KR100688730B1 - Elevator equipment - Google Patents

Abstract

In the present invention, the elevator car 4 and the counterweight 3, which elevate the inside of the hoistway 1 in the opposite directions, are suspended by the main rope 9, and the main rope 9 is wound, It is provided with the hoisting apparatus 10 which drives the elevator car 4 and the counterweight 3. The hoisting apparatus 10 is provided with at least two hoisting apparatuses 11 which consist of the drive sheave 12 in which the main rope 9 was wound, and the electric motor 13 which rotationally drives this drive sheave 12, At least 1 The stem is mounted on the counterweight 3. And all the hoisting machines 11 used for the hoisting apparatus 10 are mounted in the counterweight 3. Or at least another one of the hoisting machines 11 of the hoisting apparatus 10 is provided in the upper part of a hoistway.

Description

Elevator device {ELEVATOR EQUIPMENT}             

The present invention relates to a rope type elevator apparatus using a hoisting device, and more particularly to an elevator apparatus in which a hoisting device is mounted on a counterweight.

In order to reduce the necessary space in the hoistway of an elevator as much as possible, the elevator apparatus which mounted on the counterweight the thin hoisting machine accommodated in the frame body of a counterweight is already proposed. As the hoisting machine used in such an elevator apparatus is generally required to have a relatively large electric motor with a thin shape, a motor using a permanent magnet as a motor in which a rotational shaft of a rotor is disposed coaxially with the rotational axis of the drive sheave of the hoisting machine. An axial gap type or radial gap type electric motor is employed. Here, the axial gap motor has a stator and a rotor disposed to face each other in the direction of the rotational axis of the rotor via an air gap, for example, Japanese Patent Laid-Open No. 1995-137963 discloses this axial gap type. An elevator apparatus is disclosed in which a hoist using an electric motor is mounted on a counterweight. In one radial gap type motor, the stator and the rotor are disposed to face each other in the vertical direction with respect to the direction of the rotation axis of the rotor via an air gap, and this radial gap type motor is also conventionally used in a hoisting machine.

In an elevator apparatus in which the hoisting machine is mounted on the balance weight as described above, it is necessary to enlarge the hoisting machine in order to realize an elevator having a larger loading weight of an elevator car, that is, a large-capacity elevator. In this case, when the torque of the motor used in the hoisting machine is to be increased, the axial gap type motor generally responds by increasing the air gap diameter of the stator and the rotor, but as a result, the motor becomes a large diameter, thereby bearing the rotor. The larger the motor, the larger the thickness of the motor in the direction of the rotational axis of the rotor. Therefore, the outer shape of the hoist, that is, the dimension in the radial direction, and the thickness in the direction of the drive sheave axis of the hoist become large. In addition, in another radial gap type motor, when the torque of the motor used for the hoisting machine is to be increased, the rotor and the stator are generally thickened in the direction of the rotation axis of the rotor. Thus, the hoist has a large thickness in the direction of the rotation axis of the drive sheave.

As described above, even when an axial gap type or a radial gap type electric motor is used, if the torque of the hoisting machine is to be increased in response to the increase in the capacity of the elevator, the hoisting machine becomes large, so that the width of the frame body of the counterweight is not expanded. If not, everything will not be stored. As a result, there was a problem that the horizontal projected area of the hoistway was increased, and the required space of the hoistway increased.

Furthermore, in the case where one hoist is disposed in the frame of the counterweight, it is necessary to have a hoist of a size that is adapted to the area of each of the capacity to cope with an increase in the elevator capacity. Moreover, if one type of hoisting machine is to cope with the small-capacity area to the large-capacity area, it is necessary to unify it as a large-capacity large-size hoist that can cope with all areas, which is unreasonable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in an elevator equipped with a hoisting machine in a counterweight, it is possible to cope with an increase in the elevator capacity without increasing the horizontal projection area of the hoistway, that is, the hoistway space required for the building. An object of the present invention is to provide an elevator device.

Summary of the Invention

The elevator apparatus of the present invention includes an elevator car for elevating the inside of a hoistway, a balance weight for elevating the inside of the hoistway in a direction opposite to the elevator car, and a main rope for suspending the elevator car and the counterweight, The elevator car and the balancing weight are driven by the hoisting device. The hoist used for this hoisting apparatus consists of a drive sheave in which the main rope is wound, and an electric motor for rotating the drive sheave. And the hoisting apparatus is equipped with at least 2 this hoisting machine, and at least 1 of these is mounted on a counterweight.

In addition, the hoist used for the hoisting apparatus is comprised as what was mounted in the counterweight.

Moreover, at least another one of the hoisting machines of the hoisting apparatus is comprised as an upper part of a hoistway.

According to the invention described above, an elevator capable of coping with an increase in elevator capacity can be configured without increasing the horizontal projection area of the hoistway, that is, the hoistway space required for the building. If a plurality of hoisting machines having the same specification are used, the number of hoisting machines can be adjusted, and the series can be easily performed for elevators from the small capacity area to the large capacity area.

1 is a view showing an arrangement example of an elevator apparatus according to a first embodiment of the present invention,

2 is a plan view of the elevator apparatus in FIG. 1;

3 is a view showing an arrangement example of an elevator apparatus according to Embodiment 2 of the present invention;

4 is a view showing an arrangement example of an elevator apparatus according to Embodiment 3 of the present invention;

5 is a view showing an arrangement example of an elevator apparatus according to Embodiment 4 of the present invention;

6 is a view showing an arrangement example of an elevator apparatus according to a fifth embodiment of the present invention;

7 is a view showing an arrangement example of an elevator apparatus according to Embodiment 6 of the present invention;

Fig. 8 is a diagram showing an arrangement example of an elevator apparatus according to Embodiment 7 of the present invention.

In order to demonstrate this invention in more detail, this is demonstrated according to attached drawing. In addition, in each figure, the same code | symbol is attached | subjected to the same or corresponding part, and the duplication description is abbreviate | omitted or abbreviate | omitted suitably.

Example 1

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the example of arrangement | positioning of the elevator apparatus which concerns on Embodiment 1, and expands the elevation which looked at the elevator apparatus from the horizontal direction of the hoistway, and puts it on the elevator car and the balance weight which were suspended by the elevator main rope. It is a conceptual diagram which shows the shape driven by the mounted hoisting apparatus, and elevating the inside of a hoistway.

FIG. 2 is a plan view of the elevator apparatus in FIG. 1, and this figure is a deflector sheave mainly for use as a diagram for explaining the arrangement of the hoisting apparatus mounted on the counterweight and the arrangement relationship between the elevator car and the counterweight. The illustration of the main rope is omitted.

1 and 2, a pair of counterweight guide rails 2 and a pair of elevator car guide rails (not shown) are provided in the hoistway 1, respectively. The counterweight 3 is guided by the counterweight guide rails 2 and ascends the inside of the hoistway 1. The elevator car 4 is guided by the guide rail for the elevator car and moves up and down in the hoistway 1 in the direction opposite to the counterweight 3. In addition, the doorway door 5 is provided in the elevator car 4, and one surface which has this doorway door 5 is made into the front of the car 4. As shown in FIG. The counterweight 3 is arrange | positioned between the back surface of the car 4 which opposes the front of the elevator car 4, and the wall surface 1a of the hoistway 1. As shown in FIG. In addition, the counterweight 3 may be arrange | positioned between any one of both side surfaces of the car 4 orthogonal to the front of the elevator car 4, and the wall surface 1a of the hoistway 1. As shown in FIG.

Next, the elevator main rope 9 is wound, and the hoisting apparatus 10 which drives the elevator car 4 and the counterweight 3 is mounted in the counterweight 3. The hoisting apparatus 10 is comprised using two hoisting machines 11, and shares the torque required for driving of an elevator with two hoisting machines 11. Each hoist 11 has a drive sheave 12 in which a main rope 9 is wound and an electric motor 13 for rotationally driving the drive sheave 12, and a drive sheave ( The thickness D of the rotation axis direction of 12) is formed small.

Next, the two winding machines 11 are mounted in the frame body constituting the external shape of the counterweight 3 so that they do not overlap each other in the horizontal direction but overlap in the vertical direction. More specifically, as shown in FIG. 2, in general, the counterweight 3 has a cross-sectional shape in the horizontal direction short in the gap direction between the car 4 and the wall surface 1a, and the width of the car 4. It has a rectangular cross section long in a direction, and also has the external shape of the rectangular parallelepiped formed long in a vertical direction. That is, the counterweight 3 is arrange | positioned so that it may occupy as much space as possible on the horizontal projection surface of the hoistway 1. Moreover, the external shape of the counterweight 3 is comprised by the frame body, and the counterweight 3 is further mounted in the lower part in a frame body. In addition, in the counterweight 3 shown in FIG. 1 (similar figure below), illustration of the counterweight weight is abbreviate | omitted, and the external shape of the counterweight 3 in the figure has shown the external shape of the frame body. Therefore, the hoisting apparatus 10 of this Embodiment 1 is the dimension A of the longitudinal direction of the counterweight 3 on the horizontal projection surface of the hoistway 1 (in this invention, the horizontal width A of the counterweight 3). In order not to enlarge], the two hoist 11 is mounted so that it may overlap in a vertical direction. Moreover, the hoisting apparatus 10 does not enlarge the dimension B (it is also called thickness B of the balance weight 3 in this invention) orthogonal to the said dimension A in order to prevent it from expanding. It is mounted on the counterweight 3 so that the thickness direction of 11) may match with the longitudinal direction of the counterweight 3. In addition, in the present Example 1, the hoisting apparatus 10 is comprised using two hoisting machines of the same specification.

Next, both ends of the main rope 9 are fixed to the upper part of the hoistway 1, and one end of the main rope 9 is sequentially wound on two hoisting machines 11 starting from the upper part of the hoistway 1. , The upper part of the two hoisting tracks wound on the deflector sheave 8 for the counterweight mounted on the counterweight 3 for the purpose of increasing the winding amount of the main rope 9 to the hoisting machine 11 and installed on the hoistway 1. It is wound around the deflector sheave 7. Then, it is sequentially wound on a pair of suspension sheaves 6 for a car provided below the elevator car 4, and the other end of the main rope 9 is fixed to the upper part of the hoistway 1 by rising again. . In addition, in the present Example 1, the main rope 9 which consists of several rope has only a single path | route, and it is wound up by two winding machines 11 continuously.

According to the above Embodiment 1, since the hoisting apparatus 10 is comprised using two hoisting machines 11, the torque required for driving of an elevator can be shared by two hoisting machines 11. Conventionally, in order to cope with an elevator having a larger loading weight of an elevator car, that is, a large-capacity elevator, it was necessary to increase the hoisting machine in order to obtain the torque required for driving the elevator with one hoisting machine. In the hoisting apparatus 10, it is not necessary to enlarge the external shape of each hoist 11. Moreover, the two hoisting machines 11 are mounted in the frame body of the counterweight 3 so that they do not overlap each other in the horizontal direction but overlap in the vertical direction. Thereby, in the hoisting machine 11 using the radial gap-type electric motor 13, the increase of the thickness D of the drive sheave 12 in the rotating shaft direction can be suppressed, and the thickness B of the counterweight 3 is reduced. There is no need to zoom in. Moreover, in the hoisting machine 11 using the axial gap-type electric motor 13, the increase in the dimension C of the outer diameter direction and the thickness D of the drive sheave rotation axis direction of the hoisting machine can be suppressed, and the balance weight 3 of There is no need to enlarge the width A and the thickness B. Therefore, even in the hoisting apparatus 10 using the electric motor 13 of any form, it can respond to the elevator which enlarged the capacity, without increasing the horizontal projection area of a hoistway.

Moreover, productivity and mounting property of the hoist 11 are improved by using two hoist 11 of the hoisting apparatus 10 as the hoist 11 of the same specification. Therefore, when increasing the capacity of an elevator, it becomes possible to respond by increasing the number of the hoist 11 of the same specification used for the hoisting apparatus 10. FIG. That is, by adjusting the number of the hoisting machines 11, it becomes possible to easily perform series formation on the elevator from the small capacity area to the large capacity area.

Example 2

Fig. 3 is a view showing an arrangement example of the elevator apparatus according to the second embodiment of the present invention, which is an elevation view of the elevator apparatus viewed from the horizontal direction of the hoistway, and is mounted on the elevator car and the balance weight suspended by the main rope. It is a conceptual diagram which shows the shape which is driven by the hoisting apparatus, and is elevating in a hoistway.

As shown in FIG. 3, in the present Example 2, similarly to Example 1, the hoisting apparatus 10 comprised using the two hoist 11 was mounted in the counterweight 3, and the two hoist 11 ) Are mounted so that they do not overlap each other in the frame body of the counterweight 3 in the horizontal direction, but overlap in the vertical direction. That is, also in this case, two hoist 11 is arrange | positioned so that it is not necessary to enlarge the width | variety A and thickness B of the counterweight 3. And the main rope 9 has only a single path | route, and it is wound up by two winding machines 11 in succession.

Here, in the second embodiment, only the arrangement direction of the winding direction of the main rope 9 to the drive sheave of the hoist 11 and the arrangement of the deflector sheave 8 for balance weights are different from those of the first embodiment. That is, in Example 1, after the main rope 9 in which one end part was fixed to the hoistway 1 was wound up in turn by the two hoist 11, the deflector sheave 8 for balance weights is arrange | positioned, In the present Example 2, the deflector sheave 8 for balance weights is arrange | positioned between two hoisting machines 11 on the path | route of the main rope 9. As shown in FIG. In this way, by changing the placement position of the counterweight deflector sheave 8, according to the situation when the hoist 11 is attached to the counterweight 3, the appropriate placement position of the hoisting apparatus 10 can be selected. . Since the rest of the configuration and its operation are the same as those in the first embodiment, the same or similar parts are denoted by the same reference numerals and the description thereof is omitted.

Also in the above Example 2, the hoisting apparatus 10 is comprised using two hoisting machines 11, and can share the torque required for driving of an elevator with the two hoisting machines 11. Therefore, in order to cope with a large-capacity elevator, it is not necessary to enlarge the external shape of each hoist 11. Moreover, the two hoisting machines 11 are mounted in the frame body of the counterweight 3 so that they do not overlap each other in the horizontal direction but overlap in the vertical direction. Therefore, even in the hoisting apparatus 10 using the electric motor 13 of any type of an axial gap type or a radial gap type, it becomes unnecessary to enlarge the width | variety A and thickness B of the counterweight 3, It is possible to cope with an elevator having a larger capacity without increasing the horizontal projection area of the hoistway.

In addition, the same effects as those obtained in Example 1 are obtained.

Example 3

Fig. 4 is a view showing an arrangement example of the elevator apparatus according to the third embodiment of the present invention, which is an elevation view of the elevator apparatus viewed from the horizontal direction of the hoistway, mounted on an elevator car and a balance weight suspended by a main rope. It is a conceptual diagram which shows the shape which is driven by the hoisting apparatus, and is elevating in a hoistway.

As shown in FIG. 4, in this Embodiment 3, similarly to Embodiment 1 and 2, the hoisting apparatus 10 comprised using the two hoisting machines 11 is mounted in the counterweight 3, The hoist 11 is mounted so that it does not overlap with each other in the frame body of the counterweight 3 in a horizontal direction, but overlaps in a vertical direction. That is, also in this case, two hoist 11 is arrange | positioned so that it is not necessary to enlarge the width | variety A and thickness B of the counterweight 3.

Next, the main rope 9 used in the third embodiment consists of two sets of main rope units 9a and 9b each consisting of a plurality of ropes. One end of the main rope unit 9a is fixed to the hoistway 1, and is wound around one hoist 11 of two hoisters 11 to reach the hoistway upper deflector sheave 7. Then, after being wound on the two elevator upper side deflector sheaves 7, they are sequentially wound on a pair of car suspension sheaves 6 provided below the elevator car 4, and the other end is elevated again to raise the other end of the elevator 1. It is fixed at the top. The other main rope unit 9b has one end fixed to the hoistway 1 in the same way as the main rope unit 9a, but is then wound around the other one of the two hoist 11 inside the hoist 11. have. Since the path after that is the same as the main rope unit 9a, the description thereof is omitted. Therefore, the two sets of main rope units 9a and 9b are mounted in parallel and wound around different winding machines. Since the rest of the configuration and its operation are the same as those in the first embodiment, the same or similar parts are denoted by the same reference numerals and the description thereof is omitted.

Also in the above-mentioned Example 3, the hoisting apparatus 10 is comprised using two hoisting machines 11, and can share the torque required for driving of an elevator with the two hoisting machines 11. Therefore, in order to cope with a large-capacity elevator, it is not necessary to enlarge the external shape of each hoist 11. Moreover, the two hoisting machines 11 are mounted in the frame body of the counterweight 3 so that they do not overlap each other in the horizontal direction but overlap in the vertical direction. Therefore, even in the hoisting apparatus 10 which uses the electric motor 13 of any type of an axial gap type | mold or a radial gap type | mold, it becomes unnecessary to enlarge the width | variety A and thickness B of the counterweight 3. It is possible to cope with an elevator having a larger capacity without increasing the horizontal projection area of the hoistway.

In addition, the same effects as those obtained in Example 1 are exhibited.

Example 4

Fig. 5 is a view showing an arrangement example of the elevator apparatus according to the fourth embodiment of the present invention, which is an elevation view of the elevator apparatus viewed from the horizontal direction of the hoistway, mounted on an elevator car and a balance weight suspended by a main rope. It is a conceptual diagram which shows the shape which is driven by the hoisting apparatus, and is elevating in a hoistway.

As shown in FIG. 5, in this Embodiment 4, similarly to Example 3, the hoisting apparatus 10 comprised using the two hoist 11 was mounted in the counterweight 3, and the two hoist 11 ) Are mounted so that they do not overlap each other in the frame body of the counterweight 3 in the horizontal direction, but overlap in the vertical direction. That is, also in this case, two hoist 11 is arrange | positioned so that it is not necessary to enlarge the width | variety A and thickness B of the counterweight 3. Since the main rope 9 used in the fourth embodiment is also the same as the third embodiment, the main rope 9 is composed of two sets of main rope units 9a and 9b each composed of a plurality of ropes.

Here, the fourth embodiment is different from the third embodiment in that a deflector sheave 8 for balance weight is used on the path of one main rope unit 9a. By using the deflector sheave 8 for counterweight in this way, the freedom degree of the fixed position of the upper part of the hoistway 1 of the main rope 9 in the horizontal direction, and the mounting position of the hoist 11 in the counterweight 3 is raised. Can be. The other configurations and their operations are the same as those in the first embodiment and the like, and the same or similar parts are denoted by the same reference numerals and the description thereof is omitted.

Also in the above-mentioned Example 4, the hoisting apparatus 10 is comprised using two hoisting machines 11, and can share the torque required for driving of an elevator with the two hoisting machines 11. Therefore, in order to cope with a large-capacity elevator, it is not necessary to enlarge the external shape of each hoist 11. Moreover, the two hoisting machines 11 are mounted in the frame body of the counterweight 3 so that they do not overlap each other in the horizontal direction but overlap in the vertical direction. Therefore, even in the hoisting apparatus 10 using the electric motor 13 of any type of an axial gap type or a radial gap type, it becomes unnecessary to enlarge the width | variety A and thickness B of the counterweight 3, It is possible to cope with an elevator having a larger capacity without increasing the horizontal projection area of the hoistway.

In addition, the same effects as those obtained in Example 1 are exhibited.

Example 5

Fig. 6 is a view showing an arrangement example of the elevator apparatus according to the fifth embodiment of the present invention, which is an elevation view of the elevator apparatus viewed from the horizontal direction of the hoistway, mounted on an elevator car and a balance weight suspended by a main rope. It is a conceptual diagram which shows the shape which is driven by the hoisting apparatus, and is elevating in a hoistway.

As shown in FIG. 6, in the fifth embodiment, similarly to the first to fourth embodiments, the hoisting device 10 constructed by using two hoisting machines 11 is mounted on the counterweight 3. However, in the fifth embodiment, unlike the first to fourth embodiments described above, the two hoists 11 are mounted so as to overlap each other in the frame body of the counterweight 3 in the horizontal direction, but not in the vertical direction. . That is, two hoisting machines 11 are arranged side by side in the horizontal direction.

Next, as in the second embodiment, the main rope 9 used in the fifth embodiment has only a single path, and deflector sheaves for balance weights between two hoisting machines 11 on the path of the main rope 9. (8) is arrange | positioned. One end of the main rope 9 is fixed to the hoistway 1, and is continuously wound in the order of one hoist 11, the deflector sheave 8 for balance weights, and the other hoist 11, It reaches the upper side deflector sheave 7 of a hoistway. Then, after being wound on the two elevator upper side deflector sheaves 7, they are sequentially wound on a pair of car suspension sheaves 6 provided below the elevator car 4, and the other end is elevated again to raise the other end of the elevator 1. It is fixed at the top. The other configurations and their operations are the same as those in the first embodiment and the like, and the same or similar parts are denoted by the same reference numerals and the description thereof is omitted.

According to the fifth embodiment, since the hoisting apparatus 10 is configured using two hoisting machines 11, the two hoisting machines 11 can share the torque required for driving the elevator. Therefore, in order to cope with a large-capacity elevator, it is not necessary to enlarge the external shape of each hoist 11. In addition, since the two hoisting machines 11 are arranged side by side in the horizontal direction, the width A of the counterweight 3 increases compared with the other embodiments 1 to 4, but in the frame body of the counterweight 3 It is possible to reduce the wasteful gap in the horizontal direction. Therefore, when the number of the hoisting machines 11 is further increased in correspondence with a large capacity elevator, the increase of the dimension E of the counterweight 3 in the vertical direction can be largely suppressed, and the inside of the frame body of the counterweight 3 is reduced. It becomes possible to make volumetric efficiency favorable in arrangement | positioning of the hoist 11 of a furnace.

In addition, the same effects as those obtained in Example 1 are exhibited.

Example 6

Fig. 7 is a view showing an arrangement example of the elevator apparatus according to the sixth embodiment of the present invention, in which the elevator apparatus is mounted on an elevator car and a balance weight suspended by a main rope by developing an elevation view of the elevator apparatus viewed from the horizontal direction of the hoistway. It is a conceptual diagram which shows the shape which is driven by the hoisting apparatus, and is elevating in a hoistway.

As shown in FIG. 7, in this Embodiment 6, similarly to Example 5, the hoisting apparatus 10 comprised using the two hoist 11 was mounted in the counterweight 3, and the two hoist 11 ) Overlap each other in the frame body of the counterweight 3 in the horizontal direction, but not in the vertical direction.

Next, as in the third embodiment, the main rope 9 used in the sixth embodiment is composed of two sets of main rope units 9a and 9b each composed of a plurality of ropes. One end of the main rope unit 9a is fixed to the hoistway 1, and is wound around one hoist 11 of two hoisters 11 to reach the hoistway upper deflector sheave 7. Then, after being wound on the two elevator upper side deflector sheaves 7, they are sequentially wound on a pair of car suspension sheaves 6 provided below the elevator car 4, and the other end is elevated again to raise the other end of the elevator 1. It is fixed at the top. Similarly to the main rope unit 9a, one of the main rope units 9b is fixed at the upper part of the hoistway 1, but is then connected to the other one of the two hoist 11 inside the hoist 11. It is wound. Since the path after that is the same as the main rope unit 9a, the description thereof is omitted. Therefore, two sets of main rope units 9a and 9b are mounted in parallel and wound around different hoisting machines. The other configurations and their operations are the same as those in the first embodiment and the like, and the same or similar parts are denoted by the same reference numerals and the description thereof is omitted.

According to the sixth embodiment, since the hoisting apparatus 10 is configured using two hoisting machines 11, the two hoisting machines 11 can share the torque required for driving the elevator. Therefore, in order to cope with a large-capacity elevator, it is not necessary to enlarge the external shape of each hoist 11. In addition, since the two hoisting machines 11 are arranged side by side in the horizontal direction, the width A of the counterweight 3 increases compared with the other embodiments 1 to 4, but in the frame body of the counterweight 3 It is possible to reduce the wasteful gap in the horizontal direction. Therefore, when the number of the hoisting machines 11 is further increased in correspondence with a large capacity elevator, the increase of the dimension E of the counterweight 3 in the vertical direction can be largely suppressed, and the inside of the frame body of the counterweight 3 is reduced. It becomes possible to make volumetric efficiency favorable in arrangement | positioning of the hoist 11 of a furnace.

In addition, the same effects as those obtained in Example 1 are exhibited.

Example 7

Fig. 8 is a view showing an arrangement example of the elevator apparatus according to the seventh embodiment of the present invention, in which the elevator apparatus is mounted on an elevator car and a balance weight suspended by a main rope, with an elevation view of the elevator apparatus viewed from the horizontal direction of the hoistway. It is a conceptual diagram which shows the shape which is driven by the hoisting apparatus, and is elevating in a hoistway.

As shown in FIG. 8, the hoisting apparatus 10 is comprised using two hoisting machines 11 similarly to other Example. However, in the seventh embodiment, one hoist 11 is mounted on the counterweight 3, and the other hoist 11 is installed so as to overlap the counterweight 3 in the vertical direction above the hoistway 1. It is. That is, the counterweight 3 is guided by the counterweight guide rails 2 and moves upwards, and is provided between the pair of guide rails 2 facing each other. Therefore, also in this case, two hoist 11 is arrange | positioned so that it is not necessary to enlarge the width | variety A and thickness B of the counterweight 3.

Next, the main rope 9 used in the seventh embodiment has only a single path. One end portion of the main rope 9 is fixed to the hoistway 1, and is continuously wound on two hoisting machines 11 to reach the hoistway-side deflector sheave 7. Then, after being wound on the two elevator upper side deflector sheaves 7, they are sequentially wound on a pair of car suspension sheaves 6 provided below the elevator car 4, and the other end is elevated again to raise the other end of the elevator 1. It is fixed at the top. The rest of the configuration and its operation are the same as those in the first embodiment and the like, and the same or similar parts are denoted by the same reference numerals and the description thereof is omitted.

Also in the above Example 7, the hoisting apparatus 10 is comprised using two hoisting machines 11, and can share the torque required for driving of an elevator with the two hoisting machines 11. Therefore, in order to cope with a large-capacity elevator, it is not necessary to enlarge the external shape of each hoist 11. Moreover, the two hoisting machines 11 are mounted in the frame body of the counterweight 3 so that they do not overlap each other in the horizontal direction but overlap in the vertical direction. Therefore, even in the hoisting apparatus 10 using the electric motor 13 of any type of an axial gap type or a radial gap type, it becomes unnecessary to enlarge the width | variety A and thickness B of the counterweight 3, It is possible to cope with an elevator having a larger capacity without increasing the horizontal projection area of the hoistway.

In addition, the same effects as those obtained in Example 1 are exhibited.

In the above embodiment, the example in which the hoisting device 10 is configured by using two hoisting machines 11 is shown, but in the elevator apparatus of the present invention, the number of hoisting machines 11 is not limited to two, at least. One hoist 11 may be mounted on the counterweight 3, and the remaining plurality of hoists 11 may be mounted on the counterweight 3 or provided on the hoistway 1 above. Thereby, when the hoisting apparatus 10 is comprised using n hoisting machines 11 of the same specification, it can respond to the elevator of n times capacity, without increasing the horizontal width A and thickness B of the counterweight 3. It becomes possible. Therefore, by adjusting the number of hoists 11 mounted on the hoisting apparatus 10, the elevator apparatus which can cope from the area | region with small capacity of an elevator to a large area | region without increasing the horizontal projection area of the hoistway 1 is provided. Can provide.

In addition, in the above embodiment, although the hoisting apparatus 10 demonstrated the example comprised using the hoist 11 of the same specification, although the some hoisting machine combined the hoisting machine of another specification, for example, the hoisting machine with a different capacity | capacitance, good.

As mentioned above, the elevator apparatus which concerns on this invention can comprise the elevator which can cope with an elevator large capacity, without increasing the horizontal projection area of a hoistway, ie, the hoistway space required for a building. In addition, by using a plurality of hoisting machines having the same specification, the number of hoisting machines can be adjusted, and the series can be easily performed for the elevators from the small capacity area to the large capacity area. Therefore, this invention is useful as an elevator apparatus which is excellent in productivity and mountability, and can cope with a large capacity of an elevator, without impairing the merit of the space-saving elevator with a hoisting apparatus mounted on a counterweight.

Claims (8)

Elevator car which elevates in hoistway, A balance weight for elevating the inside of the hoistway in a direction opposite to the elevator car; A main rope suspending the elevator car and the counterweight; The main rope is wound, and a hoisting device for driving the elevator car and the counterweight, The hoisting apparatus includes at least two hoisting machines comprising a drive sheave wound with the main rope and an electric motor for rotating the drive sheave, at least one of which is mounted on the counterweight, At least two of the hoisting machines of the hoisting device are mounted so as to overlap in the vertical direction without overlapping in the frame body of the counterweight. Elevator device. The method of claim 1, The hoist of the hoisting device is all mounted on the counterweight Elevator device. delete Elevator car which elevates in hoistway, A balance weight for elevating the inside of the hoistway in a direction opposite to the elevator car; A main rope suspending the elevator car and the counterweight; The main rope is wound, and a hoisting device for driving the elevator car and the counterweight, The hoisting apparatus includes at least two hoisting machines comprising a drive sheave wound with the main rope and an electric motor for rotating the drive sheave, at least one of which is mounted on the counterweight, At least another one of the hoisting machines of the hoisting apparatus is provided on the hoistway. Elevator device. delete delete delete delete

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