WO2014168072A1 - Engin de chantier - Google Patents

Engin de chantier Download PDF

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Publication number
WO2014168072A1
WO2014168072A1 PCT/JP2014/059864 JP2014059864W WO2014168072A1 WO 2014168072 A1 WO2014168072 A1 WO 2014168072A1 JP 2014059864 W JP2014059864 W JP 2014059864W WO 2014168072 A1 WO2014168072 A1 WO 2014168072A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxidation catalyst
soot filter
exhaust gas
construction machine
divided portion
Prior art date
Application number
PCT/JP2014/059864
Other languages
English (en)
Japanese (ja)
Inventor
篤人 藤井
吉田　肇
野口　修平
Original Assignee
日立建機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立建機株式会社 filed Critical 日立建機株式会社
Priority to JP2015511234A priority Critical patent/JP6200943B2/ja
Publication of WO2014168072A1 publication Critical patent/WO2014168072A1/fr

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Classifications

    • 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
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • 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
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • 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

Definitions

  • the present invention relates to a construction machine such as a hydraulic excavator provided with an exhaust gas aftertreatment device that includes a plurality of divided portions each forming a cylindrical body and fitted to each other.
  • Patent Document 1 There is one disclosed in Patent Document 1 as this type of prior art.
  • This prior art is, for example, a hydraulic excavator, and the hydraulic excavator includes an exhaust gas purification device that purifies exhaust gas of an engine, that is, an exhaust gas aftertreatment device.
  • the exhaust gas purifying apparatus according to the prior art includes a muffler first divided part disposed on the upstream side of the engine exhaust gas flow, a muffler second divided part disposed on the downstream side of the exhaust gas flow, and these mufflers.
  • first division part and the muffler second division part It is arranged between the first division part and the muffler second division part, is detachably connected to each of the muffler first division part and the muffler second division part, and exhaust particulate (PM) contained in the exhaust gas of the engine And a post-processing filter (DPF) to be removed.
  • PM particulate
  • DPF post-processing filter
  • the post-processing filter When cleaning or replacing the post-processing filter, the post-processing filter is rotated around its axis from the first muffler first divided portion and the second muffler divided portion, and then the post-processing filter is turned to constitute the vehicle body. The work of pulling up above the body is performed.
  • the post-processing filter when installing a post-cleaning filter after cleaning or a new post-processing filter, the post-processing filter is lowered from the upper position of the revolving structure, and then the post-processing is performed on the muffler first division unit and the muffler second division unit. The operation of aligning the filter and rotating the post-processing filter about its axis to engage the muffler first divided portion and the muffler second divided portion is performed.
  • the above-described prior art is effective for a relatively large construction machine that can form an opening in the part of the engine room located above the post-processing filter that can lower or lift the post-processing filter.
  • a small machine such as a mini excavator
  • an opening that allows the post-processing filter to be lowered or pulled up is formed in the upper part of the engine chamber in which the exhaust gas purification device, that is, the exhaust gas post-processing device is accommodated, due to the design of the fuselage.
  • the exhaust gas purification device that is, the exhaust gas post-processing device is accommodated
  • the post-processing filter when the post-processing filter is attached, the post-processing filter is lowered into the engine compartment, and then the complicated alignment work and the post-processing for each of the muffler first division unit and the muffler second division unit are performed. A complicated engagement operation for rotating the filter around its axis is required. Further, when removing the post-processing filter, the post-processing filter is rotated about its axis to disengage the muffler first divided portion and the muffler second divided portion, and the post-processing filter is pulled up to the upper portion of the engine chamber. Complicated work is required. That is, the prior art has a problem that the work of attaching and removing the exhaust gas purification device, that is, the exhaust gas aftertreatment device, becomes complicated.
  • an exhaust gas aftertreatment device having a plurality of divided parts and having a plurality of divided parts fitted therein is known, but such a plurality of divided parts are fitted. Even in a construction machine having an exhaust gas aftertreatment device in a combined form, there is a problem similar to that described above.
  • the present invention has been made based on the above-described situation in the prior art, and the object thereof is applicable to a small-sized construction machine, and an exhaust gas aftertreatment device having a plurality of division parts fitted to each other is attached and detached. It is an object of the present invention to provide a construction machine that can easily perform the above.
  • the present invention provides a vehicle body, a working device attached to the vehicle body, an engine chamber provided in the vehicle body, an engine disposed in the engine chamber, and the engine chamber.
  • An exhaust gas aftertreatment device that purifies the exhaust gas of the engine, and the exhaust gas aftertreatment device forms a cylindrical body, and forms a cylindrical body and is fitted with the first divided portion.
  • sliding means for sliding the second divided portion in a direction away from the first divided portion and in a direction approaching the first divided portion, An opening formed on a side portion of the vehicle body and allowing the second divided portion to be inserted into the engine chamber and the second divided portion to be taken out from the engine chamber to the outside of the vehicle body; And a door that allows the opening to be opened and closed.
  • the door attached to the side portion of the vehicle body is opened to open the opening formed in the side portion of the vehicle body.
  • the first divided portion is inserted from the opening and fixed at a predetermined position.
  • a 2nd division part is inserted from an opening part, and this 2nd division part is slid in the direction approaching a 1st division part by a slide means.
  • the door attached to the side portion of the vehicle body is opened and the opening formed in the side portion of the vehicle body is opened. Is done.
  • the second dividing portion is slid in the direction away from the first dividing portion by the sliding means. Thereby, a fitting with a 1st division part and a 2nd division part can be easily released. In this state, the second divided portion is taken out from the opening formed in the side portion of the vehicle body.
  • the second divided portion of the exhaust gas aftertreatment device can be attached and detached through the opening formed in the side portion of the vehicle body.
  • the exhaust gas aftertreatment device can be attached and removed without requiring an opening that is lowered into the room or pulled up from the engine room. Therefore, the present invention is also applicable to a small construction machine having no room for forming the opening as described above above the engine room.
  • the second dividing portion is slid in the direction approaching the first dividing portion by the sliding means, and the first dividing portion and the second dividing portion are easily fitted without requiring any special alignment work.
  • the fitting can be easily released by sliding the second divided portion away from the first divided portion.
  • the present invention can perform the operation of attaching and detaching the exhaust gas aftertreatment device from the side of the vehicle body. Therefore, in a small construction machine, an operator standing on the ground contact surface of the construction machine can perform the exhaust gas aftertreatment. It is also possible to perform installation and removal operations of the device. By these, this invention can perform the attachment and removal operation
  • the present invention is the above invention, wherein the exhaust gas aftertreatment device includes a third dividing unit connected to the second dividing unit, the third dividing unit in a direction away from the second dividing unit, and Another slide means for sliding in a direction approaching the second divided portion is provided.
  • the side door of the vehicle body is opened and, for example, the first divided portion is inserted through the opening and fixed at a predetermined position.
  • the third divided portion is inserted from the opening, and this third divided portion is slid in a direction away from the first divided portion by another sliding means.
  • the second divided portion is inserted from the opening and is positioned between the first divided portion and the second divided portion, and the second divided portion is slid in a direction approaching the first divided portion by the sliding means.
  • the third dividing unit is slid in a direction approaching the second dividing unit by another sliding means.
  • the third divided portion is slid in a direction away from the second divided portion by another sliding means.
  • the second dividing unit is slid in the direction away from the first dividing unit by the sliding means.
  • the fitting of the first divided portion and the second divided portion can be easily released.
  • the second divided portion is taken out from the opening formed in the side portion of the vehicle body.
  • the present invention is characterized in that, in the above invention, the first divided portion is made of an oxidation catalyst, the second divided portion is made of a soot filter, and the third divided portion is made of a silencer.
  • a first base fixed to the oxidation catalyst and holding the oxidation catalyst a second base fixed to the soot filter and holding the soot filter, and the silencer fixed to the silencer.
  • a third pedestal for holding the first pedestal, a hole into which a bolt for fixing the first pedestal is inserted, and a longitudinal direction of the oxidation catalyst, and the second pedestal A first elongated hole into which a bolt for slidably fixing is inserted, and a second elongated hole provided in the same direction as the longitudinal direction of the oxidation catalyst and into which a bolt for slidably fixing the third pedestal is inserted. It is characterized by having a provided bracket.
  • the construction machine comprises a mini excavator having a revolving body that forms the vehicle body and to which the working device is attached, and a counterweight provided at a rear portion of the revolving body.
  • the length of the first long hole is set to a dimension larger than the fitting dimension of the oxidation catalyst and the soot filter
  • the length of the second long hole is larger than the fitting dimension, Less than the dimension corresponding to the distance between the rear end portion of the silencer and the counterweight portion facing the rear end portion when the soot filter is fitted to the oxidation catalyst and the silencer is connected to the soot filter. It is characterized by the fact that it is set to the size of.
  • a construction machine has a form in which a first divided part and a second divided part that form a cylindrical body are fitted to each other, and is applied to a construction machine provided with an exhaust gas aftertreatment device disposed in an engine room
  • a sliding means that slides the second divided portion in a direction away from and closer to the first divided portion and a side portion of the vehicle body, and inserting the second divided portion into the engine compartment;
  • the opening part which enables taking out from the engine room of the 2nd division part to the exterior of a vehicle body, and the door which is provided in the side part of a vehicle body and enables opening and closing of an opening part is comprised.
  • the present invention can also be applied to a small construction machine such as a mini excavator, and can easily attach and remove the exhaust gas aftertreatment device. That is, the present invention can increase the number of construction machines that can be installed with an exhaust gas aftertreatment device having a plurality of divided portions that are fitted to each other, and can also be used for attaching and removing the exhaust gas aftertreatment device. Workability can be improved as compared with the prior art.
  • FIG. 1 It is a principal part side view of the mini excavator which comprises one Embodiment of the construction machine which concerns on this invention. It is a top view of the mini excavator shown in FIG. It is a perspective view showing an exhaust gas aftertreatment device with which a mini excavator concerning this embodiment is equipped. It is a perspective view which shows the state which removed the V-shaped clamp from the waste gas aftertreatment apparatus shown in FIG. It is a perspective view which shows the V-shaped clamp with which this embodiment is equipped. It is a perspective view which shows the principal part of the V-shaped clamp shown in FIG. It is principal part sectional drawing which shows the state which fastened the oxidation catalyst and the soot filter with the V-shaped clamp shown in FIG.
  • the construction machine according to the present embodiment is composed of, for example, a mini excavator which is a small construction machine.
  • the mini excavator includes a traveling body 1, a revolving body 2 disposed on the traveling body 1, a working device 3 that is attached to the revolving body 2 so as to be rotatable in the vertical direction, and that performs excavation work of earth and sand. It has.
  • the traveling body 1 and the revolving body 2 constitute a vehicle body.
  • a driver's cab 4 is arranged on the revolving unit 2, and a counterweight 5 for securing a weight balance is attached to the rear part of the revolving unit 2.
  • An engine room 6 is arranged at a position on the revolving body 2 between the cab 4 and the counterweight 5.
  • an engine 7 is disposed that drives a hydraulic pump that supplies pressure oil for running the traveling body 1, turning the revolving body 2, operating the work device 3, and the like.
  • An exhaust gas aftertreatment device 10 for purifying exhaust gas of the engine 7 is disposed in the engine chamber 6.
  • the exhaust gas after-treatment device 10 is arranged on the upstream side of the exhaust gas of the engine 7 and makes it easy to burn the first divided portion that forms the cylinder, for example, soot contained in the exhaust gas.
  • an oxidation catalyst 11 having a function of purifying exhaust gas.
  • the exhaust gas aftertreatment device 10 is disposed downstream of the oxidation catalyst 11 and forms a cylindrical body and is fitted with the oxidation catalyst 11.
  • a soot filter that collects and regenerates soot in the exhaust gas. 12 is included.
  • the exhaust gas aftertreatment device 10 is disposed downstream of the soot filter 12, and includes a third divided portion that forms a cylindrical body and is connected to the soot filter 12, for example, a silencer 13 that silences exhaust noise.
  • the mini excavator includes a slide means for sliding the soot filter 12 in a direction away from the oxidation catalyst 11 and a direction approaching the oxidation catalyst 11, a direction in which the silencer 13 is separated from the soot filter 12, and a soot filter. 12 and another sliding means for sliding in the direction approaching 12.
  • the oxidation catalyst 11 and the soot filter 12, and the soot filter 12 and the silencer 13 are each fastened by a V-shaped clamp 20.
  • the V-shaped clamp 20 includes a pair of clamp bodies 20 a and 20 b that are curved, a connecting portion 20 c that connects these clamp bodies 20 a and 20 b, and the clamp bodies 20 a and 20 b. And a fastening portion 20d to be fastened.
  • the flange portion 11a of the oxidation catalyst 11 and the flange portion 12a of the soot filter 12 opposed to the flange portion 11a are integrally fixed by being fastened by the V-shaped clamp 20.
  • the soot filter 12 and the silencer 13 are integrally formed by fastening another flange portion 12b of the soot filter 12 and the flange portion 13a of the silencer 13 facing the flange portion 12b by the V-shaped clamp 20. Fixed.
  • the present embodiment is fixed to the lower part of the oxidation catalyst 11, fixed to the lower part of the soot filter 12 and the first pedestal 21 that holds the oxidation catalyst 11.
  • a second pedestal 22 to be held and a third pedestal 23 fixed to the lower part of the silencer 13 and holding the silencer 13 are provided.
  • the first pedestal 21 is formed with a pair of holes 21 a and 21 b into which the bolts 31 a and 31 b are respectively inserted, and the bolts 32 a and 32 b are also inserted into the second pedestal 22.
  • a pair of holes 22a and 22b are formed, and a pair of holes 23a and 23b into which the bolts 33a and 33b are inserted are also formed in the third pedestal 23.
  • the present embodiment includes a bracket 24 that is disposed in the engine compartment 6 and formed in a flat plate shape, for example, along a horizontal plane.
  • the bracket 24 includes a pair of holes 41a and 41b into which the above-described bolts 31a and 31b for fixing the first pedestal 21 are inserted, and the above-described bolts 32a and 32b for slidably fixing the second pedestal 22, respectively.
  • a pair of first long holes 42a and 42b to be inserted and a pair of second long holes 43a and 43b into which the above-described bolts 33a and 33b for slidably fixing the third base 23 are respectively provided are provided.
  • the first long holes 42 a and 42 b and the second long holes 43 a and 43 b are provided in the same direction as the longitudinal direction of the oxidation catalyst 11.
  • the length of the first elongated holes 42a and 42b is set to a dimension larger than the fitting dimension a of the oxidation catalyst 11 and the soot filter 12.
  • the length of the second elongated holes 43a and 43b is not less than the above-described fitting dimension a, and the oxidation catalyst 11 is fitted to the soot filter 21 and the silencer 13 is connected to the soot filter 12. Is set to a dimension less than the dimension corresponding to the distance c between the rear end portion of the silencer 13 and the portion of the counterweight 5 facing the rear end portion.
  • the soot filter 12 is moved away from the oxidation catalyst 11 by the pair of holes 22a and 22b of the second base 22, the pair of first long holes 42a and 42b of the bracket 24, and the bolts 32a and 32b.
  • the above-described sliding means is configured to slide in the direction approaching the oxidation catalyst 11.
  • the silencer 13 is moved away from the soot filter 12 by the pair of holes 23a and 23b of the third pedestal 23, the pair of second long holes 43a and 43b of the bracket 24, and the bolts 33a and 33b.
  • the above-described another sliding means is configured to slide in the direction approaching the soot filter 12.
  • the soot filter 12 formed in the side portion of the revolving structure 2 constituting the vehicle body and disposed in the engine chamber 6 is taken out of the revolving structure 2.
  • the door 16 is attached to the swing body 2 by a bolt 14, and can be rotated around a hinge mechanism by removing the bolt 14.
  • the door 16 also serves as an exterior plate of the mini excavator.
  • the bolt 14 shown in FIG. 1 that fixes the door 16 on the side of the swivel body 2 to the closed state is removed, and the door 16 is opened.
  • the oxidation catalyst 11 is inserted from the opening 15 on the side of the revolving unit 2, and the pair of holes 21 a and 21 b of the first base 21 fixed to the oxidation catalyst 11 is replaced with the pair of holes 41 a and 41 b of the bracket 24.
  • the bolts 31 a and 31 b are inserted into the holes 21 a and 21 b and the holes 41 a and 41 b, respectively, and the bolts 31 a and 31 b are fastened to fix the first base 21 to the bracket 24. That is, the oxidation catalyst 11 is fixed at a predetermined location.
  • the silencer 13 is inserted from the opening 15, and the pair of holes 23 a and 23 b of the third pedestal 23 fixed to the silencer 13 are matched with the pair of second long holes 43 a and 43 b of the bracket 24, respectively.
  • the bolts 33a and 33b are inserted into the holes 23a and 23b and the second elongated holes 43a and 43b, respectively.
  • the bolts 33a and 33b are loosely tightened, and the bolts 33a and 33b are closest to the counterweight 5, for example.
  • the third pedestal 23 is slid until it is positioned at the ends of the two long holes 43a and 43b. That is, the silencer 13 is slid in a direction away from the oxidation catalyst 11 by another slide means.
  • the soot filter 12 is inserted into the space between the oxidation catalyst 11 and the silencer 13 through the opening 15, and the pair of holes 22 a and 22 b of the second pedestal 22 fixed to the soot filter 12 are attached to the bracket 24.
  • the bolts 32a and 32b are inserted into the holes 22a and 22b and the first slots 42a and 42b, respectively, and the bolts 32a and 32b are loosely tightened.
  • the bolts 32a and 32b are moved in the first elongated holes 42a and 42b until the soot filter 12 is properly fitted to the oxidation catalyst 11, and the second pedestal 22 is slid.
  • the bolts 32 a and 32 b are fastened to fix the second pedestal 22 to the bracket 24. That is, the soot filter 12 is slid in the direction approaching the oxidation catalyst 11 by the sliding means, and the oxidation catalyst 11 and the soot filter 12 are fitted.
  • the bolts 33a and 33b are moved in the second elongated holes 43a and 43b, and the third pedestal 23 is slid.
  • the bolts 33 a and 33 b are fastened to fix the third pedestal 23 to the bracket 24. That is, the silencer 13 is slid in a direction approaching the soot filter 12 by another sliding means.
  • the flange portion 11a of the oxidation catalyst 11 and the flange portion 12a of the soot filter 12 are fastened by the V-shaped clamp 20, and the flange portion 12b of the soot filter 12 and the flange portion 13a of the silencer 13 are V-shaped clamped. Fasten at 20. Thereafter, the door 16 is closed, and the door 16 is fixed to the closed state by the bolt 14.
  • the soot filter 12 of the exhaust gas aftertreatment device 10 is cleaned or removed for replacement, for example, first, the flange portion 11a of the oxidation catalyst 11 and the flange portion 12a of the soot filter 12 are fastened.
  • the clamp 20 is removed, and another V-shaped clamp 20 that fastens the flange portion 12b of the soot filter 12 and the flange portion 13a of the silencer 13 is removed.
  • the bolts 33a and 33b that fix the third pedestal 23 to the bracket 24 are loosened, and the bolts 33a and 33b are moved until the bolts 33a and 33b are positioned at the ends of the second elongated holes 43a and 43b closest to the counterweight 5, for example.
  • Slide the pedestal 23 That is, the silencer 13 is slid in a direction away from the soot filter 12 by another sliding means.
  • the bolts 32a and 32b fixing the second pedestal 22 to the bracket 24 are loosened, and the bolts 32a and 32b are moved within the first long holes 42a and 42b until the soot filter 12 is completely separated from the oxidation catalyst 11.
  • the second pedestal 22 is slid. That is, the soot filter 12 is slid in the direction away from the oxidation catalyst 11 by the sliding means. As a result, a gap is formed between the soot filter 12 and the oxidation catalyst 11, and a gap is formed between the silencer 13 and the engagement between the oxidation catalyst 11 and the soot filter 12 can be easily released.
  • the soot filter 12 that has been cleaned or the soot filter 12 that is newly replaced is attached, a procedure reverse to that described above is performed. That is, the corresponding soot filter 12 is inserted into the space between the oxidation catalyst 11 and the silencer 13 through the opening 15, and the pair of holes 22 a and 22 b of the second pedestal 22 of the soot filter 12 are inserted into the pair of second brackets 24. 1 so that the bolts 32a and 32b are inserted into the holes 22a and 22b and the first slots 42a and 42b, and the bolts 32a and 32b are loosely tightened. Slide until fitted to the oxidation catalyst 11. The second pedestal 22 is fixed to the bracket 24 by fastening the bolts 32 a and 32 b in the fitted state.
  • the silencer 13 is slid until it abuts against the soot filter 12, and the bolts 33 a and 33 b are fastened in the abutted state to fix the third pedestal 23 to the bracket 24.
  • the flange portion 11a of the oxidation catalyst 11 and the flange portion 12a of the soot filter 12 are fastened by a V-shaped clamp 20, and the flange portion 12b of the soot filter 12 and the flange portion 13a of the silencer 13 are fastened by another V-shaped clamp 20. Conclude. Thereafter, the door 16 is closed, and the door 16 is fixed to the closed state by the bolt 14.
  • the attachment and detachment work of the soot filter 12 of the exhaust gas aftertreatment device 10 can be performed through the opening 15 formed in the side portion of the revolving unit 2.
  • the exhaust gas aftertreatment device 10 can be attached and removed without requiring an opening for lowering or lifting the soot filter 12 from above the engine chamber 6 into the engine chamber 6. Therefore, the present invention can also be applied to a small construction machine such as the mini excavator having no room for forming the opening as described above above the engine room 6. Thereby, the kind of construction machine which can install exhaust gas aftertreatment device 10 can be increased.
  • the soot filter 12 is slid in the direction approaching the oxidation catalyst 11 by the sliding means including the pair of bolts 32a and 32b and the first elongated holes 42a and 42b, and the oxidation catalyst 11 and the soot filter 12 are thereby moved. Can be easily fitted without requiring a special alignment operation, and the fitting can be easily released by sliding the soot filter 12 away from the oxidation catalyst 11. Furthermore, in this embodiment, since the exhaust gas aftertreatment device 10 can be attached and detached from the side of the revolving structure 2, in a small construction machine such as the mini excavator, the contact of the construction machine is possible. An operator standing on the ground can attach and remove the exhaust gas aftertreatment device 10.
  • the present embodiment it is possible to easily attach and remove the exhaust gas aftertreatment device 10 having a plurality of divided parts, for example, the oxidation catalyst 11, the soot filter 12, and the silencer 13 that are fitted to each other.
  • the workability of attaching and detaching the processing apparatus 10 can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention porte sur un engin de chantier dans lequel un dispositif de post-traitement de gaz d'échappement, qui est approprié pour un petit engin de chantier et qui comprend une pluralité de parties de séparation qui s'ajustent les unes aux autres, peut être facilement attaché et détaché. Dans l'engin de chantier selon la présente invention, le dispositif de post-traitement de gaz d'échappement (10) comprend un catalyseur d'oxydation (11), qui est une première partie de séparation, et un filtre à suie (12) qui est une seconde partie de séparation qui s'assemble au catalyseur d'oxydation (11). L'engin de chantier est conçu de manière à comporter : un moyen de coulissement qui contient des boulons (32a, 32b) et des premiers trous allongés (42a, 42b) qui permettent d'extraire le filtre à suie (12) du catalyseur d'oxydation (11) et de le ramener vers celui-ci par un mouvement de coulissement ; une ouverture (15) qui est formée sur une partie latérale d'un corps rotatif (2) et qui permet d'introduire le filtre à suie (12) dans une chambre de moteur (6) et de retirer le filtre à suie (12) de la chambre de moteur (6) vers l'extérieur du corps rotatif (2) ; une porte (16) qui permet d'ouvrir et de fermer l'ouverture (15).
PCT/JP2014/059864 2013-04-12 2014-04-03 Engin de chantier WO2014168072A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015511234A JP6200943B2 (ja) 2013-04-12 2014-04-03 建設機械

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-084072 2013-04-12
JP2013084072 2013-04-12

Publications (1)

Publication Number Publication Date
WO2014168072A1 true WO2014168072A1 (fr) 2014-10-16

Family

ID=51689481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/059864 WO2014168072A1 (fr) 2013-04-12 2014-04-03 Engin de chantier

Country Status (2)

Country Link
JP (1) JP6200943B2 (fr)
WO (1) WO2014168072A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018091144A (ja) * 2016-11-30 2018-06-14 いすゞ自動車株式会社 排気浄化装置の支持構造
EP3594465A1 (fr) * 2018-07-12 2020-01-15 Kabushiki Kaisha Toyota Jidoshokki Structure de montage d'un appareil de nettoyage de gaz d'échappement
JP2020112067A (ja) * 2019-01-10 2020-07-27 マツダ株式会社 エンジンの排気装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009162137A (ja) * 2008-01-08 2009-07-23 Hitachi Constr Mach Co Ltd 建設機械のＮＯｘ低減装置の配設構造
JP2010071208A (ja) * 2008-09-19 2010-04-02 Yanmar Co Ltd 排気ガス浄化装置
JP5148714B2 (ja) * 2008-11-11 2013-02-20 日立建機株式会社 排気ガス処理装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4115120B2 (ja) * 2001-08-06 2008-07-09 株式会社小松製作所 内燃機関の排気ガス浄化装置
JP4897757B2 (ja) * 2008-09-09 2012-03-14 日立建機株式会社 排気ガス処理装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009162137A (ja) * 2008-01-08 2009-07-23 Hitachi Constr Mach Co Ltd 建設機械のＮＯｘ低減装置の配設構造
JP2010071208A (ja) * 2008-09-19 2010-04-02 Yanmar Co Ltd 排気ガス浄化装置
JP5148714B2 (ja) * 2008-11-11 2013-02-20 日立建機株式会社 排気ガス処理装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018091144A (ja) * 2016-11-30 2018-06-14 いすゞ自動車株式会社 排気浄化装置の支持構造
EP3594465A1 (fr) * 2018-07-12 2020-01-15 Kabushiki Kaisha Toyota Jidoshokki Structure de montage d'un appareil de nettoyage de gaz d'échappement
CN110714827A (zh) * 2018-07-12 2020-01-21 株式会社丰田自动织机 废气净化装置的安装构造
JP2020112067A (ja) * 2019-01-10 2020-07-27 マツダ株式会社 エンジンの排気装置
JP7120031B2 (ja) 2019-01-10 2022-08-17 マツダ株式会社 エンジンの排気装置

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JPWO2014168072A1 (ja) 2017-02-16

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