Drive arrangement

Abstract

Drive arrangement wherein a rotor shaft (41) is connected to a hub part (51) in a rotationally fixed manner, wherein the rotor shaft (41) is driven by an asynchronous motor, synchronous motor or reluctance motor, wherein packages are arranged on the hub part (51), wherein each package has two disks (1) which are spaced apart from each other by a spacer sleeve (6), wherein the packages are arranged axially one behind the other and are stacked, wherein the spacer sleeve (6) is arranged between the two respective disks (1) of each package. wherein each disc (1) is screwed together with a corresponding spacer sleeve (6) of a respective package wherein a locking washer is screwed to the rotor shaft (41) for axial securing, the locking washer securing the hub part (51) axially at least on one side, wherein the hub part (51) is axially secured on its other axial side by means of a shaft shoulder of the rotor shaft (41), wherein permanent magnets (2) are arranged on each disk (1).

Description

[0001] The invention relates to a drive arrangement.

[0002] In an arrangement with permanent magnets rotating past a metallic reaction part, eddy currents are induced and thus forces can be generated.

[0003] In this regard, DE 10 2008 031 153 A1 discloses as the closest prior art a monorail vehicle with a disc driven by a motor and having permanent magnets.

[0004] The invention is therefore based on the objective of further developing a drive arrangement that is optimally adapted to the requirements of the respective system.

[0005] According to the invention, the problem is solved in the drive arrangement according to the features specified in claim 1.

[0006] Important features of the invention in the drive arrangement according to claim 1 are that a rotor shaft is connected to a hub part in a rotationally fixed manner, in particular by means of a friction-fit connection, a positive-fit connection and / or a keyway connection, wherein at least one package is arranged on the hub part, wherein each package comprises at least two disks, in particular two disks each, which are spaced apart from each other by a spacer sleeve, in particular wherein the packages are arranged axially one behind the other, in particular stacked.

[0007] A key advantage is that one or more packages can be mounted axially one behind the other on the rotor shaft, thus generating a correspondingly large driving force depending on the application, i.e., the number of reaction components arranged parallel to the rail. Each package has two magnet-equipped discs, which enable the generation of driving force. The discs are simply spaced apart from each other by means of a spacer sleeve, counteracting the attractive force exerted by the nearest opposing permanent magnets.

[0008] By forming packages, these components can be stored as modules and then used in a drive arrangement as needed. For low drive force, only one package is connected to the rotor shaft; for higher drive force, two or more packages are connected. This creates a modular system with which a wide variety of drive arrangements can be manufactured. However, to generate higher forces, a corresponding number of reaction components must also be provided in the rail direction, corresponding to the number of packages.

[0009] Important features of the invention in the drive arrangement according to claim 2 are that a rotor shaft is connected to a hub part in a rotationally fixed manner, in particular by means of a keyway connection, wherein discs, in particular two discs each, are arranged on the hub part, which are spaced apart from each other by a spacer sleeve.

[0010] An advantage of this design is that two discs, whose permanent magnets are arranged on opposite end faces, attract each other, thus preventing any long-range magnetic field from being generated. The drive mechanism is therefore magnetically shielded when viewed from a distance. In this way, even a single unit—that is, two discs spaced apart by the accompanying spacer sleeve—is easily transportable and storable, as only weak magnetic forces act on other magnetic objects and / or such units.

[0011] In an advantageous embodiment, permanent magnets are arranged on each disk, in particular connected by a material bond and / or a form-fit connection. The advantage here is that the permanent magnets remain fixed even at high rotational speeds and thus centrifugal forces.

[0012] In an advantageous embodiment, the permanent magnets are regularly spaced apart in the circumferential direction and / or arranged on the opposing end faces of the disks and / or arranged at the same radial distance. This is advantageous because it allows for simple manufacturing and generates a uniform driving force during rotation.

[0013] In an advantageous embodiment, the spacer sleeve is arranged between the two respective disks, particularly within each stack. It is advantageous that the spacing, which opposes the magnetic forces acting on the disks, can be easily achieved using the spacer sleeve, which is preferably made of metal, especially steel or aluminum.

[0014] In an advantageous embodiment, each disc is screwed to its corresponding spacer sleeve, in particular to a respective stack. The advantage here is that several screws can be arranged in the circumferential direction, thus enabling a stable screw connection.

[0015] In an advantageous embodiment, the hub part is screwed to the respective spacer sleeve and / or washers, particularly those belonging to the respective assembly, in particular wherein a screw used is arranged at a non-zero radial distance and / or is screwed into a threaded bore of the hub part, in particular wherein the screw head presses the washers and at least one spacer sleeve onto the hub part, particularly in the axial direction. An advantage of this is that a secure and stable fastening can be achieved.

[0016] In an advantageous embodiment, the rotor shaft of an asynchronous motor, synchronous motor and / or reluctance motor is driven.

[0017] In an advantageous embodiment, a locking washer is screwed to the rotor shaft for axial securing, wherein the locking washer secures the hub part axially at least on one side, in particular wherein the hub part is axially secured on the other axial side by means of a shaft shoulder of the rotor shaft. An advantage of this is that axial securing can be implemented in a simple manner.

[0018] In an advantageous embodiment, a metallic reaction element, in particular a sword-shaped reaction element, is arranged in the spacing area between the disks, in particular between the opposing permanent magnets of the disks. In particular, the discs are arranged to be movable along the reaction part, especially on a mobile part which is guided by a rail along the reaction part. An advantage of this arrangement is that high driving forces can be generated. In particular, the rail can be integrally formed with the reaction part, thus enabling a compact arrangement for generating high driving forces.

[0019] Further advantages arise from the sub-claims.

[0020] The invention will now be explained in more detail with the help of illustrations: In the Fig. Figure 1 shows a pole wheel disk arrangement in oblique view and in section, wherein two disks 1, each equipped with permanent magnets (2, 3), are spaced apart from each other and connected by a spacer sleeve 6. In the Fig. Figure 2 shows a corresponding top view. In the Fig. 3 is a corresponding section according to the section planes according to Fig. 1 shown. In the Fig. Figure 4 shows a drive which has a pole wheel disk arrangement driven by an electric motor in oblique view and in section, wherein four disks 1, each equipped with permanent magnets (2, 3), are spaced apart from each other and connected by means of a respective spacer sleeve 6. In the Fig. Figure 5 shows a corresponding cross-section. In the Fig. Figure 6 shows a drive which has a pole wheel disk arrangement driven by an electric motor in oblique view and in section, wherein two disks 1, each equipped with permanent magnets (2, 3), are spaced apart from each other and connected by respective spacer sleeves 6. In the Fig. Figure 7 shows a corresponding cross-section without the driving electric motor. In the Fig. Figure 8 shows a drive which has a pole wheel disk arrangement driven by an electric motor in oblique view and in section, wherein two disks 1, each equipped with permanent magnets (2, 3), are spaced apart from each other and connected by respective spacer sleeves 6. In the Fig. Figure 9 shows a corresponding cross-section without the driving electric motor.

[0021] The one in Fig. The pole wheel assembly shown in 1 is non-rotatably connected to a rotor shaft of an electric motor and thus set into rotation by the motor. The electric motor is mounted on a rail-guided mobile unit. A sword-shaped metal part is arranged in the direction of the rail, projecting between the two discs 1 of the pole wheel assembly such that the permanent magnets (2, 3) attached to the discs 1, rotating past the metal part, induce eddy currents and thus generate a driving force for the mobile unit in the direction of the rail.

[0022] The permanent magnets 2 are attached to a first disk 1 and the permanent magnets 3 to a second disk 1, whereby these two disks 1 are kept at a distance in the axial direction, i.e. in the direction of the rotor shaft axis of the driving electric motor, by means of the spacer sleeve.

[0023] The permanent magnets (2, 3) are arranged on the opposing end faces of the disks 1. The permanent magnets (2, 3) are preferably of the same type and are bonded to the disk 1 by material bonding, in particular by means of an adhesive, and / or by positive locking. A fastening element 4 is provided for positive locking. Thus, the permanent magnets (2, 3) are arranged in respective recesses of the disks 1 and are therefore positively locked in the circumferential and radial directions.

[0024] In the circumferential direction, the permanent magnets (2, 3), arranged at the same radial distance, are uniformly spaced from one another and magnetized in the opposite direction to their nearest neighboring permanent magnet. The preferred magnetization direction is in or against the axial direction.

[0025] The permanent magnets (2, 3) are preferably cuboid in shape, with the longer extension being oriented in a substantially radial direction.

[0026] The discs 1 are screwed to the spacer sleeve 6, in particular using the countersunk screw 5. The countersunk screw is aligned in the axial direction and guided through a hole in the respective disc 1 and screwed into a correspondingly axially aligned threaded bore in the spacer sleeve 6.

[0027] By means of further holes 20, in particular axially aligned through holes, it is possible to screw several discs connected via the spacer sleeve 6 to a hub part provided on the rotor shaft of an electric motor.

[0028] The hub part is preferably positively connected to the rotor shaft.

[0029] As in Fig. 4 together with Fig. As shown in Figure 5, a hub part 51 is provided on the rotor shaft 41 of the electric motor, which is rotatably mounted in the electric motor housing 40. This hub part is positively connected to the rotor shaft in the circumferential direction by means of a keyway connection, i.e., it is non-rotatably connected.

[0030] On the hub part 51, two pairs of discs 1, spaced apart from each other by means of spacer sleeves 6, are screwed together. For this purpose, the screw 50 is guided through axially aligned recesses in the spacer sleeves, and the two axially arranged pairs, together with their associated spacer sleeves 6, are screwed to a shoulder of the hub part 51. For this purpose, a threaded bore is provided in the hub part 51, in particular in the shoulder of the hub part 51, into which the respective screw 50 is screwed.

[0031] The screw 50 is therefore preferably designed as a threaded screw. The screw head thus presses the pairs of washers 1 together with their associated spacer sleeves 6 against the shoulder on the hub part 51.

[0032] Several screws 50 are provided in the circumferential direction, so that a stable connection can be made.

[0033] The hub part 51 is secured axially by a locking washer, which at least partially covers a radial area of ​​the hub part 51 and is screwed centrally to the rotor shaft 41.

[0034] Two reaction parts are arranged in parallel in the direction of travel. Each of these reaction parts is designed as a sword-shaped metal part that projects between the two disks 1 of a respective pair of the pole wheel disk arrangement in such a way that the permanent magnets (2, 3) rotating past the metal part and attached to the disks 1 of the respective pair induce eddy currents and thus generate a driving force for the mobile unit in the direction of travel.

[0035] The permanent magnets (2, 3) of each pair are thus positioned on the facing end faces of the disks 1 of the respective pair. The respective reaction element, not shown in the figures, projects into the space between the permanent magnets (2, 3) of the respective pair.

[0036] The electric motor is designed as an asynchronous motor.

[0037] In other embodiments, a synchronous motor or a reluctance motor can also be used.

[0038] In Fig. 6 together with Fig. 7 is a polar disk arrangement according to the Fig. 1, Fig. 2 to Fig. 3 shown, which is fastened to a hub part 70 by means of a screw 71 in a manner corresponding to the one shown in the Fig. 4 to Fig. as described in 5. However, only a single pair of disks 1 is used.

[0039] The hub part 70 is in turn connected to the rotor shaft of an electric motor, the rotor shaft being rotatably mounted in the electric motor housing 60 of the electric motor.

[0040] The electric motor is preferably designed as a synchronous motor.

[0041] In Fig. 8 together with Fig.Figure 9 shows a pole wheel assembly consisting of two pairs of discs 1, which are attached to a hub part 90 by means of screws. The hub part is secured to the rotor shaft of the electric motor by means of several off-center screws, i.e., in a clamping or flange connection type. The rotor shaft is rotatably mounted in the electric motor housing 80.

[0042] The spacer sleeve 6 and / or the washers 1 are preferably made of metal, in particular steel or aluminium.

[0043] In further embodiments according to the invention, instead of the two packages axially stacked on the hub part, comprising a spacer sleeve with two discs, more packages are arranged.

[0044] In further embodiments according to the invention, the hub part is connected to the rotor shaft by means of a force-fit connection, in particular by means of a clamping connection.

[0045] In further embodiments of the invention, the pole wheel assembly is mounted in a stationary position and the mobile unit includes the reaction unit, so that no electrical supply for the drive is necessary on the mobile unit. Thus, electrical cables only need to be run to the electric motor of the stationary pole wheel assembly. Reference symbol list 1 slice 2 permanent magnets 3 permanent magnet 4 Fasteners 5 countersunk screws 6 Spacer sleeve 20 holes, especially axially aligned through holes 50 screws 51 Hub part 40 electric motor housings 41 Rotor shaft 70 Hub part 71 screw 60 Electric motor, especially synchronous motor 80 Electric motor, especially synchronous motor 90 Hub part

Claims

[1] Drive arrangement, wherein a rotor shaft (41) is connected to a hub part (51) in a rotationally fixed manner, wherein the rotor shaft (41) is driven by an asynchronous motor, synchronous motor or reluctance motor, wherein packages are arranged on the hub part (51), wherein each package has two disks (1) which are spaced apart from each other by a spacer sleeve (6), wherein the packages are arranged axially one behind the other and are stacked, wherein the spacer sleeve (6) is arranged between the two respective disks (1) of each package. wherein each disc (1) is screwed together with a corresponding spacer sleeve (6) of a respective package wherein a locking washer is screwed to the rotor shaft (41) for axial securing, the locking washer securing the hub part (51) axially at least on one side, wherein the hub part (51) is axially secured on its other axial side by means of a shaft shoulder of the rotor shaft (41), wherein permanent magnets (2) are arranged on each disk (1). [2] Drive arrangement according to claim 1, characterized by that the permanent magnets (2) are connected and arranged on each disk (1) in a materially bonded and / or form-fit manner. [3] Drive arrangement according to at least one of the preceding claims, characterized by , that the permanent magnets (2) are regularly spaced apart from each other in the circumferential direction and / or are arranged on the opposite end faces of the disks (1) and / or are arranged at the same radial distance. [4] Drive arrangement according to at least one of the preceding claims, characterized by , that the hub part (51) is screwed together with the respective spacer sleeve (6) and / or associated washers (1) belonging to the respective package, [5] Drive arrangement according to claim 4, characterized by , that a screw (50) used is arranged on a non-vanishing radial distance and / or is screwed into a threaded bore of the hub part (51). [6] Drive arrangement according to claim 5, characterized by , that the screw head presses the discs (1) and at least one spacer sleeve (6) onto the hub part (51) in an axial direction. [7] Drive arrangement according to at least one of the preceding claims, characterized by , that in the spacing area between the opposing permanent magnets (2) of the disks (1) a sword-shaped reaction part is arranged, [8] Drive arrangement according to claim 7, characterized by , that the discs (1) are arranged to be movable along the reaction part on a mobile unit which is guided by rails, [9] Drive arrangement according to claim 7, characterized by, that the reaction part is arranged to be movable relative to the disks (1), wherein the reaction part is provided on a rail-guided mobile part.

Images