JPH0527237U - Engine cooling system for construction machinery - Google Patents
Engine cooling system for construction machineryInfo
- Publication number
- JPH0527237U JPH0527237U JP2123591U JP2123591U JPH0527237U JP H0527237 U JPH0527237 U JP H0527237U JP 2123591 U JP2123591 U JP 2123591U JP 2123591 U JP2123591 U JP 2123591U JP H0527237 U JPH0527237 U JP H0527237U
- Authority
- JP
- Japan
- Prior art keywords
- oil cooler
- radiator
- oil
- cooling device
- hinge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
(57)【要約】
【目的】 ラジエ−タ５Ａ，オイルク−ラ５Ｂの冷却用
チュ−ブ、フィン等の回りに付着したゴミの清掃を容易
化する為の構成を提供する。
【構成】 エンジン冷却ファンの前方にラジエ−タ及び
オイルク−ラをこの順序に重ね合わせに配列し、更にラ
ジエ−タとオイルク−ラの取付面の一方に蝶番等を用い
て該オイルク−ラをラジエ−タに対して角度αだけ回転
可能に支持した冷却装置において、オイルク−ラへの給
排配管の中間にスイベルジョイントを設け、このスイベ
ルジョイントの回転中心線と前記蝶番の回転中心を一致
させた。
(57) [Summary] [PROBLEM] To provide a structure for facilitating cleaning of dust attached around the radiator 5A, oil cooler 5B cooling tubes, fins and the like. [Structure] A radiator and an oil cooler are arranged in front of the engine cooling fan so as to be superposed in this order, and the oil cooler is attached to one of the mounting surfaces of the radiator and the oil cooler by using a hinge or the like. In a cooling device that is rotatably supported by an angle α with respect to a radiator, a swivel joint is provided in the middle of the supply / discharge pipe to the oil cooler, and the rotation center line of this swivel joint and the rotation center of the hinge are aligned. It was
Description
【０００１】[0001]
本考案は建設機械のエンジン冷却装置に関するものである。 The present invention relates to an engine cooling device for a construction machine.
【０００２】[0002]
図５は公知油圧ショベルを示し、１は油圧ショベル本体、２は上部旋回体、３ は下部走行体、４は動力源であるエンジン、５は冷却装置（ラジエ−タ及びオイ ルク−ラの組合せ）を示す。また６はエンジン上部のエンジンフ−ド、７は冷却 装置前方のサイドカバ−、８はオペレ−タキャブ、９は機械室を示す。 FIG. 5 shows a known hydraulic excavator, 1 is a hydraulic excavator main body, 2 is an upper revolving structure, 3 is a lower traveling structure, 4 is an engine as a power source, 5 is a cooling device (a combination of a radiator and an oil cooler). ) Is shown. Further, 6 is an engine hood above the engine, 7 is a side cover in front of the cooling device, 8 is an operator cab, and 9 is a machine room.
【０００３】 図６は図５のエンジン及びラジエ−タ回りの平面図、図７は図５のエンジン及 びラジエ−タ回りをキャブ側より後方を透視的に見た図である。FIG. 6 is a plan view around the engine and radiator of FIG. 5, and FIG. 7 is a perspective view of the engine and around the radiator of FIG. 5 seen rearward from the cab side.
【０００４】 図６及び図７で冷却装置５はラジエ−タ５Ａとオイルク−ラ５Ｂが重なりあっ た様に構成され、ラジエ−タ５Ａの下部取付部はフレ−ム１１にボルトで固定さ れている。ところで、油圧ショベル等の建設機械の稼働現場は比較的塵埃が多い ので、稼働中にエンジンの冷却ファン１２により冷却空気と共に吸込まれた各種 のゴミ，鉄粉，枯草などはオイルク−ラの前面１６に導かれる。オイルク−ラ， ラジエ−タには流体を導く多数のチュ−ブや冷却用フィン（いずれも図示せず） が網目状に配列されており、吸込まれた塵埃はオイルク−ラ５Ｂの前面１６に付 着しつつ、一部はオイルク−ラのフィン隙間を通過してラジエ−タ５Ａの前面に も付着し、あるいはオイルク−ラ５Ｂとラジエ−タ５Ａの隙間１３に徐々に堆積 して冷却能力の低下をもたらし、しばしばオ−バヒ−トの問題を引き起こしてい た。In FIGS. 6 and 7, the cooling device 5 is constructed such that the radiator 5A and the oil cooler 5B overlap each other, and the lower mounting portion of the radiator 5A is fixed to the frame 11 with bolts. ing. By the way, since the operating sites of construction machines such as hydraulic excavators are relatively dusty, various kinds of dust, iron powder, dead grass, etc. sucked together with the cooling air by the engine cooling fan 12 during operation are in front of the oil cooler. Be led to. The oil cooler and radiator have a large number of tubes for guiding fluid and cooling fins (neither of which is shown) arranged in a mesh pattern, and the sucked dust is collected on the front surface 16 of the oil cooler 5B. While adhering, part of it passes through the fin gap of the oil cooler and adheres also to the front surface of the radiator 5A, or gradually deposits in the gap 13 between the oil cooler 5B and the radiator 5A to cool it. It often caused problems of overheat.
【０００５】 オ−バ−ヒ−トを防止するため、ラジエ−タやオイルク−ラ周辺に付着・堆積 した塵埃を定期的に取除く必要があるが、図６，図７に示した構成ではラジエ− タ５Ａとオイルク−ラ５Ｂの隙間１３に堆積した塵埃を取除くためには冷却装置 ５全体を一度フレ−ム１１から取外し、更にラジエ−タ，オイルク−ラを切離し てその隙間を清掃することとなり大変な時間と労力を要していた。In order to prevent overheat, it is necessary to periodically remove dust attached and accumulated around the radiator and the oil cooler, but in the configuration shown in FIG. 6 and FIG. In order to remove the dust accumulated in the gap 13 between the radiator 5A and the oil cooler 5B, the entire cooling device 5 is once removed from the frame 11, and the radiator and oil cooler are cut off to clean the gap. It took a lot of time and effort.
【０００６】 この清掃作業を容易にする目的で図８乃至図１０に示す冷却装置が提案されて いる。図８は冷却装置の正面図、図９は平面図、更に図１０はオイルク−ラ５Ｂ をラジエ−タ５Ａに対して角α回転した状態を示す。図中５はラジエ−タ５Ａ及 びオイルク−ラ５Ｂの組合せであり、フレ−ム１１にボルト１０で固定されたラ ジエ−タ５Ａに対して、必要個数設けた蝶番１７を介してオイルク−ラ５Ｂを回 転可能に支持している。この構成ではラジエ−タ５Ａとオイルク−ラ５Ｂの隙間 １３に堆積した塵埃を取除くときは、冷却装置５の一方の側にある取付ボルト１ ５をゆるめてプレ−ト１４を取外し、オイルク−ラ５Ｂを角度αだけ回転させて 隙間１３を大きく確保し（図１０）、清掃のための例えばエア吹付けや水洗作業 を可能としたものである。A cooling device shown in FIGS. 8 to 10 has been proposed for the purpose of facilitating the cleaning work. 8 is a front view of the cooling device, FIG. 9 is a plan view, and FIG. 10 shows a state in which the oil cooler 5B is rotated by an angle α with respect to the radiator 5A. In the figure, reference numeral 5 is a combination of a radiator 5A and an oil cooler 5B. The radiator 5A fixed to the frame 11 with bolts 10 is connected to the radiator 5A via a hinge 17 provided in a required number. La 5B is rotatably supported. With this configuration, when removing dust accumulated in the gap 13 between the radiator 5A and the oil cooler 5B, the mounting bolt 15 on one side of the cooling device 5 is loosened and the plate 14 is removed to remove the oil cooler. By rotating the la 5B by an angle α, a large gap 13 is secured (FIG. 10), and for example, air spraying or washing work for cleaning can be performed.
【０００７】 さて、オイルク−ラ５Ｂで冷却されるべき作動油は、図示しないコントロ−ル バルブから配管またはゴムホ−スでオイルク−ラに導かれてオイルク−ラ内を循 環後再び配管またはゴムホ−スで図示しない作動油タンクへ排出される。そして 、これらの配管またはゴムホ−スは非常に狭い機械室内で、油圧ショベル本体の 作業振動や油圧脈動により異常な振れや他部品との接触を起こさない様、図示し ない固定部材などで堅固に固定されている。従って、前述清掃作業の為オイルク −ラを角度αだけ回転する為には、オイルク−ラに接続した配管類を取外す必要 があり、この場合作動油の流出防止処理が大変煩わしいものとなる。The operating oil to be cooled by the oil cooler 5B is guided to the oil cooler by a pipe or a rubber hose from a control valve (not shown), circulates in the oil cooler, and then is recirculated through the pipe or the rubber hose. -It is discharged to a hydraulic oil tank (not shown). And these pipes or rubber hoses should be firmly fixed in a machine room with a fixing member (not shown) to prevent abnormal vibration or contact with other parts due to work vibration or hydraulic pulsation of the hydraulic excavator body in a very narrow machine room. It is fixed. Therefore, in order to rotate the oil cooler by the angle α for the cleaning work, it is necessary to remove the pipes connected to the oil cooler. In this case, the process of preventing the hydraulic oil from flowing out becomes very troublesome.
【０００８】 一方ゴムホ−スの場合はそれ自身可撓性を有するため、ある程度の角度回転は 可能であるが、ホ−スの移動による余分なスペ−スの確保が必要となり、またゴ ムホ−スのねじりや折れなどを誘起し、ひいてはホ−スの寿命低下の危険性を有 している。On the other hand, since the rubber hose has flexibility by itself, it is possible to rotate the hose to some extent, but it is necessary to secure an extra space by moving the hose, and the rubber hose is required. There is a risk of twisting and breaking of the hose, which in turn shortens the life of the hose.
【０００９】 なお図８〜図１０で、１８はコントロ−ルバルブからオイルク−ラへの給油配 管又はゴムホ−ス、１９及び１９′はオイルク−ラ５Ｂへの給油配管で、１９′ はオイルク−ラ５Ｂ側に溶接付け、２０及び２０′はオイルク−ラ５Ｂからの排 油配管で、２０′はオイルク−ラ側に溶接付け、２１はオイルク−ラから作動油 タンクへの排油配管又はゴムホ−ス、２２は配管と配管を結合するシ−ル継手（ フレキシブルカップリング）である。8 to 10, 18 is an oil supply pipe or rubber hose from the control valve to the oil cooler, 19 and 19 'are oil supply pipes to the oil cooler 5B, and 19' is an oil cooler. Welded to the oil 5B side, 20 and 20 'are oil drain pipes from the oil cooler 5B, 20' are welded to the oil cooler side, and 21 are oil drain pipes from the oil cooler to the hydraulic oil tank or rubber hoses. Reference numeral 22 denotes a seal joint (flexible coupling) for connecting the pipes.
【００１０】[0010]
従来技術の問題点に鑑み、この考案はかかる状況のラジエ−タ５Ａ，オイルク −ラ５Ｂの冷却用チュ−ブ、フィン等の回りに付着したゴミの清掃を容易化する 為の好適な構成を提供するものである。 In view of the problems of the prior art, the present invention provides a suitable configuration for facilitating cleaning of dust attached around the radiator 5A, oil cooler 5B cooling tubes, fins and the like in such a situation. Is provided.
【００１１】[0011]
エンジン冷却ファンの前方にラジエ−タ及びオイルク−ラをこの順序に重ね合 わせに配列し、更にラジエ−タとオイルク−ラの取付面の一方に蝶番等を用いて 該オイルク−ラをラジエ−タに対して角度αだけ回転可能に支持した冷却装置に おいて、オイルク−ラへの給排配管の中間にスイベルジョイントを設け、このス イベルジョイントの回転中心線と前記蝶番の回転中心を一致させた。 A radiator and an oil cooler are arranged in front of the engine cooling fan so as to be superposed in this order, and the oil cooler is attached to one of the mounting surfaces of the radiator and the oil cooler by using a hinge or the like. A swivel joint is installed in the middle of the supply and discharge pipes to the oil cooler in the cooling device that is rotatably supported by the angle α, and the rotation center line of this swivel joint and the rotation center of the hinge are connected. Matched.
【００１２】[0012]
図１〜図４に本考案の冷却装置の一実施例を示し、図１は正面図、図２は平面 図であり、共にオイルク−ラは通常位置即ち図のＡ位置である。図３は清掃のた めオイルク−ラ５Ｂを角度αだけ回転した、すなわち清掃位置（図３のＢ位置） を示す平面図である。図４はオイルク−ラ５Ｂへの作動油給排の継手部の断面詳 細図である。なお前述図８〜図１０に示す従来技術と同一の構成要素には同一の 符号を付している。 1 to 4 show an embodiment of the cooling device of the present invention, FIG. 1 is a front view and FIG. 2 is a plan view, and the oil cooler is in the normal position, that is, the position A in the drawing. FIG. 3 is a plan view showing the oil cooler 5B rotated by an angle α for cleaning, that is, a cleaning position (position B in FIG. 3). FIG. 4 is a detailed sectional view of a joint portion for supplying and discharging hydraulic oil to and from the oil cooler 5B. The same components as those of the conventional technique shown in FIGS. 8 to 10 are designated by the same reference numerals.
【００１３】 図１〜図３でフレ−ム１１にボルト１０で固定されたラジエ−タ５Ａに対して オイルク−ラ５Ｂが複数の蝶番１７を介して回転可能に支持されている点は従来 例と同じである。しかし図示しないコントロ−ルバルブからオイルク−ラ５Ｂへ の作動油給油配管１８及び１９の中間に、またオイルク−ラ５Ｂから図示しない 作動油タンクへの排油配管２０及び２１の中間にそれぞれスイベルジョイント２ ３，２４及び配管ブロック２５を設けている。スイベルジョイント２３，２４は 配管ブロック２５の両端に取付けられ、このスイベルジョイント２３，２４の回 転中心線は前記複数の蝶番１７の回転中心と完全に一致している。配管ブロック ２５は作動油給排の配管１８，２１に接続されると共に、本体の作動振動や油圧 脈動に十分耐える様図示しない固定手段で機械室９内に適宜固定されている。1 to 3, a conventional example is that an oil cooler 5B is rotatably supported by a plurality of hinges 17 with respect to a radiator 5A fixed to a frame 11 with a bolt 10. Is the same as. However, the swivel joint 2 is provided in the middle of the hydraulic oil supply pipes 18 and 19 from the control valve (not shown) to the oil cooler 5B, and in the middle of the drain oil pipes 20 and 21 from the oil cooler 5B to the hydraulic oil tank (not shown). 3, 24 and a piping block 25 are provided. The swivel joints 23 and 24 are attached to both ends of the piping block 25, and the rotation center lines of the swivel joints 23 and 24 are completely coincident with the rotation centers of the hinges 17. The pipe block 25 is connected to the pipes 18 and 21 for supplying and discharging hydraulic oil, and is appropriately fixed in the machine room 9 by a fixing means (not shown) so as to sufficiently endure the operating vibration and hydraulic pulsation of the main body.
【００１４】 図４で図示しないコントロ−ルバルブからの作動油は給油配管１８及び配管ブ ロック２５に導かれるが、スイベルジョイント２３で方向を変え配管１９，１９ ′よりオイルク−ラへ導かれる。更にオイルク−ラからの排油は配管２０，２０ ′からスイベルジョイント２４、配管ブロック２５及び排油配管２１を順次経由 して作動油タンクへ戻る。スイベルジョイント２３，２４は固定部分２３Ａ，２ ４Ａ及び回転部分２３Ｂ，２４Ｂ間が完全にシ−ルされているので、オイルク− ラ及び配管類１９,１９′及び２０,２０′が回転中心線ＣＬ（図１）上で給排配 管１８，２１及び配管ブロック２５に対して相対回転をしても油洩れすることは ない。尚、２２は前述のシ−ル継手（フレキシブルカップリング）である。The hydraulic oil from the control valve (not shown in FIG. 4) is guided to the oil supply pipe 18 and the pipe block 25, but its direction is changed by the swivel joint 23 and is guided to the oil cooler from the pipes 19 and 19 ′. Further, the oil discharged from the oil cooler returns to the hydraulic oil tank from the pipes 20 and 20 'through the swivel joint 24, the pipe block 25 and the oil discharge pipe 21 in this order. Since the swivel joints 23 and 24 are completely sealed between the fixed portions 23A and 24A and the rotating portions 23B and 24B, the oil cooler and the pipes 19, 19 'and 20, 20' are rotated around the center line CL. (Fig. 1) Even if the pipes are rotated relative to the supply / discharge pipes 18, 21 and the pipe block 25, no oil will leak. Reference numeral 22 is the above-mentioned seal joint (flexible coupling).
【００１５】[0015]
図１〜図３に示した実施例では、冷却装置５に付着した塵埃を清掃する際は、 まず通常位置Ａにてオイルク−ラ５Ｂの前面１６に付着した塵埃を取り除き、次 にオイルク−ラ５Ｂとラジエ−タ５Ａを固定している一方側のボルト１５を取外 す。さらに蝶番１７を利用してオイルク−ラ全体を清掃位置Ｂまで角度αだけ回 転させる。これにより通常位置Ａではわずかであった隙間１３は大きく確保され 清掃作業が容易となる。この時もちろんエンジンフ−ド６やサイドカバ−７など は開放され、作業用スペ−スは大きく確保されている。 In the embodiment shown in FIGS. 1 to 3, when cleaning the dust adhering to the cooling device 5, the dust adhering to the front surface 16 of the oil cooler 5B is first removed at the normal position A, and then the oil cooler is removed. Remove the bolt 15 on one side fixing 5B and radiator 5A. Further, the hinge 17 is used to rotate the entire oil cooler to the cleaning position B by an angle α. As a result, the gap 13 which was small at the normal position A is secured large, and the cleaning operation becomes easy. At this time, of course, the engine hood 6 and the side cover 7 are opened, and a large working space is secured.
【００１６】 この際、従来技術によると、オイルク−ラへの作動油給排配管１８，２１を取 外すことが必要であり、又ゴムホ−スの場合は角度αだけ回転することによるゴ ムホ−ス自身の移動スペ−ス確保やホ−スねじりに対する対策が必要であったが 、本考案によればスイベルジョイント２３，２４が蝶番１７の回転中心線上に一 致している為、これらの配管取外しの必要性が全くなく、またゴムホ−スの移動 スペ−スを考慮する必要がなく、コンパクトな構成が可能となる。清掃作業終了 後もオイルク−ラを元の位置に回転するのみで容易に通常位置Ａに復帰させるこ とが可能である。At this time, according to the prior art, it is necessary to remove the hydraulic oil supply / discharge pipes 18 and 21 to the oil cooler, and in the case of a rubber hose, the rubber hose is rotated by an angle α. Although it was necessary to secure the movement space of the hose itself and to prevent the hose from twisting, according to the present invention, since the swivel joints 23 and 24 are aligned with the rotation center line of the hinge 17, these pipes must be removed. Is unnecessary, and there is no need to consider the moving space of the rubber hose, and a compact structure can be achieved. It is possible to easily return to the normal position A simply by rotating the oil cooler to the original position after the cleaning work is completed.
【００１７】[0017]
本考案によれば、オイルク−ラ５Ｂをラジエ−タ５Ａに対して角度αだけ回転 可能とした冷却装置において、スイベルジョイント２３，２４を利用して、オイ ルク−ラ５Ｂへの給排配管を取外すことなく、通常位置から清掃位置へまた清掃 位置から通常位置へ容易に回転できる構造とした。このため塵埃の多い作業現場 での稼働時にしばしば必要となっていた冷却装置の清掃作業の能率を一段と高め ることができ、ひいてはオ−バ−ヒ−トの危険性を未然に防ぐことが可能となっ た。 According to the present invention, in the cooling device in which the oil cooler 5B is rotatable by the angle α with respect to the radiator 5A, the swivel joints 23 and 24 are used to connect the supply and discharge pipes to the oil cooler 5B. The structure is such that it can be easily rotated from the normal position to the cleaning position and from the cleaning position to the normal position without removing. Therefore, it is possible to further improve the efficiency of the cleaning work of the cooling device, which is often required at the time of operation in a dusty work site, and it is possible to prevent the danger of overheat before it happens. Became.
【図１】本考案に係る冷却装置の正面図。FIG. 1 is a front view of a cooling device according to the present invention.
【図２】同じく平面図。FIG. 2 is a plan view of the same.
【図３】オイルク−ラを回転した清掃位置を示す。FIG. 3 shows a cleaning position where an oil cooler is rotated.
【図４】オイルク−ラへの作動油給排継手の断面図。FIG. 4 is a cross-sectional view of a hydraulic oil supply / discharge joint for an oil cooler.
【図５】公知油圧ショベルの斜視図。FIG. 5 is a perspective view of a known hydraulic excavator.
【図６】図５のエンジン及びラジエ−タ回りを上方から
みた平面図。6 is a plan view of the engine and the radiator of FIG. 5 as viewed from above.
【図７】同じくキャブ側より後方をみた図。FIG. 7 is a view of the same as seen from the cab side and behind.
【図８】公知冷却装置の正面図。FIG. 8 is a front view of a known cooling device.
【図９】同じく平面図。FIG. 9 is a plan view of the same.
【図１０】オイルク−ラをラジエ−タに対し回転した状
態を示す。FIG. 10 shows a state in which the oil cooler is rotated with respect to the radiator.
１ 油圧ショベル本体 ２ 上部旋回体 ３ 下部走行体 ４ エンジン ５ 冷却装置 ５Ａ ラジエ−タ ５Ｂ オイルク−ラ ６ エンジンフ−ド ７ サイドカバ− ８ オペレ−タキャブ ９ 機械室 １０ ボルト １１ フレ−ム １２ 冷却ファン １３ 隙間 １４ プレ−ト １５ 取付ボルト １６ (オイルク−ラの)前面 １７ 蝶番 １８ 給油配管（又はゴムホ−ス） １９，１９′ 給油配管 ２０，２０′ 排油配管 ２１ 排油配管又はゴムホ−ス ２２ シ−ル継手 ２３，２４ スイベルジョイント ２５ 配管ブロック 1 Hydraulic excavator main body 2 Upper revolving structure 3 Lower traveling structure 4 Engine 5 Cooling device 5A Radiator 5B Oil cooler 6 Engine hood 7 Side cover 8 Operator cab 9 Machine room 10 Bolt 11 Frame 12 Cooling fan 13 Gap 14 Plate 15 Mounting bolt 16 Front (of oil cooler) 17 Hinge 18 Oil supply pipe (or rubber hose) 19, 19 'Oil supply pipe 20, 20' Oil discharge pipe 21 Oil discharge pipe or rubber hose 22 -Le fitting 23,24 Swivel joint 25 Piping block
Claims (1)
(5A)及びオイルク−ラ(5B)をこの順序に重ね合わせて配
列し、ラジエ−タ(5A)とオイルク−ラ(5B)の取付面の一
方に蝶番(17)等を用いて該オイルク−ラをラジエ−タに
対して角度αだけ回転可能に支持した冷却装置(５)にお
いて、オイルク−ラ(5B)への給排配管の中間にスイベル
ジョイント(23,24)を設け、このスイベルジョイント(2
3,24)の回転中心線と前記蝶番(17)の回転中心を一致さ
せたことを特徴とする建設機械のエンジン冷却装置。1. A radiator in front of an engine cooling fan.
(5A) and the oil cooler (5B) are superposed in this order and arranged, and a hinge (17) or the like is used on one of the mounting surfaces of the radiator (5A) and the oil cooler (5B). In the cooling device (5) that supports the rotor rotatably by an angle α with respect to the radiator, a swivel joint (23, 24) is provided in the middle of the supply and discharge pipe to the oil cooler (5B). (2
An engine cooling device for a construction machine, wherein a rotation center line of 3,24) and a rotation center of the hinge (17) are aligned with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2123591U JPH087058Y2 (en) | 1991-03-12 | 1991-03-12 | Engine cooling system for construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2123591U JPH087058Y2 (en) | 1991-03-12 | 1991-03-12 | Engine cooling system for construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0527237U true JPH0527237U (en) | 1993-04-09 |
| JPH087058Y2 JPH087058Y2 (en) | 1996-02-28 |
Family
ID=12049380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2123591U Expired - Lifetime JPH087058Y2 (en) | 1991-03-12 | 1991-03-12 | Engine cooling system for construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087058Y2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252473A (en) * | 1997-03-17 | 1998-09-22 | Ishikawajima Shibaura Mach Co Ltd | Oil cooler mounting structure of work vehicle |
| JPH11315707A (en) * | 1998-04-30 | 1999-11-16 | Shin Caterpillar Mitsubishi Ltd | Oil cooler piping structure |
| JP2001193457A (en) * | 1999-12-28 | 2001-07-17 | Shin Caterpillar Mitsubishi Ltd | Cooling device for construction machine |
| JP2003096821A (en) * | 2001-09-20 | 2003-04-03 | Shin Caterpillar Mitsubishi Ltd | Cooling package for construction machinery |
| JP2007071091A (en) * | 2005-09-06 | 2007-03-22 | Shin Caterpillar Mitsubishi Ltd | Cooling unit and operation machine |
| JP2007077609A (en) * | 2005-09-12 | 2007-03-29 | Shin Caterpillar Mitsubishi Ltd | Cooling device and working machine |
| KR100808120B1 (en) * | 2006-07-05 | 2008-02-29 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic oil cooler having drain valve for heavy construction equipment |
| JP2010036736A (en) * | 2008-08-05 | 2010-02-18 | Central Japan Railway Co | Cover holding mechanism for underfloor structure of railroad vehicle, and underfloor structure of railroad vehicle |
| JP2011185004A (en) * | 2010-03-11 | 2011-09-22 | Hitachi Constr Mach Co Ltd | Construction machine |
| KR101074221B1 (en) * | 2004-08-09 | 2011-10-14 | 히다찌 겐끼 가부시키가이샤 | Heat exchanger mounting structure for constrcution machinery |
| JP2012132269A (en) * | 2010-12-24 | 2012-07-12 | Komatsu Ltd | Construction vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5456492B2 (en) * | 2010-01-08 | 2014-03-26 | 日立建機株式会社 | Construction machinery |
-
1991
- 1991-03-12 JP JP2123591U patent/JPH087058Y2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252473A (en) * | 1997-03-17 | 1998-09-22 | Ishikawajima Shibaura Mach Co Ltd | Oil cooler mounting structure of work vehicle |
| JPH11315707A (en) * | 1998-04-30 | 1999-11-16 | Shin Caterpillar Mitsubishi Ltd | Oil cooler piping structure |
| JP2001193457A (en) * | 1999-12-28 | 2001-07-17 | Shin Caterpillar Mitsubishi Ltd | Cooling device for construction machine |
| JP2003096821A (en) * | 2001-09-20 | 2003-04-03 | Shin Caterpillar Mitsubishi Ltd | Cooling package for construction machinery |
| KR101074221B1 (en) * | 2004-08-09 | 2011-10-14 | 히다찌 겐끼 가부시키가이샤 | Heat exchanger mounting structure for constrcution machinery |
| JP2007071091A (en) * | 2005-09-06 | 2007-03-22 | Shin Caterpillar Mitsubishi Ltd | Cooling unit and operation machine |
| JP2007077609A (en) * | 2005-09-12 | 2007-03-29 | Shin Caterpillar Mitsubishi Ltd | Cooling device and working machine |
| JP4528230B2 (en) * | 2005-09-12 | 2010-08-18 | キャタピラージャパン株式会社 | Refrigerator and work machine |
| KR100808120B1 (en) * | 2006-07-05 | 2008-02-29 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic oil cooler having drain valve for heavy construction equipment |
| JP2010036736A (en) * | 2008-08-05 | 2010-02-18 | Central Japan Railway Co | Cover holding mechanism for underfloor structure of railroad vehicle, and underfloor structure of railroad vehicle |
| JP2011185004A (en) * | 2010-03-11 | 2011-09-22 | Hitachi Constr Mach Co Ltd | Construction machine |
| JP2012132269A (en) * | 2010-12-24 | 2012-07-12 | Komatsu Ltd | Construction vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087058Y2 (en) | 1996-02-28 |
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