JP2020169085A - Counter weights and elevator equipment equipped with them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of increasing the weight of a counter weight while suppressing the influence of an installation space while ensuring the strength of a frame body. SOLUTION: A hoisting machine 20, a traction rope 30 wound around the hoisting machine 20, a car 40 provided on one of the traction ropes 30 and moving in a hoistway 10, and provided on the other side of the traction rope. It is equipped with a counter weight 60 that moves in the hoistway 10. The counter weight 60 includes a frame body 61 and a main weight 62 laminated in the frame body 61, and an additional weight 65 is fixed to the main weight 62. [Selection diagram] Fig. 2

Description

The present invention relates to a counter weight and an elevator device including the counter weight.

In general, many elevator devices are widely used as a traction system (sliding system). In this traction system, the car and the counter weight are suspended by a traction rope, and the car and the counter weight are moved up and down in the opposite direction by winding the traction rope with a hoisting machine. By the way, when the weight of the car increases due to the structure of adding specifications to the existing elevator, it is necessary to increase the weight of the counter weight as well.

Then, as a conventional technique for increasing the weight of the counter weight, for example, the technique described in Patent Document 1 has been proposed.

In Patent Document 1, a main weight and an adjustment weight are arranged in a frame body constituting a counter weight, and the adjustment weight attached to the upper part of the frame body is divided into two in a direction connecting a pair of left and right vertical beams. It is disclosed that it was done. Further, Patent Document 1 discloses that the adjusting weight is fixed to the lower surface of the lower beam constituting the frame body or the side wall of the vertical beam constituting the frame body by using screw rods and bolts.

JP-A-2007-55773

However, in the technique described in Patent Document 1 described above, an adjustment weight, that is, an additional weight is arranged above the main weight that is installed in advance. That is, it is premised that there is a space for an additional weight above the existing weight, and there is a problem that it is difficult to increase the weight of the counter weight if this space cannot be secured.

In addition, since the adjustment weight is fixed to the lower beam or vertical beam that constitutes the frame using screw rods and bolts, it is necessary to make holes in the lower beam and vertical beam for passing the screw rods and bolts. There was a problem that the strength of the frame was reduced.

An object of the present invention is to provide a counter weight capable of increasing the weight while suppressing the influence of the installation space while ensuring the strength of the frame, and an elevator device provided with the counter weight.

In order to achieve the above object, the present invention is characterized in that an additional weight is fixed to the main weight in a counter weight including a frame body and a main weight laminated in the frame body.

Further, the present invention is provided on a hoisting machine, a traction rope wound around the hoisting machine, a riding car provided on one of the traction ropes and moving in a hoistway, and on the other side of the traction rope. In an elevator device including a counter weight that moves in the hoistway, the counter weight includes a frame body and a main weight laminated in the frame body, and an additional weight is fixed to the main weight. And.

According to the present invention, it is possible to provide a counter weight capable of increasing the weight while suppressing the influence of the installation space while ensuring the strength of the frame body, and an elevator device provided with the counter weight.

Issues, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is the schematic of the elevator apparatus which concerns on embodiment of this invention. It is a front view which shows the counter weight of the elevator apparatus which concerns on embodiment of this invention. It is a side view of the counter weight which concerns on embodiment of this invention. It is a top view of the counter weight which concerns on embodiment of this invention. It is a perspective view which shows the main part of the additional weight which concerns on embodiment of this invention. It is sectional drawing of the connecting part of the additional weight which concerns on embodiment of this invention.

Hereinafter, embodiments for carrying out the elevator device of the present invention will be described with reference to FIGS. 1 to 6. In each figure, the same or similar configurations are designated by the same reference numerals, and repeated description will be omitted.

FIG. 1 is a schematic view of an elevator device according to an embodiment of the present invention. In FIG. 1, the elevator device is installed in the hoistway 10. One end of the traction rope 30 wound around the hoisting machine 20 is suspended at a position above the hoistway 10 after being suspended through a pair of left and right under-car pulleys 50A and 50B provided at the lower part of the car 40. .. The other end of the traction rope 30 is suspended at a position above the hoistway 10 after being suspended through a pulley 70 installed on the counter weight 60. The elevator device rotates and drives the hoisting machine 20, so that the car 40 provided on one side of the traction rope 30 and the counter weight 60 provided on the other side of the traction rope 30 move up and down in the hoistway 10. Moving.

Next, the configuration of the counter weight 60 will be described. FIG. 2 is a front view showing the counter weight of the elevator device according to the embodiment of the present invention, FIG. 3 is a side view of the counter weight according to the embodiment of the present invention, and FIG. 4 is a counter according to the embodiment of the present invention. It is a top view of the weight.

The counterweight 60 has a pair of vertical frames 61a and 61b arranged on both sides, a lower plate 61c connecting the lower ends of the vertical frames 61a and 61b, and an upper plate 61d connecting the upper ends of the vertical frames 61a and 61b. The frame body 61, the main weight 62 laminated on the frame body 61, the pulley 70 attached to the upper plate 61d and around which the traction rope 30 is wound, and the guide devices 63a and 63b arranged at the four corners of the frame body 61, It has 63c and 63d.

In the present embodiment, the position of the counter weight 60 (FIG. 2) when the vertical frames 61a and 61b can be seen on the left and right is the front, the opposite side is the back, and the counter weight 60 is seen to overlap the vertical frames 61a and 61b. The position of (Fig. 3) is defined as the side surface.

The vertical frames 61a and 61b each have a U-shape in cross section orthogonal to the vertical direction (longitudinal direction), and are arranged so that the opening sides face each other and the opposite opening side faces the guide rails 11a and 11b. It has become.

The lower plate 61c is arranged as a pair with the upper plate 61d, and both ends thereof are fixed to the lower parts of the vertical frames 61a and 61b by bolts so as to receive the load of the main weight 62 to be loaded. There is.

Both ends of the upper plate 61d are fixed to the upper portions of the vertical frames 61a and 61b by bolts, and a pulley 70 is rotatably attached to the intermediate portion thereof.

The main weight 62 is narrow so that both ends thereof can be fitted into the vertical frames 61a and 61b having a U-shaped cross-sectional shape when viewed from above, and the central portion thereof is the vertical frames 61a and 61b. It is wider than the width dimension of. In a state where the main weight 62 is attached to the frame body 61, both ends of the main weight 62 are covered with vertical frames 61a and 61b, and the central portion is exposed to the outside. Further, the main weight 62 arranged at the uppermost position is pressed by the weight retainer 64 so that the main weight 62 as a whole does not rattle.

The pulley 70 is rotatably attached to the upper plate 61d, and the traction rope 30 is wound around the pulley 70 to suspend the counter weight 60.

In the guide device 63, the guide device 63a is attached to the upper end of the vertical frame 61a, the guide device 63b is attached to the lower end of the vertical frame 61a, the guide device 63c is attached to the upper end of the vertical frame 61b, and the guide device 63d is attached to the lower end of the vertical frame 61b. The counter weight 60 is guided up and down by sliding contact with 11a and 11b.

By the way, if the structure adds specifications to the existing elevator and the weight of the car increases, it is necessary to increase the weight of the existing counter weight 60 as well. The present embodiment is for increasing the weight of the existing counter weight 60, and in particular, it is possible to handle an elevator device having no additional space above the existing main weight 62. This configuration will be described below.

As shown in FIGS. 2 and 3, the counter weight 60 is provided with a plurality of additional weights 65 on the front surface and the back surface thereof. The additional weight 65 has a divided structure. For example, additional weights 65a, 65b, 65c, and 65d are stacked on one surface (front surface) of the main weight 62 in order from the bottom, and the other surface of the main weight 62 is stacked. Additional weights 65e, 65f, 65g, 65h are stacked on the (back surface). The additional weight 65 is fixed to a portion not covered by the frame body 61, that is, a portion exposed from the frame body 61.

The additional weights 65a, 65d, 65e, and 65h are fixed by embedding bolts 66 embedded in holes 62a formed in the front and back surfaces of the main weight 62. When the main weight 62 is made of iron, the embedded bolt 66 is a fastening bolt having a thread at the tip, and the tip is screwed into the hole 62a. When the main weight 62 is made of concrete, the embedded bolt 66 is an anchor bolt, and the tip end portion is driven into the hole 62a to be fixed. In this embodiment, the additional weight 65 is made of an iron-based metal material.

The additional weights 65b and 65c are sandwiched between the additional weights 65a and 65d, and are fixed by connecting adjacent additional weights with a fixing pin 67 described later. Similarly, the additional weights 65f and 65g are also sandwiched between the additional weights 65e and 65h, and are fixed by connecting the adjacent additional weights with the fixing pin 67. The additional weights 65b, 65c, 65f, and 65g can also be fixed to the main weight 62 by the embedding bolt 66.

In the present embodiment, additional weights 65 can be installed on the front surface and the back surface of the main weight 62. The additional weight 65 plays a role as an adjustment weight, and the number of additional weights 65 is adjusted according to the addition of specifications to the existing elevator. As shown in FIG. 3, the counter weight 60 is arranged in the hoistway 10, but one surface (rear surface) of the counter weight 60 faces the elevating wall 12 and the other surface (front) faces the car 40. To do. In the present embodiment, one surface of the counter weight 60 facing the elevating wall 12 is the elevating wall side, and the other surface of the counter weight 60 facing the car 40 is the car side, with the center of the main weight 62 as a boundary. Define. In the present embodiment, the surface on the car side is the front surface, and the surface on the elevating wall side is the back surface. The additional weight 65 can be fixed to the front and the back.

Since one surface side (rear side) of the counter weight 60 located on the elevating wall side is close to the elevating wall 12, when the additional weights 65e, 65f, 65g, 65h are attached to the main weight 62, the operator It easily interferes with the elevating wall 12. Therefore, when attaching the additional weight 65 to the main weight 62, the additional weights 65a and 65b are given priority to the other surface side (front side) of the counter weight 60 located on the car side in order. , 65c, 65d should be installed. Since the other surface side (front side) of the counter weight 60 located on the car side is relatively far from the car 40, the operator does not interfere with the car 40 and the additional weight 65a, 65b, 65c, 65d can be attached, and workability is good. If the installation work of the additional weights 65a, 65b, 65c, 65d is completed and the additional weight 65 is required, the additional weights 65e, 65f, 65g, after the installation work of the additional weights 65a, 65b, 65c, 65d is completed, It is good to attach 65h.

Next, the fixing pin 67 will be described. FIG. 5 is a perspective view showing a main part of the additional weight according to the embodiment of the present invention, and FIG. 6 is a cross-sectional view of a connecting part of the additional weight according to the embodiment of the present invention.

The additional weights 65 are laminated on the front surface and the back surface of the main weight 62, and adjacent additional weights 65 (for example, the additional weights 65b and the additional weights 65c) are connected to each other by a fixing pin 67.

The fixing pin 67 is embedded in a hole 68 formed in the upper surface and the lower surface of the additional weight 65, and the lower side of the fixing pin 67 is inserted into the hole 68 formed in the upper surface of the lower additional weight 65b. , The upper side of the fixing pin 67 is inserted into the hole 68 formed in the lower surface of the additional weight 65c on the upper side. That is, the fixing pin 67 is provided at a position where the additional weights 65 face each other, and the additional weights 65 are connected to each other. Further, on one end side and the other end side of the fixing pin 67, a fixing bolt 80 that can be inserted into a hole 69 formed in one surface (front surface or back surface in this embodiment) having an additional weight 65 is screwed. It has become. The fixing pin 67 is fixed to the additional weight 65 by the fixing bolt 80.

In the present embodiment, when increasing the weight of the existing counter weight 60, holes 62a are bored in the front surface and the back surface of the main weight 62. Next, the additional weights 65a and 65e located at the lowermost part are fixed by the embedding bolts 66. That is, the embedding bolt 66 is inserted into the additional weights 65a and 65e, and the tip thereof is fixed in the hole 62a. After that, the additional weights 65b, 65c, 65d are stacked on the additional weights 65a. At this time, the adjacent additional weights 65 are connected to each other by the fixing pin 67. That is, the lower side of the fixing pin 67 is inserted into the hole 68 on the upper surface of the additional weight 65 on the lower side, and the upper side of the fixing pin 67 is inserted into the hole 68 on the lower surface of the additional weight 65 on the upper side. While inserting the fixing bolt 80 from the hole 69, the fixing bolt 80 is screwed into the fixing pin 67. In the same manner, the additional weights 65f, 65g and 65h are stacked on the additional weight 65e. Then, the additional weights 65d and 65h located at the uppermost portion are fixed by the embedding bolts 66.

As described above, the present embodiment includes a car 40 suspended by a traction rope and a counter weight 60, and the counter weight 60 is configured by stacking a plurality of main weights 62. In the elevator device, a hole 62a formed in the front surface of the main weight 62, an embedded bolt 66 embedded in the hole 62a, and an additional weight 65 fixed to the embedded bolt 66 are provided.

According to such a configuration, by fixing the additional weight 65 to the side surface of the main weight 62 with the embedding bolt 66, the weight of the counter weight 60 can be increased even if there is no space above the existing main weight 62. Can be done. Further, the main weight 62 can be made of iron or concrete.

Further, when installing the additional weight 65, it is not necessary to perform processing such as drilling holes in the frame body 61, so that the strength of the frame body 61 can be ensured.

Further, in this embodiment, in addition to the above configuration, the additional weights 65 are divided into a plurality of pieces, which are stacked on the side surface of the main weights 62, and the adjacent additional weights 65 are connected to each other by the fixing pin 67.

According to such a configuration, the transportability and the assembling property can be improved by dividing the additional weight 65. Further, by connecting the additional weights 65 adjacent to each other by the fixing pin 67, it is possible to prevent the additional weights 65 from shifting or rattling.

The present invention is not limited to the above-described embodiment, and includes various modified examples. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. It is also possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

10 ... hoistway, 11a, 11b ... guide rail, 12 ... elevating wall, 16 ... fixing bolt, 20 ... hoisting machine, 30 ... traction rope, 40 ... car, 50A, 50B ... under-car pulley, 60 ... counter weight , 61 ... Frame body, 61a, 61b ... Vertical frame, 61c ... Lower plate, 61d ... Upper plate, 62 ... Main weight, 62a ... Hole, 63a, 63b, 63c, 63d ... Guide device, 64 ... Weight holder, 65, 65a, 65b, 65c, 65d, 65e, 65f, 65g, 65h ... additional weight, 66 ... embedded bolt, 67 ... fixing pin, 68, 69 ... hole, 70 ... pulley, 80 ... fixing bolt

Claims (13)

In a counter weight having a frame body and a main weight laminated in the frame body,
A counter weight characterized in that an additional weight is fixed to the main weight. In claim 1,
The frame body is composed of a pair of vertical frames extending in the vertical direction, an upper plate fixed to the upper end portions of the pair of vertical frames, and a lower plate fixed to the lower end portions of the pair of vertical frames.
The pair of vertical frames have a U-shaped cross section orthogonal to the vertical direction, and the U-shaped opening sides are arranged so as to face each other.
Both ends of the main weight are inserted into the openings of the vertical frame, and the central portion is exposed from the frame body.
The additional weight is a counter weight that is fixed to the central portion of the main weight. In claim 1 or 2,
A counter weight having a plurality of the additional weights and being stacked and arranged in the vertical direction. In claim 1 or 2,
A counter weight characterized in that a hole is formed in the main weight, and the additional weight is fixed to the main weight by an embedded bolt embedded in the hole. In claim 3,
The plurality of additional weights are counter weights characterized in that adjacent additional weights are connected by fixing pins provided at positions facing each other. In claim 5,
The counter weight is provided with a fixing bolt for fixing the fixing pin to the additional weight. A hoisting machine, a traction rope wound around the hoisting machine, a car that is provided on one of the traction ropes and moves in the hoistway, and a car that is provided on the other side of the traction rope and moves in the hoistway. In an elevator device equipped with a counter-weight
The counter weight includes a frame body and a main weight laminated in the frame body.
An elevator device characterized in that an additional weight is fixed to the main weight. In claim 7,
The frame body is composed of a pair of vertical frames extending in the vertical direction, an upper plate fixed to the upper end portions of the pair of vertical frames, and a lower plate fixed to the lower end portions of the pair of vertical frames.
The pair of vertical frames have a U-shaped cross section orthogonal to the vertical direction, and the U-shaped opening sides are arranged so as to face each other.
Both ends of the main weight are inserted into the openings of the vertical frame, and the central portion is exposed from the frame body.
The elevator device is characterized in that the additional weight is fixed to a central portion of the main weight. In claim 7 or 8,
An elevator device having a plurality of additional weights and being stacked and arranged in the vertical direction. In claim 7 or 8,
An elevator device characterized in that a hole is formed in the main weight, and the additional weight is fixed to the main weight by an embedded bolt embedded in the hole. In claim 9.
An elevator device characterized in that the plurality of additional weights are connected by fixing pins provided at positions where adjacent additional weights face each other. 11.
An elevator device characterized in that the additional weight is provided with a fixing bolt for fixing the fixing pin. In claim 9.
The counter weights are arranged so as to face each of the car and the elevating wall of the hoistway, and the additional weights face the surface of the main weight facing the car and the elevating wall. It can be fixed to the surface of the main weight and
When adding the additional weight, the elevator device is characterized in that the surface of the main weight facing the car is prioritized and the additional weight is fixed.

Images