Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling accommodates drive between members having... – Coupling transmits torque via radially directed pin
Reexamination Certificate
2000-04-12
2001-11-20
Browne, Lynne A. (Department: 3629)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Coupling accommodates drive between members having...
Coupling transmits torque via radially directed pin
Reexamination Certificate
active
06319131
ABSTRACT:
The invention relates to a joint arrangement for the transmission of torque-suited cardan waves, in detail with the features from the generic term of claim
1
.
Journal cross bearing arrangements for joint arrangements are known in various embodiments, for example, from the publications mentioned in the following:
1. DE 35 44 253 C1
2. DE 34 46 495 C2
3. SU 15 07 480 A1
4. DE 196 01 290 A1
The cross joint arrangement described in publication DE 196 01 290 A1 comprises a journal cross, two joint forks for the bearing of the journals of the journal cross, in which each journal of the journal cross is borne by means of a bearing arrangement comprising radial bearing with an outer ring and an inner ring and an axial bearing in a fork eye of the joint fork allocated to this. The inner ring of the radial bearing forms at least indirectly a running surface of the axial bearing. To the inner ring itself there is allocated a first outer collar in installation position in axial direction, which is directed toward the journal axis of the journal borne in the joint fork and which, at least indirectly, forms an axial stop for the seat of the inner ring in the face-side zone of the journal. The first outer collar allocated to the inner ring of the radial bearing is connectable by force fit and/or form fit with the journal borne in the joint fork and/or is supported in part on the journal borne in the joint fork. Further, to the inner ring as viewed in installation position in axial direction there is allocated a second further inner collar, which extends radially away from the journal axis of the journal borne in the joint fork. The inner collar of the inner ring forms, at least indirectly and in axial direction, the outer running surface of the axial bearing. The outer ring of the radial bearing presents in installation position and in axial direction, a first inner collar that extends in direction of the journal borne in the joint fork. The inner collar of the outer ring of the radial bearing forms, indirectly at least, the running surface of the axial bearing in axial direction. The outer ring has in installation position and in axial direction, a further second outer collar, to which there is allocated a stop in the fork eye. Thereby there is achieved an essentially elastic tying of the axial bearing, which can be arranged in the journal root zone. Further, the axial forces directed away from the joint axis in the direction of the journal axis are supported on the joint fork half which lies opposite the joint force half lying in force direction. The axial bearing, lying in the direction of effect of the axial force is then always unburdened. The axial forces, accordingly, are introduced as pressure force into the joint fork. There the blanks for the bearing rings of the radial bearing can be made thinner-walled, which results in a reduction of the weight. On the outer ring no threaded bores are any longer required. This leads to a higher sturdiness and is more economical. As a rule the outer collar allocated to the inner ring of the radial bearing is formed by a separate component. This separate component is executed in cover form and is connectable by means of at least one screw connection with the journal borne in the joint fork. Since the separate component with a part of its face surface facing the joint axis in installation position forms, at least indirectly and in axial direction, a stop for at least outer face surface of the inner ring of the radial bearing, this cover-form component is executed in step form and participates in the introduction of the axial forces over the fork into the radial/axial bearing.
Underlying the invention is the problem of further developing a bearing arrangement of the above-described type in such manner that the supporting of the axial forces and radial forces still can take place in a satisfactory manner.
The inventive solution of the problem is characterized by the features of claim
1
. Advantageous developments are given in the subclaims.
According to the invention it is provided that to a joint arrangement for the transmission of torque with journals borne in the fork eyes of the joint forks, as well as a bearing arrangement for each journal, which comprises at least one radial bearing, and to each bearing arrangement there is allocated a cover-form element subdivided into at least two partial zones of different dimension, which cover-form element forms in the zone of at least one partial zone an axial stop for the seat of the inner ring of the radial bearing, means are allocated which tension the cover-form element at least over one partial zone of the other, second zone with respect to the journal. The cover-form element there takes over several functions; for one, the supporting of the axial forces as well as the supporting of radial forces. The tensioning serves for the axial connecting of the step plate to the journal cross. Relative movements of the individual elements of the bearing arrangements during the force transfer are thus further reduced.
The means for tensioning the cover-form element with respect to the journal can be executed as a compression joint. For the realization of the pressure connection there are a large number of possibilities:
Providing of a compression joint between at least one part of the second partial zone of the cover-form element and of the journal bore
Providing of a means for the expanding at least of a part of the second partial zone of the cover-form element with respect to the journal bore
Providing of an oil-pressure joint between at least one part of the second partial zone of the cover-form element and the journal execution of the press connection as a transverse press connection
The concrete embodiment, and the selection of the possibility for the realization of the tensioning between cover plate and journal cross in axial and radial directions occurs in dependence on the concrete relations of the particular case and lies within the judgment of the specialist.
In executions for the realization of a tensioning between the cover-form element and the journal cross by means of a conical bolt which can be driven for the expansion into the cover-form body, there is preferably provided a twisting safeguard for the bolt-form element, in order under load to avoid an unburdening of the tensioning between cover-form element and journal cross. Preferably this bolt twisting safeguard is executed in the form of a yoke-shaped which engages on the bolt head and is secured to the screw connections for the fastening of the cover-form element to the journal cross. Other possibilities are likewise conceivable.
REFERENCES:
patent: 1899840 (1933-02-01), Williams
patent: 1943814 (1934-01-01), Cutting
patent: 2026997 (1936-01-01), Rice
patent: 2040002 (1936-05-01), Jones
patent: 3005324 (1961-10-01), Zeller
patent: 3200615 (1965-08-01), Stokely
patent: 3204428 (1965-09-01), Stokley
patent: 3353374 (1967-11-01), Buthenhoff
patent: 3832865 (1974-09-01), Lewis
patent: 4144724 (1979-03-01), Armasow et al.
patent: 4705490 (1987-11-01), Lindenthal
patent: 4710150 (1987-12-01), Mangiavacchi
patent: 4895549 (1990-01-01), Lindenthal
patent: 5547423 (1996-08-01), Lindenthal et al.
patent: 5989125 (1999-11-01), Lindenthal
patent: 34 46 495 (1986-12-01), None
patent: 35 44 253 (1987-06-01), None
patent: 40 33 753 (1992-03-01), None
patent: 195 29 980 (1997-03-01), None
patent: 196 01 290 (1997-07-01), None
patent: 1507-480 (1978-09-01), None
“Bogenzahn-Kupplung mit Derhmomentbegrenzung”, Antriebstechnik 23 (1984) No. 8, p. 32.
Baker & Daniels
Browne Lynne A.
Thompson Kenn
Voith Turbo GmbH & Co. KG
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