JP2019203469A - Engine work machine - Google Patents

Engine work machine Download PDF

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JP2019203469A
JP2019203469A JP2018100184A JP2018100184A JP2019203469A JP 2019203469 A JP2019203469 A JP 2019203469A JP 2018100184 A JP2018100184 A JP 2018100184A JP 2018100184 A JP2018100184 A JP 2018100184A JP 2019203469 A JP2019203469 A JP 2019203469A
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duct
casing
hole
intake
pair
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JP7032237B2 (en
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勇人 櫻木
Yuto Sakuragi
勇人 櫻木
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Nippon Sharyo Ltd
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Abstract

To attain improvement of cooling efficiency and to satisfactorily prevent infiltration of rain water from a suction hole by providing ducts on two upper and lower stages of a casing.SOLUTION: A first suction duct 14 including a first suction hole 14a and a first duct body 14c of which the opening is directed upward is provided at an upper side of a casing 12, and a second suction duct 15 including a second suction hole 15a and a second duct body 15b is provided at a lower side of the first suction duct 14. A pair of drain holes 14b and 14b is formed at a lower side of both ends of the casing 12 in a width direction of the first suction hole 14a, and the first duct body 14c is attached while enclosing the first suction hole 14a and the drain hole 14b. A bottom wall 14f of the first duct body 14c is formed from a slope which is inclined gradually downwards from the inside of the casing 12 to the casing, and the bottom wall 14f is connected with the pair of drain holes 14b and 14b. The second suction hole 15a is formed at an inner lower side in a width direction of the pair of drain holes 14b and 14b.SELECTED DRAWING: Figure 1

Description

本発明は、エンジン作業機に関し、詳しくは、作業機と、該作業機を駆動するエンジンとを収納したケーシングに、吸気ダクトを設けたエンジン作業機に関する。   The present invention relates to an engine work machine, and more particularly to an engine work machine in which an intake duct is provided in a casing that houses a work machine and an engine that drives the work machine.

従来、エンジン作業機では、作業機と、該作業機を駆動するエンジンとを収容するケーシングに、ケーシング内に外気を導入するための吸気孔と、該吸気孔に連接するダクト本体とを備えた吸気ダクトを設けていた。また、この吸気ダクトとして、下向きのダクト本体をケーシングの外側に設け、ダクト本体から雨水がケーシング内に浸入することを防止するために、ダクトの開口部よりも上方に金網を取り付けたものがあった（例えば、特許文献１参照。）。   Conventionally, in an engine work machine, a casing that accommodates the work machine and an engine that drives the work machine has an intake hole for introducing outside air into the casing, and a duct body that is connected to the intake hole. An intake duct was provided. Also, as this air intake duct, there is one in which a downward duct body is provided on the outside of the casing, and in order to prevent rainwater from entering the casing from the duct body, a metal mesh is attached above the opening of the duct. (For example, refer to Patent Document 1).

実開平７−３０５６５号公報Japanese Utility Model Publication No. 7-30565

しかし、上述の特許文献１のように、吸気ダクトをケーシングの外側に設けると、輸送時や搬入時にエンジン作業機をクレーンで吊り上げる際に、吸気ダクトが邪魔になる虞があることから、ケーシングの内側に、ケーシングに貫通形成した吸気孔を囲むダクトを設けたものがある。この場合、吸気孔からの雨水の浸入をケーシング内に落下させないために、上向きダクトが用いられることが望まれるが、エンジン作業機内の冷却効率を向上させるために、ダクトを上下二段に設けた際には、雨水の浸入を良好に防止するためにダクトの構造に工夫が必要となっていた。   However, if the air intake duct is provided outside the casing as in Patent Document 1 described above, the air intake duct may become an obstacle when the engine work machine is lifted by a crane during transportation or loading. There is an inner duct provided with a duct surrounding an intake hole penetratingly formed in the casing. In this case, it is desirable to use an upward duct in order to prevent rainwater intrusion from the intake hole from falling into the casing. However, in order to improve the cooling efficiency in the engine work machine, the duct is provided in two upper and lower stages. In some cases, it was necessary to devise the duct structure in order to prevent rainwater from entering well.

そこで本発明は、ケーシングの上下二段にダクトを設け、冷却効率の向上を図るとともに、吸気孔からの雨水の浸入を良好に防止することができるエンジン作業機を提供することを目的としている。   Accordingly, an object of the present invention is to provide an engine working machine that is provided with ducts in two upper and lower stages of a casing to improve cooling efficiency and to prevent rainwater from entering from an intake hole.

上記目的を達成するため、本発明のエンジン作業機は、作業機と、該作業機を駆動するエンジンとを収納するケーシングに、該ケーシングに貫通形成した吸気孔と、前記ケーシングの内側に、前記吸気孔を囲んで取り付けられるダクト本体とを備えた吸気ダクトを設けたエンジン作業機において、前記ケーシングの上方に、第１の吸気孔と、開口部を上方に向けた第１のダクト本体とを備えた第１吸気ダクトを、該第１吸気ダクトの下方に、第２の吸気孔と第２のダクト本体とを備えた第２吸気ダクトをそれぞれ設け、前記ケーシングの前記第１の吸気孔の幅方向両端部の下方に一対の排水孔を形成し、前記第１のダクト本体を、前記第１の吸気孔と前記排水孔とを囲んで取り付け、前記第１のダクト本体の底壁を、ケーシングの内側からケーシング側に向けて漸次下方に傾斜する傾斜面で形成するとともに、該底壁と前記一対の排水孔とをそれぞれ接続し、前記一対の排水孔の幅方向内側に、前記第２の吸気孔を形成したことを特徴としている。   In order to achieve the above object, an engine work machine according to the present invention includes a casing that houses a work machine and an engine that drives the work machine, an intake hole that is formed through the casing, and an inner side of the casing. In an engine working machine provided with an intake duct having a duct body attached to surround the intake hole, a first intake hole and a first duct body with an opening facing upward are provided above the casing. The first intake duct provided is provided with a second intake duct having a second intake hole and a second duct main body below the first intake duct, respectively, and the first intake duct of the casing is provided with a second intake duct. A pair of drainage holes are formed below both ends in the width direction, the first duct body is attached so as to surround the first intake hole and the drainage hole, and the bottom wall of the first duct body is attached. From the inside of the casing The bottom wall and the pair of drain holes are connected to each other, and the second intake hole is formed on the inner side in the width direction of the pair of drain holes. It is characterized by the formation.

また、前記第２のダクト本体は、開口部を水平方向に向けた横向きダクト、又は、開口部を下方に向けた下向きダクトであると好適である。    Further, it is preferable that the second duct main body is a lateral duct having an opening portion directed in a horizontal direction or a downward duct having an opening portion directed downward.

本発明のエンジン作業機によれば、作業機とエンジンとを収容するケーシングに、第１吸気ダクトと第２吸気ダクトとを設けたことにより、ケーシング内の冷却効率を向上させることができる。また、雨天時には、ケーシングの天井側からケーシングの外面に沿って流下する雨水が、外気とともに第１の吸気孔からダクト本体内に浸入するが、浸入した雨水は、ダクト本体の底壁に落下するとともに、底壁の傾斜によってケーシング側に集まり、一対の排水孔から外部に排出される。また、天井側からケーシングの外面に沿って流下する雨水は、上述のように第１の吸気ダクトの吸気孔に浸入して排出されることから、一対の排水孔の幅方向内側に設けられた第２の吸気孔から雨水が浸入することが抑制される。   According to the engine working machine of the present invention, the cooling efficiency in the casing can be improved by providing the first air intake duct and the second air intake duct in the casing that houses the work machine and the engine. In rainy weather, rainwater that flows down from the ceiling side of the casing along the outer surface of the casing infiltrates into the duct body together with the outside air from the first intake hole, but the infiltrated rainwater falls on the bottom wall of the duct body. At the same time, it gathers on the casing side due to the inclination of the bottom wall and is discharged to the outside through a pair of drain holes. In addition, rainwater that flows down from the ceiling side along the outer surface of the casing enters the air intake holes of the first air intake duct as described above and is discharged, so that it is provided inside the pair of drain holes in the width direction. Infiltration of rainwater from the second intake hole is suppressed.

また、第２のダクト本体を、開口部を水平方向に向けた横向きダクト、又は、開口部を下方に向けた下向きダクトとしたことにより、第１吸気ダクトの下方に近接して第２吸気ダクトを設けることができる。   Further, the second duct main body is a horizontal duct with the opening directed in the horizontal direction or a downward duct with the opening directed downward, so that the second intake duct is close to the lower side of the first intake duct. Can be provided.

本発明の一形態例を示すエンジン発電機の正面図である。It is a front view of an engine generator showing an example of the present invention. 同じくエンジン発電機の要部正面図である。It is a principal part front view of an engine generator similarly. 同じくエンジン発電機の要部断面図である。Similarly it is principal part sectional drawing of an engine generator. 図２のIV-IV断面図である。It is IV-IV sectional drawing of FIG. 図２のV-V断面図である。FIG. 5 is a VV cross-sectional view of FIG. 2.

図１乃至図５は、本発明のエンジン作業機の一形態例を示す図である。エンジン発電機１１は、防音構造を有する直方体形状のケーシング１２の内部に、作業機や、該作業機を駆動するディーゼルエンジンをはじめとした各種機器が収納されている。ケーシング１２は、前面のパネル１２ａに、点検扉１３が設けられると共に、該点検扉１３の一側方に、ケーシング１２内に外気を導入するための第１吸気ダクト１４と第２吸気ダクト１５とが上下に配置されている。   1 to 5 are views showing an example of an engine working machine according to the present invention. The engine generator 11 houses a work machine and various devices such as a diesel engine that drives the work machine in a rectangular parallelepiped casing 12 having a soundproof structure. The casing 12 is provided with an inspection door 13 on the front panel 12a, and a first intake duct 14 and a second intake duct 15 for introducing outside air into the casing 12 on one side of the inspection door 13. Are arranged one above the other.

第１吸気ダクト１４は、ケーシング１２の上方に設けられ、パネル１２ａに貫通形成された第１の吸気孔１４ａと、該第１の吸気孔１４ａよりも下方に形成された一対の排水孔１４ｂ，１４ｂと、パネル１２ａの内側に、第１の吸気孔１４ａと排水孔１４ｂ，１４ｂとを囲んで取り付けられる第１のダクト本体１４ｃとを備えている。第１の吸気孔１４ａは、正方形状に貫通形成された複数の通孔１４ｅを縦横に整列して長方形上に形成したもので、一対の排水孔１４ｂは、幅方向両端に配列された通孔１４ｅの下部に連続してそれぞれ形成されている。   The first intake duct 14 is provided above the casing 12, and includes a first intake hole 14a formed through the panel 12a and a pair of drain holes 14b formed below the first intake hole 14a. 14b and a first duct main body 14c attached to the inside of the panel 12a so as to surround the first intake hole 14a and the drain holes 14b and 14b. The first air intake holes 14a are formed by arranging a plurality of through holes 14e penetrating and forming in a square shape in a rectangular shape, and the pair of drain holes 14b are through holes arranged at both ends in the width direction. 14e is formed continuously in the lower part.

第１のダクト本体１４ｃは、開口部１４ｄを上方に向けた上向きダクトで、パネル１２ａの内側に、第１の吸気孔１４ａと一対の排水孔１４ｂ，１４ｂとを囲んで取り付けられる。第１のダクト本体１４ｃの底壁１４ｆは、ケーシング１２の内側からケーシング側に向けて漸次下方に傾斜する傾斜面で形成され、底壁１４ｆの幅方向両端部に前記一対の排水孔１４ｂ，１４ｂがそれぞれ接続されている。   The first duct body 14c is an upward duct with the opening 14d facing upward, and is attached to the inside of the panel 12a so as to surround the first intake hole 14a and the pair of drain holes 14b and 14b. The bottom wall 14f of the first duct main body 14c is formed with an inclined surface that is gradually inclined downward from the inside of the casing 12 toward the casing side, and the pair of drain holes 14b, 14b at both ends in the width direction of the bottom wall 14f. Are connected to each other.

第２吸気ダクト１５は、第１吸気ダクト１４よりも下方に設けられ、パネル１２ａに貫通形成された第２の吸気孔１５ａと、パネル１２ａの内側に、第２の吸気孔１５ａを囲んで取り付けられる第２のダクト本体１５ｂとを備え、第２のダクト本体１５ｂは、開口部１５ｃを下に向けた下向きダクトで形成されている。第２の吸気孔１５ａは、第１の吸気孔１４ａと同様に、正方形状に貫通形成された複数の通孔１５ｄを縦横に整列して長方形状に形成され、一対の排水孔１４ｂ，１４ｂの幅方向内側に配置される。   The second air intake duct 15 is provided below the first air intake duct 14 and is attached to the inside of the panel 12a so as to surround the second air intake hole 15a. The second duct body 15b is formed of a downward duct with the opening 15c facing downward. Similarly to the first intake hole 14a, the second intake hole 15a is formed in a rectangular shape by vertically aligning a plurality of through holes 15d penetrating in a square shape. It is arranged on the inner side in the width direction.

上述のように形成されたエンジン発電機１１は、雨天時に使用する際には、ケーシング１２の天井側からケーシング１２のパネル１２ａの外面に沿って流下する雨水Ｒ１が、外気とともに第１の吸気孔１４ａから第１のダクト本体１４ｃ内に浸入するが、浸入した雨水Ｒ１は、第１のダクト本体１４ｃの底壁１４ｆに落下し、底壁１４ｆの傾斜によってパネル１２ａ側に集まり、一対の排水孔１４ｂ，１４ｂから、雨水Ｒ２として外部に排出される。また、天井側からパネル１２ａの外面に沿って流下する雨水Ｒ１は、上述のように排水孔１４ｂ，１４ｂから排出されることから、排水孔１４ｂ，１４ｂの幅方向内側に設けられた第２の吸気孔１５ａから雨水Ｒ２が浸入することを抑制することができる。   When the engine generator 11 formed as described above is used in rainy weather, rainwater R1 flowing down from the ceiling side of the casing 12 along the outer surface of the panel 12a of the casing 12 together with the outside air is a first intake hole. 14a enters the first duct main body 14c, but the rainwater R1 that has entered falls to the bottom wall 14f of the first duct main body 14c, and gathers on the panel 12a side due to the inclination of the bottom wall 14f, and a pair of drain holes From 14b and 14b, it is discharged outside as rainwater R2. Moreover, since the rainwater R1 flowing down along the outer surface of the panel 12a from the ceiling side is discharged from the drain holes 14b and 14b as described above, the second water disposed in the width direction inside the drain holes 14b and 14b. Infiltration of rainwater R2 from the intake hole 15a can be suppressed.

本形態例は上述のように、ケーシング１２に第１吸気ダクト１４と第２吸気ダクト１５とを上下２段に設けたことにより、吸気量が増加し、ケーシング１２内の冷却効率を向上させることができる。また、第２吸気ダクト１５の第２の吸気孔１５ａから雨水が浸入することを抑制できることから、第２のダクト本体１５ｂを下向きダクトで形成することができ、第１吸気ダクト１４と第２吸気ダクト１５とを近接して設けることができるとともに、ケーシング内に導入する外気の流れを任意に設定することができる。   In this embodiment, as described above, the first intake duct 14 and the second intake duct 15 are provided in the upper and lower stages in the casing 12, thereby increasing the intake air amount and improving the cooling efficiency in the casing 12. Can do. In addition, since rainwater can be prevented from entering from the second intake hole 15a of the second intake duct 15, the second duct body 15b can be formed as a downward duct, and the first intake duct 14 and the second intake duct can be formed. The duct 15 can be provided in close proximity, and the flow of outside air introduced into the casing can be arbitrarily set.

なお、本発明は、上述の形態例に限るものではなく、第２のダクト本体を、開口を横に向けた横向きダクトで形成してもよく、また、上向きダクトで形成することもできる。   In addition, this invention is not restricted to the above-mentioned form example, The 2nd duct main body may be formed with the horizontal duct which orient | assigned the opening sideways, and can also be formed with an upward duct.

１１…エンジン発電機、１２…ケーシング、１２ａ…パネル、１３…点検扉、１４…第１吸気ダクト、１４ａ…第１の吸気孔、１４ｂ…排水孔、１４ｃ…第１のダクト本体、１４ｄ…開口部、１４ｅ…通孔、１４ｆ…底壁、１５…第２吸気ダクト、１５ａ…第２の吸気孔、１５ｂ…第２のダクト本体、１５ｃ…開口部、１５ｄ…通孔   DESCRIPTION OF SYMBOLS 11 ... Engine generator, 12 ... Casing, 12a ... Panel, 13 ... Inspection door, 14 ... 1st intake duct, 14a ... 1st intake hole, 14b ... Drainage hole, 14c ... 1st duct main body, 14d ... Opening 14e ... through hole, 14f ... bottom wall, 15 ... second intake duct, 15a ... second intake hole, 15b ... second duct body, 15c ... opening, 15d ... through hole

Claims (2)

作業機と、該作業機を駆動するエンジンとを収納するケーシングに、該ケーシングに貫通形成した吸気孔と、前記ケーシングの内側に、前記吸気孔を囲んで取り付けられるダクト本体とを備えた吸気ダクトを設けたエンジン作業機において、前記ケーシングの上方に、第１の吸気孔と、開口部を上方に向けた第１のダクト本体とを備えた第１吸気ダクトを、該第１吸気ダクトの下方に、第２の吸気孔と第２のダクト本体とを備えた第２吸気ダクトをそれぞれ設け、前記ケーシングの前記第１の吸気孔の幅方向両端部の下方に一対の排水孔を形成し、前記第１のダクト本体を、前記第１の吸気孔と前記排水孔とを囲んで取り付け、前記第１のダクト本体の底壁を、ケーシングの内側からケーシング側に向けて漸次下方に傾斜する傾斜面で形成するとともに、該底壁と前記一対の排水孔とをそれぞれ接続し、前記一対の排水孔の幅方向内側に前記第２の吸気孔を形成したことを特徴とするエンジン作業機。 An air intake duct comprising: a casing that houses a work machine and an engine that drives the work machine; an air intake hole that is formed through the casing; and a duct body that is attached to the inside of the casing so as to surround the air intake hole. In the engine working machine provided with a first intake duct having a first intake hole and a first duct main body with an opening portion facing upward above the casing, the first intake duct is provided below the first intake duct. A second air intake duct having a second air intake hole and a second duct body, respectively, and a pair of drainage holes are formed below both widthwise ends of the first air intake hole of the casing, The first duct main body is attached so as to surround the first intake hole and the drainage hole, and the bottom wall of the first duct main body is gradually inclined downward from the inside of the casing toward the casing side. Forming on the surface Together, to connect the the bottom wall of the pair of drain holes respectively, an engine working machine, characterized in that the formation of the second air inlet in the width direction inner side of the pair of drainage holes. 前記第２のダクト本体は、開口部を水平方向に向けた横向きダクト、又は、開口部を下方に向けた下向きダクトであることを特徴とする請求項１記載のエンジン作業機。 2. The engine working machine according to claim 1, wherein the second duct main body is a lateral duct having an opening directed in a horizontal direction or a downward duct having an opening directed downward.
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JPH09203326A (en) * 1996-01-25 1997-08-05 Denyo Kk Opening/closing door of large engine work apparatus
KR20090081192A (en) * 2008-01-23 2009-07-28 엘지전자 주식회사 Co-generation unit
CN103821613A (en) * 2014-02-19 2014-05-28 合肥康尔信电力系统有限公司 Air inlet scoop of noiseless-cabinet diesel generating set
JP2016217205A (en) * 2015-05-18 2016-12-22 デンヨー株式会社 Air intake duct part for engine driven working machine
JP2018003769A (en) * 2016-07-06 2018-01-11 日本車輌製造株式会社 Air intake duct and engine work machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH084531A (en) * 1994-06-15 1996-01-09 Mitsubishi Heavy Ind Ltd Cooling air intaking structure of power generating device
JPH09203326A (en) * 1996-01-25 1997-08-05 Denyo Kk Opening/closing door of large engine work apparatus
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