JP2010137962A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of securing a safe state by immediately operating required switches of an operation switch part, even when getting on a working platform on a car from the front side of the car, and even when getting on from the rear side, in an elevator of penetrating in two-ways. <P>SOLUTION: This elevator device includes a car 4 of penetrating in two-ways arranged in a hoistway 1 and having respectively doorways 5a and 5b on a front face and a rear face, the working platform 12 on the car 4 for allowing a worker for a maintenance-inspection to get on, a first operation switch part 13a arranged in a front of the working platform 12, and a second operation switch part 13b arranged in a rear of the working platform 12, and a car upper safety switch, a car upper inspection switch and an illumination switch are arranged in the respective operation switch parts 13a and 13b. When the worker gets on the front of the working platform 12, the worker operates the switches of the first operation switch part 13a, and when getting on the rear part, the worker operates the switches of the second operation switch part 13b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator apparatus having an improved structure of a work table for maintenance and inspection on a car.

When performing maintenance and inspection in the elevator hoistway, it is common for an operator to get on the car in the hoistway from the entrance / exit of the elevator hall, and perform maintenance and inspection work using the car as a scaffold (patents) Reference 1).
FIG. 3 schematically shows the structure of a general elevator. A hoisting machine 2 is installed in the upper part of the hoistway 1 of the building, a main rope 3 is wound around the hoisting machine 2, and a car 4 is suspended in the hoistway 1 through the main rope 3. ing. An entrance / exit 5 is provided in front of the car 4, and a car door 6 for opening / closing the entrance / exit 5 is provided at the entrance / exit 5.

  The car 4 is driven by the hoisting machine 2 and moves up and down in the hoistway 1. A control panel 7 is installed in the upper part of the hoistway 1, and the operation of the car 4 is controlled by the control panel 7. Entrance halls 8 are provided in the elevator halls on each floor of the building, and hold doors 9 for opening and closing the doors 8 are provided at the entrances 8 respectively.

  The upper part of the car 4 serves as a work table 12 on which a maintenance inspection worker gets in, and an operation switch unit 13 is provided on the work table 12. As shown in FIG. 4, the operation switch unit 13 includes a car safety switch 14, a car inspection switch 15, a lighting switch 16, and the like as operation switches. Further, on the work table 12, an illumination device 17 that illuminates the upper portion of the car 4 and its periphery is provided.

The operation switch unit 13 is installed at a position on the front side of the car 4. The car safety switch 14 provided in the operation switch unit 13 opens the normal operation circuit provided in the control panel 7 and enables the car 4 to be operated by a control circuit for inspection different from that. The car inspection switch 15 is a switch for moving the car 4 up and down at an inspection operation speed slower than the normal operation speed as necessary. The lighting switch 16 is a switch for lighting the lighting device 17, and this lighting switch 16 uses the limit switch to move the car 4 when the car 4 rises and approaches the ceiling of the hoistway 1. It also serves as a switch for securing a safe top gap between the work table 12 of the car 4 and the ceiling of the hoistway 1 by stopping.
Further, for example, a maintenance unit 19 for inspection work is provided beside the entrance hall 8 of the elevator hall on the top floor, and a car 4 in the hoistway 1 is operated by an operator operating this maintenance unit 19 in the elevator hall. The position of can be adjusted.

At the time of maintenance and inspection of the elevator, the maintenance unit 19 is operated to move the car 4 to the top floor, for example, as shown in FIG. 3, and stop the work. An operator manually opens, enters the hoistway 1 from the entrance 8 and gets on the work table 12 above the car 4.
When an operator enters the work table 12, the car safety switch 14 and the lighting switch 16 are immediately operated to ensure safety. Moreover, the worker who got on the work platform 12 manually closes the hold door 9 of the entrance 8 and prevents a third person from falling into the hoistway 1 from the entrance 8. In this state, the elevator inspection work is advanced while operating the car inspection switch 15.
Since the car safety switch 14 and the lighting switch 16 are arranged at the front part of the car 4 adjacent to the entrance 8, an operator must immediately operate to ensure safety when getting in from the entrance 8. Can do.
By the way, as shown in FIG. 5, the entrance and exit 5a and 5b are provided in the front surface and the rear surface of the cage | basket | car 4, respectively, and the cage door 6a and 6b are provided in these entrances and exits 5a and 5b, respectively. Elevators with are generally known. Such two-way penetration type elevators are often used in luggage and station building elevators. In this two-way penetration type elevator, for example, the elevator hall on the first floor and the second floor of the building is provided with a doorway 8a that can be opposed to the entrance 5a on the front surface of the car 4, and the elevator hall on the uppermost floor (third floor) An entrance / exit 8b that can face the entrance 5b on the rear surface of the car 4 is provided. Open / close holders 9a and 9b are provided at the entrances 8a and 8b, respectively.
JP 62-222987

  In the maintenance and inspection for the two-way through type elevator as shown in FIG. 5, the car 4 is moved to the top floor and stopped, and the work table 12 on the upper side of the car 4 is moved from the top floor entrance 8b. When the worker gets into the car, the car 4 is moved from the top floor to the lower floor, for example, the second floor and stopped, and the worker gets on the work table 12 above the car 4 from the entrance 8a on the second floor. There are cases.

When a worker gets in from the entrance / exit 8b on the top floor, since the entrance / exit 8b faces the rear side (right side in the figure) of the car 4, the worker gets in from the rear side of the work table 12. .

  However, the car safety switch 14, the car inspection switch 15, and the lighting switch 16 as operation switches on the work table 12 are disposed at the front side of the work table 12, and therefore the car 4 is placed on the top floor. When the worker gets into the rear part of the workbench 12 after stopping, the worker must move from the rear part of the workbench 12 to the front part and operate the switches of the operation switch part 13 at the front part. Don't be. Until the illumination switch 16 of the operation switch unit 13 is operated, the top of the work table 12 is dark. For this reason, the worker stumbles and falls while moving from the rear to the front, or falls from the work table 12. there is a possibility.

  Further, after an operator gets in from the entrance 8b, the operator should manually close the hold door 9b of the entrance 8b. However, since the top of the work table 12 becomes darker when the hold door 9b is closed, the hall There is a risk of leaving the door 9b open, and as a result, a third person may fall into the hoistway 1 from the entrance 8b.

However, in practice, there are safety measures to isolate the work space from the third party by providing a work tag that indicates to the third party that the worker is working on the elevator hall side and a work fence that covers the vicinity of the entrance / exit. Taken.
The present invention has been made paying attention to such points, and the object of the present invention is to enter from the rear side of a two-way penetration type elevator even when entering the work table on the car from the front side of the car. It is an object of the present invention to provide an elevator apparatus that can immediately operate necessary switches of an operation switch unit to ensure a safe state.

  In order to achieve such an object, the present invention is provided in a hoistway of a building so as to be movable up and down, and is provided at the top of the car, a two-way penetrating car having an entrance on the front and rear surfaces, A work table for maintenance workers to enter, and an operation switch unit including a car safety switch, a car inspection switch, and a lighting switch provided at each of the front and rear positions of the work table. It is characterized by doing.

  According to the present invention, in a two-way penetrating elevator, it is possible to operate the necessary switches of the operation switch unit immediately when entering the work table on the car from the front side of the car or from the rear side, and to operate safely. A state can be secured.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the part corresponding to the conventional structure, and the overlapping description is abbreviate | omitted.

  FIG. 1 is an overall configuration diagram of a two-way penetrating elevator, and FIG. 2 is a plan view of the elevator car. The work table 12 above the car 4 in this embodiment is provided with a first operation switch portion 13a and a second operation switch portion 13b. The first operation switch portion 13 a is disposed at the front portion of the car 4, and the second operation switch portion 13 b is disposed at the rear portion of the car 4. A car safety switch 14, a car inspection switch 15, and a lighting switch 16 are disposed in the first and second operation switch portions 13a and 13b, respectively.

  In the building where this two-way penetration type elevator is installed, for example, on the first floor and the second floor, there is a doorway 8a that can be opposed to the front entrance 5a of the car 4, and the rear surface of the car 4 on the top floor (third floor). An entrance / exit 8b that can face the entrance 5b is provided. For example, maintenance units 19 are provided beside the entrance / exit 8a on the second floor and the entrance / exit 8b on the top floor.

In this two-way penetrating elevator, for example, when an operator enters the hoistway 1 from the second floor entrance 8a and performs maintenance work, the car 4 is stopped at the second floor entrance 8a. Then, the operator manually opens the hold door 9a of the entrance / exit 8a on the second floor, enters the hoistway 1 and gets on the work table 12 above the car 4.
In this case, the operator gets into the front part of the workbench 12, but since the first operation switch part 13a is provided at the front part of the workbench 12, the first operation switch is immediately after the boarding. The car safety switch 14 and the lighting switch 16 of the part 13a can be operated.

Then, the lighting device 17 is turned on by the operation of the lighting switch 16, and the upper portion of the car 4 and its surroundings are brightly illuminated, thereby ensuring safety. When an operator gets on the work table 12, the hold door 9a of the boarding / exit 8a after the boarding is manually closed. At this time, even if the hold door 9a is closed, the brightness of the upper part of the car 4 and the surrounding area is ensured by the lighting of the lighting device 17, and therefore there is no inconvenience in closing the hold door 9a. There is no such thing as leaving it open. And the danger that a third party falls into the hoistway 1 from the entrance / exit 8a can be prevented by closing the hold door 9a. Thus, in the state where safety on the work table 12 is ensured, the inspection work for the elevator is advanced while operating the on-car inspection switch 15.
On the other hand, when the maintenance inspection of the elevator is performed by an operator entering the hoistway 1 from the entrance / exit 8b on the top floor (the third floor), the car 4 is stopped at the position of the entrance / exit 8b on the top floor, and the entrance / exit An operator manually opens the holder 9b of the mouth 8b, enters the hoistway 1 and gets on the workbench 12 at the top of the car 4.
In this case, the operator gets into the rear part of the workbench 12, but since the second operation switch part 13b is provided at the rear part of the workbench 12, the second operation switch is immediately after the boarding. The car safety switch 14 and the lighting switch 16 of the part 13b can be operated.

Then, the lighting device 17 is turned on by the operation of the lighting switch 16, and the upper portion of the car 4 and its surroundings are brightly illuminated, thereby ensuring safety. When the worker gets on the work table 12, the hold door 9b of the boarding / exit 8b after the boarding is manually closed. At this time, even if the hold door 9b is closed, the brightness of the upper part of the car 4 and the surrounding area is ensured by the lighting of the lighting device 17, and therefore there is no inconvenience in closing the hold door 9b. There is no such thing as leaving it open. Then, by closing the hold door 9b, it is possible to prevent a third person from falling into the hoistway 1 from the entrance 8b. Thus, in the state where safety on the work table 12 is ensured, the inspection work for the elevator is advanced while operating the on-car inspection switch 15.
As described above, according to this embodiment, the car safety switch 14 and the lighting switch 16 are provided at the front and rear positions of the workbench 12, and accordingly, the workbench 12 from the front side of the car 4. Even when boarding the vehicle or working board 12 from the rear side, the car safety switch 14 and the lighting switch 16 can be operated immediately after the boarding to ensure a safe state.

1 is an overall configuration diagram of an elevator apparatus according to an embodiment of the present invention. The top view of the cage | basket | car of the elevator apparatus. The whole general elevator apparatus block diagram. The top view of the cage | basket | car of the elevator apparatus. The whole block diagram of the conventional two-way penetration type elevator apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hoistway 2 ... Hoisting machine 3 ... Main rope 5a. 5b. Entrance / exit 6a. 6b ... Car door 7 ... Control panel 8a. 8b. Entrance / exit 9a. 9b ... Holder 12 ... Workbench 13a ... First operation switch part 13b ... Second operation switch part 14 ... Safety switch on car 15 ... Check switch on car 16 ... Light switch 17 ... Lighting device 19 ... Maintenance unit

Claims (1)

A two-way penetrating car that is provided in the hoistway of the building so that it can be moved up and down, and has an entrance on the front and rear surfaces,
A workbench provided at the top of the car for maintenance workers to board;
An operation switch unit including a car safety switch, a car inspection switch, and a lighting switch, which are respectively provided at the front and rear positions of the work table,
An elevator apparatus comprising:

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