EP3074583B1 - Method for operating an industrial door with a force detection device - Google Patents

Description

The invention relates to a method for operating an industrial door by means of a gate control, which is associated with a drive moving the industrial door with measurable force and which is equipped with a force detection, measured by the force used by the drive during each drive of the industrial door and in the form of a force curve stored comparably in a memory with the following force curve, wherein if a comparison of the force curves above predetermined limits is detected, when driving upwards a stop is performed by the gate control upon reaching the limit and is switched to reverse reversing.

In known industrial doors, especially sectional, rolling, high-speed, cover folding, side folding doors and sliding doors, a so-called force detection is known, for which complicated spiral cables, tedoses, optical sensors and slack rope switches are necessary. Another disadvantage is that this known force detection, if it is ever used, is very prone to failure, because of recognized problems, the industrial door stuck and then a craftsman or a maintenance technician must be consulted to resolve the problems encountered. Since the maintenance technicians are usually specialists, these are not immediately available for such companies and downtimes can not be avoided. From the EP 1 447 518 A1 and the EP 1 304 442 A2 It is known to use sensors and similar components to determine the cause of a stoppage of the drive motor. Also the EP 1 321 619 A2 teaches a drive control device with operating state information means which indicates how and where the intervention of a service worker is necessary. At the establishment, the from the US 5,278,480 A is known, the force expended by the drive is determined in the form of a force curve on a force detection component and compared with the stored in the memory previous power curve. When an endangered state is detected, the drive is influenced, ie stopped when driving upwards and switched to reversing when driving downwards. In all cases, a service technician must be called to remedy the dangerous situation.

The invention has for its object, with smaller, surmountable problems to enable further operation of the industrial door and without the involvement of a service force.

The task is gem. the invention achieved in that in a drive with a force curve at each trip of Industrietores investigating force detection component that is at the same time this force curve comparatively formed with the stored in the memory, previous power curve, wherein when detecting a dangerous situation when driving down only in the real emergency of the drive is switched to reversing. This achieves the method according to the invention in that a stop when reaching a predetermined limit value and when driving down through the force detection by repeating the door control when driving upwards and repeated thresholds reached the response of a dead man's circuit and upon detection of such a problem in the downward movement the then existing force curve is re-taught by pressing the deadman, as far as the problem is manageable deadman. Thus, first of all, a method is made available which gives the possibility of getting along with the components that are actually available and of enabling a precise determination of the applied force only by adding appropriate software or the corresponding force detection component. As is known, this force to be determined is recorded in the form of a force curve and stored in a memory so that it is comparable with the force curves that follow. If differences then occur and this leads to a dangerous situation, the Drive reversed, ie moved to the upper end position. It is important that the dangerous situation can be properly identified without the need for expensive additional equipment. Moreover, it is advantageous that not only certain values are determined by determining the force curve, but also the change in the values, which is important for determining and evaluating the dangerous situation. The industrial door can thus be operated so that the drive is equipped with the force detection, which measured at each drive of the industrial door, the force expended by the drive and stored in the form of a power curve in a memory with the following force curve comparable, and if compared As already mentioned, the gate control of the force detection is switched to reversing and, if necessary, repeating the downwards travel as well as repeated limit value reaching deadman circuit, while in upwards driving through the gate control upon reaching the limit value, a stop is performed , Thus, with respect to the upward movement, the security is given that objects hooked to the door or even a person attached to it are not put in danger because the industrial door is immediately stopped. The impairment can then be remedied and the operation of the industrial gate resumed. In the more critical downwards driving, when a limit value is detected, ie when the force curves deviate too much, after the reversing, which is then automatically occurring, ie when the industrial gate is raised again, the downward travel can be resumed. If the reversing occurs again because the corresponding force limit value is reached, the system automatically switches to deadman switching, ie the corresponding button for the downward movement can now be pressed continuously to cause the industrial gate to continue to move downwards and overshoot the limit value, so that too at the same time a new force curve results, which then ensures trouble-free further operation of the industrial gate. Only then, if on further descents automatically reaches a limit again and the industrial gate is reversed, the maintenance service must be turned on. The human effort in the operation of such industrial doors can thus be significantly reduced.

As already mentioned above, it is advantageous if when detecting a problem in the downward drive by the force detection, the existing power curve is re-taught by pressing the deadman, as far as the problem is manageable deadman. Through this procedure, problems that have occurred by burping the industrial door on any objects or on a person can be easily detected and corrected, only if then reversing automatically occurs again, a problem that can not be repaired without repair exists.

A further advantage is that the drive is equipped with an automatically switchable reserve drive force. As a result, special power increases (jamming) can be overcome in the short term.

Furthermore, it is advantageous if, when predetermined limit values are exceeded, this is indicated optically and / or acoustically.

To implement the method, a device is provided in which the process of the industrial gate monitoring and controlling gate control is assigned a force necessary to move the industrial door measuring drive with force detection component, which at the same time the respective power curve with the last stored in a memory, previous force curve Comparing and recognizing the drive is accordingly influencing adjustable upon detection of a dangerous situation. According to the invention, this gate control is associated with a dead man's circuit with a deadman switch which, when the force curve and response of a force detection component increase, controls the door drive during a repeated downward travel and the respective force curve is re-taught with an insurmountable obstacle. Thus, in critical downhill driving is given the opportunity to run over a non-problematic limit without the need for a service force. Automatic read-in of the "new" force curve makes trouble-free further operation of the industrial door possible.

In an expedient embodiment of the invention, it is provided that the force detection component is designed to detect the dangerous situation via an impermissible increase in the force or the force curve, wherein this point of impermissible increase of the force curve is adjustable. With such an embodiment, it is advantageously possible to determine a force curve via the force detection component-where a frequency converter or the like is suitably used as the force detection component. It is not only the force curve measurable, but it can also be specified exactly at which limit the door control is "informed" accordingly, the force detection component between 1 and 100% increase in force is adjustable. Both when driving up the gate as well as when driving down the gate is always a certain increase in force recorded, so it would not be advantageous if the door control would be activated even with a small increase in power. As a rule, with a 30% or 50% increase in force, the force detection component will be designed or set to control the door control.

In order to bridge any strong force increases that may occur, for example, when slightly jamming the industrial door, it is advantageous if the industrial door moving drive is equipped with an automatically switchable reserve driving force. Due to such equipment of the drive can be controlled in the short term, such increases in force.

It is optimal if, as proposed, the gate control upwards and downwards triggering buttons are assigned to a to be reached from the ground control box are assigned and wherein the downward trip triggering switch is formed in the case of repeated detection of a dangerous situation in Totmannschaltungsbetrieb switching. While at the first detection of a danger point or a dangerous situation, the industrial door is simply brought down again to read a new force curve, the dead man switching operation gives the possibility to determine the danger point either accurately and then even with reversing gate again or identify but to bridge the gate by continuous operation of the downward trip trigger button the "small" danger situation, to determine the appropriate force curve and then ensure the trouble-free operation of the industrial gate. Only then, if it is made clear by continuous reversal of the industrial gate during the descent, that a "special" damage is present, you will turn on a maintenance technician willy-nilly.

When driving uphill, problems can be caused by something hooked to the gate, or for example, a child has hung himself and can be pulled up with. To prevent this safely, the invention provides that the door control when operating the upward trip triggering button when detecting a dangerous situation, the industrial door is executed via the software immediately stopping. Thus, a collection security is realized, which meets the legal and regulatory requirements.

The determined by the force detection component danger or impairment of the industrial gate should also be made clearly recognizable, provided that the drive and the door control receiving box and the control box assigned a signal light and control technology connected to the door control or the force detection component. The force detection component thus addresses the gate control and at the same time the signal lights, so that the user is warned in a timely and accurate. Of course, too, is an acoustic Signal and a corresponding encoder possible or even the use of both signal devices.

The force detection component is adjustable with respect to the increase of the force, as stated earlier. For larger changes in the door behavior, however, the otherwise automatic control algorithm can no longer be influenced, ie. H. the force detection component is executed with respect to the force detection from the outside uninfluenced. Even with loss of power, the last power curve can be stored in memory and recognized because gem. the invention of the memory itself is designed as a nonvolatile memory. This satisfies the TÜV regulations in an advantageous manner.

The invention is characterized in particular by the fact that a device and a method are provided with which it is possible to operate large and small industrial doors with an effective force detection with dead man's circuit without much effort and in particular expensive installations. Above all, the dead man, the possibility is given to operate such industrial doors with an effective force detection, which is useful and necessary to use in a sectional door or similar gates, since there the springs or the spring force after a certain number of opening operations changed or the rollers and hinges can become sluggish. Using force detection, an adapted force curve is continuously determined and stored in the memory, so that these "creeping" resulting problems are no longer because the corresponding force curve takes into account the adverse effects not fundamental. If, on the other hand, an additional problem occurs, when comparing the force curves with excessive divergences, the force recognition or the force detection component with dead man's circuit comes into action and then enables further operation if the problem is correspondingly low. When driving over or passing through this small obstacle, the force detection component reads a new force curve that takes this into account so that the industrial door can be operated again. Are there any more, because of bigger problems, a maintenance technician has to be switched on first. Thus, the number of problems is much lower than in previous force detection devices and in addition, all safety rules are fully considered and can be effectively observed.

Figur 1

ein geöffnetes Industrietor,

Figur 2

die Anordnung des Antriebes mit Torsteuerung und Krafterkennungsbauteil,

Figur 3

den Regelkasten mit den zur Bedienung des Industrietores notwendigen Tastern und

Figur 4

verschiedene Kraftkurven für die Aufwärts- und Abwärtsfahrt.

Further details and advantages of the subject invention will become apparent from the following description of the accompanying drawings in which a preferred embodiment with the necessary details and individual parts is shown. Show it:

FIG. 1

an open industrial door,

FIG. 2

the arrangement of the drive with gate control and force detection component,

FIG. 3

the control box with the necessary to operate the industrial door and buttons

FIG. 4

different force curves for up and down travel.

FIG. 1 shows an open industrial door 1, which is raised via the not recognizable here drive 2 in this position. The non-recognizable drive 2, the gate control 4 is assigned. At the upper edge of the door opening a Radarfühler 5 is positioned and at the lower edge 8 of the industrial door 1 sensors 6 are mounted so as to be able to open the industrial door on arriving vehicles in a timely manner.

Above the bottom 7, a control box 9 is mounted on the inside or on the outside of such a door, the various buttons are assigned, which is based on the description FIG. 3 will be explained in more detail.

The industrial door 1 moves within the door opening and guided by Torständer 20th

FIG. 2 shows the arrangement of the drive 2 above the industrial door 1. The drive and the associated door control 4 are housed in a box 3. In the same housing part in which the door control 4 is fixed, a force detection component 16 is also accommodated, via which the force required for ascending and descending the industrial door 1 is determined and held in the form of a force curve. These force curves 22, which in FIG. 4 are shown are stored after determination in a memory 17, so that they can be compared with the new force curve 23 respectively. Due to the occurring values, problems can be identified by the comparison and, as explained further below, can be remedied. On the box 3, a signal lamp 19 is mounted, which takes effect as well as the control box 9 associated signal lamp 12. In this way, the user or owner is made aware that there are any problems.

FIG. 3 shows the control box 9 in plan view, it can be seen that a button 10 for the upward movement and a second button 11 are provided for the downward movement of the industrial door 1. In addition, the already mentioned signal light 12 is present, which alerts the user that any problems may exist.

When you press the button 10, the industrial door 1 moves to the upper end position, while z. B. the force curve 15, the in FIG. 4 is shown is determined. If this is now a certain amount above the previous force curve 18, as in FIG. 4 shown, this is indicated by turning on the signal lights 12, 19 and causes either the industrial door 1 reversed, that is moved into the upper end position or is stopped when driving up. The latter is the case when the force curve 22 is significantly different from the force curve 23.

Occurs when driving further down after pressing the button 11 again a situation of the force curves 22 and 23, and the industrial door 1 is driven back to the upper end position, a further operation only on the then done in deadman switch button 11, which then serves as deadman button 25. Only with continuous pressure, it is then possible to lower the industrial door 1 again and to determine a new force curve. If this is so possible, that is, the industrial door 1 reaches the lower end point of its career, can be driven with the then new force curve 22, as far as no further problems occur.

Advantages are thus that the industrial door 1 can be restarted without a separate or specialized technician, if corresponding "minor" problems during downhill or uphill driving have occurred. The force detection component 16, that is, for example, a frequency converter, ensures that a new force curve 15, 18, 22, 23 is recorded and stored in the memory 17 on each trip both on and off. Thus, the system can advantageously adjust to changes and ensure continued operation of the industrial door 1. The force curves are stored in the non-volatile memory 17, so that even in case of power loss, the safety conditions can be met, which require the TÜV regulations. For larger changes in the behavior of the door, the automatic control algorithm can no longer correctively intervene, but the door can still be closed or the problem can be remedied, for which purpose the deadman circuit offers itself as proposed according to the invention. While the industrial door 1 is stopped when driving upwards, which represents a safety catch, the signal light 19 on the box 3 of the door control 4 lights up when reversing to the upper end position after the drive downwards. As a result, the operator sees that the force detection has triggered. Of course, this can also happen that the industrial door 1 has reversed by the emergence of a person or an object. By operating the button 11, the industrial door 1 moves automatically down and the indicator or signal light 19 goes out. But there is also the possibility that the industrial door 1 is reversed again in the operation of the key 11 and moved back into the upper end position. This means that the force detection has detected a problem that requires that the force curve be re-read. Reading in or teaching in happens so that the button 11 is held at departure, at the same time the signal light 19 flashes on the door control 4. By holding the button 11 to the lower end position learns the force detection in the background, a new force curve. If the door reaches the lower end position, then the signal light 19 goes out, so that the industrial door 1 is then able to open and close automatically.

Should a serious problem occur during the next downhill drive, the industrial door 1 reverses again and remains in the upper end position. The user can then repeat this process again and possibly close only the industrial door 1 and then leave the door system to be maintained by a specialist.

Claims (10)

1. Procedure for operating an industrial door (1) with the help of a door control unit (4) that is assigned a drive (2) that moves the industrial door (1) with measurable force and that is fitted with a force sensor through which the force applied by the drive (2) is measured on every movement of the industrial door (1) and saved to a memory (17) in the form of a force curve (18, 23) comparable with the subsequent force curve (15, 22), whereby if on a comparison of the force curves (15, 22, 18, 23) an overrun of given limit values is apparent, the door control unit (4) carries out a stop in the case of upward travel when the limit value is reached, and in the case of downward travel switching to reverse is carried out
   characterised in that
   in the case of upward travel the door control unit (4) carries out a stop when a preset limit value is reached, and in the case of downward travel a repeat via the force sensor, and if the limit value is reached again, a response by a dead-man circuit, and if a problem of this kind is detected on downward travel, the then existing force curve (18, 23) is re-programmed by actuating the dead-man circuit, if the problem can be overcome with a dead-man circuit.
2. Procedure in accordance with Claim 1
   characterised in that
   if given limit values are overrun this is indicated optically and/or acoustically.
3. Procedure in accordance with Claim 1
   characterised in that
   the drive (2) is equipped with automatically activatable reserve drive force.
4. Device for detecting the force applied by the drive (2) when moving industrial doors (1) and thus to carrying out the procedure in accordance with Claim 1, with a door control unit (4) monitoring and controlling the movements of the industrial door (1) that is assigned a drive (2) moving the industrial door (1) with measurable force, which is assigned a sensor component (16) measuring the force curve (15) on all travel of the industrial door (1) that at the same time can be set to compare this force curve (15, 22) with the previous force curve (18, 23) stored in a memory (17) of the control unit (4) and if a hazardous situation is detected can influence the drive (2) during upwards or downwards travel, characterised in that
   the door control unit (4) has a dead-man circuit that is switched by the door control unit (4) on downward travel through the force sensor on a repeat as well as if the limit value is reached again, whereby if a problem of this kind is detected on downward travel, the then existing force curve (18, 23) is re-programmed by actuating the dead-man circuit, if the problem can be overcome with a dead-man circuit.
5. Device in accordance with 4
   characterised in that
   the force sensor component (16) can be set to a predefined point of the inadmissible increase in the force curve (15, 18, 22, 23) namely between 1 and 100% force increase.
6. Device in accordance with Claim 5
   characterised in that
   the drive (2) is equipped with automatically activatable reserve drive force.
7. Device in accordance with Claim 4
   characterised in that
   the pushbuttons (10, 11) activating upward travel and downward travel are assigned to the door control unit (4) and are assigned in a control box (9) that can be accessed from the floor (7) and whereby the pushbutton that activates downward travel (11) is designed to switch to dead-man circuit mode if a recurrent hazardous situation is detected.
8. Device in accordance with Claim 4
   characterised in that
   the door control unit (4) is designed to stop the industrial door (1) immediately through the software if the pushbutton that activates upward travel (10) is actuated on detection of a hazardous situation.
9. Device in accordance with Claim 5,
   characterised in that
   a signal lamp (12, 19) is assigned to the box (3) holding the drive (2) and the door control unit (4) and to the control box (9) and connected with the door control unit (4) and/or force sensor component (16) for control purposes.
10. Device in accordance with one of the above Claims, characterised in that
    the force sensor component (16) is designed to protect the force sensor against forces acting from outside and the memory (17) as a non-volatile memory.

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