DE102007058916B4 - Angular gearboxes and series of such angular gearboxes - Google Patents

Abstract

Angular gear, characterized in that each gear stage is assigned a shaft (1, 10, 11, 9), with the exception of a first shaft (1) all further shafts (10, 11, 9) being arranged parallel to one another, with each shaft (1, 10 , 11, 9) is mounted by means of at least one pair of angular contact bearings in an X arrangement, the first shaft (1) being designed or connected to a first toothing part which engages with a further toothing part which is positively connected to a second shaft (10) is connected by means of a feather key connection, the second and a third shaft (10, 11) each having a toothed area (5, 7) which is connected to a gear wheel (6, 8) which is connected to the third and fourth shaft (11,9) is positively connected, is in engagement, the third and second shaft (11, 10) being covered by a bearing cover (14, 20) common on both opposite sides and the fourth shaft (9) being covered by a separate bearing cover (12), where di e bearing caps (12, 14, 20) are provided oil-tight and detachable, the form-fitting connection being designed with little play, in particular with less than 10 angular minutes, the toothing areas (5, 7) of the second and third shaft (10, 11) as involute toothing or modified involute gears are designed, the first and further toothing part being designed as a bevel gear (300, 4) or the first and further toothing part forming a spiral gear stage, a hypoid gear stage or a crown gear stage.

Description

The invention relates to an angular gearbox and a series of such angular gearboxes.

Gear wheels with involute teeth are known.

From the DE 693 04 565 T2 a series of geared motors with angle reduction gears is known as the closest prior art.

From the DE 693 22 991 T2 an intermediate piece for gearbox and engine is known.

A hypoid gear is known from US 2004/0129 101 A1.

The invention is based on the object of producing an angular gear unit and a series of such angular gear units with a high output torque.

According to the invention, the object is achieved in the angular gear according to the features specified in claim 1 and in the series of angular gears according to the features specified in claim 2.

Essential features of the invention in the angular gear are that each gear stage is assigned a shaft, with the exception of the first shaft, all other shafts are arranged parallel to each other,
each shaft is supported by at least one pair of angular contact bearings in an X-arrangement,
wherein the first shaft is designed or connected to a first toothed part which is in engagement with a further toothed part which is positively connected to the second shaft by means of a feather key connection,
wherein the second and third shaft each have a toothed area which is in engagement with a gear that is positively connected to the third and fourth shaft,
wherein the third and second shaft is covered by a bearing cover common to both opposite sides and the fourth shaft is covered by a separate bearing cover,
wherein the bearing caps are provided oil-tight and detachable,
wherein the form-fitting connection is designed with little play, in particular with less than 10 angular minutes,
wherein the toothed areas of the second and third shaft are designed as involute or modified involute gears
wherein the first and further toothing part is designed as a bevel gear or the first and further toothing part form a Spiroplan gear stage, a hypoid gear stage or a crown gear stage.

The advantage here is that high output torques of over 100,000 Nm can be generated and the gears are only slightly loaded. The gears have a long service life and run very quietly if the gears are helical gears. The gearboxes are very robust and easy to manufacture, i.e. not with high technology, but with standard machine tools.

The main features of the series of angular gearboxes are that different variants of the series are created by exchanging the fourth shaft for an exchange shaft that protrudes from the gearbox on both sides,
the bearing cover being exchanged for a correspondingly provided exchange bearing cover on the side from which the replacement shaft protrudes.

The advantage here is that a high degree of variance in the series can be generated with just a few components.

• In der 1a ist ein Querschnitt durch das erfindungsgemäße Getriebe gezeigt. In 2 ist eine Draufsicht gezeigt und in 3 eine zugehörige Seitenansicht.

The invention will now be explained in more detail with reference to figures:

• In the 1a a cross section through the transmission according to the invention is shown. In 2 is a plan view shown and in FIG 3rd an associated side view.

A first wave 1 is via two pairs of angular contact bearings provided in an X arrangement 2 stored in the housing 15th of the transmission. On the wave 1 is a bevel gear 300 positively connected by means of a feather key connection, which is connected to a gearwheel designed as a bevel gear 4th is in engagement, which is via a form-fitting key connection with the second shaft 10 is connected, which in turn has a toothed area 5 having that with a gear 6th is in engagement, which is via a form-fitting key connection with the third shaft 11 is connected with little play.

The third wave 11 carries a toothed area 7th that with a gear 8th engages that with the fourth wave 9 is connected, which protrudes from one side of the transmission and on the other side by means of a detachable bearing cover 12th is covered.

The second wave 10 and the third wave 7th are covered together by a bearing cap 20 and on the opposite side by a further bearing cap 20.

The housing has lifting eyes 16 with which it is simple and easy to transport.

With the exception of the first wave, all waves are aligned parallel to one another. The weight of the gear unit is intended to be between 100 kg and 10 tons, depending on the dimensions.

In 1b is a fourth wave of exchanges 900 shown by the fourth wave 9 can be replaced, creating a further variant of the transmission. The fourth wave of exchanges 900 in turn protrudes from the transmission on both sides.

Overall, different variants of a series can thus be produced for different applications, with only a few components having to be used and stocked.

All waves are full waves.

In other variants, the first wave is not coaxial with the other waves as in FIG 1a arranged, so the mathematical axes of the shaft intersect 1 and the other shafts, there is an offset. In this case, depending on the gear ratio, no bevel gear teeth are provided, but hypoid teeth, spiroplanar teeth or crown gear teeth.

List of reference symbols

1

first wave

2

Angular contact

4th

Gear, bevel gear

5

Toothing area

6th

gear

7th

Toothing area

8th

gear

9

fourth wave

10

second wave

11

third wave

12th

Bearing cap

14th

Bearing cap

15th

casing

16

Transport eye

300

Bevel gear

900

fourth wave of exchanges

Claims (2)

Angular gear, characterized in that each gear stage is assigned a shaft (1, 10, 11, 9), with the exception of a first shaft (1) all further shafts (10, 11, 9) being arranged parallel to one another, each shaft (1st , 10, 11, 9) is mounted by means of at least one pair of angular contact bearings in an X-arrangement, the first shaft (1) being designed or connected with a first toothing part which is in engagement with a further toothing part which is connected to a second shaft (10 ) is positively connected by means of a feather key connection, the second and a third shaft (10, 11) each having a toothed area (5, 7) which is connected to a gear wheel (6, 8) which is connected to the third and fourth shaft (11, 9) is positively connected, is in engagement, the third and second shaft (11, 10) being covered by a bearing cover (14, 20) common on both opposite sides and the fourth shaft (9) being covered by a separate bearing cover (12) is wherein the bearing caps (12, 14, 20) are provided oil-tight and detachable, the form-fitting connection being designed with little play, in particular with less than 10 angular minutes, the toothed areas (5, 7) of the second and third shaft (10, 11) as Involute gears or modified involute gears are designed, the first and further toothing part being designed as a bevel gear (300, 4) or the first and further toothing part forming a spiral gear stage, a hypoid gear stage or a crown gear stage. Series of angular gears according to Claim 1 , characterized in that different variants of the series are produced by replacing the fourth shaft (9) with a replacement shaft (900) which protrudes on both sides from the gearbox, the bearing cover (12) on the side from which the replacement shaft (900) protrudes is exchanged for a correspondingly provided replacement bearing cover.

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