WO2012065679A2

WO2012065679A2 - Conveying apparatus, drive and manufacturing method for a conveying apparatus

Info

Publication number: WO2012065679A2
Application number: PCT/EP2011/005328
Authority: WO
Inventors: Martin Kerschbaum
Original assignee: Sew-Eurodrive Gmbh & Co. Kg
Priority date: 2010-11-15
Filing date: 2011-10-21
Publication date: 2012-05-24
Also published as: DE102010051192A1; CN103282665B; DE102010051192B4; WO2012065679A3; EP2640978B1; CN103282665A; EP2640978A2

Abstract

Conveying apparatus, drive and manufacturing method for a conveying apparatus, having a gearwheel which is connected fixedly on a shaft so as to rotate with it and the toothing of which is in engagement with the toothing of another gearwheel for conveying conveying medium between a first channel region (55) and a second channel region (56), wherein a control disc is mounted rotatably on the shaft by means of a bearing, in particular anti-friction bearing, in particular ball bearing, wherein the rotational movement of the control disc is restricted by means of a stop washer, in particular wherein the rotational axis of the control disc corresponds to the shaft axis, wherein the control disc - has a first axially extending recess for conducting conveying medium, in particular fluid, to or from the first channel region, - and has a second axially extending recess for conducting conveying medium, in particular fluid, from or to the second channel region, wherein, depending on the rotational position, the first axially extending recess of the control disc is connected to a feed channel (41, 42, 45) or a discharging channel (20, 40, 44), in particular for conducting conveying medium out of the feed channel or a discharging channel, and the second axially extending recess of the control disc is connected to a discharging channel (41, 42, 45) or feed channel (20, 40, 44), in particular for conducting conveying medium out of the feed channel or a discharging channel.

Description

Conveying device, drive and manufacturing method for a conveyor

Description: The invention relates to a conveying device, a drive and a production method for a conveying device.

It is well known that in gear pumps, two gears are engaged and upon rotation, thereby a medium is conveyed, wherein the gears

are of course provided in a recess of a part whose edge region is closely spaced the gears.

The invention is therefore the object of developing a conveyor. According to the invention, the object in the conveying device according to the in claim 1, in the drive according to the in claim 13 and in the Herstellungsververfahren according to the in

Claim 14 specified characteristics solved.

Important features of the invention in the conveying device, in particular gear pump, are that it has a rotatably connected to a shaft gear, whose

Denture with the teeth of another gear engaged to promote funding between a first channel region and a second channel region, wherein a control disk by means of a bearing, in particular rolling bearing, in particular ball bearing, rotatably mounted on the shaft, wherein the rotational movement of the control disk by means of a Stop disc is limited, in particular wherein the axis of rotation of the

Control disk corresponds to the shaft axis, wherein the control disk has a first axially extending recess for the passage of funding, in particular medium, to or from the first channel region,

CONFIRMATION COPY - And a second axially extending recess for the passage of funding, in particular medium, from or to the second

Channel region, - depending on the rotational position, the first axially extending recess of the control disc with a supply channel or a discharge channel is in communication, in particular for the passage of funding from the supply channel or a discharge channel, and the second axially extending recess of the control disc with a

Abführkanal or supply channel is in communication, in particular for the passage of funding from the supply channel or a discharge channel. The advantage here is that in each direction of rotation of the shaft, the conveying direction

is rectified. So it is a direction of rotation independent promotion of a medium allows and thus a supply of lubricant to a lubrication point in always the same way - regardless of the direction of rotation of the shaft. In addition, the conveyor device can be realized as Wellenendpumpanordnung and thus does not require its own drive. Furthermore, the switching of the channels, ie swapping the supply and discharge, in a simple manner by means of a control disc which is arranged on a bearing on the shaft and thus by the frictional forces acting on the bearing is entrained in the respective direction of rotation to the respective stop edge the stopper disc. So it is a switch in a very simple manner executable.

In an advantageous embodiment, the axial area covered by the control disk and the stop disk overlap at least partially. The advantage here is that the rotational movement of the control disk can be limited in a simple manner by means of the stop plate. For the control disc is providable in a recess of the stop disc and thus easily limited in their rotational movement regardless of the direction of rotation. The stop disc is rotatably connected to the housing part and is thus prevented from turning with the shaft.

In an advantageous embodiment, the first channel region and the second channel region and the gears are arranged in a recess of a disc, in particular in the same axial region. The advantage here is that the feeding and discharging the subsidized medium can be executed at an axial position and thus the flow rate is determined by the axial extent. The greater the axial extent, the greater the delivery rate of the gear pump arrangement. The corresponding axial extent is either one piece achievable, that is made possible by parts correspondingly thick in the axial direction, or in several pieces, ie by a plurality, in particular two or more, in the axial direction successively arranged identically shaped parts.

In an advantageous embodiment, the feed channel leads into the interior of a

Transmission housing, in particular for the passage of lubricant of the transmission to a lubrication point of the transmission, and / or in a pipe, in particular wherein the tube to a cooler, such as liquid cooler, oil cooler, water cooler or the like leads. The advantage here is that by the direction independent promotion always the same flow

relationship meadow is generated circuit. However, the delivery rate of the arrangement also decreases with decreasing speed. But since the transmission also has correspondingly lower power losses at low speed, the heat generation is lower and thus the heat to be dissipated necessarily also.

In an advantageous embodiment, the discharge channel leads into the interior of a

Transmission housing, in particular for the passage of lubricant of the transmission from an oil sump to the conveying device, and / or in a pipe, in particular wherein the tube is immersed in the oil sump of the transmission or in a cooler, such as

Liquid cooler, oil cooler, water cooler or the like leads. The advantage here is that a challenge of lubricant from the oil sump is executable and thus the subsidized stream is a radiator for cooling and / or a lubrication point of the transmission for lubrication feedable.

In an advantageous embodiment, the shaft shaft of a transmission, in particular driving shaft, in particular wherein on the shaft a toothed part of a first gear stage is rotatably connected, in particular wherein axially between the toothing part and the non-rotatably connected to the shaft gear, a bearing of the shaft is arranged, especially in one

Housing part of the transmission is arranged. The advantage here is that the spatial area of the transmission is separated by means of the bearing from the spatial area of the gear pump arrangement. Because this arrangement is attachable to the shaft end. In an advantageous embodiment, at least one housing part of the conveying device receives a bearing of the shaft and is also housing-forming for a transmission, which comprises a toothed part rotatably connected to the shaft. The advantage here is that the conveyor has an integrated transmission. In other words, the gear housing includes not only gearing parts of the transmission but also the

Gear pump arrangement.

In an advantageous embodiment, the feed channel and / or the discharge channel has a recess which extends in the circumferential direction over less than 180 °,

in particular wherein the recess is substantially semicircular and / or

is arranged in a tube. The advantage here is that by means of a rotatable

Control disk, which is arranged axially adjacent to the channel regions, an axially continuous recess of the control disk over the supply or Abführkanalbereich can be positioned - depending on the rotational position.

In an advantageous embodiment, supply channel and discharge channel are spaced from each other. The advantage here is that by passing over the spacing region in the circumferential direction, the recess of the control disk either in contact with the Zuführkanalberiech or in contact with the Abführkanalbereich can be brought.

In an advantageous embodiment, the housing part has a sleeve-shaped portion, to which a cover part is tightly and detachably connectable, so that the conveyor is surrounded by the housing forming part and cover part. The advantage here is that the sleeve-shaped portion can be shortened depending on the desired flow rate and thus depending on the desired axial length.

In an advantageous embodiment, a plurality of gears axially in succession on the shaft rotatably provided and a plurality of gears are arranged with the other gear on a common axis one behind the other, in particular wherein the housing part has a sleeve-shaped portion to which a cover member is tightly and detachably connectable, so that the conveyor, comprising the gears, is surrounded by the section and cover part forming the housing. The advantage here is that the gear pump assembly is integrated housed in the gear housing. In an advantageous embodiment, the conveyor is arranged at an axial end portion of the shaft and is connected at the other axial end portion with a rotor shaft directly or via a coupling device, in particular wherein the rotor shaft drives the shaft and thus rotatably connected thereto provided gear of the conveyor. The advantage here is that the

Gear promotion at the shaft end integrated in the housing of the transmission is providable and does not need its own drive but runs along with the shaft.

Important features of the drive, in particular gear or geared motor, with an aforementioned conveying device are that the conveying device at an axial

End region of the shaft is arranged.

The advantage here is that a shaft end pump can be realized.

Important features in the manufacturing method for such a conveyor device are that the number of axially successively arranged gears is selected, wherein the number 1 or larger is selected, a housing part of a blank, in particular raw casting, with a

sleeve-shaped portion, ie tubular extension is made by the section is cut to length according to the selected number, in particular cut off and / or turned off.

The advantage here is that simply by simply executing cutting any number of gears and thus the desired pump power inside the

sleeve-shaped, ie tubular housing portion can be accommodated.

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 options of claims and / or individual arise

Claim features and / or features of the description and / or figures, in particular from the task and / or the task posed by comparison with the prior art.

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

FIG. 1 shows a side view of the shaft end pump arrangement according to the invention.

FIG. 2 shows an associated oblique view. FIG. 3 shows an associated plan view.

FIG. 4 shows a cross section. FIG. 5 shows a further outward cross-section. In the figure 6 cross section is shown, which lies between the cross sections of Figures 4 and 5. In the figure 7 is a perpendicular thereto cross section. FIG. 8 shows a cross section twisted about the shaft axis for this purpose.

In the pumping arrangement, a shaft 47 is mounted via a bearing 48 in the housing part 3.

In this case, the housing part 3 is preferably associated with a transmission and the shaft 47 is a driving shaft of the transmission, so a fast rotating operable shaft. At an axial end region of the pump assembly is provided integrated.

The pumping arrangement operates in the manner of a gear pump. Here, a gear 53 is rotatably connected to the shaft 47 at the shaft end, which is in engagement with a gear 52 which is mounted on an axis in a connecting plate 43 with recesses (45, 46) and connection openings (20, 40, 41 , 42) and is mounted in a bearing plate 70.

The engaged gears (52, 53) convey a medium, such as lubricant of the transmission or water from an upstream feed channel 55 to a discharge channel 56. Each of these channels leads in the axial direction through a respective hole 65 of a control disk 61 in a respective recess 44 and 45 respectively. In this case, the control disk 61 is rotatably supported by means of a bearing 63 on the shaft 47. Due to friction, the control disk 61 is taken in the respective direction of rotation of the shaft 47. The control disk 61 is only in one provided for them

Recess of a stop plate 66 rotatable. This means that they are indeed taken by the rotating shaft 47 in the direction of rotation, however, only until it hits the stop plate 66th

After striking the control disk 61 to the stop disk 66, the medium is supplied in the feed or discharge channel depending on the rotational position of the control disk 61. Because the hole 65 is located axially above the recess 45 or alternatively over the recess 46 of the connection plate 43. These recesses extend in the circumferential direction in each case by less than 180 °. By means of the rotational movement of the control disk so either a flow through possibility between recess 44 and a hole 65 of the control disk 61 or between recess 45 and a hole 65 of the control disk 61 is effected. Thus, when changing the direction of rotation, the removal of the medium in the other of the recesses (44, 45) is changed. But since the direction of rotation of the

Gear wheels (52, 53) is changed, the conveying direction is also changed, so that the medium is always supplied via the connection opening (41, 42) to the recess 45 and is led out via the recess 44 into the connection opening (20, 40).

In this case, the connection opening 41 of the two merged connection openings (41, 42) serves to selectively supply the medium from an internal piping or external piping. When supplied from an internal piping, lubricant is then drawn from the oil sump of the transmission and from the gear pump comprising the gears

(52, 53), the output side conveyed into a pipe from which lubrication points are fed with the conveyed lubricant. Preferably, the engagement region of the gears is lubricated and / or a bearing lubricated. When using the external piping, the medium is supplied from an external pipe and discharged from another pipe. Thus, the gear pump for

Promotion of lubricant usable, which is conveyed by a radiator or a cooling unit. The sucked lubricant is sucked in from the oil sump of the transmission and then conveyed through the radiator. That cooled that way

Lubricant is then returned to the transmission and can be used to lubricate and / or cool parts of the transmission. The spacing of the recesses 44 and 45 in the circumferential direction is smaller than the angular amount by which the control disk 61 can reciprocate. The control disk has on its stop side a small groove 62 extending in the axial direction, which allows an axial outflow of the amount of medium to be displaced during the rotation direction change. Thus, a faster switching of the gear pump is possible. By means of the recesses 46 screws are axially feasible, which are also used as a safeguard against rotational movement of the connecting plate 43.

In the bearing plate 70, an axial end of the shaft 47 and the axis of the gear 52 is supported. The other axial end of the axis of the gear 52 is mounted in the connection plate 43.

In a further embodiment of the invention, the gear pump is also modular, so that it can be produced with scalable performance. For this purpose, the sleeve-shaped portion 1 of the housing part 3 is tapped from the blank at such a location that the desired length is reached. In the surrounded by the sleeve-like portion 1 part of the gear pump, the parts are provided according to the desired performance. For this purpose, a corresponding number of gears 52, 53 arranged axially one behind the other on the shaft 47 and the axis of the gear 52.

Correspondingly long in the axial direction, the shaft 47 and the axis of the gear 52 are executed. Likewise, disks 51 are stacked axially one on top of the other. In this way, therefore, a gear pump assembly is produced, which provides the desired capacity.

The sleeve-shaped portion 1 of the housing part 3 is in turn closed by the cover part 2, so that the gear pump assembly housing forming of the cover part 2 and the portion 1 are surrounded. LIST OF REFERENCE NUMBERS

1 sleeve-shaped portion of the housing part. 3

2 cover part

3 housing part

20 Connection opening for external piping

40 connection opening for internal piping

41 Connection opening for internal piping

42 Connection opening for external piping

43 Connection disc with recesses (45, 46) and connection openings (20, 40, 41, 42)

44 recess

45 recess

46 recess

47 wave

48 bearings

51 disc with recesses

52 gear

53 gear

55 feed channel

56 discharge channel

61 control disk

62 groove

63 bearings

64 recess

65 recess

70 bearing disc

Claims

claims:

1. conveying device, in particular gear pump, comprising a non-rotatably connected to a shaft gear whose teeth with the teeth of another gear is engaged to promote funding between a first channel region (55) and a second channel region (56), characterized in that a control disk by means of a bearing, in particular rolling bearing, in particular

Bearing is rotatably mounted on the shaft, wherein the rotational movement of the control disk is limited by means of a stop plate, in particular wherein the axis of rotation of

Control disk corresponds to the shaft axis, the control disk

- Has a first axially extending recess for the passage of funding, in particular medium, to or from the first channel region, and a second axially extending recess for the passage of funding, in particular medium, from or to the second

Channel region, - depending on the rotational position, the first axially extending recess of the control disc with a feed channel (41, 42, 45) or a discharge channel (20, 40, 44) is in communication, in particular for the passage of funding from the feed channel or a discharge channel, and the second axially extending recess of the control disk with a

Abführkanal (41, 42, 45) and feed channel (20, 40, 44) is in communication, in particular for the passage of funding from the feed channel or a discharge channel.

2. Conveyor device according to at least one of the preceding claims,

characterized in that

the axial region covered by the control disk and the stop disk overlap at least partially.

3. Conveying device according to at least one of the preceding claims,

characterized in that

first channel region and zweijter channel region and the gears are arranged in a recess of a disc (51), in particular in the same axial region.

4. Conveying device according to at least one of the preceding claims,

characterized in that

the feed channel (41, 42, 45) leads into the interior of a transmission housing, in particular for the passage of lubricant of the transmission to a lubrication point of the transmission, and / or in a pipe, in particular wherein the tube to a cooler, such as liquid cooler, oil cooler, water cooler or like that, leads.

5. Conveying device according to at least one of the preceding claims,

characterized in that

the discharge channel (20, 40, 44) leads into the interior of a transmission housing, in particular for the passage of lubricant of the transmission from an oil sump to the delivery device, and / or into a pipe, in particular wherein the pipe into the oil sump of the transmission

immersed or in a cooler, such as liquid cooler, oil cooler,

Radiator or the like leads.

6. Conveying device according to at least one of the preceding claims,

characterized in that

the shaft shaft of a transmission is, in particular driving shaft, in particular wherein on the shaft a toothed part of a first gear stage is rotatably connected, in particular wherein axially between the toothing part and the rotatably connected to the shaft gear, a bearing of the shaft is arranged, in particular in a

Housing part of the transmission is arranged.

7. Conveying device according to at least one of the preceding claims,

characterized in that

at least one housing part of the conveying device accommodates a bearing of the shaft and is also housing-forming for a gear which comprises a gear part rotatably connected to the shaft.

8. conveying device according to at least one of the preceding claims,

characterized in that

the feed channel and / or the discharge channel has a recess which extends into

Circumferential direction extends over less than 180 °,

in particular wherein the recess is substantially semicircular and / or

is arranged in a tube.

9. Conveying device according to at least one of the preceding claims,

characterized in that

Feed channel and discharge channel are spaced from each other.

10. Conveyor device according to at least one of the preceding claims, characterized in that

the housing part has a sleeve-shaped section, to which a cover part can be connected in a sealed and detachable manner, so that the conveyor is surrounded by the section and cover part forming a housing.

11. Conveyor device according to at least one of the preceding claims, characterized in that

a plurality of gears axially in succession on the shaft are rotatably provided and a plurality of gears with the other gear on a common axis are arranged one behind the other, in particular wherein the housing part has a sleeve-shaped portion to which a cover member is tightly and detachably connectable, so that the conveyor, comprising the gears, surrounded by the section and cover part forming the housing.

12. Conveying device according to at least one of the preceding claims,

characterized in that

the conveyor is arranged at an axial end portion of the shaft and is connected at the other axial end portion with a rotor shaft directly or via a coupling device, in particular wherein the rotor shaft drives the shaft and thus the rotatably connected thereto provided gear of the conveyor.

13. Drive, in particular gear or gear motor, with a conveying device according to at least one of the preceding claims,

characterized in that

the conveyor is disposed at an axial end portion of the shaft.

14. Manufacturing method for a conveyor device according to at least one of

previous claims,

characterized in that

- The number of axially successively arranged gears is selected, wherein the number is selected 1 or greater, a housing part of a blank, in particular raw casting, with a sleeve-shaped portion, ie tubular extension is made by the section is cut to length according to the selected number , in particular cut off and / or turned off.