JP2015101465A - Bucket weight measurement device - Google Patents

Bucket weight measurement device Download PDF

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JP2015101465A
JP2015101465A JP2013244699A JP2013244699A JP2015101465A JP 2015101465 A JP2015101465 A JP 2015101465A JP 2013244699 A JP2013244699 A JP 2013244699A JP 2013244699 A JP2013244699 A JP 2013244699A JP 2015101465 A JP2015101465 A JP 2015101465A
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bucket
weight
wire
measuring device
attached
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JP6203612B2 (en
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広樹 松本
Hiroki Matsumoto
広樹 松本
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Hitachi Plant Mechanics Co Ltd
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Hitachi Plant Mechanics Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a bucket weight measurement device in which height of a crab trolley can be made low, and weight is saved, and measurement accuracy of bucket weight can be enhanced, and capable of exhibiting a sensor function of control of a bucket posture and bias of loads.SOLUTION: A center of a suspension metal fitting 5 is suspended by a wire 3 for measuring bucket weight of a bucket 2 attached to the wire 3 for winding up and down of the bucket 2 via the suspension metal fitting 5, and pin-type load cells 61, 62 are disposed on both ends of the suspension metal fitting 5, and the bucket 2 is attached with two load cells 61, 62 serving as support shafts.

Description

本発明は、巻き上げ下げを行うワイヤに吊り金具を介して取り付けられたバケットのバケット重量測定装置に関するものである。   The present invention relates to a bucket weight measuring device for a bucket attached to a wire to be rolled up and down via a hanging fitting.

従来、巻き上げ下げを行うワイヤに吊り金具を介して取り付けられたバケットのバケット重量を測定するために、（ａ）クラブトロリの台車上に、バケットの巻き上げ下げを行うワイヤの巻き取りドラム等のバケット操作用機器を載置した基台を、ロードセルを介して取り付け、バケット操作用機器を含むバケット機構全体の重量を測定する方式（例えば、特許文献１参照。）や、（ｂ）バケットの巻き上げ下げを行うワイヤにかかるバケット自体の重量（積み荷の重量を含む。以下、本明細書において同じ。）をロードセルにより測定する方式（例えば、特許文献２及び３参照。）等、種々の方式のバケット重量測定装置が提案され、実用化されている。   Conventionally, in order to measure the bucket weight of a bucket attached to a wire to be wound up and down via a suspension fitting, (a) a bucket such as a winding drum of a wire for lifting and lowering the bucket on a cart of a club trolley A method of measuring the weight of the entire bucket mechanism including the bucket operation device by attaching a base on which the operation device is placed (see, for example, Patent Document 1), and (b) lifting and lowering the bucket The weight of the bucket itself (including the weight of the cargo; hereinafter the same in this specification) is measured by a load cell (for example, see Patent Documents 2 and 3). A measuring device has been proposed and put into practical use.

ところで、上記従来のバケット重量測定装置のうち、（ａ）方式のバケット重量測定装置は、クラブトロリの台車上にバケット操作用機器を載置した基台をロードセルを介して取り付けるものであるため、クラブトロリの車高が高くなり、また、重量も大きくなるという問題や、基台に設置したバケット操作用機器を含むバケット機構全体の重量を測定するものであるため、ロードセルの感度を上げることが困難で、測定されるバケット重量の測定精度が低いという問題があった。
一方、（ｂ）方式のバケット重量測定装置は、バケット自体の重量を測定することができるため、（ａ）方式のバケット重量測定装置と比較して、クラブトロリの車高を低く、また、重量も軽量にでき、さらに、バケット重量の測定精度を高めることができるという利点を有するものであった。 By the way, among the conventional bucket weight measuring devices described above, the (a) bucket weight measuring device is for attaching a base on which a bucket operating device is mounted on a cart of a club trolley via a load cell. It increases the vehicle height of the club trolley and increases the weight, and it measures the weight of the entire bucket mechanism including the bucket operation equipment installed on the base, thus increasing the sensitivity of the load cell. There was a problem that the measurement accuracy of the bucket weight to be measured was difficult.
On the other hand, since the bucket weight measuring device of (b) method can measure the weight of the bucket itself, the vehicle height of the club trolley is lower than the bucket weight measuring device of (a) method, and the weight is also reduced. Can also be reduced in weight, and has the advantage that the accuracy of measuring the bucket weight can be increased.

特開２００４−１０７０３５号公報JP 2004-107035 A 特開平５−２１５３１８号公報JP-A-5-215318 特開平５−１８６１８２号公報JP-A-5-186182

ところで、（ｂ）方式のバケット重量測定装置は、バケット重量の測定精度を高めることができるという利点を有するものであるが、バケット重量の測定以外の機能、具体的には、バケットの姿勢や積み荷の偏りの制御のセンサ機能を有するものではなかった。   By the way, although the bucket weight measuring apparatus of (b) system has the advantage that the accuracy of measuring the bucket weight can be improved, functions other than the bucket weight measurement, specifically, the posture of the bucket and the load It did not have a sensor function for controlling the bias.

本発明は、上記従来のバケット重量測定装置の有する問題点に鑑み、クラブトロリの車高を低く、また、重量も軽量にでき、さらに、バケット重量の測定精度を高めることができるという利点を有するとともに、バケットの姿勢や積み荷の偏りの制御のセンサ機能を発揮し得るバケット重量測定装置を提供することを目的とする。   In view of the problems of the conventional bucket weight measuring device, the present invention has the advantages that the height of the club trolley can be reduced, the weight can be reduced, and the accuracy of measuring the bucket weight can be increased. Another object of the present invention is to provide a bucket weight measuring device capable of exhibiting a sensor function for controlling the attitude of the bucket and the load bias.

上記目的を達成するため、本発明のバケット重量測定装置は、バケットの巻き上げ下げを行うワイヤに吊り金具を介して取り付けられたバケットのバケット重量測定装置において、吊り金具の中心をワイヤにより吊り下げるようにするとともに、吊り金具の両端部にピン型ロードセルを設け、該ロードセルを支持軸としてバケットを取り付けるようにしたことを特徴とする。   In order to achieve the above object, a bucket weight measuring device of the present invention is a bucket weight measuring device for a bucket attached to a wire for lifting and lowering a bucket via a hanging bracket so that the center of the hanging bracket is suspended by the wire. In addition, a pin type load cell is provided at both ends of the suspension fitting, and a bucket is attached using the load cell as a support shaft.

この場合において、ロードセルの出力をバケットに設けた無線送信機を介して地上側に設けた無線受信機に送信するようにすることができる。   In this case, the output of the load cell can be transmitted to a radio receiver provided on the ground side via a radio transmitter provided in the bucket.

本発明のバケット重量測定装置によれば、バケットの巻き上げ下げを行うワイヤに吊り金具を介して取り付けられたバケットのバケット重量測定装置において、吊り金具の中心をワイヤにより吊り下げるようにするとともに、吊り金具の両端部にピン型ロードセルを設け、該ロードセルを支持軸としてバケットを取り付けるようにすることにより、クラブトロリの車高を低く、また、重量も軽量にでき、さらに、バケット自体の重量を測定することができるため、バケット重量の測定精度を高めることができるとともに、吊り金具の両端部に設けたピン型ロードセルの出力値を、バケットの姿勢や積み荷の偏りの制御に用いることができる。   According to the bucket weight measuring device of the present invention, in the bucket weight measuring device for the bucket attached to the wire for lifting and lowering the bucket via the hanging bracket, the center of the hanging bracket is suspended by the wire and suspended. By installing a pin-type load cell at both ends of the bracket and attaching the bucket using the load cell as a support shaft, the vehicle height of the club trolley can be lowered and the weight can be reduced, and the weight of the bucket itself is measured. Therefore, the measurement accuracy of the bucket weight can be increased, and the output values of the pin type load cells provided at both ends of the suspension fitting can be used for controlling the attitude of the bucket and the load bias.

また、ロードセルの出力をバケットに設けた無線送信機を介して地上側に設けた無線受信機に送信するようにすることにより、ロードセルから出力される微弱信号を地上側の制御装置に正確に伝達し、バケットの制御を正確に行うことができる。   Moreover, the weak signal output from the load cell is accurately transmitted to the control device on the ground side by transmitting the output of the load cell to the radio receiver provided on the ground side via the wireless transmitter provided on the bucket. Thus, the bucket can be accurately controlled.

本発明のバケット重量測定装置の一実施例を示し、（ａ）はクラブトロリの正面図、（ｂ）は同側面図、（ｃ）はバケットの正面図、（ｄ）は（ｃ）のＡ部の断面図である。1 shows an embodiment of a bucket weight measuring apparatus according to the present invention, in which (a) is a front view of a club trolley, (b) is a side view thereof, (c) is a front view of the bucket, and (d) is A of (c). It is sectional drawing of a part. 同バケット重量測定装置のシステム構成図である。It is a system configuration figure of the bucket weight measuring device.

以下、本発明のバケット重量測定装置の実施の形態を、ごみ処理工場用自動クレーンの例に基づいて説明する。   Hereinafter, an embodiment of a bucket weight measuring device of the present invention will be described based on an example of an automatic crane for a waste disposal factory.

図１〜図２に示すように、このバケット重量測定装置は、クラブトロリ１の台車１１上に、バケット２の巻き上げ下げを行うワイヤ３の巻き取りドラム１２、バケット２に給電を行う給電ケーブル４のケーブルリール１３等のバケット操作用機器を載置するようにし、さらに、バケット２の巻き上げ下げを行うワイヤ３に吊り金具５を介して取り付けられたバケット２のバケット重量を測定するために、吊り金具５の中心をワイヤ３により吊り下げるようにするとともに、吊り金具５の両端部にピン型ロードセル６１、６２を設け、これら２個のロードセル６１、６２を支持軸としてバケット２を取り付けるようにしたものである。   As shown in FIGS. 1 to 2, the bucket weight measuring device includes a take-up drum 12 for a wire 3 for lifting and lowering the bucket 2 and a feeding cable 4 for feeding power to the bucket 2 on a cart 11 of the club trolley 1. In order to measure the bucket weight of the bucket 2 attached to the wire 3 for lifting and lowering the bucket 2 via the hanging metal fitting 5, the bucket operating device such as the cable reel 13 is placed. The center of the metal fitting 5 is suspended by the wire 3, and pin type load cells 61, 62 are provided at both ends of the metal fitting 5, and the bucket 2 is attached using the two load cells 61, 62 as support shafts. Is.

この場合において、ロードセル６１、６２は、ピン形状をし、バケット重量によってピンに生じる剪断変形をひずみゲージにより検出し、出力するようにしたものである。   In this case, the load cells 61 and 62 are formed in a pin shape, and the shear deformation generated in the pin due to the bucket weight is detected and output by a strain gauge.

そして、ロードセル６１、６２の出力を、バケット２に設置した変換器箱７内に設けた信号増幅器、マイコン及び無線送信機を介して、地上側に設置した制御盤内に設けた無線受信機に送信するようにすることにより、ロードセル６１、６２から出力される微弱信号を地上側のクレーン制御装置に正確に伝達し、バケット２の制御を正確に行うことができるようにしている。   And the output of the load cells 61 and 62 is sent to the radio receiver provided in the control panel installed on the ground side via the signal amplifier, the microcomputer and the radio transmitter provided in the converter box 7 installed in the bucket 2. By transmitting, the weak signal output from the load cells 61 and 62 is accurately transmitted to the crane control device on the ground side, so that the bucket 2 can be controlled accurately.

ここで、バケット２には、バケット２の制御を行うために、ロードセル６１、６２のほか、必要に応じて、３軸加速度センサ、転倒センサ、油温センサ等の各種センサを設けることができる。   Here, in order to control the bucket 2, the bucket 2 can be provided with various sensors such as a triaxial acceleration sensor, a fall sensor, and an oil temperature sensor as needed in addition to the load cells 61 and 62.

そして、このバケット重量測定装置は、クラブトロリ１の台車１１上に、バケット操作用機器を直接載置するようにしているので、クラブトロリ１の車高を低く、また、重量も軽量にでき、さらに、バケット自体の重量を測定することができるため、バケット重量の測定精度を高めることができる。
さらに、吊り金具５の両端部に設けたロードセル６１、６２のそれぞれ出力値を対比することによって、バケット２の着床時等の姿勢（転倒）や積み荷（ごみの掴み量）の偏りのセンシングを行い、これらの制御に用いることができ、バケット重量の測定精度を高めることができることと相俟って、クレーンの自動運転におけるバケット２の制御の安定性を向上することができる。 And since this bucket weight measuring device is designed to place the device for bucket operation directly on the cart 11 of the club trolley 1, the vehicle height of the club trolley 1 can be lowered and the weight can be reduced. Furthermore, since the weight of the bucket itself can be measured, the measurement accuracy of the bucket weight can be increased.
Furthermore, by comparing the output values of the load cells 61 and 62 provided at both ends of the hanging bracket 5, it is possible to sense the posture of the bucket 2 when it is landed (falling) and the deviation of the load (the amount of garbage). This can be used for these controls, and in combination with the ability to increase the accuracy of bucket weight measurement, the stability of control of the bucket 2 in automatic crane operation can be improved.

以上、本発明のバケット重量測定装置について、その実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   As mentioned above, although the bucket weight measuring device of the present invention was explained based on the example, the present invention is not limited to the composition indicated in the above-mentioned example, and the composition is suitably changed in the range which does not deviate from the meaning. It can be changed.

本発明のバケット重量測定装置は、クラブトロリの車高を低く、また、重量も軽量にでき、さらに、バケット重量の測定精度を高めることができるという利点を有するとともに、バケットの姿勢や積み荷の偏りの制御のセンサ機能を発揮し得るものであることから、ごみ処理工場用自動クレーンのバケットの重量測定の用途のほか、各種クレーンのバケットの重量測定の用途に好適に用いることができる。   The bucket weight measuring device of the present invention has the advantages that the height of the club trolley can be reduced, the weight can be reduced, and the accuracy of measuring the bucket weight can be increased. Therefore, it can be suitably used for the purpose of measuring the weight of buckets of various cranes, as well as for measuring the weights of buckets of various cranes.

１ クラブトロリ
１１ 台車
１２ 巻き取りドラム
１３ ケーブルリール
２ バケット
３ ワイヤ
４ 給電ケーブル
５ 吊り金具
６１ ロードセル
６２ ロードセル
７ 変換器箱 DESCRIPTION OF SYMBOLS 1 Club trolley 11 Cart 12 Winding drum 13 Cable reel 2 Bucket 3 Wire 4 Feeding cable 5 Hanging bracket 61 Load cell 62 Load cell 7 Converter box

Claims (2)

バケットの巻き上げ下げを行うワイヤに吊り金具を介して取り付けられたバケットのバケット重量測定装置において、吊り金具の中心をワイヤにより吊り下げるようにするとともに、吊り金具の両端部にピン型ロードセルを設け、該ロードセルを支持軸としてバケットを取り付けるようにしたことを特徴とするバケット重量測定装置。   In the bucket weight measuring device of the bucket attached to the wire for lifting and lowering the bucket via the hanging fitting, the center of the hanging fitting is suspended by the wire, and pin type load cells are provided at both ends of the hanging fitting, A bucket weight measuring device characterized in that a bucket is attached using the load cell as a support shaft. ロードセルの出力をバケットに設けた無線送信機を介して地上側に設けた無線受信機に送信するようにしたことを特徴とする請求項１記載のバケット重量測定装置。   2. The bucket weight measuring device according to claim 1, wherein the output of the load cell is transmitted to a radio receiver provided on the ground side via a radio transmitter provided in the bucket.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215318A (en) * 1991-09-30 1993-08-24 Kubota Corp Refuse disposal equipment
JP2009052977A (en) * 2007-08-24 2009-03-12 Hitachi Plant Technologies Ltd Load cell and load lifting method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215318A (en) * 1991-09-30 1993-08-24 Kubota Corp Refuse disposal equipment
JP2009052977A (en) * 2007-08-24 2009-03-12 Hitachi Plant Technologies Ltd Load cell and load lifting method

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