JP5473961B2 - Elevator car - Google Patents

Description

  The present invention relates to an elevator car, and more particularly, to an elevator car having a structure in which a sheave support frame is disposed together with an upper beam on the car.

  Conventionally, in an elevator car, the sheave support frame that supports the sheave for suspending the car is provided on the lower surface of the upper beam that constitutes the car frame (Patent Document 1) or the lower beam under the car. It was provided on the lower surface (Patent Document 2).

  Of these, FIG. 11 shows a car frame in which the sheave support frame is configured on the lower surface of the upper beam. The car 10 includes a car body 1, a car frame 3 that supports the car body 1, and an upper beam 2 that is connected to the car frame and disposed above the car body 1.

The upper beam 2 extends horizontally at a predetermined interval from the upper surface of the car body 1. A sheave support beam 5 is attached to the lower surface of the upper beam 2, and car-side sheaves 4 and 4 are rotatably attached to both ends of the sheave support beam 5.
JP 2004-338907 A JP 2006-225133 A

  As described above, when the sheave support frame is formed on the upper beam, a sufficient space for attaching the sheave support beam is necessary on the upper surface of the car body. However, in recent years, hoisting machines are not located in machine rooms separated from elevators, and machine room-less elevators arranged in hoistways are becoming mainstream. In this machine roomless elevator, it is sometimes difficult to secure the distance from the top floor to the hoistway ceiling, that is, the overhead dimensions of the car. In addition, since various devices and hoistway equipment are arranged on the car, a car frame is used to secure the distance from the equipment on the car to the equipment near the hoistway ceiling, that is, the top clearance. In some cases, the height had to be lowered. Therefore, in such a situation, when dealing with space saving, it is difficult to configure the sheave support frame on the lower surface of the upper beam.

  Therefore, the object of the present invention is to solve the problems of the prior art, and even if it is difficult to secure the necessary top clearance and the car frame height has to be lowered, the upper beam and sheave support beam on the car. It is an object of the present invention to provide an elevator car that can be configured as described above and can increase the degree of freedom of various layouts and ropings.

In order to achieve the above object, the present invention suspends a car that can be lifted and lowered along a guide rail, a balance weight that can be lifted and lowered along a guide rail for a balance weight, and the car and the balance weight. And a hoisting machine around which the rope is wound, a car frame for supporting the main body of the car, and a horizontal and elevating position above the main body of the car An upper beam connected to the car frame so as to extend in parallel with the road width direction, guide means provided on a side surface of an end of the upper beam and slidable with the guide rail, and provided at both ends of the upper beam A plurality of car sheaves around which the rope is wound, and an angle formed by a rotating shaft of the hoisting machine and a depth direction of the car is in a range larger than 0 and smaller than 90 ° The upper beam also serves as a sheave support part for supporting a pair of car sheaves or has an integral structure, and the rotation axis of the car sheave is arranged to be inclined with respect to the upper beam, it is characterized in that the cage-side sheaves is to be supported by the side surface or the inner portion.

  According to the present invention, since the top clearance between the on-car equipment such as a hoisting machine and the hoistway equipment can be enlarged, the car frame height must be lowered in order to secure the necessary top clearance. Even under circumstances, it is possible to construct a sheave support structure on the car without any trouble, and to expand the degree of freedom of various layouts and ropings.

1 shows an elevator car according to a first embodiment of the present invention, FIG. 1 (a) shows a side view of the car, and FIG. 1 (b) is a plan view of the car viewed from above a hoistway according to the present invention. It is a perspective view which shows one Example. 2 shows an elevator car according to a second embodiment of the present invention, FIG. 2 (a) shows a side surface of the car, and FIG. 2 (b) is a cross-sectional plan view of the car viewed from above the hoistway. FIG. 3 shows an elevator car according to a third embodiment of the present invention, FIG. 3 (a) shows a side surface of the car, and FIG. 3 (b) is a plan view of the car viewed from above the hoistway. The other example of a structure of the elevator car by 3rd Embodiment of this invention is shown, Fig.4 (a) showed the side of the car, FIG.4 (b) looked at the car from the hoistway. It is a top view. The other example of a structure of the elevator car by 3rd Embodiment of this invention is shown, Fig.5 (a) showed the side of the car, FIG.5 (b) looked at the car from the hoistway. It is a top view. The other example of a structure of the elevator car by 3rd Embodiment of this invention is shown, Fig.6 (a) showed the side of the car, FIG.6 (b) looked at the car from the hoistway. It is a top view. The elevator car by 4th Embodiment of this invention is shown, Fig.7 (a) shows the side surface of a car, FIG.7 (b) is the top view which looked at the car from the hoistway. The other example of a structure of the elevator car by 4th Embodiment of this invention is shown, Fig.8 (a) showed the side of the car, FIG.8 (b) looked at the car from the hoistway. It is a top view. It is the top view which showed the other structural example of the elevator car by 4th Embodiment of this invention, and looked at the passenger car from the hoistway. It is the top view which showed the passenger car of the elevator by 5th Embodiment of this invention, and looked at the passenger car from the hoistway. It is a perspective view which shows the cage structure of the conventional elevator.

DESCRIPTION OF EMBODIMENTS Embodiments of an elevator car structure according to the present invention will be described below with reference to the accompanying drawings.
First embodiment
1 shows the elevator car structure according to the first embodiment of the present invention, FIG. 1 (a) shows a side view of the car, and FIG. 1 (b) shows the car viewed from above the hoistway. It is a top view.

  In FIG. 1, the car body 1 is provided on a car floor 6. The car floor 6 is attached to the car frame 3 and the lower beam 7 and supports the car body 1. A car door 100 is disposed on one side of the car body 1 (the elevator hall side, leftward in FIG. 1A).

  At the upper end of the car frame 3, the upper beam 12 is horizontally spaced from the upper surface of the car body 1 with a predetermined gap and horizontally with respect to the width direction of the hoistway 103 (left and right in FIG. 1B). Extending in parallel to each other and supported by the end of the car frame 3. The upper beam 12 has a structure that also serves as a sheave support beam as will be described later.

  In FIG. 1 (b), a pair of guide rails 13a and 13b for guiding the raising and lowering of the car are arranged on the left and right sides of the car frame 3. In this embodiment, the guide rails 13a and 13b are arranged in a stepwise manner in the vertical direction in FIG. 1 (b) so as to sandwich the upper beam 12 and obliquely in the hoistway width direction. Guide devices 14 a and 14 b slidable with respect to the guide rails 13 a and 13 b are provided on end side surfaces of the upper beam 12. A landing door 101 is arranged on the elevator landing side so as to face the car door 100.

  The hoisting machine 15 is disposed on the upper side in the hoistway 103 and is provided, for example, near the top floor or near the hoistway ceiling. The hoisting machine 15 has a long cylindrical shape, and has a rotating shaft 106 of the hoisting machine 15 so as to be parallel to the longitudinal direction thereof. One end of the hoisting machine 15 is provided with a traction sheave 105 around which a rope is wound, and the traction sheave 105 is arranged so as to come to the car door 100 side of the car.

  The rotating shaft 106 of the hoisting machine 15 is arranged with a predetermined angle θ with respect to the depth direction of the car and is in a range larger than 0 and smaller than 90 °. The hoisting machine 15 is arranged so as to overlap either the space 107 in which the car 1 can be raised or lowered or a space vertically above the space 107 when the hoistway 103 is viewed from above. That is, when the cross section of the hoistway is viewed as shown in FIG. 1B, the car 1 and the hoist 15 are arranged so as to overlap each other. The rotating surface of the traction sheave 105 of the hoisting machine 15 and the rotating surfaces of the car-side sheaves 4a and 4b are arranged so as to be substantially parallel.

  Car-side sheaves 4 a and 4 b are rotatably attached to both ends of the upper beam 12. The rotational axes of the sheaves 4 a and 4 b are orthogonal to the longitudinal direction of the upper beam 12, and both ends of the sheaves 4 a and 4 b are arranged so as to protrude to the outside of the upper beam 12. That is, the sheaves 4a and 4b are both supported by the upper beam 12 by the rotation shaft.

  The rope 104 wound around the car-side sheaves 4a and 4b is driven by a hoisting machine 15 disposed at the position shown in FIG.

  Reference numerals 16a and 16b denote balance weight guide rails for guiding the raising and lowering of the balance weight (not shown). The balance weight guide rails 16a and 16b or the balance weight are arranged in parallel to the depth direction of the hoistway (the left wall surface in FIG. 1B).

  In this embodiment, instead of providing a sheave support beam that supports the sheaves 4a and 4b separately from the upper beam 12, the sheaves 4a and 4b are attached to the upper beam 12 so that the upper beam 12 itself also serves as the sheave support beam. It is configured. Such a configuration of the upper beam 12 provides the following effects.

  First, as shown in FIG. 11, unlike the conventional structure in which the sheave support beam is provided on the lower surface of the upper beam, the upper beam 12 itself also serves as the sheave support beam, so that the upper beam 12 or the sheave support is supported. The car frame height can be kept low by the height of the beam. As a result, the top clearance with the on-car equipment such as the hoisting machine 15 and the hoistway equipment can be expanded, so that the car frame height must be lowered in order to secure the necessary top clearance. Even in such a case, it is possible to configure the sheave support structure on the car without hindrance, and to increase the degree of freedom of various layouts and ropings. Further, since the sheave support structure can be reliably configured on the car, there is an advantage that the pit size can be reduced.

  Secondly, the hoistway device is arranged so as to overlap the car projection surface, for example, when the hoisting machine 15 is arranged so as to overlap with the car when viewed from above, because the car frame height can be lowered. It is possible to secure a larger work space on the car when the car is landing on the uppermost part of the hoistway 103.

  Thirdly, since the upper beam 12 also serves as the sheave support beam, the weight of the car frame can be reduced by the weight of the sheave support beam, thereby reducing the weight of the counterweight and the overall elevator system. It will contribute to high efficiency and energy saving. Moreover, the number of man-hours for installing the sheave support beam can be reduced by using the sheave support beam.

  In the case of the configuration example of FIG. 1, instead of arranging the car-side sheaves 4a, 4b in parallel with the hoistway width direction, the car guide rails 13a, 13b and the guide devices 14a, 14b are diagonally opposite. It is arranged. In this case, in relation to the guide rails 16a and 16b for guiding the counterweight, as shown in FIG. 1, the distance between the rails of the guide rails 16a and 16b can be increased by bringing one guide rail 16a closer to the landing side. Since it can be taken, the weight loading amount is increased, and it becomes easy to cope with the increase in the car weight by the option correspondence.

Second embodiment
Next, FIG. 2 shows a car structure according to a second embodiment of the present invention.
In the second embodiment, the upper beam 12 and the sheave support beam 20 are formed as separate structural members, and the sheave support beam 20 is fixed to the side surface of the upper beam 12 parallel to the width direction of the hoistway 103. Is an integral structure. A pair of car-side sheaves 4a and 4b are rotatably supported at both ends of the sheave support beam 20, respectively. In this case, one end of each rotating shaft of the sheaves 4 a and 4 b is supported by the upper beam 12, and the other end is supported by the sheave support beam 20. The guide rails 13 a and 13 b that guide the raising and lowering of the car are disposed so as to face the center line of the upper beam 12. The arrangement relationship between the hoisting machine 15 and the car is the same as that of the first embodiment of FIG.

  In the second embodiment as described above, by configuring the sheave support beam 20 on the side surface of the upper beam 12, the same effect as the first embodiment can be obtained, and the flexibility of various layouts and ropings can be increased by increasing the top clearance. The advantages of lowering the car frame height and the effect of reducing the car frame weight can be obtained.

Third embodiment
Next, FIGS. 3 to 6 show a car structure according to a third embodiment of the present invention.
In this third embodiment, as shown in FIG. 3, both ends of one side surface of the upper beam 12 on the depth side of the hoistway are formed in order to integrate the portions supporting the car-side sheaves 4a and 4b with the upper beam 12. Support brackets 21 and 21 are attached to the respective sections, and a pair of car-side sheaves 4a and 4b via the support brackets 21 and 21 have their rotation axes orthogonal to the longitudinal direction of the upper beam 12, and the width direction of the hoistway 103 It is supported so that it may be arranged in parallel to. In the configuration example of FIG. 3, the support bracket 21 is configured as a cantilever bracket. The arrangement relationship between the hoisting machine 15 and the car is the same as that of the first embodiment of FIG.

  On the other hand, in the configuration example of FIG. 4, the support brackets 22 and 22 are configured as brackets for both-end support. The other configuration is the same as that of the embodiment of FIG.

  Next, the configuration examples of FIGS. 5 and 6 are common in that the car-side sheaves 4a and 4b are supported on the side surfaces of the upper beam 12 via the support brackets 23 and 23, as in FIGS. However, unlike the configuration example of FIGS. 3 and 4, the sheaves 4 and 4 on the pair of car sides are arranged obliquely with respect to the hoistway width direction with the rotation axis thereof being oblique to the upper beam 12. Yes. In FIG. 5, the support bracket 23 is configured as a cantilever support bracket, but may be configured as a both-end support bracket 24 as shown in FIG.

  According to the third embodiment as described above, unlike the conventional structure in which the sheave support beam is provided on the lower surface of the upper beam, the side of the upper beam 12 is connected to the car side via the support brackets 21, 22, 23, and 24. Since the sheaves 4a and 4b are supported, as in the first and second embodiments, the freedom of various layouts and ropings can be increased by increasing the top clearance, and the car frame height can be reduced. Advantages, such as a reduction in car frame weight, can be obtained.

Fourth embodiment
Next, FIGS. 7 to 9 show a car structure according to a fourth embodiment of the present invention.
The fourth embodiment is common to all the structural examples of FIGS. 7 to 9 in that an upper beam having support portions for the sheaves 4a and 4b on the car side is employed. The arrangement relationship between the hoisting machine 15 and the car is the same as that of the first embodiment of FIG.

  The configuration example of FIG. 7 is an example in which the upper beam 25 employs an irregularly shaped beam. A rectangular hole 26 is formed in the bottom of the portion of the upper beam 25 that protrudes in a step, and car-side sheaves 4a and 4b are disposed in the hole and supported by bearings. In this case, the pair of car-side sheaves 4 a and 4 b are arranged so as to be inclined with respect to the width direction of the hoistway 103.

  Next, the configuration example of FIG. 8 is an example in which a wide beam is adopted as the upper beam 27, and the pair of car-side sheaves 4 a and 4 b are arranged obliquely with respect to the width direction of the hoistway 103. This is the same as the configuration example of FIG.

  On the other hand, the configuration example of FIG. 9 uses the same upper beam 27 as that of FIG. 8 and supports the sheaves 4 a and 4 b on the pair of car sides so as to be arranged parallel to the width direction of the hoistway 103. It is the example which comprised the part.

  According to the third embodiment as described above, the support structures of the car sheaves 4a and 4b can be arranged in various forms, and the top clearance is the same as in the first and second embodiments. It is possible to obtain effects such as an increase in the degree of freedom of various layouts and ropings due to the enlargement of the vehicle, an advantage of being able to lower the car frame height, and a reduction in the weight of the car frame.

  In the case of the configuration example of FIG. 9, instead of arranging the car sheaves 4a and 4b parallel to the width direction of the hoistway 103, the guide rails 13a and 13b of the car and the guide devices 14a and 14b are diagonally opposed. Is arranged. In this case, in relation to the guide rails 16a and 16b for guiding the counterweight, as shown in FIG. 9, the distance between the rails of the guide rails 16a and 16b is increased by bringing one guide rail 16a closer to the landing side. Since it can be taken, the weight loading amount is increased, and it becomes easy to cope with the increase in the car weight by the option correspondence.

Fifth embodiment
Next, FIG. 10 shows a car structure according to a fifth embodiment of the present invention.
In the fifth embodiment, unlike the first to fourth embodiments described so far, the upper beam 30 and the sheave support beam 32 are formed as separate structural members. This is an example in which the sheave support frame 32 that supports the pair of car-side sheaves 4a and 4b on the lower surface of the upper beam 30 is configured by reversing the vertical relationship of the sheave support beam 32. The arrangement relationship between the hoisting machine 15 and the car is the same as that of the first embodiment of FIG.

  As shown in FIG. 10, the sheave support beam 32 is parallel to the width direction of the hoistway 103, whereas the upper beam 30 is arranged to be inclined in the width direction of the hoistway 103, and the guide Rails 14a and 14b are arranged diagonally opposite. As a result, the distance between the rails of the guide rails 16a and 16b can be increased by bringing one of the guide rails 16a closer to the landing side, so that the weight loading amount can be increased and the car weight can be increased due to the option. It becomes easy.

  Even when the sheave and the sheave are arranged in parallel to the width direction of the hoistway 103 as in the configuration examples of FIGS. 3, 4, 5, and 10, the cage fishing core is moved to the landing side. The same effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Car body 3 Car frame 4 Car side sheave 6 Car floor 7 Lower beam 12 Upper beam 13a, 13b Guide rail 15 Winding machine 20 Sheave support beam 21 Support bracket 22 Support bracket 23 Support bracket 24 Support bracket 27 Upper beam

Claims (6)

A car that can be lifted and lowered along a guide rail, a balance weight that can be lifted and lowered along a guide rail for a balance weight, a rope that suspends the ride and the balance weight, and a hoisting machine on which the rope is wound In a traction elevator car having
A car frame that supports the main body of the car, an upper beam that is connected to the car frame so as to extend horizontally and parallel to the hoistway width direction above the main body of the car, and an end of the upper beam A guide means that is slidable with the guide rail, and a plurality of car sheaves that are provided at both ends of the upper beam and on which the rope is wound, and the rotary shaft of the hoisting machine And an angle formed with the depth direction of the car is in a range larger than 0 and smaller than 90 °, and the upper beam also serves as a sheave support portion that supports a pair of car-side sheaves or has an integrated structure, rotation axis of the cage-side sheaves are disposed so as to be oblique to the upper beam, ride an elevator in which the cage-side sheaves at the side or the inner end of the upper beam is characterized in that so as to be supported Basket.   The upper beam has a stepped beam shape, has a support portion for supporting the cage sheave at both ends of the beam, and is arranged obliquely with respect to the hoistway width direction. The elevator car according to Item 1.   2. The elevator car according to claim 1, wherein the support portions that respectively support the car-side sheaves are arranged obliquely and obliquely with respect to the hoistway width direction.   The elevator car according to any one of claims 1 to 3, wherein the hoisting machine is provided on an upper side of a boarding / exiting path on which the car can move up and down.   When the cross section of the hoistway is viewed, the hoisting machine is arranged to overlap either the first space in which the car can be raised or lowered, or the second space in the vertical direction of the first space. The elevator car as claimed in claim 4.   The elevator car according to any one of claims 1 to 5, wherein rotation surfaces of the traction sheave and the car-side sheave of the hoisting machine are arranged in parallel.

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