WO2018096645A1

WO2018096645A1 - Counterweight for elevator device, and elevator device

Info

Publication number: WO2018096645A1
Application number: PCT/JP2016/084923
Authority: WO
Inventors: 健二櫻井; 智貴仮屋; 島田　勝博; 亮平川端
Original assignee: 株式会社日立製作所
Priority date: 2016-11-25
Filing date: 2016-11-25
Publication date: 2018-05-31
Also published as: KR20180079287A; CN108349700A; JP6452888B2; CN108349700B; JPWO2018096645A1

Abstract

Provided are a counterweight for an elevator device and an elevator device with which reactive force on guide devices can be reduced, even if the shape of weights of a counterweight is irregular.　A counterweight 100 for an elevator device comprises: a counterweight frame formed from a pair of standing frames 2a, 2b, a lower plate 2c connecting the lower end parts of the pair of standing frames, and an upper plate 2d connecting the upper end parts of the standing frames; a plurality of weights 3 loaded in the counterweight frame; a pulley 400 mounted to the upper plate; and a plurality of guide devices 5a-5d that are respectively mounted to the upper end parts and lower end parts of the pair of standing frames, are in sliding contact with guide rails, and guide the raising and lowering of the counterweight. The length, in the height direction, of the pair of standing frames is set such that the upper ends of the pair of standing frames are positioned above the upper surface of the upper plate, and the upper ends of the pair of standing frames or, if accessory devices such as oil supply devices 6a, 6b are mounted to the upper part of the pair of standing frames, the upper ends of the accessory devices are positioned within the height restrictions of the counterweight.

Description

Elevator equipment counterweight and elevator equipment

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

The elevator apparatus includes a elevator car and a counterweight that are suspended by a main rope in a hoistway formed in a building. The counterweight generally includes a counterweight frame having a pair of vertical frames arranged on both sides, a lower plate connecting the lower ends of these vertical frames, and an upper plate connecting the upper ends of the vertical frames; A weight mounted on the counterweight frame, a pulley attached to the upper plate and around which the main rope is wound, and a guide device disposed near the four corners of the counterweight frame are provided.
Conventionally, in order to save space in the height direction of an elevator apparatus, a part of a weight arranged above a lower end of a pulley is disclosed (Patent Document 1).

JP 2006-290496 A

By the way, the space saving of the elevator apparatus is realized by arranging the devices or reducing the size of each device itself. However, when realizing space saving, it may be required to make the weight of the counterweight different from the shape of the hoistway device. In this way, if the weight has a different shape, the center of gravity of the counterweight is decentered, so that a relatively large reaction force acts on the guide device, which may prolong the life of the guide device.
However, conventionally, counterweights including those described in Patent Document 1 are configured for the purpose of space saving, and the eccentricity of the center of gravity of the counterweight is not particularly taken into consideration.

An object of the present invention is to provide a counterweight and an elevator apparatus for an elevator apparatus that can reduce the reaction force to the guide apparatus even when the shape of the weight of the counterweight is modified.

The counterweight of the elevator apparatus according to the present invention connects a pair of vertical frames opposed to each other at an interval, a lower plate connecting the lower ends of the pair of vertical frames, and an upper end of the vertical frame. A counterweight frame composed of an upper plate, a plurality of weights loaded on the counterweight frame, a pulley attached to the upper plate and around which a main rope is wound, and opposed surfaces of the pair of vertical frames And a plurality of guide devices attached to the upper and lower ends of each of the pair of vertical frames and slidingly contacting the guide rail to guide the lifting and lowering of the counterweight, When the upper ends of the pair of vertical frames are located above the upper surface of the upper plate, and the attachment device is attached to the upper ends of the pair of vertical frames or the upper portions of the pair of vertical frames, the attachment device The top of the balance is To lie within the forest height limit, characterized in that setting the length in the height direction of the pair of vertical frames.

According to the present invention, it is possible to reduce the reaction force to the guide device even when the weight of the counterweight is an irregular shape.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a front view which shows the counterweight of the elevator apparatus which concerns on one Embodiment of this invention. It is a side view which shows the counterweight of the elevator apparatus which concerns on one Embodiment of this invention. FIG. 2 is a cross-sectional view of a counterweight along line AA in FIG. 1. It is a schematic diagram which shows an example of the elevator apparatus with which the counterweight of one Embodiment of this invention is applied.

Hereinafter, an embodiment of a counterweight and an elevator apparatus for an elevator apparatus according to the present invention will be described with reference to FIGS. 1 to 4. In the drawings, the same or similar components are denoted by the same reference numerals, and repeated description is omitted.

For example, as shown in FIG. 4, the elevator apparatus includes a car 200, a hoisting machine 300, a main rope 500, and a counterweight 100 as main components. Under the car 200, car

lower pulleys

601 and 602 are provided. The hoisting machine 300 is installed at the bottom of the hoistway. A fixed plate 700 is provided near the top of the hoistway, and

ends

901 and 902 of the main rope 500 are connected. Further, turning

pulleys

801 and 802 are attached to the fixed plate 700. A weight upper pulley 400 is attached to the counterweight 100. One end 901 of the main rope 500 is connected to the fixed plate 700, and the sheave of the hoisting machine 300, the turning pulley 801, the car

lower pulleys

601, 602, the turning pulley 802, and the weight upper pulley 400 are wound around in order. The other end 902 is connected to the fixed plate. When the main rope 500 is driven by the hoisting machine 300, the car 200 moves up and down along a car guide rail (not shown), and the counterweight 100 is moved up and down relative to the car 200. Ascend and descend along (not shown). In addition, the structure of an elevator apparatus is not limited to this.

Next, the detailed structure of the counterweight 100 of the elevator apparatus according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a counterweight of the elevator apparatus, FIG. 2 is a side view of the counterweight of the elevator apparatus, and FIG. 3 is a sectional view of the counterweight along the line AA in FIG.

The counterweight 1 includes a counterweight frame 2, a weight 3, a pulley on the weight 400,

guide devices

5a, 5b, 5c, and 5d, and

oil supply devices

6a and 6b.

The counterweight frame 2 has a pair of

vertical frames

2a and 2b (disposed on both the left and right sides in FIG. 1) opposed to each other with a space therebetween, and a lower plate 2c that connects the lower ends of the

vertical frames

2a and 2b. And it is comprised from the upper side board 2d which connects the upper end part of the

vertical frames

2a and 2b.

As shown in FIG. 3, each of the

vertical frames

2a and 2b has a U-shaped cross-sectional shape, is arranged so that the opening sides face each other, and the opposite opening side faces the

guide rails

7a and 7b, respectively. It has become.

The lower plate 2c is fixed to the lower part of the

vertical frames

2a and 2b with bolts at both ends so as to receive the load of a plurality of weights 3 loaded thereon. Further, when the weight 3 arranged at the uppermost position is pressed downward by the weight presses 10a and 10b, the weight 3 as a whole is pressed against the lower side plate 2c, so that there is no backlash. Moreover, the receiving part 12 received by the buffering device (illustration omitted) installed in the bottom part of the hoistway is attached to the lower part of the lower side board 2c.

Both ends of the upper plate 2d are fixed to the upper portions of the

vertical frames

2a and 2b by bolts, and a weight upper pulley 400 is rotatably attached to the upper surface via a bracket 8.

A main rope (not shown) is wound around the weight upper pulley 400, and the counterweight 100 is suspended by the main rope via the weight upper pulley 400. In the present embodiment, the weight upper pulley 400 is placed on the upper plate 2d. That is, the lower end of the weight upper pulley 400 is located above the upper surface of the weight 3 disposed at the uppermost position. Since the weight upper pulley 400 is placed on the upper plate 2d, the maintenance of the weight upper pulley 400 is facilitated.

Guide devices

5 a, 5 b, 5 c and 5 d are arranged near the four corners of the counterweight frame 2. That is, the guide device 5a is the upper end of the vertical frame 2a, the guide device 5b is the lower end of the vertical frame 2a, the guide device 5c is the upper end of the vertical frame 2b, and the guide device 5d is the lower end of the vertical frame 2b. The

guide devices

5a and 5b are attached to the guide rail 7a, and the

guide devices

5c and 5d are in sliding contact with the guide rail 7b, respectively, to guide the lifting and lowering of the counterweight 1.

The

oil supply devices

6a and 6b are attached to the upper portions of the

vertical frames

2a and 2b, that is, at positions close to the

guide devices

5a and 5c. In this embodiment, the

oil supply devices

6a and 6b are attached to inverted L-

shaped attachment members

11a and 11b attached to the upper portions of the

vertical frames

2a and 2b, respectively. Each of the

oil supply devices

6a and 6b has a tank for storing the lubricating oil, and has a structure for slowly supplying the lubricating oil from these tanks. The

oil supply devices

6a and 6b apply lubricant to the

guide rails

7a and 7b, respectively, and supply the lubricant between the

guide devices

5a, 5b, 5c, and 5d and the

guide rails

7a and 7b.

In the present embodiment, the weights 3 stacked on the lower plate 2c have different shapes as shown in FIG. That is, the weight shape seen from the upper surface (horizontal plane) is atypical. Here, the irregular shape of the weight means an asymmetric shape in the present embodiment. In other words, when the weight shape is different, it can be said that the center of gravity position of the weight viewed from the top surface is shifted from the center of gravity position of the region formed by the

vertical frames

2a and 2b when viewed from the top surface.

In this embodiment, the weight 3 is fitted to the

vertical frames

2a and 2b having U-shaped cross-sections at both ends in order to reduce the vertical frame of the counterweight frame and to efficiently use the space. The width is narrow so that they can be combined, and the central portion is wider than the width of the vertical frame. In order to save space in the elevator apparatus, it is required to make this weight different. For example, if the space of the elevator apparatus is to be saved, the

guide rails

7a and 7b have to be installed close to the wall side (upper side in FIG. 3). For this reason, the weight 3 has to be arranged so that both ends are deviated from the central portion. Therefore, the weight 3 is formed so that the wide central portion is located closer to the car side (the lower side in FIG. 3), and the central portion is asymmetrical (on the drawing in FIG. 3). , The shape is asymmetric). In other words, the center line of the weight 3 (the two-dot chain line in FIG. 3; the center of gravity is located on the line) is the center line of the area formed by the

vertical frames

2a and 2b (the one-dot chain line in FIG. 3; the

guide rail

7a, 7b coincides with the line connecting 7b and the center of gravity is located on the line.

Further, as shown in FIG. 3, the weight of the hoistway device 9 as viewed from the top surface in relation to the arrangement of the hoistway device 9 (relationship with the position of the rope end, relation with the position of the speed governor when placed on the speed governor). There is a case where the weight 3 is formed by cutting out a part of 3. Also in this case, the weight 3 has an asymmetrical shape (asymmetrical shape in the drawing of FIG. 3) when viewed from the length direction. As shown in FIG. 3, when the weight 3 is formed asymmetrically in the vertical and horizontal directions, the influence of the eccentricity of the center of gravity of the counterweight increases, and a large reaction force may act on the guide device.

The elevator apparatus according to the present embodiment uses an unusual weight 3 and is devised to reduce the reaction force to the guide apparatuses 5a to 5d. Specifically, the

vertical frames

2a and 2b are extended by an extension dimension H1 within the limit of the counterweight, and the distance between the

guide devices

5a and 5c on the upper end side and the

guide devices

5b and 5d on the lower end side is extended. H2 is set large. Within the counterweight height limit is within the overhead dimensions of the counterweight 100 that is predetermined as the specifications of the elevator apparatus.

Hereinafter, the significance of extending the vertical dimension H1 within the limits of the counterweight height will be described.

Since the counterweight frame 2 is transported as an assembly from the factory to the place where the elevator apparatus is installed, the vertical frame 2a is originally provided so that the upper ends of the

vertical frames

2a and 2b do not protrude from the upper surface of the upper plate 2d. , 2b is preferably substantially the same as the height of the upper surface of the upper plate 2d. In the present embodiment, the

guide devices

5a and 5c on the upper end side and the

guide devices

5b and 5d on the lower end side from the new point of view that the reaction force to the guide devices 5a to 5d caused by the irregular weight 3 is reduced. The

vertical frames

2a and 2b are intentionally extended upward in order to set a large distance dimension H2.

In this embodiment, the upper pulley 400 is installed on the upper surface of the upper plate 2d. In such an elevator apparatus, the overhead dimension H0 of the counterweight 100, which is predetermined as the specifications of the elevator apparatus, is the height dimension from the lower end of the

vertical frames

2a, 2b to the upper end of the bracket 8 that fixes the weight upper pulley 400. Become. As long as the position of the upper end of the vertical frame (the upper end of the auxiliary device when an auxiliary device such as a fueling device is attached to the upper part of the vertical frame) is within the range of the overhead dimension H0, the

vertical frames

2a and 2b It is allowed to extend upward beyond the upper surface of the upper plate 2d. In this embodiment, since the

oil supply devices

6a and 6b are attached to the upper portions of the

vertical frames

2a and 2b, the height dimension from the lower end of the

vertical frames

2a and 2b to the upper end of the

oil supply devices

6a and 6b is the overhead dimension. The

vertical frames

2a and 2b are extended upward beyond the upper surface of the upper plate 2d within a range not exceeding. In other words, in this embodiment, the

vertical frames

2a and 2b are extended by effectively using the existing space in the vertical direction.

The reaction force received by the guide device varies depending on the degree of eccentricity of the center of gravity of the weight 3. If the degree of eccentricity of the center of gravity is large, it is desirable to extend the

vertical frames

2a and 2b as much as possible. That is, as shown in FIG. 1, the upper ends of the

oil supply devices

6a and 6b attached to the upper portions of the

vertical frames

2a and 2b are substantially at the same level as the upper end of the bracket 8 that fixes the weight upper pulley 400 (the counterweight height limit). The

vertical frames

2a and 2b are extended upward by an extension dimension H1 so that the upper ends of the

oil supply devices

6a and 6b are within the upper limit of the counterweight, that is, within the overhead dimension. Here, in the present embodiment, the vicinity of the counterweight height limit is a case where the upper end of the

oil supply devices

6a, 6b is at the same level as the upper end of the bracket 8 and is extended by at least 90%. means. Further, in order to sufficiently obtain the effect of reducing the reaction force received by the guide device, the

vertical frames

2a and 2b are extended by 100% when the upper ends of the

oil supply devices

6a and 6b are at the same level as the upper end of the bracket 8. In this case, it is desirable to extend it by about 50%.

In this embodiment, the shape of the weight 3 of the counterweight 100 is atypical because of the arrangement of the hoistway device 9 and the like. When the counterweight 100 loaded with the weight 3 is actually moved up and down, the center of gravity of the counterweight 100 is decentered. Therefore, it is compared with the guide devices 5a to 5c arranged near the four corners of the counterweight 100. Large reaction force acts. However, the

vertical frames

2a and 2b of the present embodiment are extended upward from the upper plate 2d by the extension dimension H1, and the

guide devices

5a and 5c on the upper end side and the

guide devices

5b and 5d on the lower end side are extended. Is set large. Accordingly, the reaction force acting on the guide devices 5a to 5c can be reduced, and thereby the life of the guide devices 5a to 5d can be extended.

In this embodiment, the

vertical frames

2a and 2b are extended within the counterweight height limit, but the

vertical frames

2a and 2b are extended by effectively using the existing space in the vertical direction. It is not necessary to change the overall height of the counterweight 100. Thus, the reaction force to the guide devices 5a to 5d can be reduced without affecting other devices and installation conditions.

In addition, this invention is not limited to the above-mentioned Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Moreover, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

2 ... counterweight frame, 2a, 2b ... vertical frame, 2c ... lower plate, 2d ... upper plate, 3 ... weight, 5a-5d ... guide device, 6a, 6b ... Refueling device, 7a, 7b ... Guide rail (balanced weight guide rail), 8 ... Bracket, 9 ... Hoistway equipment, 10a, 10b ... Weight presser, 11a, 11b ... Mounting member, 12 ... receiving part, 100 ... counterweight, 200 ... riding car, 300 ... hoisting machine, 400 ... pulley on weight, 500 ... main rope.

Claims

In an elevator apparatus comprising a car, a counterweight, a hoisting machine, and a main rope, and driving the main rope by the hoisting machine to relatively raise and lower the car and the counterweight.
The counterweight is
A counterweight frame comprising a pair of vertical frames opposed to each other at intervals, a lower plate connecting the lower ends of the pair of vertical frames, and an upper plate connecting the upper ends of the vertical frames; ,
A plurality of weights loaded on the counterweight frame;
A pulley attached to the upper plate, around which the main rope is wound;
The pair of vertical frames are opposite to the opposing surfaces and are attached to the upper and lower ends of each of the pair of vertical frames, and are brought into sliding contact with guide rails to raise and lower the counterweights. A plurality of guide devices for guiding,
In the pair of vertical frames, the upper ends of the pair of vertical frames are positioned above the upper surface of the upper plate, and an attachment device is provided at the upper ends of the pair of vertical frames or the upper portions of the pair of vertical frames. An elevator apparatus having a length in a height direction so that an upper end of the auxiliary apparatus is located within a counterweight height limit when attached.
The elevator apparatus according to claim 1,
The pulley is attached to the upper surface of the upper plate via a bracket,
The accessory device is an oil supply device that supplies lubricating oil to sliding surfaces of the guide device and the guide rail,
The pair of vertical frames has a length from the upper surface of the upper plate to the upper ends of the pair of vertical frames so that the upper end of the fueling device is at the same level as the upper end of the bracket. An elevator apparatus having a length in a height direction so as to have at least 50% of a length from an upper surface of a side plate to an upper end of the pair of vertical frames.
The elevator apparatus according to claim 2,
The pair of vertical frames has a length from the upper surface of the upper plate to the upper ends of the pair of vertical frames so that the upper end of the fueling device is at the same level as the upper end of the bracket. An elevator apparatus having a length in a height direction so as to have at least 90% of a length from an upper surface of a side plate to an upper end of the pair of vertical frames.
In the elevator apparatus as described in any one of Claim 1 to 3,
The elevator apparatus is characterized in that a shape of the weight as viewed from above is formed asymmetrically when viewed from the width direction or the length direction.
The elevator apparatus according to claim 4,
The pair of vertical frames have a U-shaped cross-sectional shape, are arranged such that the opening sides face each other and the opposite opening sides face the guide rails,
The weight, as viewed from above, has narrow ends that fit into the U-shaped portion of the vertical frame, and a central portion that is wider than the U-shaped portion of the vertical frame. The elevator apparatus is characterized in that the center line in the width direction of the center portion is deviated from the center line in the width direction of the both end portions.
The elevator apparatus according to claim 4,
The pair of vertical frames have a U-shaped cross-sectional shape, are arranged such that the opening sides face each other and the opposite opening sides face the guide rails,
The weight, as viewed from above, has narrow ends that fit into the U-shaped portion of the vertical frame, and a central portion that is wider than the U-shaped portion of the vertical frame. And a part of the central part is formed to have a notch corresponding to the arrangement of the hoistway equipment of the elevator apparatus.
It is a counterweight of the elevator device,
A pair of vertical frames that have U-shaped cross-sections, with the opening sides facing each other and the opposite opening sides facing the guide rails of the counterweight, and the lower ends of the pair of vertical frames are connected A counterweight frame composed of a lower side plate and an upper side plate connecting the upper end of the vertical frame;
A weight loaded on the lower plate of the counterweight frame, wherein the shape viewed from the top is formed asymmetrically when viewed from the width direction or the length direction;
A pulley attached to the upper surface of the upper plate via a bracket, on which a main rope is wound;
The pair of vertical frames are mounted on the opposite ends of the pair of vertical frames and on the upper and lower ends of the vertical frames, and are slidably contacted with the guide rails to guide the lifting and lowering of the counterweights. A plurality of guide devices,
In the pair of vertical frames, the upper ends of the pair of vertical frames are positioned above the upper surface of the upper plate, and an attachment device is provided at the upper ends of the pair of vertical frames or the upper portions of the pair of vertical frames. A counterweight of an elevator apparatus having a length in a height direction so that an upper end of the auxiliary device is located within a counterweight height limit when attached.