JP2005145645A

JP2005145645A - Unit weight and counterweight for elevator with usage of it

Info

Publication number: JP2005145645A
Application number: JP2003385195A
Authority: JP
Inventors: Daiki Morikura; 大樹森倉; Takao Nishida; 隆雄西田
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2003-11-14
Filing date: 2003-11-14
Publication date: 2005-06-09

Abstract

<P>PROBLEM TO BE SOLVED: To provide a counterweight for an elevator with the usage of a unit weight whereby sufficient stacking state can be achieved even when warping occurs, and thereby breakage or noise can be prevented, and assembly and conveyance can be facilitated. <P>SOLUTION: The counterweight for the elevator with the usage of the unit weight is provided with two side frames vertically arranged so as to have a predetermined space, and the unit weight having both ends fitted to the side frames and protrusions on both ends of a surface along the longitudinal direction so as to have a recessed part between the protrusions. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、エレベータに使用される単位おもりと、この単位おもりを用いたエレベータ用釣合い重りに関するものである。 The present invention relates to a unit weight used for an elevator and an elevator counterweight using the unit weight.

従来の単位おもりを用いたエレベータ用釣合い重りには、所要重量の大部分を占める直方体状の大形おもり体と、この大形おもり体の上部に結合され上枠と側枠とで門状に形成された枠体と、この枠体内に積層された単位おもりとを備えたものがある（例えば、特許文献１参照）。 A conventional balance weight for an elevator using a unit weight is a rectangular parallelepiped large weight body that occupies most of the required weight, and is joined to the upper part of this large weight body in a gate shape with an upper frame and a side frame. Some have a formed frame and a unit weight stacked in the frame (see, for example, Patent Document 1).

実開平２−７２６５号公報Japanese Utility Model Publication No. 2-7265

特許文献１記載のエレベータ用釣合い重りでは、大形おもり体の上部に形成された枠体内に、直方体状を呈する単位おもりが積層されている。このような直方体状の単位おもりは、一般に鋳造により製造されており、長手方向に反りが生じる等の製造上の変形を防止することが困難となっている。図９は従来の単位おもりの１つに反りが生じた場合の模式図、図１０は図９の反りが生じた単位おもりに作用する曲げモーメント線図である。図において、従来のような直方体状の単位おもり２の１つに、上方に凸状を呈する反りが生じた場合には、反りの生じた単位おもり２ｃの上面（凸側）では最上部２ｆの１点で、また単位おもり２ｃの下面（凹側）では両端部の２点で、他の単位おもり２あるいは下枠１ａに接触する。したがって、反りの生じた単位おもり２ｃより上方に位置する単位おもり２の荷重は、単位おもり２ｃの中央部に集中的に作用することになる。このため、反りの生じた単位おもり２ｃには過大な曲げモーメントが作用し、鋳造によって製造された強度の低い単位おもり２ｃでは、その曲げモーメントに耐えることができないという問題があった。このような問題に対し、単位おもり２の厚みを増すなどの対策が考えられるが、重量の増加に伴い、据付及び運搬等の作業性が悪化するという新たな問題が生じることになる。また、反りの生じた単位おもり２ｃの上面では、上方に載置された単位おもり２と１点で接触しているため、上方の単位おもり２が不安定になり、釣合い重りがガイドレールを昇降する際に単位おもり２が揺れて異音が発生するという問題も生じていた。 In the elevator counterweight described in Patent Document 1, a unit weight having a rectangular parallelepiped shape is stacked in a frame formed on the upper part of a large weight body. Such a rectangular parallelepiped unit weight is generally manufactured by casting, and it is difficult to prevent manufacturing deformation such as warping in the longitudinal direction. FIG. 9 is a schematic diagram when one of the conventional unit weights is warped, and FIG. 10 is a diagram of a bending moment acting on the unit weight where the warp is generated in FIG. In the figure, when one of the conventional unit weights 2 having a rectangular parallelepiped shape has a warp that has a convex shape upward, the upper surface (convex side) of the warped unit weight 2c has the uppermost portion 2f. At one point and at the lower surface (concave side) of the unit weight 2c, the two points at both ends contact the other unit weight 2 or the lower frame 1a. Therefore, the load of the unit weight 2 located above the unit weight 2c where the warp has occurred acts on the central portion of the unit weight 2c in a concentrated manner. For this reason, an excessive bending moment acts on the unit weight 2c in which the warp has occurred, and the unit weight 2c having a low strength produced by casting has a problem that it cannot withstand the bending moment. Although measures such as increasing the thickness of the unit weight 2 can be considered for such problems, a new problem arises that workability such as installation and transportation deteriorates as the weight increases. Further, since the upper surface of the unit weight 2c warped is in contact with the unit weight 2 placed above at one point, the upper unit weight 2 becomes unstable and the counterweight moves up and down the guide rail. In doing so, there was a problem that the unit weight 2 was shaken and an abnormal noise was generated.

また、単位おもり２が直方体状を呈することから、据付及び運搬の際に手掛かりとなる部分がなく、作業性が悪いという問題もあった。 Further, since the unit weight 2 has a rectangular parallelepiped shape, there is no part that becomes a clue during installation and transportation, and there is a problem that workability is poor.

この発明は、上述のような課題を解決するためになされたもので、その目的は、反りが生じた場合でも良好な積層状態を得ることによって破壊や異音の発生を防止するとともに、取り扱いを容易にすることができる単位おもりを提供することである。 The present invention has been made to solve the above-described problems, and its purpose is to prevent destruction and generation of abnormal noise by obtaining a good laminated state even when warping occurs, and to handle it. Is to provide a unit weight that can be made easy.

この発明に係る単位おもりは、長手方向の一面両端部にそれぞれ凸部が設けられることによって、凸部間に凹部が形成されたものである。 The unit weight according to the present invention is such that concave portions are formed between the convex portions by providing convex portions at both ends of one surface in the longitudinal direction.

この発明は、単位おもりの長手方向の一面両端部にそれぞれ凸部が設けられることによって、凸部間に凹部が形成される構成としたことで、反りが生じた場合でも良好な積層状態を得ることによって破壊や異音の発生を防止するとともに、取り扱いを容易にすることが可能となる。 According to the present invention, a convex portion is provided at each end of one surface in the longitudinal direction of the unit weight, so that a concave portion is formed between the convex portions, thereby obtaining a good laminated state even when warpage occurs. As a result, it is possible to prevent destruction and generation of abnormal noise and to facilitate handling.

実施の形態１．
図１はこの発明の実施の形態１におけるエレベータ用釣合い重りの斜視図、図２はこの発明の実施の形態１における単位おもりの斜視図、図３はこの発明の実施の形態１における単位おもりの１つに反りが生じた場合の模式図、図４は図３の反りが生じた単位おもりに作用する曲げモーメント線図である。 Embodiment 1 FIG.
1 is a perspective view of an elevator counterweight according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of a unit weight according to Embodiment 1 of the present invention, and FIG. 3 is a diagram of a unit weight according to Embodiment 1 of the present invention. FIG. 4 is a schematic diagram when a warp occurs in one, and FIG. 4 is a diagram of a bending moment acting on a unit weight in which the warp in FIG. 3 occurs.

図において、釣合い重りの四方枠（上枠は図示せず）のうち、横断面がコ字状を呈する側枠１が、互いに開口側が対向するように所定の間隔を有して立設されている。略直方体状を呈する単位おもり２は、その長手方向両端部がコ字状を呈する側枠１の開口部に係合するように四方枠内に複数載置されている。また、この単位おもり２の下面には、長手方向両端部に凸部２ａが設けられることによって、凸部２ａ間となる下面中央部に短手方向に渡って凹部が形成されている。このため、四方枠内に載置された単位おもり２には、各単位おもり２の境界中央部に直方体状の間隙が設けられている。 In the figure, among four counterweight frames (the upper frame is not shown), side frames 1 having a U-shaped cross section are erected with a predetermined interval so that the opening sides face each other. Yes. A plurality of unit weights 2 having a substantially rectangular parallelepiped shape are placed in the four-sided frame such that both end portions in the longitudinal direction engage with the openings of the side frame 1 having a U-shape. Further, the lower surface of the unit weight 2 is provided with convex portions 2a at both ends in the longitudinal direction, so that a concave portion is formed in the short side direction at the central portion of the lower surface between the convex portions 2a. For this reason, the unit weight 2 placed in the four-sided frame is provided with a rectangular parallelepiped gap at the center of the boundary of each unit weight 2.

次に、四方枠内に載置されている複数の単位おもり２の１つの単位おもり２ｃに、上方に凸状を呈する反りが生じた場合について説明する。上方に凸状を呈する反りが生じた単位おもり２ｃは、その下面側が凹状に湾曲しているため、下面両端部に設けられた凸部２ａの外側端部２ｄと、単位おもり２ｃの下方に設けられた下枠１ａ上面とが接触する。したがって、単位おもり２ｃと下枠１ａとは２箇所で接触することとなる。また、反りの生じた単位おもり２ｃの上面には、上方に載置された単位おもり２の下面両端部に設けられた凸部２ａの内側端部２ｅが接触する。したがって、単位おもり２ｃ上面の最上部２ｆは、上方の単位おもり２の下面中央部に形成された凹部内に位置し、上方に載置された単位おもり２とは接触していない。つまり、反りの生じた単位おもり２ｃとその上方に載置されている単位おもり２とは、両端部の２箇所で接触し、単位おもり２ｃ上面の最上部２ｆと上方に載置された単位おもり２との間には間隙が形成されている。 Next, a description will be given of a case where a warp having a convex shape upward occurs in one unit weight 2c of a plurality of unit weights 2 placed in the four-sided frame. The unit weight 2c having a warp that has a convex shape upward is curved in a concave shape on the lower surface side, so that it is provided on the outer end 2d of the convex portion 2a provided at both ends of the lower surface and below the unit weight 2c. The upper surface of the lower frame 1a is in contact. Therefore, the unit weight 2c and the lower frame 1a come into contact at two places. Further, the upper end of the warped unit weight 2c comes into contact with the inner end 2e of the convex portion 2a provided at both ends of the lower surface of the unit weight 2 placed above. Therefore, the uppermost part 2f on the upper surface of the unit weight 2c is located in a recess formed in the center of the lower surface of the upper unit weight 2 and is not in contact with the unit weight 2 placed above. That is, the warped unit weight 2c and the unit weight 2 placed above the unit weight 2 are in contact at two locations on both ends, and the unit weight placed above the uppermost part 2f on the upper surface of the unit weight 2c. A gap is formed between the two.

この発明の実施の形態１によれば、四方枠に載置されている複数の単位おもり２の１つの単位おもり２ｃに反りが生じた場合でも、反りの生じた単位おもり２ｃは、下方に設けられた下枠１ａ及び上方に載置された単位おもり２にそれぞれ両端部２箇所で接触しているため、この単位おもり２ｃに過大な曲げモーメントが作用することがない。したがって、単位おもり２の厚さを必要以上に厚くする必要はなく、軽量で作業性に優れる単位おもり２を得ることができる。また、反りの生じた単位おもり２ｃの下面及び上面とも２箇所で他の単位おもり２等に接触しているため、反りの生じた単位おもり２ｃの上方に載置された単位おもり２が不安定になることはなく、釣合い重りが昇降路内を昇降する際にも異音を発生する恐れはない。なお、実施の形態１では、四方枠に載置された単位おもり２の内、最も荷重の作用する最下部の単位おもり２ｃに反りが生じた場合について説明したが、どの位置の単位おもり２に反りが生じた場合においても、実施の形態１と同様に上面及び下面とも２箇所で接触することになるため、同様の効果を得ることは可能である。また、単位おもり２に下方に凸状の反りが生じた場合や、単位おもり２が実施の形態１とは上下逆向きに四方枠内に載置された場合においても、反りの生じた単位おもり２ｃは上面及び下面とも２箇所で接触するため、実施の形態１と同様の効果を得ることができる。したがって、両端部に設けられた凸部２ａとこの凸部２ａによって形成される凹部とを、単位おもり２の長手方向の一面に設け、この一面が上面又は下面となるように四方枠内に載置されることによっても、同様の効果を得ることは可能である。 According to the first embodiment of the present invention, even when one unit weight 2c of a plurality of unit weights 2 placed on the four-side frame is warped, the warped unit weight 2c is provided below. Since the lower frame 1a and the unit weight 2 placed above are in contact with each other at two ends, an excessive bending moment does not act on the unit weight 2c. Therefore, it is not necessary to increase the thickness of the unit weight 2 more than necessary, and the unit weight 2 that is lightweight and excellent in workability can be obtained. Further, the unit weight 2 placed above the warped unit weight 2c is unstable because the lower surface and the upper surface of the warped unit weight 2c are in contact with other unit weights 2 etc. at two locations. Therefore, there is no possibility of generating abnormal noise when the counterweight moves up and down in the hoistway. In the first embodiment, the case where the lowest unit weight 2c on which the load is applied among the unit weights 2 placed on the four-sided frame has been warped has been described. Even when warpage occurs, the upper surface and the lower surface come into contact with each other at two places as in the first embodiment, so that the same effect can be obtained. In addition, when the unit weight 2 is warped downward, or when the unit weight 2 is placed in the four-sided frame upside down from the first embodiment, the unit weight with the warp is generated. Since 2c contacts the upper surface and the lower surface at two locations, the same effect as in the first embodiment can be obtained. Accordingly, the convex portions 2a provided at both ends and the concave portions formed by the convex portions 2a are provided on one surface in the longitudinal direction of the unit weight 2, and are mounted in the four-sided frame so that the one surface becomes the upper surface or the lower surface. It is possible to obtain the same effect also by being placed.

実施の形態２．
図５はこの発明の実施の形態２におけるエレベータ用釣合い重りの斜視図、図６はこの発明の実施の形態２における単位おもりの斜視図、図７はこの発明の実施の形態２における単位おもりの１つに反りが生じた場合の模式図、図８は図７の反りが生じた単位おもりに作用する曲げモーメント線図である。 Embodiment 2. FIG.
5 is a perspective view of an elevator counterweight according to Embodiment 2 of the present invention, FIG. 6 is a perspective view of a unit weight according to Embodiment 2 of the present invention, and FIG. 7 is a perspective view of a unit weight according to Embodiment 2 of the present invention. FIG. 8 is a schematic diagram when a warp occurs in one, and FIG. 8 is a diagram of a bending moment acting on a unit weight in which the warp in FIG. 7 occurs.

図において、単位おもり２の下面には、長手方向両端部から所定の距離離れた位置に凸部２ｂがそれぞれ設けられており、凸部２ｂ間となるその中央部には凹部が形成されている。また、単位おもり２の下面両端部には、短手方向に渡って手掛かり３がそれぞれ設けられており、その他は実施の形態１と同様の構成となっている。 In the drawing, the lower surface of the unit weight 2 is provided with a convex portion 2b at a position away from both ends in the longitudinal direction by a predetermined distance, and a concave portion is formed at the central portion between the convex portions 2b. . Further, clues 3 are respectively provided at both end portions of the lower surface of the unit weight 2 in the short direction, and the rest has the same configuration as that of the first embodiment.

この発明の実施の形態２によれば、単位おもり２の下面には、凸部２ｂが長手方向両端部から所定の距離離れた位置にそれぞれ設けられることによってその両端部に手掛かり３が設けられているため、単位おもり２が作業台や床面等に載置されている状態であっても両端部には空間が形成されている。このため、この手掛かり３に手を掛けて据付及び運搬を行うことでき、作業性が向上する。また、単位おもり２下面の長手方向両端部にそれぞれ凸部２ｂが設けられることによって、その中央部には凹部が形成されているため、実施の形態１と同様に単位おもり２に反りが生じた場合でも、過大な曲げモーメントが作用することがなく、さらに釣合い重りが昇降する際にも異音を発生させる恐れがない。なお、実施の形態２では、手掛かり３が単位おもり２の短手方向に渡って設けられているが、単位おもり２を持ち上げるために手を掛けることができれば問題なく、特に形状を限定するものではない。 According to the second embodiment of the present invention, on the lower surface of the unit weight 2, the clumps 3 are provided at both ends by providing the convex portions 2b at positions separated from the both ends in the longitudinal direction by a predetermined distance. Therefore, even when the unit weight 2 is placed on a work table, a floor surface, or the like, spaces are formed at both ends. For this reason, this clue 3 can be put in and installed and transported, and workability is improved. Moreover, since the convex part 2b is provided in the longitudinal direction both ends of the unit weight 2 and the concave part is formed in the central part, the unit weight 2 is warped as in the first embodiment. Even in such a case, an excessive bending moment does not act, and there is no possibility of generating abnormal noise when the counterweight is raised or lowered. In the second embodiment, the clue 3 is provided across the short direction of the unit weight 2, but there is no problem as long as the hand can be put on to lift the unit weight 2, and the shape is not particularly limited. Absent.

この発明の実施の形態１におけるエレベータ用釣合い重りの斜視図である。It is a perspective view of the counterweight for elevators in Embodiment 1 of this invention. この発明の実施の形態１における単位おもりの斜視図である。It is a perspective view of the unit weight in Embodiment 1 of this invention. この発明の実施の形態１における単位おもりの１つに反りが生じた場合の模式図である。It is a schematic diagram when the curvature arises in one of the unit weights in Embodiment 1 of this invention. 図３の反りが生じた単位おもりに作用する曲げモーメント線図である。FIG. 4 is a diagram of a bending moment acting on a unit weight in which the warp in FIG. 3 has occurred. この発明の実施の形態２におけるエレベータ用釣合い重りの斜視図である。It is a perspective view of the counterweight for elevators in Embodiment 2 of this invention. この発明の実施の形態２における単位おもりの斜視図である。It is a perspective view of the unit weight in Embodiment 2 of this invention. この発明の実施の形態２における単位おもりの１つに反りが生じた場合の模式図である。It is a schematic diagram when the curvature arises in one of the unit weights in Embodiment 2 of this invention. 図７の反りが生じた単位おもりに作用する曲げモーメント線図である。FIG. 8 is a diagram of a bending moment acting on a unit weight in which the warp in FIG. 7 has occurred. 従来の単位おもりの１つに反りが生じた場合の模式図である。It is a schematic diagram when the curvature generate | occur | produces in one of the conventional unit weights. 図９の反りが生じた単位おもりに作用する曲げモーメント線図である。FIG. 10 is a diagram of a bending moment acting on a unit weight in which the warp in FIG. 9 has occurred.

Explanation of symbols

１側枠
１ａ下枠
２、２ｃ単位おもり
２ａ、２ｂ凸部
２ｄ外側端部
２ｅ内側端部
２ｆ最上部
３手掛かり 1 Side frame 1a Lower frame 2, 2c Unit weight 2a, 2b Convex part 2d Outer end part 2e Inner end part 2f Top part 3 Clue

Claims

A unit weight of a counterweight for an elevator, wherein convex portions are provided at both ends of one surface in the longitudinal direction so that concave portions are formed between the convex portions.

Two side frames erected with a predetermined interval, and both end portions engage with the side frame, and convex portions are provided on both end portions of one surface in the longitudinal direction, thereby providing a concave portion between the convex portions. A balance weight for an elevator, characterized by comprising a unit weight formed.

The unit weight or elevator counterweight according to claim 1, wherein the unit weight has a rectangular parallelepiped shape, and the convex portion is provided on a lower surface of the unit weight.

The unit weight or the counterweight for an elevator according to any one of claims 1 to 3, wherein the convex portion is provided at a position separated from the both ends in the longitudinal direction by a predetermined distance.

The unit weight or elevator counterweight according to any one of claims 1 to 4, wherein the unit weight is provided with a clue at both ends of the lower surface.