JPH081966Y2 - Exhaust gas switching device for construction truck dump trucks - Google Patents
Exhaust gas switching device for construction truck dump trucksInfo
- Publication number
- JPH081966Y2 JPH081966Y2 JP1988163474U JP16347488U JPH081966Y2 JP H081966 Y2 JPH081966 Y2 JP H081966Y2 JP 1988163474 U JP1988163474 U JP 1988163474U JP 16347488 U JP16347488 U JP 16347488U JP H081966 Y2 JPH081966 Y2 JP H081966Y2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- exhaust
- pair
- exhaust pipes
- flange
- 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.)
- Expired - Lifetime
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、建設機械用ダンプトラックにおける排気ガ
スをボディ内に流入したり、大気に放出したりする排気
ガス切換装置に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an exhaust gas switching device for injecting exhaust gas in a dump truck for construction machinery into a body or releasing it into the atmosphere.
建設機械用ダンプトラックにおいては、排気ガスをボ
ディ内に流入させてボディを加熱することでボディに土
砂等が付着しないようにしてボディ内の土砂をスムーズ
に排出できるようにしている。In a dump truck for construction machinery, exhaust gas is allowed to flow into the body to heat the body to prevent dirt and the like from adhering to the body and smoothly discharge the earth and sand from the body.
しかしながら、ボディはフレームに対して起立姿勢と
倒伏姿勢とに亘って上下回動自在となっているので、排
気管をボディに直接連結できない。However, since the body is vertically rotatable with respect to the frame in the upright posture and the fallen posture, the exhaust pipe cannot be directly connected to the body.
このために従来は、エンジンの排気管に筺体を接続
し、この筺体内に、入口とボディ側出口と排出管出口を
連通・遮断するバルブを設けると共に、ボディに入口フ
ランジを設けて、ボディを倒伏姿勢とすると入口フラン
ジがボディ側出口と接続し、かつ入口とボディ側出口が
連通して排気ガスがボディ内に流入し、ボディを起立姿
勢とすると入口を排出管側出口が連通して排気ガスが排
気管より大気に放出されるようにしている。For this reason, conventionally, a casing is connected to an engine exhaust pipe, and in this casing, a valve is provided to connect and block the inlet, the body side outlet, and the discharge pipe outlet, and the body is provided with an inlet flange. When the body is in the lying position, the inlet flange is connected to the body-side outlet, and the inlet and the body-side outlet are in communication so that exhaust gas flows into the body. The gas is released from the exhaust pipe to the atmosphere.
かかる構造であると、バルブを内蔵した筺体を必要と
すると共に、そのバルブをボディに設けた入口フランジ
によって切換え動作するので、構造が複雑となってコス
トが高くなると共に、バルブが誤動作すると排気ガスを
ボディに流入できなくなることがあり、信頼性が悪いも
のとなっている。With such a structure, a housing having a built-in valve is required, and the valve is switched by an inlet flange provided on the body, so that the structure becomes complicated and the cost becomes high. May not be able to flow into the body, resulting in poor reliability.
そこで、本考案は前述の課題を解決できるようにした
建設機械用ダンプトラックの排気ガス切換装置を提供す
ることを目的とする。Therefore, an object of the present invention is to provide an exhaust gas switching device for a dump truck for a construction machine, which can solve the above-mentioned problems.
フレーム１の後部にボディ４を起立姿勢と倒伏姿勢と
に亘って上下回動自在に設け、そのフレーム１の前部に
エンジン５を設けた建設機械用ダンプトラックにおい
て、 前記フレーム１に、長手方向中間部に可撓部9aを有す
る一対の第１排気管9,9を前後方向に向けて取付け、前
記フレーム１における一対の第１排気管9,9より後部寄
り位置に第２排気管10をフレーム１の左右方向に向けて
取付け、この第２排気管10に前記一対の第１排気管9,9
の一端部を接続し、その他端部を前記エンジン５の一対
の排気部に接続し、 前記第２排気管10をフレーム１の左右端部よりも側方
に突出させ、その突出部分を水平に対して略45度で上向
きにし、その突出部分にフランジ17を有する可動筒体18
を突出位置で引き込み位置に亘って摺動自在に嵌合して
取付けてフランジ17を垂直に対して略45度とし、その可
動筒体18をバネ24で突出位置に付勢保持し、 前記ボディ４の幅方向一側で前部寄り位置にボディ内
排気ガス通路に連通した入口ボックス19を取付け、この
入口ボックス19におけるフレーム１左右方向の一側面を
垂直に対して略45度として前記フランジ17と相対向する
受け面20とし、この受け面20に前記可動筒体18が嵌まり
込む接続口21を形成した建設機械用ダンプトラックの排
気ガス切換装置。A construction machine dump truck in which a body 4 is provided in a rear portion of a frame 1 so as to be vertically rotatable between an upright posture and a fall posture, and an engine 5 is provided in a front portion of the frame 1. A pair of first exhaust pipes 9,9 having a flexible portion 9a in the middle portion are attached in the front-rear direction, and a second exhaust pipe 10 is provided in the frame 1 at a position closer to the rear than the pair of first exhaust pipes 9,9. The frame 1 is mounted in the left-right direction, and the pair of first exhaust pipes 9 and 9 are attached to the second exhaust pipe 10.
Is connected to one end of the engine 5 and the other end thereof is connected to a pair of exhaust parts of the engine 5, the second exhaust pipe 10 is projected laterally beyond the left and right end parts of the frame 1, and the projected part is made horizontal. Movable cylinder 18 that has a flange 17 on its protruding portion, facing upward at about 45 degrees
Is slidably fitted over the retracted position at the projecting position and the flange 17 is set to approximately 45 degrees with respect to the vertical, and the movable cylinder 18 is biased and held by the spring 24 at the projecting position. 4, an inlet box 19 communicating with the exhaust gas passage in the body is attached at a position closer to the front part on one side in the width direction, and one side surface of the inlet box 19 in the left-right direction of the frame 1 is set to approximately 45 degrees with respect to the vertical direction. An exhaust gas switching device for a construction machine dump truck, which has a receiving surface (20) facing each other and a connection port (21) into which the movable cylinder (18) is fitted.
これにより、第２排気管10に設けた可動筒体18を入口
ボックス19の接続口21に臨ませるようにしたので、排気
管８にバルブを有する筺体を設けなくとも良く、構造簡
単で安価となると共に、バルブの誤操作などもなくボデ
ィ４を倒伏姿勢とすれば排気管８の先端部が入口ボック
ス19の接続口21に必ず臨むので、排気ガスを確実にボデ
ィ４内に流入できて信頼性が向上する。As a result, the movable cylindrical body 18 provided in the second exhaust pipe 10 is made to face the connection port 21 of the inlet box 19, so that it is not necessary to provide the exhaust pipe 8 with a housing having a valve, and the structure is simple and inexpensive. In addition, since the tip of the exhaust pipe 8 always faces the connection port 21 of the inlet box 19 when the body 4 is in the laid-down posture without erroneous operation of the valve, the exhaust gas can surely flow into the body 4 and is reliable. Is improved.
フレーム１は左右主フレーム2,2の前部を門型フレー
ム３で連結してあり、そのフレーム１の後部にボディ４
が起立姿勢と倒伏姿勢とに亘って上下回動自在に設けて
あると共に、左右主フレーム2,2の前部間にエンジン５
が設けられ、このエンジン５の一対の排気マニホールド
６は一対のターボチャージャ７の入口側に接続し、その
出口側は排気管８に接続している。In the frame 1, the front parts of the left and right main frames 2, 2 are connected by a gate type frame 3, and the body 4 is connected to the rear part of the frame 1.
Is provided so as to be vertically rotatable between an upright posture and a fallen posture, and the engine 5 is provided between the front portions of the left and right main frames 2, 2.
The pair of exhaust manifolds 6 of the engine 5 are connected to the inlet side of the pair of turbochargers 7, and the outlet side thereof is connected to the exhaust pipe 8.
該排気管８は各ターボチャージャ７の出口側に接続し
た一対の第１排気管９と第２排気管10とより成り、第１
排気管９はエンジン５に取着したブラケット11に連結具
12で後方に向けて支持されていると共に、中間部に可撓
部9aを有し、第２排気管10は門型フレーム３に取付けた
ブラケット13に連結具14で左右方向に向けて支持されて
いると共に、その一端側に一対の第１排気管９が接続
し、他端側は門型フレーム３より側方に突出し、かつ門
型フレーム３側部に取着した側板15に連結部材16で支持
されていると共に、他端部はフレームの捩り中心1aに対
して45°で上向きとなり、かつフランジ17を備えた可動
筒体18が設けてあり、ボディ４の前部には入口ボックス
19が設けてあると共に、この入口ボックス19内は図示し
ないボディ内排気ガス通路に連通し、かつ垂直に対して
45°となった受け面20を有し、この受け面20に前記可動
筒体19が臨む接続口21が形成してある。The exhaust pipe 8 is composed of a pair of a first exhaust pipe 9 and a second exhaust pipe 10 connected to the outlet side of each turbocharger 7.
The exhaust pipe 9 is connected to the bracket 11 attached to the engine 5.
The second exhaust pipe 10 is supported by the bracket 13 attached to the gate-shaped frame 3 in the left-right direction while being supported rearward by 12 and having a flexible portion 9a in the middle. In addition, a pair of first exhaust pipes 9 are connected to one end side of the gate type frame 3, and the other end side thereof projects sideways from the gate type frame 3 and is connected to the side plate 15 attached to the side portion of the gate type frame 3 by a connecting member 16. A movable cylinder 18 having a flange 17 is provided at the other end of the inlet box at an angle of 45 ° with respect to the torsion center 1a of the frame, and the other end of the inlet box is provided at the front of the body 4.
19 is provided, and the inside of the inlet box 19 communicates with the exhaust gas passage in the body (not shown) and
It has a receiving surface 20 having an angle of 45 °, and the receiving surface 20 is formed with a connection port 21 facing the movable cylindrical body 19.
前記可動筒体18は第４図のように、第２排気管10の基
部10aに摺動自在に嵌合していると共に、ガイド杆22に
嵌合したガイドフランジ23を備え、そのガイドフランジ
23に接したバネ24でガイド杆22のストッパ用ナット25に
当接するまで突出付勢され、ボディ４との相対位置が若
干ずれてもフランジ17が入口ボックス19の受け面20に圧
着するようにしてあると共に、そのフランジ17は前記垂
直に対して45°となり、フレーム１が捩り変形しても入
口ボックス19の受け面20に隙間なく圧着するようにして
ある。As shown in FIG. 4, the movable cylinder 18 is slidably fitted to the base portion 10a of the second exhaust pipe 10 and is provided with a guide flange 23 fitted to the guide rod 22.
The spring 24, which is in contact with 23, is urged to project until it comes into contact with the stopper nut 25 of the guide rod 22, so that the flange 17 is pressed against the receiving surface 20 of the inlet box 19 even if the position relative to the body 4 is slightly displaced. In addition, the flange 17 forms an angle of 45 ° with respect to the vertical, so that even if the frame 1 is twisted and deformed, it is pressed against the receiving surface 20 of the inlet box 19 without a gap.
なお、運転室は門型フレーム３における前記可動筒体
18と反対側に設けてある。The driver's cab is the movable cylinder in the gate-shaped frame 3.
It's on the opposite side of 18.
このようであるから、ボディ４を倒伏姿勢とすると入
口ボックス19の受け面20が可動筒体18のフランジ17に接
する共に、接続口21に臨み、エンジンの排気ガスはボデ
ィ４内に流入し、ボディ４を起立姿勢とすると入口ボッ
クス19が可動筒体18より離隔して、エンジンの排気ガス
は可動筒体18より直接大気に放出される。Therefore, when the body 4 is in the laid-down posture, the receiving surface 20 of the inlet box 19 contacts the flange 17 of the movable tubular body 18 and faces the connection port 21, and the exhaust gas of the engine flows into the body 4. When the body 4 is in the upright posture, the inlet box 19 is separated from the movable cylindrical body 18, and the exhaust gas of the engine is directly emitted from the movable cylindrical body 18 to the atmosphere.
第２排気管10に設けた可動筒体18を入口ボックス19の
接続口21に臨ませるようにしたので、排気管８にバルブ
を有する筺体を設けなくとも良く、構造簡単で安価にな
ると共に、バルブの誤操作などもなくボディ４を倒伏状
態とすれば排気管８の先端部が入口ボックス19の接続口
21に必ず臨むので、排気ガスを確実にボディ４内に流入
できて信頼性が向上する。Since the movable cylinder 18 provided in the second exhaust pipe 10 is made to face the connection port 21 of the inlet box 19, it is not necessary to provide the exhaust pipe 8 with a housing having a valve, and the structure is simple and the cost is low. If the body 4 is laid down without any erroneous operation of the valve, the tip of the exhaust pipe 8 will be connected to the inlet box 19.
Since it always faces 21, the exhaust gas can surely flow into the body 4 and reliability is improved.
また一対の第１排気管９を第２排気管10に接続して排
気管としたので、一対の排気部を有するエンジン５に対
応できるし、その一対の排気部より排出された排気ガス
を１つの入口ボディ19よりボディ内排気ガス通路に流通
できて構造簡単となる。Further, since the pair of first exhaust pipes 9 is connected to the second exhaust pipe 10 to form an exhaust pipe, it is possible to deal with the engine 5 having a pair of exhaust portions, and the exhaust gas discharged from the pair of exhaust portions is The structure can be simplified because it can flow from the one inlet body 19 to the exhaust gas passage in the body.
また、一対の第１排気管９の長手方向中間部には可撓
部9aが設けてあるから、その第１排気管９と第２排気管
10のフレーム１への取付け位置のずれを可撓部9aで吸収
でき、第１・第２排気管９、10のフレーム１への取付け
作業が容易となる。Further, since the flexible portion 9a is provided at the longitudinal middle portion of the pair of first exhaust pipes 9, the first exhaust pipe 9 and the second exhaust pipe 9 are provided.
The displacement of the mounting position of 10 on the frame 1 can be absorbed by the flexible portion 9a, and the mounting work of the first and second exhaust pipes 9 and 10 on the frame 1 becomes easy.
また、第２排気管10はフレーム１の左右方向に向い、
突出部分が水平に対して略45度となって可動筒体18が水
平に対して略45度となるからフランジ17は垂直に対して
略45度となるし、入口ボックス19の受け面20も垂直に対
して略45度となっているので、フレーム１が左右に捩り
変形しても入口ボックス19の受け面20が隙間なくフラン
ジ17に接して排気ガスの漏れを低減できる。Also, the second exhaust pipe 10 faces the left and right direction of the frame 1,
Since the protruding portion is approximately 45 degrees with respect to the horizontal and the movable tubular body 18 is approximately 45 degrees with respect to the horizontal, the flange 17 is approximately 45 degrees with respect to the vertical, and the receiving surface 20 of the inlet box 19 is also Since the angle is approximately 45 degrees with respect to the vertical, even if the frame 1 is twisted and deformed to the left and right, the receiving surface 20 of the inlet box 19 is in contact with the flange 17 without a gap, and leakage of exhaust gas can be reduced.
また、可動筒体18はバネ24で突出位置に付勢保持して
あるから、ボディ４の倒伏姿勢の位置がずれても入口ボ
ックス19の受け面20とフランジ17を接触できる。Further, since the movable tubular body 18 is biased and held by the spring 24 at the protruding position, the receiving surface 20 of the inlet box 19 and the flange 17 can be brought into contact with each other even if the position of the body 4 in the lying posture is deviated.
また、第２排気管10の突出部分はフレーム１の左右端
部よりも側方に突出しているから、可動筒体18もフレー
ム１の左右端部よりも側方に突出した位置となり、ボデ
ィ４を起立姿勢とした時に可動筒体18より排出される排
気ガスはフレーム１より側方に排出されフレーム１を排
出ガスで汚すことがない。Further, since the projecting portion of the second exhaust pipe 10 projects laterally beyond the left and right end portions of the frame 1, the movable cylindrical body 18 also comes to a position laterally projecting beyond the left and right end portions of the frame 1, and the body 4 Exhaust gas discharged from the movable cylindrical body 18 in the upright posture is discharged laterally from the frame 1 and does not pollute the frame 1 with the exhaust gas.
図面は本考案の実施例を示し、第１図は正面図、第２図
は平面図、第３図は後面図、第４図は第１図のIV-IV線
断面図である。 １はフレーム、４はボディ、５はエンジン、８は排気
管、19は入口ボックス、21は接続口。1 is a front view, FIG. 2 is a plan view, FIG. 3 is a rear view, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1 is a frame, 4 is a body, 5 is an engine, 8 is an exhaust pipe, 19 is an inlet box, and 21 is a connection port.
Claims (1)
倒伏姿勢とに亘って上下回動自在に設け、そのフレーム
１の前部にエンジン５を設けた建設機械用ダンプトラッ
クにおいて、 前記フレーム１に、長手方向中間部に可撓部9aを有する
一対の第１排気管9,9を前後方向に向けて取付け、前記
フレーム１における一対の第１排気管9,9より後部寄り
位置に第２排気管10をフレーム１の左右方向に向けて取
付け、この第２排気管10に前記一対の第１排気管9,9の
一端部を接続し、その他端部を前記エンジン５の一対の
排気部に接続し、 前記第２排気管10をフレーム１の左右端部よりも側方に
突出させ、その突出部分を水平に対して略45度で上向き
とし、その突出部分にフランジ17を有する可動筒体18を
突出位置で引き込み位置に亘って摺動自在に嵌合して取
付けてフランジ17を垂直に対し略45度とし、その可動筒
体18をバネ24で突出位置に付勢保持し、 前記ボディ４の幅方向一側で前部寄り位置にボディ内排
気ガス通路に連通した入口ボックス19を取付け、この入
口ボックス19におけるフレーム１左右方向の一側面を垂
直に対して略45度として前記フランジ17と相対向する受
け面20とし、この受け面20に前記可動筒体18が嵌まり込
む接続口21を形成したことを特徴とする建設機械用ダン
プトラックの排気ガス切換装置。1. A construction machine dump truck in which a body 4 is provided at a rear portion of a frame 1 so as to be vertically rotatable between an upright posture and a fall posture, and an engine 5 is provided at a front portion of the frame 1. 1, a pair of first exhaust pipes 9 and 9 each having a flexible portion 9a in the middle portion in the longitudinal direction are attached in the front-rear direction, and the first exhaust pipes 9 and 9 in the frame 1 are located at positions rearward of the pair of first exhaust pipes 9 and 9. 2 Exhaust pipes 10 are attached to the frame 1 in the left-right direction, one end of the pair of first exhaust pipes 9, 9 is connected to the second exhaust pipe 10, and the other end of the pair of exhaust pipes of the engine 5 is connected. The second exhaust pipe 10 is projected laterally beyond the left and right end portions of the frame 1, the projecting portion is directed upward at approximately 45 degrees with respect to the horizontal, and a flange 17 is provided on the projecting portion. Fit the cylinder 18 slidably at the protruding position and over the retracted position. The flange 17 is attached at an angle of about 45 degrees with respect to the vertical, and the movable tubular body 18 is biased and held by the spring 24 at the projecting position. A communication inlet box 19 is attached, and one side surface of the inlet box 19 in the left-right direction of the frame 1 is set at about 45 degrees with respect to the vertical direction to form a receiving surface 20 facing the flange 17, and the receiving surface 20 has the movable cylindrical body. An exhaust gas switching device for a dump truck for a construction machine, wherein a connection port 21 into which 18 is fitted is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988163474U JPH081966Y2 (en) | 1988-12-19 | 1988-12-19 | Exhaust gas switching device for construction truck dump trucks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988163474U JPH081966Y2 (en) | 1988-12-19 | 1988-12-19 | Exhaust gas switching device for construction truck dump trucks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0283126U JPH0283126U (en) | 1990-06-27 |
| JPH081966Y2 true JPH081966Y2 (en) | 1996-01-24 |
Family
ID=31448228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988163474U Expired - Lifetime JPH081966Y2 (en) | 1988-12-19 | 1988-12-19 | Exhaust gas switching device for construction truck dump trucks |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081966Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012218605A (en) * | 2011-04-11 | 2012-11-12 | Hitachi Constr Mach Co Ltd | Method of manufacturing delivery vehicle |
| WO2015125374A1 (en) * | 2014-12-01 | 2015-08-27 | 株式会社小松製作所 | Dump truck |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57188538U (en) * | 1981-05-28 | 1982-11-30 | ||
| JPS6247723U (en) * | 1985-09-13 | 1987-03-24 |
-
1988
- 1988-12-19 JP JP1988163474U patent/JPH081966Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0283126U (en) | 1990-06-27 |
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