DE102007004445A1 - driving device - Google Patents

Abstract

The invention relates to a drive device (1) for a swing gate or swing gate, with a drive (4) and an actuating element adjustable by means of the drive (4) for closing and opening a gate leaf (2) of the swing gate or wing gate and with a control unit (5). for controlling the drive (4). The control unit (5) is associated with an input unit, via which the length of the door leaf (2) can be entered as an input parameter. The other parameters relevant for the actuation of the swing gate or swing gate are derived automatically in the control unit (5) from the input parameter.

Description

The The invention relates to a drive device for a swing gate, a swing gate or a door.

such Drive devices generally include a drive that is of a Electric motor is formed, and an actuator for opening and Shut down of the gate a swing gate drives. The actuator is typically formed by a spindle, which controls the rotational movement of the electric motor in a linear movement of a torque tube or the like which is coupled to the gate. Corresponding arrangements are for wing gates and doors known.

To the Operation of the swing gate, the drive is controlled by a control unit. Typically, over the control unit for the opening and closing the Drehtors each specified a certain speed profile. The velocity profile consists of an acceleration phase, in which the speed of the door leaf to a maximum speed is accelerated, a middle phase in which the gate with the maximum speed is moved, and a braking phase, in which of the gate wings decelerated from maximum speed to standstill becomes.

When safety measure in known drive devices for swing gates is a so-called Power shutdown provided. This power shutdown sees a reversing of the swing gate, when the force acting on the gate wing a certain Threshold exceeds.

in this connection the motor current of the electric motor is evaluated, which is a measure of the load torque and for that the acting force is.

By This measure it is ensured that when the door leaf comes to rest against an obstacle to the gate not running, but stopped and then runs in the opposite direction.

These Force shutdown is not only intended to protect the hinged door against damage but also serve for purposes of personal protection.

at known drive devices of this type is the threshold, which defines the initiation of the force shutdown, via Potentiometer set on the control unit. Disadvantage here is that the respective operator set the threshold itself got to. To make this setting so that no hazards arise, the operator must the respective boundary conditions and parameters of the swing door exactly know, d. H. the adjustment process is extremely complex. A particular disadvantage here is that the setting of the power shutdown The operating personnel are often deliberately manipulated. The threshold is then set so high that the power shutdown does not respond. This while ensuring an uninterrupted operation of the swing gate. The desired security function is however out of the question Power set.

A Another difficulty is that with the known power shutdown the normative safety requirements for the operation of swing gates generally insufficiently met can be.

The applicable safety standards for Swing gates dictate that upon impact of the gate an obstacle from the moment of impact to a point in time after the impact, the force acting on the obstacle do not exceed the first limit and within a subsequent time interval the force do not exceed a second limit below the first limit may.

The Compliance with these normative limits is then relatively unproblematic, as long as the gate the swing gate has a relatively small length. For long gates is in the outer area of the gate leaf through the length the lever of the gate leaf and due to the high mass of the gate, the force on an obstacle at emergence of the gate Immediately after the impact, it is so large that the permissible limits are exceeded become.

Of the Invention is the object of the least possible constructive Expense a fault- and tamper-proof operation of a drive device for a To provide hinged gate.

to solution This object, the features of claim 1 are provided. advantageous embodiments are appropriate training The invention are described in the subclaims.

The Drive device according to the invention comprises a drive and an adjustable by means of the drive actuator to close and open a gate leaf a gate like a revolving gate or a wing gate. The drive device also has a control unit for controlling the drive. The control unit is associated with an input unit via which as input parameter the length of the gate leaf is entered. The others for the operation the gate relevant parameters in the control unit are automatically off derived from the input parameter. In general, the drive device according to the invention also for Doors usable. Without restriction In the following, the invention will be understood by the general public as one Revolving door controlling drive device explained.

One An essential advantage of the invention is that by entering a single input parameter, a mode setting of the Drive device possible which will ensure safe operation for different door configurations allows. The invention is based on the finding that from the Length of the gate leaf as input parameters all more for derived safe operation of the swing gate relevant parameters can be.

The Length of the gate leaf The swing gate is an extremely simple one determinable parameters of the swing gate, whose specification also by untrained personnel easy to carry out is. The parameterization of the drive device to different Gate configurations are therefore easy and quick to carry out.

Especially It is advantageous that by specifying the length of the door leaf as The only input parameter is the normative safety regulations for the Operation of the swing gate fulfilled can be.

In a particularly advantageous embodiment of the invention for this, derived from the input parameter speed parameter, which the speed profiles when opening and closing the Defining swing gates. These speed parameters are advantageous from the maximum speed at which the door leaf moves is, and from the time of initiating the braking phase, at which the gate wing decelerated from maximum speed to standstill gets formed.

there the specification of the speed parameters takes place in such a way that the Maximum speed inversely proportional to the selected length of the gate leaf is. Furthermore, the time of the braking phase is chosen the earlier, the more greater the length of the gate leaf is.

By this choice of speed parameter becomes the speed the gate is not only during the phase in which the gate wing with constant maximum speed is moved, but also in the temporally upstream acceleration phase and in time downstream braking phase adapted to the length of the door leaf, that upon impact of the gate on an obstacle the permissible normative limits for the forces occurring not exceeded become.

This based on the fact that the forces occurring proportional to the kinetic Energy of the gate are, which increases quadratically with the speed. By the reduction according to the invention the maximum speed inversely proportional to the gate length and achieved the corresponding variation of the beginning of the braking phase, that is essentially independent of differences in the mass of the gate during an impact of the gate forces occurring on an obstacle do not exceed the permissible limits.

With The term maximum speed is one of the speed meant proportional size of the drive. Since this is varied inversely proportional to the gate length, a for different Torlängen obtained substantially constant peripheral speed of the rotary door.

In a particularly advantageous embodiment of the invention from the input parameter of the length of the gate and also the threshold for the power shutdown derived. The height of the threshold is thereby proportional to the length of the gate selected. This means that the power shutdown with increasing gate length also for larger force values starts.

This is based on the fact that the gate length-dependent choice of the speed parameters already guaranteed is that the forces that occur in the event of an impact on the goal do not exceed normative limits, so that in particular for persons no hazards may occur. The threshold value of the power cutoff can thus be adapted to the dimensioning of the gate, especially its length be adjusted. The adaptation takes place in such a way that independent of the gate length the sensitivity of the power switch remains constant. A measure of sensitivity is the torque acting on the drive.

By the opposing ones dependencies the maximum speed on the one hand and the threshold value of the force shutdown on the other hand, on the length of the gate leaf also becomes a tamper-proof parameterization in a simple way ensures the drive device.

Tries namely an operator manipulation such that they too low Value for the length enters the door to faster opening and closing the To reach the gate, because thereby the respective maximum speed is increased, this will result in a correspondingly lower value for the threshold value the power shutdown in the control unit specified. This leads to to a considerably reduced availability of the drive device, because the power shutdown already responds to small disturbances such as gusts of wind and then the gate movement stops and reverses.

The The invention will be explained below with reference to the drawings. It demonstrate:

1 : Schematic representation of a drive device for a swing gate.

2 : Time diagram of the pulse width modulation of the voltage of the drive of the drive device according to 1 ,

3 : Speed profile for opening the swing gate according to 1 ,

4 : Gate length dependent variation of the velocity profile according to 1 ,

5 : Temporal force curve at impact of the swing gate according to 1 on an obstacle.

1 schematically shows a drive device 1 for a swing gate. The swing gate has a gate 2 with respect to a vertical direction (perpendicular to the plane of the drawing in FIG 1 ) extending axis 3 is rotatably mounted.

The drive device 1 comprises a designed as an electric motor drive 4 from a control unit 5 is controlled. The electric motor is designed as a DC motor. The control unit 5 may be formed by a microprocessor or the like. The control unit 5 can be as shown in the drive 4 be integrated or designed as a separate unit.

The drive device 1 is used in the present case as a spindle drive, the spindle as an actuator 6 having. This is the rotational movement of the drive 4 in a linear movement of a push tube 7 implemented. The torque tube 7 is at the gate 2 coupled. By the linear movement of the push tube 7 becomes the gate 2 To open and close the swing gate rotated around the axis. The directions of rotation for closing and opening the gate are in 1 labeled "to" and "to". Other input units in the form of various user interfaces are possible. Furthermore, a display element for visualizing the set value of the door length is advantageously provided.

At the control unit 5 is an input unit for parameterizing the drive device 1 intended. The input unit may be formed by a potentiometer or one or more keys.

When opening and closing the swing gate is the gate 2 each moved according to a predetermined velocity profile. 3 shows an example of a typical speed profile of the gate 2 during the opening process. In an acceleration phase in the time interval between t = 0 and t = t ₁ , the speed v of the door leaf 2 starting from v = v ₀ linearly increased up to a maximum speed v = v _max (range I). In a subsequent area II between t = t ₁ and t = t ₂ becomes the gate 2 move at a constant speed v = v _max . In a subsequent braking phase between t = t ₂ and t = t ₃ is the gate 2 braked to a standstill, causing the gate leaf 2 is retracted to its open position. In the present case, the speed is reduced linearly in the braking phase. Alternatively, in the braking phase, the speed can be linearly reduced until a minimum speed is reached, so that then with this minimum speed of the gate 2 is retracted to its open position.

The speed profile for closing the door generally has an in 3 corresponding temporal course of the speed of the gate 2 on. Typically, the maximum speed when closing the gate is chosen to be less than when opening the gate.

The specification of the speed of the gate 2 takes place by a pulse width modulation of the motor voltage of the electric motor. The corresponding time diagram of the voltage is in 2 shown. The electric motor will look like this 2 can be seen with voltage pulses of variable length acted upon. The pulse repetition frequency of the voltage pulses is chosen so that the electric motor registers only the time average of the modulated voltage. This depends on the pulse width modulation.

By changing the pulse width modulation is first the speed of the drive 4 reduced. This conditionally results in a change in the peripheral speed of the gate 2 ,

For parameterization of the drive device 1 the length of the door leaf is the only input parameter via the input unit 2 entered. From this input parameter then all other for the operation of the drive device 1 required parameters calculated. These are in the control unit 5 Characteristics stored in which different values of the length of the door leaf 2 corresponding values of the individual parameters are assigned. Alternatively, algorithms can be deposited by means of which an association is made between the input parameters and the parameters.

The parameters derived from the input parameter include in particular velocity parameters which define the velocity profiles for the closing and opening process. In the present case, each separate speed parameters in the control unit for the closing and opening process 5 calculated.

A first speed parameter is the maximum speed. This is reversed pro proportional to the length of the door leaf 2 varied. A second speed parameter is the beginning of the braking phase, ie the time t ₂ in 2 , The beginning of the braking phase is chosen earlier, the greater the length of the door leaf, whereby here too there is a linear relationship of the two parameters. The maximum speed is one of the speed of the drive 4 proportional size. The inverse proportionality of this size to the gate length is a substantially independent of the gate length peripheral speed of the gate 2 receive.

3 shows schematically by this parameter variation changed velocity profiles. Here are in 3 the speed profiles for three different lengths of gate 2 shown. The speed profile designated by a corresponds to the speed profile according to 2 , which for the specification of a certain value L ₀ the length of the gate 2 is obtained. By specifying a reduced value L = L ₀ - ΔL for the length of the door leaf 2 is the speed profile designated b in 4 receive. According to the inversely proportional dependence on the length of the gate 2 the values for the maximum speed are reduced from v _max to v _max , and the values for the start of the braking phase from t ₂ to t ₂ . By specifying a further reduced value L = L ₀ - 2 · ΔL for the length of the door leaf 2 will that be in 4 obtained with c speed profile. With this speed profile further reduced values v _{max ''} for the maximum speed and t _{2 ''} for the beginning of the braking phase are obtained.

Another parameter is the input parameter, ie the length of the door leaf 2 calculates a threshold value that defines the switch-on condition for a power shutdown of the swing gate. By a suitable in the electric motor or in the control unit 5 Integrated sensor technology, the current of the electric motor is calculated as a measure of the resulting load on the electric motor and thus the force acting. This force is rated at the threshold. As soon as the force exceeds the threshold, the drive is reversed 4 ,

The threshold value in the present case is proportional to the length of the door leaf 2 selected. Accordingly, the power shutdown starts with longer blades only at higher forces.

By calculating the parameters of the drive device 1 depending on the length of the gate leaf 2 the normative safety requirements for the operation of the swing gate can be met.

This is in the time chart according to 5 illustrated. 5 shows the limits to be met by acting on a test body forces that occur when the gate 2 impacted on the test body. It is true for the diagram in 5 the impact of the wing moving at a speed 2 to a standing test body at time t = 0. The safety standard requires that in the time interval between t = 0 and t = t _a , ie immediately after the impact, the forces impinging on the test body do not exceed the limit value S ₀ . In the subsequent time interval between t = t _a and t = t _b , the forces acting on the test body must not exceed the limit value S ₁ .

These requirements must be met in particular even if the outer end of the gate 2 impinges on the test body, ie where the greatest forces occur.

By varying the parameters, in particular the speed parameters according to 4 , the speed profile is adjusted to the respective length of the door leaf 2 customized. In general, the speed of the door leaf 2 the more reduced, the greater the length of the gate 2 is. This ensures that when hitting the gate 2 on the test body the forces acting on these as in 5 shown in the limits set by the limits S ₀ , S ₁ remain.

1

driving device

2

leaf

3

axis

4

drive

5

control unit

6

spindle

7

torque tube

Claims (17)

Drive device ( 1 ) for a swing gate or a swing gate, with a drive ( 4 ) and one by means of the drive ( 4 ) adjustable actuator for closing and opening a door leaf ( 2 ) of the swing gate or wing gate, and with a control unit ( 5 ) for controlling the drive ( 4 ), characterized in that the control unit ( 5 ) is assigned an input unit, via which as an input parameter, the length of the door leaf ( 2 ) and that the other parameters relevant to the operation of the revolving gate or wing gate in the control unit ( 5 ) are derived automatically from the input parameter. Drive device ( 1 ) according to claim 1, characterized in that in the control unit ( 5 ) Characteristic curves or algorithms are stored, which contain parameter values as a function of input parameter values. Drive device ( 1 ) according to one of claims 1 or 2, characterized in that speed parameters are derived from the input parameters which determine the speed profiles of the gate leaf ( 2 ) when opening and closing the swing gate or wing gate. Drive device ( 1 ) according to claim 3, characterized in that the speed parameter defining a speed profile of a maximum speed at which the door leaf ( 2 ), and are formed from the time of initiating a braking phase from the maximum speed. Drive device ( 1 ) according to claim 4, characterized in that the maximum speed inversely proportional to the selected length of the door leaf ( 2 ). Drive device ( 1 ) according to one of claims 4 or 5, characterized in that the time of initiation of the braking phase is chosen the earlier, the greater the length of the gate ( 2 ). Drive device ( 1 ) according to one of claims 1 to 6, characterized in that a threshold value is derived from the input parameter as a parameter, which defines the initiation of a force shutdown. Drive device ( 1 ) according to claim 7, characterized in that with the threshold value on the gate ( 2 ) force is evaluated, wherein the power shutdown is triggered when the force exceeds the threshold. Drive device ( 1 ) according to claim 8, characterized in that the height of the threshold value is proportional to the length of the door leaf ( 2 ). Drive device ( 1 ) according to one of claims 7 to 9, characterized in that during the power shutdown of the drive ( 4 ) is stopped or reversed. Drive device ( 1 ) according to one of claims 1 to 10, characterized in that the drive ( 4 ) is formed by an electric motor. Drive device ( 1 ) according to claim 11, characterized in that the electric motor is designed as a DC motor. Drive device ( 1 ) according to one of claims 11 or 12, characterized in that the actuating element of a spindle ( 6 ) is formed. Drive device ( 1 ) according to any one of claims 11 to 13, characterized in that as a measure of the on the gate ( 2 ) acting force of the current of the electric motor is determined. Drive device ( 1 ) according to one of claims 11 to 14, characterized in that for specifying the speed of the door leaf ( 2 ) the voltage of the electric motor by the control unit ( 5 ) is regulated. Drive device ( 1 ) according to claim 15, characterized in that the control is effected by a pulse width modulation of the voltage of the electric motor. Drive device ( 1 ) according to one of claims 1 to 16, characterized in that it can be used for a door.