JP2019020359A - Detection mechanism - Google Patents

Detection mechanism Download PDF

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JP2019020359A
JP2019020359A JP2017141814A JP2017141814A JP2019020359A JP 2019020359 A JP2019020359 A JP 2019020359A JP 2017141814 A JP2017141814 A JP 2017141814A JP 2017141814 A JP2017141814 A JP 2017141814A JP 2019020359 A JP2019020359 A JP 2019020359A
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support
relative movement
slide
sliding contact
detection mechanism
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JP6890322B2 (en
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健二 五味
Kenji Gomi
健二 五味
荒水　照夫
Teruo Aramizu
照夫 荒水
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Tokyo Denki University
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Abstract

To provide a detection mechanism allowing easy detection of an abnormal support capacity of the mechanism for supporting a load in a movable state.SOLUTION: A detection mechanism 30 includes: a first slide contact body 36 (first support body) for supporting a load of a slide body 34 (movable body); a second slide contact body 38 (second support body) for supporting the load from the first slide contact body 36; and a first mark 42 and second mark 44 for detecting relative movement to the first slide contact body 36 and second slide contact body 38. Relative movement force acting between the slide body 34 and the first slide contact body 36 during normal support capacity is set lower than relative movement force acting between the first slide contact body 36 and the second slide contact body 38. During abnormal support capacity, occurrence of the relative movement can be visually detected.SELECTED DRAWING: Figure 2

Description

本発明は、可動状態で荷重を支える機構の支持能力を検知する検知機構に関する。   The present invention relates to a detection mechanism that detects a support capability of a mechanism that supports a load in a movable state.

荷重を支える支持機構は、インフラや一般的な機械部品など、様々な構造で広く使用されている。   Support mechanisms for supporting loads are widely used in various structures such as infrastructure and general mechanical parts.

このうち、荷重が加えられた部材を可動状態で支える支持機構では、弾性、滑り、転がりなどの機構を用いて支持する構成にされていることが多い。   Of these, a support mechanism that supports a member to which a load is applied in a movable state is often configured to support using a mechanism such as elasticity, sliding, and rolling.

例えば、橋梁では、橋桁長手方向の各部位が、橋桁が撓むことによって位置変化できるように、橋桁を支える支持部材に対して橋桁が橋桁長手方向に摺動できる構成にされている（例えば特許文献１参照）。   For example, the bridge girder is configured to be able to slide in the longitudinal direction of the bridge girder with respect to the support member that supports the bridge girder so that the position of each part in the longitudinal direction of the girder can be changed by bending the bridge girder (for example, a patent) Reference 1).

特開2003-074013JP2003-074013

ところで、従来の支持機構では、劣化などにより支持能力が低下していても、この低下を簡単に判断することは難しい。   By the way, in the conventional support mechanism, even if the support capability is reduced due to deterioration or the like, it is difficult to easily judge the decrease.

本発明は上記課題に鑑みてなされたものであり、可動状態で荷重を支持する機構の支持能力異常を簡単に検出することを可能にする検知機構を提供することを課題とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a detection mechanism that makes it possible to easily detect a support capability abnormality of a mechanism that supports a load in a movable state.

上記目的を達成するために、本発明に係る検知機構は、可動体からの荷重を支える第１支持体と、前記第１支持体からの荷重を支える第２支持体と、前記第１支持体と前記第２支持体との相対移動を検出する相対移動検出手段と、で構成され、支持能力正常時に前記可動体と前記第１支持体との間に作用する相対移動力は、前記第１支持体と前記第２支持体との間に作用する相対移動力よりも小さくされており、支持能力異常時には、前記相対移動が生じたことを前記相対移動検出手段で検出可能であることを特徴とする。   In order to achieve the above object, a detection mechanism according to the present invention includes a first support that supports a load from a movable body, a second support that supports a load from the first support, and the first support. And relative movement detecting means for detecting relative movement between the second support body and the relative movement force acting between the movable body and the first support body when the support capability is normal. The relative movement force acting between the support and the second support is made smaller, and when the support capability is abnormal, the relative movement detection means can detect that the relative movement has occurred. And

本発明に係る検知機構では、可動体、第１支持体および第２支持体それぞれは、必ずしも互いに接触している必要はなく、例えばそれぞれの境界を流体で満たす、あるいは磁力の反発を利用するなどして、互いに浮上させてもよい。そして、支持能力正常時に可動体と第１支持体との間に作用する相対移動力は、第１支持体と第２支持体との間に作用する相対移動力よりも小さくされており、支持能力異常時には、第１支持体と第２支持体とで相対移動が生じたことを相対移動検出手段で検出可能である。   In the detection mechanism according to the present invention, the movable body, the first support body, and the second support body do not necessarily need to be in contact with each other. For example, each boundary is filled with a fluid, or repulsion of magnetic force is used. Then, they may be lifted together. The relative movement force acting between the movable body and the first support body when the support capability is normal is smaller than the relative movement force acting between the first support body and the second support body. When the capability is abnormal, the relative movement detecting means can detect that relative movement has occurred between the first support and the second support.

支持能力異常時の原因は、例えば、流体量の減少や磁力減少などによる浮上力の低下が挙げられる。これらの場合では、流体の追加、磁力を正常化する部品交換などで機能を回復させることができる。   The cause when the supporting ability is abnormal includes, for example, a decrease in levitation force due to a decrease in the amount of fluid or a decrease in magnetic force. In these cases, the function can be restored by adding a fluid or replacing parts to normalize the magnetic force.

本発明によれば、可動状態で荷重を支持する機構の支持能力異常を簡単に検出することを可能にする検知機構を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the detection mechanism which makes it possible to detect easily the support capability abnormality of the mechanism which supports a load in a movable state can be provided.

第１実施形態に係る検知機構で、（ａ）は支持能力が正常であることが目視されることを示す説明図、（ｂ）は支持能力が低下していることが目視されることを示す説明図である。In the detection mechanism according to the first embodiment, (a) is an explanatory diagram showing that the supporting ability is normal, and (b) shows that the supporting ability is lowered. It is explanatory drawing. 第２実施形態に係る検知機構で、（ａ）は支持能力が正常であることが目視されることを示す説明図、（ｂ）は支持能力が低下していることが目視されることを示す説明図である。In the detection mechanism which concerns on 2nd Embodiment, (a) is explanatory drawing which shows that it is visually observed that support capability is normal, (b) shows that it is visually observed that support capability is falling. It is explanatory drawing. 従来の支持機構で、（ａ）は使用中であることを示す説明図、（ｂ）は回転軸部材とブッシュとが互いに局部的に溶着して回転支持能力の低下を招き、使用に支障が生じたことを示す説明図である。In the conventional support mechanism, (a) is an explanatory view showing that it is in use, and (b) is that the rotary shaft member and the bush are locally welded to each other, resulting in a decrease in the rotational support capability, which hinders use. It is explanatory drawing which shows having arisen.

以下、添付図面を参照して、本発明の実施の形態について説明する。以下の実施形態では、可動体が第１支持体に接触し、第１支持体が第２支持体に接触している例で説明するが、本発明の実施の形態では、可動体、第１支持体、第２支持体それぞれは、必ずしも互いに接触している必要はなく、例えばそれぞれの境界を流体で満たす、あるいは磁力の反発を利用するなどして、互いに浮上させた形態であってもよい。   Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following embodiments, an example in which the movable body is in contact with the first support and the first support is in contact with the second support will be described. However, in the embodiment of the present invention, the movable body, the first Each of the support body and the second support body does not necessarily need to be in contact with each other, and may be in the form of floating on each other, for example, by filling each boundary with a fluid or using repulsion of magnetic force. .

［第１実施形態］
まず、第１実施形態を説明する。図１は、本実施形態に係る検知機構で、（ａ）は支持能力が正常であることが目視されることを示す説明図、（ｂ）は支持能力が低下している（支持能力異常である）ことが目視されることを示す説明図である。 [First Embodiment]
First, the first embodiment will be described. FIG. 1 is a detection mechanism according to the present embodiment, (a) is an explanatory diagram showing that the support capability is normal, and (b) is a decrease in support capability (the support capability is abnormal). It is explanatory drawing which shows that it is visually observed.

本実施形態に係る検知機構１０は、回転軸部材を支える支持機構１２に備えられた検知機構である。この検知機構１０は、回転軸部材１４の外周側に面接触して回転軸部材１４からの荷重を支えるインナーブッシュ１６（第１支持体）と、インナーブッシュ１６の外周側に面接触してインナーブッシュ１６からの荷重を支えるアウターブッシュ１８（第２支持体）と、で構成される。この構成では、回転軸部材１４とインナーブッシュ１６とで軸受が形成されているとも言える。   The detection mechanism 10 according to the present embodiment is a detection mechanism provided in the support mechanism 12 that supports the rotating shaft member. The detection mechanism 10 is in surface contact with the outer peripheral side of the rotary shaft member 14 to support the load from the rotary shaft member 14 and the inner bush 16 is in surface contact with the outer peripheral side of the inner bush 16. And an outer bush 18 (second support) that supports the load from the bush 16. In this configuration, it can be said that a bearing is formed by the rotary shaft member 14 and the inner bush 16.

また、本実施形態では、アウターブッシュ１８の外周側に位置しアウターブッシュ１８を固定していてアウターブッシュ１８からの荷重を支える支持体２０を、支持機構１２が備えており、支持体２０はハウジングとしての機能も有している。   Further, in the present embodiment, the support mechanism 12 includes the support body 20 that is positioned on the outer peripheral side of the outer bush 18 and that supports the load from the outer bush 18 while fixing the outer bush 18. It also has a function as

インナーブッシュ１６には目印として第１マーク２２（相対移動検出手段）が付され、アウターブッシュ１８には第１マーク２２に対応する位置に目印として第２マーク２４（相対移動検出手段）が付されている。本実施形態では、第１マーク２２の外側に隣接するように第２マーク２４が位置している。例えば図１（ａ）に示すように、第１マーク２２は、インナーブッシュ１６の上部位置に上下方向に沿って直線状に形成され、第２マーク２４は、アウターブッシュ１８の上部位置に上下方向に沿って直線状に形成されており、第１マーク２２と第２マーク２４とが一直線状に位置している。   The inner bush 16 is provided with a first mark 22 (relative movement detecting means) as a mark, and the outer bush 18 is provided with a second mark 24 (relative movement detecting means) as a mark at a position corresponding to the first mark 22. ing. In the present embodiment, the second mark 24 is positioned so as to be adjacent to the outside of the first mark 22. For example, as shown in FIG. 1A, the first mark 22 is formed in a straight line along the vertical direction at the upper position of the inner bush 16, and the second mark 24 is formed at the upper position of the outer bush 18 in the vertical direction. The first mark 22 and the second mark 24 are positioned in a straight line.

そして、支持機構１２の支持能力正常時に回転軸部材１４とインナーブッシュ１６との間に作用する摩擦力は、インナーブッシュ１６とアウターブッシュ１８との間に作用する摩擦力よりも小さくされており、第２マーク２４に対する第１マーク２２の相対移動が発生することで支持能力が低下して支持能力異常となっていることが判断可能にされている。   The friction force acting between the rotating shaft member 14 and the inner bush 16 when the support capability of the support mechanism 12 is normal is made smaller than the friction force acting between the inner bush 16 and the outer bush 18. Since the relative movement of the first mark 22 with respect to the second mark 24 occurs, it is possible to determine that the support capability is reduced and the support capability is abnormal.

（作用、効果）
以下、本実施形態の作用、効果を説明する。支持機構１２の支持能力が正常であるときには、上述したように、回転軸部材１４とインナーブッシュ１６との間に作用する摩擦力は、インナーブッシュ１６とアウターブッシュ１８との間に作用する摩擦力よりも小さくされている。従って、回転軸部材１４とインナーブッシュ１６との相対移動は生じ、インナーブッシュ１６とアウターブッシュ１８との相対移動は生じない。従って、第１マーク２２と第２マーク２４との相対移動は生じず、第１マーク２２と第２マーク２４とが一直線状に位置した状態が保たれる。 (Function, effect)
Hereinafter, the operation and effect of the present embodiment will be described. When the support capability of the support mechanism 12 is normal, the frictional force acting between the rotating shaft member 14 and the inner bushing 16 is the frictional force acting between the inner bushing 16 and the outer bushing 18 as described above. Has been smaller than. Accordingly, relative movement between the rotary shaft member 14 and the inner bush 16 occurs, and relative movement between the inner bush 16 and the outer bush 18 does not occur. Therefore, relative movement between the first mark 22 and the second mark 24 does not occur, and the state where the first mark 22 and the second mark 24 are positioned in a straight line is maintained.

インナーブッシュ１６の内周面側が摩耗することによりインナーブッシュ１６の劣化などの不具合が生じると、回転軸部材１４とインナーブッシュ１６との間に作用する摩擦力（相対移動力）が増大する。そして、この摩擦力がインナーブッシュ１６とアウターブッシュ１８との間に作用する摩擦力（相対移動力）よりも大きくなるときが生じると、インナーブッシュ１６とアウターブッシュ１８との相対移動が生じる。   When a problem such as deterioration of the inner bush 16 occurs due to wear of the inner peripheral surface side of the inner bush 16, a frictional force (relative movement force) acting between the rotary shaft member 14 and the inner bush 16 increases. When this frictional force becomes larger than the frictional force (relative movement force) acting between the inner bush 16 and the outer bush 18, relative movement between the inner bush 16 and the outer bush 18 occurs.

この結果、インナーブッシュ１６がアウターブッシュ１８に対し、回転軸部材１４の回転方向に相対移動する（図１（ｂ）参照）。この結果、第２マーク２４に対して第１マーク２２が離れる方向に相対移動する。このように相対移動したことが可視化されているので、作業員や検査員などが、目視により、支持機構１２の支持能力が低下したと判断することができる。そして、インナーブッシュ１６を未使用のものに交換する。   As a result, the inner bush 16 moves relative to the outer bush 18 in the rotation direction of the rotary shaft member 14 (see FIG. 1B). As a result, the first mark 22 moves relative to the second mark 24 in the direction away from it. Since the relative movement is visualized in this way, an operator, an inspector, or the like can visually determine that the support capability of the support mechanism 12 has decreased. Then, the inner bush 16 is replaced with an unused one.

従って、本実施形態により、インナーブッシュ１６の劣化による交換が必要である（すなわち、支持能力異常が生じている）と判断するにあたり、従来のように、支持機構の分解整備時に摩耗状態を調べることや、回転軸部材の回転抵抗を計測することが不要になり、また、回転軸部材１４とインナーブッシュ１６とが互いに局部的に溶着することで初めて交換が必要であると気付く事態も回避することができる。   Therefore, according to the present embodiment, when it is determined that replacement due to deterioration of the inner bush 16 is necessary (that is, an abnormality in support capability has occurred), the wear state is examined during disassembly and maintenance of the support mechanism as in the past. In addition, it is not necessary to measure the rotational resistance of the rotary shaft member, and it is also possible to avoid a situation where the rotary shaft member 14 and the inner bush 16 are locally welded to each other, so that it is noticed that replacement is necessary for the first time. Can do.

なお、本実施形態では、アウターブッシュ１８が支持体２０に固定されている構成で説明したが、アウターブッシュ１８と支持体２０との間の摩擦力がインナーブッシュ１６とアウターブッシュ１８との摩擦力よりも大きくする構成にしても、同様の効果を奏することができる。   In the present embodiment, the configuration in which the outer bush 18 is fixed to the support body 20 has been described. However, the friction force between the outer bush 18 and the support body 20 is the friction force between the inner bush 16 and the outer bush 18. Even if it is configured to be larger than that, the same effect can be obtained.

また、本実施形態では、回転軸部材１４と支持体２０との間にインナーブッシュ１６とアウターブッシュ１８とが設けられた２重構造の例で説明したが、更にブッシュを増やした多重構造（３重構造以上）とすることも可能である。   In the present embodiment, an example of a double structure in which the inner bush 16 and the outer bush 18 are provided between the rotating shaft member 14 and the support 20 has been described. However, a multiple structure (3 It is also possible to have a heavy structure or more.

また、本実施形態では、回転軸部材１４がインナーブッシュ１６に接触し、インナーブッシュ１６がアウターブッシュ１８に接触する例で説明したが、他の部材に接触する例（例えば玉軸受け）であっても、同様の効果を奏することができる。   In the present embodiment, the rotating shaft member 14 is in contact with the inner bush 16 and the inner bush 16 is in contact with the outer bush 18. However, in this embodiment, the rotating shaft member 14 is in contact with other members (for example, ball bearings). The same effect can be achieved.

また、本実施形態では、回転可能な部材の一例として回転軸部材１４を挙げて説明したが、回転角度範囲が限られた回動部材など、他の回転可能な部材にも適用可能である。   In the present embodiment, the rotating shaft member 14 is described as an example of a rotatable member. However, the present invention can be applied to other rotatable members such as a rotating member having a limited rotation angle range.

［第２実施形態］
次に、第２実施形態を説明する。図２は、本実施形態に係る検知機構で、（ａ）は支持能力が正常であることが目視されることを示す説明図、（ｂ）は支持能力が低下している（支持能力異常である）ことが目視されることを示す説明図である。 [Second Embodiment]
Next, a second embodiment will be described. FIG. 2 is a detection mechanism according to the present embodiment, (a) is an explanatory diagram showing that the support capability is normal, and (b) is a decrease in support capability (the support capability is abnormal). It is explanatory drawing which shows that it is visually observed.

本実施形態に係る検知機構３０は、長尺状のスライド体３４をスライド移動可能に支える支持機構３２に備えられた検知機構である。この検知機構３０は、スライド体３４（可動体）を長手方向Ｕに摺動可能なように下方から面接触して支える第１摺接体３６（第１支持体）と、第１摺接体３６をスライド体３４の長手方向Ｕに摺動可能なように下方から面接触して支える第２摺接体３８（第２支持体）とで構成される。   The detection mechanism 30 according to the present embodiment is a detection mechanism provided in a support mechanism 32 that supports a long slide body 34 so as to be slidable. The detection mechanism 30 includes a first sliding contact body 36 (first support body) that supports the sliding body 34 (movable body) by making surface contact from below so as to be slidable in the longitudinal direction U, and a first sliding contact body. 36 is constituted by a second sliding contact body 38 (second support body) which is supported in surface contact from below so as to be slidable in the longitudinal direction U of the slide body 34.

また、本実施形態では、第２摺接体３８の下方側に位置し第２摺接体３８を固定している支持体４０が支持機構３２に設けられている。この支持体４０は、第２摺接体３８からの荷重を支えている。   In the present embodiment, the support mechanism 32 is provided on the support mechanism 32 so as to be positioned below the second slide contact body 38 and fix the second slide contact body 38. The support body 40 supports the load from the second sliding contact body 38.

第１摺接体３６は、スライド体３４が長手方向Ｕに摺動可能となるように下側から摺接する上側摺接部材３６ａと、上側摺接部材３６ａの下側に着脱自在に固定され、第２摺接体３８に対して下面側で長手方向Ｕに摺動可能なように摺接する下側摺接部材３６ｂと、で構成される。なお、スライド体３４が橋桁を構成し、第１摺接体３６と第２摺接体３８とがすべり支承Ｇを構成する構造であってもよい。   The first sliding contact body 36 is detachably fixed to an upper sliding contact member 36a that is slidably contacted from below so that the sliding body 34 can slide in the longitudinal direction U, and a lower side of the upper sliding contact member 36a, A lower slidable contact member 36b that is slidably contacted with the second slidable contact body 38 so as to be slidable in the longitudinal direction U on the lower surface side. The slide body 34 may constitute a bridge girder, and the first sliding contact body 36 and the second sliding contact body 38 may constitute a sliding bearing G.

第１摺接体３６の下側摺接部材３６ｂには、目印として第１マーク４２（相対移動検出手段）が付され、第２摺接体３８には第１マーク４２に対応する位置に目印として第２マーク４４（相対移動検出手段）が付されている。本実施形態では、第１マーク４２の下側に隣接するように第２マーク４４が位置している。例えば図２（ａ）に示すように、スライド体３４の短手方向（長手方向Ｕに直交する方向であり、図２（ａ）の紙面に対する直交方向）から見て、第１マーク４２は、第１摺接体３６の左右方向中央位置に上下方向に沿って直線状に形成され、第２マーク４４は、第２摺接体３８の左右方向中央位置に上下方向に沿って直線状に形成されており、第１マーク４２と第２マーク４４とが一直線状に位置している。   The lower sliding contact member 36b of the first sliding contact 36 is provided with a first mark 42 (relative movement detecting means) as a mark, and the second sliding contact 38 is marked at a position corresponding to the first mark 42. As a second mark 44 (relative movement detecting means). In the present embodiment, the second mark 44 is located adjacent to the lower side of the first mark 42. For example, as shown in FIG. 2A, when viewed from the short direction of the slide body 34 (the direction perpendicular to the longitudinal direction U and the direction perpendicular to the paper surface of FIG. 2A), the first mark 42 is The first slidable contact body 36 is linearly formed along the vertical direction at the center position in the left-right direction, and the second mark 44 is formed linearly along the vertical direction at the center position in the left-right direction of the second slidable contact body 38. The first mark 42 and the second mark 44 are positioned in a straight line.

そして、支持機構３２の支持能力正常時にスライド体３４と第１摺接体３６の上側摺接部材３６ａとの間に作用する摩擦力（相対移動力）は、第１摺接体３６の下側摺接部材３６ｂと第２摺接体３８との間に作用する摩擦力（相対移動力）よりも小さくされており、第２マーク４４に対する第１マーク４２の相対移動が発生することで支持能力低下が判断可能にされている。   The frictional force (relative movement force) acting between the slide body 34 and the upper sliding contact member 36 a of the first sliding contact 36 when the support capability of the support mechanism 32 is normal is the lower side of the first sliding contact 36. The frictional force (relative movement force) acting between the sliding contact member 36b and the second sliding contact body 38 is made smaller, and the support capability is achieved by the relative movement of the first mark 42 with respect to the second mark 44. Decrease can be judged.

また、本実施形態では、上側摺接部材３６ａは、外周部から下方へ延び出す規制部３６ａｒを有している。下側摺接部材３６ｂは、規制部３６ａｒの内側に位置して外周側が規制部３６ａｒの内周側に当接している。この構成により、下側摺接部材３６ｂの長手方向Ｕの移動が規制部３６ａｒによって規制されており、また、下側摺接部材３６ｂの交換作業が簡単になっている。   In the present embodiment, the upper sliding contact member 36a has a restricting portion 36ar that extends downward from the outer peripheral portion. The lower slidable contact member 36b is located inside the restricting portion 36ar, and the outer peripheral side is in contact with the inner peripheral side of the restricting portion 36ar. With this configuration, the movement of the lower slidable contact member 36b in the longitudinal direction U is restricted by the restricting portion 36ar, and the replacement work of the lower slidable contact member 36b is simplified.

（作用、効果）
以下、本実施形態の作用、効果を説明する。支持機構３２の支持能力が正常であるときには、上述したように、スライド体３４と第１摺接体３６の上側摺接部材３６ａとの間に作用する摩擦力は、第１摺接体３６の下側摺接部材３６ｂと第２摺接体３８との間に作用する摩擦力よりも小さくされている。従って、スライド体３４が長手方向Ｕにスライド移動したとき、スライド体３４と第１摺接体３６との相対移動は生じ、第１摺接体３６と第２摺接体３８との相対移動は生じない。よって、第１マーク４２と第２マーク４４との相対移動は生じず、第１マーク４２と第２マーク４４とが一直線状に位置した状態が保たれる。 (Function, effect)
Hereinafter, the operation and effect of the present embodiment will be described. When the support capability of the support mechanism 32 is normal, as described above, the frictional force acting between the slide body 34 and the upper slide contact member 36a of the first slide contact body 36 is generated by the first slide contact body 36. The frictional force acting between the lower sliding contact member 36b and the second sliding contact body 38 is made smaller. Therefore, when the slide body 34 slides in the longitudinal direction U, the relative movement between the slide body 34 and the first sliding contact body 36 occurs, and the relative movement between the first sliding contact body 36 and the second sliding contact body 38 occurs. Does not occur. Therefore, relative movement between the first mark 42 and the second mark 44 does not occur, and the state where the first mark 42 and the second mark 44 are positioned in a straight line is maintained.

第１摺接体３６の上面側が摩耗することにより劣化などの不具合が生じると、スライド体３４と上側摺接部材３６ａとの間に作用する摩擦力（相対移動力）が増大する。そして、この摩擦力が下側摺接部材３６ｂと第２摺接体３８との間に作用する摩擦力（相対移動力）よりも大きくなると、スライド体３４が長手方向Ｕにスライド移動したとき、第１摺接体３６と第２摺接体３８との相対移動が生じる。   When a defect such as deterioration occurs due to wear of the upper surface side of the first sliding contact body 36, a frictional force (relative movement force) acting between the slide body 34 and the upper sliding contact member 36a increases. And when this frictional force becomes larger than the frictional force (relative movement force) acting between the lower sliding contact member 36b and the second sliding contact body 38, when the slide body 34 slides in the longitudinal direction U, A relative movement between the first sliding contact 36 and the second sliding contact 38 occurs.

この結果、第２マーク４４に対して第１マーク４２が離れる方向に相対移動する（図２（ｂ）参照）。このように相対移動したことが可視化されているので、作業員や検査員などが、目視により、支持機構３２の支持能力が低下した（支持能力異常となった）と判断することができる。そして、第１摺接体３６を未使用のものに交換する。なお、第１摺接体３６のうち上側摺接部材３６ａのみを交換して下側摺接部材３６ｂはそのまま利用することも可能である。   As a result, the first mark 42 moves relative to the second mark 44 in a direction away from the second mark 44 (see FIG. 2B). Since the relative movement is visualized in this manner, an operator, an inspector, or the like can visually determine that the support capability of the support mechanism 32 has decreased (support capability has become abnormal). Then, the first sliding contact 36 is replaced with an unused one. It is also possible to replace only the upper sliding contact member 36a of the first sliding contact 36 and use the lower sliding contact member 36b as it is.

従って、本実施形態により、第１摺接体３６の劣化による交換が必要である（すなわち、支持能力異常が生じている）と判断するにあたり、従来のように詳細な計測をすることが不要になり、また、損傷等が生じて初めて交換が必要であると気付く事態も回避することができる。   Therefore, according to the present embodiment, it is not necessary to perform detailed measurement as in the prior art when determining that replacement due to deterioration of the first sliding contact body 36 is necessary (that is, an abnormality in support capability has occurred). In addition, it is possible to avoid a situation in which it is noticed that replacement is necessary only after damage or the like occurs.

また、第１摺接体３６が、第２摺接体３８に対して長手方向Ｕに相対移動しても、規制部３６ａｒと第２摺接体３８との当接によってこの相対移動が停止される。従って、この相対移動を簡易な構造で停止させることができる。   Even if the first sliding contact body 36 moves relative to the second sliding contact body 38 in the longitudinal direction U, the relative movement is stopped by the contact between the restricting portion 36ar and the second sliding contact body 38. The Therefore, this relative movement can be stopped with a simple structure.

なお、本実施形態では、スライド体３４と支持体４０との間に第１摺接体３６と第２摺接体３８とが設けられた２重構造の例で説明したが、更に摺接体を増やした多重構造（３重構造以上）とすることも可能である。   In the present embodiment, an example of a double structure in which the first sliding contact body 36 and the second sliding contact body 38 are provided between the slide body 34 and the support body 40 has been described. It is also possible to have a multiple structure (more than triple structure) with an increased number.

また、本実施形態では、スライド移動可能な部材の一例としてスライド体３４を挙げ、スライド方向がスライド体３４の長手方向である例で説明したが、スライド方向がスライド体３４の長手方向以外の方向にも適用可能であり、また、スライド体３４以外の他のスライド移動可能な部材にも適用可能である。   In the present embodiment, the slide body 34 is given as an example of the slide movable member, and the slide direction is the longitudinal direction of the slide body 34. However, the slide direction is a direction other than the longitudinal direction of the slide body 34. In addition, the present invention can also be applied to other slidable members other than the slide body 34.

＜対比検討例＞
図３は、従来の支持機構で、（ａ）は使用中であることを示す説明図、（ｂ）は回転軸部材とブッシュとが互いに局部的に溶着して回転支持能力の低下を招き、使用に支障が生じたことを示す説明図である。 <Comparison study example>
FIG. 3 is a conventional support mechanism, (a) is an explanatory view showing that it is in use, (b) is a result that the rotating shaft member and the bush are locally welded to each other, resulting in a decrease in rotational support capability. It is explanatory drawing which shows that the trouble occurred in use.

従来の支持機構８２は、回転軸部材８４（回転軸部材１４と同様のもの）と、回転軸部材８４の外周側に接触して回転軸部材８４からの荷重を支えるブッシュ８７と、ブッシュ８７の外周側に接触してブッシュ８７からの荷重を支える支持体９０とを備えている。支持体９０はハウジングとしての機能も有している。   The conventional support mechanism 82 includes a rotating shaft member 84 (similar to the rotating shaft member 14), a bush 87 that contacts the outer peripheral side of the rotating shaft member 84 and supports a load from the rotating shaft member 84, And a support 90 that supports the load from the bush 87 in contact with the outer peripheral side. The support 90 also has a function as a housing.

この支持機構８２では、ブッシュ８７が劣化することによって支持能力が低下しても、作業員や検査員が目視で判断することができない。従って、支持機構８２の分解整備時に摩耗状態を調べることや、回転軸部材８４の回転抵抗を計測することなどを行うことによって支持能力の低下を判断する必要がある。また、図３（ｂ）に示すように、回転軸部材８４とブッシュ８７とが互いに局部的に溶着して支障が生じて初めて交換が必要であると気付く事態もあり得る。   In this support mechanism 82, even if the support capability is reduced due to deterioration of the bush 87, an operator or an inspector cannot visually determine. Therefore, it is necessary to determine the decrease in the support capability by examining the wear state during disassembly and maintenance of the support mechanism 82, measuring the rotational resistance of the rotary shaft member 84, and the like. In addition, as shown in FIG. 3B, there may be a situation in which the rotation shaft member 84 and the bush 87 are locally welded to each other, and it is noticed that the replacement is necessary only when trouble occurs.

一方、第１実施形態で説明した支持機構１２では、検知機構１０が設けられており、インナーブッシュ１６が劣化することによって支持能力が低下すると、インナーブッシュ１６がアウターブッシュ１８に対し、回転軸部材１４の回転方向に相対移動する（図１（ｂ）参照）。すなわち、第２マーク２４に対して第１マーク２２が離れる方向に相対移動するので、作業員や検査員などが、目視により、支持機構１２の支持能力が低下したと簡単に判断することができる。   On the other hand, in the support mechanism 12 described in the first embodiment, the detection mechanism 10 is provided, and when the support capability is reduced due to deterioration of the inner bush 16, the inner bush 16 has a rotating shaft member with respect to the outer bush 18. 14 relative to the rotational direction (see FIG. 1B). That is, since the first mark 22 moves relative to the second mark 24 in a direction away from the first mark 24, an operator, an inspector, or the like can easily determine that the support capability of the support mechanism 12 has decreased visually. .

以上、第１、第２実施形態を挙げて本発明の実施の形態を説明したが、これらの実施形態は、この発明の技術的思想を具体化するための例示であって、この発明の実施の形態は、構成部品の材質、形状、構造、配置等を上記のものに特定するものではない。この発明の実施の形態は、要旨を逸脱しない範囲内で種々変更して実施できる。   The embodiments of the present invention have been described with reference to the first and second embodiments. However, these embodiments are examples for embodying the technical idea of the present invention, and the embodiments of the present invention are described. This form does not specify the material, shape, structure, arrangement, or the like of the component parts as described above. The embodiments of the present invention can be implemented with various modifications without departing from the scope of the invention.

例えば、支持機構全般、軸受全般、免震装置全般で、特に変形や摺動によって作動するものに適用可能である。   For example, the present invention can be applied to general support mechanisms, bearings, and seismic isolation devices, particularly those that operate by deformation or sliding.

また、マーク（第１マーク、第２マーク）を付けずに、レーザスペックル法やセンサに等によって上述の相対移動を検出しても良い。   Further, the relative movement described above may be detected by a laser speckle method, a sensor, or the like without attaching marks (first mark, second mark).

また、可動体が球面体であり、第１支持体が球面体の表面側に隣接する第１隣接部材であり、第２支持体が第１隣接部材に隣接する第２隣接部材である場合にも、同様の効果を奏することができる。   When the movable body is a spherical body, the first support is a first adjacent member adjacent to the surface side of the spherical body, and the second support is a second adjacent member adjacent to the first adjacent member. The same effect can be achieved.

１０ 検知機構
１２ 支持機構
１４ 回転軸部材（可動体）
１６ インナーブッシュ（第１支持体）
１８ アウターブッシュ（第２支持体）
２０ 支持体
２２ 第１マーク（相対移動検出手段）
２４ 第２マーク（相対移動検出手段）
３０ 検知機構
３２ 支持機構
３４ スライド体（スライド体、可動体）
３６ 第１摺接体（第１支持体）
３６ａ 上側摺接部材
３６ｂ 下側摺接部材
３８ 第２摺接体（第２支持体）
４０ 支持体
４２ 第１マーク（相対移動検出手段）
４４ 第２マーク（相対移動検出手段）
８２ 支持機構
８４ 回転軸部材
８７ ブッシュ
９０ 支持体
Ｇ すべり支承 DESCRIPTION OF SYMBOLS 10 Detection mechanism 12 Support mechanism 14 Rotating shaft member (movable body)
16 Inner bush (first support)
18 Outer bush (second support)
20 Support 22 First mark (relative movement detecting means)
24 Second mark (relative movement detection means)
30 Detection mechanism 32 Support mechanism 34 Slide body (slide body, movable body)
36 1st sliding contact body (1st support body)
36a Upper sliding contact member 36b Lower sliding contact member 38 Second sliding contact body (second support)
40 Support body 42 1st mark (relative movement detection means)
44 Second mark (relative movement detection means)
82 Support mechanism 84 Rotating shaft member 87 Bush 90 Support G Slide support

Claims (6)

可動体からの荷重を支える第１支持体と、
前記第１支持体からの荷重を支える第２支持体と、
前記第１支持体と前記第２支持体との相対移動を検出する相対移動検出手段と、
で構成され、
支持能力正常時に前記可動体と前記第１支持体との間に作用する相対移動力は、前記第１支持体と前記第２支持体との間に作用する相対移動力よりも小さくされており、
支持能力異常時には、前記相対移動が生じたことを前記相対移動検出手段で検出可能であることを特徴とする検知機構。 A first support for supporting a load from the movable body;
A second support for supporting a load from the first support;
A relative movement detecting means for detecting a relative movement between the first support and the second support;
Consists of
The relative movement force acting between the movable body and the first support body when the support capability is normal is made smaller than the relative movement force acting between the first support body and the second support body. ,
A detection mechanism characterized in that the relative movement detection means can detect that the relative movement has occurred when the supporting ability is abnormal. 前記可動体がスライド移動可能なスライド体であり、
前記第１支持体が、前記スライド体を摺動可能なように下側から支える第１摺接体であり、
前記第２支持体が、前記第１摺接体を摺動可能なように下側から支える第２摺接体であることを特徴とする請求項１に記載の検知機構。 The movable body is a slide body capable of sliding;
The first support body is a first sliding contact body that supports the slide body from below so as to be slidable;
The detection mechanism according to claim 1, wherein the second support body is a second sliding contact body that supports the first sliding contact body from below so as to be slidable. 前記スライド体が長尺状であり、
前記第１摺接体は、
前記スライド体が長手方向に摺動可能となるように下側から摺接する上側摺接部材と、
前記上側摺接部材の下側に着脱自在に固定され、前記第２摺接体に対して下面側で前記長手方向に摺動可能なように摺接する下側摺接部材と、
で構成されることを特徴とする請求項２に記載の検知機構。 The slide body is elongated,
The first sliding contact body is:
An upper slidable contact member that slidably contacts from below so that the slide body can slide in the longitudinal direction;
A lower slidable contact member that is detachably fixed to the lower side of the upper slidable contact member and is slidably contacted with the second slidable contact member in the longitudinal direction on the lower surface side;
The detection mechanism according to claim 2, comprising: 前記スライド体が橋桁を構成し、前記第１摺接体と前記第２摺接体とがすべり支承を構成することを特徴とする請求項３に記載の検知機構。   The detection mechanism according to claim 3, wherein the slide body constitutes a bridge girder, and the first sliding contact body and the second sliding contact body constitute a sliding bearing. 前記可動体が回転軸部材であり、
前記第１支持体が前記回転軸部材の外周側に隣接するインナーブッシュであり、
前記第２支持体が前記インナーブッシュの外周側に隣接するアウターブッシュであることを特徴とする請求項１に記載の検知機構。 The movable body is a rotating shaft member;
The first support is an inner bush adjacent to the outer peripheral side of the rotary shaft member;
The detection mechanism according to claim 1, wherein the second support is an outer bush adjacent to an outer peripheral side of the inner bush. 前記可動体が球面体であり、
前記第１支持体が前記球面体の表面側に隣接する第１隣接部材であり、
前記第２支持体が前記第１隣接部材に隣接する第２隣接部材であることを特徴とする請求項１に記載の検知機構。 The movable body is a spherical body;
The first support is a first adjacent member adjacent to the surface side of the spherical body;
The detection mechanism according to claim 1, wherein the second support is a second adjacent member adjacent to the first adjacent member.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110617909A (en) * 2019-10-17 2019-12-27 杭州传感器有限公司 Plane bearing capacity detection device and spherical support
CN112729635A (en) * 2021-02-20 2021-04-30 河北省建筑科学研究院有限公司 Computer-based real-time monitoring method for stress state of steel-concrete composite beam
KR102412193B1 (en) * 2021-10-18 2022-06-27 주식회사 신라이앤씨 Joint Gap Measuring Device for Bridge Safety Inspection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110617909A (en) * 2019-10-17 2019-12-27 杭州传感器有限公司 Plane bearing capacity detection device and spherical support
CN112729635A (en) * 2021-02-20 2021-04-30 河北省建筑科学研究院有限公司 Computer-based real-time monitoring method for stress state of steel-concrete composite beam
KR102412193B1 (en) * 2021-10-18 2022-06-27 주식회사 신라이앤씨 Joint Gap Measuring Device for Bridge Safety Inspection

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