摘要:
To prevent undesirable displacement of the metal elements of a metal ring assembly of a continuously variable transmission in order to enhance the durability of the metal ring assembly, the metal elements are designed to meet the equation B/2=A+L and t=1.5A, where A is a distance between a rocking edge and a saddle surface of a metal element; B is a distance between the saddle surface and a lower end of a pulley abutment surface; L is a distance between the rocking edge and a frictional force application point of the pulley abutment surface; t is the thickness of the metal element; and the distances A and B are set so that a relation, 2≦B/A≦5, is established.
摘要翻译:为了防止无级变速器的金属环组件的金属元件的不期望的位移,以提高金属环组件的耐用性,金属元件被设计成满足等式B / 2 = A + L和t = 1.5 A,其中A是金属元件的摇摆边缘和鞍座表面之间的距离; B是鞍座表面与皮带轮邻接表面的下端之间的距离; L是摇摆边缘与滑轮抵接面的摩擦力施加点之间的距离; t是金属元素的厚度; 并且设定距离A和B,使得建立2 <= B / A <= 5的关系。
摘要:
In a metal belt-type continuously variable transmission, the radius of winding a metal belt around a drive pulley is increased to change the shift ratio i by applying a larger first axial thrust to the drive pulley and a smaller second axial thrust to a driven pulley during upshifting. In a region B where the relationship between a first axial thrust and the gear shifting speed dR/ds defined as a value obtained by differentiating the radius R of winding of the metal belt around the drive pulley by an amount s of tangential movement of the metal belt is maintained substantially linearly, the first axial thrust is subjected to a feedforward control based on a target gear shifting speed dR/ds. In regions A and C where the relationship between the first axial thrust and the gear shifting speed dR/ds is not maintained substantially linearly, the first axial thrust is subjected to a feedback control, so that the gear shifting speed dR/ds is equal to the target gear shifting speed dR/ds.
摘要:
Clearance Cs during a no-load stop and allowable value Cto of total clearance Ct obtained as a sum of clearance Ch occurring due to Hertzian stress are stipulated to a value less than height h of male coupling 28 along with an allowable value &sgr;hmo of the maximum Hertzian stress acting on rocking edge 26 being stipulated to a value less than an upper limit value &sgr;ho of the Hertzian stress that satisfies the opposing pitching lifespan. The radius of curvature R of the rocking edge is set within a range that satisfies R1≦R≦R2 for the radius of curvature R1 determined in correspondence with the allowable value &sgr;hmo of the maximum Hertzian stress and the radius of curvature R2 determined in correspondence with the allowable value Cto of the clearance between the total elements.
摘要翻译:在空载停止期间的间隙Cs和由于赫兹应力而产生的间隙之和所获得的总间隙Ct的允许值Cto被规定为小于公耦合器28的高度h的值以及最大值的允许值Σhmo 规定作用在摇摆边缘26上的赫兹应力小于满足相对俯仰寿命的赫兹应力的上限值sigmaho的值。 摇摆边缘的曲率半径R设定在对应于最大赫兹应力的允许值sigmahmo所确定的曲率半径R1的满足R1 <= R
摘要:
A metal V-belt type continuously variable transmission in which the length of a side of an element contacting with a V-face of a pulley is shortened to increase a ratio range. If the element side length of a metal element is represented by L, the angle of the V-face of the pulley is represented by .alpha., and the hertz surface pressure between the pulley and the metal element is represented by .sigma..sub.H, the following relation is established: L .varies. sin .alpha./.sigma..sub.H.sup.2. When the hertz surface pressure .sigma..sub.H is determined to be between an upper limit value defined by the wear durability of the metal element and a lower limit value defined by the limit tensile force of an endless belt, the element side length L can be decreased by decreasing the angle of the V-face of the pulley. Thus, the distance through which the metal element can be moved radially of the pulley is increased to increase the ratio range.
摘要:
In a metal V-belt type continuously variable transmission having a driving pulley and a driven pulley, the inclination angle .alpha. of a V-groove in the pulleys is set in a range represented by tan.sup.-1 .mu.a tan.sup.-1 .mu.s. If the transmittable torque Tin is increased, the tensile force of the endless belt is increased to produce slipping between the endless belt and the pulley. However, according to the present invention, by decreasing the inclination angle .alpha. to reduce the tensile force of the endless belt, the transmittable torque Tin can be increased while preventing slipping of the endless belt.
摘要翻译:在具有驱动滑轮和从动皮带轮的金属V型皮带型无级变速器中,将滑轮中的V形槽的倾斜角α设定在由tan-1 mu a tan-1μs表示的范围内。 如果可传递扭矩Tin增加,则环形带的张力增加,从而在环形带和带轮之间产生滑动。 然而,根据本发明,通过减小倾斜角α以减小环形带的张力,可以增加可传递扭矩Tin,同时防止环形带的滑动。
摘要:
In a gear pump in which a driving rotor that is driven by a driving source meshes with a driven rotor that is driven by the driving rotor for rotation to pump a hydraulic oil, only one of the driving rotor and the driven rotor is given the steam treatment while the other remains untreated.
摘要:
When a tangential friction force received by a pulley abutment surface 37 of a metal element 32 from a pulley is represented by FV; a radial distance from a point 45 of action of the tangential friction force to a rocking edge 40 located radially outside the friction force-acting point 45 is represented by L; a radially inward load received by the metal element 32 from a metal ring assembly 31 is represented by FL; and a thickness of the metal element 32 is represented by t, the radial distance L and the thickness t of the metal element are determined, so that a relation, L/t≦FL/2FV is established. Thus, even if a moment FV×L is applied to the metal element 32 by the tangential friction force FV, the moment FV×L can be canceled by a moment FL×(t/2) generated by a load FL for urging an edge a of a ring slot 35 by the metal ring assembly 31, thereby preventing the inclination of the metal element 32 to enhance the durability of the metal ring assembly.
摘要:
Disclosed is a metallic block for the detection of a force operating on a metallic V-belt. The metallic V-belt includes endless belt-like supporting straps and a multiplicity of metallic blocks supported along the straps. The V-belt passes around a driving pulley and a driven pulley. At least one of the multiplicity of metallic blocks comprises a notch formed in a part thereof, and a strain gauge attached to the notch. The strain gauge is intended to detect an external force applied to the metallic block. The force operating on the metallic V-belt is detected based on thus detected external force.
摘要:
A belt (metal V belt) has a number of elements held by a ring in an endless shape and aligned in a peripheral direction of the ring. The element includes a head portion, a neck portion and a body portion. The body portion has a V face brought into contact with a drive pulley and a driven pulley and left and right locking edge portions wrapped with the ring and disposed on an inner peripheral side of the ring. The head portion is disposed on an outer peripheral side of the ring and having an ear portion extended to left and to right sides to be opposed to the locking edge portion. The neck portion integrally connects the body portion and the head portion. Front faces of the ear portion, the neck portion and the locking edge portion of the element are formed with contact portions capable of bringing the contiguous elements into contact with each other.