JP2009174418A - Urea water tank - Google Patents

Urea water tank Download PDF

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JP2009174418A
JP2009174418A JP2008013691A JP2008013691A JP2009174418A JP 2009174418 A JP2009174418 A JP 2009174418A JP 2008013691 A JP2008013691 A JP 2008013691A JP 2008013691 A JP2008013691 A JP 2008013691A JP 2009174418 A JP2009174418 A JP 2009174418A
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tank body
urea water
tank
stainless steel
surface portion
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Yasuhiro Hashimoto
康広 橋本
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Tokyo Radiator Mfg Co Ltd
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Tokyo Radiator Mfg Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a urea water tank easily forming or attaching components such as a water filling opening and a pipe/sensor unit, facilitating machining of a tank body, and easily adjusting capacity of the tank in accordance with the required amount of urea water stored. <P>SOLUTION: The tank body is so formed that a tank barrel member, a stainless steel component mounting plate and two stainless steel sideboards are welded or joined to each other by brazing. The tank barrel member includes a front surface portion, a bottom surface portion, a rear surface portion and an upper surface portion which are formed by longitudinally bending a rectangular stainless steel plate and has a gap between the front surface portion and the upper surface portion. The stainless steel component mounting plate is bridged over the gap of the tank barrel member, is formed with respective holes for mounting the pipe/sensor unit and a gauge for confirmation of quantity of urea water, and has an inclined plate portion having the water filling opening integrally formed perpendicularly to an inclined surface. Each of the two stainless steel sideboards is formed into a planar shape covering both the side portions of a square cylinder composed of the tank barrel member and component mounting plate, and includes a joining bent edge portion formed along a periphery. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、尿素ＳＣＲ（選択還元型触媒）システムにより排気ガス中の窒素酸化物（ＮＯｘ）を無害化するために車両に搭載される尿素水タンクの構造に関する。   The present invention relates to a structure of a urea water tank mounted on a vehicle for detoxifying nitrogen oxides (NOx) in exhaust gas by a urea SCR (selective reduction catalyst) system.

従来、ディーゼルエンジンなどの内燃機関において、排気ガス浄化技術の一つである尿素ＳＣＲシステムは、排気ガス中のＮＯｘと還元剤である尿素水とを触媒還元反応させ窒素酸化物を浄化し無害化するものである。その尿素水を貯蔵する尿素水タンクは、燃料タンクと同様に車両に搭載して使用される。   Conventionally, in an internal combustion engine such as a diesel engine, the urea SCR system, which is one of the exhaust gas purification technologies, purifies nitrogen oxides by making a catalytic reduction reaction between NOx in the exhaust gas and urea water as a reducing agent to make it harmless. To do. The urea water tank for storing the urea water is mounted on a vehicle and used in the same manner as the fuel tank.

特許文献１には、尿素水タンクのタンク本体に着脱可能に締結される上部エンドプレートに水位センサーを着脱可能に締結し、垂下される水位センサーの先端部にピンを取り付け、このピンをタンク本体底面に設けたブラケットの挿入孔に着脱可能に挿入して、振動に揺れにくく着脱を容易にした水位センサーの取付構造が記載されている。   In Patent Document 1, a water level sensor is detachably fastened to an upper end plate that is detachably fastened to a tank body of a urea water tank, and a pin is attached to a tip portion of a suspended water level sensor. A mounting structure for a water level sensor is described which is detachably inserted into an insertion hole of a bracket provided on the bottom surface and is not easily shaken by vibration and is easily attached and detached.

また、特許文献２には、タンク内部をセンサー類及びパイプ類を含む領域とその外の領域に分ける、凹凸を設けた仕切り部材を上下方向に設けたことにより、尿素水が凍結した氷塊の遊動を抑え、また、前記仕切り部材に所定の間隔で孔を設け、この孔の上縁外側に鉤状部を設け、下縁内側に斜め上向きに傾斜部を設けたことにより、氷塊を細かく割って、温度が高い仕切り部材の内側領域で効率良く溶かすことができるものが記載されている。   Further, Patent Document 2 discloses that an ice block in which urea water is frozen is provided by vertically providing a partition member with unevenness that divides the inside of a tank into a region including sensors and pipes and a region outside the region. In addition, the partition member is provided with holes at predetermined intervals, a bowl-like part is provided outside the upper edge of the hole, and an inclined part is provided obliquely upward inside the lower edge, so that the ice mass is finely broken. Moreover, what can be efficiently dissolved in the inner region of the partition member having a high temperature is described.

また、特許文献３には、タンク本体の幅広な側面に複数の凹部を設けてタンク本体の剛性を確保し耐震性、耐圧性を向上させ、また、温度管理用パイプをタンク底部及び測定用配管の側面近傍に配設するとともに前記タンク底部の前記尿素水温度管理用配管が位置する部分の周辺部に放熱板を設け、付近部分を好ましい温度に保って尿素水の測定又は吸引をすることができるものが記載されている。   Further, in Patent Document 3, a plurality of recesses are provided on the wide side surface of the tank body to ensure the rigidity of the tank body to improve seismic resistance and pressure resistance, and the temperature management pipe is connected to the tank bottom and the measurement pipe. A heat radiating plate is provided in the vicinity of the portion where the urea water temperature management pipe is located at the bottom of the tank, and urea water is measured or sucked while maintaining the vicinity at a preferred temperature. What can be done is described.

特開２００５−２８３２０１号公報JP 2005-283001 A 特開２００５−２９９５１０号公報JP 2005-299510 A 特開２００６−２２６２８２号公報JP 2006-226282 A

このような尿素水タンクは、尿素水に対する耐食性とともに高い機密性が求められており、樹脂又はステンレス鋼（ＳＵＳ）で造られている。   Such a urea water tank is required to have high confidentiality as well as corrosion resistance to urea water, and is made of resin or stainless steel (SUS).

図５に示すように、従来の尿素水タンク３０は、１枚のステンレス鋼の板を横巻きにして正面部、後面部及び両側面部を形成したタンク胴部３１に、上下からステンレス鋼のエンドプレート３２、３２を溶接又はろう付けにて接合してタンク本体を形成し、このタンク本体の上面に、濃度センサー、液面センサーのセンサーユニット３４、およびＮＯｘを還元浄化するため尿素水をＮＯｘ触媒コンバータへ送出する尿素水供給パイプ、尿素水タンク内の尿素水解凍装置へラジエータで加熱された冷却水を供給するパイプといったパイプ類３５を装着し、タンク胴部３１の正面には尿素水タンク３０に尿素水を注水するための注水口パイプ３３、注水時の液面を確認するための尿素水量確認ゲージ３６を取り付けて形成していた。   As shown in FIG. 5, a conventional urea water tank 30 has a stainless steel end from above and below on a tank body 31 in which a front portion, a rear portion and both side portions are formed by horizontally winding a single stainless steel plate. Plates 32 and 32 are joined by welding or brazing to form a tank body, and a concentration sensor, a sensor unit 34 of a liquid level sensor, and urea water for reducing and purifying NOx on the upper surface of the tank body are treated with a NOx catalyst. Pipes 35 such as a urea water supply pipe to be sent to the converter and a pipe for supplying cooling water heated by a radiator to the urea water thawing device in the urea water tank are mounted, and a urea water tank 30 is mounted in front of the tank body 31. In addition, a water inlet pipe 33 for pouring urea water and a urea water amount confirmation gauge 36 for confirming the liquid level at the time of water injection are attached.

このような尿素水タンク３０では、上面に取り付けるセンサーユニット３４やパイプ類３５が各々別部品で大型なものであり、それらを上面のエンドプレート３２に取り付ける際や、タンク胴部３１正面に注水口パイプ３３を取り付ける際には、気密性重視で溶接又はろう付け作業を行う必要があった。しかし、近年ではコストダウンのため、それらのセンサーユニット、パイプ類が小型化、簡素化、一体化されてパイプ・センサーユニットとなり、取り付け方法も簡単になってきており、タンク本体側の加工も簡素化できるようになってきた。   In such a urea water tank 30, the sensor unit 34 and the pipes 35 attached to the upper surface are separate parts and large, and when they are attached to the end plate 32 on the upper surface, the water injection port is provided in front of the tank body 31. When attaching the pipe 33, it was necessary to perform welding or brazing work with an emphasis on airtightness. However, in recent years, in order to reduce costs, these sensor units and pipes have been reduced in size, simplified, and integrated into a pipe / sensor unit, and the mounting method has become easier, and the processing on the tank body side is also simplified. Has come to be able to.

しかし、従来の尿素水タンク３０ではタンク胴部３１を横巻きに形成していたため、注水口パイプ３３の設置に関しては、タンク本体を形成した後、正面に設けてある注水口パイプ３３接合用の取付孔に注水口パイプ３３を挿入、仮止めし、溶接又はろう付けにて接合していた。
図６に示すように、この注水口パイプ３３は正面に対して斜めに接合するため、位置決めが面倒であり、タンク本体側の孔あけも面倒であった。また、注水口パイプ３３の接合はタンク本体を組んだ後で行うため、タンク本体の取り回しがしづらく作業性が良くなかった。 However, in the conventional urea water tank 30, the tank body 31 is formed in a horizontal winding, and therefore, regarding the installation of the water inlet pipe 33, after the tank body is formed, the water inlet pipe 33 for joining the water inlet pipe 33 provided on the front surface is used. The water inlet pipe 33 was inserted into the mounting hole, temporarily fixed, and joined by welding or brazing.
As shown in FIG. 6, since the water inlet pipe 33 was joined obliquely to the front, positioning was troublesome, and drilling on the tank body side was also troublesome. Further, since the water inlet pipe 33 is joined after the tank body is assembled, it is difficult to handle the tank body and the workability is not good.

また、注水口パイプ３３上部とタンク本体正面の隙間を狭くした場合や注水口パイプ３３にキャップ落下防止用チェーン３７のチェーン接続部又は盗難防止用キーシリンダー３８を取り付けた場合、溶接ロボットでの溶接の際には、注水口パイプ３３上部やチェーン接続部や盗難防止用キーシリンダー３８が、溶接棒や溶接トーチ（溶接機）と干渉することがあった。さらに注水口パイプ３３の径は５０ｍｍ〜６０ｍｍと小さく、タンク本体正面に斜めに接合するため溶接軌跡が楕円形となることもあり、溶接ロボットの設定が困難であった。   Further, when the gap between the upper part of the water inlet pipe 33 and the front of the tank body is narrowed, or when the chain connection part of the cap drop prevention chain 37 or the anti-theft key cylinder 38 is attached to the water inlet pipe 33, welding with a welding robot is performed. In this case, the upper part of the water inlet pipe 33, the chain connection part, and the anti-theft key cylinder 38 may interfere with the welding rod and the welding torch (welder). Furthermore, the diameter of the water inlet pipe 33 is as small as 50 mm to 60 mm, and since the welding trajectory may be elliptical because it is obliquely joined to the front surface of the tank body, it is difficult to set the welding robot.

さらに、従来の尿素水タンク３０で尿素水の貯蔵量を増やす場合、タンク胴部３１が横巻きに構成されているためこれを縦方向に延ばして容量を増やすことは可能であったが、車両側のレイアウトの制限により縦方向に延ばすことには限界があるため、実際はタンク胴部３１を横方向へ広げるなどタンク全体の寸法を変更することになっていた。   Further, when the amount of urea water stored in the conventional urea water tank 30 is increased, since the tank body 31 is configured in a horizontal winding, it has been possible to extend this vertically to increase the capacity. Since there is a limit to extending in the vertical direction due to the limitation of the layout on the side, the dimensions of the entire tank are actually changed, such as expanding the tank body 31 in the horizontal direction.

本発明は上記問題点を解決するためになされたものであり、注水口やパイプ・センサーユニット等の部品を容易に成形又は取り付けすることができ、また、タンク本体の加工が容易で、必要な尿素水の貯蔵量に合わせて容易にタンクの容量を調整することが可能な尿素水タンクを提供することを課題とする。   The present invention has been made to solve the above-described problems, and can easily form or attach parts such as a water inlet and a pipe / sensor unit, and the tank body can be easily processed. It is an object of the present invention to provide a urea water tank capable of easily adjusting the capacity of the tank according to the storage amount of urea water.

本発明において、前記課題が解決される手段は以下の通りである。
第１の発明は、板材で形成した箱型のタンク本体にパイプ・センサーユニット、注水口及び尿素水量確認ゲージを備えてなる尿素水タンクにおいて、上記タンク本体の正面部と上面部との間に傾斜板部を有し、この傾斜板部には、その傾斜面に垂直に突出する上記注水口を一体成形したことを特徴とする。 In the present invention, means for solving the above problems are as follows.
A first aspect of the present invention is a urea water tank comprising a box-shaped tank body formed of a plate material and provided with a pipe / sensor unit, a water injection port, and a urea water amount confirmation gauge, between the front portion and the upper surface portion of the tank body. An inclined plate portion is provided, and the water injection port protruding perpendicularly to the inclined surface is integrally formed on the inclined plate portion.

第２の発明は、第１の発明において、長方形のステンレス鋼の板を縦方向に折曲して正面部、底面部、後面部及び上面部を形成し、この正面部と上面部との間に間隔を設けたタンク胴部材と、このタンク胴部材の上記間隔に橋架され、パイプ・センサーユニット及び尿素水量確認ゲージを取り付けるための孔を各別に有し、かつ、上記注水口を一体成形した上記傾斜板部を有するステンレス鋼の部品取付板と、上記タンク胴部材と上記部品取付板とからなる角筒の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板と、を溶接又はろう付けにより接合して上記タンク本体を形成したことを特徴とする。   According to a second invention, in the first invention, a rectangular stainless steel plate is bent in a vertical direction to form a front surface portion, a bottom surface portion, a rear surface portion, and an upper surface portion, and between the front surface portion and the upper surface portion. The tank body member is provided with an interval between the tank body member, the tank body member is bridged at the interval, the pipe sensor unit and the urea water amount confirmation gauge are separately provided, and the water injection port is integrally formed. It is a planar shape covering both sides of a square tube composed of a stainless steel component mounting plate having the inclined plate portion, the tank body member and the component mounting plate, and has a bent edge for joining along the outer periphery. The tank body is formed by joining two provided stainless steel side plates by welding or brazing.

第３の発明は、第１の発明において、長方形のステンレス鋼の板を縦方向に折曲して形成した正面部、底面部、後面部、上面部、及び上記注水口を一体成形した上記傾斜板部を有し、パイプ・センサーユニット及び尿素水量確認ゲージを取り付けるための孔を各別に有し、かつ、巻き方向両端を接合して角筒状に形成したタンク胴部と、このタンク胴部の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板と、を溶接又はろう付けにより接合して上記タンク本体を形成したことを特徴とする。   According to a third aspect of the invention, in the first aspect of the invention, the front part, the bottom part, the rear part, the top part, and the water injection port formed by bending a rectangular stainless steel plate in the longitudinal direction are integrally formed. A tank body having a plate part, each having a hole for attaching a pipe sensor unit and a urea water amount confirmation gauge, and formed in a rectangular tube shape by joining both ends in the winding direction, and the tank body The tank body is formed by welding or brazing two stainless steel side plates, which have a planar shape covering both sides of the steel plate and are provided with bent edges for joining along the outer periphery. It is characterized by.

第１の発明では、上記タンク本体の正面部と上面部との間に傾斜板部を有し、この傾斜板部には、その傾斜面に垂直に突出する上記注水口を一体成形したことにより、注水口パイプを別体に形成してこれを接合する必要がなくなるため、部品点数が削減できる。このため、孔あけ部位、溶接ロボット等による溶接作業部位及び気密性のチェック部位が減り、工数を削減することができる。
また、注水口を上記傾斜板部の傾斜面に垂直に突出するように設定したため、容易にプレス成形をすることができる。 In 1st invention, it has an inclined board part between the front part and upper surface part of the said tank main body, and the said water injection port which protrudes perpendicularly to the inclined surface was integrally formed in this inclined board part. Since it becomes unnecessary to form the water inlet pipe separately and join it, the number of parts can be reduced. For this reason, a drilling site | part, the welding operation site | part by a welding robot, etc., and an airtightness check site | part reduce, and a man-hour can be reduced.
Moreover, since the water injection port is set so as to protrude perpendicularly to the inclined surface of the inclined plate portion, press molding can be easily performed.

第２の発明では、長方形のステンレス鋼の板を縦方向に折曲して正面部、底面部、後面部及び上面部を形成し、この正面部と上面部との間に間隔を設けたタンク胴部材と、このタンク胴部材の上記間隔に橋架され、パイプ・センサーユニット及び尿素水量確認ゲージを取り付けるための孔を各別に有し、かつ、上記注水口を一体成形した上記傾斜板部を有するステンレス鋼の部品取付板と、上記タンク胴部材と上記部品取付板とからなる角筒の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板と、を溶接又はろう付けにより接合して上記タンク本体を形成したことにより、部品の成形及び取り付けが１枚の部品取付板に集約されて、１枚の板を加工し部品を取り付けるだけでよく、作業工数、成形用の型等を削減することができて生産性が向上し、尿素水タンクのコストダウンが可能となる。   In the second invention, a rectangular stainless steel plate is bent in the vertical direction to form a front part, a bottom part, a rear part and an upper part, and a tank provided with a gap between the front part and the upper part. A body member, and a bridge member that is bridged at the space between the tank body member, has a hole for attaching a pipe sensor unit and a urea water amount confirmation gauge, and has the inclined plate portion integrally formed with the water injection port. Two pieces of stainless steel having a flat shape covering both sides of a square tube composed of a stainless steel component mounting plate, the tank body member, and the component mounting plate, and having bent edges for joining along the outer periphery By forming the tank body by joining the steel side plates by welding or brazing, the molding and mounting of the components are integrated into one component mounting plate. All you need to do is install Man, and it is possible to reduce the mold or the like for molding increases productivity, the cost can be reduced in the aqueous urea tank.

また、尿素水タンクの車両への取付位置は縦方向に制限が多く横方向には自由度がある場合が多いため、上記タンク胴部材を縦巻きに形成したことにより、貯蔵する尿素水の容量に合わせてタンク胴部材を横方向へ延ばして、容易に尿素水タンクの容量を変更することができる。   In addition, since the installation position of the urea water tank to the vehicle is limited in the vertical direction and there are many degrees of freedom in the horizontal direction, the capacity of the urea water to be stored can be obtained by forming the tank body member in a vertical winding. Accordingly, the capacity of the urea water tank can be easily changed by extending the tank body member in the lateral direction.

第３の発明では、長方形のステンレス鋼の板を縦方向に折曲して形成した正面部、底面部、後面部、上面部、及び上記注水口を一体成形した上記傾斜板部を有し、パイプ・センサーユニット及び尿素水量確認ゲージを取り付けるための孔を各別に有し、かつ、巻き方向両端を接合して角筒状に形成したタンク胴部と、このタンク胴部の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板と、を溶接又はろう付けにより接合して上記タンク本体を形成したことにより、縦巻きのタンク胴部を横方向へ延ばして尿素水タンクの容量を容易に変更できるとともに、タンク本体を３つの部材から形成したことで部品点数を削減することができて、溶接作業部位及び気密性のチェック部位が減り、工数を削減することができる。   In the third invention, the front part formed by bending a rectangular stainless steel plate in the vertical direction, the bottom part, the rear part, the top part, and the inclined plate part integrally formed with the water inlet, A tank body that has a hole for attaching the pipe sensor unit and urea water amount confirmation gauge, and is formed into a rectangular tube by joining both ends in the winding direction, and a plane that covers both sides of the tank body A vertically wound tank formed by joining the two stainless steel side plates with a bent edge for joining along the outer periphery to form the tank body by welding or brazing. The capacity of the urea water tank can be easily changed by extending the body part in the horizontal direction, and the number of parts can be reduced by forming the tank body from three members, and the welding work site and the airtightness check site Decrease, It is possible to reduce the number.

以下、本発明の第１実施形態にかかる尿素水タンク１について、図面に基づいて説明する。
図１は、本発明の第１実施形態にかかる尿素水タンク１を示したものである。
この尿素水タンク１は、複数の板材で形成した箱型のタンク本体２に、濃度センサー、液面センサー、尿素水供給パイプ、タンク内の尿素水解凍装置へラジエータからの冷却水を供給するパイプ類を一体化したパイプ・センサーユニット６、尿素水タンク１に尿素水を注水するための注水口８及び注水時に液面を確認するための尿素水量確認ゲージ９を備えてなる。
タンク本体２は正面部と上面部の間に傾斜板部を有しており、側面略五角形の略五角柱状に形成されている。注水口８はこの傾斜板部の傾斜面に垂直に突出している。注水口８にはキャップ１２が取り付けられ、キャップ１２にはキャップ落下防止チェーン１３が取り付けられる。 Hereinafter, urea water tank 1 concerning a 1st embodiment of the present invention is explained based on a drawing.
FIG. 1 shows a urea water tank 1 according to a first embodiment of the present invention.
This urea water tank 1 is a pipe for supplying cooling water from a radiator to a concentration sensor, a liquid level sensor, a urea water supply pipe, and a urea water thawing device in the tank to a box-shaped tank body 2 formed of a plurality of plates. A pipe / sensor unit 6 in which the components are integrated, a water injection port 8 for injecting urea water into the urea water tank 1, and a urea water amount confirmation gauge 9 for checking the liquid level at the time of water injection are provided.
The tank main body 2 has an inclined plate portion between the front portion and the upper surface portion, and is formed in a substantially pentagonal prism shape having a substantially side face. The water inlet 8 protrudes perpendicularly to the inclined surface of the inclined plate portion. A cap 12 is attached to the water inlet 8, and a cap drop prevention chain 13 is attached to the cap 12.

図２に示すように、タンク本体２は、タンク胴部材３、部品取付板４、及び２枚の側面板５、５の４つの部材を溶接又はろう付けにて一体に接合して形成する。   As shown in FIG. 2, the tank body 2 is formed by integrally joining four members of a tank body member 3, a component mounting plate 4, and two side plates 5, 5 by welding or brazing.

タンク胴部材３は、１枚の長方形のステンレス鋼の板を、タンク本体２の形状に合わせて縦方向に折曲し、正面部３ａ、底面部３ｂ、後面部３ｃ及び上面部３ｄを設けて形成する。部品取付板４と接合する正面部３ａ及び上面部３ｄは短く設定して、巻き方向両端の間に間隔を設けている。
底面部３ｂには、メンテナンス時に尿素水を排出するためのドレン孔１５を穿設し、ドレンボルト（図示せず）にて尿素水が漏れないように塞ぐ。 The tank body member 3 is formed by bending a rectangular stainless steel plate in the vertical direction in accordance with the shape of the tank body 2, and providing a front surface portion 3a, a bottom surface portion 3b, a rear surface portion 3c, and an upper surface portion 3d. Form. The front portion 3a and the upper surface portion 3d to be joined to the component mounting plate 4 are set short, and a gap is provided between both ends in the winding direction.
The bottom surface portion 3b is provided with a drain hole 15 for discharging urea water at the time of maintenance, and is closed with a drain bolt (not shown) so that the urea water does not leak.

部品取付板４は、ステンレス鋼の板を折曲して形成した上面部４ａ、傾斜板部４ｂ及び正面部４ｃを有する。図３に示すように、注水口８を成形する傾斜板部４ｂの角度は、車両レイアウトや尿素水供給装置の注水口８への挿入性等を考慮して、注水口８が傾斜面に対して垂直に成形されるような角度に設定されている。
上面部４ａにはパイプ・センサーユニット取付孔７を穿設し、傾斜板部４ｂにはプレス加工によりその傾斜面に対し垂直に注水口８を一体成形し、傾斜板部４ｂ及び正面部４ｃに尿素水量確認ゲージ取付孔１１、１１を各１箇所穿設している。注水口８近傍にはキャップ落下防止チェーン１３を取り付けるためのチェーン接続部１４が取り付けられ、尿素水量確認ゲージ取付孔１１には取付パイプ１０が接合されている。 The component mounting plate 4 has an upper surface portion 4a, an inclined plate portion 4b, and a front surface portion 4c formed by bending a stainless steel plate. As shown in FIG. 3, the angle of the inclined plate portion 4 b that forms the water injection port 8 is determined so that the water injection port 8 is inclined with respect to the inclined surface in consideration of the vehicle layout and the insertability of the urea water supply device into the water injection port 8. The angle is set so as to form vertically.
A pipe / sensor unit mounting hole 7 is formed in the upper surface portion 4a, and a water injection port 8 is formed integrally with the inclined plate portion 4b perpendicularly to the inclined surface by pressing, and is formed in the inclined plate portion 4b and the front portion 4c. A urea water amount confirmation gauge mounting hole 11 is formed at one location each. A chain connecting portion 14 for attaching the cap drop prevention chain 13 is attached in the vicinity of the water injection port 8, and an attachment pipe 10 is joined to the urea water amount confirmation gauge attachment hole 11.

上記部品取付板４が小形であれば、取り回しが良くプレス加工や溶接の作業性が向上し、また、注水口８をプレス加工によって成形する際の周辺の材料の引けを考慮した母材のプレス前形状の割り出しが容易で、カットの際の歩留まりがよくなるため、部品取付板４の巻き方向の長さは、各部品を取り付けるために十分な範囲で極力短く設定するのが好ましい。   If the component mounting plate 4 is small, the handling is good and the workability of press working and welding is improved, and the base material is pressed in consideration of the shrinkage of surrounding materials when the water injection port 8 is formed by press working. Since it is easy to determine the front shape and the yield at the time of cutting is improved, it is preferable to set the length in the winding direction of the component mounting plate 4 as short as possible within a range sufficient for mounting each component.

左右の側面板５、５は、ステンレス鋼の板をプレスして、タンク胴部材３、部品取付板４の両側部を覆うように五角形の平面部を形成し、溶接部となる端部全周を平面部に対し略垂直に折り曲げて折り曲げ縁部５ａを設けている。平面部は広い平面であるため、車両からの振動への強度を上げる凹状の補強ビード１６を設けている。   The left and right side plates 5 and 5 are formed of a pentagonal flat portion so as to cover both sides of the tank body member 3 and the component mounting plate 4 by pressing a stainless steel plate, and the entire circumference of the end portion serving as a welded portion. Is bent substantially perpendicularly to the flat surface portion to provide a bent edge portion 5a. Since the flat portion is a wide flat surface, a concave reinforcing bead 16 is provided to increase the strength against vibration from the vehicle.

タンク胴部材３の正面部３ａと上面部３ｄとの間隔に部品取付板４を橋架し、その両端部を接合して略五角筒状に形成し、この角筒の両側部に側面板５、５を折り曲げ縁部５ａ、５ａで接合してタンク本体２を形成する。その後、パイプ・センサーユニット取付孔７にパイプ・センサーユニット６を装着し、尿素水量確認ゲージ９を傾斜板部及び正面部に跨るように取付パイプ１０に取り付けて尿素水タンク１を形成する。   The component mounting plate 4 is bridged at a distance between the front surface portion 3a and the upper surface portion 3d of the tank body member 3, and both end portions thereof are joined to form a substantially pentagonal cylinder. The tank body 2 is formed by joining 5 with bent edges 5a and 5a. Thereafter, the pipe / sensor unit mounting hole 7 is fitted with the pipe / sensor unit 6, and the urea water amount confirmation gauge 9 is attached to the mounting pipe 10 so as to straddle the inclined plate portion and the front portion, thereby forming the urea water tank 1.

尿素水タンク１は、浸透性の高い尿素水の性質上、他の燃料タンクと比べ気密性が重要となり、溶接又はろう付けする作業では気密性を重視し、完成後に気密確認を行う。   In the urea water tank 1, the air tightness is more important than other fuel tanks due to the property of the highly permeable urea water, and in the work of welding or brazing, the air tightness is emphasized and the air tightness confirmation is performed after completion.

このような第１実施形態にかかる尿素水タンク１では、タンク本体２の正面部と上面部との間に傾斜板部を有し、この傾斜板部には、その傾斜面に垂直に突出する上記注水口８を一体成形したことにより、注水口パイプを別体に形成してこれを接合する必要がなくなるため、部品点数が削減できる。このため、孔あけ部位、溶接ロボット等による溶接作業部位及び気密性のチェック部位が減り、工数を削減することができる。
また、注水口８を上記傾斜板部の傾斜面に垂直に突出するように設定したため、容易にプレス成形をすることができる。 In the urea water tank 1 according to the first embodiment, an inclined plate portion is provided between the front portion and the upper surface portion of the tank body 2, and the inclined plate portion projects perpendicularly to the inclined surface. Since the water injection port 8 is integrally formed, it is not necessary to separately form the water injection pipe and join it, so that the number of parts can be reduced. For this reason, a drilling site | part, the welding operation site | part by a welding robot, etc., and an airtightness check site | part reduce, and a man-hour can be reduced.
Further, since the water injection port 8 is set so as to protrude perpendicularly to the inclined surface of the inclined plate portion, press molding can be easily performed.

また、長方形のステンレス鋼の板を縦方向に折曲して正面部３ａ、底面部３ｂ、後面部３ｃ及び上面部３ｄを形成し、この正面部３ａと上面部３ｄとの間に間隔を設けたタンク胴部材３と、このタンク胴部材３の上記間隔に橋架され、パイプ・センサーユニット取付孔７及び尿素水量確認ゲージ取付孔１１を各別に有し、かつ、上記注水口８を一体成形した傾斜板部４ｂを有するステンレス鋼の部品取付板４と、上記タンク胴部材３と上記部品取付板４とからなる角筒の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部５ａを設けた２枚のステンレス鋼の側面板５と、を溶接又はろう付けにより接合して上記タンク本体２を形成したことにより、部品の成形及び取り付けが１枚の部品取付板４に集約されて、１枚の板を加工し部品を取り付けるだけでよく、作業工数、成形用の型等を削減することができて生産性が向上し、尿素水タンク１のコストダウンが可能となる。   Further, a rectangular stainless steel plate is bent in the vertical direction to form a front surface portion 3a, a bottom surface portion 3b, a rear surface portion 3c, and an upper surface portion 3d, and a space is provided between the front surface portion 3a and the upper surface portion 3d. The tank body member 3 and the tank body member 3 are bridged at the above-described interval, and each has a pipe / sensor unit attachment hole 7 and a urea water amount confirmation gauge attachment hole 11, and the water injection port 8 is integrally formed. A stainless steel component mounting plate 4 having an inclined plate portion 4b, and a planar shape covering both sides of a rectangular tube composed of the tank body member 3 and the component mounting plate 4, and is bent for joining along the outer periphery. By forming the tank body 2 by joining the two stainless steel side plates 5 provided with the edge portions 5a by welding or brazing, the molding and mounting of components can be performed on one component mounting plate 4. Combined, add one board And need only attach the parts, man-hours, and can reduce the mold or the like for molding increases productivity, the cost can be reduced in the urea water tank 1.

さらに、尿素水タンクの車両への取付位置は縦方向に制限が多く横方向には自由度がある場合が多いため、タンク胴部材３を縦巻きに形成したことにより、貯蔵する尿素水の容量に合わせて横方向へ延ばして、容易に尿素水タンク１の容量を変更することができる。   Furthermore, since the mounting position of the urea water tank to the vehicle is limited in the vertical direction and there are many degrees of freedom in the horizontal direction, the capacity of the urea water to be stored is obtained by forming the tank body member 3 in a vertical winding. The capacity of the urea water tank 1 can be easily changed by extending in the horizontal direction.

[第２実施形態]
上記第１実施形態では、タンク胴部材３と部品取付板４を別体に設けたが、図４に示すように、部品取付板を廃止し、五角筒状に形成したタンク胴部２１に各部品を取り付けまたは成形してもよい。
タンク胴部２１は、長方形のステンレス鋼の板を縦方向に折曲して、正面部２１ａ、底面部２１ｂ、後面部２１ｃ、上面部２１ｄ、及び傾斜板部２１ｅを設けて形成する。この傾斜板部２１ｅにはプレス加工により傾斜面に対し垂直に注水口２４が一体成形してあり、注水口２４近傍にチェーン接続部２７を取り付けている。上面部２１ｄにはパイプ・センサーユニット取付孔２３が穿設され、傾斜板部２１ｅ及び正面部２１ａに尿素水量確認ゲージ取付孔２６、２６が穿設され、尿素水量確認ゲージ取付孔２６に取付パイプ２５を取り付けている。底面部２１ｂにはドレン孔２８を設けている。
正面部２１ａ上端付近でタンク胴部２１の巻き方向両端を溶接又はろう付けにより接合して筒状体とし、両側部に側面板２２、２２を折り曲げ縁部で接合することでタンク本体を形成する。 [Second Embodiment]
In the first embodiment, the tank body member 3 and the component mounting plate 4 are provided separately. However, as shown in FIG. 4, the component mounting plate is abolished and each tank body 21 formed in a pentagonal cylinder shape is provided. Parts may be attached or molded.
The tank body portion 21 is formed by bending a rectangular stainless steel plate in the vertical direction to provide a front surface portion 21a, a bottom surface portion 21b, a rear surface portion 21c, an upper surface portion 21d, and an inclined plate portion 21e. The inclined plate portion 21e is integrally formed with a water injection port 24 perpendicular to the inclined surface by pressing, and a chain connection portion 27 is attached in the vicinity of the water injection port 24. A pipe / sensor unit mounting hole 23 is drilled in the upper surface portion 21d, urea water amount confirmation gauge mounting holes 26, 26 are drilled in the inclined plate portion 21e and the front surface portion 21a, and a pipe is attached to the urea water amount confirmation gauge mounting hole 26. 25 is attached. A drain hole 28 is provided in the bottom surface portion 21b.
In the vicinity of the upper end of the front portion 21a, both ends of the tank body 21 in the winding direction are joined by welding or brazing to form a cylindrical body, and side tanks 22 and 22 are joined to both sides by bending edges to form a tank body. .

このような第２実施形態では、長方形のステンレス鋼の板を縦方向に折曲して形成した正面部２１ａ、底面部２１ｂ、後面部２１ｃ、上面部２１ｄ、及び上記注水口２４を一体成形した上記傾斜板部２１ｅを有し、パイプ・センサーユニット取付孔２３及び尿素水量確認ゲージ取付孔２６を各別に有し、かつ、巻き方向両端を接合して角筒状に形成したタンク胴部２１と、このタンク胴部２１の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板２２と、を溶接又はろう付けにより接合して上記タンク本体を形成したことにより、縦巻きのタンク胴部２１を横方向へ延ばして尿素水タンクの容量を容易に変更することができるとともに、タンク本体を３つの部材から形成したことで部品点数を削減することができて、溶接作業部位及び気密性のチェック部位が減り、工数を削減することができる。   In such a second embodiment, a front surface portion 21a, a bottom surface portion 21b, a rear surface portion 21c, a top surface portion 21d, and the water injection port 24 formed by bending a rectangular stainless steel plate in the vertical direction are integrally formed. A tank body portion 21 having the inclined plate portion 21e, a pipe / sensor unit mounting hole 23 and a urea water amount confirmation gauge mounting hole 26, and a rectangular tube shape formed by joining both ends in the winding direction; The two stainless steel side plates 22 having a planar shape covering both sides of the tank body 21 and having a bent edge for joining along the outer periphery are joined by welding or brazing. By forming the tank body, it is possible to easily change the capacity of the urea water tank by extending the vertically wound tank body portion 21 in the lateral direction, and the tank body is formed from three members. To be able to reduce the number, fewer checks site welding site and airtightness, it is possible to reduce the man-hours.

本発明の第１実施形態に係る尿素水タンクを示す斜視図である。It is a perspective view which shows the urea water tank which concerns on 1st Embodiment of this invention. 第１実施形態に係るタンク本体の分解斜視図である。It is a disassembled perspective view of the tank main body which concerns on 1st Embodiment. 第１実施形態に係る部品取付板の側面図である。It is a side view of the component mounting plate which concerns on 1st Embodiment. 本発明の第２実施形態に係る尿素水タンクのタンク本体を示す分解斜視図である。It is a disassembled perspective view which shows the tank main body of the urea water tank which concerns on 2nd Embodiment of this invention. 従来の尿素水タンクを示す斜視図である。It is a perspective view which shows the conventional urea water tank. 図５の注水口パイプを示す拡大側面図である。FIG. 6 is an enlarged side view showing the water inlet pipe of FIG. 5.

符号の説明Explanation of symbols

１ 尿素水タンク
２ タンク本体
３ タンク胴部材
３ａ 正面部
３ｂ 底面部
３ｃ 後面部
３ｄ 上面部
４ 部品取付板
４ａ 上面部
４ｂ 傾斜板部
４ｃ 正面部
５ 側面板
５ａ 折り曲げ縁部
６ パイプ・センサーユニット
７ パイプ・センサーユニット取付孔
８ 注水口
９ 尿素水量確認ゲージ
１０ 取付パイプ
１１ 尿素水量確認ゲージ取付孔
１２ キャップ
１３ キャップ落下防止チェーン
１４ チェーン接続部
１５ ドレン孔
１６ 補強ビード
２１ タンク胴部
２１ａ 正面部
２１ｂ 底面部
２１ｃ 後面部
２１ｄ 上面部
２１ｅ 傾斜板部
２２ 側面板
２３ パイプ・センサーユニット取付孔
２４ 注水口
２５ 取付パイプ
２６ 尿素水量確認ゲージ取付孔
２７ チェーン接続部
２８ ドレン孔
３０ 尿素水タンク
３１ タンク胴部
３２ エンドプレート
３３ 注水口パイプ
３４ センサーユニット
３５ パイプ類
３６ 尿素水量確認ゲージ
３７ キャップ落下防止チェーン
３８ 盗難防止用キーシリンダー DESCRIPTION OF SYMBOLS 1 Urea water tank 2 Tank main body 3 Tank body member 3a Front surface part 3b Bottom surface part 3c Rear surface part 3d Upper surface part 4 Component mounting plate 4a Upper surface part 4b Inclined plate part 4c Front surface part 5 Side plate 5a Bending edge part 6 Pipe sensor unit 7 Pipe / sensor unit mounting hole 8 Water injection port 9 Urea water amount confirmation gauge 10 Mounting pipe 11 Urea water amount confirmation gauge mounting hole 12 Cap 13 Cap drop prevention chain 14 Chain connection part 15 Drain hole 16 Reinforcement bead 21 Tank body part 21a Front part 21b Bottom face Part 21c Rear surface part 21d Upper surface part 21e Inclined plate part 22 Side plate 23 Pipe / sensor unit mounting hole 24 Water injection port 25 Mounting pipe 26 Urea water amount confirmation gauge mounting hole 27 Chain connection part 28 Drain hole 30 Urea water tank 31 Tank body part 32 End plate 3 Water inlet pipe 34 sensor unit 35 pipes 36 urea water check gauge 37 cap fall preventing chain 38 anti-theft key cylinder

Claims (3)

板材で形成した箱型のタンク本体にパイプ・センサーユニット、注水口及び尿素水量確認ゲージを備えてなる尿素水タンクにおいて、
上記タンク本体の正面部と上面部との間に傾斜板部を有し、
この傾斜板部には、その傾斜面に垂直に突出する上記注水口を一体成形したことを特徴とする尿素水タンク。 In a urea water tank comprising a box-type tank body made of plate material with a pipe sensor unit, a water inlet and a urea water amount confirmation gauge,
It has an inclined plate part between the front part and the top part of the tank body,
The urea water tank, wherein the inclined plate portion is integrally formed with the water injection port protruding perpendicularly to the inclined surface. 長方形のステンレス鋼の板を縦方向に折曲して正面部、底面部、後面部及び上面部を形成し、この正面部と上面部との間に間隔を設けたタンク胴部材と、
このタンク胴部材の上記間隔に橋架され、パイプ・センサーユニット及び尿素水量確認ゲージを取り付けるための孔を各別に有し、かつ、上記注水口を一体成形した上記傾斜板部を有するステンレス鋼の部品取付板と、
上記タンク胴部材と上記部品取付板とからなる角筒の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板と、
を溶接又はろう付けにより接合して上記タンク本体を形成したことを特徴とする請求項１記載の尿素水タンク。 A tank body member formed by bending a rectangular stainless steel plate in the vertical direction to form a front part, a bottom part, a rear part, and an upper part, and providing a space between the front part and the upper part,
A stainless steel part that is bridged at the above-mentioned interval between the tank body members, has a hole for attaching a pipe sensor unit and a urea water amount confirmation gauge, and has the inclined plate portion integrally formed with the water injection port. A mounting plate;
Two stainless steel side plates, each having a planar shape covering both sides of a rectangular tube composed of the tank body member and the component mounting plate, and provided with bent edges for joining along the outer periphery;
The urea water tank according to claim 1, wherein the tank body is formed by welding or brazing. 長方形のステンレス鋼の板を縦方向に折曲して形成した正面部、底面部、後面部、上面部、及び上記注水口を一体成形した上記傾斜板部を有し、パイプ・センサーユニット及び尿素水量確認ゲージを取り付けるための孔を各別に有し、かつ、巻き方向両端を接合して角筒状に形成したタンク胴部と、
このタンク胴部の両側部を覆う平面形状であって、外周に沿って接合用の折り曲げ縁部を設けた２枚のステンレス鋼の側面板と、
を溶接又はろう付けにより接合して上記タンク本体を形成したことを特徴とする請求項１記載の尿素水タンク。 A pipe / sensor unit and urea having a front part, a bottom part, a rear part, a top part, and the inclined plate part integrally formed with the water injection port formed by bending a rectangular stainless steel plate in the vertical direction A tank body that has a hole for attaching a water amount confirmation gauge, and is formed in a rectangular tube shape by joining both ends in the winding direction;
Two stainless steel side plates, which are planar shapes covering both sides of the tank body, and which are provided with bent edges for joining along the outer periphery;
The urea water tank according to claim 1, wherein the tank body is formed by welding or brazing.
JP2008013691A 2008-01-24 2008-01-24 Urea water tank Pending JP2009174418A (en)

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CN103827405A (en) * 2013-02-15 2014-05-28 株式会社小松制作所 Hydraulic excavator
JP2015048769A (en) * 2013-08-30 2015-03-16 日立建機株式会社 Urea water tank

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JP2011132890A (en) * 2009-12-24 2011-07-07 Isuzu Motors Ltd Structure for reducing agent tank
CN102597443A (en) * 2009-12-24 2012-07-18 五十铃自动车株式会社 Structure for reducing agent tank
WO2011078236A1 (en) * 2009-12-24 2011-06-30 いすゞ自動車株式会社 Structure for reducing agent tank
CN102597443B (en) * 2009-12-24 2014-09-10 五十铃自动车株式会社 Structure for reducing agent tank
CN103827405B (en) * 2013-02-15 2016-02-24 株式会社小松制作所 Hydraulic crawler excavator
CN103827405A (en) * 2013-02-15 2014-05-28 株式会社小松制作所 Hydraulic excavator
JP2015048769A (en) * 2013-08-30 2015-03-16 日立建機株式会社 Urea water tank
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