JP2001192190A - Elevator apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of an elevator whose trouble of a control panel is not dealt with because the car is not lowered in spite of opening brakes of a hoisting machine unless the mass of a counterweight is larger than that of the car, in the trouble of the control panel which can only be dealt with by getting on the ceiling of an elevator car at the uppermost floor, when the trouble occurs with the car located at the uppermost floor. SOLUTION: A part of a conterweight is removably constructed so that the mass of counterweight is made smaller than the mass of the car by removing the part of the weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a hoistway, a car and a counterweight, and a rope for suspending both.
And a hoist that drives the rope.

[0002]

2. Description of the Related Art FIG. 12 shows FIG. 1 is an overhead view showing the conventional elevator device shown in FIG. In the figure, 1 is a car on which a person or a load is placed, 2 is a counterweight for compensating the weight of the car 1, 3 is a rope that suspends the car 1 and the counterweight 2, 4 is a car and the counterweight via the rope 3 2, a hoist that drives and raises and lowers, 4a is a brake of the hoisting machine 4, 5a and 5b are return wheels that change the suspension direction of the rope 3, 6 is a guide rail for a car, 7 is a guide rail for a counterweight, 8 is a hoistway, 10 is a hoisting wheel of the car 1, 11 is a hoisting wheel of the counterweight 2, 12 is a car-side cleat, and 13 is a counterweight-side cleat. Here, the hoisting machine 4 is disposed above the top of the hoistway 8, that is, above the car ceiling surface when the top floor of the car stops.

When the hoisting machine 4 is driven, the rope 3 suspended on the hoisting machine 4 is turned over by a return wheel 5 disposed above the hoisting machine 4.
a, turn through 5b, elevator car 1
Then, the counterweight 2 is moved up and down. At this time, the car guide rail 6 regulates the horizontal movement of the car 1, and the counterweight guide rail 7 regulates the horizontal movement of the counterweight 2, so that other devices in the hoistway and the elevator Contact and interference between the road wall and the car 1 and the counterweight 2 are prevented. If the control panel for driving the hoisting machine 4 breaks down and the car 1 stops, the hoisting machine 4
When the brake is manually released, the difference between the mass of the car 1 and the counterweight 2 causes the car 1 and the counterweight 2 to move up and down in the direction in which the heavier side goes down.

[0004]

In the above prior art, the arrangement of the control panel is not specified, but in such an elevator in which the hoisting machine is placed on the top of the hoistway, the control panel is also moved up and down. It is customary to install it near the hoist in the road. In the present invention, the control panel is disposed at the top of the hoistway, that is, above the car floor when the top floor of the car is stopped. It is intended for elevator equipment that must be carried on a train. Normally, the mass of the counterweight is set to the sum of the mass of the car and about half of the rated load, so if the load is less than half of the rated load, the counterweight is heavier. Therefore,
If the control panel breaks down while a car with a loading capacity less than half of the rated loading capacity is stopped near the top floor, the car will move upward even if the brake of the hoist is released. I can not get in and I can not repair the control panel.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a part of a counterweight is cut off by a simple method to make it lighter than a car. The car is opened and the car is moved downward, so that the operator can get on the car ceiling on the top floor and repair the control panel.

[0006]

According to the present invention, there is provided an elevator apparatus comprising: a car which moves up and down in a hoistway; a counterweight which moves up and down in the opposite direction to the car; a guide rail for the car and the counterweight; And a rope for suspending the counterweight, a hoisting machine arranged in the hoistway, and a car in the hoistway which is arranged above the car floor when the top floor of the car is stopped. In an elevator having a control panel which is required to be repaired by a worker riding on the ceiling of the car, the counterweight has a structure in which a part of a weight can be detached, and the mass is smaller than the mass of the car. It is characterized by being made possible.

Further, the removable weight is colored differently from other weights.

[0008] Further, the removable weight is shaped differently from other weights.

[0009] The present invention is further characterized in that the detachable weight is arranged below another weight.

Further, a detachable flexible wire is connected to the counterweight.

Further, the end of the flexible wire opposite to the one end connected to the counterweight is fixed to a hoistway.

Further, the end of the flexible wire opposite to the one end connected to the counter weight is set so as to stop at a position where the car is lowered from the top floor until a worker can get on the car ceiling and move up and down. It is characterized by being fixed to the road.

Further, a detachable receiving member is fixed to the guide rail of the counterweight, and a latch engaging with the receiving member is attached to a lower portion of the counterweight.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a bird's-eye view of an elevator apparatus according to a first embodiment of the present invention, FIG. 2 is a conceptual diagram showing a procedure of repair work in an elevator apparatus using the present invention, and FIG. In the figure, 1
Is a car on which a person or luggage is placed, 2 is a counterweight for compensating the weight of car 1, 2a is a detachable weight of counterweight 2, 3 is car 1 and counterweight 2
The hoisting machine 4a drives and raises and lowers the car 1 and the counterweight 2 via the rope 3
Is a brake of the hoisting machine 4, 4b is a remote controller for releasing the brake 4a, 6 is a guide rail for a car, 7 is a guide rail for a counterweight, 8 is a hoistway, 9 is a control panel, and 10 is a car 1 Reference numeral 11 denotes a hanging wheel of the counterweight 2, 12 denotes a car-side cleat, 13 denotes a counterweight-side cleat, 14 denotes a car shock absorber, and 15 denotes a counterweight shock absorber.

Here, the hoisting machine 4 and the control panel 9 are connected to the hoistway 8
Is placed above the car floor when the top floor of the car stops, and this maintenance and repair work is performed by lowering the car ceiling position of the elevator to near the top floor of the car and riding on the car ceiling . The brake 4a of the hoisting machine 4
The remote control 4b is opened by an operation from the landing on the top floor. In this example, the remote operation tool 4b is made of a flexible cord, for example, a wire, a chain, or the like. However, it is not limited to this. Also, in this example, the removable weight 2a
Is configured to be fastened to another weight of the counterweight 2 by a bolt, but the detachable structure is not limited to this. For example, a structure for fastening to the frame of the counterweight may be used. Further, instead of fastening with bolts, for example, a structure in which a weight is pressed by a latch may be used.

When the hoisting machine 4 is driven, the rope 3 suspended by the hoisting machine 4 raises and lowers the elevator car 1 and the counterweight 2. At this time, the car guide rail 6 regulates the horizontal movement of the car 1, and the counterweight guide rail 7 regulates the horizontal movement of the counterweight 2, so that other devices in the hoistway and the elevator Contact and interference between the road wall and the car 1 and the counterweight 2 are prevented.

In the event that the control panel 9 breaks down with the car 1 having a loading capacity less than half of the rating stopped near the top floor, the brake 4a of the hoisting machine 4 is operated by the remote operation tool 4b.
To release. Then, the car 1 rises to the movement limit at the top of the hoistway, and the counterweight 2 falls to the movement limit at the bottom of the hoistway.

Here, the worker descends from the lowest floor landing to the lowermost end surface of the hoistway, removes the detachable weight 2a from the weights of the counterweight 2 descending to the lowermost part of the hoistway, and removes the mass of the counterweight 2. To be lighter than the mass of car 1.

Thereafter, when the brake 4a of the hoisting machine 4 is released, the car 1 moves downward because the car 1 is heavier than the counterweight 2. In this way, the car 1 can be lowered from the top floor to an extent that the car 1 can get on the ceiling surface of the car 1, so that the operator can get on the ceiling of the car 1 and repair the failed control panel 9.

Second Embodiment FIG. 4 shows a main part of an elevator apparatus according to a second embodiment of the present invention. In the drawing, reference numeral 2b denotes a removable weight colored in a different color from other weights. In the drawings, the same reference numerals as those in the above-described drawings denote corresponding parts, and a description thereof will be omitted. Here, the weights 2b do not all need to be colored in the same color. For example, the color may be separately applied for each mass of 60 kg corresponding to one human.

Since the weight is colored in a different color from the other weights, the weight 2b to be removed can be removed without the operator being lost. Also, for example, in the case where the colors are separately applied every 60 kg, in consideration of the number of passengers in the car, it is easy to know the minimum weight required to remove the counterweight required to make the counterweight lighter than the car. be able to.

Third Embodiment FIG. 5 shows a main part of an elevator apparatus according to a third embodiment of the present invention. In the figure, reference numeral 2c denotes a detachable weight having a different shape from other weights. In the drawings, the same reference numerals as those in the above-described drawings denote corresponding parts, and a description thereof will be omitted.

Since the shape is different from other weights,
The weight 2c to be removed can be removed without the operator getting lost. It is also possible to appropriately set the mass per one weight 2c to such an extent that an operator can easily handle it. Furthermore, to make it easier for workers to handle, for example,
It is also possible to use a weight having a shape with some irregularities.

Fourth Embodiment FIG. 6 shows a main part of an elevator apparatus according to a fourth embodiment of the present invention. In the drawing, reference numeral 2d denotes a detachable weight disposed below other weights. In the drawings, the same reference numerals as those in the above-described drawings denote corresponding parts, and a description thereof will be omitted.

Since the weight 2d to be attached / detached is arranged below the counterweight 2, the attaching / detaching operation can be performed even if the height of the counterweight 2 is too high to reach. Also, the amount of work when removing the detachable weight 2d and placing it on the lowermost end surface of the hoistway is small, and the amount of work when reattaching after completion of repair is small.

Fifth Embodiment FIG. 7 shows a main part of an elevator apparatus according to a fourth embodiment of the present invention. In the figure, reference numeral 15 denotes a flexible wire connected to the counterweight 2. In the drawings, the same reference numerals as those in the above-described drawings denote corresponding parts, and a description thereof will be omitted. Here, the flexible wire 16 is connected to the counterweight 2 by using a detachable structure, for example, fastening with a bolt. The flexible wire 16 is removed in a normal state, and is connected when the control panel 9 breaks down and needs to be repaired. In this example, the flexible wire 1
Reference numeral 6 is a wire rope, but is not limited to this. For example, a plurality of rigid bodies such as a chain may be rotatably connected to form a single piece. Also,
The number of the flexible wires 16 is not limited to one, but may be plural. Further, in this example, 2d is used as a detachable weight, but any of 2a, 2b, 2c, and 2d described above may be used.

When the brake 4a of the hoisting machine 4 is released after the detachable weight 2d is removed, the car 1 moves downward but may be lowered too much. In such a case, by pulling the flexible wire 16, the counterweight 2
Is lowered and car 1 is raised, so car 1
Can be raised to an optimal position.

Further, the flexible wire 16 can be connected to the counterweight 2 in a detachable structure and is detached in a normal state, so that there is no hindrance to the normal operation of the elevator.

Embodiment 6 FIG. 8 and 9 are main views of an elevator apparatus according to a sixth embodiment of the present invention, and FIG. 10 is a conceptual diagram of a work procedure using the same. In the figure, 1
Reference numerals 6a and 16b denote flexible wires having ends opposite to one ends detachably coupled to the counterweight 2 fixed to the lowermost end surface of the hoistway 8, reference numeral 16a denotes a flexible wire formed of a wire rope, and reference numeral 16b denotes a flexible wire. This is a flexible wire composed of a chain. Here, the flexible wires 16a and 16b are removed from the counterweight 2 in a normal case, and the control panel 9 breaks down.
When the car 1 descends and reaches an optimal position, the flexure is extended and the length is set to a straight line in advance when the car 1 needs to be repaired. In this example, 2d is used as a detachable weight.
Any of 2b, 2c, and 2d may be used. In the drawings, the same reference numerals as those in the above-described drawings denote corresponding parts, and a description thereof will be omitted.

The lengths of the flexible wires 16a and 16b are set in advance so that when the car 1 descends and reaches an optimal position, the flexure is extended and becomes a straight line, so that the detachable weight 2d is removed. When the brake 4a is released, the car 1 descends and stops at the optimum position automatically. In addition, flexible wire 1
6a and 16b are detachable structures that can be connected to the counterweight 2 and are removed in normal times, so that there is no hindrance to normal elevator operation. Also,
Since the flexible wires 16a and 16b are fixed to the lowermost end surface of the hoistway 8, they will not be lost even if the connection with the counterweight 2 is removed.

In this embodiment, the flexible wires 16a and 16b are fixed to the lowermost end surface of the hoistway 8, but the fixing partner is not limited to this. For example, counter weight 2
It may be fixed to the lower part of the side wall of the nearby hoistway. In this case, the lengths of the flexible wires 16a and 16b can be reduced. The same effect can be obtained by fixing the guide rail 7 to the lowermost portion of the counterweight guide rail 7.

Embodiment 7 FIG. 11 is a main part view of Embodiment 7 of the elevator apparatus of the present invention. In the drawing, reference numeral 17 denotes a detachable receiving member fixed to the counterweight guide rail 7, and reference numeral 18 denotes a latch attached to a lower portion of the counterweight 2 and engaged with the receiving member 17. Here, the catch 17 is detached in a normal case, and is attached when the control panel 9 breaks down and needs to be repaired. When the car 1 descends and comes to an optimal position, the catch 17 is latched. The position to be fixed is set in advance so as to be engaged with. In this example, the latch 18 has a detachable structure, but is not limited to this. In this example, 2d is used as a detachable weight.
Is used, but any of 2a, 2b, 2c, and 2d described above may be used. In the drawings, the same reference numerals as those in the above-described drawings denote corresponding parts, and a description thereof will be omitted.

The catch 17 is set in advance at a position to be fixed so as to engage with the latch 18 when the car 1 descends to the optimum position, so that the detachable weight 2d is removed and the brake 4a is released. Then, the car 1 descends and automatically stops at the optimum position. In addition, the receiving member 17 has a detachable structure and has the counterweight guide rail 7.
And can be removed in normal times, so that there is no hindrance to normal elevator operation.

[0034]

Since the present invention is configured as described above, it has the following effects. In the elevator apparatus of the present invention,
A counterweight that moves up and down in the opposite direction to the basket;
A guide rail for the car and the counterweight, a rope for suspending the car and the counterweight, a hoisting machine arranged in the hoistway, The elevator is installed above the car floor, and its maintenance and inspection / repair is performed by an operator having a control panel that requires an operator to ride on the ceiling of the car. As a simple structure, the mass can be made smaller than the mass of the car. For this reason, the weight which can be removed is removed, the weight of the counterweight is made lighter than the weight of the car, the brake of the hoist is released, and the car is moved downward. Since the car can be lowered to such an extent that it can get on the ceiling of the car, the operator can get on the ceiling of the car and repair the failed control panel.

Further, the detachable weight is colored differently from other weights. Therefore, the weight to be removed can be removed without the operator getting lost.

Further, the detachable weight has a different shape from other weights. Thus, the weight to be removed can be removed without the operator getting lost.

In addition, the detachable weight is disposed below another weight. Thereby, even if the height of the whole counterweight is too high to reach, the attachment / detachment work can be performed. In addition, the amount of work when removing the detachable weight and placing it on the lowermost end surface of the hoistway, and the amount of work when re-attaching after completion of repair are small.

Also, a detachable flexible wire is connected to the counterweight. For this reason, when the car has been lowered too much, the car can be raised to an optimal position by pulling the flexible wire. Also,
Since the flexible wire is removed under normal circumstances, it does not hinder normal elevator operation.

Further, an end opposite to one end of the flexible wire connected to the counterweight is fixed to the hoistway. For this reason, the length of the flexible wire can be shortened.

The other end of the flexible wire opposite to the one connected to the counterweight is set so as to stop at a position where the car is lowered from the top floor until a worker can get on the car ceiling. It is fixed on the road. Therefore, when the brake of the hoist is released, the car descends and automatically stops at the optimum position.

Further, a detachable receiving member is fixed to the guide rail of the counterweight, and a latch engaging with the receiving member is attached to a lower portion of the counterweight. Therefore, when the brake of the hoist is released, the car descends and automatically stops at the optimum position.

[0042]

[Brief description of the drawings]

FIG. 1 is a first embodiment of an elevator apparatus according to the present invention;
Overhead view.

FIG. 2 is a first embodiment of the elevator apparatus of the present invention.
FIG.

FIG. 3 is a first embodiment of an elevator apparatus according to the present invention;
FIG.

FIG. 4 is a second embodiment of the elevator apparatus of the present invention.
FIG.

FIG. 5 is a third embodiment of the elevator apparatus of the present invention.
FIG.

FIG. 6 is a fourth embodiment of the elevator apparatus of the present invention.
FIG.

FIG. 7 is a fourth embodiment of the elevator apparatus of the present invention.
FIG.

FIG. 8 is a sixth embodiment of the elevator apparatus of the present invention.
FIG.

FIG. 9 is an elevator apparatus according to a sixth embodiment of the present invention.
FIG.

FIG. 10 is a conceptual diagram showing a work procedure of an elevator apparatus according to a sixth embodiment of the present invention.

FIG. 11 is a main part view of Embodiment 7 of the elevator apparatus of the present invention.

FIG. 12 is an overhead view of a conventional elevator apparatus disclosed in Japanese Patent Application Laid-Open No. 10-139321.

[Explanation of symbols]

1 basket, 2 counterweights, 3 ropes, 4
Hoisting machine, 4a Hoisting machine brake, 4b Hoisting machine brake release remote control device, 5a, 5b Return car, 6 car guide rail, 7 counterweight guide rail, 8 hoistway, 9 control panel, 10 basket hanging cars, 1
1 Counterweight hanging car, 12 car side cleat,
13 Rope clasp on counterweight side, 14 Cushion shock absorber, 15 Counterweight shock absorber, 16, 16
a, 16b Flexible wire, 17 catch, 18 latch.

Claims (8)

[Claims] 1. A car that moves up and down the hoistway, a counterweight that moves up and down in the opposite direction to the car, a guide rail for the car and the counterweight, and a rope that suspends the car and the counterweight. A hoisting machine arranged in the hoistway and a car in the hoistway that are arranged above the car floor when the top floor of the car is stopped, and for maintenance and inspection and repair, an operator rides on the ceiling of the car. An elevator having a control panel that needs to be performed, wherein the counterweight has a structure in which a part of a weight is detachable so that the mass can be made smaller than the mass of the car. . 2. The elevator apparatus according to claim 1, wherein the detachable weight is colored differently from other weights. 3. An elevator apparatus according to claim 1, wherein said removable weight has a different shape from other weights. 4. The elevator apparatus according to claim 1, wherein said removable weight is arranged below another weight. 5. The elevator apparatus according to claim 1, wherein a detachable flexible wire is connected to the counterweight. 6. The elevator apparatus according to claim 4, wherein an end of the flexible wire opposite to one end connected to the counterweight is fixed to a hoistway. 7. An elevator which sets an end opposite to one end of the flexible wire connected to the counterweight so as to stop at a position where the car is lowered from the top floor until a worker can get on the car ceiling. The elevator apparatus according to claim 4, wherein the elevator apparatus is fixed to a road. 8. The apparatus according to claim 1, wherein a detachable receiving member is fixed to said guide rail of said counterweight, and a latch engaging with said receiving member is attached to a lower portion of said counterweight. Item 5. The elevator device according to item 4.