JP5875594B2 - Elevator with operation switching system - Google Patents

Description

  The present invention relates to an elevator that performs inspection by switching from normal operation to inspection operation, and is particularly suitable for improving the safety of an operator during inspection and then safety during normal operation.

  Conventionally, there is no mention of safety when switching the maintenance changeover switch to the maintenance operation side and the normal operation side, and the operator operates the maintenance changeover switch installed on the car, for example. Thus, the maintenance operation is made effective, the maintenance operation is continued until the car floor coincides with the floor, and the normal operation is restored by returning the maintenance switch to the normal operation side.

  In addition, as the door installed in the elevator, when the inspection port leading to the elevator landing door, car door, car canopy or work platform in the hoistway is opened (opened), maintenance (inspection) operation is performed. Yes. Safety of maintenance work, for example, when the maintenance switch is accidentally switched to the normal operation side during maintenance work, especially when the maintenance switch is accidentally switched to the normal operation side outside the door zone However, in order to ensure the safety of the worker, even when the maintenance switch is switched to the normal operation side, the maintenance operation is continued until the car floor matches the floor, that is, the low speed operation is continued. Is known, and is described, for example, in Patent Document 1.

JP-A-4-323181

  In the above prior art, the operation is not invalidated when the operation is switched to the maintenance (inspection) operation, and it is difficult to say that the safety is very high. After the low speed operation is continued, the inspection is performed until the normal operation is started. May not be complete.

  In addition, if an inspection port leading to the elevator landing door, car door, car canopy or work platform in the hoistway is opened, it is necessary to immediately check it, and it is desirable to return to normal operation after checking it securely. .

  An object of the present invention is to solve the above-mentioned problems of the prior art and to improve the safety of workers when performing inspections, and then to the safety of passengers during normal operations, and in particular, elevator landing doors, When the inspection port leading to the car door, the car canopy, or the work platform in the hoistway is opened, a higher level of safety is ensured against power outages during inspection operation, such as a series of operations and operations until returning to normal operation. There is to do.

In order to achieve the above object, according to the present invention, in an elevator with an operation switching system that is switched from normal operation to inspection operation, a switch SW that switches between normal operation and inspection operation, and an inspection side and a normal side are switched. And an inspection operation device that raises or lowers the car as the inspection operation when the inspection operation SW is operated to the inspection side. When the switching SW is switched to the inspection operation, the normal operation is performed. is invalidated, the switch SW is switched to the inspection operation, and, when the inspection operation SW in the inspection operation device is operated to inspect the side, it inspected operation in the inspection operation device, wherein the inspection operation SW is switched Is something that can be done .

  According to the present invention, when the switch SW is switched to the inspection operation, the normal operation is invalidated, so that the safety of the worker when performing the inspection and then the safety for the passenger when performing the normal operation is improved. Can do.

The circuit block diagram of the elevator maintenance apparatus by one embodiment of this invention. A side section showing arrangement in a hoistway by one embodiment. The front view which shows the example of installation of switching SW seen from the elevator hall by one embodiment. The check operation flowchart by one embodiment. The flowchart of the check operation at the time of the power failure generation by one embodiment.

  Hereinafter, an embodiment will be described with reference to the drawings. Fig. 1 is a circuit configuration diagram of an elevator maintenance device, Fig. 2 is an example of an arrangement diagram of the switching SW and each inspection operation device, Fig. 3 is an example of an installation diagram of the switching SW, Fig. 4 is an inspection operation flowchart, and Fig. 5 is a power failure occurrence time. It is a check operation flowchart.

  In FIG. 1, the circuit of the maintenance device has a switch SW2 connected in series to a contact point of an electrical safety device 1 such as a speed governor. When the switch SW2 is operated to the normal side, the car door contact CD3 (the car door is open and OFF: open), the landing door contact HD4 (the landing door is open and OFF: open), the door zone contacts DZA5, DZB6, DZC7 (from each door zone) Disconnected OFF: open circuit) is connected to a door-open running detection circuit 8 configured as shown. When operated to the inspection side, it is connected to the door-opening travel detection circuit 8 via the on-car inspection operation SW contact 9 or the pit inspection operation SW contact 10.

  A car inspection and operation device 11 and a pit inspection and operation device 17 are connected in series to the subsequent stage of the door opening travel detection circuit 8.

  In addition, it is desirable for the door-open running detection circuit 8 to detect that the inspection port leading to the elevator landing door, the car door, the car canopy, or the work table in the hoistway is opened (opened).

  When each inspection operation device is operated to the inspection side by the inspection operation SW 12 outside each door zone, the switching SW contact 16, the RUN button 13 and the UP button are turned on (closed) in conjunction with the switching SW 2 being on the inspection side. 14 or DN button 15 is connected in series. When the inspection operation SW 12 is operated to the normal side, the switching SW contact 16 of the switching SW 2, the RUN button 13, the UP button 14, or the DN button are bypassed. When these circuits are de-energized, they are connected to an electromagnetic contactor S18 that shuts off the electric power of the electric motor and brake (operated when the power is cut off).

  FIG. 2 is an example of an arrangement diagram of the switching SW and each inspection operation device. Among the circuits shown in FIG. 1, the switching SW 2 is installed in the box 201 installed on the landing, and the on-car inspection operation device 11 is the car. The upper 202 and the pit inspection operation device 17 are installed in the pit 203. Circuits other than this in FIG. 1, such as the door-open travel detection circuit 8, are installed in the elevator control panel 206.

  The box 201 installed at the landing in FIG. 2 is installed on the back side from which the landing button box 301 is removed as shown in FIG. The structure is designed so that only engineers can operate. In addition, it is desirable to provide a function for preventing erroneous operation of passengers. Thereby, the switching from the normal operation to the inspection operation is clearly indicated, and the safety when performing the normal operation after the inspection can be improved.

  The operation procedure of the present embodiment will be described with reference to the circuit configuration diagram of the elevator maintenance device in FIG. 1, the check operation flowchart in FIG. 4, and the check operation flowchart in the event of a power failure in FIG.

In step 101, it is checked whether the landing door or the car door is open by the door opening detection circuit 8 of the elevator maintenance device circuit. Each household is not open, switch SW2 is not operated to inspect side S 111, and if the inspection operation SW12 has not been operated in inspection side in S116, the coil of the electromagnetic contactor S18 in S 112 is energized is the power of the electric motor and the brake is possible normal operation in S 113 is energized.

If any of the door at S 101 is open, the car at S 102 it is checked whether the door zone. Car is within the door zone, switching SW2 at S 111 be open one of the doors is not operated to inspection side, and, if the inspection operation SW12 has not been operated in inspection side in S116, S 112 in coil of the electromagnetic contactor S18, the normal operation in S 113 is excited is allowed.

On the other hand, if the car is not in the door zone, it is checked again in S 103 whether the landing door or the car door is open. If the it is confirmed that the closed, switch SW2 is not operated to inspect side S 111, and if the inspection operation SW12 has not been operated in inspection side in S116, the coil of the electromagnetic contactor S18 in S 112 Is excited and normal operation is allowed in step 113.

Also, if left either door is opened, squirrel is determined that either door to lie outside the door zone is open, is the coil degaussing of the electromagnetic contactor S18 elevator at step 107 Stopped.

When it is confirmed that the landing door or the car door is closed, when the switch SW2 is operated to the inspection side, the inspection operation SW12 is the normal side, the on-car inspection operation SW contact 9 and the pit inspection operation SW contact 10 Becomes OFF (open circuit) in conjunction with the fact that the inspection operation SW12 is on the normal side, and the normal operation becomes invalid (a state that is not allowed). When the inspection operation SW 12 is on the inspection side, the on-car inspection operation SW contact 9 and the pit inspection operation SW contact 10 are turned on (closed).

In S 105, for example, it is checked whether the inspection operation SW 12 of the inspection operation devices 11 and 17 installed on the car or in the pit is operated on the inspection side. If the inspection side not being operated, is demagnetized coil of the electromagnetic contactor S18 in S 107 elevator leading to the bench in a stopped state (landing doors of the elevator, car door, or car canopy or hoistway If any of the inspection ports are opened, normal operation is invalidated).

When operating in the inspection side, since the switching SW contacts 16 of FIG. 1 is ON (closed) in conjunction with become inspection side of the switch SW2, the inspection operation is enabled, in S 106 RUN13 and UP14 or by pressing a button DN15, it is possible to perform the inspection operation coil of the electromagnetic contactor S18 in S 109 is energized.

As described above, when the operator performs the inspection work, if the landing door or the car door is opened while the car is outside the door zone, the coil of the magnetic contactor S18 is demagnetized and the elevator is safely stopped (normal operation is invalidated). ). After that, it is checked again whether the landing door or the car door is open, and if it is confirmed that it is closed , the operator switches the switch SW2 to the inspection side at the landing so that only the inspection operation of the elevator becomes effective. Check operation device installed on the top or pit, inspection operation device 11 on the car, inspection operation SW 12 of the pit inspection operation device 17 is operated to the inspection side, and the check operation is performed by pressing the RUN 13 and UP 14 or DN 15 buttons. It can be carried out.

  Further, when the landing door or the car door is opened again outside each door zone during this inspection operation, the elevator maintenance device circuit of FIG. 1 is shut off by the door open travel detection circuit 8, and the coil of the magnetic contactor S18 is demagnetized. The elevator is safely stopped.

  When the operator completes the inspection work, the inspection operation device installed on the car or in the pit, the inspection operation device 11 on the car, and the inspection operation SW 12 of the pit inspection operation device 17 are operated to the normal side, and then on the landing. In this case, the switch SW2 of step 111 is still operated on the inspection side, so that the elevator is safely de-energized and the elevator is safely stopped. The coil of the magnetic contactor S18 is excited in step 112 only when the operator operates the switch SW2 installed at the landing to the normal side (switching system is reset) for the first time. In 113, normal operation is allowed. That is, the inspection operation can be performed only when the switching system is activated and the movable stop device is in the operating position (when the switching SW2 is on the inspection side).

  Therefore, the inspection operation SW is returned to the normal side, the inspection halls leading to the elevator landing doors, the car doors, the car canopy or the work platform in the hoistway are all closed, and the switch SW2 is switched to the normal operation. Normal operation is possible only when satisfied. Thereby, when the inspection port leading to the elevator landing door, the car door, the car canopy, or the work platform in the hoistway is opened, the inspection is surely performed and then the normal operation is resumed.

  Next, the operation procedure when a power failure occurs while the operator is performing the inspection operation will be described using the inspection operation flowchart when the power failure occurs in FIG.

  If a power failure occurs while the operator is performing the inspection operation, the elevator is stopped. However, when power is restored, the switch SW2 is operated to the inspection side in step 201 in the elevator maintenance device circuit of FIG. Is checked. Since the worker is working on the car or in the pit, the switch SW2 is normally operated on the inspection side.

  In other words, if the inspection operation is enabled and a power failure occurs, it will automatically be reset to normal operation even if the elevator landing door, car door, or car canopy, or the inspection port leading to the work platform in the hoistway are all closed. Safety is improved without doing.

  In step 202, it is checked whether the inspection operation SW 12 of the inspection operation devices 11 and 17 installed on the car or the pit is operated on the inspection side. If the operation is not operated on the inspection side, the inspection operation SW contact 9 on the car is detected. Since the pit inspection operation SW contact 10 is OFF in conjunction with the inspection operation SW12, the maintenance device circuit is cut off, and the coil of the magnetic contactor S18 is demagnetized in step 206 and the elevator is safely stopped. Become.

  On the other hand, when the inspection operation SW 12 of the inspection operation devices 11 and 17 installed on the car or in the pit is operated to the inspection side in Step 202, the RUN 13 and UP14 or DN15 buttons are pressed in Step S203 as before the power failure. By pressing, the coil of the magnetic contactor S18 is excited in step 204, and the inspection operation becomes effective in step 205.

  When the switch SW2 is operated to the normal side in step 201, the contact 16 (switch SW contact) of the switch SW2 is open, so in step 208, the coil of the electromagnetic contactor S18 is demagnetized and the elevator is safe. Stopped.

  Even if the operator has a power failure during the inspection operation and returns to power, the switch SW2 installed at the landing is operated to the inspection side, so that it does not inadvertently return to the normal operation. In addition, since the inspection operation SW 12 of the inspection operation devices 11 and 17 is operated to the normal side and then the landing SW is operated to the normal side after switching to the landing, the normal operation is restored for the first time. .

1 Electric safety device of elevator 2 Switch SW
3 Car door contact 4 Landing door contact 5 Door zone contact A
6 Door zone contact B
7 Door zone contact C
8 Door open travel detection circuit 9 Inspection operation SW contact (on the car)
10 Inspection operation SW contact (pit)
11 Inspection operation device on car 12 Inspection operation SW
13 RUN button 14 UP button 15 DN button 16 Switching SW contact 17 Pit inspection operation device 18 Electromagnetic contactor

Claims (6)

In an elevator with an operation switching system that switches from normal operation to inspection operation,
It is installed in the hall, and the switch SW Ru switching the inspection operation and the normal operation,
An inspection operation SW for switching between the inspection side and the normal side is provided, and when the inspection operation SW is operated to the inspection side, an inspection operation device that raises or lowers the car as an inspection operation, and
If the switching SW is switched to the inspection operation, typically invalidates the operation, the switching SW is switched to the inspection operation, and, if the previous SL inspection operation SW is operated to the inspection side, and enable the Inspect operation An elevator with an operation switching system.   The operation according to claim 1, wherein the normal operation is invalidated when the elevator landing door, the car door, the car canopy, or the inspection port leading to the work platform in the hoistway is opened. Elevator with switching system.   In the thing of Claim 1, even when the inspection opening which leads to the platform in an elevator, the car door, or a car canopy, or the work platform in a hoistway is closed when the said switch SW is switched to inspection driving | operation. An elevator with an operation switching system characterized in that normal operation is disabled.   2. The inspection operation SW according to claim 1, wherein the inspection operation SW is returned to the normal side, all inspection openings leading to the elevator landing door, the car door, the car canopy or the work platform in the hoistway are closed, and the switching SW The elevator with the operation switching system is characterized in that the normal operation is made effective when is switched to the normal operation.   When the inspection operation is valid and a power failure occurs, the elevator landing door, the car door, the car canopy, or the inspection port leading to the work platform in the hoistway is all closed. An elevator with an operation switching system characterized by not returning to normal operation. In claim 1,
An inspection operation SW contact that closes when the inspection operation SW is on the inspection side and opens when the inspection operation SW is on the normal side;
When the switching SW is switched to normal operation, it is connected in series, and when the switching SW is switched to inspection operation, it is connected in series via the inspection operation SW contact, and a car door or a landing door is opened outside each door zone. A door-open running detection circuit to open the circuit,
The inspection operation device connected in series to the subsequent stage of the door-open running detection circuit;
An electromagnetic contactor that is connected in series to the subsequent stage of the inspection operation device and is de-energized and de-energized so that the elevator is in a stopped state,
A switching SW contact that is connected in series with the inspection operation SW and that closes in conjunction with the switching SW becoming the inspection side;
When operated to the normal side, the inspection operation SW bypassing the switching SW contact and the RUN button and the UP button or DN button provided in the inspection operation device;
An elevator with an operation switching system characterized by comprising:

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