[go: up one dir, main page]

WO2012117753A1 - Véhicule de chantier - Google Patents

Véhicule de chantier Download PDF

Info

Publication number
WO2012117753A1
WO2012117753A1 PCT/JP2012/050605 JP2012050605W WO2012117753A1 WO 2012117753 A1 WO2012117753 A1 WO 2012117753A1 JP 2012050605 W JP2012050605 W JP 2012050605W WO 2012117753 A1 WO2012117753 A1 WO 2012117753A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
reducing agent
vehicle
storage space
hydraulic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2012/050605
Other languages
English (en)
Japanese (ja)
Inventor
孝造 奥田
修輔 西村
正 飯島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of WO2012117753A1 publication Critical patent/WO2012117753A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the exhaust apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Arrangement of the exhaust system relative to a vehicle or parts thereof
    • 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
    • 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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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 construction vehicle.
  • Some construction vehicles include a denitration device that reduces and purifies exhaust gas using a liquid reducing agent such as an aqueous urea solution in order to reduce nitrogen oxides contained in exhaust gas discharged from an engine such as a diesel engine. is there.
  • a reducing agent tank for storing a liquid reducing agent supplied to the denitration apparatus is provided (see Patent Documents 1 and 2).
  • the denitration device decomposes urea contained in the liquid reducing agent supplied from the reducing agent tank by heat to produce ammonia, and reacts the produced ammonia with nitrogen oxides in the exhaust gas to remove nitrogen oxides. Decompose and detoxify.
  • urea in the urea aqueous solution in the reducing agent tank is decomposed by heat, and the concentration of urea in the urea aqueous solution may change. There is also a risk of bad odor due to ammonia leaking into the atmosphere. Therefore, in the conventional construction vehicle, the reducing agent tank is arranged avoiding the position that becomes a high temperature environment (see Patent Documents 3 to 5).
  • the liquid reductant stored in the reductant tank is consumed in the denitration device while the engine is running. Therefore, the worker regularly replenishes the reducing agent tank with the liquid reducing agent. Increasing the replenishment interval of the liquid reductant to the reductant tank reduces the burden on the worker, and therefore there is a demand for an increase in capacity of the reductant tank. Further, since the reducing agent tank is replenished with the liquid reducing agent by the worker, it is desired to improve the accessibility of the worker to the reducing agent tank.
  • the present invention has been made in view of the above, and can store the liquid reducing agent in an appropriate temperature environment, increase the capacity of the reducing agent tank, or improve the accessibility of the worker to the reducing agent tank.
  • An object is to provide a construction vehicle capable of realizing at least one of them.
  • a construction vehicle uses an engine, a denitration device that reduces and purifies exhaust gas discharged from the engine using a liquid reducing agent, and an output from the engine.
  • a hydraulic device that controls the hydraulic pressure, an engine chamber that houses the engine and the denitration device in front of the counterweight, and a hydraulic device chamber that houses the hydraulic device in front of the engine chamber. Cooling that cools the engine by a cooling medium that is disposed in a position facing the engine in the vehicle width direction in the upper revolving body that is formed and the engine chamber, and exchanges heat with the passing air. And the engine and the cooling device, the engine is formed at a position facing the engine in the vehicle width direction.
  • a ventilation space section for sending to the cooling device, a reducing agent tank for storing the liquid reducing agent, and a storage space section for storing an air cleaner for cleaning the air supplied to the reducing agent tank and the engine.
  • the storage space portion communicates with the ventilation space portion, and is formed in front of the engine chamber and separated from the engine by an engine chamber partition wall formed between the engine chamber and the engine chamber.
  • the hydraulic device chamber is formed so as to be isolated from the hydraulic device by a hydraulic device chamber partition wall formed between the hydraulic device chamber and the hydraulic device chamber.
  • the construction vehicle further includes a fuel tank that stores fuel to be supplied to the engine, and the storage space is formed in the rear of the fuel tank and adjacent to the fuel tank.
  • the reducing agent tank has a length in the vehicle vertical direction longer than a length in the vehicle front-rear direction.
  • the storage space portion communicates with the ventilation space portion, so that the storage space portion can have the same or similar temperature atmosphere as the ventilation space portion.
  • the storage space is formed separately from the engine and hydraulic equipment that are at a high temperature, it is possible to suppress the storage space from being affected by the heat generated from the engine and the hydraulic equipment. Therefore, by storing the reducing agent tank in the storage space, the liquid reducing agent can be stored in an appropriate temperature environment. Further, since the reducing agent tank is accommodated in the accommodating space portion located in front of the vehicle with respect to the counterweight and the engine compartment, the space of the accommodating space portion can be easily secured and the reducing agent tank can be increased in size. . In addition, since the reducing agent tank is stored in the storage space located in front of the vehicle with respect to the counterweight and the engine compartment, it is possible to improve the accessibility of the worker to the reducing agent tank.
  • FIG. 1 is a schematic configuration diagram of a construction vehicle.
  • FIG. 2 is a plan view of the upper swing body.
  • FIG. 3 is a side view of the upper swing body.
  • FIG. 4 is a plan view of a partition wall in the upper swing body.
  • FIG. 5 is a diagram illustrating a configuration example of the reducing agent tank.
  • the vehicle longitudinal direction, the vehicle width direction, and the vehicle vertical direction are based on the upper turning body, the vehicle longitudinal direction is the longitudinal direction of the upper turning body, and the vehicle width direction is the upper turning.
  • the vehicle vertical direction is a vertical direction that is a direction perpendicular to the longitudinal direction and the short direction of the upper swing body.
  • FIG. 1 is a schematic configuration diagram of a construction vehicle.
  • FIG. 2 is a plan view of the upper swing body.
  • FIG. 3 is a side view of the upper swing body.
  • FIG. 4 is a plan view of a partition wall in the upper swing body.
  • FIG. 5 is a diagram illustrating a configuration example of the reducing agent tank.
  • the exteriors 46e, 46j, 46o are removed and the partition walls 46a are removed. 46i, and the exteriors 46c, 46d, 46m, and 46n are shown in cross-section.
  • the construction vehicle 1 is a hydraulic excavator in the present embodiment, and includes a work implement 2, a lower traveling body 3, and an upper turning body 4 as shown in FIG.
  • the work machine 2 is attached to the front of the upper swing body 4 and includes a boom 21, a boom cylinder 22, an arm 23, an arm cylinder 24, a bucket 25, and a bucket cylinder 26.
  • the work machine 2 operates when the cylinders 22, 24, and 26 are driven by hydraulic pressure, and performs a desired work such as excavation.
  • the lower traveling body 3 supports the upper revolving body 4 in a horizontal plane (a plane including the vehicle front-rear direction and the vehicle width direction) so as to be rotatable, and a crawler type traveling mechanism using a pair of left and right crawler belts 31 and 32
  • a crawler type traveling mechanism using a pair of left and right crawler belts 31 and 32
  • the pair of left and right crawler belts 31 and 32 operate when a travel motor (not shown) is driven by hydraulic pressure to move the construction vehicle 1 forward or backward in a straight traveling state or a turning state.
  • the upper swing body 4 has a substantially rectangular shape, and includes a frame 41, a cockpit 42, a work implement mounting portion 43, a counterweight 44, an engine room ER, and a ventilation space. It has part VS, storage space part SS, and hydraulic equipment room OR.
  • the upper swing body 4 includes an engine 5, a cooling device 6, a post-processing system 7 including a denitration device 72, a hydraulic device 8, a hydraulic oil tank 9, an intake device 10 including an air cleaner 101, a fuel tank 11, and a reducing agent tank. 12 is mounted.
  • the upper swing body 4 can be swung in a horizontal plane with respect to the lower traveling body 3 by a hydraulic motor driven by a swing motor (not shown) mounted on the frame 41, and the direction of the work implement 2 in the horizontal plane. It can be set in any direction.
  • Reference numeral 45 denotes a storage box for storing tools and the like.
  • the frame 41 is a base portion of the upper swing body 4, and is provided with a cockpit 42, a work implement attachment portion 43, a counterweight 44, a storage box 45, and the like.
  • the cockpit 42 is a space in which a lever, a pedal, and the like for an operator to operate the construction vehicle 1 are arranged, and one end in the vehicle width direction among the front ends of the vehicle, in the present embodiment. It is provided at the end on the left side toward the front of the vehicle.
  • the work implement attachment portion 43 is to which the work implement 2 is attached. Of the end portions on the front side of the vehicle, the work implement attachment portion 43 is substantially at the center, that is, on the other end portion in the cockpit 42 and the vehicle width direction.
  • the counterweight 44 is provided on the upper swing body 4 in order to ensure stability during work, and can be attached to and detached from the upper swing body 4.
  • the counterweight 44 is provided at an end portion on the rear side of the vehicle, that is, an end portion on the opposite side to the end portion where the work implement 2 is provided in the vehicle front-rear direction, and covers the rear surface of the upper swing body 4. Accordingly, the work implement 2 is configured to extend the boom 21 and the arm 23 in the direction opposite to the direction in which the counterweight 44 is provided.
  • the counterweight 44 forms an end portion of the engine room ER on the rear side of the vehicle, and has a width substantially the same as the width of the upper swing body 4 in the vehicle width direction.
  • the counterweight 44 may be a casting, or may be a sheet metal can that is filled with a heavy object such as cement.
  • the engine room ER houses the engine 5, the cooling device 6, and the post-processing system 7 as shown in FIGS.
  • the engine room ER is surrounded by a front engine room partition wall 46a, a right side engine room exterior 46c, a left side engine room exterior 46d, an upper engine room exterior 46e, and a counterweight 44. It is a space part.
  • the engine room ER is formed in front of the vehicle with respect to the counterweight 44.
  • the engine room ER is formed adjacent to the counterweight 44 in the vehicle front-rear direction.
  • the engine room ER is formed up to both ends of the upper swing body 4 in the vehicle width direction.
  • the front engine compartment partition wall 46a forms an end portion of the engine compartment ER in front of the vehicle, and is formed to the vicinity of both end portions of the upper swing body 4 in the vehicle width direction.
  • the front engine compartment partition wall 46a is provided between a space portion formed in front of the vehicle relative to the engine compartment ER, a storage space portion SS and a hydraulic equipment compartment OR, which will be described later, and the engine compartment ER.
  • the front engine compartment partition wall 46a is connected to an intake piping hole 46f through which an intake piping 102 that connects the air cleaner 101 and the engine 5 is passed, and a reducing agent that passes through a reducing agent piping 13 that connects a reducing agent tank 12 and a denitration device 72 described later.
  • a piping hole 46g is formed.
  • the right side engine compartment exterior 46c forms the right end of the engine compartment ER in the vehicle width direction (one end in the vehicle width direction) and is formed adjacent to the counterweight 44 at the rear of the vehicle. .
  • the right side engine compartment exterior 46c is formed adjacent to a side storage space exterior 46n, which will be described later, in front of the vehicle.
  • a gap S is formed between the right side engine compartment exterior 46c and the front engine compartment partition wall 46a.
  • the right side engine compartment exterior 46c is formed with a plurality of slits 46h, and air can be introduced into the engine compartment ER from the outside.
  • the right side engine compartment exterior 46c is supported to the frame 41 so as to be openable and closable with an end portion at the rear of the vehicle as a base point.
  • the left side engine compartment exterior 46d forms the left end of the engine compartment ER in the vehicle width direction (the other end in the vehicle width direction) and is formed adjacent to the counterweight 44 at the rear of the vehicle. . Further, the right side engine compartment exterior 46d is formed adjacent to a later-described side hydraulic oil tank exterior 46m in front of the vehicle. The left engine compartment exterior 46d is supported to the frame 41 so as to be openable and closable with an end portion at the rear of the vehicle as a base point.
  • the upper engine compartment exterior 46e forms the end of the engine compartment ER above the vehicle, as shown in FIG.
  • the upper engine compartment exterior 46e closes the opening surrounded by the front engine compartment partition wall 46a, the right side engine compartment exterior 46c, the left side engine compartment exterior 46d, and the counterweight 44 from above the vehicle.
  • the upper engine compartment exterior 46e has a shape protruding above the vehicle.
  • the upper engine compartment exterior 46e is closer to the vehicle than the partition walls 46a and the exteriors 46c and 46d. It covers the part protruding in the direction.
  • Engine 5 is a diesel engine and is housed in the engine compartment ER. As shown in FIG. 4, the engine 5 is housed in the engine room ER so that the longitudinal direction of the engine 5 is parallel to the vehicle width direction and the engine output shaft of the engine 5 is disposed on the left side in the vehicle width direction. In the present embodiment, the engine output shaft side is the engine rear side, and the other is the engine front side.
  • the engine 5 is a drive source that drives a hydraulic pump 14 attached to the rear side of the engine.
  • the engine 5 generates output by burning the fuel supplied from the fuel tank 11.
  • the hydraulic pump 14 is a hydraulic pressure generating mechanism that generates hydraulic pressure by driving the engine 5 as a driving source.
  • the hydraulic pump 14 is supplied with hydraulic oil from the connected hydraulic oil tank 9 through the hydraulic pipe 15, and generates hydraulic pressure by pressurizing the supplied hydraulic oil.
  • the hydraulic pump 14 supplies the generated hydraulic pressure to the connected hydraulic device 8 through the hydraulic pipe 16.
  • the cooling device 6 cools the engine 5 and is stored in the engine room ER. As shown in FIG. 4, the cooling device 6 is disposed in the engine chamber ER at a position facing the hydraulic pump 14 with the engine 5 interposed therebetween. In the present embodiment, the cooling device 6 is attached to the front side of the engine.
  • the cooling device 6 circulates a cooling medium such as water between the engine 5 and cools the engine 5 by exchanging heat with air passing through the cooling device 6.
  • the cooling device 6 partitions the engine room ER on a plane parallel to the vehicle longitudinal direction. That is, the cooling device 6 partitions the engine room ER into two space portions.
  • One space portion is a space portion between the right side engine compartment exterior 46c and the cooling device 6, and is a ventilation space portion VS for sending air from the outside of the engine compartment ER to the cooling device 6. That is, the ventilation space VS is formed at a position facing the engine 5 in the vehicle width direction with the cooling device 6 interposed therebetween. External air is introduced into the ventilation space VS from a slit 46h formed in the right side engine compartment exterior 46c.
  • the ventilation space VS faces the gap S in the vehicle front-rear direction. In other words, the ventilation space VS is open at the front of the vehicle and communicates with the space adjacent to the ventilation space VS, that is, the storage space SS in the present embodiment, in front of the ventilation space VS. .
  • the other space portion is a space portion between the left engine compartment exterior 46d and the cooling device 6, and is an engine storage space portion ES in which the engine 5 and the aftertreatment system 7 are stored.
  • the front engine compartment partition wall 46a is preferably formed so as to be completely or substantially closed between the front engine compartment partition wall 46a and the storage space SS in the vehicle front-rear direction.
  • the cooling device 6 includes a heat exchange part (not shown), a cooling medium tank (not shown), and a blower part (not shown).
  • the heat exchange unit is, for example, a radiator, is configured to allow air to pass through, and is provided with a cooling medium pipe through which the cooling medium passes.
  • the cooling medium tank stores the cooling medium.
  • the air blowing unit takes air from outside into the ventilation space VS, allows the air taken into the ventilation space VS to pass through the heat exchange unit, and sends the air that has passed through the heat exchange unit to the engine storage space ES ( Arrow A) shown in FIG.
  • the post-processing system 7 is a purification system that purifies exhaust gas generated by burning fuel in the engine 5, and is disposed above the hydraulic pump 14. As shown in FIG. 4, the post-processing system 7 includes a dust collector 71, a denitration device 72, a first post-processing pipe 73, a second post-processing pipe 74, and an exhaust pipe 75.
  • the post-processing system 7 is supported by the engine 5 by a support mechanism (not shown).
  • the dust collector 71 and the denitration device 72 are housed in the engine compartment ER so that the longitudinal direction of each device is parallel to the vehicle longitudinal direction.
  • the dust collecting device 71 is disposed obliquely above the denitration device 72, in the present embodiment, above the denitration device 72 and closer to the center of the vehicle.
  • the first post-processing pipe 73 connects the dust collector 71 and the exhaust passage (not shown) of the engine 5.
  • the second post-treatment piping 74 connects the dust collector 71 and the denitration device 72.
  • the exhaust pipe 75 has one end connected to the denitration device 72 and the other end opened to the outside. Accordingly, the post-processing system 7 allows the exhaust gas discharged from the engine 5 to pass through the first post-processing pipe 73, the dust collector 71, the second post-processing pipe 74, the denitration device 72, and the exhaust pipe 75 in this order. To discharge.
  • at least a part of the first post-processing pipe 73 and the second post-processing pipe 74 preferably has a movable region such as a bellows.
  • the dust collector 71 collects particulate matter contained in the exhaust gas.
  • the dust collector 71 has a diesel particulate filter (hereinafter, simply referred to as “DPF”) coated with an oxidation catalyst, and collects particulates contained in the exhaust gas, that is, particulate matter. Further, the dust collector 71 generates nitrogen dioxide by oxidizing nitrogen monoxide contained in the exhaust gas. Nitrogen dioxide is unstable in a high-temperature atmosphere such as exhaust gas, and releases oxygen to return to nitric oxide. Then, the particulates collected in the DPF are combusted by the oxidation catalyst and the oxidizing power of the released oxygen. Nitric oxide and the remaining nitrogen dioxide are sent to the denitration device 72.
  • DPF diesel particulate filter
  • ceramics such as cordierite and silicon carbide, or metals, such as stainless steel and aluminum, are used.
  • the denitration device 72 performs reduction purification using exhaust gas as a liquid reducing agent.
  • the denitration device 72 reduces and purifies nitrogen oxides contained in the exhaust gas using urea.
  • the denitration device 72 includes a reducing substance generation unit (not shown), a reaction unit (not shown), and an oxidation treatment unit (not shown) from the upstream side toward the downstream side in the exhaust gas flow direction.
  • the reducing substance generation unit supplies a liquid reducing agent into the exhaust gas and decomposes the liquid reducing agent to generate a reducing substance.
  • the reducing substance generating unit decomposes urea contained in the urea aqueous solution that is a liquid reducing agent supplied from the reducing agent tank 12 via a reducing agent pump (not shown) to generate ammonia.
  • the reaction section is an SCR (Selective Catalytic Reduction) type catalytic converter, and has a urea denitration catalyst (DeNOx catalyst) made of a base metal such as zeolite or vanadium.
  • the urea denitration catalyst reacts ammonia generated in the reducing substance generation unit with nitrogen oxides contained in the exhaust gas, and decomposes and purifies the nitrogen oxides into nitrogen and oxygen.
  • the oxidation treatment unit has an oxidation catalyst, oxidizes the ammonia remaining in the reaction unit, decomposes into nitrogen and water, and renders it harmless.
  • the exhaust gas processed in the oxidation processing unit is discharged to the outside through the exhaust pipe 75.
  • the hydraulic device 8 controls the hydraulic pressure using the output from the engine 5.
  • the hydraulic device 8 controls the hydraulic pressure generated by the hydraulic pump 14 driven by the output from the engine 5 and supplies the hydraulic pressure to the cylinders 22, 24, 26, motors, etc., and operates them.
  • the hydraulic device 8 is accommodated in the hydraulic device chamber OR.
  • the hydraulic equipment room OR is composed of the front engine compartment partition wall 46a, the hydraulic oil tank 9, the cockpit 42, the work implement mounting portion 43, the storage box 45, the fuel tank 11, the hydraulic equipment compartment partition wall. 46i and an upper hydraulic equipment room exterior 46j.
  • the hydraulic equipment room OR is formed in front of the vehicle with respect to the engine room ER.
  • the hydraulic equipment room OR is formed adjacent to the engine room ER across the front engine room partition wall 46a in the vehicle longitudinal direction.
  • the hydraulic equipment room OR is formed between the hydraulic oil tank 9 and the storage space SS in the vehicle width direction.
  • the hydraulic device chamber partition wall 46i forms the right end (one end in the vehicle width direction) of the hydraulic device chamber OR, and is formed adjacent to the front engine chamber partition wall 46a at the rear of the vehicle. Are formed adjacent to the fuel tank 11.
  • the hydraulic device chamber partition wall 46i is provided between a storage space portion SS that is a space portion formed at one end in the vehicle width direction with respect to the hydraulic device chamber OR and the hydraulic device chamber OR.
  • the hydraulic equipment chamber partition wall 46i is formed with an intake pipe hole 46k through which the intake pipe 102 passes and a reducing agent pipe hole 46l through which the reducing agent pipe 13 passes.
  • the hydraulic equipment chamber partition wall 46i is formed by completely closing or substantially closing the space between the front engine chamber partition wall 46a and the fuel tank 11 in the vehicle width direction. Thereby, the communication between the hydraulic device chamber OR and the storage space portion SS is completely blocked or substantially blocked, and it is possible to suppress the temperature of the storage space portion SS from rising due to the heat generated by the hydraulic device 8.
  • the upper hydraulic equipment room exterior 46j forms the end of the hydraulic equipment room OR above the vehicle and covers the top of the hydraulic equipment 8 in the vehicle.
  • the upper hydraulic equipment chamber exterior 46j is fixed to the hydraulic oil tank 9 and the hydraulic equipment compartment partition wall 46i, and an operator can stand on top and perform work on the engine 5, for example.
  • the hydraulic oil tank 9 is a tank for supplying hydraulic oil to the hydraulic pump 14 and collecting hydraulic oil used in the cylinders 22, 24, 26, motors and the like.
  • the hydraulic oil tank 9 is disposed at the rear of the vehicle with respect to the cockpit 42, and is disposed at the front of the vehicle with respect to the front engine compartment partition wall 46a. That is, the hydraulic oil tank 9 is disposed between the cockpit 42 and the engine compartment ER in the vehicle front-rear direction.
  • the hydraulic oil tank 9 includes a lateral hydraulic oil tank exterior 46m formed at the left end (the other end in the vehicle width direction) of the upper swing body 4 in the vehicle width direction, and the hydraulic equipment chamber OR. Arranged between.
  • the side hydraulic oil tank exterior 46m is formed adjacent to the left engine compartment exterior 46d at the rear of the vehicle and adjacent to the cockpit 42 at the front of the vehicle.
  • the intake device 10 supplies air taken in from the outside to the engine 5.
  • the intake device 10 includes an air cleaner 101 and an intake pipe 102.
  • the engine 5 may have a supercharger that compresses the air taken into the intake device 10 and supplies the compressed air to the engine 5.
  • the air cleaner 101 cleans the air supplied to the engine 5.
  • the air cleaner 101 is stored in the storage space SS. That is, the storage space SS is also an air cleaner chamber.
  • the air cleaner 101 has an intake port 101a above the vehicle.
  • the intake pipe 102 connects the air cleaner 101 in the storage space SS and the engine 5 in the engine chamber ER via the hydraulic device chamber partition wall 46i and the front engine chamber partition wall 46a.
  • the storage space SS stores the reducing agent tank 12 as shown in FIG.
  • the storage space SS is also for storing the air cleaner 101.
  • the storage space portion SS is surrounded by a front engine chamber partition wall 46a, a hydraulic device chamber partition wall 46i, a fuel tank 11, a side storage space portion exterior 46n, and an upper storage space portion exterior 46o. It is a formed space.
  • the storage space SS is formed in front of the vehicle with respect to the engine room ER.
  • the storage space SS is formed adjacent to the engine room ER across the front engine room partition wall 46a in the vehicle longitudinal direction. That is, the storage space portion SS is formed so as to be separated from the engine 5 and the post-processing system 7 stored in the engine storage space portion ES by the front engine chamber partition wall 46a. Accordingly, the storage space SS is isolated from the engine 5 and the post-processing system 7 that are at a high temperature by the front engine chamber partition wall 46a, so that the air space between the storage space SS and the engine storage space ES is reduced. Flow will be suppressed.
  • the storage space SS can be prevented from being affected by the heat generated by the engine 5 and the post-processing system 7.
  • the heat of the engine 5 and the aftertreatment system 7 generates heat in the storage space portion SS. An increase in temperature can be suppressed.
  • the storage space portion SS is formed adjacent to the hydraulic equipment chamber OR across the hydraulic equipment compartment partition wall 46i in the vehicle width direction. That is, the storage space portion SS is formed by being separated from the hydraulic device 8 stored in the hydraulic device chamber OR by the hydraulic device chamber partition wall 46i. Accordingly, the storage space SS is isolated by the hydraulic device chamber partition wall 46i with respect to the hydraulic device 8 that becomes high temperature, so that the flow of air between the storage space SS and the hydraulic device chamber OR is suppressed, The influence of heat generated by the hydraulic device 8 can be suppressed. Thereby, compared with the case where the hydraulic equipment chamber partition wall 46i is not provided between the storage space section SS and the hydraulic equipment room OR, the temperature of the storage space section SS is increased by the heat generated by the hydraulic equipment 8. Can be suppressed.
  • the side storage space portion exterior 46n forms the right end (one end in the vehicle width direction) of the storage space SS, and is formed adjacent to the right side engine compartment exterior 46c at the rear of the vehicle. It is formed adjacent to the fuel tank 11 in front of the vehicle.
  • the side storage space portion exterior 46n is formed to face the hydraulic equipment chamber partition wall 46i in the vehicle width direction.
  • the side storage space exterior 46n is supported to the frame 41 so as to be openable and closable with an end portion in front of the vehicle as a base point. Therefore, by opening the side storage space portion exterior 46n, the worker can visually recognize the reducing agent tank 12 stored in the storage space portion SS from the ground without getting on the upper swing body 4, An operation for the reducing agent tank 12 can be performed. Thereby, the accessibility from the ground with respect to the reducing agent tank 12 of an operator can be improved by accommodating the reducing agent tank 12 in the accommodation space part SS.
  • the upper storage space portion exterior 46o forms an end of the storage space portion SS above the vehicle, and includes a front engine chamber partition wall 46a, a hydraulic device chamber partition wall 46i, a fuel tank 11, and a side storage space portion exterior 46n.
  • the opening surrounded by is closed from above the vehicle. Accordingly, since the storage space portion SS is isolated from the outside, it is possible to prevent the reducing agent tank 12 stored in the storage space portion SS from being exposed to the outside. Thereby, damage to the reducing agent tank 12 can be suppressed, and leakage of the liquid reducing agent from the reducing agent tank 12 due to deterioration of the reducing agent tank 12 can be suppressed.
  • the upper storage space portion exterior 46o is formed with an opening / closing lid 46p.
  • the opening / closing lid 46p is formed at a position facing a water supply port 12a (described later) of the reducing agent tank 12 stored in the storage space SS in the vehicle vertical direction.
  • the storage space portion SS communicates with the ventilation space portion VS.
  • the storage space portion SS communicates via a gap S formed between the right side engine compartment exterior 46c and the front engine compartment partition wall 46a. That is, the storage space portion SS communicates with the outside through the ventilation space portion VS and the slit 46h of the right side engine compartment exterior 46c. Therefore, since the air introduced into the ventilation space part VS is introduced into the storage space part SS, the storage space part SS has the same or similar temperature atmosphere as the ventilation space part VS.
  • the air introduced into the storage space SS is air from the outside, the engine storage space ES in which the engine 5 and the post-processing system 7 are stored and the hydraulic equipment in which the hydraulic equipment 8 is stored. It is sufficiently lower than the temperature of air in the chamber OR. That is, the storage space SS is introduced with air having a temperature lower than that of the air in the engine storage space ES and the hydraulic equipment room OR.
  • the fuel tank 11 stores fuel supplied to the engine 5.
  • the fuel tank 11 is formed at the right end (one end in the vehicle width direction) of the upper swing body 4 in the vehicle width direction.
  • the fuel tank 11 is disposed behind the storage box 45 and in front of the storage space SS. That is, the fuel tank 11 is disposed between the storage box 45 and the storage space SS in the vehicle front-rear direction. Therefore, the storage space portion SS is formed behind the fuel tank 11. That is, the storage space portion SS is a space portion formed by being surrounded by the engine room ER, the hydraulic equipment room OR, and the fuel tank 11 in the present embodiment.
  • the distance between the reducing agent tank 12 and the denitration device 72 is suppressed from being longer than that of the fuel tank 11 as compared with the case where the storage box 45 is formed as the storage space SS, for example. Can do.
  • the length of the reducing agent pipe 13 connecting the reducing agent tank 12 and the denitration device 72 can be shortened, and the assembly of the construction vehicle 1 can be improved and the influence on the reducing agent pipe 13 can be reduced, for example, the reducing agent pipe 13. Clogging, crushing, etc. can be suppressed.
  • the fuel tank 11 is formed adjacent to the storage space SS in the longitudinal direction of the vehicle.
  • the fuel tank 11 is disposed at a position on the upper swing body 4 where the worker can easily access the fuel tank 11 in order to replenish the fuel from the fuel filler port 11a as compared with the counterweight 44 and the engine room ER.
  • the storage space portion SS is provided at a place where the worker can easily access.
  • the water supply port 12a of the reducing agent tank 12 stored in the storage space portion SS and the fuel supply port 11a of the fuel tank 11 are adjacent to each other, and when the worker supplies fuel to the fuel tank 11, the storage space.
  • the reducing agent tank 12 accommodated in the section SS can be easily replenished with the liquid reducing agent. Thereby, by storing the reducing agent tank 12 in the storage space SS, it is possible to improve the accessibility of the worker to the reducing agent tank 12 from above the upper swing body 4.
  • the reducing agent tank 12 stores a liquid reducing agent and is stored in the storage space SS as shown in FIG.
  • the reducing agent tank 12 is disposed in front of the vehicle with respect to the air cleaner 101 in the storage space SS. That is, the reducing agent tank 12 is disposed between the fuel tank 11 and the air cleaner 101 in the vehicle front-rear direction in the storage space SS. Therefore, since the reducing agent tank 12 is disposed in front of the vehicle in the storage space SS, the reducing agent tank 12 can be separated from the engine 5 and the post-processing system 7 in the storage space SS. Thereby, it can further suppress that the temperature of storage space part SS rises with the heat which engine 5 and aftertreatment system 7 generate.
  • the reducing agent tank 12 is formed of a material such as a synthetic resin having resistance to the liquid reducing agent. As shown in FIG. 5, the reducing agent tank 12 is formed such that the length Lh in the vehicle vertical direction is longer than the length Ld in the vehicle longitudinal direction. Further, the reducing agent tank 12 is formed such that the length Lw in the vehicle width direction is longer than the length Ld in the vehicle front-rear direction. That is, in this embodiment, the reducing agent tank 12 is formed so that the cross section in the plane including the vehicle up-down direction and the vehicle width direction is wider than the cross section in the plane including the vehicle front-rear direction and the vehicle width direction. Therefore, the reducing agent tank 12 is wide in width and deep in depth.
  • the volume of the reducing agent tank 12 can be ensured. Moreover, even if the liquid level of the liquid reducing agent in the reducing agent tank 12 changes due to the construction vehicle 1 being located on the sloping ground, the liquid level of the liquid reducing agent can be easily maintained above the supply port 12b. The liquid reducing agent can be stably supplied to the denitration device 72.
  • the reducing agent tank 12 has a water supply port 12a and a supply port 12b.
  • the water supply port 12 a is used when the reducing agent tank 12 is replenished with the liquid reducing agent, and is provided in the vehicle upper portion of the reducing agent tank 12.
  • the supply port 12 b is used when supplying the liquid reducing agent stored in the reducing agent tank 12 to the denitration device 72, and is provided in the vehicle lower portion of the reducing agent tank 12.
  • One end of the reducing agent pipe 13 is connected to the supply port 12b.
  • the reducing agent tank 12 has a smaller cross section in a plane including the vehicle front-rear direction and the vehicle width direction of the lower portion of the vehicle as compared with the upper portion of the vehicle.
  • the denitration device 72 can be stably supplied.
  • a heat insulating material is preferably interposed between the reducing agent tank 12 and the fuel tank 11. Thereby, it can suppress that the reducing agent tank 12 receives the heat
  • the storage space SS can be set to the same or similar temperature atmosphere as the ventilation space VS.
  • the storage space SS is formed separately from the engine 5, the post-processing system 7, and the hydraulic equipment 8 that are at a high temperature by a front engine chamber partition wall 46 a and a hydraulic device chamber partition wall 46 i. From this, it can suppress that storage space part SS receives the influence of the heat which generate
  • the storage space portion SS for storing the reducing agent tank 12 is formed behind the engine room ER, for example, the storage space portion SS is formed by changing the shape of the counterweight 44. .
  • the storage space SS since the size of the storage space SS that can be formed is limited, it is difficult to increase the capacity of the reducing agent tank 12.
  • the storage space SS is located in front of the vehicle with respect to the counterweight 44 and the engine room ER. Therefore, the space of the storage space portion SS can be easily secured in the upper swing body 4 and the capacity of the reducing agent tank 12 can be increased as compared with the case where it is formed behind the engine chamber ER. it can.
  • the capacity of the reducing agent tank 12 can be increased while suppressing the influence on the vehicle body structure.
  • the reducing agent tank 12 is disposed in the vicinity of the counterweight 44 that is difficult for an operator to access on the upper swing body 4. .
  • the replenishing agent tank 12 is replenished with the liquid reducing agent in a place where access on the upper swing body 4 is difficult. It will be.
  • the storage space portion SS when the storage space portion SS is arranged behind the upper engine compartment exterior 46e, the replenishment work is performed on or after getting over the upper engine compartment exterior 46e.
  • the storage space SS is located in front of the vehicle with respect to the counterweight 44 and the engine room ER. Therefore, compared with the case where it forms behind a vehicle rather than engine room ER, an operator's accessibility to reductant tank 12 can be improved, and a worker's safety can further be improved.
  • the reducing agent tank 12 is stored in the storage space SS instead of the ventilation space VS. Therefore, as compared with the case where the reducing agent tank 12 is housed in the ventilation space VS, the engine 5 by the cooling device 6 does not hinder the flow of air sent from the outside to the cooling device 6 via the ventilation space VS. It can suppress that the cooling effect of this falls. At the same time, the capacity of the reducing agent tank 12 can be increased. Further, since the reducing agent tank 12 is stored in the storage space SS, the capacity of the reducing agent tank 12 can be increased even if the ventilation space VS is narrow.
  • the storage space portion SS communicates with the ventilation space portion VS, it is possible to suppress the accumulation of air in the storage space portion SS and the accumulation of heat in the storage space portion SS. Further, since the storage space portion SS stores the air cleaner 101 that sucks air, the air flows in the storage space portion SS, and air from outside is easily introduced into the storage space portion SS. Therefore, by storing the reducing agent tank 12 in the storage space SS, the liquid reducing agent can be stored in an appropriate temperature environment.
  • the existing air cleaner chamber can be used as a space for storing the reducing agent tank 12. it can.
  • the air cleaner chamber is formed in a temperature region suitable for the air in the storage space SS to be sucked into the engine 5.
  • the upper limit of the temperature range suitable for intake by the engine 5 is close to the upper limit of the temperature range in which the liquid reducing agent can be appropriately stored.
  • the upper limit of the temperature range suitable for air being sucked into the engine 5 is about 55 ° C.
  • the upper limit of the temperature range where the liquid reducing agent can be appropriately stored is about the same. Therefore, the liquid reducing agent can be stored in an appropriate temperature environment by storing the reducing agent tank 12 with almost no measures against heat in the air cleaner chamber which is an existing space.
  • this embodiment demonstrated the case where the air cleaner 101 was accommodated in the accommodation space part SS, this invention is not limited to this, The air cleaner 101 is arrange
  • a heating device that heats the liquid reducing agent stored in the reducing agent tank 12 may be provided.
  • the heating device may be configured to exchange heat between a cooling medium circulating between the cooling device 6 and the engine 5 and the liquid reducing agent, and to heat the liquid reducing agent with the heat of the cooling medium.
  • the cross-sectional shape of the reducing agent tank 12 in the plane including the vehicle width direction and the vehicle vertical direction is the same as or similar to the cross-sectional shape of the fuel tank 11 in the plane including the vehicle width direction and the vehicle vertical direction. It is preferable to do.
  • the cross-sectional shape of the fuel tank 11 in a plane including the vehicle width direction and the vehicle up-down direction is such that the fuel level in the fuel tank 11 changes even if the fuel level in the fuel tank 11 changes because the construction vehicle 1 is located on an inclined ground. The shape is considered to be above the vehicle from the supply port for supplying fuel to the engine 5.
  • the supply port 12b may be provided on the same upper surface of the reducing agent tank 12 as the water supply port 12a, and the suction tube may be extended from the supply port 12b to the inner bottom surface of the reducing agent tank 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention porte sur un véhicule de chantier (1) qui comporte : un dispositif de dénitration (72), un dispositif de refroidissement (6) placé à l'opposé, dans le sens de la largeur du véhicule, un moteur (5) logé dans un compartiment de moteur (ER) ; un espace de ventilation (VS) formé en un endroit situé en face du moteur (5) dans le sens de la largeur du véhicule, le dispositif de refroidissement (6) étant placé entre eux ; un réservoir d'agent réducteur (12) qui stocke un agent réducteur liquide utilisé dans le dispositif de dénitration (72) ; et un espace de stockage (SS) dans lequel le réservoir d'agent réducteur (12) est placé. L'espace de stockage (SS) communique avec l'espace de ventilation (VS), et il est séparé du moteur (5) par une cloison avant du compartiment moteur (46a) formée entre le compartiment moteur (ER) et l'espace de stockage, et il est séparé du dispositif hydraulique (8) par une cloison du compartiment de dispositif hydraulique (46i) formée entre le compartiment de dispositif hydraulique (OR) et l'espace de stockage. L'agent réducteur liquide peut être stocké dans un environnement à température appropriée, la capacité du réservoir d'agent réducteur peut être augmentée et la facilité pour un ouvrier d'accéder au réservoir d'agent réducteur peut être améliorée.
PCT/JP2012/050605 2011-02-28 2012-01-13 Véhicule de chantier Ceased WO2012117753A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011043077 2011-02-28
JP2011-043077 2011-02-28

Publications (1)

Publication Number Publication Date
WO2012117753A1 true WO2012117753A1 (fr) 2012-09-07

Family

ID=46757695

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/050605 Ceased WO2012117753A1 (fr) 2011-02-28 2012-01-13 Véhicule de chantier

Country Status (1)

Country Link
WO (1) WO2012117753A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5501537B1 (ja) * 2013-09-27 2014-05-21 株式会社小松製作所 還元剤タンク、及び作業車両
CN105074154A (zh) * 2013-03-28 2015-11-18 洋马株式会社 作业车辆的发动机装置
JP2016044539A (ja) * 2015-02-18 2016-04-04 株式会社小松製作所 ブルドーザ
WO2016079773A1 (fr) * 2014-11-21 2016-05-26 株式会社Kcm Véhicule industriel
JP2016113147A (ja) * 2015-12-11 2016-06-23 ヤンマー株式会社 作業車両
JP2016188559A (ja) * 2015-03-30 2016-11-04 株式会社クボタ 作業機
KR20170036073A (ko) 2014-12-24 2017-03-31 가부시키가이샤 케이씨엠 건설기계
US9708951B2 (en) 2014-08-25 2017-07-18 Komatsu Ltd. Reducing agent tank module
JP2019056296A (ja) * 2018-11-21 2019-04-11 株式会社クボタ 作業機
EP3431669A4 (fr) * 2016-03-18 2020-01-22 Hitachi Construction Machinery Co., Ltd. Engin de chantier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008231757A (ja) * 2007-03-20 2008-10-02 Komatsu Ltd 建設車両
WO2008149739A1 (fr) * 2007-05-31 2008-12-11 Hitachi Construction Machinery Co., Ltd. Machine de construction
JP2011011725A (ja) * 2009-07-06 2011-01-20 Sumitomo (Shi) Construction Machinery Co Ltd 建設機械

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008231757A (ja) * 2007-03-20 2008-10-02 Komatsu Ltd 建設車両
WO2008149739A1 (fr) * 2007-05-31 2008-12-11 Hitachi Construction Machinery Co., Ltd. Machine de construction
JP2011011725A (ja) * 2009-07-06 2011-01-20 Sumitomo (Shi) Construction Machinery Co Ltd 建設機械

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2980381A4 (fr) * 2013-03-28 2016-12-07 Yanmar Co Ltd Dispositif de moteur pour engins de travail
CN105074154A (zh) * 2013-03-28 2015-11-18 洋马株式会社 作业车辆的发动机装置
US9534523B2 (en) 2013-03-28 2017-01-03 Yanmar Co., Ltd. Engine device for work vehicle
WO2015045113A1 (fr) * 2013-09-27 2015-04-02 株式会社小松製作所 Réservoir d'agent réducteur et engin de chantier
US9027688B2 (en) 2013-09-27 2015-05-12 Komatsu Ltd. Reducing agent tank and work vehicle
JP5501537B1 (ja) * 2013-09-27 2014-05-21 株式会社小松製作所 還元剤タンク、及び作業車両
US9828743B2 (en) 2014-08-25 2017-11-28 Komatsu Ltd. Bulldozer
US9708951B2 (en) 2014-08-25 2017-07-18 Komatsu Ltd. Reducing agent tank module
JPWO2016079773A1 (ja) * 2014-11-21 2017-08-31 株式会社Kcm 産業用車両
WO2016079773A1 (fr) * 2014-11-21 2016-05-26 株式会社Kcm Véhicule industriel
KR20170036073A (ko) 2014-12-24 2017-03-31 가부시키가이샤 케이씨엠 건설기계
US10066364B2 (en) 2014-12-24 2018-09-04 Kcm Corporation Construction machine
JP2016044539A (ja) * 2015-02-18 2016-04-04 株式会社小松製作所 ブルドーザ
JP2016188559A (ja) * 2015-03-30 2016-11-04 株式会社クボタ 作業機
JP2016113147A (ja) * 2015-12-11 2016-06-23 ヤンマー株式会社 作業車両
EP3431669A4 (fr) * 2016-03-18 2020-01-22 Hitachi Construction Machinery Co., Ltd. Engin de chantier
JP2019056296A (ja) * 2018-11-21 2019-04-11 株式会社クボタ 作業機

Similar Documents

Publication Publication Date Title
WO2012117753A1 (fr) Véhicule de chantier
JP4989999B2 (ja) 建設車両
CN103797195B (zh) 作业车辆
JP2008240676A (ja) 建設車両
JP5701984B2 (ja) ホイールローダ
JP5273933B2 (ja) 建設車両
KR101628798B1 (ko) 환원제 탱크 및 작업 차량
CN104185725B (zh) 轮式装载机
KR101574928B1 (ko) 환원제 탱크 및 작업 차량
CN104040078B (zh) 还原剂箱及作业车辆
JP6385323B2 (ja) 建設機械
CN105209281B (zh) 工程机械
JP5635694B1 (ja) 作業車両、及びホイールローダ
JP5996449B2 (ja) 建設機械
CN103299003A (zh) 工程机械
CN104185723B (zh) 作业车辆及轮式装载机
JP2008240677A (ja) 建設車両
CN107923142A (zh) 工程机械
CN104334802A (zh) 液压挖掘机
JP4925877B2 (ja) 建設車両
JP5768191B1 (ja) 油圧ショベル
JP5756880B2 (ja) ホイールローダ
JP2008231999A (ja) 建設車両
JPWO2015064171A1 (ja) 油圧ショベル
KR101598770B1 (ko) 유압 셔블

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12752225

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12752225

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP