JP2020066324A - Load-carrying platform sheet opening alarm apparatus - Google Patents
Load-carrying platform sheet opening alarm apparatus Download PDFInfo
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- JP2020066324A JP2020066324A JP2018199933A JP2018199933A JP2020066324A JP 2020066324 A JP2020066324 A JP 2020066324A JP 2018199933 A JP2018199933 A JP 2018199933A JP 2018199933 A JP2018199933 A JP 2018199933A JP 2020066324 A JP2020066324 A JP 2020066324A
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- 239000002184 metal Substances 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- 239000007769 metal material Substances 0.000 description 1
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- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
Description
本発明は、ダンプトラックの荷台シートが荷台の側板よりも外側に張り出している開放状態を通報する荷台シート開放警報装置に関する。 TECHNICAL FIELD The present invention relates to a cargo seat seat opening alarm device that reports an open state in which a cargo carrier seat of a dump truck is projected outward from a side plate of the cargo carrier.
ダンプトラックの荷台の側板上縁部には、荷台シートが取り付けられている。荷台シートは側板の前後方向を軸方向として、側板の外側に張り出して側板の外面に沿った開き位置と、荷台の内側に傾き荷台の開放上面を覆う閉じ位置との間で回転可能に支持される。この荷台シートは、運転席近辺に据え付けられた操作スイッチによりモータで開閉駆動されうる。荷台シートを閉じ位置に保持しておけば車両走行時に荷台内の積載土砂等が落下するのを効果的に防止することができ、また開き位置に保持しておけば、荷台内に土砂等を積み込む際に該荷台シートが作業の邪魔になるのを回避することができる（特許文献１、２）。 A cargo bed sheet is attached to the upper edge of the side plate of the cargo bed of the dump truck. The luggage carrier sheet is rotatably supported between the open position along the outer surface of the side plate with the front-back direction of the side plate as the axial direction and the open position that extends along the outer surface of the side plate and the closed position that tilts inside the carrier and covers the open upper surface of the carrier. It The luggage carrier seat can be opened and closed by a motor by an operation switch installed near the driver's seat. Keeping the loading platform seat in the closed position can effectively prevent the loaded sediment from falling inside the loading platform while the vehicle is running, and by keeping it in the open position, depositing soil in the loading platform. It is possible to avoid the loading base sheet from interfering with the work when loading (Patent Documents 1 and 2).
荷台シートの回転動作の際、例えば荷台シートが砂利などの障害物を噛み込んだりする場合など荷台シートの回転が阻害される状況が発生すると、モータの焼付き防止のためモータの電流が強制的に遮断され、荷台シートが正規の閉じ位置まで回転せずに停止するおそれがある。開き状態から閉動作の途中で荷台シートが回転停止する場合、運転席で操作スイッチにより閉動作のためのスイッチを操作した運転者は、正規の閉じ位置まで荷台シートが到達したかを確認することができない。逆の動作も同様にである。特に、荷台シートが側板の外側に張り出した状態（開放状態）で回転停止した場合は、荷台シートが車幅より拡がった状態になり、その状態でダンプトラックが走行した場合不測の事態を招くおそれもある。 When the load carrier sheet rotates, for example, when the load carrier sheet bites an obstacle such as gravel, if the rotation of the load carrier sheet is obstructed, the motor current is forced to prevent seizure of the motor. There is a risk that the cargo seat will stop without rotating to the proper closed position. If the luggage seat stops rotating from the open state during the closing operation, the driver who operated the switch for the closing operation with the operation switch in the driver's seat should check whether the luggage seat has reached the regular closing position. I can't. The reverse operation is also the same. In particular, if the luggage carrier seats hang outside the side plates (open condition) and rotation stops, the luggage carrier seats become wider than the width of the vehicle, and if the dump truck runs in that condition, an unexpected situation may result. There is also.
そこで、本発明の目的は、ダンプトラックの荷台シートが開放状態であることを検知し警報を発することができる荷台シート開放警報装置を提供することにある。 Therefore, an object of the present invention is to provide a cargo seat sheet opening alarm device capable of detecting that the cargo seat sheet of a dump truck is in an open state and issuing an alarm.
上記目的を達成するための本発明の荷台シート開放警報装置は、ダンプトラックの荷台の側板に取り付けられる荷台シートの側板外側への張り出しを検知する荷台シート開放警報装置であって、荷台シートの所定の回転範囲を特定するための特定用部材と、特定用部材との距離が所定長さ以内であることを検知する近接スイッチと、近接スイッチの出力に応じて、荷台シートの側板外側への張り出しを通報する警報ユニットとを備えることを特徴とする。 A cargo bed sheet opening warning device of the present invention for achieving the above object is a cargo bed sheet opening warning device for detecting an outward protrusion of a cargo bed sheet attached to a side board of a cargo bed of a dump truck, wherein Member for specifying the rotation range of the vehicle, a proximity switch for detecting that the distance between the member for identification is within a predetermined length, and an extension of the luggage carrier sheet to the outside of the side plate according to the output of the proximity switch. And an alarm unit for reporting.
好ましくは、荷台シートの回転軸は、当該回転軸を回転させるモータと同軸に連結し、荷台シートの回転軸端部のフランジ部と、当該モータの出力軸端部のフランジ部とが同軸に合わさっての連結部分を構成し、特定用部材は、当該連結部分の全周のうちの一部周面にわたって取り付けられる。所定の回転範囲は、荷台シートが側板外側に張り出す範囲に対応し、特定用部材は例えば金属板である。また、警報ユニットは、好ましくは、近接スイッチの出力に応じて音声を出力する音声出力部及び近接スイッチの出力に応じて点灯する点灯部を備える。 Preferably, the rotating shaft of the luggage carrier sheet is connected coaxially with the motor that rotates the rotating shaft, and the flange portion of the rotating shaft end portion of the luggage carrier sheet and the flange portion of the output shaft end portion of the motor are coaxially aligned. The connecting member constitutes all the connecting portions, and the specifying member is attached to a part of the entire circumference of the connecting portion. The predetermined rotation range corresponds to a range in which the luggage carrier sheet projects to the outside of the side plate, and the specifying member is, for example, a metal plate. Further, the alarm unit preferably includes a voice output unit that outputs a voice according to the output of the proximity switch and a lighting unit that lights up according to the output of the proximity switch.
本発明によれば、ダンプトラックの荷台シートが側板の外側に張り出している開放状態であることを検知し警報を発することができる。ダンプトラックの運転者がその状態に気づかずに走行することを未然に防止することで、ダンプトラックの安全走行が確保される。 According to the present invention, it is possible to detect that the cargo bed sheet of the dump truck is in an open state in which it is extended to the outside of the side plate and issue an alarm. By preventing the driver of the dump truck from traveling without noticing the state, safe driving of the dump truck is ensured.
以下、図面を参照して本発明の実施の形態について説明する。しかしながら、かかる実施の形態例が、本発明の技術的範囲を限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention.
図１は、本発明の荷台シート開放警報装置を搭載したダンプトラックを示す図であり、ダンプトラックの側面を表す。荷台シート開放警報装置は、後述する特定用部材（金属板）３１、近接スイッチ３２及び警報ユニット４０を備えて構成される。図１において、ダンプトラックの車体フレーム１には荷台２が傾動可能に軸支されており、この荷台２と車体フレーム１間には、荷台２を後方へ傾動させる既知の駆動機構（図示せず）が設けられる。また、荷台２の左右にある側板３の各上縁部には、荷台２の開放上面の左右両外側部をそれぞれ被覆し得る左右一対の荷台シート１０がそれぞれ取付けられる。この荷台シート１０は、布等のシート素材１１と、このシート素材１１を所定の長方形状に保持する方形枠状のシート枠１２とにより構成される。シート枠１２の１辺を形成する軸部１２ａは、左右の側板３の各上縁部に前後方向に沿って延びて取り付けられ、左右の側板３の各上縁部に前後両側に設けられる軸受１３によって回転自在に支持される。 FIG. 1 is a diagram showing a dump truck equipped with a bed seat opening warning device of the present invention, and shows a side surface of the dump truck. The bed seat opening warning device is configured to include a specifying member (metal plate) 31, a proximity switch 32, and a warning unit 40, which will be described later. In FIG. 1, a loading platform 2 is tiltably supported on a body frame 1 of a dump truck, and a known drive mechanism (not shown) for tilting the loading platform 2 backward is provided between the loading platform 2 and the body frame 1. ) Is provided. Further, a pair of left and right cargo bed sheets 10 capable of covering the left and right outer side portions of the open upper surface of the cargo bed 2 are attached to the respective upper edge portions of the side plates 3 on the left and right of the cargo bed 2. The luggage carrier sheet 10 includes a sheet material 11 such as a cloth and a square frame-shaped sheet frame 12 that holds the sheet material 11 in a predetermined rectangular shape. A shaft portion 12a forming one side of the seat frame 12 is attached to each upper edge portion of the left and right side plates 3 so as to extend along the front-rear direction, and is provided on both front and rear sides of each upper edge portion of the left and right side plates 3. It is rotatably supported by 13.
図２は、荷台シート１０の回転を説明する図である。シート枠１２の軸部１２ａには、荷台２の前側端部に取り付けられた電動モータ２０の出力軸が同軸に連結される。モータ２０を正方向へ回転駆動すると、荷台シート１０を、側板３の外側で側板３の上縁部から外面に沿って鉛直下方に垂下した方向に延びる開き位置（Ａ）から、側面３の上縁部から水平外向きに延びる中間水平位置（Ｂ）と、側面３の上縁部より鉛直上方に起立する中間起立位置（Ｃ）を経て、側板３の内側で側板３の上縁部から水平内向きに延びる閉じ位置（Ｄ）まで閉駆動させることができ、反対に、電動モータ２０を逆方向へ回転駆動すると、上記の逆方向に荷台シート１０を開駆動させることができる。 FIG. 2 is a diagram illustrating the rotation of the luggage carrier sheet 10. An output shaft of an electric motor 20 attached to a front end of the luggage carrier 2 is coaxially connected to the shaft portion 12a of the seat frame 12. When the motor 20 is rotationally driven in the forward direction, the luggage carrier sheet 10 moves from the open position (A) extending vertically downward along the outer surface from the upper edge portion of the side plate 3 to the side surface 3 above the side plate 3. After the intermediate horizontal position (B) extending horizontally outward from the edge and the intermediate standing position (C) standing vertically upward from the upper edge of the side surface 3, the horizontal position from the upper edge of the side plate 3 is increased inside the side plate 3. The loading seat 10 can be driven to close to the closed position (D) extending inward, and conversely, when the electric motor 20 is driven to rotate in the opposite direction, the luggage carrier sheet 10 can be driven to open in the opposite direction.
図３は、本発明の荷台シート開放警報装置における荷台シートの回転範囲を検知する構成を示す図であり、図３（ａ）は側面から見た概略構成図、図３（ｂ）は正面から見た概略構成図である。左右の荷台シート１０に対してそれぞれ設けられる。シート枠１２の軸部１２ａは、荷台２の前側端部に取付けたモータ２０の出力軸と同軸に連結されており、より具体的には、シート枠１２の軸部１２ａの前端フランジ部１２ｂと、モータ２０の出力軸２０ａの先端フランジ部２０ｂとが同軸に合わさって連結部分３０を構成している。両フランジ部が円盤状であれば連結部分３０も円盤状となり、周面が形成される。この連結部分３０の周面に沿って扇型状に形成された金属板３１が、連結部分３０の全周のうちの一部周面にわたって取り付けられる。金属板３１は、後述する近接スイッチ３２により近接するように連結部分３０の径よりも大きい径を有するように形成され、連結部分３０のフランジ同士を連結させるボルト３３を利用して、連結部分３０に対して固定された位置に取り付けられる。金属板３１は、連結部分３０の全周のうちの一部周面を近接スイッチ３２に検知させるため、すなわち荷台シートの回転範囲を特定するため特定用部材であり、ステンレス板など各種金属材料を採用可能であり、また、金属板に限らず、近接スイッチ３２により荷台シート１０の回転範囲を特定可能とする種々の形状、構造、材料を採用しうる。 3A and 3B are views showing a configuration for detecting the rotation range of the luggage carrier sheet in the luggage carrier sheet opening alarm device of the present invention, FIG. 3A is a schematic configuration diagram seen from the side, and FIG. 3B is a front view. It is the schematic block diagram seen. It is provided for each of the left and right luggage carrier sheets 10. The shaft portion 12a of the seat frame 12 is coaxially connected to the output shaft of the motor 20 attached to the front end of the luggage carrier 2, and more specifically, the shaft end portion 12a of the shaft portion 12a of the seat frame 12 and the front end flange portion 12b. The end flange portion 20b of the output shaft 20a of the motor 20 is coaxially combined to form the connecting portion 30. If both flange portions are disc-shaped, the connecting portion 30 is also disc-shaped and the peripheral surface is formed. The metal plate 31 formed in a fan shape along the peripheral surface of the connecting portion 30 is attached over a part of the entire peripheral surface of the connecting portion 30. The metal plate 31 is formed to have a diameter larger than that of the connecting portion 30 so as to be closer to the proximity switch 32, which will be described later, and a bolt 33 for connecting the flanges of the connecting portion 30 is used to connect the connecting portion 30. Mounted in a fixed position with respect to. The metal plate 31 is a specifying member for causing the proximity switch 32 to detect a part of the entire circumference of the connecting portion 30, that is, for specifying the rotation range of the luggage carrier sheet, and is made of various metal materials such as a stainless plate. In addition to the metal plate, various shapes, structures, and materials that can specify the rotation range of the luggage carrier sheet 10 by the proximity switch 32 can be adopted.
さらに、連結部分３０の近傍には、近接スイッチ３２が配置される。近接スイッチ３２は、近傍の物体を非接触で検知するセンサであり、誘導型近接スイッチ、静電容量型近接スイッチ、超音波型近接スイッチ、光電型近接スイッチなど既知のスイッチを用いることができる。近接スイッチ３２は、荷台２ではないダンプトラックの車体部分（例えばサイドパネル）に固定して取り付けられ、荷台シート１０の回転に伴う連結部分３０の回転に応じて、金属板３１との距離が所定長さ以内に近接した場合に検知信号を出力する。 Further, a proximity switch 32 is arranged near the connecting portion 30. The proximity switch 32 is a sensor that detects a nearby object in a non-contact manner, and a known switch such as an inductive proximity switch, a capacitance proximity switch, an ultrasonic proximity switch, or a photoelectric proximity switch can be used. The proximity switch 32 is fixedly attached to a vehicle body portion (for example, a side panel) of the dump truck that is not the loading platform 2, and has a predetermined distance from the metal plate 31 according to the rotation of the connecting portion 30 accompanying the rotation of the loading platform sheet 10. A detection signal is output when approaching within the length.
図４は、連結部分３０に取り付けられる金属板３１及びその近傍に配置される近接スイッチ３２の図３に対応する実際の構成例を示す写真である。 FIG. 4 is a photograph showing an actual configuration example corresponding to FIG. 3 of the metal plate 31 attached to the connecting portion 30 and the proximity switch 32 arranged in the vicinity thereof.
図５は、連結部分３０に取り付けられた金属板３１の別の構成例を示す図である。金属板３１を断面Ｌ字形状として、好ましくはＬ字の折れ曲がり部分（周面方向に幅を有する部分）が連結部分３０の周面から突出するように配置される。近接スイッチ３２との距離を連結部分３０の周面に対して異ならせることができる。図５に示す金属板３１は、図３の構成と比較して、金属板３１を肉薄にできるとともに、近接スイッチ３２の検知のための幅を確保することができ、コストも有利である。 FIG. 5 is a diagram showing another configuration example of the metal plate 31 attached to the connecting portion 30. The metal plate 31 has an L-shaped cross section and is preferably arranged such that a bent portion (a portion having a width in the circumferential surface direction) of the L shape projects from the circumferential surface of the connecting portion 30. The distance from the proximity switch 32 can be different from the peripheral surface of the connecting portion 30. The metal plate 31 shown in FIG. 5 is thinner than the metal plate 31 shown in FIG. 3, the width for detecting the proximity switch 32 can be secured, and the cost is advantageous.
図６は、近接スイッチ３２の検知信号ＯＮ／ＯＦＦタイミングを示す図である。近接スイッチ３２が金属板３１の接近を検知する範囲は、荷台シート１０が図２における開き位置（Ａ）から中間水平位置（Ｂ）を経て中間起立位置（Ｃ）までの範囲であり、これは荷台シート１０が側板３より外側に張り出している状態（開放状態）である。荷台シート１０がこの範囲に位置する場合に近接スイッチ３２が検知信号を出力するように、金属板３１と近接スイッチ３２の取り付け位置が調整される。 FIG. 6 is a diagram showing the detection signal ON / OFF timing of the proximity switch 32. The proximity switch 32 detects the approach of the metal plate 31 from the open position (A) of FIG. 2 through the intermediate horizontal position (B) to the intermediate standing position (C) of the luggage carrier sheet 10. This is a state (open state) in which the luggage carrier sheet 10 projects outward from the side plate 3. The mounting positions of the metal plate 31 and the proximity switch 32 are adjusted so that the proximity switch 32 outputs a detection signal when the luggage seat 10 is located in this range.
図７は、本発明の荷台シート開放警報装置における警報ユニット４０の構成を示す図であり、図７（ａ）はその内部構成及び図７（ｂ）はその外観構成例を示す図である。警報ユニット４０は、ダンプトラックの運転手が視認可能にダンプトラックの運転席の近傍に配置される。警報ユニット４０には、近接スイッチ３２の検知信号が入力される。 FIG. 7 is a diagram showing the configuration of the alarm unit 40 in the luggage carrier seat opening alarm device of the present invention, FIG. 7 (a) is its internal configuration, and FIG. 7 (b) is its external configuration example. The alarm unit 40 is arranged near the driver's seat of the dump truck so that the driver of the dump truck can visually recognize it. The detection signal of the proximity switch 32 is input to the alarm unit 40.
警報ユニット４０は、近接スイッチ３２と配線により接続し、近接スイッチ３２からの検知信号が入力されると、音声出力部４１による音声出力及び点灯部（左側点灯部及び右側点灯部）４２によるランプ点灯が行われ、荷台シート１０の位置に対する警報が出力される。すなわち、荷台シート１０が、図２における開き位置Ａから中間水平位置Ｂを経て中間起立位置Ｃまでの範囲に位置する間は、警報が出力されることになる。図７の構成例では、点灯による警報は、左右識別可能に点灯し、音声による警報は、左右の少なくとも一方が開放状態において出力される。 The alarm unit 40 is connected to the proximity switch 32 by wiring, and when the detection signal from the proximity switch 32 is input, the sound output by the sound output unit 41 and the lamp lighting by the lighting unit (left lighting unit and right lighting unit) 42. Then, an alarm for the position of the luggage carrier sheet 10 is output. That is, while the luggage carrier sheet 10 is located in the range from the open position A to the intermediate horizontal position B to the intermediate standing position C in FIG. 2, an alarm is output. In the configuration example of FIG. 7, the alarm by lighting is lit so that the left and right can be distinguished, and the audio alarm is output when at least one of the left and right is open.
このように、荷台シート１０が左右それぞれの側板３より外側に張り出した位置にある場合に警報が出力される構成とすることにより、運転者は、荷台シート１０が側板３より内側に閉じているかどうかを運転席にて確認することができる。運転者の遠隔操作による荷台シート１０の閉動作の途中に荷台シート１０の回転が停止した場合であっても、荷台シート１０が側板３より外側に張り出していることを検知し、警報が出力される。運転者は、再度の閉動作のための操作を行うなど対処可能となり、安全性が担保される。 As described above, by providing the configuration in which the alarm is output when the luggage carrier sheet 10 is located outside the left and right side plates 3, the driver determines whether the luggage carrier sheet 10 is closed inward of the side plates 3. You can check it from the driver's seat. Even when the rotation of the luggage carrier sheet 10 is stopped during the closing operation of the luggage carrier sheet 10 by the remote operation of the driver, it is detected that the luggage carrier sheet 10 is projected to the outside of the side plate 3, and an alarm is output. It The driver can take measures such as performing an operation for closing again, thus ensuring safety.
本発明は、上記実施の形態に限定されるものではなく、本発明の分野における通常の知識を有する者であれば想到し得る各種変形、修正を含む要旨を逸脱しない範囲の設計変更があっても、本発明に含まれることは勿論である。 The present invention is not limited to the above-mentioned embodiments, and there are design changes within the scope including various variations and modifications that can be conceived by a person having ordinary knowledge in the field of the present invention. Needless to say, it is included in the present invention.
１：車体フレーム、２：荷台、３：側板、１０：荷台シート、１１：シート素材、１２：シート枠、２０：モータ、３０：連結部分、３１：金属板、３２：近接スイッチ、４０：警報ユニット 1: Body frame, 2: Packing board, 3: Side plate, 10: Packing board seat, 11: Seat material, 12: Seat frame, 20: Motor, 30: Connection part, 31: Metal plate, 32: Proximity switch, 40: Alarm unit
上記目的を達成するための本発明の荷台シート開放警報装置は、ダンプトラックの荷台の側板に取り付けられる荷台シートの側板外側への張り出しを検知する荷台シート開放警報装置であって、荷台シートの所定の回転範囲を特定するための特定用部材と、特定用部材との距離が所定長さ以内であることを検知する近接スイッチと、近接スイッチの出力に応じて、荷台シートの側板外側への張り出しを通報する警報ユニットとを備え、荷台シートの回転軸は、当該回転軸を回転させるモータと同軸に連結し、荷台シートの回転軸端部のフランジ部と、当該モータの出力軸端部のフランジ部とが同軸に合わさっての連結部分を構成し、特定用部材は、当該連結部分の全周のうちの一部周面にわたって取り付けられ、所定の回転範囲は、荷台シートが側板外側に張り出す範囲に対応する範囲であることを特徴とする。 A cargo bed sheet opening warning device of the present invention for achieving the above object is a cargo bed sheet opening warning device for detecting an outward protrusion of a cargo bed sheet attached to a side board of a cargo bed of a dump truck, wherein Member for specifying the rotation range of the vehicle, a proximity switch that detects that the distance between the member and the identifying member is within a predetermined length, and an extension of the luggage carrier sheet to the outside of the side plate according to the output of the proximity switch. The rotating shaft of the luggage carrier seat is coaxially connected to the motor for rotating the rotating machinery, and the flange portion of the rotating shaft end portion of the luggage carrier seat and the flange of the output shaft end portion of the motor are provided. And the part form a connecting portion coaxially with each other, the specifying member is attached over a part of the entire peripheral surface of the connecting portion, and the predetermined rotation range is limited to the cargo bed seal. There characterized in that it is a range corresponding to a range overhanging side plates outward.
好ましくは、特定用部材は例えば金属板である。また、警報ユニットは、好ましくは、近接スイッチの出力に応じて音声を出力する音声出力部及び近接スイッチの出力に応じて点灯する点灯部を備える。 Preferably, JP titration, member is a metal sheet, for example. Further, the alarm unit preferably includes a voice output unit that outputs a voice according to the output of the proximity switch and a lighting unit that lights up according to the output of the proximity switch.
Claims (6)
前記荷台シートの所定の回転範囲を特定するための特定用部材と、
前記特定用部材との距離が所定長さ以内であることを検知する近接スイッチと、
前記近接スイッチの出力に応じて、前記荷台シートの側板外側への張り出しを通報する警報ユニットとを備えることを特徴とする荷台シート開放警報装置。 A load carrier seat opening alarm device for detecting an outward protrusion of a load carrier seat attached to a side plate of a load carrier of a dump truck,
A specifying member for specifying a predetermined rotation range of the luggage carrier sheet,
A proximity switch that detects that the distance to the specifying member is within a predetermined length,
An alarm unit for opening a cargo bed sheet, comprising: an alarm unit that reports the extension of the cargo seat sheet to the outside of the side plate according to the output of the proximity switch.
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