JP2011037581A - Elevator counterweight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator counterweight having a guide roller installed in a limited space. <P>SOLUTION: The counterweight ascending and descending while guided by a pair of right and left weight side guide rails, includes: a weight body for storing a weight; and a first guide roller which rolls on the surface of the weight side guide rails so as to position the weight body in a lateral direction, and which is rotatably supported on the weight body. The first guide roller is installed so that at least a portion thereof is located inside the weight body. This allows the first guide roller to be installed within the limited space while avoiding interference with a weight side sheave suspending the counterweight, thereby reducing vibrations and noise caused during ascending and descending. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  More particularly, the present invention relates to a counterweight of an elevator, and more specifically, a guide roller that rolls on the surface of a weight-side guard rail and guides the lifting and lowering of the counterweight can be mounted in a limited space of the counterweight. Regarding technology.

  Conventionally, in an elevator, a main rope is wound around a traction sheave of a hoist, and a counterweight is suspended at the other end while a car is suspended at one end of the main rope.

Here, the structure of the counterweight will be outlined with reference to FIG. 8. The counterweight 1 of the machine room-less elevator is guided by a pair of left and right weight side guide rails 2L and 2R, and moves up and down in the hoistway. A number of weight plates 5 are placed on the lower beam 4 that connects the lower ends of the pair of left and right vertical beams 3a and 3b.
A pair of left and right weight sheaves 7a and 7b are rotatably supported on the upper beam 6 that connects the upper ends of the pair of left and right vertical beams 3a and 3b, and a main rope 8 is wound around the upper beam 6.
Further, guide shoes 9 are attached to the upper and lower portions of the vertical beams 3a and 3b, respectively, and slide on the surfaces of the weight side guide rails 2L and 2R to guide the raising and lowering of the counterweight 1 (for example, (See Patent Document 1 below).

JP 2007-55773 A

  By the way, the above-described counterweight 1 has a structure in which the guide shoe 9 is used to guide its lifting and lowering. Therefore, not only the weight side guide rails 2L and 2R need to be periodically lubricated but also a structure using guide rollers. Compared to other counterweights, there is room for improvement in terms of vibration and noise.

However, a pair of left and right weight-side sheaves 7a and 7b are provided on the counterweight 1 described above.
As a result, the counterweight 1 is positioned in the left-right direction among the guide roller assemblies that roll on the surfaces of the weight-side guide rails 2L, 2R to guide the lifting and lowering while positioning the counterweight 1 in the front-rear and left-right directions. It is not possible to secure a space for mounting the guide roller.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art and provide an elevator balancing weight in which a guide roller is mounted in the limited space.

The means described in claim 1 for solving the above problem is as follows.
A counterweight that is guided by a pair of left and right weight side guide rails to move up and down,
A weight body that houses the weight;
A first guide roller that is rotatably supported by the weight body, and rolls on the surface of the weight side guide rail to position the weight body in the left-right direction;
The first guide roller is arranged so that at least a part thereof is positioned inside the weight main body.

That is, the balance weight of the elevator according to claim 1 has a structure in which at least a part of the first guide roller for positioning the weight body in the left-right direction is disposed inside the weight body. The first guide roller can be attached to the weight main body while avoiding interference with the weight-side sheave for suspending the weight.
In addition, since the guide shoe for positioning the weight body in the left-right direction can be eliminated, vibrations and noises that occur as a result of raising and lowering can be reduced.

  According to a second aspect of the present invention, there is provided the elevator balancing weight according to the first aspect, wherein the weight side guide rail is formed in an L shape in cross section and a pair of adjacent inner side surfaces thereof. Is arranged so as to sandwich the outer periphery of the first guide roller in the front-rear direction.

That is, in the elevator balancing weight according to claim 2, the outer peripheral portion of the first guide roller rolls over both of a pair of adjacent inner side surfaces of the weight-side guide rail having an L-shaped cross section. It is a structure to do.
As a result, the counterweight can be positioned in the left-right direction and the front-rear direction by the first guide roller, so that an additional guide roller for positioning the counterweight in the front-rear direction becomes unnecessary, and the balance weight is limited. The first guide roller can be easily mounted in the space formed.

The means described in claim 3 is the counterweight of the elevator described in claim 1,
A cross-sectional shape of the weight side guide rail is formed in a U shape,
A second guide roller that is rotatably supported by the weight body, and rolls on the surface of the weight side guide rail to position the weight body in the front-rear direction;
The first and second guide rollers are arranged in a space between a pair of inner side surfaces extending in the left-right direction in parallel with each other in the weight side guide rail.

That is, the elevator counterweight described in claim 3 has a structure in which the first and second guide rollers are disposed in the inner space of the weight side guide rail having a U-shaped cross section.
Accordingly, the space in the front-rear direction necessary for disposing the second guide roller as compared with the structure in which the pair of second guide rollers for positioning the weight body in the front-rear direction is arranged in the front-rear direction. Therefore, it is possible to mount the guide roller in a limited space of the counterweight.
At this time, a pair of upper and lower second guide rollers are disposed offset in the front-rear direction, and one second guide roller rolls on one inner side surface of the weight side guide rail, and the other second guide roller By configuring the guide roller to roll on the other inner side surface, the weight main body can be lifted and lowered smoothly without being displaced in the front-rear direction.

The means described in claim 4 is the counterweight of the elevator described in claim 3,
The second guide roller has an outer diameter slightly smaller than a distance in the front-rear direction between the pair of inner side surfaces.

That is, in the elevator balancing weight described in claim 4, the single second guide roller disposed in the inner space of the weight side guide rail having a U-shaped cross section is parallel to the weight side guide rail. In this structure, the weight main body is positioned in the front-rear direction while contacting any one of the pair of front and rear inner side surfaces extending in the left-right direction.
Thereby, since one second guide roller for positioning the weight body in the front-rear direction can be provided, the guide roller can be mounted in a limited space of the counterweight.

The means described in claim 5 for solving the above problem is
A counterweight that is guided by a pair of left and right weight side guide rails to move up and down,
A weight body that houses the weight;
A first guide shoe rotatably supported by the weight body, which slides on the surface of the weight side guide rail to position the weight body in the left-right direction;
And a second guide roller rotatably supported by the weight body, which rolls on the surface of the weight side guide rail to position the weight body in the front-rear direction.

That is, the elevator counterweight described in claim 5 has a structure in which the first guide shoe is used for positioning in the left-right direction but the second guide roller is used for positioning in the front-rear direction.
This makes it possible to mount the guide roller in a limited space of the counterweight while reducing the size of the first guide shoe and avoiding interference with the weight side sheave. Therefore, vibration and noise can be reduced.

The means described in claim 6 is the balance weight of the elevator described in claim 5,
A second guide shoe that slides on the surface of the weight side guide rail to position the weight body in the front-rear direction;
The second guide roller and the second guide shoe are arranged so as to sandwich the weight side guide rail in the front-rear direction.

  That is, in the elevator counterweight described in claim 6, by reducing the second guide shoe, the front and rear necessary for juxtaposing the second guide roller and the second guide shoe in the front-rear direction are provided. Since the direction space can be reduced, the guide roller can be mounted in a limited space of the counterweight.

  ADVANTAGE OF THE INVENTION According to this invention, the counterweight of the elevator which equipped the guide roller in the limited space can be provided.

The front view which shows the counterweight of the elevator of 1st Embodiment. The principal part expanded sectional view of the guide apparatus shown in FIG. The top view of the guide apparatus shown in FIG. The top view which shows the guide apparatus of a 1st modification. The top view which shows the guide apparatus of a 2nd modification. The top view which shows the guide apparatus of 2nd Embodiment. The top view which shows the guide apparatus of 3rd Embodiment. The top view which shows the guide apparatus of a 3rd modification. The front view which shows the counterweight of the conventional elevator.

Hereinafter, with reference to FIG. 1 thru | or FIG. 7, each embodiment of the balance weight of the elevator which concerns on this invention is described in detail.
In the following description, the same reference numerals are used for the same parts including the above-described prior art, and redundant description is omitted, and the direction connecting the pair of left and right weight side guide rails is the left-right direction, and the vertical direction The direction is the up-down direction, and the direction perpendicular to the left-right direction and the up-down direction is referred to as the front-rear direction.

1st Embodiment First, with reference to FIGS. 1-3, the counterweight of 1st Embodiment is demonstrated.

  An elevator balancing weight 100 shown in FIG. 1 is guided by a pair of left and right weight-side guide rails 2L and 2R, and moves up and down in the hoistway. And four guide devices 20 attached to the respective parts.

The weight main body 10 has a structure in which the lower ends of a pair of left and right vertical beams 11 a and 11 b are connected to each other by a lower beam 12 and a large number of weight plates 5 are placed on the lower beam 12.
A pair of left and right weight side sheaves 7a and 7b for suspending the counterweight 100 are rotatably supported on the upper beam 13 that connects the upper ends of the pair of left and right vertical beams 11a and 11b. A rope 8 is wound.

Since the four guide devices 20 have the same structure, the guide device 20 attached to the upper right portion of the counterweight 100 will be described with reference to FIGS. 2 and 3.
The guide device 20 includes a bracket 21 fixed to the right vertical beam 11b with a bolt (not shown), a first guide roller 22 rotatably supported by the bracket 21, and a pair of front and rear second members. Guide rollers 23 and 24 are provided.

The bracket 21 is in close contact with the right end surface of the vertical beam 11b and extends in the vertical direction. The bracket 21 is connected to the fixed portion 21a and extends horizontally from the opening 11c of the vertical beam 11b to the inside of the weight body 10. A portion 21b and a vertical wall portion 21c that is further provided on the horizontal portion 21b and extends in the vertical direction are provided.
As shown in FIG. 2, the first guide roller 22 that rolls on the distal end surface 2 a of the weight side guide rail 2 </ b> R and positions the weight body 10 in the left-right direction is provided on the vertical wall portion 21 c of the bracket 21. It is supported and rotates about a horizontal axis extending in the front-rear direction.
Further, as shown in FIG. 3, there are a pair of front and rear second guide rollers 23 and 24 that roll on the front and rear side surfaces 2b and 2c of the weight side guide rail 2R to position the weight body 10 in the front and rear direction. The bracket 21 is supported by the fixed portion 21a and rotates around a horizontal axis extending in the left-right direction.

That is, in the elevator balancing weight 100 of the first embodiment, the first guide rollers 22 in the respective guide devices 20 respectively attached to the left and right of the upper part of the weight body 10 are substantially entirely of the weight body 10. It arrange | positions so that it may be located inside.
Thereby, these 1st guide rollers 22 do not interfere with a pair of right and left weight side sheaves 7a and 7b, respectively.
Further, since these first guide rollers 22 are arranged in the gap between the upper beam 13 and the weight plate 5, they do not interfere with the weight plate 5.
Further, as shown in FIG. 1, the first guide rollers 22 in the respective guide devices 20 attached to the left and right of the lower part of the weight body 10 are respectively disposed below the weight body 10, and the weight body 10. There is no interference with.

  Therefore, in the elevator balancing weight 100 of the first embodiment, the first guide rollers 22 are respectively mounted in the limited space of the weight body 10 to position the weight body 10 in the left-right direction. Since the guide shoe can be eliminated, it is possible to reduce vibrations and noises that occur with the up and down movement.

First Modification Next, an elevator balancing weight 110 according to a first modification will be described with reference to FIG.

In the counterweight 110 of the first modification shown in FIG. 4, guide devices 30 are attached to the left and right of the upper part of the weight body 10.
The guide device 30 includes a bracket 31 fixed to the vertical beam 11b with a bolt (not shown), a first guide shoe 32 fixed to the bracket 31, and a front and rear rotatably supported by the bracket 31. A pair of second guide rollers 33 and 34 is provided.

The first guide shoe 31 slides on the distal end surface 2a of the weight side guide rail 2R to position the weight body 10 in the left-right direction.
The pair of front and rear second guide rollers 33 and 34 are supported by the bracket 31 and rotate around a horizontal axis extending in the left-right direction while sandwiching the weight side guide rail 2 in the front-rear direction. ing.

That is, the counterweight 110 according to the first modification is obtained by replacing the first guide roller 22 in the counterweight 100 according to the first embodiment with the first guide shoe 32.
Thereby, even when the space which arrange | positions the 1st guide roller 22 between the weight side sheaves 7a and 7b and the weight board 5 cannot be ensured, the weight main body 10 can be reliably positioned in the left-right direction.
In addition, since the horizontal dimension of the guide device 30 can be greatly shortened, the guide device 30 can be placed at any position in the vertical direction on the left and right side surfaces of the pair of left and right vertical beams 11a and 11b of the weight body 10. Can be worn.
Furthermore, since the weight main body 10 is positioned in the front-rear direction by the pair of front and rear second guide rollers 33 and 34, vibrations and noises generated as the weight main body 10 is raised and lowered can be reduced.

Second Modified Example Next, an elevator balancing weight 120 according to a second modified example will be described with reference to FIG.

The counterweight 120 of the second modification shown in FIG. 5 is obtained by replacing the guide device 30 in the first modification described above with a separate guide device 35.
This guide device 35 replaces one of a pair of front and rear second guide rollers 33, 34 in the guide device 30 of the first modified example with a second guide shoe 36, and replaces the flat bracket 31 with an L-shaped bracket 37. It has been replaced with.

That is, in the counterweight 120 of the second modified example, the dimension of the guide device 35 in the front-rear direction can be greatly shortened.
Thereby, this guide apparatus 35 can be mounted | worn in arbitrary places of an up-down direction among the left-right side surfaces of the left-right paired vertical beam 11a, 11b of the weight main body 10. FIG.

Second Embodiment Next, an elevator balancing weight 200 according to a second embodiment will be described with reference to FIG.

  In the counterweight 200 of the second embodiment, each guide device 20 in the counterweight 100 of the first embodiment described above is replaced with the guide device 40 shown in FIG. 6, and the cross-sectional shape of the weight side guide rail is changed. It has been changed to an L shape.

  As shown in FIG. 6, the guide device 40 includes a bracket 41 fixed to the vertical beam 11b with a bolt (not shown), and a first guide roller 42 rotatably supported by the bracket 41. is doing.

The bracket 41 includes a fixed portion 41a that is in close contact with the right side surface of the vertical beam 11b and extends in the vertical direction, and a horizontal portion that is connected to the fixed portion 41a and extends horizontally from the opening 11c of the vertical beam 11b to the inside of the weight body 10. 41b, and a vertical wall portion 41c that is connected to the horizontal portion 41b and extends in the vertical direction.
The first guide roller 42 is supported by the vertical wall portion 41c of the bracket 41 and rotates around a horizontal axis extending in the front-rear direction.

The weight-side guide rail 43 has an L-shaped cross section, and is disposed such that a pair of adjacent inner side surfaces 43a and 43b sandwich the outer periphery of the first guide roller 42 in the front-rear direction. ing.
Specifically, the pair of inner side surfaces 43a and 43b are inclined with respect to the axis C while being inclined at 45 degrees with respect to the axis C extending in the left-right direction through the center of the first guide roller 42. They are arranged so as to be symmetrical in the front-rear direction.

That is, in the counterweight 200 according to the second embodiment, the outer periphery of the first guide roller 42 is formed on both of the pair of adjacent inner side surfaces 43a and 43b in the weight-side guide rail 43 having an L-shaped cross section. It is a structure that rolls across.
Thereby, since the weight main body 10 can be positioned in the left-right direction and the front-back direction by one first guide roller 42, an additional guide roller for positioning the weight main body 10 in the front-rear direction is unnecessary.
Thereby, the first guide roller 42 can be easily mounted in the limited space of the counterweight 200.

Third Embodiment Next, an elevator balancing weight 300 according to a third embodiment will be described with reference to FIG.

  In the counterweight 300 of the third embodiment, each guide device 20 in the counterweight 100 of the first embodiment described above is replaced with the guide device 50 shown in FIG. 7, and the cross-sectional shape of the weight side guide rail is changed. It has been changed to a U-shape.

  As shown in FIG. 7, the guide device 50 includes a bracket 51 fixed to the vertical beam 11b with bolts (not shown), and first and second guide rollers rotatably supported by the bracket 51, respectively. 52, 53.

The bracket 51 includes a fixed portion 51a that is in close contact with the right side surface of the vertical beam 11b and extends in the vertical direction, and a horizontal portion that is connected to the fixed portion 51a and extends horizontally from the opening 11c of the vertical beam 11b to the inside of the weight body 10. 51b, and a vertical wall portion 51c that is connected to the horizontal portion 51b and extends in the vertical direction.
The first guide roller 52 is supported by the vertical wall portion 51c of the bracket 51 and rotates around a horizontal axis extending in the front-rear direction.
The second guide roller 53 is supported by the fixed portion 51a of the bracket 51 and rotates around a horizontal axis extending in the left-right direction.

The weight-side guide rail 54 is formed in a U-shaped cross-section, and the back side surface 54a of the inner side surface extends in the front-rear direction, and a pair of front and rear side surfaces 54b, 54c that extend in parallel to face each other. Are arranged so as to extend in the left-right direction.
As a result, the first guide roller 52 rolls on the side surface 54a at the back to position the weight body 10 in the left-right direction.

On the other hand, the value of the outer diameter D of the second guide roller 53 is slightly smaller than the value of the space dimension W in the front-rear direction of the pair of side surfaces 54b, 54c extending in parallel with each other on the weight side guide rail 54, for example 1-2. It is set as small as millimeters.
As a result, the second guide roller 53 rolls on one side surface 54b in some cases and rolls on the other side surface 54c in some cases to position the weight body 10 in the front-rear direction.

That is, the counterweight 300 of the third embodiment has a structure in which the first and second guide rollers 52 and 53 are disposed in the inner space of the weight-side guide rail 54 having a U-shaped cross section.
As a result, the guide device 50 has dimensions in the front-rear direction as compared with a structure in which the second guide rollers 23 and 24 are arranged in the front-rear direction as in the guide device 20 of the first embodiment shown in FIG. Therefore, the first and second guide rollers 52 and 53 can be easily mounted in the limited space of the counterweight 300.

Third Modified Example Next, with reference to FIG. 8, a modified example of the above-described elevator counterweight 300 according to the third embodiment will be described.

The guide device 50 in the counterweight 300 of the third embodiment described above has a structure that uses only one second guide roller 53.
On the other hand, the guide device 55 of the counterweight 310 of the third modification has a structure using a pair of upper and lower second guide rollers.

More specifically, one second guide roller 56 is disposed above the first guide roller 52 in the inner space of the weight-side guide rail 54 having a U-shaped cross section. The other second guide roller 57 is disposed on the lower side.
The outer diameter D2 of the second guide rollers 56 and 57 is considerably smaller than the outer diameter D1 of the second guide roller 53 in the guide device 50 of the third embodiment.
One of the second guide rollers 56 always rolls on one inner side surface 54b, and the other second guide roller 56 always rolls on the other inner side surface 54c. Positioning in the front-rear direction.

That is, the counterweight 310 of the third modified example has a structure in which the pair of upper and lower second guide rollers 56 and 57 always contacts the inner side surfaces 54 b and 54 c of the weight side guide rail 54.
Thereby, since the weight main body 10 does not displace in the front-rear direction as it moves up and down, it is particularly suitable as a guide device that guides the lifting and lowering of the heavy weight 310.

As mentioned above, although each embodiment of the balance weight of the elevator which concerns on this invention was described in detail, it cannot be overemphasized that this invention is not limited by each embodiment mentioned above, and a various change is possible.
For example, in the counterweight 100 of the first embodiment described above, the first guide roller 22 of the guide device 20 attached to the lower part of the weight body 10 is disposed below the weight body 10. Needless to say, the first guide roller 22 can be disposed inside the weight body 10 like the guide device 20 attached to the upper portion of the weight 10.
Further, by using the guide device 20 of the first embodiment at the lower part of the weight body 10 and using the guide device 30 of the first modification at the upper part of the weight body 10, interference with the weight side sheaves 7a and 7b is avoided. However, the guide roller can be disposed in a limited space of the counterweight.

DESCRIPTION OF SYMBOLS 1 Conventional counterweight 2L, 2R Weight side guide rail 3a, 3b Vertical beam 4 Lower beam 5 Weight plate 6 Upper beam 7a, 7b Weight side guide sheave 8 Main rope 9 Guide shoe 10 Weight main body 11a, 11b Vertical beam 11c Opening 12 Lower beam 13 Upper beam 20 Guide device 21 Bracket 22 First guide roller 23, 24 Second guide roller
30 Guide Device of First Modification 31 Bracket 32 First Guide Shoe 33, 34 Second Guide Roller 35 Guide Device of Second Modification 36 Second Guide Shoe 37 Bracket 40 Guide Device of Second Embodiment 41 Bracket 42 First Guide Roller 43 Weight Side Guide Rail of Second Embodiment 50 Guide Device of Third Embodiment 51 Bracket 52 First Guide Roller 53 Second Guide Roller 54 Weight Side Guide Rail of Third Embodiment 55 First Guide device 56 according to the third modification 56, 57 The second guide roller 100 The counterweight 110 according to the first embodiment The counterweight 120 according to the first modification The counterweight 120 according to the second modification 200 The counterweight 200 according to the second embodiment 300 Counterweight according to the third embodiment

Claims (6)

A counterweight that is guided by a pair of left and right weight side guide rails to move up and down,
A weight body that houses the weight;
A first guide roller that is rotatably supported by the weight body, and rolls on the surface of the weight side guide rail to position the weight body in the left-right direction;
The balance weight of an elevator, wherein the first guide roller is disposed so that at least a part of the first guide roller is located inside the weight body.   The weight-side guide rail has an L-shaped cross section, and is disposed so that a pair of adjacent inner side surfaces sandwich the outer peripheral portion of the first guide roller in the front-rear direction. The elevator counterweight according to claim 1. A cross-sectional shape of the weight side guide rail is formed in a U shape,
A second guide roller that is rotatably supported by the weight body, and rolls on the surface of the weight side guide rail to position the weight body in the front-rear direction;
The said 1st and 2nd guide roller is arrange | positioned in the space between a pair of inner side surfaces which extend in the left-right direction in parallel with each other among the said weight side guide rails. Elevator counterweight.   4. The elevator counterweight according to claim 3, wherein the second guide roller has an outer diameter slightly smaller than a distance in the front-rear direction of the pair of inner side surfaces. A counterweight that is guided by a pair of left and right weight side guide rails to move up and down,
A weight body that houses the weight;
A first guide shoe rotatably supported by the weight body, which slides on the surface of the weight side guide rail to position the weight body in the left-right direction;
An elevator fishing, comprising: a second guide roller that is rotatably supported by the weight body and rolls on the surface of the weight side guide rail to position the weight body in the front-rear direction. Joint weight. A second guide shoe that slides on the surface of the weight side guide rail to position the weight body in the front-rear direction;
6. The elevator counterweight according to claim 5, wherein the second guide roller and the second guide shoe are arranged so as to sandwich the weight side guide rail in the front-rear direction.

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