CN215861662U

CN215861662U - Transmission device

Info

Publication number: CN215861662U
Application number: CN202120672330.0U
Authority: CN
Inventors: F·雷布哈恩; M·埃勒泽
Original assignee: Auma Drives GmbH
Current assignee: Auma Drives GmbH
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-02-18
Anticipated expiration: 2031-04-01

Abstract

The present invention relates to improvements in the field of transmission technology. In order to ensure the lubricant supply to the bearings (7) of the transmission, in particular in a relatively slowly operating transmission (1), it is proposed that a receptacle (3) is provided on a side face (4) of an engagement part (5) of the transmission (1), said receptacle being configured to receive lubricant conveyed from a lubricant sump (6) of the transmission (1) via the engagement part (5) and to convey said lubricant to at least one bearing (7) of the transmission (1).

Description

Transmission device

Technical Field

The present invention relates to a transmission device having a lubricating device.

Background

Such a transmission is known from practice. The lubrication device of such a transmission is configured for supplying a bearing with lubricant, the bearing being arranged above a lubricant groove of the transmission.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a transmission of the type mentioned at the outset, which allows improved lubrication. In order to achieve the object, a first aspect of the utility model therefore proposes, in particular, a transmission having a lubricating device, wherein the lubricating device has a receptacle which is arranged on a side face of an engagement part of the transmission and is configured to receive lubricant which is conveyed from a lubricant sump of the transmission through the engagement part and to supply the lubricant to at least one bearing of the transmission.

In order for the lubricating device of the transmission according to the utility model to function, it is necessary for the engagement elements to move, in particular rotate. While the receiver provided on the side of the engaging member has the following advantages: the lubricant is received without the engagement member having to have a certain minimum rotational speed in order to distribute the lubricant by rotation of said engagement member to such an extent that a desired amount of lubricant is obtained for said at least one bearing.

Even if the engaging member is to be rotated at a relatively low rotational speed, the receiver provided on the side of the engaging member can receive and discharge a sufficient amount of lubricant.

In order to achieve the object, a second aspect of the utility model also provides a transmission, in particular a lubricating device having a receptacle which is arranged on an engagement part of the transmission and is designed to receive lubricant which is conveyed from a lubricant sump of the transmission via the engagement part and to convey the lubricant to at least one bearing of the transmission, wherein the transmission has an adjusting means with which a distance between the engagement part and the receptacle can be adjusted.

The distance between the engagement part and the receptacle can be adjusted by the adjusting means in accordance with requirements such that a lubricant, in particular an oil film, on the engagement part can be received by means of the receptacle without centrifugation. In this way, the lubricant can be reliably supplied to the at least one bearing even at low rotational speeds, even if the at least one bearing is arranged above a lubricant sump of the transmission and/or the lubricant has a relatively low viscosity due to operating temperatures.

It is to be mentioned here that an embodiment of the transmission combines the features and characteristics of the two aspects described above with one another. Thus, in this transmission, it is provided that: the receptacle of the lubricating device is arranged on the side of the engagement part of the transmission and is configured to receive lubricant conveyed from a lubricant sump of the transmission through the engagement part and to convey the lubricant to at least one bearing of the transmission, wherein the transmission has an adjusting means with which the distance between the engagement part and the receptacle can be adjusted.

The engagement elements of the gear can be, for example, gears, in particular spur gears. The side faces of the engagement member may be oriented transversely to the axis of rotation of the engagement member or at right angles to the axis of rotation of the engagement member.

In one embodiment of the transmission, the receptacle can be arranged at the level of or below the tooth flanks of the engaging part. In this case, the receiver (in particular the perpendicular projection of the receiver onto the gear part) can be arranged at least partially between the tip circle and the root circle of the toothing of the gear part.

Experiments have shown that a major share of the lubricant supply can be produced in the following manner: lubricant is received between the teeth of the toothing of the gear from a lubricant sump of the transmission, said lubricant flowing out to the outside at the tooth root when the teeth have reached an upper position. The lubricant flowing laterally away from the tooth root between the teeth can then be accommodated particularly reliably by the receptacle and can be supplied to the at least one bearing of the transmission via the receptacle.

The adjustment means, which have been mentioned before, may be configured for adjusting the position of the engagement member relative to the receiver or the position of the receiver relative to the engagement member. The axial position of the engagement element relative to the receptacle within the housing of the transmission can be adjusted, for example, axially by the adjusting means.

In a particularly advantageous embodiment of the transmission, the receptacle is configured for bidirectionally receiving lubricant for both directions of rotation of the engagement member. In this way, it is possible to receive lubricant from the engagement member with a single receiver, irrespective of which direction the engagement member is rotated.

The lubricating device may comprise a lubricant distributor. The lubricant distributor can be connected to the receptacle and has at least two different connections for supply lines. With such a lubricant distributor, it is possible to supply lubricant to different lubrication points of the transmission without changing the position of the receptacle.

In this way, by means of the lubricant distributor, it is possible to use the same receptacle on different transmissions, if required, without having to change the receptacle or the lubricant distributor in terms of construction.

The at least one bearing to be lubricated may be indirectly connected with the receptacle or the lubricant distributor at least via a supply line. As the supply line, for example, a tank, a guide plate, a pipe, or a hose connection structure may be used.

Different bearing types may have different lubricant requirements. The maximum delivery of lubricant from the receiver to the at least one bearing may be predetermined by selecting the respective supply line. If the bearing to be lubricated has a greater demand for lubricant, a supply line of slightly larger diameter may be used in order to ensure that a sufficient amount of lubricant is supplied to the bearing.

If a further bearing is to be supplied with lubricant at the same time, which, however, has a lower lubricant requirement, a further supply line can be connected to the lubricant distributor, which further supply line has a smaller diameter than the first-mentioned supply line. In this way it is ensured that the second bearing to be supplied with lubricant obtains a smaller amount of lubricant than the first-mentioned bearing.

The adjustment means may be configured for mechanically adjusting the position of the receiver relative to the engagement member. The receiver may be arranged in a housing of the transmission.

Preferably, however, the adjustment means is configured for mechanically adjusting the position of the engagement member relative to the receiver. For this purpose, the adjusting means can be, for example, an adjusting shim, with which the position of the engagement part relative to the receptacle, in particular the position of the engagement part together with the shaft of the engagement part, relative to the receptacle, can be adjusted.

By means of such a shim, the bearing clearance of the bearing seat of the engagement piece can first be adjusted by inserting at least one shim at the side of the bearing seat of the engagement piece. The distance between the engaging member and the receptacle can then be adjusted by: a spacer shim is inserted on at least one side or even on both sides of the bearing seat of the engagement member in order to move the shaft (on which the engagement member is located) axially to a desired extent relative to the preferably stationary receiver.

In a transmission in which an adjustment of the distance between the receptacle and the engagement element cannot be achieved, it can be advantageous if the distance between the engagement element and the receptacle is at least 3mm and at most 4 mm. In this way, the lubricant can be satisfactorily received from the engaging member without the risk of collision between the engaging member and the receiver. In this connection, it can be advantageous if, during operation of the transmission, the engagement part is moved at a relatively high rotational speed, so that lubricant can splash off the engagement part.

In particular, when the transmission enables an adjustment of the distance between the receptacle and the engagement element, it may be advantageous for the distance between the engagement element and the receptacle to be between 0mm and 1.5mm, in particular between 0.5mm and 1.5mm or between 0.5mm and 1 mm. Due to the adjustability of the distance, it is possible to precisely predetermine the distance at the start of operation of the transmission taking into account the actual dimensions of the transmission and its components. This is beneficial for receiving as large a quantity of lubricant as possible without risk of collision between the engaging member and the receptacle.

The receiver may be made of plastic. On the one hand, this enables a cost-effective manufacture of the receiver. On the other hand, the receptacle is now made of a softer material than the engaging part, which prevents the engaging part from being damaged in the event of possible contact between receptacle and engaging part.

The receiver may be fixed within the housing of the transmission and is preferably fixed in position. Preferably, the receiver is screwed into a blind hole that opens inwardly. In this way, an outer structure on the housing of the transmission in the region of the fastening point of the receiver is avoided.

In one embodiment of the transmission, it is provided that the receiver is fastened in a suspended manner, in particular on a cover of the transmission. It is particularly advantageous to fix the receiver with a captive screw. The use of so-called anti-fall screws is advantageous, since loose screws can be prevented from falling out of the interior of the gear and damaging the gear by means of the anti-fall screws.

The anti-dropout screw may have a thread on its free end and a reduced diameter between the thread and the head. Such a screw can first be screwed through a threaded hole of a component (for example the receiver or a plate or steel plate) to which the screw is to be applied for its fixing, and then the screw can be inserted further into the blind hole and fixed there. If the screw is loosened, the screw falls out through the threaded bore up to the threaded section at most, when the component, in this case the receiver, is held by a further screw. The receiver may be fixed by two, three or preferably four screws, for example.

In one embodiment of the transmission, the transmission has a worm gear or hypoid gear or bevel gear stage as the input stage. The at least one bearing to be lubricated may be a bearing of the input shaft of the transmission and/or be arranged above a lubricant sump of the transmission.

In one embodiment of the transmission, the receiver is arranged on an engagement member of an output shaft of the transmission. The at least one bearing to be lubricated can be a rolling bearing, for example a groove ball bearing or a tapered roller bearing, or also a sliding bearing or another bearing.

As lubricant, preferably oil, in particular transmission oil, can be used.

Drawings

The utility model is described in more detail below with the aid of examples. Further embodiments of the utility model result from the combination of the features of the individual claims with one another and/or the individual features of the embodiments. In the figure:

fig. 1 shows a cut-away side view of a transmission, wherein a receptacle is provided on a side face of an engagement piece of the transmission, which receptacle is connected via a supply line with a bearing of an input shaft of the transmission to be lubricated and is configured for receiving lubricant from the engagement piece,

fig. 2 shows a sectional side view of the transmission, rotated by 90 ° compared to fig. 1, in which the shaft on which the engagement part assigned to the receptacle is arranged can be clearly seen, wherein the axial position of the shaft and the engagement part within the housing of the transmission can be changed in order to change the distance between the engagement part and the receptacle fixed on the housing of the transmission, and

fig. 3 shows a partially cut-away top view of the transmission shown in fig. 1 and 2.

Detailed Description

All the figures show a transmission device indicated as a whole with 1. The transmission 1 has a lubricating device 2. The lubricating device 2 comprises a receptacle 3 which is arranged against a side 4 of an engagement part 5 of the transmission 1 and is configured for receiving lubricant which is conveyed from a lubricant sump 6 of the transmission 1 through the engagement part 5 and for supplying said lubricant to at least one bearing 7 of the transmission 1.

For adjusting the distance between the engagement part 5 and the receptacle 3, the transmission 1 has an adjusting means 8. The engagement part 5 of the transmission 1, against the side 4 of which the receptacle 3 is positioned, is a gear wheel, i.e. a spur gear. The side faces 4 of the engagement part 5 are oriented transverse to the axis of rotation of the engagement part 5 or at right angles thereto.

The receiver 3 is arranged at the level of the tooth flank 9 of the tooth system 5, so that the perpendicular projection of the receiver 3 onto the flank 4 of the tooth system 5 is arranged at least partially between the tip circle and the root circle of the toothing of the tooth system 5.

In one embodiment of the transmission 1, the receiver 3 can also be arranged below the tooth flank 9 of the toothing 5 and thus below or within the root circle of the toothing 5.

The adjusting means 8 of the transmission 1 shown in the figures are configured for axially adjusting the position of the engaging member 5 in the housing 10 of the transmission 1 relative to the receptacle 3 which is fixedly secured in position on the housing 10. In particular, the adjustment means 8 are configured for mechanically adjusting the position of the engagement member 5 relative to the receiver 3. The adjusting means 8 of the transmission 1 shown in the figures are adjusting shims with which the position of the engagement part 5 and its shaft 11 in the housing 10 relative to the receptacle 3 can be adjusted.

The receptacle 3 of the transmission 1 shown in the figures is configured to receive lubricant bidirectionally for both directions of rotation of the engagement member 5. In this way, the receptacle 3 can be used to receive lubricant and supply it to the bearing 7, independently of the direction of rotation of the engaging piece 5.

The lubrication device 2 further comprises a lubricant distributor 12. The lubricant distributor 12 is connected to the receptacle 3 and has at least two different connections 13 for a supply line 14. In a transmission 1 which does not allow the distance between the engaging piece 5 and the receptacle 3 to be adjusted, the distance between the engaging piece 5 and the receptacle 3 can advantageously be adjusted to at least 3 mm. In this way, collision between the engaging piece 5 and the receiver 3 is effectively avoided.

If the distance between the engaging member 5 and the receptacle 3 can be adjusted, it is advantageous: for example, when the transmission 1 is started, the distance is adjusted to a distance of between 0mm and 1.5mm, in particular between 0.5mm and 1.5mm, or between 0.5mm and 1 mm.

The receptacle 3 shown in the drawings is made of plastic. Even if a collision should occur between the receptacle 3 and the engagement part 5, the engagement part 5 is not damaged by the softer receptacle 3.

As already mentioned above, the receiver 3 is fixed in the housing 10 of the transmission 1. According to the figures, this is preferably achieved by screwing the receiver 3 in a blind hole 19 of the housing 10, wherein the blind hole 19 is open to the inside.

The receiver 3 shown in the figures is fixed in a suspended manner on a cover 15 of the transmission 1 and is also fixed with a captive screw 16. The transmission 1 has a worm gear 17 as an input stage. Depending on the embodiment of the transmission 1, it is also possible for the transmission 1 to have a hypoid gear or bevel gear stage or another transmission stage as the input stage.

The bearing 7 of the transmission 1 to be lubricated is a bearing of the input shaft 18 of the transmission 1 and is also arranged above the lubricant sump 6 already mentioned.

The shaft 11 on which the engagement part 5 is arranged, to which the receptacle 3 is assigned, is the output shaft of the transmission 1.

The bearing 7 to be supplied with lubricant is connected via the previously mentioned supply line 14 to the lubricant distributor 12 and via said lubricant distributor to the receptacle 3 of the transmission 1. The bearing 7 is a rolling bearing, i.e., a groove ball bearing.

The present invention relates to improvements in the field of transmission technology. In order to ensure the lubricant supply to the bearings 7 of the transmission, in particular also in relatively slowly running transmissions 1, it is proposed that a receptacle 3 is provided on the side of the engagement part 5 of the transmission 1, which receptacle is configured to receive lubricant conveyed from the lubricant sump 6 of the transmission 1 through the engagement part 5 and to supply said lubricant to at least one bearing 7 of the transmission 1.

List of reference numerals

1 Transmission device

2 lubricating device

3 receiver

4 side surface

5 engaging member

6 Lubricant groove

7 bearing

8 adjusting device

9 tooth surface

10 casing

11 axle

12 Lubricant distributor

13 interface

14 supply line

15 cover

16 screw

17 worm gear and worm transmission mechanism

18 input shaft

19 blind hole

Claims

1. Transmission (1) with a lubricating device (2), characterized in that the lubricating device (2) has a receptacle (3) which is arranged on a side face (4) of an engagement part (5) of the transmission (1) and is configured for receiving lubricant which is conveyed from a lubricant sump (6) of the transmission (1) through the engagement part (5) and for conveying the lubricant to at least one bearing (7) of the transmission (1).

2. Transmission (1) according to claim 1, characterized in that the transmission (1) has an adjusting means (8) with which the distance between the engaging member (5) and the receiver (3) can be adjusted.

3. Transmission (1) according to claim 1 or 2, characterized in that the engagement member (5) is a gear wheel and/or that the side faces (4) of the engagement member (5) are oriented transversely to the axis of rotation of the engagement member (5) or at right angles to it.

4. Transmission (1) according to claim 3, characterized in that said engagement member (5) is a spur gear.

5. Transmission (1) according to claim 3, characterized in that the receptacle (3) is arranged at the level of or below a tooth flank (9) of the toothing (5) and/or is arranged at least partially between a tip circle and a root circle of a tooth of the toothing (5).

6. Transmission (1) according to claim 2, characterized in that said adjustment means (8) are configured for adjusting the position of said engagement member (5) with respect to said receptacle (3).

7. Transmission (1) according to claim 6, characterized in that said adjustment means (8) are configured for axially adjusting the position of said engagement member (5) with respect to said receptacle (3).

8. Transmission (1) according to claim 6 or 7, characterized in that said adjustment means (8) are configured for adjusting the position of said engagement member (5) in a housing (10) of said transmission (1) with respect to said receiver (3).

9. Transmission (1) according to claim 2, characterized in that the adjusting means (8) are configured for mechanically adjusting the position of the receptacle (3) relative to the engagement member (5) or the position of the engagement member relative to the receptacle, and/or in that the adjusting means (8) are adjusting shims with which the position of the engagement member (5) relative to the receptacle (3) can be adjusted.

10. Transmission (1) according to claim 9, characterized in that the position of the engagement member (5) together with its shaft (11) relative to the receptacle (3) can be adjusted by means of the adjusting shim.

11. Transmission (1) according to claim 1 or 2, characterized in that said receptacle (3) is configured for bidirectionally receiving lubricant for both directions of rotation of said engagement member (5).

12. Transmission (1) according to claim 1 or 2, characterized in that the lubricating device (2) comprises a lubricant distributor (12) which is connected to the receptacle (3) and has at least two different connections (13) for a supply line (14).

13. Transmission (1) according to claim 1 or 2, characterized in that the distance between the engaging member (5) and the receptacle (3) is at least 3mm and at most 4 mm.

14. Transmission (1) according to claim 1 or 2, characterized in that the distance between the engaging member (5) and the receptacle (3) is between 0mm and 1.5 mm.

15. Transmission (1) according to claim 14, characterized in that the distance between the engagement member (5) and the receptacle (3) is between 0.5mm and 1.5 mm.

16. Transmission (1) according to claim 15, characterized in that the distance between the engagement member (5) and the receptacle (3) is between 0.5mm and 1 mm.

17. Transmission (1) according to claim 1 or 2, characterized in that said receptacle (3) is made of plastic.

18. Transmission (1) according to claim 1 or 2, characterized in that the receiver (3) is fixed within a housing (10) of the transmission (1).

19. Transmission (1) according to claim 18, characterized in that said receiver (3) is screwed in a blind hole (19) open to the inside.

20. Transmission (1) according to claim 18, characterized in that the receiver (3) is fixed in a suspended manner and/or in that it is fixed with a loss-proof screw (16).

21. Transmission (1) according to claim 20, characterized in that said receptacle (3) is fixed in such a way as to be suspended on a cover (15) of said transmission (1).

22. Transmission (1) according to claim 1 or 2, characterized in that the transmission (1) has a worm gear (17) or hypoid gear or bevel gear stage as input stage and/or in that the at least one bearing (7) is a bearing of the input shaft (18) of the transmission (1) above the lubricant sump (6).

23. Transmission (1) according to claim 1 or 2, characterized in that the receiver (3) is arranged on the engagement member (5) of the output shaft.

24. Transmission (1) according to claim 1 or 2, characterized in that the at least one bearing (7) is connected with the receptacle (3) and/or lubricant distributor (12) via a supply line (14) and/or is a rolling bearing or a plain bearing.

25. Transmission (1) with a lubricating device (2), characterized in that the lubricating device (2) has a receptacle (3) which is arranged on an engagement element (5) of the transmission (1) and is configured for receiving lubricant which is conveyed from a lubricant sump (6) of the transmission (1) through the engagement element (5) and for conveying the lubricant to at least one bearing (7) of the transmission (1), the transmission (1) having an adjusting means (8) with which the distance between the engagement element (5) and the receptacle (3) can be adjusted.

26. Transmission (1) according to claim 25, characterized in that said engagement members (5) are gears.

27. Transmission (1) according to claim 26, characterized in that said engagement member (5) is a spur gear.

28. Transmission (1) according to claim 26 or 27, characterized in that the receptacle (3) is arranged at the level of or below a tooth flank (9) of the toothing (5) and/or is arranged at least partially between a tip circle and a root circle of the teeth of the toothing (5).

29. Transmission (1) according to one of claims 25 to 27, characterized in that said adjustment means (8) are configured for adjusting the position of said engagement member (5) with respect to said receptacle (3).

30. Transmission (1) according to claim 29, characterized in that said adjustment means (8) are configured for axially adjusting the position of said engagement member (5) with respect to said receptacle (3).

31. Transmission (1) according to claim 29, characterized in that said adjustment means (8) are configured for adjusting the position of said engagement member (5) in a housing (10) of said transmission (1) with respect to said receiver (3).

32. Transmission (1) according to one of claims 25 to 27, characterized in that the adjusting means (8) are configured for mechanically adjusting the position of the receiver (3) relative to the engaging member (5) or the position of the engaging member relative to the receiver, and/or in that the adjusting means (8) are adjusting shims with which the position of the engaging member (5) relative to the receiver (3) can be adjusted.

33. Transmission (1) according to claim 32, characterized in that the position of the engagement member (5) together with its shaft (11) relative to the receptacle (3) can be adjusted by means of the adjusting shim.

34. Transmission (1) according to one of claims 25 to 27, characterized in that the receptacle (3) is configured for bidirectionally receiving lubricant for both directions of rotation of the engagement member (5).

35. Transmission (1) according to one of claims 25 to 27, characterized in that the lubricating device (2) comprises a lubricant distributor (12) which is connected to the receptacle (3) and has at least two different connections (13) for a supply line (14).

36. Transmission (1) according to one of claims 25 to 27, characterized in that the distance between the engaging member (5) and the receptacle (3) is at least 3mm and at most 4 mm.

37. Transmission (1) according to one of claims 25 to 27, characterized in that the distance between the engaging member (5) and the receptacle (3) is between 0mm and 1.5 mm.

38. Transmission (1) according to claim 37, characterized in that the distance between the engagement member (5) and the receptacle (3) is between 0.5mm and 1.5 mm.

39. Transmission (1) according to claim 38, characterized in that the distance between the engagement member (5) and the receptacle (3) is between 0.5mm and 1 mm.

40. Transmission (1) according to one of claims 25 to 27, characterized in that the receptacle (3) is made of plastic.

41. Transmission (1) according to one of the claims 25 to 27, characterized in that the receiver (3) is fixed within a housing (10) of the transmission (1).

42. Transmission (1) according to claim 41, characterized in that said receiver (3) is screwed in a blind hole (19) open to the inside.

43. Transmission (1) according to claim 41, characterized in that the receiver (3) is fixed in a suspended manner and/or in that it is fixed with a loss-proof screw (16).

44. Transmission (1) according to claim 43, characterized in that said receptacle (3) is fixed in such a way as to be suspended on a cover (15) of said transmission (1).

45. Transmission (1) according to one of claims 25 to 27, characterized in that the transmission (1) has a worm gear (17) or a hypoid gear or a bevel gear stage as an input stage and/or in that the at least one bearing (7) is a bearing of the input shaft (18) of the transmission (1) above the lubricant sump (6).

46. Transmission (1) according to one of the claims 25 to 27, characterized in that the receiver (3) is arranged on the engagement member (5) of the output shaft.

47. Transmission (1) according to one of claims 25 to 27, characterized in that the at least one bearing (7) is connected with the receptacle (3) and/or lubricant distributor (12) via a supply line (14) and/or is a rolling bearing or a plain bearing.