JP2018165219A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an elevator device capable of reducing a space of a hoistway.SOLUTION: In the elevator device, a side surface of a car faces a wall surface of a hoistway through a space in a width direction of the hoistway. A counterweight and a hoisting machine are arranged in this space as viewed from above. The hoisting machine and a first counterweight guide rail are arranged between a first car guide rail and a second counterweight guide rail when viewed from the car side to the counterweight side. The first car guide rail is held by an uppermost part rail bracket at a position higher than a position of a hoisting machine base which holds the hoisting machine. The uppermost part rail bracket is arranged outside a region of a brake provided on at least any one of an upper part and a lower part of a hoisting machine body as viewed from above.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an elevator apparatus in which a hoisting machine for raising and lowering a car is provided at an upper part in a hoistway.

  Conventionally, a machine room-less type elevator apparatus in which a machine room is eliminated by arranging a hoisting machine in a hoistway is known. In a conventional machine room-less type elevator apparatus, in order to save the space of the hoistway, of the first and second car guide rails for guiding the raising and lowering of the car, the rear surface of the second car guide rail and the raising and lowering A configuration is known in which a part of the motor of the hoisting machine is disposed between the road wall and the sheave of the hoisting machine is disposed so as to overlap the second car guide rail when viewed from the landing side ( For example, see Patent Document 1).

  Conventionally, there is also known a machine room-less type elevator apparatus in which a part of a hoisting machine is arranged in a car area projected in the raising / lowering direction of a car in order to save the space of the hoistway (for example, Patent Document 2).

WO2013 / 084310 WO2001 / 062654

  However, in the conventional elevator apparatus disclosed in Patent Document 1, since the second car guide rail is arranged between a part of the motor of the hoisting machine and the car, the size of the second car guide rail When becomes larger, the distance between the car and the hoistway wall increases, and the horizontal size of the hoistway becomes larger.

  In addition, in the conventional elevator apparatus shown in Patent Document 2, since a part of the hoisting machine overlaps with the car area when viewed from above, the hoisting machine is installed above the lifting range of the car. Therefore, the height dimension of the top of the hoistway, that is, the overhead dimension is enlarged.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator apparatus that can save space in a hoistway.

  The elevator apparatus according to the present invention is provided with a car suspension car, a car that can be raised and lowered in the hoistway, first and second car guide rails that are provided in the hoistway and guide the car, and a counterweight hoisting car. A counterweight provided in the hoistway, which is provided in the hoistway, and provided in the hoistway, the first and second counterweight guide rails for guiding the counterweight, the hoisting machine main body, and the hoisting machine main body A hoisting machine and a hoisting machine that have a drive sheave provided rotatably and a brake that brakes the rotation of the drive sheave, and that is provided at the upper part in the hoistway and raises and lowers the car and the counterweight. And a suspension body that is wound around a car suspension wheel, a driving sheave and a counterweight suspension car, and suspends the car and the counterweight. Facing the hoistway wall through the space in the width direction of the The weight and the hoisting machine are arranged in a space when viewed from above, the brake is provided in at least one of the upper part and the lower part of the hoisting machine body, and the first car guide rail is The uppermost rail bracket is held at a position higher than the position of the upper machine base, and the uppermost rail bracket is disposed outside the brake region when viewed from above.

  According to the elevator apparatus according to the present invention, the range in which the first counterweight guide rail and the drive sheave can be arranged can be reduced in the width direction of the hoistway and can interfere with the first car guide rail. The hoisting machine can be brought closer to the car. Thereby, space saving of a hoistway can be achieved.

1 is an upper side view showing an elevator apparatus according to Embodiment 1 of the present invention. It is sectional drawing along the II-II line of FIG. It is sectional drawing along the III-III line of FIG. It is a horizontal sectional view which shows the elevator apparatus by Embodiment 2 of this invention. It is an upper side view which shows the elevator apparatus by Embodiment 3 of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is an upper side view showing an elevator apparatus according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along line III-III in FIG. In the figure, a car 2 and a counterweight 3 are provided in the hoistway 1 so as to be able to move up and down. The hoistway 1 is formed with a pair of hoistway wall surfaces 1 a and 1 b that face each other in the width direction of the hoistway 1. The car 2 has a bottom surface, a top surface, a front surface, a back surface, and a pair of side surfaces. One side surface of the car 2 faces one hoistway wall surface 1a through a space in the width direction of the hoistway 1, and the other side surface of the car 2 passes through the space in the width direction of the hoistway 1. Opposite the other hoistway wall surface 1a. A car entrance is provided in front of the car 2. When viewed from above, the car 2 is arranged with the car doorway facing the landing 4 on each floor.

  The counterweight 3 is arranged outside the area of the car 2 when viewed from above. Moreover, the counterweight 3 is arrange | positioned in the space between one hoistway wall surface 1a and the one side surface of the cage | basket | car 2, when it sees from the top. Thereby, the elevator apparatus in this Embodiment is a counterweight type falling-down type elevator apparatus.

  In the hoistway 1, a first car guide rail 5, a second car guide rail 6, a first counterweight guide rail 7 and a second counterweight guide rail 8 are installed.

  Each of the first car guide rail 5, the second car guide rail 6, the first counterweight guide rail 7 and the second counterweight guide rail 8 includes a flange portion disposed along the vertical direction. And a guide portion that protrudes horizontally from the flange portion and is disposed along the longitudinal direction of the flange portion. The cross-sectional shapes of the first car guide rail 5, the second car guide rail 6, the first counterweight guide rail 7 and the second counterweight guide rail 8 are T-shaped by the flange portion and the guide portion. It is in the shape.

  The first and second car guide rails 5 and 6 are arranged in a state where the respective guide portions face each other in the width direction of the hoistway 1. Thereby, when the hoistway 1 is viewed from above, as shown in FIG. 2, the straight line A connecting the respective guide portions of the first and second car guide rails 5 and 6 is in the width direction of the hoistway 1. It is parallel. The first car guide rail 5 is disposed in a space between one hoistway wall surface 1a and one side surface of the car 2, and the second car guide rail 6 is disposed on the other hoistway wall surface 1b and the other car. It is arranged in the space between the sides. The car 2 is disposed between the first car guide rail 5 and the second car guide rail 6. The car 2 moves up and down in the hoistway 1 while being guided by the guide portions of the first and second car guide rails 5 and 6.

  The first and second counterweight guide rails 7 and 8 have the guide portions facing each other in the depth direction of the hoistway 1, that is, in the direction perpendicular to both the width direction and the vertical direction of the hoistway 1. Is arranged in. Thus, when the hoistway 1 is viewed from above, as shown in FIG. 2, straight lines B connecting the respective guide portions of the first and second counterweight guide rails 7 and 8 are first and second. It is orthogonal to the straight line A connecting the guide portions of the car guide rails 5 and 6.

  The counterweight 3 is disposed between the first counterweight guide rail 7 and the second counterweight guide rail 8. The counterweight 3, the first counterweight guide rail 7 and the second counterweight guide rail 8 are spaces between one hoistway wall surface 1 a and one side surface of the car 2 when viewed from above. Is arranged. Further, the counterweight 3, the first counterweight guide rail 7 and the second counterweight guide rail 8 are respectively guided by the first and second car guide rails 5, 6 when viewed from above. With respect to the straight line A connecting the sections, it is arranged on the back side as viewed from the landing 4. Further, the first and second counterweight guide rails 7 and 8 overlap a part of the area of the first car guide rail 5 when viewed from the landing 4 side. The counterweight 3 moves up and down in the hoistway 1 while being guided by the guide portions of the first and second counterweight guide rails 7 and 8.

  A hoisting machine 9 that is a driving device for raising and lowering the car 2 and the counterweight 3 is provided in the upper part of the hoistway 1. In this example, a thin hoisting machine having a radial dimension larger than the axial dimension is used as the hoisting machine 9. The hoisting machine 9 is arranged above the lifting range of the counterweight 3. Moreover, the hoisting machine 9 is arrange | positioned in the space between one hoistway wall surface 1a and the side surface of the cage | basket | car 2, when it sees from the top. Furthermore, the hoisting machine 9 is arranged on the same side as the counterweight 3 with respect to the straight line A connecting the guide portions of the first and second car guide rails 5 and 6 when viewed from above. Yes. Thereby, the hoisting machine 9 overlaps a part of the area of the counterweight 3 when viewed from above, and is disposed outside the area of the car 2.

  As shown in FIG. 1, the hoisting machine 9 includes a hoisting machine main body 91 including a motor, and a driving sheave 92 that is rotatably provided on the hoisting machine main body 91 and is rotated by the driving force of the hoisting machine main body 91. And a plurality of brakes 93 provided on the hoisting machine main body 91 for braking the rotation of the driving sheave 92. The hoisting machine 9 is arranged in a state where the rotation shaft of the drive sheave 92 is horizontal. In this example, when the hoistway 1 is viewed from above, as shown in FIG. 2, the straight line A connecting the guide portions of the first and second car guide rails 5 and 6 and the axis of the driving sheave 92 are It is parallel. In this example, the hoisting machine 9 is arranged with the driving sheave 92 facing the car 2 side and the hoisting machine main body 91 facing the opposite side of the car 2, that is, the hoistway wall surface 1a side. .

  When the hoistway 1 is viewed from above, as shown in FIG. 2, the driving sheave 92 overlaps a part of the area of the first counterweight guide rail 7, and the hoisting machine main body 91 is It overlaps the rest of the area of the counterweight guide rail 7. Further, the driving sheave 92 overlaps at least a part of the area of the first car guide rail 5 when viewed from the landing 4 side.

  Each brake 93 is provided in the upper part of the hoisting machine main body 91. Each brake 93 protrudes from the outer peripheral portion of the hoisting machine main body 91. In this example, two brakes 93 are provided on a common hoisting machine main body 91. The number of brakes 93 may be one or three or more. Further, in this example, each brake 93 is disposed in the region of the hoisting machine main body 91 when viewed from above.

  When the hoisting machine 9 and the first counterweight guide rail 7 are viewed along the width direction of the hoistway 1 from the car 2 side to the counterweight 3 side, as shown in FIG. It is arranged between the first car guide rail 5 and the second counterweight guide rail 8 without overlapping either the guide rail 5 or the second counterweight guide rail 8.

  The height of the first counterweight guide rail 7 is lower than the height of each of the first car guide rail 5 and the second counterweight guide rail 8. The hoisting machine base 10 is placed on the upper end surface of the first counterweight guide rail 7. The hoisting machine base 10 is supported by the first car guide rail 5, the first counterweight guide rail 7, and the second counterweight guide rail 8. The hoisting machine 9 is supported by the hoisting machine base 10 while being placed on the upper surface of the hoisting machine base 10.

  In the hoistway 1, a plurality of rail brackets 11 that hold the first car guide rails 5 are fixed in the vertical direction at intervals. A plurality of rail brackets (not shown) that hold the second car guide rails 6 are fixed in the hoistway 1 at intervals in the vertical direction. Further, a plurality of rail brackets 12 holding the first counterweight guide rail 7 are fixed in the hoistway 1 at intervals in the vertical direction. Furthermore, a plurality of rail brackets 13 holding the second counterweight guide rail 8 are fixed in the hoistway 1 at intervals in the vertical direction.

  Of the plurality of rail brackets 11 that hold the first car guide rail 5, the uppermost rail bracket 11a, which is the rail bracket 11 at the highest position, is higher than the hoisting machine base 10 as shown in FIG. Placed in position. Of the plurality of rail brackets 13 that hold the second counterweight guide rail 8, the uppermost rail bracket 13 a that is the highest rail bracket 13 is also positioned higher than the hoisting machine base 10. Has been.

  The uppermost rail brackets 11a and 13a are disposed outside the area of each brake 93 when viewed from above. In this example, when the hoistway 1 is viewed from above, the uppermost rail brackets 11 a and 13 a are arranged outside the entire hoisting machine 9.

  A pair of car suspension wheels 16 are provided at the lower part of the car 2. One car suspension wheel 16 is disposed below one side surface of the car body, and the other car suspension wheel 16 is disposed below the other side surface of the car body. On the upper part of the counterweight 3, a counterweight suspension wheel 17 is provided. In this example, when the hoistway 1 is viewed from above, the axis of the counterweight suspension wheel 17 is inclined with respect to the straight line B connecting the respective guide portions of the first and second counterweight guide rails 7 and 8. doing. When viewed from above, the pair of car suspension wheels 16 and the counterweight suspension wheel 17 are arranged with respect to the straight line A connecting the guide portions of the first and second car guide rails 5 and 6. Are located on the same side.

  A weight side main rope end device and a car side main rope end device (not shown) are provided in the upper part of the hoistway 1. The car 2 and the counterweight 3 are suspended by a plurality of main ropes 18 which are suspension bodies. As a suspension for suspending the car 2 and the counterweight 3, for example, a plurality of belts may be used. As shown in FIG. 2, each main rope 18 has a first end 18a and a second end 18b. The first end portion 18a of each main rope 18 is connected to the car side main rope end device, and the second end portion 18b of each main rope 18 is connected to the weight side main rope end device. Each main rope 18 is sequentially wound around the pair of car suspension wheels 16, the drive sheave 92, and the counterweight suspension wheel 17 from the first end portion 18a, and reaches the second end portion 18b. Accordingly, each main rope 18 suspends the car 2 and the counterweight 3 while being wound around the pair of car suspension wheels 16, the driving sheave 92, and the counterweight suspension wheel 17. That is, the car 2 and the counterweight 3 are suspended by a 2: 1 roping method.

  As shown in FIG. 1, each main rope 18 from the driving sheave 92 toward one car suspension wheel 16 passes through the space between the first car guide rail 5 and the first counterweight guide rail 7. The main ropes 18 from the driving sheave 92 toward the counterweight suspension wheel 17 are passed through the space between the first counterweight guide rail 7 and the second counterweight guide rail 8. . When the driving sheave 92 rotates by the driving force of the hoisting machine main body 91, the car 2 and the counterweight 3 move up and down in the hoistway 1 according to the rotation of the driving sheave 92.

  Next, an operation method for performing maintenance on the hoisting machine 9 will be described. First, a maintenance person gets on the car 2 from the hall 4 on the top floor. Thereafter, the maintenance staff on the car 2 operates the maintenance operation unit provided on the car 2 to move the car 2 upward at a low speed to a work position located above the top floor.

  Thereafter, the maintenance staff on the car 2 performs maintenance on the hoisting machine 9. For example, when maintenance is performed on each brake 93, the upper side of each brake 93 is open, so that maintenance personnel on the car 2 can easily access each brake 93 from above the hoisting machine 9. it can. Thereafter, the maintenance staff on the car 2 operates the maintenance operation unit to move the car 2 downward at a low speed, and then moves from the top of the car 2 to the landing 4 on the top floor.

  In such an elevator apparatus, when the counterweight 3 side is viewed from the car 2 side, the hoisting machine 9 and the first counterweight guide rail 7 are connected to the first car guide rail 5 and the second counterweight. Since it is arranged between the guide rail 8 and the hoistway 1 is viewed from above, the driving sheave 92 overlaps a part of the area of the first counterweight guide rail 7, so that the first counterbalance The range in which the weight guide rail 7 and the driving sheave 92 are arranged can be reduced in the width direction of the hoistway 1 and the hoisting machine 9 is brought closer to the car 2 without interfering with the first car guide rail 5. Therefore, space saving of the hoistway 1 can be achieved. Further, when the hoistway 1 is viewed from above, the uppermost rail bracket 11 a that holds the first car guide rail 5 at a position higher than the position of the hoisting machine base 10 is disposed outside the area of each brake 93. Therefore, for example, even when the building is shaken by an earthquake or a strong wind, it is possible to prevent the upper end of the first car guide rail 5 from swinging greatly, and each brake 93 without causing the uppermost rail bracket 11a to get in the way. Can be easily maintained from the top of the car 2.

  Further, since the driving sheave 92 overlaps at least a part of the area of the first car guide rail 5 when viewed from the landing 4 side, the first counterweight guide rail 7, the driving sheave 92, and the second The range in which one car guide rail 5 is disposed can be reduced in the width direction of the hoistway 1, and space saving of the hoistway 1 can be further achieved.

  Further, since the axis of the drive sheave 92 is parallel to the straight line A connecting the first and second car guide rails 5 and 6 when viewed from above, the first counterweight guide rail 7, The space where the driving sheave 92 and the first car guide rail 5 are arranged can be further reduced in the width direction of the hoistway 1.

  Further, when viewed from above, the hoisting machine 9 is disposed with the hoisting machine main body 91 facing the car 2 side and the driving sheave 92 facing the opposite side of the car 2, The inclination of the main rope 18 reaching the car suspension vehicle 16 from the car 92 can be reduced. Further, maintenance on the drive sheave 92 can be facilitated from the car 2.

  The hoisting machine base 10 is supported by the first car guide rail 5, the first counterweight guide rail 7 and the second counterweight guide rail 8, so that the hoisting machine base 10 is stabilized. Can be supported.

Embodiment 2. FIG.
4 is a horizontal sectional view showing an elevator apparatus according to Embodiment 2 of the present invention. FIG. 4 is a diagram corresponding to FIG. 2 in the first embodiment. In the present embodiment, the direction of the hoisting machine 9 is different from that of the first embodiment. That is, when viewed from above, the hoisting machine 9 is arranged with the driving sheave 92 facing the side opposite to the car 2 and the hoisting machine main body 91 facing the car 2 side. Further, when the hoistway 1 is viewed from above, the driving sheave 92 overlaps a part of the area of the first counterweight guide rail 7, and the hoisting machine main body 91 is connected to the first counterweight guide rail 7. It overlaps the rest of the area. Furthermore, the hoisting machine main body 91 overlaps at least a part of the area of the first car guide rail 5 when viewed from the landing 4 side. Other configurations are the same as those in the first embodiment.

  Thus, even when the hoisting machine 9 is arranged with the driving sheave 92 facing away from the car 2 and the hoisting machine main body 91 facing the car 2 side, when viewed from above The driving sheave 92 is overlapped with a part of the area of the first counterweight guide rail 7, so that the hoistway 1 can be set in a range where the hoisting machine 9 and the first counterweight guide rail 7 are arranged. Can be reduced in the width direction. Thereby, space saving of the hoistway 1 can be achieved.

Embodiment 3 FIG.
FIG. 5 is an upper side view showing an elevator apparatus according to Embodiment 3 of the present invention. The width dimension of the hoisting machine main body 91 continuously spreads from the upper part to the lower part of the hoisting machine main body 91. Thereby, when the hoisting machine 9 is viewed from above, the lower part of the hoisting machine main body 91 protrudes outward in the width direction of the hoisting machine 9 from the area of each brake 93. When viewed from above, the uppermost rail bracket 11 a that holds the first car guide rail 5 is disposed outside the area of each brake 93 and overlaps a part of the area of the hoisting machine main body 91. Other configurations are the same as those in the first embodiment.

  In such an elevator apparatus, when viewed from above, since the uppermost rail bracket 11a overlaps a part of the area of the hoisting machine main body 91, the space in the hoistway 1 can be effectively utilized. Space saving of the hoistway 1 can be further achieved.

  In each of the above embodiments, when the hoistway 1 is viewed from above, the driving sheave 92 overlaps only a part of the area of the first counterweight guide rail 7. When viewed from, the drive sheave 92 may overlap the entire area of the first counterweight guide rail 7.

  In each of the above embodiments, when the hoistway 1 is viewed from above, the counterweight 3, the first and second counterweight guide rails 7, 8, and the hoisting machine 9 are respectively The straight line A connecting the second car guide rails 5 and 6 is arranged on the back side when viewed from the landing 4 side, but when the hoistway 1 is viewed from above, the counterweight 3, first and second Each of the two counterweight guide rails 7 and 8 and the hoisting machine 9 may be arranged on the near side with respect to the straight line A when viewed from the landing 4 side.

  In each of the above embodiments, the plurality of brakes 93 are provided only on the upper part of the hoisting machine main body 91. However, the plurality of brakes 93 may be provided only on the lower part of the hoisting machine main body 91. A brake 93 may be provided on each of the upper part and the lower part of the upper machine body 91. Even if the brake 93 is provided at the lower part of the hoisting machine main body 91, the maintenance on the brake 93 can be facilitated from above the car 2 without the uppermost rail bracket 11a getting in the way. That is, if the brake 93 is provided on at least one of the upper part and the lower part of the hoisting machine main body 91, the maintenance on the brake 93 can be facilitated from above the car 2.

Claims (7)

A car with a car suspension car that can be raised and lowered in the hoistway,
First and second car guide rails provided in the hoistway for guiding the car;
A counterweight suspension vehicle is provided, and a counterweight capable of moving up and down in the hoistway,
First and second counterweight guide rails provided in the hoistway for guiding the counterweight;
A hoisting machine main body, a driving sheave rotatably provided on the hoisting machine main body, and a brake that brakes rotation of the driving sheave, provided at an upper portion in the hoistway, A hoisting machine for raising and lowering the car and the counterweight;
A hoisting machine base that supports the hoisting machine, and a suspension body that is sequentially wound around the car suspension wheel, the driving sheave, and the counterweight suspension car and that suspends the car and the counterweight. Prepared,
The side surface of the car is opposed to the hoistway wall surface through a space in the width direction of the hoistway,
The counterweight and the hoisting machine are arranged in the space when viewed from above,
The brake is provided on at least one of an upper part and a lower part of the hoisting machine main body,
The first car guide rail is held by the uppermost rail bracket at a position higher than the position of the hoisting machine base,
The uppermost rail bracket is an elevator apparatus arranged outside the area of the brake when viewed from above.   The elevator apparatus according to claim 1, wherein the uppermost rail bracket overlaps a part of a region of the hoisting machine main body when viewed from above.   The elevator apparatus according to claim 1 or 2, wherein the driving sheave overlaps at least a part of a region of the first car guide rail when viewed from a landing side.   The elevator apparatus according to any one of claims 1 to 3, wherein an axis of the drive sheave is parallel to a straight line connecting the first and second car guide rails when viewed from above. .   The said hoisting machine is arrange | positioned in the state which orient | assigned the said driving sheave to the said car side and the said hoisting machine main body to the other side when it saw from the top. The elevator apparatus as described in any one of 4.   The said hoisting machine is arrange | positioned in the state which orient | assigned the said hoisting machine main body to the said car side and the said drive sheave toward the other side when it sees from the top. The elevator apparatus as described in any one of 4.   7. The hoisting machine base is supported by the first car guide rail, the first counterweight guide rail, and the second counterweight guide rail. The elevator apparatus as described in the item.

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