WO2011135648A1

WO2011135648A1 - Balance weight device for elevator and elevator

Info

Publication number: WO2011135648A1
Application number: PCT/JP2010/057360
Authority: WO
Inventors: 大樹森倉; 幸臣水野
Original assignee: 三菱電機株式会社
Priority date: 2010-04-26
Filing date: 2010-04-26
Publication date: 2011-11-03

Abstract

Disclosed is a balance weight device for an elevator, which is capable of lowering a hoist way. Specifically disclosed is a balance weight device (7) which is provided with a balance weight (19) that is provided within a hoist way (3) of an elevator (1) so as to move up and down, and a pair of suspension sheaves (21) for a weight. The pair of suspension sheaves (21) for the weight is provided on the undersurface of the balance weight (19). The pair of suspension sheaves (21) for the weight is disposed in such a manner that the guiding direction thereof is inclined to the widthwise direction of the balance weight (19).

Description

Elevator counterweight device and elevator

The present invention relates to an elevator counterweight device and an elevator.

The elevator has a hoistway that extends vertically. In the hoistway, a car and a counterweight are provided so as to be able to move up and down. The car and the counterweight are connected by a rope. When the rope is driven by the hoisting machine, the car and the counterweight are raised and lowered in opposite directions.

The counterweight is usually arranged between a pair of counterweight guide rails erected in the hoistway, and moves while being guided by the guide rails when moving up and down. Further, the counterweight has been hung near the center of the upper surface of the weight (see, for example, Patent Documents 1 to 3).

By the way, when the counterweight is lifted near the center of the upper surface as described above, a so-called return wheel, rope rope stopper, hoisting machine, or the like is arranged just above the rising path of the counterweight. There was a need to do. In such an arrangement, it is necessary to secure a margin for preventing collision so that the counterweight does not collide with a return wheel or the like when the counterweight rises most, including in an emergency. Furthermore, even when the counterweight is at its highest level during normal operation, it is necessary to secure a sufficient distance between the return wheel and the counterweight suspension car so that the rope is not overwhelmed. Under such circumstances, there is a problem that it is difficult to reduce the height of the hoistway in the configuration in which the return wheel or the like is arranged directly above the rising path of the counterweight.

Japanese Patent Application Laid-Open No. 09-227053 Japanese Patent Laid-Open No. 10-212083 JP 2005-206361 A

The present invention has been made in view of the above, and an object thereof is to provide an elevator counterweight device and the like that can lower a hoistway.

In order to achieve the above-described object, the present invention provides a counterweight device provided with a counterweight provided so as to be capable of being raised and lowered in a hoistway of an elevator, provided on the lower surface of the counterweight, and a guide direction of the counterweight. A pair of weight suspension vehicles are provided so as to be inclined with respect to the width direction.
Furthermore, an elevator according to the present invention for achieving the same object is one in which a weight return wheel or a hoisting machine is arranged on the upper part of a weight guide rail, and the above-described counterweight device according to the present invention is provided. It has.

According to the present invention, the margin dimension to be secured above the counterweight device can be greatly reduced, and the hoistway in the elevator can be kept low.

It is a figure which shows typically the connection relation with a cage and a counterweight regarding embodiment of this invention. It is a figure which shows the said guide rail upper part vicinity from the side when the counterweight apparatus raises to the guide rail upper part for a weight. It is a figure which shows the structure in a hoistway planarly. It is a perspective view regarding the upper part vicinity of the guide rail for weights. It is a schematic diagram which shows the relationship between the guide direction of the suspension vehicle for weights, and a counterweight. It is a perspective view regarding the suspension vehicle support body which supports a pair of suspension vehicle for weights. It is a figure which shows the structure in a hoistway from the side regarding the structure as a comparative example. It is a figure which shows the structure in a hoistway planarly regarding the structure as a comparative example. It is a figure of the same aspect as FIG. 1 regarding the different form of this invention.

Hereinafter, an embodiment of an elevator counterweight device according to the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

FIG. 1 is a diagram schematically showing a connection relationship with a car and a counterweight with respect to the present embodiment. The elevator 1 includes a hoistway 3, a car device 5 and a counterweight device 7 that can be raised and lowered in the hoistway, a main rope 9 that is a flexible body such as a rope, and a hoisting machine 11. Yes.

In the hoistway 3, a pair of car guide rails in a well-known manner (not shown) are erected, and the car device 5 is provided so as to go up and down while being guided by the car guide rails. Similarly, a pair of weight guide rails 13 (see FIG. 2 described later) is erected in the hoistway 3, and the counterweight device 7 is guided by the pair of weight guide rails 13 and moves up and down. It is provided as follows.

The car device 5 includes a car 15 and a pair of car suspension wheels 17. Further, the counterweight device 7 includes a counterweight 19 and a pair of weight suspension wheels 21.

The main rope 9 is wound around the hoisting machine 11. A portion of the main rope 9 extending from one end side of the hoisting machine 11 is wound around a car return wheel 23, and is further wound around a pair of car suspension wheels 17, so that a car side main rope clasp 25 (described later). In FIG. 3). On the other hand, a portion of the main rope 9 extending from the other end side of the hoisting machine 11 is wound around a weight return wheel 27 and further wound around a pair of weight suspension wheels 21, and the weight side main rope clasp 29. It is fixed with. Note that FIG. 1 gives priority to clearly showing the routing route of the main rope, and the illustrated position is changed so that each part overlaps and is not illustrated, and the actual positional relationship is not shown as it is. Absent.

Further, details of each part will be described based on FIG. 2 and FIG. FIG. 2 is a side view of the vicinity of the upper part of the guide rail when the counterweight device is raised to the upper part of the guide rail for weight. FIG. 3 is a plan view showing a configuration in the hoistway.

The counterweight device 7 is provided so as to be sandwiched between a pair of weight guide rails 13. The counterweight 19 in the counterweight device 7 includes a weight portion 31, a weight upper frame 33 and a weight lower frame 35 provided above and below the weight portion 31.

Weight guide shoes

37a and 37b are provided on upper and lower ends of both side surfaces of the counterweight 19 in the width direction, that is, both side surfaces of the weight upper frame 33 and both side surfaces of the weight lower frame 35. The upper surface of the weight guide shoe 37a provided on both side surfaces of the weight upper frame 33 (the upper ends of both side surfaces of the counterweight 19) is aligned with the upper surface 19a of the weight upper frame 33 (counterweight 19) or It is located below the upper surface 19a. In other words, the upper surface of the weight guide shoe 37 a is provided so as not to protrude from the upper surface 19 a of the weight upper frame 33. Similarly, the lower surface of the weight guide shoe 37b provided on both side surfaces of the weight lower frame 35 (the lower ends of both side surfaces of the counterweight 19) is flush with the lower surface 19b of the weight lower frame 35 (counterweight 19). They are arranged or positioned above the lower surface 19b. In other words, the lower surface of the weight guide shoe 37 b is provided so as not to protrude from the lower surface 19 b of the weight lower frame 35. The width direction of the counterweight 19 refers to the direction in which the pair of weight guide rails 13 are arranged (the left and right direction in FIGS. 2 and 3).

FIG. 4 is a perspective view of the vicinity of the upper portion of the weight guide rail. As shown in FIGS. 2 and 4, the weight return wheel 27 described above is rotatably fixed to the upper portion of the weight guide rail 13 on one side (the right side in FIGS. 2 to 4). The weight return wheel 27 is disposed not between the pair of weight guide rails 13 but outside the one weight guide rail 13 (the side away from the other weight guide rail).

A weight side main clasp 29 is provided on the upper part of the other weight guide rail 13. An end portion of the main rope 9 wound around the weight suspension wheel 21 is fixed at a weight side main rope clamp 29.

FIG. 5 is a schematic diagram showing the relationship between the guide direction of the suspension truck for weight and the counterweight. As shown in FIGS. 3 and 5, the guide direction G of the main rope 9 in the pair of weight suspension wheels 21 is configured to be inclined with respect to the width direction W of the counterweight 19. Further, in the present embodiment, as shown in FIGS. 3 and 5, each guide groove outer end 21 a of the weight suspension wheel 21 is positioned outside the counterweight 19 in plan view. In addition, the guide groove outer side refers to end portions in a direction away from each other in the pair of weight suspension wheels.

Further, a support mode of the weight suspension wheel 21 will be described with reference to FIGS. FIG. 6 is a perspective view of a suspension vehicle support that supports a pair of weight suspension vehicles. The pair of weight suspension vehicles 21 are supported on the lower surface of the counterweight device 7 in a freely rotatable manner by a suspension vehicle support 39. The suspension vehicle support body 39 supports the first support body 41 in such a manner that the distance between the pair of first support bodies 41 and the pair of first support bodies 41 can be changed. And a second support 43 to be used.

1st support body 41 and 2nd support body 43 are comprised with the square pipe of the cross-sectional similar shape from which a magnitude | size mutually differs. A weight suspension wheel 21 is rotatably attached to one end portion of each first support body 41 via a suspension wheel stopper 45. The suspended vehicle stopper 45 is fixed to the first support body 41 by bolts 47. The other end portion of each first support body 41 is slidably inserted inside a corresponding end portion of the second support body 43. In addition, this invention is not limited to this, The thickness relationship of the 1st support body 41 and the 2nd support body 43 is reversed, and the edge part of the 2nd support body 43 is the other end part of the 1st support body 41. The aspect inserted inside may be sufficient.

One of the first support body 41 and the second support body 43 (the second support body 43 in the present embodiment) is provided with a long slot 49 for sliding. Correspondingly, the other one of the first support body 41 and the second support body 43 (the first support body 41 in the present embodiment) is fixed with a slide stop fastening means 51 penetrating the slide long hole 49. Yes. To describe a specific example, the slide long hole 49 is a through hole formed in the second support body 43, and the slide stop fastening means 51 is a bolt that is screwed into the first support body 41.

With such a configuration, the distance between the pair of weight suspension trucks 21 and the position of the individual weight suspension trucks 21 can be changed. Further, by using the slide long hole 49 and the slide stop fastening means 51, the distance and the individual positions of the pair of weight suspension wheels 21 are firmly maintained when the elevator is in operation while having a configuration in which the distance and the individual position can be changed. And can be fixed.

Furthermore, the attachment mode of the suspension vehicle support 39 will be described. Either one of the suspension vehicle support 39 and the counterweight 19 is provided with an arc-shaped elongated hole extending in an arc shape, and the other side is fixed with a rotation stop fastening means penetrating the arc-shaped elongated hole. . Note that “one side” means one of the suspension vehicle support 39 and the counterweight 19 itself, or a member / part that is attached or formed integrally with the one. The same applies to the “other side”, and the other of the suspension vehicle support body 39 and the counterweight 19 itself, or a member attached or formed integrally with the other side.

Specifically, the suspension vehicle support 39 and the weight lower frame 35 of the counterweight 19 are provided with mounting

plates

53a and 53b, respectively. The mounting

plates

53a and 53b are aligned with each other so that they are generally in surface contact. An arcuate slot 55 is provided in the attachment plate 53a on the suspension vehicle support 39 side. Corresponding to this, a rotation stop fastening means 57 penetrating the arc-shaped elongated hole 55 is fixed to the mounting plate 53b on the counterweight 19 side.

With this configuration, the guide direction G of the pair of weight suspension vehicles 21 can be changed. Furthermore, by using the arc-shaped elongated hole 55 and the rotation stop fastening means 57, it is possible to change the guide direction G, and at the time of the elevator operation, the guide direction of the pair of weight suspension wheels 21 is not moved. Can be fixed.

According to the present embodiment as described above, there are the following excellent advantages. First, as a configuration to be compared with the present embodiment, a configuration as shown in FIGS. 7 and 8 is given. 7 and 8, only one weight suspension wheel 121 is provided at the upper portion of the counterweight 119, and the guide direction of the weight suspension wheel 121 is substantially aligned with the width direction of the counterweight 119. Accordingly, the weight return wheel 127 must be disposed directly above the rising path of the counterweight 119, and further, since it is necessary to support the weight return wheel 127 thus arranged, a pair of A mounting beam 161 that bridges between the weight guide rails 13 is disposed directly above the rising path of the counterweight 119. In such a comparative example, it is necessary to ensure a margin for preventing collision so that the counterweight 127 does not collide with the weight returning wheel 127 when the counterweight 119 rises most.

In contrast to the comparative example, in the counterweight device 7 of the present embodiment, a pair of weight suspension vehicles 21 are provided instead of a single one, and the guide direction G of the weight suspension vehicles 17 is viewed in plan view. The counterweight 19 is inclined with respect to the width direction W. For this reason, each guide groove outer end 21a of the weight suspension wheel 21 can be positioned outside the counterweight 19 without interfering with the weight guide rail 13 in a plan view. Thus, the weight return wheel 27 can be escaped from between the pair of weight guide rails 13, that is, the weight return wheel 27 can be arranged outside the counterweight 19 in plan view. Became. Accordingly, since the weight return wheel 27 does not have to be arranged directly above the rising path of the counterweight 19, there is no risk of collision with the weight return wheel when the counterweight 19 is raised to the maximum. It is not necessary to secure such a large margin. As a result, the weight guide rails 13 need only have a length that allows the weight guide shoes 37a to move safely when the counterweight rises, and the weight guide rails 13 can be increased to a large margin. It is no longer necessary to be extended. For this reason, it is possible to greatly reduce the margin dimension to be secured above the counterweight device 7 at the highest position, and finally, it is possible to keep the hoistway in the machine room-less elevator low. It was. Further, as described above, if the upper and lower

weight guide shoes

37a and 37b are configured not to protrude from the corresponding upper surface 19a and lower surface 19b of the counterweight 19, it is possible to further reduce the margin dimension. it can.

Further, since it is not necessary to support the weight return wheel 27 at the center of the pair of weight guide rails 13, there is no need for a mounting beam as in the above comparative example, and accordingly, above the counterweight 19. There is also an advantage that it is no longer necessary to earn unnecessary margins.

Further, as shown mainly in FIG. 2, the weight side main clasp 29, the weight return wheel 27, and its mounting bracket are connected to the back surface of the pair of weight guide rails 13 (the sides on which the guide rails are separated from each other). If it is provided on the surface of the counterweight, it is possible to avoid interference with the weight side main clasp 29, the mounting bracket and the like and the counterweight 19 and the upper frame 33 of the counterweight. The effect that the margin dimension to be performed can be reduced is obtained.

Further, in the above-described comparative example of FIG. 7 and FIG. 8, even if the allowance dimension for preventing collision can be reduced, the weight suspension wheel 121 when the counterweight 119 rises due to this, There may be a problem that it is difficult to ensure a sufficient distance from the weight return wheel 127. On the other hand, in the present embodiment, the weight suspension wheel 21 is provided not at the upper part of the counterweight 19 but at the lower part. Therefore, even if the margin dimension above the counterweight is reduced, the distance between the weight suspension wheel 21 and the weight return wheel 27 is still sufficiently secured. Therefore, although the space above the counterweight can be reduced and the hoistway can be configured low, the main rope 9 is not subjected to excessive force when the counterweight 19 is raised, and the main rope 9 As a result, it is possible to suppress an excessive increase in the fleet angle.

Moreover, in the comparative example of FIG.7 and FIG.8 mentioned above, the main rope 9 extended upwards from the suspension vehicle 121 for weights exists in the inner side of a pair of weight guide rail 13, Therefore For this reason, the main rope 9 is the surrounding site | part. In order to avoid interference, it was necessary to consider to design the hoistway wider. On the other hand, in the present embodiment, each guide groove outer end 21a of the weight suspension wheel 21 is located outside the counterweight 19 in a plan view and extends upward from the weight suspension wheel 21. The cable 9 passes outside the pair of weight guide rails 13 (not between the pair of weight guide rails). Therefore, the main rope 9 is less likely to interfere with the weight guide rails 13, the rail brackets supporting them, the

weight guide shoes

37a and 37b, or other devices. Therefore, the hoistway space (especially the space in the interval direction between the pair of weight guide rails) can be reduced by the counterweight device of the present embodiment, and according to another viewpoint, the hoistway is narrow and the guide rail for weights. The occurrence of interference can be suppressed even when the gap between the device and other devices is small. Further, in this embodiment, the guide direction G of the pair of weight suspension vehicles 21, the distance between the pair of weight suspension vehicles 21, and the position of the individual weight suspension vehicles 21 can be changed in this embodiment. Therefore, in order to avoid interference, the layout can be set quite freely according to the circumstances, conditions, configuration, and design conditions of each site, making it easier to cope with the downsizing of the hoistway. ing.

Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

For example, the configuration assumed by the present invention is a configuration in which a means for supporting the main rope is arranged at the upper part of the weight guide rail (above the counterweight), and the present invention is arranged at the upper part of the weight guide rail. It is not limited to the structure provided with the weight return wheel. Therefore, as another example of the present invention, as shown in FIG. 9, a configuration in which the hoisting machine 11 as a means for supporting the main rope is disposed above the counterweight 19 can be mentioned.

DESCRIPTION OF SYMBOLS 1 Elevator, 3 hoistway, 7 Counterweight apparatus, 11 Hoisting machine, 19 Counterweight, 21 Weight suspension car, 27 Weight return car, 37a, 37b Weight guide shoe, 39 Suspension car support body, 41 1st support body , 43 2nd support, 49 slide long hole, 51 slide stop fastening means, 53a, 53b mounting plate, 55 arc shaped long hole, 57 rotation stop fastening means.

Claims

In the counterweight device provided with the counterweight provided so that it can be raised and lowered in the elevator hoistway,
An elevator counterweight device, comprising: a pair of weight suspension wheels provided on a lower surface of the counterweight and arranged such that a guide direction is inclined with respect to a width direction of the counterweight.
The elevator counterweight device according to claim 1, wherein, in a plan view, each guide groove outer end of the weight suspension wheel is located outside the counterweight.
The elevator weight balance device according to claim 1 or 2, wherein the weight suspension wheel is provided so that a guide direction can be changed in plan view.
The pair of weight suspension vehicles are attached to the counterweight by a suspension vehicle support,
An arc-shaped elongated hole extending in an arc shape is provided on one side of the suspension vehicle support body and the counterweight, and an anti-rotation fastening means penetrating the arc-shaped elongated hole is fixed on the other side. 3 elevator counterweight device.
The elevator counterweight device according to any one of claims 1 to 4, wherein the pair of weight suspension vehicles is provided so that a distance between the pair of weight suspension vehicles can be changed.
The pair of weight suspension vehicles are attached to the counterweight by a suspension vehicle support,
The suspension vehicle support body includes a pair of first support bodies that rotatably support the pair of weight suspension cars, and a second support that supports the first support body so that a distance between the pair of first support bodies can be changed. Including the body,
The first support and the second support are composed of pipes having different sizes,
The other is slidably inserted inside the one of the first support and the second support,
One of the first support and the second support is provided with a slot for sliding,
6. The elevator counterweight device according to claim 5, wherein a sliding stop fastening means that penetrates the sliding long hole is fixed to the other of the first support and the second support.
On the upper and lower ends of both side surfaces of the counterweight in the width direction, weight guide shoes are provided,
The upper surface of the weight guide shoe provided at the upper end of the both side surfaces is aligned with the upper surface of the counterweight or positioned below the upper surface,
The elevator according to any one of claims 1 to 6, wherein a lower surface of the weight guide shoe provided at a lower end portion of the both side surfaces is aligned with or positioned above the lower surface of the counterweight. Counterweight device.
In the elevator in which the counterweight device moves up and down along the weight guide rails standing in the hoistway,
A weight return wheel or a hoisting machine is disposed on the upper part of the weight guide rail,
The elevator according to claim 1, wherein the counterweight device is the counterweight device according to claim 1.