DRIVE ORDER FOR A GATE DEVICE AND GATE DEVICE

Description

[0001] The invention relates to a drive arrangement for a gate device comprising at least one electric motor coupled to a gear arrangement that drives a gate shaft to move a gate element of the gate device from a closed state to an open state and vice versa. The invention further relates to a gate device with such a drive arrangement.

[0002] Drive systems for gate mechanisms are well known in the art. For example, European patent application EP 1965018 A2 discloses such a drive system. The increasingly stringent safety requirements for power-operated gate mechanisms necessitate complex mechanical or electronic systems. The drive system according to EP 1965018 A2 features a self-locking gearbox with tension spring compensation to prevent unintentional opening of the gate mechanism. Additional safety catches and / or brakes may also be provided to prevent unintentional movement of the gate mechanism in the event of gearbox failure. It should be clear that such drive systems are complex and therefore expensive to manufacture and install.

[0003] European patent EP 0551050 B1 discloses an eccentric gear drive that provides unambiguous and highly precise guidance of orbiting parts. Further eccentric gear drives are also disclosed in EP 0 589 760 A1 and WO 2009 / 053996 A1.

[0004] The object of the invention is to provide a drive arrangement or a gate device with a drive arrangement that avoids the aforementioned disadvantages in a simple way.

[0005] This problem is solved by a drive arrangement according to the invention in that the gear arrangement is designed as an eccentric gear drive, wherein at least two orbiting toothed discs, which can be driven by at least one eccentric shaft of the at least one electric motor, engage an output shaft connected to the gate shaft via an internal toothing, wherein the toothed discs have an internal toothing provided on an outside, which is each designed in a partial circular shape.This provides a particularly simple and therefore inexpensive drive arrangement that features a high-precision gear assembly. Due to the high number of meshing teeth, it operates with low wear compared to conventional gear assemblies and remains operational even in the event of wear. Furthermore, the use of at least two orbiting toothed discs ensures compliance with stringent safety requirements in the event of a gear failure, such as a toothed disc breakage. Additionally, it is a self-locking gear assembly, eliminating the need for brakes. To increase torque, it can be advantageous to use multiple electric motors.

[0006] In an advantageous embodiment, the toothed discs are arranged in the same direction or out of phase. In an out-of-phase arrangement, for example offset by an angle of 180°, the toothed discs are each in contact with different areas of the output shaft, thereby distributing the load more evenly across the output shaft.

[0007] According to a particularly advantageous embodiment, such a drive arrangement includes a gate control unit that is connected to the electric motor via control technology. This makes it possible to easily integrate the drive arrangement into a control system for the entire gate device. A particularly advantageous feature is that the gate control unit can be operated and read wirelessly, for example via Wi-Fi or Bluetooth. This allows not only conventional control functions but also remote control and maintenance using data from the drive arrangement. The maintenance device could, for example,communicate with the gate control via a data bus and trigger test movements, as well as transmit the maintenance information obtained to the gate control, which in turn stores this data for keeping an electronic test log and / or forwards it to an external storage device using wired or wireless data transmission means.

[0008] Advantageously, at least one rotary encoder is provided on the eccentric shaft and / or at least one rotary encoder on the output shaft, which are connected to the gate control unit. By comparing the measured values ​​with those stored in the gate control unit, the end positions of the gate can be easily determined. This also allows for the detection of wear on the drive assembly and / or the gearbox assembly. Furthermore, with sufficient clearance, continuous comparison of the angular position could also detect if the gate leaf encounters an obstacle.

[0009] It can also be advantageous to provide at least one speed sensor on the output shaft. This allows for the simple detection of an abrupt stop of the gate mechanism, for example in the event of an obstacle collision, and thus replaces a tactile safety device.

[0010] To facilitate monitoring and maintenance of the drive system, additional sensors, such as a temperature sensor, vibration sensor, torque sensor, current meter, etc., can be installed near the electric motor. For example, a torque sensor can be mounted on a torque support and a spring monitor can be used to balance the gate in a known manner.

[0011] The electric motor is advantageously a DC motor. This makes it possible to connect the drive system to an existing household electrical grid.

[0012] Because the at least two orbiting toothed discs are flexibly or rigidly coupled to each other via connecting means, a particularly high degree of redundancy of the drive arrangement is ensured, even in the event of a toothed disc breaking.

[0013] Furthermore, it is also conceivable that the electric motor is operatively connected to the eccentric gear drive via a traction gear, which allows the electric motor to be designed more simply and, if necessary, an additional gear ratio to be implemented.

[0014] In a further advantageous embodiment, three toothed discs can be provided which orbit in a phase-shifted manner relative to each other and can be driven by three eccentric shafts.

[0015] The problem is also solved by a gate device with such a drive arrangement, in which a frame arrangement is provided for the gate element on which the drive arrangement is arranged.

[0016] Advantageously, additional sensor arrangements, such as a switching strip arrangement, a light curtain, or a 3D sensor, are provided, which are wirelessly connected to a gate control unit. Depending on the application, wired arrangements may also be included.

[0017] The invention is illustrated with reference to a new drawing. This drawing shows: Figure 1 a schematic view of a gate device with a drive arrangement, Figure 2 a side view of a drive arrangement not according to the invention, Figure 3 a sectional view through a gear arrangement of the drive arrangement Figure 2 , and Figure 4 a schematic view of an embodiment of a gear arrangement according to the invention.

[0018] Figure 1Figure 1 shows a schematic view of a gate device 2. It should be noted that the term "gate device" refers to any type of closing mechanism for an opening. This gate device 2 has a frame assembly 4 in which a gate element 6 is slidably guided. A drive assembly 8 is provided on the frame assembly 4, comprising an electric motor 10 and a gearbox assembly 12, which drives a gate shaft 14, allowing the gate element 6 to be moved from a closed state to an open state and vice versa. In this embodiment, the electric motor 10 is a commercially available DC motor. A gearbox 16 is connected to the electric motor 10 in a known manner. This gearbox 16 can be designed as a worm gear with deflection or as a traction drive without deflection.In this case, the gearbox 16 and an eccentric gear unit 17 form the gearbox assembly 12. The drive assembly 8 and the gearbox assembly 12 are mounted on a torque support 18, which is rigidly connected to the frame assembly 4 in a known manner. If the gearbox 16 is designed as a traction drive, the drive assembly 8 can be positioned at a distance from the gate shaft 14. It is also conceivable that a motor drive shaft (not shown here) of the drive assembly 8 is directly connected to the eccentric gear unit 17.

[0019] In the present view, the gate mechanism 6 is shown in an intermediate position. Also shown is a gate control unit 19, which is wirelessly connected via Bluetooth and / or Wi-Fi to the electric motor 10, a 3D sensor 20, and a safety edge 22. The 3D sensor 20 serves for non-contact monitoring of the area surrounding the gate mechanism 6. The safety edge 22 is a tactile safety element and, in a known manner, serves for obstacle detection and stops the movement of the gate mechanism 6 upon encountering an obstacle.

[0020] Figure 2 shows a first non-inventive embodiment of the drive arrangement 8 made of Figure 1in a sectional partial view. The electric motor 10, not shown here, is operatively connected via the gearbox 16 to a drive shaft 24 in a known manner. The drive shaft 24 is designed as an eccentric shaft 24 with two eccentrics 26, 27. These eccentrics 26, 27 are movably mounted in two phase-shifted orbiting toothed disks 28, 30, which are arranged at an angle of 180° to each other. These toothed disks 28, 30 each have internal teeth 32, 34, which are Figure 3 The gears are shown in more detail below and engage with an external toothing 36 of a third toothed disc 40, which is non-rotatably connected to an output shaft 38. The output shaft 38 can be designed as a hollow through shaft and is shown here only schematically. The gear assembly 16 is completed by a cover part 42, which overlaps the toothed discs 28 and 30 with a wall part 44 and is part of a housing assembly of the drive assembly 8.

[0021] Figure 3Figure 2 now shows a cross-sectional view through the toothed disc 28. The engagement of the toothed disc 28 with the toothed disc 40 is clearly visible, with a large number of teeth in mesh, thus ensuring reliable torque transmission. The gear ratio between the drive shaft 24 and the output shaft 38 can be adjusted depending on the difference in the number of teeth between the toothed discs 28, 30, and 40. To increase the transmitted torque, multiple electric motors with multiple eccentric shafts can also be used.

[0022] To further enhance the functionality and safety of the drive assembly 8 and the gate device 2, rotary encoders 46 and 48 can be provided on the eccentric shaft 24 and the output shaft 38, respectively. These rotary encoders 46 and 48 are connected to the gate control unit 18, allowing, for example, the detection of wear on the drive assembly 8 by monitoring changes in their rotational ratio. A speed sensor 50 can also be provided on the output shaft 38 (see [reference]). Figure 2 ), which, for example, can detect an impact with an obstacle. The in Figure 1The illustrated switching strip 22 could then also be omitted. Additionally, further sensors, such as a temperature sensor, a vibration sensor, etc., can be provided on the drive assembly 8, and in particular in the area of ​​the electric motor 10, in order to detect abnormalities of the electric motor 10 and the drive assembly 8.

[0023] A schematic view of an embodiment of a gear arrangement 12' according to the invention is shown in Figure 4 This gear arrangement 12' has three toothed discs 52, 54, 56, each of which has a partially annular internal toothing 64, 66, 68 on one outer side 58, 60, 62. In the view shown, the gear 54 is engaged with the output shaft 70 via its internal toothing 66. The toothed discs 52, 54, 56 are driven by three eccentric shafts 72, 74, 76.

Claims

1. Drive arrangement for a gate device (2) with at least one electric motor (10) which is coupled to a gear arrangement (12') that drives a gate shaft (14) in order to move a gate member (6) of the gate device (2) from a closed state to an open state and vice versa, characterized in that the gear arrangement (12') comprises an eccentric cogwheel gear (17), wherein at least two orbiting toothed discs (52, 54, 56), which can be driven by at least one eccentric shaft (72, 74, 76) of the at least one electric motor (10), engage via internal teeth (64, 66, 68) on an output shaft (70) which is operatively connected to the gate shaft (2), wherein the toothed discs (52, 54, 56) have internal teeth (64, 66, 68) provided on an outer side (58, 60, 62), which are each designed to be partial circles.

2. Drive arrangement according to claim 1, characterized in that the toothed discs (52, 54, 56) are arranged to rotate in phase or phase-shifted.

3. Drive arrangement according to claim 1 or 2, characterized in that a gate control device (19) is provided, which is connected at least to the electric motor (10) for control purposes.

4. Drive arrangement according to claim 3, characterized in that the gate control device (19) can be operated or read wirelessly, for example via Wi-Fi or Bluetooth.

5. Drive arrangement according to claim 3 or 4, characterized in that at least one rotary encoder (46) is provided on the eccentric shaft (24) and / or at least one rotary encoder (48) is provided on the output shaft (70), which are connected to the gate control device (19) for control purposes.

6. Drive arrangement according to one of claims 3-5, characterized in that at least one speed sensor (50) is provided on the output shaft (70).

7. Drive arrangement according to claim 5 or 6, characterized in that further sensors, such as a temperature sensor, a vibration sensor, a torque sensor, a current measuring device, etc., are provided in the area of the drive arrangement (8).

8. Drive arrangement according to one of the preceding claims, characterized in that the electric motor (10) is a DC motor.

9. Drive arrangement according to one of the preceding claims, characterized in that the at least two orbiting toothed discs (52, 54, 56) are flexibly or rigidly coupled to each other via connecting means.

10. Drive arrangement according to one of the preceding claims, characterized in that the electric motor (10) is operatively connected to the eccentric cogwheel gear (17) via a traction drive gear.

11. Drive arrangement according to one of the preceding claims, characterized in that three toothed discs (52, 54, 56) are provided, which orbit phase-shifted relative to each other and can be driven by three eccentric shafts (72, 74, 76).

12. Gate device with a drive arrangement (8) according to one of the preceding claims, characterized in that a frame arrangement (4) is provided for the gate member (6), on which the drive arrangement (8) is arranged.

13. Gate device according to claim 12, characterized in that further sensor arrangements, such as a switch strip arrangement, a light grid, or a 3D sensor, are provided, which are connected wirelessly to a gate control device (19) for control purposes.