WO2016098384A1 - ラフテレーンクレーン - Google Patents
ラフテレーンクレーン Download PDFInfo
- Publication number
- WO2016098384A1 WO2016098384A1 PCT/JP2015/073019 JP2015073019W WO2016098384A1 WO 2016098384 A1 WO2016098384 A1 WO 2016098384A1 JP 2015073019 W JP2015073019 W JP 2015073019W WO 2016098384 A1 WO2016098384 A1 WO 2016098384A1
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- WO
- WIPO (PCT)
- Prior art keywords
- reducing agent
- urea water
- rough terrain
- water tank
- terrain crane
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- 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
-
- 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/40—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with a single prime mover for both crane and vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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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
-
- 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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- 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
- B60Y2200/416—Cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/42—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0321—Travelling cranes
- B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
-
- 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
-
- 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
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
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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
Definitions
- the present invention relates to a rough terrain crane equipped with a selective catalytic reduction device (Selective Catalytic Reduction: hereinafter referred to as “SCR”), and more particularly to a layout of a urea water tank as a component of the SCR. .
- SCR Selective Catalytic Reduction
- Diesel engine exhaust contains particulate matter (Particulate Matter, hereinafter referred to as “PM”), nitrogen oxides (hereinafter referred to as “NOx”), and the like to prevent air pollution. Therefore, exhaust gas purification devices that prevent these substances from being released into the atmosphere have been developed.
- This exhaust purification device includes a diesel particulate filter device (Diesel Particulate Filter: hereinafter referred to as “DPF”) for collecting PM, and an oxidation catalyst device (Diesel Oxidation Catalyst: hereinafter) for removing NOx.
- DPF diesel particulate filter device
- DPF oxidation catalyst device
- the constituent elements include a reductant supply device (Decomposition Reactor Tube: hereinafter referred to as “DRT”) and a selective catalytic reduction device (Selective® Catalytic Reduction: hereinafter referred to as “SCR”).
- DVT Decomposition Reactor Tube
- SCR selective catalytic reduction device
- the required exhaust purification device is configured by combining these.
- Diesel engines are installed in a variety of vehicles. Regardless of the type of vehicle, the need for exhaust gas purification has been increasing in recent years, and SCR has also been adopted for passenger cars, trucks, crawler construction machines, etc. . And since the urea water is used in the exhaust gas purification process by the SCR, a urea water tank for storing the urea water is mounted on the vehicle (see, for example, Patent Document 1 and Patent Document 2).
- the rough terrain crane is generally equipped with a four-wheel drive and four-wheel steerable travel device, and exhibits excellent turning performance and rough terrain travel.
- the rough terrain crane has a single driver's seat and has a special performance that allows the operator to run the vehicle and operate the crane from the driver's seat.
- Rough terrain cranes are compactly designed to exhibit these special performances (merits), the overall length of the vehicle is set short, the engine is placed behind the vehicle, and all crane operations are controlled by hydraulic pressure. Is done.
- a front axle or a rear axle has a multi-axis structure, and there is a structure on the assumption that an outrigger and a boom are attached to and detached from a vehicle body frame.
- the reason why the front axle or the rear axle has a multi-shaft structure is that the axle weight is limited to a certain level or less.
- the reason why the outriggers and booms can be attached to and detached from the vehicle body frame is due to the laws of the country or region where the large rough terrain crane is used.
- the urea water stored in the urea water tank selectively reduces NOx in the exhaust gas, but has the property of freezing in a low temperature environment and degrading in a high temperature environment. Therefore, when the rough terrain crane is used in a cold region, freezing of the urea water must be avoided. On the other hand, even when used in a high temperature environment, the temperature of the urea water is below a certain level (preferably (Required 2).
- the urea water tank is arranged in an arbitrary space around the vehicle body frame without meeting the above requirements, the piping for supplying urea water to the SCR becomes uselessly long, or the urea water to the urea water tank There is a possibility that the filling operation becomes difficult, and various problems occur such as the urea water being frozen or quality deterioration depending on the environmental temperature. Therefore, a special device is required for the layout of the urea water tank.
- the present invention has been made based on such a background, and is a rough terrain crane in which an outrigger and a boom are detachable, and it is compact and does not impair excellent turning ability, and can be used even in a low temperature environment and a high temperature environment. It is to provide a rough terrain crane in which the urea water tank is laid out in an optimal position so that the function can be performed well.
- a rough terrain crane includes a lower traveling body having a front axle and a rear axle, a boom device disposed above the lower traveling body, a traveling and hydraulic actuator.
- the lower traveling body includes a lower frame, an outrigger that is detachably provided at an end of the lower frame, and an upper rear end portion of the lower frame. And an engine that drives each axle and supplies hydraulic pressure to the hydraulic actuator.
- the rough terrain crane includes a reducing agent tank in which a reducing agent is stored, and an exhaust purification device having a reducing agent supply device and a selective catalytic reduction device disposed downstream of the reducing agent supply device.
- the exhaust purification device is mounted adjacent to the side of the engine.
- the reducing agent tank is disposed in front of the exhaust purification device and in the vicinity of the engine.
- the exhaust purification device since the exhaust purification device is mounted, the exhaust of the rough terrain crane is purified, and it is possible to clear recent severe exhaust gas regulations.
- the reducing agent tank is disposed in front of the exhaust purification device. Therefore, piping from the reducing agent tank to the selective catalytic reduction device via the reducing agent supply device is simplified without increasing the overall length and width of the upper and lower traveling bodies, and the reducing agent is efficiently supplied to the reducing agent supply device. Supplied. Moreover, it is easy to inject the reducing agent. Further, the reducing agent tank is arranged in the vicinity of the engine. Therefore, it is easy to receive the radiant heat of the engine. Furthermore, piping for supplying engine cooling water to the reducing agent tank to heat and keep the reducing agent tank is easy. In addition, since the reducing agent tank is disposed at the above-described position, the layout design of the reducing agent tank is not limited even if the outrigger is detachable.
- the reducing agent tank is disposed at a position adjacent to the exhaust purification device.
- This configuration has the advantage that the piping from the reducing agent tank to the reducing agent supply device is further simplified.
- the reducing agent tank is disposed in a state of being dropped downward from the upper surface of the lower traveling body, and a part of the reducing agent tank is exposed from the upper surface.
- the reducing agent tank includes a protective frame that surrounds and protects the reducing agent tank.
- the reducing agent tank is protected by the protective frame, and this protective frame functions as an operator step.
- the protective frame functions as a step, it is possible to satisfy the requirement for exhaust gas regulation.
- the protective frame includes a heat insulating material surrounding the reducing agent tank.
- the reducing agent tank is easily subjected to radiant heat of the engine, and further, piping for heating and keeping the reducing agent tank by supplying engine cooling water to the reducing agent tank is easy. Moreover, piping for supplying the reducing agent from the reducing agent tank to the selective catalytic reduction device is easy. That is, the reducing agent tank is laid out at the optimum position without sacrificing the small turnability and rough terrain traveling performance of the rough terrain crane and good visibility or visibility in crane operation.
- FIG. 1 is a perspective view of a rough terrain crane according to an embodiment of the present invention.
- FIG. 2 is a rear view of the rough terrain crane according to the embodiment of the present invention.
- FIG. 3 is a perspective view showing the periphery of the exhaust purification device and the diesel engine in the lower traveling body according to the embodiment of the present invention.
- FIG. 4 is a plan view showing the periphery of the exhaust purification device and the diesel engine in the lower traveling body according to the embodiment of the present invention.
- FIG. 5 is a side view of the rough terrain crane according to the embodiment of the present invention, and is a view showing the periphery of the urea water tank.
- FIG. 1 is a perspective view of a rough terrain crane 10 according to an embodiment of the present invention.
- the rough terrain crane 10 includes a lower traveling body 11 and an upper working body 12 disposed on the lower traveling body 11.
- the lower traveling body 11 has a lower frame 13, and a front axle 14 and a rear axle 15 are provided on the lower frame 13.
- a diesel engine 20 (see FIGS. 2 and 3) serving as a drive source for the front axle 14 and the rear axle 15 is mounted on the upper rear end of the lower frame 13.
- the diesel engine 20 includes an engine body (not shown) and an engine cover 49 that covers the engine body.
- the diesel engine 20 including the engine cover 49 is referred to as the diesel engine 20.
- the wheels 16 and 17 of the front axle 14 and the rear axle 15 are driven by a diesel engine 20 via a transmission not shown, and are steered by a hydraulic actuator not shown.
- a front outrigger 18 and a rear outrigger 19 are provided at the front end and the rear end of the lower frame 13, respectively, and are extended to the outside of the vehicle in order to keep the vehicle body stable when the upper work body 12 is in operation.
- the front outrigger 18 is connected to the front end of the lower frame 13 and is detachable from the lower frame 13.
- the rear outrigger 19 is connected to the rear end of the lower frame 13 and is detachable from the lower frame 13.
- pins or other known means are employed for connecting the front outrigger 18 and the rear outrigger 19 to the lower frame 13.
- the lower frame 13 is provided with a hydraulic pump (not shown) that supplies hydraulic pressure to the hydraulic actuator, the hydraulic actuator 29 provided in the upper working body 12, and the hydraulic actuator (not shown) provided in the upper working body 12. ing.
- the hydraulic pump is driven by the diesel engine 20.
- the upper work body 12 includes a swivel base 22 on which a counterweight can be installed at the rear end.
- the swivel base 22 is slidably mounted on the lower frame 13 via a swivel bearing (not shown).
- a boom device 23 is connected to the swivel base 22 via a boom root fulcrum pin (not shown).
- the boom device 23 is supported by a boom root fulcrum pin so as to be raised and lowered.
- the boom device 23 is raised and lowered by the expansion and contraction of the hydraulic actuator 29.
- the telescopic boom 24 incorporates a hydraulic actuator (not shown) and expands and contracts when the hydraulic actuator is operated.
- the boom device 23 includes a winch 27 that is driven by a hydraulic motor (not shown). The boom device 23 can be attached to and detached from the upper working body 12.
- a single control unit 26 for operating the lower traveling body 11 and operating the upper working body 12 is supported by the lower traveling body 11.
- the operation of the lower traveling body 11 is, for example, driving and steering of the wheels 16 and 17 for traveling the rough terrain crane 10.
- the operation of the upper work body 12 is, for example, raising and lowering and extending / contracting (boom operation) of the boom device 23 via the hydraulic actuator 29 and the hydraulic actuator built in the extendable boom 24.
- a feature of the rough terrain crane 10 according to the present embodiment is that an exhaust purification device 30 that will be described in detail later is mounted adjacent to the diesel engine 20, and a urea water tank 50 ( The “reducing agent tank” described in the claims) is laid out as described later.
- FIG. 2 is a rear view of the rough terrain crane 10 according to an embodiment of the present invention.
- the exhaust purification device 30 is a device that receives supply of exhaust gas discharged from the diesel engine 20 and purifies it.
- the exhaust purification device 30 is disposed on the left side as viewed from the rear of the vehicle.
- the exhaust purification device 30 is mounted adjacent to the diesel engine 20.
- the exhaust purification device 30 is provided with a cover 34. The cover 34 prevents the exhaust purification device 30 from being exposed to rain or dust.
- FIG. 3 is a perspective view showing the periphery of the exhaust purification device 30 and the diesel engine 20 in the lower traveling body 11.
- FIG. 4 is a plan view showing the periphery of the exhaust purification device 30 and the diesel engine 20 in the lower traveling body 11.
- the rough terrain crane 10 includes a urea water tank 50 that stores a predetermined reducing agent (urea water in the present embodiment) and an exhaust purification device 30.
- the exhaust purification device 30 includes an oxidation catalyst device (hereinafter referred to as “DOC”) 31 and a selective catalyst reduction device (hereinafter referred to as “SCR”) that reduces nitrogen oxide in exhaust gas via urea water. 32) and a reducing agent supply device (hereinafter referred to as “DRT”) 33 for supplying the urea water to the SCR 32.
- DOC oxidation catalyst device
- SCR selective catalyst reduction device
- DAT reducing agent supply device
- Exhaust gas from the diesel engine 20 is first supplied to the DOC 31 and sequentially passes through the DRT 33 and the SCR 32 and is discharged from the muffler 37 to the atmosphere as exhaust gas.
- the muffler 37 is a device that reduces noise when the exhaust gas is exhausted (a so-called silencer), and does not indicate the SCR 32 or a part thereof.
- the DOC 31 is connected to the exhaust pipe 38 of the diesel engine 20.
- the structure of DOC31 is known.
- the main purpose of the DOC 31 is to treat unburned fuel (HC, etc.) and carbon monoxide (CO) contained in exhaust gas, and to oxidize nitrogen monoxide (NO) in exhaust gas to nitrogen dioxide (NO2). .
- the DOC 31 has a function of oxidizing CO to carbon dioxide (CO 2) and burning HC as the exhaust gas temperature rises.
- the DOC 31 includes a casing, and the outer shape of the casing is a columnar shape.
- the central axis of the DOC 31 is along the longitudinal direction 39 of the lower frame 13, that is, the longitudinal direction of the vehicle. The exhaust discharged from the exhaust pipe 38 flows through the DOC 31 forward in the longitudinal direction 39.
- the SCR 32 is a device that supplies a reducing agent into exhaust to reduce nitrogen oxides (NOx), and finally converts the exhaust into a mixture of nitrogen (N2) and water (H2O) and releases it to the atmosphere. is there.
- the DRT 33 supplies urea water to reduce NOx in the exhaust.
- the DRT 33 injects urea water into the exhaust gas, it is hydrolyzed to produce ammonia (NH3), and NOx is reduced by this NH3.
- NH3 ammonia
- the structure of SCR32 and the structure of DRT33 are also known.
- the DRT 33 includes a cylindrical pipe 42 and a supply valve 43 that is continuous with the cylindrical pipe 42, and introduces urea water from the urea water tank 50.
- the supply valve 43 is connected to the urea water tank 50 via a pipe 53, and injects urea water into the cylindrical pipe 42 at a predetermined pressure.
- the DRT 33 is arranged in series with the DOC 31. That is, the center axis of the DRT 33 coincides with the center axis of the DOC 31, and the DRT 33 is disposed on the front side in the longitudinal direction 39 of the DOC 31 and extends forward.
- the exhaust gas that has passed through the DOC 31 flows along the longitudinal direction 39, flows into the cylindrical pipe 42 of the DRT 33, and receives supply of urea water from the supply valve 43.
- SCR32 is provided with a casing, and its outer shape is formed in a cylindrical shape.
- the central axis of the SCR 32 is along the longitudinal direction 39 of the rough terrain crane 10.
- the SCR 32 is arranged in parallel with the DOC 31 and is connected to a connection pipe 44 formed in a substantially U shape.
- the exhaust gas that has passed through the DRT 33 enters the connecting pipe 44, makes a U-turn, and flows into the SCR 32 disposed downstream of the DRT 33.
- the exhaust gas is purified as described above and discharged as N2 and H2O.
- the urea water tank 50 shown in FIG. 3 is generally made of a material such as a resin or stainless steel having high corrosion resistance against urea water and excellent weather resistance and impact resistance.
- the shape of the urea water tank 50 is not particularly limited, but in the present embodiment, it is formed in a substantially rectangular parallelepiped shape.
- FIG. 5 is a side view of the rough terrain crane 10 according to the embodiment of the present invention, and shows the periphery of the urea water tank 50.
- the urea water tank 50 is disposed behind the front axle and ahead of the rear axle in the rear axle 15.
- the urea water tank 50 is arrange
- the urea water tank 50 is disposed in the vicinity of the left side of the diesel engine 20 as viewed from the rear of the vehicle. That is, the urea water tank 50 is disposed in front of the exhaust purification device 30 and in the vicinity of the diesel engine 20.
- the urea water tank 50 is supported by the support base 54.
- the support base 54 is fixed to the lower frame 13.
- the support base 54 has a box shape with the upper side opened.
- the urea water tank 50 is supported by the support base 54 with the lower part of the urea water tank 50 entering the inside of the support base 54.
- a reinforcing frame 55 fixed to the lower frame 13 is disposed below the support base 54.
- the support base 54 is supported by a reinforcing frame 55.
- the support base 54 is disposed below the upper surface 56 of the lower traveling body 11.
- An opening (not shown) is formed above the support base 54.
- the urea water tank 50 is inserted through the opening, and is disposed in a state of being dropped downward from the upper surface 56.
- the upper part of the urea water tank 50 protrudes above the lower traveling body 11 through the opening and is exposed.
- the urea water tank 50 includes a protective frame 60 that surrounds and protects the urea water tank 50.
- the protective frame 60 covers the urea water tank 50 from above.
- the protective frame 60 is fixed to the upper end 57 (see FIG. 3) of the support base 54 with screws 58.
- the protective frame 60 is reinforced by increasing the thickness of each frame constituting the frame or by bending each frame. Thereby, the protective frame 60 functions as a step on which an operator gets.
- the protective frame 60 may include a heat insulating material that surrounds the urea water tank 50.
- the type of the heat insulating material is not particularly limited, and may be a fiber heat insulating material such as glass wool or a foam heat insulating material such as urethane foam.
- the heat insulating material is attached to the outside of the protective frame 60.
- the heat insulating material may be attached to the inside of the protective frame 60 or may be attached to both the outside and the inside of the protective frame 60.
- a heat insulating material may be attached to the protective frame 60 by means other than sticking.
- the protective frame 60 may be configured to be hollow, and the heat insulating material may be disposed in the internal space of the protective frame 60.
- the urea water tank 50 included in the exhaust purification device 30 is disposed in front of the exhaust purification device 30 as shown in FIG. Therefore, the piping from the urea water tank 50 to the SCR 32 through the DRT 33 is simplified without increasing the overall length and the entire width of the lower traveling body 11 and the upper working body 12, and the urea water is efficiently supplied to the DRT 33.
- the urea water tank 50 is disposed at the position shown in FIG. 5, the urea water tank 50 is disposed at a position facing the outside of the side surface of the vehicle body. Water injection work is also easy.
- the urea water tank 50 is disposed in the vicinity of the left side of the diesel engine 20 as viewed from the rear of the vehicle. Therefore, the urea water tank 50 is susceptible to the radiant heat of the diesel engine 20. Furthermore, piping for supplying the cooling water of the diesel engine 20 to the urea water tank 50 to heat and keep the urea water tank 50 is easy. In addition, since the urea water tank 50 is arranged at the above-described position, even if the outriggers 18 and 19 are detachable as in the rough terrain crane 10 in the present embodiment, the layout design of the urea water tank 50 is possible. There is no limit. As described above, the urea water tank 50 is laid out at the optimum position without sacrificing the small turnability and rough terrain traveling performance of the rough terrain crane 10 and good visibility or visibility in crane operation.
- the protective frame 60 surrounds the urea water tank 50, the urea water tank 50 is protected by the protective frame 60, and the protective frame 60 functions as an operator step. Thereby, for example, the work of removing the boom fulcrum pin connecting the boom device 23 to the lower traveling body 11 is facilitated.
- the protective frame 60 functions as a worker's step, a request for exhaust gas regulation can be satisfied.
- the heat insulating material when the environmental temperature during work is high, or when the radiant heat from the diesel engine 20 is large, the temperature rise of the urea water tank 50 can be suppressed. it can. Thereby, deterioration of urea water is prevented.
- the urea water tank 50 is disposed at the position shown in FIG. 5, but is not limited to this position.
- the urea water tank 50 may be disposed on the right side of the diesel engine 20 from the rear of the vehicle. Further, the urea water tank 50 may be disposed in a space between the front axle 14 and the rear axle 15. In short, the urea water tank 50 may be disposed in another part as long as the operation of injecting the urea water is easy and the position is easily affected by the radiant heat of the diesel engine 20.
- the exhaust purification device 30 is disposed at a position adjacent to the left side of the diesel engine 20 as viewed from the rear of the vehicle as shown in FIG. 2, but is not limited to this position.
- the exhaust purification device 30 may be disposed at a position adjacent to the right side of the diesel engine 20 as viewed from the rear of the vehicle.
- the urea water tank 50 is disposed with a gap between the urea water tank 50 and the exhaust gas purification device 30 as shown in FIG. 5, but the urea water tank 50 is positioned adjacent to the exhaust gas purification device 30. May be arranged. Specifically, the urea water tank 50 may be disposed in the vicinity of the front side of the connection pipe 44. By disposing the urea water tank 50 in the vicinity of the front side of the connecting pipe 44, there is an advantage that the piping from the urea water tank 50 to the DRT 33 is further simplified.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Jib Cranes (AREA)
Abstract
Description
11・・・下部走行体
12・・・上部作業体
13・・・下部フレーム
14・・・フロントアクスル
15・・・リヤアクスル
18・・・フロントアウトリガ
19・・・リヤアウトリガ
20・・・ディーゼルエンジン
23・・・ブーム装置
26・・・操縦部
29・・・油圧アクチュエータ
30・・・排気浄化装置
31・・・DOC(酸化触媒装置)
32・・・SCR(選択的触媒還元装置)
33・・・DRT(還元剤供給装置)
50・・・尿素水タンク
Claims (5)
- フロントアクスル及びリヤアクスルを有する下部走行体と、当該下部走行体の上部に配置されたブーム装置と、走行及び油圧アクチュエータを介したブーム操作を行う単一の操縦部とを有し、上記下部走行体は、下部フレームと、当該下部フレームの端部に着脱自在に設けられたアウトリガと、上記下部フレームの後端部上側に配置され、上記各アクスルを駆動し且つ上記油圧アクチュエータに油圧を供給するエンジンとを有するラフテレーンクレーンであって、
還元剤が貯留された還元剤タンクと、
還元剤供給装置及び当該還元剤供給装置の下流に配置された選択的触媒還元装置を有する排気浄化装置と、を備え、
上記排気浄化装置は、上記エンジンの側方に隣接して搭載され、
上記還元剤タンクは、上記排気浄化装置の前方で且つ上記エンジンの近傍に配置されているラフテレーンクレーン。 - 上記還元剤タンクは、上記排気浄化装置に隣接した位置に配置されている請求項1に記載のラフテレーンクレーン。
- 上記還元剤タンクは上記下部走行体の上面から下方に落とし込まれた状態で配置され、当該還元剤タンクの一部が上記上面から露出している請求項1又は2に記載のラフテレーンクレーン。
- 上記還元剤タンクは、当該還元剤タンクを囲繞し保護する保護枠を備えている請求項1から3のいずれかに記載のラフテレーンクレーン。
- 上記保護枠は、上記還元剤タンクを囲繞する断熱材を備えている請求項4に記載のラフテレーンクレーン。
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KR1020177018703A KR102240594B1 (ko) | 2014-12-19 | 2015-08-17 | 러프 터레인 크레인 |
EP15869593.2A EP3235674B1 (en) | 2014-12-19 | 2015-08-17 | Rough terrain crane |
CN201580068962.3A CN107107738B (zh) | 2014-12-19 | 2015-08-17 | 越野起重机 |
US15/537,772 US10273123B2 (en) | 2014-12-19 | 2015-08-17 | Rough terrain crane |
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JP2014257065A JP6497060B2 (ja) | 2014-12-19 | 2014-12-19 | ラフテレーンクレーン |
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EP (1) | EP3235674B1 (ja) |
JP (1) | JP6497060B2 (ja) |
KR (1) | KR102240594B1 (ja) |
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US11518235B2 (en) | 2018-06-01 | 2022-12-06 | Manitowoc Crane Companies, Llc | Mounting arrangement for engine exhaust aftertreatment system on crane carrier |
CN111762267A (zh) * | 2020-06-15 | 2020-10-13 | 中联重科股份有限公司 | 发动机罩、汽车起重机的底盘总成以及汽车起重机 |
US11970374B2 (en) | 2021-10-04 | 2024-04-30 | Caterpillar Inc. | Pipelayer machine with rear engine configuration |
US11970375B2 (en) | 2021-10-04 | 2024-04-30 | Caterpillar Inc. | Pipelayer machine with forward towing winch configuration |
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JP2003020936A (ja) * | 2001-07-03 | 2003-01-24 | Komatsu Ltd | NOx還元触媒用液体還元剤タンクの配置構造 |
JP4851370B2 (ja) | 2007-03-06 | 2012-01-11 | 日立建機株式会社 | 建設機械 |
WO2009001587A1 (ja) * | 2007-06-26 | 2008-12-31 | Hitachi Construction Machinery Co., Ltd. | 自走式建設機械 |
JP5071792B2 (ja) * | 2007-09-25 | 2012-11-14 | 独立行政法人産業技術総合研究所 | 開口収差補正レンズ |
JP4928474B2 (ja) * | 2008-01-08 | 2012-05-09 | 日立建機株式会社 | 建設機械のNOx低減装置の配設構造 |
JP5054613B2 (ja) | 2008-05-16 | 2012-10-24 | 三菱ふそうトラック・バス株式会社 | エンジンの排気ガス浄化装置 |
WO2014061528A1 (ja) * | 2012-10-19 | 2014-04-24 | 日立建機株式会社 | ホイール式作業車両 |
JPWO2014188997A1 (ja) * | 2013-05-22 | 2017-02-23 | 日立建機株式会社 | 建設機械 |
DE112013000260B4 (de) * | 2013-12-27 | 2016-10-20 | Komatsu Ltd. | Arbeitsfahrzeug |
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JP2009040602A (ja) * | 2007-08-10 | 2009-02-26 | Tadano Ltd | 移動式クレーン |
JP2009079422A (ja) * | 2007-09-26 | 2009-04-16 | Kobelco Contstruction Machinery Ltd | 建設機械 |
JP2013002082A (ja) * | 2011-06-14 | 2013-01-07 | Hitachi Constr Mach Co Ltd | 建設機械 |
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CN107107738B (zh) | 2020-06-09 |
JP2016117347A (ja) | 2016-06-30 |
EP3235674A4 (en) | 2018-07-18 |
CN107107738A (zh) | 2017-08-29 |
JP6497060B2 (ja) | 2019-04-10 |
KR20170099931A (ko) | 2017-09-01 |
EP3235674A1 (en) | 2017-10-25 |
KR102240594B1 (ko) | 2021-04-15 |
EP3235674B1 (en) | 2021-01-13 |
US20180273351A1 (en) | 2018-09-27 |
US10273123B2 (en) | 2019-04-30 |
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