DE102009005347A1 - Spur gear has housing and shaft, where fastening screw and air vent valve are carried such that through-hole is screwed - Google Patents

Abstract

The spur gear has a housing (22) and a shaft. The housing is formed by a housing wall, and has a fastening screw and an air vent valve (59). The air vent valve is screwed in a through-hole with inner thread in the housing wall. The fastening screw and the air vent valve are carried such that the through-hole is screwed.

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 is increased.

According to the invention the task in the spur gear according to the specified in claim 1 Characteristics solved.

Important Features of the invention in the spur gear are that the spur gear a housing formed by a housing wall and a shaft, wherein the housing is a closure screw and a vent valve, which in through-holes with internal thread screwed into the housing wall comprises, the through-holes with female thread and the locking screw and the vent valve are designed so that the vent valve and the screw plug in the other through hole can be screwed, wherein the housing is an approximately cuboid Partial area and a to a surface of the cuboid Subarea subsequent, almost semi-disc-shaped Partial area, wherein an approximately semicircular Edge of the semi-disc-shaped portion in the semi-disc-shaped Part area is pulled, leaving a dented portion of the semi-disc-shaped Part of the area is formed, from the indented section perpendicular to the surface a solid wall section protrudes, which has a second through-hole, and a partial section the surface of the indented section wavy is formed, wherein a curved peripheral surface of the semi-disc-shaped portion a flattened portion which is parallel to the surface runs, one of the surface opposite Housing wall section is designed as a lid, which is fastened by means of a cover screw which passes through a passage recess is guided in the lid and in a threaded blind holes in the housing wall is screwed and a seal between the lid and the housing wall is trapped, with an end face of the cuboid Partial region has at least three circular recess, wherein one of the end face opposite second End face has at least one recess, wherein another end face of the semi-disc-shaped Partial area, which adjoins the second end face, at least partially a recess and the recess surrounding Has fastening means which for flanging a motor can be used on the spur gear, both side walls of the cuboid portion at least two plane, parallel, spaced support surfaces include, which have a blind hole with internal thread and the internal thread through a further sealing plug in the Blind hole with internal thread are protected, in the Housing at least six bearing receptacles are arranged, leaving the case for a two-stage or a three-stage spur gear is used, wherein at least always two bearing receptacles are arranged corresponding to each to store a shaft in the housing, with an intermediate shaft and an output shaft are disposed in the housing and the Output shaft through an output bearing and a third bearing in the housing is stored and the intermediate shaft by a first and a second Intermediate shaft bearing is mounted in the housing, wherein a third Gear is rotatably mounted on the output shaft, and a second Gear is rotatably mounted on the intermediate shaft, wherein a Intermediate shaft pinion is arranged on the intermediate shaft and the Intermediate shaft pinion with the third gear is engaged respectively meshes with a motor pinion through the recess in the second end face protrudes into the engine compartment. Is an advantage in that the spur gear is versatile and easy can be converted and thus the service life is increased, because even under changed conditions, the spur gear can be used further.

at an advantageous embodiment, the motor pinion is flying in Housing arranged and meshes with the second gear and a second spacer tube is between the second gear and arranged the intermediate shaft pinion on the intermediate shaft. Advantageous is that the spur gear no shaft for the Motor pinion needed. Thus, storage locations are saved, which reduces wear and increases service life.

at A further advantageous embodiment is a first pinion shaft, which has a pinion, in the housing by a first and a second bearing mounted, a first gear is rotationally fixed arranged on the first pinion shaft, and by the first pinion shaft, the intermediate shaft and the output shaft define defined axes in a plan view from the front face a triangle and are parallel to each other, and a second spacer tube is between the second gear and the second intermediate shaft bearing on the intermediate shaft arranged, wherein the motor pinion meshes with the first gear, the Pinion of the first pinion shaft meshes with the second gear and the intermediate shaft pinion meshes with the third gear. The advantage here is that the spur gear is compact and is still well-cooled, which increases the service life.

In a further advantageous Ausgestal tion is a bearing receptacle, in particular the bearing receptacle for the first bearing, worked out in a cone-shaped drawn into the housing deformation of the end face, wherein a cone base surface of the cone-shaped drawn into the housing deformation lies in the end face. The advantage here is that the shaft of the corresponding bearing receptacle is short, which improves the heat dissipation and thus increases the service life.

at In another advantageous embodiment, two of the at least three recesses in the face with a first and a third cap can be closed. Advantageous is that the inside of the case is protected from dust and thus the abrasion is reduced, which increases the service life.

at a further advantageous embodiment projects as a solid shaft executed output shaft with a portion of a the recesses in the face out. Advantageous is that the heat is dissipated well can, which increases the service life.

at a further advantageous embodiment, the output shaft designed as a hollow shaft. The advantage here is that one driven device is well connected to the output shaft. As a result, the torque is easy to transfer and the service life elevated.

at a further advantageous embodiment, the lid has a screwed into a cover through hole with internal thread screw plug on. The advantage here is that the oil is easily replaceable is. This makes the oil change easier and not neglected, which increases the service life.

at a further advantageous embodiment are shaft end faces the intermediate shaft and the output shaft parallel to the end face arranged and the second gear is on the end face arranged away half of the intermediate shaft. Advantageous is there that the gears and pinions are good and wear mesh.

at In a further advantageous embodiment, all bearings are designed as roller bearings especially designed as deep groove ball bearings or tapered roller bearings. The advantage here is that the bearings of the load accordingly are selected, which increases the service life.

at a further advantageous embodiment is to the recess in the end face surrounding the output shaft, a Flange arranged. The advantage here is that the spur gear safe and wear-resistant with a device to be driven is connectable.

at A further advantageous embodiment is between the output bearing and the third gear arranged a third spacer tube. From The advantage here is that the third gear securely in the axial Position is maintained and thus wear with the corresponding Pinion works together.

at In another advantageous embodiment, the gears, Spacer tubes and bearings by retaining rings axially on the shafts secured. The advantage here is that these elements axially safe are stored and thus wear together wear together.

at In a further advantageous embodiment, the second, third and if present, the first gear on the corresponding shaft positive fit, in particular by means of feather key and / or non-positively fastened in particular by means of shrinking or gluing. Advantageous is doing that the gears and pinion executable play are and thus the wear is reduced.

at In another advantageous embodiment, the first pinion shaft, the intermediate shaft, and the output shaft worked out as polygonal waves. The advantage here is that the torque between gears and shafts safely and wear-resistant transferable is.

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 a drawing. It shows purely schematically:

1 a three-dimensional exploded view of a spur gear;

2 a cut through the in 1 2-stage spur gear shown;

3 a cut through the in 1 shown spur gear in three-stage design;

4 a section of a hollow shaft with tensioning device for a spur gear according to the invention;

5 a section through a cap for a spur gear according to the invention; and

6 a view of another embodiment of a spur gear according to the invention with a solid shaft.

1 and 3 show in exploded view or in section, a housing 22 having, three-stage spur gear. A driving motor pinion 1 is attachable to a motor shaft. The motor pinion 1 protrudes from a Eintriebsseite forth through a recess of another end face in the housing 22 in and is, in the assembled state, with a first gear 2 engages or meshes with this first gear 2 , The first gear 2 is by means of a first key 43 rotatably on a pinion shaft 3 arranged. The feather key 43 lies in a keyway of the pinion shaft 3 , On a section of the pinion shaft 3 is a first sprocket worked out. Because the first pinion has a larger diameter than the pinion shaft 3 has, it forms in both pinion end region depending on a drive side and output side pinion shoulder on the pinion shaft 3 , At the drive-side pinion shoulder is the first gear 2 axially.

The pinion shaft 3 is about a first camp 42 and a second camp 45 in the case 22 stored the spur gear. The second camp 45 is in a second bearing receptacle in a drive-side housing wall of the housing 22 arranged. An outer ring of the second bearing 45 is attached to a shoulder of the second bearing receiver. An inner ring of the second bearing is supported by the first gear 2 on the drive-side pinion shoulder off. An inner ring of the first bearing 42 stands on the output side pinion shoulder. The first bearing is in a cone-shaped in the housing 22 extending wall portion of a driven-side housing wall of the housing. An outer ring of the first bearing 42 is through a first shim 515 and a first circlip 41 supported on the housing side. The pinion shaft 3 is through a first circular recess in a driven-side end face of the housing 22 can be inserted in the spur gear. After mounting the pinion shaft 3 The first circular opening is through a third cap 181 locked.

The first pinion meshes with a second gear 4 , The second gear 4 is by means of a second feather key 31 rotatably on an intermediate shaft 5 arranged. The feather key 31 is in a keyway of the intermediate shaft 5 inserted. A portion of the intermediate shaft is formed as a second pinion. Since the second pinion has a larger diameter than the intermediate shaft 5 , The second pinion forms a driven side and a drive side intermediate shaft shoulder.

The intermediate shaft is via a first intermediate shaft bearing 37 and a second intermediate shaft bearing 30 in the case 22 stored. The second intermediate shaft bearing 30 is arranged in a further bearing receptacle in the drive-side housing wall. An outer ring of the second intermediate shaft bearing 30 supports on the drive side on a shoulder of the further bearing support. A continuous, arranged concentrically to the further bearing receptacle opening in the drive-side housing wall is in the assembled state of the spur gear of a second cap 161 locked. An inner ring of the second intermediate shaft bearing 30 supported by a second spacer tube 31 and the second gear 4 on the drive-side intermediate shaft stage. The spacer tube 31 is between the second intermediate shaft bearing 30 and the second gear 4 on the intermediate shaft 5 arranged. The spacer tube 31 fixes the second key 31 axially stationary, so that these with the second gear 4 axially corresponds. This is necessary because the keyway of the intermediate shaft is designed to be longer in the axial direction than the second key. The second gear 4 is thus fixed axially.

The first intermediate shaft bearing 37 is arranged in a bearing receptacle of the output-side housing wall. An inner ring of the first intermediate shaft bearing 37 supported on the output side intermediate shaft shoulder. An outer ring of the first intermediate shaft bearing 37 is on the output side by a second locking ring 39 , which is engaged in a groove of the bearing seat of the driven-side housing wall, supported.

The intermediate shaft 5 is through a second circular opening in an end face of the driven-side housing wall into the housing 22 inserted. This second circular opening is in the mounted state of the spur gear by a first cap 131 locked. Between the first cap 131 and the second circlip 39 is a shim 506 arranged.

The second pinion meshes with a third gear 6 , The third gear 6 is by means of a third feather key 19 rotatably on an output shaft 7 arranged. The output shaft 7 is at the in 1 to 4 shown embodiments designed as a hollow shaft.

The output shaft 7 is in the case 22 through an output bearing 11 and a third camp 25 stored. The third camp 25 is arranged in a third bearing receptacle in the drive-side housing wall. An outer ring of the third bearing is the output side via a third shim 521 from a third circlip 88 supported. The retaining ring is in a circumferential groove in the third bearing receptacle arranged. If the output shaft is designed as a hollow shaft, the output shaft closes 7 flush with the outer surface of the drive-side housing wall, or, as in the in 4 shown embodiment of the output shaft 7 on the drive side protrudes beyond the drive-side housing wall. The remaining opening between the wear shaft 7 and the housing 22 through another shaft seal 183 and / or a second double sealing ring 184 sealed. An inner ring of the third bearing 25 supported on the output side on a shoulder in the output shaft 7 from.

The output bearing 11 is arranged in an opening of the output-side housing wall with a ring-shaped reinforced housing wall area. An inner ring of the output bearing 11 supported by a third spacer tube 17 and the third gear 4 on another shoulder in the output shaft. A flange is bolted to the annular reinforced housing wall area with a flange screw. An outer ring of the output bearing 11 is axially supported by a projection of the flange on the output side. One between output shaft 7 and annular reinforced housing portion remaining opening is provided with a shaft seal 9 and / or a first double seal 10 sealed.

In the hollow shaft is a disc 92 a spring washer 93 a shaft security 91 and a hollow shaft screw 94 arranged in the drive-side half and serve for mounting a drive shaft of a device to be driven. Next is a fit protection element 990 arranged in the hollow shaft. The hollow shaft is the drive side by a first hollow shaft sealing plug 95 and on the output side by a second hollow shaft sealing plug 168 closable.

In the 4 shown output shaft 7 as a hollow shaft has a clamping device for mounting a shaft to be driven. The clamping device consists of a clamping disc 98 and a cover 99 , In the 5 Cover shown in detail 99 is attached by a screw on the housing wall.

At an output shaft 7 as a full wave, as in 6 shown ends a drive-side output shaft stub in the housing 22 , A drive-side opening corresponding to the output shaft is closed by a cap. On the output side, the solid shaft projects out of the housing with a partial section. This section has a keyway with insertable key, which serves for the rotationally fixed connection of the output shaft with a device to be driven. In 6 is the flange 16 shown only halfway to clarify that the flange 16 only optional attachable. Missing the flange 16 , so is the outer ring of the output bearing 11 on the output side held by an additional circlip.

In the in the 2 shown two-stage spur gear is the pinion shaft 3 omitted and the second gear 4 is arranged so that it meshes with the engine pinion. That's the second spacer tube 31 on the intermediate shaft between the second pinion and the second gear 4 arranged. Because the feather keyway in the intermediate shaft 5 long enough is the same intermediate shaft 5 be used for a two-stage and a three-stage spur gear or a spur gear can be converted arbitrarily.

The bearings used are preferably designed as rolling bearings and in particular as ball bearings. The first and second intermediate shaft bearings 30 . 34 are preferably designed as tapered roller bearings. The output shaft bearing 11 and the third camp 25 are also executable as spherical roller bearings. As a result, higher loads can be absorbed.

The Housing has an approximately cuboid Partial area and a to a surface of the cuboid Subarea subsequent, almost semi-disc-shaped Subarea. An approximately semicircular Edge of the semi-disc-shaped portion is in the semi-disc-shaped portion pulled, leaving a dented Section of the semi-disc-shaped portion formed is. A section of the surface of the indented Section is wavy shaped.

Out the indented section is perpendicular to the surface a massive wall section. The massive wall section points a second through hole. The massive wall section serves for attaching a torque arm for the spur gear.

A curved peripheral surface of the semi-disc-shaped portion has a flattened portion which is parallel to the surface. In the flattened section is perpendicular to the surface of a vent valve 20 screwed into a through hole with internal thread in the housing wall.

A surface of the housing opposite housing wall portion is as a lid 100 executed, which by means of a cover screw 101 is fixed, which is guided by a through-hole in the lid and is screwed into a threaded blind holes in the housing wall. A seal 102 is clamped between the cover and the housing wall.

In the lid and at other places in the housing wall are screw plugs 59 screwed into through holes with internal thread. The through holes with internal thread and the screw plug 59 and the vent valve 201 are designed so that the vent valve 20 and the locking screws 59 in the respective other through hole can be screwed. So can the position of the vent valve 20 easy us quickly adapted to the mounting position of the spur gear.

An end face of the cuboid portion, which forms the larger part of the output-side housing wall has three circular recess, through which the corresponding waves 3 . 5 . 7 can be mounted. The two to the waves 3 . 5 . 7 Corresponding bearing receptacles define axes which are arranged in parallel offset from one another. The axes define a triangle in supervision. By appropriate choice of the size of the pinions and gears 2 . 4 . 6 Different gear ratios of the spur gear in three-stage or two-stage design can be realized.

In a not-shown embodiment, at least one of the shafts, 3 . 5 . 7 as polygon waves, as in the DE 10 2004 037 782 described, executed.

The drive-side housing wall is through a further end face of the semi-disc-shaped portion, and a to the other end face towards the lid 100 subsequent second end face formed. A recess and the recess surrounding fastening means of the drive-side housing wall is used for flanging a motor to the spur gear.

For mounting the spur gear two flat, parallel, spaced support surfaces are integrally formed on both side walls of the cuboid portion. The contact surfaces have a blind hole bore with internal thread and the internal thread are through another closure plug 165 protected in the blind hole with internal thread.

1

pinion

2

first gear

3

pinion shaft

4

second gear

5

intermediate shaft

6

third gear

8th

Output feather

7

output shaft

9

Shaft seal

10

first Double-ring

11

output bearing

12

Output bearing retaining ring

14

Flange

16

flange

17

third spacer tube

19

third Adjusting spring

20

bleed screw

22

gearbox

25

third camp

29

sealant

30

second Intermediate shaft bearing

31

second Adjusting spring

32

second spacer tube

37

first Intermediate shaft bearing

39

second circlip

40

additional sealant

41

first circlip

42

first camp

43

first Adjusting spring

45

second camp

59

Screw

81

sealing

83

first sealing

84

second sealing

88

third circlip

89

Output shaft cap

91

Circlip

92

disc

93

spring washer

94

Hollow shaft screw

95

first Hollow shaft sealing plug

98

shrink disc

99

cover

100

cover

101

cover screw

102

poetry

131

first cap

137

support disc

158

cap

160

sealing plug

161

second cap

165

Another sealing plug

167

additional sealing plug

168

second Hollow shaft sealing plug

181

third cap

183

Another Shaft seal

184

second Double-ring

506

second shim

515

first shim

521

third shim

990

Passungsschutzelement

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]
• - DE 102004037782 [0048]

Claims (15)

Helical gear, which through a housing wall formed housing and a shaft, the Housing a screw plug and a vent valve, which in through holes with internal thread in the housing wall are bolted, includes wherein the through holes with Internal thread and the screw plug and the vent valve are designed so that the vent valve and the locking screw in the other through hole are screwed, the housing is approximately cuboid portion and a to a surface adjoining the cuboid section, has approximately half-disc-shaped portion, in which an approximately semicircular edge of the semi-disc-shaped Subregion pulled into the semi-disc-shaped portion is, so a dented portion of the semi-disc-shaped Subregion is formed, being from the indented section perpendicular to the surface, a solid wall portion protrudes, which has a second through hole, and a portion of the Surface of dented section wavy is formed, wherein a curved peripheral surface of the semi-disc-shaped portion a flattened Section which runs parallel to the surface, in which a housing wall section opposite the surface is designed as a lid, which by means of a cover screw is fixed, which through a through hole in the lid is guided and in a threaded blind holes screwed into the housing wall and a seal is clamped between the lid and the housing wall, in which an end face of the cuboid portion has at least three circular recess, in which one of the end face opposite second End face has at least one recess, in which another end face of the semi-disc-shaped Partial area, which adjoins the second end face, at least partially a recess and the recess surrounding Has fastening means which for flanging a motor can be used on the spur gear, with both side walls of the cuboid portion at least two plane, parallel, spaced support surfaces include, which have a blind hole with internal thread and the internal thread through another closure plug in the Blind hole are protected with internal thread, in which at least six bearing receptacles are arranged in the housing, leaving the case for a two-stage or a three-stage helical gear is used, at least always two bearing receptacles are arranged corresponding to each to store a shaft in the housing, being an intermediate shaft and an output shaft are disposed in the housing and the Output shaft through an output bearing and a third bearing in the housing is stored and the intermediate shaft by a first and a second Intermediate shaft bearing is mounted in the housing, in which a third gear is rotatably mounted on the output shaft, and a second gear rotatably mounted on the intermediate shaft is wherein an intermediate shaft pinion arranged on the intermediate shaft is and the intermediate shaft pinion with the third gear in engagement stands or combs, being a motor pinion through the recess in the second end face in the Engine room protrudes into it. Spur gear according to claim 1, characterized that the motor pinion is arranged flying in the housing and meshes with the second gear and a second spacer tube between the second gear and the intermediate shaft gear on the Intermediate shaft is arranged. Helical gear according to claim 1, characterized, that a first pinion shaft having a pinion in the housing is supported by a first and a second bearing, a first Gear is rotatably mounted on the first pinion shaft, and through the first pinion shaft, the intermediate shaft and the output shaft defined axes in plan view from the end face ago form a triangle and are parallel to each other, and a second Spacer tube between the second gear and the second intermediate shaft bearing is arranged on the intermediate shaft, the engine pinion meshes with the first gear, the pinion of the first pinion shaft meshes with the second gear and the intermediate shaft pinion with the third gear meshes. Helical gear according to one of the preceding claims, thereby marked that a bearing receptacle, in particular the bearing receptacle for the first bearing, in a cone-shaped in the housing drawn deformation of the end face is worked out wherein a cone base surface of the cone-shaped deformation drawn into the housing lies in the face. Helical gear according to one of the preceding claims, characterized in that two of the at least three recesses in the end face can be closed with a first and a third cap. Helical gear according to one of the preceding claims, characterized in that one executed as a solid shaft Output shaft with a portion of one of the recesses in protruding from the face. Helical gear according to one of the preceding claims, characterized in that the output shaft designed as a hollow shaft is. Helical gear according to one of the preceding claims, characterized in that the lid is in a lid through hole Having screwed with internal thread screw plug has. Helical gear according to one of the preceding claims, characterized in that the shaft end faces of the intermediate shaft and the output shaft arranged parallel to the end face are and the second gear on the end face facing away from the half the intermediate shaft is arranged. Helical gear according to one of the preceding claims, characterized in that all bearings as rolling bearings in particular designed as deep groove ball bearings or tapered roller bearings are. Helical gear according to one of the preceding claims, characterized in that the recess in the end face, which surrounds the output shaft, a flange is arranged. Helical gear according to one of the preceding claims, characterized in that between the output bearing and the third gear, a third spacer tube is arranged. Spur gear according to one of the preceding claims, characterized characterized in that the gears, spacer tube and bearings are secured axially on the shafts by retaining rings. Helical gear according to one of the preceding claims, characterized in that the second, third and if present the first gear on the corresponding shaft form-fitting in particular by means of feather key and / or non-positively in particular by means of shrinking, is attached. Helical gear according to one of the preceding claims, characterized in that the first pinion shaft, the intermediate shaft, and the output shaft are designed as polygonal shafts.