JP2003041931A - Muffler device - Google Patents

Muffler device

Info

Publication number
JP2003041931A
JP2003041931A JP2001233908A JP2001233908A JP2003041931A JP 2003041931 A JP2003041931 A JP 2003041931A JP 2001233908 A JP2001233908 A JP 2001233908A JP 2001233908 A JP2001233908 A JP 2001233908A JP 2003041931 A JP2003041931 A JP 2003041931A
Authority
JP
Japan
Prior art keywords
muffler
heat insulating
sheet
insulating sheet
mounting
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.)
Pending
Application number
JP2001233908A
Other languages
Japanese (ja)
Inventor
Koji Yoshimasu
宏次 吉益
Hajime Ishii
元 石井
Kenichiro Nakatani
賢一郎 中谷
Osamu Kokuryo
おさむ 國領
Fumimasa Saeki
文将 佐伯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP2001233908A priority Critical patent/JP2003041931A/en
Publication of JP2003041931A publication Critical patent/JP2003041931A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Exhaust Silencers (AREA)

Abstract

PROBLEM TO BE SOLVED: To simplify shielding structure and installation structure of a muffler body by parting a heat insulating sheet to be installed on the outer side of the muffler body, and covering these with an aluminum sheet. SOLUTION: The heat insulating sheet 24 to cover the muffler body 22 is composed of five sheet parts 25, 26, 27, 28 and 29, and two muffler installation gaps 30 are formed among them. The heat insulating sheet 24 and the gaps 30 are covered with the aluminum sheet 31 from the outer side. Band type installation metal fittings 32 are wound around the aluminum sheet 31 at the positions of the gaps 30, and a screwed rod 32A on the end part side is tightened with a bracket 23 on the side of an engine 6. Need for conducting cutting work or the like to the heat insulating sheet 24 is thus eliminated in shielding and protecting the whole surface of the muffler body 22 with the aluminum sheet 31. The installation structure of it is simplified.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、例えば建設機械、
農業機械、自動車等からなる各種の機械に好適に用いら
れるマフラ装置に関する。TECHNICAL FIELD The present invention relates to a construction machine,
The present invention relates to a muffler device preferably used for various machines such as agricultural machines and automobiles.

【０００２】[0002]

【従来の技術】一般に、例えば建設機械、農業機械、自
動車等からなる各種の機械には、エンジン（内燃機関）
を動力源として作動するものがある。このような機械と
して、油圧ショベル、油圧クレーン等の建設機械を例に
挙げて述べると、例えば油圧ショベルにあっては、エン
ジンを動力源として油圧ポンプ等を駆動し、車両の各部
に圧油を供給することにより、土砂等の掘削作業を行っ
たり、車両の旋回、走行等を行うものである。2. Description of the Related Art Generally, an engine (internal combustion engine) is used for various machines such as construction machines, agricultural machines and automobiles.
There are some that operate with the power source. As such a machine, a construction machine such as a hydraulic excavator or a hydraulic crane will be described as an example. For example, in a hydraulic excavator, a hydraulic pump or the like is driven by using an engine as a power source, and pressure oil is supplied to each part of the vehicle. By supplying it, excavation work such as earth and sand, turning of the vehicle, running and the like are performed.

【０００３】この種の従来技術による油圧ショベルは、
その車体にエンジン、エアクリーナ、ラジエータ、マフ
ラ、油圧ポンプ等の各種機器が搭載され、これらの機器
は車体の外殻を構成する建屋カバーにより覆われてい
る。A hydraulic excavator of this type according to the prior art is
Various devices such as an engine, an air cleaner, a radiator, a muffler, and a hydraulic pump are mounted on the vehicle body, and these devices are covered by a building cover that constitutes the outer shell of the vehicle body.

【０００４】また、建屋カバーの一部は、エンジン等に
面した位置で開，閉されるエンジンカバーとなってい
る。そして、例えば車両のメンテナンス作業等を行うと
きには、作業者がエンジンカバーを開いて各部品の点
検、交換等を行うものである。A part of the building cover is an engine cover which is opened and closed at a position facing the engine and the like. Then, for example, when a vehicle maintenance work or the like is performed, an operator opens the engine cover to inspect or replace each component.

【０００５】この場合、メンテナンス作業時には、例え
ば油圧ショベルの運転を終了した直後等であると、作業
者が高温のマフラに誤って接触する虞れがある。このた
め、従来技術では、マフラに断熱材を取付ける構成とし
ている。In this case, during maintenance work, for example, immediately after the operation of the hydraulic excavator is completed, there is a risk that the worker may accidentally contact the hot muffler. Therefore, in the related art, the muffler has a structure in which a heat insulating material is attached.

【０００６】ここで、図１４、図１５を参照しつつ、従
来技術のマフラ装置について説明する。まず、１０１は
内部に消音部材（図示せず）が設けられた筒状のマフラ
本体で、該マフラ本体１０１は、その配管部１０１Ａ，
１０１Ａのうち一方の配管部がエンジンの排気管側に接
続され、他方の配管部１０１Ａが建屋カバーの外部に向
けて延設されるものである。また、マフラ本体１０１の
外周側には、例えば細長い金属片等からなる４本の脚部
１０２が突設され、該各脚部１０２の先端側は、例えば
エンジン本体やその近傍等に取付けられる構成となって
いる。A conventional muffler device will be described below with reference to FIGS. 14 and 15. First, 101 is a cylindrical muffler main body having a sound deadening member (not shown) provided therein, and the muffler main body 101 is provided with a pipe portion 101A,
One of the pipes 101A is connected to the exhaust pipe side of the engine, and the other pipe 101A is extended toward the outside of the building cover. Further, on the outer peripheral side of the muffler body 101, four leg portions 102 made of, for example, elongated metal pieces are provided in a protruding manner, and the tip ends of the leg portions 102 are attached to, for example, the engine body or its vicinity. Has become.

【０００７】１０３はマフラ本体１０１を外側から覆う
断熱材で、該断熱材１０３は、例えばガラス繊維入りの
断熱性材料により厚肉なシート状に形成され、その外面
側には薄肉なアルミニウムシート１０４が設けられてい
る。また、断熱材１０３とアルミニウムシート１０４に
は、マフラ本体１０１の各脚部１０２を外側に突出させ
るために４個の切取穴１０５が貫通して形成されてい
る。Reference numeral 103 denotes a heat insulating material that covers the muffler main body 101 from the outside. The heat insulating material 103 is formed in a thick sheet shape by a heat insulating material containing glass fiber, for example, and a thin aluminum sheet 104 is provided on the outer surface side. Is provided. In addition, the heat insulating material 103 and the aluminum sheet 104 are formed with four cutout holes 105 penetrating the leg portions 102 of the muffler body 101 so as to project outward.

【０００８】[0008]

【発明が解決しようとする課題】ところで、上述した従
来技術では、マフラ本体１０１が各切取穴１０５の位置
で外部に露出した状態となっている。このため、油圧シ
ョベルの使用時には、外部からダスト、水分等の異物が
切取穴１０５に入り込んでマフラ本体１０１と断熱材１
０３との間の微小な隙間に侵入することがあり、この侵
入部位で錆び等が発生することによってマフラ本体１０
１の寿命が低下するという問題がある。By the way, in the above-mentioned prior art, the muffler body 101 is exposed to the outside at the position of each cutout hole 105. Therefore, when the hydraulic excavator is used, foreign matter such as dust and water enters the cutout hole 105 from the outside and the muffler body 101 and the heat insulating material 1
It may invade into a minute gap between the muffler body 03 and the rust, etc.
There is a problem that the life of 1 is shortened.

【０００９】しかも、マフラ装置の組立時には、断熱材
１０３とアルミニウムシート１０４とを部分的に切取っ
て４個の切取穴１０５を形成しなければならず、これら
の切取作業に手間がかかる上に、各切取穴１０５の位置
で断熱材１０３が露出した状態となるため、マフラ装置
の見栄えが悪くなる。また、エンジンの運転時には、断
熱材１０３とアルミニウムシート１０４の外側に突出し
た各脚部１０２がマフラ本体１０１からの熱伝導によっ
て高温となり易いという問題もある。In addition, when assembling the muffler device, the heat insulating material 103 and the aluminum sheet 104 must be partially cut off to form the four cut holes 105, which is troublesome to cut out. Since the heat insulating material 103 is exposed at the position of each cutout hole 105, the appearance of the muffler device deteriorates. In addition, there is a problem that the leg portions 102 protruding outside the heat insulating material 103 and the aluminum sheet 104 are likely to reach a high temperature due to heat conduction from the muffler body 101 during operation of the engine.

【００１０】本発明は上述した従来技術の問題に鑑みな
されたもので、本発明の目的は、簡単な構造によりマフ
ラ本体を確実に遮蔽でき、その遮蔽構造や取付構造を簡
略化できると共に、組立時の作業性を高め、耐久性や寿
命を向上できるようにしたマフラ装置を提供することに
ある。The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to reliably shield the muffler body with a simple structure, simplify the shielding structure and the mounting structure, and assemble the muffler body. An object of the present invention is to provide a muffler device capable of improving workability at the time and improving durability and life.

【００１１】[0011]

【課題を解決するための手段】上述した課題を解決する
ために請求項１の発明は、長さ方向の両側が閉塞された
筒状体として形成され内部に消音部材が設けられたマフ
ラ本体と、断熱性材料により複数の分割シートとして形
成され前記マフラ本体の外周面を長さ方向に複数に分割
して覆うと共に前記各分割シート間に位置して前記マフ
ラ本体の外周面が露出したマフラ取付用隙間を形成する
断熱シートと、可撓性を有するシート材料により形成さ
れ前記マフラ取付用隙間を含めて前記断熱シートの外側
から前記マフラ本体を覆うアルミニウムシートと、断熱
シートのマフラ取付用隙間の位置で前記アルミニウムシ
ートの外側から前記マフラ本体に巻装されブラケット側
に取付けられる取付具とからなる構成を採用している。In order to solve the above-mentioned problems, the invention of claim 1 is a muffler body which is formed as a cylindrical body whose both sides in the lengthwise direction are closed and which is provided with a muffling member inside. , A muffler mounting which is formed as a plurality of divided sheets of a heat insulating material and covers the outer peripheral surface of the muffler main body by dividing the outer peripheral surface of the muffler into a plurality of pieces in the lengthwise direction and the outer peripheral surface of the muffler main body is exposed between the divided sheets A heat insulating sheet forming a gap for heat treatment, an aluminum sheet formed of a flexible sheet material to cover the muffler body from the outside of the heat insulating sheet including the muffler attaching gap, and a muffler attaching gap of the heat insulating sheet. At a position, a mounting tool is installed around the aluminum sheet from the outside of the muffler body and mounted on the bracket side.

【００１２】このように構成することにより、マフラ本
体の外周面を断熱シートにより覆うことができ、この状
態で断熱シートの各分割シート間にはマフラ取付用隙間
を形成することができる。また、アルミニウムシート
は、マフラ取付用隙間の位置を含めて断熱シートの外側
からマフラ本体の全面を覆うことができる。そして、取
付具は、マフラ取付用隙間の位置でアルミニウムシート
の外側からマフラ本体に巻装でき、マフラ本体の長さ方
向に間隔をもって配置できるので、例えば車両、機械等
の本体側に設けられたブラケットに対してマフラ本体を
安定的に取付けることができる。With such a structure, the outer peripheral surface of the muffler body can be covered with the heat insulating sheet, and in this state, a muffler mounting gap can be formed between the divided sheets of the heat insulating sheet. The aluminum sheet can cover the entire surface of the muffler body from the outside of the heat insulating sheet, including the position of the muffler mounting gap. Since the fixture can be wound around the muffler body from the outside of the aluminum sheet at the position of the muffler attachment gap and can be arranged at intervals in the length direction of the muffler body, it is provided on the body side of the vehicle, machine, etc., for example. The muffler body can be stably attached to the bracket.

【００１３】また、請求項２の発明によると、断熱シー
トは前記マフラ本体の外周面の他に端面も覆う構成とし
ている。According to the second aspect of the present invention, the heat insulating sheet covers not only the outer peripheral surface of the muffler body but also the end surface.

【００１４】これにより、断熱シートは、マフラ取付用
隙間の位置を除いてマフラ本体の全面を覆うことがで
き、その断熱性能を高めることができる。Thus, the heat insulating sheet can cover the entire surface of the muffler body except the position of the muffler mounting gap, and the heat insulating performance can be improved.

【００１５】また、請求項３の発明によると、取付具は
可撓性を有する帯状材または拡縮性を有するクランプ材
により形成し、その長さ方向中間部位を前記マフラ本体
の外周側に巻装した状態で両端側を前記ブラケット側に
取付ける構成としている。Further, according to the invention of claim 3, the fixture is formed by a flexible band-shaped material or a clamp material having expandability, and its longitudinal intermediate portion is wound around the outer peripheral side of the muffler body. In this state, both ends are attached to the bracket side.

【００１６】これにより、例えば取付具を可撓性の帯状
材により形成した場合には、取付具をマフラ取付用隙間
の位置で撓み変形させてマフラ本体の外周側に巻装で
き、その長さ方向両端側をブラケット側に取付けること
により、マフラ本体をブラケットに容易に固定すること
ができる。Thus, for example, when the mounting member is formed of a flexible band-shaped member, the mounting member can be flexibly deformed at the position of the muffler mounting gap and wound around the outer peripheral side of the muffler body, and its length. The muffler body can be easily fixed to the bracket by attaching both ends in the direction to the bracket side.

【００１７】また、取付具を拡縮性を有するクランプ材
により形成した場合には、取付具を拡径させてマフラ本
体の外周側に挿通した後に、取付具をマフラ取付用隙間
の位置で縮径させてマフラ本体の外周側に容易に巻装す
ることができる。When the fitting is formed of a clamp material having expandability, the diameter of the fitting is expanded and inserted into the outer peripheral side of the muffler body, and then the fitting is reduced in diameter at the muffler mounting gap. Thus, the muffler body can be easily wound around the outer peripheral side.

【００１８】[0018]

【発明の実施の形態】以下、本発明の実施の形態による
マフラ装置を、油圧ショベルに適用した場合を例に挙
げ、添付図面を参照して詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION A muffler device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings, taking a case where the muffler device is applied to a hydraulic excavator as an example.

【００１９】１は油圧ショベルの下部走行体、２は該下
部走行体１上に旋回可能に搭載された上部旋回体で、該
上部旋回体２の前部側には、例えば土砂の掘削作業等を
行うためにブーム３Ａ、アーム３Ｂ、バケット３Ｃ等を
備えた作業装置３が俯仰動可能に取付けられている。Reference numeral 1 denotes a lower traveling body of the hydraulic excavator, 2 denotes an upper revolving body which is mounted on the lower traveling body 1 so as to be rotatable. On the front side of the upper revolving body 2, for example, excavation work of earth and sand or the like. In order to perform the above, a work device 3 including a boom 3A, an arm 3B, a bucket 3C, and the like is attached so as to be able to move downward.

【００２０】４は上部旋回体２の支持部分を構成する旋
回フレームで、該旋回フレーム４は、センタフレームと
センタフレームの左，右両側に配置されたサイドフレー
ム（図示せず）等とを有する骨組み構造体として形成さ
れ、センタフレームの前部側には、作業装置３が俯仰動
可能に取付けられるブラケット部４Ａが設けられてい
る。また、旋回フレーム４上には、後述のカウンタウェ
イト５、エンジン６、油圧ポンプ７、建屋カバー１３、
マフラ装置２１等が設けられている。Reference numeral 4 denotes a revolving frame which constitutes a supporting portion of the upper revolving structure 2, and the revolving frame 4 has a center frame and side frames (not shown) arranged on both left and right sides of the center frame. A bracket portion 4A is provided on the front side of the center frame, which is formed as a skeleton structure. Further, on the revolving frame 4, a counterweight 5, an engine 6, a hydraulic pump 7, a building cover 13, which will be described later,
A muffler device 21 and the like are provided.

【００２１】５は作業装置３の重量バランスをとるため
旋回フレーム４の後端側に設けられたカウンタウェイト
で、該カウンタウェイト５は、エンジン６を後方から取
囲むように略円弧状に形成されている。Reference numeral 5 is a counterweight provided on the rear end side of the revolving frame 4 for balancing the weight of the working device 3. The counterweight 5 is formed in a substantially arc shape so as to surround the engine 6 from the rear. ing.

【００２２】６はカウンタウェイト５の前側に位置して
旋回フレーム４の後部側に設けられたエンジンで、該エ
ンジン６は、図２に示す如く、左，右方向に延びた横置
き状態で配置され、その左側には油圧ポンプ７が取付け
られると共に、エンジン６の右側にはラジエータ８が設
けられている。また、エンジン６の上側には、エアクリ
ーナ９と、該エアクリーナ９の左側に位置するマフラ装
置２１とが取付けられ該マフラ装置２１はエンジン６の
排気管６Ａと接続されている。Reference numeral 6 denotes an engine provided on the front side of the counterweight 5 and provided on the rear side of the revolving frame 4, and the engine 6 is arranged in a horizontally placed state extending leftward and rightward as shown in FIG. The hydraulic pump 7 is attached to the left side of the engine 6 and the radiator 8 is provided to the right side of the engine 6. An air cleaner 9 and a muffler device 21 located on the left side of the air cleaner 9 are attached to the upper side of the engine 6, and the muffler device 21 is connected to an exhaust pipe 6A of the engine 6.

【００２３】１０はエンジン６の前側に位置して旋回フ
レーム４を覆う床板１１上に設けられた運転席で、該運
転席１０は、図１に示す如くキャノピ１２によって上方
から覆われている。A driver's seat 10 is provided on a floor plate 11 which is located in front of the engine 6 and covers the revolving frame 4. The driver's seat 10 is covered from above by a canopy 12 as shown in FIG.

【００２４】１３は上部旋回体２の外殻として旋回フレ
ーム４上に設けられた建屋カバーで、該建屋カバー１３
は、エンジン６、油圧ポンプ７、ラジエータ８、エアク
リーナ９、マフラ装置２１等を含めた各種の機器を外側
から覆っている。また、建屋カバー１３のうちエンジン
６等の機器に面した部位は、これらの機器のメンテナン
ス作業を行うために開，閉可能に形成されている。Reference numeral 13 denotes a building cover provided on the revolving frame 4 as an outer shell of the upper revolving structure 2. The building cover 13
Covers various equipment including the engine 6, the hydraulic pump 7, the radiator 8, the air cleaner 9, the muffler device 21 and the like from the outside. Further, a portion of the building cover 13 that faces the equipment such as the engine 6 is formed so as to be openable / closable in order to perform maintenance work on these equipment.

【００２５】２１はエンジン６の排気音を低減させるた
め排気管６Ａに接続されたマフラ装置で、該マフラ装置
２１は、図３ないし図５に示す如く、内部に消音部材
（図示せず）が設けられたマフラ本体２２と、後述の断
熱シート２４、アルミニウムシート３１、帯状取付金具
３２とを含んで構成されている。Reference numeral 21 is a muffler device connected to the exhaust pipe 6A for reducing the exhaust sound of the engine 6. The muffler device 21 has a muffling member (not shown) inside, as shown in FIGS. The muffler main body 22 is provided, and includes a heat insulating sheet 24, an aluminum sheet 31, and a strip-shaped mounting metal fitting 32, which will be described later.

【００２６】ここで、マフラ本体２２は、長さ方向の両
側が閉塞された中空の筒状体として形成され、その一端
側にはエンジン６の排気管６Ａに接続される流入側の配
管部２２Ａが突設されている。また、マフラ本体２２の
他端側には、建屋カバー１３の外部に向けて延設された
流出側の配管部２２Ｂが突設されている。Here, the muffler main body 22 is formed as a hollow cylindrical body whose both sides in the length direction are closed, and one end of the muffler main body 22 is connected to the exhaust pipe 6A of the engine 6 at the inflow side pipe portion 22A. Is projected. Further, on the other end side of the muffler main body 22, an outflow side pipe portion 22B extending toward the outside of the building cover 13 is provided in a protruding manner.

【００２７】また、エンジン６の上部側には、例えば金
属板等からなるブラケット２３が複数の取付ねじ２３Ａ
等を用いて締着され、該ブラケット２３は、マフラ装置
２１をエンジン６の上部側に固定している。この場合、
ブラケット２３には、上向きに突出してマフラ装置２１
を支持する支持部２３Ｂが設けられている。A bracket 23 made of, for example, a metal plate is provided on the upper side of the engine 6 with a plurality of mounting screws 23A.
The bracket 23 fixes the muffler device 21 to the upper side of the engine 6 by tightening the bracket 23. in this case,
The bracket 23 has a muffler device 21 protruding upward.
Is provided with a supporting portion 23B for supporting the.

【００２８】２４は断熱性材料により形成された断熱シ
ートで、該断熱シート２４は、例えばガラス繊維等を含
む発泡性材料等により可撓性を有する厚肉なシート部材
として形成されている。そして、断熱シート２４は、図
４、図６に示す如く、マフラ本体２２の長さ方向の一端
側，他端側を覆う筒端シート部２５，２６と、該筒端シ
ート部２５，２６間に配置され、マフラ本体２２の長さ
方向中間部位を覆う中間シート部２７と、例えば接着等
の手段によって筒端シート部２５，２６の端面に設けら
れ、配管部２２Ａ，２２Ｂを取囲む位置でマフラ本体２
２の端面を覆う環状の端面シート部２８，２９とからな
り、これらはマフラ本体２２を長さ方向に対して３分割
した位置で覆う分割シートとして形成されている。Reference numeral 24 is a heat insulating sheet formed of a heat insulating material, and the heat insulating sheet 24 is formed as a flexible and thick sheet member made of, for example, a foaming material containing glass fiber or the like. As shown in FIGS. 4 and 6, the heat insulating sheet 24 is provided between the tube end sheet portions 25 and 26 covering one end side and the other end side in the length direction of the muffler main body 22, and between the tube end sheet portions 25 and 26. And the intermediate sheet portion 27 that covers the longitudinal intermediate portion of the muffler main body 22 and the end surfaces of the tube end sheet portions 25 and 26 by means such as adhesion, and at a position surrounding the pipe portions 22A and 22B. Muffler body 2
It is composed of annular end face sheet portions 28 and 29 that cover the end face of No. 2, and these are formed as divided sheets that cover the muffler main body 22 at three divided positions in the longitudinal direction.

【００２９】この場合、筒端シート部２５，２６と中間
シート部２７は、両端側が開口した筒状に形成され、マ
フラ本体２２の外周側に嵌合されると共に、これらのシ
ート部２５，２６，２７間には、図４に示す如くマフラ
本体２２が露出した環状の隙間が形成されている。そし
て、これらの隙間はマフラ本体２２の長さ方向に間隔を
もって配置され、帯状取付金具３２が装着される２箇所
のマフラ取付用隙間３０となっている。In this case, the tube end sheet portions 25, 26 and the intermediate sheet portion 27 are formed in a tube shape with both ends open, and are fitted to the outer peripheral side of the muffler body 22 and at the same time, these sheet portions 25, 26. , 27, an annular gap is formed in which the muffler body 22 is exposed, as shown in FIG. These gaps are arranged in the longitudinal direction of the muffler main body 22 with a gap therebetween, and are two muffler mounting gaps 30 to which the band-shaped mounting fittings 32 are mounted.

【００３０】３１は例えばアルミニウムの薄膜等により
覆われたアルミニウムシートで、該アルミニウムシート
３１は、図７に示す如く薄肉な可撓性シート部材からな
り、例えば接着等の手段によって断熱シート２４に固着
されている。また、アルミニウムシート３１は、断熱シ
ート２４とマフラ取付用隙間３０とを径方向外側から覆
う筒状の外周カバー部３１Ａと、断熱シート２４の端面
シート部２８，２９を覆う環状の端面カバー部３１Ｂ，
３１Ｂとにより構成されている。Reference numeral 31 denotes an aluminum sheet covered with, for example, a thin film of aluminum, and the aluminum sheet 31 is made of a thin flexible sheet member as shown in FIG. 7, and is fixed to the heat insulating sheet 24 by means of adhesion or the like. Has been done. The aluminum sheet 31 has a cylindrical outer peripheral cover portion 31A that covers the heat insulating sheet 24 and the muffler mounting gap 30 from the outside in the radial direction, and an annular end surface cover portion 31B that covers the end surface sheet portions 28 and 29 of the heat insulating sheet 24. ，
And 31B.

【００３１】ここで、外周カバー部３１Ａは、各マフラ
取付用隙間３０に沿って凹陥状に撓み変形し、この撓み
変形部位には帯状取付金具３２が装着されている。そし
て、アルミニウムシート３１は、断熱シート２４の外側
からマフラ本体２２の全面を覆い、例えばエンジン６等
のメンテナンス作業時には、作業者が高温のマフラ本体
２２に接触するのを断熱シート２４と協働して防止する
ものである。Here, the outer peripheral cover portion 31A is flexibly deformed in a concave shape along each muffler mounting gap 30, and a band-shaped mounting metal fitting 32 is attached to the flexurally deformed portion. The aluminum sheet 31 covers the entire surface of the muffler main body 22 from the outside of the heat insulating sheet 24, and cooperates with the heat insulating sheet 24 to prevent the worker from coming into contact with the hot muffler main body 22 during maintenance work such as the engine 6. To prevent it.

【００３２】３２はマフラ本体２２をブラケット２３に
固定する例えば２個の取付具としての帯状取付金具で、
該各帯状取付金具３２は、図５、図８に示す如く、例え
ば薄肉な金属板等により可撓性を有する細長い帯状材と
して形成され、その両端側には、外周側に雄ねじが形成
されたねじ付きロッド３２Ａ，３２Ａが溶接等の手段に
より固着されている。Reference numeral 32 is a band-like mounting metal fitting for fixing the muffler main body 22 to the bracket 23, for example as two mounting tools.
As shown in FIGS. 5 and 8, each of the strip-shaped mounting members 32 is formed as a flexible strip-shaped member made of, for example, a thin metal plate, and male threads are formed on the outer peripheral side at both ends thereof. The threaded rods 32A, 32A are fixed by means such as welding.

【００３３】そして、帯状取付金具３２は、その長さ方
向中間部位がマフラ取付用隙間３０内に配置され、この
隙間３０内で撓み変形することによりアルミニウムシー
ト３１の外側からマフラ本体２２の外周に沿って円弧状
に巻装されている。また、帯状取付金具３２の各ねじ付
きロッド３２Ａは、例えば２個のナット３３等を用いて
ブラケット２３に締着されている。これにより、各帯状
取付金具３２は、ブラケット２３の支持部２３Ｂとの間
でマフラ本体２２を支持し、ブラケット２３と協働して
マフラ本体２２をエンジン６に固定しているものであ
る。The band-shaped mounting member 32 is disposed in the muffler mounting gap 30 at its intermediate portion in the lengthwise direction, and is flexibly deformed in the gap 30 to extend from the outer side of the aluminum sheet 31 to the outer periphery of the muffler body 22. It is wound in an arc shape along. Further, each threaded rod 32A of the strip-shaped mounting member 32 is fastened to the bracket 23 by using, for example, two nuts 33 or the like. As a result, each strip-shaped mounting member 32 supports the muffler body 22 between itself and the support portion 23B of the bracket 23, and cooperates with the bracket 23 to fix the muffler body 22 to the engine 6.

【００３４】本実施の形態による油圧ショベルは上述の
如き構成を有するもので、次にその作動について説明す
る。The hydraulic excavator according to the present embodiment has the above-mentioned structure, and its operation will be described below.

【００３５】まず、油圧ショベルの運転時には、エンジ
ン６を作動させると、油圧ポンプ７が駆動され、車両に
搭載された走行モータ、旋回モータ（図示せず）や作業
装置３の各油圧シリンダには、油圧ポンプ７から圧油が
供給される。これにより、油圧ショベルのオペレータ
は、車両を走行させたり、上部旋回体２を旋回させると
共に、作業装置３を作動させて土砂の掘削作業等を行う
ことができる。First, when the engine 6 is operated during the operation of the hydraulic excavator, the hydraulic pump 7 is driven, and the traveling motor, the swing motor (not shown) and the hydraulic cylinders of the working device 3 mounted on the vehicle are driven. The hydraulic oil is supplied from the hydraulic pump 7. This allows the operator of the hydraulic excavator to drive the vehicle, rotate the upper-part turning body 2, and actuate the work device 3 to perform excavation work of earth and sand.

【００３６】また、例えばエンジン６等のメンテナンス
作業を行う場合には、建屋カバー１３の一部を開き、エ
ンジン６を含めた各種機器の点検等を行う。この場合、
エンジン６の上部側にはマフラ装置２１が取付けられて
いるが、そのマフラ本体２２は断熱シート２４とアルミ
ニウムシート３１とによって全面的に遮蔽されている。
このため、例えばエンジン６を停止した直後であって
も、作業者等が高温のマフラ本体２２に誤って接触する
のを防止でき、各種のメンテナンス作業を安全に行うこ
とができる。Further, for example, when performing maintenance work on the engine 6 or the like, a part of the building cover 13 is opened and various equipment including the engine 6 is inspected. in this case,
A muffler device 21 is attached to the upper side of the engine 6, but the muffler body 22 is entirely shielded by a heat insulating sheet 24 and an aluminum sheet 31.
Therefore, for example, even immediately after the engine 6 is stopped, it is possible to prevent an operator or the like from accidentally coming into contact with the high temperature muffler body 22, and it is possible to safely perform various maintenance work.

【００３７】次に、図６ないし図８を参照しつつ、マフ
ラ装置２１の組立及び取付作業について述べる。Next, the assembling and mounting work of the muffler device 21 will be described with reference to FIGS.

【００３８】まず、マフラ装置２１の組立作業では、図
６に示す如く、マフラ本体２２に対して、断熱シート２
４の筒端シート部２５，２６、中間シート部２７および
端面シート部２８，２９を取付ける。この場合、筒端シ
ート部２５，２６と端面シート部２８，２９とは、例え
ば接着等の手段により予め一体化しておく構成としても
よい。そして、断熱シート２４の取付後には、マフラ本
体２２が各マフラ取付用隙間３０の位置で露出した２箇
所の部位を除いて断熱シート２４により覆われた状態と
なる。First, in the assembling work of the muffler device 21, as shown in FIG. 6, the heat insulating sheet 2 is attached to the muffler body 22.
4, the cylinder end sheet portions 25 and 26, the intermediate sheet portion 27, and the end face sheet portions 28 and 29 are attached. In this case, the tube end sheet portions 25, 26 and the end surface sheet portions 28, 29 may be integrated in advance by means such as adhesion. After the heat insulating sheet 24 is attached, the muffler body 22 is covered with the heat insulating sheet 24 except for the two exposed portions at the respective muffler attaching gaps 30.

【００３９】次に、マフラ本体２２には、図７に示す如
く断熱シート２４の外側からアルミニウムシート３１の
外周カバー部３１Ａを巻装し、この外周カバー部３１Ａ
を断熱シート２４の外周側に固着すると共に、断熱シー
ト２４の端面シート部２８，２９には、アルミニウムシ
ート３１の各端面カバー部３１Ｂを固着する。Next, as shown in FIG. 7, the outer peripheral cover portion 31A of the aluminum sheet 31 is wound around the muffler main body 22 from the outside of the heat insulating sheet 24, and the outer peripheral cover portion 31A is wound.
Is fixed to the outer peripheral side of the heat insulating sheet 24, and each end surface cover portion 31B of the aluminum sheet 31 is fixed to the end surface sheet portions 28 and 29 of the heat insulating sheet 24.

【００４０】そして、マフラ本体２２の外周側には、図
８に示す如く、アルミニウムシート３１の外側から各マ
フラ取付用隙間３０の位置に帯状取付金具３２を巻装
し、そのねじ付きロッド３２Ａをエンジン６側のブラケ
ット２３に締着する。これにより、マフラ本体２２は、
その長さ方向の２箇所で帯状取付金具３２とブラケット
２３の支持部２３Ｂとの間に固定された状態となるの
で、マフラ装置２１をエンジン６側に安定的に取付ける
ことができる。Then, on the outer peripheral side of the muffler main body 22, as shown in FIG. 8, a strip-shaped mounting metal fitting 32 is wound from the outside of the aluminum sheet 31 at the position of each muffler mounting gap 30, and its threaded rod 32A is attached. Tighten the bracket 23 on the engine 6 side. As a result, the muffler body 22 is
The muffler device 21 can be stably attached to the engine 6 side because the muffler device 21 is fixed between the strip-shaped mounting member 32 and the support portion 23B of the bracket 23 at two positions in the length direction.

【００４１】かくして、本実施の形態によれば、マフラ
本体２２の外面側には、マフラ取付用隙間３０を形成す
る断熱シート２４を設けると共に、マフラ取付用隙間３
０の位置でアルミニウムシート３１の外側から帯状取付
金具３２を巻装する構成としたので、断熱シート２４の
筒端シート部２５，２６、中間シート部２７および端面
シート部２８，２９によりマフラ本体２２を長さ方向に
対して３分割した位置で覆うことができる。Thus, according to the present embodiment, the heat insulating sheet 24 forming the muffler mounting gap 30 is provided on the outer surface side of the muffler main body 22, and the muffler mounting gap 3 is provided.
Since the band-shaped mounting member 32 is wound from the outside of the aluminum sheet 31 at the position 0, the muffler main body 22 is formed by the tube end sheet portions 25, 26, the intermediate sheet portion 27, and the end face sheet portions 28, 29 of the heat insulating sheet 24. Can be covered at three divided positions in the length direction.

【００４２】これにより、マフラ装置２１の組立時に
は、断熱シート２４のシート部２５〜２９をマフラ本体
２２に取付けるだけで、２箇所のマフラ取付用隙間３０
を正確な位置に形成でき、例えば従来技術のように断熱
材に切取加工等を施す必要がなくなり、組立作業を効率
よく行うことができる。また、断熱シート２４は、端面
シート部２８，２９を有しているので、マフラ取付用隙
間３０の位置を除いてマフラ本体２２の全面を覆うこと
ができ、その断熱性能を高めることができる。As a result, when the muffler device 21 is assembled, only the sheet portions 25 to 29 of the heat insulating sheet 24 are attached to the muffler body 22, and the two muffler attachment gaps 30 are provided.
Can be formed at an accurate position, and it is not necessary to cut the heat insulating material as in the prior art, and the assembling work can be performed efficiently. Further, since the heat insulating sheet 24 has the end face sheet portions 28 and 29, it is possible to cover the entire surface of the muffler main body 22 except for the position of the muffler mounting gap 30, and to improve the heat insulating performance thereof.

【００４３】また、アルミニウムシート３１は、マフラ
取付用隙間３０の位置を含めて断熱シート２４の外側か
らマフラ本体２２の全面を覆うことができるので、エン
ジン６等のメンテナンス作業時には、断熱シート２４と
アルミニウムシート３１とによりマフラ本体２２を作業
者等から確実に遮蔽することができる。しかも、例えば
ダスト、水分等の異物がアルミニウムシート３１の外側
からマフラ本体２２に接触するのを防止でき、簡単な遮
蔽構造によりマフラ本体２２を異物から保護できると共
に、その耐久性や寿命を高めることができる。さらに、
断熱シート２４の端面等をアルミニウムシート３１によ
って覆い隠すことができるから、美観を向上させること
ができる。Further, since the aluminum sheet 31 can cover the entire surface of the muffler main body 22 from the outside of the heat insulating sheet 24 including the position of the muffler mounting gap 30, the heat insulating sheet 24 and the heat insulating sheet 24 can be used during the maintenance work of the engine 6 and the like. With the aluminum sheet 31, the muffler body 22 can be reliably shielded from an operator or the like. Moreover, foreign matter such as dust and water can be prevented from coming into contact with the muffler body 22 from the outside of the aluminum sheet 31, and the muffler body 22 can be protected from the foreign matter by a simple shielding structure and its durability and life can be increased. You can further,
Since the end surface and the like of the heat insulating sheet 24 can be covered with the aluminum sheet 31, the appearance can be improved.

【００４４】また、マフラ取付用隙間３０をマフラ本体
２２の長さ方向に離間した２箇所に設けているので、帯
状取付金具３２は、各マフラ取付用隙間３０の位置で薄
肉なアルミニウムシート３１を介してマフラ本体２２を
安定的に支持することができる。この場合、帯状取付金
具３２を断熱シート２４の外周側に巻装せずに済むか
ら、例えば振動、経時劣化等が原因となって断熱シート
２４の肉厚が変化する場合でも、帯状取付金具３２が弛
むのを防止でき、マフラ本体２２をエンジン６側のブラ
ケット２３に対し長期間に亘って良好な状態で取付ける
ことができる。Further, since the muffler mounting gaps 30 are provided at two positions separated from each other in the longitudinal direction of the muffler body 22, the strip-shaped mounting metal fittings 32 are provided with thin aluminum sheets 31 at the respective muffler mounting gaps 30. The muffler main body 22 can be stably supported via this. In this case, since it is not necessary to wind the strip-shaped mounting bracket 32 around the outer peripheral side of the heat insulating sheet 24, even if the thickness of the heat insulating sheet 24 changes due to vibration, deterioration over time, etc., the strip-shaped mounting bracket 32. Can be prevented, and the muffler main body 22 can be attached to the bracket 23 on the engine 6 side in a good condition for a long period of time.

【００４５】しかも、帯状取付金具３２を可撓性の金属
板等により帯状材として形成し、その端部側に設けられ
たねじ付きロッド３２Ａをブラケット２３に締着したの
で、マフラ本体２２には、ブラケット２３側に取付ける
ための特別な脚部等を設ける必要がなくなり、その取付
構造を簡略化できると共に、帯状取付金具３２を撓み変
形させてマフラ本体２２の取付作業を容易に行うことが
できる。Moreover, since the band-shaped mounting member 32 is formed as a band-shaped member from a flexible metal plate or the like, and the threaded rod 32A provided on the end side thereof is fastened to the bracket 23, the muffler main body 22 has Since it is not necessary to provide a special leg portion or the like for mounting on the bracket 23 side, the mounting structure can be simplified, and the mounting work of the muffler main body 22 can be easily performed by flexibly deforming the band-shaped mounting bracket 32. .

【００４６】なお、前記実施の形態では、マフラ本体２
２を、断熱シート２４により長さ方向に対して３分割し
た位置で覆う構成としたが、本発明はこれに限らず、断
熱シートは、マフラ本体２２の長さ方向に２分割しても
よく、または４分割以上の複数に分割する構成としても
よい。In the above embodiment, the muffler body 2
2 is covered with the heat insulating sheet 24 at a position divided into three in the length direction, but the present invention is not limited to this, and the heat insulating sheet may be divided into two in the length direction of the muffler main body 22. Alternatively, it may be divided into a plurality of four or more.

【００４７】即ち、例えば図９に示す第１の変形例のよ
うに、マフラ装置４１の断熱シート４２を筒端シート部
４３，４４と端面シート部４５，４６とにより長さ方向
に２分割して形成し、これらの間に１箇所のマフラ取付
用隙間４７を形成すると共に、この隙間４７に配置した
１個の帯状取付金具３２′をマフラ本体２２に巻装する
構成としてもよい。That is, for example, as in the first modification shown in FIG. 9, the heat insulating sheet 42 of the muffler device 41 is divided into two in the length direction by the tube end sheet portions 43 and 44 and the end face sheet portions 45 and 46. It is also possible to form one muffler mounting gap 47 between them and to wind one strip-shaped mounting metal fitting 32 ′ arranged in this gap 47 around the muffler main body 22.

【００４８】また、図１０に示す第２の変形例のよう
に、マフラ装置５１の断熱シート５２を筒端シート部５
３，５４、中間シート部５５，５６および端面シート部
５７，５８により長さ方向に４分割して形成し、これら
の間に３箇所のマフラ取付用隙間５９を形成すると共
に、該各隙間５９に配置した３個の帯状取付金具３２を
マフラ本体２２に巻装する構成としてもよい。Further, as in the second modification shown in FIG. 10, the heat insulating sheet 52 of the muffler device 51 is attached to the tube end sheet portion 5.
3, 54, the intermediate sheet portions 55 and 56, and the end face sheet portions 57 and 58 are formed by being divided into four in the lengthwise direction, and three muffler mounting gaps 59 are formed between these and the respective gaps 59 are formed. It is also possible to wind the muffler main body 22 with the three strip-shaped mounting fittings 32 arranged at.

【００４９】また、図１１に示す第３の変形例のよう
に、マフラ装置６１の断熱シート６２を、マフラ本体２
２の長さ方向両側と端面とを覆う有底筒状の端面・筒端
シート部６３，６４と、マフラ本体２２の長さ方向中間
部位を覆う筒状の中間シート部６５とにより構成しても
よい。Further, as in the third modification shown in FIG. 11, the heat insulating sheet 62 of the muffler device 61 is attached to the muffler body 2
2 is constituted by bottomed tubular end face / cylindrical end sheet portions 63 and 64 that cover both sides in the length direction and the end face, and a tubular intermediate sheet portion 65 that covers the longitudinal intermediate portion of the muffler body 22. Good.

【００５０】一方、実施の形態では、取付具を薄肉な金
属板により帯状取付金具３２として構成したが、本発明
はこれに限らず、例えば図１２、図１３に示す第４の変
形例のように、マフラ装置７１に用いる取付具として、
剛性を有する金属材料により形成されたクランプリング
７２を用いる構成としてもよい。この場合、クランプリ
ング７２は、略円弧状の半割体７２Ａ，７２Ａが連結ピ
ン７２Ｂにより回動可能に連結され、これらの半割体７
２Ａ，７２Ａを図１３中の左，右方向に開くことにより
拡径し、半割体７２Ａを閉じることにより縮径する構成
となっている。そして、クランプリング７２は、各半割
体７２Ａによってマフラ本体２２をマフラ取付用隙間３
０の位置で左，右両側から挟持し、その端部側はボルト
７３等を用いてブラケット２３に取付けられている。On the other hand, in the embodiment, the fitting is made of the thin metal plate as the band-shaped fitting 32, but the present invention is not limited to this, and is, for example, a fourth modification shown in FIGS. 12 and 13. In addition, as a fixture used for the muffler device 71,
The clamp ring 72 formed of a rigid metal material may be used. In this case, in the clamp ring 72, substantially arc-shaped half-split bodies 72A, 72A are rotatably connected by a connecting pin 72B, and these half-split bodies 7 are
The diameter is expanded by opening 2A and 72A in the left and right directions in FIG. 13, and is decreased by closing the half-split body 72A. Then, the clamp ring 72 attaches the muffler body 22 to the muffler mounting gap 3 by each half body 72A.
It is clamped from the left and right sides at the position of 0, and its end side is attached to the bracket 23 using bolts 73 and the like.

【００５１】これにより、マフラ本体２２をクランプリ
ング７２によって上，下方向、左，右方向に支持でき、
ブラケット２３側の支持部２３Ｂ等を省略できると共
に、マフラ装置７１の取付時には、各半割体７２Ａを拡
径、縮径させることによりクランプリング７２をマフラ
本体２２の外周側へと容易に巻装することができる。As a result, the muffler body 22 can be supported by the clamp ring 72 in the upward, downward, left, and right directions,
The support portion 23B on the bracket 23 side can be omitted, and at the time of mounting the muffler device 71, the clamp ring 72 can be easily wound around the outer peripheral side of the muffler body 22 by expanding and contracting the halves 72A. can do.

【００５２】また、実施の形態では、取付具として帯状
取付金具３２を用いる構成としたが、本発明はこれに限
らず、例えば可撓性を有する帯状の樹脂材料等により取
付具を構成してもよい。そして、この場合には、例えば
取付具の端部側に鉤形のフックや係合穴等からなる係合
手段を設け、この係合手段をブラケット２３側に係止す
る構成とすればよい。Further, in the embodiment, the band-shaped mounting member 32 is used as the mounting member, but the present invention is not limited to this, and the mounting member is composed of, for example, a flexible band-shaped resin material or the like. Good. Then, in this case, for example, an engaging means composed of a hook-shaped hook, an engaging hole, or the like may be provided on the end side of the fixture, and the engaging means may be locked to the bracket 23 side.

【００５３】さらに、実施の形態では、マフラ装置２１
を油圧ショベルに適用した場合を例に挙げて述べたが、
本発明はこれに限るものではなく、例えば油圧クレー
ン、ホイールローダ等からなる他の建設機械や、農業機
械、自動車等からなる各種の機械に適用できるのは勿論
である。Further, in the embodiment, the muffler device 21
Was described by taking the case of applying to a hydraulic excavator as an example.
The present invention is not limited to this, and it is needless to say that the present invention can be applied to other construction machines such as hydraulic cranes and wheel loaders, and various machines such as agricultural machines and automobiles.

【００５４】[0054]

【発明の効果】以上詳述した通り、請求項１の発明によ
れば、マフラ本体には、断熱シートのマフラ取付用隙間
の位置でアルミニウムシートの外側から取付具を巻装す
る構成としたので、マフラ装置の組立時には、断熱シー
トの各分割シートをマフラ本体に配置するだけで、マフ
ラ取付用隙間を正確な位置に形成でき、組立作業を容易
に行うことができる。また、アルミニウムシートは、断
熱シートの外側からマフラ本体の全面を覆うことができ
るので、高温となるマフラ本体を確実に遮蔽できると共
に、外部の異物等に対してマフラ本体を保護でき、その
耐久性や寿命を高めることができる。そして、取付具
は、長さ方向の複数箇所に配置されたマフラ取付用隙間
の位置で薄肉なアルミニウムシートを介してマフラ本体
を安定的に支持でき、例えば車両、機械等の本体側に設
けられたブラケットに対しマフラ本体を長期間に亘って
良好な状態で取付けることができる。As described in detail above, according to the first aspect of the invention, the muffler main body has the structure in which the fixture is wound from the outside of the aluminum sheet at the position of the muffler attachment gap of the heat insulating sheet. At the time of assembling the muffler device, the muffler mounting gap can be formed at an accurate position by simply disposing each of the divided sheets of the heat insulating sheet on the muffler body, and the assembling work can be easily performed. Also, since the aluminum sheet can cover the entire surface of the muffler body from the outside of the heat insulating sheet, it can reliably shield the muffler body that becomes hot and protect the muffler body from external foreign matter, etc. And life can be increased. Then, the fixture can stably support the muffler main body through the thin aluminum sheet at the positions of the muffler mounting gaps arranged at a plurality of positions in the length direction, and is provided on the main body side of the vehicle, machine, etc., for example. The muffler body can be attached to the bracket in good condition for a long period of time.

【００５５】また、請求項２の発明によれば、断熱シー
トはマフラ本体の外周面の他に端面も覆う構成としたの
で、断熱シートによりマフラ取付用隙間の位置を除いて
マフラ本体の全面を覆うことができ、その断熱性能を高
めることができる。Further, according to the invention of claim 2, since the heat insulating sheet is configured to cover not only the outer peripheral surface of the muffler body but also the end surface, the entire surface of the muffler body is covered by the heat insulating sheet except for the position of the muffler mounting gap. It can be covered and its thermal insulation performance can be enhanced.

【００５６】また、請求項３の発明によれば、可撓性を
有する帯状材または拡縮性を有するクランプ材により取
付具を形成し、その長さ方向中間部位をマフラ本体の外
周側に巻装して両端側をブラケット側に取付ける構成と
したので、例えば取付具を帯状材により形成した場合に
は、取付具を撓み変形させてマフラ本体の外周側に容易
に巻装することができる。また、取付具をクランプ材に
より形成した場合には、取付具を拡径、縮径させること
によりマフラ本体の外周側に容易に巻装することができ
る。従って、これらの取付具を用いてマフラ本体をブラ
ケット側に効率よく取付けることができる。また、マフ
ラ本体に特別な脚部等を設ける必要がなくなり、その取
付構造を簡略化することができる。According to the third aspect of the invention, the fitting is formed of a flexible band-shaped material or a clamp material having expandability, and the lengthwise intermediate portion is wound around the outer peripheral side of the muffler body. Since both ends are attached to the bracket side, for example, when the attachment is formed of a band-shaped material, the attachment can be flexibly deformed and easily wound around the outer peripheral side of the muffler body. Further, when the attachment is made of a clamp material, it can be easily wound around the outer periphery of the muffler body by expanding or reducing the diameter of the attachment. Therefore, the muffler body can be efficiently attached to the bracket side using these attachments. Further, it is not necessary to provide a special leg portion or the like on the muffler body, and the mounting structure thereof can be simplified.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施の形態によるマフラ装置が適用さ
れる油圧ショベルを示す正面図である。FIG. 1 is a front view showing a hydraulic excavator to which a muffler device according to an embodiment of the present invention is applied.

【図２】上部旋回体の後部側を破断して示す油圧ショベ
ルの拡大平面図である。FIG. 2 is an enlarged plan view of a hydraulic excavator showing a rear side of an upper revolving structure in a cutaway manner.

【図３】エンジンの上部側に取付けられたマフラ装置を
示す斜視図である。FIG. 3 is a perspective view showing a muffler device attached to the upper side of the engine.

【図４】本発明の実施の形態によるマフラ装置を一部破
断して示す正面図である。FIG. 4 is a partially cutaway front view of the muffler device according to the embodiment of the present invention.

【図５】図４中の矢示Ｖ−Ｖ方向からみたマフラ装置の
断面図である。5 is a cross-sectional view of the muffler device as seen from the direction of arrows VV in FIG.

【図６】マフラ本体に断熱シートを取付ける状態を示す
斜視図である。FIG. 6 is a perspective view showing a state in which a heat insulating sheet is attached to the muffler body.

【図７】マフラ本体に断熱シートの外側からアルミニウ
ムシートを取付ける状態を示す斜視図である。FIG. 7 is a perspective view showing a state where an aluminum sheet is attached to the muffler body from the outside of the heat insulating sheet.

【図８】帯状取付金具を用いてマフラ装置をエンジン側
のブラケットに取付ける状態を示す斜視図である。FIG. 8 is a perspective view showing a state in which the muffler device is attached to a bracket on the engine side using a band-shaped attachment fitting.

【図９】本発明の第１の変形例によるマフラ装置を示す
正面図である。FIG. 9 is a front view showing a muffler device according to a first modification of the present invention.

【図１０】本発明の第２の変形例によるマフラ装置を示
す正面図である。FIG. 10 is a front view showing a muffler device according to a second modification of the present invention.

【図１１】本発明の第３の変形例によるマフラ装置を図
６と同様の状態で示す斜視図である。FIG. 11 is a perspective view showing a muffler device according to a third modification of the present invention in a state similar to that of FIG.

【図１２】本発明の第４の変形例によるマフラ装置を示
す正面図である。FIG. 12 is a front view showing a muffler device according to a fourth modification of the present invention.

【図１３】図１２中のXIII−XIII方向からみたマフラ装
置の断面図である。13 is a cross-sectional view of the muffler device as seen from the direction XIII-XIII in FIG.

【図１４】従来技術のマフラ装置を一部破断して示す正
面図である。FIG. 14 is a partially cutaway front view showing a conventional muffler device.

【図１５】図１４中のXV−XV方向からみたマフラ装置の
断面図である。15 is a cross-sectional view of the muffler device as seen from the XV-XV direction in FIG.

【符号の説明】[Explanation of symbols]

１ 下部走行体 ２ 上部旋回体 ４ 旋回フレーム ５ カウンタウェイト ６ エンジン ６Ａ 排気管 １３ 建屋カバー ２１，４１，５１，６１，７１ マフラ装置 ２２ マフラ本体 ２２Ａ，２２Ｂ 配管部 ２３ ブラケット ２３Ａ 取付ねじ ２３Ｂ 支持部 ２４，４２，５２，６２ 断熱シート ２５，２６，４３，４４，５３，５４ 筒端シート部
（分割シート） ２７，５５，５６，６５ 中間シート部（分割シート） ２８，２９，４５，４６，５７，５８ 端面シート部
（分割シート） ３０，４７，５９ マフラ取付用隙間 ３１ アルミニウムシート ３１Ａ 外周カバー部 ３１Ｂ 端面カバー部 ３２，３２′ 帯状取付金具（取付具） ３２Ａ，３２Ａ′ ねじ付きロッド ６３，６４ 端面・筒端シート部（分割シート） ７２ クランプリング（取付具）1 Lower Traveling Body 2 Upper Revolving Body 4 Revolving Frame 5 Counterweight 6 Engine 6A Exhaust Pipe 13 Building Cover 21, 41, 51, 61, 71 Muffler Device 22 Muffler Main Body 22A, 22B Piping 23 Bracket 23A Mounting Screw 23B Support 24 , 42, 52, 62 Insulation sheet 25, 26, 43, 44, 53, 54 Tube end sheet portion (divided sheet) 27, 55, 56, 65 Intermediate sheet portion (divided sheet) 28, 29, 45, 46, 57 , 58 End face sheet portion (divided sheet) 30, 47, 59 Muffler mounting gap 31 Aluminum sheet 31A Outer peripheral cover portion 31B End face cover portion 32, 32 'Belt-shaped mounting bracket (mounting tool) 32A, 32A' Threaded rod 63, 64 End face / Cylinder end sheet part (split sheet) 72 Clamp ring (mounting tool)

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ１６Ｂ 35/00 Ｆ１６Ｂ 35/00 Ｂ (72)発明者 中谷 賢一郎 滋賀県甲賀郡水口町笹ヶ丘１−２ 株式会 社日立建機ティエラ滋賀工場内 (72)発明者 國領 おさむ 滋賀県甲賀郡水口町笹ヶ丘１−２ 株式会 社日立建機ティエラ滋賀工場内 (72)発明者 佐伯 文将 滋賀県甲賀郡水口町笹ヶ丘１−２ 株式会 社日立建機ティエラ滋賀工場内 Ｆターム(参考） 2D015 CA02 CA03 3G004 AA01 AA03 AA04 BA00 DA11 DA15 DA21 EA05 FA06 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) F16B 35/00 F16B 35/00 B (72) Inventor Kenichiro Nakatani 1-Sasagaoka, Mizuguchi-cho, Koga-gun, Shiga Prefecture 2 Inside Hitachi Construction Machinery Tierra Shiga Factory (72) Inventor Osamu Kokuryo 1-2 Sasagaoka, Mizuguchi-cho, Koga-gun, Shiga Prefecture Inside Hitachi Construction Machinery Tierra Shiga Factory (72) Inventor Fumimasa Saeki Shiga 1-2 Sasagaoka, Mizuguchi-machi, Koga-gun, Shizuoka F-term in Hitachi Construction Machinery Tierra Shiga factory (reference) 2D015 CA02 CA03 3G004 AA01 AA03 AA04 BA00 DA11 DA15 DA21 EA05 FA06

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 長さ方向の両側が閉塞された筒状体とし
て形成され内部に消音部材が設けられたマフラ本体と、 断熱性材料により複数の分割シートとして形成され前記
マフラ本体の外周面を長さ方向に複数に分割して覆うと
共に前記各分割シート間に位置して前記マフラ本体の外
周面が露出したマフラ取付用隙間を形成する断熱シート
と、 可撓性を有するシート材料により形成され前記マフラ取
付用隙間を含めて前記断熱シートの外側から前記マフラ
本体を覆うアルミニウムシートと、 前記断熱シートのマフラ取付用隙間の位置で前記アルミ
ニウムシートの外側から前記マフラ本体に巻装されブラ
ケット側に取付けられる取付具とから構成してなるマフ
ラ装置。1. A muffler body, which is formed as a cylindrical body whose both sides in the lengthwise direction are closed and is provided with a sound deadening member therein, and an outer peripheral surface of the muffler body, which is formed as a plurality of divided sheets of a heat insulating material. A heat insulating sheet which is divided into a plurality of pieces in the lengthwise direction and which is formed between the divided sheets to form a muffler mounting gap in which the outer peripheral surface of the muffler body is exposed, and a heat insulating sheet formed of a flexible sheet material. An aluminum sheet that covers the muffler body from the outside of the heat insulating sheet including the muffler mounting gap, and a bracket side that is wound around the muffler body from the outside of the aluminum sheet at the position of the muffler mounting gap of the heat insulating sheet. A muffler device composed of a mounting tool that can be mounted. 【請求項２】 前記断熱シートは前記マフラ本体の外周
面の他に端面も覆う構成としてなる請求項１に記載のマ
フラ装置。2. The muffler device according to claim 1, wherein the heat insulating sheet covers not only the outer peripheral surface of the muffler body but also the end surface. 【請求項３】 前記取付具は可撓性を有する帯状材また
は拡縮性を有するクランプ材により形成し、その長さ方
向中間部位を前記マフラ本体の外周側に巻装した状態で
両端側を前記ブラケット側に取付ける構成としてなる請
求項１または２に記載のマフラ装置。3. The mounting member is formed of a flexible band-shaped material or a clamp material having expandability, and both ends thereof are wound in a state where an intermediate portion in the length direction is wound around the outer peripheral side of the muffler body. The muffler device according to claim 1 or 2, wherein the muffler device is configured to be mounted on the bracket side.
JP2001233908A 2001-08-01 2001-08-01 Muffler device Pending JP2003041931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001233908A JP2003041931A (en) 2001-08-01 2001-08-01 Muffler device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001233908A JP2003041931A (en) 2001-08-01 2001-08-01 Muffler device

Publications (1)

Publication Number Publication Date
JP2003041931A true JP2003041931A (en) 2003-02-13

Family

ID=19065619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001233908A Pending JP2003041931A (en) 2001-08-01 2001-08-01 Muffler device

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Cited By (18)

* Cited by examiner, † Cited by third party
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KR100893660B1 (en) 2007-12-12 2009-04-17 현대자동차주식회사 Structure for fixing stiffness bar of vehicle
JP2009275659A (en) * 2008-05-16 2009-11-26 Toyota Motor Corp Muffler
JP2010043572A (en) * 2008-08-11 2010-02-25 Hitachi Constr Mach Co Ltd Exhaust emission control device
JP2010071177A (en) * 2008-09-18 2010-04-02 Yanmar Co Ltd Engine device
JP2010076612A (en) * 2008-09-26 2010-04-08 Kubota Corp Muffler device of traveling vehicle
WO2010047199A1 (en) * 2008-10-20 2010-04-29 ヤンマー株式会社 Engine device for mounting on traveling vehicle
JP2010174666A (en) * 2009-01-27 2010-08-12 Yanmar Co Ltd Exhaust emission control device
EP2333263A1 (en) * 2008-09-18 2011-06-15 Yanmar Co., Ltd. Engine device
KR20130079035A (en) * 2012-01-02 2013-07-10 볼보 컨스트럭션 이큅먼트 에이비 Cover of diesel particulate filter
CN104685174A (en) * 2012-09-28 2015-06-03 洋马株式会社 Engine device
CN105121205A (en) * 2013-03-28 2015-12-02 洋马株式会社 Engine device
JP2016113928A (en) * 2014-12-12 2016-06-23 川崎重工業株式会社 Exhaust muffler
ES2592508R1 (en) * 2015-05-21 2017-04-12 Hitravi S.L. Modification of the exhaust system for the total clearance of the right crossbar in trucks
CN108005769A (en) * 2017-12-12 2018-05-08 吕刚 A kind of good new-energy automobile exhaust apparatus of environment protecting
CN108166557A (en) * 2018-01-29 2018-06-15 芜湖市皖南造船有限公司 One kind is dredged U-shaped shield peculiar to vessel
CN108979821A (en) * 2018-09-07 2018-12-11 爱驰威汽车零部件（盐城）有限公司 A kind of stable type mobile muffler facilitating installation
CN109941208A (en) * 2019-04-25 2019-06-28 张家港润盛科技材料有限公司 A kind of heat-insulated noise reduction aluminium cover of automobile engine
JP2019166889A (en) * 2018-03-22 2019-10-03 株式会社クボタ Paddy work machine

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100893660B1 (en) 2007-12-12 2009-04-17 현대자동차주식회사 Structure for fixing stiffness bar of vehicle
JP2009275659A (en) * 2008-05-16 2009-11-26 Toyota Motor Corp Muffler
JP2010043572A (en) * 2008-08-11 2010-02-25 Hitachi Constr Mach Co Ltd Exhaust emission control device
EP2333263A4 (en) * 2008-09-18 2015-04-22 Yanmar Co Ltd Engine device
JP2010071177A (en) * 2008-09-18 2010-04-02 Yanmar Co Ltd Engine device
EP2333263A1 (en) * 2008-09-18 2011-06-15 Yanmar Co., Ltd. Engine device
US9140154B2 (en) 2008-09-18 2015-09-22 Yanmar Co., Ltd. Engine device
JP2010076612A (en) * 2008-09-26 2010-04-08 Kubota Corp Muffler device of traveling vehicle
WO2010047199A1 (en) * 2008-10-20 2010-04-29 ヤンマー株式会社 Engine device for mounting on traveling vehicle
JP2010096153A (en) * 2008-10-20 2010-04-30 Yanmar Co Ltd Engine device for mounting on traveling vehicle
CN102187066A (en) * 2008-10-20 2011-09-14 洋马株式会社 Engine device for mounting on traveling vehicle
US8752663B2 (en) 2008-10-20 2014-06-17 Yanmar Co., Ltd. Travel vehicle-mounted engine device
JP2010174666A (en) * 2009-01-27 2010-08-12 Yanmar Co Ltd Exhaust emission control device
KR20130079035A (en) * 2012-01-02 2013-07-10 볼보 컨스트럭션 이큅먼트 에이비 Cover of diesel particulate filter
CN104685174A (en) * 2012-09-28 2015-06-03 洋马株式会社 Engine device
US9662969B2 (en) 2013-03-28 2017-05-30 Yanmar Co., Ltd. Engine device
CN105121205A (en) * 2013-03-28 2015-12-02 洋马株式会社 Engine device
EP2979912A4 (en) * 2013-03-28 2016-11-23 Yanmar Co Ltd Engine device
JP2016113928A (en) * 2014-12-12 2016-06-23 川崎重工業株式会社 Exhaust muffler
ES2592508R1 (en) * 2015-05-21 2017-04-12 Hitravi S.L. Modification of the exhaust system for the total clearance of the right crossbar in trucks
CN108005769A (en) * 2017-12-12 2018-05-08 吕刚 A kind of good new-energy automobile exhaust apparatus of environment protecting
CN108005769B (en) * 2017-12-12 2019-11-08 安徽汉采密封件科技有限公司 A kind of new-energy automobile exhaust apparatus that environment protecting is good
CN108166557A (en) * 2018-01-29 2018-06-15 芜湖市皖南造船有限公司 One kind is dredged U-shaped shield peculiar to vessel
JP2019166889A (en) * 2018-03-22 2019-10-03 株式会社クボタ Paddy work machine
JP6991086B2 (en) 2018-03-22 2022-01-12 株式会社クボタ Paddy field work machine
CN108979821A (en) * 2018-09-07 2018-12-11 爱驰威汽车零部件（盐城）有限公司 A kind of stable type mobile muffler facilitating installation
CN108979821B (en) * 2018-09-07 2023-05-30 爱驰威汽车零部件（盐城）有限公司 Stable automobile muffler convenient to install
CN109941208A (en) * 2019-04-25 2019-06-28 张家港润盛科技材料有限公司 A kind of heat-insulated noise reduction aluminium cover of automobile engine

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