JP2005179015A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device with a mechanism for basically restricting the movement of a cage to increase safety during inspection work and an interlock mechanism for preventing the function invalidating operation of the mechanism in error. <P>SOLUTION: The elevator device comprises a stopper pin 10 inserted into a counter weight 6 tied to the cage 4 with a rope 5 and into a counter weight guide rail 7 for mechanically fixing the movement of the cage 4, an inspection work bench 3 stored during normal operation but to be assembled in an elevation region of the cage 4 during inspection work, an electric lock 13 for locking the inspection work bench 3 to a storage position when the stopper pin 10 is not inserted into the counter weight 6 and the guide rail 7, and an electric lock 16 for locking the stopper pin 10 to the counter weight 6 and the guide rail 7 when the inspection work bench 3 is not stored. Without mechanical fixation of the counter weight 6, inspection cannot be performed and the mechanical fixation cannot be invalidated during inspection, thus providing safe operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator apparatus, and more particularly to an apparatus for ensuring the safety of an operator when performing an inspection work in an elevator hoistway.

  In an elevator without a machine room, the control panel cannot be installed in the machine room, so it is installed in the hoistway. When inspecting equipment that is out of reach from the pit in the elevator hoistway, an inspection workbench is necessary to secure a foothold for the inspection worker.

  However, the hoistway is a space where the car goes up and down, and if the inspection work table is fixedly installed, it collides with the car and damages the equipment. In view of this, the inspection work table is not a fixed type but a folding type, and is folded and stored during elevator operation, and is assembled and installed only during inspection work.

  With such a configuration, if the elevator travels in a state where the inspection work table is assembled and installed, the car and the inspection work table collide with each other, and the equipment is also damaged. Further, if the inspection is being performed on the inspection workbench, it may lead to injury of the operator.

  In order to prevent such equipment damage and worker injury, the elevator must be stopped when the inspection workbench is installed, and means for detecting the installation or storage state of the inspection workbench And the elevator is stopped or switched to operation according to the detection result (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2001-199647 (pages 2 to 3 and FIGS. 1 to 3)

  The method only electrically restricted the movement of the car during inspection work. Therefore, when some noise enters or when a third party who does not know that the inspection is being performed forcibly turns on the power, there is a possibility that the elevator cannot be kept stopped.

  The objective of this invention is providing the elevator apparatus provided with the mechanism which restrict | limits a movement of a car fundamentally, in order to increase the safety | security at the time of an inspection work.

  Another object of the present invention is to provide an elevator apparatus having an interlock function that prevents an operation that erroneously invalidates the function of the mechanism.

  In order to achieve the above object, the present invention provides an elevator apparatus having a stopper pin that is inserted into a counterweight connected to a car by a rope and a guide rail for the counterweight and mechanically fixes the movement of the car. suggest.

  A switch for stopping the operation of the car can be provided when the stopper pin is inserted into the counterweight and the counterweight guide rail.

  Further, an inspection work table that is stored during normal operation and assembled in the elevator lift area during inspection work, and a switch that stops the operation of the car when the inspection work table is not stored may be provided.

  In the present invention, a device that mechanically restricts the movement of the car when inserted into the counterweight connected to the car with a rope and the guide rail for the counterweight is provided. Even when a third party who does not know that the inspection work is in progress, the elevator apparatus can be kept stopped even when the power is forcibly turned on.

  In order to achieve the above other objects, the present invention provides a counterweight connected to the car by a rope and a stopper pin that is inserted into a counterweight guide rail to mechanically fix the movement of the car, and during normal operation. Is equipped with an inspection workbench that can be stored and assembled in the lift area of the car during inspection work, and an electric lock that locks the inspection workbench in the stowed position when the stopper pin is not inserted into the counterweight and the counterweight guide rail. An elevator system is proposed.

  The present invention also includes a counterweight connected to the car by a rope and a stopper pin that is inserted into a counterweight guide rail to mechanically fix the movement of the car, and is stored during normal operation and the car during inspection work. There is proposed an elevator apparatus comprising an inspection workbench assembled in a lifting / lowering area and an electric lock for locking a stopper pin to a counterweight and a counterweight guide rail when the inspection workbench is not stored.

  The present invention further includes a counterweight connected to the car by a rope and a stopper pin that is inserted into the counterweight guide rail and mechanically fixes the movement of the car, and is stored during normal operation and the car during inspection work. An electric work lock that locks the inspection work table in the stowed position when not inserting the stopper pin into the inspection work table assembled in the lifting area, counterweight and counterweight guide rail, and a stopper when the inspection work table is not stored An elevator apparatus including an electric lock for locking a pin to a counterweight and a counterweight guide rail is proposed.

  In any elevator apparatus, a switch for stopping the operation of the car can be provided when the stopper pin is inserted into the counterweight and the counterweight guide rail.

  Moreover, you may provide the switch which stops the driving | operation of a cage | basket | car when the inspection work table is not accommodated.

  When the stopper weight is not inserted into the counterweight and the counterweight guide rail, an electric lock is provided to lock the inspection work table to the stowed position, so if the stopper pin is not inserted into the counterweight and guide rail, the inspection work table Can not be assembled.

  On the other hand, since the electric lock for locking the stopper pin to the counterweight and the counterweight guide rail is provided when the inspection work table is not stored, the stopper pin cannot be removed unless the inspection work table is stored.

  As a result, there is no risk of invalidating the function of the mechanism by mistake.

  According to the present invention, the movement of the car can be mechanically limited during the control panel inspection work.

  The inspection work table cannot be assembled unless the stopper pin is inserted into the counterweight and its guide rail. That is, it is safe because inspection work cannot be performed without mechanically restricting the movement of the car.

  When the inspection work table is assembled and the inspection work is being performed, the stopper pin is fixed, so that it does not fall off, and even if it is accidentally pulled out, it is safe to remove.

  Furthermore, since the stopper pin cannot be removed while the inspection work table is assembled, an effect of preventing the inspection work table from being forgotten to be stored can be obtained.

  Next, an embodiment of an elevator apparatus according to the present invention will be described with reference to FIGS. 1 and 2.

  FIG. 1 is a side view showing a configuration of an embodiment of an elevator apparatus according to the present invention.

  In the elevator without a machine room in FIG. 1, a control panel 2 and an inspection work table 3 are installed in an elevator hoistway 1. A car 4 is suspended at one end of the main rope 5 hung on the sheave 8 and the pulley 9, and a counterweight 6 guided by a counterweight guide rail 7 is suspended at the other end.

  The counterweight 6 and the counterweight guide rail 7 are provided with holes for inserting stopper pins 10 for fixing the car 4.

  When the stopper pin 10 starts to be inserted into the counterweight 6 and the counterweight guide rail 7, the switch 11 that is turned off, and the counterweight 6 and the counterweight guide rail 7 are provided with the stopper pin 10 in the operation region of the stopper pin 10. And a switch 12 which is turned on when fully inserted.

  On the other hand, in the operation area of the inspection worktable 3, an electric lock 13 that unlocks the inspection worktable 3 when the contact of the switch 12 is turned on, and a switch 14 that is turned on when the inspection worktable 3 is stored. A switch 15 that is turned off when the inspection work table 3 is stored is disposed. An electric lock 16 that locks the stopper pin 10 so that the stopper pin 10 cannot be removed when the contact of the switch 15 is ON is disposed in the operation region of the stopper pin 10.

  The position 4a when the car is at the lowest floor indicates that if the car 4 is moved up and down without storing the work table 3, the work table 3 and the car 4 interfere with each other. .

  FIG. 2 is a circuit diagram showing an example of the configuration of the electric circuit of the embodiment of the elevator apparatus according to the present invention.

  In FIG. 2, when the switch 11 is in the ON state and the switch 14 is turned on, the relay 17 for switching the operation / stop of the elevator is excited, and the elevator can run. When the state of the switches 11 and 14 is other than that, the relay 17 is demagnetized and the elevator is stopped.

  When the switch 12 is turned on, the electric lock 13 is excited and unlocked, so that the inspection work table 3 can be taken out.

  When the contact of the switch 15 is in the ON state, the electric lock 16 is excited and locks the stopper pin 10 so as not to come off.

  The operator stops the car 4 on the top floor in order to check the control panel 2. Thereafter, the stopper pin 10 is inserted into the hole of the counterweight 6 and the hole of the counterweight guide rail 7 into the pit of the hoistway 1.

  At this time, the switch 11 is turned OFF at the beginning of insertion, the relay 17 is demagnetized, and the elevator is electrically stopped. As a result, first, the movement of the car 4 can be electrically restricted.

  When the stopper pin 10 is completely inserted into the hole of the counterweight 6 and the hole of the counterweight guide rail 7, the movement of the car 4 can be mechanically limited.

  Further, when fully inserted, the contact of the switch 12 is turned ON, and the electric lock 13 is excited and unlocked, so that the inspection work table 3 can be taken out.

  When the operator assembles the inspection work table 3, the inspection work table 3 is separated from the switch 14, so that the contact of the switch 14 is turned off, and the relay 17 is cut off twice by the switch 11 and the switch 14. Safety is even more certain.

  When the inspection work table 3 is assembled, the inspection work table 3 is separated from the switch 15, so that the electric lock 16 is excited and locked while the contact of the switch 15 is ON, and the stopper pin 10 cannot be removed.

  In this state, the operator can get on the assembled inspection work table 3 and inspect the control panel with peace of mind.

  After the inspection, when the operator stores the inspection work table 3, the contact of the switch 14 is turned on, and the relay 17 is cut off only by the switch 11.

  Further, when the inspection work table 3 is stored, the contact of the switch 15 is turned off, the electric lock 16 is demagnetized and unlocked, and the stopper pin 10 is pulled out.

  When the operator begins to pull out the stopper pin 10, the contact of the switch 12 is turned off, the electric lock 13 is demagnetized and locked, and the inspection work table 3 cannot be taken out.

  When fully disconnected, the contact of the switch 11 is turned on, the relay 17 is excited, and the elevator can be operated.

  According to this embodiment, it is possible to mechanically limit the movement of the car as well as electrical during the control panel inspection work.

  In addition, since the inspection work table 3 cannot be assembled unless the stopper pin 10 is inserted into the counterweight 6 and the counterweight guide rail 7, the inspection work cannot be performed without restricting the movement of the mechanical car. It is safe.

  On the other hand, when the inspection work table 3 is assembled and inspected, since the stopper pin 10 is fixed, the stopper pin 10 does not fall off, and if the stopper pin 10 is accidentally removed, it can be removed. It's safe because you can't.

  Further, since the stopper pin 10 cannot be pulled out with the inspection work table 3 assembled, it is possible to prevent the inspection work table 3 from being forgotten to be stored.

It is a side view which shows the structure of embodiment of the elevator apparatus by this invention. It is a circuit diagram which shows an example of a structure of the electric circuit of embodiment of the elevator apparatus by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator hoistway 2 Control panel 3 Inspection work table 4 Car 5 Main rope 6 Counterweight 7 Counterweight guide rail 8 Sheave 9 Pulley 10 Stopper pin 11 Switch 12 Switch 13 Electric lock 14 Switch 15 Switch 16 Electric lock 17 Relay

Claims (8)

An elevator apparatus comprising a counterweight connected to a car by a rope and a stopper pin inserted into a counterweight guide rail to mechanically fix the movement of the car. The elevator apparatus according to claim 1,
An elevator apparatus comprising: a switch for stopping the operation of the car when the stopper pin is inserted into the counterweight and the counterweight guide rail. The elevator apparatus according to claim 1 or 2,
An inspection workbench that is stored during normal operation and assembled in the lifting area of the car during inspection work;
An elevator apparatus comprising: a switch for stopping the operation of the car when the inspection work table is not stored. A stopper pin that is inserted into a counterweight connected to the car with a rope and a guide rail for the counterweight, and mechanically fixes the movement of the car,
An inspection workbench that is stored during normal operation and assembled in the lifting area of the car during inspection work;
An elevator apparatus comprising: an electric lock that locks the inspection work table in a storage position when the stopper pin is not inserted into the counterweight and the counterweight guide rail. A stopper pin that is inserted into a counterweight connected to the car with a rope and a guide rail for the counterweight, and mechanically fixes the movement of the car,
An inspection workbench that is stored during normal operation and assembled in the lifting area of the car during inspection work;
An elevator apparatus comprising: an electric lock for locking the stopper pin to the counterweight and the counterweight guide rail when the inspection work table is not stored. A stopper pin that is inserted into a counterweight connected to the car with a rope and a guide rail for the counterweight, and mechanically fixes the movement of the car,
An inspection workbench that is stored during normal operation and assembled in the lifting area of the car during inspection work;
An electric lock that locks the inspection work table in a storage position when the stopper pin is not inserted into the counterweight and the counterweight guide rail;
An elevator apparatus comprising: an electric lock for locking the stopper pin to the counterweight and the counterweight guide rail when the inspection work table is not stored. In the elevator apparatus as described in any one of Claims 4 thru | or 6,
An elevator apparatus comprising: a switch for stopping the operation of the car when the stopper pin is inserted into the counterweight and the counterweight guide rail. In the elevator apparatus as described in any one of Claim 4 thru | or 7,
An elevator apparatus comprising a switch for stopping the operation of the car when the inspection work table is not stored.

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