JP6270635B2 - Renovation method of machine room less elevator - Google Patents

Description

  The present invention is a modification of an elevator in which an existing machine room-less elevator in which a hoisting machine is installed in the lower part of the hoistway is replaced with a machine room-less elevator in which the hoisting machine is installed in the upper part of the hoistway. It is about the method.

  In the conventional elevator repair method, a car suspension car is attached to the upper part of an existing car, and a counterweight suspension car is attached to the upper part of an existing counterweight. Also, the hoisting machine is removed from the machine base installed in the machine room. Then, a new hoisting machine and an end bracket are installed on the machine base. Thereafter, the main rope is wound around the hoisting machine, the car suspension car, and the counterweight suspension car, and both ends of the main rope are connected to the end bracket (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2001-220078

  In the repair of an elevator having a machine room as described above, since a new hoisting machine is installed on an existing machine base, it is relatively easy to change the mounting dimensions and the outer dimensions of the hoisting machine. On the other hand, in conventional machine room-less elevators, restrictions on the dimensions in the hoistway are severe. It was installed. In addition, when installing a hoisting machine whose mounting dimensions and external dimensions are different from those before the repair, a construction method in which all the devices in the hoistway are removed and newly installed is taken, and the repair work period is considerably long.

The present invention has been made to solve the above-described problems, and without changing the layout of the car and the counterweight while changing the installation location of the hoisting machine from the lower part to the upper part in the hoistway. can be dispensed, this makes it possible to divert a lot of equipment, and to obtain a repair method of a machine room-less elevator can shorten the construction period.

The machine room-less elevator repair method according to the present invention includes a car, first and second car suspension cars provided in the car, a counterweight, and a counterweight suspended in the counterweight. Installed in the car, the existing hoisting machine that moves up and down the car and the counterweight, the upper support installed in the upper part of the hoistway, and the upper support Car return car and counterweight return car, first car suspension car, second car suspension car, car return car, drive sheave of existing hoist, counterweight return car, and counterweight An existing suspension that is wound around a suspension car and suspends a car and a counterweight, and an existing cage suspension that is provided on the upper support and to which the first end of the suspension is connected The body connecting part and the upper support are provided so that the second end of the suspension A method of repairing a machine room-less elevator equipped with an existing counterweight-side suspension connecting portion that is installed, and when viewed from directly above, the existing cage-side suspension connecting portion and the existing counterweight-side A process of installing a new hoisting machine on the upper support between one side of the car and the hoistway wall facing it so that the modified suspension passes through the area between the suspension connection , A process of installing the car-side suspension connecting part after the renovation and the counterweight-side suspension connecting part after the renovation in the hoistway, and the second car suspension car and the first car hanging after the rehabilitation. Wrap it around the car, the drive sheave of the new hoisting machine, and the counterweight suspension car, and connect the first end of the modified suspension to the car-side suspension connection after the modification. look including the step of connecting each of the counterweight-side suspension body connecting portion after renovation and new hoisting machine, the axial dimension There is a small flat type hoist than perpendicular dimension in the axial direction.

The machine room-less elevator refurbishment method according to the present invention is such that the rehabilitated suspension passes through the region between the existing car-side suspension connecting portion and the existing counterweight-side suspension connecting portion as viewed from directly above. , in between the one side and the hoistway wall opposed thereto of the car, since established the new hoist is thin hoisting machine in the upper support, the location of the hoisting machine hoistway It is possible to change the layout of the car and the counterweight while changing from the lower part to the upper part, thereby diverting a lot of equipment and shortening the construction period .

1 is a schematic plan view showing a machine room-less elevator before repair according to Embodiment 1 of the present invention. It is a schematic front view which shows the machine room less elevator of FIG. FIG. 3 is a schematic perspective view showing a support structure for the car return wheel and the counterweight return wheel of FIG. 2. It is a schematic plan view which shows the state after repair of the machine room less elevator of FIG. It is a schematic front view which shows the machine room less elevator of FIG. It is a schematic perspective view which shows the support structure of the new winding machine of FIG. It is a schematic perspective view which shows the fixed state of the cage side suspension body connection part after the repair of FIG. It is a schematic perspective view which shows the fixed state of the counterweight side suspension body connection part after the repair of FIG. It is a schematic top view which shows the machine room less elevator after the repair by Embodiment 2 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a schematic plan view showing a machine room-less elevator before refurbishing according to Embodiment 1 of the present invention, and FIG. 2 is a schematic front view showing the machine room-less elevator shown in FIG. In the figure, a car 1 and a counterweight 2 are suspended in a hoistway 4 by a suspension body 3 (not shown in FIG. 1). As the suspension body 3, a plurality of ropes or a plurality of belts are used.

  The counterweight 2 is arranged behind the car 1 when viewed from the landing so as to face the back of the car 1 when positioned at the same height as the car 1. Further, the counterweight 2 is arranged close to one side (right side in FIG. 1) with respect to the center in the width direction (left-right direction in FIG. 1) of the car 1 when viewed from directly above.

  A hoisting machine 5 which is an existing hoisting machine is installed in a lower part (pit) in the hoistway 4. The hoisting machine 5 raises and lowers the car 1 and the counterweight 2 through the suspension body 3. The hoisting machine 5 has a hoisting machine body 6 and a drive sheave 7. The hoisting machine main body 6 includes a motor that rotates the drive sheave 7 and a brake that brakes the rotation of the drive sheave 7. The suspension body 3 is wound around the drive sheave 7.

  Further, as the hoisting machine 5, a trunk hoisting machine having an axial dimension larger than a dimension in a direction perpendicular to the axial direction is used. Furthermore, the hoisting machine 5 is arranged such that its axis is inclined with respect to the center line in the width direction of the car 1 when viewed from directly above.

  The hoisting machine 5 is arranged directly below the corner opposite to the side where the counterweight 2 of the rear part of the car 1 is approached so that most of the hoisting machine 5 overlaps with the car 1 when viewed from directly above. . However, the drawer portion of the suspension body 3 of the drive sheave 7 does not overlap with the car 1 when viewed from directly above.

  In the hoistway 4, first and second car guide rails 8 a and 8 b that guide the raising and lowering of the car 1, and first and second counterweight guide rails 9 a that guide the raising and lowering of the counterweight 2. 9b is installed. The car guide rails 8a and 8b are disposed on both sides of the car 1 at the middle part in the front-rear direction of the car 1 (vertical direction in FIG. 1).

  At the lower part of the car 1, first and second car suspension wheels 11a and 11b are provided. On the upper part of the counterweight 2, a counterweight suspension vehicle 12 is provided. The car suspension wheels 11 a and 11 b and the counterweight suspension vehicle 12 are arranged such that their rotation axes are horizontal and perpendicular to the width direction of the car 1.

  An upper support 13 (omitted in FIG. 1) is installed at the upper part (top) in the hoistway 4. The upper support 13 is supported by car guide rails 8a and 8b and counterweight guide rails 9a and 9b. A car return wheel 14 and a counterweight return wheel 15 as an upper return wheel are supported on the upper support 13.

  The car return wheel 14 is disposed between the drive sheave 7 and the second car suspension wheel 11b when viewed from directly above. In addition, the car return wheel 14 is arranged so that its rotation axis is horizontal and parallel to the width direction of the car 1.

  The counterweight return wheel 15 is disposed between the drive sheave 7 and the counterweight suspension vehicle 12 when viewed from directly above. In addition, the counterweight wheel 15 is arranged such that its rotation axis is horizontal and perpendicular to the width direction of the car 1.

  In the vicinity of the car guide rail 8 a of the upper support 13, an existing car-side suspension connection part (car-side leash) 16 a is provided. The first end of the suspension 3 is connected to the car-side suspension connection portion 16a. An existing counterweight-side suspension connection portion (counterweight-side rope clamp) 16b is provided at a portion of the upper support 13 between the counterweight wheel 15 and the counterweight guide rail 9a. . The second end of the suspension 3 is connected to the counterweight-side suspension connection portion 16b.

  The suspension body 3 includes, in order from the first end side, a first car suspension car 11a, a second car suspension car 11b, a car return wheel 14, a drive sheave 7, a counterweight return wheel 15, and a counterweight suspension. It is wrapped around the car 12. That is, the elevator shown in FIGS. 1 and 2 is a 2: 1 roping elevator.

  FIG. 3 is a schematic perspective view showing a support structure for the car return wheel 14 and the counterweight return wheel 15 of FIG. The car return wheel 14 is disposed below the upper support 13 in the vicinity of the car guide rail 8b. The upper support 13 has first and second return wheels 17a and 17b that are spaced apart from each other. The return wheel beams 17a and 17b are arranged parallel to the width direction of the car 1 and horizontally. The counterweight return wheel 15 is disposed between the return beams 17a and 17b.

  Next, a method for repairing the existing machine room-less elevator as described above will be described. 4 is a schematic plan view showing a state after the machine room-less elevator shown in FIG. 1 is repaired, and FIG. 5 is a schematic front view showing the machine room-less elevator shown in FIG. In the repair method of the first embodiment, when viewed from directly above, an area between the existing car-side suspension connection part 16a and the existing counterweight-side suspension connection part 16b (existing suspension connection part 16a, A new hoisting machine 21 is installed on the upper support 13 so that the rehabilitated suspension 26 passes through the straight region connecting 16b.

  Further, the existing suspension body 3, the existing hoisting machine 5, the car return wheel 14, the counterweight return wheel 15, and the existing suspension body connection portions 16a and 16b are removed.

  The new hoisting machine 21 is a thin hoisting machine whose axial dimension is smaller than the dimension perpendicular to the axial direction. Further, the new hoisting machine 21 has a hoisting machine main body 22 and a drive sheave 23. The hoisting machine body 22 includes a motor that rotates the drive sheave 23 and a brake that brakes the rotation of the drive sheave 23. The hoisting machine 21 is arranged so that the rotation shaft of the drive sheave 23 is horizontal and parallel or substantially parallel to the width direction of the car 1.

  Further, the hoisting machine 21 has a driving sheave 23 of the first car suspension vehicle 11a in the front-rear direction of the car 1 between one side surface of the car 1 and the hoistway wall facing the hoisting machine 21 as viewed from directly above. It arrange | positions so that it may be located back.

  The upper support 13 is provided with a car-side suspension connection part 24 after the repair and a counterweight-side suspension connection part 25 after the repair. The car-side suspension connection part 24 after the repair is installed at or near the installation position of the car return wheel 14. That is, the car-side suspension connection part 24 after the repair is installed directly above or in the vicinity of the second car suspension vehicle 11b.

  The counterweight-side suspension connecting portion 25 after the repair is installed at or near the installation position of the counterweight return wheel 15. In other words, the counterweight-side suspension connecting portion 25 after the repair is installed directly above or near the counterweight suspension vehicle 12.

  Thereafter, the suspended body 26 after the repair is wound around the second car suspension vehicle 11b, the first car suspension vehicle 11a, the drive sheave 23 of the new hoisting machine 21, and the counterweight suspension vehicle 12. Further, the first end portion of the modified suspension body 26 is connected to the car-side suspension connection portion 24 after the modification, and the second end portion is connected to the counterweight-side suspension connection portion 25 after the modification.

  FIG. 6 is a schematic perspective view showing a support structure for the new hoisting machine 21 shown in FIG. On the upper support 13, a pair of hoisting machine bases 27 a and 27 b are installed so as to cross over the car 1. The hoisting machine 21 is installed on the hoisting machine bases 27a and 27b so that the drive sheave 23 faces the car 1 side when viewed from directly above. Further, a support block 28 is interposed between the upper support 13 and the hoisting machine 21 as necessary.

  FIG. 7 is a schematic perspective view showing a fixed state of the car-side suspension connection part 24 after the modification shown in FIG. The car-side suspension connection part 24 after the repair is horizontally fixed on the upper support 13 near the second car guide rail 8b. Further, the car-side suspension connection part 24 is disposed behind the second car guide rail 8b in the front-rear direction of the car 1.

  FIG. 8 is a schematic perspective view showing a fixed state of the counterweight-side suspension connection part 25 after the modification of FIG. The counterweight-side suspension connecting portion 25 after the repair is horizontally installed on the first and second return wheels 17a and 17b. Other configurations are the same as those before the repair, but may be replaced with new devices as necessary.

  In such a repair method of the machine room-less elevator, as viewed from directly above, the suspended body after repairing the region between the existing car-side suspension connection part 16a and the existing counterweight-side suspension connection part 16b. Since a new hoisting machine 21 is installed on the upper support 13 so that 26 passes, it is possible to install the hoisting machine 21 whose mounting dimensions and external dimensions are different from those before the repair while diverting many devices. it can. As a result, the repair work period can be shortened while using the latest hoisting machine 21.

  Moreover, since the hoisting machine 21 can be arrange | positioned at the upper part in the hoistway 4, even if a pit is flooded, the hoisting machine 21 does not get wet.

  Furthermore, since the layout is less changed and the path of the suspension body 26 becomes simpler than before the repair, damage to the suspension body 26 can be reduced.

  Furthermore, since the thin hoisting machine is used as the new hoisting machine 21, the hoisting machine 21 can be easily installed in a limited space in the upper part of the hoistway 4.

Embodiment 2. FIG.
Next, FIG. 9 is a schematic plan view showing a machine room-less elevator after repair according to Embodiment 2 of the present invention. In the second embodiment, one of the drop positions of the suspension 26 after the repair from the drive sheave 23 of the new hoisting machine 21 is the rising position of the existing suspension 3 to the existing car-side suspension connection portion 16a. It is the same position or its vicinity. Further, the other of the drop positions of the suspension 26 after the repair from the drive sheave 23 of the new hoisting machine 21 is the same as the rising position of the existing suspension 3 to the existing counterweight-side suspension connection portion 16b. The position or its vicinity. In order to realize such a layout, the diameter of the drive sheave 23 is larger than that of the first embodiment. Other configurations and repair methods are the same as those in the first embodiment.

  As described above, the suspension body 26 is dropped from the drive sheave 23 of the new hoisting machine 21 by matching the position where the suspension body 26 is raised to the existing suspension body connection portions 16a and 16b. The amount of fall of 26 is almost the same as that before the repair, and the influence on the layout can be reduced.

  The car-side suspension connecting part 24 after the repair may be installed in the lower part of the hoistway 4 and the suspended body 26 after the repair may be wound around the existing car return wheel 14.

  Further, the car-side suspension connection part 24 after the repair is installed at or near the installation position of the existing counterweight return wheel 15 of the upper support 13, and the suspension 26 after the repair is installed in the car return car 14 and the existing installation. It is good also as a structure wound around the drive sheave 7 of the hoisting machine 5. In this case, in the upgraded elevator, the existing hoisting machine 5 does not generate a driving force, and the driving sheave 7 is used as a lower return wheel. At this time, by removing the coil portion of the existing hoisting machine 5 and eliminating the resistance, no extra load is applied even if the drive sheave 7 is used as a lower return wheel.

  Further, in the above example, the existing suspension body 3, the existing hoisting machine 5, the car return wheel 14 and the counterweight return wheel 15, and the existing suspension body connection portions 16a and 16b have been removed. If the equipment does not get in the way of the elevator, these devices may be left as they are without being removed. Thereby, waste can be reduced.

Furthermore, although it is preferable to use a new suspension body as the modified suspension body 26, the length of the existing suspension body 3 can be shortened and used as the modified suspension body 26.
Moreover, it is preferable to use a new suspension connection part as the suspension connection parts 24 and 25 after the modification, but the existing suspension connection parts 16a and 16b may be used as the suspension connection parts after the modification. Is possible.

  Further, in the above example, the hoisting machine 21 is installed so that the driving sheave 23 faces the car 1 side, but the driving sheave 23 faces the opposite side from the car 1, that is, the hoisting machine main body. The hoisting machine 21 may be installed so that 22 faces the car 1 side. In this case, maintenance and inspection of the hoisting machine main body 22 can be easily performed from the car 1.

  1 car, 2 counterweight, 3 existing suspension, 4 hoistway, 5 existing hoist, 11a first car suspension, 11b second car suspension, 12 counterweight suspension, 13 upper part Support, 14 car return wheel, 15 counterweight return car, 16a existing car side suspension connection part, 16b existing counterweight side suspension connection part, 21 new hoisting machine, 23 drive sheave, 24 repair Rear car side suspension connection part, 25 Balanced weight side suspension connection part after repair, 26 Suspension body after repair.

Claims (7)

Car and
First and second car suspension wheels provided in the car;
With a counterweight,
A counterweight suspension vehicle provided on the counterweight;
An existing hoisting machine that is installed in the lower part of the hoistway and raises and lowers the car and the counterweight;
An upper support installed at the upper part in the hoistway;
A basket return wheel and a counterweight return wheel provided on the upper support,
Wrapped around the first car suspension car, the second car suspension car, the car return car, the drive sheave of the existing hoist, the counterweight return car, and the counterweight suspension car An existing suspension for suspending the car and the counterweight;
An existing car-side suspension connecting portion provided on the upper support, to which a first end of the suspension is connected;
A method of repairing a machine room-less elevator provided on the upper support, and having an existing counterweight-side suspension connecting portion to which a second end of the suspension is connected,
When viewed from directly above , one side surface of the car so that the rehabilitated suspension passes through a region between the existing car-side suspension connection part and the existing counterweight-side suspension connection part. A step of installing a new hoisting machine on the upper support between the hoistway wall facing it ;
A step of installing a modified car-side suspension connecting portion and a modified counterweight-side suspension connecting portion in the hoistway; and the second suspended suspension vehicle, the first suspension A car suspension vehicle, a drive sheave of the new hoisting machine, and a counterweight suspension vehicle, and the first end portion of the modified suspension body is connected to the cage-side suspension body connection portion after the modification to, look including the step of connecting each of the second end to the counterweight side suspending body connecting portion after the renovation,
The new hoisting machine is a machine room-less elevator refurbishing method in which the axial dimension is a thin hoisting machine smaller than the dimension perpendicular to the axial direction .   2. The machine room-less elevator repair method according to claim 1, wherein the car-side suspension connection part after the repair is installed at or near the installation position of the car return wheel of the upper support.   2. The machine room-less elevator repair method according to claim 1, wherein the car-side suspension connecting portion after the repair is installed at a lower portion in the hoistway, and the suspension after the repair is wound around the return car.   The car-side suspension connection part after the modification is installed at or near the installation position of the counterweight return car on the upper support, and the suspension after the modification is installed on the car return car and the existing hoisting The method of repairing a machine room-less elevator according to claim 1, wherein the machine sheave is also wound around a drive sheave of the machine.   The machine room-less elevator repair method according to any one of claims 1 to 4, wherein the existing hoisting machine, the car return wheel, and the counterweight return wheel are left as they are after the repair. One of the drop positions of the suspension after the refurbishment from the drive sheave of the new hoist is at the same position as or near the rising position of the existing suspension to the existing car-side suspension connection part. Yes,
The other of the drop positions of the suspension after the repair from the drive sheave of the new hoisting machine is the same position as the rising position of the existing suspension to the existing counterweight-side suspension connection section or the position thereof The method of repairing a machine room-less elevator according to any one of claims 1 to 5, wherein the machine room-less elevator is in the vicinity. The hoist of the existing, the machine room less elevator according to any one of claims 1 to 6 axial dimension is larger cylinder length hoist than the size of the direction perpendicular to the axial direction Repair method.

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