CN2113376U

CN2113376U - Flexible part coupling

Info

Publication number: CN2113376U
Application number: CN92202400U
Authority: CN
Inventors: 雷良榆
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-02-15
Filing date: 1992-02-15
Publication date: 1992-08-19

Abstract

The utility model relates to a flexible part coupling, which belongs to the field of mechanism. The utility model is characterized in that various flexible parts (such as a spun yarn, a steel wire, a belt, a chain, a thin wall metal strap, etc.) are used as the elastic drive elements of the coupling, and are wound on each mutually paralleled pin shaft of the specific internal and the external cardos; the effective and reliable elastic coupling is formed. With simple and compact structure, big transmission capability, light weight, smoothness, reliability, insensitivity to the manufacturing errors, low cost, good damping effect, easy production and use, the utility model is allowed large relativity shift of the axial line of the two axes when installed, and can also made to standardized component to be used widely in various transmission apparatus.

Description

Flexible part coupling

This device belongs to mechanical field.

Elastic coupling flexible coupling is used very wide in mechanical transmission, and its structural type is also varied, all is as its elastic element at present with rubber, plastics, dowel, various metal spring or pneumatic spring etc.

Wherein dowel, plastics, rubber element intensity are relatively low, and the steel spring strength is higher, but generally complicated as the coupler structure of elastic element.Take the tire formula coupling of pneumatic spring that good elasticity and flexible is arranged, but must guarantee the sealing of inflation back, and air tyre itself is also relatively heavy, cost is higher.Another kind of coupling with the rubber-coated rubber-metal ring of enclose inside wire rope as transmission component.Intensity height but weight is big is made more complicated, and price is also high.

The purpose of present technique is: introduce various flexible elements, as high intensity line, rope, steel wire, plastics or rubber tape, Transmitted chains or special chain, thin-wall metal band etc., as its transmission elastic element.With specific structure form that a class is in light weight, simple and reliable, bearing capacity is big, coupling with good amount of deflection, elasticity and damping effect.

The feature of this device is: its flexible element is closed ring, be easy to bending, on each corresponding parallel bearing pin of the inside and outside shaft coupling of arranged concentric, inside and outside coupling relative angular displacement during stand under load, flexible element is strained automatically, acted on transient equiliblium and the effectively reliable resilient connection of flexible centrifugal inertia force formation and transmission garden Zhou Li in addition when turning round.

This device has two kinds of slightly different patterns on the structure.Belt material cover not on the pin of the 1st kind of coupling wherein.Then be with anti-friction bush on the 2nd kind of coupling bearing pin.Shown in Fig. 1 cross section A-A Fig. 2 .a, Fig. 2 .b.

Fig. 1, Fig. 2.The part of each label of a is:

1---flexible element; 2---outer shaft coupling; 3---bearing pin; 4---nut; 5---interior shaft coupling; 6---the shelves ring; 7---the shelves circular nut; 8---anti-friction bush.

Fig. 1 is its structure sectional view, wherein outer shaft coupling 2 and interior coupling 5 respectively with the two ends propeller shaft couplings.The quantity of inside and outside shaft coupling upper pin 3 is identical.Respectively on the end face with fastening inside and outside shaft couplings such as nuts 4, evenly distributed around the garden week separately, parallel each other, arranged concentric, and fixedly pack into the separately end face of bearing pin of inside and outside joint is positioned on the same plane, the same side.Wherein outer shaft coupling 2 upper pin distribution gardens week, diameter was than the periphery that is positioned at each corresponding bearing pin on the shaft coupling 5 greatly.Flexible element 1 promptly successively flex housing on inside and outside each corresponding bearing pin.Its arranged mode is shown in Fig. 1 section B-B and Fig. 2 .a.Flexible element is inserted in from bearing pin one end during assembling.And then with the shelves ring be contained in bearing pin one end with bearing pin nut 7 fastening prevent flexible element along bearing pin to shifting out.Shown in Fig. 1 cross section A-A.

Fig. 2 .a and Fig. 2. on each bearing pin of the 2nd kind of coupling of b anti-friction bush 8 is housed.Bearing pin quantity is more less slightly than corresponding the 1st kind of coupling.

The flexible element of these two kinds of structures all can be taked different materials, comprise that there is rubber tape, belt, plastic tape, Transmitted chains or special chain and thin-walled steel band or other thin-wall metal bands of high-order tensile strength cord floor high-intensity line, rope, steel wire, inside, various silk braids.

For the circumferential lengths of the flexible element on every cover coupling,, make very loosely to be easy to overlap on above-mentioned each bearing pin all greater than when assembling necessary total length when each corresponding bearing pin of cover.And make suitable space is arranged between bearing pin and the flexible element.Shown in Fig. 1, B-B section and Fig. 2 .a.

Situation in Fig. 2 .b presentation graphs 2.a structure transmission running.At this moment under the driving torque effect, inside and outside shaft coupling and bearing pin relative angular displacement thereof.Make the also respective change of bearing pin relative distance on the inside and outside shaft coupling.Flexible element is tightened up.Produce tensile stress.Act in the running simultaneously and also have centrifugal inertia force between corresponding two bearing pins on the flexible element, also impel the flexible element tension and along the bending of centrifugal force direction, the two component tangentially then balances each other with the garden Zhou Li of transmission.Shown in the arrow among Fig. 2 .b.This dynamic constrained elastic system.When load and change in rotational speed, has the favorable damping effect.This is one of major advantage of this device.

The elastic element of this device has only an endless loops flexible element.Can make series standard spare.Other have only inside and outside shaft coupling and bearing pin thereof, shelves ring, nut.Design of part is simple, low to not high, the easy processing of required precision, cost, be convenient to assemble and the replacing of flexible element, do not need lubricating maintenance.

This device also has some main advantages to be, because the structural configuration compactness.Can arrange a lot of bearing pins respectively on the inside and outside shaft coupling.Correspondingly acting on each load to corresponding bearing pin and flexible element thereof reduces greatly.Its transmission capacity is increased.Durable reliable.The amount of deflection and the elasticity that had both had conventional tyre formula and air tyre formula coupling height, allowing to connect diaxon has big skew.Transmission capacity than the then big 2-3 of unidimensional above-mentioned coupling doubly.Size, weight are corresponding wants little by 1/2～1/3.

Below be an embodiment's of this device major parameter:

Pattern: flexible belt coupling.

The flexible belt structural material: the cross section be flat, center partly, be cord reinforcement rubber tape.Be closed ring.

Flexible belt sectional dimension: wide 30 millimeters, thick 4 millimeters.

The all diameters in interior shaft coupling bearing pin quantity and distribution garden thereof: 8 are distributed in 65 millimeters gardens of φ on week.

The all diameters in outer shaft coupling bearing pin quantity and distribution garden thereof: 8 are distributed in 100 millimeters gardens of φ on week.

Driving torque: 10,4 kilogram-metres

Rotating speed: 1460 rev/mins

Power: 15 kilowatts

Two shaft centre lines allow relative radial deflection amount: 1.2 millimeters

Axial offset: 2.2 millimeters

Intersect augular offset: ± 3 °

Boundary dimension, (length * wide * height) 150 * 140 * 140 millimeters

Weight: 6.5 kilograms

Above parameter and some common elastic coupling flexible couplings of rubber parts of taking are compared, and under same size condition, transmission power increases by 1/2 to 1 times.Under same transmission power condition, boundary dimension is approximately little by 1/3～1/2.Weight reduces over half approximately.Allow diaxon by pretending to deviation then much larger than common general elastic coupling flexible coupling.

This device can be used as standardization, seriation, general-purpose product, is widely used in every field such as machinery, chemical industry electrician transmission, agricultural machinery, traffic lifting transportation, metallurgical machinery.

Claims

1, a class flexible element coupling, feature is made up of outer shaft coupling, interior shaft coupling, bearing pin, anti-friction bush, shelves ring and fastening piece thereof, inside and outside shaft coupling end face is respectively along the identical bearing pin of garden Zhou Junbu fixed qty, and flexible element is crooked successively on each corresponding parallel bearing pin of inside and outside shaft coupling of arranged concentric.

2, coupling according to claim 1, feature are that fixedly pack into the separately end face of bearing pin of inside and outside shaft coupling is positioned on the same plane, the same side, and wherein outer shaft coupling upper pin distribution diameter is positioned at the shaft coupling periphery in each corresponding bearing pin distribution garden week more greatly.

3, coupling according to claim 1, feature are that flexible element is a closed ring, and its structural material refers to following in several any, that is:

Line, rope, steel wire, rubber tape, plastic tape, belt, chain, thin-wall metal band with cord floor, various silk braids.