WO2011152306A1 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- WO2011152306A1 WO2011152306A1 PCT/JP2011/062202 JP2011062202W WO2011152306A1 WO 2011152306 A1 WO2011152306 A1 WO 2011152306A1 JP 2011062202 W JP2011062202 W JP 2011062202W WO 2011152306 A1 WO2011152306 A1 WO 2011152306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- processing device
- treatment device
- engine
- work vehicle
- Prior art date
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Classifications
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- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
-
- 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
-
- 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
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- 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
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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- 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
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a work vehicle.
- the exhaust gas treatment device is, for example, a device that reduces nitrogen oxide (NOx), a device that reduces carbon monoxide (CO), or a device that reduces particulate matter.
- the exhaust gas processing device is connected to the engine via a pipe in order to process exhaust gas from the engine. For this reason, the exhaust gas treatment device is housed inside the work vehicle together with the engine.
- some work vehicles are equipped with a plurality of exhaust gas treatment devices. In the work vehicle disclosed in Patent Document 1, two exhaust gas treatment devices and an engine are connected in series.
- the exhaust gas treatment device is disposed in a recess formed in the counterweight.
- An engine hood is provided so as to cover the exhaust gas treatment device together with the engine.
- An object of the present invention is to suppress an increase in the size of a vehicle body in a work vehicle equipped with a plurality of exhaust gas treatment devices.
- a work vehicle includes an engine, a hydraulic pump, a work machine, a first exhaust gas treatment device, and a second exhaust gas treatment device.
- the hydraulic pump is arranged alongside the engine.
- the hydraulic pump is disposed at a position lower than the upper surface of the engine.
- the hydraulic pump is driven by a driving force from the engine.
- the work machine is driven by hydraulic oil from a hydraulic pump.
- the first exhaust gas processing device processes exhaust gas from the engine.
- the second exhaust gas processing device is disposed above the hydraulic pump and processes exhaust gas from the engine.
- the first exhaust gas processing device is disposed closer to the engine than the second exhaust gas processing device and above the second exhaust gas processing device.
- the first exhaust gas processing device is disposed so as to partially overlap the second exhaust gas processing device in a top view.
- the work vehicle according to the second aspect of the present invention is the work vehicle according to the first aspect, and further includes a connection pipe.
- One end of the connection pipe is connected to the side surface of the first exhaust gas processing device.
- the connection pipe passes above the second exhaust gas treatment device.
- the other end of the connection pipe is connected to the upper part of the second exhaust gas processing device.
- the work vehicle according to a third aspect of the present invention is the work vehicle according to the second aspect, wherein the connection pipe is directly above the second exhaust gas treatment device and from the upper surface of the first exhaust gas treatment device. Is also disposed in a space located below.
- a work vehicle is the work vehicle according to the first aspect, and further includes a first connection pipe, a second connection pipe, and an exhaust pipe.
- One end of the first connection pipe is connected to the engine.
- the other end of the first connection pipe is connected to one side surface of the first exhaust gas processing device.
- One end of the second connection pipe is connected to the other side surface of the first exhaust gas processing device.
- the second connection pipe passes above the second exhaust gas processing device.
- the other end of the second connection pipe is connected to an upper portion on one end side in the axial direction of the second exhaust gas processing device.
- the exhaust pipe is connected to the upper part on the other end side in the axial direction of the second exhaust gas processing device.
- a work vehicle is the work vehicle according to the fourth aspect, wherein the first exhaust gas treatment device and the second exhaust gas treatment device are arranged so as to be offset from each other in the axial direction. ing.
- the second connection pipe and the exhaust pipe are arranged side by side in the axial direction above the second exhaust gas processing device.
- the work vehicle according to the sixth aspect of the present invention is the work vehicle according to the first aspect, and further includes a connection pipe.
- One end of the connection pipe is connected to the lower part of the first exhaust gas treatment device.
- the connection pipe passes below the first exhaust gas treatment device.
- the other end of the connection pipe is connected to the side surface of the second exhaust gas processing device.
- a work vehicle according to a seventh aspect of the present invention is the work vehicle according to the sixth aspect, wherein the connection pipe is directly under the first exhaust gas treatment device and from the lower surface of the second exhaust gas treatment device. Is also disposed in a space located above.
- a work vehicle is the work vehicle according to the first aspect, and further includes a body frame and a connection frame.
- the body frame is disposed around the engine and the hydraulic pump.
- the connection frame connects the first exhaust gas processing device and the second exhaust gas processing device.
- the first exhaust gas processing device, the second exhaust gas processing device, and the connecting frame constitute an exhaust gas processing unit.
- the exhaust gas processing unit is attached to the vehicle body frame by fixing the connecting frame to the vehicle body frame.
- a work vehicle according to a ninth aspect of the present invention is the work vehicle according to the eighth aspect, wherein the connection frame is fixed to the vehicle body frame via a vibration absorbing member made of an elastic body.
- a work vehicle according to a tenth aspect of the present invention is the work vehicle according to any one of the first to ninth aspects, and the first exhaust gas treatment device is a diesel particulate filter type treatment device. .
- the second exhaust gas treatment device is a selective reduction catalyst type treatment device.
- a work vehicle according to an eleventh aspect of the present invention is the work vehicle according to any one of the first to ninth aspects, and the first exhaust gas treatment device is a selective reduction catalyst type treatment device.
- the second exhaust gas treatment device is a diesel particulate filter type treatment device.
- the first exhaust gas processing device and the second exhaust gas processing device are arranged close to each other. For this reason, the installation space of the 1st exhaust gas processing apparatus and the 2nd exhaust gas processing apparatus can be made small. Thereby, even if two exhaust gas processing apparatuses are mounted, it is possible to suppress an increase in the size of the vehicle body of the work vehicle.
- the length of the connection pipe can be secured long. . Therefore, compared to the case where the length of the connection pipe is short, the connection pipe having a bent shape can be easily manufactured.
- the first exhaust gas treatment device, the second exhaust gas treatment device, and the connection pipe can be arranged in a compact manner.
- a long path length between the first connection pipe and the second connection pipe is ensured, and the first exhaust gas processing device, the second exhaust gas processing device, and the first The connection pipe, the second connection pipe, and the exhaust pipe can be arranged in a compact manner.
- the first exhaust gas treatment device and the second exhaust gas treatment device are arranged so as to be offset from each other in the axial direction, whereby the second connection pipe is Above the two exhaust gas processing apparatuses, they are arranged side by side with the exhaust pipe, avoiding the exhaust pipe. Thereby, a 2nd connection piping and an exhaust pipe can be arrange
- the length of the connection pipe can be secured long. . Therefore, compared to the case where the length of the connection pipe is short, the connection pipe having a bent shape can be easily manufactured.
- the first exhaust gas treatment device, the second exhaust gas treatment device, and the connection pipe can be arranged in a compact manner.
- the first exhaust gas processing device, the second exhaust gas processing device, and the connecting frame constitute an exhaust gas processing unit. Easy to remove.
- connection frame is fixed to the vehicle body frame via the vibration absorbing member, the vibration of the exhaust gas treatment unit is suppressed by the vibration absorbing member.
- the first exhaust gas treatment device is a diesel particulate filter type treatment device that requires higher maintenance than the selective reduction catalyst type treatment device, the first exhaust gas treatment device can be easily taken out. Therefore, maintainability can be improved.
- the second exhaust gas treatment device is removed from the connection frame and taken out from the vehicle body in the horizontal direction or downward. be able to. Since the second exhaust gas treatment device is a diesel particulate filter type treatment device that requires higher maintenance than the selective reduction catalyst type treatment device, the second exhaust gas treatment device can be easily taken out. Therefore, maintainability can be improved.
- FIG. 1 is a perspective view of a work vehicle according to an embodiment of the present invention.
- the top view which shows a part of apparatus shown in FIG. The perspective view of an exhaust gas processing unit.
- the figure which looked at the 1st processing device and the 2nd processing device concerning other embodiments from the lower part.
- FIG. 1 shows a work vehicle 100 according to an embodiment of the present invention.
- the work vehicle 100 is a hydraulic excavator and includes a vehicle main body 1 and a work implement 4.
- the vehicle body 1 has a traveling body 2 and a revolving body 3.
- the traveling body 2 includes a pair of traveling devices 2a and 2b.
- Each traveling device 2a, 2b has crawler belts 2d, 2e.
- the traveling devices 2a and 2b cause the work vehicle 100 to travel by driving the crawler belts 2d and 2e with driving force from an engine 21 (see FIG. 2) described later.
- the front-rear direction means the front-rear direction of the vehicle body 1.
- the left-right direction or the side means the vehicle width direction of the vehicle body 1.
- the turning body 3 is placed on the traveling body 2.
- the swivel body 3 is provided so as to be turnable with respect to the traveling body 2.
- a cab 5 is provided at the front left side position of the revolving structure 3.
- the revolving unit 3 includes a fuel tank 14, a hydraulic oil tank 15, an engine chamber 16, and a counterweight 18.
- the fuel tank 14 stores fuel for driving an engine 21 described later.
- the fuel tank 14 is disposed in front of the hydraulic oil tank 15.
- the hydraulic oil tank 15 stores hydraulic oil discharged from a hydraulic pump 23 (see FIG. 2) described later.
- the hydraulic oil tank 15 is arranged side by side with the fuel tank 14 in the front-rear direction.
- the engine chamber 16 houses devices such as the engine 21 and the hydraulic pump 23 as will be described later.
- the engine compartment 16 is disposed behind the cab 5, the fuel tank 14, and the hydraulic oil tank 15. An upper portion of the engine chamber 16 is covered with an engine hood 17.
- the engine hood 17 is attached to the vehicle body so that the engine compartment 16 can be opened and closed.
- a hole is formed in the engine hood 17, and a terminal portion 19 attached to an exhaust pipe 34 (see FIG. 2) described later protrudes upward through the hole.
- the counterweight 18 is disposed behind the engine chamber 16.
- the work machine 4 is attached to the front center position of the revolving structure 3 and includes a boom 7, an arm 8, a bucket 9, a boom cylinder 10, an arm cylinder 11, and a bucket cylinder 12.
- a base end portion of the boom 7 is rotatably connected to the swing body 3. Further, the distal end portion of the boom 7 is rotatably connected to the proximal end portion of the arm 8.
- the tip of the arm 8 is rotatably connected to the bucket 9.
- the boom cylinder 10, the arm cylinder 11, and the bucket cylinder 12 are hydraulic cylinders that are driven by hydraulic oil discharged from a hydraulic pump 23 described later.
- the boom cylinder 10 operates the boom 7.
- the arm cylinder 11 operates the arm 8.
- the bucket cylinder 12 operates the bucket 9.
- the work machine 4 is driven by driving these cylinders 10, 11, and 12.
- the internal structure of the engine room 16 is shown in FIG.
- the engine compartment 16 is provided with a body frame 20 and various devices.
- Various devices include an engine 21, a flywheel housing 22, a hydraulic pump 23, a first processing device 25 as a first exhaust gas processing device, a second processing device 24 as a second exhaust gas processing device, and the like.
- the arrow F indicates the front for the work vehicle 100.
- An arrow R indicates the rear side for the work vehicle 100.
- the vehicle body frame 20 is disposed around equipment such as the engine 21 and the hydraulic pump 23 described above.
- the vehicle body frame 20 includes a plurality of support members 20a-20c and a plurality of beam members 20d and 20e.
- the strut members 20a-20c are arranged around the above-described devices, and are erected on the main frame (not shown) of the revolving structure 3.
- the beam members 20d and 20e are arranged along the horizontal direction, and are connected to the upper ends of the support members 20a to 20c. Specifically, the beam member 20 d is disposed in front of the engine 21.
- the beam member 20 e is disposed behind the engine 21.
- the hydraulic pump 23 is driven by the driving force from the engine 21. As shown in FIG. 3, the hydraulic pump 23 is disposed on the side of the engine 21. That is, the hydraulic pump 23 is arranged side by side with the engine 21 in the vehicle width direction.
- FIG. 3 is a view of the internal structure of the engine compartment 16 shown in FIG. 2 as viewed from the rear. In FIG. 3, the body frame 20 is not shown for easy understanding.
- a flywheel housing 22 is disposed between the engine 21 and the hydraulic pump 23.
- the hydraulic pump 23 is disposed at a position lower than the upper surface of the engine 21. Further, the upper surface of the hydraulic pump 23 is located below the upper surface of the flywheel housing 22.
- the flywheel housing 22 is attached to the side surface of the engine 21.
- a hydraulic pump 23 is attached to the side surface of the flywheel housing 22.
- the first processing device 25 is a device for processing the exhaust gas from the engine 21 and is a diesel particulate filter filter type processing device.
- the 1st processing apparatus 25 collects the particulate matter contained in exhaust gas with a filter, and incinerates the collected particulate matter with the heater attached to the filter.
- the first processing device 25 has a substantially cylindrical outer shape.
- the central axis of the first processing device 25 is arranged along the front-rear direction. Accordingly, the central axis of the first processing device 25 is disposed substantially perpendicular to the direction in which the engine 21 and the hydraulic pump 23 are arranged. Further, the central axis of the first processing device 25 is disposed substantially parallel to the central axis of the second processing device 24.
- the central axis of the first processing device 25 is disposed between the central axis of the second processing device 24 and the engine 21 in the vehicle width direction, and is positioned above the central axis of the second processing device 24. .
- the first processing device 25 is disposed closer to the engine 21 than the second processing device 24 and above the second processing device 24. Further, as shown in FIG. 3, the right side portion of the first processing device 25 is located above the second processing device 24. Therefore, as shown in FIG. 4, the first processing device 25 is disposed so as to partially overlap the second processing device 24 in a top view. Further, the first processing device 25 is arranged so as to be shifted in the front-rear direction with respect to the second processing device 24. Specifically, the front end portion of the first processing device 25 is located behind the front end portion of the second processing device 24. Further, the rear end portion of the first processing device 25 is located behind the rear end portion of the second processing device 24.
- the first processing device 25 has a first connection port 36 and a second connection port 35.
- a first connection pipe 37 is connected to the first connection port 36.
- the first connection port 36 is provided at the rear end of the side surface of the first processing device 25.
- the first connection port 36 is provided so as to protrude leftward and obliquely upward from the side surface of the first processing device 25.
- the second connection port 35 is connected to a second connection pipe 33 described later.
- the second connection port 35 is provided at the front end portion of the side surface of the first processing device 25.
- the second connection port 35 is provided so as to protrude from the side surface of the first processing device 25 toward the right side.
- the 2nd connection port 35 is located behind the 4th connection port 32 of the 2nd processing device 24 mentioned below.
- the second connection pipe 33 connected to the second connection port 35 is arranged side by side with the exhaust pipe 34 in the front-rear direction, avoiding the exhaust pipe 34 on the second processing device 24. This prevents the second connection pipe 33 from interfering with the exhaust pipe 34.
- the second processing device 24 is a device for processing exhaust gas from the engine 21, and is a selective reduction catalyst type (Selective Catalytic Reduction) processing device that hydrolyzes urea and selectively reduces only nitrogen oxides NOx. It is.
- the second processing device 24 has a substantially cylindrical outer shape.
- the central axis of the second processing device 24 is arranged along the front-rear direction. Accordingly, the central axis of the second processing device 24 is disposed substantially perpendicular to the direction in which the engine 21 and the hydraulic pump 23 are arranged.
- the second processing device 24 is disposed above the hydraulic pump 23. That is, the second processing device 24 is disposed so as to overlap with the hydraulic pump 23 in a top view. Further, the bottom of the second processing device 24 is positioned below the upper surface of the engine 21. That is, at least the bottom of the second processing device 24 is disposed so as to overlap the engine 21 in a side view.
- the second processing device 24 has a third connection port 31 and a fourth connection port 32.
- FIG. 4 is a top view of a part of the device shown in FIG.
- a second connection pipe 33 is connected to the third connection port 31.
- the third connection port 31 is provided on the upper surface of the second processing apparatus 24. Specifically, the third connection port 31 is provided at the rear end portion of the upper surface of the second processing apparatus 24. The third connection port 31 is provided so as to protrude upward from the upper surface of the second processing apparatus 24.
- the fourth connection port 32 is provided at the front end portion of the upper surface of the second processing apparatus 24. The fourth connection port 32 is provided so as to protrude upward from the upper surface of the second processing apparatus 24.
- An exhaust pipe 34 is connected to the fourth connection port 32. Although not shown in FIGS. 2 to 5, the exhaust pipe 34 is connected to a terminal portion 19 that protrudes upward from the engine hood 17 described above.
- the first connection pipe 37 connects the engine 21 and the first processing device 25.
- One end of the first connection pipe 37 is connected to the side surface of the first processing device 25.
- the other end of the first connection pipe 37 is connected to the exhaust port of the engine 21 via the turbocharger 41.
- the first connection pipe 37 is disposed so as to pass above the engine 21.
- a front portion of the first connection pipe 37 is bent in the vehicle width direction toward the turbocharger 41.
- the rear portion of the first connection pipe 37 is bent in the vehicle width direction toward the first connection port 36 of the first processing device 25.
- An intermediate portion of the first connection pipe 37 is disposed to be inclined with respect to the horizontal direction.
- the intermediate part of the 1st connection piping 37 is formed in the bellows shape so that the vibration of the engine 21 or the 1st processing apparatus 25 may be absorbed.
- the second connection pipe 33 connects the first processing device 25 and the second processing device 24.
- One end of the second connection pipe 33 is connected to the side surface of the first processing device 25.
- the other end of the second connection pipe 33 is connected to the upper surface of the second processing apparatus 24.
- the second connection pipe 33 is disposed so as to pass above the second processing device 24. More specifically, the second connection pipe 33 is in a space (see the two-dot chain line S1 shown in FIG. 3) that is directly above the second processing device 24 and below the upper surface of the first processing device 25. Has been placed.
- a front portion of the second connection pipe 33 is bent in the vehicle width direction toward the second connection port 35 of the first processing device 25.
- the rear portion of the second connection pipe 33 is bent in the vertical direction toward the third connection port 31 of the second processing apparatus 24.
- An intermediate portion of the second connection pipe 33 extends along the front-rear direction.
- the intermediate part of the 2nd connection piping 33 is formed in the bellows shape so that the vibration of the 2nd processing apparatus 24 or the 1st processing apparatus 25 may be absorbed.
- the engine 21, the first connection pipe 37, the first processing device 25, the second connection piping 33, the second processing device 24, and the exhaust pipe 34 are sequentially connected in series. Therefore, the exhaust gas from the engine 21 passes through the first connection pipe 37 and is sent to the first processing device 25. In the first processing device 25, the particulate matter is mainly reduced from the exhaust gas. Next, the exhaust gas passes through the second connection pipe 33 and is sent to the second processing device 24. In the second processing device 24, NOx is mainly reduced. Thereafter, the cleaned exhaust gas is discharged to the outside through the exhaust pipe 34.
- the first processing device 25 and the second processing device 24 are connected by a connecting frame 42.
- the first processing device 25, the second processing device 24, and the connection frame 42 are integrated to form an exhaust gas processing unit 40.
- the exhaust gas processing unit 40 is attached to the vehicle body frame 20 by fixing the connecting frame 42 to the vehicle body frame 20. Further, the exhaust gas processing unit 40 is removed from the vehicle body frame 20 by releasing the connection frame 42 from the vehicle body frame 20.
- the connecting frame 42 has a plurality of frame members 43a-43c, a first bracket 45, and a pair of first brackets 44a, 44b.
- the frame members 43a-43c are combined in a bent shape so as to surround the first processing device 25 and the second processing device 24.
- the frame members 43a-43c are fixed to the vehicle body frame 20 via a vibration absorbing member 46 made of an elastic body such as rubber.
- the frame member 43a is fixed to the beam member 20e.
- the frame member 43c is fixed to the beam member 20d.
- the first bracket 45 is a member for attaching the first processing device 25 to the frame members 43a-43c.
- the first bracket 45 is provided across the frame member 43a and the frame member 43c.
- the bottom of the first processing device 25 is positioned above the frame members 43a-43c, and the first processing device 25 is fixed so as to be placed on the first bracket 45.
- the second brackets 44a and 44b are members for attaching the second processing device 24 to the frame members 43a-43c.
- the second brackets 44 a and 44 b are arranged at a distance from each other in the axial direction of the second processing device 24, and are respectively fixed to ends in the axial direction of the second processing device 24.
- the bottom of the second processing device 24 is positioned below the frame members 43a-43c, and a part of the second brackets 44a and 44b is disposed above the second processing device 24. Therefore, the second processing device 24 is fixed so as to be suspended from the second brackets 44a and 44b.
- recesses 47 a and 47 b are provided at the ends of the second brackets 44 a and 44 b, respectively, so as to avoid interference with the second connection pipe 33 and the exhaust pipe 34.
- the second brackets 44 a and 44 b are provided with a plurality of ribs 48.
- the first bracket 45 is provided with a plurality of ribs 49.
- the second brackets 44a and 44b are fixed to the second processing device 24 and the frame members 43a and 43c without the vibration absorbing member.
- the first bracket 45 is fixed to the first processing device 25 and the frame members 43a and 43c without using a vibration absorbing member. Therefore, the second processing device 24, the first processing device 25, and the connection frame 42 are firmly connected to each other so as to vibrate integrally.
- the work vehicle 100 according to the present embodiment has the following characteristics.
- the first processing device 25 and the second processing device 24 are arranged so as to overlap each other when viewed from above, so that the first processing device 25 and the second processing device 24 are closely arranged. For this reason, the installation space of the 1st processing apparatus 25 and the 2nd processing apparatus 24 can be made small. Thereby, even if two exhaust gas processing apparatuses are mounted, it is possible to suppress an increase in the size of the vehicle body of work vehicle 100.
- the first processing device 25 is located above the second processing device 24, so that the second processing Only the first processing device 25 can be detached from the connection frame 42 and removed from the vehicle body without removing the device 24 from the connection frame 42.
- the first processing device 25 needs to be maintained more frequently than the second processing device 24 in order to collect particulate matter. For this reason, maintainability can be improved by being able to remove the 1st processing apparatus 25 easily.
- the second connection pipe 33 is connected to the side surface of the first processing device 25 and the upper surface of the second processing device 24 and passes above the second processing device 24. That is, the space above the second processing device 24 is used as an installation space for the second connection pipe 33. Further, the third connection port 31 and the second connection port 35 are arranged at a distance in the axial direction of the second processing device 24 and the first processing device 25. Thereby, even if the 2nd processing apparatus 24 and the 1st processing apparatus 25 are arrange
- the first processing device 25 and the second processing device 24 can be attached to and detached from the vehicle body. Easy.
- the first processing device 25, the second processing device 24, and the connecting frame 42 are connected to each other so as to integrally vibrate, the first processing device 25 and the second processing device 24 may vibrate separately. It can be suppressed. For this reason, the load to the 2nd connection piping 33 can be reduced. Further, since the connecting frame 42 is fixed to the vehicle body frame 20 via the vibration absorbing member 46, the vibration of the exhaust gas processing unit 40 is suppressed by the vibration absorbing member 46.
- the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
- the present invention can be applied to work vehicles other than hydraulic excavators.
- the second connection pipe 33 may be disposed so as to pass below the first processing device 25.
- one end of the second connection pipe 33 is connected to the lower surface of the first processing apparatus 25, and the other end of the second connection pipe 33 is connected to the side surface of the second processing apparatus 24.
- the second connection port 35 is provided on the lower surface of the first processing device 25, and the third connection port 31 is provided on the side surface of the second processing device 24.
- the second connection pipe 33 is disposed in a space (see a two-dot chain line S ⁇ b> 2 shown in FIG. 8) that is directly below the first processing device 25 and above the lower surface of the second processing device 24.
- FIG. 7 is a view of the first processing device 25 and the second processing device 24 as viewed from below.
- FIG. 8 is a view of a device including the first processing device 25, the second processing device 24, and the second connection pipe 33 as viewed from the rear.
- the entire first processing device 25 may be located above the second processing device 24. However, the installation space of the first processing device 25 and the second processing device 24 is smaller when the bottom of the first processing device 25 is located below the upper surface of the second processing device 24 as in the above-described embodiment. This is more preferable.
- the second processing device 24 may be a diesel particulate filter type processing device, and the first processing device 25 may be a selective catalytic reduction type processing device. .
- the first connection pipe 37 is provided as shown in FIG.
- the configuration of the second connection pipe 33 is the same as that in the above embodiment. In this case, by taking out the second processing device 24 downward, the maintainability can be improved as in the above embodiment.
- first processing device 25 and the second processing device 24 may be provided opposite to those in the above embodiment.
- first processing device 25 may be disposed so as to be shifted forward with respect to the second processing device 24.
- arrangement of the second connection port 35 and the first connection port 36, and the third connection port 31 and the fourth connection port 32 may be opposite to those of the above-described embodiment.
- the arrangement direction of the engine 21, the hydraulic pump 23, the first processing device 25, the second processing device 24, etc. on the vehicle body is not limited to the above.
- the engine 21 and the hydraulic pump 23 may be arranged side by side in the front-rear direction of the vehicle body.
- the arrangement of devices such as the first processing device 25 and the second processing device 24 may be changed as appropriate according to the arrangement of the engine 21 and the hydraulic pump 23.
- the “vehicle width direction” may be read as the direction in which the engine 21 and the hydraulic pump 23 are arranged.
- the “right side” may be read as the pump side, and the “left side” may be read as the engine side.
- a device of a different system from the above may be used as the first exhaust gas treatment device or the second exhaust gas treatment device.
- an OC (oxidation catalyst) type device or an LNT (NOx storage catalyst) type device may be used.
- an increase in the size of the vehicle body can be suppressed in a work vehicle equipped with a plurality of exhaust gas treatment devices.
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
20 車体フレーム
21 エンジン
23 油圧ポンプ
25 第処理装置(第1の排気ガス処理装置)
24 第2処理装置(第2の排気ガス処理装置)
33 第2接続配管(接続配管)
40 排気ガス処理ユニット
42 連結フレーム
46 振動吸収部材
100 作業車両
Claims (11)
- エンジンと、
前記エンジンと並んで配置され、前記エンジンの上面より低い位置に配置されており、前記エンジンからの駆動力によって駆動される油圧ポンプと、
前記油圧ポンプからの作動油によって駆動される作業機と、
前記エンジンからの排気ガスを処理する第1の排気ガス処理装置と、
前記油圧ポンプの上方に配置され、前記エンジンからの排気ガスを処理する第2の排気ガス処理装置と、
を備え、
前記第1の排気ガス処理装置は、前記第2の排気ガス処理装置よりも前記エンジンに近く、且つ、前記第2の排気ガス処理装置よりも上方に配置され、上面視において前記第2の排気ガス処理装置と部分的に重なって配置され、前記エンジンからの排気ガスを処理する、
作業車両。 - 一端が前記第1の排気ガス処理装置の側面に接続され、前記第2の排気ガス処理装置の上方を通り、他端が前記第2の排気ガス処理装置の上部に接続される接続配管をさらに備える、
請求項1に記載の作業車両。 - 前記接続配管は、前記第2の排気ガス処理装置の直上であり且つ前記第1の排気ガス処理装置の上面よりも下方に位置する空間内に配置されている、
請求項2に記載の作業車両。 - 一端が前記エンジンに接続され、他端が前記第1の排気ガス処理装置の一方の側面に接続される第1接続配管と、
一端が前記第1の排気ガス処理装置の他方の側面に接続され、前記第2の排気ガス処理装置の上方を通り、他端が前記第2の排気ガス処理装置の軸方向における一方の端部側の上部に接続される第2接続配管と、
前記第2の排気ガス処理装置の軸方向における他方の端部側の上部に接続される排気管と、
をさらに備える請求項1に記載の作業車両。 - 前記第1の排気ガス処理装置と前記第2の排気ガス処理装置とは、互いに軸方向にずれて配置されており、
前記第2接続配管と前記排気管とは、前記第2の排気ガス処理装置の上方において軸方向に並んで配置される、
請求項4に記載の作業車両。 - 一端が前記第1の排気ガス処理装置の下部に接続され、前記第1の排気ガス処理装置の下方を通り、他端が前記第2の排気ガス処理装置の側面に接続される接続配管をさらに備える、
請求項1に記載の作業車両。 - 前記接続配管は、前記第1の排気ガス処理装置の直下であり且つ前記第2の排気ガス処理装置の下面よりも上方に位置する空間内に配置されている、
請求項6に記載の作業車両。 - 前記エンジン及び油圧ポンプの周囲に配置される車体フレームと、
前記第1の排気ガス処理装置と前記第2の排気ガス処理装置とを連結する連結フレームと、
をさらに備え、
前記第1の排気ガス処理装置と前記第2の排気ガス処理装置と前記連結フレームとは、排気ガス処理ユニットを構成しており、
前記排気ガス処理ユニットは、前記連結フレームが前記車体フレームに固定されることにより、前記車体フレームに取り付けられる、
請求項1に記載の作業車両。 - 前記連結フレームは、弾性体からなる振動吸収部材を介して前記車体フレームに固定される、
請求項8に記載の作業車両。 - 前記第1の排気ガス処理装置は、ディーゼル微粒子捕集フィルター型の処理装置であり、
前記第2の排気ガス処理装置は、選択還元触媒型の処理装置である、
請求項1から9のいずれかに記載の作業車両。 - 前記第1の排気ガス処理装置は、選択還元触媒型の処理装置である、
前記第2の排気ガス処理装置は、ディーゼル微粒子捕集フィルター型の処理装置である、
請求項1から9のいずれかに記載の作業車両。
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DE112011100075T DE112011100075T5 (de) | 2010-05-31 | 2011-05-27 | Arbeitsfahrzeug |
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US13/515,452 US9180774B2 (en) | 2010-05-31 | 2011-05-27 | Work vehicle |
JP2012518360A JP5205551B2 (ja) | 2010-05-31 | 2011-05-27 | 作業車両 |
KR1020127013629A KR20120088764A (ko) | 2010-05-31 | 2011-05-27 | 작업 차량 |
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JP7459714B2 (ja) | 2019-07-31 | 2024-04-02 | コベルコ建機株式会社 | 建設機械の駆動装置及び建設機械の排気ガス処理装置を支持するための架台 |
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DE112011100075T5 (de) | 2012-10-31 |
US9180774B2 (en) | 2015-11-10 |
JPWO2011152306A1 (ja) | 2013-08-01 |
US20120247861A1 (en) | 2012-10-04 |
CN102639831A (zh) | 2012-08-15 |
KR20120088764A (ko) | 2012-08-08 |
JP5205551B2 (ja) | 2013-06-05 |
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