WO2020235483A1 - Fan shroud, and work vehicle - Google Patents

Fan shroud, and work vehicle Download PDF

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Publication number
WO2020235483A1
WO2020235483A1 PCT/JP2020/019461 JP2020019461W WO2020235483A1 WO 2020235483 A1 WO2020235483 A1 WO 2020235483A1 JP 2020019461 W JP2020019461 W JP 2020019461W WO 2020235483 A1 WO2020235483 A1 WO 2020235483A1
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WO
WIPO (PCT)
Prior art keywords
fan
wall plate
guide member
base plate
opening
Prior art date
Application number
PCT/JP2020/019461
Other languages
French (fr)
Japanese (ja)
Inventor
昭浩 大澤
俊太郎 諸澤
篤史 河野
Original Assignee
株式会社小松製作所
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Filing date
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Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Publication of WO2020235483A1 publication Critical patent/WO2020235483A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers

Definitions

  • This disclosure relates to fan shrouds and work vehicles.
  • a base plate having an opening and a fan being arranged in the opening, a wall plate protruding in the first direction from the peripheral edge of the base plate, and the base plate facing the first direction.
  • a guide member which is arranged on the surface of the fan and guides a gas in the radial direction of the fan, and the wall plate includes a first wall plate and a second wall plate which is farther from the opening than the first wall plate.
  • the guide member is provided with a fan shroud that is placed between the first wall plate and the opening.
  • the generation of noise can be suppressed.
  • FIG. 1 is a diagram schematically showing an example of a work vehicle according to the present embodiment.
  • FIG. 2 is a side sectional view showing a fan shroud and a fan according to the present embodiment.
  • FIG. 3 is a front view of the fan shroud and the fan according to the present embodiment.
  • FIG. 4 is a perspective view showing a guide member according to the present embodiment.
  • FIG. 5 is a front view of the fan shroud and the fan according to the comparative example.
  • FIG. 6 is a front view of the fan shroud and the fan according to the present embodiment.
  • the work vehicle 1 includes a vehicle body 2, a dump body 3, a traveling device 4, an engine 5, a hydraulic pump 6, a cooling unit 7, a fan shroud 8, and a fan 9. ..
  • the dump body 3 is a structure on which cargo is loaded.
  • the dump body 3 is supported by the rear vehicle body 2R.
  • the dump body 3 can be moved in the vertical direction by a hoist cylinder (not shown). When the dump body 3 is raised by the hoist cylinder, the load is discharged from the dump body 3.
  • the traveling device 4 supports the vehicle body 2.
  • the traveling device 4 has a joint mechanism 11, a rotating mechanism 12, and wheels 13.
  • the joint mechanism 11 flexibly connects the front vehicle body 2F and the rear vehicle body 2R around the joint axis AX extending in the vertical direction.
  • the rotation mechanism 12 rotatably connects the front vehicle body 2F and the rear vehicle body 2R around the rotation shaft BX extending in the front-rear direction.
  • the traveling device 4 has steering cylinders (not shown) arranged on the left side and the right side of the joint mechanism 11.
  • the vehicle body 2 bends as the steering cylinder expands and contracts. When the vehicle body 2 bends, the work vehicle 1 turns.
  • the wheels 13 are rotated by the power generated by the engine 5.
  • the wheel 13 includes a front wheel 13F rotatably supported by the front vehicle body 2F and a rear wheel 13R rotatably supported by the rear vehicle body 2R. Tires are mounted on the wheels 13. The rotation of the wheels 13 causes the work vehicle 1 to travel on the ground.
  • the engine 5 is the power source for the work vehicle 1.
  • An example is a diesel engine as the engine 5.
  • the engine 5 is arranged inside the front vehicle body 2F.
  • the hydraulic pump 6 discharges hydraulic oil.
  • the hydraulic pump 6 is connected to the engine 5. By driving the engine 5, the hydraulic pump 6 is driven, and hydraulic oil is supplied to a hydraulic cylinder such as a hoist cylinder or a steering cylinder.
  • the cooling unit 7 includes a radiator that cools the engine 5.
  • the outer shape of the cooling unit 7 is substantially a rectangular parallelepiped.
  • the cooling unit 7 is arranged inside the front vehicle body 2F.
  • a vent 14 is provided at the front of the front vehicle body 2F.
  • the vent 14 connects the inside and the outside of the front vehicle body 2F.
  • the cooling unit 7 is arranged so as to face the vent 14.
  • the fan shroud 8 is arranged behind the cooling unit 7.
  • the fan shroud 8 is connected to the cooling unit 7. At least a portion of the fan shroud 8 is arranged between the cooling unit 7 and the fan 9.
  • the fan 9 rotates around the rotation shaft RX, for example, to circulate air (gas) through the cooling unit 7.
  • the fan 9 is, for example, an axial fan.
  • the fan 9 is arranged between the cooling unit 7 and the engine 5. At least a portion of the fan 9 is located behind the fan shroud 8. As the fan 9 rotates, the air outside the front vehicle body 2F flows into the inside of the front vehicle body 2F through the vent 14. The air that has flowed into the front vehicle body 2F passes through the cooling unit 7 and then flows into the fan 9 via the fan shroud 8.
  • At least a part of the fan shroud 8 is arranged around the fan 9.
  • the fan shroud 8 is connected to the cooling unit 7. As the fan 9 rotates, only the air that has passed through the cooling unit 7 flows into the fan 9 via the fan shroud 8.
  • the fan shroud 8 suppresses a decrease in the cooling performance of the cooling unit 7.
  • FIG. 2 is a side sectional view showing the fan shroud 8 and the fan 9 according to the present embodiment.
  • FIG. 3 is a front view of the fan shroud 8 and the fan 9 according to the present embodiment.
  • FIG. 3 shows a state in which the cooling unit 7 is removed from the fan shroud 8.
  • the fan shroud 8 is arranged on the base plate 20 having an opening 21, the wall plate 30 protruding forward from the peripheral edge of the base plate 20, and the air front surface 20A of the base plate 20. It is provided with a guide member 40 for guiding the above.
  • the fan 9 is arranged so as to fit inside the opening 21.
  • the front surface 20A of the base plate 20 is the surface of the base plate 20 facing forward.
  • the fan shroud 8 is made of metal.
  • the fan shroud 8 may be made of synthetic resin.
  • the outer shape of the base plate 20 is a rectangular shape that is long in the left-right direction.
  • the longitudinal direction of the base plate 20 is the left-right direction.
  • the lateral direction of the base plate 20 is the vertical direction.
  • the front surface 20A of the base plate 20 and the rear surface 20B of the base plate 20 are flat.
  • the front surface 20A and the rear surface 20B of the base plate 20 are parallel to each other.
  • the opening 21 is formed in the central portion of the base plate 20. At least a portion of the fan 9 is arranged in the opening 21 of the fan shroud 8.
  • the wall plate 30 projects forward from the peripheral edge of the base plate 20.
  • the base plate 20 and the wall plate 30 are integrated.
  • the wall plate 30 is formed by bending the peripheral edge portion of one plate serving as the base plate 20.
  • the plate to be the wall plate 30 may be joined to the peripheral edge of the plate to be the base plate 20 by welding or the like.
  • the wall plate 30 includes a first wall plate 31 extending in the left-right direction, which is the longitudinal direction of the base plate 20, and a second wall plate 32 extending in the vertical direction, which is the lateral direction of the base plate 20.
  • the first wall plate 31 includes an upper wall plate 31U connected to the upper side of the base plate 20 and a lower wall plate 31B connected to the lower side of the base plate 20.
  • the second wall plate 32 includes a left wall plate 32L connected to the left side of the base plate 20 and a right wall plate 32R connected to the right side of the base plate 20.
  • the left end of the upper wall plate 31U and the upper end of the left wall plate 32L are connected.
  • the right end of the upper wall plate 31U and the upper end of the right wall plate 32R are connected.
  • the left end of the lower wall plate 31B and the lower end of the left wall plate 32L are connected.
  • the right end of the lower wall plate 31B and the lower end of the right wall plate 32R are connected.
  • the wall plate 30 prevents air that has passed through the cooling unit 7 from leaking from between the cooling unit 7 and the wall plate 30 to the periphery of the wall plate 30. Since the air that has passed through the cooling unit 7 passes only through the opening 21, the cooling efficiency is improved.
  • the second wall plate 32 is farther from the opening 21 than the first wall plate 31.
  • the lower surface of the upper wall plate 31U and the edge of the opening 21 are separated by a distance La (first distance).
  • the upper surface of the lower wall plate 31B and the edge of the opening 21 are separated by a distance Lb (second distance).
  • the right surface of the left wall plate 32L and the edge of the opening 21 are separated by a distance Lc (third distance).
  • the left surface of the right wall plate 32R and the edge of the opening 21 are separated by a distance Ld (fourth distance).
  • the fan shroud 8 has a ring member 60 arranged around the opening 21.
  • the ring member 60 is provided on the rear surface 20B of the base plate 20 so as to surround the opening 21.
  • the ring member 60 projects rearward from the base plate 20.
  • the ring member 60 may be fixed to the base plate 20 by bolts.
  • the guide member 40 guides air in the radial direction of the fan 9.
  • the guide member 40 rectifies the air flowing in the circumferential direction of the fan 9 in the radial direction.
  • the guide member 40 is arranged between the first wall plate 31 and the opening 21.
  • the first wall plate 31 includes an upper wall plate 31U and a lower wall plate 31B.
  • the guide member 40 is arranged between the upper wall plate 31U and the opening 21 and between the lower wall plate 31B and the opening 21.
  • the base plate 20 has a rectangular shape that is long in the left-right direction.
  • the guide member 40 is arranged in the longitudinal direction of the base plate 20 between the first wall plate 31 and the opening 21 which have a short distance from the opening 21 among the first wall plate 31 and the second wall plate 32.
  • the guide member 40 is arranged between the left end portion and the central portion of the base plate 20 and between the right end portion and the central portion of the base plate 20 in the left-right direction which is the longitudinal direction of the base plate 20.
  • the guide members 40 are arranged at four locations around the opening 21.
  • the guide member 40 arranged between the upper wall plate 31U and the opening 21 between the left end portion and the central portion of the base plate 20 is appropriately referred to as a guide member 40A
  • the base plate 20 The guide member 40 arranged between the right end portion and the central portion is appropriately referred to as a guide member 40B.
  • the guide member 40 arranged between the left end portion and the central portion of the base plate 20 between the lower wall plate 31B and the opening 21 is appropriately referred to as a guide member 40C, and the right end portion and the central portion of the base plate 20.
  • the guide member 40 arranged between the guide member 40 and the guide member 40 is appropriately referred to as a guide member 40D.
  • the guide members 40 are symmetrically arranged in the left-right direction, which is the longitudinal direction of the base plate 20, and the vertical direction, which is the lateral direction of the base plate 20. That is, when the first symmetry axis SL1 extending in the left-right direction through the rotation axis RX and the second symmetry axis SL2 extending in the vertical direction through the rotation axis RX are defined, they are arranged between the upper wall plate 31U and the opening 21.
  • the outer shape and position of the guide members 40A and 40B and the outer shape and position of the guide members 40C and 40D arranged between the lower wall plate 31B and the opening 21 are line-symmetrical with respect to the first symmetry axis SL1.
  • the outer shape and position of 40D are line symmetric with respect to the second axis of symmetry SL2.
  • the first symmetry axis SL1 does not have to pass through the rotation axis RX.
  • the first axis of symmetry SL1 may be defined above or below the rotation axis RX.
  • the second axis of symmetry SL2 does not have to pass through the rotation axis RX.
  • the second axis of symmetry SL2 may be defined to the left of the rotation axis RX, or may be defined to the right.
  • FIG. 4 is a perspective view showing the guide member 40 according to the present embodiment, and corresponds to an enlarged view of a portion A in FIG.
  • the guide member 40 guides air in the radial direction of the fan 9.
  • the radial direction of the fan 9 means the radial direction of the rotating shaft RX.
  • the first guide member 41 is a plate-shaped member.
  • the first guide member 41 includes a guide surface 41A and a guide surface 41B parallel to the radial direction of the rotating shaft RX, an inner end surface 41C facing inward in the radial direction of the rotating shaft RX, and an outer end surface facing outward in the radial direction of the rotating shaft RX. It has a 41D, a front surface 41E facing forward, and a rear surface 41F facing backward.
  • the guide surface 41A and the guide surface 41B are parallel.
  • the guide surface 41A and the guide surface 41B are parallel to the radial direction of the rotation axis RX and parallel to the rotation axis RX.
  • the outer end surface 41D is connected to the inner surface 33 of the first wall plate 31.
  • the outer end surface 41D may face the inner surface 33 of the first wall plate 31 via a gap.
  • the front surface 41E is arranged behind the front surface 34 of the first wall plate 31.
  • the front surface 34 of the first wall plate 31 includes the front surface of the flange 50. That is, in the front-rear direction, the size of the first guide member 41 is smaller than the size of the first wall plate 31. In the front-rear direction, the position of the front surface 41E of the first guide member 41 and the position of the front surface 34 of the first wall plate 31 may be the same. The front surface 41E of the first guide member 41 may not protrude forward from the front surface 34 of the first wall plate 31.
  • the second guide member 42 is arranged at a position closer to the center of the base plate 20 than the first guide member 41 in the left-right direction.
  • the guide surface 42A and the guide surface 42B are parallel.
  • the guide surface 42A and the guide surface 42B are parallel to the radial direction of the rotation axis RX and parallel to the rotation axis RX.
  • the outer end surface 42D is connected to the inner surface 33 of the first wall plate 31.
  • the outer end surface 42D may face the inner surface 33 of the first wall plate 31 via a gap.
  • the rear surface 42F is connected to the front surface 20A of the base plate 20.
  • the air that has passed through the cooling unit 7 flows into the space 15. At least a part of the air flowing into the space 15 hits the inner surface of the wall plate 30, and then flows into the fan 9 while flowing through the front surface 20A of the base plate 20.
  • the air flow direction at the inner edge of the opening 21 is divided into a circumferential direction of the fan 9 and a radial direction of the fan 9.
  • air circulates in the circumferential direction of the fan 9.
  • the second space 15B between the second wall plate 32 and the opening 21 air circulates in the radial direction of the fan 9.
  • the distance (La, Lb) between the first wall plate 31 and the opening 21 is short, and the distance (Lc, Ld) between the second wall plate 32 and the opening 21 is long.
  • the first space 15A is small and the second space 15B is large. As the air flows from the second space 15B to the first space 15A, the air circulates in the circumferential direction in the first space 15A.
  • FIG. 6 is a front view of the fan shroud 8 and the fan 9 according to the present embodiment.
  • the guide member 40 is arranged in the first space 15A between the first wall plate 31 and the opening 21.
  • the guide member 40 guides air in the radial direction of the fan 9. As a result, air is suppressed from flowing in the circumferential direction at the inner edge of the opening 21 in the first space 15A.
  • the first guide member 41 is arranged between one end of the base plate 20 and the central portion and between the other end and the central portion of the base plate 20 in the longitudinal direction of the base plate 20. By arranging the first guide member 41, it is suppressed that air flows in the circumferential direction in the first space 15A.
  • the height of the guide member 40 is determined according to the height of the space in which air is circulating in the circumferential direction.
  • the height of the guide member 40 is a dimension in the front-rear direction of the guide member 40, and includes a relative position between the front surface 41E of the first guide member 41 and the front surface 34 of the first wall plate 31.
  • the height of the guide member 40 is preferably 50 mm or more.
  • the guide member 40 includes the first guide member 41 and the second guide member 42.
  • the second guide member 42 may be omitted.
  • the number of guide members 40 may be one, or any plurality of two or more.
  • the cooling unit 7 includes a radiator for cooling the engine 5.
  • the cooling unit 7 may include an oil cooler or an aftercooler.
  • the work vehicle 1 is an articulated dump truck.
  • the work vehicle 1 provided with the fan shroud 8 may be, for example, a rigid dump truck, or another work vehicle such as a grader, a wheel loader, or a hydraulic excavator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

This fan shroud is provided with: a baseplate including an opening in which a fan is disposed; wall plates projecting in a first direction from peripheral edge portions of the baseplate; and guide members which are disposed on a surface of the baseplate facing in the first direction, and which guide gas in the radial direction of the fan. The wall plates include first wall plates, and second wall plates which are farther from the opening than the first wall plates. The guide members are disposed between the first wall plates and the opening.

Description

ファンシュラウド、及び作業車両Fan shroud and work vehicle
　本開示は、ファンシュラウド、及び作業車両に関する。 This disclosure relates to fan shrouds and work vehicles.
　特許文献１に開示されているように、ラジエータに接続されるファンシュラウドが知られている。 As disclosed in Patent Document 1, a fan shroud connected to a radiator is known.
特開平０６－０４２４９８号公報Japanese Unexamined Patent Publication No. 06-042498
　ファンシュラウドは、ファンの周囲に配置される。ファンの回転により空気が流通すると、騒音が発生する可能性がある。騒音が発生すると、作業車両の運転者又は作業車両の周囲の作業者に不快感を与える。 The fan shroud is placed around the fan. Noise can be generated when air flows due to the rotation of the fan. When noise is generated, it causes discomfort to the driver of the work vehicle or the workers around the work vehicle.
　本発明の態様は、騒音の発生を抑制することを目的とする。 An aspect of the present invention is intended to suppress the generation of noise.
　本発明の態様に従えば、開口を有し前記開口にファンが配置されるベース板と、前記ベース板の周縁部から第１方向に突出する壁板と、前記第１方向を向く前記ベース板の表面に配置され前記ファンの径方向に気体をガイドするガイド部材と、を備え、前記壁板は、第１壁板と、前記第１壁板よりも前記開口から離れている第２壁板と、を含み、前記ガイド部材は、前記第１壁板と前記開口との間に配置される、ファンシュラウドが提供される。 According to the aspect of the present invention, a base plate having an opening and a fan being arranged in the opening, a wall plate protruding in the first direction from the peripheral edge of the base plate, and the base plate facing the first direction. A guide member which is arranged on the surface of the fan and guides a gas in the radial direction of the fan, and the wall plate includes a first wall plate and a second wall plate which is farther from the opening than the first wall plate. And, the guide member is provided with a fan shroud that is placed between the first wall plate and the opening.
　本発明の態様によれば、騒音の発生を抑制することができる。 According to the aspect of the present invention, the generation of noise can be suppressed.
図１は、本実施形態に係る作業車両の一例を模式的に示す図である。FIG. 1 is a diagram schematically showing an example of a work vehicle according to the present embodiment. 図２は、本実施形態に係るファンシュラウド及びファンを示す側断面図である。FIG. 2 is a side sectional view showing a fan shroud and a fan according to the present embodiment. 図３は、本実施形態に係るファンシュラウド及びファンを前方から見た図である。FIG. 3 is a front view of the fan shroud and the fan according to the present embodiment. 図４は、本実施形態に係るガイド部材を示す斜視図である。FIG. 4 is a perspective view showing a guide member according to the present embodiment. 図５は、比較例に係るファンシュラウド及びファンを前方から見た図である。FIG. 5 is a front view of the fan shroud and the fan according to the comparative example. 図６は、本実施形態に係るファンシュラウド及びファンを前方から見た図である。FIG. 6 is a front view of the fan shroud and the fan according to the present embodiment.
　以下、本発明に係る実施形態について図面を参照しながら説明するが、本発明はこれに限定されない。以下で説明する実施形態の構成要素は、適宜組み合わせることができる。また、一部の構成要素を用いない場合もある。 Hereinafter, embodiments according to the present invention will be described with reference to the drawings, but the present invention is not limited thereto. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.
　本実施形態においては、「左」、「右」、「前」、「後」、「上」、及び「下」の用語を用いて各部の位置関係について説明する。これらの用語は、作業車両１の中心を基準とした相対位置又は方向を示す。 In this embodiment, the positional relationship of each part will be described using the terms "left", "right", "front", "rear", "top", and "bottom". These terms refer to a relative position or direction with respect to the center of the work vehicle 1.
［作業車両］
　図１は、本実施形態に係る作業車両１の一例を模式的に示す図である。本実施形態においては、作業車両１がアーティキュレート式ダンプトラックであることとする。 [Working vehicle]
FIG. 1 is a diagram schematically showing an example of a work vehicle 1 according to the present embodiment. In the present embodiment, the work vehicle 1 is an articulated dump truck.
　図１に示すように、作業車両１は、車体２と、ダンプボディ３と、走行装置４と、エンジン５と、油圧ポンプ６と、冷却ユニット７と、ファンシュラウド８と、ファン９とを備える。 As shown in FIG. 1, the work vehicle 1 includes a vehicle body 2, a dump body 3, a traveling device 4, an engine 5, a hydraulic pump 6, a cooling unit 7, a fan shroud 8, and a fan 9. ..
　車体２は、前部車体２Ｆと後部車体２Ｒとを含む。前部車体２Ｆに運転室１０が設けられる。作業車両１は、運転室１０に搭乗した運転者によって運転される。 The vehicle body 2 includes a front vehicle body 2F and a rear vehicle body 2R. The driver's cab 10 is provided on the front vehicle body 2F. The work vehicle 1 is driven by a driver who is in the driver's cab 10.
　ダンプボディ３は、積荷が積載される構造物である。ダンプボディ３は、後部車体２Ｒに支持される。ダンプボディ３は、図示しないホイストシリンダにより上下方向に移動可能である。ホイストシリンダによりダンプボディ３が上昇することによって、ダンプボディ３から積荷が排出される。 The dump body 3 is a structure on which cargo is loaded. The dump body 3 is supported by the rear vehicle body 2R. The dump body 3 can be moved in the vertical direction by a hoist cylinder (not shown). When the dump body 3 is raised by the hoist cylinder, the load is discharged from the dump body 3.
　走行装置４は、車体２を支持する。走行装置４は、関節機構１１と、回転機構１２と、車輪１３とを有する。関節機構１１は、上下方向に延伸する関節軸ＡＸを中心に前部車体２Ｆと後部車体２Ｒとを屈曲可能に連結する。回転機構１２は、前後方向に延伸する回転軸ＢＸを中心に前部車体２Ｆと後部車体２Ｒとを回転可能に連結する。また、走行装置４は、関節機構１１の左側方及び右側のそれぞれに配置される図示しないステアリングシリンダを有する。ステアリングシリンダが伸縮することによって車体２が屈曲する。車体２が屈曲することによって、作業車両１が旋回する。車輪１３は、エンジン５が発生する動力により回転する。車輪１３は、前部車体２Ｆに回転可能に支持される前輪１３Ｆと、後部車体２Ｒに回転可能に支持される後輪１３Ｒとを含む。車輪１３にタイヤが装着される。車輪１３が回転することによって、作業車両１は地面を走行する。 The traveling device 4 supports the vehicle body 2. The traveling device 4 has a joint mechanism 11, a rotating mechanism 12, and wheels 13. The joint mechanism 11 flexibly connects the front vehicle body 2F and the rear vehicle body 2R around the joint axis AX extending in the vertical direction. The rotation mechanism 12 rotatably connects the front vehicle body 2F and the rear vehicle body 2R around the rotation shaft BX extending in the front-rear direction. Further, the traveling device 4 has steering cylinders (not shown) arranged on the left side and the right side of the joint mechanism 11. The vehicle body 2 bends as the steering cylinder expands and contracts. When the vehicle body 2 bends, the work vehicle 1 turns. The wheels 13 are rotated by the power generated by the engine 5. The wheel 13 includes a front wheel 13F rotatably supported by the front vehicle body 2F and a rear wheel 13R rotatably supported by the rear vehicle body 2R. Tires are mounted on the wheels 13. The rotation of the wheels 13 causes the work vehicle 1 to travel on the ground.
　エンジン５は、作業車両１の動力源である。エンジン５として、ディーゼルエンジンが例示される。エンジン５は、前部車体２Ｆの内部に配置される。 The engine 5 is the power source for the work vehicle 1. An example is a diesel engine as the engine 5. The engine 5 is arranged inside the front vehicle body 2F.
　油圧ポンプ６は、作動油を吐出する。油圧ポンプ６は、エンジン５と接続される。エンジン５が駆動することにより、油圧ポンプ６が駆動し、ホイストシリンダ又はステアリングシリンダのような油圧シリンダに作動油が供給される。 The hydraulic pump 6 discharges hydraulic oil. The hydraulic pump 6 is connected to the engine 5. By driving the engine 5, the hydraulic pump 6 is driven, and hydraulic oil is supplied to a hydraulic cylinder such as a hoist cylinder or a steering cylinder.
　冷却ユニット７は、エンジン５を冷却するラジエータを含む。冷却ユニット７の外形は、実質的に直方体状である。冷却ユニット７は、前部車体２Ｆの内部に配置される。前部車体２Ｆの前部に通気口１４が設けられる。通気口１４は、前部車体２Ｆの内部と外部とを接続する。冷却ユニット７は、通気口１４に面するように配置される。 The cooling unit 7 includes a radiator that cools the engine 5. The outer shape of the cooling unit 7 is substantially a rectangular parallelepiped. The cooling unit 7 is arranged inside the front vehicle body 2F. A vent 14 is provided at the front of the front vehicle body 2F. The vent 14 connects the inside and the outside of the front vehicle body 2F. The cooling unit 7 is arranged so as to face the vent 14.
　ファンシュラウド８は、冷却ユニット７よりも後方に配置される。ファンシュラウド８は、冷却ユニット７に接続される。ファンシュラウド８の少なくとも一部は、冷却ユニット７とファン９との間に配置される。 The fan shroud 8 is arranged behind the cooling unit 7. The fan shroud 8 is connected to the cooling unit 7. At least a portion of the fan shroud 8 is arranged between the cooling unit 7 and the fan 9.
　ファン９は、例えば回転軸ＲＸを中心に回転して、冷却ユニット７に空気（気体）を流通させる。ファン９は、例えば軸流ファンである。ファン９は、冷却ユニット７とエンジン５の間に配置される。ファン９の少なくとも一部は、ファンシュラウド８よりも後方に配置される。ファン９が回転することにより、前部車体２Ｆの外部の空気が通気口１４を介して前部車体２Ｆの内部に流入する。前部車体２Ｆの内部に流入した空気は、冷却ユニット７を通過した後、ファンシュラウド８を介してファン９に流入する。 The fan 9 rotates around the rotation shaft RX, for example, to circulate air (gas) through the cooling unit 7. The fan 9 is, for example, an axial fan. The fan 9 is arranged between the cooling unit 7 and the engine 5. At least a portion of the fan 9 is located behind the fan shroud 8. As the fan 9 rotates, the air outside the front vehicle body 2F flows into the inside of the front vehicle body 2F through the vent 14. The air that has flowed into the front vehicle body 2F passes through the cooling unit 7 and then flows into the fan 9 via the fan shroud 8.
　ファンシュラウド８の少なくとも一部は、ファン９の周囲に配置される。ファンシュラウド８は、冷却ユニット７に接続されている。ファン９が回転することにより、冷却ユニット７を通過した空気のみがファンシュラウド８を介してファン９に流入する。ファンシュラウド８は、冷却ユニット７の冷却性能の低下を抑制する。 At least a part of the fan shroud 8 is arranged around the fan 9. The fan shroud 8 is connected to the cooling unit 7. As the fan 9 rotates, only the air that has passed through the cooling unit 7 flows into the fan 9 via the fan shroud 8. The fan shroud 8 suppresses a decrease in the cooling performance of the cooling unit 7.
［ファンシュラウド］
　図２は、本実施形態に係るファンシュラウド８及びファン９を示す側断面図である。図３は、本実施形態に係るファンシュラウド８及びファン９を前方から見た図である。図３は、ファンシュラウド８から冷却ユニット７を外した状態を示す。 [Fan Shroud]
FIG. 2 is a side sectional view showing the fan shroud 8 and the fan 9 according to the present embodiment. FIG. 3 is a front view of the fan shroud 8 and the fan 9 according to the present embodiment. FIG. 3 shows a state in which the cooling unit 7 is removed from the fan shroud 8.
　図２及び図３に示すように、ファンシュラウド８は、開口２１を有するベース板２０と、ベース板２０の周縁部から前方に突出する壁板３０と、ベース板２０の前面２０Ａに配置され空気をガイドするガイド部材４０とを備える。ファン９は、開口２１の内側に収まるように配置される。ベース板２０の前面２０Ａは、前方を向くベース板２０の表面である。ファンシュラウド８は、金属製である。なお、ファンシュラウド８は、合成樹脂製でもよい。 As shown in FIGS. 2 and 3, the fan shroud 8 is arranged on the base plate 20 having an opening 21, the wall plate 30 protruding forward from the peripheral edge of the base plate 20, and the air front surface 20A of the base plate 20. It is provided with a guide member 40 for guiding the above. The fan 9 is arranged so as to fit inside the opening 21. The front surface 20A of the base plate 20 is the surface of the base plate 20 facing forward. The fan shroud 8 is made of metal. The fan shroud 8 may be made of synthetic resin.
　ベース板２０の外形は、左右方向に長い長方形状である。ベース板２０の長手方向は、左右方向である。ベース板２０の短手方向は、上下方向である。ベース板２０の前面２０Ａ及びベース板２０の後面２０Ｂのそれぞれは平坦である。ベース板２０の前面２０Ａと後面２０Ｂとは平行である。開口２１は、ベース板２０の中央部に形成される。ファン９の少なくとも一部は、ファンシュラウド８の開口２１に配置される。 The outer shape of the base plate 20 is a rectangular shape that is long in the left-right direction. The longitudinal direction of the base plate 20 is the left-right direction. The lateral direction of the base plate 20 is the vertical direction. The front surface 20A of the base plate 20 and the rear surface 20B of the base plate 20 are flat. The front surface 20A and the rear surface 20B of the base plate 20 are parallel to each other. The opening 21 is formed in the central portion of the base plate 20. At least a portion of the fan 9 is arranged in the opening 21 of the fan shroud 8.
　壁板３０は、ベース板２０の周縁部から前方に突出する。ベース板２０と壁板３０とは一体である。本実施形態において、ベース板２０となる１枚の板の周縁部を折り曲げることによって、壁板３０が形成される。なお、ベース板２０となる板の周縁部に壁板３０となる板を溶接等により接合してもよい。 The wall plate 30 projects forward from the peripheral edge of the base plate 20. The base plate 20 and the wall plate 30 are integrated. In the present embodiment, the wall plate 30 is formed by bending the peripheral edge portion of one plate serving as the base plate 20. The plate to be the wall plate 30 may be joined to the peripheral edge of the plate to be the base plate 20 by welding or the like.
　壁板３０は、ベース板２０の長手方向である左右方向に延在する第１壁板３１と、ベース板２０の短手方向である上下方向に延在する第２壁板３２とを含む。第１壁板３１は、ベース板２０の上辺に接続される上壁板３１Ｕと、ベース板２０の下辺に接続される下壁板３１Ｂとを含む。第２壁板３２は、ベース板２０の左辺に接続される左壁板３２Ｌと、ベース板２０の右辺に接続される右壁板３２Ｒとを含む。 The wall plate 30 includes a first wall plate 31 extending in the left-right direction, which is the longitudinal direction of the base plate 20, and a second wall plate 32 extending in the vertical direction, which is the lateral direction of the base plate 20. The first wall plate 31 includes an upper wall plate 31U connected to the upper side of the base plate 20 and a lower wall plate 31B connected to the lower side of the base plate 20. The second wall plate 32 includes a left wall plate 32L connected to the left side of the base plate 20 and a right wall plate 32R connected to the right side of the base plate 20.
　上壁板３１Ｕの左端部と左壁板３２Ｌの上端部とは接続される。上壁板３１Ｕの右端部と右壁板３２Ｒの上端部とは接続される。下壁板３１Ｂの左端部と左壁板３２Ｌの下端部とは接続される。下壁板３１Ｂの右端部と右壁板３２Ｒの下端部とは接続される。壁板３０により、冷却ユニット７を通過した空気が、冷却ユニット７と壁板３０との間から壁板３０の周囲に漏出することが抑制される。冷却ユニット７を通過した空気は、開口２１のみを通過するため、冷却効率が向上する。 The left end of the upper wall plate 31U and the upper end of the left wall plate 32L are connected. The right end of the upper wall plate 31U and the upper end of the right wall plate 32R are connected. The left end of the lower wall plate 31B and the lower end of the left wall plate 32L are connected. The right end of the lower wall plate 31B and the lower end of the right wall plate 32R are connected. The wall plate 30 prevents air that has passed through the cooling unit 7 from leaking from between the cooling unit 7 and the wall plate 30 to the periphery of the wall plate 30. Since the air that has passed through the cooling unit 7 passes only through the opening 21, the cooling efficiency is improved.
　第２壁板３２は、第１壁板３１よりも開口２１から離れている。 The second wall plate 32 is farther from the opening 21 than the first wall plate 31.
　上壁板３１Ｕの下面と開口２１の縁部とは、距離Ｌａ（第１距離）だけ離れている。下壁板３１Ｂの上面と開口２１の縁部とは、距離Ｌｂ（第２距離）だけ離れている。左壁板３２Ｌの右面と開口２１の縁部とは、距離Ｌｃ（第３距離）だけ離れている。右壁板３２Ｒの左面と開口２１の縁部とは、距離Ｌｄ（第４距離）だけ離れている。 The lower surface of the upper wall plate 31U and the edge of the opening 21 are separated by a distance La (first distance). The upper surface of the lower wall plate 31B and the edge of the opening 21 are separated by a distance Lb (second distance). The right surface of the left wall plate 32L and the edge of the opening 21 are separated by a distance Lc (third distance). The left surface of the right wall plate 32R and the edge of the opening 21 are separated by a distance Ld (fourth distance).
　本実施形態において、距離Ｌａと距離Ｌｂとは実質的に等しい。距離Ｌｃと距離Ｌｄとは実質的に等しい。距離Ｌｃ及び距離Ｌｄは、距離Ｌａ及び距離Ｌｂよりも長い。 In the present embodiment, the distance La and the distance Lb are substantially equal. The distance Lc and the distance Ld are substantially equal. The distance Lc and the distance Ld are longer than the distance La and the distance Lb.
　ファンシュラウド８は、壁板３０の前端部からファン９の径方向外側に突出するフランジ５０を有する。フランジ５０の前面と冷却ユニット７の後面の少なくとも一部とが接続される。フランジ５０の前面と冷却ユニット７の後面の少なくとも一部とが接続されることにより、冷却ユニット７の後面とベース板２０の前面２０Ａと壁板３０の内面との間に閉じられた空間１５が形成される。通気口１４から冷却ユニット７に流入し、冷却ユニット７を通過した空気は、空間１５を介して、ファン９に流入する。 The fan shroud 8 has a flange 50 protruding outward in the radial direction of the fan 9 from the front end portion of the wall plate 30. At least a part of the front surface of the flange 50 and the rear surface of the cooling unit 7 are connected. By connecting the front surface of the flange 50 and at least a part of the rear surface of the cooling unit 7, a closed space 15 is created between the rear surface of the cooling unit 7, the front surface 20A of the base plate 20, and the inner surface of the wall plate 30. It is formed. The air that has flowed into the cooling unit 7 from the vent 14 and has passed through the cooling unit 7 flows into the fan 9 through the space 15.
　また、ファンシュラウド８は、開口２１の周囲に配置されるリング部材６０を有する。リング部材６０は、開口２１を囲むようにベース板２０の後面２０Ｂに設けられる。リング部材６０は、ベース板２０から後方に突出する。なお、リング部材６０は、ボルトによりベース板２０に固定されてもよい。 Further, the fan shroud 8 has a ring member 60 arranged around the opening 21. The ring member 60 is provided on the rear surface 20B of the base plate 20 so as to surround the opening 21. The ring member 60 projects rearward from the base plate 20. The ring member 60 may be fixed to the base plate 20 by bolts.
　ガイド部材４０は、ファン９の径方向に空気をガイドする。ガイド部材４０は、ファン９の周方向に流通する空気を径方向に整流する。ガイド部材４０は、第１壁板３１と開口２１との間に配置される。上述のように、第１壁板３１は、上壁板３１Ｕ及び下壁板３１Ｂを含む。ガイド部材４０は、上壁板３１Ｕと開口２１との間及び下壁板３１Ｂと開口２１との間に配置される。 The guide member 40 guides air in the radial direction of the fan 9. The guide member 40 rectifies the air flowing in the circumferential direction of the fan 9 in the radial direction. The guide member 40 is arranged between the first wall plate 31 and the opening 21. As described above, the first wall plate 31 includes an upper wall plate 31U and a lower wall plate 31B. The guide member 40 is arranged between the upper wall plate 31U and the opening 21 and between the lower wall plate 31B and the opening 21.
　上述のように、ベース板２０は、左右方向に長い長方形状である。ガイド部材４０は、第１壁板３１及び第２壁板３２のうち開口２１との距離が短い第１壁板３１と開口２１との間において、ベース板２０の長手方向に配置される。 As described above, the base plate 20 has a rectangular shape that is long in the left-right direction. The guide member 40 is arranged in the longitudinal direction of the base plate 20 between the first wall plate 31 and the opening 21 which have a short distance from the opening 21 among the first wall plate 31 and the second wall plate 32.
　ガイド部材４０は、ベース板２０の長手方向である左右方向において、ベース板２０の左端部と中央部との間及びベース板２０の右端部と中央部との間に配置される。 The guide member 40 is arranged between the left end portion and the central portion of the base plate 20 and between the right end portion and the central portion of the base plate 20 in the left-right direction which is the longitudinal direction of the base plate 20.
　すなわち、ガイド部材４０は、開口２１の周囲の４箇所に配置される。以下の説明において、上壁板３１Ｕと開口２１との間において、ベース板２０の左端部と中央部との間に配置されるガイド部材４０を適宜、ガイド部材４０Ａ、と称し、ベース板２０の右端部と中央部との間に配置されるガイド部材４０を適宜、ガイド部材４０Ｂ、と称する。下壁板３１Ｂと開口２１との間において、ベース板２０の左端部と中央部との間に配置されるガイド部材４０を適宜、ガイド部材４０Ｃ、と称し、ベース板２０の右端部と中央部との間に配置されるガイド部材４０を適宜、ガイド部材４０Ｄ、と称する。 That is, the guide members 40 are arranged at four locations around the opening 21. In the following description, the guide member 40 arranged between the upper wall plate 31U and the opening 21 between the left end portion and the central portion of the base plate 20 is appropriately referred to as a guide member 40A, and the base plate 20 The guide member 40 arranged between the right end portion and the central portion is appropriately referred to as a guide member 40B. The guide member 40 arranged between the left end portion and the central portion of the base plate 20 between the lower wall plate 31B and the opening 21 is appropriately referred to as a guide member 40C, and the right end portion and the central portion of the base plate 20. The guide member 40 arranged between the guide member 40 and the guide member 40 is appropriately referred to as a guide member 40D.
　ガイド部材４０は、ベース板２０の長手方向である左右方向及びベース板２０の短手方向である上下方向のそれぞれについて対称に配置される。すなわち、回転軸ＲＸを通り左右方向に延伸する第１対称軸ＳＬ１及び回転軸ＲＸを通り上下方向に延伸する第２対称軸ＳＬ２を規定した場合、上壁板３１Ｕと開口２１との間に配置されるガイド部材４０Ａ，４０Ｂの外形及び位置と、下壁板３１Ｂと開口２１との間に配置されるガイド部材４０Ｃ，４０Ｄの外形及び位置とは、第１対称軸ＳＬ１について線対称である。左右方向においてベース板２０の左端部と中央部との間に配置されるガイド部材４０Ａ，４０Ｃの外形及び位置と、ベース板２０の右端部と中央部との間に配置されるガイド部材４０Ｂ，４０Ｄの外形及び位置とは、第２対称軸ＳＬ２について線対称である。 The guide members 40 are symmetrically arranged in the left-right direction, which is the longitudinal direction of the base plate 20, and the vertical direction, which is the lateral direction of the base plate 20. That is, when the first symmetry axis SL1 extending in the left-right direction through the rotation axis RX and the second symmetry axis SL2 extending in the vertical direction through the rotation axis RX are defined, they are arranged between the upper wall plate 31U and the opening 21. The outer shape and position of the guide members 40A and 40B and the outer shape and position of the guide members 40C and 40D arranged between the lower wall plate 31B and the opening 21 are line-symmetrical with respect to the first symmetry axis SL1. The outer shape and position of the guide members 40A and 40C arranged between the left end portion and the central portion of the base plate 20 in the left-right direction, and the guide members 40B, arranged between the right end portion and the central portion of the base plate 20. The outer shape and position of 40D are line symmetric with respect to the second axis of symmetry SL2.
　なお、第１対称軸ＳＬ１は、回転軸ＲＸを通らなくてもよい。第１対称軸ＳＬ１は、回転軸ＲＸよりも上方に規定されてもよいし、下方に規定されてもよい。なお、第２対称軸ＳＬ２は、回転軸ＲＸを通らなくてもよい。第２対称軸ＳＬ２は、回転軸ＲＸよりも左方に規定されてもよいし、右方に規定されてもよい。 The first symmetry axis SL1 does not have to pass through the rotation axis RX. The first axis of symmetry SL1 may be defined above or below the rotation axis RX. The second axis of symmetry SL2 does not have to pass through the rotation axis RX. The second axis of symmetry SL2 may be defined to the left of the rotation axis RX, or may be defined to the right.
　複数のガイド部材４０（４０Ａ，４０Ｂ，４０Ｃ，４０Ｄ）のそれぞれは、第１ガイド部材４１と、ベース板２０の長手方向である左右方向において第１ガイド部材４１よりもベース板２０の中央部に近い第２ガイド部材４２とを含む。第２ガイド部材４２は、左右方向において第１ガイド部材４１とベース板２０の中央部との間に配置される。第１ガイド部材４１は、左右方向においてベース板２０の端部と第２ガイド部材４２との間に配置される。 Each of the plurality of guide members 40 (40A, 40B, 40C, 40D) is located at the center of the first guide member 41 and the base plate 20 rather than the first guide member 41 in the left-right direction which is the longitudinal direction of the base plate 20. Includes a close second guide member 42. The second guide member 42 is arranged between the first guide member 41 and the central portion of the base plate 20 in the left-right direction. The first guide member 41 is arranged between the end portion of the base plate 20 and the second guide member 42 in the left-right direction.
［ガイド部材］
　図４は、本実施形態に係るガイド部材４０を示す斜視図であり、図３のＡ部分の拡大図に相当する。ガイド部材４０は、ファン９の径方向に空気をガイドする。ファン９の径方向とは、回転軸ＲＸの放射方向をいう。 [Guide member]
FIG. 4 is a perspective view showing the guide member 40 according to the present embodiment, and corresponds to an enlarged view of a portion A in FIG. The guide member 40 guides air in the radial direction of the fan 9. The radial direction of the fan 9 means the radial direction of the rotating shaft RX.
　第１ガイド部材４１は、プレート状の部材である。第１ガイド部材４１は、回転軸ＲＸの放射方向と平行なガイド面４１Ａ及びガイド面４１Ｂと、回転軸ＲＸの放射方向内側を向く内端面４１Ｃと、回転軸ＲＸの放射方向外側を向く外端面４１Ｄと、前方を向く前面４１Ｅと、後方を向く後面４１Ｆとを有する。 The first guide member 41 is a plate-shaped member. The first guide member 41 includes a guide surface 41A and a guide surface 41B parallel to the radial direction of the rotating shaft RX, an inner end surface 41C facing inward in the radial direction of the rotating shaft RX, and an outer end surface facing outward in the radial direction of the rotating shaft RX. It has a 41D, a front surface 41E facing forward, and a rear surface 41F facing backward.
　ガイド面４１Ａとガイド面４１Ｂとは平行である。ガイド面４１Ａ及びガイド面４１Ｂは、回転軸ＲＸの放射方向と平行であり、回転軸ＲＸと平行である。 The guide surface 41A and the guide surface 41B are parallel. The guide surface 41A and the guide surface 41B are parallel to the radial direction of the rotation axis RX and parallel to the rotation axis RX.
　外端面４１Ｄは、第１壁板３１の内面３３と接続される。なお、外端面４１Ｄは、第１壁板３１の内面３３と間隙を介して対向してもよい。 The outer end surface 41D is connected to the inner surface 33 of the first wall plate 31. The outer end surface 41D may face the inner surface 33 of the first wall plate 31 via a gap.
　前面４１Ｅは、第１壁板３１の前面３４よりも後方に配置される。本実施形態において、第１壁板３１の前面３４は、フランジ５０の前面を含む。すなわち、前後方向において、第１ガイド部材４１の寸法は、第１壁板３１の寸法よりも小さい。なお、前後方向において、第１ガイド部材４１の前面４１Ｅの位置と第１壁板３１の前面３４の位置とは同じでもよい。第１ガイド部材４１の前面４１Ｅが第１壁板３１の前面３４よりも前方に突出していなければよい。 The front surface 41E is arranged behind the front surface 34 of the first wall plate 31. In the present embodiment, the front surface 34 of the first wall plate 31 includes the front surface of the flange 50. That is, in the front-rear direction, the size of the first guide member 41 is smaller than the size of the first wall plate 31. In the front-rear direction, the position of the front surface 41E of the first guide member 41 and the position of the front surface 34 of the first wall plate 31 may be the same. The front surface 41E of the first guide member 41 may not protrude forward from the front surface 34 of the first wall plate 31.
　後面４１Ｆは、ベース板２０の前面２０Ａに接続される。 The rear surface 41F is connected to the front surface 20A of the base plate 20.
　第２ガイド部材４２は、左右方向において第１ガイド部材４１よりもベース板２０の中心に近い位置に配置される。 The second guide member 42 is arranged at a position closer to the center of the base plate 20 than the first guide member 41 in the left-right direction.
　第２ガイド部材４２は、プレート状の部材である。第２ガイド部材４２は、回転軸ＲＸの放射方向と平行なガイド面４２Ａ及びガイド面４２Ｂと、回転軸ＲＸの放射方向内側を向く内端面４２Ｃと、回転軸ＲＸの放射方向外側を向く外端面４２Ｄと、前方を向く前面４２Ｅと、後方を向く後面４２Ｆとを有する。 The second guide member 42 is a plate-shaped member. The second guide member 42 includes a guide surface 42A and a guide surface 42B parallel to the radial direction of the rotating shaft RX, an inner end surface 42C facing inward in the radial direction of the rotating shaft RX, and an outer end surface facing outward in the radial direction of the rotating shaft RX. It has a 42D, a front surface 42E facing forward, and a rear surface 42F facing rearward.
　ガイド面４２Ａとガイド面４２Ｂとは平行である。ガイド面４２Ａ及びガイド面４２Ｂは、回転軸ＲＸの放射方向と平行であり、回転軸ＲＸと平行である。 The guide surface 42A and the guide surface 42B are parallel. The guide surface 42A and the guide surface 42B are parallel to the radial direction of the rotation axis RX and parallel to the rotation axis RX.
　外端面４２Ｄは、第１壁板３１の内面３３と接続される。なお、外端面４２Ｄは、第１壁板３１の内面３３と間隙を介して対向してもよい。 The outer end surface 42D is connected to the inner surface 33 of the first wall plate 31. The outer end surface 42D may face the inner surface 33 of the first wall plate 31 via a gap.
　前面４２Ｅは、第１壁板３１の前面３４よりも後方に配置される。すなわち、前後方向において、第２ガイド部材４２の寸法は、第１壁板３１の寸法よりも小さい。なお、前後方向において、第２ガイド部材４２の前面４２Ｅの位置と第１壁板３１の前面３４の位置とは同じでもよい。第２ガイド部材４２の前面４２Ｅが第１壁板３１の前面３４よりも前方に突出していなければよい。 The front surface 42E is arranged behind the front surface 34 of the first wall plate 31. That is, in the front-rear direction, the size of the second guide member 42 is smaller than the size of the first wall plate 31. In the front-rear direction, the position of the front surface 42E of the second guide member 42 and the position of the front surface 34 of the first wall plate 31 may be the same. The front surface 42E of the second guide member 42 may not protrude forward from the front surface 34 of the first wall plate 31.
　後面４２Ｆは、ベース板２０の前面２０Ａに接続される。 The rear surface 42F is connected to the front surface 20A of the base plate 20.
［作用］
　図５は、比較例に係るファンシュラウド８Ｊ及びファン９を前方から見た図である。比較例に係るファンシュラウド８Ｊは、ガイド部材４０を有しない。 [Action]
FIG. 5 is a front view of the fan shroud 8J and the fan 9 according to the comparative example. The fan shroud 8J according to the comparative example does not have the guide member 40.
　ファン９が回転すると、冷却ユニット７を通過した空気は、空間１５に流入する。空間１５に流入した空気の少なくとも一部は、壁板３０の内面に当たった後、ベース板２０の前面２０Ａを流れながらファン９に流入する。 When the fan 9 rotates, the air that has passed through the cooling unit 7 flows into the space 15. At least a part of the air flowing into the space 15 hits the inner surface of the wall plate 30, and then flows into the fan 9 while flowing through the front surface 20A of the base plate 20.
　開口２１の内縁部における空気の流通方向は、ファン９の周方向とファン９の径方向とに分けられる。第１壁板３１と開口２１との間の第１空間１５Ａにおいては、空気はファン９の周方向に流通する。第２壁板３２と開口２１との間の第２空間１５Ｂにおいては、空気はファン９の径方向に流通する。第１壁板３１と開口２１との距離（Ｌａ，Ｌｂ）は短く、第２壁板３２と開口２１との距離（Ｌｃ，Ｌｄ）は長い。第１空間１５Ａは小さく、第２空間１５Ｂは大きい。第２空間１５Ｂから第１空間１５Ａに空気が流入することにより、第１空間１５Ａにおいて、空気は周方向に流通する。 The air flow direction at the inner edge of the opening 21 is divided into a circumferential direction of the fan 9 and a radial direction of the fan 9. In the first space 15A between the first wall plate 31 and the opening 21, air circulates in the circumferential direction of the fan 9. In the second space 15B between the second wall plate 32 and the opening 21, air circulates in the radial direction of the fan 9. The distance (La, Lb) between the first wall plate 31 and the opening 21 is short, and the distance (Lc, Ld) between the second wall plate 32 and the opening 21 is long. The first space 15A is small and the second space 15B is large. As the air flows from the second space 15B to the first space 15A, the air circulates in the circumferential direction in the first space 15A.
　すなわち、第１空間１５Ａにおいては、空気は専ら周方向に流通し、第２空間１５Ｂにおいては、空気は専ら径方向に流通する。ファン９の周囲の空間の位置に応じてファン９に流入する空気の流通方向が変化すると、圧力変化が生じ、騒音が発生する。 That is, in the first space 15A, the air circulates exclusively in the circumferential direction, and in the second space 15B, the air circulates exclusively in the radial direction. When the flow direction of the air flowing into the fan 9 changes according to the position of the space around the fan 9, a pressure change occurs and noise is generated.
　図６は、本実施形態に係るファンシュラウド８及びファン９を前方から見た図である。本実施形態においては、第１壁板３１と開口２１との間の第１空間１５Ａにガイド部材４０が配置される。ガイド部材４０は、ファン９の径方向に空気をガイドする。これにより、第１空間１５Ａにおける開口２１の内縁部において、空気が周方向に流通することが抑制される。 FIG. 6 is a front view of the fan shroud 8 and the fan 9 according to the present embodiment. In the present embodiment, the guide member 40 is arranged in the first space 15A between the first wall plate 31 and the opening 21. The guide member 40 guides air in the radial direction of the fan 9. As a result, air is suppressed from flowing in the circumferential direction at the inner edge of the opening 21 in the first space 15A.
　第１ガイド部材４１は、ベース板２０の長手方向において、ベース板２０の一端部と中央部との間及びベース板２０の他端部と中央部との間に配置される。第１ガイド部材４１が配置されることにより、第１空間１５Ａにおいて空気が周方向に流通することが抑制される。 The first guide member 41 is arranged between one end of the base plate 20 and the central portion and between the other end and the central portion of the base plate 20 in the longitudinal direction of the base plate 20. By arranging the first guide member 41, it is suppressed that air flows in the circumferential direction in the first space 15A.
　ベース板２０の長手方向において第１ガイド部材４１よりもベース板２０の中央部に近い位置に第２ガイド部材４２が配置される。そのため、第１ガイド部材４１により流通方向を径方向に変換されなかった空気が存在しても、第２ガイド部材４２により径方向に変換される。 The second guide member 42 is arranged at a position closer to the central portion of the base plate 20 than the first guide member 41 in the longitudinal direction of the base plate 20. Therefore, even if there is air whose flow direction has not been converted in the radial direction by the first guide member 41, it is converted in the radial direction by the second guide member 42.
　なお、ガイド部材４０は、左右方向においてベース板２０の中央部に配置されてもよい。左右方向における第１空間１５Ａの中央部においては、左方から第１空間１５Ａに流入した空気と右方から第１空間１５Ａに流入した空気とがぶつかるため、ガイド部材４０がなくても、空気は径方向に流通することができる。 The guide member 40 may be arranged at the center of the base plate 20 in the left-right direction. In the central portion of the first space 15A in the left-right direction, the air flowing into the first space 15A from the left and the air flowing into the first space 15A from the right collide with each other, so that even if the guide member 40 is not provided, the air Can be distributed in the radial direction.
　ガイド部材４０の高さは、空気が周方向に流通している空間の高さに応じて決定される。ガイド部材４０の高さは、ガイド部材４０の前後方向の寸法であり、第１ガイド部材４１の前面４１Ｅと第１壁板３１の前面３４との相対位置を含む。例えば空気がベース板２０の前面２０Ａから５０ｍｍの空間において周方向に流通している場合、ガイド部材４０の高さも５０ｍｍ以上にすることが好ましい。 The height of the guide member 40 is determined according to the height of the space in which air is circulating in the circumferential direction. The height of the guide member 40 is a dimension in the front-rear direction of the guide member 40, and includes a relative position between the front surface 41E of the first guide member 41 and the front surface 34 of the first wall plate 31. For example, when air circulates in the circumferential direction in a space of 50 mm from the front surface 20A of the base plate 20, the height of the guide member 40 is preferably 50 mm or more.
　なお、ファン９の回転方向は限定されない。ファン９が正方向に回転する場合及びファン９が逆方向に回転する場合の両方において、ファン９の周方向に流通する空気がガイド部材４０により径方向に整流されることにより、騒音の発生が抑制される。 The rotation direction of the fan 9 is not limited. In both the case where the fan 9 rotates in the forward direction and the case where the fan 9 rotates in the reverse direction, the air flowing in the circumferential direction of the fan 9 is rectified in the radial direction by the guide member 40, so that noise is generated. It is suppressed.
［効果］
　以上説明したように、本実施形態によれば、第１壁板３１と開口２１との間の第１空間１５Ａにガイド部材４０が配置される。ガイド部材４０は、ファン９の径方向に空気をガイドする。そのため、空気が周方向に流通しながらファン９に流入することが抑制される。したがって、騒音の発生が抑制される。 [effect]
As described above, according to the present embodiment, the guide member 40 is arranged in the first space 15A between the first wall plate 31 and the opening 21. The guide member 40 guides air in the radial direction of the fan 9. Therefore, it is suppressed that the air flows into the fan 9 while flowing in the circumferential direction. Therefore, the generation of noise is suppressed.
　ファン９の周囲の空間の位置に応じてファン９に流入する空気の流通方向が変化すると、圧力変化が生じ、騒音が発生する。本実施形態によれば、ガイド部材４０により、空気の流通方向を一定にすることができるので、騒音の発生を抑制することができる。 When the flow direction of the air flowing into the fan 9 changes according to the position of the space around the fan 9, the pressure changes and noise is generated. According to the present embodiment, the guide member 40 can make the air flow direction constant, so that the generation of noise can be suppressed.
　また、ファン９の外縁部と開口２１の内縁部との間においても、空気が周方向に流通することが抑制される。これにより、騒音の発生が効果的に抑制される。 Also, air is suppressed from flowing in the circumferential direction between the outer edge of the fan 9 and the inner edge of the opening 21. As a result, the generation of noise is effectively suppressed.
　本実施形態において、ベース板２０は長方形状である。ベース板２０の形状及び寸法は、冷却ユニット７の形状及び寸法に合わせられる。冷却ユニット７が左右方向に長い直方体状であり、ファンシュラウド８が左右方向に長い直方体状であることにより、ファンシュラウド８が設置される作業車両１の上下方向の大型化が抑制される。例えば作業車両１のボンネットの高さが抑制されるので、作業車両１の運転者の視界が確保される。 In the present embodiment, the base plate 20 has a rectangular shape. The shape and dimensions of the base plate 20 are matched to the shape and dimensions of the cooling unit 7. Since the cooling unit 7 has a rectangular parallelepiped shape that is long in the left-right direction and the fan shroud 8 has a rectangular parallelepiped shape that is long in the left-right direction, the work vehicle 1 in which the fan shroud 8 is installed is suppressed from being enlarged in the vertical direction. For example, since the height of the bonnet of the work vehicle 1 is suppressed, the visibility of the driver of the work vehicle 1 is secured.
［その他の実施形態］
　上述の実施形態において、距離Ｌａと距離Ｌｂとは実質的に等しいこととした。また、距離Ｌｃと距離Ｌｄとは実質的に等しいこととした。距離Ｌａと距離Ｌｂとは異なってもよい。距離Ｌｃと距離Ｌｄとは異なってもよい。 [Other Embodiments]
In the above-described embodiment, the distance La and the distance Lb are substantially equal to each other. Further, the distance Lc and the distance Ld are substantially equal to each other. The distance La and the distance Lb may be different. The distance Lc and the distance Ld may be different.
　上述の実施形態において、ガイド部材４０は、第１ガイド部材４１及び第２ガイド部材４２を含むこととした。第２ガイド部材４２は省略されてもよい。空気をファン９の径方向にガイドすることができれば、ガイド部材４０の数は１枚でもよいし、２枚以上の任意の複数枚でもよい。 In the above-described embodiment, the guide member 40 includes the first guide member 41 and the second guide member 42. The second guide member 42 may be omitted. As long as air can be guided in the radial direction of the fan 9, the number of guide members 40 may be one, or any plurality of two or more.
　上述の実施形態において、冷却ユニット７は、エンジン５を冷却するためのラジエータを含むこととした。冷却ユニット７は、オイルクーラ又はアフタクーラを含んでもよい。 In the above-described embodiment, the cooling unit 7 includes a radiator for cooling the engine 5. The cooling unit 7 may include an oil cooler or an aftercooler.
　上述の実施形態において、ファン９はエンジン５が発生する動力に基づいて回転することとした。ファン９は、エンジン５とは別の動力源から供給される動力に基づいて回転してもよい。例えば、ファン９は、バッテリから供給される電力に基づいて回転する電動ファンでもよい。 In the above-described embodiment, the fan 9 is determined to rotate based on the power generated by the engine 5. The fan 9 may rotate based on power supplied from a power source other than the engine 5. For example, the fan 9 may be an electric fan that rotates based on the electric power supplied from the battery.
　上述の実施形態においては、作業車両１がアーティキュレート式ダンプトラックであることした。ファンシュラウド８が設けられる作業車両１は、例えばリジット式ダンプトラックでもよいし、グレーダやホイールローダ、油圧ショベルなど、他の作業車両でもよい。 In the above-described embodiment, the work vehicle 1 is an articulated dump truck. The work vehicle 1 provided with the fan shroud 8 may be, for example, a rigid dump truck, or another work vehicle such as a grader, a wheel loader, or a hydraulic excavator.
　例えば、作業車両１が油圧ショベルである場合、油圧ショベルの旋回体に運転室が設けられる。冷却ユニット７は、旋回体において運転室の後方に搭載される。上述のように、冷却ユニット７が左右方向に長い直方体状であり、ファンシュラウド８が左右方向に長い直方体状であるため、油圧ショベルにおいては、運転室の後方の旋回体の高さが抑制される。そのため、油圧ショベルにおいても、運転者の視界が確保される。 For example, when the work vehicle 1 is a hydraulic excavator, a driver's cab is provided on the swivel body of the hydraulic excavator. The cooling unit 7 is mounted behind the driver's cab in the swivel body. As described above, since the cooling unit 7 has a rectangular parallelepiped shape long in the left-right direction and the fan shroud 8 has a rectangular parallelepiped shape long in the left-right direction, the height of the swivel body behind the driver's cab is suppressed in the hydraulic excavator. To. Therefore, the driver's field of view is secured even in the hydraulic excavator.
　１…作業車両、２…車体、２Ｆ…前部車体、２Ｒ…後部車体、３…ダンプボディ、４…走行装置、５…エンジン、６…油圧ポンプ、７…冷却ユニット、８…ファンシュラウド、９…ファン、１０…運転室、１１…関節機構、１２…回転機構、１３…車輪、１３Ｆ…前輪、１３Ｒ…後輪、１４…通気口、１５…空間、１５Ａ…第１空間、１５Ｂ…第２空間、２０…ベース板、２０Ａ…前面、２０Ｂ…後面、２１…開口、３０…壁板、３１…第１壁板、３１Ｂ…下壁板、３１Ｕ…上壁板、３２…第２壁板、３２Ｌ…左壁板、３２Ｒ…右壁板、３３…内面、３４…前面、４０…ガイド部材、４０Ａ…ガイド部材、４０Ｂ…ガイド部材、４０Ｃ…ガイド部材、４０Ｄ…ガイド部材、４１…第１ガイド部材、４１Ａ…ガイド面、４１Ｂ…ガイド面、４１Ｃ…内端面、４１Ｄ…外端面、４１Ｅ…前面、４１Ｆ…後面、４２…第２ガイド部材、４２Ａ…ガイド面、４２Ｂ…ガイド面、４２Ｃ…内端面、４２Ｄ…外端面、４２Ｅ…前面、４２Ｆ…後面、５０…フランジ、６０…リング部材。 1 ... work vehicle, 2 ... car body, 2F ... front car body, 2R ... rear car body, 3 ... dump body, 4 ... running device, 5 ... engine, 6 ... hydraulic pump, 7 ... cooling unit, 8 ... fan shroud, 9 ... Fan, 10 ... Driver's cab, 11 ... Joint mechanism, 12 ... Rotation mechanism, 13 ... Wheel, 13F ... Front wheel, 13R ... Rear wheel, 14 ... Vent, 15 ... Space, 15A ... First space, 15B ... Second Space, 20 ... base plate, 20A ... front, 20B ... rear surface, 21 ... opening, 30 ... wall plate, 31 ... first wall plate, 31B ... lower wall plate, 31U ... upper wall plate, 32 ... second wall plate, 32L ... left wall plate, 32R ... right wall plate, 33 ... inner surface, 34 ... front surface, 40 ... guide member, 40A ... guide member, 40B ... guide member, 40C ... guide member, 40D ... guide member, 41 ... first guide Member, 41A ... Guide surface, 41B ... Guide surface, 41C ... Inner end surface, 41D ... Outer end surface, 41E ... Front, 41F ... Rear surface, 42 ... Second guide member, 42A ... Guide surface, 42B ... Guide surface, 42C ... Inner End face, 42D ... outer end face, 42E ... front surface, 42F ... rear surface, 50 ... flange, 60 ... ring member.

Claims (7)

  1. 　開口を有し前記開口にファンが配置されるベース板と、
    　前記ベース板の周縁部から第１方向に突出する壁板と、
    　前記第１方向を向く前記ベース板の表面に配置され前記ファンの径方向に気体をガイドするガイド部材と、を備え、
    　前記壁板は、第１壁板と、前記第１壁板よりも前記開口から離れている第２壁板と、を含み、
    　前記ガイド部材は、前記第１壁板と前記開口との間に配置される、
    　ファンシュラウド。     A base plate having an opening and a fan arranged in the opening,
    A wall plate protruding in the first direction from the peripheral edge of the base plate,
    A guide member arranged on the surface of the base plate facing the first direction and guiding gas in the radial direction of the fan is provided.
    The wallboard includes a first wallboard and a second wallboard that is more distant from the opening than the first wallboard.
    The guide member is arranged between the first wall plate and the opening.
    Fan shroud.
  2. 　前記ベース板の外形は、長方形状であり、
    　前記第１壁板は、前記ベース板の長手方向に延在し、
    　前記第２壁板は、前記ベース板の短手方向に延在する、
    　請求項１に記載のファンシュラウド。     The outer shape of the base plate is rectangular and has a rectangular shape.
    The first wall plate extends in the longitudinal direction of the base plate and extends.
    The second wall plate extends in the lateral direction of the base plate.
    The fan shroud according to claim 1.
  3. 　前記開口は、前記ベース板の中央部に形成され、
    　前記ガイド部材は、前記長手方向において、前記ベース板の一端部と中央部との間及び前記ベース板の他端部と中央部との間に配置される、
    　請求項２に記載のファンシュラウド。     The opening is formed in the central portion of the base plate.
    The guide member is arranged in the longitudinal direction between one end and the center of the base plate and between the other end and the center of the base plate.
    The fan shroud according to claim 2.
  4. 　前記第１壁板は、上壁板及び下壁板を含み、
    　前記第２壁板は、左壁板及び右壁板を含み、
    　前記ガイド部材は、前記上壁板と前記開口との間及び前記下壁板と前記開口との間に配置される、
    　請求項２又は請求項３に記載のファンシュラウド。     The first wall plate includes an upper wall plate and a lower wall plate.
    The second wall plate includes a left wall plate and a right wall plate.
    The guide member is arranged between the upper wall plate and the opening and between the lower wall plate and the opening.
    The fan shroud according to claim 2 or 3.
  5. 　前記ガイド部材は、前記長手方向及び前記短手方向のそれぞれについて対称に配置される、
    　請求項４に記載のファンシュラウド。     The guide members are arranged symmetrically in each of the longitudinal direction and the lateral direction.
    The fan shroud according to claim 4.
  6. 　前記ガイド部材は、第１ガイド部材と、前記長手方向において前記第１ガイド部材よりも前記ベース板の中央部に近い第２ガイド部材と、を含む、
    　請求項２から請求項５のいずれか一項に記載のファンシュラウド。     The guide member includes a first guide member and a second guide member that is closer to the center of the base plate than the first guide member in the longitudinal direction.
    The fan shroud according to any one of claims 2 to 5.
  7. 　冷却ユニットと、
    　前記冷却ユニットに接続される請求項１から請求項６のいずれか一項に記載のファンシュラウドと、
    　前記ファンシュラウドの開口に配置されるファンと、を備える、
    　作業車両。     With the cooling unit
    The fan shroud according to any one of claims 1 to 6, which is connected to the cooling unit.
    A fan arranged in the opening of the fan shroud.
    Work vehicle.
PCT/JP2020/019461 2019-05-17 2020-05-15 Fan shroud, and work vehicle WO2020235483A1 (en)

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JP2019-093931 2019-05-17

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57153727U (en) * 1981-03-25 1982-09-27
JP2007009729A (en) * 2005-06-28 2007-01-18 Shin Caterpillar Mitsubishi Ltd Cooling device and cooling device of operating machine
JP2010265809A (en) * 2009-05-14 2010-11-25 Mitsubishi Heavy Ind Ltd Heat exchange module for vehicle
JP2014181662A (en) * 2013-03-21 2014-09-29 Nippon Soken Inc Blower

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017212893A1 (en) * 2016-06-09 2017-12-14 株式会社デンソー Blowing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57153727U (en) * 1981-03-25 1982-09-27
JP2007009729A (en) * 2005-06-28 2007-01-18 Shin Caterpillar Mitsubishi Ltd Cooling device and cooling device of operating machine
JP2010265809A (en) * 2009-05-14 2010-11-25 Mitsubishi Heavy Ind Ltd Heat exchange module for vehicle
JP2014181662A (en) * 2013-03-21 2014-09-29 Nippon Soken Inc Blower

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