JP5372727B2 - Reducing agent tank fixing structure - Google Patents

Reducing agent tank fixing structure Download PDF

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Publication number
JP5372727B2
JP5372727B2 JP2009292964A JP2009292964A JP5372727B2 JP 5372727 B2 JP5372727 B2 JP 5372727B2 JP 2009292964 A JP2009292964 A JP 2009292964A JP 2009292964 A JP2009292964 A JP 2009292964A JP 5372727 B2 JP5372727 B2 JP 5372727B2
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Japan
Prior art keywords
reducing agent
agent tank
band
bracket
bead
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Expired - Fee Related
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JP2009292964A
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JP2011131730A (en
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和宏 小平
章浩 戸塚
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Hino Motors Ltd
Isuzu Motors Ltd
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Hino Motors Ltd
Isuzu Motors Ltd
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Priority to JP2009292964A priority Critical patent/JP5372727B2/en
Priority to PCT/JP2010/073167 priority patent/WO2011078238A1/en
Priority to CN201080048266.3A priority patent/CN102596619B/en
Publication of JP2011131730A publication Critical patent/JP2011131730A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

Provided is a reducing agent tank fixing structure such that even a small reducing tank agent can be fixed to a bracket, and that the reducing agent tank can be easily mounted on and removed from the bracket. A laterally extending groove-like upper bead (20) is formed on an upper surface (18) at the front of the reducing agent tank (11). Furthermore, groove-like side beads (21) which extend obliquely rearward from the upper bead (20) are formed on both side surfaces (19) of the reducing agent tank (11). The bracket (13), which comprises a bottom plate section (24) and back plate sections (25), are provided to a vehicle frame (12), said bottom plate section (24) serving to place the reducing agent tank (11), and said back plate sections (25) serving to support the backside of the reducing agent tank (11). The reducing agent tank (11) is placed on the bracket (13) in such a way that the front side of the reducing agent tank (11) faces the outside of the vehicle. A band (14) is applied to the reducing agent tank (11) in such a way that an intermediate section of the band (14) is placed in the upper bead (20) and the side beads (21), and that both ends of the band (14) are anchored to the bracket (13) with a tensile force provided.

Description

本発明は、車両フレームに還元剤タンクを脱着可能に固定する還元剤タンクの固定構造に関するものである。   The present invention relates to a reducing agent tank fixing structure for detachably fixing a reducing agent tank to a vehicle frame.

ＳＣＲシステムは尿素（尿素水）を還元剤として使用しエンジンの排気ガス中のＮＯｘ（窒素酸化物）を浄化するものである。尿素水は還元剤タンクに貯蔵されエンジンの排気管内に適宜供給される（特許文献１参照）。   The SCR system uses urea (urea water) as a reducing agent to purify NOx (nitrogen oxides) in engine exhaust gas. The urea water is stored in a reducing agent tank and appropriately supplied into the exhaust pipe of the engine (see Patent Document 1).

図１１（ａ）、（ｂ）に示すように、還元剤タンク５０、５１は、車両フレーム（図示せず）に取り付けられた専用のブラケット５２に載置され、２本のバンド５３、５４を用いてブラケット５２に固定される。   As shown in FIGS. 11A and 11B, the reducing agent tanks 50 and 51 are mounted on a dedicated bracket 52 attached to a vehicle frame (not shown), and the two bands 53 and 54 are attached. Used to fix to the bracket 52.

特許第３６８７９１８号公報Japanese Patent No. 3687918

ところで、還元剤タンクを固定する方法としては上述のようにバンドを２本使用するのが一般的であるが、還元剤タンクが小さくなるとバンドを掛ける部分のスペース確保が難しいという課題があった。   By the way, as a method for fixing the reducing agent tank, it is common to use two bands as described above. However, when the reducing agent tank becomes small, there is a problem that it is difficult to secure a space for a portion where the band is hung.

また、工場でのタンク組付け及び整備時のタンク脱着作業が容易にできるような固定構造にする必要があった。   In addition, it was necessary to have a fixed structure that facilitates tank assembly and maintenance work at the factory.

そこで、本発明の目的は、上記課題を解決し、小さな還元剤タンクでもブラケットに固定でき、かつ、ブラケットに容易に脱着できる還元剤タンクの固定構造を提供することにある。   Accordingly, an object of the present invention is to solve the above-described problems and to provide a reducing agent tank fixing structure that can be fixed to a bracket even with a small reducing agent tank and that can be easily detached from the bracket.

上記課題を解決するために本発明は、車両フレームに還元剤タンクを脱着可能に固定する還元剤タンクの固定構造において、車両外側に向く上記還元剤タンク前側の上面に左右方向に延びる溝状の上部ビードを形成すると共に還元剤タンクの左右の両側面に上記上部ビードから斜め後方に延びる溝状の側部ビードを形成し、上記車両フレームに、上記還元剤タンクを載置するための底板部を有すると共に還元剤タンクの背面を支持するための背板部を有するブラケットを設け、該ブラケット上に上記還元剤タンクを前側を車両外側に向けて載置し、該還元剤タンクにバンドの中間部を上記上部ビード及び上記側部ビード内に掛けると共に、上記ブラケットに上記バンドの両端部をバンドに張力を付与しつつ係止し、上記側部ビードが、上記バンドの両端部を係止したときの上記バンドの端部の位置まで延びて形成されているものである。 In order to solve the above-described problems, the present invention provides a reducing agent tank fixing structure for removably fixing a reducing agent tank to a vehicle frame. A bottom plate portion for forming the upper bead and forming groove-shaped side beads extending obliquely rearward from the upper bead on the left and right side surfaces of the reducing agent tank, and for placing the reducing agent tank on the vehicle frame And a bracket having a back plate portion for supporting the back surface of the reducing agent tank, and the reducing agent tank is placed on the bracket with the front side facing the outside of the vehicle. the parts with applied to the upper bead and in the side bead and locking while applying a tension to the band to both ends of the band to the bracket, said side bead, the bar In which it is formed to extend to the position of the end of the band when locking the both end portions of de.

上記ブラケットには、上記還元剤タンクの左右の側面を支持するための側板部が一対対向して形成され、上記バンドの両端部が上記側板部に係止されるとよい。   A pair of side plate portions for supporting the left and right side surfaces of the reducing agent tank are formed on the bracket so as to face each other, and both end portions of the band may be locked to the side plate portions.

上記ブラケットには、上記バンドの両端を係止するための係止穴が形成され、上記バンドが、左右方向に延びる板状に形成され上記上部ビード内に収容されるバンド本体と、上記係止穴に係止されるフック部を有すると共に上記バンド本体の端部に締結される雄ねじ部を有するＪボルトとを備えるとよい。   The bracket is formed with a locking hole for locking both ends of the band, and the band is formed in a plate shape extending in the left-right direction and accommodated in the upper bead, and the locking A J-bolt having a hook portion locked in the hole and a male screw portion fastened to the end portion of the band main body may be provided.

本発明によれば、小さな還元剤タンクでもブラケットに固定でき、かつ、ブラケットに容易に脱着できる。   According to the present invention, even a small reducing agent tank can be fixed to the bracket and can be easily detached from the bracket.

図１は、本発明の一実施形態に係る還元剤タンクの固定構造の斜視図である。FIG. 1 is a perspective view of a reducing agent tank fixing structure according to an embodiment of the present invention. 図２は、図１の側面図である。FIG. 2 is a side view of FIG. 図３は、図２の平面図である。FIG. 3 is a plan view of FIG. 図４は、図２の背面図である。4 is a rear view of FIG. 図５は、バンドの要部拡斜視図である。FIG. 5 is an enlarged perspective view of a main part of the band. 図６（ａ）は、バンドの要部拡大平面図であり、図６（ｂ）は、バンドの要部拡大正面図である。FIG. 6A is an enlarged plan view of the main part of the band, and FIG. 6B is an enlarged front view of the main part of the band. 図７は、バンド本体の正面図である。FIG. 7 is a front view of the band main body. 図８は、バンドを分解した要部断面図である。FIG. 8 is a fragmentary cross-sectional view of the band disassembled. 図９（ａ）は、Ｊボルトの平面図であり、図９（ｂ）は、図９（ａ）のＡ−Ａ線矢視図である。Fig.9 (a) is a top view of J volt | bolt, FIG.9 (b) is an AA arrow directional view of Fig.9 (a). 図１０は、ＳＣＲシステムの概略図である。FIG. 10 is a schematic diagram of an SCR system. 図１１（ａ）は、従来の還元剤タンクの固定構造を示す説明図であり、図１１（ｂ）は、従来の他の還元剤タンクの固定構造を示す説明図である。FIG. 11A is an explanatory view showing a conventional reducing agent tank fixing structure, and FIG. 11B is an explanatory view showing another conventional reducing agent tank fixing structure.

以下、本発明の好適な実施形態を添付図面に基づいて詳述する。   Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

図１０に本実施形態に係る還元剤タンク（尿素水タンク）１１が用いられるＳＣＲシステム１を示す。このＳＣＲシステム１は、車両に搭載されるエンジン２に適用されるものである。   FIG. 10 shows an SCR system 1 in which a reducing agent tank (urea water tank) 11 according to this embodiment is used. The SCR system 1 is applied to an engine 2 mounted on a vehicle.

図１０に示すように、エンジン（例えば、ディーゼルエンジン）２に接続された排気管３には、排気上流側から順に、還元剤たる尿素水を排気管３内に噴射する還元剤噴射ノズル４と、排気管３内に噴射された尿素水から生成されるアンモニアで排気ガス中のＮＯｘ（窒素酸化物）を還元浄化するＳＣＲ触媒（選択還元触媒）５とが配設される。尿素水は還元剤タンク１１に貯蔵されており、還元剤供給配管６を介して還元剤供給ポンプ７に供給される。一方、還元剤供給ポンプ７に供給された尿素水の一部は、還元剤戻り配管９を介して還元剤タンク１１に戻される。そして、還元剤供給ポンプ７はＥＣＵ（エンジン制御ユニット又は電子制御ユニット）８により制御され、排気温度センサ（図示せず）により検知されるＳＣＲ触媒５の入口の排気温度がＳＣＲ触媒５の活性温度に達したとき、排気ガス中のＮＯｘの量に見合った量の尿素水を還元剤噴射ノズル４に供給する。   As shown in FIG. 10, the exhaust pipe 3 connected to the engine (for example, diesel engine) 2 has a reducing agent injection nozzle 4 that injects urea water as a reducing agent into the exhaust pipe 3 in order from the exhaust upstream side. An SCR catalyst (selective reduction catalyst) 5 for reducing and purifying NOx (nitrogen oxide) in the exhaust gas with ammonia generated from urea water injected into the exhaust pipe 3 is disposed. The urea water is stored in the reducing agent tank 11 and is supplied to the reducing agent supply pump 7 through the reducing agent supply pipe 6. On the other hand, part of the urea water supplied to the reducing agent supply pump 7 is returned to the reducing agent tank 11 via the reducing agent return pipe 9. The reducing agent supply pump 7 is controlled by an ECU (engine control unit or electronic control unit) 8, and the exhaust temperature at the inlet of the SCR catalyst 5 detected by an exhaust temperature sensor (not shown) is the activation temperature of the SCR catalyst 5. Is reached, an amount of urea water corresponding to the amount of NOx in the exhaust gas is supplied to the reducing agent injection nozzle 4.

図１に本実施形態に係る還元剤タンク１１の固定構造を示す。   FIG. 1 shows a fixing structure of the reducing agent tank 11 according to this embodiment.

図１に示すように、還元剤タンク１１は車両フレーム１２にブラケット１３とバンド１４を介して脱着可能に固定される。   As shown in FIG. 1, the reducing agent tank 11 is detachably fixed to the vehicle frame 12 via a bracket 13 and a band 14.

還元剤タンク１１は、成形自由度の高い樹脂製タンクからなり、外形を略直方体に形成されている。還元剤タンク１１は、車両外側に向けられる前面１６と、還元剤供給配管６及び還元剤戻り配管９等の配管が接続される配管接続部１７が設けられた上面１８と、左右の側面１９と、背面（図示せず）と、底面（図示せず）とを有する。また、還元剤タンク１１の前側には、還元剤補給口１５が形成されており、容易に尿素水を補給できるようになっている。還元剤タンク１１の前側の上面１８には、左右方向に延びる溝状の上部ビード２０が形成されており、還元剤タンク１１の左右の両側面１９には、上部ビード２０から斜め後方に延びる溝状の側部ビード２１が形成されている。   The reducing agent tank 11 is made of a resin tank having a high degree of molding freedom, and has an outer shape formed in a substantially rectangular parallelepiped shape. The reducing agent tank 11 includes a front surface 16 directed to the outside of the vehicle, an upper surface 18 provided with a piping connection portion 17 to which piping such as the reducing agent supply piping 6 and the reducing agent return piping 9 are connected, and left and right side surfaces 19. , Having a back surface (not shown) and a bottom surface (not shown). In addition, a reducing agent supply port 15 is formed on the front side of the reducing agent tank 11 so that urea water can be easily supplied. Groove-shaped upper beads 20 extending in the left-right direction are formed on the upper surface 18 on the front side of the reducing agent tank 11, and grooves extending obliquely rearward from the upper beads 20 are formed on the left and right side surfaces 19 of the reducing agent tank 11. A side bead 21 having a shape is formed.

車両フレーム１２は、例えば、ラダーフレームのサイドメンバからなり、図１において、車両フレーム１２の左側が車幅方向外側となっている。   The vehicle frame 12 is composed of, for example, a side member of a ladder frame. In FIG. 1, the left side of the vehicle frame 12 is the outside in the vehicle width direction.

ブラケット１３は、鋼鈑を屈曲して形成され還元剤タンク１１を収容する収容部２２と、収容部２２に一体に設けられ車両フレーム１２に取り付けられる取付部２３とからなる。   The bracket 13 includes a housing portion 22 that is formed by bending a steel plate and houses the reducing agent tank 11, and an attachment portion 23 that is provided integrally with the housing portion 22 and attached to the vehicle frame 12.

図１、図２及び図３に示すように、収容部２２は、還元剤タンク１１を載置するための底板部２４と、還元剤タンク１１の背面を支持するための背板部２５と、還元剤タンク１１の左右の側面１９を支持するための側板部２６とを備える。底板部２４は平面視略矩形板状に形成されており、軽量化のための孔２７を複数有する。側板部２６は、底板部２４の左右の両辺から上方に延びて形成されている。側板部２６の上縁２８は、前側が下がるように傾斜されており、還元剤タンク１１の前側を広い面積で露出させるようになっている。また、収容部２２内に還元剤タンク１１を収容したとき側部ビード２１の下端部に臨む側板部２６にはバンド１４を係止するための係止穴２９が形成されている。係止穴２９は側板部２６を貫通して形成されており、後述するバンド１４のフック部３０を掛けられるようになっている。また、係止穴２９は、三角形に形成されると共にバンド１４の延長方向に角部４６を向けるように形成されており、フック部３０を角部４６で位置決めするようになっている。背板部２５は、それぞれの側板部２６の後端の辺から収容部２２の内側へ延びて形成されている。また、側板部２６及び背板部２５には、底板部２４と同様に軽量化のための孔２７が複数形成されている。   As shown in FIGS. 1, 2, and 3, the accommodating portion 22 includes a bottom plate portion 24 for placing the reducing agent tank 11, a back plate portion 25 for supporting the back surface of the reducing agent tank 11, And a side plate portion 26 for supporting the left and right side surfaces 19 of the reducing agent tank 11. The bottom plate portion 24 is formed in a substantially rectangular plate shape in plan view, and has a plurality of holes 27 for weight reduction. The side plate portion 26 is formed to extend upward from both the left and right sides of the bottom plate portion 24. The upper edge 28 of the side plate portion 26 is inclined so that the front side is lowered, and the front side of the reducing agent tank 11 is exposed in a wide area. Further, a locking hole 29 for locking the band 14 is formed in the side plate portion 26 facing the lower end portion of the side bead 21 when the reducing agent tank 11 is stored in the storage portion 22. The locking hole 29 is formed through the side plate portion 26 so that a hook portion 30 of the band 14 to be described later can be hooked. Further, the locking hole 29 is formed in a triangular shape and is formed so that the corner portion 46 faces in the extending direction of the band 14, and the hook portion 30 is positioned by the corner portion 46. The back plate portion 25 is formed to extend from the rear end side of each side plate portion 26 to the inside of the accommodating portion 22. In addition, the side plate portion 26 and the back plate portion 25 are formed with a plurality of holes 27 for weight reduction, similar to the bottom plate portion 24.

図２、図３及び図４に示すように、取付部２３は、一対の断面Ｌ字状の鋼材からなり、側板部２６と背板部２５との角部３１に沿って設けられる。また、取付部２３と背板部２５には、図示しない取付ボルトを挿通するためのボルト孔３２が上下に間隔を隔てて複数形成されており、車両フレーム１２にブラケット１３を取付ボルトを介して取り付けるようになっている。   As shown in FIGS. 2, 3, and 4, the attachment portion 23 is made of a steel material having a pair of L-shaped cross sections, and is provided along the corner portion 31 of the side plate portion 26 and the back plate portion 25. Further, a plurality of bolt holes 32 through which mounting bolts (not shown) are inserted are formed in the mounting portion 23 and the back plate portion 25 at intervals in the vertical direction, and the bracket 13 is attached to the vehicle frame 12 via the mounting bolts. It is designed to be attached.

図１及び図２に示すように、バンド１４は、左右方向に延びる板状に形成され上部ビード２０内に収容されるバンド本体３３と、バンド本体３３に設けられバンド本体３３と還元剤タンク１１の間に介在されるラバー部３４と、側部ビード２１内に収容され側板部２６の係止穴２９に係止されると共にバンド本体３３の端部に締結されるＪボルト３５とからなる。   As shown in FIGS. 1 and 2, the band 14 is formed in a plate shape extending in the left-right direction and is accommodated in the upper bead 20, and the band body 33 provided in the band body 33 and the reducing agent tank 11. And a J bolt 35 which is accommodated in the side bead 21 and locked in the locking hole 29 of the side plate 26 and fastened to the end of the band main body 33.

図５、図６及び図７に示すように、バンド本体３３は、左右方向に延びる金属板をプレス成形してなる。バンド本体３３は、左右方向の中央部３６を上方に湾曲させるように屈曲されており、還元剤タンク１１の上部ビード２０の形状に沿うようになっている。また、バンド本体３３は、前後の両辺から上方に延びるリブ３７を有し、十分な強度に形成されている。バンド本体３３の左右の端部には、Ｊボルト３５を挿通するための挿通孔３８が形成されている。   As shown in FIGS. 5, 6 and 7, the band main body 33 is formed by press-molding a metal plate extending in the left-right direction. The band main body 33 is bent so as to bend the central portion 36 in the left-right direction upward, and follows the shape of the upper bead 20 of the reducing agent tank 11. The band main body 33 has ribs 37 extending upward from both front and rear sides, and is formed with sufficient strength. Insertion holes 38 for inserting the J bolts 35 are formed in the left and right ends of the band main body 33.

図６及び図８に示すように、ラバー部３４は、バンド本体３３が還元剤タンク１１に直接触れて傷つけるのを防ぐためのものであり、溝型に形成され上部ビード２０とバンド本体３３との間に介在される介在部３９と、介在部３９の前後の端から内側に延びて形成されると共に鍵型に形成されバンド本体３３のリブ３７に係止される係止部４０とを備える。   As shown in FIGS. 6 and 8, the rubber portion 34 is for preventing the band main body 33 from directly touching and damaging the reducing agent tank 11, and is formed in a groove shape so that the upper bead 20, the band main body 33, An interposition part 39 interposed therebetween, and a locking part 40 which is formed to extend inward from the front and rear ends of the interposition part 39 and which is formed in a key shape and locked to the rib 37 of the band main body 33. .

図９に示すように、Ｊボルト３５は、一端に形成され側板部２６の係止穴２９に係止されるフック部３０と、他端部に形成されバンド本体３３の端部に締結される雄ねじ部４１と、雄ねじ部４１に隣接する中間部に形成されバンド本体３３の挿通孔３８への挿入深さを規制するための鍔部４２とを備える。フック部３０は、側板部２６の係止穴２９に掛けられたとき先端部４３をブラケット１３の外側に露出させるようになっている。また、フック部３０の先端部４３は、ブラケット１３の外側に突出する側の側面を切り欠く切欠部４４を有し、フック部３０とフック部３０に隣接する他の機器とが干渉しないようになっている。雄ねじ部４１はバンド本体３３の挿通孔３８に挿通される。図１に示すように、雄ねじ部４１にはナット４５が螺合されており、ナット４５を締め付けることでバンド１４に張力が付与されるようになっている。   As shown in FIG. 9, the J bolt 35 is formed at one end and hooked to the locking hole 29 of the side plate portion 26, and is formed at the other end and fastened to the end of the band main body 33. The male thread part 41 and the collar part 42 for restricting the insertion depth to the penetration hole 38 of the band main body 33 formed in the intermediate part adjacent to the male thread part 41 are provided. The hook portion 30 is configured to expose the distal end portion 43 to the outside of the bracket 13 when being hooked in the locking hole 29 of the side plate portion 26. Moreover, the front-end | tip part 43 of the hook part 30 has the notch part 44 which notches the side surface of the side which protrudes on the outer side of the bracket 13, and the hook part 30 and the other apparatus adjacent to the hook part 30 do not interfere. It has become. The male screw portion 41 is inserted through the insertion hole 38 of the band main body 33. As shown in FIG. 1, a nut 45 is screwed into the male screw portion 41, and tension is applied to the band 14 by tightening the nut 45.

次に本実施の形態の作用を述べる。   Next, the operation of this embodiment will be described.

ブラケット１３から還元剤タンク１１を取り外す場合、Ｊボルト３５に螺合されたナット４５を緩め、ブラケット１３からバンド１４を取り外す。これにより、還元剤タンク１１の固定は解除され、ブラケット１３から還元剤タンク１１を取り外すことができる。Ｊボルト３５は車両外側に雄ねじ部４１の先端を向けるように傾斜されているため、ナット４５を容易に緩めることができる。   When removing the reducing agent tank 11 from the bracket 13, the nut 45 screwed into the J bolt 35 is loosened, and the band 14 is removed from the bracket 13. Thereby, fixation of the reducing agent tank 11 is released, and the reducing agent tank 11 can be removed from the bracket 13. Since the J bolt 35 is inclined so that the tip of the male screw portion 41 faces the outside of the vehicle, the nut 45 can be easily loosened.

このようにしてブラケット１３から取り外した還元剤タンク１１を再度ブラケット１３に取り付ける場合、ブラケット１３上に還元剤タンク１１を載置し、バンド本体３３を上部ビード２０内に納めると共にＪボルト３５を側部ビード２１内に納め、ブラケット１３の係止穴２９にフック部３０を掛け、ナット４５を締める。還元剤タンク１１はブラケット１３の底板部２４と背板部２５に押しつけられ、強固に、かつ簡単にブラケット１３に固定される。このとき、バンド１４は１つだけであり、バンド１４の位置決めは上部ビード２０と側部ビード２１とによって容易に、かつ、正確に行うことができるため、還元剤タンク１１を効率よくしっかりと固定できる。また、バンド１４のＪボルト３５は挿通孔３８への挿入深さを鍔部４２によって規制されているため、フック部３０が挿入孔２８の位置に移動して雄ねじ部４１とフック部３０の位置が入れ替わることはなく、ブラケット１３に還元剤タンク１１を取り付けるときブラケット１３の係止穴２９にフック部３０を容易に掛けることができる。   When the reducing agent tank 11 thus removed from the bracket 13 is attached to the bracket 13 again, the reducing agent tank 11 is placed on the bracket 13, the band body 33 is placed in the upper bead 20, and the J bolt 35 is placed on the side. The hook is placed in the retaining hole 29 of the bracket 13 and the nut 45 is tightened. The reducing agent tank 11 is pressed against the bottom plate portion 24 and the back plate portion 25 of the bracket 13 and is firmly and easily fixed to the bracket 13. At this time, there is only one band 14, and positioning of the band 14 can be easily and accurately performed by the upper bead 20 and the side bead 21, so that the reducing agent tank 11 is fixed efficiently and firmly. it can. Further, since the insertion depth of the J bolt 35 of the band 14 into the insertion hole 38 is regulated by the flange portion 42, the hook portion 30 moves to the position of the insertion hole 28 and the positions of the male screw portion 41 and the hook portion 30. The hook portion 30 can be easily hung on the locking hole 29 of the bracket 13 when the reducing agent tank 11 is attached to the bracket 13.

このように、還元剤タンク１１の前側の上面１８に左右方向に延びる溝状の上部ビード２０を形成すると共に還元剤タンク１１の左右の両側面１９に上部ビード２０から斜め後方に延びる溝状の側部ビード２１を形成し、車両フレーム１２に、還元剤タンク１１を載置するための底板部２４を有すると共に還元剤タンク１１の背面を支持するための背板部２５を有するブラケット１３を設け、ブラケット１３上に還元剤タンク１１を前側を車両外側に向けて載置し、還元剤タンク１１にバンド１４の中間部を上部ビード２０及び側部ビード２１内に掛けると共に、ブラケット１３にバンド１４の両端部をバンド１４に張力を付与しつつ係止するものとしたため、小さな還元剤タンク１１でもブラケット１３に固定できる。また、ブラケット１３に還元剤タンク１１を容易に脱着できる。   As described above, the groove-shaped upper beads 20 extending in the left-right direction are formed on the upper surface 18 on the front side of the reducing agent tank 11, and the groove-shaped upper beads 20 extending obliquely rearward from the upper beads 20 are formed on the left and right side surfaces 19 of the reducing agent tank 11. A side bead 21 is formed, and a bracket 13 having a bottom plate portion 24 for mounting the reducing agent tank 11 and a back plate portion 25 for supporting the back surface of the reducing agent tank 11 is provided on the vehicle frame 12. The reducing agent tank 11 is placed on the bracket 13 with the front side facing the outside of the vehicle, and the intermediate portion of the band 14 is hung on the reducing agent tank 11 in the upper bead 20 and the side bead 21, and the band 14 is attached to the bracket 13. Since both ends of the band are locked while applying tension to the band 14, even a small reducing agent tank 11 can be fixed to the bracket 13. Further, the reducing agent tank 11 can be easily detached from the bracket 13.

ブラケット１３には、還元剤タンク１１の左右の側面１９を支持するための側板部２６が一対対向して形成され、バンド１４の両端部が側板部２６に係止されるものとしたため、バンド１４の両端部を還元剤タンク１１の上面１８から近い位置で係止でき、短いバンド１４で容易に還元剤タンク１１を固定できる。   A pair of side plate portions 26 for supporting the left and right side surfaces 19 of the reducing agent tank 11 are formed on the bracket 13 so as to face each other, and both ends of the band 14 are locked to the side plate portions 26. Can be locked at positions close to the upper surface 18 of the reducing agent tank 11, and the reducing agent tank 11 can be easily fixed by the short band 14.

また、ブラケット１３には、バンド１４の両端を係止するための係止穴２９が形成され、バンド１４が、左右方向に延びる板状に形成され上部ビード２０内に収容されるバンド本体３３と、係止穴２９に係止されるフック部３０を有すると共にバンド本体３３の端部に締結される雄ねじ部４１を有するＪボルト３５とを備えるものとしたため、ブラケット１３に還元剤タンク１１を１つのバンド１４で強固に、かつ、容易に固定できる。   The bracket 13 is formed with a locking hole 29 for locking both ends of the band 14, and the band 14 is formed in a plate shape extending in the left-right direction and is accommodated in the upper bead 20. And the J bolt 35 having the male screw portion 41 fastened to the end portion of the band main body 33 and having the hook portion 30 locked to the locking hole 29, the reducing agent tank 11 is attached to the bracket 13. The two bands 14 can be firmly and easily fixed.

なお、係止穴２９は側板部２６を貫通して形成されるものとしたが、Ｊボルト３５を掛けられれば必ずしも貫通していなくともよい。   Although the locking hole 29 is formed so as to penetrate the side plate portion 26, it does not necessarily have to penetrate as long as the J bolt 35 can be hooked.

また、還元剤は尿素水からなるものとしたが、他の液体からなるものであってもよい。   Moreover, although the reducing agent is made of urea water, it may be made of another liquid.

還元剤タンク１１は樹脂製タンクには限定はされず、金属製タンクであっても良い。   The reducing agent tank 11 is not limited to a resin tank, and may be a metal tank.

係止穴２９は、三角形に形成されるものとしたが、バンド１４の延長方向に角部４６を向けるものであれば四角形等の多角形や扇型であってもよく、他の形状であってもよい。   The locking hole 29 is formed in a triangular shape, but may be a polygonal shape such as a rectangle or a fan shape as long as the corner portion 46 is directed in the extending direction of the band 14, or other shapes. May be.

１１ 還元剤タンク
１２ 車両フレーム
１３ ブラケット
１４ バンド
１５ 還元剤補給口
１８ 上面
１９ 側面
２０ 上部ビード
２１ 側部ビード
２４ 底板部
２５ 背板部
２６ 側板部
２９ 係止穴
３０ フック部
３３ バンド本体
３５ Ｊボルト
４１ 雄ねじ部 11 Reducing agent tank 12 Vehicle frame 13 Bracket 14 Band 15 Reducing agent supply port 18 Upper surface 19 Side surface 20 Upper bead 21 Side bead 24 Bottom plate portion 25 Back plate portion 26 Side plate portion 29 Locking hole 30 Hook portion 33 Band body 35 J bolt 41 Male thread

Claims (3)

車両フレームに還元剤タンクを脱着可能に固定する還元剤タンクの固定構造において、車両外側に向く上記還元剤タンク前側の上面に左右方向に延びる溝状の上部ビードを形成すると共に還元剤タンクの左右の両側面に上記上部ビードから斜め後方に延びる溝状の側部ビードを形成し、上記車両フレームに、上記還元剤タンクを載置するための底板部を有すると共に還元剤タンクの背面を支持するための背板部を有するブラケットを設け、該ブラケット上に上記還元剤タンクを前側を車両外側に向けて載置し、該還元剤タンクにバンドの中間部を上記上部ビード及び上記側部ビード内に掛けると共に、上記ブラケットに上記バンドの両端部をバンドに張力を付与しつつ係止し、上記側部ビードが、上記バンドの両端部を係止したときの上記バンドの端部の位置まで延びて形成されていることを特徴とする還元剤タンクの固定構造。 In the reducing agent tank fixing structure for detachably fixing the reducing agent tank to the vehicle frame, a groove-shaped upper bead extending in the left-right direction is formed on the upper surface of the reducing agent tank front side facing the vehicle outer side, Groove-shaped side beads extending obliquely rearward from the upper bead are formed on both sides of the vehicle, and the vehicle frame has a bottom plate portion for mounting the reducing agent tank and supports the back surface of the reducing agent tank. A bracket having a back plate portion is provided, and the reducing agent tank is placed on the bracket with the front side facing the outside of the vehicle, and an intermediate portion of a band is placed on the reducing agent tank in the upper bead and the side bead. together subjected to, and engaging while applying a tension to the band to both ends of the band to the bracket, said side bead, the bar when engaged with both ends of the band Fixing structure of the reducing agent tank, characterized in that it is formed to extend to the position of the end of de. 上記ブラケットには、上記還元剤タンクの左右の側面を支持するための側板部が一対対向して形成され、上記バンドの両端部が上記側板部に係止される請求項１記載の還元剤タンクの固定構造。   2. The reducing agent tank according to claim 1, wherein the bracket is formed with a pair of opposing side plate portions for supporting the left and right side surfaces of the reducing agent tank, and both end portions of the band are engaged with the side plate portion. Fixed structure. 上記ブラケットには、上記バンドの両端を係止するための係止穴が形成され、上記バンドが、左右方向に延びる板状に形成され上記上部ビード内に収容されるバンド本体と、上記係止穴に係止されるフック部を有すると共に上記バンド本体の端部に締結される雄ねじ部を有するＪボルトとを備えた請求項１又は２記載の還元剤タンクの固定構造。   The bracket is formed with a locking hole for locking both ends of the band, and the band is formed in a plate shape extending in the left-right direction and accommodated in the upper bead, and the locking 3. The reducing agent tank fixing structure according to claim 1, further comprising a J-bolt having a hook portion locked to the hole and a male screw portion fastened to an end portion of the band main body.
JP2009292964A 2009-12-24 2009-12-24 Reducing agent tank fixing structure Expired - Fee Related JP5372727B2 (en)

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