DE202011051474U1 - Drive system for a gate - Google Patents

Abstract

Drive system for a gate (1), with a drive (3) controlled by a control unit (4) for moving the gate (1), with an absolute encoder for determining the absolute position of the drive (3) and with an operating unit (5) whose actuation the gate (1) is closed or opened, characterized in that the control unit alone forms a means for teaching in an end position of the gate (1), a teach-in process being triggered by a specific actuation of the control unit (5) during which the Gate (1) can be moved up to a freely selectable end position, the end position being stored in the control unit (4) by a further specific actuation of the operating unit (5) after the end position has been reached.

Description

The invention relates to a drive system for a gate.

Such gates can be designed in particular as industrial doors. The drive system for controlling the door has a drive and a control unit associated therewith, which is typically arranged directly on the drive. An operating unit is connected to the control unit via a cable. The drive with the control unit is usually located in the upper region of the door, while the operating unit is arranged below the control unit.

The operating unit has a number of keys in a known manner, in particular an up key, a down key and a stop key. Pressing the up key opens the door. Pressing the down key closes the door. Doors designed as industrial doors are typically operated in a dead man's circuit, that is, the door is moved only when one of the aforementioned buttons is pressed. However, if this key is released, the gate stops immediately.

The opening movement of the door takes place up to an upper end position. Accordingly, the closing movement of the door takes place up to a lower end position.

It is known to specify such end positions by mechanical limit switches. The disadvantage here is that they must be manually adjusted at the gate, which is cumbersome and time consuming.

The invention has for its object to provide a drive system for a goal, in which a simple and quick adjustment of end positions is possible.

To solve this problem, the features of claim 1 are provided. Advantageous embodiments and expedient developments of the invention are described in the subclaims.

The drive system for a gate according to the invention is used with a controlled by a control unit drive for moving the gate and includes an absolute encoder for determining the absolute position of the drive and an operating unit by the operation of the gate can be opened or closed. This operating unit continues to form the sole means for teaching end positions for the gate. A specific operation triggers a teach-in process in the operating unit. During the learning process, the gate is moved to a freely selectable end position, wherein after reaching the end position by a further specific actuation of the operating unit, the end position is stored in the control unit.

An essential advantage of the invention is that the end positions of the door can be specified without mechanical adjustment operations of limit switches and the like solely by means of the operating unit.

An essential prerequisite for this is the drive assigned absolute encoder with which the absolute position of the drive and thus the door can be measured. Since the current absolute positions of the goal are thus known in the control unit, this also applies to the end positions of the goal.

Another significant advantage is that the operating unit for opening and closing the door at the same time forms the only means for carrying out a learning process for teaching end positions of the gate. Thus, no separate controls, display elements or the like need to be provided for carrying out a teach-in, that is, for the implementation of teach-in operations no additional design effort is required.

According to the invention, an end position is predetermined in a teach-in process, which is triggered and carried out by a specific actuation of the operating unit. The end position to be set during the teaching process can be visually checked by the operator operating the operating unit. The learning process can thus be easily specified, with the respective operator can specify the end positions exactly by the visual control.

Particularly advantageous during a learning process, the specific operation of the operating unit is maintained until the end position is reached.

This can be initiated by the same operation of the control unit of the teach-in and the desired end position can be approached with the gate, whereby a particularly simple, user-friendly setting of the end positions is possible.

Appropriately, a learning operation for learning an upper and lower end position can be triggered by a specific operation of the operating unit.

This means that all end positions can be set in a user-friendly manner in an analogous way.

Opening and closing of the door is particularly advantageous by specific operations of the control unit only after learning all end positions enabled.

This represents a safety function such that an operation of the gate, that is, its closing and opening, is released only when the end positions that limit the closing and opening movements of the gate, are given. Damage to the door or the drive system, which could otherwise occur if it moves out beyond the end positions in an uncontrolled manner, is excluded.

A particularly advantageous embodiment of the invention provides that the operating unit has a plurality of keys, wherein a specific actuation of the operating unit in the form of pressing one or more keys is formed.

In this case, the operating unit has an up key, a down key and a stop key.

In this case, the teach-in process for teaching the upper end position is triggered by simultaneously pressing the Up button and the Stop button, and these buttons remain pressed until the upper end position is reached. The teach-in process is initiated to teach the lower limit position by simultaneously pressing the down key and the stop key, and these keys remain depressed until the lower limit is reached. To save an end position, the stop key is pressed for a preset time. After learning the end position, the door is opened by pressing the up key and closed by pressing the down key.

The keys of the operating unit are thus used several times in multiple, simple and instructive combinations. The operating unit formed in this way can thus also be used by inexperienced persons.

The invention will be explained in the following with reference to the drawings. Show it:

1 : Schematic representation of a controlled by a drive system door in a first end position.

2 : Schematic representation of the arrangement according to 1 with the gate in a second end position.

3 : Schematic representation of a control unit for the drive system according to 1 ,

The 1 and 2 show schematically a gate 1 with an associated drive system. The gate 1 is formed in the present case of an industrial door, by means of which a door opening 2 can be locked in a building or the like.

The drive system is used for actuation, that is to open and close the door 1 and includes a drive 3 with an electric motor and a control unit 4 for controlling the drive 3 , The drive 3 is associated with an unillustrated absolute encoder, the absolute position of the drive 3 and the gate 1 certainly. The absolute positions are in the control unit 4 read. To the control unit 4 is a control unit 5 connected, in the present case, the connection by means of a cable 6 he follows. Alternatively, a wireless connection can also be provided. Like from the 1 and 2 can be seen, are the drive 3 and the control unit 4 in the upper region of the peat opening 2 , for example, at one the door opening 2 limiting wall installed while the control unit 5 in this case offset downwards.

How out 3 can be seen, the control unit 5 three keys, namely an up key 7 , a down button 8th and a stop button 9 on, by their operation input commands for the control unit 4 to operate the gate 1 to be generated.

During the operation of the gate 1 this can be opened and closed by means of the drive system. To open the gate 1 an operator presses the up key 7 and keep it pressed until the gate 1 in the in 1 shown upper end position is retracted, where the drive 3 automatically stops. In the upper end position is the gate 1 proceed as far as the door opening 2 completely exposed. Accordingly, an operator presses to close the gate 1 the down button and keep it pressed until the gate 1 in the in 2 shown lower end position is retracted, where the drive 3 automatically stops. In the lower end position the gate closes 1 the gate opening 2 completely off.

The drive system is operated in a deadman circuit, that is the gate 1 stops immediately when the operator presses the up key during the opening or closing movement 7 or down button 8th lets go.

According to the invention, the end positions are each learned during a teaching process and in a purely electronic way via the control unit 4 and the control unit 5 set and saved.

As long as the two end positions are not yet learned, the operation of the gate 1 not yet released, that is, the operator can by pressing the UP key 7 or down button 8th the gate 1 do not proceed.

Each teach-in process is triggered by a specific actuation, that is, by pressing a unique combination different from all other key combinations.

The teach-in process for learning the upper limit position is triggered by an operator simultaneously pressing the up key 7 and the stop button 9 suppressed. The operator holds down this key combination, which causes the gate 1 is moved upwards. The operator visually monitors the current position of the door 1 , As soon as this has reached the desired upper end position, the operator releases the keys and the drive 3 stops, leaving the gate 1 stops in the desired end position. Then the operator acknowledges the desired upper end position by pressing the stop button for a predetermined time, for example at least 10 seconds. The control unit 4 then adopts the current absolute position of the drive 3 as the upper end position and stores these, preferably non-volatile, from. This completes the teaching process.

Accordingly, the learning process for teaching the lower limit position is triggered by the fact that the operator simultaneously the down key 8th and the stop button 9 suppressed. The operator holds down this key combination, which causes the gate 1 is moved down. The operator again visually monitors the current position of the door 1 , As soon as the gate 1 has reached the desired lower end position, the operator lets go of the keys and the drive 3 stops, leaving the gate 1 stops in the desired end position. Then the operator acknowledges the desired lower end position by pressing the stop button 9 press again for the given time. This gives us the lower end position in the control unit 4 stored.

In general, it may happen that when setting an end position, the operator, the keys of the control unit 5 lets go too late, leaving the gate 1 beyond the desired end position.

Advantageously, said training operations can then be extended in such a way that an incorrectly set end position can still be corrected during the teaching process.

This is explained below for the teach-in process for learning the upper limit position.

The teach-in process is performed by pressing the up key 7 and the stop button 9 initiated. By holding the up key 7 and the stop button 9 will be the gate 1 move up during the teach-in process. If the operator releases these keys a little too late, the door will move 1 beyond the desired end position. Since the operator has not yet reached the wrong end position with the stop button 9 She can correct the end position by simultaneously pressing the down key 8th and the stop button 9 suppressed. Since a teach-in process is already activated, this key combination is not interpreted as the initiation of a new teach-in process. Holding this key combination now drives the drive 3 the gate 1 downwards, ie in the opposite direction as before when pressing the up key 7 and the stop button 9 , In principle, the countermovement can also be triggered by pressing another key combination. The operator can now correct the end positions by releasing the keys as soon as the desired end position has been reached. The above process can also be repeated one or more times until the desired end position is approached. As soon as the desired end position is reached, the operator presses the stop button 9 for the given time, whereby the final position in the control unit 4 is stored and the teach-in process is terminated.

The correction in the setting of the lower end positions takes place in an analogous manner.

LIST OF REFERENCE NUMBERS

1

gate

2

door opening

3

drive

4

control unit

5

operating unit

6

electric wire

7

Up button

8th

Down button

9

Stop button

Claims (14)

Drive system for a gate ( 1 ), with one of a control unit ( 4 ) controlled drive ( 3 ) for moving the gate ( 1 ), with an absolute encoder for determining the absolute position of the drive ( 3 ) and with a control unit ( 5 ), by the operation of which the gate ( 1 ) is closed or opened, characterized in that the operating unit alone a means for teaching an end position of the gate ( 1 ), wherein by a specific operation of the operating unit ( 5 ) a teach-in process is triggered during which the gate ( 1 ) can be moved to a freely selectable end position, wherein after reaching the end position by a further specific actuation of the operating unit ( 5 ) the final position in the control unit ( 4 ) is stored. Drive system according to claim 1, characterized in that by a respective specific operation of the operating unit ( 5 ) A learning process for teaching an upper and lower end position is triggered. Drive system according to one of claims 1 or 2, characterized in that during a learning process, the specific operation of the operating unit ( 5 ) is maintained until the end position is reached. Drive system according to one of claims 1 to 3, characterized in that an opening and closing of the gate ( 1 ) by specific operations of the control unit ( 5 ) is only released after teaching in all end positions. Drive system according to one of claims 1 to 4, characterized in that the operating unit ( 5 ) has a plurality of keys, wherein a specific operation of the operating unit ( 5 ) is formed in the form of pressing one or more keys. Drive system according to claim 5, characterized in that the operating unit ( 5 ) an up key ( 7 ), a down button ( 8th ) and a stop button ( 9 ) having. Drive system according to claim 6, characterized in that the learning process for teaching the upper limit position by simultaneously pressing the up key ( 7 ) and the stop button ( 9 ) and these buttons remain depressed until the upper limit position is reached. Drive system according to one of claims 6 or 7, characterized in that the learning process for teaching the lower limit position by simultaneously pressing the down key ( 8th ) and the stop button ( 9 ) and these buttons remain depressed until the lower limit is reached. Drive system according to one of claims 6 to 8, characterized in that for storing an end position, the stop button ( 9 ) is pressed for a predetermined time. Drive system according to one of Claims 1 to 9, characterized in that, after the end positions have been taught in, the gate ( 1 ) by pressing the Up key ( 7 ) and by pressing the down key ( 8th ) is closed. Drive system according to claim 10, characterized in that the opening and closing movements are limited by the end positions. Drive system according to one of claims 1 to 11, characterized in that the gate ( 1 ) Is designed as an industrial door. Drive system according to one of claims 1 to 12, characterized in that the gate ( 1 ) is operated in a deadman circuit. Drive system according to one of claims 1 to 13, characterized in that the operating unit ( 5 ) by wireless or wired transmission means to the control unit ( 4 ) connected.

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