JP3299355B2 - Load measuring device - Google Patents
Load measuring deviceInfo
- Publication number
- JP3299355B2 JP3299355B2 JP25261393A JP25261393A JP3299355B2 JP 3299355 B2 JP3299355 B2 JP 3299355B2 JP 25261393 A JP25261393 A JP 25261393A JP 25261393 A JP25261393 A JP 25261393A JP 3299355 B2 JP3299355 B2 JP 3299355B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- load plate
- support member
- waterproof member
- measuring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Force In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は荷重測定装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load measuring device.
【０００２】[0002]
【従来の技術】従来の荷重測定装置としては、特開昭６
２−３４０２７号公報、特開昭６２−４２０２４号公
報、特開昭６３−１１７２２４号公報等に記載のものが
知られている。これらはいずれも支持部材が梁を介して
荷重板を浮かせた状態で支持する構造であり、測定場所
に設置するとき支持部材の底面が地面や床面に接地し、
この状態で荷重板は梁を介して地面等から浮いた状態と
なる。荷重板に荷重がかかると梁に歪みが生じ、この歪
み量を梁に取付けた歪ゲージ等の手段で検出し、検出さ
れた歪み量から荷重を計算する。このような測定装置を
屋外で使用するとき、降雨時には歪ゲージ等の検出手段
が濡れてしまい、検出精度が悪くなる。そこで、従来は
支持部材と荷重板との間を薄い金属板で覆って雨水が検
出手段を濡らさないようにしていた。金属板は両面テー
プや溶接等の手段で支持部材と荷重板とに取付けられて
いた。2. Description of the Related Art A conventional load measuring device is disclosed in
JP-A-2-34027, JP-A-62-42024, JP-A-63-117224 and the like are known. Each of these is a structure in which the support member supports the load plate in a floating state via the beam, and when installed at the measurement location, the bottom surface of the support member is in contact with the ground or the floor surface,
In this state, the load plate floats from the ground or the like via the beam. When a load is applied to the load plate, distortion occurs in the beam. The amount of distortion is detected by means such as a strain gauge attached to the beam, and the load is calculated from the detected amount of distortion. When such a measuring device is used outdoors, at the time of rainfall, the detecting means such as a strain gauge gets wet, and the detecting accuracy is deteriorated. Therefore, conventionally, the space between the support member and the load plate has been covered with a thin metal plate so that rainwater does not wet the detecting means. The metal plate has been attached to the support member and the load plate by means such as double-sided tape or welding.
【０００３】[0003]
【発明が解決しようとする課題】従来の防水手段では、
荷重板に荷重がかかったときに、薄い金属板が荷重板の
作動を妨げて悪影響を与えることもある。荷重板にかか
った荷重が梁の個所を歪ませるが、この歪み量が金属板
の有無により左右されるおそれがあった。また、ｘ方
向，ｙ方向等の分力を測定する場合は、金属板を設けた
ことにより出力に与える影響が極端に大きくなり、測定
不能になるおそれもあった。さらに、金属板に傷がつい
たり変形が生じたりし易く、商品価値を落とし、錆が発
生したり鍍金がはがれたりして防水不良を生起させるお
それもあった。In the conventional waterproof means,
When a load is applied to the load plate, the thin metal plate may interfere with the operation of the load plate and adversely affect the operation. Although the load applied to the load plate distorts the beam, the amount of distortion may be affected by the presence or absence of the metal plate. Further, when measuring the component force in the x direction, the y direction, or the like, the influence on the output becomes extremely large due to the provision of the metal plate, and there is a possibility that the measurement becomes impossible. Further, the metal plate is easily scratched or deformed, which lowers the commercial value, and may cause rusting or peeling of the plating to cause poor waterproofing.
【０００４】そこで、この発明は、測定精度を落とさ
ず、防水性に優れた荷重測定装置を提供することを目的
とする。[0004] Therefore, an object of the present invention is to provide a load measuring device which is excellent in waterproofness without lowering measurement accuracy.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、この発明は、支持部材が梁を介して荷重板を浮かせ
た状態で支持し、荷重板に荷重がかかり梁に歪みが生ず
るとき、この歪み量を測定して荷重を測定する装置であ
って、支持部材と荷重板との間に形成される隙間を覆う
ように、支持部材と荷重板とに凹凸嵌合して取付けた、
防水特性を有するゴム材料から成る防水部材を設け、こ
の防水部材の支持部材と荷重板とに挟まれた方向、すな
わち幅方向の中間に幅方向に伸縮する波状部を形成し、
この波状部を防水部材の長手方向の全長に形成したもの
である。In order to achieve the above-mentioned object, the present invention provides a supporting member which supports a load plate in a state of being lifted via a beam, and when a load is applied to the load plate and the beam is distorted. An apparatus for measuring the load by measuring the amount of strain, and fitted and fitted to the support member and the load plate so as to cover a gap formed between the support member and the load plate,
A waterproof member made of a rubber material having waterproof properties is provided, and a corrugated portion that expands and contracts in the width direction is formed in a direction between the support member and the load plate of the waterproof member, that is, in the middle of the width direction,
This wavy portion is formed over the entire length of the waterproof member in the longitudinal direction.
【０００６】[0006]
【作用】この発明では、防水部材に伸縮する波状部を形
成し、この波状部は防水部材の長手方向の全長に存在す
るので、荷重板に荷重がかかったときに荷重板の作動を
防げず、梁にかかる歪みも荷重板にかかる荷重に正確に
応じて生起されることとなる。この歪み量は歪ゲージ等
の検出手段により検出されるが、これら検出手段は防水
部材で覆われ、雨水等から保護される。According to the present invention, a wavy portion which expands and contracts is formed on the waterproof member, and the wavy portion exists over the entire length in the longitudinal direction of the waterproof member. Therefore, when a load is applied to the load plate, the operation of the load plate cannot be prevented. Also, the strain applied to the beam is also generated exactly according to the load applied to the load plate. The amount of distortion is detected by detecting means such as a strain gauge, and these detecting means are covered with a waterproof member and protected from rainwater and the like.
【０００７】[0007]
【実施例】以下に、この発明の好適な実施例を図面を参
照にして説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.
【０００８】図１に示す第１の実施例では、支持部材１
が梁２を介して荷重板３を浮かせた状態で支持し、荷重
板３に荷重がかかり梁２に歪みが生ずるとき、この歪み
量を歪ゲージ４で検出して荷重を測定する。支持部材１
と荷重板３の上面には係合溝１Ａ，３Ａが形成してあ
り、これら係合溝１Ａ，３Ａに防水部材５の両側に形成
された突起５Ａが係合する。防水部材５は支持部材１と
荷重板３との間に形成される隙間６を覆うように設けて
ある。防水部材５の支持部材１と荷重板３とに挟まれた
方向、すなわち幅方向の中間に幅方向に伸縮する波状部
５Ｂを形成してある。また、この波状部５Ｂは防水部材
５の長手方向の全長に形成してある。In the first embodiment shown in FIG.
Supports the load plate 3 in a floating state via the beam 2. When a load is applied to the load plate 3 and the beam 2 is distorted, the amount of distortion is detected by the strain gauge 4 to measure the load. Support member 1
On the upper surface of the load plate 3, engagement grooves 1A, 3A are formed, and the projections 5A formed on both sides of the waterproof member 5 are engaged with these engagement grooves 1A, 3A. The waterproof member 5 is provided so as to cover a gap 6 formed between the support member 1 and the load plate 3. A corrugated portion 5B that expands and contracts in the width direction is formed in the direction between the support member 1 and the load plate 3 of the waterproof member 5, that is, in the middle of the width direction. The wavy portion 5B is formed over the entire length of the waterproof member 5 in the longitudinal direction.
【０００９】図２は第１の実施例の全体を示す平面図で
あり、中央部分に荷重板３が存在し、この荷重板３を取
り囲むようにその外周に支持部材１が存在する。梁２は
荷重板３と支持部材１とをつなぐように設けてある。FIG. 2 is a plan view showing the whole of the first embodiment. A load plate 3 is provided at a central portion, and a support member 1 is provided around the load plate 3 so as to surround the load plate 3. The beam 2 is provided so as to connect the load plate 3 and the support member 1.
【００１０】歪ゲージ４には一定の電圧が印加されてい
て、荷重板３に荷重が作用すると各歪ゲージ４から出力
される電圧の総和の平均値が増幅器で増幅されて出力さ
れ、これを図示しない表示器でデジタル表示するように
なっている。A constant voltage is applied to the strain gauge 4, and when a load acts on the load plate 3, the average value of the sum of the voltages output from each strain gauge 4 is amplified by an amplifier and output. Digital display is performed by a display (not shown).
【００１１】図３は防水部材５を下面側から見た底面図
であり、荷重板３の荷重面が露出するに足る大きさの孔
が中央に形成された長方形状のものであり、内周縁と外
周縁とに突起５Ａが形成され、幅方向の中央には波状部
５Ｂが形成されている。防水部材５を形成する材料とし
てはシリコーンゴム等のゴム材料が好適であり、他に合
成樹脂材料あるいはその複合材料も使用できる。シリコ
ーンゴムのガス透過性は他の有機ゴムやプラスチック類
に比べてきわめて大きい。その透過率は、２７０×１０
-9ml／ｓ・ｍ・Paである。また、防水性はあるがガスを
透過するようなシリコーンゴム以外の材料も用いること
ができる。防水性を有しガス透過性を備えた防水部材５
である場合、外部の温度変化等により内部圧力が変化し
た場合でも歪ゲージ４が設けられた内部と外部との圧力
差をなくすことができ、また防水部材５の接着部に歪み
を与えることもない。また、係合溝１Ａ，３Ａには予め
接着剤を塗布しておき、ここに防水部材５の突起５Ａを
係合させる。FIG. 3 is a bottom view of the waterproof member 5 viewed from the lower surface side. The waterproof member 5 has a rectangular shape with a hole large enough to expose the load surface of the load plate 3 and has an inner peripheral edge. A projection 5A is formed on the outer peripheral edge and a wavy portion 5B is formed at the center in the width direction. As a material for forming the waterproof member 5, a rubber material such as silicone rubber is suitable, and a synthetic resin material or a composite material thereof can also be used. The gas permeability of silicone rubber is much higher than other organic rubbers and plastics. Its transmittance is 270 × 10
-9 ml / smPa . Further, a material other than silicone rubber, which is waterproof but permeable to gas, can also be used. Waterproofing member 5 having waterproofness and gas permeability
In this case, even when the internal pressure changes due to an external temperature change or the like, the pressure difference between the inside where the strain gauge 4 is provided and the outside can be eliminated, and distortion can be given to the bonding portion of the waterproof member 5. Absent. An adhesive is applied to the engagement grooves 1A and 3A in advance, and the projection 5A of the waterproof member 5 is engaged with the adhesive.
【００１２】図４に示す第２の実施例は荷重板３と支持
部材１との間に形成される隙間６が上面ではなく側周面
に形成された荷重測定装置における防水部材５の取付け
例を示すものである。この荷重測定装置は、図５に示す
ように荷重板３の中央部下面に脚部３Ｂが設けてあり、
この脚部３Ｂが梁２を介して支持部材１に接続されてい
る。また、支持部材１の側周面には係止溝１Ａが形成さ
れ、荷重板３の側周面にも係止溝３Ａが形成してある。
これら係止溝１Ａ，３Ａに防水部材５の突起５Ａを係合
させる。The second embodiment shown in FIG. 4 is an example of mounting the waterproof member 5 in a load measuring device in which a gap 6 formed between the load plate 3 and the support member 1 is formed not on the upper surface but on the side peripheral surface. It shows. In this load measuring device, as shown in FIG. 5, a leg 3B is provided on the lower surface of the center of the load plate 3,
The leg 3B is connected to the support member 1 via the beam 2. A locking groove 1A is formed on the side peripheral surface of the support member 1, and a locking groove 3A is also formed on the side peripheral surface of the load plate 3.
The projections 5A of the waterproof member 5 are engaged with the locking grooves 1A and 3A.
【００１３】[0013]
【発明の効果】以上説明したように、この発明によれ
ば、支持部材と荷重板との間に形成される隙間を覆うよ
うに防水部材を設け、この防水部材の支持部材と荷重板
とに挟まれた方向、すなわち幅方向の中間に幅方向に伸
縮する波状部を形成し、この波状部を防水部材の長手方
向の全長に形成したので、荷重板に荷重が作用したとき
に、防水部材の波状部が伸縮し荷重板に影響を与えるこ
とがない。そのため荷重板にかかった荷重は梁の個所で
正確な歪みとして検出される。また、隙間が防水部材で
覆われるために歪ゲージ等の検出手段が保護され雨水に
濡れて検出不良を来すおそれはない。As described above, according to the present invention, the waterproof member is provided so as to cover the gap formed between the support member and the load plate, and the support member of the waterproof member and the load plate are provided. In the sandwiched direction, that is, in the middle of the width direction, a wavy portion that expands and contracts in the width direction is formed, and this wavy portion is formed over the entire length in the longitudinal direction of the waterproof member, so that when a load acts on the load plate, the waterproof member The wavy portion does not expand and contract and does not affect the load plate. Therefore, the load applied to the load plate is detected as an accurate strain at the beam. Further, since the gap is covered with the waterproof member, the detecting means such as a strain gauge is protected, and there is no possibility that the detecting means may be wet due to rainwater and cause a detection failure.
【図１】この発明の第１実施例を示す断面図。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図２】平面図。FIG. 2 is a plan view.
【図３】防水部材の下側から見た底面図。FIG. 3 is a bottom view as viewed from below the waterproof member.
【図４】第２実施例を示す部分的斜視図。FIG. 4 is a partial perspective view showing a second embodiment.
【図５】第２実施例における防水部材取付け前の断面
図。FIG. 5 is a sectional view of a second embodiment before a waterproof member is attached.
１ 支持部材 ２ 梁 ３ 荷重板 ５ 防水部材 ５Ｂ 波状部 ６ 隙間 DESCRIPTION OF SYMBOLS 1 Support member 2 Beam 3 Load plate 5 Waterproof member 5B Wavy part 6 Gap
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−133320（ＪＰ，Ａ) 特開 昭59−112239（ＪＰ，Ａ) 実開 平４−94533（ＪＰ，Ｕ) 実開 昭63−31349（ＪＰ，Ｕ) 実開 平１−118328（ＪＰ，Ｕ) 実公 昭50−15505（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) G01G 21/30 G01G 23/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-133320 (JP, A) JP-A-59-112239 (JP, A) JP-A-4-94533 (JP, U) JP-A-63 31349 (JP, U) Japanese Utility Model 1-118328 (JP, U) Japanese Utility Model 50-15505 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) G01G 21/30 G01G 23 / 00
Claims (3)
状態で支持し、荷重板に荷重がかかり梁に歪みが生ずる
とき、この歪み量を測定して荷重を測定する装置であっ
て、 支持部材と荷重板との間に形成される隙間を覆うよう
に、支持部材と荷重板とに凹凸嵌合して取付けた、防水
特性を有するゴム材料から成る防水部材を設け、 この防水部材の支持部材と荷重板とに挟まれた方向、す
なわち幅方向の中間に幅方向に伸縮する波状部を形成
し、 この波状部を防水部材の長手方向の全長に形成したこと
を特徴とする荷重測定装置。1. An apparatus for measuring a load by supporting a load plate in a state of being floated via a beam, and when a load is applied to the load plate to cause distortion in the beam, the amount of distortion is measured. The waterproof member is fitted to the support member and the load plate by fitting the protrusion and recess so as to cover a gap formed between the support member and the load plate.
A waterproof member made of a rubber material having characteristics is provided, and a wavy portion that expands and contracts in the width direction is formed in a direction sandwiched between the support member of the waterproof member and the load plate, that is, in the middle of the width direction. A load measuring device formed over the entire length of the member in the longitudinal direction.
と荷重板とに凹凸嵌合して取付けられることを特徴とす
る請求項１に記載の荷重測定装置。2. The load measuring device according to claim 1, wherein both ends in the width direction of the waterproof member are fitted to the support member and the load plate, respectively, so as to be unevenly fitted.
ことを特徴とする請求項１又は２に記載の荷重測定装
置。3. The load measuring device according to claim 1 , wherein the rubber material is a silicone rubber .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25261393A JP3299355B2 (en) | 1993-09-14 | 1993-09-14 | Load measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25261393A JP3299355B2 (en) | 1993-09-14 | 1993-09-14 | Load measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0783737A JPH0783737A (en) | 1995-03-31 |
| JP3299355B2 true JP3299355B2 (en) | 2002-07-08 |
Family
ID=17239809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25261393A Expired - Fee Related JP3299355B2 (en) | 1993-09-14 | 1993-09-14 | Load measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3299355B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011022140A (en) * | 2009-06-18 | 2011-02-03 | Nihon Univ | Load test method and damage detection method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015505Y1 (en) * | 1970-06-10 | 1975-05-14 | ||
| JPS59112239A (en) * | 1982-11-18 | 1984-06-28 | Kyowa Dengiyou:Kk | Load transducer |
| JPS60133320A (en) * | 1983-12-22 | 1985-07-16 | Ishida Scales Mfg Co Ltd | Load detector |
| JPS6331349U (en) * | 1986-08-14 | 1988-02-29 | ||
| JPH0336895Y2 (en) * | 1988-01-29 | 1991-08-05 | ||
| JP2523910Y2 (en) * | 1990-12-27 | 1997-01-29 | 株式会社共和電業 | Cover for sealing the strain transducer of the load transducer |
-
1993
- 1993-09-14 JP JP25261393A patent/JP3299355B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0783737A (en) | 1995-03-31 |
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