JP2016079010A - Method for repairing elevator without machinery room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for repairing an elevator without a machinery room, with which a hoist can be installed whose mounting dimensions and external dimensions are different from the dimensions before repair, while utilizing many devices.SOLUTION: In a method for repairing an elevator without a machinery room, after removing a balance weight return wheel 15 from an upper support body 13, a new hoist 21 having a drive sheave 23 is mounted to the upper support body. Further, a new car suspension sheave device 31 having first and second car suspension sheaves 33a and 33b is mounted to a car 1. The first and second car suspension sheaves 33a and 33b of the new car suspension sheave device 31, when viewed from directly above the car 1, are disposed on a straight line which is inclined versus a straight line connecting first and second car guide rails 8a and 8b.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an existing machine room-less elevator in which a hoisting machine is installed in the lower part of the hoistway, and a machine room-less elevator in which the hoisting machine is installed in an upper part in the hoistway. It relates to the elevator repair 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, so the hoisting machine with the same mounting dimensions and outer dimensions as the hoisting machine before the refurbishment is placed in the same position as before 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. A machine room in which a hoisting machine having a mounting size and an external dimension different from those before renovation can be installed while diverting many devices. The purpose is to obtain a repair method for a Les Elevator.

  The machine room-less elevator refurbishment method according to the present invention includes a car, a counterweight, a car and a suspension for suspending the counterweight, installed in the lower part of the hoistway, and the car and the counterweight are moved up and down via the hanger. Machine room-less equipped with an existing hoisting machine that moves in the direction, an upper support installed in the upper part of the hoistway, and an upper return wheel that is provided on the upper support and on which a suspension is wound A machine room-less elevator refurbishment method for refurbishing the elevator, which includes removing the upper return wheel from the upper support, removing the return wheel, and installing a new hoist with a drive sheave on the upper support. And a car suspension device attaching step for attaching a new car suspension device having first and second car suspension vehicles to the car, and the first and second car suspension vehicles of the new car suspension device are When I look at the basket from directly above To be arranged on a straight line which is inclined with respect to a straight line connecting the first and second car guide rails for guiding the car.

  According to the machine room-less elevator repair method according to the present invention, the upper return wheel is removed from the upper support in the upper part of the hoistway, and a new hoisting machine is installed on the upper support. However, it is possible to install a hoisting machine whose mounting dimensions and external dimensions are different from those before the repair.

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 attachment structure of the new car suspension vehicle apparatus of FIG. FIG. 5 is a schematic cross-sectional view taken along line VIII-VIII in FIG. 4. It is a schematic perspective view which shows the modification of the support structure of the new winding machine of FIG. It is a schematic top view which shows the elevator after renovation repaired with the repair method of the machine room less elevator by Embodiment 2 of this invention. It is a schematic perspective view which shows the support structure of the winding machine of FIG. It is a general | schematic perspective view which shows the attachment structure of the elevator car suspension apparatus of the elevator after renovation by the refurbishment method of the machine room less elevator by Embodiment 3 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. As the suspended body 3, a plurality of ropes or a plurality of belts are used. In FIG. 1, the suspended body 3 is omitted.

  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 and 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 of the hoistway 4, that is, in a pit in the hoistway 4. The hoisting machine 5 moves the car 1 and the counterweight 2 in the vertical direction via the suspended 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 suspended body 3 is wound around the drive sheave 7.

  Further, as the hoisting machine 5, a body hoisting machine having an axial dimension larger than a dimension in a direction perpendicular to the axial direction is used. Further, 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 on the opposite side of the two corners of the rear part of the car 1 from the side where the counterweight 2 is approached so that most of the hoisting machine 5 overlaps with the car 1 when viewed from directly above. It is arranged directly under the corner. However, the drawer portion of the suspended body 3 of the drive sheave 7 does not overlap with the car 1 when viewed from directly above.

  In the hoistway 4, the first and second car guide rails 8 a and 8 b that guide the vertical movement of the car 1, and the first and second that guide the vertical movement of the counterweight 2. The counterweight guide rails 9a and 9b are installed. The car guide rails 8a and 8b are arranged on both sides of the car 1 at an intermediate portion of the car 1 in the front-rear direction (vertical direction in FIG. 1). The car guide rails 8a and 8b are arranged such that the direction of the straight line connecting the car guide rails 8a and 8b coincides with the width direction of the car 1 when viewed from directly above.

  At the lower part of the car 1, first and second car suspension cars 11a and 11b, which are existing car suspension cars, are provided. The car suspension wheels 11a and 11b are arranged apart from each other on a straight line parallel to a straight line connecting the car guide rails 8a and 8b when the car 1 is viewed from directly above. 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.

  As shown in FIG. 2, an upper support 13 is installed in the upper part of 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 are provided on the upper support 13 as upper return wheels, respectively.

  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 wheel 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.

  An unillustrated car side rope clamp is provided at a portion of the upper support 13 between the car guide rail 8a and the counterweight guide rail 9a. The first end of the suspended body 3 is connected to the car-side rope. A counterweight side rope clamp 16 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 suspended body 3 is connected to the counterweight side rope clamp 16.

  From the first end, the suspension body 3 includes a first car suspension car 11a, a second car suspension car 11b, a car return wheel 14, a drive sheave 7, a counterweight return car 15, and a counterweight suspension car 12. In order, and reaches the second end. That is, the elevator shown in FIGS. 1 and 2 is a 2: 1 roping elevator.

  The car 1 has a car frame 17 and a car body 18 supported by the car frame 17. As shown in FIG. 2, the car frame 17 includes a lower frame 17 a that receives the car body 18 from below, an upper frame 17 b that is disposed above the car body 18, and lower frames 17 a on both sides in the width direction of the car body 18. And a pair of vertical frames 17c that connect the first and second car guide rails 8a and 8b and connect the upper frame 17b. The first and second car suspension wheels 11a and 11b are provided on the lower frame 17a. A car doorway that is opened and closed by a pair of car doors is provided in front of the car body 18. The car floor 18a of the car body 18 is placed on the lower frame 17a.

  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 upper support 13 has first to fourth upper beams 13a to 13d arranged horizontally. The first and second upper beams 13 a and 13 b are arranged in parallel to the width direction of the car 1, and the third and fourth upper beams 13 c and 13 d are arranged perpendicular to the width direction of the car 1. A third upper beam 13c is fixed to the first car guide rail 8a, and a fourth upper beam 13d is fixed to the second car guide rail 8b. The first and second upper beams 13a and 13b are fixed to the third and fourth upper beams 13c and 13d, respectively, in a state of being arranged between the third and fourth upper beams 13c and 13d. Yes. The first and second upper beams 13a and 13b are arranged at a distance from each other in the depth direction of the car 1 which is perpendicular to the width direction of the car 1 and is horizontal.

  The cage side brace is provided on the third upper beam 13c, and the counterweight side brace 16 is provided on the first and second upper beams 13a and 13b. The car return wheel 14 is disposed below the fourth upper beam 13d. The counterweight return wheel 15 is supported by the first and second upper beams 13a and 13b, and the lower portion of the counterweight return wheel 15 is disposed in the space between the first and second upper beams 13a and 13b. ing.

  Next, a repair 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 Embodiment 1, the counterweight return wheel 15 is first removed from the upper support 13 (return wheel removal step). Thereafter, a new hoisting machine 21 is installed at the position where the counterweight return wheel 15 of the upper support 13 is attached (the hoisting machine installation process), and the new car suspension car device 31 is installed in the car 1. Attach (car suspension equipment installation process). Thereafter, the car 1 and the counterweight 2 are hung by the hanger 3 (hanging process).

  The new hoisting machine 21 is a thin hoisting machine whose axial dimension is smaller than the dimension perpendicular to the axial direction. 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 new hoisting machine 21 is arranged so that the rotation shaft of the drive sheave 23 is horizontal and perpendicular to the width direction of the car 1.

  In the hoisting machine installation process of this example, as can be seen by comparing FIG. 1 and FIG. 4, when the new hoisting machine 21 is viewed from directly above, the car 1 side of the suspended body 3 in the drive sheave 23 and The position of the drawer part to each of the counterweight 2 side is the part of the drawer to the car 1 side of the suspension body 3 and the counterweight 2 side of the counterweight wheel 15 before being removed from the upper support 13. Same position as. That is, in the hoisting machine installation process of this example, when the new hoisting machine 21 is viewed from directly above, the positions of the both ends of the driving sheave 23 in the width direction are the same as the both ends of the counterweight wheel 15 in the width direction. Same position as.

  FIG. 6 is a schematic perspective view showing a support structure of the new hoisting machine 21 shown in FIG. The hoisting machine main body 22 is supported on the second upper beam 13b, and the drive sheave 23 is disposed directly above the space between the first and second upper beams 13a and 13b. Thereby, the part pulled out from the drive sheave 23 of the suspension body 3 passes through the space between the first and second upper beams 13a and 13b.

  On the other hand, as shown in FIG. 4, the new car suspension device 31 includes a suspension vehicle frame 32 that is horizontally attached to the upper frame 17 b of the car 1, and first and second suspension vehicles 32 that are provided apart from each other on the suspension vehicle frame 32. Second car suspension wheels 33a and 33b are provided.

  The new suspension vehicle frame 32 is arranged to be inclined with respect to a straight line connecting the first and second car guide rails 8a and 8b when the car 1 is viewed from directly above. As a result, the new first and second car suspension wheels 33a and 33b are inclined with respect to a straight line connecting the first and second car guide rails 8a and 8b when the car 1 is viewed from directly above. Are arranged apart from each other on a straight line.

  The first car suspension wheel 33 a is provided at one end portion in the longitudinal direction of the suspension vehicle frame 32, and the second car suspension vehicle 33 b is provided at the other end portion in the longitudinal direction of the suspension vehicle frame 32. The first and second car suspension wheels 33a and 33b are arranged on opposite sides with respect to a straight line connecting the first and second car guide rails 8a and 8b when the car 1 is viewed from directly above. . Thus, the second car suspension wheel 33b when the car 1 is viewed from directly above is disposed at a position closer to the drive sheave 23 than the first car suspension wheel 33a. The rotation axes of the first and second car suspension wheels 33a and 33b are horizontal and parallel to each other. Further, the rotation axes of the first and second car suspension wheels 33a and 33b are inclined with respect to a straight line connecting the first and second car guide rails 8a and 8b when viewed from directly above. ing.

  FIG. 7 is a schematic perspective view showing the mounting structure of the new car suspension device 31 of FIG. FIG. 8 is a schematic sectional view taken along line VIII-VIII in FIG. The suspended vehicle frame 32 has a suspended vehicle frame lower beam 32a and a suspended vehicle frame upper beam 32b that sandwich the upper frame 17b of the car 1 from above and below. The suspension vehicle frame lower beam 32a is passed through the space between the upper frame 17b and the car body 18 and is in contact with the lower surface of the upper frame 17b. The suspension vehicle frame upper beam 32b is in contact with the upper surface of the upper frame 17b. The suspension car frame upper beam 32b is detachably fixed to the suspension car frame lower beam 32a. The suspended vehicle frame lower beam 32a and the suspended vehicle frame upper beam 32b are fixed to an intermediate portion of the upper frame 17b by fastening a plurality of bolts.

  The suspended body 3 has a new first car suspension wheel 33a, a new second car suspension wheel 33b, a new drive sheave 23, and a counterweight suspended from the first end connected to the car-side rope. The vehicle 12 is wound around in order and reaches the second end connected to the counterweight side rope stopper 16. That is, the elevators of FIGS. 4 and 5 are also 2: 1 roping type elevators.

  In the elevator after the repair, the position of the counterweight side brace 16 is the same as that before the repair, but the position of the car side brace has been changed from before the repair. In the elevator after the modification in this example, the position of the car side rope clamp provided on the third upper beam 13c is farther from the first counterweight guide rail 9a than the first car guide rail 8a. ing. Further, in the elevator after the modification in this example, not only the existing counterweight return car 15 but also the existing hoisting machine 5, the existing first and second car suspension cars 11a and 11b, and the existing car return car. 14 is also removed from the hoistway 4. Other configurations are the same as those before the repair, but may be replaced with new devices as necessary.

  In such a machine room-less elevator refurbishment method, the counterweight wheel 15 is removed from the upper support 13 in the upper part of the hoistway 4 and a new hoisting machine 21 is installed on the upper support 13. When the car suspension device 31 is attached to the car 1 and the car 1 is viewed from directly above, a new one is added on a straight line that is inclined with respect to the straight line connecting the first and second car guide rails 8a and 8b. Since the first and second car suspension cars 32a and 32b are arranged, the hoisting machine 21 having a different mounting dimension and external dimensions from those before the repair can be installed while diverting many devices. As a result, the repair work period can be shortened while using the latest hoisting machine 21. Further, by changing the positions of the first and second car suspension vehicles 32a and 32b from before the refurbishment, the car 1 and the fishing car without the suspension body 3 being wound around the car return wheel 14 and the counterweight return wheel 15. The weight 2 can be suspended by the suspension body 3. Thereby, the path | route of the suspension body 3 can be made simpler and shorter than before repair, and the lifetime improvement of the suspension body 3 and the reduction of cost can be aimed at.

  Further, since the new car suspension device 31 is attached to the upper frame 17b of the car 1, the car suspension device 31 can be easily attached to the car 1.

  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 thin hoisting machine is used as the new hoisting machine 21, the hoisting machine 21 can be easily installed in the space where the counterweight wheel 15 is installed.

  In FIG. 6, the hoisting machine 21 is directly installed on the second upper beam 13b. For example, as shown in FIG. 9, a pair of hoisting machines are provided between the first and second upper beams 13a and 13b. The machine bases 24a and 24b may be installed and the hoisting machine 21 may be installed on the hoisting machine bases 24a and 24b. That is, the hoisting machine 21 may be installed on the first and second upper beams 13a and 13b via the hoisting machine bases 24a and 24b. In this case, the load applied to the hoisting machine 21 is distributed and applied to the first and second upper beams 13a and 13b, and the stress generated in the first and second upper beams 13a and 13b is made close to before the repair. Can do.

Embodiment 2. FIG.
FIG. 10 is a schematic plan view showing an elevator after repair, which has been repaired by the machine room-less elevator repair method according to Embodiment 2 of the present invention. FIG. 11 is a schematic perspective view showing a support structure of the hoisting machine 21 shown in FIG. In the hoisting machine installation process of the present embodiment, when the new hoisting machine 21 is viewed from directly above, the position of the portion of the drive sheave 23 that is pulled out to the counterweight 2 side of the suspension body 3 is supported by the upper support. The position of the pull-out portion of the suspension body 3 to the counterweight 2 side of the counterweight 15 in the counterweight wheel 15 before being removed from the body 13 is the same as the position of the pull-out portion of the suspension body 3 to the car 1 side of the drive sheave 23. Is set to a position closer to the car 1 than the position of the drawer portion of the suspension body 3 to the car 1 side in the counterweight return wheel 15 before being removed from the upper support 13.

  In the elevator after the modification in this example, as shown in FIG. 11, the new hoisting machine 21 is mounted on the upper support body with the hoisting machine main body 22 laid between the first and second upper beams 13 a and 13 b. 13 is attached. Thus, the new hoisting machine 21 is arranged such that the rotation shaft of the drive sheave 23 is inclined horizontally and in the width direction of the car 1.

  The drive sheave 23 is disposed immediately above the second upper beam 13b. The portion of the suspension body 3 drawn downward from the drive sheave 23 toward the counterweight 2 passes through the space between the first and second upper beams 13a and 13b and goes from the drive sheave 23 toward the car 1. The portion of the suspended body 3 that is drawn downward passes through the space closer to the car 1 than the second upper beam 13b. Other procedures of the repair method for the machine room-less elevator and other configurations of the elevator after the repair are the same as those in the first embodiment.

  In such a machine room-less elevator renovation method, when a new hoisting machine 21 is installed on the upper support 13, the position of the portion of the drive sheave 23 that is pulled out to the car 1 side of the suspended body 3 is supported by the upper support. Since the position is closer to the car 1 than the position of the drawer portion of the suspension body 3 to the car 1 side of the counterweight wheel 15 before being removed from the body 13, the suspension in the drive sheave 23 when viewed from directly above. The portion of the body 3 that is pulled out toward the car 1 can be brought closer to the second car suspension wheel 33b. Thereby, the stability of the suspended state of the car 1 by the suspended body 3 can be improved.

Embodiment 3 FIG.
FIG. 12 is a schematic perspective view showing the mounting structure of the elevator car suspension apparatus after repair, which has been repaired by the machine room-less elevator repair method according to Embodiment 3 of the present invention. On the lower surface of the car floor 18 a of the car body 18, a pair of car floor support frames 41 a and 41 b arranged apart from each other in the depth direction of the car 1 and an emergency arranged between the pair of car floor support frames 41 a and 41 b. A stop frame 42 is provided.

  One car floor support frame 41a is provided at the front end of the car floor 18a, and the other car floor support frame 41b is provided at the rear end of the car floor 18a. The pair of car floor support frames 41 a and 41 b are horizontally arranged along the width direction of the car 1.

  The emergency stop frame 42 is disposed on a straight line connecting the first and second car guide rails 8a and 8b when the car 1 is viewed from directly above. The emergency stop frame 42 is fixed to the lower frame 17a. Further, the emergency stop frame 42 is provided with an emergency stop device (not shown) that holds the first and second car guide rails 8a and 8b individually to stop the car 1. Each of the car floor support frames 41a and 41b, the emergency stop frame 42, and the emergency stop device are left as they are before the repair.

  In this example, the new car suspension device 31 is attached to the lower portion of the car 1. Specifically, in the suspension vehicle attachment process, a new car suspension device 31 is attached to each of the emergency stop frame 42 of the car 1 and each of the car floor support frames 41a and 41b by fastening bolts. In this example, the suspension vehicle frame 32 is not divided and is a single frame.

  In the elevator after the refurbishment, one end in the longitudinal direction of the suspension vehicle frame 32 is on the lower surface of one car floor support frame 41a, and the other end in the longitudinal direction of the suspension vehicle frame 32 is on the lower surface of the other car floor support frame 41b. Are respectively fixed to the lower surface of the emergency stop frame 42.

  When the car 1 is viewed from directly above, the suspended vehicle frame 32 is disposed to be inclined with respect to the car floor support frames 41a and 41b and the emergency stop frame 42, respectively. As a result, the new first and second car suspension wheels 33a and 33b are inclined with respect to a straight line connecting the first and second car guide rails 8a and 8b when the car 1 is viewed from directly above. Are arranged apart from each other on a straight line.

  The first car suspension wheel 33 a is provided at one end portion in the longitudinal direction of the suspension vehicle frame 32, and the second car suspension vehicle 33 b is provided at the other end portion in the longitudinal direction of the suspension vehicle frame 32. The first and second car suspension wheels 33a and 33b are arranged on opposite sides with respect to a straight line connecting the first and second car guide rails 8a and 8b when the car 1 is viewed from directly above. . Thus, the second car suspension wheel 33b when the car 1 is viewed from directly above is disposed at a position closer to the drive sheave 23 than the first car suspension wheel 33a. The rotation axes of the first and second car suspension wheels 33a and 33b are horizontal and parallel to each other. Further, the rotation axes of the first and second car suspension wheels 33a and 33b are inclined with respect to a straight line connecting the first and second car guide rails 8a and 8b when viewed from directly above. ing. Other procedures of the repair method for the machine room-less elevator and other configurations of the elevator after the repair are the same as those in the first embodiment.

  In such a machine room-less elevator renovation method, a new car suspension device 31 is attached to each of the car floor support frames 41a and 41b and the emergency stop frame 42 of the car 1, so that the new car suspension device 31 is attached to the car. 1 can be easily and firmly attached.

  In the above example, the new car suspension device 31 is attached to each of the car floor support frames 41a and 41b and the emergency stop frame 42. However, the car suspension vehicle is mounted only on the car floor support frames 41a and 41b. The device 31 may be attached, or the car suspension device 31 may be attached only to the emergency stop frame 42. In this case, the trouble of attaching the new car suspension device 31 to the car 1 can be reduced.

  In each of the above embodiments, the existing hoisting machine 5, the existing first and second car suspension vehicles 11a and 11b, and the existing car return wheel 14 are removed from the hoistway 4. The existing equipment is arranged at a position that does not interfere with the new hoisting machine 21 and the new car suspension car device 31, and therefore, in the elevator after the repair, the existing hoisting machine 5, the existing first and the second At least one of the two car suspension wheels 11a and 11b and the existing car return wheel 14 may be left as it is without being removed. In this way, it is possible to further reduce the time and effort of removing existing equipment and reduce waste.

  Further, in each of the above embodiments, the hoisting machine 21 is installed so that the drive sheave 23 faces the car 1 side, but the drive sheave 23 faces the opposite side of the car 1, i.e., hoisting. The hoisting machine 21 may be installed so that the machine main body 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.

  Furthermore, in each of the above embodiments, the counterweight return wheel 15 is replaced with a new hoisting machine 21. However, depending on the layout of the devices arranged in the upper part of the hoistway 4, the car return wheel 14 may be replaced with a new one. The hoisting machine 21 may be replaced. That is, after removing the car return wheel 14 from the upper support 13, a new hoisting machine 21 may be installed at a position of the upper support 13 where the car return wheel 14 is attached. Moreover, in each said embodiment, although the trunk length hoisting machine was shown as the existing hoisting machine 5, the existing hoisting machine may be a thin hoisting machine.

  Further, the configuration of the third embodiment in which a new car suspension vehicle device 31 is attached to the lower part of the car 1, and the position of the portion of the drive sheave 23 that is pulled out of the suspension body 3 toward the car 1 is counterweighted before repair. The present invention may be applied to the configuration in the second embodiment that is closer to the car 1 than the car 15.

  1 car, 2 counterweight, 3 suspension, 4 hoistway, 5 existing hoist, 7 drive sheave, 8a first car guide rail, 8b second car guide rail, 13 upper support, 15 fishing Combined weight return wheel (upper return wheel), 17b upper frame, 21 new hoist, 23 drive sheave, 31 new car suspension device, 33a first car suspension vehicle, 33b second car suspension vehicle, 41a 41b Car floor support frame, 42 Emergency stop frame.

Claims (5)

A cage, a counterweight, a suspension for suspending the cage and the counterweight, and an existing winding installed at the lower part of the hoistway to move the cage and the counterweight in the vertical direction via the suspension A machine room-less elevator provided with an upper machine, an upper support installed at an upper part in the hoistway, and an upper return wheel provided on the upper support and around which the suspension is wound. A method for repairing a machine room-less elevator,
Return wheel removal step of removing the upper return wheel from the upper support,
After the return wheel removing step, a hoisting machine installation step of installing a new hoisting machine having a drive sheave on the upper support, and a new car hoisting vehicle device having first and second car hoisting vehicles, A car suspension device installation process to be attached to the car,
The first and second car suspension cars of the new car suspension system are straight lines connecting the first and second car guide rails that guide the car when the car is viewed from directly above. A method of repairing a machine room-less elevator arranged on a straight line inclined with respect to the machine.   In the hoisting machine installation step, when the new hoisting machine is viewed from directly above, the position of the drawer portion of the suspension body in the drive sheave is removed from the upper support body before the upper return wheel. The method for repairing a machine room-less elevator according to claim 1, wherein the position is the same as the position of the drawer portion of the suspension body.   In the hoisting machine installation step, when the new hoisting machine is viewed from directly above, the position of the pull-out portion of the suspension body to the counterweight side in the drive sheave is removed from the upper support. The position of the drawer portion of the suspension body toward the cage side of the drive sheave is set to be the same as the position of the drawer portion of the suspension body toward the counterweight before the upper return wheel. The machine room-less elevator refurbishing method according to claim 1, wherein a position closer to the car than a position of a drawer portion of the hanging body toward the car in the upper return wheel before being removed from the car is set.   The method for repairing a machine room-less elevator according to any one of claims 1 to 3, wherein, in the car suspension device installation step, the new car suspension device is attached to an upper frame of the car.   In the said car suspension apparatus installation process, The said new car suspension apparatus is attached to at least any one of the emergency stop frame of the said cage | basket | car, and the cage floor support frame of the said cage | basket. The machine room-less elevator repair method described.

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