WO2023162556A1 - Construction machine - Google Patents

Construction machine Download PDF

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Publication number
WO2023162556A1
WO2023162556A1 PCT/JP2023/002154 JP2023002154W WO2023162556A1 WO 2023162556 A1 WO2023162556 A1 WO 2023162556A1 JP 2023002154 W JP2023002154 W JP 2023002154W WO 2023162556 A1 WO2023162556 A1 WO 2023162556A1
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WO
WIPO (PCT)
Prior art keywords
bonnet
opening
spacer
frame member
machine room
Prior art date
Application number
PCT/JP2023/002154
Other languages
French (fr)
Japanese (ja)
Inventor
一輝 品村
Original Assignee
コベルコ建機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コベルコ建機株式会社 filed Critical コベルコ建機株式会社
Publication of WO2023162556A1 publication Critical patent/WO2023162556A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • 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

Definitions

  • the present invention relates to construction machinery.
  • construction machines such as hydraulic excavators are known that are equipped with a lower traveling body and an upper revolving body.
  • the upper revolving body has a revolving frame, and the revolving frame is mounted on the lower traveling body so as to be able to revolve.
  • the upper revolving structure includes a machine room arranged on the revolving frame, and the machine room accommodates power equipment such as a hydraulic pump and an engine.
  • Patent Document 1 discloses a construction machine with a bonnet that covers the upper surface of the machine room.
  • the bonnet is divided into a plurality of covers arranged in the width direction of the upper revolving structure, that is, an engine upper cover and a heat exchanger upper cover.
  • the machine room that accommodates it may be expanded in the width direction of the upper rotating body. This expansion is accompanied by an increase in size and weight of the bonnet that covers the upper surface of the machine room.
  • An object of the present invention is to provide a construction machine that includes a machine room and a bonnet that covers the machine room, and that can efficiently accommodate expansion of the machine room in the width direction.
  • the upper rotating body includes a front frame member, a rear frame member, a first bonnet, a second bonnet, a bonnet spacer, and a beam member.
  • the front frame member extends in the width direction of the upper rotating body.
  • the rear frame member is arranged behind the front frame member in the front-rear direction of the upper revolving body, and between the front frame member and the rear frame member, an upper opening of a machine room for accommodating an engine is formed. extends in the width direction of the upper rotating body in a defined manner.
  • the first bonnet covers the first portion of the machine room above the first portion.
  • the second bonnet is arranged with a space between the first bonnet and the second bonnet in the width direction of the upper rotating body, and is positioned above the second portion of the machine room. cover.
  • the bonnet spacer is arranged to block the space interposed between the first bonnet and the second bonnet, is connected to the front frame member and the rear frame member, and is located above an intermediate portion of the machine room. to cover the intermediate portion.
  • the intermediate portion is the portion between the first portion and the second portion.
  • the beam member connects the front frame member and the rear frame member in the longitudinal direction above the engine.
  • the beam member is arranged so as to include a portion that overlaps the bonnet spacer in plan view.
  • FIG. 1 is a side view of a construction machine according to an embodiment
  • FIG. FIG. 4 is a perspective view of an upper rotating body of the construction machine
  • FIG. 4 is an enlarged perspective view of a main portion of the upper rotating body
  • FIG. 4 is a plan view of a first bonnet, a bonnet spacer and a second bonnet in the upper rotating body
  • FIG. 4 is a perspective view showing a machine room frame of the upper swing structure and a beam member fixed to the machine room frame
  • FIG. 4 is a perspective view showing a state in which the first bonnet, the bonnet spacer, and the second bonnet are removed from the upper revolving body
  • FIG. 4 is a perspective view showing a state in which the second bonnet of the upper rotating body is at an open position
  • FIG. 4 is a perspective view showing the machine room frame and a bonnet spacer fixed thereto;
  • FIG. 4 is a perspective view showing a state in which the second bonnet and the intermediate opening/closing member are in open positions;
  • FIG. 4 is a plan view showing a state in which the second bonnet and the intermediate opening/closing member are in open positions;
  • 5 is a diagram showing a cross section along line XI-XI of FIG. 4;
  • FIG. 1 shows a construction machine 10 according to the embodiment, and the construction machine 10 is a hydraulic excavator in this embodiment.
  • the construction machine 10 includes a crawler-type lower running body 11 , an upper revolving body 12 rotatably mounted on the lower running body 11 , and an attachment 13 .
  • the upper revolving body 12 includes a cab 14 , a machine room 15 , a revolving frame 16 , a hydraulic oil tank 17 , a fuel tank 18 , a counterweight 19 , an air cleaner 20 , a central scaffolding 21 and a lifting step 22 .
  • the revolving frame 16 is a can manufacturing structure, and is disposed above the lower traveling body 11 so as to be able to revolve.
  • the attachment 13 , the cab 14 , the machine room 15 , the hydraulic oil tank 17 and the fuel tank 18 are arranged on the revolving frame 16 .
  • the attachment 13 is connected to the front part of the revolving frame 16 and includes a boom 13a, an arm 13b, a bucket 13c and a plurality of hydraulic cylinders 18d.
  • Each of the plurality of hydraulic cylinders 13d can be telescopically operated by hydraulic pressure, and the boom 13a, the arm 13b, and the bucket 13c rotate along with the telescopic motion. Work such as excavation can be performed by hydraulically controlling the telescopic motion.
  • the cab 14 is a driver's cab and allows the operation of the attachment 13 inside the cab 14 .
  • the cab 14 has, for example, a rectangular box shape, and is installed on the front portion of the revolving frame 16 so as to be adjacent to the attachment 13 and the upper revolving body 12 in the left-right direction, that is, the width direction.
  • the fuel tank 18 is arranged behind the cab 14 .
  • the air cleaner 20 is arranged above the fuel tank 18 to filter the intake air of the engine 90 .
  • the hydraulic oil tank 17 is arranged on the side of the fuel tank 18 and the air cleaner 20, and extends in the width direction of the upper revolving body 12 with respect to the fuel tank 18 and the air cleaner 20 with the central scaffold 21 interposed therebetween. opposite.
  • the elevating step 22 is located in front of the hydraulic oil tank 17 and guides the worker to the central scaffolding 21 .
  • the machine room 15 is defined on the rear portion of the revolving frame 16 and extends in the width direction of the upper revolving body 12 .
  • the upper swing structure 12 includes a machine room frame 60 , which is mounted on the swing frame 16 to define the machine room 15 .
  • the machine room 15 houses power equipment, which includes an exhaust gas aftertreatment device 80, the engine 90 and a hydraulic pump (not shown).
  • the machine room 15 is covered by the hydraulic oil tank 17 and the fuel tank 18 on the front side of the machine room 15, covered by a pair of side covers 23 on the left and right sides of the machine room 15, and covered by the counter on the rear side. It is covered by a weight 19.
  • the upper swing body 12 further includes a first bonnet 30, a second bonnet 40 and a bonnet spacer 50, which cover the machine room 15 on the upper side of the machine room 15.
  • the first and second bonnets 30, 40 are spaced apart from each other in the width direction of the upper rotating body 12, and the bonnet spacer 50 is provided to support the first hood. It is arranged so as to block the space interposed between the bonnet 30 and the second bonnet 40 .
  • the machine room frame 60 includes a plurality of column members, a plurality of frame members, a top plate 63, and a plurality of upper column members.
  • the plurality of pillar members include a right front pillar member 61a, a right rear pillar member 61b, an intermediate pillar member 61c, a left front pillar member 61d, and a left rear pillar member 61e.
  • the plurality of frame members includes a right frame member 62a, a left frame member 62b, a front frame member 62c, and a rear frame member 62d
  • the plurality of upper column members are upper column members 64a, 64b, 64c. , 64d.
  • the column members 61a to 61e are horizontally spaced from each other and stand on the revolving frame 16. As shown in FIG.
  • the right front pillar member 61a, the right rear pillar member 61b, the left front pillar member 61d, and the left rear pillar member 61e are the right front corner, the right rear corner, the left front corner, and the left rear corner of the machine room frame 60. respectively.
  • the intermediate pillar member 61c is positioned between the right front pillar member 61a and the left front pillar member 61d.
  • the column members 61 a , 61 b , 61 c are located in the right region of the machine room frame 60 and have heights smaller than the respective height dimensions of the column members 61 d , 61 e located at the left end of the machine room frame 60 . have dimensions.
  • Each of the plurality of frame members 62a to 62d extends in the longitudinal direction or the lateral direction of the upper revolving body 12 at a predetermined height position above the revolving frame 16, as will be described in detail later. It defines the upper opening of the machine room 15 .
  • the top plate 63 is connected to the upper ends of the column members 61a, 61b, and 61c erected in the right region.
  • the top plate 63 has an upper surface, and the exhaust gas aftertreatment device 80 shown in FIG. 6 is installed on the upper surface.
  • the upper column members 64a to 64d are erected on the four corners of the top plate 63, respectively.
  • Each of the upper pillar members 64a to 64d has a length such that the upper end of each of the upper pillar members 64a to 64d is positioned at substantially the same height as the upper ends of each of the pillar members 61d and 61e.
  • the hydraulic pump is positioned on the right side of the engine 90 below the top plate 63 and is connected to the engine 90 .
  • the engine 90 is arranged horizontally extending in the width direction on the left side of the exhaust aftertreatment device 80. As shown in FIG. The cooling fan 91 and the heat exchanger 92 are arranged further to the left of the engine 90 .
  • the engine 90 has an oil filler port 60a, and engine oil is supplied to the engine 90 through the oil filler port 60a.
  • the fuel filler port 90 a is located at the upper right end of the engine 90 . At least the upper end of the fuel filler port 90a of the engine 90 protrudes above the upper ends of the column members 61d and 61e and the upper column members 64a to 64d.
  • the right frame member 62a extends in the front-rear direction so as to connect the upper ends of the upper column members 64a and 64b arranged in the front-rear direction at the right end of the machine room frame 60.
  • the left frame member 62b extends in the front-rear direction so as to connect upper ends of the left front column member 61d and the left rear column member 61e arranged in the front-rear direction at the left end of the machine room frame 60. As shown in FIG.
  • the front frame member 62c is arranged in the left-right direction so as to connect the upper ends of the upper pillar members 64a and 64c and the left front pillar member 61d arranged in the left-right direction at the front end of the machine room frame 60, that is, the left front pillar member 61d. It extends in the width direction of the upper revolving body 12 .
  • the rear frame member 62d is arranged at the rear end of the machine room frame 60 so as to connect the upper ends of the upper column members 64c and 64d and the left rear column member 61e arranged in the left-right direction. direction, that is, the width direction of the upper swing body 12 .
  • Each of the front side frame member 62c and the rear side frame member 62d may be composed of a plurality of members connected to each other.
  • the machine room frame 60 further includes a beam member 70.
  • the beam member 70 is formed on the upper side of the engine 90 by the middle portion of the front frame member 62c in the left-right direction and the rear frame member 62d in the left-right direction. It extends in the front-rear direction so as to interconnect the intermediate portion of the.
  • the first bonnet 30 is positioned above the first portion, which is the right portion of the machine room 15, and is supported by the right frame member 62a, the front frame member 62c, and the rear frame member 62d while being supported by the right frame member 62a, the front frame member 62c, and the rear frame member 62d.
  • the top side of one portion covers the first portion.
  • the first part houses the exhaust gas aftertreatment device 80, so that the first bonnet 30 covers the exhaust gas aftertreatment device 80 on its upper side.
  • the second bonnet 40 is positioned above the second portion, which is the left portion of the machine room 15, and is supported by the left frame member 62b, the front frame member 62c, and the rear frame member 62d.
  • the upper side of the two parts covers the second part.
  • the second part houses the engine 90, the cooling fan 91 and the heat exchanger 92, so that the second bonnet 40 holds the engine 90, the cooling fan 91 and the heat exchanger 92 on its upper side. cover.
  • the beam member 70 connects the longitudinal middle portions of the front frame member 62c and the rear frame member 62d to each other, so that the front frame member 62c and the rear frame member 62d are twisted. torsional deformation of the front frame member 62c and the rear frame member 62d. Control the load.
  • the beam member 70 is located between the first bonnet 30 and the second bonnet 40 and is arranged so as to have a portion overlapping the bonnet spacer 50 when viewed from above, that is, when viewed from above.
  • the width dimension of the beam member 70 according to the present embodiment is larger than the width dimension of the bonnet spacer 50 .
  • the beam member 70 is arranged such that the right end portion of the beam member 70 overlaps the first bonnet 30 and the left end portion of the beam member 70 overlaps the second bonnet 40 in plan view. .
  • the beam member 70 has an internal opening 73 which will be described in detail later, and the bonnet spacer 50 overlaps the beam member 70 except for the internal opening 73 in plan view, that is, overlaps vertically.
  • the beam member 70 has a front end portion and a rear end portion, which are both ends in the front-rear direction.
  • the front end portion is positioned above the intermediate portion of the front frame member 62c so as to connect the intermediate portions in the longitudinal direction (the lateral direction) of the front frame member 62c and the rear frame member 62d. and the rear end portion is joined to the upper portion of the intermediate portion of the rear frame member 62d.
  • the beam member 70 is preferably made of a plate material having a uniform cross-sectional shape along the front-rear direction of the upper revolving body 12 . Cross section. By changing the dimension of the beam member 70 in the width direction, the beam member 70 can be applied to a plurality of construction machines having different specifications in which the machine room 15 has a different width dimension.
  • the beam member 70 integrally has a horizontal plate portion 71 and a vertical plate portion 72 in this embodiment.
  • the horizontal plate portion 71 is arranged to extend in the front-rear direction of the upper revolving body 12 in a substantially horizontal posture in which the thickness direction of the horizontal plate portion 71 is the vertical direction.
  • the vertical plate portion 72 protrudes upward from the horizontal plate portion 71 .
  • the vertical plate portion 72 extends in the front-rear direction of the upper swing body 12 and protrudes upward from the left end portion of the horizontal plate portion 71 in the left-right direction. Therefore, the cross section of the beam member 70 has an L shape formed by the horizontal plate portion 71 and the vertical plate portion 72 .
  • the specific shape of the cross section of the beam member 70 is not limited.
  • the cross section may be, for example, a T-shape in which the vertical plate portion 72 protrudes upward from the substantially central portion of the horizontal plate portion 71 in the left-right direction.
  • At least one of the first bonnet 30 and the second bonnet 40 is an opening/closing bonnet configured to be able to perform an opening/closing operation for opening/closing the machine room 15, and the opening/closing operation is performed at an open position. It is the action of moving to and from the closed position.
  • the open position is a position in which the opening/closing bonnet opens the upper opening of the machine room 15 upward
  • the closed position is a position in which the opening/closing bonnet closes the upper opening of the machine room 15 .
  • the second bonnet 40 is the opening/closing bonnet, and the rear end portion of the second bonnet 40 in the front-rear direction is rotatably attached to the rear frame member 62d via a hinge. Concatenated.
  • the opening/closing bonnet can perform the opening/closing operation while being supported by the stay 41 .
  • the stay 41 is a member extending in one direction and has a bonnet-side end and a guided end that is the opposite end.
  • the hood-side end portion is connected to the front end portion of the opening/closing bonnet (the second bonnet 40 in the example shown in FIG. 7) or a portion in the vicinity thereof so as to be rotatable about the left-right direction axis.
  • the guided end is connected to the beam member 70 so that it can be guided along the beam member 70 (that is, in the front-rear direction).
  • the vertical plate portion 72 of the beam member 70 is formed with, for example, a guide rail 72a including an elongated hole extending in the front-rear direction, and the guided end portion of the stay 41 slides along the guide rail 72a. It is engaged with the guide rail 72a so as to be possible.
  • the guide rail 72a moves the second bonnet 40 through the stay 41 to facilitate the opening and closing operation of the second bonnet 40.
  • the opening/closing operation can be stabilized by guiding in the direction.
  • the beam member 70 can have high rigidity by including the vertical plate portion 72 in addition to the horizontal plate portion 71 . This enables the inner openings 73 and 74 to be formed in the horizontal plate portion 71 and the vertical plate portion 72, respectively.
  • the inner openings 73 and 74 are connected to each other, effectively preventing the beam member 70 from interfering with the engine 90 .
  • the engine 90 projects toward the beam member 70, and at least a fuel filler port 90a of the engine 90 extends from the left front pillar member 61d and the left rear pillar member 61e. , and protrudes upward from the upper end of each of the upper pillar members 64a to 64d.
  • the internal opening 73 is formed by notching a portion including the left end portion of the horizontal plate portion 71 , and the internal opening 74 is formed by cutting a portion of the lower end portion of the vertical plate portion 72 corresponding to the internal opening 73 . It is formed by notching the part containing.
  • the inner opening 73 is formed at a position vertically facing the spacer opening 51 formed in the bonnet spacer 50 , so that an operator can move downward from the beam member 70 through the inner opening 73 and the spacer opening 51 .
  • the horizontal plate portion 71 includes a weir 71 a that rises at the periphery of the internal opening 73 , and the weir 71 a prevents rainwater and the like from entering the machine room 15 through the internal opening 73 .
  • the bonnet spacer 50 is an additional member, and enables the existing first bonnet 30 and the second bonnet 40 to be applied as they are to a new construction machine in which the machine room 15 is expanded in the width direction. , the machine room 15 is added to cover the expanded part. Specifically, the bonnet spacer 50 is interposed between the first bonnet 30 and the second bonnet 40 to provide an intermediate portion of the machine room 15, that is, between the first portion and the second portion. on the upper side of the intermediate portion.
  • the bonnet spacer 50 has a spacer body, and as shown in FIG. 8, the spacer body includes a body portion 50c, a front side portion 50a, and a rear side portion 50b.
  • the body portion 50c extends in the front-rear direction of the upper revolving body 12 and has a front end portion and a rear end portion, which are both ends.
  • the front side portion 50a extends downward (diagonally outward and downward in this embodiment) from the front end of the body portion 50c, and the rear side portion 50b extends downward (in this embodiment) from the rear end of the body portion 50c. , extending diagonally outward and downward).
  • the bonnet spacer 50 has a width dimension smaller than the width dimension (dimension in the width direction) of each of the first bonnet 30 and the second bonnet 40 .
  • the bonnet spacer 50 further includes a pair of edge portions 50d, and each of the pair of edge portions 50d protrudes downward from left and right ends of each of the main body portion 50c, the front side portion 50a, and the rear side portion 50b. do.
  • the bonnet spacer 50 includes the spacer main body in which the spacer opening 51 is formed, and an opening/closing member 52 capable of opening and closing the spacer opening 51 .
  • the spacer opening 51 is formed in a region from the upper portion of the front side portion 50a to the approximate central portion of the main body portion 50c in the front-rear direction. and penetrates the main body portion 50c in the vertical direction.
  • the spacer opening 51 is positioned to face the internal opening 73 of the beam member 70 and has a shape larger than the internal opening 73 .
  • the opening/closing member 52 has a shape slightly larger than the spacer opening 51 so as to be able to block the spacer opening 51 .
  • the opening/closing member 52 is connected to the spacer main body through a hinge 52a at the rear end position of the spacer opening 51 so as to be rotatable about the axis in the left-right direction. positions, i.e. opening and closing said spacer openings 51.
  • the opening/closing member 52 opens the spacer opening 51 at the open position and closes the spacer opening 51 at the closed position.
  • the opening/closing member 52 may be any member as long as it can open and close the spacer opening 51 . That is, the open position may be a position where the opening/closing member 52 is separated from the bonnet spacer 50 .
  • the central scaffolding 21 is provided at a position where a worker can stand on the central scaffolding 21 and open and close the second bonnet 40 and the opening/closing member 52 .
  • an operator stands on the central scaffold 21 and operates the second bonnet 40 and the opening/closing member 52 to open the upper opening of the machine room 15 and the spacer opening 51 of the bonnet spacer 50, as shown in FIG. 2, the power equipment housed in the machine room 15 is exposed to the upper outside through the spacer opening 51 and the inner opening 73 of the beam member 70, so that maintenance of the power equipment can be easily performed.
  • the fuel filler port 90a is positioned below the beam member 70, and an operator can access the fuel filler port 90a through the spacer opening 51 and the internal opening 73 opened as described above. As a result, engine oil can be easily replenished to the engine 90 through the oil filler port 90a.
  • At least one of the first bonnet 30 and the second bonnet 40 is the opening/closing bonnet, and a part of the opening/closing bonnet is above the bonnet spacer 50 and the opening/closing member 52 in the closed position. overlaps with The second bonnet 40, which is the opening/closing bonnet in the example shown in FIG. 7, includes a weatherstrip 42 shown in FIG. to prevent rainwater from entering. When the second bonnet 40 is in the closed position, the weather strip 42 overlaps the spacer main body of the bonnet spacer 50 and the opening/closing member 52 on the upper side thereof, thereby achieving high sealing performance by the opening/closing member 52.
  • the first bonnet 30 has an edge portion 31 as shown in FIG. It is joined to the bonnet spacer 50 at a position where it does not. Therefore, the second bonnet 40 permits the opening/closing operation of the opening/closing member 52 at the open position, and restrains the opening/closing operation of the opening/closing member 52 at the closed position. This eliminates the need for a special locking mechanism for locking the opening/closing member 52 in the closed position.
  • the first bonnet 30 and the second bonnet 40 can be By interposing the bonnet spacer 50 between the bonnet 40 and covering the intermediate portion of the machine room 15 on the upper side, the machine room 15 can be seen through the space between the first bonnet 30 and the second bonnet 40 . is prevented from being exposed to the outside above it.
  • the machine room 15 is expanded in the width direction, the expanded portion can be covered by the bonnet spacer 50 .
  • the bonnet spacer 50 is arranged so as to vertically overlap the beam member 70 for increasing the rigidity of the front and rear frame members 62c, 62d, thereby providing It is possible to suppress the deformation of the bonnet spacer 50 by effectively using the beam member 70 for reinforcing the spacer 62d.
  • the torsional deformation of the front and rear frame members 62c, 62d is connected to the front and rear frame members 62c, 62d (via the beam members 70 in this embodiment).
  • the beam member 70 suppresses the torsional deformation of the front and rear frame members 62c and 62d at positions overlapping the bonnet spacer 50 in the vertical direction.
  • the load acting on the bonnet spacer 50 due to the torsional deformation can also be effectively suppressed. This makes it possible to reduce the strength required of the bonnet spacer 50 and increase the degree of freedom of its shape (especially the degree of freedom of the width dimension).
  • a construction machine that includes a machine room and a bonnet that covers the machine room, and that can efficiently accommodate expansion of the machine room in the width direction.
  • the construction machine includes a lower traveling body and an upper revolving body rotatably mounted on the lower traveling body.
  • the upper rotating body includes a front frame member, a rear frame member, a first bonnet, a second bonnet, a bonnet spacer, and a beam member.
  • the front frame member extends in the width direction of the upper rotating body.
  • the rear frame member is arranged behind the front frame member in the front-rear direction of the upper revolving body, and between the front frame member and the rear frame member is an upper opening of a machine room for accommodating an engine.
  • the first bonnet covers the first portion of the machine room above the first portion.
  • the second bonnet is arranged with a space between the first bonnet and the second bonnet in the width direction of the upper rotating body, and is positioned above the second portion of the machine room. cover.
  • the bonnet spacer is arranged to block the space interposed between the first bonnet and the second bonnet, is connected to the front frame member and the rear frame member, and is located above an intermediate portion of the machine room. cover the middle part with The intermediate portion is the portion between the first portion and the second portion.
  • the beam member connects the front frame member and the rear frame member in the longitudinal direction above the engine.
  • the beam member is arranged so as to include a portion that overlaps the bonnet spacer in plan view.
  • the bonnet spacer is interposed between the first bonnet and the second bonnet spaced apart from each other in the width direction of the upper revolving body, and covers the intermediate portion of the machine room on its upper side. Therefore, it is possible to prevent the machine room from being exposed to the outside through the space between the first bonnet and the second bonnet.
  • the first and second bonnets are the first bonnets of existing construction machines and are used as common parts, even if the machine room is expanded in the width direction, Allowing that extension to be covered complementary by the bonnet spacer.
  • the overlapping arrangement of the bonnet spacer and the beam member interconnects the front frame member and the rear frame member to suppress torsional deformation of the front frame member and the rear frame member.
  • the bonnet spacer preferably includes a spacer main body having a spacer opening that communicates the inside and the outside of the machine room with each other, and an opening/closing member capable of opening and closing the spacer opening.
  • the spacer opening and the opening/closing member allow maintenance of equipment housed in the machine room to be easily performed through the spacer opening. Also, the spacer opening and the opening/closing member eliminate the need for the bonnet spacer itself to open and close, thereby allowing for cost savings.
  • At least one of the first bonnet and the second bonnet is an opening/closing bonnet that can move between an open position that opens the upper opening of the machine room and a closed position that closes the upper opening; It is preferable that the bonnet spacer and the opening/closing member are arranged so as to overlap with each other in the closed position.
  • the openable bonnet overlaps the upper side of the openable member in the closed position to constrain the openable member, thereby eliminating the need for a special locking mechanism for locking the openable member in the closed state, or eliminating the lock mechanism. Allows for simplification, which allows for cost savings.
  • the beam member has a horizontal portion extending in the longitudinal direction of the upper rotating body and a vertical portion projecting upward from the horizontal portion, and an internal opening passing through the beam member is formed at a position facing the spacer opening. It is preferred that The inner opening allows an operator to access below the beam member through the inner opening and the spacer opening while the open/close member opens the spacer opening. This makes it easier to perform maintenance on equipment. Moreover, the vertical portion effectively reinforces the beam member, thereby suppressing a decrease in strength due to the formation of the internal opening.
  • the vertical portion includes a guide portion that extends in the front-rear direction of the upper rotating body and guides the opening/closing bonnet in the direction of the opening/closing operation.
  • a guide portion that extends in the front-rear direction of the upper rotating body and guides the opening/closing bonnet in the direction of the opening/closing operation.
  • the bonnet spacer includes a body portion extending in the front-rear direction, and a front side portion and a rear side portion extending downward from a front end and a rear end of the body portion, respectively. may be fixed to That is, the bonnet spacer may be connected to the front frame member and the rear frame member via the beam member.
  • the horizontal portion of the beam member is formed of a plate having a uniform cross-sectional shape along the width direction of the upper rotating body over the front-rear direction, and the thickness direction of the plate is the vertical direction. Those that are arranged in a posture are preferred.
  • the shape of the beam member is arranged such that the beam member and at least a portion of the bonnet spacer overlap in a plan view by securing a large width dimension of the beam member while suppressing the height dimension of the beam member. make it easier to

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  • Combustion & Propulsion (AREA)
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  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
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Abstract

Provided is a construction machine comprising: a front-side frame member (62c) and a rear-side frame member (62d); a first bonnet (30) and a second bonnet (40); a bonnet spacer (50); and a beam member (70). The front-side and rear-side frame members (62c, 62d) extend in the width direction of an upper rotating body to demarcate an upper opening in a machine chamber (15). The first and second bonnets (30, 40) are disposed at an interval from each other in the width direction of the upper rotating body to cover the machine chamber (15). The bonnet spacer (50) closes the space between the first bonnet (30) and the second bonnet (40) to cover the machine chamber (15). The beam member (70) connects the front-side and rear-side frame members (62c, 62d) in the front-rear direction and includes a portion overlapping the bonnet spacer (50) in plan view.

Description

建設機械construction machinery
　本発明は、建設機械に関する。 The present invention relates to construction machinery.
　従来、下部走行体と上部旋回体とを備えた、油圧ショベルなどの建設機械が知られている。前記上部旋回体は旋回フレームを有し、当該旋回フレームが前記下部走行体に旋回可能に搭載されている。前記上部旋回体は、前記旋回フレームの上に配置された機械室を含み、当該機械室は、油圧ポンプやエンジン等の動力設備を収容する。 Conventionally, construction machines such as hydraulic excavators are known that are equipped with a lower traveling body and an upper revolving body. The upper revolving body has a revolving frame, and the revolving frame is mounted on the lower traveling body so as to be able to revolve. The upper revolving structure includes a machine room arranged on the revolving frame, and the machine room accommodates power equipment such as a hydraulic pump and an engine.
　特許文献１は、機械室の上面を覆うボンネットを備えた建設機械を開示する。前記ボンネットは、上部旋回体の幅方向に並ぶ複数のカバー、すなわち、エンジン上部カバー及び熱交換器上部カバー、に分割されている。 Patent Document 1 discloses a construction machine with a bonnet that covers the upper surface of the machine room. The bonnet is divided into a plurality of covers arranged in the width direction of the upper revolving structure, that is, an engine upper cover and a heat exchanger upper cover.
　近年では、前記動力設備の大型化に伴い、これを収容する前記機械室が前記上部旋回体の幅方向に拡張されることがある。この拡張は、前記機械室の上面を覆うボンネットの大型化及び重量の増大を伴う。 In recent years, with the increase in size of the power equipment, the machine room that accommodates it may be expanded in the width direction of the upper rotating body. This expansion is accompanied by an increase in size and weight of the bonnet that covers the upper surface of the machine room.
特開２０１６－６９９６４号公報JP 2016-69964 A
　本発明は、機械室及びこれを覆うボンネットを備え、かつ、前記機械室の幅方向への拡張に効率よく対応可能な建設機械を提供することを目的とする。 An object of the present invention is to provide a construction machine that includes a machine room and a bonnet that covers the machine room, and that can efficiently accommodate expansion of the machine room in the width direction.
　提供されるのは、下部走行体と、前記下部走行体に旋回可能に搭載される上部旋回体と、を備えた建設機械である。前記上部旋回体は、前側フレーム部材と、後側フレーム部材と、第１ボンネットと、第２ボンネットと、ボンネットスペーサと、梁部材と、を含む。前記前側フレーム部材は、前記上部旋回体の幅方向に延びる。前記後側フレーム部材は、前記上部旋回体の前後方向において前記前側フレーム部材の後方に配置され、前記前側フレーム部材と前記後側フレーム部材との間に、エンジンを収容する機械室の上部開口を画定するように前記上部旋回体の前記幅方向に延びる。前記第１ボンネットは、前記機械室の第１部分の上側で当該第１部分を覆う。前記第２ボンネットは、前記上部旋回体の前記幅方向において前記第１ボンネットと前記第２ボンネットとの間に間隔をおいて配置され、前記機械室の第２部分の上側で当該第２部分を覆う。前記ボンネットスペーサは、前記第１ボンネットと前記第２ボンネットとの間に介在する空間を塞ぐように配置されて前記前側フレーム部材及び前記後側フレーム部材に連結され、前記機械室の中間部分の上側で当該中間部分を覆う。前記中間部分は前記第１部分と前記第２部分との間の部分である。前記梁部材は、前記エンジンの上側において前記前側フレーム部材と前記後側フレーム部材とを前記前後方向に連結する。前記梁部材は、平面視で前記ボンネットスペーサと重なる部分を含むように配置される。 What is provided is a construction machine comprising a lower traveling body and an upper revolving body rotatably mounted on the lower traveling body. The upper rotating body includes a front frame member, a rear frame member, a first bonnet, a second bonnet, a bonnet spacer, and a beam member. The front frame member extends in the width direction of the upper rotating body. The rear frame member is arranged behind the front frame member in the front-rear direction of the upper revolving body, and between the front frame member and the rear frame member, an upper opening of a machine room for accommodating an engine is formed. extends in the width direction of the upper rotating body in a defined manner. The first bonnet covers the first portion of the machine room above the first portion. The second bonnet is arranged with a space between the first bonnet and the second bonnet in the width direction of the upper rotating body, and is positioned above the second portion of the machine room. cover. The bonnet spacer is arranged to block the space interposed between the first bonnet and the second bonnet, is connected to the front frame member and the rear frame member, and is located above an intermediate portion of the machine room. to cover the intermediate portion. The intermediate portion is the portion between the first portion and the second portion. The beam member connects the front frame member and the rear frame member in the longitudinal direction above the engine. The beam member is arranged so as to include a portion that overlaps the bonnet spacer in plan view.
実施形態に係る建設機械の側面図である。1 is a side view of a construction machine according to an embodiment; FIG. 前記建設機械の上部旋回体の斜視図である。FIG. 4 is a perspective view of an upper rotating body of the construction machine; 前記上部旋回体の要部を拡大した斜視図である。FIG. 4 is an enlarged perspective view of a main portion of the upper rotating body; 前記上部旋回体における第１ボンネット、ボンネットスペーサ及び第２ボンネットの平面図である。FIG. 4 is a plan view of a first bonnet, a bonnet spacer and a second bonnet in the upper rotating body; 前記上部旋回体の機械室フレーム及び当該機械室フレームに固定された梁部材を示す斜視図である。FIG. 4 is a perspective view showing a machine room frame of the upper swing structure and a beam member fixed to the machine room frame; 前記上部旋回体から前記第１ボンネット、前記ボンネットスペーサ及び前記第２ボンネットを取り外した状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which the first bonnet, the bonnet spacer, and the second bonnet are removed from the upper revolving body; 前記上部旋回体の前記第２ボンネットが開位置にある状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which the second bonnet of the upper rotating body is at an open position; 前記機械室フレーム及びこれに固定されたボンネットスペーサを示す斜視図である。FIG. 4 is a perspective view showing the machine room frame and a bonnet spacer fixed thereto; 前記第２ボンネット及び中間開閉部材がそれぞれ開位置にある状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which the second bonnet and the intermediate opening/closing member are in open positions; 前記第２ボンネット及び前記中間開閉部材がそれぞれ開位置にある状態を示す平面図である。FIG. 4 is a plan view showing a state in which the second bonnet and the intermediate opening/closing member are in open positions; 図４のＸＩ－ＸＩ線に沿った断面を示す図である。5 is a diagram showing a cross section along line XI-XI of FIG. 4; FIG.
　以下、本発明の実施形態に係る建設機械について、図面を参照しながら説明する。 A construction machine according to an embodiment of the present invention will be described below with reference to the drawings.
　図１は、前記実施形態に係る建設機械１０を示し、当該建設機械１０は、この実施の形態では油圧ショベルである。前記建設機械１０は、クローラ式の下部走行体１１と、下部走行体１１上に旋回自在に搭載された上部旋回体１２と、アタッチメント１３と、を備えている。前記上部旋回体１２は、キャブ１４、機械室１５、旋回フレーム１６、作動油タンク１７、燃料タンク１８、カウンタウェイト１９、エアクリーナ２０、中央足場２１、昇降ステップ２２を含む。 FIG. 1 shows a construction machine 10 according to the embodiment, and the construction machine 10 is a hydraulic excavator in this embodiment. The construction machine 10 includes a crawler-type lower running body 11 , an upper revolving body 12 rotatably mounted on the lower running body 11 , and an attachment 13 . The upper revolving body 12 includes a cab 14 , a machine room 15 , a revolving frame 16 , a hydraulic oil tank 17 , a fuel tank 18 , a counterweight 19 , an air cleaner 20 , a central scaffolding 21 and a lifting step 22 .
　前記旋回フレーム１６は、製缶の構造物であり、前記下部走行体１１の上方に旋回可能に配置される。前記旋回フレーム１６の上に、前記アタッチメント１３、前記キャブ１４、前記機械室１５、前記作動油タンク１７及び前記燃料タンク１８が配置される。 The revolving frame 16 is a can manufacturing structure, and is disposed above the lower traveling body 11 so as to be able to revolve. The attachment 13 , the cab 14 , the machine room 15 , the hydraulic oil tank 17 and the fuel tank 18 are arranged on the revolving frame 16 .
　前記アタッチメント１３は、前記旋回フレーム１６の前部に連結され、ブーム１３ａ、アーム１３ｂ、バケット１３ｃ及び複数の油圧シリンダ１８ｄを含む。前記複数の油圧シリンダ１３ｄのそれぞれは油圧によって伸縮動作させられることが可能であり、当該伸縮動作に伴って前記ブーム１３ａ、前記アーム１３ｂ及び前記バケット１３ｃが回動する。前記伸縮動作が油圧制御されることにより、掘削等の作業が行われることが可能である。 The attachment 13 is connected to the front part of the revolving frame 16 and includes a boom 13a, an arm 13b, a bucket 13c and a plurality of hydraulic cylinders 18d. Each of the plurality of hydraulic cylinders 13d can be telescopically operated by hydraulic pressure, and the boom 13a, the arm 13b, and the bucket 13c rotate along with the telescopic motion. Work such as excavation can be performed by hydraulically controlling the telescopic motion.
　前記キャブ１４は、運転室であり、当該キャブ１４内において前記アタッチメント１３の操作が行われることを許容する。前記キャブ１４は、例えば矩形箱形をなし、前記アタッチメント１３と前記上部旋回体１２の左右方向すなわち幅方向に隣接するように前記旋回フレーム１６の前部の上に設置されている。前記燃料タンク１８は前記キャブ１４の後方に配置されている。前記エアクリーナ２０は、前記燃料タンク１８の上部に配置されてエンジン９０の吸気を濾過する。 The cab 14 is a driver's cab and allows the operation of the attachment 13 inside the cab 14 . The cab 14 has, for example, a rectangular box shape, and is installed on the front portion of the revolving frame 16 so as to be adjacent to the attachment 13 and the upper revolving body 12 in the left-right direction, that is, the width direction. The fuel tank 18 is arranged behind the cab 14 . The air cleaner 20 is arranged above the fuel tank 18 to filter the intake air of the engine 90 .
　前記作動油タンク１７は、前記燃料タンク１８及び前記エアクリーナ２０の側方に配置され、前記燃料タンク１８及び前記エアクリーナ２０に対して前記中央足場２１を挟んで前記上部旋回体１２の前記幅方向に対向する。前記昇降ステップ２２は、前記作動油タンク１７の前方に位置して作業者を中央足場２１へ導く。 The hydraulic oil tank 17 is arranged on the side of the fuel tank 18 and the air cleaner 20, and extends in the width direction of the upper revolving body 12 with respect to the fuel tank 18 and the air cleaner 20 with the central scaffold 21 interposed therebetween. opposite. The elevating step 22 is located in front of the hydraulic oil tank 17 and guides the worker to the central scaffolding 21 .
　前記機械室１５は、前記旋回フレーム１６の後部の上に画定され、前記上部旋回体１２の前記幅方向に延びている。前記上部旋回体１２は機械室フレーム６０を含み、前記機械室フレーム６０はは、前記旋回フレーム１６の上に設置されて前記機械室１５を画定する。前記機械室１５は動力設備を収容し、前記動力設備は、排気ガス後処理装置８０、前記エンジン９０及び図示されない油圧ポンプを含む。前記機械室１５は、当該機械室１５の前側において前記作動油タンク１７及び前記燃料タンク１８により覆われ、当該機械室１５の左側及び右側において一対のサイドカバー２３により覆われ、後側において前記カウンタウェイト１９により覆われている。 The machine room 15 is defined on the rear portion of the revolving frame 16 and extends in the width direction of the upper revolving body 12 . The upper swing structure 12 includes a machine room frame 60 , which is mounted on the swing frame 16 to define the machine room 15 . The machine room 15 houses power equipment, which includes an exhaust gas aftertreatment device 80, the engine 90 and a hydraulic pump (not shown). The machine room 15 is covered by the hydraulic oil tank 17 and the fuel tank 18 on the front side of the machine room 15, covered by a pair of side covers 23 on the left and right sides of the machine room 15, and covered by the counter on the rear side. It is covered by a weight 19.
　前記上部旋回体１２は、第１ボンネット３０、第２ボンネット４０及びボンネットスペーサ５０をさらに含み、これらは前記機械室１５を当該機械室１５の上側において覆う。前記第１及び第２ボンネット３０，４０は、図３及び図４にも示すように、前記上部旋回体１２の前記幅方向に互いに間隔をあけて配置され、前記ボンネットスペーサ５０は、前記第１ボンネット３０と前記第２ボンネット４０との間に介在する空間を塞ぐように配置されている。 The upper swing body 12 further includes a first bonnet 30, a second bonnet 40 and a bonnet spacer 50, which cover the machine room 15 on the upper side of the machine room 15. As shown in FIGS. 3 and 4, the first and second bonnets 30, 40 are spaced apart from each other in the width direction of the upper rotating body 12, and the bonnet spacer 50 is provided to support the first hood. It is arranged so as to block the space interposed between the bonnet 30 and the second bonnet 40 .
　前記機械室フレーム６０は、複数の柱部材と、複数のフレーム部材と、天板６３と、複数の上側柱部材と、を含む。図５に示すように、前記複数の柱部材は、右前柱部材６１ａと、右後柱部材６１ｂと、中間柱部材６１ｃと、左前柱部材６１ｄと、左後柱部材６１ｅと、を含み、前記複数のフレーム部材は、右側フレーム部材６２ａと、左側フレーム部材６２ｂと、前側フレーム部材６２ｃと、後側フレーム部材６２ｄと、を含み、前記複数の上側柱部材は、上側柱部材６４ａ，６４ｂ，６４ｃ，６４ｄを含む。 The machine room frame 60 includes a plurality of column members, a plurality of frame members, a top plate 63, and a plurality of upper column members. As shown in FIG. 5, the plurality of pillar members include a right front pillar member 61a, a right rear pillar member 61b, an intermediate pillar member 61c, a left front pillar member 61d, and a left rear pillar member 61e. The plurality of frame members includes a right frame member 62a, a left frame member 62b, a front frame member 62c, and a rear frame member 62d, and the plurality of upper column members are upper column members 64a, 64b, 64c. , 64d.
　前記柱部材６１ａ～６１ｅは、水平方向に互いに間隔をおいて配置され、前記旋回フレーム１６の上に立設される。前記右前柱部材６１ａ、前記右後柱部材６１ｂ、前記左前柱部材６１ｄ及び前記左後柱部材６１ｅは、前記機械室フレーム６０の右前角部、右後角部、左前角部及び左後角部をそれぞれ構成する。前記中間柱部材６１ｃは、前記右前柱部材６１ａと前記左前柱部材６１ｄとの間に位置する。前記柱部材６１ａ，６１ｂ，６１ｃは、前記機械室フレーム６０の右側領域に位置し、前記機械室フレーム６０の左側端に位置する前記柱部材６１ｄ，６１ｅのそれぞれの高さ寸法よりも小さい高さ寸法を有する。 The column members 61a to 61e are horizontally spaced from each other and stand on the revolving frame 16. As shown in FIG. The right front pillar member 61a, the right rear pillar member 61b, the left front pillar member 61d, and the left rear pillar member 61e are the right front corner, the right rear corner, the left front corner, and the left rear corner of the machine room frame 60. respectively. The intermediate pillar member 61c is positioned between the right front pillar member 61a and the left front pillar member 61d. The column members 61 a , 61 b , 61 c are located in the right region of the machine room frame 60 and have heights smaller than the respective height dimensions of the column members 61 d , 61 e located at the left end of the machine room frame 60 . have dimensions.
　前記複数のフレーム部材６２ａ～６２ｄのそれぞれは、後に詳述するように、前記旋回フレーム１６よりも上側の所定の高さ位置で前記上部旋回体１２の前記前後方向または前記左右方向に延びて前記機械室１５の上側開口を画定する。 Each of the plurality of frame members 62a to 62d extends in the longitudinal direction or the lateral direction of the upper revolving body 12 at a predetermined height position above the revolving frame 16, as will be described in detail later. It defines the upper opening of the machine room 15 .
　前記天板６３は、前記右側領域において立設される前記柱部材６１ａ，６１ｂ，６１ｃのそれぞれの上端に連結されている。前記天板６３は上面を有して当該上面の上に図６に示される前記排気ガス後処理装置８０が設置される。前記上側柱部材６４ａ～６４ｄは前記天板６３の四隅の上にそれぞれ立設されている。前記上側柱部材６４ａ～６４ｄのそれぞれは、当該上側柱部材６４ａ～６４ｄのそれぞれの上端が前記柱部材６１ｄ，６１ｅのそれぞれの上端と略同等の高さに位置する長さを有する。前記油圧ポンプは、前記天板６３の下方で前記エンジン９０の右側に位置して当該エンジン９０に連結されている。 The top plate 63 is connected to the upper ends of the column members 61a, 61b, and 61c erected in the right region. The top plate 63 has an upper surface, and the exhaust gas aftertreatment device 80 shown in FIG. 6 is installed on the upper surface. The upper column members 64a to 64d are erected on the four corners of the top plate 63, respectively. Each of the upper pillar members 64a to 64d has a length such that the upper end of each of the upper pillar members 64a to 64d is positioned at substantially the same height as the upper ends of each of the pillar members 61d and 61e. The hydraulic pump is positioned on the right side of the engine 90 below the top plate 63 and is connected to the engine 90 .
　前記機械室１５において、前記エンジン９０は、前記排気ガス後処理装置８０の左側の位置において、前記幅方向に延びる横置きの状態で配置されている。前記冷却ファン９１及び前記熱交換器９２は前記エンジン９０のさらに左側に配置されている。 In the machine room 15, the engine 90 is arranged horizontally extending in the width direction on the left side of the exhaust aftertreatment device 80. As shown in FIG. The cooling fan 91 and the heat exchanger 92 are arranged further to the left of the engine 90 .
　前記エンジン９０は給油口６０ａを有し、当該給油口６０ａを通じて前記エンジン９０にエンジンオイルが給油される。前記給油口９０ａは前記エンジン９０の右端上部に位置する。前記エンジン９０のうち少なくとも前記給油口９０ａの上端部は、前記柱部材６１ｄ，６１ｅの上端及び前記上側柱部材６４ａ～６４ｄの上端よりも上方に突出している。 The engine 90 has an oil filler port 60a, and engine oil is supplied to the engine 90 through the oil filler port 60a. The fuel filler port 90 a is located at the upper right end of the engine 90 . At least the upper end of the fuel filler port 90a of the engine 90 protrudes above the upper ends of the column members 61d and 61e and the upper column members 64a to 64d.
　前記右側フレーム部材６２ａは、前記機械室フレーム６０の右端部において前記前後方向に並ぶ前記上側柱部材６４ａ，６４ｂの上端どうしを連結するように前記前後方向に延びる。前記左側フレーム部材６２ｂは、前記機械室フレーム６０の左端部において前記前後方向に並ぶ前記左前柱部材６１ｄ及び前記左後柱部材６１ｅの上端どうしを連結するように前記前後方向に延びる。前記前側フレーム部材６２ｃは、前記機械室フレーム６０の前端部において前記左右方向に並ぶ前記上側柱部材６４ａ，６４ｃ及び前記左前柱部材６１ｄのそれぞれの上端を相互に連結するように前記左右方向、すなわち前記上部旋回体１２の前記幅方向、に延びる。前記後側フレーム部材６２ｄは、前記機械室フレーム６０の後端部において前記左右方向に並ぶ前記上側柱部材６４ｃ，６４ｄ及び前記左後柱部材６１ｅのそれぞれの上端を相互に連結するように前記左右方向、すなわち前記上部旋回体１２の前記幅方向、に延びる。前記前側フレーム部材６２ｃ及び前記後側フレーム部材６２ｄのそれぞれは、互いに連結される複数の部材により構成されてもよい。 The right frame member 62a extends in the front-rear direction so as to connect the upper ends of the upper column members 64a and 64b arranged in the front-rear direction at the right end of the machine room frame 60. The left frame member 62b extends in the front-rear direction so as to connect upper ends of the left front column member 61d and the left rear column member 61e arranged in the front-rear direction at the left end of the machine room frame 60. As shown in FIG. The front frame member 62c is arranged in the left-right direction so as to connect the upper ends of the upper pillar members 64a and 64c and the left front pillar member 61d arranged in the left-right direction at the front end of the machine room frame 60, that is, the left front pillar member 61d. It extends in the width direction of the upper revolving body 12 . The rear frame member 62d is arranged at the rear end of the machine room frame 60 so as to connect the upper ends of the upper column members 64c and 64d and the left rear column member 61e arranged in the left-right direction. direction, that is, the width direction of the upper swing body 12 . Each of the front side frame member 62c and the rear side frame member 62d may be composed of a plurality of members connected to each other.
　前記機械室フレーム６０は、梁部材７０をさらに含み、前記梁部材７０は、前記エンジン９０の上側において前記前側フレーム部材６２ｃの前記左右方向についての中間部と前記後側フレーム部材６２ｄの前記左右方向についての中間部とを相互に連結するように前記前後方向に延びる。 The machine room frame 60 further includes a beam member 70. The beam member 70 is formed on the upper side of the engine 90 by the middle portion of the front frame member 62c in the left-right direction and the rear frame member 62d in the left-right direction. It extends in the front-rear direction so as to interconnect the intermediate portion of the.
　前記第１ボンネット３０は、前記機械室１５の右側部分である第１部分の上側に位置し、前記右側フレーム部材６２ａ、前記前側フレーム部材６２ｃ及び前記後側フレーム部材６２ｄに支持されながら、前記第１部分の上側で当該第１部分を覆う。前記第１部分は前記排気ガス後処理装置８０を格納しており、よって前記第１ボンネット３０は前記排気ガス後処理装置８０をその上側において覆う。 The first bonnet 30 is positioned above the first portion, which is the right portion of the machine room 15, and is supported by the right frame member 62a, the front frame member 62c, and the rear frame member 62d while being supported by the right frame member 62a, the front frame member 62c, and the rear frame member 62d. The top side of one portion covers the first portion. The first part houses the exhaust gas aftertreatment device 80, so that the first bonnet 30 covers the exhaust gas aftertreatment device 80 on its upper side.
　前記第２ボンネット４０は、前記機械室１５の左側部分である第２部分の上側に位置し、前記左側フレーム部材６２ｂ、前記前側フレーム部材６２ｃ及び前記後側フレーム部材６２ｄに支持されながら、前記第２部分の上側で当該第２部分を覆う。前記第２部分は前記エンジン９０、前記冷却ファン９１及び前記熱交換器９２を格納しており、よって前記第２ボンネット４０は前記エンジン９０、前記冷却ファン９１及び前記熱交換器９２をその上側において覆う。 The second bonnet 40 is positioned above the second portion, which is the left portion of the machine room 15, and is supported by the left frame member 62b, the front frame member 62c, and the rear frame member 62d. The upper side of the two parts covers the second part. The second part houses the engine 90, the cooling fan 91 and the heat exchanger 92, so that the second bonnet 40 holds the engine 90, the cooling fan 91 and the heat exchanger 92 on its upper side. cover.
　前記梁部材７０は、前記前側フレーム部材６２ｃ及び前記後側フレーム部材６２ｄのそれぞれの長手方向中間部どうしを相互に連結することにより、前記前側フレーム部材６２ｃ及び前記後側フレーム部材６２ｄのそれぞれの捻じり変形を抑制し、これにより、前記機械室フレーム６０の剛性を高めるとともに、前記前側フレーム部材６２ｃ及び前記後側フレーム部材６２ｄのそれぞれの前記捻じり変形に起因して前記ボンネットスペーサ５０に作用する荷重を抑制する。前記梁部材７０は、前記第１ボンネット３０と前記第２ボンネット４０との間に位置し、上から視て、すなわち平面視で、前記ボンネットスペーサ５０と重なる部分を有するように配置されている。本実施形態に係る前記梁部材７０の前記幅方向についての寸法、すなわち幅寸法、は、前記ボンネットスペーサ５０の幅寸法よりも大きい。前記平面視で、前記梁部材７０の右側端部が前記第１ボンネット３０と重なり、前記梁部材７０の左側端部が前記第２ボンネット４０と重なるように、前記梁部材７０が配置されている。前記梁部材７０は、後に詳述される内部開口７３を有し、前記ボンネットスペーサ５０は前記内部開口７３を除いて前記梁部材７０と平面視で重なっている、つまり上下方向に重なっている。 The beam member 70 connects the longitudinal middle portions of the front frame member 62c and the rear frame member 62d to each other, so that the front frame member 62c and the rear frame member 62d are twisted. torsional deformation of the front frame member 62c and the rear frame member 62d. Control the load. The beam member 70 is located between the first bonnet 30 and the second bonnet 40 and is arranged so as to have a portion overlapping the bonnet spacer 50 when viewed from above, that is, when viewed from above. The width dimension of the beam member 70 according to the present embodiment is larger than the width dimension of the bonnet spacer 50 . The beam member 70 is arranged such that the right end portion of the beam member 70 overlaps the first bonnet 30 and the left end portion of the beam member 70 overlaps the second bonnet 40 in plan view. . The beam member 70 has an internal opening 73 which will be described in detail later, and the bonnet spacer 50 overlaps the beam member 70 except for the internal opening 73 in plan view, that is, overlaps vertically.
　前記梁部材７０は、具体的には、前記前後方向の両端部である前端部及び後端部を有し、前記梁部材７０が前記上部旋回体１２の左右方向について前記天板６３の左側に位置し、前記前側フレーム部材６２ｃ及び後側フレーム部材６２ｄのそれぞれの前記長手方向（前記左右方向）の中間部どうしを連結するように、前記前端部が前記前側フレーム部材６２ｃの前記中間部の上部に接合され、前記後端部が前記後側フレーム部材６２ｄの前記中間部の上部に接合されている。前記梁部材７０は、横断面の形状が前記上部旋回体１２の前記前後方向にわたり一様である板材により構成されることが好ましく、前記横断面は前記上部旋回体１２の前記幅方向に沿った断面である。前記梁部材７０の前記幅方向の寸法を変更することにより、前記機械室１５の幅寸法が互いに異なる複数の仕様の建設機械にそれぞれ前記梁部材７０が適用されることが可能である。 Specifically, the beam member 70 has a front end portion and a rear end portion, which are both ends in the front-rear direction. The front end portion is positioned above the intermediate portion of the front frame member 62c so as to connect the intermediate portions in the longitudinal direction (the lateral direction) of the front frame member 62c and the rear frame member 62d. and the rear end portion is joined to the upper portion of the intermediate portion of the rear frame member 62d. The beam member 70 is preferably made of a plate material having a uniform cross-sectional shape along the front-rear direction of the upper revolving body 12 . Cross section. By changing the dimension of the beam member 70 in the width direction, the beam member 70 can be applied to a plurality of construction machines having different specifications in which the machine room 15 has a different width dimension.
　前記梁部材７０は、この実施の形態では水平板部７１と垂直板部７２とを一体に有する。前記水平板部７１は、略水平な姿勢であって前記水平板部７１の厚み方向が上下方向となる姿勢で前記上部旋回体１２の前記前後方向に延びるように配置される。前記垂直板部７２は、前記水平板部７１から上向きに突出する。本実施形態において、前記垂直板部７２は、前記上部旋回体１２の前記前後方向に延びながら前記左右方向について前記水平板部７１の左側端部から上向きに突出している。従って、前記梁部材７０の前記横断面は前記水平板部７１と前記垂直板部７２とで構成されたＬ字形状を有する。しかし、前記梁部材７０の前記横断面の具体的な形状は限定されない。当該横断面は、例えば、前記垂直板部７２が前記水平板部７１の前記左右方向についての略中央部から上向きに突出するＴ字形状であってもよい。 The beam member 70 integrally has a horizontal plate portion 71 and a vertical plate portion 72 in this embodiment. The horizontal plate portion 71 is arranged to extend in the front-rear direction of the upper revolving body 12 in a substantially horizontal posture in which the thickness direction of the horizontal plate portion 71 is the vertical direction. The vertical plate portion 72 protrudes upward from the horizontal plate portion 71 . In this embodiment, the vertical plate portion 72 extends in the front-rear direction of the upper swing body 12 and protrudes upward from the left end portion of the horizontal plate portion 71 in the left-right direction. Therefore, the cross section of the beam member 70 has an L shape formed by the horizontal plate portion 71 and the vertical plate portion 72 . However, the specific shape of the cross section of the beam member 70 is not limited. The cross section may be, for example, a T-shape in which the vertical plate portion 72 protrudes upward from the substantially central portion of the horizontal plate portion 71 in the left-right direction.
　前記第１ボンネット３０及び前記第２ボンネット４０の少なくとも一方は、前記機械室１５を開閉する開閉動作を行うことが可能となるように構成された開閉ボンネットであり、前記開閉動作は、開位置と閉位置との間で移動する動作である。前記開位置は、前記開閉ボンネットが前記機械室１５の前記上側開口を上方に開放する位置であり、前記閉位置は、前記開閉ボンネットが前記機械室１５の前記上側開口を閉じる位置である。図７に示される例では、前記第２ボンネット４０が前記開閉ボンネットであり、当該第２ボンネット４０の前記前後方向についての後端部がヒンジを介して回動可能に前記後側フレーム部材６２ｄに連結されている。 At least one of the first bonnet 30 and the second bonnet 40 is an opening/closing bonnet configured to be able to perform an opening/closing operation for opening/closing the machine room 15, and the opening/closing operation is performed at an open position. It is the action of moving to and from the closed position. The open position is a position in which the opening/closing bonnet opens the upper opening of the machine room 15 upward, and the closed position is a position in which the opening/closing bonnet closes the upper opening of the machine room 15 . In the example shown in FIG. 7, the second bonnet 40 is the opening/closing bonnet, and the rear end portion of the second bonnet 40 in the front-rear direction is rotatably attached to the rear frame member 62d via a hinge. Concatenated.
　この実施の形態では、前記開閉ボンネットはステー４１に支えられながら前記開閉動作を行うことが可能である。前記ステー４１は、一方向に延びる部材であって、ボンネット側端部とその反対側の端部である被案内端部とを有する。前記ボンネット側端部は、前記開閉ボンネット（図７に示される例では前記第２ボンネット４０）の前端部またはその近傍の部位に前記左右方向の軸回りに回動可能に連結される。前記被案内端部は、前記梁部材７０に沿って（すなわち前記前後方向に）案内されることが可能となるように当該梁部材７０に連結されている。詳しくは、前記梁部材７０の前記垂直板部７２に、例えば前後方向に延びる長孔を含むガイドレール７２ａが形成され、当該ガイドレール７２ａに沿って前記ステー４１の前記被案内端部が摺動可能となるように当該ガイドレール７２ａに係合されている。前記ガイドレール７２ａは、このようにして前記ステー４１の前記被案内端部を前記前後方向に案内することにより、当該ステー４１を介して前記第２ボンネット４０を当該第２ボンネット４０の開閉動作の方向に案内して当該開閉動作を安定させることができる。 In this embodiment, the opening/closing bonnet can perform the opening/closing operation while being supported by the stay 41 . The stay 41 is a member extending in one direction and has a bonnet-side end and a guided end that is the opposite end. The hood-side end portion is connected to the front end portion of the opening/closing bonnet (the second bonnet 40 in the example shown in FIG. 7) or a portion in the vicinity thereof so as to be rotatable about the left-right direction axis. The guided end is connected to the beam member 70 so that it can be guided along the beam member 70 (that is, in the front-rear direction). Specifically, the vertical plate portion 72 of the beam member 70 is formed with, for example, a guide rail 72a including an elongated hole extending in the front-rear direction, and the guided end portion of the stay 41 slides along the guide rail 72a. It is engaged with the guide rail 72a so as to be possible. By guiding the guided end of the stay 41 in the longitudinal direction, the guide rail 72a moves the second bonnet 40 through the stay 41 to facilitate the opening and closing operation of the second bonnet 40. The opening/closing operation can be stabilized by guiding in the direction.
　前記梁部材７０は、前記水平板部７１に加えて前記垂直板部７２を含むことにより、高い剛性を有することができる。このことは、前記水平板部７１及び前記垂直板部７２に前記内部開口７３及び内部開口７４がそれぞれ形成されることを可能にする。前記内部開口７３，７４は、互いに連なっており、前記梁部材７０が前記エンジン９０と干渉することを有効に防ぐ。具体的に、本実施形態では、図６に示すように、前記エンジン９０が前記梁部材７０に向かって張り出し、当該エンジン９０の少なくとも給油口９０ａが前記左前柱部材６１ｄ、前記左後柱部材６１ｅ及び前記上側柱部材６４ａ～６４ｄのそれぞれの上端よりも上方に突出している。前記内部開口７３は、前記水平板部７１において左側端部を含む部位を切り欠くことにより形成され、前記内部開口７４は前記垂直板部７２の下端部のうち前記内部開口７３に対応する部分を含む部位を切り欠くことにより形成されている。前記内部開口７３は、前記ボンネットスペーサ５０に形成されたスペーサ開口５１と上下方向に対向する位置に形成され、これにより、作業者が前記内部開口７３及び前記スペーサ開口５１を通じて前記梁部材７０の下方に容易にアクセスすることを可能にする。また、前記水平板部７１は、前記内部開口７３の周縁において立ち上がる堰７１ａを含み、当該堰７１ａは雨水などが前記内部開口７３を通じて前記機械室１５の内部に浸入することを抑制する。 The beam member 70 can have high rigidity by including the vertical plate portion 72 in addition to the horizontal plate portion 71 . This enables the inner openings 73 and 74 to be formed in the horizontal plate portion 71 and the vertical plate portion 72, respectively. The inner openings 73 and 74 are connected to each other, effectively preventing the beam member 70 from interfering with the engine 90 . Specifically, in this embodiment, as shown in FIG. 6, the engine 90 projects toward the beam member 70, and at least a fuel filler port 90a of the engine 90 extends from the left front pillar member 61d and the left rear pillar member 61e. , and protrudes upward from the upper end of each of the upper pillar members 64a to 64d. The internal opening 73 is formed by notching a portion including the left end portion of the horizontal plate portion 71 , and the internal opening 74 is formed by cutting a portion of the lower end portion of the vertical plate portion 72 corresponding to the internal opening 73 . It is formed by notching the part containing. The inner opening 73 is formed at a position vertically facing the spacer opening 51 formed in the bonnet spacer 50 , so that an operator can move downward from the beam member 70 through the inner opening 73 and the spacer opening 51 . allow easy access to Further, the horizontal plate portion 71 includes a weir 71 a that rises at the periphery of the internal opening 73 , and the weir 71 a prevents rainwater and the like from entering the machine room 15 through the internal opening 73 .
　前記ボンネットスペーサ５０は、追加部材であり、例えば前記機械室１５が前記幅方向に拡張された新たな建設機械に既存の前記第１ボンネット３０及び前記第２ボンネット４０をそのまま適用することを可能にするように、前記機械室１５が拡張された分をカバーするために追加される。具体的に、前記ボンネットスペーサ５０は、前記第１ボンネット３０と前記第２ボンネット４０との間に介在して前記機械室１５の中間部分、すなわち前記第１部分と前記第２部分との間の部分、を当該中間部分の上側において覆う。 The bonnet spacer 50 is an additional member, and enables the existing first bonnet 30 and the second bonnet 40 to be applied as they are to a new construction machine in which the machine room 15 is expanded in the width direction. , the machine room 15 is added to cover the expanded part. Specifically, the bonnet spacer 50 is interposed between the first bonnet 30 and the second bonnet 40 to provide an intermediate portion of the machine room 15, that is, between the first portion and the second portion. on the upper side of the intermediate portion.
　この実施の形態に係る前記ボンネットスペーサ５０は、スペーサ本体を有し、当該スペーサ本体は、図８に示すように、本体部５０ｃと、前側部５０ａと、後側部５０ｂと、を含む。前記本体部５０ｃは、前記上部旋回体１２の前記前後方向に延び、両端部である前端部及び後端部を有する。前記前側部５０ａは、前記本体部５０ｃの前記前端部から下方（この実施形態では斜め外側下方）に延び、前記後側部５０ｂは、前記本体部５０ｃの前記後端部から下方（この実施形態では斜め外側下方）に延びる。前記前側部５０ａ及び前記後側部５０ｂのそれぞれの下端部は前記梁部材７０の前記前端部及び前記後端部のそれぞれの上面に固定されている。すなわち、前記ボンネットスペーサ５０は前記梁部材７０を介して前記前側フレーム部材６２ｃ及び後側フレーム部材６２ｄに連結されている。前記ボンネットスペーサ５０は、前記第１ボンネット３０及び前記第２ボンネット４０のそれぞれの前記幅寸法（幅方向の寸法）よりも小さい幅寸法を有する。前記ボンネットスペーサ５０は、一対の縁部５０ｄをさらに含み、前記一対の縁部５０ｄのそれぞれは、前記本体部５０ｃ、前記前側部５０ａ及び前記後側部５０ｂのそれぞれの左右両端部から下向きに突出する。 The bonnet spacer 50 according to this embodiment has a spacer body, and as shown in FIG. 8, the spacer body includes a body portion 50c, a front side portion 50a, and a rear side portion 50b. The body portion 50c extends in the front-rear direction of the upper revolving body 12 and has a front end portion and a rear end portion, which are both ends. The front side portion 50a extends downward (diagonally outward and downward in this embodiment) from the front end of the body portion 50c, and the rear side portion 50b extends downward (in this embodiment) from the rear end of the body portion 50c. , extending diagonally outward and downward). Lower ends of the front side portion 50 a and the rear side portion 50 b are fixed to upper surfaces of the front end portion and the rear end portion of the beam member 70 , respectively. That is, the bonnet spacer 50 is connected to the front frame member 62c and the rear frame member 62d via the beam member 70. As shown in FIG. The bonnet spacer 50 has a width dimension smaller than the width dimension (dimension in the width direction) of each of the first bonnet 30 and the second bonnet 40 . The bonnet spacer 50 further includes a pair of edge portions 50d, and each of the pair of edge portions 50d protrudes downward from left and right ends of each of the main body portion 50c, the front side portion 50a, and the rear side portion 50b. do.
　図９に示すように、前記ボンネットスペーサ５０は、前記スペーサ開口５１が形成された前記スペーサ本体と、前記スペーサ開口５１を開閉することが可能な開閉部材５２と、を含む。前記スペーサ開口５１は、前記前側部５０ａの上部から前記本体部５０ｃの前後方向略中央部までの領域に形成され、前記機械室１５の内部と外部とを相互に連通するように前記前側部５０ａ及び前記本体部５０ｃを上下方向に貫通する。前記スペーサ開口５１は、前記梁部材７０の前記内部開口７３と対向するように位置し、かつ、前記内部開口７３よりも大きな形状を有する。前記開閉部材５２は、前記スペーサ開口５１を塞ぐことが可能となるように前記スペーサ開口５１よりもひと回り大きな形状を有する。前記開閉部材５２は、前記スペーサ開口５１の後端の位置でヒンジ５２ａを介して前記左右方向の軸回りに回動可能となるように前記スペーサ本体に連結され、当該回動によって開位置と閉位置との間を移動する、つまり前記スペーサ開口５１を開閉する、ことができる。前記開閉部材５２は、前記開位置では前記スペーサ開口５１を開放し、前記閉位置では前記スペーサ開口５１を閉じる。前記開閉部材５２は、前記スペーサ開口５１を開閉することが可能なものであればよく、例えば、前記スペーサ開口５１を覆う位置で前記ボンネットスペーサ５０に対して着脱されるものであってもよい。つまり、前記開位置は前記開閉部材５２が前記ボンネットスペーサ５０から離れた位置であってもよい。 As shown in FIG. 9, the bonnet spacer 50 includes the spacer main body in which the spacer opening 51 is formed, and an opening/closing member 52 capable of opening and closing the spacer opening 51 . The spacer opening 51 is formed in a region from the upper portion of the front side portion 50a to the approximate central portion of the main body portion 50c in the front-rear direction. and penetrates the main body portion 50c in the vertical direction. The spacer opening 51 is positioned to face the internal opening 73 of the beam member 70 and has a shape larger than the internal opening 73 . The opening/closing member 52 has a shape slightly larger than the spacer opening 51 so as to be able to block the spacer opening 51 . The opening/closing member 52 is connected to the spacer main body through a hinge 52a at the rear end position of the spacer opening 51 so as to be rotatable about the axis in the left-right direction. positions, i.e. opening and closing said spacer openings 51. The opening/closing member 52 opens the spacer opening 51 at the open position and closes the spacer opening 51 at the closed position. The opening/closing member 52 may be any member as long as it can open and close the spacer opening 51 . That is, the open position may be a position where the opening/closing member 52 is separated from the bonnet spacer 50 .
　前記中央足場２１は、作業者が当該中央足場２１の上に立って前記第２ボンネット４０及び前記開閉部材５２を開閉操作することを可能にする位置に設けられている。作業者が前記中央足場２１に立って前記第２ボンネット４０及び前記開閉部材５２を操作することにより前記機械室１５の前記上側開口及び前記ボンネットスペーサ５０の前記スペーサ開口５１をそれぞれ開放すると、図１０に示すように、前記スペーサ開口５１及び前記梁部材７０の前記内部開口７３を通じて、前記機械室１５内に収容された前記動力設備が上方の外部に露出され、当該動力設備のメンテナンスが容易に行われることが可能となる。本実施形態では、前記梁部材７０の下方に前記給油口９０ａが位置するが、前記のように開放された前記スペーサ開口５１及び前記内部開口７３を通じて作業者が前記給油口９０ａにアクセスすることが可能とされ、これにより、前記エンジン９０に前記給油口９０ａを通じてエンジンオイルが容易に補給されることが可能となる。 The central scaffolding 21 is provided at a position where a worker can stand on the central scaffolding 21 and open and close the second bonnet 40 and the opening/closing member 52 . When an operator stands on the central scaffold 21 and operates the second bonnet 40 and the opening/closing member 52 to open the upper opening of the machine room 15 and the spacer opening 51 of the bonnet spacer 50, as shown in FIG. 2, the power equipment housed in the machine room 15 is exposed to the upper outside through the spacer opening 51 and the inner opening 73 of the beam member 70, so that maintenance of the power equipment can be easily performed. It becomes possible to be In the present embodiment, the fuel filler port 90a is positioned below the beam member 70, and an operator can access the fuel filler port 90a through the spacer opening 51 and the internal opening 73 opened as described above. As a result, engine oil can be easily replenished to the engine 90 through the oil filler port 90a.
　上述のように、前記第１ボンネット３０及び前記第２ボンネット４０の少なくとも一方は前記開閉ボンネットであり、当該開閉ボンネットの一部は、前記閉位置において、前記ボンネットスペーサ５０及び前記開閉部材５２の上側に重なる。図７に示される例における前記開閉ボンネットである前記第２ボンネット４０は、図１１に示されるウェザーストリップ４２を含み、前記ウェザーストリップ４２は、前記第２ボンネット４０の外周縁に沿うように配置されて雨水等の浸入を防ぐ。前記ウェザーストリップ４２は、前記第２ボンネット４０が前記閉位置にあるときに前記ボンネットスペーサ５０の前記スペーサ本体及び前記開閉部材５２に対してその上側で重なることにより、前記開閉部材５２による高い密封性を維持する。一方、前記第１ボンネット３０は、図１１に示されるような縁端部３１を有し、当該縁端部３１は、前記ボンネットスペーサ５０に対してその上側で重なるが前記開閉部材５２には干渉しない位置で前記ボンネットスペーサ５０に接合されている。従って、前記第２ボンネット４０は前記開位置において前記開閉部材５２の開閉動作を許容し、前記閉位置において前記開閉部材５２の開閉動作を拘束する。このことは、前記開閉部材５２を閉位置にロックするための特別なロック機構を不要にする。 As described above, at least one of the first bonnet 30 and the second bonnet 40 is the opening/closing bonnet, and a part of the opening/closing bonnet is above the bonnet spacer 50 and the opening/closing member 52 in the closed position. overlaps with The second bonnet 40, which is the opening/closing bonnet in the example shown in FIG. 7, includes a weatherstrip 42 shown in FIG. to prevent rainwater from entering. When the second bonnet 40 is in the closed position, the weather strip 42 overlaps the spacer main body of the bonnet spacer 50 and the opening/closing member 52 on the upper side thereof, thereby achieving high sealing performance by the opening/closing member 52. to maintain On the other hand, the first bonnet 30 has an edge portion 31 as shown in FIG. It is joined to the bonnet spacer 50 at a position where it does not. Therefore, the second bonnet 40 permits the opening/closing operation of the opening/closing member 52 at the open position, and restrains the opening/closing operation of the opening/closing member 52 at the closed position. This eliminates the need for a special locking mechanism for locking the opening/closing member 52 in the closed position.
　以上説明した本実施形態に係る建設機械１０によれば、前記第１ボンネット３０及び前記第２ボンネット４０が前記左右方向に互いに間隔をあけて配置されても、当該第１ボンネット３０と当該第２ボンネット４０との間に前記ボンネットスペーサ５０が介在して前記機械室１５の中間部分をその上側において覆うことにより、前記第１ボンネット３０と前記第２ボンネット４０との間のスペースを通じて前記機械室１５がその上方の外部に露出することが防がれる。このことは、例えば前記第１及び第２ボンネット３０，４０が既存の建設機械のボンネットであって当該第１及び第２にボンネット３０，４０が共通部品として活用される場合において、前記機械室１５が前記幅方向に拡張された場合であっても、その拡張分を前記ボンネットスペーサ５０によって覆うことが可能である。 According to the construction machine 10 according to the present embodiment described above, even if the first bonnet 30 and the second bonnet 40 are arranged with an interval in the left-right direction, the first bonnet 30 and the second bonnet 40 can be By interposing the bonnet spacer 50 between the bonnet 40 and covering the intermediate portion of the machine room 15 on the upper side, the machine room 15 can be seen through the space between the first bonnet 30 and the second bonnet 40 . is prevented from being exposed to the outside above it. For example, when the first and second bonnets 30 and 40 are bonnets of existing construction machines and the first and second bonnets 30 and 40 are utilized as common parts, the machine room 15 is expanded in the width direction, the expanded portion can be covered by the bonnet spacer 50 .
　さらに、前記ボンネットスペーサ５０は、前記前側及び後側フレーム部材６２ｃ，６２ｄの剛性を高めるための前記梁部材７０と上下方向に重なるように配置されることにより、前記前側及び後側フレーム部材６２ｃ，６２ｄを補強するための梁部材７０を有効に利用して前記ボンネットスペーサ５０の変形が抑制されることを可能にする。具体的に、前記前側及び後側フレーム部材６２ｃ，６２ｄの捩じり変形は、当該前側及び後側フレーム部材６２ｃ，６２ｄに（この実施の形態では前記梁部材７０を介して）連結されている前記ボンネットスペーサ５０に作用する荷重を発生させるが、前記梁部材７０は、前記ボンネットスペーサ５０と上下方向に重なる位置で前記前側及び後側フレーム部材６２ｃ，６２ｄの捩じり変形を抑制することにより、当該捩じり変形に起因して前記ボンネットスペーサ５０に作用する前記荷重も有効に抑制することが可能である。このことは、前記ボンネットスペーサ５０に要求される強度を低くしてその形状の自由度（特に前記幅寸法の自由度）を高めることを可能にする。 Further, the bonnet spacer 50 is arranged so as to vertically overlap the beam member 70 for increasing the rigidity of the front and rear frame members 62c, 62d, thereby providing It is possible to suppress the deformation of the bonnet spacer 50 by effectively using the beam member 70 for reinforcing the spacer 62d. Specifically, the torsional deformation of the front and rear frame members 62c, 62d is connected to the front and rear frame members 62c, 62d (via the beam members 70 in this embodiment). Although the load acting on the bonnet spacer 50 is generated, the beam member 70 suppresses the torsional deformation of the front and rear frame members 62c and 62d at positions overlapping the bonnet spacer 50 in the vertical direction. , the load acting on the bonnet spacer 50 due to the torsional deformation can also be effectively suppressed. This makes it possible to reduce the strength required of the bonnet spacer 50 and increase the degree of freedom of its shape (especially the degree of freedom of the width dimension).
　以上のように、機械室及びこれを覆うボンネットを備え、かつ、前記機械室の幅方向への拡張に効率よく対応可能な建設機械が、提供される。前記建設機械は、下部走行体と、前記下部走行体に旋回可能に搭載される上部旋回体と、を備える。前記上部旋回体は、前側フレーム部材と、後側フレーム部材と、第１ボンネットと、第２ボンネットと、ボンネットスペーサと、梁部材と、を含む。前記前側フレーム部材は、前記上部旋回体の幅方向に延びる。前記後側フレーム部材は、前記上部旋回体の前記前後方向において前記前側フレーム部材の後方に配置され、前記前側フレーム部材と前記後側フレーム部材との間に、エンジンを収容する機械室の上部開口を画定するように前記上部旋回体の前記幅方向に延びる。前記第１ボンネットは、前記機械室の第１部分の上側で当該第１部分を覆う。前記第２ボンネットは、前記上部旋回体の前記幅方向において前記第１ボンネットと前記第２ボンネットとの間に間隔をおいて配置され、前記機械室の第２部分の上側で当該第２部分を覆う。前記ボンネットスペーサは、前記第１ボンネットと前記第２ボンネットとの間に介在する空間を塞ぐように配置されて前記前側フレーム部材及び前記後側フレーム部材に連結され、前記機械室の中間部分の上側で当該中間部分を覆う。前記中間部分は前記第１部分と前記第２部分との間の部分である。前記梁部材は、前記エンジンの上側において前記前側フレーム部材と前記後側フレーム部材とを前記前後方向に連結する。前記梁部材は、平面視で前記ボンネットスペーサと重なる部分を含むように配置される。 As described above, there is provided a construction machine that includes a machine room and a bonnet that covers the machine room, and that can efficiently accommodate expansion of the machine room in the width direction. The construction machine includes a lower traveling body and an upper revolving body rotatably mounted on the lower traveling body. The upper rotating body includes a front frame member, a rear frame member, a first bonnet, a second bonnet, a bonnet spacer, and a beam member. The front frame member extends in the width direction of the upper rotating body. The rear frame member is arranged behind the front frame member in the front-rear direction of the upper revolving body, and between the front frame member and the rear frame member is an upper opening of a machine room for accommodating an engine. extends in the width direction of the upper rotating body so as to define a . The first bonnet covers the first portion of the machine room above the first portion. The second bonnet is arranged with a space between the first bonnet and the second bonnet in the width direction of the upper rotating body, and is positioned above the second portion of the machine room. cover. The bonnet spacer is arranged to block the space interposed between the first bonnet and the second bonnet, is connected to the front frame member and the rear frame member, and is located above an intermediate portion of the machine room. cover the middle part with The intermediate portion is the portion between the first portion and the second portion. The beam member connects the front frame member and the rear frame member in the longitudinal direction above the engine. The beam member is arranged so as to include a portion that overlaps the bonnet spacer in plan view.
　前記ボンネットスペーサは、前記上部旋回体の幅方向に互いに間隔をあけて配置された前記第１ボンネットと前記第２ボンネットとの間に介在して前記機械室の前記中間部分をその上側において覆うことにより、前記第１ボンネットと前記第２ボンネットとの間のスペースを通じて前記機械室がその上方の外部に露出することを防ぐことができる。このことは、例えば前記第１及び第２ボンネットが既存の建設機械の第１ボンネットであって共通部品として活用される場合において、前記機械室が前記幅方向に拡張された場合であっても、その拡張分が前記ボンネットスペーサによって補足的に覆われることを可能にする。しかも、前記ボンネットスペーサと前記梁部材との重なり配置は、前記前側フレーム部材及び前記後側フレーム部材の捩じり変形を抑制するために前記前側フレーム部材と前記後側フレーム部材とを相互に連結する前記梁部材を利用して、前記捩じり変形に起因して前記ボンネットスペーサに作用する荷重を有効に抑制することを可能にし、これにより、前記ボンネットスペーサに要求される強度を低くして当該ボンネットスペーサの形状の自由度、特に前記幅寸法の自由度、を高めて前記機械室の前記幅方向の拡張への対応を容易にする。 The bonnet spacer is interposed between the first bonnet and the second bonnet spaced apart from each other in the width direction of the upper revolving body, and covers the intermediate portion of the machine room on its upper side. Therefore, it is possible to prevent the machine room from being exposed to the outside through the space between the first bonnet and the second bonnet. For example, when the first and second bonnets are the first bonnets of existing construction machines and are used as common parts, even if the machine room is expanded in the width direction, Allowing that extension to be covered complementary by the bonnet spacer. Moreover, the overlapping arrangement of the bonnet spacer and the beam member interconnects the front frame member and the rear frame member to suppress torsional deformation of the front frame member and the rear frame member. It is possible to effectively suppress the load acting on the bonnet spacer due to the torsional deformation by utilizing the beam member, thereby reducing the strength required of the bonnet spacer. By increasing the degree of freedom in the shape of the bonnet spacer, particularly the degree of freedom in the width dimension, it is possible to easily cope with the expansion of the machine room in the width direction.
　前記ボンネットスペーサは、前記機械室の内部と外部とを相互に連通するスペーサ開口が形成されたスペーサ本体と、前記スペーサ開口を開閉することが可能な開閉部材と、を含むことが、好ましい。前記スペーサ開口及び前記開閉部材は、前記機械室内に収容された設備のメンテナンスが前記スペーサ開口を通じて容易に行われることを可能にする。また、前記スペーサ開口及び前記開閉部材は、前記ボンネットスペーサ自体が開閉動作する必要をなくし、これにより、コストの節減を可能にする。 The bonnet spacer preferably includes a spacer main body having a spacer opening that communicates the inside and the outside of the machine room with each other, and an opening/closing member capable of opening and closing the spacer opening. The spacer opening and the opening/closing member allow maintenance of equipment housed in the machine room to be easily performed through the spacer opening. Also, the spacer opening and the opening/closing member eliminate the need for the bonnet spacer itself to open and close, thereby allowing for cost savings.
　前記第１ボンネット及び前記第２ボンネットの少なくとも一方は、前記機械室の前記上部開口を開く開位置と前記上部開口を閉じる閉位置との間で移動することが可能な開閉ボンネットであり、且つ、前記閉位置において前記ボンネットスペーサ及び前記開閉部材の上側に重なるように配置されることが、好ましい。前記開閉ボンネットは、前記閉位置において前記開閉部材の上側に重なって当該開閉部材を拘束することにより、前記開閉部材を閉状態にロックするための特別なロック機構を不要にし、または当該ロック機構を簡略化することを可能にし、これによりコストの節減を可能にする。 at least one of the first bonnet and the second bonnet is an opening/closing bonnet that can move between an open position that opens the upper opening of the machine room and a closed position that closes the upper opening; It is preferable that the bonnet spacer and the opening/closing member are arranged so as to overlap with each other in the closed position. The openable bonnet overlaps the upper side of the openable member in the closed position to constrain the openable member, thereby eliminating the need for a special locking mechanism for locking the openable member in the closed state, or eliminating the lock mechanism. Allows for simplification, which allows for cost savings.
　前記梁部材は、前記上部旋回体の前記前後方向に延びる水平部及び前記水平部から上向きに突出する垂直部を有し、前記スペーサ開口に対向する位置で前記梁部材を貫通する内部開口が形成されていることが、好ましい。前記内部開口は、前記開閉部材が前記スペーサ開口を開いた状態で作業者が前記内部開口及び前記スペーサ開口を通じて前記梁部材の下方へアクセスすることを可能にし、これにより、前記機械室内に収容された設備のメンテナンスがより容易に行われること可能にする。また、前記垂直部は、前記梁部材を有効に補強することにより、前記内部開口の形成による強度の低下を抑制することができる。 The beam member has a horizontal portion extending in the longitudinal direction of the upper rotating body and a vertical portion projecting upward from the horizontal portion, and an internal opening passing through the beam member is formed at a position facing the spacer opening. It is preferred that The inner opening allows an operator to access below the beam member through the inner opening and the spacer opening while the open/close member opens the spacer opening. This makes it easier to perform maintenance on equipment. Moreover, the vertical portion effectively reinforces the beam member, thereby suppressing a decrease in strength due to the formation of the internal opening.
　前記垂直部は、前記上部旋回体の前記前後方向に延びて前記開閉ボンネットを前記開閉動作の方向に案内する案内部を含むことが、好ましい。このことは、前記梁部材が前記開閉ボンネットを前記開閉動作の方向に案内する案内部材として機能することを可能にし、これにより、特別な案内部材を不要にし、または簡略化を可能にしてコストの節減を可能にする。 It is preferable that the vertical portion includes a guide portion that extends in the front-rear direction of the upper rotating body and guides the opening/closing bonnet in the direction of the opening/closing operation. This enables the beam member to function as a guide member for guiding the opening and closing bonnet in the direction of the opening and closing movement, thereby eliminating the need for a special guide member or enabling simplification and cost reduction. Enable savings.
　前記ボンネットスペーサは、前記前後方向に延びる本体部と、前記本体部の前端及び後端からそれぞれ下向きに延びる前側部及び後側部と、を含み、前記前側部及び前記後側部が前記梁部材に固定されていてもよい。つまり、前記ボンネットスペーサは前記梁部材を介して前記前側フレーム部材及び前記後側フレーム部材に連結されていてもよい。このように前記ボンネットスペーサの前記前側部及び前記後側部が前記梁部材に固定されることにより、前記ボンネットスペーサに作用する荷重がより確実に抑制される。 The bonnet spacer includes a body portion extending in the front-rear direction, and a front side portion and a rear side portion extending downward from a front end and a rear end of the body portion, respectively. may be fixed to That is, the bonnet spacer may be connected to the front frame member and the rear frame member via the beam member. By fixing the front side portion and the rear side portion of the bonnet spacer to the beam member in this manner, the load acting on the bonnet spacer is more reliably suppressed.
　前記梁部材の前記水平部は、例えば、前記上部旋回体の前記幅方向に沿った断面の形状が前記前後方向にわたって一様である板材により構成されていて当該板材の厚み方向が上下方向となる姿勢で配置されているものが、好適である。 For example, the horizontal portion of the beam member is formed of a plate having a uniform cross-sectional shape along the width direction of the upper rotating body over the front-rear direction, and the thickness direction of the plate is the vertical direction. Those that are arranged in a posture are preferred.
　前記梁部材の前記形状は、当該梁部材の高さ寸法を抑えながら当該梁部材の大きな幅寸法を確保して当該梁部材と前記ボンネットスペーサの少なくとも一部とが平面視で重なるように配置されることを容易にする。 The shape of the beam member is arranged such that the beam member and at least a portion of the bonnet spacer overlap in a plan view by securing a large width dimension of the beam member while suppressing the height dimension of the beam member. make it easier to
　上記実施形態はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。 The above embodiment is merely an example in all respects and should not be construed in a restrictive manner. Furthermore, all modifications and changes within the equivalent scope of claims are within the scope of the present invention.

Claims (7)

  1. 　下部走行体と、
    　前記下部走行体に旋回可能に搭載される上部旋回体と、を備え、
    　前記上部旋回体は、
    　前記上部旋回体の幅方向に延びる前側フレーム部材と、
    　前記上部旋回体の前後方向において前記前側フレーム部材の後方に配置された後側フレーム部材であって、前記前側フレーム部材と前記後側フレーム部材との間にエンジンを収容する機械室の上部開口を画定するように前記上部旋回体の前記幅方向に延びる後側フレーム部材と、
    　前記機械室の第１部分の上側で当該第１部分を覆う第１ボンネットと、
    　前記上部旋回体の前記幅方向において前記第１ボンネットとの間に間隔をあけて配置され、前記機械室の第２部分の上側で当該第２部分を覆う第２ボンネットと、
    　前記第１ボンネットと前記第２ボンネットとの間に介在する空間を塞ぐように配置されて前記前側フレーム部材及び前記後側フレーム部材に連結され、前記機械室の中間部分を前記中間部分の上側で覆い、前記中間部分は前記第１部分と前記第２部分との間の部分であるボンネットスペーサと、
    　前記エンジンの上側において前記前側フレーム部材と前記後側フレーム部材とを前記上部旋回体の前記前後方向に連結する梁部材と、を含み、前記梁部材は、平面視で、前記ボンネットスペーサと重なる部分を含むように配置される、建設機械。     a lower running body;
    an upper revolving body rotatably mounted on the lower traveling body,
    The upper revolving body is
    a front frame member extending in the width direction of the upper revolving body;
    A rear frame member disposed to the rear of the front frame member in the longitudinal direction of the upper rotating body, wherein an upper opening of a machine room accommodating an engine is formed between the front frame member and the rear frame member. a rear frame member extending in the width direction of the upper rotating body in a defining manner;
    a first bonnet covering the first portion of the machine room above the first portion;
    a second bonnet that is spaced apart from the first bonnet in the width direction of the upper rotating body and covers the second portion of the machine room above the second portion;
    arranged to block the space interposed between the first bonnet and the second bonnet, connected to the front frame member and the rear frame member, and extending the intermediate portion of the machine room above the intermediate portion; a hood spacer, wherein said intermediate portion is a portion between said first portion and said second portion;
    a beam member that connects the front frame member and the rear frame member on the upper side of the engine in the front-rear direction of the upper rotating body, wherein the beam member overlaps the bonnet spacer in a plan view. construction equipment, arranged to contain
  2. 　請求項１に記載の建設機械であって、前記ボンネットスペーサは、前記機械室の内部と外部とを相互に連通するスペーサ開口が形成されたスペーサ本体と、前記スペーサ開口を開閉することが可能な開閉部材と、を含む、建設機械。 2. The construction machine according to claim 1, wherein said bonnet spacer comprises a spacer main body having a spacer opening that communicates the inside and outside of said machine room with each other, and said spacer opening being capable of opening and closing said spacer opening. A construction machine, comprising: an opening and closing member;
  3. 　請求項２に記載の建設機械であって、前記第１ボンネット及び前記第２ボンネットの少なくとも一方は、前記機械室の前記上部開口を開く開位置と前記上部開口を閉じる閉位置との間で移動する開閉動作を行うことが可能な開閉ボンネットであり、且つ、前記閉位置において前記ボンネットスペーサ及び前記開閉部材の上側に重なるように配置される、建設機械。 3. The construction machine according to claim 2, wherein at least one of said first bonnet and said second bonnet moves between an open position that opens said upper opening of said machine room and a closed position that closes said upper opening. The construction machine is a construction machine which is capable of opening and closing the hood, and is arranged so as to overlap the bonnet spacer and the opening and closing member in the closed position.
  4. 　請求項２に記載の建設機械であって、前記梁部材は、前記上部旋回体の前記前後方向に延びる水平部及び前記水平部から上向きに突出する垂直部を有し、前記スペーサ開口に対向する位置で前記梁部材を上下方向に貫通する内部開口が形成されている、建設機械。 3. The construction machine according to claim 2, wherein the beam member has a horizontal portion extending in the longitudinal direction of the upper swing body and a vertical portion projecting upward from the horizontal portion, and faces the spacer opening. A construction machine, wherein an internal opening is formed vertically through the beam member at a position.
  5. 　請求項４に記載の建設機械であって、前記第１ボンネット及び前記第２ボンネットの少なくとも一方は、前記機械室の前記上部開口を開く開位置と前記上部開口を閉じる閉位置との間で移動する開閉動作を行うことが可能な開閉ボンネットであり、前記垂直部は、前記上部旋回体の前記前後方向に延びて前記開閉ボンネットを前記開閉動作の方向に案内する案内部を含む、建設機械。 5. The construction machine according to claim 4, wherein at least one of said first bonnet and said second bonnet moves between an open position that opens said upper opening of said machine room and a closed position that closes said upper opening. and the vertical portion includes a guide portion that extends in the longitudinal direction of the upper rotating body and guides the openable hood in the direction of the opening and closing operation.
  6. 　請求項１から５のいずれか１項に記載の建設機械であって、前記ボンネットスペーサは、前記前後方向に延びる本体部と、前記本体部の前端及び後端からそれぞれ下向きに延びる前側部及び後側部と、を含み、前記前側部及び前記後側部が前記梁部材に固定される、建設機械。 6. The construction machine according to any one of claims 1 to 5, wherein the bonnet spacer comprises a body portion extending in the longitudinal direction, and front and rear side portions extending downward from front and rear ends of the body portion, respectively. a side portion, wherein the front side portion and the rear side portion are secured to the beam member.
  7. 　請求項４または５に記載の建設機械であって、前記梁部材の前記水平部は、前記上部旋回体の前記幅方向に沿った断面の形状が前記前後方向にわたって一様である板材により構成されていて前記板材の厚み寸法が上下方向となる姿勢で配置されている、建設機械。 6. The construction machine according to claim 4, wherein the horizontal portion of the beam member is made of a plate material having a uniform cross-sectional shape along the width direction of the upper revolving body over the front-rear direction. The construction machine is arranged in such a manner that the thickness dimension of the plate material is in the vertical direction.
PCT/JP2023/002154 2022-02-28 2023-01-24 Construction machine WO2023162556A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002317463A (en) * 2001-04-20 2002-10-31 Kubota Corp Sound-insulating structure for work machine
JP2019019657A (en) * 2017-07-18 2019-02-07 株式会社クボタ Work machine
JP2020114963A (en) * 2019-01-17 2020-07-30 日立建機株式会社 Construction machine
JP2021050560A (en) * 2019-09-26 2021-04-01 コベルコ建機株式会社 Construction machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002317463A (en) * 2001-04-20 2002-10-31 Kubota Corp Sound-insulating structure for work machine
JP2019019657A (en) * 2017-07-18 2019-02-07 株式会社クボタ Work machine
JP2020114963A (en) * 2019-01-17 2020-07-30 日立建機株式会社 Construction machine
JP2021050560A (en) * 2019-09-26 2021-04-01 コベルコ建機株式会社 Construction machine

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