JP6106554B2 - Vibration control device and passenger conveyor - Google Patents
Vibration control device and passenger conveyor Download PDFInfo
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- JP6106554B2 JP6106554B2 JP2013158429A JP2013158429A JP6106554B2 JP 6106554 B2 JP6106554 B2 JP 6106554B2 JP 2013158429 A JP2013158429 A JP 2013158429A JP 2013158429 A JP2013158429 A JP 2013158429A JP 6106554 B2 JP6106554 B2 JP 6106554B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
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- Combustion & Propulsion (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Escalators And Moving Walkways (AREA)
- Vibration Prevention Devices (AREA)
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Description
本発明は、棒部材を結合して構成される骨組構造物を制振する制振装置およびそれを用いた乗客コンベアに関する。 The present invention relates to a vibration damping device that dampens a frame structure configured by connecting rod members, and a passenger conveyor using the vibration damping device.
骨組構造物の制振装置として、例えば特許文献１に開示されるように、互いに平行な２本の梁、ならびに、これらと直交する２本の柱で構成される矩形の骨組構造物に対して、矩形の２組の対角を連結するブレースにより、２組のブレースの交点に配置された減衰要素である相対的回動自在な摩擦ダンパーを駆動するものが開示されている。 As a vibration damping device for a frame structure, for example, as disclosed in Patent Document 1, a rectangular frame structure composed of two beams parallel to each other and two columns orthogonal to these beams. In addition, there is disclosed a structure that drives a relatively rotatable friction damper, which is a damping element disposed at an intersection of two sets of braces, by braces that connect two sets of diagonals of a rectangle.
また、特許文献２、特許文献３では、矩形の骨組構造物の１組の対角上に配置したブレースに、てこを利用して変形量を拡大する機構を設けている。 Moreover, in patent document 2 and patent document 3, the mechanism which expands a deformation amount using a lever is provided in the brace arrange | positioned on the diagonal of 1 set of a rectangular frame structure.
しかしながら、特許文献１に記載の制振装置の場合、ビルなどのように２本の梁が平行を保ったままその長手方向に相対変位する、所謂、層間変位が生じた場合に機能を発揮することを前提としており、２組の対角を連結するブレースのうち一方が引張荷重を、他方が圧縮荷重を受けた時、減衰要素が回動駆動される構造となっている。 However, in the case of the vibration damping device described in Patent Document 1, the function is exhibited when a so-called interlayer displacement occurs in which the two beams are relatively displaced in the longitudinal direction while being kept parallel like a building. As a premise, when one of the braces connecting two pairs of diagonals receives a tensile load and the other receives a compressive load, the damping element is rotationally driven.
したがって、特許文献１に記載の構造では、乗客コンベアや橋梁のように、層間変位ではなく、上弦材に圧縮荷重が作用し、下弦材に引張荷重が作用するような曲げ変形が生じる骨組構造物に対しては適用することができない。 Therefore, in the structure described in Patent Document 1, a frame structure such as a passenger conveyor or a bridge that undergoes a bending deformation in which a compressive load acts on the upper chord material and a tensile load acts on the lower chord material, not an interlayer displacement. It cannot be applied to.
また、骨組構造物の曲げ変形の場合は、骨組構造物を構成する上弦材、下弦材、縦部材、斜め部材、ブレースの変形量は、特許文献１のような層間変位を起こす場合の変形量と比べて小さいので、曲げ変形が生じる骨組構造物に対する制振装置では、減衰要素を十分な大きさだけ駆動するためにはブレースの変形量を拡大して減衰要素に伝える機構が必要となる。 Further, in the case of bending deformation of the frame structure, the deformation amount of the upper chord material, the lower chord material, the vertical member, the diagonal member, and the brace constituting the frame structure is the deformation amount when the interlayer displacement is caused as in Patent Document 1. Therefore, in order to drive the damping element by a sufficient size, a mechanism for expanding the amount of deformation of the brace and transmitting it to the damping element is required.
そこで、特許文献２、３では、変形量を拡大する機構を設けている。 Therefore, in Patent Documents 2 and 3, a mechanism for enlarging the deformation amount is provided.
ここで、例えば特許文献２の図２では、第一の回転部材（左側の回転部材）が第一のブレース（上側のブレース）の先端（第一の支持点）と第二のブレース（下側のブレース）の途中の箇所（第二の支持点）に回転可能に支持され、第二の回転部材（右側の回転部材）が第一のブレースの途中の箇所（第三の支持点）と第二のブレースの先端（第四の支持点）に回転可能に支持され、第一の回転部材と第二の回転部材との間に粘弾性体による減衰要素が接着されている。そして、第一、第二のブレースが互いに引っ張られる方向に動いた場合、特許文献２の図２（ｂ）のように第一、第二の回転部材は時計回りに回転し、減衰要素がせん断変形して振動エネルギーを吸収して振動を制振する。このとき、減衰要素で生じる荷重が第一、第二の回転部材を介して第一、第二のブレースに作用し、第一のブレースには、先端（第一の支持点）では下方向に、途中の箇所（第三の支持点）では上方向に力が加わる。このため、第一のブレースの第一の支持点と第三の支持点に対して、ブレースの軸方向と直交する方向に互いに逆方向に力が作用して、第一のブレースの２箇所の支持点（第一の支持点と第三の支持点）の間の場所にモーメントが発生する。第二のブレースについても、同様にして、第二の支持点と第四の支持点の間の場所にモーメントが発生する。そのため、特許文献２では、本来は軸方向荷重を受けるブレースがこのモーメントにも耐えられるように強度を向上させる必要があった。 Here, for example, in FIG. 2 of Patent Document 2, the first rotating member (the left rotating member) is the tip (first supporting point) of the first brace (upper brace) and the second brace (lower side). Of the first brace is rotatably supported at a position in the middle of the first brace (second support point), and the second rotation member (the right rotation member) is connected to the position in the middle of the first brace (third support point). The tip of the second brace (fourth support point) is rotatably supported, and a damping element made of a viscoelastic body is bonded between the first rotating member and the second rotating member. When the first and second braces move in the direction in which they are pulled together, the first and second rotating members rotate clockwise as shown in FIG. 2B of Patent Document 2, and the damping element shears. Deforms and absorbs vibration energy to suppress vibration. At this time, the load generated by the damping element acts on the first and second braces via the first and second rotating members, and the first brace has a downward direction at the tip (first support point). In addition, a force is applied in an upward direction at a halfway point (third support point). For this reason, the force acts in the opposite direction to the first support point and the third support point of the first brace in the direction orthogonal to the axial direction of the brace, and A moment is generated at a location between the support points (the first support point and the third support point). Similarly, a moment is generated at the place between the second support point and the fourth support point for the second brace. Therefore, in Patent Document 2, it was originally necessary to improve the strength so that the brace receiving the axial load can withstand this moment.
また、例えば特許文献３の図２、図３では、第一の揺動部材（下側の揺動部材）が第一のブレース（左側のブレース）の先端（第一の支持点）と第二のブレース（右側のブレース）の途中の箇所（第二の支持点）に回転可能に支持され、第二の揺動部材（上側の揺動部材）が第一のブレースの途中の箇所（第三の支持点）と第二のブレースの先端（第四の支持点）に回転可能に支持され、振り子部材が第一のブレースの第一の支持点と第三の支持点との間の箇所（第五の支持点）と第二のブレースの第二の支持点と第四の支持点との間の箇所（第六の支持点）とに回転可能に支持され、振り子部材の一端（下側の端部）と第一の揺動部材との間に粘弾性体による第一の減衰要素が設けられ、振り子部材の他端（上側の端部）と第二の揺動部材との間に粘弾性体による第二の減衰要素が設けられている。そして、第一、第二のブレースが互いに引っ張られる方向に動いた場合、特許文献３の図３のように振り子部材は時計回りに回転し、第一、第二の減衰要素がせん断変形して振動エネルギーを吸収して振動を制振する。このとき、第一、第二の減衰要素で生じる荷重が第一、第二の揺動部材を介して第一、第二のブレースに作用し、第一のブレースには、先端（第一の支持点）では左方向に、途中の箇所（第三の支持点）では右方向に力が加わる。このため、第一のブレースの第一の支持点と第三の支持点に対して、ブレースの軸方向と直交する方向に互いに逆方向に力が作用して、第一のブレースの２箇所の支持点（第一の支持点と第三の支持点）の間の場所にモーメントが発生する。第二のブレースについても、同様にして、途中の箇所（第二の支持点）では左方向に、先端（第四の支持点）では右方向に力が加わり、第二の支持点と第四の支持点の間の場所にモーメントが発生する。そのため、特許文献３でも、特許文献２と同様に、本来は軸方向荷重を受けるブレースがこのモーメントにも耐えられるように強度を向上させる必要があった。 Further, for example, in FIGS. 2 and 3 of Patent Document 3, the first swing member (lower swing member) is the tip (first support point) of the first brace (left brace) and the second. In the middle of the brace (right brace) (second support point) is rotatably supported, and the second swing member (upper swing member) is in the middle of the first brace (third Support point) and the tip of the second brace (fourth support point) are rotatably supported, and the pendulum member is located between the first support point and the third support point of the first brace ( A fifth support point) and a portion between the second support point and the fourth support point of the second brace (sixth support point). Between the other end (upper end) of the pendulum member and the second swinging member. Second damping element according viscoelastic body is provided between the. When the first and second braces move in the direction in which they are pulled together, the pendulum member rotates clockwise as shown in FIG. 3 of Patent Document 3, and the first and second damping elements undergo shear deformation. Absorbs vibration energy and suppresses vibration. At this time, the load generated by the first and second damping elements acts on the first and second braces via the first and second swinging members, and the first brace has a tip (first The force is applied to the left in the support point) and to the right in the middle (the third support point). For this reason, the force acts in the opposite direction to the first support point and the third support point of the first brace in the direction orthogonal to the axial direction of the brace, and A moment is generated at a location between the support points (the first support point and the third support point). Similarly, for the second brace, a force is applied in the left direction at the midpoint (second support point) and in the right direction at the tip (fourth support point). A moment is generated at a location between the support points. Therefore, in Patent Document 3, as in Patent Document 2, it was originally necessary to improve the strength so that the brace receiving the axial load can withstand this moment.
本発明は、曲げ変形が生じる骨組構造物の制振装置において、ブレースの変形量を拡大して減衰要素に伝える際に、ブレースにモーメントを作用させないことで、ブレースの小型軽量化が可能な骨組構造物の制振装置とそれを用いた乗客コンベアを提供するものである。 The present invention relates to a vibration control device for a frame structure in which bending deformation is caused, and when the amount of deformation of the brace is expanded and transmitted to the damping element, the frame can be reduced in size and weight by not applying a moment to the brace. The present invention provides a vibration damping device for a structure and a passenger conveyor using the vibration damping device.
本発明の制振装置は、支点間に架けられる上弦材および下弦材と、前記上弦材と前記下弦材とを縦方向に接続する接続部材とを有する骨組構造物を制振する制振装置において、前記上弦材と前記下弦材とのうちの一方と前記接続部材との交差部を第一交差部とし、前記骨組構造物の長手方向において前記第一交差部とは異なる位置であって、前記上弦材と前記下弦材とのうちの他方と前記接続部材との交差部を第二交差部としたとき、一端が前記第一交差部に回転可能に支持され、他端に回転可能な第一の支点を有する第一棒部材と、一端が前記第二交差部に回転可能に支持され、他端に回転可能な第二の支点を有する第二棒部材と、前記第一の支点と前記第二の支点とで回転可能に支持された回転部材と、前記第一交差部に配置されているとともに、前記回転部材と接続され、前記回転部材によって変形させられる減衰要素とを有し、前記上弦材には圧縮荷重が作用し、前記下弦材には引張荷重が作用し、前記第一の支点から前記減衰要素までの距離の方が前記第一の支点から前記第二の支点までの距離よりも長いことを特徴とする。 The vibration damping device of the present invention is a vibration damping device for damping a frame structure having an upper chord member and a lower chord member spanned between fulcrums, and a connecting member that connects the upper chord member and the lower chord member in a vertical direction. A crossing portion between one of the upper chord material and the lower chord material and the connection member is a first crossing portion, and is a position different from the first crossing portion in the longitudinal direction of the framework structure, When the intersection of the other of the upper chord material and the lower chord material and the connection member is a second intersection, one end is rotatably supported by the first intersection and the first is rotatable at the other end. A first bar member having one fulcrum, a second bar member having one end rotatably supported at the second intersection and a second fulcrum rotatable at the other end, the first fulcrum and the first A rotating member rotatably supported by two fulcrums and disposed at the first intersection Both of which have a damping element connected to the rotating member and deformed by the rotating member, a compressive load acting on the upper chord material, a tensile load acting on the lower chord material, and the first fulcrum The distance from the damping element to the damping element is longer than the distance from the first fulcrum to the second fulcrum.
そして、本発明の乗客コンベアは、上記制振装置を有し、主枠として一対の前記骨組構造物を有することを特徴とする。 And the passenger conveyor of this invention has the said damping device, and has a pair of said frame structure as a main frame, It is characterized by the above-mentioned.
本発明の制振装置では、曲げ変形が生じる骨組構造物の制振装置において、ブレースの変形量を拡大して減衰要素に伝える際に、回転部材によって変形させられる減衰要素を第一交差部に配置することで、ブレースに相当する第一棒部材、第二棒部材とも他部材との接続は両端における回転支持だけなので、第一棒部材、第二棒部材にはモーメントが作用せず、これらの部材の小型軽量化が可能となる。 According to the vibration damping device of the present invention, in the vibration damping device for a frame structure in which bending deformation occurs, when the amount of deformation of the brace is expanded and transmitted to the damping element, the damping element deformed by the rotating member is provided at the first intersection. By arranging the first rod member and the second rod member corresponding to the brace, the connection with the other members is only rotational support at both ends, so the moment does not act on the first rod member and the second rod member. The member can be reduced in size and weight.
本発明の実施例を、図面を参照しながら説明する。尚、各図および各実施例において、同一又は類似の構成要素には同じ符号を付し、説明を省略する。 Embodiments of the present invention will be described with reference to the drawings. In each drawing and each embodiment, the same or similar components are denoted by the same reference numerals, and description thereof is omitted.
図１は本発明の制振装置の一実施例であり、本発明の制振装置が骨組構造物に設置された状態を示している。骨組構造物は、主に圧縮荷重を受ける上弦材１、主に引張荷重を受ける下弦材２、上弦材１と下弦材２を縦方向に連結して接続する接続部材である縦棒部材３、４、ならびに、斜め方向に連結して接続する斜め棒部材５で構成されている。骨組構造物は、上弦材および下弦材が支点間に架けられ、曲げ変形が生じる。 FIG. 1 shows an embodiment of the vibration damping device of the present invention, and shows a state where the vibration damping device of the present invention is installed in a frame structure. The frame structure includes an upper chord member 1 that mainly receives a compressive load, a lower chord member 2 that mainly receives a tensile load, and a vertical bar member 3 that is a connecting member that connects the upper chord member 1 and the lower chord member 2 in a longitudinal direction. 4 and an oblique bar member 5 connected and connected in an oblique direction. In the frame structure, an upper chord material and a lower chord material are bridged between fulcrums, and bending deformation occurs.
ここで、上弦材１と縦棒部材３とが交差する部位を第一交差部１１、下弦材２と縦棒部材４とが交差する部位を第二交差部１２と呼ぶこととする。本実施例の制振装置は、第一棒部材２１、第二棒部材２２、回転部材２３、減衰要素２４とを有する。第一棒部材２１は一端が第一支点３１によって第一交差部１１に回転可能に支持されるとともに他端が第二支点３２によって回転部材２３を回転可能に支持している。第二棒部材２２は一端が第四支点３４によって第二交差部１２に回転可能に支持されるとともに他端が第三支点３３によって回転部材２３を回転可能に支持している。減衰要素２４は回転部材２３と第一交差部１１に固定され、第一交差部１１に配置されているとともに、回転部材２３と接続され、回転部材２３によって変形させられる。減衰要素２４は制振ゴムのような粘弾性体であることが好ましい。そして、第二支点３２と第三支点３３との距離Ｄ１は実現可能な範囲で小さく、距離Ｄ１に対して第二支点３２から減衰要素２４までの距離Ｄ２の方が長くなっており、第二支点３２と第三支点３３を通る直線は第一交差部１１と第二交差部１２を通る直線と略直交している。 Here, a portion where the upper chord member 1 and the vertical bar member 3 intersect is referred to as a first intersecting portion 11, and a portion where the lower chord member 2 and the vertical bar member 4 intersect is referred to as a second intersecting portion 12. The vibration damping device of the present embodiment includes a first rod member 21, a second rod member 22, a rotating member 23, and a damping element 24. One end of the first rod member 21 is rotatably supported on the first intersection 11 by the first fulcrum 31 and the other end rotatably supports the rotating member 23 by the second fulcrum 32. One end of the second rod member 22 is rotatably supported by the second intersection portion 12 by the fourth fulcrum 34 and the other end rotatably supports the rotating member 23 by the third fulcrum 33. The damping element 24 is fixed to the rotating member 23 and the first intersecting portion 11, is disposed at the first intersecting portion 11, is connected to the rotating member 23, and is deformed by the rotating member 23. The damping element 24 is preferably a viscoelastic body such as a damping rubber. The distance D1 between the second fulcrum 32 and the third fulcrum 33 is small within the feasible range, and the distance D2 from the second fulcrum 32 to the damping element 24 is longer than the distance D1. A straight line passing through the fulcrum 32 and the third fulcrum 33 is substantially orthogonal to a straight line passing through the first intersection 11 and the second intersection 12.
骨組構造物の一例であるエスカレータの主枠に本実施例の制振装置を設置した例を図２に示す。尚、ここでは乗客コンベアの一例としてエスカレータを示したが、動く歩道など他の型式の乗客コンベアに適用しても良い。図６はエスカレータの主枠の断面図であり、エスカレータの主枠５０は左右一対の側枠体４１とこれらを連結する横桁４８、４９を有しており、主枠の長手方向両端に位置する受梁４２、４３で建築物に設置されている。側枠体４１は受梁４２、４３の間に配置される上弦材４４（上弦材１に相当する）、下弦材４５（下弦材２に相当する）、上弦材４４と下弦材４５を連結する複数の縦材４６（縦棒部材３、４に相当する）、斜材４７（斜め棒部材５に相当する）を有している。そして、本実施例の制振装置５１（図１で説明した制振装置と同様の構造を有する）は上弦材４４、下弦材４５、縦材４６で囲まれる矩形領域の対角線のうち斜材４７の無い側に配置されている。 The example which installed the damping device of the present Example in the main frame of the escalator which is an example of a frame structure is shown in FIG. In addition, although the escalator was shown as an example of a passenger conveyor here, you may apply to other types of passenger conveyors, such as a moving sidewalk. FIG. 6 is a cross-sectional view of the main frame of the escalator. The main frame 50 of the escalator has a pair of left and right side frames 41 and cross beams 48 and 49 connecting them, and is positioned at both ends in the longitudinal direction of the main frame. It is installed in the building by receiving beams 42 and 43. The side frame 41 connects the upper chord member 44 (corresponding to the upper chord member 1), the lower chord member 45 (corresponding to the lower chord member 2), the upper chord member 44 and the lower chord member 45 disposed between the receiving beams 42 and 43. A plurality of vertical members 46 (corresponding to the vertical bar members 3 and 4) and diagonal members 47 (corresponding to the diagonal bar members 5) are provided. The vibration damping device 51 of this embodiment (having the same structure as that of the vibration damping device described in FIG. 1) is an oblique material 47 among diagonal lines in a rectangular region surrounded by the upper chord member 44, the lower chord member 45, and the vertical member 46. It is arranged on the side without.
尚、図２に示すように、骨組構造物には、上弦材４４と下弦材４５と接続部材である縦材４６とで構成される矩形領域が複数存在しており、第一棒部材２１、第二棒部材２２、および、回転部材２３で構成されたリンク機構と減衰要素２４とが配置された矩形領域が複数存在している。但し、全ての矩形領域に制振装置であるリンク機構および減衰要素２４を配置する必要はない。 As shown in FIG. 2, the framework structure includes a plurality of rectangular regions composed of the upper chord member 44, the lower chord member 45, and the vertical member 46 that is the connecting member, and the first rod member 21, There are a plurality of rectangular regions in which the link mechanism constituted by the second rod member 22 and the rotating member 23 and the damping element 24 are arranged. However, it is not necessary to arrange the link mechanism and the damping element 24 which are vibration control devices in all rectangular regions.
尚、図２では主枠を構成する一対の側枠体４１の一方を示しているが、主枠の長手方向軸周りのねじれを防止するために、他方の主枠体４１についても対応する同一箇所に制振装置５１が設けられていることが望ましい。すなわち、主枠を構成する一対の骨組構造物は、複数の矩形領域が存在する場合、それぞれ、骨組構造物の長手方向の同一箇所に制振装置が設けられていることが望ましい。 In FIG. 2, one of the pair of side frames 41 constituting the main frame is shown, but the other main frame 41 is also identical in order to prevent torsion around the longitudinal axis of the main frame. It is desirable that a vibration damping device 51 is provided at the location. That is, when a plurality of rectangular regions exist in the pair of frame structures constituting the main frame, it is desirable that a vibration damping device is provided in the same position in the longitudinal direction of each frame structure.
エスカレータが設置された建築物の周囲を走行する車や鉄道などの走行振動に起因してエスカレータが振動する場合、上弦材４４と下弦材４５との間隔と比較して受梁４２、４３の間隔が十分に広いため、主枠の変形モードで支配的なのは上下方向の１次曲げ変形モードである。このとき、制振装置が取り付けられている矩形領域の対角線の距離変化（第一交差部と第二交差部との距離変化）は、鋼製である上弦材４４、あるいは、下弦材４５の伸縮によって生じるため、減衰要素２４が機能するのに必要な変位量と比較して非常に小さい。 When the escalator vibrates due to traveling vibration of a car or a railroad that travels around the building where the escalator is installed, the distance between the receiving beams 42 and 43 compared to the distance between the upper chord material 44 and the lower chord material 45 Is sufficiently wide, the primary bending deformation mode in the vertical direction is dominant in the deformation mode of the main frame. At this time, the diagonal distance change (distance change between the first intersecting portion and the second intersecting portion) of the rectangular region to which the vibration damping device is attached is the expansion and contraction of the upper chord member 44 or the lower chord member 45 made of steel. Is very small compared to the amount of displacement necessary for the damping element 24 to function.
図３は、本実施例の制振装置を設置した骨組構造物が変形した状態を示す図である。側枠体４１の中の１つの矩形領域の変形を拡大表示すると、図３に示すように、第一交差部１１と第二交差部１２の間隔が変化している。この間隔変動Ａは距離Ｄ１に対して小さいため、第一棒部材２１、第二棒部材２２の向きはこの間隔変動による影響をほぼ受けることなく、第一交差部１１と第二交差部１２を通る直線と略平行を保つ。結果として式（１）で算出される角度θだけ回転部材２３が回転する。
θ＝tan-1（Ａ／Ｄ１） ・・・（１）
FIG. 3 is a diagram illustrating a state where the frame structure in which the vibration damping device of the present embodiment is installed is deformed. When the deformation of one rectangular region in the side frame 41 is enlarged and displayed, the interval between the first intersecting portion 11 and the second intersecting portion 12 is changed as shown in FIG. Since the distance variation A is small with respect to the distance D1, the directions of the first rod member 21 and the second rod member 22 are not substantially affected by the distance variation, and the first intersection portion 11 and the second intersection portion 12 are not affected. Keep almost parallel to the straight line. As a result, the rotating member 23 rotates by the angle θ calculated by the equation (1).
θ = tan −1 (A / D1) (1)
したがって、減衰要素２４は式（２）で表される変形量Ｂだけ強制変位させられ、この変位、あるいは、この変位の微分量である速度に応じた減衰力を生じさせる。そして、Ｄ１＜Ｄ２としているため、Ａ＜Ｂと変位量が拡大され、十分な減衰力を生じさせることができる。
Ｂ＝Ｄ２sinθ ・・・（２）
Accordingly, the damping element 24 is forcibly displaced by the deformation amount B expressed by the equation (2), and a damping force corresponding to the displacement or the speed that is the differential amount of the displacement is generated. Since D1 <D2, A <B and the amount of displacement are increased, and a sufficient damping force can be generated.
B = D2sinθ (2)
本実施例の制振装置によれば、曲げ変形が生じる骨組構造物の制振装置において、ブレースの変形量を拡大して減衰要素に伝える際に、回転部材によって変形させられる減衰要素を第一交差部に配置することで、ブレースに相当する第一棒部材、第二棒部材とも他部材との接続は両端における回転支持だけなので、第一棒部材、第二棒部材にはモーメントが作用せず、これらの部材の小型軽量化が可能となる。また、減衰要素を第一交差部の近傍に固定したため、上弦材と縦棒部材にもモーメントが作用せず、制振装置を付加するためにこれらの部材を大型化する必要はない。 According to the vibration damping device of the present embodiment, in the vibration damping device for a frame structure in which bending deformation occurs, the damping element that is deformed by the rotating member when the amount of brace deformation is expanded and transmitted to the damping element is the first. By arranging them at the intersection, the first and second rod members corresponding to the brace are connected to the other members only by rotation support at both ends, so a moment acts on the first and second rod members. Therefore, it is possible to reduce the size and weight of these members. Further, since the damping element is fixed in the vicinity of the first intersecting portion, no moment acts on the upper chord member and the vertical bar member, and it is not necessary to increase the size of these members in order to add a vibration damping device.
尚、図２では、上弦材４４、下弦材４５、縦材４６で囲まれる矩形領域の一部に複数の制振装置５１を配置した例を示したが、１台の制振装置５１を小型化して減衰力を側枠体全体で分散させるために、全ての矩形領域に制振装置５１を設置しても良い。 2 shows an example in which a plurality of vibration control devices 51 are arranged in a part of a rectangular region surrounded by the upper chord member 44, the lower chord member 45, and the vertical member 46. However, one vibration control device 51 is reduced in size. In order to disperse the damping force over the entire side frame, the damping device 51 may be installed in all rectangular areas.
あるいは、制振装置５１の台数を減らして設置を容易にする場合は、第一交差部１１と第二交差部１２の間隔変動が大きくなる矩形領域のみに制振装置５１を設置してもよい。 Or when reducing the number of the damping devices 51 and making installation easy, you may install the damping device 51 only in the rectangular area where the space | interval fluctuation | variation of the 1st crossing part 11 and the 2nd crossing part 12 becomes large. .
図４はせん断変形によって減衰力を発揮する減衰要素の一実施例である。第一交差部１１、回転部材２３とも、回転部材２３の回転面と平行な面を有しており、これらの面に減衰要素２４が固定されている。すなわち、第一交差部１１は回転部材２３の回転する平面に平行な第一の平面を有し、回転部材２３は第一の平面に平行な第二の平面を有し、第一の平面と第二の平面との間に減衰要素２４である粘弾性体が設けられ、粘弾性体のせん断変形によって制振する。減衰要素２４は制振ゴムのような粘弾性体であることが好ましい。この構造は制振ゴムを十分に変形させることが容易であり、同一の制振ゴムでも大きな減衰力を得ることが可能となる。 FIG. 4 shows an embodiment of a damping element that exhibits a damping force by shear deformation. Both the first intersecting portion 11 and the rotating member 23 have surfaces parallel to the rotating surface of the rotating member 23, and the attenuation element 24 is fixed to these surfaces. That is, the first intersection 11 has a first plane parallel to the plane of rotation of the rotating member 23, and the rotating member 23 has a second plane parallel to the first plane, A viscoelastic body, which is the damping element 24, is provided between the second plane and the vibration is suppressed by shear deformation of the viscoelastic body. The damping element 24 is preferably a viscoelastic body such as a damping rubber. With this structure, it is easy to sufficiently deform the damping rubber, and a large damping force can be obtained even with the same damping rubber.
図５は圧縮変形によって減衰力を発揮する減衰要素の一実施例である。第一交差部１１は回転部材２３の回転面に垂直、かつ、互いに平行な２つの平面３５、３６を有している。回転部材２３は平面３５、３６と対向する２つの平面を有している。これらの２対の対向する平面の間に減衰要素２４が挟まれている。すなわち、第一交差部１１は回転部材２３の回転する平面に垂直な第一の平面３５、３６を有し、回転部材２３は第一の平面に平行な第二の平面を有し、第一の平面３５、３６と第二の平面との間に減衰要素２４である粘弾性体が設けられ、粘弾性体の圧縮変形によって制振する。この方法は減衰要素２４を第一交差部１１、回転部材２３のいずれにも強固に固定する必要がなく、制振装置５１の設置作業性が向上する。 FIG. 5 shows an embodiment of a damping element that exhibits a damping force by compressive deformation. The first intersecting portion 11 has two planes 35 and 36 that are perpendicular to the rotation surface of the rotation member 23 and parallel to each other. The rotating member 23 has two planes facing the planes 35 and 36. Attenuating element 24 is sandwiched between these two pairs of opposing planes. That is, the first intersecting portion 11 has first planes 35 and 36 perpendicular to the plane of rotation of the rotating member 23, the rotating member 23 has a second plane parallel to the first plane, The viscoelastic body that is the damping element 24 is provided between the flat surfaces 35 and 36 and the second plane, and the vibration is suppressed by compressive deformation of the viscoelastic body. This method does not require the damping element 24 to be firmly fixed to either the first intersecting portion 11 or the rotating member 23, and the installation workability of the vibration damping device 51 is improved.
以上の説明では、減衰要素２４が第一交差部１１の近傍に設置されているが、第二交差部１２の近傍に減衰要素２４を設置するように制振装置の向きを入れ換えても同様の効果が得られる。換言すれば、第一交差部と第二交差部の定義を拡張し、上弦材と下弦材とのうちの一方と縦方向の接続部材との交差部を第一交差部とし、骨組構造物の長手方向において第一交差部とは異なる位置であって、上弦材と下弦材とのうちの他方と縦方向の接続部材との交差部を第二交差部とし、第一交差部に減衰要素２４を配置すれば良い。 In the above description, the damping element 24 is installed in the vicinity of the first intersection 11, but the same is true even if the direction of the damping device is changed so that the damping element 24 is installed in the vicinity of the second intersection 12. An effect is obtained. In other words, the definition of the first intersecting portion and the second intersecting portion is expanded, and the intersecting portion between one of the upper chord material and the lower chord material and the connecting member in the vertical direction is defined as the first intersecting portion, and the framework structure It is a position different from the first intersecting portion in the longitudinal direction, and an intersecting portion between the other of the upper chord material and the lower chord material and the connecting member in the longitudinal direction is defined as a second intersecting portion, and the damping element 24 is provided at the first intersecting portion. Should be arranged.
以上、本発明の実施例を説明してきたが、これまでの各実施例で説明した構成はあくまで一例であり、本発明は、技術思想を逸脱しない範囲内で適宜変更が可能である。また、それぞれの実施例で説明した構成は、互いに矛盾しない限り、組み合わせて用いても良い。 As mentioned above, although the Example of this invention has been described, the structure demonstrated by each Example so far is an example to the last, and this invention can be suitably changed within the range which does not deviate from a technical idea. Further, the configurations described in the respective embodiments may be used in combination as long as they do not contradict each other.
１・・・骨組構造物の上弦材
２・・・骨組構造物の下弦材
３、４・・・骨組構造物の縦棒部材（接続部材）
５・・・骨組構造物の斜め棒部材
１１・・・第一交差部
１２・・・第二交差部
２１・・・第一棒部材
２２・・・第二棒部材
２３・・・回転部材
２４・・・減衰要素
３１・・・第一支点
３２・・・第二支点
３３・・・第三支点
３４・・・第四支点
４１・・・エスカレータの側枠体
４２、４３・・・エスカレータの受梁
４４・・・エスカレータの上弦材
４５・・・エスカレータの下弦材
４６・・・エスカレータの縦材
４７・・・エスカレータの斜材
５１・・・制振装置
DESCRIPTION OF SYMBOLS 1 ... Upper chord material of frame structure 2 ... Lower chord material 3, 4 of frame structure ... Vertical bar member (connection member) of frame structure
5 ... Diagonal bar member 11 of a frame structure ... 1st crossing part 12 ... 2nd crossing part 21 ... 1st bar member 22 ... 2nd bar member 23 ... rotating member 24 ... Damping element 31 ... First fulcrum 32 ... Second fulcrum 33 ... Third fulcrum 34 ... Fourth fulcrum 41 ... Escalator side frames 42, 43 ... Escalator Receiving beam 44 ... Upper chord member 45 of escalator ... Lower chord member 46 of escalator ... Vertical member 47 of escalator ... Diagonal member 51 of escalator ... Damping device
Claims (6)
前記上弦材と前記下弦材とのうちの一方と前記接続部材との交差部を第一交差部とし、
前記骨組構造物の長手方向において前記第一交差部とは異なる位置であって、前記上弦材と前記下弦材とのうちの他方と前記接続部材との交差部を第二交差部としたとき、
一端が前記第一交差部に回転可能に支持され、他端に回転可能な第一の支点を有する第一棒部材と、
一端が前記第二交差部に回転可能に支持され、他端に回転可能な第二の支点を有する第二棒部材と、
前記第一の支点と前記第二の支点とで回転可能に支持された回転部材と、
前記第一交差部に配置されているとともに、前記回転部材と接続され、前記回転部材によって変形させられる減衰要素とを有し、
前記上弦材には圧縮荷重が作用し、
前記下弦材には引張荷重が作用し、
前記第一の支点から前記減衰要素までの距離の方が前記第一の支点から前記第二の支点までの距離よりも長く、
前記第一交差部は前記回転部材の回転する平面に平行な第一の平面を有し、前記回転部材は前記第一の平面に平行な第二の平面を有し、前記第一の平面と前記第二の平面との間に前記減衰要素が設けられ、前記減衰要素のせん断変形によって制振することを特徴とする、制振装置。 In a vibration damping device for damping a frame structure having an upper chord member and a lower chord member spanned between fulcrums, and a connecting member for connecting the upper chord member and the lower chord member in a vertical direction,
A crossing portion of one of the upper chord material and the lower chord material and the connection member is a first crossing portion,
When the crossing portion of the connecting member and the other of the upper chord material and the lower chord material is a second crossing portion at a position different from the first crossing portion in the longitudinal direction of the framework structure,
A first rod member having one end supported rotatably at the first intersection and a first fulcrum rotatable at the other end;
A second bar member having one end supported rotatably at the second intersection and a second fulcrum rotatable at the other end;
A rotating member rotatably supported by the first fulcrum and the second fulcrum;
A damping element disposed at the first intersection and connected to the rotating member and deformed by the rotating member;
A compression load acts on the upper chord material,
A tensile load acts on the lower chord material,
Rather long than the distance from the first fulcrum toward the distance from the first fulcrum to the damping element to the second fulcrum,
The first intersection has a first plane parallel to the plane of rotation of the rotating member, the rotating member has a second plane parallel to the first plane, and the first plane The damping device is characterized in that the damping element is provided between the second plane and the damping is performed by shear deformation of the damping element .
前記上弦材と前記下弦材とのうちの一方と前記接続部材との交差部を第一交差部とし、 A crossing portion of one of the upper chord material and the lower chord material and the connection member is a first crossing portion,
前記骨組構造物の長手方向において前記第一交差部とは異なる位置であって、前記上弦材と前記下弦材とのうちの他方と前記接続部材との交差部を第二交差部としたとき、When the crossing portion of the connecting member and the other of the upper chord material and the lower chord material is a second crossing portion at a position different from the first crossing portion in the longitudinal direction of the framework structure,
一端が前記第一交差部に回転可能に支持され、他端に回転可能な第一の支点を有する第一棒部材と、 A first rod member having one end supported rotatably at the first intersection and a first fulcrum rotatable at the other end;
一端が前記第二交差部に回転可能に支持され、他端に回転可能な第二の支点を有する第二棒部材と、 A second bar member having one end supported rotatably at the second intersection and a second fulcrum rotatable at the other end;
前記第一の支点と前記第二の支点とで回転可能に支持された回転部材と、 A rotating member rotatably supported by the first fulcrum and the second fulcrum;
前記第一交差部に配置されているとともに、前記回転部材と接続され、前記回転部材によって変形させられる減衰要素とを有し、 A damping element disposed at the first intersection and connected to the rotating member and deformed by the rotating member;
前記上弦材には圧縮荷重が作用し、 A compression load acts on the upper chord material,
前記下弦材には引張荷重が作用し、 A tensile load acts on the lower chord material,
前記第一の支点から前記減衰要素までの距離の方が前記第一の支点から前記第二の支点までの距離よりも長く、 The distance from the first fulcrum to the damping element is longer than the distance from the first fulcrum to the second fulcrum,
前記第一交差部は前記回転部材の回転する平面に垂直な第一の平面を有し、前記回転部材は前記第一の平面に平行な第二の平面を有し、前記第一の平面と前記第二の平面との間に前記減衰要素が設けられ、前記減衰要素の圧縮変形によって制振することを特徴とする制振装置。 The first intersection has a first plane perpendicular to the plane of rotation of the rotating member, the rotating member has a second plane parallel to the first plane, and the first plane A damping device, wherein the damping element is provided between the second plane and damping is performed by compressive deformation of the damping element.
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| CN85204803U (en) * | 1985-12-14 | 1987-04-15 | 航空工业部第四规划设计研究院 | Earth quake-resisting safety device using energy-dissipation cylinders with lead or tin inside |
| JPS61165037A (en) * | 1985-12-27 | 1986-07-25 | Sanwa Tekki Corp | Micro-vibration absorbing device |
| JP2717143B2 (en) * | 1988-06-20 | 1998-02-18 | 清水建設株式会社 | Vibration control method of buildings by friction |
| JP4077999B2 (en) * | 1999-09-13 | 2008-04-23 | 三菱重工業株式会社 | Damping device for vibration control |
| JP2001207677A (en) * | 2000-01-26 | 2001-08-03 | Arai Gumi Ltd | Damping construction for building |
| JP2003049556A (en) * | 2001-08-06 | 2003-02-21 | Toyo Tire & Rubber Co Ltd | Vibration control structure for building |
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| JP4614725B2 (en) * | 2004-10-01 | 2011-01-19 | 三菱電機株式会社 | Main frame structure of passenger conveyor |
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