CN2218851Y - Non-linear high elastic coupling for steel cable - Google Patents

Abstract

The utility model provides a non-linear high elastic coupling for steel cables, comprising left-right wheel hubs. The utility model is characterized in that the elastic elements arranged in circular permutation between the left-right wheel hubs are steel cables which are U-shaped, and the two ends of the steel cable are respectively plugged in the slots of the left-right wheel hubs and fixed by steel cable mounting blocks. The utility model requires shaft couplings whose external dimension has only a plurality of specifications, which can satisfy the product requirement with a very large range of force moment. The non-linear high elastic coupling for steel cable has the low requirement of mounting accuracy, good anti-vibration performance, high shock-resistance ability, long service life, no maintenance, etc.

Description

The non-linear highly elastic shaft coupling of wire rope

The utility model belongs to elastic coupling, is the improvement to existing elastic coupling.

The elastic element of existing elastic coupling adopts spring, spring sheet and rubber etc. more.The elastic coupling ubiquity of said structure form some shortcoming: 1, require to have higher installation precision, thereby the technical ability to the workman requires when installing or keep in repair high; 2, anti-vibration performance and shock resistance are lower, and working life is short; 3, for the shaft coupling of the different rated moment of output, its structure installation dimension is different, thereby need make series product, satisfies the requirement of different rated moments.The quantity that certainly will cause series product like this is very big, and its drawback is apparent.

The purpose of this utility model is in order to solve the problem of above-mentioned existence, to provide a kind of wire rope non-linear highly elastic shaft coupling.Characteristics such as it can realize making several outside shaft couplings that connect specification, just can satisfy the requirement of whole series product to the moment scope, and also have long service life, and installation precision requires low, in use need not maintenance, and cost is low.

In order to achieve the above object, the utility model comprises left wheel hub, right wheel hub, the elastic element that it is characterized in that being connected circumferential arrangement between left wheel hub, the right wheel hub is a wire rope, this wire rope is " U " shape, the two ends of wire rope are inserted into respectively in the groove of left wheel hub, right wheel hub, fix with the wire rope mounting blocks.

The radical of the wire rope of each circumference is an even number, and the steel wire rotation direction of two adjacent wire rope is opposite.

In order to change the carry-over moment of shaft coupling, can realize that the number of plies of wire rope is between 1～20 layer by the number of plies that changes wire rope.

The free length L scope of wire rope exists $\frac{1}{2}\mathrm{\πD}\≤L\≤5\mathrm{\π}\frac{D}{2}$ (D is the gap of two wheel hubs).

On protection apron, be provided with radiation hole.

The utlity model has following advantage: 1, this shaft coupling just can satisfy the series product requirement of a very big moment scope, its economic benefit, obvious social benefit by several different profile installation dimensions; 2, show by experiment at its reaction force of initial stage of distortion little, thereby it installation precision is required low, so can demonstrate fully the elastic coupling compensating action inaccurate to shafting alignment; 3, anti-vibration performance is good, and shock resistance is high and corrosion-resistant, high temperature resistant, stable performance; 4, long service life, and in use need not maintain, very high Economy had.

Fig. 1 is a main half-sectional view of the present utility model.

Fig. 2 is a left view of the present utility model.

Fig. 3 is the partial view that multilayer is counted wire rope.

Fig. 4 is the load characteristic curve figure of experiment.

(1) left wheel hub; (2) protection apron; (3) wire rope mounting blocks; (4) wire rope; (5), (6) set screw; (7) right wheel hub; (8) radiation hole; (9) set screw.

Referring to Fig. 1, Fig. 2, circumference one circle is equipped with several wire rope (4) (material of wire rope (4) is preferably the stainless steel wire rope) between left and right wheel hub (1), (7), this wire rope (4) is " U " shape, it is inserted in the groove of left and right wheel hub (1), (7), buckle wire rope mounting blocks (3) then, use set screw (9) fixing again.The wire rope of each circle (4) group is an even number, and adjacent two Hand of spiral is different.So no matter to be clockwise or counterclockwise opplied moment, theoretically, the shaft coupling externally load characteristic curve of performance is the same.Under the constant condition of left and right wheel hub (1), (7) physical dimension,, can realize above purpose by the free length that changes wire rope (4), the radical or the number of plies that each is all in order to change the carry-over moment of shaft coupling.Every spacing of wire rope (4) is generally in the scope greater than 1 times of rope footpath.

When left wheel hub (1) opplied moment, left wheel hub (1) will have certain angle of yaw with respect to right wheel hub (7), wire rope this moment (4) will produce and reverse and crooked composite deformation, thereby produces the right wheel hub (7) of elastic reactance effect, thereby has realized the elasticity transmission of moment.

Referring to Fig. 3, in order to make left and right wheel hub (1), (7) of same dimensional structure, satisfy the requirement of different output torques, can realize that Fig. 3 increases the structural type of wire rope (4) number of plies exactly by the number of plies that increases wire rope (4).Its every interlamellar spacing should be about 3 times of rope footpaths.

Referring to Fig. 4, show that by experiment its part throttle characteristics is the nonlinear characteristics of hard elastics.Promptly its reaction force of initial stage in distortion is little, thereby it requires low to installation precision.Equally, can be not destroyed after it was worked under resonance state 45 minutes and keep performance constant, thereby at left and right wheel hub (1), (7) but long-term work when big dynamic deviation is arranged.

Claims (5)

1, the non-linear highly elastic shaft coupling of a kind of wire rope, it comprises left wheel hub (1), right wheel hub (7), the elastic element that it is characterized in that being connected circumferential arrangement between left wheel hub (1), the right wheel hub (7) is wire rope (4), this wire rope (4) is " U " shape, the two ends of wire rope (4) are inserted into respectively in the groove of left wheel hub (1), right wheel hub (7), and are fixing with wire rope mounting blocks (3).

2, the non-linear highly elastic shaft coupling of wire rope according to claim 1 is characterized in that the radical of the wire rope (4) of each circumference is an even number, and the steel wire rotation direction of adjacent two wire rope (4) is opposite.

3, the non-linear highly elastic shaft coupling of wire rope according to claim 1 and 2, the number of plies that it is characterized in that wire rope (4) is between 1～20 layer.

4, the non-linear highly elastic shaft coupling of wire rope according to claim 1 is characterized in that the free length L scope of wire rope (4) exists $\frac{1}{2}\mathrm{\πD}\≤l\≤5\mathrm{\π}\frac{D}{2}$ 。

5, the non-linear highly elastic shaft coupling of wire rope according to claim 1 is characterized in that being provided with radiation hole (8) on protection apron (2).