JPWO2018225140A1 - Elevator - Google Patents

Abstract

The elevator includes a hoist having a sheave, a machine beam, a main rope, a car, a counterweight, a car side return pulley, and a weight side return pulley. In the main rope, a first rope end which is one end in the axial direction and a second rope end which is the other end in the axial direction are fixed to the machine beam. The machine beam is arranged between the car and the wall of the hoistway in the horizontal direction. The hoist is fixed to the upper surface of the machine beam in the elevating direction, and the weight side return pulley is installed on the lower surface of the machine beam in the elevating direction.

Description

  The present invention relates to an elevator having a car that moves up and down in a hoistway provided in a building structure.

  2. Description of the Related Art Conventionally, an elevator includes a ride, a counterweight, a main rope that is hung on a pulley provided on the ride and the counterweight, and a hoist around which the main rope is wound. There is also known a 4: 1 roping type elevator in which a main rope is hung twice on a riding weight and a counterweight.

  As a conventional 4: 1 roping type elevator, for example, there is an elevator described in Patent Document 1. In Patent Literature 1, a drive unit and a first deflecting roller are arranged on a carrier. Furthermore, Patent Document 1 describes that a first cable fixing point and a second cable fixing point are arranged on a carrier.

  Another example of a conventional 4: 1 roping type elevator is disclosed in Patent Document 2, for example. Patent Literature 2 describes that a car-side turning vehicle device and a counterweight side-turning vehicle device are arranged at an upper portion in a hoistway. Then, a portion of the main rope extending from the first car suspension wheel device to the first end and a portion of the main rope extending from the second car suspension wheel device to the drive sheave are within a vertical projection plane. It is described that they are arranged on the opposite sides with respect to the widthwise central portion of the car.

JP 2005-263490 A WO 2003/064309

  However, in the techniques described in Patent Literature 1 and Patent Literature 2, the hoist is arranged so as to protrude upward in the vertical direction of the car. For this reason, the car cannot be moved up and down to the vicinity of the hoist, and maintenance work and parts replacement work have become very complicated.

  Furthermore, in the technique described in Patent Literature 1, the first deflecting roller indicating the weight-side return pulley is installed at the same height as the hoist. Therefore, in order to perform maintenance work or part replacement work, it is necessary to displace the first deflecting roller and the hoist in a horizontal direction. As a result, in the technique described in Patent Literature 1, there is a risk that the length of the carrier supporting the hoist and the first deflecting roller is increased and the dimension of the hoistway is increased.

  An object of the present invention is to provide an elevator that suppresses an increase in the size of a hoistway and that can easily perform maintenance work and part replacement work in consideration of the above problems.

  In order to solve the above-mentioned problems and achieve the object, an elevator is provided with a hoist having a sheave, a machine beam, a main rope, a car, a counterweight, a car-side return pulley, and a weight-side return. And a pulley. The machine beam supports the hoist. The main rope is wrapped around the sheave. In the main rope, a first rope end which is one end in the axial direction and a second rope end which is the other end in the axial direction are fixed to the machine beam. The car has a plurality of car-side pulleys on which a main rope is hung, and moves up and down the hoistway. The counterweight has a first weight side pulley and a second weight side pulley on which the main rope is hung. The car side return pulley is installed on the opposite side of the machine beam with the car in between, and the main rope is hung. The weight side return pulley is installed on the machine beam, and a main rope hung on the first weight side pulley and the second weight side pulley is hung. The machine beam is arranged between the car and the wall of the hoistway in the horizontal direction. The hoist is fixed to the upper surface of the machine beam in the elevating direction, and the weight side return pulley is installed on the lower surface of the machine beam in the elevating direction.

  According to the elevator having the above configuration, it is possible to suppress an increase in the dimension of the hoistway, and to easily perform the maintenance and inspection work and the part replacement work.

It is a schematic structure figure showing the elevator concerning an example of an embodiment. It is a side view showing composition of a counterweight side in an elevator concerning an example of an embodiment. It is a side view showing composition of an elevator and a car side concerning an example of an embodiment. It is a top view of the elevator concerning an example of an embodiment.

  Hereinafter, an elevator according to an embodiment will be described with reference to FIGS. In the drawings, common members are denoted by the same reference numerals.

1. First, a configuration of an elevator according to an embodiment (hereinafter, referred to as “this example”) will be described with reference to FIGS. 1 to 4.
FIG. 1 is a schematic configuration diagram illustrating a configuration example of the elevator of the present example. FIG. 2 is a side view showing a configuration of a counterweight side in the elevator of the present example, and FIG. 3 is a side view showing a configuration of a car side in the elevator of the present example. FIG. 4 is a plan view showing the elevator of this example.

  The elevator 1 shown in FIG. 1 is an elevator in which a car moves up and down in one hoistway 110 formed in a building structure. The elevator 1 shown in FIG. 1 is a 4: 1 roping type elevator.

  As shown in FIGS. 1 and 2, the elevator 1 includes a car 120 on which people and luggage are placed, a counterweight 140, a main rope 130, a car side return pulley 13, a weight side return pulley 14, An upper machine 100 is provided. As shown in FIGS. 2 and 3, the elevator 1 includes a machine beam 150 installed on the top of the hoistway 110, two two car-side guide rails 160A and 160B, and two weight-side guide rails 170A. , 170B.

[Riding basket]
The car 120 is formed in a hollow substantially rectangular parallelepiped shape. As shown in FIG. 4, an opening is provided on one surface of the car 120. The car 120 is provided with a car-side door 121 for opening and closing the opening. The car-side door 121 of the car 120 faces the entrance 201 provided in the building structure. A building-side door 202 is attached to the entrance 201 so as to be openable and closable.

  Here, a direction orthogonal to the direction in which the car 120 is raised and lowered, and also orthogonal to the direction in which the car-side door 121 and the building-side door 202 face each other is defined as a first direction X. Further, a direction orthogonal to the vertical direction of the car 120 and also orthogonal to the first direction X, that is, a direction parallel to the direction in which the car door 121 and the building door 202 face each other is defined as a second direction Y. .

  Car-side guide rails 160A and 160B are arranged on both sides of the car 120 in the first direction X. Here, a line connecting the two car-side guide rails 160A and 160B along the first direction X is referred to as a guide line 160C.

  As shown in FIGS. 2 and 3, the car-side guide rails 160A and 160B are erected in the hoistway 110 along the elevating direction. The car 120 is slidably supported by the car-side guide rails 160A and 160B. Then, the car 120A moves in the elevating direction along the car-side guide rails 160A and 160B.

  As shown in FIG. 3, a work frame 123 is provided above the car 120 in the elevating direction. A first car-side pulley 15, a second car-side pulley 16, a third car-side pulley 17, and a fourth car-side pulley 18 are rotatably provided below the car 120 in the elevating direction. I have. The axial directions of the first car-side pulley 15, the second car-side pulley 16, the third car-side pulley 17, and the fourth car-side pulley 18 are arranged in parallel with the second direction Y.

  The first car side pulley 15 and the third car side pulley 17 are disposed at one end of the car 120 in the first direction X, and the second car side pulley 16 and the fourth car side pulley 18 It is arranged at the other end in the first direction X. The first car side pulley 15 and the third car side pulley 17 are opposed in the second direction Y, and the second car side pulley 16 and the fourth car side pulley 18 are facing in the second direction Y.

  Further, the first car-side pulley 15 and the second car-side pulley 16 are arranged to face each other in the first direction X with the car 120 interposed therebetween. Further, the third car-side pulley 17 and the fourth car-side pulley 18 are arranged to face each other in the first direction X with the car 120 interposed therebetween.

  Further, the distance t1 in the second direction Y from the first car-side pulley 15 to the guide line 160C in the second car-side pulley 16 and the distance to the guide line 160C in the third car-side pulley 17 and the third car-side pulley 18 are determined. The distance t2 in the second direction Y is set to the same length. As a result, the car 120 is supported in a well-balanced manner by the two car-side guide rails 160A and 160B, the first car-side pulley 15, the second car-side pulley 16, the third car-side pulley 17, and the fourth car-side pulley 18. be able to.

  A machine beam 150 is arranged on one side of the first direction X of the car 120, and a car side return pulley 13 is arranged on the other side of the first direction X of the car 120. I have. The machine beam 150 and the car side return pulley 13 are installed on the top of the hoistway 110 in the elevating direction.

  The car side return pulley 13 is arranged at the top of the hoistway 110 between the wall surfaces 111 of the hoistway 110 of the car 120. The car-side return pulley 13 is disposed between the second car-side pulley 16 and the fourth car-side pulley 18 above the elevating direction. Further, the axial direction of the car-side return pulley 13 is arranged in parallel with the first direction X.

[Machine beam]
The machine beam 150 is arranged at the top of the hoistway 110 between the wall surfaces 111 of the hoistway 110 of the car 120. Therefore, the machine beam 150 is disposed outside the first direction X and the second direction Y in the elevator direction of the car 120. The machine beam 150 is provided with the hoist 100 and the weight-side return pulley 14. Further, a first rope end 11 which is one end of the main rope 130 in the axial direction and a second rope end 12 which is the other end of the main rope 130 in the axial direction are fixed to the machine beam 150.

[Hoist]
As shown in FIGS. 2 and 3, the hoisting machine 100 is supported on the upper surface 150 a of the machine beam 150, and the weight-side return pulley 14 is rotatably supported on the lower surface 150 b of the machine beam 150. The axial direction of the weight-side return pulley 14 is arranged parallel to the first direction X. Accordingly, it is possible to prevent the hoisting machine 100 from hindering the maintenance and inspection of the weight-side return pulley 14 and the replacement operation. It can be carried out.

  As shown in FIGS. 2 and 4, the hoisting machine 100 is disposed on the car 120 side of the machine beam 150, that is, on the other end in the first direction X. The weight-side return pulley 14 is disposed on the wall surface 111 side of the hoistway 110 in the machine beam 150, that is, at one end in the first direction X.

  The hoist 100 has a sheave 101 around which a main rope 130 is wound. The axial direction of the sheave 101 is arranged parallel to the first direction X. The hoist 100 is fixed to the machine beam 150 with the sheave 101 facing the car 120, which is opposite to the wall surface 111 of the hoistway 110, that is, the other side of the first direction X.

  In addition, the sheave 101 is disposed on one side in the first direction X, that is, on the wall surface 111 side of the hoistway 110, relative to the car-side guide rail 160A that slidably supports the car 120. That is, it is possible to prevent the sheave 101 from interfering with the car 120. As a result, the car 120 can be raised to the vicinity of the hoist 100. Maintenance and inspection work of the hoisting machine 100 and replacement work of parts can be easily performed. Furthermore, since the car 120 can be raised to the vicinity of the hoist 100, an increase in the dimension from the hoist 100 to the ceiling of the hoistway 110 can be suppressed.

  The first rope end 11 is arranged at one end of the machine beam 150 in the second direction Y, and the second rope end 12 is arranged at the other end of the machine beam 150 in the second direction Y. . Therefore, the hoisting machine 100 and the weight side return pulley 14 are arranged between the first rope end 11 and the second rope end 12.

  Further, the first rope end 11 and the second rope end 12 are arranged on the car beam 120 side of the machine beam 150, that is, on the other end in the first direction X, similarly to the hoisting machine 100. Further, an interval h3 of the first rope end 11 to the car 120 in the first direction X and an interval h4 of the second rope end 12 to the car 120 in the first direction X are set to be equal. I have.

  Thus, the first rope end 11, the second rope end 12, and the hoisting machine 100 can be brought closer to the car 120, so that maintenance and inspection work and parts replacement work can be easily performed from the car 120.

  As described above, in the elevator 1 of the present example, the first rope end 11, the second rope end 12, and the weight side return pulley 14 are collectively arranged on the machine beam 150 to which the hoisting machine 100 is fixed. The maintenance and inspection work of the hoisting machine 100, the first rope end 11, the second rope end 12, and the weight side return pulley 14 and the replacement work of the equipment can be performed collectively.

  The main rope 130 hung from the first rope end 11 is hung on the first weight side pulley 21 provided on the counterweight 140.

[Balance weight]
The counterweight 140 is disposed on one side of the car 120 in the first direction X. The counterweight 140 is slidably supported by two weight-side guide rails 170A and 170B. The two weight-side guide rails 170A, 170B are arranged on both sides of the counterweight 140 in the second direction Y. Here, a line connecting the two weight-side guide rails 170A and 170B along the second direction Y is referred to as a guide line 170C.

  The two weight-side guide rails 170A and 170B are erected in the hoistway 110 in the hoisting direction. Thus, the counterweight 140 moves in the elevating direction along the weight-side guide rails 170A and 170B.

  The counterweight 140 has a first weight-side pulley 21 and a second weight-side pulley 22. The first weight side pulley 21 and the second weight side pulley 22 are rotatably supported on the upper part of the counterweight 140 in the elevating direction. The first weight side pulley 21 is disposed at the other end of the counterweight 140 in the second direction Y, and the second weight side pulley 22 is disposed at the one end of the counterweight 14 in the second direction Y. ing.

  As shown in FIG. 4, the axis 21c of the first weight-side pulley 21 and the axis 22c of the second weight-side pulley 22 are positioned with respect to the first direction X, the second direction Y, and the guide line 170C. It is arranged at an angle. The axis 21c of the first weight side pulley 21 and the axis 22c of the second weight side pulley 22 are arranged in parallel with each other.

  The guide wire 170 </ b> C passes through the axis 21 c of the first weight side pulley 21 and the axis 22 c of the second weight side pulley 22. Thus, the counterweight 140 can be supported by the two weight-side guide rails 170A, 170B, the first weight-side pulley 21, and the second weight-side pulley 22 in a well-balanced manner.

2. Next, the order of hanging the main ropes 130 will be described.
The first rope end 11 of the main rope 130 hangs downward from the machine beam 150 in the elevating direction. The main rope 130 hanging from the machine beam 150 is hung on the third car-side pulley 17. Then, the main rope 130 hung on the third car-side pulley 17 passes below the elevating direction of the car 120 along the first direction X, and is hung on the fourth car-side pulley 18.

  The main rope 130 hung on the fourth car-side pulley 18 rises in the elevating direction and is hung on the car-side return pulley 13. The main rope 130 hangs down from the car side return pulley 13 along the ascending and descending direction, is hung on the second car side pulley 16, passes below the car 120 in the ascending and descending direction along the first direction X, It is hung on one car side pulley 15.

  The main rope 130 hung on the first car side pulley 15 rises in the elevating direction and is wound around the sheave 101 of the hoisting machine 100. The main rope 130 wound around the sheave 101 hangs down along the elevating direction, and is hung on the second weight side pulley 22 of the counterweight 140. The main rope 130 rises from the second weight side pulley 22 in the elevating direction, and is hung on the weight side return pulley 14.

  The main rope 130 hung on the weight side return pulley 14 hangs down in the elevating direction and is hung on the first weight side pulley 21 of the counterweight 140. Then, the main rope 130 hung on the first weight side pulley rises along the elevating direction, and the second rope end 12 as the other end is fixed to the machine beam 150. As a result, when the hoist 100 is driven, the car 120 and the counterweight 140 move in the elevating direction.

3. Next, the detailed positional relationship between the pulleys of the elevator 1 having the above-described configuration will be described. Here, the end of each pulley where the main rope 130 hung around enters and exits is referred to as a first lead-in / out part and a second lead-out / in part. The first lead-in / out part and the second lead-in / out part are located at both ends in the radial direction of each pulley.

  The first lead-in / out portion 21a of the first weight-side pulley 21 and the second lead-in / out portion 22b of the second weight-side pulley 22 are arranged closer to the car 120 than the wall surface 111 of the hoistway 110 in the first direction X. ing.

  Further, the first lead-in / out part 21a of the first weight-side pulley 21 and the second lead-in / out part 22b of the second weight-side pulley 22 are in the first direction X more than the guide line 170C of the two weight-side guide rails 170A and 170B. At a position close to the car 120. The first lead-in / out portion 21a of the first weight-side pulley 21 is disposed below the second rope end 12 in the elevating direction. Therefore, the second rope end 12 can be closer to the car 120 than the weight side guide rails 170A and 170B, and maintenance work and replacement of parts can be easily performed.

  As described above, the distance h3 from the first rope end 11 to the car 120 in the first direction X is equal to the distance h4 from the second rope end 12 to the car 120 in the first direction X. Is set. Therefore, the first rope end 11 can also be closer to the car 120 than the weight-side guide rails 170A and 170B, so that maintenance and inspection work and parts replacement work can be easily performed.

  Furthermore, by bringing the second rope end 12 closer to the car 120, the interval t3 in the second direction Y from the second rope end 12 to the wall surface 111 can be shortened. As a result, it is also possible to suppress the dimension of the hoistway 110 from increasing.

  The first weight side pulley 21 and the second weight side pulley 22 are arranged such that their axes 21c, 22c are inclined with respect to the first direction X, the second direction Y, and the guide line 170C. . Thereby, the first car body 120 and the first wall surface 111 of the hoistway 110 are more likely to be located than the shafts 21 c and 22 c of the first weight pulley 21 and the second weight pulley 22 are arranged in parallel with the second direction Y. The interval h1 in the direction X can be shortened.

  Further, the second lead-in / out part 21b of the first weight-side pulley 21 and the first lead-in / out part 22a of the second weight-side pulley 22 are in the first direction X more than the guide line 170C of the two weight-side guide rails 170A and 170B. At a position close to the wall surface 111. Therefore, the interval between the two weight-side guide rails 170A and 170B can be reduced, and the length h2 of the counterweight 140 in the first direction X can be increased.

  Also, by using the two weight-side guide rails 170A and 170B as a reference, the positions and inclinations of the first weight-side pulley 21 and the second weight-side pulley 22 can be easily determined.

  Further, a first lead-in / out portion 14a of the side-turning pulley 14 is disposed above the second lead-in / out portion 21b of the first weight-side pulley 21 in the elevating direction. A second lead-in / out part 14b of the weight-side return pulley 14 is arranged above the first lead-in / out part 22a of the second weight-side pulley 22 in the elevating direction.

  As described above, by disposing the shaft centers 21c and 22c of the first weight-side pulley 21 and the second weight-side pulley 22 so as to be inclined with respect to the first direction X and the second direction Y, the weight is turned back. The pulley 14 can be brought closer to the car 120 in the first direction X. Thereby, the maintenance and inspection work of the weight side return pulley 14 and the replacement work of parts can be easily performed.

  In addition, as shown in FIGS. 2 and 4, the weight-side return pulley 14 can be disposed below the machine beam 150 in the elevating direction of the hoist 100. As a result, the length of the machine beam 150 in the second direction Y can be shortened, and the dimension of the hoistway 110 on which the machine beam 150 is installed can be suppressed from increasing.

  Further, a first lead-in / out part 101a of the sheave 101 of the hoisting machine 100 is disposed above the second lead-in / out part 22b of the second weight pulley 22 in the elevating direction. Further, a first lead-in / out portion 15a of the first car-side pulley 15 is disposed below the second lead-in / out portion 101b of the sheave 101 in the elevating direction. The second lead-in / out part 15b of the first car-side pulley 15 and the first lead-in / out part 16a of the second car-side pulley 16 are opposed in the first direction X.

  The first lead-in / out part 13a of the car-side return pulley 13 is disposed above the second lead-in / out part 16b of the second car-side pulley 16 in the vertical direction. A first lead-in / out portion 18a of the fourth car-side pulley 18 is disposed below. Then, the second lead-in / out part 18b of the fourth car-side pulley 18 is opposed to the first lead-in / out part 17a of the third car-side pulley 17 in the first direction X. The first rope end 11 is disposed above the second lead-in / out portion 17b of the third car pulley 17 in the elevating direction.

  The first lead-in / out part 15a of the first car-side pulley 15 and the second lead-in / out part 17b of the third car-side pulley 17 face each other in the second direction Y. Therefore, the interval h5 in the first direction X from the second lead-in / out portion 101b of the sheave 101 of the hoisting machine 100 to the car 120 is set in the first direction X from the first rope end 11 to the car 120. Can be made substantially equal to the interval h3. Thereby, the intervals between the sheave 101, the first rope end 11, and the second rope end 12 of the hoisting machine 100 to the car 120 can be made substantially equal. As a result, the work on the hoisting machine 100, the first rope end 11, and the second rope end 12 can be easily performed from the car 120.

  In the above-described embodiment, an example in which the car is moved up and down in the vertical direction, which is the vertical direction, has been described. However, the present invention is not limited to this.

  In this specification, words such as "parallel" and "orthogonal" are used, but these do not mean only strictly "parallel" and "orthogonal" but include "parallel" and "orthogonal". Further, the state may be “substantially parallel” or “substantially orthogonal” within a range in which the function can be further exhibited.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 11 ... 1st rope end, 12 ... 2nd rope end, 13 ... Car side return pulley 14 ... Weight side return pulley, 14a ... 1st lead-in / out part, 14b ... 2nd lead-in / out part, 15, 16, 17 , 18 ... Car side pulley, 21 ... First weight side pulley, 21a ... First lead-in / out part, 21b ... Second lead-in / out part, 21c ... Shaft center, 22 ... Second weight-side pulley, 22a ... First lead-in / out part, 22b ... second lead-in / out part, 22c ... shaft center, 100 ... hoisting machine, 101 ... sheave, 101a ... first lead-in / out part, 101b ... second lead-in / out part, 110 ... hoistway, 111 ... wall surface, 120 ... car, 121: car side door, 130: main rope, 150: machine beam, 150a: upper surface part, 150b: lower surface part, 160A, 160B: car side guide rail, 1 0A, 170B ... counterweight-side guide rails, 170C ... guide lines, 201 ... entrance, 202 ... building side door, X ... first direction, Y ... second direction

Claims (6)

A hoist having a sheave;
A machine beam supporting the hoist;
A main rope that is wound around the sheave and has a first rope end that is one end in the axial direction and a second rope end that is the other end in the axial direction fixed to the machine beam;
A plurality of car-side pulleys on which the main rope is hung, and a car that moves up and down the hoistway;
A counterweight having a first weight-side pulley and a second weight-side pulley on which the main rope is hung;
A car-side turning pulley, which is installed on the opposite side of the machine beam with the car interposed therebetween and on which the main rope is hung,
A weight-side return pulley that is installed on the machine beam, and on which a main rope hung on the first weight-side pulley and the second weight-side pulley is hung,
The machine beam is disposed between the car and a wall surface of the hoistway in a horizontal direction,
The hoist is fixed to the upper surface of the machine beam in the elevating direction,
The elevator, wherein the weight-side return pulley is installed on a lower surface of the machine beam in the elevating direction. A second direction orthogonal to the elevator direction of the car, and a first direction in which the car-side door is also orthogonal to the direction facing the building-side door of the building structure; In the direction
The hoist, the first rope end and the second rope end are disposed at an end of the machine beam closer to the car than an end of the hoistway in a first direction of the machine beam,
The elevator according to claim 1, wherein the weight-side return pulley is disposed at an end of the machine beam closer to a wall surface of the hoistway than an end of the machine beam on the car side in the first direction. The elevator according to claim 2, wherein axes of the first weight-side pulley and the second weight-side pulley are arranged so as to be inclined in both the first direction and the second direction. The elevator according to claim 3, wherein the first weight-side pulley and the second weight-side pulley are arranged so that their axes are parallel to each other. The first weight-side pulley has a lead-in / out portion on which the main rope hanging from the second rope end is hung,
The said lead-in part of the said 1st weight side pulley is arrange | positioned closer to the said car in the said 1st direction rather than the weight side guide rail which slidably supports the said counterweight. Elevator. The elevator according to claim 2, wherein an axis of the sheave of the hoist and an axis of the weight-side return pulley are arranged in parallel with the first direction.

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