CN2223381Y

CN2223381Y - Steel wire rope nonlinear high-elastic coupling of shaft

Info

Publication number: CN2223381Y
Application number: CN 95233515
Authority: CN
Inventors: 吕志强; 施引; 何琳; 余广平
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-29
Filing date: 1995-03-29
Publication date: 1996-03-27
Anticipated expiration: 2005-03-29

Abstract

The utility model provides a steel wire rope nonlinear highly elastic shaft coupling. The utility model is characterized in that inner and outer tooth slots are arranged on inner and outer hub wheels, each pair of inner and outer tooth slots are provided with steel cable groups which are composed of short, long and U-shaped steel cables, wherein, the short steel cables are arranged in the inner tooth slot, long steel cables are coated by the U-shaped steel cables and plugged on the inner bottom surface of the inner tooth slot, and the long steel cables and the U-shaped steel cables are spaced on the inner bottom surface. One end of the steel cable group is fixedly pressed by fixing blocks, and the other end is plugged in the inner tooth slot and blocked by the retainer rings of the inner hub wheels. The utility model can effectively lower the reaction force produced by the centering inaccuracy of shafting, effectively control resonance, and prolong service life.

Description

The non-linear highly elastic shaft coupling of wire rope

The utility model belongs to elastic coupling, says so in more detail to the improvement of reed-type elastic coupling.

Existing reed-type elastic coupling, the elastic element that connects between inside and outside hub wheel is a reed.And the reliability of this shaft coupling is decided by the fatigue life of reed, the general use just must be checked in 2 years comprehensively, when interior hub contacts with the spring ripple, axial and radial rigidity is zero, in case rigidity was very big when contact was gone up, when this both direction has big displacement response, will produce serious impact, can make the reed fracture.In use, improve working life, dispose the special-purpose lubricating oil circulatory system for guaranteeing reliability, thus its complex structure, the cost height.

The purpose of this utility model is in order to solve above-mentioned existing problems, to provide a kind of wire rope non-linear highly elastic shaft coupling.It is outside keeping advantages such as the big damping of reed-type elastic coupling, compact structure, noise be little, improve elasticity, the layout of wire rope makes all flexible effect of three directions of the inside and outside hub relative movement of shaft coupling, eliminate the reed-type elastic coupling radially, issuable impact during axial vibration, can increase simultaneously the gap of inside and outside hub, centering requirement when reducing the installation of driving shaft and driven shaft improves the maximum displacement that dynamic response allows.The vibrational energy that wire rope absorbs removes complicated cooling system by natural air cooled, improves working life, in the whole spreadable life, need not maintain and replace at shaft coupling.

In order to achieve the above object, hub wheel and coupling shaft in the utility model comprises, outer hub wheel and adpting flange, it is characterized in that outside interplanar distance is arranged with outer hub wheel block in the hub wheel and adpting flange, form outer teeth groove between every two adjacent outer hub wheel blocks, spacing is arranged with internal tooth on interior hub wheel and the coupling shaft, form internal spline between two internal tooths, internally every, the wire rope group is housed in the outer teeth groove, its end is pressed abd fixed in the outer teeth groove by the wire rope fixed block, the other end is inserted in the internal spline, and by the block of interior hub wheel back-up ring, each wire rope group is by strap, long wire rope and U-shaped wire rope constitute, and strap is located at outside the internal spline, long wire rope is coated by outer field U-shaped wire rope and is had the gap with the inner bottom surface of U-shaped wire rope, and U-shaped wire rope base part seat drops on the internal spline bottom surface.

The wire rope group can be radially or is axial arranged.

The interior shape of wire rope fixed block is the corresponding arc groove with wire rope.

Outer hub wheel and adpting flange are provided with radiation hole.

Advantage of the present utility model is: 1, connect by array wire rope group elasticity between the inside and outside hub wheel, wire rope group one end is rigidly fixed in the outer teeth groove; The other end elasticity is inserted in the internal spline, cover wire rope at internal spline is " U " shape, thereby can produce the radial elastic power effect of internal hub wheel, axial elasticity power makes wire rope bending deflection by interior hub wheel back-up ring and produces, and the transmission of same moment also is to be realized by the elastic force that internal spline produces the wire rope distortion.When being out of shape, wire rope not only to produce elastic reactance, in while every wire rope, and all to produce relative movement between the wire rope, this makes when shafting vibration the dry friction by the relative movement of saying above absorb vibrational energy, and this damping function increases with the increase of vibration, thereby can effectively control resonance; 2, select for use the stainless steel wire rope as elastic element, its fatigue life, it also had corrosion-resistant far above reed, and performance is constant when temperature reaches 270 ℃, long service life; 3, because its resistance to high temperature, simultaneously between each wire rope unlike spring sheet fit so tight, natural air cooled just much of that by radiation hole; 4, owing to the effect of wire rope group, the energy-conservation reaction force that reduces axle and the inaccurate generation of axle centering effectively of shaft coupling improves maximum value and operating time that the radial and axial vibration displacement response allows simultaneously.In the process of carry-over moment, do not produce axially, additional forces radially.

Fig. 1 is that master of the present utility model looks and partly cuts open figure.

Fig. 2 is that partial sectional view is looked on a left side of the present utility model.

Fig. 3 is the axial arranged partial sectional view of wire rope of the present utility model.

Fig. 4 is A-A sectional view.

(1) interior hub wheel and coupling shaft; (2) protective cover plate; (3) wire rope fixed block; (4) screw; (5) wire rope group; (6) outer hub wheel and adpting flange; (7) wire rope fixed block mounting screw; (8) outer hub wheel block; (9) outer hub wheel block construction bolt; (10) interior hub wheel back-up ring; (11) interior hub wheel back-up ring mounting screw; (12), (13) radiation hole; (14) outer teeth groove; (15) internal tooth; (16) internal spline; (17) strap; (18) long wire rope; (19) U-shaped wire rope; (20) axial stop; (21) radial stop.

Referring to Fig. 1, Fig. 2, outer hub wheel and adpting flange (6) are gone up spacing and are fixed with outer hub wheel block (8), form outer teeth groove (14) between per two.Internal tooth (15) is arranged on interior hub wheel and the coupling shaft (1), form internal spline (16) between two internal tooths (15).Adorn one group of wire rope group (5) (selecting the stainless steel wire rope for use) a pair of in by inside and outside teeth groove (16), (14) formed cavity.Wire rope group (5) is made of weak point, length and U-shaped wire rope (17), (18), (19), closely be fitted on the inwall of outer teeth groove (14) by the formed one group of wire rope group of above-mentioned wire rope (5) top, the wire rope of fitting with inwall is strap (17), and its length weak point can not reach in the internal spline (16).Long wire rope (18) is coated by outer field U-shaped wire rope (19), and its lower end and U-shaped wire rope (19) inner bottom surface leave certain interval, can produce the radial elastic power of internal hub wheel and coupling shaft (1) like this.The interior shape of wire rope fixed block (3) is and the corresponding arc groove of wire rope shape that wire rope fixed block (3) is fixed wire rope group (5) with wire rope fixed block mounting screw (7).Interior hub wheel back-up ring (10) is fixing with wire rope group (5) bottom block by interior hub wheel back-up ring mounting screw (11).

When interior hub wheel and coupling shaft (1) with outside hub wheel and adpting flange (6) when relatively rotating, the long wire rope (18), the U-shaped wire rope (19) that then are inserted in the internal spline (16) will produce bending deflection, the size of its amount of deformation is decided by the size of carry-over moment, carry-over moment is big more, and then distortion is big more.Simultaneously, be in the outer strap (17) of internal spline (16) and also will produce distortion.When axle system produces torsional vibration, will produce relative movement between the wire rope, absorb vibrational energy thereby produce damping function, and this damping function increases with the increase of vibration, thereby can control vibration and resonance effectively.

The performance of shaft coupling is by the diameter of the wire rope of selecting for use, and the radical of wire rope and the free length of wire rope decide in each group.

The static state of inside and outside hub wheel install allow radially, axial deviation, can determine by the permitted value that causes the wire rope reaction force by it.This point can be by selecting for use wire rope (5) and cooperating of interior hub wheel to decide, and its limiting value is that wire rope group (5) does not skid off from interior hub wheel groove when guaranteeing that the relative movement of inside and outside hub wheel dynamic response reaches maximum value.Greatest axis, radial displacement and drift angle that shaft coupling dynamically allows are by δ ₁, δ ₂Decision.

Referring to Fig. 3, Fig. 4,, wire rope group (5) can be arranged vertically in order to reduce the radial dimension of shaft coupling.

Claims

1, the non-linear highly elastic shaft coupling of a kind of wire rope, hub wheel and coupling shaft (1) in it comprises, outer hub wheel and adpting flange (6), it is characterized in that hub wheel and the interior interplanar distance of adpting flange (6) are arranged with outer hub wheel block (8) outside, form outer teeth groove (14) between every two adjacent outer hub wheel blocks (8), interior hub wheel and coupling shaft (1) are gone up spacing and are arranged with internal tooth (15), form internal spline (16) between two internal tooths (15), internally every, outer teeth groove (16), (14) in, wire rope group (5) is housed, and its end is pressed abd fixed in the outer teeth groove (14) by wire rope fixed block (3); The other end is inserted in the internal spline (16), and by interior hub wheel back-up ring (10) block, each wire rope group (5) is made of strap (17), long wire rope (18) and U-shaped wire rope (19), strap (17) is located at outside the internal spline (16), long wire rope (18) is coated by outer field U-shaped wire rope (19) and is had the gap with the inner bottom surface of U-shaped wire rope (19), and U-shaped wire rope (19) base part seat drops on the bottom surface of internal spline (16).

2, the non-linear highly elastic shaft coupling of wire rope according to claim 1 is characterized in that wire rope group (5) can be radially or axial arranged.

3, the non-linear highly elastic shaft coupling of wire rope according to claim 1 and 2, the interior shape that it is characterized in that wire rope fixed block (3) are and the corresponding arc groove of the shape of wire rope.

4, the non-linear highly elastic shaft coupling of wire rope according to claim 1 is characterized in that hub wheel and adpting flange (6) are provided with radiation hole (12), (13) outside.