JP2010163773A - Construction machine - Google Patents

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JP2010163773A
JP2010163773A JP2009005805A JP2009005805A JP2010163773A JP 2010163773 A JP2010163773 A JP 2010163773A JP 2009005805 A JP2009005805 A JP 2009005805A JP 2009005805 A JP2009005805 A JP 2009005805A JP 2010163773 A JP2010163773 A JP 2010163773A
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oil tank
tank chamber
outside air
port
oil
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JP5209511B2 (en
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Nobuyuki Tomida
庸公 冨田
Hideaki Nasu
英彰 那須
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide construction machine capable of cooling an oil tank effectively by a compact and simple structure and preventing temperature of oil in the oil tank from rising excessively. <P>SOLUTION: This construction machine is constituted by providing an air exhaust port 14d and an outside air introduction port 14e in an upper part of an oil tank chamber 14, respectively, and attaching an inlet fan 24 for taking in outside air and introducing it into the oil tank chamber 14 through the outside air introduction port 14e to a section close to the outside air introduction port 14e. The air exhaust port 14d is covered with a duct member 19 provided with an air passage communicating the inside and the outside of the oil tank 14 mutually. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、杭打機や油圧ショベルなどの油圧で作動する建設機械に係り、特に、オイル（作動油）を貯留したオイルタンクを、エンジン室とは別に独立した状態で区画されたオイルタンク室の内部に収容した建設機械におけるオイルタンクの冷却構造に関する。   The present invention relates to a construction machine that operates by hydraulic pressure, such as a pile driver or a hydraulic excavator, and in particular, an oil tank chamber in which an oil tank storing oil (hydraulic oil) is partitioned separately from an engine chamber. The present invention relates to a cooling structure for an oil tank in a construction machine housed inside the machine.

杭打機や油圧ショベルなどの建設機械では、エンジンにより駆動される油圧ポンプの昇温、油圧シリンダなどに供給するオイルの昇温を抑えるため、エンジンのラジエータ部分にオイルクーラを配置し、エンジンで駆動される冷却ファンによって冷却空気を流通させることにより、ラジエータと共にオイルクーラを冷却するようにしている。   In construction machines such as pile drivers and hydraulic excavators, an oil cooler is installed in the radiator section of the engine to suppress the temperature rise of the hydraulic pump driven by the engine and the temperature rise of the oil supplied to the hydraulic cylinder. The cooling air is circulated by the driven cooling fan to cool the oil cooler together with the radiator.

また、エンジン室から区画したポンプ室内に油圧ポンプを収容したものでは、ポンプ室内に貫流ファンを設けて外気を取り込むことにより、ポンプ室内の温度上昇を抑えるようにしている（例えば、特許文献１参照。）。   Further, in the case where the hydraulic pump is housed in the pump chamber partitioned from the engine chamber, a temperature increase in the pump chamber is suppressed by providing a cross-flow fan in the pump chamber and taking in outside air (see, for example, Patent Document 1). .)

特開２００７−２１１６１３号公報JP 2007-211163 A

しかし、夏場の外気温が高いときにも十分にオイルを冷却するためには、大型のオイルクーラを設置する必要があり、また、上述の特許文献１のものでは、ポンプ室内に貫流ファンを設けていることから、ポンプ室の容積が大きくなるという問題があった。   However, in order to sufficiently cool the oil even when the outdoor temperature is high in summer, it is necessary to install a large oil cooler. In the above-mentioned Patent Document 1, a cross-flow fan is provided in the pump chamber. Therefore, there is a problem that the volume of the pump chamber becomes large.

そこで本発明は、小型かつ簡単な構造でオイルタンクを効果的に冷却することができ、オイルタンク内のオイルの温度が過度に上昇することを防止できる建設機械を提供することを目的としている。   Therefore, an object of the present invention is to provide a construction machine that can effectively cool an oil tank with a small and simple structure and can prevent the temperature of oil in the oil tank from rising excessively.

上記目的を達成するため、本発明の建設機械は、下部走行体の上部に設けた上部旋回体に、オイルタンクを収容するオイルタンク室を備えた建設機械において、前記オイルタンク室内に外気を導入する外気導入口と、前記オイルタンク室の空気を該オイルタンク室の上部から外部に排出する排気口とを設けると共に、該外気導入口から外気を前記オイルタンク室内に取り込んで前記排気口からオイルタンク室内の空気を排出する空気流れを形成するためのファンを前記オイルタンク室の上面に設けたことを特徴としている。   In order to achieve the above object, a construction machine according to the present invention introduces outside air into the oil tank chamber in a construction machine provided with an oil tank chamber for storing an oil tank in an upper swing body provided at an upper portion of a lower traveling body. And an exhaust port through which the air in the oil tank chamber is discharged from the upper part of the oil tank chamber to the outside, and the outside air is taken into the oil tank chamber from the outside air inlet port and oil is discharged from the exhaust port. A fan for forming an air flow for discharging the air in the tank chamber is provided on the upper surface of the oil tank chamber.

さらに、本発明の建設機械は、前記オイルタンク室の天板に前記排気口と前記外気導入口とをそれぞれ開口させ、前記天板の上面に、前記外気導入口の上方を覆い、かつ、側方が開口した吸気ダクトを設け、該吸気ダクトの側方開口部に前記ファンを設けるとともに、前記外気導入口のオイルタンク室内側に、該外気導入口から取り込んだ外気を前記オイルタンク室の下部にガイドするガイド筒を設けたこと、あるいは、前記外気導入口を前記オイルタンク室の下部に設け、前記排気口を前記オイルタンク室の天板に開口させるとともに、前記天板の上面に、前記排気口の上方を覆い、かつ、側方が開口した排気ダクトを設け、該排気ダクトの側方開口部に前記ファンを設けたことを特徴とし、さらに、前記オイルタンク室内の温度又はオイルの温度をセンサで検出し、検出した温度があらかじめ設定された温度より高くなったときに前記ファンを作動させることを特徴としている。   Furthermore, the construction machine of the present invention opens the exhaust port and the outside air introduction port on the top plate of the oil tank chamber, covers the top surface of the top plate above the outside air introduction port, and An intake duct having an open side is provided, the fan is provided in a side opening of the intake duct, and the outside air taken in from the outside air introduction port is placed in the lower part of the oil tank chamber on the oil tank chamber side of the outside air introduction port. Provided with a guide tube for guiding to the outside, or the outside air introduction port is provided at a lower portion of the oil tank chamber, the exhaust port is opened at a top plate of the oil tank chamber, and An exhaust duct that covers the upper side of the exhaust port and that is open at a side is provided, and the fan is provided at a side opening of the exhaust duct. Detecting a temperature sensor, the detected temperature is characterized by operating the fan when it is higher than the preset temperature.

本発明の建設機械によれば、ファンを作動させることにより、オイルタンク室内に外気を取り込みつつ、温度が高いオイルタンク室内上部の空気を排気口から外部に排気することができるので、作業時にオイルが温度上昇してもオイルタンクを介してオイルを効率よく冷却することができる。特に、オイルタンク室の上面にファンを設けることにより、オイルタンク室の容積を小さく抑えることができる。   According to the construction machine of the present invention, by operating the fan, the air in the upper part of the oil tank room having a high temperature can be exhausted from the exhaust port to the outside while taking in the outside air into the oil tank room. Even if the temperature rises, the oil can be efficiently cooled through the oil tank. In particular, by providing a fan on the upper surface of the oil tank chamber, the volume of the oil tank chamber can be kept small.

本発明の第１形態例を示すオイルタンク室の側面図である。It is a side view of the oil tank chamber which shows the 1st form example of this invention. 同じくオイルタンク室の正面図である。It is a front view of an oil tank chamber similarly. 同じくオイルタンク室の平面図である。It is a top view of an oil tank chamber similarly. 同じくオイルタンク室の分解斜視図である。It is a disassembled perspective view of an oil tank chamber similarly. 同じく杭打機の要部側面図である。It is a principal part side view of a pile driver similarly. 同じく杭打機の平面図である。It is a top view of a pile driver similarly. 同じく杭打機の側面図である。It is a side view of a pile driver similarly. 本発明の第２形態例を示すオイルタンク室の正面図である。It is a front view of the oil tank chamber which shows the 2nd form example of this invention. 同じくオイルタンク室の側面図である。It is a side view of an oil tank chamber similarly. 同じくオイルタンク室の平面図である。It is a top view of an oil tank chamber similarly. 同じくオイルタンク室の底面図である。It is a bottom view of an oil tank chamber similarly.

まず、図１乃至図７に示す本発明の建設機械を杭打機に適用した第１形態例における杭打機１０は、クローラ１１ａを備えた下部走行体１１と、該下部走行体１１上に旋回可能に設けられた上部旋回体１２とを備え、上部旋回体１２の前部に、リーダ１３を起伏可能に設けている。上部旋回体１２は、メインフレーム１２ａ上の右側後方にオイルタンク室１４が、右側前方に運転台１５がそれぞれ設けられ、左側には、エンジンや油圧ポンプなどを収容したエンジン室１６が設けられている。   First, a pile driving machine 10 according to a first embodiment in which the construction machine of the present invention shown in FIGS. 1 to 7 is applied to a pile driving machine includes a lower traveling body 11 provided with a crawler 11a, and the lower traveling body 11 on the lower traveling body 11. The upper revolving body 12 is provided so as to be able to turn, and a leader 13 is provided at the front portion of the upper revolving body 12 so as to be able to rise and fall. The upper swing body 12 is provided with an oil tank chamber 14 on the right rear side on the main frame 12a, an cab 15 on the right front side, and an engine chamber 16 containing an engine, a hydraulic pump and the like on the left side. Yes.

オイルタンク１７を収容するオイルタンク室１４は、平面視長方形状の天板１４ａ及び底板１４ｂと、四周壁１４ｃとで形成された箱状のものであって、天板１４ａには、矩形の開口部からなる排気口１４ｄと外気導入口１４ｅとがそれぞれ開口し、車体外側の壁面には点検扉１８が設けられている。   The oil tank chamber 14 that accommodates the oil tank 17 is a box-like shape formed by a top plate 14a and a bottom plate 14b having a rectangular shape in plan view, and a four-wall wall 14c. The top plate 14a has a rectangular opening. An exhaust port 14d and an outside air introduction port 14e are respectively opened, and an inspection door 18 is provided on the wall surface outside the vehicle body.

前記排気口１４ｄは、ダクト部材１９で覆われている。このダクト部材１９は、前記排気口１４ｄよりも大きな取付板１９ａと、該取付板１９ａの中央に開口して前記排気口１４ｄに連通する空気流通口１９ｂと、該空気流通口１９ｂの上方を覆うと共に側面に側面開口部１９ｃを備えた偏平なトンネル状のカバー部材１９ｄと、該カバー部材１９ｄの前記側面開口部１９ｃと前記空気流通口１９ｂとの間で前記取付板１９ａから上方に向かって立ち上がってから側面開口部１９ｃの方向に傾斜し、傾斜部上端縁と前記カバー部材１９ｄの天板下面との間に空気流路を形成する堰板２０とを一体に備えている。取付板１９ａの外周部には複数のボルト孔が設けられ、該ボルト孔に挿通したボルト２１によって、天板１４ａの上面にダクト部材１９が固定される。さらに、オイルタンク１７の給油口１７ａの上方位置となるカバー部材１９ｄの天板中央部には、前記オイルタンク１７にオイルを供給するための給油口１９ｅと、該給油口１９ｅを塞ぐ給油蓋２２とが設けられ、給油蓋２２は、ヒンジ２３を介して給油口１９ｅを開閉可能に形成されている。   The exhaust port 14 d is covered with a duct member 19. The duct member 19 covers a mounting plate 19a larger than the exhaust port 14d, an air circulation port 19b that opens to the center of the mounting plate 19a and communicates with the exhaust port 14d, and an upper side of the air circulation port 19b. And a flat tunnel-shaped cover member 19d having a side opening 19c on the side surface, and rises upward from the mounting plate 19a between the side opening 19c of the cover member 19d and the air circulation port 19b. And a weir plate 20 that is inclined in the direction of the side opening 19c and forms an air flow path between the upper edge of the inclined portion and the lower surface of the top plate of the cover member 19d. A plurality of bolt holes are provided in the outer peripheral portion of the mounting plate 19a, and the duct member 19 is fixed to the upper surface of the top plate 14a by bolts 21 inserted through the bolt holes. Further, an oil supply port 19e for supplying oil to the oil tank 17 and an oil supply lid 22 for closing the oil supply port 19e are provided at the center of the top plate of the cover member 19d, which is located above the oil supply port 17a of the oil tank 17. The oil filler lid 22 is formed so as to be able to open and close the oil filler opening 19e via the hinge 23.

また、前記天板１４ａの上面には、前記外気導入口１４ｅの上方及び吸気ファン２４の周囲を覆う吸気ダクト２５が設けられている。この吸気ダクト２５は、天板１４ａの上面に固定される下部フランジ部２５ａと、上部旋回体１２の右側面側に立設したファン取付部２５ｂと、該ファン取付部２５ｂに開口した外気取入口２５ｃと、下部フランジ部２５ａから立ち上がって前記外気導入口１４ｅの周囲を覆う側面カバー部２５ｄと、ファン取付部２５ｂの上面部分から下方に向かって傾斜した上面カバー部２５ｅとで形成され、吸気ファン２４は、前記外気取入口２５ｃの内周部に側方を向いた状態で設けられている。また、外気導入口１４ｅには、オイルタンク室１４内のオイルタンク１７の下方に延びるガイド筒２６が挿入され、ガイド筒２６の上部フランジ２６ａが、下部フランジ部２５ａと共締めされて天板１４ａに固定されている。   An air intake duct 25 is provided on the top surface of the top plate 14a so as to cover the outside air inlet 14e and the periphery of the air intake fan 24. The intake duct 25 includes a lower flange portion 25a that is fixed to the upper surface of the top plate 14a, a fan mounting portion 25b that is erected on the right side surface of the upper swing body 12, and an outside air inlet that opens to the fan mounting portion 25b. 25c, a side cover portion 25d that rises from the lower flange portion 25a and covers the outside air inlet 14e, and an upper surface cover portion 25e that is inclined downward from the upper surface portion of the fan mounting portion 25b. 24 is provided in the state which faced the side to the inner peripheral part of the said external air intake 25c. Further, a guide cylinder 26 extending below the oil tank 17 in the oil tank chamber 14 is inserted into the outside air introduction port 14e, and the upper flange 26a of the guide cylinder 26 is fastened together with the lower flange portion 25a so that the top plate 14a. It is fixed to.

このように形成したオイルタンク室１４を備えた杭打機１０は、夏場の外気温が高いときに油圧オーガ等のフロント装置を駆動することによってオイルの温度が上昇し、オイルタンク１７の外面温度が高くなった際に、運転台１５に設けたスイッチにより前記吸気ファン２４を作動させたり、あるいは、オイルタンク室１４内の温度又はオイルの温度をセンサで検出し、該センサで検出した温度があらかじめ設定された温度より高くなったときに自動的に前記吸気ファン２４を作動させたりすることにより、オイルタンク室１４内に外気を取り込んでオイルタンク１７を冷却することができる。   In the pile driving machine 10 having the oil tank chamber 14 formed in this way, the temperature of the oil rises by driving a front device such as a hydraulic auger when the outside air temperature is high in summer, and the outer surface temperature of the oil tank 17 is increased. When the air temperature rises, the intake fan 24 is operated by a switch provided on the cab 15 or the temperature in the oil tank chamber 14 or the temperature of the oil is detected by a sensor, and the temperature detected by the sensor is By automatically operating the intake fan 24 when the temperature becomes higher than a preset temperature, it is possible to take outside air into the oil tank chamber 14 and cool the oil tank 17.

すなわち、吸気ファン２４が作動すると、吸気ダクト２５の外気取入口２５ｃから吸気ダクト２５内に取り込まれた外気は、外気導入口１４ｅからガイド筒２６を経てオイルタンク室１４の下部に至る空気流路Ａ１にガイドされてオイルタンク室１４の下部に導入される。一方、オイルタンク室１４内の温度上昇した空気は、オイルタンク室１４の下部に導入された外気により押し出され、オイルタンク室１４の上部に形成される排気口１４ｄから空気流通口１９ｂ，堰板２０の上方を経て側面開口部１９ｃに至る上部空気流路Ａ２を通って強制的に外部に排出される。したがって、オイルタンク室１４に熱気が籠もることがなく、外気によってオイルタンク室１４を効率よく確実に冷却することができ、オイルの温度が過度に上昇することを防止できる。   That is, when the intake fan 24 is operated, the outside air taken into the intake duct 25 from the outside air intake port 25c of the intake duct 25 passes from the outside air introduction port 14e through the guide cylinder 26 to the lower part of the oil tank chamber 14. It is guided by A1 and introduced into the lower part of the oil tank chamber 14. On the other hand, the air whose temperature has risen in the oil tank chamber 14 is pushed out by the outside air introduced into the lower portion of the oil tank chamber 14, and the air circulation port 19 b and the weir plate from the exhaust port 14 d formed in the upper portion of the oil tank chamber 14. The air is forcibly discharged to the outside through the upper air flow path A2 that reaches the side opening 19c through 20 above. Therefore, no hot air is trapped in the oil tank chamber 14, the oil tank chamber 14 can be efficiently and reliably cooled by the outside air, and the oil temperature can be prevented from excessively rising.

これにより、オイルタンク１７の温度上昇を防ぎ、夏場の暑い時期であってもオイルがオーバーヒートすることを防止でき、オイルクーラの小型化も図れる。また、熱気はオイルタンク室１４内を上昇することから、排気側の前記上部空気流路Ａ２をオイルタンク室１４の天板１４ａに設けることにより、熱気を上部空気流路Ａ２から良好に外部に排出することができる。さらに、スペースに制約のある中型又は小型の杭打機であっても、吸気ファン２４をオイルタンク室１４の上面に設けていることから、オイルタンク室１４の容積を大型化することなく、外気を効果的に流通させることができ、オイルタンク室１４内を良好に冷却できる。   Thereby, the temperature rise of the oil tank 17 can be prevented, the oil can be prevented from overheating even in the hot summer season, and the oil cooler can be downsized. Further, since hot air rises in the oil tank chamber 14, the upper air flow path A2 on the exhaust side is provided on the top plate 14a of the oil tank chamber 14 so that the hot air can be satisfactorily discharged from the upper air flow path A2. Can be discharged. Furthermore, even in a medium or small pile driver with limited space, the intake fan 24 is provided on the upper surface of the oil tank chamber 14, so that the volume of the oil tank chamber 14 can be increased without increasing the volume of the outside air. Can be circulated effectively, and the inside of the oil tank chamber 14 can be cooled well.

また、前記外気導入口１４ｅの上方を吸気ダクト２５で覆い、該吸気ダクト２５の側方に開口した外気取入口２５ｃに前記吸気ファン２４を設けると共に、前記排気口１４ｄをダクト部材１９で覆い、上部空気流路Ａ２の途中に堰板２０を設けることにより、オイルタンク室１４内に雨水が流入することを防止できる。なお、堰板２０の一部を上方に延出してカバー部材１９ｄの下面に接合することにより、堰板２０を補強することができる。   Further, the upper portion of the outside air inlet 14e is covered with an intake duct 25, the intake fan 24 is provided at an outside air intake 25c opened to the side of the intake duct 25, and the exhaust port 14d is covered with a duct member 19. By providing the weir plate 20 in the middle of the upper air flow path A2, it is possible to prevent rainwater from flowing into the oil tank chamber. In addition, the dam plate 20 can be reinforced by extending a part of the dam plate 20 upward and joining it to the lower surface of the cover member 19d.

また、本形態例では、ダクト部材１９を排気口１４ｄの上方に固定すると共に、ダクト部材１９に給油口１９ｅ及び給油蓋２２を設けた構成としたが、ダクト部材１９の一側縁をヒンジを介して天板１４ａの上面に開閉可能な状態で取り付けることもできる。   In this embodiment, the duct member 19 is fixed above the exhaust port 14d, and the duct member 19 is provided with the fuel filler port 19e and the fuel filler lid 22. However, one side edge of the duct member 19 is hinged. It can also be attached to the top surface of the top plate 14a in a state that can be opened and closed.

特に、スペースに制約のある中型又は小型の杭打機で、ラジエータ用ファンによって空気の流れが得られるエンジン室１６とは別の側に独立したオイルタンク室１４を配置した建設機械で、前記ラジエータ用ファンによる気流を得られないオイルタンク室１４の場合であっても、オイルタンク室１４内に外気を効果的に取り入れることができるので、オイルタンク室１４を大型化することなく、オイルタンク１７を良好に冷却することができる。   In particular, the radiator is a construction machine in which an oil tank chamber 14 is arranged on a side different from the engine chamber 16 where a flow of air is obtained by a radiator fan in a medium-sized or small pile driver with limited space. Even in the case of the oil tank chamber 14 in which the air flow by the fan is not obtained, the outside air can be effectively taken into the oil tank chamber 14, so that the oil tank 17 can be made without increasing the size of the oil tank chamber 14. Can be cooled satisfactorily.

図８乃至図１１に示す本発明の第２形態例におけるオイルタンク室３０は、天板１４ａに矩形の開口部からなる排気口１４ｆが設けられると共に、オイルタンク１７の給油口１７ａの上方位置に給油蓋３１を有する給油口１４ｇが設けられ、さらに、排気口１４ｆの上方に排気ファン３２を備えた排気ダクト３３を設けている。   The oil tank chamber 30 in the second embodiment of the present invention shown in FIGS. 8 to 11 is provided with an exhaust port 14f having a rectangular opening in the top plate 14a and at a position above the oil supply port 17a of the oil tank 17. An oil supply port 14g having an oil supply lid 31 is provided, and an exhaust duct 33 having an exhaust fan 32 is provided above the exhaust port 14f.

排気ダクト３３は、前記第１形態例で示した吸気ダクト２５と同様の構造を有しており、天板１４ａの上面に固定される下部フランジ部３３ａと、上部旋回体１２の右側面側に立設したファン取付部３３ｂと、該ファン取付部３３ｂに側方に向けた開口した排気口３３ｃと、下部フランジ部３３ａから立ち上がって前記排気口１４ｆの周囲を覆う側面カバー部３３ｄと、ファン取付部３３ｂの上面部分から下方に向かって傾斜した上面カバー部３３ｅとで形成され、排気ファン３２は、前記排気口３３ｃの内周部に側方を向いた状態で設けられている。また、オイルタンク室１４の底板１４ｂの一部には、グレーチングなどの通気性を有するメッシュ状の板材によって外気導入口１４ｅが設けられている。   The exhaust duct 33 has the same structure as that of the intake duct 25 shown in the first embodiment. The exhaust duct 33 has a lower flange portion 33a fixed to the upper surface of the top plate 14a and a right side surface of the upper swing body 12. An upright fan mounting portion 33b, an exhaust port 33c that opens laterally toward the fan mounting portion 33b, a side cover portion 33d that rises from the lower flange portion 33a and covers the periphery of the exhaust port 14f, and a fan mounting The exhaust fan 32 is provided in a state of being directed to the inner peripheral portion of the exhaust port 33c. The upper cover portion 33e is inclined downward from the upper surface portion of the portion 33b. In addition, an outside air inlet 14e is provided in a part of the bottom plate 14b of the oil tank chamber 14 by a mesh-like plate material having air permeability such as grating.

本形態例では、排気ファン３２の作動により、オイルタンク室１４内の温度上昇した空気が排気口１４ｆを通って排気ダクト３３内に吸引され、排気口１４ｆから外部に強制的に排出されると共に、外気導入口１４ｅを通ってオイルタンク室１４の下部から外気が導入される空気流路Ａ３によってオイルタンク１７が冷却される。   In the present embodiment, by the operation of the exhaust fan 32, the air whose temperature has increased in the oil tank chamber 14 is sucked into the exhaust duct 33 through the exhaust port 14f and forcibly discharged to the outside from the exhaust port 14f. The oil tank 17 is cooled by the air flow path A3 through which the outside air is introduced from the lower part of the oil tank chamber 14 through the outside air introduction port 14e.

したがって、前記形態例と同様に、オイルの温度が上昇したときに排気ファン３２を作動させることにより、オイルタンク室１４に熱気が籠もることがなく、外気によってオイルタンク室１４を効率よく確実に冷却することができ、オイルの温度が過度に上昇することを防止できる。   Therefore, similarly to the above-described embodiment, by operating the exhaust fan 32 when the temperature of the oil rises, hot air is not trapped in the oil tank chamber 14, and the oil tank chamber 14 is efficiently and reliably secured by the outside air. It is possible to prevent the oil temperature from rising excessively.

尚、本発明は、上述の形態例のように杭打機の適用されるものに限らず、油圧ショベルやブルドーザーなど、その他の各種建設機械にも適用することができる。また、外気導入口や吸気ダクト、排気口や排気ダクトの構造や形状は特に限定されるものではなく、例えば、外気導入口や排気口が円形であってもよく、同様に、吸気ダクトや排気ダクトが円筒状であってもよい。   In addition, this invention is applicable not only to what a pile driving machine is applied like the above-mentioned example but to other various construction machines, such as a hydraulic shovel and a bulldozer. Further, the structure and shape of the outside air introduction port, the intake duct, the exhaust port and the exhaust duct are not particularly limited. For example, the outside air introduction port and the exhaust port may be circular. The duct may be cylindrical.

１０…杭打機、１１…下部走行体、１１ａ…クローラ、１２…上部旋回体、１２ａ…メインフレーム、１３…リーダ、１４…オイルタンク室、１４ａ…天板、１４ｂ…底板、１４ｃ…四周壁、１４ｄ，１４ｆ…排気口、１４ｅ…外気導入口、１４ｇ…給油口、１５…運転台、１６…エンジン室、１７…オイルタンク、１７ａ…給油口、１８…点検扉、１９…ダクト部材、１９ａ…取付板、１９ｂ…空気流通口、１９ｃ…側面開口部、１９ｄ…カバー部材、１９ｅ…給油口、２０…堰板、２１…ボルト、２２…給油蓋、２３…ヒンジ、２４…吸気ファン、２５…吸気ダクト、２５ａ…下部フランジ部、２５ｂ…ファン取付部、２５ｃ…外気取入口、２５ｄ…側面カバー部、２５ｅ…上面カバー部、２６…ガイド筒、３０…オイルタンク室、３１…給油蓋、３２…排気ファン、３３…排気ダクト、３３ａ…下部フランジ部、３３ｂ…ファン取付部、３３ｃ…排気口、３３ｄ…側面カバー部、３３ｅ…上面カバー部   DESCRIPTION OF SYMBOLS 10 ... Pile driver, 11 ... Lower traveling body, 11a ... Crawler, 12 ... Upper revolving body, 12a ... Main frame, 13 ... Leader, 14 ... Oil tank room, 14a ... Top plate, 14b ... Bottom plate, 14c ... Four round walls 14d, 14f ... exhaust port, 14e ... outside air introduction port, 14g ... fueling port, 15 ... cab, 16 ... engine room, 17 ... oil tank, 17a ... fueling port, 18 ... inspection door, 19 ... duct member, 19a DESCRIPTION OF SYMBOLS ... Mounting plate, 19b ... Air distribution port, 19c ... Side opening, 19d ... Cover member, 19e ... Filling port, 20 ... Dam plate, 21 ... Bolt, 22 ... Filling lid, 23 ... Hinge, 24 ... Intake fan, 25 ... intake duct, 25a ... lower flange part, 25b ... fan mounting part, 25c ... outside air intake, 25d ... side cover part, 25e ... top cover part, 26 ... guide cylinder, 30 ... oil tank chamber, 31 Fueling lid, 32 ... exhaust fan, 33 ... exhaust duct, 33a ... lower flange portion, 33b ... fan mounting portion, 33c ... exhaust port, 33d ... side cover portion, 33e ... top cover portion

Claims (4)

下部走行体の上部に設けた上部旋回体に、オイルタンクを収容するオイルタンク室を備えた建設機械において、前記オイルタンク室内に外気を導入する外気導入口と、前記オイルタンク室内の空気を該オイルタンク室の上部から外部に排出する排気口とを設けると共に、該外気導入口から外気を前記オイルタンク室内に取り込んで前記排気口からオイルタンク室内の空気を外部に排出する空気流れを形成するためのファンを前記オイルタンク室の上面に設けたことを特徴とする建設機械。 In a construction machine having an oil tank chamber for storing an oil tank in an upper swing body provided at an upper portion of a lower traveling body, an outside air inlet for introducing outside air into the oil tank chamber, and air in the oil tank chamber An exhaust port for discharging the oil tank chamber from the upper part to the outside is provided, and outside air is taken into the oil tank chamber from the outside air inlet port to form an air flow for discharging the air in the oil tank chamber to the outside from the exhaust port. A construction machine characterized in that a fan is provided on the upper surface of the oil tank chamber. 前記オイルタンク室の天板に前記排気口と前記外気導入口とをそれぞれ開口させ、前記天板の上面に、前記外気導入口の上方を覆い、かつ、側方が開口した吸気ダクトを設け、該吸気ダクトの側方開口部に前記ファンを設けるとともに、前記外気導入口のオイルタンク室内側に、該外気導入口から取り込んだ外気を前記オイルタンク室の下部にガイドするガイド筒を設けたことを特徴とする請求項１記載の建設機械。 Opening the exhaust port and the outside air introduction port to the top plate of the oil tank chamber, respectively, and providing an intake duct that covers the upper side of the outside air introduction port on the top surface of the top plate and is open at the side, The fan is provided at a side opening of the intake duct, and a guide cylinder for guiding outside air taken in from the outside air introduction port to a lower portion of the oil tank chamber is provided on the inside of the outside air introduction port. The construction machine according to claim 1. 前記外気導入口を前記オイルタンク室の下部に設け、前記排気口を前記オイルタンク室の天板に開口させるとともに、前記天板の上面に、前記排気口の上方を覆い、かつ、側方が開口した排気ダクトを設け、該排気ダクトの側方開口部に前記ファンを設けたことを特徴とする請求項１記載の建設機械。 The outside air introduction port is provided in the lower part of the oil tank chamber, the exhaust port is opened to the top plate of the oil tank chamber, the upper surface of the top plate covers the upper side of the exhaust port, and the side is The construction machine according to claim 1, wherein an open exhaust duct is provided, and the fan is provided in a side opening of the exhaust duct. 前記オイルタンク室内の温度又はオイルの温度をセンサで検出し、検出した温度があらかじめ設定された温度より高くなったときに前記ファンを作動させることを特徴とする請求項１乃至３のいずれか１項記載の建設機械。 The temperature in the oil tank chamber or the temperature of oil is detected by a sensor, and the fan is operated when the detected temperature becomes higher than a preset temperature. The construction machine described in the item.
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