DE102009005349A1 - Spur gear has housing and shaft which is supported by drive bearing, and bearing is supported in housing, where drive side end area of shaft is protruded from housing - Google Patents

Abstract

The spur gear has a housing (22) and a shaft (7) which is supported by a drive bearing (11), and a bearing (25) is supported in the housing. A drive side end area of the shaft is protruded from the housing. A pinion gear (1) arranged in housing is fastened on a drive shaft of a motor, and is cogged with a gear-wheel (2). The housing has a section corrugated at a side surface, which forms the corrugated edge of the two sections (30,32).

Description

The The invention relates to a spur gear.

From the DE 1 032 635 is known a spur gear.

Of the Invention is therefore based on the object, a spur gear educate, the service life of the transmission increases is.

According to the invention solved the problem in the specified in claim 1 features.

Important Features of the invention in the spur gear are that the spur gear a housing and a shaft, wherein the shaft by means of an output bearing and a Eintriebslagers in the housing is mounted and a driven-side end portion of the shaft of the Housing protrudes, with an arranged in the housing Gear rotatably on a drive-side end portion of the shaft flying is fixed, wherein a pinion arranged in the housing is attachable to an output shaft of an engine and with the Gear meshes, the housing has a driven side first end surface comprising a first portion from the output side end portion of the shaft protrudes and a forming an edge, adjoining the first section, tapering away from the first section, approximately having trapezoidal second portion, wherein the Edges of the first and second sections at least are partially wavy shaped, wherein the first section is plane-parallel to a drive-side end face and the second Part section inclined to the drive-side end face is, wherein the housing on a side surface a corrugated portion having the corrugated edges of the first and second sub-sections, wherein the housing has a screw plug and a vent valve, which screwed into threads in through holes in the housing are, wherein in the through hole of the screw plug also a vent valve and into the through hole of the Bleed valve also a screw plug screwed are, wherein the drive-side end face of the housing Threaded holes and a continuous recess for flanging a motor. The advantage here is that by the special Shape of the housing the inner surface of the housing is enlarged and still a compact design is reached. Thus, the transmission oil is cooled more efficiently, which leads to an increased service life.

at an advantageous embodiment, the gear and the pinion designed as helical spur gears and have an involute toothing. It is advantageous that pinion and gear mesh securely, reducing wear is and thus the service life is increased.

at a further advantageous embodiment, the output bearing and the bearing designed as a rolling bearing in particular the output bearing as a spherical roller bearing and the bearing as a cylindrical roller bearing. The advantage here is that the carrying capacity increases and thus extends the service life at the same load is.

at a further advantageous embodiment, the output bearing and the bearing designed as a ball bearing. From The advantage here is that the output bearings and bearings safe and easy can be mounted and thus the wear due to improper Installation is reduced. This increases the service life of the spur gear.

at a further advantageous embodiment, the housing a stand for mounting the transmission, wherein the first section a bulged, circular having stepped bearing receiving portion. The advantage here is that the base allows safe heat transfer. The everted bearing mount increases the surface and thus the warm radiation of the spur gear. Both increase the service life of the spur gear.

at a further advantageous embodiment, the housing on the output side, a flange for flanging a to be driven Device on. The advantage here is that the heat safely and efficiently removed from the housing and thus the heat load is reduced. This increases the service life.

Further Advantages emerge from the subclaims. The invention is not limited to the combination of features of the claims. For the expert, further meaningful combination possibilities arise Claims and / or individual claim features and / or Features of the description and / or figures, in particular the task and / or by comparison with the state the technical task.

The The invention will now be explained in more detail with reference to figures. It shows purely schematically:

1 a section through an inventive spur gear with foot;

2 a section through an inventive spur gear with output flange,

3 a front view of the in 1 gezeig th spur gear; and

4 a front view of the in 2 shown spur gear.

That in the 1 to 4 shown spur gear according to the invention comprises a housing 22 which is substantially cuboidal. The housing 22 has a housing wall with through holes. In the through holes are a screw plug 59 and a vent valve 20 screwed. The bleed valve 20 is so elaborated that it is with the locking screws 59 is interchangeable. Thus, that bleed valve 20 be screwed into the appropriate for the particular installation position of the spur gear through hole in the housing wall.

The housing 22 has a drive-side end face with a continuous recess 36 for the engine. At the drive-side end face is a sealing material 29 applied. Around the continuous recess 36 for the engine are blind holes 38 arranged with internal thread to flange the engine to the spur gear. An attached to an output shaft of the motor pinion 1 protrudes with flanged engine in an interior of the housing 22 into it.

Opposite the drive-side end face, the housing 22 an output-side end face, which is divided into a first and a second end face. The second end face is approximately plane-parallel to the drive-side end face. The first end face protrudes from the second end face offset by a step. The first end face is in a first section 30 and second subsection 32 divided. The first section 30 is approximately plane-parallel to the second end face and has a protuberance. The protuberance is formed by graduated concentric circles. From the protuberance protrudes an output shaft from the spur gear out. The protuberance has a recess, which provides access to a locking screw 59 allowed.

The second section 32 is trapezoidal. The legs of the trapezoid have a corrugated shape. The second section 32 connects directly to the first section and is tilted towards the second end face. This results in a contact line of the first section 30 and the second subsection 32 an edge 33 ,

The protuberance serves as a bearing receiving portion of the first section for an output bearing 11 , A warehouse 25 is in a partially formed partition wall of the housing 22 arranged. A wave 7 is through the output bearing 11 and the camp 25 in the case 22 stored and protrudes with a shaft portion of the protuberance out. At the shaft portion of a keyway is worked out in the one output power spring 8th is inserted. To seal the remaining opening between shaft 7 and protuberance serves a shaft seal 9 , An outer ring of the output bearing 11 is by a shoulder in a protuberance inner wall and a retaining ring 12 axially fixed. An inner ring of the output bearing 11 is by a shoulder on the shaft and a shaft securing ring 251 with a support disk 166 axially secured. Thus, the output bearing is designed as a fixed bearing. The warehouse 25 is designed as a floating bearing.

In the 1 and 3 It is shown that the output bearing can be designed as a deep groove ball bearing, or as a spherical roller bearing. A spherical roller bearing is sealed from an interior of the housing by means of a sealing member such as a Nils ring. The warehouse 25 is executable as a deep groove ball bearing or as a cylindrical roller bearing. Of course, other known bearings can be used.

From the output bearing 11 seen in the axial direction behind the camp 25 is a gear 2 flying on the wave 7 arranged. By means of the feather key 19 is the gear 2 rotatably with the shaft 7 connected. Axial is the gear 2 over a shim 23 from an inner ring of the bearing 25 , which is supported on a shaft shoulder, and a retaining ring 28 fixed. The gear 2 meshes with the pinion 1 , In the 1 and 3 are different sizes of the gear 2 and the pinion 1 drawn to illustrate the realization of different translations for the spur gear.

A transport eyelet 28 is attachable to the housing, in particular by a in the blind holes 38 screwed in screw.

The in the 1 and 3 shown embodiment of the spur gear according to the invention has a foot 18 on. The foot 18 is integrally molded with the housing and forms in all four corners of the substantially cuboidal housing 22 protruding parts. The protruding portions have through holes through which fixing screws are feasible.

The in the 2 and 4 shown embodiment of the spur gear according to the invention has a flange 16 on. The flange 16 is by means of a screw 14 attached to an end face of the protuberance and surrounds the shaft 7 , The flange takes over 16 the task of the circlip 12 for axially fixing the outer ring of the output bearing 11 , The shaft seal 9 is now from Flange and not held by the protuberance. An O-ring 81 is between flange 16 and housing 22 pressed in to seal a housing interior. For further sealing is at contact surfaces between housing 22 and flange a sealant 40 attached, which also has connecting properties, such as adhesive properties.

1

pinion

2

gear

7

wave

8th

Output feather

9

Shaft seal

11

output bearing

12

circlip

14

screw

16

flange

18

foot

19

Adjusting spring

20

vent valve

22

casing

23

shim

24

eyebolt

25

camp

28

circlip

29

sealing material

30

first part Of

32

second part Of

33

edge

36

through recess

38

threaded hole

40

sealant

59

Screw

81

O-ring

83

sealing

166

support disc

251

Circlip

518 519

Shim

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 1032635 [0002]

Claims (6)

Helical gear, which is a housing and a wave comprises the shaft being driven by an output bearing and a bearing is mounted in the housing and a driven side End portion of the shaft protrudes from the housing, in which a gear arranged in the housing rotatably on a Drive-side end portion of the shaft is mounted flying, in which a pinion arranged in the housing on an output shaft an engine is fastened and meshes with the gear, in which the housing has a driven-side first end face comprising a first portion of the output side End portion of the shaft protrudes and forming an edge following the first section, starting from the first Parting away tapered, approximately trapezoidal second subsection has, the edges of the first and second sections at least partially corrugated shaped are, wherein the first section is plane-parallel to a drive-side End face is and the second section to the drive side Face is tilted, the case has a corrugated portion on a side surface, which the corrugated edges of the first and second sections forms, the housing being a locking screw and a vent valve which threads into through-holes are screwed in the housing, being in the through hole the screw plug also a vent valve and in the through hole of the vent valve also a screw plug are screwed, wherein the drive-side end face the housing threaded holes and a through recess for flanging a motor. Helical gear according to one of the preceding claims, characterized in that the gear and the pinion as helical spur gears are executed and have an involute toothing. Helical gear according to one of the preceding claims, characterized in that the output bearing and the bearing as Rolling are running in particular the output bearing a spherical roller bearing and the bearing is a cylindrical roller bearing. Helical gear according to one of the claims 1 or 2, characterized in that the output bearing and the Bearings are designed as ball bearings. Helical gear according to one of the preceding claims, characterized in that the housing has a base for Attaching the transmission, wherein the first section an everting, circular stepped bearing receiving portion having. Helical gear according to one of the claims 1 to 4, characterized in that the housing on the output side a flange for flanging a device to be driven.