DE202010007951U1 - Assembly of an automatic gate with vertical movement - Google Patents

Abstract

An assembly of an automatic door with vertical movement, comprising a gate with at least one element with a substantially linear stroke, a motorized device for opening and closing the door, and a control unit which controls the motor device, characterized in that it also has one on one element accelerometer mounted with a substantially linear stroke of the gate and arranged to detect the acceleration of the element, a device for comparing the measured value of the accelerometer with a range of predetermined values, and a device for actuating the motor device via the control unit if the measured value of the accelerometer is not in the range of predetermined values.

Description

Field of the invention

The The present invention relates to an assembly of an automatic Gates with vertical movement, comprising a gate with at least an element with a substantially linear stroke, a motor Device for opening and closing of the gate as well as a control unit which controls the motor controls.

State of the art

To the prior art, various automatic gates are known such as those in the form of a roller shutter with horizontal Slats are designed, the industrial roll and folding high-speed doors etc. Some of these gates are made with flexible material with tarpaulins or without horizontal reinforcements equipped, and others are made of a variety of stiff or semi-rigid slats. For roller shutters, the slats or the tarp wrapped around a drum when the gate opens while at Folding gates generally the different sections that the gate form, be gathered together.

The Industrial high speed doors are commonly used for example in Warehouses or facilities used where to look different areas establish the temperature, the draft, etc. wants to separate, but at the same time the frequent Traffic of carts and the like enable got to.

The Control unit can open and closing completely automatic control to lift the gate when it is the approach recognizes a person or a vehicle, and lower it again, if the person or vehicle crossed the gate. The Cognition can be done in many different ways: radar, photocell, Magnetic sensor, etc. It can also opening pushbuttons or -handsets be provided, or even remote controls.

Also force the regulations, with the gate any kind of security system to link, To prevent the gate from closing a person or a vehicle can damage who are in his path for some reason. The damage can be done by be the pressure that the gate exerts on the obstacle, the partial due to the weight of the gate, but in some cases in fractions of a second after the impact by the engine practiced Increased power when, for example, in a roller shutter, the slats stack each other and get the power of the engine over the Slats up to the obstacle transfers.

The Regulations limit both the maximum force of the obstacle may be exposed, as well as the maximum time over which this force is allowed to act, and the safety systems must open the door Guarantee gates before these maximum values are exceeded.

To Some known systems include a hollow security band Elastomeric material located at the bottom of the door, to stay in contact with the ground when the gate is closed is; inside this band is a touch sensor, so that when the band deforms, for example because of it an obstacle hits, the contact closes and the control unit of the Tores reverses the movement of the engine and reopens the door. It also gives security tapes, which contain an optical sensor: in this case interrupts the deformation of the material of the tape transmission between a transmitter and a recipient, which are located at the ends of the tape, and allows that To capture.

of course is the installation of the safety bands relatively complex. The band itself must have a shape that capable of acting in the event of impact in a suitable manner to deform and be good in the closed position of the gate to adapt to the ground; Furthermore its assembly requires adding some profiles at the bottom Part of the gate to hold the tape.

A Another weak point of these systems is that the security tapes during the lifetime the gate slightly deteriorate, which is why they require adequate maintenance require. In fact, it worsens on the one hand, the band of elastomeric material itself, because it is the Weathering and deformation is subjected to it is when it is in the closed position (to ensure that the gate is well adapted to the ground, and so the danger too reduce that the gate can break open), which is why a moment comes since the acquisition is erroneous and the band needs to be replaced; On the other hand, slightly small openings are formed in the band and cracks through which dust and moisture can enter a deterioration of the contacts and / or the head of the sensors cause.

It also provides security systems based on optical sensors, such as photocells on either side of the goal frame are arranged to detect obstacles in the path of the gate and the closing movement to stop before a touch enters with the obstacle.

These systems have the advantage that in principle they avoid any contact of the gate with the obstacle and not the dangers of Ver deterioration of other systems; of course, if only a few sensors are arranged, the system will not detect the entire gate passage, which is why it is possible that an obstacle in the closing path will not be detected and therefore the gate will not stop; it is also possible to install sensors to cover the entire gate, but in this case the system has increased costs. In addition, the installation of the sensors is not easy in any case.

Description of the invention

outgoing From the above, it is an object of the present invention Invention, an effective and reliable system with easy installation and maintenance at a relatively reduced cost to deal with the damage in the Fall to avoid or minimize the gate on its way while the closing movement meets an obstacle.

These Task becomes according to claim 1 fulfilled, by placing an assembly of an automatic door with vertical movement from the mentioned Type is created, which is characterized in that it also has a mounted on an element with a substantially linear stroke of the gate and arranged to detect the acceleration of this element Accelerometer, a device for comparing the measured value of the accelerometer with a range of predetermined values and a device for actuating the motor device over the control unit comprises, if the reading of the accelerometer is not is within the range of predetermined values.

With This design manages the movement of the gate automatically and essentially immediately reverse this once inadvertently bouncing on an obstacle, since this impact is an unexpected change the speed of the gate element is generated at which the accelerometer is arranged.

simultaneously the acquisition system has relatively reduced costs and is easier and faster to install than the security systems According to the state of the art, which makes it both new to gates even existing gates can be mounted. The system requires little maintenance, since all the components are completely in front of the Environmentally protected in housings or servings can be located which are not subject to any stress or deterioration.

Preferably The accelerometer is near the bottom of the gate.

In embodiments The invention relates to the device for comparing the measured value of the accelerometer with a range of predetermined values connected to the accelerometer.

The Device for comparing the measured value of the accelerometer with a range of predetermined values preferably comprises a device for converting the measured value of the accelerometer into data, which represent the speed of the gate and their comparison with a range of predetermined speed values.

Preferably The control unit includes calibration means to set the range of predetermined Set values. In embodiments According to the invention, these calibration means are suitable for the range of predetermined Set values based on measurements taken during at least a closing operation of Tories were taken without obstacles.

According to one embodiment the control unit comprises a device for processing the measured value of the accelerometer and to converting it into data which show the speed of the gate; in this case this data, which represent the speed of the door, with a range of predetermined speed values compared.

In particularly expedient embodiments For example, the door assembly includes radio communication devices using the control unit and the accelerometer are connected.

The Door assembly can use a rollable or foldable high speed door a flexible tarpaulin, which in its lower part at least contains a rigid horizontal element; the accelerometer is then connected to this rigid element.

alternative For example, the door assembly may include a high-speed door that holds a plurality includes stiff horizontal elements, and the accelerometer is then connected to one of the lower elements of the door.

According to one another possibility For example, the door assembly includes a roller shutter type door with a plurality of horizontal slats, and the accelerometer is with connected to one of the lower slats of the gate.

Preferably The door assembly includes a power source for the accelerometer, the mounted on the moving part of the gate.

The Door assembly may as well a device for charging the power source via electromagnetic induction include.

The Device for charging over Electromagnetic induction can be a permanently mounted first coil outside of the movable part of the door, this first coil from the mains, as well as one on the moving part of the gate and with the power source of the accelerometer connected second coil; the power source of the accelerometer will then over the electrical induced by the first coil in the second coil Current charged when these coils are close to each other.

The first coil and the second coil can be mounted so that they are close to each other, when the gate is complete is closed, or alternatively, when the gate is fully open.

In an alternative embodiment The door assembly includes a solar module for charging the power source. The module can be mounted on the moving part of the door.

In embodiments of the invention, the power source of the accelerometer may be a capacitor, a primary battery or include a battery.

Short description of the drawing

To the better understanding of the above, a drawing is added in the schematic and by way of example only and not by way of limitation, a practical embodiment is pictured.

In the drawing shows

1 a schematic representation of a door assembly according to an embodiment of the invention; and

2 a schematic representation of a situation in which an obstruction gets in the way of the gate during the closing process.

Description of preferred embodiments

In 1 For example, the assembly of an automatic gate according to an embodiment of the invention comprises a gate 101 which is formed in this case of slats or transverse elements, wherein the element 110 the bottom one is an engine 112 and a control unit 100 which controls the movement of the gate.

On the other hand, the door assembly comprises an accelerometer 108 who is at the element 110 of the gate 101 is attached, by means of which the acceleration and the speed of this lower element 110 can be recognized.

The element 110 here is the lower slat of the gate; Similarly, with a flexible high speed door, it may be the rigid bar that is at the end of the tarpaulin. In all cases, the accelerometer is located at the lower part of the movable part of the door and is connected to a member having a substantially linear movement: that is, an element that does not rotate but at least during most of the closing operation of the gate moves in the vertical direction and holds in the plane of the gate.

The accelerometer detects the acceleration of the element at any moment 110 in the vertical direction.

Obviously, the speed of the item 110 and the gate zero (or reasonably zero) when the gate is in the full or full closure state and deviates from zero during the closing (lowering) and opening (lifting) movements of the gate.

The speed of the element 110 decreases abruptly and goes to zero (or reasonably zero) when an obstacle blocks the gate's path in its lowering motion during the closing process; this unexpected speed is the key indicator that enables the recognition of the situation of jamming and the possible presence of an obstacle.

Connected with the accelerometer 108 There is a control circuit which determines the speed from the detected acceleration and compares the determined speed with a range of predetermined speed values.

On this way will, if during of closing an accident occurs, this accident detected because of the reading of the Accelerometer is not within the range of predetermined values.

If the control circuit of the accelerometer 108 detects a speed outside the range of predetermined values, it sends a signal to the control unit 100 on the engine 112 acts to correct the movement of the gate by reversing the operation and reopening the gate.

last At the end the system is able to control the movement of the engine and the engine To reverse the door when a speed value is detected not the model determined from a range of given values corresponds, whereby a tolerance range is considered.

The Door assembly also includes Calibration or programming means for the purpose of the range specified Values of the speed and / or acceleration of the gate during the closing movement to be able to determine from measured values through the accelerometer during one or a few less complete closing operations of the gate, when this is free of obstacles is. In this way, the range of given values for each concrete gate after its installation and set before its commissioning become.

The control unit 100 is able to detect the position of the gate at any moment, for example via the engine 112 , and to transfer them to the accelerometer.

So The range of given values sets the expected behavior of the Gates over the time from the beginning of the closing process at with a certain tolerance range. Later, during normal operation during each Closing operation the data provided by the accelerometer with the range compared to predetermined values.

With the accelerometer 108 and the control unit 100 are respective radio transmitter / receiver 109 and 111 connected. This wireless communication allows the use of cables to connect the control unit 100 (static element) and the accelerometer 108 (moving element) to avoid. Alternatively, the use of special cables, such as flexible cables or spiral cables, for connecting the accelerometer and the control unit is possible.

In the illustrated embodiment The gate also includes a power source for the accelerometer with a charging system via electromagnetic Induction.

This is done with the accelerometer 108 a capacitor 107 high capacity connected, which allows to store large amounts of energy from relatively low currents. This capacitor 107 is the power source of the accelerometer, although it could include a rechargeable battery or any other suitable energy storage device.

The charging system includes a first coil or transmitting coil 104 which is supplied from the mains, for example in the control unit 100 about the connection 103 , and a second coil or receiver coil 105 that with the capacitor 107 of the accelerometer 108 by means of the connection 106 connected is. The transmitting coil 104 and the receiver coil 105 are radio frequency coils, for example at 100 kHz or higher, and may be coreless coils.

In the figure, the two coils 104 . 105 mounted so that they are close to each other when the door is in the closed state: the transmitter coil 104 is on the wall or fixed frame of the gate, outside the moving part of the gate 101 arranged, and the receiving coil 105 is on the moving part of the gate 101 , in this case at the end of the lower element 110 arranged.

While the gate is closed, the coil system charges the capacitor 107 which in turn supplies the accelerometer.

This charging system allows the use of cables for connecting the power source 107 of the accelerometer (located on the moving part of the gate) with the supply network or the maintenance necessary to replace batteries.

In an analogous manner and depending on the use which is to be given to the door assembly, the coils could 104 . 105 be arranged so that they face each other and the loading takes place when the door is in its fully open position, for example, if it is provided that the door is open most of the time.

Instead of of the capacitor could rechargeable batteries are used, or even primary batteries, which replaced with a certain regularity Need to become.

If as power source, a capacitor or a rechargeable battery An alternative to charging via induction may be the use of solar modules. For example, this alternative could be special at external gates be suitable, with a solar module on the moving part of the Tores could be mounted, so that connection to the battery is easier.

2 illustrates a functional feature of a door assembly according to some embodiments of the invention: it shows a roller shutter, for example a roller shutter with louvers, which are chained together with a certain play, so that the door has the necessary flexibility to be rolled up; the slats can be in one too stack to maximum contraction or in a state of maximum separation at a small distance from each other.

2 represents the door assembly, if during the closing process an obstacle 203 , in this case a person, gets in the way down the gate. Specifically, it concerns the moment when the security system described above detects the obstacle and reverses the movement of the gate. At the moment of impact the person suffers 203 only the pressure derived from the weight of the fins which are piled up over it (in the figure with the reference number 202 indicated); on the other hand, the other fins ( 201 ), which are in the state of maximum separation, no force down, and the torque of the engine does not transmit on lamellae and does not exert any force on the person 203 out.

The safety system described above recognizes the obstacle 203 practically instantaneous (that is, in a few hundredths of a second), which is why the number of slats 202 Those who succeed in stacking each other before stopping the engine in the state of maximum contraction are always very small, and therefore the gate can apply only a minimum force to the obstacle.

Even though a concrete embodiment of the present invention has been described and illustrated it is obvious that a relevant expert variants and Affix modifications or details by others, technically equivalent without departing from the scope of the appended claims Deviate scope.

To the Example, although a system has been described in which a circuit of the accelerometer even the acceleration converts into a speed and comparing with a range of predetermined speeds, a part of or all of these operations in an analogous way in the Control unit of the door assembly to be executed.

Claims (18)

An assembly of an automatic door with vertical movement, comprising a gate with at least one element with a substantially linear stroke, a motorized device for opening and closing the door, and a control unit which controls the motor device, characterized in that it also has one on one element accelerometer mounted with a substantially linear stroke of the gate and arranged to detect the acceleration of the element, a device for comparing the measured value of the accelerometer with a range of predetermined values and a device for actuating the motor device via the control unit, if the measured value of the accelerometer is not in the range of predetermined values. Door assembly according to claim 1, characterized in that the accelerometer in nearby the lower end of the gate. Door assembly according to a any of the preceding claims, characterized in that the device for comparing the measured value of the accelerometer with a range of given values with the accelerometer connected is. Door assembly according to a any of the preceding claims, characterized in that the device for comparing the measured value of the accelerometer with a range of predetermined values, a device for converting of the reading of the accelerometer in data showing the speed of the gate, and to their comparison with an area includes predetermined speed values. Door assembly according to a any of the preceding claims, characterized that they too Includes calibration means to set the range of predetermined values. Door assembly according to claim 5, characterized in that the calibration means are suitable, the Set range of given values based on measurements, the while at least one closing operation of Tories were taken without obstacles. Door assembly according to a any of the preceding claims, characterized that it comprises radio communication devices, which are connected to the control unit and the accelerometer are. Door assembly according to a any of the claims 1 to 7, characterized in that it is a rollable or foldable High speed door with a flexible tarpaulin that is in its lower Part contains at least one rigid horizontal element, wherein the Accelerometer is connected to this rigid element. Door assembly according to any one of claims 1 to 7, characterized in that it is a high-speed door, which comprises a plurality of rigid horizontal elements, and in that the accelerometer with one of the lower Elements of the gate is connected. Door assembly according to a any of the claims 1 to 7, characterized in that it is a gate of the roller shutter type with a variety of horizontal slats, and in that the accelerometer with one of the bottom slats of the gate connected is. Door assembly according to a any of the preceding claims, characterized that they are a power source for The accelerometer includes, on the moving part of the Tors is mounted. Door assembly according to claim 11, characterized in that it comprises a device for loading the power source over includes electromagnetic induction. Door assembly according to claim 12, characterized in that the device for charging via electromagnetic Induction a fixed first coil outside the moving part of the gate, this first coil supplying power from the grid as well as one mounted on the moving part of the gate and second connected to the power source of the accelerometer Coil, and in that the power source of the accelerometer over the electrical current induced by the first coil into the second coil is charged when these coils are close to each other. Door assembly according to claim 13, characterized in that the first coil and the second coil are mounted so that they are close to each other, when the gate is complete closed is. Door assembly according to claim 13, characterized in that the first coil and the second coil are mounted so that they are close to each other, when the gate is complete open is. Door assembly according to claim 11, characterized in that it comprises a solar module for charging the Power source includes. Door assembly according to claim 16, characterized in that the solar module on the movable Part of the gate is mounted. Door assembly according to a any of the claims 11 to 17, characterized in that the power source of the accelerometer a capacitor, a primary battery or a battery.