CN102252034A

CN102252034A - Oldham coupling

Info

Publication number: CN102252034A
Application number: CN2011102083166A
Authority: CN
Inventors: 李正峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2011-11-23

Abstract

The invention discloses an Oldham coupling comprising a half coupling I, a half coupling II and an intermediate floating disc. The Oldham coupling is characterized in that the intermediate floating disc is formed by assembling a disc and tenons, the center of the disc is hollow, each tenon is a strip-shaped body with a rectangular section, the tenons are crossed and arranged on two end faces of the disc and are connected through bolts for an articulation hole, nuts and gaskets, the intermediate floating disc is arranged between the half coupling I and the half coupling II, the end faces of the half coupling I and the half coupling II are respectively provided with grooves, and the tenons on the two end faces of the disc respectively form clearance fit with the grooves on the end faces of the half coupling I and the half coupling II. The invention has the beneficial effects that: the tenons are changeable, thus the maintenance cost is saved; and the tenons and the disc are connected through the bolts for the articulation hole, and a limit torsion moment of the tenons and the disc can cut off the bolt for the articulation hole during overloading, thus a function of protecting the motor or important workpieces from being broken is realized.

Description

A kind of sliding cross coupling

Technical field

The present invention relates to a kind of sliding cross coupling, belong to the coupling technical field.

Background technique

Sliding cross coupling is a kind of of rigidity coupling.Allow diaxon to have radial and axial displacement and very little angular displacement.By two end faces have groove half-coupling and two ends form by the middle floating disc of tenon.The center line of middle floating disc two ends tenon is orthogonal, and adopts Spielpassung with the groove of two half-couplings respectively.During running, if two axial lines has relativity shift, the tenon on the middle floating disc both ends of the surface can produce slip in the groove of both sides half-coupling.After working long hours, tenon and groove produce wearing and tearing, behind the excesssive gap, will produce noise and vibration, cisco unity malfunction.The hardness of floating disc is a little less than half-coupling in the middle of general, and floating disc at first weares and teares and scraps in the middle of causing.In addition, existing sliding cross coupling does not have overload protection function, and machine is in case overload is easy to burn out motor.

Summary of the invention

The object of the invention provides a kind of improved sliding cross coupling at the defective of prior art.

The present invention adopts following technological scheme for achieving the above object:

A kind of sliding cross coupling, comprise the half-coupling I, the half-coupling II, middle floating disc, it is characterized in that: floating disc is by disk in the middle of described, tenon is assembled, in the middle of the described disk is hollow, described tenon is the bar shape of rectangular cross-section, on the both ends of the surface that are placed into disk with its criss-crossing, and with the articulation hole bolt, nut, packing ring couples together, middle floating disc is between described half-coupling I and half-coupling II, be respectively arranged with groove on described half-coupling I and the half-coupling II end face, the tenon of disk both ends of the surface respectively with described half-coupling I, groove on the half-coupling II end face forms Spielpassung.

It is further characterized in that: middle floating disc outer rim is provided with protective housing.

The invention has the beneficial effects as follows; because middle floating disc is combined by disk and two tenons; the wearing and tearing back is as long as change tenon; saved maintenance cost; tenon adopts articulation hole to be connected with bolt with disk again; its torque limit can be cut off articulation hole during overload with bolt, plays the not impaired effect of protection motor or important parts.

Description of drawings

Fig. 1 is a kind of sliding cross coupling structural representation of the present invention;

Fig. 2 is a floating disc worm's eye view in the middle of the present invention;

Fig. 3 is a floating disc plan view in the middle of the present invention;

Fig. 4 is a floating disc plan view in the middle of the present invention;

1, half-coupling I, 4, protective housing, 5, disk, 6, tenon, 7, the articulation hole bolt, 8, nut, 9, spring washer, 10, the half-coupling II.

Embodiment

As shown in Figures 1 to 4, a kind of sliding cross coupling, comprise half-coupling I 1, half-coupling II 10, middle floating disc, floating disc is by disk 5 in the middle of described, tenon 6 is assembled, in order to alleviate described disk 5 quality, the centre is processed into hollow, described tenon 6 is the bar shape of rectangular cross-section, on the both ends of the surface that are placed into disk 5 with its criss-crossing, then with articulation hole bolt 7, nut 8, spring washer 9 couples together, middle floating disc between half-coupling I 1 and half-coupling II 10, the tenon 6 of disk 5 both ends of the surface respectively with half-coupling I 1, groove on half-coupling II 10 end faces forms Spielpassung.

If two axis that connect have relativity shift, tenon 6 can produce in groove and slide, and after working long hours, tenon 6 and groove will produce wearing and tearing.Because tenon 6 is convenient to change, and cost is low, makes its hardness be lower than half-coupling material therefor hardness during making, like this tenon 6 will at first wear and tear bad, then with its replacing.Motor and driving component need not move axially when changing tenon 6, as long as turn on articulation hole bolt 7, nut 8, spring washer 9.

Tenon 6 adopts two articulation holes to be connected with bolt 7 with disk 5; two articulation holes are subjected to torsional interaction with bolt 7 during work; the shearing stress that is produced by moment of torsion during overload surpasses the shear strength limit of material; articulation hole will be cut off with bolt 7; transmission is interrupted, and protection motor and other important parts are not damaged.

Hurt sb.'s feelings for the articulation hole that prevents to cut off flies out with bolt 7, middle floating disc outer rim is fenced up with a protective housing 4 by the sheet metal drawing.

Claims

1. sliding cross coupling, comprise the half-coupling I, the half-coupling II, middle floating disc, it is characterized in that: floating disc is by disk in the middle of described, tenon is assembled, in the middle of the described disk is hollow, described tenon is the bar shape of rectangular cross-section, on the both ends of the surface that are placed into disk with its criss-crossing, and with the articulation hole bolt, nut, packing ring couples together, middle floating disc is between described half-coupling I and half-coupling II, be respectively arranged with groove on described half-coupling I and the half-coupling II end face, the tenon of disk both ends of the surface respectively with described half-coupling I, groove on the half-coupling II end face forms Spielpassung.

2. a kind of sliding cross coupling according to claim 1 is characterized in that: middle floating disc outer rim is provided with protective housing.