Long-stator linear motor

Patent metadata

Field	Value
Publication number	US-10923997-B2
Application number	US-201916514189-A
Country	US
Kind code	B2
Filing date	Jul 17, 2019
Priority date	Jul 18, 2018
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

Long-stator linear motor with vehicle arranged for movement along transport path. Motor includes holding structure(s) having drive coils, on which passive part of vehicle is arranged; and guide surface and guide track running along path. Passive part has first drive magnet(s) arranged parallel to guide surface with air gap. Vehicle has first profile member(s) arranged on guide track and positioned by pressing force acting in transverse direction onto guide track with respect to an ascending direction running normally to movement direction and transverse direction. First running member(s) support passive part on holding structure against attractive force acting between drive magnets and drive coils to ensure the air gap. Vehicle has first auxiliary guide member(s) which, interacting with an auxiliary guide on holding structure at least in divergence and/or convergence areas of path, delimits movement of vehicle in a positive and/or negative ascending direction at least on one side.

First claim

What is claimed:

1. A long-stator linear motor having at least one transport vehicle and a transport path, along which the at least one transport vehicle is movably arranged in a movement direction, the long-stator linear motor comprising:
the at least one transport vehicle comprising a passive part;
at least one holding structure having drive coils, on which the passive part of the at least one transport vehicle is arranged,
a guide surface running along the transport path;
a guide track running along the transport path;
the passive part having at least one first drive magnet which is arranged parallel to the guide surface, and an air gap is formed between the guide surface and the at least one drive magnet;
the at least one transport vehicle having at least one first profile member, which is arranged on the guide track and is positioned onto the guide track by a pressing force acting in a transverse direction that is normal to the movement direction and that is normal to an ascending direction also normal to the movement direction;
at least one first running member is arranged to support the passive part on the at least one holding structure against an attractive force acting between the drive magnets and the drive coils, which ensures the air gap;
the guide track being configured so that the pressing force produces a positional adjustment of the at least one transport vehicle in at least one of a positive or a negative ascending direction;
the holding structure having an auxiliary guide in at least one of divergence or convergence areas of the transport path; and
the at least one transport vehicle having at least one first auxiliary guide member which, by interacting with the auxiliary guide, delimits movement of at least on one side of the at least one transport vehicle in at least one of the positive or negative ascending direction.

2. The long-stator linear motor according to claim 1 , wherein the auxiliary guide member is spaced apart from the auxiliary guide, when the profile member is centered in the guide track.

3. The long-stator linear motor according to claim 1 , wherein the first running member is attached to the guide surface.

4. The long-stator linear motor according to claim 3 , wherein a second running member is arranged on the at least one transport vehicle, which is arranged opposite the first running member in the transverse direction.

5. The long-stator linear motor according to claim 1 , wherein a second auxiliary guide member is arranged on the at least one transport vehicle, which is arranged opposite of the first auxiliary guide member in the transverse direction.

6. The long-stator linear motor according to claim 1 , wherein a second profile member is arranged on the at least one transport vehicle, which is arranged opposite of the first profile member in the transverse direction.

7. The long-stator linear motor according to claim 1 , wherein a second drive magnet is arranged on the at least one transport vehicle, which is arranged opposite of the first drive magnet in the transverse direction.

8. The long-stator linear motor according to claim 1 , wherein a second running member is arranged on the at least one transport vehicle, which is arranged opposite the first running member in the transverse direction, a second auxiliary guide member is arranged on the at least one transport vehicle, which is arranged opposite of the first auxiliary guide member in the transverse direction, and a second profile member is arranged on the at least one transport vehicle, which is arranged opposite of the first profile member in the transverse direction, and
wherein at least one of:
at least one of the first or second profile member,
at least one of the first or second running member, or
at least one of the first or second auxiliary guide member

are designed as a roller, as a sliding element, or as a combination of roller and sliding element.

9. The long-stator linear motor according to claim 1 , wherein the at least one profile member is designed as a combined sliding/rolling member, the rotational axis of which is arranged centrally in the passive part, wherein the profile member protrudes on both sides from the passive part in the transverse direction.

10. The long-stator linear motor according to claim 1 , wherein the at least one running member is designed as a combined sliding/rolling member, the rotational axis of which is arranged centrally in the passive part, wherein the running member protrudes on both sides from the passive part in the transverse direction.

11. The long-stator linear motor according to claim 1 , wherein the auxiliary guide is provided only in the at least one of divergence or convergence areas of the transport path.

12. A long-stator linear motor having at least one transport vehicle and a transport path, along which the at least one transport vehicle is movably arranged in a movement direction, the long-stator linear motor comprising:
the at least one transport vehicle comprising a passive part;
at least one holding structure having drive coils, on which the passive part of the transport vehicle is arranged,
a guide surface running along the transport path;
a guide track running along the transport path;
the passive part having at least one first drive magnet which is arranged parallel to the guide surface, and an air gap is formed between the guide surface and the at least one drive magnet;
the at least one transport vehicle having at least one first profile member, which is arranged on the guide track and is positioned onto the guide track by a pressing force acting in a transverse direction that is normal to the movement direction and that is normal to an ascending direction also normal to the movement direction;
at least one first running member is arranged to support the passive part on the at least one holding structure against an attractive force acting between the drive magnets and the drive coils, which ensures the air gap;
the holding structure having an auxiliary guide in at least one of divergence or convergence areas of the transport path; and
the at least one transport vehicle having at least one first auxiliary guide member which, by interacting with the auxiliary guide, delimits movement of at least on one side of the at least one transport vehicle in at least one of a positive or negative ascending direction,
wherein the auxiliary guide is provided only in the at least one of divergence or convergence areas of the transport path.

Assignees

• B & R Ind Automation Gmbh

Inventors

• HOECK Martin
• Dicker Alexander

Classifications

• B65G54/02 Primary

  electrostatic, electric, or magnetic · CPC title

• H02K41/031 Primary

  of the permanent magnet type · CPC title

• B65G35/08

  comprising trains of unconnected load-carriers, e.g. belt sections, movable in a path, e.g. a closed path, adapted to contact each other and to be propelled by means arranged to engage each load-carrier in turn · CPC title

• B60L13/06 Primary

  Means to sense or control vehicle position or attitude with respect to railway · CPC title

• H02K41/02

  Linear motors; Sectional motors · CPC title