CN2122968U - Porous ladder-shape elastic element - Google Patents

Abstract

The utility model relates to a porous trapezoid elastic element, which can be used for multiple elastic block couplings. The utility model has reasonable structure and good performance, which can satisfy the requirement of transmitting heavy load torque, and the service life can reach more than ten million compressing passes. The utility model is characterized in that the section on the elastic element to a stress direction is a trapezoid, the section vertical to the stress direction is a circle, square or a rectangle, and the section is provided with a set of (at least one) through openings for heat radiation.

Description

Porous ladder-shape elastic element

The utility model relates to a kind of porous ladder-shaped elastic element, can be used for making coupling can satisfy the requirement of transmitting large torque on polytype elastomer block coupling.The long enough in working life of elastic element.

On the existing elastic coupling flexible coupling with many elastic elements, using the elastic element of multiple structure at home and abroad.What adopt as the safety shaft coupling with rubber-elasticity for heavy torque of China is fan-shaped elastic rubber element (Chinese patent 85101485.2).This kind element is fan-shaped in the cross section parallel with being subjected to power transmitting.This sector structure increases rubber element Mould Machining difficulty, and manufacture cost rises.The stressed cross section of fan-shaped elastic element is a garden annular, and the center has only an endoporus, and the heat exchange contact area of rubber and air is little.The straight-through half garden groove that hot air in the endoporus can only be offered from the elements on either side plane is got rid of.In the running, when fan-shaped rubber element stress deformation, this half garden groove can diminish even be stopped up by rubber deformation gradually, causes result of ventilating heat dissipation not good, and rubber element so temperature rise, and quickens ageing of rubber, reduces elastic element working life.In addition, the edge, location of fan-shaped elastic rubber element is " protruding " word shape, makes mould processing technology bad.The elastic element that Germany Cardeflex heavy duty elastic coupling flexible coupling uses is garden cylindricality metal spring (B. P. 771034).When rotation relatively takes place in two half-couplings, uneven relative compressive strain will take place (on the coupling radial direction in the interior outside of cylindricality elastic element, a side decrement near apart from shaft axis is big, a side decrement far away is little), cause the cylindricality metal spring accident that fractures in early days, manufacturing mechanism effective operation rate is reduced.Use a kind of solid square sectional elastic element (Russian Patent 823690) on the block rubber elastic coupling flexible coupling of the Soviet Union.There is the serious deformation inequality in it in the running, does not have the heat radiation duct again, and elastic element is short working life.The niggerhead element (Russian Patent 826120) that uses on the another kind of coupling of the Soviet Union, though on the power transmission direction, be wedge shape section, but the line stretcher on these wedge shape both sides is the axis by coupling not, so elastomer block relative compressive strain at each position on the coupling radial direction is still uneven.Solid construction does not have rational deformation space and reserves, and it is bad to dispel the heat, and working life is short.The elastic coupling flexible coupling of the U.S. has adopted dolioform rubber roller elastic element (U. S. Patent 3729953).France's elastic coupling flexible coupling uses spherical rubber elastic element (F.P. 2246175).There is identical shortcoming in these two kinds of elastic elements in the coupling running: each one of element is inhomogeneous compressive strain, solid construction heat radiation difficulty, thereby rated torque is little, working life is short.Lasso formula rubber elastic element (Chinese Industrial Standards (CIS) GB4323-84), the quincunx rubber elements (Chinese Industrial Standards (CIS) GB5272-85) etc. in addition that on elastic coupling flexible coupling, use in a large number both at home and abroad, they can not use on heavily loaded elastic coupling flexible coupling, can not adapt to the requirement of transmitting huge moment of torsion.

The purpose of this utility model is: propose that a kind of relatively compressive strain evenly in the power transmission process, excellent in heat dissipation effect, long service life, technology capability is good and can transmit the New Elastic Component on Cool of huge moment of torsion, for polytype elastomer block coupling use.

The utility model is to realize like this.Cross section with stressed Vertical direction on elastic element is garden shape (or square, rectangular).Have one group (minimum is one) reasonable heat dissipation ventilation that distributes on this cross section and use the duct, this duct connects stressed surface, elastic element both sides mutually, causes the heat of being given birth in the component body that enough heat exchange areas that contacts with air are arranged.Hot air in elastic element compressive strain process by coupling on corresponding passage discharge.This elastic element has adopted the trapezium structure that distributes by coupling garden week in the power transmission direction.These two trapezoidal waist limit line stretchers have guaranteed that by the shaft axis of coupling the elastic element each several part has identical relative compress variation all the time in the power transmission process.The outer rim place of (or square, rectangular planes) on shape plane, garden, elastic element both sides is provided with the garden week shape that keeps the elastic element deformation space (or tetragonality, rectangular property) chimb.Adjust elastomeric material formulation, can make element obtain the different-stiffness characteristic.To the elastic element of different qualities and function, have monochrome or colored appearance (or mark), be convenient to maintenance test in the running.

With reference to the accompanying drawings the utility model is described in detail.On the elastic element in the accompanying drawing, be garden shape 1(or square, rectangular 4) with the cross section of stressed F Vertical direction.The heat dissipation ventilation that has one group (minimum one) distribution rationally on this cross section is used duct 2.Duct 2 makes elastic element two stressed garden shape side 1(or square, rectangular side 4) connect mutually.The section A BCD parallel with being subjected to power transmitting is trapezoidal on the elastic element, and two waist limit AD that this is trapezoidal and the line stretcher of BC are by the axis centre O of coupling.Playing two stressed garden shape side 1(of shape element or square, rectangular side 4) the outer rim place be provided with the garden week shape chimb 3(that keeps the elastic element deformation space or square, rectangular chimb 5).

Adjust the proprietary formula composition of elastic material, the hardness range of the utility model porous ladder-shaped elastic element can be from Shao's formula 40 degree until Shao's formula 78 degree.The relative compressive strain scope that elastic element allows from 12% until 36%.The working life of elastic element that is the compression fatigue number of times that withstands shocks can be up to more than 10,000,000 passages.Elastic element be permanently deformed to 3%.

Compared with prior art, flexible member compression of the present utility model is even, and excellent in heat dissipation effect can be transmitted heavily loaded moment of torsion, has very long service life; Rational in infrastructure, processing technology is good, has reduced again the manufacturing expense of mould.

Claims (2)

1, a kind of porous ladder-shaped elastic element that is used on the elastic coupling flexible coupling is characterized in that: the section A BCD parallel with being subjected to power transmitting is trapezoidal on the elastic element, and two waist limit AD that this is trapezoidal and the line stretcher of BC are by the axis centre zero of coupling.The cross section vertical with being subjected to power transmitting is garden shape 1 (or square, rectangular 4) on the elastic element, has one group of (minimum one) duct 2 on this cross section, and duct 2 connects the two stressed sides 1 (or 4) that play the shape elements.

2, elastic element according to claim 1 is characterized in that: in garden, elastic element both sides shape plane 1(or square, rectangular planes 4) the outer rim place be provided with garden week shape chimb 3(or square, rectangular chimb 5).

Images