JPWO2008136203A1 - Construction machinery - Google Patents

Construction machinery Download PDF

Info

Publication number
JPWO2008136203A1
JPWO2008136203A1 JP2009512891A JP2009512891A JPWO2008136203A1 JP WO2008136203 A1 JPWO2008136203 A1 JP WO2008136203A1 JP 2009512891 A JP2009512891 A JP 2009512891A JP 2009512891 A JP2009512891 A JP 2009512891A JP WO2008136203 A1 JPWO2008136203 A1 JP WO2008136203A1
Authority
JP
Japan
Prior art keywords
post
processing
support
assembly
tank
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
JP2009512891A
Other languages
Japanese (ja)
Inventor
象平 神谷
象平 神谷
中村 和則
和則 中村
荒井 康
康 荒井
Original Assignee
日立建機株式会社
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
Priority to JP2007120738 priority Critical
Priority to JP2007120738 priority
Application filed by 日立建機株式会社 filed Critical 日立建機株式会社
Priority to PCT/JP2008/052785 priority patent/WO2008136203A1/en
Publication of JPWO2008136203A1 publication Critical patent/JPWO2008136203A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08Superstructures; Supports for superstructures
    • E02F9/0858Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/008Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/009Exhaust 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 having two or more separate purifying devices arranged in series
    • F01N13/0097Exhaust 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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1822Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration for fixing exhaust pipes or devices to vehicle body
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/105General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106Auxiliary oxidation catalysts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/06Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/02Adding substances to exhaust gases the substance being ammonia or urea
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066Selective catalytic reduction [SCR]
    • Y02A50/2325

Abstract

The post-processing device (23) is assembled to the support member (19) in a state of being suspended via the vibration isolating member (28), thereby being assembled separately from the upper swing body (4) which is the vehicle body. An aftertreatment device assembly (18) is formed. This post-processing device assembly (18) can be used to easily perform troublesome work by performing assembly work of the vibration isolating member (28), hydraulic piping work, electrical wiring work, etc. in advance in a different place, And it can be done reliably. Then, the assembled post-processing device assembly (18) can be easily attached to the upper swing body (4) by simply mounting the post-processing device assembly (18) on the mounting frames (16, 17) and tightening the bolts (40).

Description

  The present invention relates to a construction machine such as a hydraulic excavator equipped with an aftertreatment device that contains, for example, exhaust gas purification means for removing harmful substances in exhaust gas.

In general, a hydraulic excavator, which is a representative example of a construction machine, is a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and can be raised and raised on the front side of the upper revolving body. And a working device provided. The upper swing body is equipped with an engine for driving a hydraulic pump at the rear of the swing frame, and a cab, a fuel tank, a hydraulic oil tank, and the like are mounted on the front side of the swing frame.
Here, a diesel engine is generally used as an engine of a hydraulic excavator. This diesel engine is supposed to discharge harmful substances such as particulate matter (PM) and nitrogen oxides (NOx). Therefore, the hydraulic excavator is provided with an aftertreatment device in the exhaust pipe of the engine, and an exhaust gas purifying device for removing harmful substances in the exhaust gas is accommodated in the aftertreatment device (for example, a patent) Reference 1: Japanese Patent Application Laid-Open No. 2003-20936).
Further, as an exhaust gas purification device, a diesel particulate filter (DPF) that collects and removes particulate matter (PM) in the exhaust gas, and nitrogen oxide (NOx) is used with an aqueous urea solution. A NOx purification device and the like for purification are known (for example, see Patent Document 2: Japanese Patent Laid-Open No. 2003-120277).
By the way, the exhaust gas purification devices such as the diesel particulate removal device and the NOx purification device described above have a honeycomb-like core in which a large number of through holes are provided in a member made of, for example, a ceramic material or a metal material. For this reason, since the core of the exhaust gas purifying device may be damaged when a large vibration is constantly applied, the post-processing device is attached to the revolving frame side via a vibration isolating member.
Of the exhaust gas purification devices, the diesel particulate removal device is equipped with electrical components such as a temperature sensor for detecting the temperature of the exhaust gas and a differential pressure sensor for detecting the collection state of PM. The NOx purification device is equipped with electrical components such as a temperature sensor that detects whether the urea aqueous solution has a temperature at which ammonia is generated.
Therefore, when the post-processing device according to the prior art is attached to the revolving frame side, it is necessary to assemble a vibration isolating member made up of many parts such as an elastic rubber, a washer and a bolt. Also, installation of various electrical components and harness connection work must be performed. Moreover, around the engine where the aftertreatment device is provided, many parts, piping, wiring, and the like exist as obstacles when the aftertreatment device is attached. For this reason, there exists a problem that workability | operativity when attaching a post-processing apparatus to a turning frame is bad.

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 separately assemble a post-processing device and parts related to the post-processing device in advance, and attach the assembly to the vehicle body. On the other hand, it is to provide a construction machine which can be installed by a simple operation.
(1). A construction machine according to the present invention includes a self-propelled vehicle body, an engine mounted on the vehicle body, and an exhaust gas purification means for removing harmful substances in the exhaust gas connected to an exhaust pipe of the engine. And a stored post-processing device.
In order to solve the above-described problems, the configuration of the present invention adopts a support member made of a member separate from the vehicle body, and the rear member assembled to the support member via a vibration isolation member. A post-processing apparatus assembly is configured by the processing apparatus, and the post-processing apparatus assembly is configured to be attached to the vehicle body using the support member.
By configuring in this way, the post-processing device can perform the work of assembling the vibration-proof member, which requires labor, various wiring, piping work, etc. in advance in another place. It can be easily attached to the vehicle body using a support member. Thereby, assembly work can be facilitated and productivity can be improved.
(2). According to the present invention, the post-processing apparatus assembly can be configured by suspending the post-processing apparatus from the support member via a vibration isolating member.
Thereby, since the post-processing apparatus assembly suspends and supports the post-processing apparatus with respect to the support member via the vibration isolating member, vibration can be effectively suppressed.
(3). Further, according to the present invention, the post-processing device assembly can be configured to be assembled with electrical components related to the exhaust gas purification means.
Thereby, the electrical equipment related to the exhaust gas purification means can be assembled together in the aftertreatment device assembly. Therefore, an electrical component such as a temperature sensor or a differential pressure sensor can be easily assembled to the post-processing apparatus assembly at another place where the work is easy.
(4). Here, in the case of the above (3), a connector can be provided at the tip of the harness extending from the electrical component, and the connector can be attached to the support member.
Accordingly, the harness on the vehicle body side can be easily connected to the connector even after the post-processing device assembly is attached to the vehicle body.
(5). According to the present invention, the support member constituting the post-processing apparatus assembly includes a frame body that is formed as a frame structure and attached to the vehicle body, and the post-processing is provided on the frame body via the vibration isolation member. The device is constituted by a bracket that suspends and supports the device.
Thus, the support member formed as a frame structure is attached to the vehicle body, and the post-processing device assembly is attached to the vehicle body by supporting the post-processing device to the bracket provided on the frame body via the vibration isolating member. Can do. At this time, since the post-processing apparatus is supported by being suspended by the bracket, vibration can be effectively suppressed.
(6). Further, according to the present invention, the support member constituting the post-processing device assembly includes a frame body formed as a frame structure and attached to the vehicle body, and a pair of brackets provided extending downward from the frame body The post-processing device is provided with mounting arms on both sides in the length direction, and the post-processing device is configured to mount each bracket of the support member and the mounting arm via the vibration isolating member. It can be.
As a result, the support member constituting the post-processing apparatus assembly can be constituted by a frame body that is formed as a frame structure and attached to the vehicle body, and a pair of brackets that extend downward from the frame body. . In this case, the post-processing apparatus can attach the mounting arms and the brackets of the support member via the vibration-proofing members by providing the mounting arms on both sides in the length direction.
(7). According to the present invention, the vehicle body is provided with a mounting frame for mounting the post-processing device assembly located in the vicinity of the engine, and the post-processing device assembly fixes the support member to the mounting frame. It is in the structure which attached by doing.
Thus, since the mounting frame is provided in the vicinity of the engine on the vehicle body, the post-processing device assembly is fixed to the mounting frame to fix the post-processing device assembly. Can be easily installed near the engine.
(8). According to the present invention, the aftertreatment device includes a cylindrical tank, an oxidation catalyst and a filter that are provided in the tank and constitute the exhaust gas purification means, and a temperature sensor that detects the temperature in the tank. A harness is provided between the temperature sensor and the support member, and the support member is provided with a differential pressure sensor for detecting a pressure difference before and after the filter in the tank, and between the tank and the differential pressure sensor. There is a configuration in which the gap is connected by a tube.
Therefore, the post-processing device is configured by a cylindrical tank, an oxidation catalyst and a filter provided in the tank, and a temperature sensor for detecting the temperature in the tank, and the temperature sensor and the support member A harness is provided between the tank and the support member. A differential pressure sensor for detecting a pressure difference before and after the filter is provided in the tank, and the tank and the differential pressure sensor are connected by a tube. As a result, a diesel particulate removal device (DPF) that collects and removes particulate matter (PM) in the exhaust gas can be assembled as one of the post-processing device assemblies.
(9). Further, according to the present invention, the aftertreatment device detects a temperature in the cylindrical tank, a urea selective reduction catalyst and an oxidation catalyst provided in the tank and constituting the exhaust gas purification means, and the temperature in the tank. A temperature sensor is provided, and a harness is provided between the temperature sensor and the support member.
Therefore, the aftertreatment device is constituted by a cylindrical tank, a urea selective reduction catalyst and an oxidation catalyst provided in the tank, and a temperature sensor for detecting the temperature in the tank, and the temperature sensor and the support. A harness is provided between the members. As a result, a NOx purification device that purifies nitrogen oxide (NOx) using an aqueous urea solution can be assembled as one of the aftertreatment device assemblies.

FIG. 1 is a front view showing a hydraulic excavator according to a first embodiment of the present invention.
FIG. 2 is a plan view showing the upper swing body and the post-processing apparatus assembly in a state where the cab and the building cover are omitted.
FIG. 3 is an enlarged perspective view of a main part showing a state in which the post-processing device assembly is attached to the attachment frame.
FIG. 4 is an enlarged front view showing the post-processing device assembly.
FIG. 5 is an enlarged plan view showing the post-processing device assembly.
FIG. 6 is an enlarged perspective view showing the post-processing device assembly.
FIG. 7 is an enlarged cross-sectional view of a main part when the vibration-proof member and the like are viewed from the VII-VII direction in FIG.
FIG. 8 is an enlarged front view showing the post-processing device assembly according to the second embodiment.

Hereinafter, as a construction machine according to an embodiment of the present invention, a hydraulic excavator provided with a crawler type lower traveling body will be described as an example, and will be described in detail according to the accompanying drawings.
First, FIG. 1 thru | or FIG. 7 has shown 1st Embodiment of the construction machine based on this invention. In this first embodiment, an oxidation catalyst and a filter are accommodated in the tank of the aftertreatment device, and a diesel particulate removal device (DPF) that collects and removes particulate matter (PM) in the exhaust gas is configured. This will be described as an example.
First, the configuration of the hydraulic excavator 1 as a construction machine used for excavation work of earth and sand will be described.
This hydraulic excavator 1 is a self-propelled crawler-type lower traveling body 2 and is mounted on the lower traveling body 2 through a turning device 3 so as to be capable of turning, and an upper revolving body that forms a vehicle body with the lower traveling body 2. 4 and a work device 5 provided on the front side of the upper swing body 4 so as to be able to move up and down.
Here, the upper swing body 4 is roughly constituted by a swing frame 6, a cab 7, an engine 8, a hydraulic pump 11, a hydraulic oil tank 12, a fuel tank 13, and the like which will be described later. In addition, the upper revolving unit 4 is configured such that a post-processing device assembly 18 which is assembled in advance as a separate member is attached to the right side of the engine 8.
Reference numeral 6 denotes a revolving frame of the upper revolving unit 4, and the revolving frame 6 is attached on the lower traveling unit 2 via the revolving device 3. Further, as shown in FIG. 2, the revolving frame 6 is provided with a thick bottom plate 6A extending in the front and rear directions, and standing on the bottom plate 6A, and extends in the front and rear directions with a predetermined interval in the left and right directions. Left vertical plate 6B, right vertical plate 6C, a plurality of extended beams 6D extending outwardly in the left and right directions from the respective vertical plates 6B and 6C, and each of the extended beams positioned outside in the left and right directions. A left side frame 6E and a right side frame 6F, which are attached to the tip of the beam 6D and extend in the front and rear directions, are roughly configured.
Reference numeral 7 denotes a cab (see FIG. 1) mounted on the left front side of the revolving frame 6. The cab 7 is used by an operator. Inside the cab 7, a driver's seat on which an operator is seated, various operation levers (none of which are shown), and the like are disposed.
Reference numeral 8 denotes an engine that constitutes a power source mounted horizontally on the rear side of the revolving frame 6. The engine 8 is configured as a diesel engine. Further, as shown in FIG. 3, an exhaust pipe 9 for exhaust gas exhaust is provided on the right side of the engine 8, and a post-processing device 23 described later is attached to the downstream side of the exhaust pipe 9. .
Moreover, although the diesel engine 8 is highly efficient and excellent in durability, harmful substances such as particulate matter (PM) are discharged together with the exhaust gas. Therefore, the post-treatment device 23 attached to the exhaust pipe 9 accommodates a diesel particulate removal device (DPF) 27 that collects and removes this PM.
Reference numeral 10 denotes a heat exchanger (see FIG. 2) disposed on the left side of the engine 8. The heat exchanger 10 is configured to arrange, for example, a radiator, an oil cooler, an intercooler, and the like. Reference numeral 11 denotes a hydraulic pump attached to the right side of the engine 8, and the hydraulic pump 11 is driven by the engine 8 to discharge pressure oil (working oil) toward a control valve (not shown). Is.
A hydraulic oil tank 12 is located on the front side of the hydraulic pump 11 and is mounted on the right side of the swing frame 6. The hydraulic oil tank 12 stores hydraulic oil supplied to the hydraulic pump 11. Reference numeral 13 denotes a fuel tank provided on the front side of the hydraulic oil tank 12, and this fuel tank 13 stores fuel supplied to the engine 8 therein.
Reference numeral 14 is a counterweight located on the rear side of the engine 8 and attached to the rear end of the revolving frame 6. The counterweight 14 balances the weight of the work device 5. Reference numeral 15 denotes a building cover that covers the engine 8 and the like.
Reference numerals 16 and 17 denote left and right mounting frames provided on the rear side of the swing frame 6, and the left and right mounting frames 16 and 17 form a part of the upper swing body 4. Here, the mounting frames 16 and 17 are located on the right side (hydraulic pump 11 side) of the engine 8, and are arranged to extend in the front and rear directions with an interval between the left and right sides. The mounting frames 16 and 17 are used as mounting bases for mounting a support member 19 of a post-processing device assembly 18 to be described later.
The left and right mounting frames 16 and 17 are, as shown in FIGS. 2 and 3, vertical columns 16A and 17A located on the rear side and extending upward and downward, and upper portions of the vertical columns 16A and 17A. It is formed in a substantially L shape by horizontal columns 16B and 17B that are bent from the front and extend to the front side. In addition, the mounting frames 16 and 17 are integrally fixed to the right vertical plate 6C and the overhanging beam 6D of the revolving frame 6 using bolting, welding, or other fixing means, for example, at the bottom of the vertical columns 16A and 17A. . On the other hand, the front portions of the horizontal columns 16B and 17B are fixed to structures such as a partition plate (not shown) defining the engine chamber and the hydraulic oil tank 12 by fixing means such as bolting and welding.
Next, the post-processing apparatus assembly 18 according to the first embodiment provided on the right rear side of the upper swing body 4 will be described.
The post-processing device assembly 18 is provided as a separate member from the upper swing body 4 constituting the vehicle body, and can be assembled in advance at a different location. 3 to 7, the post-processing device assembly 18 includes a support member 19, a post-processing device 23, a vibration isolating member 28, harnesses 31 and 33, connectors 32 and 34, a differential pressure sensor 35, and the like which will be described later. It is comprised by.
Reference numeral 19 denotes a support member that forms the base of the post-processing apparatus assembly 18, and the support member 19 is mounted on the left and right mounting frames 16 and 17. Further, the support member 19 collects the post-processing device 23, the vibration isolation member 28, the temperature sensors 29 and 30, the differential pressure sensor 35, and the like constituting the post-processing device assembly 18 as one assembly. The support member 19 includes a support frame 20, a front bracket 21, a rear bracket 22, and the like, which will be described later, as shown in FIGS.
Reference numeral 20 denotes a support frame constituting a frame of the support member 19, and the support frame 20 is attached to the horizontal pillars 16 </ b> A and 17 </ b> A of the left and right attachment frames 16 and 17. Further, as shown in FIGS. 5 and 6, the support frame 20 is formed into a rectangular frame structure by an angle-shaped front frame portion 20A, a rear frame portion 20B, a plate-shaped left frame portion 20C, and a right frame portion 20D. It is configured. In addition, bolt insertion holes 20 </ b> E that are fixed to the mounting frames 16 and 17 are provided at four corners of the support frame 20. Further, a sensor attachment portion 20F for attaching a differential pressure sensor 35 described later is provided at the left rear portion of the support frame 20.
Reference numeral 21 denotes a front bracket provided to extend downward on the front side of the support frame 20, and the upper portion of the front bracket 21 is integrally fixed to the front frame portion 20A constituting the support frame 20 by fixing means such as welding. . The front bracket 21 suspends and supports the post-processing device 23, and the front mounting arm 25 is mounted via a vibration isolation member 28. The front bracket 21 is formed of, for example, a plate body whose lower portion is bent in an L shape toward the front side, and a bolt insertion hole 21A (in FIG. 7) for fixing the vibration isolating member 28 to the flat portion. Are formed).
Reference numeral 22 denotes a rear bracket that extends downward on the rear side of the support frame 20, and an upper portion of the rear bracket 22 is fixed to the rear frame portion 20 </ b> B of the support frame 20. The rear bracket 22 suspends and supports the post-processing device 23, and a rear mounting arm 26 is mounted via a vibration isolation member 28. The rear bracket 22 is formed with substantially the same function as the front bracket 21.
Reference numeral 23 denotes an aftertreatment device that is suspended from the lower side of the support member 19. This post-treatment device 23 contains exhaust gas purification means for removing harmful substances in the exhaust gas, and is connected to the exhaust pipe 9. The post-processing device 23 is roughly constituted by a tank 24, a front mounting arm 25, a rear mounting arm 26, a diesel particulate removing device 27, temperature sensors 29, 30 and the like which will be described later.
Reference numeral 24 denotes a tank constituting the outer shape of the post-processing device 23. The tank 24 is formed as a hollow cylinder extending in the front and rear directions, and an oxidation catalyst 27A and a filter 27B of a diesel particulate removing device 27 described later are accommodated in the tank 24. Further, the tank 24 is formed with a diameter gradually reduced on both sides in the axial direction, and connection flanges 24A and 24B are provided at the ends thereof. Further, the exhaust pipe 9 of the engine 8 is connected to the front connection flange 24A, and a tail pipe 39 (see FIGS. 2 and 3) described later is connected to the rear connection flange 24B. The tank 24 is suspended from the brackets 21 and 22 of the support member 19 in a vibration-proof state via mounting arms 25 and 26 and a vibration-proof member 28 described later.
Reference numeral 25 denotes a front mounting arm attached to the front side in the length direction of the tank 24, and the front mounting arm 25 is formed by a plate body that is bent a plurality of times along the tank 24. Further, the front portion of the front mounting arm 25 is bolted to a connection flange 24 </ b> A provided on the front side of the tank 24. On the other hand, an elastic rubber insertion hole 25A (shown in FIG. 7) into which the elastic rubber 28A of the vibration isolation member 28 is inserted is formed in the rear portion of the front mounting arm 25.
Reference numeral 26 denotes a rear mounting arm attached to the rear side of the tank 24. The rear mounting arm 26 is formed of a plate body bent in an L shape. Further, the rear portion of the rear mounting arm 26 is bolted to a connection flange 24 </ b> B provided on the rear side of the tank 24. On the other hand, an elastic rubber insertion hole (not shown) is formed in the front portion of the rear mounting arm 26.
Reference numeral 27 denotes a diesel particulate filter as an exhaust gas purification means provided in a tank 24 constituting the aftertreatment device 23. The diesel particulate removal device 27 purifies the exhaust gas by collecting particulate matter (PM) in the exhaust gas discharged from the engine 8 and burning and removing (regenerating) the particulate matter. The diesel particulate removal device 27 includes, for example, an oxidation catalyst 27A that is housed on the upstream side in the tank 24 and enhances the oxidizing power of PM, and a filter that is disposed on the downstream side of the oxidation catalyst 27A and collects and regenerates PM. 27B. The oxidation catalyst 27A and the filter 27B have a structure in which a honeycomb structure in which a large number of through holes are provided in a member made of, for example, a ceramic material or a metal material is used, and exhaust gas is circulated through the large number of through holes. Yes.
Reference numerals 28 and 28 denote two vibration isolation members provided between the brackets 21 and 22 of the support member 19 and the mounting arms 25 and 26 of the post-processing device 23, respectively. Of these two anti-vibration members 28, for example, the anti-vibration member 28 provided between the front bracket 21 and the front mounting arm 25 is formed as shown in FIG.
That is, the vibration isolating member 28 is formed in a stepped cylindrical shape by a large diameter portion and a small diameter portion, and the elastic rubber 28A in which the elastic rubber insertion hole 25A of the front mounting arm 25 is inserted into the small diameter portion, and the front mounting arm 25, the other elastic rubber 28B fitted to the small diameter portion of the elastic rubber 28A, the fixed cylinder 28C inserted in the elastic rubber 28A in the axial direction, and the other elastic rubber. A washer 28D sandwiching 28B between the front mounting arm 25, a bolt 28E inserted from the washer 28D side into the bolt insertion hole 21A of the front bracket 21 via the fixed cylinder 28C, and the bolt insertion hole 21A. A nut 28F that fixes the lower end of the bolt 28E is generally configured.
Accordingly, the vibration isolating member 28 elastically connects the front bracket 21 and the front mounting arm 25 to buffer the vibration on the vehicle body side transmitted from the support member 19 side by elastic deformation of the elastic rubbers 28A and 28B. Is.
Reference numeral 29 denotes an upstream temperature sensor as an electrical component that is located on the upstream side of the oxidation catalyst 27 </ b> A of the diesel particulate removing device 27 and provided in the upper part of the tank 24. The upstream temperature sensor 29 detects the temperature of the exhaust gas flowing into the tank 24 in order to confirm whether the oxidation catalyst 27A of the diesel particulate removing device 27 can function.
Reference numeral 30 denotes a downstream temperature sensor as an electrical component that is located on the downstream side of the oxidation catalyst 27 </ b> A of the diesel particulate removing device 27 and provided on the upper portion of the tank 24. The downstream temperature sensor 30 detects the temperature of the exhaust gas that has passed through the oxidation catalyst 27A in order to confirm whether regeneration by the filter 27B of the diesel particulate removing device 27 is possible.
A harness 31 extends from the upstream temperature sensor 29, and a connector 32 is provided on the distal end side of the harness 31. Reference numeral 33 denotes a harness extending from the downstream temperature sensor 30, and a connector 34 is provided on the distal end side of the harness 33. Here, the connectors 32 and 34 are collectively attached to the left frame portion 20 </ b> C of the support frame 20 constituting the support member 19.
Reference numeral 35 denotes a differential pressure sensor attached to the sensor attachment portion 20F of the support frame 20 constituting the support member 19. The differential pressure sensor 35 detects the amount of PM collected by the filter 27B of the diesel particulate removing device 27. In this case, two tubes 35A and 35B are connected to the differential pressure sensor 35, and the tip of one tube 35A is connected to the tank 24 of the post-processing device 23 so as to guide the pressure on the upstream side of the filter 27B. ing. The tip of the other tube 35B is connected to the tank 24 of the post-processing device 23 so as to guide the pressure on the downstream side of the filter 27B.
Thereby, the differential pressure sensor 35 can detect the difference between the pressure on the front side (upstream side) and the pressure on the rear side (downstream side) of the filter 27 </ b> B accommodated in the tank 24. When the pressure difference detected by the differential pressure sensor 35 increases, a large amount of PM is collected by the filter 27B.
Reference numerals 36, 37, and 38 denote three sets of harnesses (see FIG. 3) provided on the upper swing body 4 side. The harnesses 36, 37, and 38 are controllers (not shown) provided on the upper swing body 4 side. )It is connected to the. Of the harnesses 36, 37 and 38, the harness 36 is connected to the connector 32 of the upstream temperature sensor 29, the harness 37 is connected to the connector 34 of the downstream temperature sensor 30, and the harness 38 has a differential pressure. The sensor 35 is connected.
Here, the work for connecting the harnesses 36, 37, 38 on the upper swing body 4 side will be described. The connectors 32, 34 and the differential pressure sensor 35 to be connected are concentrated on the left frame portion 20C side of the support frame 20. Are arranged. Accordingly, the harnesses 36, 37, and 38 can be easily connected to the connectors 32 and 34 and the differential pressure sensor 35 even after the post-processing device assembly 18 is attached to the attachment frames 16 and 17.
Reference numeral 39 denotes a tail pipe (see FIG. 3 and the like) bolted to the connection flange 24B of the tank 24. The tail pipe 39 constitutes a part of the exhaust pipe 9 that exhausts exhaust gas to the outside of the building cover 15.
The hydraulic excavator 1 according to the first embodiment has the above-described configuration. Next, the assembly work will be described.
First, when assembling the upper swing body 4 in the main assembly line, the cab 7, the engine 8, the heat exchanger 10, the hydraulic pump 11, the hydraulic oil tank 12, the fuel tank 13 and the like are assembled on the swing frame 6. These are subjected to hydraulic piping work and electrical wiring work. On the other hand, the post-processing device assembly 18 is pre-assembled in a place different from the main assembly line.
Here, in the assembling work of the post-processing device assembly 18, the diesel particulate removing device 27 is accommodated in the tank 24, the mounting arms 25 and 26, and the temperature sensors 29 and 30 are mounted and the post-processing device 23 is assembled. Next, the attachment arms 25 and 26 of the post-processing device 23 are attached to the brackets 21 and 22 of the support member 19 in a vibration-proof state via the vibration-proof members 28 and 28. Further, the connector 32 of the upstream temperature sensor 29 and the connector 34 of the downstream temperature sensor 30 are attached together on the front side of the left frame portion 20 </ b> C of the support frame 20. Further, the differential pressure sensor 35 is attached to the sensor attachment portion 20F of the support frame 20, and the tubes 35A and 35B are connected to the tank 24.
As a result, the post-processing device assembly 18 can be assembled (pre-assembled) at a place where it is easy to perform work different from the main assembly line. Then, the assembled post-processing device assembly 18 places the support frame 20 of the support member 19 on the horizontal columns 16B and 17B of the mounting frames 16 and 17 on the revolving frame 6 side. In this state, the bolts 40 are respectively inserted into the bolt insertion holes 20E at the four corners of the support frame 20, and the bolts 40 are fastened to the horizontal columns 16B and 17B, whereby the post-processing device assembly 18 is attached to the mounting frames 16, 17 integrally fixed. Thereby, the post-processing device 23 is attached in a state of being suspended from the support frame 20.
When the post-processing device assembly 18 is attached to the attachment frames 16 and 17, the harness 36 extending from the controller is connected to the connector 32 of the upstream temperature sensor 29, and the harness 37 is connected to the connector 34 of the downstream temperature sensor 30. Then, the harness 38 is connected to the differential pressure sensor 35. At this time, since the connectors 32 and 34 and the differential pressure sensor 35 are concentrated on the left frame 20C side of the support frame 20, the harnesses 36, 37, 38 can be easily connected to the connectors 32 and 34 and the differential pressure sensor 35.
The hydraulic excavator 1 according to the first embodiment has the above-described configuration. Next, the operation thereof will be described.
First, the operator gets on the cab 7 of the upper swing body 4, starts the engine 8, and drives the hydraulic pump 11. Thereby, the pressure oil from the hydraulic pump 11 is supplied to various actuators via the control valve. And when the operator who boarded the cab 7 operated the operation lever (not shown) for driving | running | working, the lower traveling body 2 can be moved forward or backward. On the other hand, by operating an operation lever (not shown) for work, the work device 5 can be moved up and down to perform soil excavation work or the like.
Further, when the engine 8 is operated, particulate matter (PM), which is a harmful substance, is discharged from the exhaust pipe 9. At this time, the diesel particulate removal device 27 collects particulate matter (PM) oxidized by the oxidation catalyst 27A by the filter 27B, and burns and removes (regenerates) the collected PM. Thereby, the purified exhaust gas can be discharged from the tail tube 39 to the outside.
Further, when the hydraulic excavator 1 is operated, vibrations are generated in various directions during operation and traveling. The vibrations can be buffered by the vibration isolation members 28, and vibrations of the post-processing device 23 can be prevented.
Thus, according to the first embodiment, the post-processing device assembly 18 is assembled by pre-assembling the support member 19, the post-processing device 23, the vibration isolation member 28, and the like that are provided separately from the upper swing body 4. It can be assembled alone. Thus, troublesome work can be easily and reliably performed by performing the work of assembling the vibration-proof member 28, which requires labor, the hydraulic piping work, the electrical wiring work, etc. in advance in a wide place. Then, the assembled post-processing device assembly 18 can be attached to the attachment frames 16 and 17 on the upper swing body 4 side using bolts 40.
As a result, when the post-processing device 23 is mounted on the upper swing body 4 side, it can be easily mounted by simply tightening the bolts 40 on the mounting frames 16 and 17. Thereby, assembly work can be facilitated and productivity can be improved.
Further, temperature sensors 29 and 30 and a differential pressure sensor 35 can be assembled in the post-processing device assembly 18 as electrical components related to the diesel particulate removing device 27. Therefore, the temperature sensors 29 and 30 and the differential pressure sensor 35 can be easily assembled to the post-processing device assembly 18 at another place where the work is easy.
On the other hand, connectors 32, 34 are provided at the tips of the harnesses 31, 33 extending from the temperature sensors 29, 30, and the connectors 32, 34 are attached to the support frame 20 of the support member 19. Thus, even after the post-processing device assembly 18 is mounted on the mounting frames 16 and 17, the harnesses 36 and 37 on the upper swing body 4 side can be easily connected to the connectors 32 and 34, thereby improving workability. Can be improved.
Further, the support member 19 of the post-processing device assembly 18 is connected to the mounting arms 25 and 26 of the post-processing device 23 via the vibration isolating members 28 by the brackets 21 and 22, so that the post-processing device 23 is held in both ends. Suspended and supported. As described above, the post-processing apparatus assembly 18 can effectively suppress vibration of the post-processing apparatus 23 by the suspension structure, and can be expected to improve the vibration isolation performance by the vibration isolation member 28.
Further, the post-treatment device 23 is provided with a diesel particulate removal device 27 as an exhaust gas purification means, and the oxidation catalyst 27A and the filter 27B are accommodated in the tank 24. Particulate matter (PM) can be collected and removed.
Next, FIG. 8 shows a second embodiment of the construction machine according to the present invention. The feature of the second embodiment is that the post-processing device includes a cylindrical tank, a urea selective reduction catalyst and an oxidation catalyst that are provided in the tank and constitute exhaust gas purification means, and a temperature in the tank is detected. That is, the temperature sensor and a harness provided between the temperature sensor and the support member are included. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
41 is a post-processing apparatus assembly according to the second embodiment provided on the right rear side of the upper swing body 4, and 42 is a post-processing apparatus according to the second embodiment constituting the post-processing apparatus assembly 41. Each is shown. Here, the post-treatment device 42 accommodates a NOx purification device 44 (to be described later) that purifies harmful substances in exhaust gas, particularly nitrogen oxides (NOx), using a urea aqueous solution. The post-processing device 42 is roughly constituted by a tank 43, a NOx purification device 44, a temperature sensor 45, and the like which will be described later.
43 is a tank of the post-processing device 42. The tank 43 is formed as a hollow cylindrical body, almost like the tank 24 according to the first embodiment, and connection flanges 43A and 43B are provided at both ends. Yes. However, the tank 43 according to the second embodiment is different from the tank 24 according to the first embodiment in that an injection valve mounting cylinder 43C is provided on the upstream side. Here, the injection valve mounting cylinder 43 </ b> C is for mounting a urea injection valve 48 (described later) for injecting a urea aqueous solution into the tank 43.
Reference numeral 44 denotes a NOx purification device as an exhaust gas purification means provided in the tank 43. The NOx purification device 44 purifies nitrogen oxides (NOx) in the exhaust gas using a urea aqueous solution. The NOx purification device 44 includes, for example, a urea selective reduction catalyst 44A accommodated on the upstream side in the tank 43, an oxidation catalyst 44B disposed on the downstream side of the urea selective reduction catalyst 44A, and a urea injection valve 48. It is roughly structured.
Here, the urea selective reduction catalyst 44A causes NOx in the exhaust gas to undergo a reduction reaction with ammonia generated from the urea aqueous solution, and decomposes into water and nitrogen. Further, the oxidation catalyst 44B is for reducing ammonia in the exhaust gas.
Reference numeral 45 denotes a temperature sensor as an electrical component that is located on the upstream side of the urea selective reduction catalyst 44 </ b> A of the NOx purification device 44 and is provided in the upper part of the tank 43. This temperature sensor 45 detects the temperature of the exhaust gas flowing into the tank 43 in order to confirm whether the urea selective reduction catalyst 44A can function. Reference numeral 46 denotes a harness extending from the temperature sensor 45. A connector 47 is provided on the distal end side of the harness 45, and the connector 47 is attached to the left frame portion 20C of the support frame 20.
Reference numeral 48 denotes a urea injection valve provided in the injection valve mounting cylinder 43C of the tank 43. The urea injection valve 48 has a joint 48A connected to a urea aqueous solution tank (both not shown) via a supply pump. . The urea injection valve 48 injects the urea aqueous solution toward the exhaust gas flowing into the tank 43. Furthermore, the urea injection valve 48 adjusts the injection amount of the urea aqueous solution in accordance with conditions such as the flow rate, temperature, and components of the exhaust gas, and is connected to the controller via a valve control signal output wiring (not shown). (Not shown).
Thus, also in the second embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. In particular, in the second embodiment, the post-treatment device 42 is provided with a NOx purification device 44 as exhaust gas purification means, and the urea selective reduction catalyst 44A and the oxidation catalyst 44B are accommodated in the tank 43. The NOx purification device 44 can decompose and purify nitrogen oxide (NOx) in the exhaust gas into water and nitrogen by a reduction reaction.
The first embodiment exemplifies a case where the diesel particulate removal device 27 is provided in the tank 24 as exhaust gas purification means. In the second embodiment, the NOx purification device 44 is used as exhaust gas purification means. The case where it is set as the structure which provides in the tank 43 is illustrated. However, the present invention is not limited to this. For example, another exhaust gas purification means such as a three-way catalyst may be housed in the tank.
Further, in the first embodiment, the case where the post-processing device assembly 18 is disposed so that the tank 24 of the post-processing device 23 extends in the front and rear directions of the revolving frame 6 is illustrated. However, the present invention is not limited to this, and the post-processing device assembly 18 may be arranged such that the tank 24 of the post-processing device 23 extends in the left and right directions of the revolving frame 6. This configuration can be similarly applied to the second embodiment.
On the other hand, in the first embodiment, the support frame 20 of the support member 19 is configured to be attached to the attachment frames 16 and 17 by the bolts 40 inserted into the bolt insertion holes 20E provided at the four corners. However, the present invention is not limited to this. For example, the bolt insertion hole 20E may be abolished, a bolt may be welded to the support frame 20, and the weld bolt may be attached to the attachment frames 16 and 17 using nuts. Further, the support frame 20 may be directly welded to the mounting frames 16 and 17. These configurations can be similarly applied to the second embodiment.
Further, in the first embodiment, the support frame 20 of the support member 19 forming the frame is rectangular in shape by four members including the front frame portion 20A, the rear frame portion 20B, the left frame portion 20C, and the right frame portion 20D. The case where it comprises as a frame structure is illustrated. However, the present invention is not limited to this, and may be a covered frame having a lid or a bottomed frame having a bottom, for example. Other shapes such as an H-shaped or I-shaped frame as viewed from above can also be applied. These configurations can be similarly applied to the second embodiment.
Furthermore, in each embodiment, the hydraulic excavator 1 provided with the crawler type lower traveling body 2 was described as an example of the construction machine. However, the present invention is not limited to this, and may be applied to a hydraulic excavator provided with a wheel type lower traveling body made of, for example, a tire or the like. In addition, it can be widely applied to other construction machines such as a lift truck, a dump truck, a hydraulic crane, etc. equipped with a diesel engine.

Claims (9)

  1. A self-propelled vehicle body (4), an engine (8) mounted on the vehicle body (4), and an exhaust pipe (9) of the engine (8) are connected to remove harmful substances in the exhaust gas inside. In a construction machine comprising an aftertreatment device (23, 42) in which exhaust gas purification means (27, 44) for accommodating
    A support member (19) which is a separate member from the vehicle body (4), and the post-processing device (23, 42) assembled to the support member (19) via a vibration isolating member (28). Constituting the aftertreatment device assembly (18, 41),
    A construction machine characterized in that the post-processing device assembly (18, 41) is attached to the vehicle body (4) using the support member (19).
  2.   The post-processing device assembly (18, 41) is configured by suspending the post-processing device (23, 42) from the support member (19) via a vibration isolating member (28). Item 2. The construction machine according to Item 1.
  3.   The electric equipment (29, 30, 35, 45) related to the exhaust gas purification means (27, 44) is assembled to the post-processing device assembly (18, 41). Construction machinery.
  4.   Connectors (32, 34, 47) are provided at the tips of the harnesses (31, 33, 46) extending from the electrical components (29, 30, 35, 45), and the connectors (32, 34, 47) are connected to the support members. The construction machine according to claim 3, wherein the construction machine is attached to (19).
  5.   The support member (19) constituting the post-processing device assembly (18, 41) includes a frame body (20) formed as a frame structure and attached to the vehicle body (4), and the frame body (20). The construction machine according to claim 1, comprising a bracket (21, 22) which is provided and suspends and supports the post-processing device (23, 42) via the vibration isolating member (28).
  6. The support member (19) constituting the post-processing device assembly (18, 41) includes a frame body (20) formed as a frame structure and attached to the vehicle body (4), and the frame body (20). It is composed of a pair of brackets (21, 22) provided extending downward,
    The post-processing devices (23, 42) are provided with mounting arms (25, 26) on both sides in the length direction,
    The post-processing device (23, 42) is configured to attach the brackets (21, 22) and the attachment arms (25, 26) of the support member (19) via the vibration isolation member (28). The construction machine according to claim 1.
  7. The vehicle body (4) is provided with a mounting frame (16, 17) for mounting the post-processing device assembly (18, 41) in the vicinity of the engine (8),
    The construction machine according to claim 1, wherein the post-processing device assembly (18, 41) is attached by fixing the support member (19) to the attachment frame (16, 17).
  8. The post-treatment device (23) includes a cylindrical tank (24), an oxidation catalyst (27A) and a filter (27B) provided in the tank (24) and constituting the exhaust gas purification means (27), A temperature sensor (29, 30) for detecting the temperature in the tank (24),
    A harness (31, 33) is provided between the temperature sensor (29, 30) and the support member (19), and the support member (19) is disposed in front of the filter (27B) in the tank (24). The differential pressure sensor (35) for detecting a subsequent pressure difference is provided, and the tank (24) and the differential pressure sensor (35) are connected by a tube (35A, 35B). Construction machinery.
  9. The post-treatment device (42) includes a cylindrical tank (43), a urea selective reduction catalyst (44A) and an oxidation catalyst (44B) provided in the tank (43) and constituting the exhaust gas purification means (44). And a temperature sensor (45) for detecting the temperature in the tank (43),
    The construction machine according to claim 1, wherein a harness (46) is provided between the temperature sensor (45) and the support member (19).
JP2009512891A 2007-05-01 2008-02-13 Construction machinery Pending JPWO2008136203A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007120738 2007-05-01
JP2007120738 2007-05-01
PCT/JP2008/052785 WO2008136203A1 (en) 2007-05-01 2008-02-13 Construction machine

Publications (1)

Publication Number Publication Date
JPWO2008136203A1 true JPWO2008136203A1 (en) 2010-07-29

Family

ID=39943323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009512891A Pending JPWO2008136203A1 (en) 2007-05-01 2008-02-13 Construction machinery

Country Status (2)

Country Link
JP (1) JPWO2008136203A1 (en)
WO (1) WO2008136203A1 (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5107822B2 (en) 2008-08-11 2012-12-26 日立建機株式会社 Exhaust gas purification device
JP5324952B2 (en) * 2009-02-10 2013-10-23 ヤンマー株式会社 Engine equipment
WO2010092857A1 (en) * 2009-02-10 2010-08-19 ヤンマー株式会社 Engine device
JP5328024B2 (en) * 2009-02-12 2013-10-30 ヤンマー株式会社 Engine
JP5328023B2 (en) * 2009-02-12 2013-10-30 ヤンマー株式会社 Engine
JP5519261B2 (en) * 2009-12-18 2014-06-11 ヤンマー株式会社 Engine equipment
JP5748263B2 (en) * 2011-01-11 2015-07-15 ヤンマー株式会社 Exhaust gas purification device
JP5369124B2 (en) * 2011-01-21 2013-12-18 株式会社小松製作所 Bulldozer
JP5774914B2 (en) * 2011-06-10 2015-09-09 株式会社クボタ Harvesting machine
JP5442672B2 (en) * 2011-06-21 2014-03-12 日立建機株式会社 Construction machinery
JP5508351B2 (en) * 2011-06-30 2014-05-28 日立建機株式会社 Work machine
JP5909098B2 (en) * 2012-01-19 2016-04-26 ヤンマー株式会社 Exhaust gas purification device
WO2013108667A1 (en) * 2012-01-19 2013-07-25 ヤンマー株式会社 Exhaust gas purifier
JP5872301B2 (en) * 2012-01-19 2016-03-01 ヤンマー株式会社 Exhaust gas purification device
JP2014033634A (en) * 2012-08-08 2014-02-24 Yanmar Co Ltd Engine apparatus for mounting work machine
KR102040352B1 (en) * 2012-08-08 2019-11-04 얀마 가부시키가이샤 Engine device for mounting on working machine
JP5972111B2 (en) * 2012-08-30 2016-08-17 ヤンマー株式会社 Engine equipment for work equipment
JP5883750B2 (en) * 2012-09-18 2016-03-15 株式会社クボタ Diesel engine exhaust treatment equipment
KR20200008060A (en) 2013-03-28 2020-01-22 얀마 가부시키가이샤 Engine device
JP5658310B2 (en) * 2013-05-27 2015-01-21 ヤンマー株式会社 Engine device for work vehicle
JP2015052274A (en) * 2013-09-05 2015-03-19 ヤンマー株式会社 Engine device for mounting on work machine
DE102013219640A1 (en) 2013-09-27 2015-04-02 Eberspächer Exhaust Technology GmbH & Co. KG Exhaust gas treatment device
JP6087778B2 (en) * 2013-09-30 2017-03-01 株式会社クボタ diesel engine
EP2853704B1 (en) 2013-09-30 2017-04-26 Kubota Corporation Diesel engine
JP2015105551A (en) * 2013-12-02 2015-06-08 日立建機株式会社 Construction machine
JP5895931B2 (en) * 2013-12-27 2016-03-30 コベルコ建機株式会社 Construction machinery
JP2015148182A (en) * 2014-02-06 2015-08-20 日立建機株式会社 Construction machine
JP5898714B2 (en) * 2014-03-07 2016-04-06 ヤンマー株式会社 Engine equipment
FR3018744B1 (en) * 2014-03-24 2016-04-01 Peugeot Citroen Automobiles Sa Delegation system for motor vehicle
DE112014000107B3 (en) * 2014-08-08 2015-12-31 Komatsu Ltd. hydraulic excavators
JP6490384B2 (en) * 2014-10-15 2019-03-27 ヤンマー株式会社 Work vehicle
JP6181631B2 (en) * 2014-11-27 2017-08-16 ヤンマー株式会社 Engine device for work vehicle
JP6567941B2 (en) 2015-10-06 2019-08-28 日立建機株式会社 Construction machinery
JP6411411B2 (en) * 2016-07-04 2018-10-24 ヤンマー株式会社 Work vehicle
JP6409902B2 (en) * 2017-04-28 2018-10-24 井関農機株式会社 Combine
JP6625159B2 (en) * 2018-04-27 2019-12-25 株式会社クボタ Harvester

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6172815A (en) * 1984-09-19 1986-04-14 Chukei Hara Device and method for purifying waste gas from internal-combustion engine
JPH0663818U (en) * 1993-02-22 1994-09-09 日産ディーゼル工業株式会社 Exhaust gas purification device mounting structure for vehicles
JP4353497B2 (en) * 2001-07-05 2009-10-28 日産ディーゼル工業株式会社 Regenerative diesel particulate filter mounting structure
WO2006003713A1 (en) * 2004-07-06 2006-01-12 Hino Motors, Ltd. Mounting structure of particulate filter
JP2006274821A (en) * 2005-03-28 2006-10-12 Nissan Motor Co Ltd Exhaust device of internal combustion engine
JP4661452B2 (en) * 2005-08-19 2011-03-30 いすゞ自動車株式会社 Exhaust gas purification system control method and exhaust gas purification system

Also Published As

Publication number Publication date
WO2008136203A1 (en) 2008-11-13

Similar Documents

Publication Publication Date Title
KR101720599B1 (en) Hydraulic shovel
US9316136B2 (en) Engine unit and work vehicle
EP2320045B1 (en) Exhaust gas treatment apparatus
JP5148714B2 (en) Exhaust gas treatment equipment
EP2754580B1 (en) Dumptruck
EP2194194B1 (en) Construction machine
JP5474155B1 (en) Exhaust treatment unit and method of attaching and removing exhaust treatment unit
EP2314835B1 (en) Exhaust gas purifying device
JP5133422B2 (en) Exhaust gas treatment equipment
US7717205B2 (en) Engine hood assembly enclosure with exhaust aftertreatment device integrated therein, and machine using same
CN102159805B (en) Exhaust gas purifying device
CN103649422B (en) Work machine
KR101570769B1 (en) Hydraulic shovel
EP2933453B1 (en) Engine device
JP4905837B2 (en) Undercarriage of the vehicle
US9222383B2 (en) Working vehicle including exhaust gas treatment device
CN103946503B (en) Hydraulic shovel
JP5324952B2 (en) Engine equipment
US9140154B2 (en) Engine device
WO2010047199A1 (en) Engine device for mounting on traveling vehicle
JP5630216B2 (en) Construction machinery
CN104254674B (en) The working truck of exhaust treatment unit and lift-launch exhaust treatment unit
WO2011129030A1 (en) Apparatus for purifying exhaust gas
US20090121521A1 (en) Frame Structure for Working Vehicle
US8979125B2 (en) Construction machine

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120214

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120619