JPWO2006033146A1 - Elevator equipment - Google Patents

Abstract

Even if the diameter of the hoisting machine increases, an elevator apparatus that can secure the hoisting machine maintenance space without increasing the installation space is obtained. A car 2, a counterweight 3, a drive sheave 4 on which a main rope 9 is hung, and a hoisting machine 5 that rotates the drive sheave are provided side by side with the drive sheave. A reverse pulley 6 having an axis parallel to the shaft and rotating in the opposite direction to the driving sheave, a first group of turn pulleys 8a, a second group of turn pulleys 8b, and a main rope that is a first group of main ropes 9a. And the second group main rope 9b. The first group main rope is hung from the first group turning pulley to the driving sheave, bent in the reverse direction and hung on the reverse pulley, and the second group main rope 9b. The main rope is hung from the second group of turning sheaves to the reverse sheave, bent in the opposite direction and hung on the driving sheave, and the first group main rope driving sheave to the reverse sheave A portion of the main rope of the group extending from the reverse pulley to the drive sheave intersects on the projection plane viewed from the axial direction of the drive sheave and the reverse pulley.

Description

  The present invention relates to a traction type elevator apparatus.

A conventional traction type elevator system with a machine room is installed so that the axis of the hoist is horizontal, and the main rope wound around the drive sheave extends vertically downward without passing the turning sheave from the drive sheave. A main rope extending from the opposite side of the driving sheave is hung on the turning pulley, and extends vertically downward from the turning pulley to suspend a counterweight.
In addition, when the hoisting machine is installed at the top of the hoistway in a traction type elevator device without a conventional machine room, for example, the hoisting machine is installed at the top of the hoistway so that the axis of the drive sheave is horizontal There is a structure in which the hoisting machine is installed on the top of the hoistway so that the axis of the driving sheave is in the vertical direction (for example, see Patent Document 1 and Patent Document 2).
In addition, as another conventional technique, at least a pair of driving sheaves with a motor that rotates in the opposite directions are attached to the car, and the car sheaves move relative to the rope while the driving sheave rotates during traveling. By doing so, there is a self-propelled elevator device in which the car moves vertically in the hoistway (see, for example, Patent Document 3).

Japanese Unexamined Patent Publication No. 2002-80178 Japanese Unexamined Patent Publication No. 2001-48450 Japan Special Table 2002-504473

In a traction type elevator apparatus, for example, when using a hoisting machine that uses a permanent magnet type synchronous motor, in order to reduce the amount of permanent magnets used, the motor shaft (width) direction is reduced and the diameter direction is increased. There is a need to. However, in a traction type elevator apparatus having a conventional machine room configured as described above, the height of the hoisting machine increases as the diameter of the motor increases, and the height of the machine room needs to be increased. was there.
If the hoisting machine is installed at the top of the hoistway so that the shaft of the driving sheave is horizontal in a traction type elevator device without a conventional machine room, the hoisting machine is installed on the hoistway ceiling. Since they are installed close to each other, it is necessary to increase the height dimension from the top floor to the hoistway ceiling when the diameter of the motor increases. Moreover, in order to install such a large hoisting machine above the car, a large installation space for the hoisting machine is required above the car. In addition, since the hoisting machine is installed above the car with the maintenance surface facing sideways, if you attempt to perform maintenance and inspection work on the hoisting machine on the car, it will be placed on the car next to the hoisting machine. There was a problem that working space could not be secured because of standing work.
In the case of a conventional traction type elevator device without a machine room where the hoisting machine is installed at the top of the hoistway so that the axis of the driving sheave is in the vertical direction, the main of the driving sheave and the turning sheave In order to prevent the main rope from entering the groove around which the rope is wound, it is necessary to secure a certain distance between the driving sheave and the turning sheave. The center has to be installed at a position deviated from the center of the car. When the diameter of the motor is increased, the hoisting machine and the hoistway wall interfere with each other or are too close.

  The present invention has been made to solve the above-mentioned problems, and it is necessary to expand the installation space of the machine room and the hoistway even if the diameter of the motor increases in order to make the motor of the hoisting machine thinner. In addition, an object of the present invention is to provide an elevator apparatus that can secure a sufficient maintenance space for the hoisting machine.

  An elevator apparatus according to the present invention includes a car suspended by a main rope and moving up and down in the hoistway, a counterweight suspended by the main rope and moving up and down in the hoistway in the opposite direction, and a drive rope on which the main rope is wound. A vehicle and a hoisting machine for moving a car and a counterweight up and down by rotating a driving sheave, arranged in parallel adjacent to the driving sheave, and having an axis parallel to the axis of the driving sheave A reverse rotation pulley that rotates in a direction opposite to the rotation direction of the drive sheave, a first group of rotation pulleys that are provided in addition to the reverse rotation pulley, and that includes at least one rotation pulley, and at least one rotation pulley The second group of turning pulleys and the main rope are each composed of the first group main rope and the second group main rope each consisting of at least one main rope, and the first group main rope is the first group One of the turning pulleys is wound around the drive sheave and wound around the drive sheave The main rope of the second group is wound around the reverse pulley from one of the second group of reverse pulleys so as to be bent in the direction opposite to the applied bending. A portion of the first group main rope extending from the drive sheave to the reverse direction pulley and the second group main rope are wound around the drive sheave so as to be bent in the opposite direction to the bending around the counter pulley. The portion extending from the reverse sheave to the drive sheave intersects on the projection plane viewed from the axial direction of the drive sheave and the reverse sheave.

  In the elevator apparatus of the present invention, the hoisting sheave of the hoisting machine having a horizontal rotating shaft is installed above the counterweight, and the reverse pulley is placed above the counterweight near the hoisting sheave of the hoisting machine. Since a turning pulley is provided above the car and a turning pulley is provided above the axis of the drive sheave and reverse pulley of the hoist, maintenance work can be performed from the side of the hoist while standing on the car. When you do, you can use the car as a wide maintenance space.

FIG. 1 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 1 of the present invention. FIG. 2 is a partial detailed view partially showing the elevator apparatus according to Embodiment 1 of the present invention. FIG. 3 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 2 of the present invention. 4 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 3 of the present invention. FIG. 5 is a schematic plan view showing a conceptual structure of an elevator apparatus according to Embodiment 4 of the present invention. 6 is a partial detail view partially showing an elevator apparatus according to Embodiment 4 of the present invention. FIG. 7 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 5 of the present invention. FIG. 8 is a front view seen from the direction B of FIG. FIG. 9 is a plan view seen from the direction C in FIG.

Explanation of symbols

1 hoistway 2 elevator car 3 counterweight 4 drive sheave (first drive sheave)
4a Drive sheave shaft 5 hoisting machine (first hoisting machine)
6 Reverse-direction pulley 6a Reverse-direction pulley shaft 7a One of the first group of turning pulleys installed on the car 7b One of the second group of turning pulleys installed on the car 7c One shaft 7d of one group of turning sheaves One shaft 8a of the second group of turning sheaves installed on the car 8b One of the first group of turning sheaves 8b One of the second group of turning sheaves 8c One axis of a group of turning pulleys
8d One shaft of the second group of turning pulleys
9a First group main rope 9b Second group main rope 10 Cage ascending direction 11 Counterweight descending direction 12 Drive sheave rotation direction 13 Reverse rotation pulley rotation direction 14a Counterweight turning diverter 14b Counterweight turning Pulley 15 Brake device 16 for reverse rotation pulley Second drive sheave 17 Second hoist 18 Rotation direction 19 of first drive sheave 19 Rotation direction of second drive sheave

  In the embodiment of the present invention, a traction type elevator apparatus having no machine room will be described as an example.

  FIG. 1 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a partial detail view partially showing the elevator apparatus according to Embodiment 1 of the present invention.

In FIG. 1, an elevator car 2 and a counterweight 3 are provided in a hoistway 1 so that the elevator car 2 and a counterweight 3 can be raised and lowered. At the top of the hoistway 1, a driving sheave 4 around which a main rope 9 for raising and lowering the car 2 and the counterweight 3 is wound, a hoisting machine 5 for rotating the driving sheave 4, and a driving leash A reverse rotation pulley 6 arranged adjacent to the vehicle 4 is provided so as to be positioned above the counterweight 3. Further, turning pulleys 7a and 7b installed immediately above the car 2 are provided at the top of the hoistway 1 with the shafts 7c and 7d being horizontal. Further, turning pulleys 8 a and 8 b are provided on the uppermost counterweight 3 side in the hoistway 1 above the shaft 4 a of the drive sheave 4 and the shaft 6 a of the reverse pulley 6. The shaft 4a of the drive sheave 4 and the shaft 6a of the reverse sheave 6 are installed directly above the counterweight 3 so as to be horizontal to each other, and the reverse sheave 6 rotates in the opposite direction to the drive sheave 4. .
And the main rope 9 which attaches one end to the car 2 and attaches the other end to the counterweight 3 and suspends the car 2 and the counterweight 3 is a main rope of the first group consisting of at least one main rope. 9a and the second group main rope 9b. The turning pulleys 7a and 8a are turning pulleys on which the first group of main ropes are hung, and constitute the first group of turning pulleys. The turning sheaves 7b and 8b are turning sheaves on which the second group of main ropes are hung, and constitute the second group of turning sheaves.
One end of the main rope 9a of the first group is attached to the left side of the upper part of the car 2 and a part of the car 2 is suspended, and the other end of the main rope 9a of the first group is attached to the right side of the upper part of the counterweight 3. It is attached and a part of the counterweight 3 is suspended. The main rope 9a of the first group starts from the left fixed portion to the upper part of the car 2 and is hung on a 7a which is one of the first group of turning pulleys on the left side immediately above the car 2. It is hung on 8a which is one of the 1st group turning sheaves installed in the upper part of 4 and the left side, and is inclined diagonally downward. Next, it is hung on the lower side of the drive sheave 4 and folded upward, and is hung on the upper side of the adjacent reverse pulley 6 and folded again downward. Then, a route to the right fixed portion at the top of the counterweight 3 is taken.
On the other hand, one end of the second group main rope 9b is attached to the right side of the upper part of the car 2 and suspends a part of the car 2, and the other end of the second group main rope 9b is the left side of the upper part of the counterweight 3. A part of the counterweight 3 is suspended by being attached to the part. The second group main rope 9b starts from the right fixed portion to the upper part of the car 2 and is hung on 7b, which is one of the second group of turning pulleys on the right side immediately above the car 2. 6 is hung on 8b which is one of the second group of turning sheaves installed on the right side and is directed obliquely downward. Next, it is hung on the lower side of the reverse pulley 6 and folded upward, and hung on the upper side of the adjacent drive sheave 4 and folded downward again. Then, a route to the left fixed portion at the top of the counterweight 3 is taken.
The main rope of the first group and the main rope of the second group intersect each other on the projection plane viewed from the axial direction in a portion extending from the driving sheave to the reverse pulley. Reference numeral 15 denotes a brake device provided not on the hoist 5 but on the reverse pulley 6.

  FIG. 2 is a partial detail view of FIG. 1 viewed from the direction A. As shown in FIG. 2, the first group main ropes 9a and the second group main ropes 9b are driven in an orderly manner without interfering with each other. It is wound around a sheave 4 and a reverse pulley 6.

  When the car 2 rises in the direction of ascending direction 10, the counterweight 3 descends in the direction of descending direction 11. At this time, the driving sheave 4 rotates in the direction of arrow 12, and the reverse pulley 6 moves in the direction of arrow 13. Rotate to.

  In FIG. 1, the hoisting machine 5 and the reverse rotation pulley 6 are installed above the counterweight 3, and only the turning pulleys 7 a and 7 b are installed above the car 2. The car 2 can be used widely as a maintenance space when performing maintenance work from the side of the hoisting machine 5. In order to reduce the amount of permanent magnets used in the motor of the hoisting machine, it is necessary to reduce the motor shaft (width) direction and increase the diameter direction. In this case, the hoisting machine is located above the car. Therefore, a large installation space is not required above the car, and the hoistway area can be reduced because the axial direction of the hoisting machine is small.

In FIG. 1, the hoisting machine 5 does not have a brake device, but the main rope groove of the reverse pulley 6 is a main rope groove that generates a frictional driving force equivalent to that of the drive sheave 4, and the brake device 15 is reversed. The structure is provided on the counter pulley 6. Accordingly, since the hoisting machine 5 does not have a brake device, the hoisting machine 5 can be reduced in size without being subjected to dimensional restrictions of the brake apparatus, and the brake apparatus 15 can be reduced in size without being subjected to dimensional restrictions of the hoisting machine 5. Is possible.
Further, since the hoisting machine 5, the reverse rotation pulley 6 and the brake device 15 are installed close to each other, it is possible to configure them integrally.

  In the first embodiment, the turning pulleys 7a and 7b, 8a, 8b, the driving sheave 4, the hoisting machine 5, the reverse turning pulley 6, and the brake device 15 are all installed inside the hoistway 1. It is also possible to adopt a configuration in which all or part of the machine room (not shown) provided adjacent to the hoistway is installed.

  In the first embodiment, the end of the first group main rope 9a and the end of the second group main rope 9b are directly attached to the car 2 and the counterweight 3. However, the car and the counterweight suspension part It is also possible to provide a suspension car (not shown) at the top, hang a main rope on the suspension car, turn it back, and fix the end of each main rope to the top of the hoistway or the machine room.

  In an elevator apparatus constructed in this way, a hoisting sheave of a hoisting machine having a horizontal shaft is installed above the counterweight, and a reverse sheave is adjacent to the hoisting sheave of the hoisting machine. When the maintenance work is performed from the side of the stand hoisting machine on the car because the turning pulley is provided above the car and the turning pulley is provided on the upper side of the hoisting machine and the reverse pulley. The top of the basket can be used widely as maintenance space.

  FIG. 3 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 2 of the present invention.

In FIG. 3, the same reference numerals as those in FIG. In the first embodiment, two turning pulleys 7 a and 7 b are installed on the upper portion of the car 2, whereas in this embodiment, one turning pulley 7 b is installed on the upper portion of the car 2. Others are the same as in the first embodiment.
The turning pulley 8a is a turning pulley on which the first group of main ropes is hung, and constitutes the first group of turning pulleys. The turning sheaves 7b and 8b are turning sheaves on which the second group of main ropes are hung, and constitute the second group of turning sheaves.
One end of the main rope 9a of the first group is attached to the left back side of the upper part of the car 2, and a part of the car 2 is suspended, and the other end of the main rope 9a of the first group is the right side of the upper part of the counterweight 3. A part of the counterweight 3 is suspended by being attached to the part. The main ropes 9a of the first group start from the left rear side fixing portion to the upper portion of the car 2, and are hung on the turning pulley 8a installed on the upper side and the left side of the driving sheave 4 and directed downward. Next, it is hung on the lower side of the drive sheave 4 and folded upward, and is hung on the upper side of the adjacent reverse pulley 6 and folded again downward. Then, a route to the right fixed portion at the top of the counterweight 3 is taken.
On the other hand, one end of the second group main rope 9b is attached to the right front side of the upper part of the car 2, and a part of the car 2 is suspended, and the other end of the second group main rope 9b is the upper part of the counterweight 3. A part of the counterweight 3 is suspended from the left side. The main rope 9b of the second group starts from the right front fixing portion to the upper part of the car 2 and is hung on 7b which is one of the second group of turning pulleys on the right side immediately above the car 2. It is hung on 8b which is one of the 2nd group turning pulleys installed in the upper part and right side of the pulley 6, and is turned below. Next, it is hung on the lower side of the reverse pulley 6 and folded upward, and hung on the upper side of the adjacent drive sheave 4 and folded downward again. Then, a route to the left fixed portion at the top of the counterweight 3 is taken.
The main rope of the first group and the main rope of the second group intersect each other on the projection plane viewed from the axial direction in a portion extending from the driving sheave to the reverse pulley.
Even with such a configuration, the same effect can be obtained with less turning pulleys than in the first embodiment.

  4 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 3 of the present invention.

In FIG. 4, the traction type elevator apparatus is provided with an elevator car 2 and a counterweight 3 in a hoistway 1 that can be raised and lowered. At the top of the hoistway 1, a driving sheave 4 around which a main rope 9 for raising and lowering the car 2 and the counterweight 3 is wound, a hoisting machine 5 for rotating the driving sheave 4, and a driving leash A reverse rotation pulley 6 arranged adjacent to the vehicle 4 is provided so as to be positioned above the counterweight 3. Further, turning sheaves 8a and 8b are provided above the shaft 4a of the driving sheave 4 and the shaft 6a of the reversing sheave 6 with the shafts 8c and 8d being horizontal. The shaft 4a of the drive sheave 4 and the shaft 6a of the reverse sheave 6 are installed directly above the counterweight 3 so as to be horizontal to each other, and the reverse sheave 6 rotates in the opposite direction to the drive sheave 4. . And the main rope 9 which attaches one end to the car 2 and attaches the other end to the counterweight 3 and suspends the car 2 and the counterweight 3 is a main rope of the first group consisting of at least one main rope. 9a and the second group main rope 9b. The turning pulley 8a is a turning pulley on which the first group of main ropes is hung, and constitutes the first group of turning pulleys. The turning pulley 8b is a turning pulley on which a second group of main ropes is hung, and constitutes a second group of turning pulleys.
One end of the main rope 9a of the first group is attached to the left side of the upper part of the car 2 and a part of the car 2 is suspended, and the other end of the main rope 9a of the first group is attached to the right side of the upper part of the counterweight 3. It is attached and a part of the counterweight 3 is suspended. The main ropes 9a of the first group start from the left fixed portion to the upper portion of the car 2, and are hung on the turning pulley 8a installed on the upper side of the driving sheave 4 and on the left side and directed downward. Next, it is hung on the lower side of the drive sheave 4 and folded upward, and is hung on the upper side of the adjacent reverse pulley 6 and folded again downward. Then, a route to the right fixed portion at the top of the counterweight 3 is taken.
On the other hand, one end of the second group main rope 9b is attached to the right side of the upper part of the car 2 and suspends a part of the car 2, and the other end of the second group main rope 9b is the left side of the upper part of the counterweight 3. A part of the counterweight 3 is suspended by being attached to the part. The main rope 9b of the second group starts from the right side fixing portion to the upper part of the car 2, and is hung on the turning pulley 8b installed on the upper side of the reverse turning pulley 6 and directed downward. Next, it is hung on the lower side of the reverse pulley 6 and folded upward, and hung on the upper side of the adjacent drive sheave 4 and folded downward again. Then, a route to the left fixed portion at the top of the counterweight 3 is taken.
The main rope of the first group and the main rope of the second group intersect each other on the projection plane viewed from the axial direction in a portion extending from the driving sheave to the reverse pulley. The brake device is built in the hoist 5.
When the car 2 rises in the direction of ascending direction 10, the counterweight 3 descends in the direction of descending direction 11. At this time, the driving sheave 4 rotates in the direction of arrow 12, and the reverse pulley 6 moves in the direction of arrow 13. Rotate to.
Although the same effect as Example 1 is given, the main rope 9 cannot suspend the center of gravity of the car and suspends the rear end of the car 2 unless the turning pulleys 8a and 8b having extremely large diameters are used. . For this reason, the third embodiment is suitable for an elevator having a smaller floor area (smaller loading capacity) than an elevator having a larger floor area of the car, and can be configured with a turning pulley smaller than the first embodiment.

  FIG. 5 is a schematic plan view showing a conceptual structure of an elevator apparatus according to Embodiment 4 of the present invention, and FIG. 6 is a partial detailed view partially showing the elevator apparatus according to Embodiment 4 of the present invention.

In FIG. 5, an elevator car 2 and a counterweight 3 are provided in a hoistway 1 so that the elevator car 2 and a counterweight 3 can be raised and lowered. A first driving sheave 4 around which a main rope 9 for raising and lowering the car 2 and the counterweight 3 is wound, is juxtaposed adjacent to the driving sheave 4 at the top of the hoistway 1. 2 and the second driving sheave 16 on which the main rope 9 for raising and lowering the counterweight 3 is wound, the first hoisting machine 5 for rotating the first driving sheave 4, and this first winding A second hoisting machine 17 is provided adjacent to the upper machine 5 and for rotating the second driving sheave 16 so as to be positioned above the car 2. A pair of left and right turning sheaves 7 a and 7 b installed immediately above the car 2 are provided at the top of the hoistway 1. Furthermore, a pair of right and left counterweight pulleys 14a and 14b installed at the uppermost part of the hoistway 1 are provided immediately above the counterweight 3. In the first hoisting machine 5 and the second hoisting machine 17, the axis of the first driving sheave 4 and the axis of the second driving sheave 16 are vertically above the car 2 in the hoistway 1. The second drive sheave 16 rotates in the opposite direction to the first drive sheave 4.
And the main rope 9 which attaches one end to the car 2 and attaches the other end to the counterweight 3 and suspends the car 2 and the counterweight 3 is a main rope of the first group consisting of at least one main rope. 9a and a second group main rope 9b.
The turning sheaves 7a and 14a are turning sheaves on which the first group of main ropes are hung, and constitute the first group of turning sheaves. The turning sheaves 7b and 14b are turning sheaves on which the second group of main ropes are hung, and constitute the second group of turning sheaves.
One end of the main rope 9a of the first group is attached to the left side of the upper part of the car 2 and a part of the car 2 is suspended, and the other end of the main rope 9a of the first group is attached to the right side of the upper part of the counterweight 3. It is attached and a part of the counterweight 3 is suspended. The main rope 9a of the first group starts from the left fixed portion to the upper part of the car 2 and is hung on the left car turning pulley 7a immediately above the car 2, and toward the first driving sheave 4 Directed horizontally. Next, it is hung horizontally on the first driving sheave 4 and folded back, and is hung horizontally on the second driving sheave 16 that is juxtaposed in parallel with the bending direction of the driving sheave 4. It is folded back in the direction. Then, it is hung on the right-hand counterweight pulley 14a directly above the counterweight 3 and hangs down to take a route to the right-side fixed part above the counterweight 3.
On the other hand, one end of the second group main rope 9b is attached to the right side of the upper part of the car 2 and suspends a part of the car 2, and the other end of the second group main rope 9b is the left side of the upper part of the counterweight 3. A part of the counterweight 3 is suspended by being attached to the part. The main rope 9b of the second group starts from the right fixing portion to the upper portion of the car 2 and is hung on the right car turning pulley 7b immediately above the car 2, and toward the second driving sheave 16. Directed horizontally. Next, the second drive sheave 16 is hung horizontally and folded back, and is horizontally hung on the adjacent first drive sheave 4 and bent in the second drive sheave 16. It is folded back in the opposite direction. Then, it is hung from the counterweight pulley 14b on the left side directly above the counterweight 3 and hangs down to take a path to the left fixed portion on the upper side of the counterweight 3. The main rope of the first group and the main rope of the second group intersect each other on the projection plane viewed from the axial direction in a portion extending from the driving sheave to the reverse pulley.

  FIG. 6 is a partial detailed view of FIG. 5, and as shown in FIG. 6, the first group of main ropes 9a and the second group of main ropes 9b are arranged in order without interfering with each other. 4 and the second drive sheave 16 are wound around.

  When the car 2 is raised, the counterweight 3 is lowered. At this time, the first drive sheave 4 rotates in the direction of the arrow 18, and the second drive sheave 16 rotates in the direction of the arrow 19.

  In FIG. 5, the first hoisting machine 5 and the second hoisting machine 17 are installed above the car 2 in the hoistway. However, since two hoisting machines are provided, The size of the upper machine can be reduced, and the installation space does not have to be increased. Moreover, even if the hoisting machine is installed in the center of the hoistway flat area, it is possible to hang the main rope without difficulty.

  In the fourth embodiment, the second hoisting machine 17 is provided in addition to the first hoisting machine 5. However, instead of the second hoisting machine 17, a reverse pulley is provided in the same manner as in the first embodiment. It is also possible.

  Further, the turning pulleys 7a and 7b, the weight turning pulleys 14a and 14b, the first driving sheave 4 and the first hoisting machine 5, the second driving sheave 16 and the second hoisting machine 17 are connected to the hoistway. Although it is set as the structure installed in 1 inside, it is also possible to set it as the structure which installs all or one part in the machine room (not shown) provided adjacent to the hoistway.

  In the fourth embodiment, the end of the first group main rope 9a and the end of the second group main rope 9b are directly attached to the car 2 and the counterweight 3. However, the car and the counterweight suspension part It is also possible to provide a suspension car (not shown) on the main wheel, fold the main rope over the suspension car, and fix the end of each main rope to the top of the hoistway or the machine room.

  In the elevator apparatus configured as described above, the axis of the driving sheave of the hoisting machine is installed in the vertical direction above the car, and a reverse pulley is provided in the vicinity of the driving sheave of the hoisting machine. Since the turning pulley is provided above the counterweight and the turning pulley is provided above the counterweight, the hoisting machine can be easily routed even if the hoisting machine is installed in the center of the hoistway plane. Will not interfere with the hoistway or machine room walls or be too close.

  7 is a schematic perspective view showing a conceptual structure of an elevator apparatus according to Embodiment 5 of the present invention, FIG. 8 is a front view seen from the direction B of FIG. 7, and FIG. 9 is a plan view seen from the direction C of FIG. is there.

In FIG. 7, the traction type elevator apparatus has an elevator car 2 and a counterweight 3 provided in a hoistway 1 so as to be able to move up and down. At the top of the hoistway 1, a driving sheave 4 around which a main rope 9 for raising and lowering the car 2 and the counterweight 3 is wound, a hoisting machine 5 for rotating the driving sheave 4, and a driving leash A reverse rotation pulley 6 arranged adjacent to the vehicle 4 is provided so as to be positioned above the counterweight 3. Further, at the top of the hoistway 1, turning pulleys 7a and 7b installed in the gap between the car 2 and the hoistway 1 when the car 2 at the top of the hoistway 1 is located at the uppermost part of the stroke are shafts 7c. 7d are provided horizontally. Further, turning pulleys 8 a and 8 b are provided on the uppermost counterweight 3 side in the hoistway 1 above the shaft 4 a of the drive sheave 4 and the shaft 6 a of the reverse pulley 6. The shaft 4a of the drive sheave 4 and the shaft 6a of the reverse sheave 6 are installed directly above the counterweight 3 so as to be horizontal, and the reverse sheave 6 rotates in the opposite direction to the drive sheave 4.
And the main rope 9 which attaches one end to the car 2 and attaches the other end to the counterweight 3 and suspends the car 2 and the counterweight 3 is a main rope of the first group consisting of at least one main rope. 9a and the second group main rope 9b. The turning pulleys 7a and 8a are turning pulleys on which the first group of main ropes are hung, and constitute the first group of turning pulleys. The turning sheaves 7b and 8b are turning sheaves on which the second group of main ropes are hung, and constitute the second group of turning sheaves.
One end of the main rope 9a of the first group is attached to the right side of the lower part of the car 2, and a part of the car 2 is suspended, and the other end of the main rope 9a of the first group is attached to the right side of the upper part of the counterweight 3. It is attached and a part of the counterweight 3 is suspended. The main rope 9a of the first group starts from the right fixed portion to the lower part of the car 2 and is hung on 7a which is one of the first group of turning pulleys on the right side of the car 2 at the top of the hoistway 1. It is hung on 8a which is one of the 1st group turning pulleys installed in the upper part and the right side of the reverse rotation pulley 6, and it is inclined diagonally downward. Next, it is hung on the lower side of the drive sheave 4 and folded upward, and is hung on the upper side of the adjacent reverse pulley 6 and folded again downward. Then, a route to the right fixed portion at the top of the counterweight 3 is taken.
On the other hand, one end of the second group main rope 9b is attached to the left side of the lower part of the car 2 and suspends a part of the car 2, and the other end of the second group main rope 9b is the left side of the upper part of the counterweight 3. A part of the counterweight 3 is suspended by being attached to the part. The main rope 9b of the second group starts from the left fixed part to the lower part of the car 2 and is hung on 7b which is one of the second group of turning pulleys on the left side of the car 2 at the top of the hoistway 1. Then, it is hung on 8b, which is one of the second group of turning sheaves installed on the upper left side of the driving sheave 4 and is directed obliquely downward. Next, it is hung on the lower side of the reverse pulley 6 and folded upward, and hung on the upper side of the adjacent drive sheave 4 and folded downward again. Then, a route to the left fixed portion at the top of the counterweight 3 is taken.
The main rope 9a of the first group and the main rope 9b of the second group intersect each other on the projection plane viewed from the axial direction in the portion from the driving sheave 4 to the reverse pulley 6. The main rope 9a of the first group and the main rope 9b of the second group are parts extending over the drive sheave 4 and the reverse sheaves 8a and 8b, the drive sheave 4 and the reverse sheave 6 installed above the reverse sheave 6. At the projection plane seen from the axial direction. The turning pulleys 8a and 8b are inclined so that the shafts 8c and 8d are substantially in the vertical direction so as to engage with the inclinations of the main ropes 9a and 9b.
FIG. 8 is a partial detail view of FIG. 7 as viewed from the direction B. In the figure, the two-dot chain line indicates the position when the car 2 reaches the top of the stroke. FIG. 9 is a partial detail view of FIG. 7 viewed from the C direction. As shown in FIG. 8, the turning pulleys 7a and 7b are installed in the gap between the car 2 and the hoistway 1, and the turning pulleys 7a and 7b and the car 2 may interfere even when the car 2 reaches the top. Absent. Further, as shown in FIG. 9, the turning pulleys 8a and 8b are installed above the car 2 so that a part of the turning pulleys 8a and 8b overlaps the car when viewed on the horizontal projection plane. The two groups of main ropes 9b intersect on the projection plane as viewed from the axial direction in the section between the driving sheaves 4 and the reverse sheaves 6 and the turning sheaves 8a and 8b and the driving sheaves 4 and the reverse sheaves 6. Therefore, the distance between the turning pulley 8a and the drive sheave 4 and the distance between the turning pulley 8b and the reverse pulley 6 are increased, and the turning pulleys 8a and 8b engaged with the inclinations of the main ropes 9a and 9b are Since the shafts 8c and 8d are inclined so as to be substantially vertical, the installation space in the vertical direction of the turning sheaves 8a and 8b is reduced, and the height dimension required above the car is reduced.

As described above, the elevator apparatus according to the present invention is suitable for use in a traction type elevator apparatus having no machine room.

Claims (8)

A car suspended by the main rope and going up and down in the hoistway, a counterweight suspended by the main rope and going up and down in the hoistway in the opposite direction, a drive sheave around which the main rope is wound, and the drive leash In an elevator apparatus comprising a hoist that moves the car and the counterweight up and down by rotating a car,
A reverse rotation pulley that is arranged adjacent to the drive sheave and has an axis parallel to the axis of the drive sheave and that rotates in a direction opposite to the rotation direction of the drive sheave, and is provided in addition to the reverse rotation pulley. A first group of turning pulleys comprising at least one turning pulley, and a second group of turning pulleys comprising at least one turning pulley,
The main ropes consist of a first group of main ropes and a second group of main ropes, each consisting of at least one main rope;
The main rope of the first group is wound around the driving sheave from one of the turning sheaves of the first group, and is reversely bent so as to be bent in the direction opposite to the bending wound around the driving sheave. It ’s wrapped around a counter pulley,
The second group main rope is wound around the reverse rotation pulley from one of the second group rotation pulleys and is bent in the direction opposite to the bending around the reverse rotation pulley. Wrapped around a sheave,
The portion of the first group main rope extending from the drive sheave to the reverse sheave and the portion of the second group main rope extending from the reverse sheave to the drive sheave are the drive sheave and the reverse sheave. An elevator apparatus characterized by intersecting on a projection plane viewed from the axial direction of the motor. The shaft of the drive sheave and the shaft of the reverse pulley are installed so as to be horizontal,
The first group of turning pulleys consists of one turning pulley installed so that its axis is horizontal,
The second group of turning pulleys consists of one turning pulley installed so that its axis is horizontal,
The first group of turning pulleys and the second group of turning pulleys are installed above the shafts of the drive sheave and the reverse turning pulley,
In the route from the car of the first group main rope to the counterweight, the first main rope is hung in the order of the first group of turning pulleys, the driving sheave, and the reverse pulley.
In the path from the cage of the second group main rope to the counterweight, the second main rope is hung in the order of the first group turning pulley, the reverse turning pulley, and the driving sheave. The elevator apparatus according to claim 1. The shaft of the driving sheave and the shaft of the reverse pulley are installed above the counterweight so as to be horizontal,
One of the first group of turning pulleys and one of the second group of turning pulleys are installed above the shafts of the drive sheave and the reverse turning pulley,
Another one of the first group of turning sheaves and the other one of the second group of turning sheaves are installed above the car, or the other one of the first group of turning sheaves or the first Install one of the other two groups of turning pulleys,
In the route from the car of the first group main rope to the counterweight, the first main rope is hung in the order of one or two of the first group of turning sheaves, the drive sheave, and the reverse sheave. And
In the route from the car of the second group main rope to the counterweight, the second main rope is hung in the order of one or two of the first group of turning pulleys, the reverse turning pulley, and the driving sheave. The elevator apparatus according to claim 1, wherein the elevator apparatus is provided. The axis of the drive sheave and the axis of the reverse pulley are installed above the car so as to be vertical,
One of the first group of turning sheaves and one of the second group of turning sheaves are installed above the car such that the axis is horizontal, the other one of the first group of turning sheaves and the first The other one of the two groups of turning pulleys is installed above the counterweight so that the axis is horizontal,
On the route from the first group of main ropes to the counterweight, one of the first group of turning sheaves installed above the car, the drive sheave, the reverse sheave, and above the counterweight A first main rope is hung in the order of the other one of the first group of turning pulleys installed;
On the route from the second group main rope cage to the counterweight, above one of the second group turning sheaves installed above the cage, the reverse sheave, the drive sheave, and above the counterweight 2. The elevator apparatus according to claim 1, wherein the second main rope is hung in the order of the other one of the installed second group of turning pulleys. The shaft of the driving sheave and the shaft of the reverse pulley are installed above the counterweight so as to be horizontal,
One of the first group of turning pulleys and one of the second group of turning pulleys are installed above the shafts of the drive sheave and the reverse turning pulley,
Installing another one of the first group of turning pulleys and the other one of the second group of turning pulleys above the car;
In the route from the car of the first group main rope to the counterweight, the first main rope is hung in the order of two turning pulleys of the first group, the driving sheave, and the reverse pulley.
In the route from the cage of the second group main rope to the counterweight, the second main rope is hung in the order of the two turning pulleys of the first group, the reverse pulley, and the driving sheave,
The first group main rope extends from one of the first group turning pulleys to the drive sheave and the second group main rope extends from one of the second group turning pulleys to the reverse turning pulley. 2. The elevator apparatus according to claim 1, wherein the portion intersects the driving sheave and the projection plane viewed from the axial direction of the reverse pulley.   6. The hoisting machine that rotates the drive sheave does not have a brake device, and includes a brake device for stopping the rotation of the reverse pulley, according to any one of claims 1 to 5. Elevator device.   7. A driving sheave, a reverse pulley, a reverse pulley other than the reverse pulley, and a hoisting machine are installed in the hoistway. Elevator equipment.   2. A second drive sheave that is rotated in the same direction as the reverse direction pulley by a second hoisting machine different from the hoisting machine instead of the reverse direction pulley. The elevator apparatus in any one of Claim 5 and Claim 7.

Images