WO2017097254A1 - Friction type torque converter - Google Patents

Friction type torque converter Download PDF

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WO2017097254A1
WO2017097254A1 PCT/CN2016/109207 CN2016109207W WO2017097254A1 WO 2017097254 A1 WO2017097254 A1 WO 2017097254A1 CN 2016109207 W CN2016109207 W CN 2016109207W WO 2017097254 A1 WO2017097254 A1 WO 2017097254A1
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ring
roller
torque converter
friction
force
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PCT/CN2016/109207
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French (fr)
Chinese (zh)
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许水电
李延福
许涛
许永建
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马鞍山支点传孚智能摩擦工业研究院有限公司
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Priority to CN201510923328.5 priority Critical
Priority to CN201510923328.5A priority patent/CN105351467B/en
Application filed by 马鞍山支点传孚智能摩擦工业研究院有限公司 filed Critical 马鞍山支点传孚智能摩擦工业研究院有限公司
Publication of WO2017097254A1 publication Critical patent/WO2017097254A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H15/00Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/48Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members with members having orbital motion
    • F16H15/50Gearings providing a continuous range of gear ratios

Abstract

A friction type torque converter comprises an inner ring (1), large rolling columns (2), and an outer ring (3). The inner ring (1) is an input unit, and at least two grooves (101) being uniformly provided on a peripheral ring surface of the inner ring (1), each groove (101) corresponding to one large rolling column (2). The outer ring (3) is an output unit, the outer ring (3) sleeves the inner ring (1) and is coaxially arranged with the inner ring (1), and an outer ring inner rolling way is formed in an inner side circumferential surface of the outer ring (3) to fit each rolling column (2, 4). When a rotating speed and a load are changed, the rolling columns (2, 4) can adaptively work under the co - action of a centrifugal force and the inner ring (1) to finally realize locking output, automatic speed change and torque conversion of the friction type torque converter , so as to satisfy different applications.

Description

摩擦式变矩器Friction torque converter 技术领域Technical field
本发明公开一种摩擦式变矩器,能够实现无级变速、自动变矩的传动系统。The invention discloses a friction type torque converter, which can realize a transmission system with continuously variable speed and automatic torque change.
背景技术Background technique
目前,应用最广泛的变矩器是液力变矩器,亦称扭力转换器,安装在发动机和变速器之间,以液压油(ATF)为工作介质,起传递转矩,变矩,变速及离合的作用。它是一种以液体为工作介质的非刚性扭矩变换器,是液力传动的型式之一,应用极其广泛。液力变矩器是由泵轮、涡轮和导轮等组成,液力变矩器不仅增大了发动机的扭矩,而且还实现发动机和自动变速箱之间的柔性连接,既有效地解决了发动机的熄火问题又能够自如地实现自动换挡。At present, the most widely used torque converter is a torque converter, also known as a torque converter, which is installed between the engine and the transmission. It uses hydraulic oil (ATF) as the working medium to transmit torque, torque, and speed. The role of clutching. It is a kind of non-rigid torque converter with liquid as working medium. It is one of the types of hydraulic transmission and it is widely used. The torque converter is composed of a pump wheel, a turbine and a guide wheel. The torque converter not only increases the torque of the engine, but also realizes a flexible connection between the engine and the automatic transmission, which effectively solves the engine. The problem of flameout is free to achieve automatic shifting.
液力变矩器的主要缺点是结构复杂,成本较高,质量较大,以及由于存在液力损失,使机器的传动效率有所降低,因而机器燃料经济性和牵引效率有所降低。为了解决这个问题,有些汽车上的扭矩转换器上有一个锁止离合器来提高传动效率,但是复杂的系统和昂贵的传动部件一直以来都是让维修市场和用户头疼的主要问题。The main disadvantages of the torque converter are that the structure is complicated, the cost is high, the mass is large, and the transmission efficiency of the machine is reduced due to the loss of hydraulic force, so the fuel economy and traction efficiency of the machine are reduced. In order to solve this problem, some car torque converters have a lock-up clutch to improve transmission efficiency, but complicated systems and expensive transmission components have always been a major problem for the maintenance market and users.
发明内容Summary of the invention
针对现有技术的不足,本发明提供了一种摩擦式变矩器,在对摩擦、传动、材料及润滑等多系统研究的基础上,通过全新的设计,改变传统的变矩器形态,简化了变矩器的结构,提高传递效率,降低成本,具有性能优越、自适应性强、无级变速、自动闭锁、绿色环保等优点。In view of the deficiencies of the prior art, the present invention provides a friction type torque converter, which is based on a multi-system research on friction, transmission, materials and lubrication, and changes the shape of the conventional torque converter through a completely new design. The structure of the torque converter improves the transmission efficiency and reduces the cost, and has the advantages of superior performance, strong adaptability, stepless speed change, automatic lockout, and environmental protection.
为达到上述目的,本发明是通过以下技术方案实现的:In order to achieve the above object, the present invention is achieved by the following technical solutions:
一种摩擦式变矩器,包括内环、大滚柱及外环,其中:A friction torque converter includes an inner ring, a large roller and an outer ring, wherein:
内环,其为输入单元,内环周侧环面上均分设有至少两个凹形槽,每个凹 形槽分别对应一个大滚柱;An inner ring, which is an input unit, and at least two concave grooves are equally divided on the inner ring side surface of the inner ring, each concave The groove corresponds to one large roller;
外环,其为输出单元,外环套在内环外并与内环同轴布设,外环的内侧圆周面形成外环内滚道并与各滚柱压切配合;The outer ring is an output unit, and the outer ring sleeve is disposed outside the inner ring and coaxially disposed with the inner ring, and the inner circumferential surface of the outer ring forms an inner ring inner raceway and is press-fitted with each roller;
大滚柱,其设置于内、外环之间,相邻凹形槽内的大滚柱之间具有间隙,目的是每一凹形槽内的滚柱均能单独由内环输入转化传递给外环输出;The large roller is disposed between the inner and outer rings, and has a gap between the large rollers in the adjacent concave grooves. The purpose is that the rollers in each concave groove can be separately transferred from the inner ring input to Outer loop output;
转速和负载发生变化时,各滚柱在离心力和内环的共同作用下实现自适应工作,同时通过内环与滚柱、滚柱与外环之间的机械摩擦传动,实现自动闭锁输出、自动变速和变矩。When the speed and load change, each roller realizes adaptive operation under the action of centrifugal force and inner ring, and realizes automatic blocking output and automatic through mechanical friction transmission between inner ring and roller, roller and outer ring. Variable speed and torque.
进一步,摩擦式变矩器的内环作用在大滚柱的力传递到外环,此时,作用力发生变化,同时,力臂变长,其公式如下:Further, the inner ring of the friction torque converter transmits the force of the large roller to the outer ring. At this time, the force changes, and at the same time, the force arm becomes long, and the formula is as follows:
扭矩公式:T=F·L;Torque formula: T=F·L;
Figure PCTCN2016109207-appb-000001
Figure PCTCN2016109207-appb-000001
Figure PCTCN2016109207-appb-000002
Figure PCTCN2016109207-appb-000002
其中:among them:
T为扭矩;T is the torque;
F为驱动旋转的力;F is the force that drives the rotation;
L为力臂;L is the force arm;
FX为单个滚柱与外环内滚道的切向力;F X is the tangential force of the single roller and the inner race of the outer ring;
FY为单个滚柱与外环内滚道的径向力;F Y is the radial force of the single roller and the inner race of the outer ring;
F为大滚柱的离心力; F is the centrifugal force of the large roller;
α为内环和对应的大滚柱压力角;α is the inner ring and the corresponding large roller pressure angle;
m为大滚柱质量;m is the mass of the large roller;
v为大滚柱相对外环内滚道的线速度;v is the linear velocity of the large roller relative to the inner race of the outer ring;
r为外环内滚道的半径;r is the radius of the inner race of the outer ring;
摩擦式变矩器的变矩是由力臂、压力角α以及大滚柱的离心力共同决定。The torque of the friction torque converter is determined by the force arm, the pressure angle α, and the centrifugal force of the large roller.
进一步,摩擦式变矩器的转速达到一定速度且负载较小时,各滚柱在静摩擦的作用下内环转动和外环连接成一体,变矩器闭锁输出,内环转速n1=外环n2;当负载继续增大到一定程度时,外环的速度n2降低,各滚柱与外环相对运动,处于打滑状态,n1>n2,此时各滚柱在内环的作用下,实现自动变速和变矩,以满足负载的要求;作用一段时间后,速度提升,负载减小,滚柱和外环之间由动摩擦自动切换为静摩擦,摩擦系数增加,内环、各滚柱和外环再次连接成一体n1=n2,变矩器重新自动闭锁输出。Further, when the rotational speed of the friction torque converter reaches a certain speed and the load is small, the inner ring rotates and the outer ring is integrated under the action of static friction, the torque converter blocks the output, and the inner ring speed n 1 = outer ring n 2 ; When the load continues to increase to a certain extent, the speed n 2 of the outer ring decreases, the rollers move relative to the outer ring, and are in a slip state, n 1 >n 2 , at which time each roller acts under the inner ring Realize automatic shifting and torque change to meet the load requirements; after a period of time, the speed is increased, the load is reduced, the dynamic friction between the roller and the outer ring is automatically switched to static friction, the friction coefficient is increased, the inner ring and the rollers are The outer ring is again connected to the integral n 1 =n 2 , and the torque converter re-locks the output automatically.
进一步,所述内环与滚柱形成压力角α,压力角α为12°~40°。Further, the inner ring forms a pressure angle α with the roller, and the pressure angle α is 12° to 40°.
进一步,外环内滚道直径D与大滚柱直径d比值D/d=1.2~6,外环内滚道直径D与大滚柱直径d的比值D/d大小决定力臂L的长短变化。Further, the ratio D/d of the outer ring inner diameter D to the large roller diameter d is 1.2 to 6, and the ratio D/d of the outer ring inner diameter D to the large roller diameter d determines the length of the force arm L. .
进一步,相邻大滚柱间的间隙s>0.2mm。Further, the gap s between adjacent large rollers is > 0.2 mm.
进一步,相邻大滚柱之间设有一个以上的小滚柱,各小滚柱直径小于大滚柱,小滚柱位于内环凹形槽之间的内环圆周面上,小滚柱的外滚道面为外环内侧圆周面。优选的,相邻小滚柱之间及大滚柱与小滚柱的间隙s>0.2mm。Further, more than one small roller is disposed between adjacent large rollers, each small roller has a smaller diameter than the large roller, and the small roller is located on the inner circumferential surface of the inner ring concave groove, and the small roller The outer raceway surface is the inner circumferential surface of the outer ring. Preferably, the gap between adjacent small rollers and between the large roller and the small roller is s>0.2 mm.
本发明具有如下优点:The invention has the following advantages:
(1)结构简单(1) Simple structure
摩擦式变矩器结构主体由内环、滚柱和外环组成,相比扭力变矩器中泵轮、涡轮和导轮而言,结构简单,可靠性强、成本低、绿色环保。 The main body of the friction torque converter is composed of an inner ring, a roller and an outer ring. Compared with the pump wheel, the turbine and the guide wheel in the torque converter, the structure is simple, the reliability is high, the cost is low, and the environment is green.
(2)具有自动变速、自动增矩和自动闭锁功能(2) With automatic shifting, automatic torque increase and automatic lockout
1)当转速和负载发生变化时,大、小滚柱在离心力和内环凸轮的共同作用下实现自适应工作,最终实现摩擦式变矩器的闭锁输出、自动变速和变矩;1) When the speed and load change, the large and small rollers realize the adaptive operation under the joint action of the centrifugal force and the inner ring cam, and finally realize the blocking output, automatic shifting and torque change of the friction torque converter;
2)内环、大滚柱、小滚柱和外环的结构设计共同决定了自动变速的范围和增矩的倍数,因此,可以匹配不同的参数以满足不同应用场合的要求。2) The structural design of the inner ring, the large roller, the small roller and the outer ring together determine the range of the automatic shifting and the multiple of the torque increase. Therefore, different parameters can be matched to meet the requirements of different applications.
(3)传动效率高(3) High transmission efficiency
根据能量守恒定律,输入能量除了很小一部分转化为滚柱自转的能量损失外,其余全部用来输出,因此,较液力矩器:其油温低、传动响应快,传递效率高。According to the law of conservation of energy, except for a small part of the input energy, which is converted into energy loss of the rotation of the roller, all of the input energy is used for output. Therefore, the liquid torque device has low oil temperature, fast transmission response and high transmission efficiency.
本发明摩擦式变矩器结构,主要应用于汽车、工程机械、军用车辆、石油、化工、矿山、冶金机械等领域,应用非常广泛。The friction type torque converter structure of the invention is mainly applied to the fields of automobiles, engineering machinery, military vehicles, petroleum, chemical industry, mining, metallurgical machinery, etc., and is widely used.
附图说明DRAWINGS
图1是本发明实施例结构示意图。1 is a schematic structural view of an embodiment of the present invention.
图2是本发明摩擦式变矩大滚柱受力分析示意图。2 is a schematic view showing the force analysis of the friction type large torque roller of the present invention.
图3本发明摩擦式变矩外环和内环凸轮旋转示意图。Fig. 3 is a schematic view showing the rotation of the frictional torque outer ring and the inner ring cam of the present invention.
图4是本发明仅包括大滚柱结构示意图。Fig. 4 is a schematic view showing the structure of the present invention including only a large roller.
具体实施方式detailed description
下面结合附图对本发明作进一步说明:The present invention will be further described below in conjunction with the accompanying drawings:
实施例:请参阅图4,一种摩擦式变矩器,包括内环1、大滚柱2及外环3,其中:Embodiment: Referring to FIG. 4, a friction torque converter includes an inner ring 1, a large roller 2 and an outer ring 3, wherein:
内环1,其为输入单元,内环周侧环面上均分设有至少两个凹形槽101形成内环凸轮,每个凹形槽分别对应一个大滚柱,图4中设置3个凹形槽及对应的大滚柱2;The inner ring 1 is an input unit, and at least two concave grooves 101 are respectively formed on the inner ring side annular surface to form an inner ring cam, and each concave groove corresponds to one large roller, and three concaves are arranged in FIG. Shape groove and corresponding large roller 2;
外环3,其为输出单元,外环3套在内环1外并与内环1同轴布设,外环 3的内侧圆周面形成外环内滚道并与各滚柱压切配合,这里的压切指滚柱面抵压在外环内滚道上,由于滚柱与外环均为弧形面,两者必然相切抵压;The outer ring 3 is an output unit, and the outer ring 3 is disposed outside the inner ring 1 and coaxially disposed with the inner ring 1, the outer ring The inner circumferential surface of 3 forms an inner ring inner raceway and is press-fitted with each roller. Here, the pressure cutting means that the roller surface is pressed against the inner ring inner raceway, since both the roller and the outer ring are curved surfaces, two Those must be responsive to each other;
大滚柱2,其设置于内、外环之间,相邻凹形槽内的大滚柱之间具有间隙,目的是每一凹形槽内的滚柱独立由内环1输入转化传递给外环3输出;The large roller 2 is disposed between the inner and outer rings, and has a gap between the large rollers in the adjacent concave grooves. The purpose is that the rollers in each concave groove are independently transferred and converted by the inner ring 1 input. Outer ring 3 output;
转速和负载发生变化时,各滚柱2在离心力和内环1的共同作用下实现自适应工作,同时通过内环1与滚柱2、滚柱2与外环3之间的机械摩擦传动,实现自动闭锁输出、自动变速和变矩。When the rotational speed and the load change, each roller 2 realizes adaptive operation under the combined action of the centrifugal force and the inner ring 1, and at the same time, through the mechanical friction transmission between the inner ring 1 and the roller 2, the roller 2 and the outer ring 3, Automatic latching output, automatic shifting and torque change.
摩擦式变矩器,内环1可以与输入轴相连形成动力输入,而外环3可以与输出法兰或其他输出部件连接,其工作与液力变矩器有着本质上的不同,它能根据负载和速度的变化,在离心力和内环凸轮的共同作用下,通过内环与大小滚柱和外环之间的机械摩擦传动,实现自动闭锁、自动变速和变矩等功能。Friction type torque converter, the inner ring 1 can be connected with the input shaft to form a power input, and the outer ring 3 can be connected with the output flange or other output parts, and its operation is substantially different from that of the torque converter, and it can be based on The change of load and speed, under the combined action of centrifugal force and inner ring cam, realizes automatic locking, automatic shifting and torque changing through the mechanical friction transmission between the inner ring and the large and small rollers.
本发明种摩擦式变矩器结构,其包括输入轴、内环凸轮、大滚柱、小滚柱、外环及输出法兰。动力通过输入轴传输,输入轴与内环凸轮连接;负载传递至输出法兰;内环凸轮与外环同轴设置;内环凸轮和外环之间圆周放置多个大滚柱,外环与输出法兰连接。The friction torque converter structure of the present invention comprises an input shaft, an inner ring cam, a large roller, a small roller, an outer ring and an output flange. The power is transmitted through the input shaft, the input shaft is connected with the inner ring cam; the load is transmitted to the output flange; the inner ring cam is coaxially disposed with the outer ring; and a plurality of large rollers are placed on the circumference between the inner ring cam and the outer ring, and the outer ring is Output flange connection.
如图1,相邻大滚柱2之间设有一个以上的小滚柱4,各小滚柱4直径小于大滚柱2,小滚柱4位于内环凹形槽之间的内环圆周面上,小滚柱的外滚道面为外环内侧圆周面,图1实施例中设置内环周侧环面上均分设有4个凹形槽101。As shown in Fig. 1, more than one small roller 4 is disposed between adjacent large rollers 2, each small roller 4 has a smaller diameter than the large roller 2, and the small roller 4 is located at the inner ring circumference between the concave grooves of the inner ring. On the surface, the outer raceway surface of the small roller is the inner circumferential surface of the outer ring. In the embodiment of Fig. 1, four concave grooves 101 are equally disposed on the circumferential side of the inner ring.
如图2所示,本发明摩擦式变矩器的增矩主要通过改变滚柱2作用在外环3内滚道的作用力和改变力臂来实现。内环1作用在大滚柱2的力传递到外环3,此时,作用力发生变化,同时,力臂也由L1变为L2,力臂变长。具体如下:As shown in FIG. 2, the torque increase of the friction torque converter of the present invention is mainly achieved by changing the force of the roller 2 acting on the inner race of the outer ring 3 and changing the force arm. The force acting on the large roller 2 by the inner ring 1 is transmitted to the outer ring 3, at which time the force changes, and at the same time, the force arm also changes from L 1 to L 2 , and the force arm becomes long. details as follows:
根据扭矩公式:T=F·L According to the torque formula: T=F·L
Figure PCTCN2016109207-appb-000003
Figure PCTCN2016109207-appb-000003
Figure PCTCN2016109207-appb-000004
Figure PCTCN2016109207-appb-000004
其中:among them:
T为扭矩;T is the torque;
F为驱动旋转的力;F is the force that drives the rotation;
L为力臂;L is the force arm;
FX为单个滚柱与外环内滚道的切向力;F X is the tangential force of the single roller and the inner race of the outer ring;
FY为单个滚柱与外环内滚道的径向力;F Y is the radial force of the single roller and the inner race of the outer ring;
F为大滚柱的离心力;F is the centrifugal force of the large roller;
α为内环和对应的大滚柱压力角;α is the inner ring and the corresponding large roller pressure angle;
m为大滚柱质量;m is the mass of the large roller;
v为大滚柱相对外环内滚道的线速度;v is the linear velocity of the large roller relative to the inner race of the outer ring;
r为外环内滚道的半径。r is the radius of the inner race of the outer ring.
根据图1和2,内环1外侧环面上设有凹形槽101形成内环凸轮,每个凹形槽分别对应一个大滚柱2。外环内滚道直径D与大滚柱直径d的比值D/d大小决定了力臂L变化倍数的大小,图2中L1表示内环凸轮凹形槽与大滚柱的接触点到圆心o的距离,L2表示外环内滚道与大滚柱的接触点到圆心o的距离,其中D/d值越大,L2/L1比值越小,力臂变化倍数小,反之则变化倍数长。力臂变化倍数小起不了增矩的作用,倍数太大虽然增矩效果明显,但无法满足转速的要求,因此,外环内滚道直径D与大滚柱直径d比值D/d=1.2~6,大滚柱直 径占外环内滚道直径的1/6~5/6,包括1/6至5/6之间的所有值,如2/6、2.5/6、3/6、3.5/6、4/6等,进而对应引起力臂变化的倍数为1.5~5.5。According to Figures 1 and 2, a concave groove 101 is formed on the outer annular surface of the inner ring 1 to form an inner ring cam, and each concave groove corresponds to a large roller 2, respectively. The ratio D/d of the outer ring inner race diameter D to the large roller diameter d determines the magnitude of the change of the force arm L. In Fig. 2, L 1 represents the contact point of the inner ring cam concave groove with the large roller to the center of the circle. The distance of o, L 2 represents the distance from the contact point of the outer ring inner raceway to the large roller to the center o, where the larger the D/d value, the smaller the L 2 /L 1 ratio, and the smaller the force arm change ratio, and vice versa. The change factor is long. The change of the force arm is small, and the effect of increasing the moment is small. Although the multiple is too large, although the effect of increasing the moment is obvious, the speed requirement cannot be met. Therefore, the ratio of the diameter D of the outer ring inner diameter to the diameter d of the large roller is D/d=1.2~ 6. The diameter of the large roller accounts for 1/6 to 5/6 of the diameter of the inner ring of the outer ring, including all values between 1/6 and 5/6, such as 2/6, 2.5/6, 3/6, 3.5. /6, 4/6, etc., and the multiple corresponding to the change in the force arm is 1.5 to 5.5.
同时,根据
Figure PCTCN2016109207-appb-000005
得,当转速一定时,旋转驱动力F变化的倍数由
Figure PCTCN2016109207-appb-000006
决定,即由内环凸轮和对应大滚柱的压力角α和摩擦系数μ决定,tanα的值必须大于摩擦系数μ,太小无法实现动态的变矩。在此前提下,压力角α越小,增矩倍数较大,反之增矩倍数则越小。假设摩擦系数μ=0.08,当α=10°时,
Figure PCTCN2016109207-appb-000007
当α=30°时,
Figure PCTCN2016109207-appb-000008
根据摩擦式变矩器结构设计要求,内环凸轮和对应的大滚柱压力角α为12°~40°。
At the same time
Figure PCTCN2016109207-appb-000005
Therefore, when the rotational speed is constant, the multiple of the rotational driving force F is changed by
Figure PCTCN2016109207-appb-000006
The decision is determined by the pressure angle α of the inner ring cam and the corresponding large roller and the friction coefficient μ, and the value of tanα must be greater than the friction coefficient μ, which is too small to achieve dynamic torque. Under this premise, the smaller the pressure angle α, the larger the multiplication moment, and the smaller the multiplication factor. Suppose the friction coefficient μ=0.08, when α=10°,
Figure PCTCN2016109207-appb-000007
When α=30°,
Figure PCTCN2016109207-appb-000008
According to the structural design requirements of the friction torque converter, the pressure angle α of the inner ring cam and the corresponding large roller is 12° to 40°.
本发明摩擦式变矩器的变矩由D/d值、压力角α以及离心力共同决定,因此,可以根据负载及工况的要求,对摩擦式变矩器结构进行设计,以满足不同领域的应用。The torque converter of the friction torque converter of the invention is determined by the D/d value, the pressure angle α and the centrifugal force. Therefore, the friction torque converter structure can be designed according to the requirements of the load and working conditions to meet different fields. application.
图1中,内环通过与大滚柱摩擦传动,进而与小滚柱和外环的摩擦实现摩擦式变矩器的工作,最终实现自动变速和变矩的功能。其中,大滚柱的个数和内环凸轮凹槽的相对应,大滚柱的个数为2个及以上,当大滚柱的个数为1个时,内环凸轮难以带动大滚柱和滚柱作旋转运动,摩擦式变矩器无法正常工作。In Fig. 1, the inner ring is frictionally driven with the large roller, and then the friction between the small roller and the outer ring realizes the operation of the friction torque converter, and finally realizes the functions of automatic shifting and torque change. Wherein, the number of large rollers corresponds to the inner ring cam groove, and the number of large rollers is two or more. When the number of large rollers is one, the inner ring cam is difficult to drive the large roller. With the roller for rotary motion, the friction converter does not work properly.
本发明各相邻滚柱之间的最小间隙s大于0.2mm,由于加工误差和装配误差的存在,当相邻滚柱之间的间隙小于0.2mm时,摩擦力变矩器容易出现卡死损坏,因此滚柱间的间隙不能小于0.2mm,本发明相邻滚柱之间的间隙s大于0.2mm,不但指相邻小滚柱之间隙,大滚柱与小滚柱之间也适合,小滚柱是设置在两大滚柱之间并能滚动,因此,内环通过与大滚柱摩擦传动,大滚柱进而推动相邻的小滚柱,进而与小滚柱和外环的摩擦实现摩擦式变矩器的工作。 The minimum gap s between adjacent rollers of the present invention is greater than 0.2 mm. Due to machining errors and assembly errors, when the gap between adjacent rollers is less than 0.2 mm, the friction torque converter is prone to jamming damage. Therefore, the gap between the rollers cannot be less than 0.2 mm, and the gap s between adjacent rollers of the present invention is greater than 0.2 mm, which not only refers to the gap between adjacent small rollers, but also between large rollers and small rollers. The roller is arranged between the two rollers and can roll. Therefore, the inner ring is frictionally driven with the large roller, and the large roller pushes the adjacent small roller, thereby achieving friction with the small roller and the outer ring. The work of the friction converter.
如图3所示,本发明的摩擦式变矩器的闭锁原理:当转速达到一定速度且负载较小时,大、小滚柱在静摩擦的作用下内环凸轮转动和外环连接成一体,变矩器闭锁输出,n1=n2;当负载继续增大到一定程度时,外环的速度n2降低,各滚柱与外环相对运动,处于打滑状态,n1>n2此时各滚柱在内环凸轮的作用下,实现自动变速和变矩,以满足负载的要求。作用一段时间后,速度提升,负载减小,大、小滚柱和外环之间由动摩擦自动切换为静摩擦,摩擦系数增加,内环凸轮、大滚柱、小滚柱和外环再次连接成一体n1=n2,变矩器重新自动闭锁输出。As shown in FIG. 3, the locking principle of the friction torque converter of the present invention: when the rotational speed reaches a certain speed and the load is small, the inner and outer cams are connected and integrated by the large and small rollers under the action of static friction. The torque of the brake is blocked, n 1 =n 2 ; when the load continues to increase to a certain extent, the speed n 2 of the outer ring decreases, and the rollers move relative to the outer ring, and are in a slip state, n 1 >n 2 The roller realizes automatic shifting and torque change under the action of the inner ring cam to meet the load requirements. After a period of action, the speed is increased and the load is reduced. The dynamic friction is automatically switched to the static friction between the large and small rollers and the outer ring. The friction coefficient is increased, and the inner ring cam, the large roller, the small roller and the outer ring are connected again. Integral n 1 =n 2 , the torque converter re-locks the output automatically.
本发明公开一种摩擦式变矩器结构,其包括输入轴、内环凸轮、大滚柱、滚柱、外环及输出法兰。动力通过输入轴传输,输入轴与内环凸轮连接;负载传递至输出法兰;内环凸轮与外环同轴设置;内环凸轮和外环之间圆周放置多个大滚柱,外环与输出法兰连接。当转速和负载发生变化时,滚柱在离心力和内环凸轮的共同作用下实现自适应工作,最终实现摩擦式变矩器的闭锁输出、自动变速和变矩,满足不同的应用。该变矩器结构具有结构简单、传递效率高、无级变速、自适应强,具有自动闭锁功能、节能环保等优点。The invention discloses a friction torque converter structure, which comprises an input shaft, an inner ring cam, a large roller, a roller, an outer ring and an output flange. The power is transmitted through the input shaft, the input shaft is connected with the inner ring cam; the load is transmitted to the output flange; the inner ring cam is coaxially disposed with the outer ring; and a plurality of large rollers are placed on the circumference between the inner ring cam and the outer ring, and the outer ring is Output flange connection. When the rotational speed and load change, the roller realizes adaptive operation under the combined action of centrifugal force and inner ring cam, and finally realizes the lockout output, automatic shifting and torque change of the friction torque converter to meet different applications. The torque converter structure has the advantages of simple structure, high transmission efficiency, stepless speed change, strong self-adaptation, automatic locking function, energy saving and environmental protection.
综合上述,该变矩器结构具有结构简单、传递效率高、根据负载和速度的变化实现自动变速和自动增矩,具有自动闭锁等优点。改变传统的变矩器形态,降低成本,自适应性强,绿色环保,效果显著。In summary, the torque converter structure has the advantages of simple structure, high transmission efficiency, automatic shifting and automatic torque increase according to changes in load and speed, and automatic locking. Change the traditional torque converter shape, reduce costs, adaptability, green and environmental protection, and the effect is remarkable.
以上所记载,仅为利用本创作技术内容的实施例,任何熟悉本项技艺者运用本创作所做的修饰、变化,皆属本创作主张的专利范围,而不限于实施例所揭示者。 The above descriptions are merely examples of the use of the present technical content, and any modifications and variations made by those skilled in the art using the present invention are the scope of patents claimed herein, and are not limited to those disclosed in the embodiments.

Claims (8)

  1. 一种摩擦式变矩器,其特征在于包括内环、大滚柱及外环,其中:A friction torque converter includes an inner ring, a large roller and an outer ring, wherein:
    内环,其为输入单元,内环周侧环面上均分设有至少两个凹形槽,每个凹形槽分别对应一个大滚柱;The inner ring, which is an input unit, is provided with at least two concave grooves on the inner ring side ring surface, and each concave groove corresponds to one large roller;
    外环,其为输出单元,外环套在内环外并与内环同轴布设,外环的内侧圆周面形成外环内滚道并与各滚柱压切配合;The outer ring is an output unit, and the outer ring sleeve is disposed outside the inner ring and coaxially disposed with the inner ring, and the inner circumferential surface of the outer ring forms an inner ring inner raceway and is press-fitted with each roller;
    大滚柱,其设置于内、外环之间,相邻凹形槽内的大滚柱之间具有间隙;a large roller disposed between the inner and outer rings and having a gap between the large rollers in the adjacent concave grooves;
    转速和负载发生变化时,各滚柱在离心力和内环的共同作用下实现自适应工作,同时通过内环与滚柱、滚柱与外环之间的机械摩擦传动,实现自动闭锁输出、自动变速和变矩。When the speed and load change, each roller realizes adaptive operation under the action of centrifugal force and inner ring, and realizes automatic blocking output and automatic through mechanical friction transmission between inner ring and roller, roller and outer ring. Variable speed and torque.
  2. 根据权利要求1所述的摩擦式变矩器,其特征在于:摩擦式变矩器的内环作用在大滚柱的力传递到外环,此时,作用力发生变化,同时,力臂变长,其公式如下:The friction torque converter according to claim 1, wherein the inner ring of the friction torque converter transmits the force of the large roller to the outer ring, and at this time, the force changes, and at the same time, the force arm changes. Long, its formula is as follows:
    扭矩公式:T=F·L;Torque formula: T=F·L;
    Figure PCTCN2016109207-appb-100001
    Figure PCTCN2016109207-appb-100001
    Figure PCTCN2016109207-appb-100002
    Figure PCTCN2016109207-appb-100002
    其中:among them:
    T为扭矩;T is the torque;
    F为驱动旋转的力;F is the force that drives the rotation;
    L为力臂;L is the force arm;
    FX为单个滚柱与外环内滚道的切向力;F X is the tangential force of the single roller and the inner race of the outer ring;
    FY为单个滚柱与外环内滚道的径向力; F Y is the radial force of the single roller and the inner race of the outer ring;
    F为大滚柱的离心力;F is the centrifugal force of the large roller;
    α为内环和对应的大滚柱压力角;α is the inner ring and the corresponding large roller pressure angle;
    m为大滚柱质量;m is the mass of the large roller;
    v为大滚柱相对外环内滚道的线速度;v is the linear velocity of the large roller relative to the inner race of the outer ring;
    r为外环内滚道的半径;r is the radius of the inner race of the outer ring;
    摩擦式变矩器的变矩是由力臂、压力角α以及大滚柱的离心力共同决定。The torque of the friction torque converter is determined by the force arm, the pressure angle α, and the centrifugal force of the large roller.
  3. 根据权利要求1所述的摩擦式变矩器,其特征在于:摩擦式变矩器的转速达到一定速度且负载较小时,各滚柱在静摩擦的作用下内环转动和外环连接成一体,变矩器闭锁输出,内环转速n1=外环n2;当负载继续增大到一定程度时,外环的速度n2降低,各滚柱与外环相对运动,处于打滑状态,n1>n2,此时各滚柱在内环的作用下,实现自动变速和变矩,以满足负载的要求;作用一段时间后,速度提升,负载减小,滚柱和外环之间由动摩擦自动切换为静摩擦,摩擦系数增加,内环、各滚柱和外环再次连接成一体n1=n2,变矩器重新自动闭锁输出。The friction torque converter according to claim 1, wherein when the rotational speed of the friction torque converter reaches a certain speed and the load is small, the inner ring rotates and the outer ring is integrated by the rollers under the action of static friction. The torque converter latches the output, the inner ring speed n 1 = the outer ring n 2 ; when the load continues to increase to a certain extent, the outer ring speed n 2 decreases, the rollers move relative to the outer ring, and are in a slipping state, n 1 >n 2 , at this time, each roller realizes automatic shifting and torque change under the action of the inner ring to meet the load requirements; after a period of time, the speed is increased, the load is reduced, and the dynamic friction between the roller and the outer ring Automatically switch to static friction, the friction coefficient increases, the inner ring, each roller and the outer ring are again connected into one body n 1 =n 2 , and the torque converter automatically locks the output again.
  4. 根据权利要求1至3之一所述的摩擦式变矩器,其特征在于:所述内环与滚柱形成压力角α,压力角α为12°~40°。The friction torque converter according to any one of claims 1 to 3, characterized in that the inner ring forms a pressure angle α with the roller, and the pressure angle α is 12° to 40°.
  5. 根据权利要求1至4之一所述的摩擦式变矩器,其特征在于:外环内滚道直径D与大滚柱直径d比值D/d=1.2~6,外环内滚道直径D与大滚柱直径d的比值D/d大小决定力臂L的长短变化。The friction torque converter according to any one of claims 1 to 4, characterized in that: the outer ring inner race diameter D and the large roller diameter d ratio D/d = 1.2 to 6, the outer ring inner race diameter D The ratio D/d of the diameter d of the large roller determines the length change of the arm L.
  6. 根据权利要求1至5之一所述的摩擦式变矩器,其特征在于:相邻大滚柱的间隙s>0.2mm。The friction torque converter according to any one of claims 1 to 5, characterized in that the gap s of adjacent large rollers is > 0.2 mm.
  7. 根据权利要求1至6之一所述的摩擦式变矩器,其特征在于:相邻大滚柱之间设有一个以上的小滚柱,各小滚柱直径小于大滚柱,小滚柱位于内环凹 形槽之间的内环圆周面上,小滚柱的外滚道面为外环内侧圆周面。The friction torque converter according to any one of claims 1 to 6, characterized in that: more than one small roller is arranged between adjacent large rollers, each small roller has a smaller diameter than the large roller, and the small roller Located in the inner ring On the inner circumferential surface of the groove, the outer raceway surface of the small roller is the inner circumferential surface of the outer ring.
  8. 根据权利要求7所述的摩擦式变矩器,其特征在于:相邻小滚柱之间及大滚柱与小滚柱的间隙s>0.2mm。 The friction torque converter according to claim 7, wherein a gap s between adjacent small rollers and between the large roller and the small roller is ">0.2 mm.
PCT/CN2016/109207 2015-12-11 2016-12-09 Friction type torque converter WO2017097254A1 (en)

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