Attachment

Abstract

The system comprises a first part and a second part arranged to be relatively movable relative to the first. wherein the first part comprises a sword part (2) extending in the direction of movement, in particular of an elongated design, wherein the second part comprises at least one rotatably mounted, driveable disk (1) wherein the axis of rotation is oriented perpendicular to the direction of movement, wherein the disk (1) has permanent magnets (20, 21) on its circumference, the magnetization direction of which is oriented in the radial direction or in a direction opposite to the radial direction, wherein the magnetization direction of each permanent magnet (20, 21) is opposite to the permanent magnet (20, 21) nearest in the circumferential direction, wherein the sword part (2) is made of a stamped sheet steel part and has a pole structure along the direction of movement such that the driving force is generated when the permanent magnets (20, 21) rotate past the pole structure according to the reluctance motor principle, wherein the second part has another disk (1) fitted with permanent magnets (20, 21), wherein the sword part (2) is arranged between the discs (1) wherein the pole structure has teeth that are evenly spaced apart from each other in the direction of movement, wherein the teeth have a tooth head that widens towards the respective disc (1), wherein the permanent magnets (20, 21) have a circumferential distance to their nearest neighboring permanent magnet (20, 21) which is essentially equal to, and in particular exactly equal to, the distance between the poles of the pole structure.

Description

[0001] The invention relates to a plant.

[0002] It is known to equip the rotors of synchronous motors with permanent magnets around their circumference.

[0003] From DE 34 28 684 C1 a magnetic transmission is known, wherein a permanent magnet with circumferentially magnetized magnets is moved linearly along a pole structure.

[0004] A magnetically coupled system is known from WO 96 / 22630 A1.

[0005] A linear drive is known from DE 10 2008 018 884 A1.

[0006] A linear positioning drive is known from DE 10 2006 055 663 A1.

[0007] A conveying system is known from EP 1 232 974 A1.

[0008] The invention is therefore based on the objective of further improving a system with at least one drive system, while keeping losses to a minimum.

[0009] According to the invention, the problem is solved in the system according to the features specified in claim 1.

[0010] Important features of the invention in the system are that it comprises a first part and a second part arranged to be movable relative to the first, comprising a first part and a second part arranged to be movable relative to the first, wherein the first part has a sword part extending in the direction of movement, in particular an elongated form, wherein the second part comprises at least one rotatably mounted, driveable disc, where the axis of rotation is aligned perpendicular to the direction of movement, wherein the disk has permanent magnets on its circumference, the magnetization direction of which is in the opposite axial direction to the nearest neighboring permanent magnet in the circumferential direction, wherein the sword part has a pole structure along the direction of movement such that the driving force can be generated, in particular is generated, according to the reluctance motor principle when the permanent magnets rotate past the pole structure.

[0011] A key advantage is that the propulsive force is generated according to the reluctance principle, whereby the poles of the pole structure are attracted to the nearest permanent magnet as the permanent magnets rotate past the pole structure of the blade section. This allows the disc to be easily driven with an electric motor, and the drive system operates without slippage. Unlike a rolling drive wheel, this allows for contactless operation. This results in a smoother drive compared to a rolling rubber wheel or similar device. Icing of the rail or other changes in the friction coefficient of the rail section's surface do not alter the movement, as the driving force is generated by magnetic fields.As long as the drive system is not overloaded, significant slippage is prevented, whereby significant slippage is present when the slip value of the disk is greater than half the angular distance between the nearest permanent magnets of the disks.

[0012] Even if a case of overload occurred briefly, the disc would indeed experience an angular offset, but only by one or more distances between the permanent magnets, so that after the overload has ended, each permanent magnet is again uniquely assigned to the respective poles of the pole structure when moving along the pole structure.

[0013] In a preferred embodiment, the sword section is arranged between the discs. The advantage here is that two discs can be used, thus generating a greater propulsive force.

[0014] In an advantageous embodiment, the pole structure has teeth that are evenly spaced from one another in the direction of movement. This offers the advantage of simple manufacturing and the generation of a uniform thrust force during movement.

[0015] In a preferred embodiment, the sword section comprises a stamped part, particularly made of sheet steel. The advantage here is that manufacturing is very simple and cost-effective.

[0016] In a preferred design, the teeth have a wider tooth head. This has the advantage of improving field guidance.

[0017] In an advantageous embodiment, the permanent magnets have a circumferential distance to their nearest neighboring permanent magnet that is essentially equal to, and in particular exactly equal to, the distance between the poles of the pole structure. An advantage of this is that drive without slippage is possible.

[0018] In an advantageous embodiment, the sword-shaped section is a component of a rail system or rail, wherein the rail system or rail also includes guide areas for rollers of the second part, which is designed as a vehicle, and in particular wherein the rail system or rail is formed in one piece. It is advantageous that the rail system can be used both to support and guide the vehicle and to drive it, by providing the sword-shaped section as a reactive component on the rail system.

[0019] In an advantageous embodiment, each permanent magnet is made up of two or more individual permanent magnets arranged one above the other perpendicular to the surface of the respective conical section. The advantage here is that a cost-effective and simple amplification of the magnetic field can be achieved. In another advantageous embodiment, each permanent magnet is made up of two or more individual permanent magnets arranged side by side in the circumferential direction. The advantage here, too, is that a cost-effective and simple amplification of the magnetic field can be achieved.

[0020] In a preferred design, the sword section is manufactured as a stamped sheet of steel. The advantage here is that cost-effective production is possible.

[0021] In a preferred embodiment, the disc is driven by an electric motor, in particular a synchronous motor. An advantage of this is that a drive that is easy to control can be used.

[0022] In an advantageous embodiment, the driving force can be generated by means of reluctance force, particularly when the discs rotate past the sword section, especially the discs with their permanent magnets, wherein each permanent magnet attracts the nearest pole or tooth of the pole structure most strongly. The advantage here is that the driving force can be generated in a very cost-effective manner.

[0023] In an advantageous embodiment, a support roller is mounted on a part that is non-rotatably connected to the respective disc, in particular by means of a ball bearing, wherein the support roller can roll and / or be guided on the rail system or on the rail. It is advantageous that support on the rail system is possible and that the support roller can be mounted on the axis of rotation of the disc, thus subjecting the bearing to a smaller difference in rotational speeds between the inner and outer rings of the bearing.

[0024] In an advantageous embodiment, the rolling area or guide area for the support roller on the rail system or the rail itself, and / or the outer surface of the support roller, is concave, particularly on both sides of the rail system facing the respective discs, such that restoring forces are effective in stabilizing the target orientation when the vehicle deviates from its intended orientation. An advantage of this is that self-centering is easily achieved.

[0025] In an advantageous embodiment, means for measuring the motor current of the electric motor are connected to control electronics such that a value for the tractive force can be determined from the measured current values. The advantage here is that the tractive force can be measured similarly to the motor's torque, i.e., with a simple structure.

[0026] In an advantageous embodiment, means for detecting the position in the direction of movement work together with the pole structure, in particular a light barrier interacting with the pole structure for detecting the position. It is advantageous that the pole structure can be used not only for generating propulsive force but also for position determination.

[0027] Further advantages arise from the sub-claims.

[0028] The invention will now be explained in more detail with the help of illustrations: In the Fig. Figure 1 is a drive system of a device according to the invention schematically sketched in side view, wherein a vehicle comprises a rotatably mounted disc 1 and is movable along a sword part 2 of a rail, which also has rail parts (not shown) for guiding support rollers, with which the vehicle can be moved along the rail. In Fig. Figure 2 shows a corresponding oblique view. In Fig. Figure 3 shows a further embodiment comprising a further disk which is arranged parallel to the first disk, wherein the heavy part 2 is provided between the disks.

[0029] In the embodiment according to the invention according to Fig. 1 and Fig. Figure 2 shows that the disc 1 is set into rotation by an electric motor (not shown). The disc consists of a ferromagnetic substrate to which permanent magnets are attached. The axis of rotation is oriented perpendicular to the direction of travel of the vehicle, so that permanent magnets arranged along the circumference of the disc can rotate past the sword-shaped part.

[0030] Permanent magnets 20 with an outwardly facing north pole or permanent magnets 21 with an outwardly facing south pole are provided on the outer circumference of the discs.

[0031] The magnetization direction of directly adjacent permanent magnets is oppositely oriented in the circumferential direction. Therefore, an outward-facing south pole is followed in the circumferential direction by an outward-facing north pole.

[0032] Sword section 2 has a comb-like structure composed of individual teeth. Each tooth has a widened tooth head at its end facing the vehicle.

[0033] The distance between the individual teeth of the comb-like structure of sword part 2 in the direction of movement essentially corresponds to the distance between the permanent magnets in the circumferential direction.

[0034] If the rotational speed of the disc is essentially the same as that of an imaginary, equally sized wheel rolling without slippage along the blade section, the generation of propulsive force in the direction of movement is made possible by the principle of reluctance, as an attractive force is created between the tooth head and the permanent magnet. In this way, the vehicle synchronizes itself with the sequence of teeth arranged along the direction of movement. Thus, essentially slip-free movement of the disc is possible without contact with the rail.

[0035] The drive system is suitable for a rail vehicle that has a linkage which, by means of rollers, in particular support rollers, can be positioned on the rail, comprising the drawbar section and other rail parts not shown, and is movable along this rail. Two drive systems, namely a front and a rear one, can even be attached to the rail vehicle.

[0036] The disc is mounted, in particular as a ball bearing, on the vehicle linkage, which is also not shown in the figure.

[0037] By means of the other rollers mounted on the vehicle linkage, such as support rollers and / or guide wheels, the vehicle is then relatively movable on the other rail sections in the direction of movement, i.e. along the sword part 2.

[0038] The axis of rotation of disc 2 is oriented perpendicular to the direction of movement. The guide rail section is elongated along the direction of movement and is preferably manufactured as a continuous casting. The guide rail section 2 also incorporates the other rail sections, either as single or multiple components, which serve to guide the rollers and together with the guide rail section form the rail or rail system. Preferably, the guide rail section 2 is made of ferromagnetic material, such as steel or sheet steel.

[0039] The rail therefore also includes guide areas for rollers and the rail sections for guiding the support rollers. Each support roller is mounted on the rotor shaft that drives the disc.

[0040] The figures show the permanent magnets 20 with their north poles oriented towards the heaviest part and the permanent magnets 21 with their south poles oriented towards the heaviest part.

[0041] Preferably, the vehicle has a control unit that controls the motor of a front and an analogously designed rear drive system, with each drive system corresponding to the one described in Fig. 1 corresponds to the illustrated embodiment.

[0042] In a further embodiment of the invention, the sword part is designed as a sheet steel stack, with the teeth being punched out. The teeth are thus arranged in a plane whose normal direction is parallel to the axis of rotation.

[0043] In the exemplary embodiment according to Fig. In the diagram, two disks 1 are mounted on the rotating axis and are driven by the motor. Permanent magnets 20 and 21 are mounted on each disk and spaced apart by the comb-like structure of the blade section, i.e., by means of teeth. Each permanent magnet 20 of the first disk 1 is directly opposite a permanent magnet 21 of the second disk 1, and vice versa.

[0044] In an alternative embodiment according to the invention, the motor and the disk 1 are arranged in a stationary position and the movable part of the system then comprises the sword part 2 including rail parts. Reference symbol list 1 ferromagnetic carrier disk 2 Sword part, in particular rail part, with teeth 20 permanent magnets, outward-facing north poles 21 permanent magnets, outward-facing south poles

Claims

[1] A system comprising a first part and a second part arranged to be movable relative to the first, wherein the first part comprises a sword part (2) extending in the direction of movement, in particular of an elongated design, wherein the second part comprises at least one rotatably mounted, driveable disk (1) wherein the axis of rotation is oriented perpendicular to the direction of movement, wherein the disk (1) has permanent magnets (20, 21) on its circumference, the magnetization direction of which is oriented in the radial direction or in a direction opposite to the radial direction, wherein the magnetization direction of each permanent magnet (20, 21) is opposite to the permanent magnet (20, 21) nearest in the circumferential direction, wherein the sword part (2) is made of a stamped sheet steel part and has a pole structure along the direction of movement such that the driving force is generated when the permanent magnets (20, 21) rotate past the pole structure according to the reluctance motor principle, wherein the second part has another disk (1) fitted with permanent magnets (20, 21), wherein the sword part (2) is arranged between the discs (1) wherein the pole structure has teeth that are evenly spaced apart from each other in the direction of movement, wherein the teeth have a tooth head that widens towards the respective disc (1), wherein the permanent magnets (20, 21) have a circumferential distance to their nearest neighboring permanent magnet (20, 21) which is essentially equal to, and in particular exactly equal to, the distance between the poles of the pole structure. [2] Plant according to claim 1, characterized bythat the sword part (2) is a part of a rail system or rail, wherein the rail system or rail also has guide areas for rollers of the second part designed as a vehicle, in particular wherein the rail system or rail is formed in one piece. [3] Plant according to at least one of the preceding claims, characterized by , that Each permanent magnet (20, 21) is made up of two or more individual permanent magnets (20, 21) arranged one above the other perpendicular to the surface of the respective cone-shaped section. and / or that Each permanent magnet (20, 21) is made up of two or more individual permanent magnets (20, 21) arranged next to each other in the circumferential direction in the conical section. [4] Plant according to at least one of the preceding claims, characterized by, that the disks (1) are driven by an electric motor, in particular a synchronous motor. [5] Plant according to at least one of the preceding claims, characterized by , that the driving force can be generated by means of reluctance force, in particular by rotating the discs (1) along the sword part (2), in particular the discs (1) with their permanent magnets (20, 21), wherein each permanent magnet (20, 21) attracts the nearest pole or tooth of the pole structure most strongly. [6] Plant according to at least one of the preceding claims, characterized by , that a support roller is provided on a part which is non-rotatably connected to the respective disc (1), in particular by means of ball bearings, wherein the support roller is able to roll and / or be guided on the rail system or on the rail. [7] Plant according to at least one of the preceding claims, characterized by, that on the rail system or on the rail the rolling area or guide area for the support roller and / or on the support roller the outer surface is concave in such a way, in particular on both sides of the rail system facing the respective discs (1), that when the vehicle is deflected from its intended orientation, restoring forces are effective to stabilize the intended orientation. [8] Plant according to at least one of the preceding claims, characterized by , that means for recording the motor current of the electric motor are connected with such control electronics that a value for propulsive force can be determined from the recorded current values, in particular from the active current determined therefrom. [9] Plant according to at least one of the preceding claims, characterized by, that means for detecting the position in the direction of movement cooperate with the pole structure, in particular wherein a light barrier cooperating with the pole structure is provided for detecting the position.

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