WO2023112456A1 - Mécanisme de collecte de poussière pour machine de construction et machine de construction ainsi équipée - Google Patents

Mécanisme de collecte de poussière pour machine de construction et machine de construction ainsi équipée Download PDF

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Publication number
WO2023112456A1
WO2023112456A1 PCT/JP2022/038402 JP2022038402W WO2023112456A1 WO 2023112456 A1 WO2023112456 A1 WO 2023112456A1 JP 2022038402 W JP2022038402 W JP 2022038402W WO 2023112456 A1 WO2023112456 A1 WO 2023112456A1
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WIPO (PCT)
Prior art keywords
dust collection
air
construction machine
panel
downstream
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Application number
PCT/JP2022/038402
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English (en)
Japanese (ja)
Inventor
学 島田
光 渡邊
涼太 中原
秀樹 林
聡 後藤
拓也 佐藤
敦司 大森
賢次郎 組谷
Original Assignee
国立大学法人広島大学
コベルコ建機株式会社
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Application filed by 国立大学法人広島大学, コベルコ建機株式会社 filed Critical 国立大学法人広島大学
Publication of WO2023112456A1 publication Critical patent/WO2023112456A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air

Definitions

  • the present invention relates to a dust collection mechanism for construction machinery and construction machinery equipped with the same.
  • the machine room is arranged at the rear part of the upper revolving body of the construction machine, and houses an engine, a cooler and a cooling fan for cooling the engine.
  • the cooling fan generates cooling air that flows from the intake port toward the cooler.
  • the cooler causes heat exchange between the cooling air passing through the cooler and a coolant (for example, cooling water) flowing through the cooler, thereby cooling the engine.
  • the dust collecting mechanism is arranged upstream of the cooler and collects foreign matter such as dust contained in the cooling air flowing toward the cooler.
  • Patent Document 1 discloses a dust collecting mechanism including an air introduction side panel member and a guide panel member.
  • the air-introduction-side panel member is arranged on one side surface of the upper revolving body, and has a plurality of air-introduction ports.
  • the guide panel member is arranged to face the air introduction side panel member, and has a plurality of air outlet ports. Air is taken in between the air introduction side panel member and the guide panel member from the plurality of air introduction ports. The flow direction of the air is reversed twice while the air passes between the air introduction side panel member and the guide panel member.
  • the flow of air introduced from one vehicle body side portion and directed in the direction opposite to the one vehicle body side portion is reversed by about 180° in the direction of the one vehicle body side portion, and then the one vehicle body side portion is further turned. about 180° in the direction opposite to the side of the vehicle body.
  • the air flows between the air introduction side panel member and the guide panel member while reversing a plurality of times foreign matter mixed in the air collides with the peripheral surface between the two members, Adheres to or falls on a surface.
  • the air from which foreign matter has been removed in this manner is introduced into the engine compartment through the air outlet port of the guide panel member.
  • the air flow is reversed by approximately 180° between the air introduction side panel member and the guide panel member multiple times, resulting in a large pressure loss of the air. This reduces the flow rate of air supplied to the cooler through the dust collection mechanism, and may prevent sufficient cooling of the engine compartment.
  • An object of the present invention is to provide a dust collection mechanism for a construction machine capable of removing foreign matter contained in the air while ensuring a sufficient flow rate of air for cooling, and a construction machine equipped with the same.
  • the construction machine includes a cooler provided in a machine room having an air inlet, and a cooling fan that forms a forward air flow from the air inlet to the cooler in the machine room.
  • the dust collection mechanism includes a plurality of panel members.
  • the plurality of panel members form a plurality of air passages that allow air to flow from the air inlet to the cooler, each having a panel surface.
  • the plurality of panel members are arranged in an arrangement direction intersecting the forward direction, and form the plurality of air passages between the panel surfaces adjacent to each other in the arrangement direction.
  • Each of the plurality of air passages has a shape in which the direction of the air flowing through the air passages includes the forward vector component at an arbitrary point.
  • Each of the plurality of panel members includes a panel body and a space defining portion.
  • the panel body includes a turning portion that bends to change the direction of air flowing through the air passage.
  • the space defining portion defines a dust collection space between the panel body and the space defining portion on the downstream side of the direction changing portion for capturing foreign matter separated from the air at the direction changing portion.
  • FIG. 1 is a side view showing a construction machine according to a first embodiment of the invention
  • FIG. FIG. 2 is a cross-sectional plan view of the air intake chamber of the construction machine shown in FIG. 1, showing a state where the air intake chamber door is in the closed position
  • FIG. 4 is a cross-sectional plan view of the air intake chamber showing a state in which the air intake chamber door is in an open position
  • 1 is a perspective view of a dust collecting mechanism according to a first embodiment of the invention
  • FIG. FIG. 3 is a side view showing a cross section along line VV of FIG. 2
  • 5 is a cross-sectional plan view showing an enlarged part of the dust collecting mechanism shown in FIG. 4
  • FIG. 8 is a plan view of part of the dust collecting mechanism shown in FIG. 7;
  • FIG. 8 is a cross-sectional view of the dust collecting mechanism shown in FIG. 7 as seen from the downstream end side of the dust collecting mechanism, showing a state in which the closing member of the dust collecting mechanism is in the closed position;
  • FIG. 10 is a partial cross-sectional side view showing the state shown in FIG. 9;
  • FIG. 8 is a cross-sectional view of the dust collecting mechanism shown in FIG. 7 as seen from the downstream end side of the dust collecting mechanism, showing a state in which the closing member of the dust collecting mechanism successively opens the dust collecting space;
  • FIG. 8 is a plan view of part of the dust collecting mechanism shown in FIG. 7;
  • FIG. 8 is a cross-sectional view of the dust collecting mechanism shown in FIG. 7 as seen from the downstream end side of the dust collecting mechanism, showing a state in which the closing member of the dust collecting mechanism successively opens the dust collecting space;
  • FIG. 8 is a plan view of part of the
  • FIG. 12 is a partial cross-sectional side view showing the state shown in FIG. 11;
  • FIG. 8 is a side view showing an inner opening formed between an upstream side portion of a panel member and an upstream edge portion of a space defining portion in the dust collecting mechanism shown in FIG. 7;
  • FIG. 14 is a side view showing a modification of the space delimiter shown in FIG. 13;
  • FIG. 4 is a plan view showing an example in which a turning angle adjusting mechanism is added to the dust collecting mechanism according to the first embodiment;
  • FIG. 1 shows a construction machine 10 according to the first embodiment of the invention.
  • the construction machine 10 is, for example, a hydraulic excavator, and includes a lower traveling body 11, an upper revolving body 12, and an attachment 13, as shown in FIG.
  • the lower traveling body 11 includes a pair of left and right crawlers and can travel on the ground.
  • the upper revolving body 12 is rotatably mounted on the lower traveling body 11 .
  • the upper swing body 12 includes an upper frame 20 , a cab 14 , a machine room cover 16 and a counterweight 22 .
  • the cab 14 , the machine room 15 and the counterweight 22 are installed on the upper frame 20 .
  • the attachment 13 is connected to the front end of the upper frame 20 so as to be able to rise and fall, and performs a predetermined work operation such as an excavation operation.
  • the cab 14 defines a cab adjacent to the attachment 13 .
  • the counterweight 22 is mounted on the rear portion of the upper frame 20 and has a shape along the outer periphery of the rear end of the upper frame 20 .
  • the machine room cover 16 is installed at the rear part of the upper revolving body 12 and constitutes the machine room main body together with the counterweight 22 .
  • the machine room body defines a machine room 15 .
  • the machine room cover 16 is arranged to cover the machine room 15 from above.
  • a partition wall 17 shown in FIG. 2 is arranged in the machine room 15 .
  • the partition wall 17 divides the machine room 15 into an engine room 15a and an intake room 15b.
  • the partition wall 17 extends in the longitudinal direction of the upper revolving body 12 , and the engine chamber 15 a and the intake chamber 15 b are arranged in the lateral direction of the upper revolving body 12 .
  • the partition wall 17 has an opening, and the opening penetrates the partition wall 17, so that cooling air taken into the intake chamber 15b flows from the intake chamber 15b through the opening. It is allowed to flow into the engine compartment 15a in the forward direction Dn.
  • the forward direction Dn is the direction from the intake chamber 15b to the engine chamber 15a as indicated by the arrow in FIG. 2 in this embodiment, and is the lateral direction in the upper revolving body 12 shown in FIG.
  • the engine compartment 15a accommodates an engine 31, a hydraulic pump 32, a cooling fan 33, a fan shroud 34, and a cooler 35, which along the forward direction Dn from its upstream side, the cooling , the fan shroud 34, the cooling fan 33, the engine 31 and the hydraulic pump 32 are arranged in this order.
  • An exhaust port 16a is formed in the machine room cover 16, and the exhaust port 16a is positioned at the downstream end in the forward direction Dn. The exhaust port 16a allows the air sent into the engine room 15a to be discharged to the outside of the engine room 15a through the exhaust port 16a.
  • the engine 31 is a power source for driving the hydraulic pump 32.
  • the engine 31 has a drive shaft extending horizontally.
  • the drive shaft has opposite ends, which constitute an input end and an output end, respectively.
  • the hydraulic pump 32 converts power generated in the engine 31 into hydraulic pressure.
  • the hydraulic pump 32 is connected to the input end (the right end in FIG. 2) of the drive shaft of the engine 31, and is driven by the rotation of the drive shaft to discharge hydraulic oil.
  • the cooler 35 exchanges heat between air passing through the cooler 35 and a coolant for cooling the engine 31, such as engine cooling water, thereby cooling the coolant and the engine 31.
  • the cooler 35 is constituted by a heat exchanger, such as a radiator.
  • the cooler 35 has a core surface and is arranged so that the core surface faces the forward direction Dn.
  • the cooling fan 33 generates an air flow, which flows from the outside of the construction machine 10 toward the engine room 15a through the intake room 15b.
  • an air intake port 44 which will be described in detail later, is formed in the air intake chamber 15b, and the cooling fan 33 forms an air flow in the forward direction Dn.
  • the forward direction Dn is the direction from the intake port 44 to the cooler 35 . Air passing through the cooler 35 reaches the engine 31 .
  • the cooling fan 33 is positioned downstream of the cooler 35 and upstream of the engine 31 .
  • the cooling fan 33 is connected to the output end (the left end in FIG. 2) of the drive shaft of the engine 31, and is driven by the rotation of the drive shaft to generate the air flow in the forward direction Dn.
  • the fan shroud 34 is arranged to surround the cooling fan 33 and guides the air that has passed through the cooler 35 to the engine 31 .
  • the intake chamber 15b is located upstream of the engine chamber 15a in the forward direction Dn. As shown in FIGS. 2 and 3, the intake chamber 15b is defined by a portion of the machine room main body, specifically a portion of the machine room cover 16 and a portion of the counterweight 22. As shown in FIGS.
  • a doorway 40 shown in FIG. 3 is formed in the machine room main body, and an intake room door 41 is connected to the machine room main body.
  • the intake chamber door 41 is a door for opening and closing the door opening 40 .
  • the door opening 40 is formed so as to communicate the inside and the outside of the air intake chamber 15b in the horizontal direction (in this embodiment, the lateral direction of the upper revolving body 12). 2 and the open position shown in FIG. ).
  • the intake chamber door 41 closes the door opening 40 at the closed position, and opens the door opening 40 at the open position.
  • the air intake chamber door 41 can reach the open position by rotating from the closed position toward the outside of the air intake chamber 15b about a vertical axis.
  • the intake port 44 is formed in the intake chamber door 41 in this construction machine 10 .
  • the air intake port 44 communicates the inside and the outside of the air intake chamber 15b in a direction parallel to the forward direction Dn when the air intake chamber door 41 is in the closed position. is taken into the intake chamber 15b through the intake port 44 along the forward direction Dn.
  • the intake chamber 15b accommodates an intake duct 36.
  • the intake duct 36 surrounds the space on the upstream side of the cooler 35 in the forward direction Dn, and guides the air taken into the intake chamber 15b to the cooler 35 in the forward direction Dn.
  • the construction machine 10 further includes a dust collection mechanism 50 shown in FIGS.
  • the dust collecting mechanism 50 is arranged in the air intake chamber 15b, and allows the air taken into the air intake chamber 15b through the air intake port 44 to flow in the forward direction Dn, while allowing the air to flow upstream of the cooler 35.
  • a foreign object 52 (FIG. 6) in the air is captured and collected by the side. By sending the air from which the foreign matter 52 has been collected in this manner to the cooler 35 through the intake duct 36, clogging of the cooler 35 and other devices is suppressed.
  • the dust collecting mechanism 50 is attached to the air intake chamber door 41 so as to move integrally therewith. Therefore, when the air intake chamber door 41 is in the closed position, the dust collection mechanism 50 is located in the air intake chamber 15b and is located between the air intake port 44 and the cooler 35 as shown in FIG. It is possible to trap the foreign object 52 at a position, ie a position upstream of the cooler 35 . On the other hand, when the air intake chamber door 41 is in the open position, the dust collection mechanism 50 is opened to the outside of the air intake chamber 15b as shown in FIG. This facilitates maintenance of the dust collecting mechanism 50 by the operator.
  • the dust collection mechanism 50 includes a plurality of panel members 60, an upper closing member 80, and a reservoir 70, as shown in FIGS.
  • the plurality of panel members 60 are arranged at intervals in the arrangement direction Da.
  • the arrangement direction Da is a direction intersecting the forward direction Dn, and in this embodiment is a horizontal direction orthogonal to the forward direction Dn, that is, a direction parallel to the front-rear direction of the upper rotating body 12 .
  • the plurality of panel members 60 form a plurality of air passages 54, and each of the plurality of air passages 54 allows air to flow from the air inlet 44 toward the air intake duct 36 along the forward direction Dn. allow.
  • the plurality of air passages 54 are respectively formed between the panel members 60 adjacent to each other in the arrangement direction Da among the plurality of panel members 60 .
  • Each of the plurality of panel members 60 has a panel body, and the panel body has panel surfaces 60a and 60b.
  • the panel main bodies are plate members having a thickness direction parallel to the arrangement direction Da, and have the same shape.
  • the panel surfaces 60a and 60b are both side surfaces in the thickness direction of the panel main body, that is, the front and back surfaces.
  • each of the plurality of panel members 60 is arranged.
  • Each of the plurality of air passages 54 is formed between the panel surface 60a of one of the panel members 60 adjacent to each other in the arrangement direction Da and the panel surface 60b of the other panel member 60. It is
  • the panel main body of each of the plurality of panel members 60 includes an upstream side portion 61, an intermediate portion 62 and a downstream side portion 63, which are arranged in order from the upstream side in the forward direction Dn. aligned and continuous with each other.
  • the intermediate portion 62 extends along the forward direction Dn, preferably parallel to the forward direction Dn.
  • the upstream portion 61 is positioned upstream of the intermediate portion 62 in the forward direction Dn, and is positioned inside the air passage 54 along the arrangement direction Da in the forward direction Dn (lower side in FIG. 6). ) by a first angle ⁇ 1.
  • the downstream side portion 63 is inclined toward the inside of the air passage 54 (that is, to the same side as the upstream side portion 61) by a second angle ⁇ 2 along the arrangement direction Da with respect to the forward direction Dn.
  • Both the first and second angles ⁇ 1 and ⁇ 2 are acute angles ( ⁇ 90°).
  • the angles formed between the intermediate portion 62 and the upstream portion 61 and the downstream portion 63 are all obtuse angles. Therefore, the direction in which the air is guided in the air passage 54 includes the vector component of the forward direction Dn throughout the air passage 54 . In other words, the direction in which the air flows does not include a component that causes the air to flow backward in the direction opposite to the forward direction Dn.
  • first and second A curved portion is formed at angles ⁇ 1 and ⁇ 2.
  • a turning portion 64 for dust collection is formed between the intermediate portion 62 and the upstream portion 61 .
  • the deflection portion 64 changes the flow of the air at the first angle ⁇ 1.
  • the portion downstream of the direction-changing portion 64 in this embodiment, the intermediate portion
  • the upstream portion 61 is upstream of the direction-changing portion 64 in the forward direction Dn
  • the downstream portion 63 is downstream of the direction-changing portion 64 in the forward direction Dn. included.
  • the deflection angle at the deflection portion 64 which is the first angle ⁇ 1 in this embodiment, can be set arbitrarily, but is generally set in the range of 30° to 60°. ,preferable. Said turning angles may be different between the air passages.
  • Each of the plurality of panel members 60 further includes a space defining portion 66.
  • the space defining portion 66 has a plate-like shape like the main body of the panel member 60 (the upstream portion 61, the intermediate portion 62, and the downstream portion 63) and extends over the entire area in the vertical direction. It is positioned downstream of 64 to cover a specific portion of the panel body. Accordingly, the space defining portion 66 defines a dust collection space 68 between itself and the specific portion, and the foreign matter 52 separated from the air by the direction changing portion 64 is captured in the dust collection space 68.
  • the space defining portion 66 has both ends in the forward direction Dn, that is, a downstream end and an upstream end on the opposite side. It extends continuously along Dn.
  • the downstream end portion is connected to the intermediate portion of the downstream portion 63 , thereby blocking the downstream end of the dust collecting space 68 and blocking the path of the foreign matter 52 within the dust collecting space 68 .
  • the upstream end portion is separated from the intermediate portion 62 toward the inner side of the air passage 54 along the arrangement direction Da, thereby opening the dust collection space 68 to the upstream side. Allow foreign matter 52 to enter.
  • the upper blocking member 80 is arranged to contact the upper ends of the plurality of panel members 60 , thereby blocking the upper ends of the dust collection spaces 68 defined by the plurality of panel members 60 . This prevents the air that has entered the dust collection space 68 from escaping upward, thereby forming a downward airflow in the dust collection space 68 and preventing the foreign matter 52 from being discharged downward. prompt.
  • the upper closing member 80 is a horizontal flat plate in the example shown in FIG. 5, but its specific shape is not limited.
  • the upper blocking member 80 may be configured by a portion of the intake chamber door 41 or a portion of the machine chamber main body (the intake chamber main body in this embodiment).
  • the storage portion 70 is a portion that stores the foreign matter 52 that is caught in the dust collection space 68 and descends in each of the plurality of air passages 54 .
  • the panel surfaces 60a and 60b of the plurality of panel members 60 according to this embodiment are arranged along the vertical direction, the foreign matter 52 trapped in the dust collection space 68 is removed. descends along the dust collection space 68 by at least its own weight (in this embodiment, together with the downward airflow formed by the upper closing member 80).
  • the storage section 70 is arranged to be positioned below each of the plurality of air passages 54 (that is, below each of the dust collection spaces 68), and can receive and store the falling foreign matter 52 as described above. It is possible.
  • the storage section 70 has a storage container 71 and a container lid 72 .
  • the storage container 71 defines a storage space 74 that opens upward, and is capable of receiving the descending foreign matter 52 in the storage space 74 .
  • the container lid 72 is arranged so as to close the opening of the storage container 71 .
  • a plurality of openings 73 corresponding to the respective dust collection spaces 68 are formed in the container lid 72 , and the foreign substances 52 are allowed to fall into the storage container 71 through the plurality of openings 73 .
  • the reservoir 70 is preferably arranged such that the upper surface of the container lid 72 contacts the lower ends of the plurality of panel members 60 .
  • the storage part 70 is attached to the intake chamber door 41 so as to be movable between a storage position and a recovery position.
  • the storage position is a position below each of the plurality of air passages 54 and is a position where the foreign matter 52 descending in the dust collection space 68 can enter the storage space 74 .
  • the recovery position is a position away from the storage position, and is a position where an operator can recover the foreign matter stored in the storage space 74 .
  • the recovery position is set at a position deviated from the storage position in the horizontal direction, more specifically, in the arrangement direction Da, and the storage section 70 is located between the storage position and the recovery position. is attached to the air intake chamber door 41 so as to be movable in a direction parallel to the arrangement direction Da, that is, slidable.
  • the plurality of panel members 60 and the storage portion 70 are supported by the air intake chamber door 41 via a frame (not shown).
  • the plurality of panel members 60 and the storage portion 70 may be directly supported by the air intake chamber door 41 without the frame.
  • the plurality of panel members 60 may be directly joined to the inner surface of the air intake chamber door 41, and the storage section 70 may be slidably connected to the air intake chamber door 41 via a predetermined guide mechanism. good too. If the air intake chamber door 41 is not provided, the plurality of panel members 60 and the storage portion 70 may be attached to the machine chamber main body (in this embodiment, the air intake chamber main body).
  • the upper surface of the reservoir 70 (the upper surface of the container lid 72 in this embodiment) is positioned below the lower end of the intake port 44 . That is, the plurality of panel members 60 face the intake port 44 in a direction parallel to the forward direction Dn, while the storage portion 70 is positioned downwardly away from the intake port 44. be.
  • This makes it possible to ensure a large area for the air to flow through the plurality of air paths 54, and also prevents the storage section 70 from disturbing the flow of the air.
  • the storage portion 70 can store the foreign matter 52 without significantly affecting the intake performance through the intake port 44 .
  • the dust collecting mechanism 50 is positioned inside the air intake chamber 15b.
  • the cooling fan 33 is driven in this state, air flows from the outside of the construction machine 10 through the air intake port 44 of the air intake chamber door 41 into the air intake chamber 15b.
  • the air taken in in this way flows in the forward direction Dn through the plurality of air passages 54 formed by the plurality of panel members 60 of the dust collection mechanism 50 and the intake duct 36, and passes through the cooler 35. It is possible to
  • the direction of the air flowing through each of the plurality of air passages 54 is changed at the direction changing portion 64 of each of the plurality of panel members 60, while the flow of foreign matter 52 contained in the air is changed.
  • the direction cannot be completely changed, and the foreign matter 52 enters the dust collection space 68 along the intermediate portion 62 on the downstream side of the direction change portion 64 and is caught there. Since the upper end and the downstream end of the dust collection space 68 are blocked by the upper closing member 80 and the downstream end of the space defining portion 66, respectively, the foreign matter 52 flowing into the dust collection space 68 is also It descends together with some of the air flowing into the dust collection space 68 and is stored in the storage section 70 arranged below each of the plurality of air passages 54 . Specifically, the foreign matter 52 passes through a plurality of openings 73 formed in the container lid 72 of the storage portion 70 and is received in the storage space 74 in the storage container 71 .
  • the foreign matter 52 in the air is separated from the air at the deflection section 64 by utilizing its large inertia and captured in the dust collection space 68 defined downstream of the deflection section 64 .
  • the dust collection space 68 is defined by each of the plurality of panel members 60, that is, provided to each of the plurality of air passages 54, it is possible to secure a sufficient dust collection amount as a whole. can be done.
  • each of the plurality of air passages 54 has a shape in which the air flow direction at an arbitrary position in the air passages 54 includes a vector component in the forward direction Dn, and the plurality of air passages 54 are arranged in the Since they are arranged in the arrangement direction Da perpendicular to the forward direction Dn, a large air flow area is ensured as a whole, and the air pressure loss in the dust collection mechanism 50 can be effectively suppressed. This makes it possible to trap foreign matter 52 contained in the air upstream of the cooler 35 while avoiding poor cooling of the engine 31 due to insufficient air flow to the cooler 35 .
  • the foreign matter 52 captured in each of the dust collection spaces 68 as described above can be stored in the common storage section 70, so that the worker can easily collect the foreign matter 52.
  • the operator moves the air intake chamber door 41 from the closed position to the open position, moves the storage section 70 from the storage position up to that point to the recovery position, and moves the air intake chamber door 41 to the recovery position.
  • the foreign matter 52 in the storage space 74 in the storage section 70 can be easily recovered.
  • the dust collection mechanism 50 is attached to the main body of the air intake chamber instead of the door 41 of the air intake chamber, the effect of the storage portion 70 is that, for example, the storage portion 70 is positioned at the storage position and the recovery position on the main body of the air intake chamber. can be obtained as well if it is mounted movably between .
  • the container lid 72 of the reservoir 70 is an optional element. That is, the container lid 72 may be omitted and the opening of the storage container 71 may always open toward the plurality of air paths 54 .
  • the container lid 72 having the openings 73 corresponding to the respective dust collection spaces 68 suppresses the turbulence of the air flow in the plurality of air passages 54 and allows the air flow inside the dust collection space 68 . It allows the trapped foreign matter 52 to be stored in the storage space 74 .
  • the dust collecting mechanism 50A is mounted on the construction machine 10 shown in FIG. 1 in the same manner as the dust collecting mechanism 50 according to the first embodiment, and is common with the dust collecting mechanism 50 in the following points. That is, the dust collection mechanism 50A includes a plurality of panel members 60A and a storage portion 90, and is attached to the inner surface of the air intake chamber door 41 as shown in FIGS. Rotate together.
  • the plurality of panel members 60A are arranged in an arrangement direction Da at intervals so as to form a plurality of air passages 54, and the arrangement direction Da is a horizontal direction perpendicular to the forward direction Dn.
  • Each of the plurality of panel members 60A has a panel body and a space defining portion 66A.
  • the panel main body has a pair of front and back panel surfaces 60a and 60b, and the air passage 54 is formed between one panel surface 60a and the other panel surface 60b of the panel members 60A adjacent to each other in the arrangement direction Da. It is formed.
  • the panel body includes an upstream portion 61, an intermediate portion 62 and a downstream portion 63 similar to the upstream portion 61, the intermediate portion 62 and the downstream portion 63 according to the first embodiment, and the A direction-changing portion 64 is formed between the intermediate portion 62 and the upstream side portion 61 to change the flow of air.
  • the dust collection mechanism 50A differs from the dust collection mechanism 50 in the following points.
  • the space defining portion 66 extends upstream from the intermediate portion of the downstream portion 63 substantially parallel to the intermediate portion 62 to define a straight dust collection space 68.
  • the space defining portion 66A according to the second embodiment defines a dust collection space 68A that extends from the downstream end of the downstream portion 63 and bends in the middle.
  • the space defining portion 66A includes a downstream blocking wall 66a, a downstream covering wall 66b, and an upstream covering wall 66c.
  • the downstream blocking wall 66a extends from the downstream end of the downstream portion 63 toward the inside of the air passage 54 (to the right in FIG. 7 and to the left in FIGS. 9 and 11) along the arrangement direction Da. blocks the downstream end of the dust collection space 68A.
  • the downstream cover wall 66b extends from the inner end of the downstream blocking wall 66a to the upstream side (in FIG. 10 and 12 ) to cover the downstream side portion 63 from the inside of the air passage 54 .
  • the upstream cover wall 66c extends from the upstream end of the downstream cover wall 66b to the upstream side (that is, in the forward direction Dn) substantially parallel to the intermediate portion 62 (that is, in a direction substantially parallel to the forward direction Dn). opposite direction) to cover the downstream portion of the intermediate portion 62 . Therefore, the space defining portion 66A defines a dust collection space 68A between a portion of the intermediate portion 62 and the entire downstream portion 63 on the downstream side of the direction-changing portion 64. has a bent shape at a position corresponding to the boundary portion between the intermediate portion 62 and the downstream portion 63 . This prevents the foreign matter 52 caught in the downstream end of the dust collection space 68A from flowing back and escaping from the dust collection space 68A, thereby making it possible to increase the efficiency of catching the foreign matter 52. .
  • the storage part 90 includes a lower closing member 92, a slide support part 94, and a lock part 96 instead of the storage container 71 and the container lid 72 according to the first embodiment.
  • the lower closing member 92 is composed of, for example, a horizontal flat plate and has an area capable of contacting the lower ends of the plurality of panel members 60A.
  • the lower blocking member 92 can block the lower ends of the plurality of air passages 54 and the dust collection space 68 by being arranged in such a contact state, and the dust collection space 68 can be closed. A foreign object 52 falling inside can be deposited on the lower closure member 92 .
  • the slide support portion 94 supports the lower closing member 92 at a predetermined height position.
  • the height position is a position where the upper surface of the lower closing member 92 contacts the lower ends of the plurality of panel members 60A. Preferably, as shown in FIGS. It is at a height position equal to or lower than the lower end of the intake port 44 formed in the door 41 .
  • the slide support portion 94 further allows the lower closing member 92 to slide between the closed position and the open position.
  • the closed position is a position where the lower closing member 92 blocks the lower ends of all of the plurality of air passages 54 as shown in FIG. This is the position where the lower closing member 92 is displaced from the open position in the horizontal sliding direction so as to open the lower end of the .
  • the sliding direction is a direction parallel to the arrangement direction Da as shown in FIG. 11 in this embodiment.
  • the slide support portion 94 specifically includes a frame 97 and a plurality of biasing members 98 .
  • the frame body 97 is fixed inside the air intake chamber door 41 and supports the lower closing member 92 so as to be slidable in the sliding direction.
  • the frame 97 integrally has a bottom wall 97a, a pair of side walls 97b, and a pair of restraining walls 97c.
  • the bottom wall 97a extends in the arrangement direction Da below the plurality of panel members 60A, and supports the lower closing member 92 via the plurality of biasing members 98 on the bottom wall 97a.
  • the outlet 97d that penetrates the bottom wall 97a in the vertical direction. 52 drops are allowed.
  • the pair of side walls 97b rises by a predetermined height dimension from both edges of the bottom wall 97a in the width direction.
  • the pair of restraining walls 97c extend inward in the width direction from the upper ends of the pair of side walls 97b to restrain the lower closing member 92 from above. As shown in FIGS. 10 and 12, the restraint areas by the pair of restraint walls 97c are set on both outer sides of the plurality of panel members 60A in the width direction.
  • the plurality of urging members 98 are arranged at a position separated from the discharge port 97d, and urge the lower closing member 92 upward so that the lower closing member 92 and the lower ends of the plurality of panel members 60A are separated from each other. keep in touch.
  • Each of the plurality of urging members 98 is composed of a member that can be elastically deformed in the vertical direction, such as a plate spring. By being interposed between the lower surface of the panel member 60A, the elastic force of the biasing member 98 is utilized to bias the lower closing member 92 upward toward the lower end of the panel member 60A.
  • the lock portion 96 can be switched between a locked state and an unlocked state.
  • the locked state is a state in which the lock portion 96 prevents movement of the lower closing member 92 from the closed position
  • the unlocked state is a state in which the prevention of movement is released.
  • the locking portion 96 according to this embodiment includes a constrained portion 96a and a constraining bolt 96b.
  • the restrained portion 96a extends upward from one end of the lower closing member 92 in the sliding direction (the direction parallel to the arrangement direction Da in this embodiment). Specifically, the end is the front end (the right end in FIGS. 9 and 11) of the lower blocking member 92 in the direction from the closed position to the open position.
  • the restrained portion 96a is formed with a bolt insertion hole through which the restraining bolt 96b is inserted.
  • a screw hole 60s is formed in a specific panel member 60A among the plurality of panel members 60A.
  • the specific panel member 60A is a panel member 60A that can come into contact with the restrained portion 96a while the lower closing member 92 is in the closed position, and the screw holes 60s correspond to the bolt insertion holes. formed in matching positions.
  • the restraint bolt 96b is inserted into the bolt insertion hole from the outside and screwed into the screw hole 60s, thereby The closing member 92 is locked at the closing position (locked state). Conversely, the lock is released (the unlocked state) by removing the restraining bolt 96b from the screw hole 60s.
  • each of the plurality of panel members 60A further includes an upstream blocking wall 67.
  • the upstream blocking wall 67 is arranged to block only the lower end portion of the upstream opening formed between the panel surface 60a of each of the plurality of panel members 60A and the space defining portion 66A.
  • the upstream blocking wall 67 arranged in this way prevents the foreign matter 52 accumulated on the lower blocking member 92 in the dust collection space 68 from leaking out to the upstream side, thereby storing the foreign matter 52. promote
  • a confirmation window 65 shown in FIGS. 9 and 11 is formed at the lower end of the downstream blocking wall 66a of each of the plurality of panel members 60A.
  • the confirmation window 65 allows an operator to grasp the accumulation degree of the foreign matter 52 through the confirmation window 65 from a position in front of the downstream blocking wall 66a while the intake chamber door 41 is open.
  • the confirmation window 65 is therefore preferably covered with a sheet material made of a material with relatively high transparency.
  • the lower blocking member 92 of the reservoir 90 is set at the blocking position, and the plurality of air passages are closed. 54 and the openings at the lower ends of the dust collection space 68 are closed.
  • the locking portion 96 is switched to the locked state to lock the lower closing member 92 at the closing position, so that the lower closing member 92 may accidentally close due to vibration of the construction machine 10 or the like. Displacement from the position towards said open position can be prevented.
  • the upstream blocking wall 67 prevents the foreign substances 52 deposited on the lower blocking member 92 from escaping from the dust collection space 68A.
  • the operator can check the state of accumulation of the foreign matter 52 in the dust collection space 68 through the confirmation window 65 by, for example, periodically opening the intake chamber door 41 . Then, when the foreign matter 52 is accumulated to some extent, the lock portion 96 is switched to the unlocked state (in this embodiment, the restraint bolt 96b is removed), and the lower closing member 92 is opened from the closed position. By sliding it to the position, the foreign matter 52 accumulated on the lower closing member 92 until then can be discharged downward. This foreign object 52 may be dropped to the ground as it is, or may be received and collected by a suitable cleaning jig 100 as shown in FIG. 11, for example.
  • the sliding direction can be arbitrarily set, but is preferably parallel to the arrangement direction Da as shown in FIGS. This allows the dust collecting spaces 68 to be opened one by one as the lower closing member 92 slides from the closed position to the open position. As a result, the foreign matter 52 can be efficiently discharged or collected in order while avoiding a large amount of foreign matter 52 being discharged at once.
  • the storage part 90 has a simple and lightweight structure that does not require the storage container 71 according to the first embodiment, for example, by using the lower end portions of the plurality of air passages 54 as storage spaces. can be stored and recovered. Therefore, even when the storage part 90 is attached to the air intake chamber door 41, it is possible to collect dust while preventing a significant increase in the total weight of the air intake chamber door 41 (the weight including the dust collection mechanism). .
  • the present invention is not limited to the embodiments described above.
  • the present invention includes, for example, the following aspects.
  • the direction-changing portion is not limited to a portion where the panel member is sharply bent, such as the direction-changing portion 64, as long as it changes the flow direction of the air to the extent that foreign matter can be captured.
  • the direction-changing part may, for example, have a curved shape in which the tangential direction changes continuously.
  • the arrangement direction is not limited to the horizontal direction orthogonal to the forward direction, as long as it intersects the forward direction.
  • the arrangement direction may be, for example, the horizontal direction. That is, the plurality of panel members may be arranged at intervals in the vertical direction, that is, in a posture in which the panel surface is substantially horizontal.
  • the arrangement of the plurality of panel members in the horizontal direction with the panel surface extending along the vertical direction allows the foreign matter caught in each dust collection space to descend at least by its own weight and be easily discharged or collected.
  • the space defining portion may be any one that can define a dust collection space between itself and the panel body, and its shape can be freely set.
  • the size of the opening width WO of the inlet opening 69 shown in FIG. 13 does not matter.
  • the opening width WO is the dimension of the inlet opening 69 along the forward direction Dn, and the imaginary inlet line 66f extends upstream along the upstream edge 66e in a direction opposite to the forward direction Dn (ie, toward the upstream side). It is a straight line projected onto the side portion 61 .
  • the smaller the opening width WO the higher the velocity of the air flowing into the dust collection space 68, and the smaller the diameter of the foreign matter 52 can be captured.
  • the panel extending direction is a direction orthogonal to the forward direction Dn and the arrangement direction Da, and is the vertical direction in the first embodiment. For example, as shown in FIG.
  • the linear upstream edge 66e is inclined with respect to the vertical direction to linearly change the opening width WO from the minimum width WOmin to the maximum width WOmax, or By forming the upstream edge portion 66e in a curved shape or a polygonal line shape, it is possible to change the opening width WO depending on the position in the vertical direction.
  • the space defining portion 66 is arranged so as to be tilted in a direction parallel to the forward direction Dn as indicated by a two-dot chain line in FIG. It is also possible to change the degree. This effect is the same for the panel member 60A according to the second embodiment.
  • the turning angle (the first angle ⁇ 1 in the first embodiment) may be variable.
  • the intermediate portion 62 and the upstream portion 61 of each (or part of) of the plurality of panel members 60 are connected via hinges 102 so as to be rotatable about the vertical axis. and the turning angle may be changed by the rotation.
  • Making the turning angle variable makes it possible to change the balance between the flow rate of the air supplied to the cooler 35 and the amount of foreign matter collected in the dust collection space 68 . Specifically, if the direction change angle is made smaller, the pressure loss in each air passage 54 can be suppressed and the flow rate of the air supplied to the cooler 35 can be increased. On the other hand, if the direction change angle is increased, the separation performance of the foreign matter 52 in the direction change portion 64 can be enhanced, and the amount of the foreign matter 52 collected can be increased.
  • the dust collection mechanism according to the present invention may include a turning angle adjustment mechanism for positively changing the turning angle.
  • FIG. 15 shows a turning angle adjusting mechanism 110 which is an example thereof.
  • the direction change angle adjustment mechanism 110 changes the direction change angle of each direction change portion 64 by moving the upstream side portion 61 of each of the plurality of panel members 60 in a direction parallel to the arrangement direction Da.
  • the turning angle adjusting mechanism 110 includes a connecting member 112 and a driving device 114 .
  • the connecting member 112 is rotatable about an axis in the vertical direction via a joint portion 118 at the upstream end of each of the upstream portions 61, and is rotatable along the upstream portion 61 within a limited range. is connected so as to be relatively displaceable.
  • the driving device 114 is composed of, for example, a cylinder device having a rod 116 that can be expanded and contracted in the arrangement direction Da, and the connecting member 112 is connected to the end of the rod 116 .
  • the driving device 114 rotates each of the upstream portions 61 connected to each of the connecting members 112 with respect to the intermediate portion 62 by moving the connecting members 112 along the arrangement direction Da. to change the turning angle.
  • the dust collecting mechanism according to the present invention may further include a gap adjusting mechanism that changes the panel gap.
  • the panel interval is the interval between panel members adjacent to each other in the arrangement direction. By adjusting the panel interval, it is also possible to change the balance between the flow rate of air supplied to the cooler and the amount of foreign matter collected in the dust collection space.
  • Such adjustment of the panel spacing is achieved, for example, by a combination of the plurality of panel members being slidably arranged in the arrangement direction and a driving mechanism for moving each of the plurality of panel members at different speeds. can be realized with
  • the storage part can be omitted as appropriate.
  • the reservoirs 70 and 90 may be omitted in the first or second embodiment. That is, the foreign matter descending in the dust collection space may be directly discharged onto the ground.
  • the storage container 71 or the lower closing member 92 may be fixed immovably.
  • (C) Other Elements Constituting Construction Machine The specific arrangement of other elements in the construction machine on which the dust collecting mechanism according to the present invention is mounted is not limited.
  • the position of the cooling fan is not limited to the positions in the first and second embodiments.
  • the cooling fan may be positioned upstream of the cooler along the forward direction.
  • a construction machine dust collection mechanism capable of removing foreign matter contained in the air while ensuring a sufficient flow rate of cooling air and a construction machine equipped with the same are provided.
  • the construction machine includes a cooler provided in a machine room having an air inlet, and a cooling fan that forms a forward air flow from the air inlet to the cooler in the machine room.
  • the dust collection mechanism includes a plurality of panel members.
  • the plurality of panel members form a plurality of air passages that allow air to flow from the air inlet to the cooler, each having a panel surface.
  • the plurality of panel members are arranged in an arrangement direction intersecting the forward direction, and form the plurality of air passages between the panel surfaces adjacent to each other in the arrangement direction.
  • Each of the plurality of air passages has a shape in which the direction of the air flowing through the air passage includes the forward vector component at an arbitrary point.
  • Each of the plurality of panel members includes a panel body and a space defining portion.
  • the panel body includes a turning portion that bends to change the direction of air flowing through the air passage.
  • the space defining portion defines a dust collection space between the panel body and the space defining portion on the downstream side of the direction changing portion for capturing foreign matter separated from the air at the direction changing portion.
  • the dust collection mechanism can effectively remove foreign matter contained in the air while ensuring a sufficient flow rate of the cooling air taken into the machine chamber through the air inlet. Specifically, some or all of the foreign matter contained in the air is separated from the air by utilizing the difference in inertia between the air and the foreign matter at the direction changing portion, and is separated into the dust collection space on the downstream side thereof. captured by Moreover, since the dust collection space is formed in each of the plurality of air passages defined by the plurality of panel members, the foreign matter is efficiently collected by these dust collection spaces.
  • each of the plurality of air passages has a shape in which the direction of the air flowing through the air passage at an arbitrary point includes the vector component in the forward direction. The pressure loss is small compared to the airflow that flows in the opposite direction. This effectively suppresses a reduction in the flow rate of air passing through the dust collection mechanism and reaching the cooler, thereby allowing air to be supplied to the cooler at a sufficient rate.
  • the panel body may include an upstream side portion that is positioned upstream in the forward direction from the direction-changing portion and that is inclined inward of the air passage with respect to the forward direction.
  • a downstream side portion may be included that is located downstream of the direction portion in the forward direction and that is inclined toward the inside of the air passage with respect to the forward direction.
  • the panel body is provided between an intermediate portion extending along the forward direction and the intermediate portion upstream of the intermediate portion and inclined inward of the air passage with respect to the forward direction.
  • An upstream portion forming the direction-changing portion, and a downstream portion inclined inwardly of the airflow path with respect to the forward direction on the downstream side of the intermediate portion, wherein the space defining portion is located on the downstream side. preferably extends upstream from the forward portion to cover a portion of the intermediate portion and at least a portion of the downstream portion.
  • the space defining portion can efficiently trap foreign matter separated from the air by the direction changing portion in cooperation with the downstream portion in the dust collection space.
  • the space defining portion includes a downstream blocking portion connected to the downstream end of the downstream portion to block the downstream end of the dust collection space, and a downstream blocking portion extending along the downstream portion from the downstream blocking portion. It is preferable to include a downstream cover part that covers the entire downstream part, and an upstream cover part that extends upstream along the intermediate part from the downstream cover part and covers a part of the intermediate part. is.
  • Such a space defining portion defines a curved dust collection space at a position corresponding to the boundary between the intermediate portion and the downstream side portion, so that foreign matter trapped downstream of the dust collection space flows backward. to prevent it from escaping from the dust collection space. This makes it possible to increase the dust collection efficiency.
  • the space defining portion includes an upstream edge facing the upstream side portion along the forward direction, and the upstream edge the portion has a shape in which the width of the inlet opening formed between the upstream edge portion and the upstream portion when viewed from the inside of the air passage changes depending on the position of the panel body in the panel extending direction; preferable.
  • the panel extending direction is a direction orthogonal to each of the forward direction and the arrangement direction. The smaller the width of the inlet opening, the higher the flow velocity of the air flowing into the dust collection space through the inlet opening, making it possible to trap smaller-diameter contaminants. Therefore, changing the width of the entrance opening according to the position in the panel extending direction expands the range of particle sizes of foreign matter that can be captured.
  • the plurality of panel members are preferably arranged such that the panel surface extends along the vertical direction. This allows the foreign matter collected in the dust collection space to descend along the panel surface due to its own weight, thereby facilitating the discharge or collection of the foreign matter.
  • each of the plurality of panel members extends continuously from the upper end to the lower end of the plurality of panel members, and the dust collection mechanism closes the upper ends of the plurality of dust collection spaces. It is preferable to further include an upper closing member contacting the upper ends of the plurality of panel members. The upper closing member closes the upper end of each of the plurality of dust collection spaces to form a downward airflow in the dust collection space, thereby promoting the downward discharge of the foreign matter. .
  • the dust collection mechanism further includes a reservoir for receiving and storing foreign matter that descends through the dust collection space, so that the foreign matter removed from the air is efficiently stored in the reservoir. It is possible to recover.
  • the storage section preferably has, for example, a storage container, and the storage container preferably defines a storage space that opens upward toward the dust collection space. This enables the foreign matter that has descended in the dust collection space to be efficiently stored in the storage space.
  • the storage container collects foreign matter stored in the storage space at a storage position where the foreign matter descending in the dust collection space can enter the storage space and at a position outside the storage position. It is preferably movable to and from a retrieval position in which it is possible. This enables an operator to easily retrieve the foreign matter stored in the storage space at the storage position at the recovery position.
  • the reservoir may include a lower closing member movable between a closed position and an open position. At the closed position, the lower closing member collectively closes the lower end of the dust collecting space formed by the plurality of panel members, so that the foreign matter falling through the dust collecting space is prevented from reaching the top of the lower closing member.
  • the open position each of the dust collection spaces is opened to allow the foreign matter to be discharged to the outside of the dust collection space. This is accomplished by depositing the foreign matter on the lower blocking member while the lower blocking member is in the closed position, and then moving the blocking member to the open position at an appropriate timing. Allows the deposited foreign matter to be released to the outside.
  • the moving direction in which the lower closing member moves from the closed position to the open position is along the horizontal direction. This eliminates the need to reserve a large vertical space for moving the lower closing member.
  • the movement direction is a direction parallel to the arrangement direction. This makes it possible for the lower closing member to open the dust collecting space sequentially in the course of the movement to release the foreign matter little by little, thereby allowing a large amount of foreign matter to be discharged at once by the movement of the lower closing member. Foreign matter can be prevented from being released.
  • the reservoir further includes a biasing member configured to keep the lower closure member in the closed position in contact with the lower ends of the plurality of panel members. It is preferred to urge upwardly towards the lower ends of the plurality of panel members.
  • the biasing member can effectively suppress leakage of foreign matter deposited on the lower closing member from between the closing member and the lower ends of the plurality of panel members.
  • the storage part further includes a lock part, and the lock part has a locked state that prevents movement of the lower closing member from the closed position to the open position and an unlocked state that releases the movement.
  • Switchable is preferred.
  • the locking part can prevent the foreign object from being discharged by mistake due to the lower closing member being carelessly moved from the closing position to the opening position.
  • each of the plurality of panel members has a downstream blocking portion that blocks a part of the air passage at the downstream end of the panel body in the forward direction
  • the downstream blocking portion Preferably, a confirmation window is provided to allow the foreign matter accumulated on the lower closing member to be visually confirmed from the downstream side in the forward direction.
  • the confirmation window makes it possible to grasp the state of storage of the foreign matter regardless of the presence of the downstream blocking portion.
  • the reservoir is preferably located below the lower end of the intake port.
  • the storage portion arranged in this manner can receive foreign matter without significantly affecting the intake performance through the intake port.
  • the dust collecting mechanism further includes a turning angle adjusting mechanism that changes the turning angle of the turning portion of at least one panel member among the plurality of panel members. Changing the deflection angle makes it possible to change the balance between the flow rate of air supplied to the cooler and the amount of foreign matter collected in the dust collection space.
  • the dust collecting mechanism may further include a gap adjusting mechanism that changes the panel gap.
  • the panel interval is the interval between panel members adjacent to each other in the arrangement direction. By adjusting the panel interval, it is also possible to change the balance between the flow rate of air supplied to the cooler and the amount of foreign matter collected in the dust collection space.
  • a construction machine comprising: a cooler provided in a machine room having an air intake; and a dust collection mechanism configured as described above for removing foreign matter contained in the air on the upstream side of the cooler.
  • the construction machine includes a machine room body defining the machine room and a doorway communicating with the machine room, and the machine room body movably between a closed position where the doorway is closed and an open position where the doorway is opened.
  • a door connected to the door, wherein the air inlet is formed in the door, the plurality of panel members are attached to the door so as to move integrally with the door, and the open position of the door is the It is preferable that the positions open the plurality of panel members to the outside of the machine room.
  • the plurality of panel members attached to the door in this manner are opened to the outside by moving the door to the open position, thereby allowing an operator to easily perform maintenance of the plurality of panel members. make it possible.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

L'invention concerne un mécanisme de collecte de poussière (50) pour une machine de construction pouvant éliminer la matière étrangère contenue dans l'air tout en assurant un débit d'air de refroidissement suffisant. Le mécanisme de collecte de poussière (50) comprend une pluralité d'éléments de panneau (60) formant une pluralité de passages d'air (54). Chacun de la pluralité d'éléments de panneau (60) a une partie de rotation (64) qui change la direction d'écoulement d'air et une partie de définition d'espace (66) définissant un espace de collecte de poussière (68) en aval de la partie de retournement. Chacun de la pluralité de passages d'air (54) a une forme telle que la direction de l'air s'écoulant à travers les passages d'air (54) comprend un composant de vecteur dans la direction avant (Dn) à n'importe quel point dans le passage d'air (54) à partir d'une admission d'air vers un refroidisseur.
PCT/JP2022/038402 2021-12-14 2022-10-14 Mécanisme de collecte de poussière pour machine de construction et machine de construction ainsi équipée WO2023112456A1 (fr)

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JP2021-202632 2021-12-14
JP2021202632A JP2023088019A (ja) 2021-12-14 2021-12-14 建設機械の集塵機構及びこれを備えた建設機械

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WO2023112456A1 true WO2023112456A1 (fr) 2023-06-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757225U (fr) * 1980-09-19 1982-04-03
WO2001000299A1 (fr) * 1999-06-30 2001-01-04 Munters Corp Devesiculeur souple
JP2006328665A (ja) * 2005-05-23 2006-12-07 Kobelco Contstruction Machinery Ltd 建設機械のフィルタ装置
JP2015517085A (ja) * 2012-04-27 2015-06-18 ジーアールジー， エルエルシーＧｒｇ， Ｌｌｃ 水分及び粉塵を除去するためのルーバー装置
JP2020143472A (ja) * 2019-03-05 2020-09-10 コベルコ建機株式会社 作業機械
JP2021169271A (ja) * 2020-04-16 2021-10-28 コベルコ建機株式会社 建設機械

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757225U (fr) * 1980-09-19 1982-04-03
WO2001000299A1 (fr) * 1999-06-30 2001-01-04 Munters Corp Devesiculeur souple
JP2006328665A (ja) * 2005-05-23 2006-12-07 Kobelco Contstruction Machinery Ltd 建設機械のフィルタ装置
JP2015517085A (ja) * 2012-04-27 2015-06-18 ジーアールジー， エルエルシーＧｒｇ， Ｌｌｃ 水分及び粉塵を除去するためのルーバー装置
JP2020143472A (ja) * 2019-03-05 2020-09-10 コベルコ建機株式会社 作業機械
JP2021169271A (ja) * 2020-04-16 2021-10-28 コベルコ建機株式会社 建設機械

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