Double axle drive

Abstract

A double axle drive includes at least one driving motor arranged between two drive axles, wherein the axis of rotation thereof extends transversely, in particular perpendicularly to the drive axles, where a wheel set shaft is drivable via a drive shaft of the driving motor via each transmission, and where the entire double axel drive is arranged in a housing unit that includes two housing parts.

Claims

1. A double axle drive, comprising: a plurality of drive axles; and a single drive motor having a stator laminated core arranged in a rotatably fixed manner within a single housing unit having two housing sections connected to one another at a flange surface in a region of the stator laminated core, said single drive motor being arranged between the plurality of drive axles, and an axis of rotation of said drive motor extending transversely to the plurality of drive axles; wherein a wheel set shaft is drivable via a drive shaft of the single drive motor via each transmission; and wherein an entirety of the double axle drive is arranged in the single housing unit having the two housing sections.

2. The double axle drive as claimed in claim 1, wherein the transmission is an angular transmission or a hypoid transmission.

3. The double axle drive as claimed in claim 2, wherein the two housing sections have flange surfaces facing one another, upon which the two housing sections are fixable; and wherein the flange surfaces extend perpendicularly or parallel to the drive shaft.

4. The double axle drive as claimed in claim 1, wherein the two housing sections have flange surfaces facing one another, upon which the two housing sections are fixable; and wherein the flange surfaces extend perpendicularly or parallel to the drive shaft.

5. The double axle drive as claimed in claim 4, wherein the flange surface are arranged axially externally to a stator laminated core of the drive motor.

6. The double axle drive as claimed in claim 1, wherein the transverse direction is a direction perpendicular to the plurality of drive axles.

7. The double axle drive as claimed in claim 1, wherein one housing section of two housing sections includes a coolant inlet and another housing section of the two housing sections includes a plurality of outlets.

8. The double axle drive as claimed in claim 7, wherein the coolant inlet and the plurality of coolant outlets allow a coolant to flow across at least the stator laminated core.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention plus other advantageous embodiments of the invention are explained in greater detail below using basic illustrations of exemplary embodiments, in which:

(2) FIG. 1 shows a longitudinal section with a centrally arranged flange in accordance with the invention; and

(3) FIG. 2 shows a longitudinal section with an eccentrically arranged flange in accordance with an embodiment of the invention.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

(4) FIG. 1 shows a longitudinal section of a double axle drive, which is suitable both as a center drive and also as an external longitudinal drive, in particular for low-floor vehicles. In this case, a drive motor 3 is arranged between two drive axles 14 and has a stator laminated core 4 and a rotor laminated core 5 surrounding a rotor shaft 7. Here, the rotor shaft 7, which can rotate about an axis of rotation 6, is mounted via bearings 9. The stator laminated core 4 is accommodated in a rotatably fixed manner in a housing unit 15. The housing unit 15 is divided into two housing sections 16 and 17, which can be connected to one another on a flange surface 10. In the present case, the flange surface 10 of the flange is located in the region of the stator laminated core 4.

(5) In each case, parts of the drive motor 3, clutch 8, bearing unit 23 for transmission 18 and drive motor 3 are in the housing sections 16, 17. In addition, a brake can be arranged in at least one of the housing sections 16, 17, in particular between clutch 8 and drive motor 3. Air guidance devices for cooling air flows can optionally be provided on or in the housing sections 16, 17, as also can coolant inlets 11 or coolant outlets 12 on the casing of the housing sections 16, 17.

(6) In an advantageous further embodiment shown in FIG. 2, the flange surfaces 10 of the flange are located axially externally to the stator laminated core 4. Thus, the stator laminated core 4 has an uninterrupted seating in a housing section. This simplifies the ability to disassemble the housing sections 16, 17. Thus, for example, electrical connections of the winding system of the drive motor 3 can be particularly favorably accessibly arranged on one side of the stator laminated core 4.

(7) Arranged in the housing section 16 are, among other things, the drive motor 3, the clutch 8, a bearing unit 23 for transmission 18 and drive motor 3, and optionally a brake. Arranged in the other housing section 17 are the clutch 8 and a bearing unit 23 for the transmission 18. Air guidance devices for cooling air flows can, in each case, optionally be provided on or in the housing sections 16, 17, as also can coolant inlets 11 or coolant outlets 12 on the casing of the housing sections 16, 17.

(8) In the housing unit 15, in particular in the housing sections 16 and 17, air inlets 11 and/or air outlets 12 are each provided in the wall of the housing sections 16, 17. Likewise, in each case, a clutch 8, both to one drive axle 14 and also to the other drive axle 14, is arranged inside the housing unit 15. The entire housing unit 15 is positioned via springs 13 in a bogie (not shown in greater detail) of a rail vehicle.

(9) The respective housing sections 16, 17 likewise each accommodate the bearing arrangements 12 in corresponding bearing seats of the housing sections 16, 17, which are preferably located between transmission 18 and clutch 8.

(10) The respective housing sections 16, 17 project axially (when viewed from the drive motor 3) above the drive axles 14. Here, the housing sections 16, 17 surround their respective drive axle 14 both in accordance with FIG. 1 and also in accordance with FIG. 2 up to 180 degrees. In other words, a notional extension of the flange surfaces of the flange 21 extends through the respective drive axle 14.

(11) Assembly is comparatively simple even with angles of less than 180 degrees.

(12) The housing sections 16, 17 are each closed by a transmission cover 20, which is attached to the respective housing section 16, 17 via flange connections 21. The transmission covers 20 each have a maintenance opening 22.

(13) A wheel or a wheel set having two wheels is driven via the drive axle 14 via a transmission 18, in each case. The drive axle of the wheels or of the wheel sets in this case extends essentially perpendicularly to the axis of rotation 6 of the drive motor 3.

(14) Thus, while there have been shown, described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.