Flanhardt, Michael; Roth, Andreas; Nienhaus, Clemens;

Double bevel gear angular drive

An assembly consisting of two bevel gear angular drives which are pivotably connected to each other via a pivot bearing, the bearing system including two bevel roller bearings which are tensioned relative to each other between the two sleeves. The shaft carrying the two bevel gears is also supported via bevel roller bearings in the sleeves. In this way it is possible to obtain an assembly which is suitable for implements which transmit high tensile forces to the assembly, without the bearing system and the rotary function of the two drives being adversely affected.

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What is claimed as new and desired to be protected by letters patent is set forth in the appended claims:

1. An assembly, comprising:

two bevel gear angular drives each having a housing;

two spaced bevel roller bearings;

a pivot bearing pivotably connecting the two bevel gear angular drives to the two spaced roller bearings;

a joint shaft extending centrally through the pivot bearing, each of the two bevel gear angular drives having a bevel gear secured on the joint shaft, the pivot bearing including two coaxial sleeves having formed-on flanges secured to the housings of the bevel gear angular drives, the two bevel roller bearings (11) being arranged between the sleeves, and being tensioned relative to each other at the coaxial sleeves (6, 7); and

additional bevel roller bearings (23, 23') arranged so as to support the joint shaft (20) provided with the two bevel gears (22, 22') in the two sleeves (6, 7).

2. An assembly according to claim 1, wherein in each case, a further bevel gear (30, 30') of the two bevel gear angular drives (2, 3) is supported in the housing (5, 5') via third bevel roller bearings (32, 32'), with the third bearings (32, 32') being arranged on either side of the further bevel gear (30, 30').

3. An assembly according to claim 1, wherein the two bevel roller bearings (11) and the additional bevel roller bearing (23) have bevel rollers (14) with end faces (15) of a small roller diameter, at least one of the two and the additional bevel roller bearings (11, 23) associated with the shaft (20) and the two sleeves (6, 7) is arranged so that the end faces (15) of the bevel rollers (14), which have small roller diameter, face each other.

4. An assembly according to claim 1, wherein the sleeves (6, 7) include an outer sleeve (6) and an inner sleeve (7), the bevel roller bearings (11) associated with the sleeves (6, 7) being tensionable via stops (16, 17) at the outer sleeve (6) and the inner sleeve (7) as well as via a tensioning nut (19) which is screwable onto the inner sleeve (6).

5. An assembly according to claim 1, wherein one of the bearings (23') carrying the shaft (20) is received in an outer one of the sleeves (6) and another one of the bearings (23) is received in an inner one of the sleeves (7).

6. An assembly according to claim 3, wherein one of the bearings (23') carrying the shaft (20) is received in an outer one of the sleeves (6) and another one of the bearings (23) is received in an inner one of the sleeves (7).