Reducer assembly with reducer

Abstract

The utility model relates to a speed reducer assembly with a speed reducer, the speed reducer is provided with a shell formed by a shell lower part and a cover piece placed on the shell lower part, a first bearing of an output shaft is received in the shell lower part, and a second bearing is received in the cover piece. The second bearing is limited in the axial direction by a bearing cover connected to the cover part, the output shaft is designed as a hollow shaft, on the side of the bearing cover facing away from the second bearing, the bearing cover is connected to a first adapter ring, on the side of the first adapter ring facing away from the second bearing, the first adapter ring is connected to a first flange ring, and the air inlet pipe can be connected to the first flange ring.

Description

Technical Field

[0001] The utility model relates to a reducer assembly with a reducer. Background Art

[0002] As is well known, a speed reducer is constructed with an input shaft and an output shaft, wherein the output shaft is rotatably supported by a bearing received in a housing. Utility Model Content

[0003] The object of the present invention is therefore to improve a reduction gear in a compact and multifunctional manner, ie in particular not only for transmitting torque but also for carrying out other functions.

[0004] According to the present invention, this object is achieved by a reducer assembly having the following features.

[0005] In terms of the reducer assembly having a reducer, an important feature of the present invention is that the reducer has a housing formed by a housing lower part and a cover placed on the housing lower part.

[0006] The first bearing of the output shaft is accommodated in the housing lower part, in particular in a sleeve-shaped or pot-shaped thickening of the housing lower part.

[0007] wherein the second bearing is received in the cover,

[0008] The second bearing is limited in the axial direction by the bearing cover connected to the cover.

[0009] Among them, the output shaft is designed as a hollow shaft.

[0010] The bearing cap is connected to a first adapter ring on the side of the bearing cap facing away from the second bearing.

[0011] The first adapter ring is connected to the first flange ring on a side of the first adapter ring facing away from the second bearing.

[0012] The air inlet pipe can be connected to the first flange ring.

[0013] The advantage here is that the reducer not only transmits torque but also performs a further function, namely guiding the air flow through the reducer, in particular the output shaft. The output shaft thus also serves as an air guide. This makes the reducer multifunctional, and this does not require the associated additional installation space.

[0014] In an advantageous embodiment, the first flange ring has an annular projection, the outer diameter of which is greater than the clear inner diameter of the output shaft. This has the advantage that the air supply tube can be placed onto the projection and pressed onto it in a force-fitting manner, in particular by means of a shrink ring, so that a gas-tight and / or compressed gas-tight connection is produced between the air supply tube and the first flange ring.

[0015] In one advantageous embodiment, the outer diameter of the first flange ring is larger than the outer diameter of the bearing cap. This has the advantage that an air supply line that is significantly larger than the hollow shaft, or at least larger than the clear area / clear inner diameter of the hollow shaft, can be connected. Furthermore, sufficient sealing, i.e., a sufficiently high level of protection, can be achieved while installing the shrink ring with minimal effort.

[0016] In an advantageous embodiment, the outer diameter of the first adapter ring is greater than the outer diameter of the bearing cap. Advantageously, the first flange ring connected to the first adapter ring can have an equally large diameter and thus can be connected to a correspondingly large air supply line.

[0017] In an advantageous design, a first shaft sealing ring is accommodated in the bearing cover, which forms a seal against the output shaft. The advantage here is that the reducer interior is sealed toward the environment.

[0018] In one advantageous embodiment, a second shaft sealing ring is accommodated in the first adapter ring and forms a seal against the output shaft. This advantageously allows the air supplied via the air supply line to be guided exclusively through the hollow output shaft. To this end, the air supply line is sealingly connected to the first flange ring, which in turn is sealingly connected to the first adapter ring. Together with the second shaft sealing ring, the first adapter ring forms a seal against the output shaft.

[0019] In an advantageous embodiment, the first flange ring is spaced apart from the output shaft, in particular in the axial direction. Advantageously, the first flange ring is fixedly arranged, while the output shaft is rotatably arranged relative to the first flange ring.

[0020] In an advantageous design, the second adapter ring is connected to the output shaft in a rotationally fixed manner on the end region of the output shaft that faces away from the first flange ring. Advantageously, large torque can be transmitted to the agitator / mixer that is connected to the second adapter ring.

[0021] In an advantageous embodiment, the region of the output shaft protruding from the housing lower part on the side facing away from the first flange ring is covered by the second adapter ring.

[0022] The second flange ring is placed onto the output shaft, which has the advantage that the shaft is protected.

[0023] In an advantageous embodiment, the second flange ring is pressed onto the output shaft by a screw which is axially oriented, ie in particular parallel to the axis of rotation of the output shaft.

[0024] In an advantageous embodiment, the second adapter ring rests on the output shaft in the region of the output shaft protruding from the housing lower part on the side facing away from the first flange ring, in particular completely.

[0025] In an advantageous embodiment, the outer diameter of the second adapter ring increases monotonically with increasing distance from the bearing cap, particularly in the region covered by the output shaft in the axial direction. This has the advantage that high torques can be transmitted to the stirrer.

[0026] In an advantageous design, the first bearing and the second bearing are respectively designed as angular contact bearing pairs / radial thrust bearings. This has the advantage that high transverse forces can be absorbed.

[0027] In an advantageous embodiment, a seal, in particular an O-ring, is arranged between the first adapter ring and the first flange ring. This has the advantage that the air flow can pass through the output shaft without losses.

[0028] In an advantageous embodiment, the air supply line is connected to the first flange ring in an airtight manner, in particular in a compressed gas-tight manner. This has the advantage that the air flow can be guided through the output shaft without loss.

[0029] The present invention is not limited to the above-mentioned feature combinations. For those skilled in the art, in particular based on the objectives proposed and / or the objectives proposed by comparison with the prior art, other reasonable combinations of the above-mentioned feature combinations and / or individual features and / or the features to be described below and / or the features of the accompanying drawings may be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Now describe the utility model in detail according to the schematic diagram:

[0031] exist Figure 1 Detailed description of the drawings: FIG. 1 is an oblique view of a reducer assembly including a reducer according to the present invention.

[0032] exist Figure 2 An oblique view of the reducer is shown in FIG.

[0033] exist Figure 3 A cross-sectional view of the reducer is shown in FIG.

[0034] exist Figure 4 An oblique cross-sectional view of the main parts of the reducer assembly is shown in FIG.

[0035] List of reference numerals:

[0036] 1 Lower housing part

[0037] 2 oil pipes

[0038] 3 air coolers

[0039] 4. Oil pipes

[0040] 5 Distributor

[0041] 6 Oil filter

[0042] 7 Output shaft, especially hollow shaft

[0043] 8First flange ring

[0044] 9First adapter ring

[0045] 10 Motor

[0046] 30 First shaft sealing ring

[0047] 31 Labyrinth seal

[0048] 33 Third shaft sealing ring

[0049] 34 Input shaft

[0050] 35 Cover

[0051] 36 Second adapter ring

[0052] 37 First bearing

[0053] 38 Second bearing

[0054] 39 sleeve parts

[0055] 40 Shaft end pump

[0056] 41 bearing cap DETAILED DESCRIPTION

[0057] As shown in the drawings, the reducer assembly has a reducer on which an air cooler 3 for oil is mounted, so that the oil delivered by the shaft end pump 40 flows from the reducer through the air cooler 3 and is cooled there by an air flow, which is delivered by a fan impeller driven by an electric motor 10.

[0058] The air cooler 3 is preferably installed on the upper side of the speed reducer.

[0059] The oil flow delivered by the shaft end pump 40 is delivered through the distributor 5 , the oil pipe 4 delivers the oil from the distributor to the air cooler 3 , and the oil also flows from the oil filter 6 to the distributor.

[0060] The shaft end pump 40 is driven by the input shaft 34 of the speed reducer. Therefore, a high rotational speed of the shaft 34 driving the shaft end pump can be provided.

[0061] The output shaft 7 of the reducer is designed, in particular, as a vertical hollow shaft. Thus, on the one hand, in particular at the bottom, the output shaft 7 can be connected to an agitator, which is fixed to a second adapter ring 36 that is connected to the output shaft 7, in particular at its axial end region, in a rotationally fixed manner.

[0062] On the other hand, a hot air flow is directed—particularly from above—through the hollow region of the output shaft 7, particularly vertically downward through the output shaft 7 designed as a hollow shaft, into the material to be stirred or mixed, for example, stones and water. Furthermore, the hot air flow conveyed into the material being thoroughly mixed by the agitator further swirls the material, particularly the stones, and facilitates stirring.

[0063] Since the heated air passes through the hollow output shaft 7, it is important to effectively cool the reducer. This cooling is ensured by the shaft end pump 40, which conveys the oil in the inner cavity area of ​​the reducer via the oil pipe 4 to the air cooler 3 and then conveys the oil cooled in the air cooler back to the inner cavity area of ​​the reducer.

[0064] A first bearing 37 , in particular an angular contact bearing pair, is accommodated in the housing lower part 1 for rotatably mounting the output shaft 7 .

[0065] The cover 35 is placed on the housing lower part 1 and is connected to the housing lower part 1 in a sealing and detachable manner.

[0066] A second bearing 38 , in particular an angular contact bearing pair, is accommodated in the cover 35 for rotatably mounting the output shaft 7 .

[0067] A first adapter ring 9 , on which a first flange ring is in turn placed, is placed on the side of the cover 35 facing away from the housing lower part 1 . The output shaft 7 passes through this first adapter ring 9 .

[0068] The area covered in the radial direction by the first flange ring 8 particularly completely includes the area covered in the radial direction by the output shaft 7. Therefore, the output shaft 7 is limited in the axial direction by the first flange ring 8.

[0069] A bearing seat for receiving a first bearing 37 is formed on the housing lower part 1 , and the inner ring of each bearing is fitted onto the output shaft 7 .

[0070] Seen from the bearing seat, the sleeve member 39 connected to the bearing seat protrudes toward the cover member 35 , particularly protruding upward on the upper side of the bearing seat. The output shaft 7 passes through the sleeve member 39 .

[0071] A non-contact labyrinth seal 31 is provided between the sleeve component 39 and the output shaft 7. The labyrinth seal 31 is preferably located above the oil level of the reducer.

[0072] A third shaft sealing ring 33 is accommodated on the side of the first bearing 37 facing away from the second bearing 38 in the axial direction and forms a seal against the output shaft 7 .

[0073] A threaded hole pattern is formed on the outer end of the first flange ring 8, which is suitable for connecting to an air guide tube, into which heated air is supplied under pressure. The connection of the air supply tube to the first flange ring 8, which is sealed against compressed air, enables loss-free supply.

[0074] The first adapter ring 9 connected to the first flange ring 8 is connected to the cover 35 and seals against the output shaft 7. For this purpose, the second shaft sealing ring is received in the first adapter ring 9 on its radial inner side and seals against the output shaft 7.

[0075] Preferably, a bearing cover 41 is arranged between the cover 35 and the first adapter ring 9 . The bearing cover is fixed on the cover 35 and limits the second bearing 38 in the axial direction.

[0076] The first adapter ring 9 forms a seal against the first flange ring 8 by means of an O-ring.

[0077] The output shaft 7 passes through a bearing cover 41 , wherein at least one first shaft sealing ring 30 is accommodated in the bearing cover 41 and forms a seal against the output shaft 7 .

[0078] The first adapter ring 9 has a larger outer diameter than the bearing cap 41. This provides a larger connection surface for the first flange ring 8. Furthermore, the protection is improved, since both the bearing cap 41 and the first adapter ring 9 form a seal against the output shaft 7. Even if one of the shaft sealing rings fails, a redundant shaft sealing ring is always available.

[0079] The end face of the first flange ring facing the environment has a step, so that the air guide tube can be placed onto the radial projection of the first flange ring 8 and thus rest against the step.

[0080] Due to the radial width of the first adapter ring 9 and therefore also of the first flange ring 8 , an air guide tube can be used whose clear inner diameter is greater than the outer diameter of the output shaft 7 .

[0081] The first shaft sealing ring received in the bearing cover 41 can be supplied with grease via radially extending channels, so that the sealing function can be ensured without interference.

[0082] The second adapter ring 36 is placed onto the output shaft 7 and is fixed to the end face of the output shaft 7 by means of axially directed screws, ie, in particular parallel to the axis of rotation of the output shaft 7 .

[0083] The second adapter ring 36 covers the output shaft 7 from the end side of the output shaft up to the portion receiving the third shaft sealing ring 33. Therefore, the adapter ring 36 covers the portion of the output shaft 7 protruding downward from the reducer and thus protects the portion of the output shaft 7 from damage.

[0084] The outer diameter of the second adapter ring 36 increases monotonically as the distance from the adapter ring to the bearing cover 41 increases. Therefore, a large torque can be transmitted to the agitator.

[0085] In other embodiments according to the present invention, the second adapter ring 36 is axially shorter, so that although less mass and moment of inertia are applied to the output shaft 7 , less protection is provided to the output shaft 7 .

Claims

1. A reducer assembly having a reducer, The reducer has a housing formed by a housing lower part and a cover placed on the housing lower part. The first bearing of the output shaft is accommodated in a sleeve-shaped or pot-shaped thickening of the housing lower part. The second bearing is received in the cover member, The second bearing is limited in the axial direction by the bearing cover connected to the cover. It is characterized by: The output shaft is designed as a hollow shaft. The bearing cap is connected to the first adapter ring on the side of the bearing cap facing away from the second bearing. The first adapter ring is connected to the first flange ring on a side of the first adapter ring facing away from the second bearing. The air inlet pipe can be connected to the first flange ring.

2. The reducer assembly having a reducer according to claim 1, It is characterized by: The first flange ring has an annular protrusion, the outer diameter of which is larger than the clear inner diameter of the output shaft.

3. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The outer diameter of the first flange ring is greater than the outer diameter of the bearing cover.

4. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The outer diameter of the first adapter ring is larger than the outer diameter of the bearing cap.

5. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: A first shaft sealing ring is accommodated in the bearing cover and forms a seal against the output shaft.

6. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: A second shaft sealing ring is received in the first adapter ring and forms a seal against the output shaft.

7. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The first flange ring is axially spaced apart from the output shaft.

8. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The second adapter ring is connected to the output shaft in a rotationally fixed manner at an end region of the output shaft facing away from the first flange ring.

9. The speed reducer assembly having a speed reducer according to claim 8, It is characterized by: The region of the output shaft protruding from the housing lower part on the side facing away from the first flange ring is covered by the second adapter ring. The second flange ring is fitted onto the output shaft.

10. The speed reducer assembly having a speed reducer according to claim 9, It is characterized by: The second flange ring is pressed onto the output shaft by a screw member, which is parallel to the rotation axis of the output shaft.

11. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The second adapter ring rests against the output shaft in a region of the output shaft that protrudes from the housing lower part on the side facing away from the first flange ring.

12. The reducer assembly having a reducer according to claim 11, characterized in that: In the region of the output shaft which protrudes from the housing lower part on the side facing away from the first flange ring, the second adapter ring rests completely on the output shaft.

13. The speed reducer assembly having a speed reducer according to claim 8, It is characterized by: In a region covered by the output shaft in the axial direction, the outer diameter of the second adapter ring increases monotonically with increasing distance from the bearing cover.

14. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The first bearing and the second bearing are each designed as an angular contact bearing pair.

15. The speed reducer assembly having a speed reducer according to claim 1 or 2, It is characterized by: A seal is arranged between the first adapter ring and the first flange ring.

16. The reducer assembly having a reducer according to claim 15, characterized in that: The seal is an O-ring.

17. The reducer assembly having a reducer according to claim 1 or 2, It is characterized by: The air supply line is connected to the first flange ring in a compressed gas-tight manner.

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