JP6794048B2

JP6794048B2 - Engine work machine

Info

Publication number: JP6794048B2
Application number: JP2017009974A
Authority: JP
Inventors: 勇人櫻木
Original assignee: Nippon Sharyo Ltd
Current assignee: Nippon Sharyo Ltd
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2020-12-02
Anticipated expiration: 2037-01-24
Also published as: JP2018119428A

Description

本発明は、エンジン作業機に関し、詳しくは、エンジン及び作業機を収容するケーシングの下部に、外部への油分の漏洩を遮断するための防油堤を設けたエンジン作業機に関する。 The present invention relates to an engine working machine, and more particularly to an engine working machine in which an oil barrier for blocking oil leakage to the outside is provided in a lower part of a casing accommodating the engine and the working machine.

発電機や圧縮機などの作業機と、該作業機を駆動するエンジンとをケーシングの内部に収容したエンジン作業機では、ケーシングを支持する架台の内側に防油堤（オイルガード）を設け、エンジンや燃料タンクから漏れた油分がエンジン作業機の外部に流出することを防止するようにしている。また、ケーシングの内壁に付着した油分を防油堤の内部に流下させるためのガイド部材を設けることも行われている（例えば、特許文献１参照。）。 In an engine work machine in which a work machine such as a generator or a compressor and an engine for driving the work machine are housed inside a casing, an oil barrier is provided inside a frame that supports the casing to provide an engine. The oil leaked from the engine and fuel tank is prevented from flowing out to the outside of the engine work machine. In addition, a guide member for allowing oil adhering to the inner wall of the casing to flow down into the oil barrier is also provided (see, for example, Patent Document 1).

特開２０１２−４７０４９号公報Japanese Unexamined Patent Publication No. 2012-47049

一方、防油堤は、架台の捩れが防油堤に直接伝わって破損しないように、防油堤と架台との間に離間部を設けて配置される場合がある。この場合、エンジン作業機の運転中に、ホースの穴あき等で油分が飛散、滴下した場合に、油分が前記離間部を通じてエンジン作業機の外部に流出する虞があった。このため、上述のガイド部材を更に発展させて、組み立てコストの上昇を招くことなく、油分の漏洩を確実に防止できる方策が望まれていた。 On the other hand, the oil barrier may be arranged with a separation portion between the oil barrier and the gantry so that the twist of the gantry is not directly transmitted to the oil levee and is not damaged. In this case, if the oil is scattered and dropped due to a hole in the hose or the like during the operation of the engine working machine, the oil may flow out to the outside of the engine working machine through the separation portion. Therefore, it has been desired to further develop the above-mentioned guide member and to surely prevent oil leakage without inviting an increase in assembly cost.

そこで本発明は、複雑な構造変更を要することなく、エンジンなどから飛散した油分の漏洩防止機能を向上させることができる防油堤を備えたエンジン作業機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 an engine working machine provided with an oil barrier capable of improving the function of preventing leakage of oil scattered from an engine or the like without requiring complicated structural changes.

上記目的を達成するため、本発明のエンジン作業機は、ケーシングの内部に、作業機と、該作業機を駆動するエンジンとを収納し、燃焼用及び冷却用の空気を前記ケーシングの内部に吸い込む吸気口を前記ケーシングの側壁部に設けるとともに、上部が前記ケーシングの内部に開口した防油堤を前記ケーシングの下部に備えたエンジン作業機において、前記防油堤は、該防油堤の側板外面と前記ケーシングを支持する架台の側板内面との間に離間部を設けて配置され、前記架台の内面に、該架台の側板内面を伝わって流下する液体を前記防油堤の内部に流下させるためのガイド部を設け、前記防油堤の上縁と前記ガイド部の下面との間に、前記離間部を通じて吸い込まれた空気を前記防油堤の内部に噴出させる
ための導入隙間を設け、前記導入隙間は前記離間部よりも狭く形成されていることを特徴としている。 In order to achieve the above object, the engine working machine of the present invention houses the working machine and the engine for driving the working machine inside the casing, and sucks combustion and cooling air into the casing. In an engine work machine in which an intake port is provided on a side wall portion of the casing and an oil barrier having an upper portion opened inside the casing is provided in the lower portion of the casing, the oil barrier is an outer surface of a side plate of the oil barrier. In order to provide a separation portion between the inner surface of the side plate of the gantry that supports the casing and the inner surface of the side plate of the gantry, and to allow the liquid flowing down along the inner surface of the side plate of the gantry to flow down into the inside of the oil barrier. of the guide portion is provided, between the lower surface of the upper edge and the guide portion of the proof oil bank, provided the introduction gap for ejecting the air sucked through the spacing portion inside the explosion oil bank, the The introduction gap is characterized in that it is formed narrower than the separation portion .

本発明のエンジン作業機によれば、エンジンなどから飛散した油分をガイド部によって防油堤の内部に流下させるとともに、防油堤の上縁とガイド部の下面との隙間から噴出する空気の流れによって、ガイド部に付着した油分を防油堤の内部に吹き戻すことができるので、油分が防油堤と架台との離間部を通じてエンジン作業機の外部に流出することを防止できる。 According to the engine working machine of the present invention, the oil scattered from the engine or the like is allowed to flow down into the oil barrier by the guide portion, and the air flow ejected from the gap between the upper edge of the oil barrier and the lower surface of the guide portion. As a result, the oil adhering to the guide portion can be blown back into the inside of the oil barrier, so that the oil can be prevented from flowing out to the outside of the engine working machine through the separation portion between the oil barrier and the gantry.

本発明の一形態例を示すエンジン作業機の正面図である。It is a front view of the engine working machine which shows one embodiment of this invention. 同じくエンジン作業機の要部平面図である。Similarly, it is a plan view of a main part of an engine work machine. 同じくエンジン作業機の要部正面図である。Similarly, it is a front view of a main part of an engine work machine. 図２のＩＶ−ＩＶ断面図である。FIG. 2 is a sectional view taken along line IV-IV of FIG. 図３のＶ−Ｖ断面図である。FIG. 3 is a sectional view taken along line VV of FIG. 同じくエンジン作業機の要部断面斜視図である。Similarly, it is a cross-sectional perspective view of a main part of an engine work machine. 同じくエンジン作業機の要部拡大断面図である。Similarly, it is an enlarged sectional view of a main part of an engine working machine.

図１乃至図７は本発明のエンジン作業機の一形態例を示すものである。まず、図１に示すように、エンジン作業機１１は、防音構造を有するケーシング１２の下部に設けられている架台１３の上に、発電機や圧縮機、油圧ユニットなどの作業機や、該作業機を駆動するディーゼルエンジンなどの機器（図示せず）を収容したものであって、ケーシング１２は、略直方体の箱状に形成され、側壁１２ａには、機器の保守作業を行うための両開き方式の点検扉１４が設けられている。側壁１２ａ及び点検扉１４には、ケーシング１２の内部に冷却用及び燃焼用の空気を取り入れるための吸気口１５がそれぞれ設けられている。 1 to 7 show an example of one form of the engine working machine of the present invention. First, as shown in FIG. 1, the engine work machine 11 is a work machine such as a generator, a compressor, a hydraulic unit, and the work on a pedestal 13 provided under the casing 12 having a soundproof structure. It accommodates equipment (not shown) such as a diesel engine that drives the machine. The casing 12 is formed in a substantially rectangular box shape, and the side wall 12a is a double door system for performing maintenance work on the equipment. The inspection door 14 is provided. The side wall 12a and the inspection door 14 are provided with intake ports 15 for taking in cooling air and combustion air inside the casing 12, respectively.

架台１３は、図２乃至図４に示すように、長手方向に設けられた一対のベースフレーム１３ａ，１３ａと、両ベースフレーム１３ａの上部に掛け渡されて機器を支持する機器支持部材１３ｂと、両ベースフレーム１３ａの下部に掛け渡されて防油堤１６を支持する防油堤支持部材１３ｃとで形成されている。 As shown in FIGS. 2 to 4, the gantry 13 includes a pair of base frames 13a and 13a provided in the longitudinal direction, and an equipment support member 13b that is hung on the upper portions of both base frames 13a to support the equipment. It is formed of an oil barrier support member 13c that is hung over the lower portions of both base frames 13a and supports the oil barrier 16.

防油堤１６は、長方形状の底板１６ａと、該底板１６ａの四方を囲む側板として、底板１６ａの対向する長辺部にそれぞれ立設した一対の長側板１６ｂ，１６ｂと、底板１６ａの対向する短辺部にそれぞれ立設した一対の短側板１６ｃ，１６ｃとを備えており、上部に開口を有した箱形に形成されている。 The oil barrier 16 has a rectangular bottom plate 16a and a pair of long side plates 16b and 16b standing on opposite long sides of the bottom plate 16a as side plates surrounding the bottom plate 16a, and the bottom plate 16a facing each other. It is provided with a pair of short side plates 16c and 16c erected on the short side, respectively, and is formed in a box shape having an opening at the top.

さらに、防油堤１６には、長側板１６ｂの内外を連通させるパイプ部材１６ｄが設けられており、防油堤１６の内部に溜まった油分をパイプ部材１６ｄに接続されたホースなどのドレン管（図示せず）を通じてエンジン作業機１１の外部に排出して、適宜な容器に回収することができる。 Further, the oil barrier 16 is provided with a pipe member 16d that communicates the inside and outside of the long side plate 16b, and a drain pipe such as a hose that connects the oil accumulated inside the oil barrier 16 to the pipe member 16d ( It can be discharged to the outside of the engine working machine 11 through (not shown) and collected in an appropriate container.

また、防油堤１６は、上縁を機器支持部材１３ｂの下側に潜り込ませた状態で、防油堤支持部材１３ｃの上面に載置されているので、エンジンなどから直接飛散した油分のみならず、機器支持部材１３ｂを伝わって間接的に飛散した油分も防油堤１６の内部に流下させることができる。 Further, since the oil barrier 16 is placed on the upper surface of the oil barrier support member 13c with the upper edge submerged under the equipment support member 13b, only the oil content scattered directly from the engine or the like can be used. Instead, the oil that is indirectly scattered along the device support member 13b can also flow down into the oil barrier 16.

さらに、防油堤１６は、図５及び図６に示すように、一対のベースフレーム１３ａ，１３ａの内側に配置されるとともに、長側板１６ｂの外面とベースフレーム１３ａの内面との間に離間部１７を設けているので、架台１３に生じる捩れが防油堤１６に直接伝わることはなく、防油堤１６が架台１３と共に捩れて破損することを防止できる。 Further, as shown in FIGS. 5 and 6, the oil barrier 16 is arranged inside the pair of base frames 13a and 13a, and is separated from the outer surface of the long side plate 16b and the inner surface of the base frame 13a. Since the 17 is provided, the twist generated in the gantry 13 is not directly transmitted to the oil barrier 16, and the oil barrier 16 can be prevented from being twisted and damaged together with the gantry 13.

ベースフレーム１３ａの内面には、断面コ字状の内フレーム１８が設けられ、内フレーム１８の下辺は、先端を防油堤１６の上方に突出させてガイド部１８ａを形成している。また、ガイド部１８ａの下面を長側板１６ｂの上端から僅かに離間させることによって、離間部１７から吸い込まれた空気を防油堤１６の内部に噴出させるための導入隙間１９が設けられている。 An inner frame 18 having a U-shaped cross section is provided on the inner surface of the base frame 13a, and a guide portion 18a is formed on the lower side of the inner frame 18 with its tip protruding above the oil barrier 16. Further, by slightly separating the lower surface of the guide portion 18a from the upper end of the long side plate 16b, an introduction gap 19 for ejecting the air sucked from the separating portion 17 into the inside of the oil barrier 16 is provided.

このように形成したエンジン作業機１１は、運転スイッチを投入してエンジンを始動すると、ラジエータファン（図示せず）の回転によってケーシング１２の内部の空気がエンジン作業機１１の外部に排出される。このとき、ケーシング１２の内部は負圧になるので、吸気口１５からケーシング１２の内部に空気が吸引される。さらに、吸引された空気は、ラジエータファンに向かう流れとなってケーシング１２の内部で掻き乱され、図７に矢印Ｌ１で示すように、ケーシング１２内に飛散、流出した油分を吹き上げて飛散させる。 When the operation switch of the engine work machine 11 formed in this manner is turned on to start the engine, the air inside the casing 12 is discharged to the outside of the engine work machine 11 by the rotation of the radiator fan (not shown). At this time, since the inside of the casing 12 becomes a negative pressure, air is sucked into the inside of the casing 12 from the intake port 15. Further, the sucked air becomes a flow toward the radiator fan and is disturbed inside the casing 12, and as shown by an arrow L1 in FIG. 7, the oil that has flowed out and scattered in the casing 12 is blown up and scattered.

飛散した油分は、内フレーム１８の内壁に付着すると、矢印Ｌ２で示すように、内フレーム１８の内壁を伝わって流下し、内フレーム１８の内壁からガイド部１８ａの傾斜面を下って防油堤１６の上方に誘導され、ガイド部１８ａの先端から防油堤１６の内部に流下する。このように、ケーシング１２の内部が負圧になっているので、架台１３の内壁を伝わって流下した油分が、離間部１７を通じてエンジン作業機１１の外部に流出することを防止できる。 When the scattered oil adheres to the inner wall of the inner frame 18, as indicated by the arrow L2, it flows down along the inner wall of the inner frame 18 and descends from the inner wall of the inner frame 18 to the inclined surface of the guide portion 18a to prevent the oil. It is guided above the 16 and flows down from the tip of the guide portion 18a into the inside of the oil barrier 16. Since the inside of the casing 12 has a negative pressure in this way, it is possible to prevent the oil that has flowed down along the inner wall of the gantry 13 from flowing out to the outside of the engine working machine 11 through the separating portion 17.

さらに、ケーシング１２内に吸引される空気の一部は、矢印Ａ１で示すように、離間部１７を上昇し、導入隙間１９から防油堤１６の内部に噴出されるとともに、導入隙間１９によって流通経路が絞られて流速が上昇するので、防油堤１６の内部への噴出が高速になる。このため、油分が、ガイド部１８ａの下面を伝わって導入隙間１９に向かって流れようとしても、導入隙間１９から噴出する空気によって防油堤１６の内部に吹き戻されるので、油分が離間部１７を通じてエンジン作業機１１の外部に流出することを確実に防止できる。 Further, a part of the air sucked into the casing 12 rises at the separation portion 17 as shown by the arrow A1, is ejected from the introduction gap 19 into the oil barrier 16, and is circulated through the introduction gap 19. Since the path is narrowed and the flow velocity is increased, the ejection to the inside of the oil barrier 16 becomes high speed. Therefore, even if the oil content tries to flow toward the introduction gap 19 through the lower surface of the guide portion 18a, it is blown back into the oil barrier 16 by the air ejected from the introduction gap 19, so that the oil content is blown back into the separation portion 17 It is possible to surely prevent the outflow to the outside of the engine work machine 11 through the engine work machine 11.

このように、防油堤１６の上縁とガイド部１８ａの下面との間に僅かに隙間を設けるだけで、エンジン作業機１１の運転中にエンジンなどから飛散した油分の外部への漏洩を防止できる。さらに、シール材などで離間部１７を閉塞する必要がないので、製造コストの増加も抑制できる。また、エンジン作業機１１の停止中は、ケーシング１２内に空気の流れが発生しないので、油分が吹き上げられて導入隙間１９から防油堤１６の外部に流出することはない。 In this way, by providing a slight gap between the upper edge of the oil barrier 16 and the lower surface of the guide portion 18a, oil scattered from the engine or the like during operation of the engine work machine 11 can be prevented from leaking to the outside. it can. Further, since it is not necessary to close the separating portion 17 with a sealing material or the like, an increase in manufacturing cost can be suppressed. Further, since no air flow is generated in the casing 12 while the engine working machine 11 is stopped, the oil content is not blown up and flows out from the introduction gap 19 to the outside of the oil barrier 16.

なお、ガイド部は、防油堤の上縁に僅かに隙間を設けて形成することで空気の吹き出しを増速できればよく、離間部の大きさや機器の配置状態に応じて、適宜な形状で形成することができる。例えば、ケーシング内の負圧状態などの条件によって異なるが、導入隙間は２〜５ｍｍ程度が適当である。 It is sufficient that the guide portion is formed by providing a slight gap on the upper edge of the oil barrier to accelerate the air blowout, and is formed in an appropriate shape according to the size of the separation portion and the arrangement state of the equipment. can do. For example, although it depends on conditions such as a negative pressure state in the casing, an introduction gap of about 2 to 5 mm is appropriate.

１１…エンジン作業機、１２…ケーシング、１２ａ…側壁、１３…架台、１３ａ…ベースフレーム、１３ｂ…機器支持部材、１３ｃ…防油堤支持部材、１４…点検扉、１５…吸気口、１６…防油堤、１６ａ…底板、１６ｂ…長側板、１６ｃ…短側板、１６ｄ…パイプ部材、１７…離間部、１８…内フレーム、１８ａ…ガイド部、１９…導入隙間 11 ... Engine work machine, 12 ... Casing, 12a ... Side wall, 13 ... Mount, 13a ... Base frame, 13b ... Equipment support member, 13c ... Oil barrier support member, 14 ... Inspection door, 15 ... Intake port, 16 ... Prevention Oil embankment, 16a ... bottom plate, 16b ... long side plate, 16c ... short side plate, 16d ... pipe member, 17 ... separation part, 18 ... inner frame, 18a ... guide part, 19 ... introduction gap

Claims

A working machine and an engine for driving the working machine are housed inside the casing, and an intake port for sucking combustion and cooling air into the casing is provided on the side wall portion of the casing, and the upper part is the said. In an engine working machine provided with an oil barrier opened inside the casing at the lower part of the casing, the oil barrier is separated between the outer surface of the side plate of the oil barrier and the inner surface of the side plate of the gantry that supports the casing. A guide portion is provided on the inner surface of the gantry to allow the liquid flowing down along the inner surface of the side plate of the gantry to flow down into the oil barrier, and the upper edge of the oil barrier and the above. An introduction gap is provided between the lower surface of the guide portion and the inside of the oil barrier to eject the air sucked through the separation portion .
An engine working machine characterized in that the introduction gap is formed narrower than the separation portion .