WO2016098383A1 - 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
- WO2016098383A1 WO2016098383A1 PCT/JP2015/073017 JP2015073017W WO2016098383A1 WO 2016098383 A1 WO2016098383 A1 WO 2016098383A1 JP 2015073017 W JP2015073017 W JP 2015073017W WO 2016098383 A1 WO2016098383 A1 WO 2016098383A1
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- WIPO (PCT)
- Prior art keywords
- rough terrain
- exhaust
- terrain crane
- purification device
- traveling body
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
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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
- B66C15/00—Safety gear
-
- 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
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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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- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- 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
Definitions
- the present invention relates to a rough terrain crane equipped with an exhaust emission control device and an elevating step, and more particularly, to a layout of these for a vehicle body.
- 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 or a control unit, and has a special performance that allows an operator to run the vehicle and operate a crane mounted on the vehicle from the driver's seat.
- the rough terrain crane is designed to be compact in order to exhibit such special performance. For this reason, the overall length of the vehicle body is designed to be short, an engine (generally a diesel engine) is disposed at the rear of the vehicle body, and an elevating step, an exhaust purification device described later, and the like are disposed around the fender (see, for example, Patent Document 1).
- Diesel engine exhaust contains particulate matter (Particulate Matter, hereinafter referred to as “PM”), nitrogen oxide (hereinafter referred to as “NOx”), and the like.
- the exhaust emission control device prevents these substances from being released into the atmosphere and prevents the atmosphere from being polluted.
- 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
- an exhaust purification device having a required specification is configured by combining them (see, for example, Patent Document 2).
- JP 2012-149535 A Japanese Patent No. 4286888
- 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 present invention has been made based on such a background, and is a large-sized rough terrain crane in which an outrigger and a boom are detachable.
- the steps are to provide a rough terrain crane with a compact layout.
- 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.
- An oxidation catalyst device connected to an exhaust pipe extending from the engine and fed with exhaust gas, a reducing agent supply device disposed downstream of the oxidation catalyst device, and selective catalytic reduction disposed downstream of the reducing agent supply device
- An exhaust purification device having a device is mounted.
- the oxidation catalyst device, the reducing agent supply device, and the selective catalyst reduction device are arranged in parallel on a virtual horizontal plane separated from the upper surface of the lower traveling body by a predetermined distance, and the raising and lowering step is performed on the lower traveling body. It arrange
- the counterweight provided in the boom device also increases in size, so the space where the exhaust purification device and the lifting step are to be arranged, that is, the upper surface of the lower traveling body and the counterweight The space between the lower surface becomes narrower.
- the oxidation catalyst device, the reducing agent supply device, and the selective catalyst reduction device are arranged in parallel on the virtual horizontal plane. The dimension in the height direction of is suppressed. Therefore, the predetermined distance can be easily secured in the layout design of the lifting step, and the lifting step can be compactly disposed on the upper surface of the lower traveling body together with the exhaust purification device.
- the reductant supply device is arranged in series along the longitudinal direction of the oxidation catalyst device or the selective catalyst reduction device and the lower frame, and the oxidation catalyst device and the selective catalyst reduction device are: It is preferable that they are arranged in parallel so as to face each other along the short direction of the lower frame.
- the oxidation catalyst device and the selective catalyst reduction device are arranged in parallel, but since the reducing agent supply device is joined in series along the longitudinal direction with the oxidation catalyst device or the selective catalyst reduction device, the exhaust gas is exhausted.
- the dimensions in the vehicle width direction required for mounting the purification device can also be suppressed.
- the exhaust pipe is inclined at an angle of 30 ° or less with respect to the exhaust purification device with respect to a horizontal line.
- the exhaust purification device and the lifting / lowering step are compactly arranged in a stacked state between the upper surface of the lower traveling body and the lower surface of the counterweight, even with a large rough terrain crane, The boom attaching / detaching function and the compact and excellent turning performance are not impaired.
- 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 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. 6 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 lifting step.
- 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 having a counterweight 28 (see FIG. 2) at the rear end for stable work of the upper work body 12.
- 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), and the work is moved up and down when the winch 27 is operated.
- 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 is mounted adjacent to the diesel engine 20 in a layout that will be described in detail later, and an elevating step 46 that will be described later travels in the lower part. It is a point arranged in a gap 47 formed between the upper surface 56 of the body 11 and the exhaust purification device 30.
- 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.
- FIG. 5 is a side view showing the vicinity of the exhaust purification device 30 and the diesel engine 20 in the lower traveling body 11.
- the exhaust purification device 30 includes an oxidation catalyst device (hereinafter referred to as “DOC”) 31, a urea water tank 50 storing a predetermined reducing agent (urea water in the present embodiment), and urea water.
- DOC oxidation catalyst device
- SCR selective catalytic reduction device
- DVT 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. That is, the DRT 33 is arranged downstream of the DOC 31 and the SCR 32 is arranged downstream of the DRT 33.
- 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 an exhaust pipe 38 extending from the diesel engine 20.
- the end of the exhaust pipe 38 on the DOC 31 side is higher than the end of the exhaust pipe 38 on the diesel engine 20 side.
- the exhaust pipe 38 is inclined with respect to the exhaust purification device 30 with respect to the horizontal line 41.
- the inclination angle is 30 °.
- the angle of the said inclination should just be 30 degrees or less.
- 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 along the DOC 31 and the longitudinal direction 39. 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, the DOC 31, and the DRT 33 are arranged in parallel on a virtual horizontal plane 45 (see FIG. 5) extending in the longitudinal direction 39 and the lateral direction of the vehicle, that is, the short direction 40 of the lower frame 13.
- the virtual horizontal plane 45 is located above the upper surface 56 (see FIG. 6) of the lower traveling body 11 with a predetermined distance in the vertical direction.
- the vertical direction is a direction orthogonal to the longitudinal direction 39 and the short direction 40.
- the SCR 32 is arranged in parallel so as to face the DOC 31 along the short direction 40, and both are connected by a connecting 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. 6 is a side view of the rough terrain crane 10 according to the embodiment of the present invention, and shows the periphery of the lifting step 46.
- 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.
- the urea water tank 50 is supported by a support base 54 fixed to the lower frame 13.
- the rough terrain crane 10 is provided with a urea water tank 50 in order to make it easy to supply urea water to the urea water tank 50 and to easily access the boom root fulcrum pin when the boom is disassembled.
- the elevating step 46 is made of a metal material such as aluminum.
- the step 46 for raising / lowering is obtained by fixing a horizontal member serving as a scaffold to two vertical members arranged at intervals with a fixed interval.
- the elevating step 46 may be configured to be extendable.
- the elevating step 46 is disposed on the upper surface 56 of the lower traveling body 11. Further, at least a part of the ascending / descending step 46 is disposed directly below the exhaust purification device 30. That is, the ascending / descending step 46 is arranged in a gap 47 formed between the upper surface 56 of the lower traveling body 11 and the exhaust purification device 30.
- the structure of the elevating step 46 is known and is connected to the upper surface 56 via a pivot shaft.
- the ascending / descending step 46 is rotatable about a pivot shaft, and can be projected to the side of the lower traveling body 11.
- the step 46 for raising / lowering can be bent in the intermediate part 55, and will be in the state leaned against the lower traveling body 11 by bending.
- the counterweight 28 provided in the boom device 23 is also enlarged, so that the space in which the exhaust purification device 30 and the lifting step 46 are to be arranged, that is, the lower portion A space between the upper surface 56 of the traveling body 11 and the lower surface 35 (see FIG. 6) of the counterweight 28 becomes narrower.
- the dimension of the vertical direction of the exhaust gas purification apparatus 30 comprised by these, ie, the height direction of the lower traveling body 11, is comprised. Is suppressed.
- the distance between the virtual horizontal surface 45 and the upper surface 56 of the lower traveling body 11 is easily secured in the layout design of the lifting and lowering step 46, and the lifting step 46 is compact on the upper surface 56 of the lower traveling body 11 together with the exhaust purification device 30. Can be arranged.
- the DOC 31 and the SCR 32 are arranged in parallel.
- the DRT 33 is joined in series along the DOC 31 and the longitudinal direction 39, the vehicle width direction necessary for mounting the exhaust purification device 30 is provided. The size of can also be suppressed.
- the exhaust pipe 38 is inclined, so that the exhaust purification device 30 connected to the exhaust pipe 38 is prevented from projecting in the vehicle width direction. That is, the dimension in the vehicle width direction required for mounting the exhaust purification device 30 is further suppressed.
- 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 DRT 33 is arranged in series along the DOC 31 and the longitudinal direction 39, but may be arranged in series along the SCR 32 and the longitudinal direction 39. Specifically, the DRT 33 may be disposed downstream of the connecting pipe 44 and upstream of the SCR 32 and in parallel with the DOC 31. The exhaust gas that has passed through the DOC 31 may flow into the DRT 33 via the connection pipe 44.
- the DOC 31 and the SCR 32 are arranged in parallel so as to face each other along the short direction 40, but may not face each other along the short direction 40.
- the DOC 31 and the SCR 32 may be arranged in parallel so as to face each other along the longitudinal direction 39.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Transportation (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Body Structure For Vehicles (AREA)
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
11・・・下部走行体
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)
38・・・エキゾーストパイプ
45・・・仮想水平面
46・・・昇降用ステップ
Claims (3)
- 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、昇降用ステップとを有するラフテレーンクレーンであって、
上記エンジンから延びるエキゾーストパイプに連結され、排気が送給される酸化触媒装置、当該酸化触媒装置の下流に配置された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とを有する排気浄化装置が搭載され、
上記酸化触媒装置、還元剤供給装置及び選択的触媒還元装置は、上記下部走行体の上面と所定距離だけ離間した仮想水平面上に並列配置されており、
上記昇降用ステップは、上記下部走行体の上面と上記排気浄化装置との間に形成される隙間に配置されているラフテレーンクレーン。 - 上記還元剤供給装置は、上記酸化触媒装置又は上記選択的触媒還元装置と上記下部フレームの長手方向に沿って直列配置されると共に、上記酸化触媒装置及び上記選択的触媒還元装置は、上記下部フレームの短手方向に沿って対向するように並列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。
- 上記エキゾーストパイプは、上記排気浄化装置に対して水平線を基準として30°以下の角度で傾斜している請求項1又は2に記載のラフテレーンクレーン。
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KR1020177018833A KR102299729B1 (ko) | 2014-12-19 | 2015-08-17 | 러프 터레인 크레인 |
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