WO2008092498A1

WO2008092498A1 - Drive apparatus

Info

Publication number: WO2008092498A1
Application number: PCT/EP2007/011317
Authority: WO
Inventors: Gerd Schaaf
Original assignee: Sommer Antriebs- Und Funktechnik Gmbh
Priority date: 2007-01-30
Filing date: 2007-12-21
Publication date: 2008-08-07
Also published as: DE102007004445A1; DE102007004445B4; CN101595271A; DE102007004445C5; DE102007004445A8; EP2115258A1

Abstract

The invention relates to a drive apparatus (1) for a hinged gate or swing gate, comprising a drive (4) and an operating element, which can be actuated by means of the drive (4), for closing and opening a leaf (2) of the hinged gate or swing gate, and comprising a control unit (5) for controlling the drive (4). The control unit (5) has an associated input unit by means of which the length of the gate leaf (2) can be input as an input parameter. The other parameters which are relevant for operating the hinged gate or swing gate are automatically derived from the input parameter in the control unit (5).

Description

driving device

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

Such drive devices generally comprise a drive, which is formed by an electric motor, and which drives an actuating element for opening and closing the gate of a swing gate. The actuating element is typically formed by a spindle which converts the rotational movement of the electric motor into a linear movement of a torque tube or the like, which is coupled to the gate. Corresponding arrangements are known for swing gates and doors.

To operate the swing gate, the drive is controlled by a control unit. Typically, a specific velocity profile is set via the control unit for opening and closing the swing gate. The speed profile consists of an acceleration phase in which the speed of the gate is accelerated to a maximum speed, a middle phase in which the gate is moved at the maximum speed, and a braking phase in which the gate is decelerated from the maximum speed to a stop ,

As a safety measure in known drive devices for swing gates a so-called power shutdown is provided. This force shutdown provides for reversing the swing gate when the force acting on the gate exceeds a certain threshold. Here, the motor current of the electric motor is evaluated, which is a measure of the load torque and thus the applied force.

By this measure, it is ensured that when the door leaf against an obstacle of the door leaf does not continue to run, but is stopped and then runs in the opposite direction.

This force shutdown should not only serve to protect the swing gate against damage but also for the purposes of personal protection.

In known drive devices of this type, the threshold value, which defines the initiation of the force shutdown, is set via a potentiometer on the control unit. The disadvantage here is that the respective operator must set the threshold itself. In order to be able to make this setting in such a way that no hazards arise, the operator must know the respective boundary conditions and parameters of the swing gate exactly, i. H. the adjustment process is extremely complex. A particular disadvantage here is that the setting of the power cut by the operator is often deliberately manipulated. The threshold is then set so high that the power shutdown does not respond. Although this ensures uninterrupted operation of the swing gate. The desired security function is disabled.

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

The applicable safety standards for swing gates require that, in the event of an impact of the gate on an obstacle from the moment of impact to a point after impact, the force acting on the obstacle must not exceed a first limit and within a subsequent time interval force second limit below the first limit. Compliance with these normative limits is still relatively unproblematic as long as the gate of the swing gate has a relatively small length. In the case of long leafs, the length of the gate leaf lever and the high mass of the gate leaf means that the force on an obstacle at the gate leaf immediately after the impact is so great that the permissible limits are exceeded.

The invention has the object of providing a fault and manipulation-proof operation of a drive device for a swing gate with the least possible design effort.

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

The drive device according to the invention comprises a drive and an actuating element adjustable by means of the drive for closing and opening a gate leaf of a gate such as a revolving gate or a wing gate. The drive device also has a control unit for controlling the drive. The control unit is assigned an input unit, via which the length of the door leaf can be entered as an input parameter. The other parameters relevant to the operation of the gate in the control unit are derived automatically from the input parameter. In general, the drive device according to the invention can also be used for doors. Without limiting the generality, the invention is explained below for a drive device controlling a rotary door.

A significant advantage of the invention is that by entering a single input parameter a mode setting of the drive device is possible, which allows safe operation for different Torkonfigurationen. The invention is based on the finding that From the length of the door leaf as input parameters all other relevant for a safe operation of the swing gate parameters can be derived.

The length of the door leaf of the swing gate is an extremely easily determinable parameter of the swing gate, the specification of which is easy to carry out even by untrained personnel. The parameterization of the drive device to different Torkonfigurationen is therefore easy and fast durchfuhrbar.

It is particularly advantageous that by specifying the length of the door leaf as the only input parameter, the normative safety regulations for the operation of the swing gate can be met.

In a particularly advantageous embodiment of the invention, speed parameters are derived for this purpose from the input parameter, which define the speed profiles when opening and closing the rotary door. These speed parameters are advantageously formed by the maximum speed with which the door leaf is moved and by the time of the start of the braking phase, in which the door leaf is braked from the maximum speed to a standstill.

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

By this choice of the speed parameter, the speed of the door leaf is adapted to the length of the door leaf not only during the phase in which the door leaf is moved at a constant maximum speed, but also in the chronologically preceding acceleration phase and in the time-lagged braking phase when the door leaf strikes an obstacle, the permissible normative limit values for the forces occurring are not exceeded. This is due to the fact that the forces occurring are proportional to the kinetic energy of the gate, which increases quadratically with the speed. Due to the inventive reduction of the maximum speed inversely proportional to the door length and the corresponding variation of the beginning of the braking phase, essentially independent of differences in the mass of the door leaf, the forces occurring in the event of an impact of the door leaf on an obstacle do not exceed the permissible limit values.

The term maximum speed means a variable proportional to the speed of the drive. Since this is varied inversely proportional to the gate length, a substantially constant for different gate lengths peripheral speed of the swing gate is obtained.

In a particularly advantageous embodiment of the invention, the input parameter is used to derive the length of the door leaf and also the threshold value for the force shutdown. The height of the threshold value is chosen to be proportional to the length of the door leaf. This means that the force shutdown starts with increasing door length even with larger force values.

This is based on the fact that the gate-length-dependent selection of the speed parameters already ensures that the forces occurring in the event of an impact on the door do not exceed the normative limit values, so that no danger can occur, in particular for persons. The threshold value of the power cutoff can thus be adapted to the dimensioning of the door leaf, in particular its length. The adaptation takes place in such a way that, irrespective of the door length, the sensitivity of the power cutoff remains constant. A measure of the sensitivity is the torque acting on the drive.

Due to the opposing dependencies of the maximum speed on the one hand and the threshold value of the power shutdown on the other hand of the length the door leaf is also a simple way tamper-proof parametrization of the drive device ensured.

Namely, when an operator attempts manipulation to set too short a value for the length of the door to achieve faster opening and closing of the door, thereby increasing the respective maximum speed, it becomes a correspondingly lower value for the threshold value the power shutdown in the control unit specified. This leads to a considerably reduced availability of the drive device, since the power cutoff responds even with small disturbances such as gusts of wind and then stops and reverses the door movement.

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

Figure 1: Schematic representation of a drive device for a

Hinged gate.

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

FIG. 3: Speed profile for the opening process of the revolving gate according to FIG. 1.

FIG. 4: Gate length-dependent variation of the velocity profile according to FIG. 1.

Figure 5: temporal force curve upon impact of the revolving gate according to FIG

1 on an obstacle.

Figure 1 shows schematically a drive device 1 for a swing gate. The swing gate has a gate 2, which in relation to a vertical direction (perpendicular to the plane in Figure 1) extending axis 3 is rotatably mounted.

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

The drive device 1 is used in the present case as a spindle drive, which has a spindle 6 as an actuating element. About this, the rotational movement of the drive 4 is converted into a linear movement of a torque tube 7. The torque tube 7 is coupled to the gate 2. Due to the linear movement of the push tube 7, the door leaf 2 is rotated about the axis for opening and closing the swing gate. The directions of rotation for closing and opening the door are designated "to" and "on" in FIG. 1. Other input units in the form of different user interfaces are also possible.

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

When opening and closing the swing gate the gate 2 is moved in each case according to a predetermined velocity profile. FIG. 3 shows by way of example a typical velocity profile of the door leaf 2 during the opening process. In an acceleration phase in the time interval between t = 0 and t = ti, the speed v of the door leaf 2 is increased starting from v = Vo linearly up to a maximum speed v = W _103x (area I). In a subsequent region II between t = ti and t = t ₂ , the gate 2 is moved at a constant speed v = v ^. In a subsequent braking phase between t = t ₂ and t = t ₃ , the door leaf 2 is decelerated to a standstill, whereby the door leaf 2 is retracted to its Öffhungsstellung. In the present case, the speed is reduced linearly in the braking phase. Alternatively, in the braking phase, the speed can be reduced linearly until a minimum speed is reached, so that the door leaf 2 is then retracted to its opening position at this minimum speed.

The speed profile for closing the door generally has a time profile of the speed of the door leaf 2 corresponding to FIG. 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 door leaf 2 is effected by a pulse width modulation of the motor voltage of the electric motor. The corresponding time diagram of the voltage is shown in FIG. The electric motor is acted upon as shown in Figure 2 can be seen with voltage pulses of variable length. 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, the speed of the drive 4 is first reduced. As a result, there is a change in the peripheral speed of the door leaf 2.

For parameterization of the drive device 1, the length of the door leaf 2 is input via the input unit as the only input parameter. From this input parameter all further parameters required for the operation of the drive device 1 are then calculated. For this purpose, characteristic curves are stored in the control unit 5, in which different values of the length of the door leaf 2 are assigned corresponding values of the individual parameters. 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 operation. In the present case, separate speed parameters in the control unit 5 are calculated in each case for the closing and opening operation.

A first speed parameter is the maximum speed. This is varied inversely proportional to the length of the door leaf 2. A second speed parameter is the beginning of the braking phase, ie the time t ₂ in FIG. 2. The earlier the braking phase is started, the greater the length of the door leaf, whereby here too there is a linear relationship between the two parameters. The maximum speed is a proportional to the speed of the drive 4 size. Due to the inverse proportionality of this size to the gate length, an essentially independent of the gate length peripheral speed of the gate 2 is obtained.

FIG. 3 shows schematically velocity profiles changed by this parameter variation. The speed profiles for three different lengths of the door leaf 2 are shown in FIG. The speed profile designated by a corresponds to the speed profile according to FIG. 2, which is obtained for specifying a specific value Lo of the length of the door leaf 2. By specifying a reduced value L = Lo - ΔL for the length of the door leaf 2, the speed profile designated b is obtained in FIG. Corresponding to the inversely proportional dependence on the length of the door leaf 2, the values for the maximum speed are reduced from Vm _ax 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 = Lo - 2 ΔL for the length of the door leaf 2, the velocity profile indicated by c in FIG. 4 is obtained. This speed profile will continue to be reduced values Vmax "for the maximum speed and t ₂ > - obtained for the beginning of the braking phase.

As another parameter, the input parameter, i. H. the length of the door leaf 2 calculates a threshold value, which defines the switch-on condition for a force shutdown of the swing gate. By means of a suitable sensor integrated in the electric motor or in the control unit 5, the current of the electric motor is calculated as a measure of the load occurring at 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 4 is reversed.

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

By calculating the parameters of the drive device 1 as a function of the length of the door leaf 2, the normative safety requirements for the operation of the swing gate can be met.

This is illustrated in the timing diagram according to FIG. FIG. 5 shows the limit values of forces acting on a test body that arise when the door leaf 2 impacts the test body. In the case of the diagram in FIG. 5, the impact of the door leaf 2 moving at a speed strikes a stationary test object 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 So. 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 Si. These requirements must be met in particular even if the outer end of the door leaf 2 impinges on the test body, ie where the greatest forces occur.

Due to the variation of the parameters, in particular the speed parameters according to FIG. 4, the velocity profile is adapted to the respective length of the

Gate 2 adapted. In general, the speed of the door leaf

2, the greater the reduction in the length of the door leaf 2. As a result, when the door leaf 2 strikes the test body, the forces acting on it, as shown in FIG. 5, remain in the limits defined by the limit values So, S ₁ .

LIST OF REFERENCE NUMBERS

0) Drive device

(2) gate leaves

(3) axis

(4) drive

(5) control unit

(6) Spindle

(7) Push tube

Claims

claims

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

2. 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 in dependence on input parameter values.

3. Drive device (1) according to any one of claims 1 or 2, characterized in that derived from the input parameters speed parameters which define the speed profiles of the door leaf (2) when opening and closing the swing gate or the wing gate.

4. Drive device (1) according to claim 3, characterized in that the speed profile defining a speed parameter of a maximum speed at which the door leaf (2) is moved, and formed by the time of initiating a braking phase, starting from the maximum speed.

5. Drive device (1) according to claim 4, characterized in that the maximum speed is inversely proportional to the selected length of the door leaf (2).

6. Drive device (1) according to any one of claims 4 or 5, characterized in that the time of initiation of the braking phase is chosen earlier, the greater the length of the gate (2).

7. 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 that defines the initiation of a force shutdown.

8. Drive device (1) according to claim 7, characterized in that with the threshold value on the door leaf (2) acting force is evaluated, wherein the power cut is triggered when the force exceeds the threshold.

9. 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).

10. 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.

11. Drive device (1) according to one of claims 1 to 10, characterized in that the drive (4) is formed by an electric motor.

12. Drive device (1) according to claim 11, characterized in that the electric motor is designed as a DC motor.

13. Drive device (1) according to any one of claims 11 or 12, characterized in that the actuating element is formed by a spindle (6).

14. Drive device (1) according to any one of claims 11 to 13, characterized in that as a measure of the on the door leaf (2) acting

Force the current of the electric motor is determined.

15. Drive device (1) according to one of claims 11 to 14, characterized in that for the specification of the speed of the door leaf (2), the voltage of the electric motor by the control unit (5) is regulated.

16. 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.

17. Drive device (1) according to one of claims 1 to 16, characterized in that it can be used for a door.