WO2014061168A1 - 油圧ショベル - Google Patents
油圧ショベル Download PDFInfo
- Publication number
- WO2014061168A1 WO2014061168A1 PCT/JP2012/080010 JP2012080010W WO2014061168A1 WO 2014061168 A1 WO2014061168 A1 WO 2014061168A1 JP 2012080010 W JP2012080010 W JP 2012080010W WO 2014061168 A1 WO2014061168 A1 WO 2014061168A1
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- WO
- WIPO (PCT)
- Prior art keywords
- reducing agent
- disposed
- engine
- frame
- pipe
- Prior art date
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Classifications
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- 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
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- 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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- 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
- E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
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- 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
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
-
- 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
- E02F9/18—Counterweights
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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
- F01N13/1811—Fixing 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
- F01N13/1822—Fixing 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
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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
- F01N3/10—Exhaust 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
- F01N3/18—Exhaust 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
- F01N3/20—Exhaust 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
- F01N3/2066—Selective catalytic reduction [SCR]
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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
- F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
- F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
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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
- 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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- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
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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
-
- 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
-
- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a hydraulic excavator.
- the exhaust excavator is mounted on the hydraulic excavator.
- the exhaust treatment device is connected to the engine via a connection pipe in order to process exhaust from the engine.
- the exhaust treatment device includes a selective reduction catalyst device.
- the selective reduction catalyst device reduces nitrogen oxides (NOx) in the exhaust.
- the selective catalytic reduction device treats exhaust gas using a reducing agent such as urea water. For this reason, it is necessary to arrange
- the reducing agent may be altered in a high temperature environment. Therefore, in Patent Document 1, the reducing agent tanks are distributed and arranged at a plurality of locations on the hydraulic excavator. In a high temperature environment, it is disclosed that the reducing agent tank is disposed at a location away from the heat source to suppress the deterioration of the reducing agent.
- Patent Document 1 although the arrangement of the reducing agent tank is considered, no consideration is given to the arrangement of the reducing agent pipe for supplying the reducing agent to the selective reduction catalyst device. However, even if the reducing agent tank is arranged avoiding a high temperature environment, if the reducing agent pipe is placed in a high temperature environment, the reducing agent flowing in the reducing agent pipe may be deteriorated by the high temperature. . In particular, the reducing agent may be supplied at a very slow rate of a few centimeters per second. In this case, the reducing agent flowing in the reducing agent pipe is greatly affected by the thermal environment around the reducing agent pipe.
- the length of the reducing agent pipe becomes longer.
- the reducing agent pipe is easily affected by the thermal environment around the reducing agent pipe.
- the length of the reducing agent pipe becomes long, it becomes difficult to arrange the reducing agent pipe without interfering with other members. If the reducing agent pipe interferes with other members, the reducing agent pipe may be damaged. Alternatively, the reducing agent pipe may be damaged by an external factor.
- An object of the present invention is to provide a hydraulic excavator that can reduce the influence of heat on the reducing agent and protect the reducing agent piping.
- a hydraulic excavator includes an engine, a turning frame, an engine room, an exhaust treatment unit, a reducing agent injection device, a reducing agent tank, a reducing agent supply pump, and a reducing agent pipe.
- the swivel frame supports the engine.
- the engine room houses the engine.
- the exhaust treatment unit includes a selective reduction catalyst device that treats exhaust from the engine.
- the exhaust treatment unit is disposed in the engine compartment.
- the reducing agent injection device is attached to the exhaust treatment unit.
- the reducing agent injection device injects a reducing agent supplied to the selective reduction catalyst device.
- the reducing agent tank is disposed outside the engine compartment.
- the reducing agent tank stores the reducing agent.
- the reducing agent supply pump is disposed outside the engine compartment.
- the reducing agent supply pump supplies the reducing agent from the reducing agent tank to the reducing agent injection device.
- the reducing agent pipe connects the reducing agent supply pump and the reducing agent injection device.
- the swivel frame includes a tubular frame. The reducing agent pipe is arranged from the reducing agent supply pump through the inside of the tubular frame to the reducing agent injection device.
- the hydraulic excavator according to the second aspect of the present invention is the hydraulic excavator according to the first aspect, and further includes a vehicle body frame.
- the body frame is erected on the revolving frame and includes a plurality of pillar members.
- the exhaust treatment unit is supported by the vehicle body frame.
- the reducing agent pipe is disposed so as to pass through the inside of the tubular frame and the inside of the column member of the vehicle body frame.
- the hydraulic excavator according to the third aspect of the present invention is the hydraulic excavator according to the second aspect, and the plurality of column members include a first column member.
- the first pillar member extends upward from the swivel frame toward the exhaust treatment unit.
- the reducing agent pipe is arranged to pass through the inside of the tubular frame and the inside of the first pillar member.
- the hydraulic excavator according to the fourth aspect of the present invention is the hydraulic excavator according to the second aspect, and the plurality of column members include a second column member.
- the second column member is disposed outward in the vehicle width direction with respect to the exhaust treatment unit.
- the reducing agent pipe is disposed so as to pass through the inside of the tubular frame and the inside of the second column member.
- the hydraulic excavator according to the fifth aspect of the present invention is the hydraulic excavator according to the fourth aspect, and further includes an exterior cover.
- the exterior cover is attached to the second pillar member.
- a hydraulic excavator according to a sixth aspect of the present invention is the hydraulic excavator according to any one of the first to fifth aspects, and the turning frame includes a center frame.
- the center frame is disposed below the engine.
- the tubular frame is disposed outside the center frame in the vehicle width direction.
- the hydraulic excavator according to the seventh aspect of the present invention is the hydraulic excavator according to any one of the first to fifth aspects, and the tubular frame is disposed on the outermost side in the vehicle width direction in the turning frame.
- the hydraulic excavator according to the eighth aspect of the present invention is the hydraulic excavator according to any one of the first to fifth aspects, and the tubular frame extends in the vehicle front-rear direction.
- a hydraulic excavator according to a ninth aspect of the present invention is the hydraulic excavator according to any one of the first to fifth aspects, and further includes a fuel tank that stores fuel.
- the fuel tank is disposed between the reducing agent supply pump and the engine compartment.
- a hydraulic excavator according to a tenth aspect of the present invention is the hydraulic excavator according to any one of the first to fifth aspects, and further includes a hydraulic oil tank that stores hydraulic oil.
- the hydraulic oil tank is disposed between the reducing agent supply pump and the engine compartment.
- the hydraulic excavator according to the eleventh aspect of the present invention is the hydraulic excavator according to any one of the second to fifth aspects, and further includes a counterweight.
- the counterweight is disposed adjacent to the engine compartment.
- the column member through which the reducing agent pipe is passed covers at least the counterweight side of the reducing agent pipe.
- the hydraulic excavator according to the twelfth aspect of the present invention is the hydraulic excavator according to any one of the second to fifth aspects, and the exhaust treatment unit further includes a diesel particulate filter device and a connecting pipe.
- the diesel particulate filter device processes the exhaust from the engine.
- the connecting pipe connects the diesel particulate filter device and the selective catalytic reduction device.
- the reducing agent injection device is attached to the connecting pipe. The reducing agent injection device injects a reducing agent into the connecting pipe.
- the reducing agent tank and the reducing agent supply pump are disposed outside the engine compartment. For this reason, the thermal influence from an engine room with respect to the reducing agent in a reducing agent tank and the reducing agent in a reducing agent supply pump can be reduced.
- the reducing agent pipe is disposed from the reducing agent supply pump through the inside of the tubular frame to the reducing agent injection device. For this reason, even if a reducing agent piping becomes long, the thermal influence to the reducing agent in a reducing agent piping can be reduced.
- the reducing agent pipe is disposed so as to pass through the inside of the tubular frame, the reducing agent pipe can be protected by the tubular frame.
- the reducing agent pipe can be passed through the internal space of the column member of the vehicle body frame that supports the exhaust treatment unit. Thereby, the thermal influence on the reducing agent in the reducing agent pipe can be further reduced.
- the reducing agent pipe can be arranged so as to extend upward from the swivel frame toward the exhaust treatment unit. Therefore, the reducing agent pipe can be arranged so that the path length of the reducing agent pipe is as short as possible.
- the reducing agent pipe can be disposed so as to pass through a position close to the outside of the vehicle. Thereby, the thermal influence on the reducing agent in the reducing agent pipe can be further reduced.
- the reducing agent pipe can be disposed so as to pass through a position close to the outside of the vehicle. Thereby, the thermal influence on the reducing agent in the reducing agent pipe can be further reduced.
- the reducing agent pipe can be disposed so as to pass through a position close to the outside of the vehicle. Thereby, the thermal influence on the reducing agent in the reducing agent pipe can be further reduced.
- the reducing agent pipe can be arranged so as to pass through a position close to the outside of the vehicle. Thereby, the thermal influence on the reducing agent in the reducing agent pipe can be further reduced.
- the tubular frame extends in the vehicle front-rear direction. Therefore, since the reducing agent pipe can be extended in the longitudinal direction of the vehicle, the reducing agent supply pump can be arranged far away from the engine compartment.
- the fuel tank is disposed between the reducing agent supply pump and the engine compartment. Therefore, the reducing agent supply pump can be arranged far away from the engine compartment. Thereby, the heat influence from an engine room with respect to the reducing agent in a reducing agent supply pump can be reduced.
- the hydraulic oil tank is disposed between the reducing agent supply pump and the engine compartment. Therefore, the reducing agent supply pump can be arranged far away from the engine compartment. Thereby, the heat influence from an engine room with respect to the reducing agent in a reducing agent supply pump can be reduced.
- the column member through which the reducing agent pipe is passed covers at least the counterweight side of the reducing agent pipe. For this reason, even when the counterweight is removed from the vehicle, it is possible to prevent the reducing agent pipe from being exposed to the outside.
- the reducing agent pipe can be arranged using the internal space of the column member so as to extend to the connection pipe of the exhaust treatment unit supported by the vehicle body frame.
- FIG. 1 is a perspective view of a hydraulic excavator according to a first embodiment of the present invention.
- VI-VI sectional drawing in FIG. VII-VII sectional view in FIG. The figure which looked at the internal structure of the engine room of the hydraulic excavator which concerns on other embodiment from back.
- FIG. 1 shows a hydraulic excavator 100 according to the first embodiment of the present invention.
- the excavator 100 includes a vehicle main body 1 and a work machine 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 excavator 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 front-rear direction is the front-rear direction viewed from the operator seated in the cab 5.
- the left-right direction or the side means the vehicle width direction of the vehicle body 1.
- the left-right direction, the vehicle width direction, or the side is the left-right direction viewed from the operator.
- the front-rear direction is indicated by the x axis
- the left-right direction is indicated by the y-axis
- the up-down direction is indicated by the z-axis.
- 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.
- the revolving unit 3 is provided with a cab 5.
- 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 room 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 counterweight 18 is disposed adjacent to the engine compartment 16. Specifically, the counterweight 18 is disposed behind the engine chamber 16.
- the work machine 4 is attached to the center of the front part of the revolving unit 3.
- the work machine 4 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 and 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.
- FIG. 2 is a view of the internal structure of the engine compartment 16 as viewed from the rear. As shown in FIG. 2, an engine 21, a flywheel housing 22, a hydraulic pump 23, and an exhaust treatment unit 24 are disposed in the engine chamber 16. A cooling device 25 including a radiator and an oil cooler is disposed in the engine chamber 16. The cooling device 25, the engine 21, the flywheel housing 22, and the hydraulic pump 23 are arranged side by side in the vehicle width direction.
- the hydraulic pump 23 is disposed on the first side of the engine 21.
- the first side is the right side.
- the direction opposite to the first side in the vehicle width direction is referred to as the second side.
- the second side is the left side.
- FIG. 3 is a plan view of the turning frame 26 and the vehicle body frame 27.
- the excavator 100 has a turning frame 26 and a body frame 27.
- the turning frame 26 includes center frames 31 and 32 extending in the front-rear direction.
- the center frames 31 and 32 are disposed below the engine 21 (see FIG. 2).
- the center frames 31 and 32 support the engine 21 via rubber dampers.
- the center frames 31 and 32 include a first center frame 31 and a second center frame 32.
- FIG. 4 is a side view of the turning frame 26 and the body frame 27. 3 and 4, a part of the vehicle body frame 27 and devices such as the engine 21 and the hydraulic pump 23 are omitted for easy understanding.
- the turning frame 26 includes a first tubular frame 33 and a second tubular frame 34.
- the first tubular frame 33 and the second tubular frame 34 each extend in the vehicle front-rear direction.
- the first tubular frame 33 is disposed outside the center frames 31 and 32 in the vehicle width direction. Specifically, the first tubular frame 33 is disposed on the first side of the center frames 31 and 32.
- the first tubular frame 33 is disposed on the outermost side in the vehicle width direction in the turning frame 26.
- the second tubular frame 34 is disposed outside the center frames 31 and 32 in the vehicle width direction. Specifically, the second tubular frame 34 is disposed on the second side of the center frames 31 and 32.
- the body frame 27 is erected on the turning frame 26.
- the vehicle body frame 27 is disposed in the engine compartment 16.
- the vehicle body frame 27 is disposed around equipment such as the engine 21 and the hydraulic pump 23.
- An exterior cover 28 is attached to the vehicle body frame 27. In FIG. 2, only a part of the exterior cover 28 is illustrated.
- the engine hood 17 shown in FIG. 1 is also attached to the vehicle body frame 27.
- the vehicle body frame 27 includes a plurality of pillar members 51-56 and a plurality of beam members 36, 37.
- the column members 51-56 are arranged so as to extend upward from the revolving frame 26.
- the beam members 36 and 37 are supported by column members 51-56.
- the plurality of beam members 36 and 37 include a first beam member 36 and a second beam member 37.
- the first beam member 36 and the second beam member 37 are arranged away from each other in the front-rear direction.
- the plurality of column members 51-56 include a first column member 51 and a second column member 52.
- the first column member 51 extends upward from the revolving frame 26 toward the exhaust processing unit 24.
- the second column member 52 is disposed outward in the vehicle width direction from the exhaust treatment unit 24.
- the second column member 52 is disposed outward in the vehicle width direction from the engine 21. In other words, the second column member 52 is disposed on the first side of the exhaust processing unit 24.
- An exterior cover 28 is attached to the second column member 52.
- the plurality of column members 51-56 include a third column member 53 and a fourth column member 54.
- the third column member 53 is disposed between the first center frame 31 and the second center frame 32 in the vehicle width direction.
- the fourth column member 54 is disposed on the second side side with respect to the second center frame 32.
- An exterior cover (not shown) is attached to the fourth column member 54.
- the first column member 51, the second column member 52, the third column member 53, and the fourth column member 54 support the second beam member 37.
- the plurality of column members 51-56 include a fifth column member 55 and a sixth column member 56.
- the fifth column member 55 and the sixth column member 56 are disposed in front of the first to fourth column members 51-54.
- the fifth column member 55 and the sixth column member 56 are disposed on the first side side of the first center frame 31.
- the fifth column member 55 and the sixth column member 56 support the first beam member 36 together with a column member (not shown) disposed on the second lateral side of the second center frame 32.
- 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. The hydraulic pump 23 is driven by the engine 21. The hydraulic pump 23 is disposed at a position lower than the upper surface of the engine 21.
- the flywheel housing 22 is disposed between the engine 21 and the hydraulic pump 23.
- the flywheel housing 22 is attached to the side surface of the engine 21.
- the hydraulic pump 23 is attached to the side surface of the flywheel housing 22.
- the exhaust treatment unit 24 includes a diesel particulate filter device 41, a selective reduction catalyst device 42, and a bracket 43.
- the exhaust processing unit 24 is disposed above the hydraulic pump 23.
- FIG. 5 is a top view showing the internal structure of the engine compartment 16. As shown in FIG. 5, the first beam member 36 is disposed in front of the engine 21. The second beam member 37 is disposed behind the engine 21. The exhaust processing unit 24 is disposed between the first beam member 36 and the second beam member 37. The exhaust treatment unit 24 is supported by a beam member. That is, the diesel particulate filter device 41 and the selective catalytic reduction device 42 are supported by the vehicle body frame 27.
- the diesel particulate filter device 41 is a device that processes exhaust from the engine 21.
- the diesel particulate filter device 41 collects particulate matter contained in the exhaust gas with a filter.
- the diesel particulate filter device 41 incinerates the collected particulate matter with a heater attached to the filter.
- the diesel particulate filter device 41 is arranged with its longitudinal direction orthogonal to the first direction.
- the first direction is a predetermined direction on the horizontal plane, and in the present embodiment is the vehicle width direction.
- the engine 21, the selective reduction catalyst device 42, and the diesel particulate filter device 41 have respective projections on the horizontal plane arranged in the first direction in the order of the engine 21, the selective reduction catalyst device 42, and the diesel particulate collection filter device 41.
- the selective catalytic reduction device 42 is disposed on the first side of the engine 21.
- the diesel particulate filter device 41 is disposed on the first side of the selective reduction catalyst device 42.
- the selective catalytic reduction device 42 is a device that processes exhaust from the engine 21.
- the selective reduction catalyst device 42 hydrolyzes urea and selectively reduces nitrogen oxides NOx.
- the selective catalytic reduction device 42 is arranged with its longitudinal direction orthogonal to the first direction.
- the hydraulic excavator 100 includes a first connection pipe 44. As shown in FIG. 5, one end of the first connection pipe 44 is connected to the exhaust port of the engine 21 via the supercharger 29. The other end of the first connection pipe 44 is connected to the diesel particulate filter device 41. That is, the first connecting pipe 44 connects the engine 21 and the diesel particulate filter device 41.
- the first connection pipe 44 is located below the exhaust processing unit 24.
- the exhaust treatment unit 24 has a second connection pipe 45.
- One end of the second connection pipe 45 is connected to the diesel particulate filter device 41.
- the other end of the second connection pipe 45 is connected to the selective reduction catalyst device 42. That is, the second connection pipe 45 connects the diesel particulate filter device 41 and the selective reduction catalyst device 42.
- the second connection pipe 45 is located above the selective reduction catalyst device 42.
- the hydraulic excavator 100 includes a third connection pipe 46.
- One end of the third connection pipe 46 is connected to the selective reduction catalyst device 42.
- the other end of the third connection pipe 46 protrudes upward from the engine hood 17.
- the engine 21, the first connection pipe 44, the diesel particulate filter device 41, the second connection pipe 45, the selective catalytic reduction device 42, and the third connection pipe 46 are connected in series in order. ing. Accordingly, the exhaust from the engine 21 passes through the first connection pipe 44 and is sent to the diesel particulate filter device 41. In the diesel particulate filter device 41, the particulate matter is mainly reduced from the exhaust gas. Next, the exhaust gas passes through the second connection pipe 45 and is sent to the selective reduction catalyst device 42. In the selective reduction catalyst device 42, NOx is mainly reduced. Thereafter, the cleaned exhaust gas is discharged to the outside through the third connection pipe 46.
- the bracket 43 connects the selective catalytic reduction device 42 and the diesel particulate filter device 41. Thereby, the selective reduction catalyst device 42, the diesel particulate filter device 41, and the bracket 43 are integrated.
- the bracket 43 is detachably attached to the vehicle body frame 27 by fixing means such as bolts. Therefore, the exhaust treatment unit 24 can be removed from the vehicle by removing the bracket 43 from the vehicle body frame 27.
- a reducing agent injection device 49 is attached to the exhaust treatment unit 24. Specifically, the reducing agent injection device 49 is attached to the second connection pipe 45. The reducing agent injection device 49 injects a reducing agent into the second connection pipe 45. The reducing agent injected from the reducing agent injection device 49 is supplied to the selective reduction catalyst device 42.
- the hydraulic excavator includes a reducing agent tank 50 and a reducing agent supply pump 47.
- the reducing agent tank 50 stores the reducing agent supplied to the selective reduction catalyst device 42.
- the reducing agent supply pump 47 is attached to the reducing agent tank 50.
- the reducing agent supply pump 47 supplies the reducing agent from the reducing agent tank 50 to the reducing agent injection device 49.
- the reducing agent supply pump 47 is disposed outside the engine chamber 16. Specifically, the reducing agent supply pump 47 is disposed in front of the engine compartment 16.
- the reducing agent supply pump 47 is disposed above the first tubular frame 33.
- the fuel tank 14 and the hydraulic oil tank 15 are arranged side by side in the front-rear direction.
- the reducing agent supply pump 47 is disposed in front of the fuel tank 14 and the hydraulic oil tank 15.
- the fuel tank 14 is disposed between the reducing agent supply pump 47 and the engine chamber 16.
- the hydraulic oil tank 15 is disposed between the reducing agent supply pump 47 and the engine chamber 16.
- a reducing agent pipe 48 is connected to the reducing agent injection device 49.
- the reducing agent pipe 48 connects the reducing agent supply pump 47 and the reducing agent injection device 49.
- the reducing agent pipe 48 passes from the reducing agent supply pump 47 through the inside of the first tubular frame 33 and the inside of the first pillar member 51 of the vehicle body frame to the reducing agent injection device 49. It is arranged until.
- the reducing agent pipe 48 extends in the front-rear direction inside the first tubular frame 33.
- the reducing agent pipe 48 is bent from the rear part of the first tubular frame 33 toward the first column member 51.
- the reducing agent pipe 48 is bent upward at the lower part of the first column member 51.
- the reducing agent pipe 48 extends in the vertical direction inside the first column member 51.
- the second beam member 37 has a recess 371 through which the reducing agent pipe 48 is passed.
- the bracket 43 of the exhaust treatment unit 24 is formed with a recess 431 through which the reducing agent pipe 48 is passed.
- the reducing agent pipe 48 protrudes upward from the inside of the first column member 51 through the concave portion 371 of the second beam member 37 and the concave portion 431 of the bracket 43.
- the upper end portion of the reducing agent pipe 48 is connected to the reducing agent injection device 49.
- the reducing agent pipe 48 is fixed to the first tubular frame 33 by a fixing member 61 such as a clamp inside the first tubular frame 33.
- 6 is a sectional view taken along line VI-VI in FIG.
- the first tubular frame 33 has an outer wall portion 331 and an inner wall portion 332.
- the space inside the first tubular frame 33 is closed by the outer wall portion 331 and the inner wall portion 332.
- the outer wall portion 331 covers the outside of the reducing agent pipe 48 in the vehicle width direction.
- the inner wall portion 332 covers the inside of the reducing agent pipe 48 in the vehicle width direction.
- the fixing member 61 fixes the reducing agent pipe 48 to the first tubular frame 33. Specifically, the fixing member 61 fixes the reducing agent pipe 48 to the inner wall portion 332.
- FIG. 7 is a sectional view taken along line VII-VII in FIG.
- the first column member 51 has a box shape with the front opened.
- the first column member 51 covers both sides and the rear of the reducing agent pipe 48.
- the counterweight 18 described above is disposed behind the first column member 51. Therefore, the first column member 51 covers at least the counterweight 18 side of the reducing agent pipe 48.
- positioned inside the 1st tubular frame 33 among the reducing agent piping 48, and the downstream part from the said part have the heat insulating material 481 (refer FIG.6 and FIG.7).
- a portion of the reducing agent pipe 48 positioned below the hydraulic oil tank 15 and a portion on the downstream side of the portion have the heat insulating material 481.
- the hydraulic excavator 100 has the following features.
- the reducing agent supply pump 47 is disposed outside the engine room 16. For this reason, the thermal influence from the engine compartment 16 with respect to the reducing agent in the reducing agent supply pump 47 can be reduced.
- the reducing agent pipe 48 is arranged so as to extend from the reducing agent supply pump 47 to the reducing agent injection device 49 through the inside of the first tubular frame 33 and the inside of the first column member 51. For this reason, even if the full length of the reducing agent piping 48 becomes long, the thermal influence on the reducing agent in the reducing agent piping 48 can be reduced.
- the reducing agent pipe 48 is disposed so as to pass through the inside of the first tubular frame 33, the reducing agent pipe 48 is protected by the first tubular frame 33. Further, since the reducing agent pipe 48 is disposed so as to pass through the inside of the first column member 51, the reducing agent pipe 48 is protected by the first column member 51.
- the first column member 51 covers the counterweight 18 side of the reducing agent pipe 48. For this reason, even when the counterweight 18 is removed, the first pillar member 51 can be prevented from being exposed to the outside.
- the first direction is not limited to the vehicle width direction and may be another direction. That is, the diesel particulate filter device 41 and the selective catalytic reduction device 42 may be arranged side by side in a direction different from the vehicle width direction.
- the first direction may be the vehicle front-rear direction. That is, the diesel particulate filter device 41 and the selective catalytic reduction device 42 may be arranged side by side in the vehicle front-rear direction.
- the reducing agent pipe 48 may be arranged so as to pass through the inside of the column member other than the first column member 51.
- the reducing agent pipe 48 may be disposed so as to pass through the inside of the second column member 52.
- the first tubular frame 33 may be disposed more inward in the vehicle width direction than the other members of the turning frame 26. However, from the viewpoint of reducing the thermal influence on the reducing agent pipe 48, it is preferable that the first tubular frame 33 is disposed on the outermost side in the vehicle width direction in the turning frame 26 as in the above embodiment. .
- the arrangement of the turning frame 26, the vehicle body frame, and the reducing agent pipe 48 may be arranged opposite to the arrangement in the above embodiment. That is, in the above embodiment, the first side is right and the second side is left, but conversely, the first side is left and the second side is right. There may be. Accordingly, the first tubular frame 33 through which the reducing agent pipe 48 is passed may be arranged on the left side of the center frames 31 and 32 instead of on the right side. Further, the first column member 51 through which the reducing agent pipe 48 is passed may be arranged on the left side of the center frames 31 and 32 instead of on the right side.
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Abstract
Description
26 旋回フレーム
51 第1の柱部材
52 第2の柱部材
16 エンジン室
24 排気処理ユニット
49 還元剤噴射装置
47 還元剤供給ポンプ
48 還元剤配管
33 第1管状フレーム
31 第1センターフレーム
14 燃料タンク
15 作動油タンク
18 カウンタウェイト
27 車体フレーム
41 ディーゼル微粒子捕集フィルター装置
42 選択還元触媒装置
52 第2の接続管
28 外装カバー
Claims (12)
- エンジンと、
前記エンジンを支持する旋回フレームと、
前記エンジンを収容するエンジン室と、
前記エンジンからの排気を処理する選択還元触媒装置を含み、前記エンジン室内に配置される排気処理ユニットと、
前記排気処理ユニットに取り付けられ、前記選択還元触媒装置に供給される還元剤を噴射する還元剤噴射装置と、
前記エンジン室の外部に配置され、還元剤を貯留する還元剤タンクと、
前記エンジン室の外部に配置され、前記還元剤タンクから前記還元剤噴射装置に還元剤を供給する還元剤供給ポンプと、
前記還元剤供給ポンプと前記還元剤噴射装置とを接続する還元剤配管と、
を備え、
前記旋回フレームは、管状フレームを含み、
前記還元剤配管は、前記還元剤供給ポンプから前記管状フレームの内部を通って前記還元剤噴射装置まで配置される、
油圧ショベル。 - 前記旋回フレーム上に立設され、複数の柱部材を含む車体フレームをさらに備え、
前記排気処理ユニットは、前記車体フレームに支持されており、
前記還元剤配管は、前記管状フレームの内部および前記車体フレームの前記柱部材の内部を通るように配置される、
請求項1に記載の油圧ショベル。 - 複数の前記柱部材は、前記旋回フレームから前記排気処理ユニットに向かって上方に延びる第1の柱部材を含み、
前記還元剤配管は、前記管状フレームの内部および前記第1の柱部材の内部を通るように配置される、
請求項2に記載の油圧ショベル。 - 複数の前記柱部材は、前記排気処理ユニットよりも車幅方向における外方に配置される第2の柱部材を含み、
前記還元剤配管は、前記管状フレームの内部および前記第2の柱部材の内部を通るように配置される、
請求項2に記載の油圧ショベル。 - 外装カバーをさらに備え、
前記外装カバーは、前記第2の柱部材に取り付けられる、
請求項4に記載の油圧ショベル。 - 前記旋回フレームは、前記エンジンの下方に配置されるセンターフレームを含み、
前記管状フレームは、前記センターフレームの車幅方向における外方に配置される、
請求項1から5のいずれかに記載の油圧ショベル。 - 前記管状フレームは、前記旋回フレームにおいて車幅方向における最も外方に配置される、
請求項1から5のいずれかに記載の油圧ショベル。 - 前記管状フレームは、車両前後方向に延びている、
請求項1から5のいずれかに記載の油圧ショベル。 - 燃料を貯留する燃料タンクをさらに備え、
前記燃料タンクは、前記還元剤供給ポンプと前記エンジン室との間に配置されている、
請求項1から5のいずれかに記載の油圧ショベル。 - 作動油を貯留する作動油タンクをさらに備え、
前記作動油タンクは、前記還元剤供給ポンプと前記エンジン室との間に配置されている、
請求項1から5のいずれかに記載の油圧ショベル。 - 前記エンジン室に隣接して配置されるカウンタウェイトをさらに備え、
前記還元剤配管が通される柱部材は、前記還元剤配管の少なくとも前記カウンタウェイト側を覆う、
請求項2から5のいずれかに記載の油圧ショベル。 - 前記排気処理ユニットは、
前記エンジンからの排気を処理するディーゼル微粒子捕集フィルター装置と、
前記ディーゼル微粒子捕集フィルター装置と前記選択還元触媒装置とを接続する接続管と、
をさらに含み、
前記還元剤噴射装置は、前記接続管に取り付けられ、前記接続管内に還元剤を噴射する、
請求項2から5のいずれかに記載の油圧ショベル。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/118,409 US8955638B2 (en) | 2012-10-16 | 2012-11-20 | Hydraulic excavator |
CN201280027389.8A CN103890276B (zh) | 2012-10-16 | 2012-11-20 | 液压挖掘机 |
DE112012002491.5T DE112012002491B4 (de) | 2012-10-16 | 2012-11-20 | Hydraulikbagger |
KR1020147036721A KR101570769B1 (ko) | 2012-10-16 | 2012-11-20 | 유압 셔블 |
IN9801DEN2014 IN2014DN09801A (ja) | 2012-10-16 | 2014-11-19 |
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JP2012228793A JP5442829B1 (ja) | 2012-10-16 | 2012-10-16 | 油圧ショベル |
JP2012-228793 | 2012-10-16 |
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WO2014061168A1 true WO2014061168A1 (ja) | 2014-04-24 |
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JP (1) | JP5442829B1 (ja) |
KR (1) | KR101570769B1 (ja) |
CN (1) | CN103890276B (ja) |
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CN103890276B (zh) | 2015-07-08 |
DE112012002491T5 (de) | 2014-07-31 |
IN2014DN09801A (ja) | 2015-07-31 |
JP2014080907A (ja) | 2014-05-08 |
CN103890276A (zh) | 2014-06-25 |
KR20150023518A (ko) | 2015-03-05 |
KR101570769B1 (ko) | 2015-11-20 |
US20140196975A1 (en) | 2014-07-17 |
DE112012002491B4 (de) | 2015-08-06 |
JP5442829B1 (ja) | 2014-03-12 |
US8955638B2 (en) | 2015-02-17 |
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