speed runner exponential type non-spinning traction type continuously variable transmission

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US5916057A (en) * 1997-05-27 1999-06-29 Excelermalic Inc. Zero spin infinitely variable traction roller transmission
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CN1890488A (en) * 2003-11-14 2007-01-03 轨道牵引有限公司 An improved continuously variable transmission device

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Publication number Priority date Publication date Assignee Title
US5916057A (en) * 1997-05-27 1999-06-29 Excelermalic Inc. Zero spin infinitely variable traction roller transmission
CN1568407A (en) * 2001-09-08 2005-01-19 轨道牵引有限公司 An improved continuously variable transmission device
CN1890488A (en) * 2003-11-14 2007-01-03 轨道牵引有限公司 An improved continuously variable transmission device

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