SU855279A1

SU855279A1 - Hydrodynamic clutch

Info

Publication number: SU855279A1
Application number: SU792808644A
Authority: SU
Inventors: Евгений Григорьевич Самарин; Петр Алексеевич Грымзин; Светлана Руслановна Коновалова
Original assignee: Предприятие П/Я А-7701
Priority date: 1979-08-15
Filing date: 1979-08-15
Publication date: 1981-08-15

Description

(54) ГВДРОДИНАМИЧЕСКАЯ МУФТА(54) GVDRODYNAMIC COUPLING

II

Изобретение относитс к машиностроению и предназначено дл привода вспомогательных агрегатов транспортных средств.The invention relates to mechanical engineering and is intended to drive auxiliary units of vehicles.

Известна пщродинамическа муфта, содержаща кожух, турбинное и насосное колеса, и пружины, через которые передаетс вращающий момент .A known microdynamic clutch comprising a housing, turbine and pump wheels, and springs through which torque is transmitted.

Недостатком этой муфты вл етс больша инерционность регулировки вращающегос момента.The disadvantage of this coupling is the large inertia of the adjustment of the torque.

Наиболее близким к изобретению по технической сущности вл етс гидродинамическа муфта, содержаща соединенные с кожухом насосное колесо и расположенное в этом кожухе турбинное колесо с поворотньми вокруг осей, параллельных оси муфты, лопатками 2,The closest to the invention to the technical essence is a hydrodynamic coupling comprising a pumping wheel connected to the casing and a turbine wheel located in the casing with rotatable axes parallel to the axis of the coupling, blades 2,

Однако узкий диапазон регулировки j вращающего момента ограничивает эксплуатационные возможности муфты.However, the narrow range of adjustment of torque j limits the operational capabilities of the coupling.

Цель изобретени - расширение эксплуатационных возможностей муфтыThe purpose of the invention is to expand the operational capabilities of the coupling.

путем расширени диапазона регулировани вращающегос момента.by expanding the range of torque control.

С этой целью муфта снабжена пружинами и упорами дл ограничени поворота лопаток, пружинь закреплены одним концом на колесе, другим - на оси, при этом оси поворота лопаток проход т через центр т жести лопаток.For this purpose, the coupling is provided with springs and stops to limit the rotation of the blades, the springs are fixed at one end on the wheel, and the other on the axis, with the axis of rotation of the blades passing through the center of gravity of the blades.

На фиг. I изображена предлагаема муфта, осо.вой разрез; на фиг. 2 - вча А на фиг. 1; на фиг. 3 - схема воздействи сил на лопатку; на фиг. 4 графики изменени коэффициента мощности гидромуфты в зависимости от передаточного отношени .FIG. I shows the proposed coupling, a special cut; in fig. 2 - ICA A in FIG. one; in fig. 3 - diagram of the impact forces on the blade; in fig. 4 graphs of the power coupling variation of the fluid coupling versus the gear ratio.

Claims

The fluid coupling contains a pumping wheel 1, a casing 2 connected to it and a turbine wheel consisting of a shaft with a flange 3 and rotating blades 4. On the axis x 5 of the blades there are springs 6 springs fixed at one end on flange-3 with screws 7 and on the axis, wherein the axis of rotation of the blades passes through the center of the body of the blade. The blades under the action of the spring are pressed against the stops 3 with some preload. Hydrocoupling works as follows. The moment at nominal slip is transmitted by the hydraulic clutch due to the preliminary tension of the blades of the turbine wheel. As the load increases, the turbine blades begin to rotate due to the difference in forces P and P. This leads to a relative decrease in energy intensity and an increase in slip in the hydraulic coupling, i.e. The fluid coupling limits the torque transmitted by the rotation. The limit of adjustment occurs when the blades are perpendicular to the radius of the turbine wheel and their further rotation is impossible. The moment transmitted by the clutch in this case is minimal. FIG. 4 denotes: - power factor calculated by the formula: yy (o, where V (- capacity on the pumping wheel hp; T - oil specific gravity, mc / DCJ- active diameter of the hydraulic coupling, m D (- rotation speed pumping gear; gm. gear ratio of hydraulic clutch, ip j, where rotation speed of the turbine wheel; curve 1 - experimental characteristic of a known clutch, curve 2 - characteristic of the proposed clutch, curve 3 - the limiting power factor limited by the transmitted moment; Qj - adjustment range proposed hydraulic clutch; 0 adjustment range As seen in Fig. 4, the proposed clutch has an adjustment range 1.8-1.9 times greater than that of the known one. Extending the range of adjustment of the hydraulic coupling better protects the drive from power and kinematic overloads, allows to increase the service life of auxiliary units, reduce their overall dimensions, etc. Formula of the invention Hydrodynamic coupling comprising a pumping wheel connected to the casing and a turbine wheel located in this casing with rotary axes parallel to the axis of the coupling, blades, In order to expand operational capabilities by expanding the torque control range, the coupling is provided with springs and stops to limit the rotation of the blades, the springs are fixed at one end on the wheel and the other on the axis, while the axis of rotation of the blades . Sources of information taken into account in the examination 1. USSR author's certificate number 725007, cl. F 16 O 33/08, 1974.,

2. USSR author's certificate for application No. 2729228 / 25-27, cl. F 16 D 33/04, 02.26.79.