JP2002160876A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device that uses major equipment of a hydraulic elevator to be renewed and remodels it into a traction elevator. SOLUTION: A counterweight 19 is disposed between a wall surface of a hoistway 1 and an outer surface of a car 2, and in a position that corresponds to the place from which a hydraulic lifting and lowering mechanism 10 for vertical drive of the car 2 has been removed and does not overlap with the car 2 in the horizontal plane of projection. Both ends of a main rope 25 are connected respectively to the car 2 and the counterweight 19, and a hoist 21 with a driving sheave 22 about which the main rope 25 is entrained is disposed in a position that corresponds to the place of removal of the hydraulic lifting and lowering mechanism 10 and does not overlap with the car 2 in the horizontal plane of projection. Major equipment, such as the car 2, of the hydraulic elevator to be renewed is diverted to remodel it into the traction elevator. This reduces the construction cost and shortens the construction period.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus for renewing a hydraulic elevator to be replaced with a towed elevator.

[0002]

2. Description of the Related Art FIG. 3 is a perspective view showing a conventional hydraulic elevator. In the drawing, reference numeral 1 denotes a hoistway, and 2 denotes a car, which is guided by a car guide rail 3 erected on the hoistway 1 to move up and down a predetermined route. 4 is a hydraulic jack erected on the hoistway 1 and arranged between the wall of the hoistway 1 and the outer surface of the car 2, 5 is a pulley pivotally mounted on the upper end of the plunger of the hydraulic jack 4, and 6 is a hoist It is a pulley guide rail that stands on the road 1 and guides the frame of the pulley 5.

A main cable 7 has one end connected to the car 2 and wound around the pulley 5 and the other end connected to a fixed body near the base of the hydraulic jack 4. It is connected to jack 4. Reference numeral 10 denotes a hydraulic lifting mechanism, which is mainly composed of a hydraulic jack 4, a pulley 5, a pulley guide rail 6, and a main rope 7.

The conventional hydraulic elevator is constructed as described above. When the hydraulic lifting mechanism 10 operates, that is, when hydraulic oil is fed from the hydraulic power unit 8 to the hydraulic jack 4, the hydraulic jack 4 extends and the pulley 5 rises. I do. And
As the pulley 5 rises, the car 2 is driven to rise via the main rope 7. When the pressure oil is returned from the hydraulic jack 4 to the hydraulic power unit 8, the hydraulic jack 4 is shortened and the pulley 5 is lowered. When the pulley 5 descends, the car 2 descends via the main rope 7.

FIG. 4 shows, for example, Japanese Patent Application Laid-Open No. 7-10434.
FIG. 1 is a perspective view showing a conventional towed elevator disclosed in Japanese Unexamined Patent Publication (Kokai) No. H10-15095. In the figure, reference numeral 1 denotes a hoistway, and 2 denotes a car, which is guided by a car guide rail 11 erected on the hoistway 1 to move up and down a predetermined route. 12 is a car pulley pivotally mounted on each side of the lower part of the car 2, and 13 is a counterweight, and the hoistway 1
Is guided by the counterweight guide rail 14 erected in the vertical direction and moves up and down another predetermined path.

Reference numeral 15 denotes a counterweight pulley pivotally mounted on the upper portion of the counterweight 13. Reference numeral 16 denotes a hoist installed at the top of the hoistway 1, and a drive sheave 17 is provided.
Reference numeral 17 denotes a main rope, one end of which is connected to a fixed portion at the top of the hoistway 1, descends, is sequentially wound around the car pulleys 12 on both sides, ascends, is wound around the drive sheave 17, descends and balances. It is wound around the weight pulley 15 and rises, and the other end is connected to a fixed portion at the top of the hoistway 1.

The conventional traction elevator is constructed as described above. When the hoist 16 is energized, the drive sheave 17 rotates and the main rope 18 is driven. As a result, the main rope 18
, The car 2 and the counterweight 13 are moved up and down in directions opposite to each other.

[0008]

When the conventional hydraulic elevator as described above is renewed, it may be modified to a traction type elevator which is excellent in energy saving and elevating operation characteristics. At the time of such renovation, in the case of the hydraulic elevator, since the machine room is not installed above the top of the hoistway 1, the hoisting machine 16 is installed on the top of the hoistway 1 as shown in FIG. Tow-type elevator is adopted.

[0009] In the construction of such an elevator apparatus for renewing a hydraulic elevator to upgrade it to a tow-type elevator, most of the equipment of the hydraulic elevator is removed to install the tow-type elevator.
Therefore, there has been a problem that the repair work cost increases.
In addition, there is a problem that it takes a long time for the repair work and the convenience of the elevator user is impaired.

The present invention has been made to solve such a problem, and an object of the present invention is to provide an elevator apparatus for upgrading to a tow-type elevator by using the essential equipment of a hydraulic elevator to be updated. I do.

[0011]

SUMMARY OF THE INVENTION In an elevator apparatus according to the present invention, there is provided a hydraulic system which raises / lowers a predetermined path of a hoistway and which is installed between a wall surface of the hoistway and an outer surface of the car to raise / lower the car. A counterweight that is installed at a position corresponding to the removal trace of the lifting mechanism, is arranged without overlapping the cage on the horizontal projection plane, and lifts up and down another predetermined path of the lifting path,
A main rope with both ends connected to a car and a counterweight, respectively, and a drive sheave around which the main rope is wound, are installed at positions corresponding to the removal marks of the hydraulic lifting mechanism in the hoistway, and a horizontal projection surface is provided. And a hoisting machine arranged without superimposing.

Further, in the elevator apparatus according to the present invention, the counterweight and the hoist are arranged at positions on the horizontal projection plane that do not overlap the removal trace position of the hydraulic lifting mechanism.

In the elevator apparatus according to the present invention, the hoist is installed on a machine table supported on the upper end of a counterweight guide rail that stands on the hoistway and guides the counterweight.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 and FIG.
FIG. 1 is a view showing an example of an embodiment of the present invention. FIG. 1 is a conceptual elevation view, and FIG. 2 is a plan view of FIG. In the drawing, reference numeral 1 denotes a hoistway, and 2 denotes a car, which is guided by a car guide rail 3 erected on the hoistway 1 to move up and down a predetermined route. 10
The hydraulic lifting mechanism shown in FIG. 3 is constituted by the hydraulic jack 4, the pulley 5, the pulley guide rail 6, and the main rope 7.

Reference numeral 19 denotes a counterweight, which is installed between the wall surface of the hoistway 1 and the outer surface of the car 2 and is installed at a position corresponding to the removal trace of the hydraulic elevating mechanism 10 in FIG. It is arranged without overlapping with 2 and is guided by the counterweight guide rail 20 erected on the hoistway 1 to move up and down another predetermined path.

Reference numeral 21 denotes a hoist, on which a drive sheave 22 is provided, which is mounted on a machine base 23 supported on the upper end of a counterweight guide rail 20 and is provided near the top in the hoistway 1. 3 is disposed at a position corresponding to the removal trace of the hydraulic lifting mechanism 10 in FIG. 3, and is arranged without overlapping with the car 2 on the horizontal projection plane.

Reference numeral 24 denotes a hoisting machine 21 pivotally mounted on a machine base 23.
Is a main rope, 25 is a main rope, one end of which is connected to the lower part of the car 2 and ascends, is wound around the deflector 24 and the drive sheave 22 and descends, and the other end is a counterweight. 19.

In the elevator apparatus configured as described above, when the hoist 21 is energized, the drive sheave 22 rotates and the main rope 25 is driven. Thereby, the main rope 25
, The car 2 and the counterweight 19 are moved up and down in opposite directions to each other.

When the hydraulic elevator is renewed, the above-mentioned drawing between the wall of the hoistway 1 and the outer surface of the car 2 is required when the elevator is renovated into a tow-type elevator excellent in terms of energy saving and lifting operation characteristics. Hydraulic lifting mechanism 10 in 3
, The counterweight 19, the hoisting machine 21, and the deflector wheel 24 are arranged without overlapping with the car 2 on the horizontal projection plane.

In such a configuration, repair work to the traction elevator is performed by diverting the essential equipment such as the car 2 and the car guide rail 3 of the hydraulic elevator to be updated. Therefore, renovation work costs can be reduced,
In addition, the repair work period can be shortened, and the inconvenience for elevator users can be reduced.

Further, a counterweight 19, a hoisting machine 21, and a deflector wheel 24 are arranged without overlapping with the car 2 on the horizontal projection plane. For this reason, the installation work of the hoisting machine 21 and the like can be performed in parallel with the removal work of the hydraulic lifting mechanism 10. For this reason, the repair work period can be shortened and the inconvenience for the user of the elevator can be reduced.

The interval W shown in FIG. 2 between the wall of the hoistway 1 and the outer surface of the car 2 is 40 cm to 60 cm. In addition, the frontage w dimension of the counterweight 19 shown in FIG. 2 is restricted due to the connection point between the car 2 and the main rope 25, and the depth d dimension of the counterweight 19 shown in FIG. It is set to the dimension used effectively.

Since the hoisting machine 21 and the deflecting wheel 24 are installed on the machine base 23 supported on the upper end of the counterweight guide rail 20, the supporting members such as the hoisting machine 21 are mounted on the wall surface side of the hoistway 1. There is no need to additionally provide. This can also reduce the cost of repair work and the period of repair work.

Further, by using a synthetic resin rope as the main rope 25, the diameter of the drive sheave 22 can be reduced. As a result, the hoisting machine 21 can be downsized, and the repair work cost and the repair work period can be reduced. Further, a hanging wheel is provided on the counterweight 19 and the main rope 25 is stretched by 2: 1 roping. Thus, the output torque of the hoisting machine 21 can be small, and the hoisting machine 21 can be downsized, so that the repair work cost and the repair work period can be reduced.

[0025]

As described above, according to the present invention, the lifting and lowering of the hydraulic lifting mechanism, which is installed between the wall of the hoistway and the outer surface of the car, and which lifts and drives the car, is performed. A balance weight that is installed at the position corresponding to the trace, is arranged without overlapping the car on the horizontal projection plane, and moves up and down another predetermined path of the hoistway, and a main rope connected at both ends to the car and the balance weight, respectively. A hoisting machine equipped with a drive sheave around which the main rope is wound, and installed at a position corresponding to the removal trace of the hydraulic elevating mechanism in the hoistway and arranged without overlapping the car on the horizontal projection plane. It is provided.

With such a configuration, repair work to the tow-type elevator is performed by diverting essential equipment such as a car and a car guide rail of the hydraulic elevator to be updated.
Therefore, there is an effect of reducing the cost of the repair work, and an effect of shortening the repair work period and reducing the inconvenience for the user of the elevator. Further, a counterweight and a hoist are arranged without overlapping the cage and the car on the horizontal projection plane.
For this reason, installation work of a hoisting machine etc. can be performed in parallel with removal work of the equipment of the hydraulic elevator to be updated. The repair work period can be shortened by the installation work process in parallel with the removal work, which has the effect of reducing the inconvenience for elevator users.

Further, as described above, the balance weight and the hoist are arranged at a position on the horizontal projection plane where the removal position of the hydraulic lifting mechanism does not overlap.

Thus, the counterweight and the hoist are arranged without overlapping the car on the horizontal projection plane, and the counterweight and the hoist are arranged at a position where the counterweight and the hoist do not overlap with the position of the hydraulic lifting mechanism. For this reason, installation work of a hoist etc. can be performed in parallel with the removal work of the hydraulic lifting mechanism of the hydraulic elevator to be updated. Therefore, there is an effect that the period of the repair work can be shortened and the inconvenience for the user of the elevator is reduced.

Further, as described above, the present invention is such that the hoisting machine is installed on the machine table supported on the upper end of the counterweight guide rail which is erected on the hoistway and guides the counterweight. .

With this, the hoist is installed on the machine base supported on the upper end of the counterweight guide rail.
There is no need to additionally provide a support member for the hoist on the wall surface side of the hoistway. This has the effect of reducing the cost of repair work, and also has the effect of shortening the repair work period and reducing the inconvenience of elevator users.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is an elevational view conceptually shown.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view showing a conventional hydraulic elevator.

FIG. 4 is a perspective view showing a conventional towed elevator.

[Explanation of symbols]

1 hoistway, 2 cars, 10 hydraulic lifting mechanism, 1
9 counterweight, 20 counterweight guide rails,
21 hoisting machine, 22 drive sheave, 23 machine stand, 2
5 Main rope.

Claims (3)

[Claims] 1. A hoistway, which moves up and down a predetermined path, and is installed between a wall surface of the hoistway and an outer surface of the car at a position corresponding to a removal mark of a hydraulic elevating mechanism that drives the car up and down. A balance weight which is arranged on the horizontal projection plane without overlapping with the car and which moves up and down another predetermined path of the hoistway, and a main rope having both ends connected to the car and the balance weight, respectively, A hoisting machine equipped with a drive sheave on which a rope is wound, and installed in the hoistway at a position corresponding to the removal trace of the hydraulic elevating mechanism and arranged on the horizontal projection plane without overlapping with the car. Equipped elevator equipment. 2. The elevator apparatus according to claim 1, wherein the counterweight and the hoist are arranged on the horizontal projection plane so as not to overlap with the position where the hydraulic lifting mechanism is removed. 3. The machine according to claim 1, wherein the hoist is mounted on a machine base supported on an upper end of a counterweight guide rail that is erected on the hoistway and guides the counterweight. 3. The elevator apparatus according to any one of 2.