JP3771700B2 - Weigh scale for weighing vehicles - Google Patents

Weigh scale for weighing vehicles Download PDF

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Publication number
JP3771700B2
JP3771700B2 JP35612797A JP35612797A JP3771700B2 JP 3771700 B2 JP3771700 B2 JP 3771700B2 JP 35612797 A JP35612797 A JP 35612797A JP 35612797 A JP35612797 A JP 35612797A JP 3771700 B2 JP3771700 B2 JP 3771700B2
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JP
Japan
Prior art keywords
weighing
beams
load
vehicle
metal plate
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
Application number
JP35612797A
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Japanese (ja)
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JPH11173903A (en
Inventor
達治 渡会
和明 浜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyowa Electronic Instruments Co Ltd
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Kyowa Electronic Instruments Co Ltd
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Filing date
Publication date
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Priority to JP35612797A priority Critical patent/JP3771700B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は車両重量を計量する重量計に関し、特に言えば、ひずみゲ−ジを用いて車両の重量を計量する重量計に係るものである。
【0002】
【従来の技術】
ひずみゲ−ジを使用した車両重量を計量する重量計としては、荷重板とこれを囲む囲い部と、この間に指し渡された梁部と、からなり、梁部の側面にひずみゲ−ジを接着した構造のものがある。図5はその平面図であり、図6はひずみゲ−ジの接着個所を示す簡略断面図である。
【0003】
かかる重量計における荷重板11、囲い部12、梁部13は、通常は鉄、アルミニウム、ジュラルミン等の一枚の金属板より構成され、これを切削加工して長径の孔14を形成し、これによって必要な数の梁部13を造ることとなる。
【0004】
しかるに、車両の積載重量は法律で定められており、重量計もこれに即した計量ができるものが採用されるが、トラックやトレ−ラ−等にあっては積載重量が守られないケ−スがあり、このような車両が重量計上に乗り上げると計量値に比較的大きな誤差を生じてしまう。この原因は重量計の梁部に配置されたひずみゲ−ジに対し、荷重が偏心した状態で計量されたり、設置面との圧力のかかり方に異常をもたらすためである。
【0005】
【発明が解決しようとする課題】
本発明は係る過積載車両の重量の計量にも適用できるようにひずみゲ−ジの配置、即ち梁部の配置を変更してこれに対処したものであり、過積載の場合であっても車両重量を精確に計量できる重量計を提供するものである。
【0006】
【課題を解決するための手段】
本発明は上記の課題を解決するためになされたものであって、その要旨は、車両の乗り込み及び乗り下り部を備えた荷重の係る金属板と、これを囲む囲い部と、この両者間に渡る複数の梁部を備え、この梁部にひずみゲ−ジを接着して金属板上にかかる荷重を計量する重量計であって、梁の数を乗り上げ及び乗り下り部及び中心部に密度を高くして配置し、かつ中心部に配置された梁を細径とし、乗り上げ及び乗り下り部の梁を太径としたことを特徴とする車両重量を計量する重量計に係るものである。
【0007】
【発明の実施の形態】
本発明にあっては重量計上への車両の乗り上げ及び乗り下り時の衝撃に対処するために梁の配置数を多くしたものであり、更に中心部の荷重点の荷重に対するために梁の配置数を中心部に集中したものである。
そして、荷重の計量に当って、中心荷重に比べて側部即ち乗り上げ及び乗り下り部の荷重の方が出力が大きくなる偏心誤差に対応するため、中心部における梁を細径とし、側部の梁を太径としてこれに対処するものである。尚、中心部の梁は荷重を受ける金属板の中心部に集中して備えるのが好ましいものである。
尚、梁の集中度(密度)及び梁の径の設定は予定される荷重によって、更には金属板の性状によってその都度設計されることは言うまでもない。
【0008】
本発明は、このように荷重の衝撃等による偏心誤差に対しても、計測される計量値に対してもひずみゲ−ジが接着される梁の数と配置を工夫したものであり、従来の重量計に比べてどちらかと言えば梁の数は多くなるものの、重量計として精確さが増し、更に全体としては薄くしかも軽くなり、持ちは運びや設置のし易さともなる。
【0009】
【実施例】
以下、本発明の重量計aを図面をもって更に詳細に説明する。
図1は本発明の計量予定重量5トン用のもので、基体となる金属板の平面図であり、図2はA−A線での断面図である。
図中、符号1は車両の乗り上げ及び乗り下り側の長さが550mm、幅は350mm、厚さ28mmのアルミニウム板である。そして、周囲に5mmの囲い部2をもって切削加工により孔3が形成されたものであり、乗り上げ側及び乗り下り側に夫々梁41 、51 が3個づつかつその側面にも2個の梁42 、52 が備えられ、合計5個の梁4、5をもって車両の乗り上げ及び乗り下り時の重量を夫々支持するものである。尚、金属板1には乗り上げ代7、乗り下り代8が夫々50mm備えられている。
【0010】
又、金属板1の中心部は内側にくびれており、ここに梁61 及びこの梁61 をはさんで梁62 が備えられ、左右で合計6個の梁6が主として重量の計量のために備えられている。尚、この例にあっては中央部にくびれを形成したが、これは特に必須の要件ではない。
【0011】
さて、通常は梁4、5、6の形成は前記したように金属板1を切削加工することによって孔5を形成されることとなるが、備えられた梁4、5、6の径が全て同一のものとした場合には、乗り上げ部及び乗り下り部の梁4、5におけるひずみゲ−ジの出力(荷重計測値)が大きく、中央部の梁6におけるひずみゲ−ジの出力(荷重計測値)は小さいという傾向となる。
従って、本発明における重量計aにあっては、夫々の区域の出力を同一にするため、梁4、5の径よりも中央部の梁6の径を小さくするものである。
【0012】
図3は切削加工によって形成された梁4、5、6の詳細図であり、梁4、5、6の中心部の厚さは15mm、この梁4、5、6を形成する孔部の直径は20mmであり、上縁が湾曲とされ、1mmの段部が形成されている。そして本発明にあっては梁4、5の径(中央部の幅W)を20.4mmとし、中心部の梁6の径(中央部の幅W)を19mmとすることによって課題を解決したものである。
尚、梁4、5、6の形状は特に限定はないことは勿論である。
【0013】
本発明にあっては、車両の前後4本のタイヤに対して4枚の重量計aを使用することとなるが、本発明はこれのみではなく、例えば、図4に示すように車両の後側タイヤに対し、左右に2枚、合計4枚の重量計aを配することもでき、これに対し傾斜板bを前後に配置する場合もある。
【0014】
【発明の効果】
本発明は偏心荷重に対する性能、床面上性能を向上させるために梁の配置、設置部の配置を工夫したことにより過積載車両の重量をも精確に計量できることとなったものである。
【図面の簡単な説明】
【図1】図1は本発明の重量計の基体となる金属板の平面図である。
【図2】図2は図1のA−A線での断面図である。
【図3】図3は梁の詳細図である。
【図4】図4は重量計の使用例を示す平面図である。
【図5】図5は従来の重量計の平面図である。
【図6】図6はひずみゲ−ジの接着個所を示す簡略断面図である。
【符号の説明】
a‥‥重量計、
1‥‥荷重を受ける金属板、
2‥‥囲い部、
3‥‥切削加工孔、
4、41 、42 、5、51 、52 ‥‥乗り上げ側及び乗り下り側の梁、
6、61 、62 ‥‥中心部の梁、
7‥‥乗り上げ代、
8‥‥乗り下り代、
W‥‥梁の径(中央部の幅)。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a weighing scale for weighing a vehicle, and more particularly to a weighing scale for weighing a vehicle using a strain gauge.
[0002]
[Prior art]
A weighing scale that measures the weight of a vehicle using a strain gauge is composed of a load plate, an enclosure surrounding the load plate, and a beam portion pointed between them. The strain gauge is attached to the side surface of the beam portion. There is a bonded structure. FIG. 5 is a plan view thereof, and FIG. 6 is a simplified cross-sectional view showing a bonded portion of the strain gauge.
[0003]
The load plate 11, the enclosure portion 12, and the beam portion 13 in such a weighing scale are usually made of a single metal plate such as iron, aluminum, and duralumin, and are cut to form a long diameter hole 14. As a result, the necessary number of beam portions 13 are formed.
[0004]
However, the load weight of vehicles is stipulated by law, and weigh scales that can weigh according to this are adopted, but in trucks and trailers, the load weight is not protected. When such a vehicle rides on a weight register, a relatively large error occurs in the measured value. This is because the strain gauge disposed on the beam portion of the weighing scale is measured in a state where the load is decentered, or the pressure applied to the installation surface is abnormal.
[0005]
[Problems to be solved by the invention]
The present invention copes with this by changing the arrangement of strain gages, that is, the arrangement of the beam parts so that it can be applied to the weighing of the overloaded vehicle. A weight scale capable of accurately measuring the weight is provided.
[0006]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and the gist of the present invention is that a metal plate with a load including a vehicle entry / exit part, a surrounding part surrounding the metal plate, and a gap between the two metal parts. This is a weigh scale that has a plurality of crossing beam sections, and a strain gauge is attached to the beam sections to measure the load applied to the metal plate. The present invention relates to a weighing scale for measuring a vehicle weight, characterized in that a beam arranged at a height and having a small diameter in a beam arranged in a central portion and a beam in a climbing and a getting on / off portion have a large diameter.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the number of beams is increased in order to cope with the impact at the time of getting on and off the vehicle on the weight scale, and further, the number of beams is arranged to cope with the load at the center load point. Is concentrated in the center.
In measuring the load, in order to cope with the eccentricity error in which the output of the side portion, that is, the loading and unloading portions is larger than the center load, the beam in the central portion is made small in diameter, This is to deal with this with a beam having a large diameter. In addition, it is preferable that the central beam is concentrated on the central portion of the metal plate that receives the load.
Needless to say, the concentration (density) of the beam and the diameter of the beam are designed each time depending on the planned load and further on the properties of the metal plate.
[0008]
The present invention devised the number and arrangement of beams to which strain gauges are bonded to both the eccentricity error due to the impact of the load and the like as well as the measured value. Compared to the scale, the number of beams is rather large, but the accuracy of the scale is increased, and the overall scale is thinner and lighter, making it easier to carry and install.
[0009]
【Example】
Hereinafter, the weight scale a of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a plan view of a metal plate serving as a base for a planned weighing weight of 5 tons of the present invention, and FIG. 2 is a cross-sectional view taken along line AA.
In the figure, reference numeral 1 denotes an aluminum plate having a length of 550 mm, a width of 350 mm, and a thickness of 28 mm on the side of the vehicle. Then, a hole 3 is formed by cutting with a surrounding portion 2 having a diameter of 5 mm, and three beams 4 1 and 5 1 are provided on the ride side and the ride side, respectively, and two beams are provided on the side surface. 4 2 and 5 2 are provided, and a total of five beams 4 and 5 support the weight when the vehicle is on and off, respectively. The metal plate 1 is provided with a ride allowance 7 and a ride allowance 8 each of 50 mm.
[0010]
Also, the central portion of the metal plate 1 is constricted inwardly, where the beam 61 and the beam 6 2 are provided across the beam 61, a total of six beams 6 mainly weight weighing in right and left Be prepared for. In this example, a constriction is formed in the central portion, but this is not an essential requirement.
[0011]
Normally, the beams 4, 5, and 6 are formed by forming the holes 5 by cutting the metal plate 1 as described above, but the diameters of the provided beams 4, 5, and 6 are all the same. If they are the same, the strain gauge output (load measurement value) in the beams 4 and 5 at the climbing section and the climbing section is large, and the strain gauge output (load measurement) at the beam 6 at the center section is large. The value) tends to be small.
Therefore, in the weighing scale a according to the present invention, the diameter of the beam 6 in the central portion is made smaller than the diameter of the beams 4 and 5 in order to make the outputs of the respective areas the same.
[0012]
FIG. 3 is a detailed view of the beams 4, 5, 6 formed by cutting. The thickness of the center of the beams 4, 5, 6 is 15 mm, and the diameter of the hole forming the beams 4, 5, 6 is shown in FIG. Is 20 mm, the upper edge is curved, and a step portion of 1 mm is formed. In the present invention, the diameter of the beams 4 and 5 (width W of the central portion) is set to 20.4 mm, and the diameter of the beam 6 at the central portion (width W of the central portion) is set to 19 mm. Is.
Of course, the shape of the beams 4, 5, 6 is not particularly limited.
[0013]
In the present invention, four weighing scales a are used for the four tires on the front and rear sides of the vehicle. However, the present invention is not limited to this. For example, as shown in FIG. A total of four weight scales a can be arranged on the left and right sides of the side tire, and inclined plates b may be arranged on the front and rear sides.
[0014]
【The invention's effect】
In the present invention, the weight of the overloaded vehicle can be accurately measured by devising the arrangement of the beams and the arrangement of the installation portions in order to improve the performance against the eccentric load and the performance on the floor surface.
[Brief description of the drawings]
FIG. 1 is a plan view of a metal plate serving as a base of a weighing scale according to the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
FIG. 3 is a detailed view of a beam.
FIG. 4 is a plan view showing an example of use of a weigh scale.
FIG. 5 is a plan view of a conventional weighing scale.
FIG. 6 is a simplified cross-sectional view showing a bonded portion of a strain gauge.
[Explanation of symbols]
a ...... Weigh scale,
1. Metal plate that receives load,
2 ... enclosure,
3. Cutting hole,
4, 4 1 , 4 2 , 5, 5 1 , 5 2 ...
6, 6 1 , 6 2 ... Beams in the center,
7 ... Ride up,
8: Getting on and off,
W ... Diameter of the beam (width at the center).

Claims (2)

車両の乗り込み及び乗り下り部を備えた荷重の係る金属板と、これを囲む囲い部と、この両者間に渡る複数の梁部を備え、この梁部にひずみゲ−ジを接着して金属板上にかかる荷重を計量する重量計であって、梁の数を乗り上げ及び乗り下り部及び中心部に密度を高くして配置し、かつ中心部に配置された梁を細径とし、乗り上げ及び乗り下り部の梁を太径としたことを特徴とする車両重量を計量する重量計。A metal plate having a load for loading and unloading a vehicle, a surrounding enclosure, and a plurality of beam portions extending between the two, and a strain gage bonded to the beam portion to attach the metal plate It is a weighing scale that measures the load applied to the upper part, and places the number of beams on the climbing and descending parts and the central part with a high density, and the beam arranged in the central part has a small diameter, and the riding and riding A weighing scale for weighing a vehicle, characterized in that the beam of the descending part has a large diameter. 中心部の梁は中心部に集中して備えた請求項第1項記載の車両重量を計量する重量計。2. The weighing scale for weighing a vehicle according to claim 1, wherein the central beam is concentrated on the central portion.
JP35612797A 1997-12-08 1997-12-08 Weigh scale for weighing vehicles Expired - Fee Related JP3771700B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35612797A JP3771700B2 (en) 1997-12-08 1997-12-08 Weigh scale for weighing vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35612797A JP3771700B2 (en) 1997-12-08 1997-12-08 Weigh scale for weighing vehicles

Publications (2)

Publication Number Publication Date
JPH11173903A JPH11173903A (en) 1999-07-02
JP3771700B2 true JP3771700B2 (en) 2006-04-26

Family

ID=18447475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35612797A Expired - Fee Related JP3771700B2 (en) 1997-12-08 1997-12-08 Weigh scale for weighing vehicles

Country Status (1)

Country Link
JP (1) JP3771700B2 (en)

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Publication number Publication date
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