WO2006072195A1

WO2006072195A1 - A control system and method used for an elevator for preventing accidental injury

Info

Publication number: WO2006072195A1
Application number: PCT/CN2005/001060
Authority: WO
Inventors: Jinlin Chen
Original assignee: Jinlin Chen
Priority date: 2005-01-07
Filing date: 2005-07-18
Publication date: 2006-07-13
Also published as: CN1644479A; CN100395166C

Abstract

The invention disclosed a control system and a method used for an elevator for preventing accidental injury, wherein the elevator is conversed its status from 'normal operation' state to 'stop' state in the event that the landing error is excess or the car is moving without closing the landing door or that the landing door in multi-storey with no elevator cage is opened, so that the operator in hoistway can operate the elevator only under the inspection mode, and the operator can operate the elevator normally only after the normal/inspection switch is placed in 'normal' position the operator leaves the hoistway, the landing door is closed and the resume operation is done. The system is provided to reduce accidental injury of passenger or operator due to the car moving without closing the landing door or the landing error being excess or other reasons, the system can stop or avoid the unsafety of the elevator.

Description

Control device and method for preventing elevator injury event from occurring

The present invention relates to a control device and a control method for stopping an elevator in a timely manner when the position between the elevator car and the hall door is in an unsafe state.

Background technique

At present, in the process of repairing the elevator, since the personnel are operating in the hoistway or the pit, the elevator is in the "normal operation" rather than the "emergency stop" or "overhaul" state, once the hall door is closed, it is in line with the elevator operation. Under conditions, the car can run at normal operating speed, which may cause damage to personnel located in the hoistway and pit. This kind of injury accident has occurred both inside and outside the shackles. For this reason, elevator installations in some countries and The safe use specification clearly stipulates that an elevator installed in a house that can automatically open a landing door should be equipped with a device that can cut off the control circuit when an outsider enters the hoistway of the elevator, and can only resume the operation of the elevator by the machine room.

Publication No. CN 1286208A (Safety Devices and Methods for Accessing Elevator Shafts, 1999. 8. 30, OTIS Company Application) It solves the problem of personnel operating in the hoistway being protected from the operating car, which is actually passed The setting of the computer program of the elevator control is carried out by using the relationship between the continuous monitoring hall door and the car door. Then this technology has a defect that cannot be ignored: If the operator wants to enter the elevator shaft or the pit, It is necessary to operate the elevator car to the other floor stop layer by the action of the outbound button. When the elevator car reaches the door area and the door is automatically opened, the operator opens the lower floor door. In fact, the program cannot detect this. The situation has arisen, and the proportion of this situation is very large. When the operator enters the pit and closes the hall door, the elevator can run the express train, and the purpose of the technical designer is not achieved at this time. . Although the technology has been put into practical use in elevators, and "providing a sufficiently safe shaft access control in foreign countries, it has been approved as a regulation." However, it is considered necessary to improve and perfect.

On the other hand, as an elevator, the hall door is normally driven by the car door to drive the passengers in and out of the elevator. When the car reaches the corresponding floor to open the door, the level of the floor should be good. For the speed control elevator, the national safety standard is set within ± 15mm, and the two-speed elevator is within ±30 awake. Because the level crossing is an important technical indicator of the elevator, if the elevator has a flat over tolerance of more than 15-30 When it is more than mm, it is necessary to carry out work such as maintenance and adjustment on the elevator in time. Otherwise, it is easy to cause the injury of the occupant. In China, such injury incident has not yet been included in the scope of accident statistics. The damage event of the occupant tripping the occupant, according to statistics, has become the second type of elevator injury event. For some speed control elevators, if the elevator is in the case of abnormality of such leveling, it will be solved by the re-leveling technology, but this re-leveling requires a time process and cannot be timely The elevator is adjusted to a safe range, and it is possible to trip the passengers in and out during this re-leveling process. What is important is that this re-leveling technology is only a kind of compensation measure under such abnormal conditions, and it is not enough to solve the problem that the elevator has already existed between the deceleration and the stop layer. If this problem is not solved, Elevator will frequently appear leveling and re-leveling.

On the other hand, for some reasons, the elevator will operate in the case of opening the door. So far, these two problems have occurred at home and abroad, and it is difficult to prevent it. If it happens, it may threaten people's lives. , it will cause serious accidents. Although the development of modern technology has made the elevator control ability unprecedentedly improved, the situation of the car operation in the case of the door is objective, and the security state of this area needs to be based on the original mode. In the above, redundant technology is adopted, and safety links are added to achieve dual monitoring and control.

Summary of the invention

The object of the present invention is to improve the above-mentioned deficiencies of the prior art, when the elevator car arrives at the leveling level is too large or the elevator does not close the hall door, the car moves upwards or downwards or When the elevator car is manually opened, the elevator is stopped immediately, and the elevator can only be operated according to the maintenance mode. When the elevator hall door and the car are in a safe state and the reset operation is performed in the machine room, the elevator can The normal operation (fast train) mode provides a control device to protect the passenger from the abnormality of the elevator and to prevent the elevator injury event from occurring in the safety of the hoistway and the pit.

Another object of the present invention is to provide a control method for preventing an elevator injury event from occurring.

The technical solution of the present invention is:

A control device for preventing an elevator injury event occurs, wherein a reed switch GB with a wire is installed at a fixed position of each elevator hall door, and a corresponding position is installed on the hall door corresponding to the installed reed pipe The permanent magnet steel is adjusted in position so that when the hall door is normally closed, the attached magnetic steel can act on the installed reed switch to reliably close and close the contact, in the floor of the hall A reed switch GA with a wire attached to one side is also installed, and the wires at both ends of the reed switch GA mounted on the sill of the hall door are connected with the wires at both ends of the reed switch GB installed at the fixed position of the layer. Connected to form a floor and connect the circuit; in the car sill A pair of magnetic steels are installed at a position corresponding to the reed switch GA installed in the hall sill, and the spacing is slightly wider than that of the reed switch GA, so that the reed switch GA can be received when the elevator car reaches the station leveling layer. The magnetic field of the pair of magnetic steels is reliably closed and turned on, and the parallel circuits connected to each other are connected in series through the connecting wires to form a series circuit, and the series circuit is connected to the detecting relay J1 and the power source. Between the detection relay J1 is connected between the control relay coil J2 and the positive pole of the power supply, and the other end of the control relay coil J2 is connected to its own set of normally open contacts J2-1 and the button switch AN. The negative pole connected to the power supply is characterized by controlling the relay coil J2 and another contact group J2- 2 and the elevator's "emergency stop" switch (such as the engine room emergency stop switch Kl, the car top emergency stop switch Κ 2, the car interior emergency The stop switch Κ3, the pit emergency stop switch, etc. are connected in series, and a set of synchronous switches 增 added in the "normal one overhaul" switch of the elevator is connected in parallel with the contact group J2-2.

The above-mentioned switch □ in the other contact group J2-2 of the control relay coil J2 is a synchronous button switch group added in the elevator "check operation" button switch.

The control relay coil J2 has another contact group J2-2 and a parallel switch Κχ or serially connected to the "safe" circuit of the elevator or serially connected to the elevator motor drive running relay coil circuit or serially connected to the elevator control circuit. Also set to detect a control point.

The invention can be implemented by the following methods:

A control method for preventing an elevator injury event from occurring, detecting a relative position of an elevator hall door and a car, characterized in that, in the event that the car to the station level is too large or the elevator does not close the hall door When the car moves in the upward or downward direction or manually opens the elevator hall door on other floors, the elevator is immediately switched from the normal operating state to the "stop" state to realize the elevator stop operation, when the maintenance personnel will lift the elevator" When the normal one overhauls the "switch to the "overhaul" position, the added pair of synchronous switches will be short-circuited with the contact group in series with the elevator "emergency stop" switch. When the operator operates the elevator car in the hoistway, only It is possible to move the car in the maintenance mode when the elevator hall door is closed. Only when the elevator "normal one overhaul" is turned to the "normal" position, the working personnel are away from the shaft or the pit, the elevator hall door After the shutdown, and after the reset operation to the equipment room, the elevator can operate in normal operation mode.

The invention has the advantages that the control device solves the problem that the elevator passengers and the elevator maintenance personnel are injured by the door opening, the leveling and the other reasons, so that the elevator stops immediately when the unsafe state occurs. OK, waiting for elevator maintenance personnel to confirm the safety status of the elevator, suitable for any elevator application with car and hall door.

DRAWINGS

Figure 1 is a diagram showing the detection device of whether the position between the elevator car and the hall door is in a normal state: Figure 2 is a schematic diagram of the original "emergency stop" switch of the elevator control system;

Figure 3 is a schematic diagram of the control portion indicated in the present invention;

Figure 4 is a wiring diagram of the control relay contact group in series with the elevator "emergency stop" switch in the present invention. In the figure: GA is a reed switch installed on the side of the hall door; GB is a reed switch installed on the side of the fixed position of the landing door; n, n-1, n- 2... behind GA, GB... Number of floors in the elevator hall; N, S are permanent magnet steel poles; J1 is the detection relay coil: J2 is the control relay coil: J1-1 is a pair of normally open contacts in the detection relay J1; J2-1 is the control relay J2 One of the normally open contacts; AN is the normally open push button switch for reset; A and B are the contacts of the detecting device; V+ is the positive pole of the power supply; GND is the negative pole of the power supply: J2-2 is the other pair of the control relay J2 Contact group; Kx is a set of synchronous switches added to the "normal one overhaul" switch of the elevator; K1 is the emergency stop switch of the engine room, Κ2 is the emergency stop switch at the top of the car, and Κ3 is the emergency stop of the car.

detailed description

The invention will now be further described with reference to the accompanying drawings and embodiments.

As shown in Figure 1-4, a connected reed pipe (GBn, GBn-1...) is installed at a fixed position on each floor of the elevator door, at the corresponding position of the installed reed pipe, on each floor. The permanent magnet steel induced by the reed switch is installed on the door of the hall to adjust its position so that when the hall door is normally closed, the attached magnet can act on the reed switch installed to reliably close the contact. Turn on. Install a wire reed switch (GAn, GAn-1...) on the side of the floor door of the hall door, and fix the wire at both ends of the reed pipe installed on the hall door sill and install it on the floor. The position of the reed pipe at both ends of the wire is connected in parallel, and the position of the reed switch installed in the hall door sill is installed in the car sill to install a pair of permanent magnets for the sensing application, the spacing is slightly wider than the reed switch , so that the reed switch can be reliably closed and turned on by the magnetic field of the pair of permanent magnet steel when the elevator car arrives at the leveling level. Connect the two ends of the two reed pipes that have been connected to each other through the wires and all the floors on the upper and lower floors. The reed switches are connected in the same way as above, and then connected together to form a passage through A and B. The point is connected to the control circuit, so that if each floor door is closed in place, several of the reed switches (GBn, GBn-1, ...) are closed by the magnetic steel attached to the respective floor hall door, and are in a path state. , if the car When the car arrives on any floor to open the door (if it reaches the n-3 floor), although the position of the magnetic steel on the hall door moves with it, the installed reed switch (GBn-3) does not have a magnetic field, the contact When the circuit is open, the current can still be turned on by the reed switch (GAn-3) installed on the sill of the hall door due to the action of a pair of magnetic steel attached to the car sill, thus forming a loop, so that the hall door is closed. Still open, as long as the relative position of the car and the hall door is in the normal (safe) position, the gap between A and B is always in the closed state. When the following conditions occur, the two points A and B are the road: 1 elevator hall When the door is not closed, the car moves (opening the door), and the magnet attached to the car is removed together. 2 After the elevator stops at the station, the car level is too large, and the door is on the door. When the magnetic steel is removed together with the hall door, the reed switch cannot receive the corresponding sensing signal, so that A and B are in an open state.

The two points of the detection circuits A and B shown in Fig. 1 are always a closed circuit when the elevator is in normal operation. The battery voltage for the emergency lighting supply of the elevator is connected to the circuit of Fig. 3, and the detection relay J1 connected in series is in In the working state of the suction, the contact Jl-1 is sucked. When the normally open button switch AN is pressed, the working voltage is obtained at both ends of the control relay J2 coil, the contact is sucked, and the contact J2 in parallel with the push button switch AN is connected. -1 is the self-locking contact group of control relay J2, the voltage is obtained in the control relay J2 coil, the self-locking and self-protection process is completed after the contact is sucked, and another set of contacts J2- 2 of the control relay J2 and the elevator are The "emergency stop" switches are connected in series, and a set of synchronous switches Kx and J2 - 2 contacts added in the "normal one-time repair" switch of the elevator are connected in parallel, as shown in Fig. 4.

Once the detection circuit detects that the elevator landing door and the car position are not in a safe state, the Α and Β open circuit, the detection relay J1 has no voltage, the contact Jl-1 is open, the control relay coil J2 loses the working voltage, the armature is released, and The circuit of the elevator "emergency stop" switch (such as Kl, Κ2, Κ3, etc.) is in an open state, so that the elevator is in a stop state. When the maintenance personnel put the "normal one run" switch to the "overhaul" position, the increase is increased. A pair of synchronous switch Kx will short-circuit the contact J2-2 in series with the elevator "emergency stop" switch, so that the operator can only move the car in the hoistway according to the maintenance mode, only when the elevator is "normal one" Overhaul the "switch to the "running" position, the operator leaves the pit sump, the elevator hall door is closed, and after the reset operation in the machine room, the elevator can operate in the "normal operation" mode to eliminate the car to enter the hoistway bottom Pit workers have the purpose of harm.

The specific operation steps of the control method for preventing the occurrence of an elevator injury event in this embodiment may be: a. A set of parallel detecting devices are arranged on the hall door and the ground sill of each floor elevator, correspondingly in the hall door and the car Inductive mounting corresponding to the detecting device is respectively disposed at the position, and the parallel detection of each layer is performed After the device is connected in series, it is connected between the detecting relay J1 and the power source, and a set of contacts in the detecting relay J1 is connected between the control relay coil J2 and the positive pole of the power supply, and the other end of the control relay coil J2 is connected to its own set. The normally open contact J2- 1 and the button switch AN- are connected to the negative pole of the power supply, and the other contact group J2 of the control relay coil J2 is connected in series with the "emergency stop" of the elevator. A maintenance switch "additional switch Kx connected in parallel with the contact group J2- 2 is added to the switch circuit;

b. The relative position of the elevator hall door and the car is detected by the above detecting device and the sensing device. c. When the car is too wide or the elevator is not closed, the elevator is not closed. When the car moves upwards or downwards or manually opens the elevator doors of other floors, the above-mentioned detecting device sends a signal to immediately change the elevator from the normal operating state to the "stop" state to realize the elevator stop operation, to be repaired. After the personnel overhaul and go to the machine room and press the reset operation button, the operation can be started normally;

d. When the maintenance personnel dials the "normal one overhaul" switch of the elevator to the "overhaul" position, the synchronous switch Kx in parallel with the set of contact groups J2- 2 of the control relay coil J2 will be connected with the "emergency stop" switch of the elevator. The series contact group J2-2 is short-circuited. When the operator operates the elevator car in the hoistway, the car can only be moved in the maintenance mode when the elevator hall door is closed. Only when the elevator is "normal" When the maintenance switch is turned to the "normal" position, the operator leaves the hoistway or the pit, the elevator hall door is closed, and after the reset operation to the machine room, the elevator can operate in the normal operation mode.

The detecting device is composed of a reed switch and corresponding connecting wires, and the reed pipes are respectively disposed at corresponding positions of the elevator hall door and the hall door sill, and the reed switches are arranged on the elevator hall door and the hall door sill of each floor. Then, the wires are connected in parallel to form a parallel circuit, and the parallel circuits of each floor are connected in series to form a series circuit, and then the series circuit is connected to the detection relay J1 and the control relay coil J2 according to the above method.

The sensing device is magnetic steel, and the spacing of the magnetic steel installed at the corresponding position of the car sill is slightly wider than the reed switch provided on the sill of the hall door.

Claims

Rights request

1. A control device for preventing an elevator injury event from occurring. A reed pipe GB with a wire is installed at a fixed position of each elevator hall door, and is installed at a position corresponding to the installed reed pipe on the hall door. There is a corresponding permanent magnet steel, and a reed pipe GA connected with a wire is also installed at a side of the floor of the hall door, and the wire at both ends of the reed pipe GA installed on the hall door sill is installed The two ends of the reed switch GB at the fixed position of the layer are connected to form a floor and connected to the circuit; in the car sill, a pair of magnetic steel is installed at a position corresponding to the reed switch GA installed in the hall sill. The spacing is slightly wider than that of the reed switch GA, and the parallel connection of the layers is connected to form a series circuit, and the series circuit is connected between the detection relay J1 and the power source, and one of the relays J1 is detected. The group contact is connected between the control relay coil J2 and the positive pole of the power supply, and the other end of the control relay coil J2 is connected to its own set of normally open contacts J2-1 and is connected to the negative pole of the power supply with the push button switch AN. Characteristic is to control relay coil J2 another contact group J2- 2 is connected in series with the "Emergency Stop" switch of the elevator, and a set of synchronous switch Kx added in the "normal one-over" switch of the elevator is connected in parallel with the contact group J2-2.

2. The control device for preventing the occurrence of an elevator injury event according to claim 1, wherein the switch Kx connected in parallel to the other contact group J2 of the control relay coil J2 is added in the elevator "overhaul operation" button switch. A sync button switch group.

3. The control device for preventing the occurrence of an elevator injury event according to claim 1, wherein the control relay coil J2 has another contact group J2-2 and a parallel switch Kx or a "safe" circuit or string connected in series to the elevator. An additional detection detection point is connected to the elevator motor drive running relay coil circuit or serially connected to the elevator control circuit.

4. A control method for preventing an elevator injury event from occurring, detecting a relative position of an elevator hall door and a car, characterized in that once the car arrives at the station level, the over-range is too large or the elevator does not close the hall door. In the case where the car moves upwards or downwards or manually opens the elevator doors of other floors, the elevator is immediately switched from the normal operating state to the "stop" state to stop the elevator, when the maintenance personnel will lift the elevator When the "normal one overhaul" is turned to the "overhaul" position, the added synchronous switch will be short-circuited with the contact group in series with the elevator "emergency stop" switch, and the operator operates the elevator car in the hoistway. At the time of the elevator hall door, the car can only be moved in the maintenance mode when the elevator hall door is closed. Only when the elevator "normal one overhaul" switch is turned to the "normal" position, the working personnel leaves the hoistway or the pit, the elevator hall After the door is closed and the reset operation is performed in the machine room, the elevator can operate in normal operation.