JP3353032B2 - elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for performing maintenance work on a hoist provided on a hoistway from a car.

[0002]

2. Description of the Related Art FIG. 8 is a configuration diagram showing an example of a conventional elevator. In the drawing, 1 is a hoistway, 2 is a pair of car guide rails installed in the hoistway 1, 3 is a pair of weight guide rails installed in the hoistway 1, 4
Is a machine base (supporting beam) fixed (erected) above the guide rails 2 and 3, and 5 is a hoisting machine supported by the machine base 4 in the hoistway 1.

[0003] Reference numeral 6 denotes a main rope wound around a sheave of a hoisting machine 5, and 7 is suspended by one end of the main rope 6 and guided by a car guide rail 2 to move up and down in the hoistway 1. Basket, 8
Are counterweights suspended from the other end of the main rope 6 and guided by the weight guide rail 3 to move up and down in the hoistway 1;
Reference numeral 0 denotes a car shock absorber and a weight shock absorber that are respectively provided upright at the bottom of the hoistway 1. Reference numeral 11 is connected between the counterweight 8 and the bottom of the hoistway 1, and the counterweight 8 is used for the weight. Shock absorber 10
It is a connecting tool that is held at a position where it contacts the.

In the conventional elevator constructed as described above, since the hoisting machine 5 is disposed in the upper part of the hoistway 1, the maintenance work for the hoisting machine 5 is performed from above the car 7. In addition, during the maintenance work on the hoisting machine 5, when replacing the friction material of a brake (not shown), the car 7 is prevented from moving even if the brake is released.
Must be held in place and safely stopped.

In such a case, as shown in FIG. 8, with the counterweight 8 lowered to the lowest position,
Thus, the connection between the counterweight 8 and the bottom of the hoistway 1 is established. As a result, the position of the car 7 is maintained via the main rope 6.

[0006]

In the conventional elevator constructed as described above, it is necessary to hold the counterweight 8 at the lowermost position during maintenance work of the hoisting machine 5 from above the car 7. In addition, work at the bottom of the hoistway 1 and at two places on the car 7 is required, and there is a problem that work efficiency is low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can improve the efficiency of maintenance work of a hoist from a car. The purpose is to obtain data.

[0008]

An elevator according to the present invention is provided.
The multiple guide rails installed in the hoistway,
Machine stand, sheave and fixed on the upper part of the guide rail
It has a brake and is supported by a machine platform in the hoistway.
Hoist, main rope wound on a sheave, suspended on the main rope
Lowered, guided by the guide rails, and moved up and down the hoistway.
Car and counterweight, and maintenance work of the hoist from above the car
When performing work, connect the car to the machine stand and
Has a connecting member that holds the car in place
It is provided with a holding device . The coupling member and the removable basket having a detector for detecting that the connecting member is mounted on the machine base, and a controller for controlling the operation of the hoisting machine in response to a signal from the detector Holding device
Was used. Further, the connecting member is made detachable, and a locking portion to be locked to the machine base is provided on the connecting member .

[0009] In addition, elevators according to the present invention, the lifting
Multiple guide rails, sheaves and blocks installed on the road
Hoist with rake and located at the top in the hoistway
Machine, main rope wrapped around the sheave, suspended on the main rope
Is guided by the guide rails and moved up and down the hoistway
Perform maintenance work on the hoisting machine from the
When connecting the car to the guide rail when
Has a connecting member that holds the car in place
It is provided with a holding device .

[0010] In addition, elevators according to the present invention, the lifting
Multiple guide rails, sheaves and blocks installed on the road
Hoist with rake and located at the top in the hoistway
Machine, main rope wrapped around the sheave, suspended on the main rope
Is guided by the guide rails and moved up and down the hoistway
Perform maintenance work on the hoisting machine from the
When connecting the car to the hoistway wall,
Has a connecting member that holds the car in place
It is provided with a holding device .

[0011] In addition, elevators according to the present invention, the lifting
Multiple guide rails, sheaves and blocks installed on the road
Hoist with rake and located at the top in the hoistway
Machine, main rope wrapped around the sheave, suspended on the main rope
Is guided by the guide rails and moved up and down the hoistway
Perform maintenance work on the hoisting machine from the
When connecting the car to the landing sill,
Car cages with connecting members that hold the car in place
It has a holding device . In addition, the connecting members are made detachable, and a storage section is provided for storing the connecting members when not in use.
I did.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a side view showing a use state of an elevator car holding device according to Embodiment 1 of the present invention. In the figure,
1 is a hoistway, 2 is a pair of car guide rails installed in the hoistway 1, and 3 is a pair of weight guide rails installed in the hoistway 1.

Reference numeral 4 denotes a machine table (support beam) fixed (erected) above the guide rails 2 and 3, 5 denotes a hoisting machine supported by the machine table 4 in the hoistway 1, and 6 denotes a hoist. The main rope 7 wound around the sheave of the machine 5 is suspended at one end of the main rope 6 and is guided by the car guide rail 2 to move up and down in the hoistway 1. 8 is the main rope 6. Is a counterweight which is hung at the other end of the hoistway and is guided by the weight guide rail 3 to move up and down in the hoistway 1.

The hoisting machine 21 is connected between the machine base 4 and the car 7 via fasteners 22 such as bolts during maintenance work of the hoisting machine 5, and holds the car 7 at a predetermined position with respect to the hoisting machine 5. 23 is a detector mounted on the machine base 4 and detecting that the connecting member 21 is attached to the machine base 4. As the detector 23, for example, a limit switch is used. . A control device 24 controls the operation of the hoisting machine 5. A detector 23 is connected to the control device 24. When the connecting member 21 is attached to the machine base 4, the control device 24 controls the operation of the hoisting machine 5. Driving becomes impossible.

In such a car holding device, the work of attaching and detaching the connecting member 21 to and from the machine base 4 and the car 7 can be performed on the car 7, and the car 7 is positioned at a predetermined position with respect to the hoisting machine 5. , The maintenance work for the hoisting machine 5 can be easily performed from the car 7. Therefore, the maintenance work on the hoisting machine 5 can be performed only on the car 7 and the work efficiency is improved.

When the connecting member 21 is attached to the machine base 4, it is detected by the detector 23,
Since the control device 24 disables the operation of the hoist 5 in response to the signal from 3, the operation of the hoist 5 with the connecting member 21 attached is prevented, and safety is improved.

Further, during normal operation, that is, during non-use, the connecting member 21 is detached from the machine base 4 and the car 7, and is placed on a storage part 4 a provided on the machine base 4 as shown in FIG. Fastened via the fastener 22 and stored. Thereby, the work of carrying in / out the connecting member 21 into the hoistway 1 and the work of transporting the connecting member 21 can be omitted, and the working efficiency can be further improved. When the connecting member 21 is stored on the car 7, the car 7 becomes heavier, and accordingly, the counterweight 8 also becomes heavier and the hoisting machine 5 becomes larger. The weight of the car 7 and the counterweight 8 and the increase in the size of the hoisting machine 5 can be prevented.

Embodiment 2 FIG. Next, FIG. 3 is a side view showing a use state of the elevator car holding device according to the second embodiment of the present invention. In the drawing, 25 is connected between the machine base 4 and the car 7 via the fastener 22 during maintenance work of the hoisting machine 5, and holds the car 7 at a predetermined position with respect to the hoisting machine 5. The connecting member 25 is provided with a locking portion 25 a having a U-shaped cross section that is locked to the machine base 4.

In such a car holding device, as in the first embodiment, the connecting member 25 is connected between the machine base 4 and the car 7, and maintenance work on the hoisting machine 5 is performed from above the car 7. However, since the connecting member 25 is provided with the locking portion 25a, and the locking portion 25a is locked to the machine base 4, the connecting member 25 is erroneously attached to the hoistway 1 during the attaching / detaching operation of the connecting member 25. It can be prevented from falling inside.

Embodiment 3 Next, FIG. 4 is a side view showing a use state of the elevator car holding device according to Embodiment 3 of the present invention, and FIG. 5 is a plan view of a main part of FIG. In the drawing, 26 is connected between the car guide rail 2 and the car 7 via a fastener 27 such as a bolt during maintenance work of the hoisting machine 5, and the car 7 is positioned at a predetermined position with respect to the hoisting machine 5. It is a connecting member for holding the connecting member.

As described above, the connecting member 26 may hold the car 7 with respect to the car guide rail 2, and the attaching and detaching operation of the connecting member 26 can be performed on the car 7, so that the maintenance work can be performed. Workability is improved.

Embodiment 4 Next, FIG. 6 is a side view showing a use state of an elevator car holding device according to Embodiment 4 of the present invention. In the figure, 28 is connected between the car 1 and the wall 1a of the hoistway 1 via fasteners 29 such as bolts at the time of maintenance work of the hoisting machine 5, and the car 7 is fixed to the hoisting machine 5 by a predetermined amount. Is a connecting member having an L-shaped cross section for holding the connecting member at the position indicated by the arrow. At a predetermined position of the wall 1a, a metal pad (not shown) to which the fastener 29 is to be fastened is buried and fixed in advance.

As described above, the connecting member 28 may hold the car 7 with respect to the wall 1a.
The attachment / detachment work 8 can be performed on the car 7, and the workability of maintenance work is improved.

Embodiment 5 Next, FIG. 7 is a side view showing a use state of an elevator car holding device according to Embodiment 5 of the present invention. In the figure, 30 is a landing sill on the top floor, 31 is connected between the landing sill 30 and the car 7 via fasteners 32 such as bolts during maintenance work of the hoisting machine 5, and the car 7 is connected to the hoisting machine 5 Is a connecting member for holding at a predetermined position.

As described above, the connecting member 31 is connected to the landing threshold 30.
The car 7 may be held against the car 7, and the connecting member 31 can be attached and detached on the car 7, thereby improving the workability of the maintenance work.

It should be noted that the storage members of the connection members of the second to fifth embodiments can be provided on the machine base 4. Further, the shape and material of the connecting member are not particularly limited, but needless to say, strength is required to hold the car safely.

[0027]

As described above, according to the present invention, elevator <br/> chromatography data of the present invention, using the connecting member to hold the car in position relative to the hoisting machine, the cage in a machine stand upon maintenance Because of the connection, the maintenance work of the hoist can be easily performed only on the car, and the work efficiency of the maintenance work of the hoist can be improved. Also, since the connecting member is detachable, a detector is provided for detecting that the connecting member is attached to the machine base, and the operation of the hoist is controlled according to a signal from the detector. It is possible to prevent the hoist from being operated with the connecting member attached to the machine base, and to improve safety. Furthermore, since the connecting member is made detachable and the locking portion to be locked to the machine base is provided on the connecting member, it is possible to prevent the connecting member from being accidentally dropped into the hoistway during the attaching and detaching operation of the connecting member. Can be.

Further, elevators of the present invention, using the connecting member to hold the car in position relative to the hoisting machine, the connecting car guide rails upon maintenance, the hoisting machine maintenance It can be easily performed only on the car, and the work efficiency of the maintenance work of the hoist can be improved.

Further, elevators of the present invention, since the use of a coupling member to hold the car in position relative to the hoisting machine, connecting the cage to the wall of the hoistway upon maintenance, the hoist The maintenance work can be easily performed only on the car, and the work efficiency of the maintenance work of the hoist can be improved.

Further, elevators of the present invention, using the connecting member to hold the car in position relative to the hoisting machine, the connecting car in landing sill upon maintenance, the hoisting machine maintenance It can be easily performed only on the car, and the work efficiency of the maintenance work of the hoist can be improved. Ma
In addition, since the connecting member is detachable and a storage unit for storing the connecting member when not in use is provided, it is possible to omit the work of carrying in and out the connecting member into the hoistway and the work of transporting the connecting member. Work efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a use state of an elevator car holding device according to Embodiment 1 of the present invention.

FIG. 2 is a side view showing a storage state of the connecting member of FIG. 1;

FIG. 3 is a side view showing a use state of an elevator car holding device according to a second embodiment of the present invention.

FIG. 4 is a side view showing a use state of an elevator car holding device according to a third embodiment of the present invention.

FIG. 5 is a plan view of a main part of FIG. 4;

FIG. 6 is a side view showing a use state of an elevator car holding device according to a fourth embodiment of the present invention.

FIG. 7 is a side view showing a use state of an elevator car holding device according to a fifth embodiment of the present invention.

FIG. 8 is a configuration diagram illustrating an example of a conventional elevator.

[Explanation of symbols]

1 hoistway, 2 car guide rails, 3 weight guides
Drill, 4 Machine stand, 4a Storage unit, 5 Hoisting machine, 6
Main rope, 7 baskets, 8 counterweights, 21, 25, 26,
28, 31 connecting member, 23 detector, 24 control device, 25a locking part, 30 landing threshold.

Claims (7)

(57) [Claims] 1. A plurality of guides installed in a hoistway
A rail, a machine platform fixed to the upper part of the guide rail, a sheave, and a brake, and the machine platform in the hoistway.
A more supported hoist, a main rope wound around the sheave, suspended by the main rope, and guided by the guide rail.
When performing maintenance work on the hoisting machine from above and below the car and the counterweight that is raised and lowered in the hoistway,
Connect the above cage to the machine stand and specify it for the above hoist
Car having a connecting member for holding the car at the position of
An elevator comprising a holding device. 2. The method according to claim 1, wherein the connecting member is detachable .
Your holding device is used, the number a detector for detecting that the said connecting member is attached to the machine base, and a control device for controlling operation of the hoisting machine in response to a signal from the detector
Elevators according to claim 1, characterized in that it. 3. The connection member according to claim 1, wherein the connection member is detachable, and the connection member is provided with a locking portion that is locked to the machine base. Elevator . 4. A plurality of guides installed in a hoistway
It has rails, sheaves and brakes and is located at the top of the hoistway.
It is to hoist and, the main ropes being wound on the sheave, suspended above main rope is guided in the guide rail
Car and the counterweight is raised and lowered the hoistway Te, and the gas when performing maintenance work of the traction machine from above the car
Connect the car to the idling rail and to the hoist
Has a connecting member for holding the car at a predetermined position.
Elevator, characterized in that it comprises a Rukago holding device
Ta. 5. A plurality of guides installed in a hoistway
It has rails, sheaves and brakes and is located at the top of the hoistway.
It is to hoist and, the main ropes being wound on the sheave, suspended above main rope is guided in the guide rail
When performing maintenance work on the car and the counterweight, which are raised and lowered in the hoistway, and the hoist from above the car,
Connect the car to the downcomer wall and
Has a connecting member for holding the car at a predetermined position.
An elevator having a cage holding device.
Ta. 6. A plurality of guides installed in a hoistway.
It has rails, sheaves and brakes and is located at the top of the hoistway.
It is to hoist and, the main ropes being wound on the sheave, suspended above main rope is guided in the guide rail
The ride when performing maintenance work of the traction machine car and the counterweight is raised and lowered the hoistway, and on the car Te
Connect the car to the sill and place
Do you have a connecting member that holds the car in place?
An elevator having a holding device. 7. The connecting member according to claim 1, wherein the connecting member is detachable and includes a storage section for storing the connecting member when not in use. Elevator .