JP5912885B2 - Anti-vibration stand - Google Patents

Anti-vibration stand Download PDF

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JP5912885B2
JP5912885B2 JP2012129105A JP2012129105A JP5912885B2 JP 5912885 B2 JP5912885 B2 JP 5912885B2 JP 2012129105 A JP2012129105 A JP 2012129105A JP 2012129105 A JP2012129105 A JP 2012129105A JP 5912885 B2 JP5912885 B2 JP 5912885B2
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frame
pump
vibration
gantry
additional mass
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JP2013253641A (en
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典孝 村上
典孝 村上
山本　哲
哲 山本
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Kurashiki Kako Co Ltd
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Kurashiki Kako Co Ltd
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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
    • F16F15/085—Use of both rubber and metal springs
    • 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
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/0052—Physically guiding or influencing
    • F16F2230/007—Physically guiding or influencing with, or used as an end stop or buffer; Limiting excessive axial separation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Vibration Prevention Devices (AREA)

Description

本発明は、防振架台に関し、特に、ポンプ等の機器が載置固定される防振架台であって、該機器のドレン水を受けるドレンパンを備えるものに関する。   The present invention relates to a vibration isolator, and more particularly, to a vibration isolator on which equipment such as a pump is placed and fixed, which includes a drain pan that receives drain water of the equipment.

従来より、ポンプが載置固定されるポンプ用防振架台であって、ポンプのドレン水を受けるドレンパンを備えるものがある（例えば特許文献１参照）。一方、防振架台において、機器の振動変位を小さくするために付加質量体を設ける場合がある（例えば特許文献２参照）。これまでに付加質量体が設けられた種々のポンプ用防振架台が開発されており、その１つに、上方に開口する凹部が形成された箱型の上架台と、その下方に配置された下架台と、両架台間に介設された防振装置とを備え、上記凹部内に付加質量体であるコンクリートが配設され、このコンクリートをドレンパンで覆うものがある。   Conventionally, there is an anti-vibration stand for a pump on which a pump is placed and fixed, and includes a drain pan that receives drain water of the pump (see, for example, Patent Document 1). On the other hand, in an anti-vibration mount, an additional mass body may be provided in order to reduce the vibration displacement of the device (see, for example, Patent Document 2). Various types of anti-vibration mounts for pumps with additional mass bodies have been developed so far, one of which is a box-type upper mount with a recess opening upward, and the lower one is arranged below There is a lower pedestal and an anti-vibration device interposed between both pedestals, and concrete that is an additional mass is disposed in the recess, and this concrete is covered with a drain pan.

実用新案登録第３１１４１３５号公報Utility Model Registration No. 3114135 特開２００９−２１６１５７号公報JP 2009-216157 A

しかしながら、上記防振架台では、コンクリートを上架台の凹部に流し込んで固めなければならないため、付加質量体を設けるのに手間がかかる。また、コンクリートをドレンパンで覆っているため、ドレン水があふれて外部に流出する虞がある。   However, in the vibration isolator, the concrete has to be poured into the recesses of the upper frame and hardened, so it takes time to provide the additional mass body. Moreover, since the concrete is covered with the drain pan, there is a possibility that drain water overflows and flows out.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、付加質量体の設置が容易で、ドレン水が外部に流出するのを防止することが可能な防振架台を提供することにある。   The present invention has been made in view of the above points, and the object of the present invention is to provide a vibration isolator that can easily install an additional mass body and can prevent drain water from flowing out. It is to provide.

上記の目的を達成するために、本発明は、ドレンパン及び付加質量体の各取付構造を工夫したものである。   In order to achieve the above object, the present invention devises each mounting structure of the drain pan and the additional mass body.

具体的には、本発明は、上架台と、該上架台の下方に配置された下架台と、該両架台間に介設された防振装置とを備え、機器が載置固定される防振架台を対象とし、次のような解決手段を講じた。   Specifically, the present invention includes an upper pedestal, a lower pedestal disposed below the upper pedestal, and a vibration isolator interposed between the two pedestals, and the device is mounted and fixed. The following solutions were taken for the shaking table.

第１の発明は、上記上架台は、枠状をなして、内側に枠開口を有し、上記上架台に固定され、該上架台の枠開口を下側から塞ぐドレンパンと、上記上架台の枠内に配設され、両端が該上架台に各々接合された梁部材と、上下方向から見て上記上架台との間に隙間が形成されるように上記梁部材上に設けられ、その上に上記機器が載置される付加質量体とを備えていることを特徴とするものである。   According to a first aspect of the present invention, the upper frame has a frame shape, has a frame opening on the inner side, is fixed to the upper frame, is closed to the frame opening of the upper frame from the lower side, and the upper frame is Provided on the beam member such that a gap is formed between the beam member disposed in the frame and bonded at both ends to the upper frame and the upper frame as viewed from above and below. And an additional mass body on which the device is placed.

これによれば、上架台の枠内に配設された梁部材上に付加質量体が設けられているので、付加質量体の設置時には、それを梁部材に載せるだけでよい。したがって、付加質量体の設置が容易である。また、付加質量体が上下方向から見て上架台との間に隙間が形成されるように設けられ、さらに、ドレンパンが上架台の枠開口を下側から塞いでいる。したがって、付加質量体上に機器を載置すると、機器からのドレン水が付加質量体の上面を伝って上記隙間を通り、その下のドレンパンに流れ落ちる。よって、ドレン水が外部に流出するのを防止することができる。   According to this, since the additional mass body is provided on the beam member disposed in the frame of the upper frame, it is only necessary to place it on the beam member when the additional mass body is installed. Therefore, it is easy to install the additional mass body. Further, the additional mass body is provided so that a gap is formed between the additional mass body and the upper frame when viewed from the vertical direction, and the drain pan closes the frame opening of the upper frame from the lower side. Accordingly, when the device is placed on the additional mass body, the drain water from the device flows along the upper surface of the additional mass body, passes through the gap, and flows down to the drain pan below it. Therefore, it is possible to prevent drain water from flowing out.

第２の発明は、上記第１の発明において、上記梁部材は、上記上架台よりも上面が低いことを特徴とするものである。   According to a second aspect, in the first aspect, the beam member has a lower upper surface than the upper base.

これによれば、梁部材が上架台よりも上面が低い、即ち上架台の枠内面の一部が梁部材の上面よりも高いので、付加質量体の上面を伝って梁部材の上面に流れ落ちたドレン水は、上記上架台の枠内面に当たってドレンパンに流れ落ちる。したがって、ドレン水の外部への流出を確実に防止することができる。   According to this, the upper surface of the beam member is lower than the upper frame, that is, a part of the inner surface of the frame of the upper frame is higher than the upper surface of the beam member, so that it flowed down to the upper surface of the beam member along the upper surface of the additional mass body. The drain water hits the inner surface of the frame of the upper base and flows down to the drain pan. Therefore, the drain water can be reliably prevented from flowing out.

本発明によれば、上架台の枠内に配設された梁部材上に付加質量体が設けられているので、付加質量体の設置時には、それを梁部材に載せるだけでよい。したがって、付加質量体の設置が容易である。また、機器からのドレン水が付加質量体を伝ってこの付加質量体と上架台との間の隙間を通り、その下のドレンパンに流れ落ちるので、ドレン水が外部に流出するのを防止することができる。   According to the present invention, since the additional mass body is provided on the beam member disposed in the frame of the upper frame, it is only necessary to place the additional mass body on the beam member when the additional mass body is installed. Therefore, it is easy to install the additional mass body. In addition, since drain water from the device travels through the additional mass body, passes through the gap between the additional mass body and the upper base, and flows down to the drain pan below it, it is possible to prevent drain water from flowing out to the outside. it can.

本発明の実施形態に係る防振架台のポンプが載置固定された状態における正面図である。It is a front view in the state where the pump of the vibration proof stand concerning the embodiment of the present invention was mounted and fixed. 本発明の実施形態に係る防振架台の平面図である。It is a top view of the vibration isolator stand which concerns on embodiment of this invention. 本発明の実施形態に係る防振架台の正面図である。It is a front view of the vibration isolator stand which concerns on embodiment of this invention. 本発明の実施形態に係る防振架台の側面図である。It is a side view of the vibration isolator stand which concerns on embodiment of this invention. 図３の一部拡大図である。FIG. 4 is a partially enlarged view of FIG. 3. ドレンパンを示す図であって、（ａ）は平面図であり、（ｂ）は正面図であり、（ｃ）は側面図である。It is a figure which shows a drain pan, Comprising: (a) is a top view, (b) is a front view, (c) is a side view. 防振架台を示す正面図であって、（ａ）はポンプ設置前を示す図であり、（ｂ）はポンプ設置途中を示す図であり、（ｃ）はポンプ設置後を示す図である。It is a front view which shows a vibration isolator, Comprising: (a) is a figure which shows a pump installation, (b) is a figure which shows the pump installation middle, (c) is a figure which shows a pump installation. 図７のVIII部拡大図である。It is the VIII section enlarged view of FIG.

以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。以下の実施形態では、本発明の防振架台をポンプ用防振架台に適用した例について説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use. In the following embodiment, an example in which the vibration isolator of the present invention is applied to a pump anti-vibration rack will be described.

本実施形態のポンプ用防振架台（以下、単に防振架台という）１は、床面Ｆ上に設置され、図示しない水処理装置に送水を行うポンプ（機器）Ｐが載置固定され、このポンプＰの作動時に生じる振動が床面Ｆに伝達するのを防止するものである。   A pump anti-vibration stand (hereinafter simply referred to as an anti-vibration stand) 1 of the present embodiment is installed on a floor surface F, and a pump (equipment) P for supplying water to a water treatment device (not shown) is placed and fixed on the floor F. The vibration generated when the pump P is operated is prevented from being transmitted to the floor surface F.

図１は、ポンプＰが載置固定された状態における防振架台１の正面図である。図２〜４は防振架台１を示す図であって、図２は平面図、図３は正面図、図４は側面図である。   FIG. 1 is a front view of the vibration isolator 1 in a state where the pump P is mounted and fixed. 2-4 is a figure which shows the vibration isolator stand 1, FIG. 2 is a top view, FIG. 3 is a front view, FIG. 4 is a side view.

上記防振架台１は、各々矩形枠状の金属製角パイプ（例えば構造用角形鋼管等）からなる上架台３及びその下方に間隔をあけて配置された下架台５を備え、両架台３，５間に４つのアイソレータ（防振装置）７，７，…が介設されている。各アイソレータ７は、上記両架台３，５間の振動伝達を軽減するものであり、例えばコイルばねとゴムとを一体成形したものや樹脂ケース内にコイルばねを内蔵したものが用いられる。尚、図１〜４及び以下で示す図５〜８において、防振架台１の長手方向及び短手方向をそれぞれ縦方向及び横方向とする。   The anti-vibration gantry 1 includes an upper gantry 3 made of metal rectangular pipes each having a rectangular frame shape (for example, a square steel pipe for structure) and a lower gantry 5 disposed below the upper gantry 3 at intervals. Four isolators (vibration isolation devices) 7, 7,... Are interposed between the five. Each isolator 7 is for reducing vibration transmission between the two gantry 3 and 5, and for example, one in which a coil spring and rubber are integrally molded or one in which a coil spring is built in a resin case is used. In addition, in FIGS. 1-4 and FIGS. 5-8 shown below, let the longitudinal direction and transversal direction of the vibration isolator stand 1 be a vertical direction and a horizontal direction, respectively.

上記両架台３，５はコーナー部で連結されており、各コーナー部の連結構造は互いにほぼ同一である。そこで、ここでは、図２の右下に位置するコーナー部の連結構造について説明する。図５は、このコーナー部の拡大図である。両架台３，５の各横方向外側面の縦方向端部に各々耐震ブラケット９が取り付けられ、両耐震ブラケット９，９は全ネジ１１及び４つの六角ナット１３，１３，…で連結されている。各耐震ブラケット９は、鋼板からなり、上記横方向外側面に固定される縦板部９ａと、その上下方向一方側端から垂直に延びる横板部９ｂと、これら縦横両板部９ａ，９ｂの幅方向一方側端面に接合された三角形状の側板部９ｃとを有している。横板部９ｂには、上記全ネジ１１が挿通する挿通孔が厚み方向に貫通形成されている。   The both pedestals 3 and 5 are connected at the corners, and the connecting structures of the corners are almost the same. Therefore, here, a connection structure of the corner portion located in the lower right of FIG. 2 will be described. FIG. 5 is an enlarged view of the corner portion. The seismic brackets 9 are respectively attached to the longitudinal ends of the laterally outer side surfaces of the two racks 3 and 5, and the seismic brackets 9 and 9 are connected by full screws 11 and four hexagon nuts 13, 13,. . Each seismic bracket 9 is made of a steel plate, and includes a vertical plate portion 9a fixed to the lateral outer side surface, a horizontal plate portion 9b extending vertically from one end in the vertical direction, and both vertical and horizontal plate portions 9a and 9b. And a triangular side plate portion 9c joined to one end face in the width direction. In the horizontal plate portion 9b, insertion holes through which all the screws 11 are inserted are formed in the thickness direction.

上架台３の耐震ブラケット９は、横板部９ｂが下側となり且つ側板部９ｃが縦方向内側となるように固定され、下架台５の耐震ブラケット９は、横板部９ｂが上側となり且つ側板部９ｃが縦方向内側となるように固定されている。そして、全ネジ１１が両耐震ブラケット９，９の各横板部９ｂを挿通し、下側の横板部９ｂに対応する部位においてこの横板部９ｂを上下から挟み込むように一対の六角ナット１３，１３が各々螺合し、上側の六角ナット１３上にワッシャ１５が外挿されている。また、全ネジ１１の上側の横板部９ｂに対応する部位にはゴムブッシュ１７が外挿され、このゴムブッシュ１７の上方に対応する部位に一対の六角ナット１３，１３が螺合している。防振架台１を使用するときには、上側の一対の六角ナット１３，１３の位置を調整し、該一対の六角ナット１３，１３とゴムブッシュ１７との間に適当な大きさ（約２〜３ｍｍ程度）の隙間を形成する。このことで、地震等による両架台３，５の上下方向の相対変位を適切に規制することができる。   The seismic bracket 9 of the upper pedestal 3 is fixed so that the horizontal plate portion 9b is on the lower side and the side plate portion 9c is on the inner side in the vertical direction, and the seismic bracket 9 of the lower pedestal 5 is the upper side of the horizontal plate portion 9b and the side plate. The portion 9c is fixed so as to be inside in the vertical direction. A pair of hexagon nuts 13 are inserted so that all the screws 11 pass through the horizontal plate portions 9b of both the earthquake-resistant brackets 9 and 9 and sandwich the horizontal plate portion 9b from above and below at a portion corresponding to the lower horizontal plate portion 9b. , 13 are screwed together, and a washer 15 is inserted on the upper hexagon nut 13. Further, a rubber bush 17 is externally inserted into a portion corresponding to the upper horizontal plate portion 9 b of the entire screw 11, and a pair of hexagon nuts 13 and 13 are screwed into a portion corresponding to the upper portion of the rubber bush 17. . When using the vibration isolator 1, the positions of the upper pair of hexagon nuts 13, 13 are adjusted, and an appropriate size (about 2 to 3 mm) between the pair of hexagon nuts 13, 13 and the rubber bush 17. ). Thus, the relative displacement in the vertical direction of the gantry 3 and 5 due to an earthquake or the like can be appropriately regulated.

一方、上記上架台３の下面には、その矩形状の枠開口１８（図２参照）を下側から塞ぐようにドレンパン１９が取付固定されている。図６は、ドレンパン１９を示す図であって、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図である。ドレンパン１９は、鋼板を曲げ加工したものであって、縦長の矩形状をなし、上架台３の枠開口１８に対応する部分に凹部１９ａが形成されている。この凹部１９ａは、深さが例えば１５ｍｍであって、中央にドレン孔１９ｂが形成された矩形状の底板部１９ｃと、その周囲を囲む周板部１９ｄとによって形成されている。底板部１９ｃのドレン孔１９ｂ裏面側には図示しないドレンプラグが取り付けられている。また、ドレンパン１９の四隅部には貫通孔１９ｅ，１９ｅ，…が形成されている。このドレンパン１９は、凹部１９ａが上方に開口するように上架台３下面に設置されて上記貫通孔１９ｅ，１９ｅ，…においてリベット止めされ、周板部１９ｄ上端と上架台３下面とが接している。   On the other hand, a drain pan 19 is attached and fixed to the lower surface of the upper base 3 so as to close the rectangular frame opening 18 (see FIG. 2) from below. 6A and 6B are diagrams showing the drain pan 19, wherein FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. 6C is a side view. The drain pan 19 is formed by bending a steel plate, has a vertically long rectangular shape, and a recess 19 a is formed in a portion corresponding to the frame opening 18 of the upper base 3. The recess 19a has a depth of, for example, 15 mm, and is formed by a rectangular bottom plate portion 19c having a drain hole 19b formed in the center and a peripheral plate portion 19d surrounding the periphery. A drain plug (not shown) is attached to the back side of the drain hole 19b of the bottom plate portion 19c. Further, through holes 19e, 19e,... Are formed at the four corners of the drain pan 19. The drain pan 19 is installed on the lower surface of the upper base 3 so that the recess 19a opens upward, and is riveted at the through holes 19e, 19e,..., And the upper end of the peripheral plate portion 19d and the lower surface of the upper base 3 are in contact with each other. .

また、図２に示すように、上記上架台３の枠内には、溝形鋼からなる一対の長梁（梁部材）２１，２１が横方向に間隔をあけて互いに平行に縦方向に延びており、この長梁２１，２１の間に溝形鋼からなる一対の短梁２３，２３が縦方向に間隔をあけて互いに平行に横方向に延びている。   In addition, as shown in FIG. 2, a pair of long beams (beam members) 21 and 21 made of channel steel extend in the longitudinal direction in parallel to each other at intervals in the frame of the upper frame 3. A pair of short beams 23, 23 made of channel steel extends between the long beams 21, 21 in the horizontal direction with a space in the vertical direction.

上記各長梁２１は、図３に示すように、溝が下方に開口するように配置され、上面２１ａが上架台３の上面３ａよりも低くなるように、両端が上架台３の横方向に延びる２辺の内側面に溶接固定されている。図３右側の長梁２１の横方向外側面縦方向中央には、不等辺山形鋼からなるポンプ固定部材２５が設けられている。このポンプ固定部材２５は、長辺部２５ａが横方向外側に延びるように短辺部２５ｂが上記横方向外側面に溶接固定されている。この長辺部２５ａにはポンプ取付孔２５ｃが上下方向に貫通形成されており、その下面にこのポンプ取付孔２５ｃと同軸に溶接ナット２７が固定されている。一方、図３左側の長梁２１の横方向外側面縦方向中央部には、縦長の不等辺山形鋼からなるポンプ固定部材２９が設けられている。このポンプ固定部材２９は、長辺部２９ａが横方向外側に延びるように短辺部２９ｂが上記横方向外側面に溶接固定されている。この長辺部２９ａの左右両端部には各々ポンプ取付孔２９ｃが上下方向に貫通形成されており、その下面にこのポンプ取付孔２９ｃと同軸に溶接ナット２７が固定されている。   As shown in FIG. 3, each of the long beams 21 is disposed so that the groove is opened downward, and both ends thereof are in the lateral direction of the upper base 3 so that the upper surface 21 a is lower than the upper surface 3 a of the upper base 3. It is fixed by welding to the inner surface of the two extending sides. A pump fixing member 25 made of unequal angle irons is provided at the longitudinal center of the lateral outer surface of the long beam 21 on the right side of FIG. As for this pump fixing member 25, the short side part 25b is weld-fixed to the said horizontal direction outer side surface so that the long side part 25a may extend in the horizontal direction outer side. A pump mounting hole 25c is formed through the long side portion 25a in the vertical direction, and a welding nut 27 is fixed on the lower surface thereof coaxially with the pump mounting hole 25c. On the other hand, a pump fixing member 29 made of vertically long unequal angle iron is provided in the longitudinal direction central portion of the laterally outer surface of the long beam 21 on the left side of FIG. In the pump fixing member 29, the short side portion 29b is welded and fixed to the laterally outer side surface so that the long side portion 29a extends outward in the lateral direction. Pump attachment holes 29c are vertically formed at both left and right ends of the long side portion 29a, and a welding nut 27 is fixed coaxially with the pump attachment hole 29c on the lower surface thereof.

上記各短梁２３は、溝が下方に開口するように配置され、上面２３ａが上記長梁２１の上面２１ａと面一となるように、両端が上記一対の長梁２１，２１の横方向内側面に溶接固定されている。各短梁２３の縦方向外側面横方向中央には、不等辺山形鋼からなるポンプ固定部材２５が設けられている。このポンプ固定部材２５は、長辺部２５ａが縦方向外側に延びるように短辺部２５ｂが上記縦方向外側面に溶接固定されている。この長辺部２５ａにはポンプ取付孔２５ｃが上下方向に貫通形成されており、その下面にこのポンプ取付孔２５ｃと同軸に溶接ナット２７が固定されている。   Each of the short beams 23 is arranged so that the groove is opened downward, and both ends are in the lateral direction of the pair of long beams 21 and 21 so that the upper surface 23a is flush with the upper surface 21a of the long beam 21. It is fixed to the side by welding. A pump fixing member 25 made of unequal angle iron is provided at the center in the horizontal direction of the outer side of each short beam 23. In the pump fixing member 25, the short side portion 25b is welded and fixed to the outer side in the vertical direction so that the long side portion 25a extends outward in the vertical direction. A pump mounting hole 25c is formed through the long side portion 25a in the vertical direction, and a welding nut 27 is fixed on the lower surface thereof coaxially with the pump mounting hole 25c.

上記長梁２１，２１及び短梁２３，２３上には、縦長矩形状の鋼板（付加質量体）３１が設けられていて、そのサイズは上記上架台３の内周よりも僅かに小さく、上下方向から見て上架台３との間に全周に亘って隙間３３が設けられている。この隙間３３の幅は、例えば１０ｍｍである。また、鋼板３１の上記ポンプ取付孔２５ｃ，２９ｃのそれぞれに対応する位置には貫通孔３１ａが厚み方向に形成され、ポンプ固定用のボルト３５がこの貫通孔３１ａを挿通する。   A vertically long rectangular steel plate (additional mass body) 31 is provided on the long beams 21 and 21 and the short beams 23 and 23, and the size thereof is slightly smaller than the inner circumference of the upper base 3, and A gap 33 is provided around the entire circumference of the upper base 3 when viewed from the direction. The width of the gap 33 is, for example, 10 mm. A through hole 31a is formed in the thickness direction at a position corresponding to each of the pump mounting holes 25c and 29c of the steel plate 31, and a bolt 35 for fixing the pump is inserted through the through hole 31a.

次に、ポンプＰを防振架台１に設置する手順を図７を参照して説明する。図７は、防振架台１を示す正面図であって、（ａ）はポンプＰ設置前を示す図、（ｂ）はポンプＰ設置途中を示す図、（ｃ）はポンプＰ設置後を示す図である。先ず、図７（ａ）に示すように、ボルト３５，３５，…を鋼板３１の貫通孔３１ａ，３１ａ，…に挿通して溶接ナット２７，２７，…に螺合させた状態の防振架台１を床面Ｆに置く。次に、ボルト３５，３５，…を取り外し、図７（ｂ）に示すようにポンプＰを鋼板３１上に載せる。最後に、図７（ｃ）に示すように、ポンプＰのベース部に上方からボルト３５，３５，…を挿通し、溶接ナット２７，２７，…に螺合させ、ポンプＰをポンプ固定部材２５，２９を介して長梁２１，２１及び短梁２３，２３に固定する。   Next, the procedure for installing the pump P on the vibration isolator 1 will be described with reference to FIG. FIGS. 7A and 7B are front views showing the vibration isolator 1, wherein FIG. 7A is a view before the installation of the pump P, FIG. 7B is a view showing the installation of the pump P, and FIG. FIG. First, as shown in FIG. 7 (a), the anti-vibration stand in a state where the bolts 35, 35,... Are inserted into the through holes 31a, 31a,. 1 is placed on the floor F. Next, the bolts 35, 35,... Are removed, and the pump P is placed on the steel plate 31 as shown in FIG. Finally, as shown in FIG. 7C, bolts 35, 35,... Are inserted into the base portion of the pump P from above and screwed into the welding nuts 27, 27,. , 29 to the long beams 21, 21 and the short beams 23, 23.

−効果−
本実施形態の防振架台１によれば、上架台３の枠内に配設された長梁２１，２１上に付加質量体である鋼板３１が設けられているので、鋼板３１の設置時には、それを長梁２１，２１に載せるだけでよい。したがって、付加質量体の設置が容易である。さらに、付加質量体の質量を変更する際には、異なる質量の鋼板３１に変えるだけなので、変更作業も容易である。 -Effect-
According to the vibration isolator 1 of the present embodiment, since the steel plate 31 that is the additional mass body is provided on the long beams 21 and 21 disposed in the frame of the upper stand 3, when the steel plate 31 is installed, It is only necessary to put it on the long beams 21 and 21. Therefore, it is easy to install the additional mass body. Furthermore, when the mass of the additional mass body is changed, the change work is easy because only the steel plate 31 having a different mass is changed.

また、鋼板３１が上下方向から見て上架台３との間に隙間３３が形成されるように長梁２１，２１及び短梁２３，２３上に設けられ、さらに、ドレンパン１９が上架台３の枠開口１８を下側から塞いでいる。ここで、図８に図７のVIII部を拡大したものを示すと、ポンプＰからのドレン水は矢印で示すように鋼板３１の上面を伝って上記隙間３３を通り、その下のドレンパン１９に流れ落ちる。したがって、ドレン水が外部に流出するのを防止することができる。   Further, the steel plate 31 is provided on the long beams 21 and 21 and the short beams 23 and 23 so that a gap 33 is formed between the steel plate 31 and the upper frame 3 when viewed from above and below, and the drain pan 19 is provided on the upper frame 3. The frame opening 18 is closed from below. Here, FIG. 8 shows an enlarged view of the portion VIII in FIG. 7. Drain water from the pump P travels along the upper surface of the steel plate 31 as shown by the arrow, passes through the gap 33, and enters the drain pan 19 below it. run down. Therefore, it is possible to prevent the drain water from flowing out.

さらに、長梁２１，２１の上面２１ａ，２１ａが上架台３の上面３ａよりも低い、即ち上架台３の枠内面の一部が長梁２１，２１の上面２１ａ，２１ａよりも高いので、鋼板３１の上面を伝って当該上面２１ａ，２１ａに流れ落ちたドレン水は、上架台３の枠内面に当たってドレンパン１９に流れ落ちる。したがって、ドレン水の外部への流出を確実に防止することができる。   Further, since the upper surfaces 21a, 21a of the long beams 21, 21 are lower than the upper surface 3a of the upper frame 3, that is, a part of the inner surface of the frame of the upper frame 3 is higher than the upper surfaces 21a, 21a of the long beams 21, 21. The drain water that has flowed down to the upper surfaces 21 a and 21 a along the upper surface of 31 hits the inner surface of the frame of the upper frame 3 and flows down to the drain pan 19. Therefore, the drain water can be reliably prevented from flowing out.

また、本実施形態の防振架台１では、ポンプＰを載置固定する際に、鋼板３１上にポンプＰを載せ、そのベース部上方からボルト３５を挿通させて螺合させるだけなので、固定作業が容易である。   Further, in the vibration isolator 1 of the present embodiment, when the pump P is mounted and fixed, the pump P is simply placed on the steel plate 31, and the bolt 35 is inserted from above the base portion and screwed together. Is easy.

また、コンクリートを利用する従来タイプの防振架台では、その廃棄時にコンクリートの処理に手間がかかり、また、環境負荷も大きい。これに対し、本実施形態の防振架台１では、再利用が容易な鋼板３１を用いているので、従来タイプと比較して廃棄処理が容易で環境負荷も小さい。さらに、安価な鋼板３１を用いているので、製造コストを抑えることができる。   In addition, in the conventional type vibration isolator using concrete, it takes time to dispose of the concrete at the time of disposal, and the environmental load is large. On the other hand, in the vibration isolator 1 of the present embodiment, the steel plate 31 that can be easily reused is used, so that the disposal process is easier and the environmental load is smaller than the conventional type. Furthermore, since the cheap steel plate 31 is used, manufacturing cost can be suppressed.

（その他の実施形態）
上記実施形態では、上記隙間３３が鋼板３１外周の全周に亘って設けられているが、これに限定されず、鋼板３１外周の一部に上記隙間３３が設けられてもよい。但し、ドレン水の流出防止の観点から、上記隙間３３が鋼板３１外周の全周に亘って設けられているのが好ましい。 (Other embodiments)
In the said embodiment, although the said gap | interval 33 is provided over the perimeter of the steel plate 31, it is not limited to this, The said gap | interval 33 may be provided in a part of steel plate 31 outer periphery. However, from the viewpoint of preventing drain water from flowing out, the gap 33 is preferably provided over the entire outer periphery of the steel plate 31.

また、上記実施形態では、付加質量体として鋼板３１を用いているが、これに限定されず、上架台３の枠内に納まって上架台３との間に隙間３３が設けられるようなものであればよい。但し、環境負荷低減及び製造コスト抑制の観点から、上記実施形態のように鋼板３１を用いるのが好ましい。   Moreover, in the said embodiment, although the steel plate 31 is used as an additional mass body, it is not limited to this, The clearance gap 33 is provided in the frame of the upper mount 3, and it is provided in between. I just need it. However, it is preferable to use the steel plate 31 like the said embodiment from a viewpoint of environmental load reduction and manufacturing cost control.

また、上記実施形態では、長梁２１，２１の上面２１ａ，２１ａが上架台３の上面３ａよりも低いが、これに限定されず、この上面３ａと同じ高さ又はそれより高くてもよい。但し、ドレン水の流出を確実に防止する観点から、上記上面２１ａ，２１ａが上架台３の上面３ａよりも低いほうが好ましい。   Moreover, in the said embodiment, although the upper surfaces 21a and 21a of the long beams 21 and 21 are lower than the upper surface 3a of the upper stand 3, it is not limited to this, You may be the same height as this upper surface 3a or it. However, it is preferable that the upper surfaces 21a and 21a are lower than the upper surface 3a of the gantry 3 from the viewpoint of reliably preventing drain water from flowing out.

さらに、上記実施形態では、梁部材が一対の長梁２１，２１で構成されているが、これに限定されず、上架台３の枠内に配設固定され、鋼板３１を支持できるものであればよい。   Furthermore, in the said embodiment, although the beam member is comprised by a pair of long beams 21 and 21, it is not limited to this, What is arrange | positioned and fixed in the frame of the upper frame 3, and can support the steel plate 31 is not limited. That's fine.

さらにまた、上記実施形態では、ポンプＰがポンプ固定用部材２５，２９を介して長梁２１，２１及び短梁２３，２３に固定されているが、これに限定されず、長梁２１，２１及び短梁２３，２３に直接固定されてもよい。   Furthermore, in the said embodiment, although the pump P is being fixed to the long beams 21 and 21 and the short beams 23 and 23 via the pump fixing members 25 and 29, it is not limited to this, The long beams 21 and 21 And may be directly fixed to the short beams 23, 23.

また、上記実施形態では、載置固定される機器がポンプＰであるが、これに限定されない。   Moreover, in the said embodiment, although the apparatus mounted and fixed is the pump P, it is not limited to this.

また、上記実施形態では、ドレン孔１９ｂがドレンパン１９中央に設けられているが、これに限定されず、その他の位置に設けられてもよい。   Moreover, in the said embodiment, although the drain hole 19b is provided in the drain pan 19 center, it is not limited to this, You may provide in another position.

以上説明したように、本発明に係る防振架台は、ドレン水が防振架台の外に流出するのを防止する用途等に適用することができる。   As described above, the vibration isolator according to the present invention can be applied to a use for preventing drain water from flowing out of the vibration isolator.

１ ポンプ用防振架台（防振架台）
３ 上架台
３ａ 上面（上架台の上面）
５ 下架台
７ アイソレータ（防振装置）
１８ 枠開口
２１ 長梁（梁部材）
２１ａ 上面（梁部材の上面）
３１ 鋼板（付加質量体）
３３ 隙間
Ｐ ポンプ（機器） 1 Anti-vibration stand for pump (vibration-proof stand)
3 Upper stand 3a Upper surface (upper surface of the upper stand)
5 Lower stand 7 Isolator (anti-vibration device)
18 Frame opening 21 Long beam (beam member)
21a Upper surface (upper surface of the beam member)
31 Steel plate (additional mass)
33 Clearance P Pump (Equipment)

Claims (2)

上架台と、該上架台の下方に配置された下架台と、該両架台間に介設された防振装置とを備え、機器が載置固定される防振架台であって、
上記上架台は、枠状をなして、内側に枠開口を有し、
上記上架台に固定され、該上架台の枠開口を下側から塞ぐドレンパンと、
上記上架台の枠内に配設され、両端が該上架台に各々接合された梁部材と、
上下方向から見て上記上架台との間に隙間が形成されるように上記梁部材上に設けられ、その上に上記機器が載置される付加質量体とを備えていることを特徴とする防振架台。 An anti-vibration gantry comprising an upper gantry, a lower gantry arranged below the upper gantry, and a vibration isolator interposed between the two gantry, on which equipment is placed and fixed,
The upper frame has a frame shape and has a frame opening inside,
A drain pan which is fixed to the upper frame and closes the frame opening of the upper frame from below;
A beam member disposed within the frame of the upper frame, and both ends joined to the upper frame;
An additional mass body is provided on the beam member so that a gap is formed between the upper base and the upper base when viewed in the vertical direction, and the device is placed thereon. Anti-vibration mount. 請求項１に記載の防振架台において、
上記梁部材は、上記上架台よりも上面が低いことを特徴とする防振架台。 The vibration isolator according to claim 1,
The anti-vibration gantry, wherein the beam member has a lower upper surface than the upper gantry.
JP2012129105A 2012-06-06 2012-06-06 Anti-vibration stand Active JP5912885B2 (en)

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