WO2017056556A1 - Engin de chantier - Google Patents

Engin de chantier Download PDF

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Publication number
WO2017056556A1
WO2017056556A1 PCT/JP2016/066253 JP2016066253W WO2017056556A1 WO 2017056556 A1 WO2017056556 A1 WO 2017056556A1 JP 2016066253 W JP2016066253 W JP 2016066253W WO 2017056556 A1 WO2017056556 A1 WO 2017056556A1
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WO
WIPO (PCT)
Prior art keywords
plate
support
cover
substrate
vertical rib
Prior art date
Application number
PCT/JP2016/066253
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　文則
裕司 藤田
圭悟 佐藤
育弘 魚谷
貴好 高田
元司 須磨
悟 櫻岡
Original Assignee
株式会社クボタ
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
Priority claimed from JP2015194967A external-priority patent/JP6644508B2/ja
Priority claimed from JP2015194969A external-priority patent/JP6563298B2/ja
Priority claimed from JP2015194968A external-priority patent/JP6563297B2/ja
Application filed by 株式会社クボタ filed Critical 株式会社クボタ
Priority to CN201680031284.8A priority Critical patent/CN107614799B/zh
Publication of WO2017056556A1 publication Critical patent/WO2017056556A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00

Definitions

  • the present invention relates to a work machine such as a backhoe.
  • Patent Document 1 Conventionally, working machines (backhoes) disclosed in Patent Documents 1 to 3 are known.
  • the working machine disclosed in Patent Document 1 includes a substrate (swivel substrate) that can be rotated about a vertical axis, an engine room provided at a rear portion on the substrate, and a cover that covers the engine room.
  • the cover is composed of a rear cover and a side cover.
  • the rear cover and the side cover are configured to be openable.
  • the lid body which can be opened and closed is attached to the side protector provided in the side of the rear cover.
  • Patent Document 1 In the working machine disclosed in Patent Document 1, by opening the cover (rear cover and side cover) and the lid, the engine room is accessed to maintain the equipment mounted in the engine room (maintenance and inspection). Can be done. However, even if the rear cover is opened, the upper front part of the engine room is not sufficiently opened. Therefore, it is difficult to access the front part of the engine room (in front of the engine) and perform equipment maintenance.
  • the present invention has been made to solve the above-described problems of the prior art, and is a cover that facilitates access to the front part of the engine room (front of the engine) and improves maintainability.
  • An object of the present invention is to provide a working machine having a support structure.
  • a work machine includes a substrate, an engine room provided at a rear portion of the substrate, a cover that covers the engine room, and a support frame that supports the cover, and the cover includes A rear cover that covers the rear and upper rear of the engine room; and a front cover that covers an upper front of the engine room; and the support frame includes a frame that supports the rear cover, and the front cover. And a supporting part to support.
  • the working machine includes a board, an engine room provided at a rear portion on the board, a cover that covers the engine room, and a support frame that supports the cover, and the covers are located at the rear and rear of the engine room.
  • the rear cover that covers the upper part and the front cover that covers the front upper part of the engine room are included.
  • the support frame includes a frame that supports the rear cover and a support portion that supports the front cover. Accordingly, the front cover and the rear cover are independently supported by the frame body and the support portion of the support frame. Therefore, it is possible to adopt a structure in which the front cover and the rear cover can be opened and closed independently, facilitating access to the front part of the engine room (front of the engine) and improving maintainability.
  • the work machine 1 includes a machine body 2, a cabin 3, a traveling device 4, and a work device 5.
  • the front side (left side in FIG. 39) of the driver seated in the driver's seat 6 of the cabin 3 is front
  • the rear side (right side in FIG. 39) is rearward
  • the left side (front side in FIG. 39) of the driver The left side and the right side of the driver (the back side in FIG. 39) will be described as the right side.
  • the horizontal direction K2 (see FIG. 40), which is a direction orthogonal to the front-rear direction K1 (see FIG. 39), will be described as the body width direction.
  • the machine body 2 has a swivel base 7 supported on the traveling device 4.
  • the swivel base 7 is supported by the traveling device 4 so as to be turnable to the left and right around a turning axis (vertical axis X) in the vertical direction via a turning bearing (not shown).
  • the swivel base 7 has a substrate (hereinafter referred to as a swivel substrate) 8 that revolves around the vertical axis X and a weight 9.
  • the swivel board 8 is formed of a steel plate or the like and is connected to a swivel bearing. As shown in FIGS. 39 and 42, the weight 9 is provided at the rear part of the swivel base 7.
  • an engine room ER is provided at the rear part of the swivel base 7.
  • an engine 10 As shown in FIG. 41 and the like, an engine 10, a hydraulic pump 11, a cooling fan 12, and the like are mounted in the engine room ER.
  • the engine 10 is disposed sideways so that the drive shaft center 10C faces the body width direction.
  • a hydraulic pump 11 is provided on the right side of the engine 10.
  • a cooling fan 12 is provided on the left side of the engine 10.
  • the periphery of the cooling fan 12 is surrounded by a shroud 13.
  • the hydraulic pump 11 and the cooling fan 12 are driven by the engine 10.
  • the cooling fan 12 generates an air flow from left to right.
  • a radiator 14 for cooling the cooling water supplied to the engine 10 is provided on the left side of the cooling fan 12.
  • An oil cooler 15 and a receiver (liquid receiver) 39 are provided on the left side of the radiator 14.
  • a capacitor 16 is provided on the left side of the oil cooler 15.
  • the condenser 16 cools the refrigerant supplied to the air conditioner unit 46 described later.
  • a battery 17 is provided on the left side of the capacitor 16.
  • a particle removing device 18 is provided on the upper right side of the engine 10.
  • a compressor 38 for compressing the refrigerant is provided above the left part of the engine 10.
  • An air cleaner 80 is provided on the left side of the oil cooler 15 and the condenser 16.
  • a side room TR is provided on the right side of the swivel base 7.
  • a fuel tank 19 that stores fuel for the engine 10 is mounted in the side room TR.
  • a control valve 20 is provided above the rear portion of the fuel tank 19.
  • the control valve 20 collects control valves that control the hydraulic actuators (hydraulic cylinders and the like) installed in the work machine 1.
  • Behind the fuel tank 19 is provided a hydraulic oil tank 21 that stores hydraulic hydraulic oil.
  • the upper, right, left and rear sides of the engine room ER are covered with a cover 30.
  • the upper and right sides of the side room TR are covered with a side cover 35.
  • a front cover 113 is provided in front of the cover 30 and to the left of the side cover 35.
  • the cabin 3 is mounted on the front portion on one side (left side) in the width direction on the revolving substrate 8. Inside the cabin 3, a driver's seat 6, a control device (not shown), an air conditioner unit 46, and the like are provided inside the cabin 3, a driver's seat 6, a control device (not shown), an air conditioner unit 46, and the like are provided.
  • the traveling device 4 includes a traveling frame 41 and a crawler device mounted on the left side and the right side of the traveling frame 41.
  • the crawler device includes an idler 42, a sprocket 43, a plurality of wheels 44, and these idlers 42, sprockets 43, and a crawler belt 45 wound around the wheels 44.
  • a dozer 26 is provided at the front portion of the traveling device 4.
  • the work device 5 is mounted on the front part of the swivel base 7.
  • the work device 5 includes a boom 27, an arm 28, and a work tool 29.
  • the work device has a boom cylinder 47, an arm cylinder 48, and a work tool cylinder 49 as drive mechanisms (actuators and the like) for the boom 27, arm 28, and work tool 29.
  • the boom cylinder 47, the arm cylinder 48 and the work tool cylinder 49 are constituted by hydraulic cylinders.
  • the base of the boom 27 is arranged around a horizontal axis (axis in the body width direction) via a first pivot (horizontal axis) 51 on a first bracket (support bracket) 50 provided on the right front portion of the turning substrate 8. It is pivotally supported.
  • the tip side of the boom 27 is pivotally supported around a horizontal axis via a second pivot 52 provided at the base of the arm 28.
  • a work tool 29 is pivotally supported at the distal end of the arm 28 via a third pivot 53 so as to be rotatable around the horizontal axis.
  • a bucket is attached as the work tool 29. Instead of or in addition to the bucket 29, other work tools may be mounted.
  • the boom cylinder 47 is provided across the second bracket 55 provided at the front portion of the turning substrate 8 and a midway portion in the longitudinal direction of the boom 27.
  • the second bracket 55 is provided with a fourth pivot (horizontal axis) 54 that pivotally supports the base end of the boom cylinder 47.
  • the boom 27 swings around the first pivot 51 by extending and retracting the boom cylinder 47.
  • the arm cylinder 48 is provided across the middle part in the longitudinal direction of the boom 27 and the base part of the arm 28.
  • the arm 28 swings around the second pivot 52 by extending and contracting the arm cylinder 48.
  • the work tool cylinder 49 is provided across the base of the arm 28 and one end side of the first link 56 and the second link 57. The other end side of the first link 56 is pivotally supported by the work tool 29.
  • the cover 30 includes a left cover 31, a right cover 32, a rear cover 33, and a front cover 34.
  • the left cover 31 covers the left side of the engine room ER. Specifically, the left side of the radiator 14, the oil cooler 15, the condenser 16, the battery 17, and the like is covered. As shown in FIG. 39, the left cover 31 has an annular edge that forms the air inlet 31a.
  • the intake port 31a is covered with a mesh plate such as a wire mesh.
  • the intake port 31 a is provided from the rear part to the left part of the left cover 31. As a result, outside air can be taken into the engine room ER from the left rear of the fuselage 2 through the intake port 31a.
  • the right cover 32 covers the right side of the engine room ER. Specifically, the engine 10, the hydraulic oil tank 17, the fuel filter 18, the separator 19, the fuel pump 20, and the tool box 21 are covered to the right. As shown in FIG. 42, the right cover 32 has an annular edge that forms the air inlet 32a. The air inlet 32a is covered with a mesh plate such as a wire mesh. The air inlet 32 a is provided from the rear part to the right part of the right cover 32. As a result, outside air can be taken into the engine room ER from the right rear side of the airframe 2 through the air inlet 32a.
  • the rear cover 33 is provided between the left cover 23 and the right cover 24, and covers the upper rear and the rear of the engine room ER. Specifically, the rear cover 33 covers the rear upper and rear portions of the engine 10, the hydraulic pump 11, the cooling fan 12, the shroud 13, the radiator 14, the oil cooler 15, and the condenser 16. As shown in FIG. 41, an annular edge forming an opening 33a is provided on the right portion of the rear cover 33.
  • the opening 33a is formed in a long hole that is long in the front-rear direction.
  • a tail pipe 181 to be described later protrudes upward from the opening 33a.
  • the front cover 34 is provided in front of the rear cover 33 and covers the front upper side of the engine room ER. Specifically, the front cover 34 covers the front upper portions of the engine 10, the hydraulic pump 11, the cooling fan 12, the shroud 13, the radiator 14, the oil cooler 15, and the condenser 16.
  • the side cover 35 includes a first side cover 36 and a second side cover 37.
  • the first side cover 36 covers the upper side of the side room TR. Specifically, the first side cover 36 covers the fuel tank 19, the control valve 20, and the hydraulic oil tank 21.
  • the left portion of the first side cover 36 is attached to the frame 190 via a hinge 191 so as to be opened and closed.
  • the frame 190 is provided between the cabin 3 and the first side cover 36 and extends in the front-rear direction.
  • the second side cover 37 covers the right side of the side room TR. Specifically, the right side of the fuel tank 19 is covered.
  • the second side cover 37 is fixed to the turning substrate 8.
  • the front cover 113 is in front of a first partition plate 64 to be described later and covers the space between the first vertical rib 61 and the second vertical rib 62 (hereinafter referred to as vertical rib space S4).
  • the front cover 113 is fixed to the frame 190.
  • ⁇ Swivel board> On the swivel board 8, an upper structure constituting a swirl frame by being integrated with the swivel board 8 is provided.
  • the upper structure is connected to the turning substrate 8 by welding.
  • the upper structure has a first vertical rib 61, a second vertical rib 62, a first partition plate 64, a second partition plate 65, a rear frame 66, and a third vertical rib 63. is doing.
  • the 1st vertical rib 61 and the 2nd vertical rib 62 are provided at intervals in the body width direction.
  • the first vertical rib 61 is provided on one side (left side) in the width direction (same as the machine body width direction) of the revolving substrate 8.
  • the second vertical rib 62 is provided on the other side (right side) of the turning substrate 8 in the width direction.
  • the first vertical rib 61 and the second vertical rib 62 extend substantially linearly in a plan view from the front to the rear on the turning substrate 8.
  • a vertical portion 61 a and an inclined portion 61 b are formed at the front portion of the first vertical rib 61.
  • the vertical portion 61 a rises substantially vertically from the upper surface of the turning substrate 8.
  • the inclined part 61b extends rearward and upward (obliquely upper rear) from the upper end of the vertical part 61a.
  • a vertical portion 62 a and an inclined portion 62 b are formed at the front portion of the second vertical rib 62.
  • the vertical portion 62 a rises substantially vertically from the upper surface of the turning substrate 8.
  • the inclined portion 62b extends rearward and upward (obliquely upper rear) from the upper end of the vertical portion 62a.
  • the first vertical rib 61 has a substantially elliptical cutout 61c at the bottom.
  • a pilot hose 160 (see FIG. 16) for circulating pilot oil is passed through the notch 61c.
  • the pilot hose 160 connects the control valve 20 and one side of a pilot valve (not shown). The other side of the pilot valve is connected to the control device or the like.
  • a first support plate 88 and a second support plate 89 are installed between the upper portion of the first vertical rib 61 and the upper portion of the second vertical rib 62.
  • the first support plate 88 is formed by bending a plate material such as a steel plate at two locations. Specifically, as shown in FIGS. 4 and 6, the first support plate 88 has a front portion 88c, an inclined portion 88d, and an upper portion 88e.
  • the front portion 88 c rises substantially vertically from the upper surface of the swivel substrate 8 and extends upward along the front portions of the vertical portion 61 a of the first vertical rib 61 and the vertical portion 62 a of the second vertical rib 62.
  • the inclined part 88d extends rearward and upward from the upper end of the front part 88c along the front part of the inclined part 61b of the first vertical rib 61 and the inclined part 62b of the second vertical rib 62.
  • the upper portion 88e extends rearward from the upper end of the inclined portion 88d along the upper portions of the first vertical rib 61 and the second vertical rib 62.
  • the second support plate 89 extends along the first plate portion 89 a straddling the first vertical rib 61 and the second vertical rib 62, and the upper portion of the first vertical rib 61.
  • the first plate portion 89 a is a plate material straddling the front portion of the first vertical rib 61 and the front portion of the second vertical rib 62.
  • the second plate portion 89 b extends from the first plate portion 89 a to the rear of the first partition plate 64 along the upper portion of the first vertical rib 61.
  • a frame 190 is fixed to the upper surface of the second support plate 89.
  • a hinge 191 that serves as a pivot point for the front cover 113 and the first side cover 36 is attached to the frame 190.
  • a step portion 61 e is formed on the upper surface of the front portion of the first vertical rib 61.
  • the step portion 61e is formed by raising one (front side) 61ea and raising the other (rear side) 61eb on the upper surface of the front portion of the first vertical rib 61.
  • An upper portion 88e of the first support plate 88 is placed on the front side 61ea of the step portion 61e.
  • the first plate portion 89a of the second support plate 89 is placed on the rear side 61eb of the step portion 61e.
  • the height of the second vertical rib 62 gradually decreases from the middle part toward the rear. Specifically, the height of the second vertical rib 62 is highest at the front portion 62c, and the upper portion 88e of the first support plate 88 and the front portion of the second support plate 89 are fixed to the front portion 62c. Yes.
  • a portion (referred to as an intermediate portion) 62d from the front portion 62c of the second vertical rib 62 to the rear first partition plate 64 is lower than the front portion 62c.
  • a portion (referred to as a rearward extending portion) 62e from the intermediate portion 62d to the rear rear frame 66 is lower than the intermediate portion 62d.
  • the height of the first vertical rib 61 is substantially constant behind the inclined portion 61b.
  • a step portion 62 f is formed on the upper surface of the front portion 62 c of the second vertical rib 62.
  • the stepped portion 62f is formed by raising one (front side) 62fa and raising the other (rear side) 62fb on the upper surface of the front portion of the second vertical rib 62.
  • An upper portion 88e of the first support plate 88 is placed on the front side 62fa of the stepped portion 62f.
  • the first plate portion 89a of the second support plate 89 is placed on the rear side 62fb of the stepped portion 62f.
  • the front end portion of the second support plate 89 (the front end portion of the first plate portion 89a) and the rear end portion of the first support plate 88 are connected.
  • a step as in the step portion 61e of the first vertical rib 61 and the step portion 61f of the second vertical rib 62. Is formed. That is, a step is formed between the second support plate 89 (first plate portion 89a) and the first support plate 88, as shown in FIGS.
  • a step is formed by the height of the upper surface of the second support plate 89 (first plate portion 89a) being different from the height of the upper surface of the first support plate 88.
  • the upper surface of the first support plate 88 is lower than the upper surface of the second support plate 89 (first plate portion 89a).
  • the first support plate 88 and the second support plate 89 are connected by fillet welding. Specifically, fillet welding is performed on the stepped portion of the upper surface of the connection portion between the first support plate 88 and the second support plate 89 (first plate portion 89a).
  • fillet welding is performed on the stepped portion of the upper surface of the connection portion between the first support plate 88 and the second support plate 89 (first plate portion 89a).
  • the support plate that connects the upper portion of the first vertical rib 61 and the upper portion of the second vertical rib 62 is composed of two members, a first support plate 88 and a second support plate 89. .
  • manufacture of a support plate becomes easy. That is, the support plate can be manufactured with high accuracy by making the front portion (first support plate 88), which has a complicated shape with many bends and openings, separate from the rear portion (second support plate 89). It becomes easy.
  • a configuration in which the support plate is formed from a single member may be employed.
  • a support plate (first support plate 88, second support plate 89) may be provided between the first vertical rib 61 and the second vertical rib 62.
  • the inner surface (right surface) of the first vertical rib 61 and the inner surface (left surface) of the second vertical rib 62 are connected by the support plates (first support plate 88, second support plate 89).
  • the first support plate 88 is formed with an annular edge portion that forms the first opening 88a from the upper portion 88e to the inclined portion 88d.
  • the front portion 88c of the first support plate 88 is formed with an annular edge that forms the second opening 88b. That is, the second opening 88b is formed below the first opening 88a.
  • a second hydraulic hose 152 and a third hydraulic hose 153 described later are passed through the first opening 88a.
  • a fourth hydraulic hose 144 described later is passed through the second opening 88b.
  • a first bracket (support bracket) 50 is connected to the front portion of the first support plate 88.
  • the first partition plate 64 and the second partition plate 65 are provided in front of the engine room ER and extend in the body width direction.
  • the right end portion of the first partition plate 64 is connected to the left side surface of the second vertical rib 62.
  • a cutout portion 64 a cut out in a U shape is formed on the right portion of the first partition plate 64.
  • a high plate portion 64b that rises higher than the other portions of the first partition plate 64 is formed at the approximate center in the machine width direction of the first partition plate 64 (to the left of the notch portion 64a).
  • the height of the highest portion of the high plate portion 64 b is equal to the height of the first vertical rib 61.
  • the rear end portion of the first vertical rib 61 is connected to the front surface of the high plate portion 64b.
  • a low plate portion 64c lower than the high plate portion 64b is formed on the left portion of the first partition plate 64 (left side of the high plate portion 64b).
  • an annular edge part forming the opening part 64d is provided in the upper right part of the high plate part 64b.
  • the opening 64 d is located between the first vertical rib 61 and the second vertical rib 62.
  • a connector 170 described later is attached at a position corresponding to the opening 64d.
  • the second partition plate 65 extends from the left side of the first partition plate 64 to the left. As shown in FIGS. 2 and 3, the second partition plate 65 is provided with an annular edge portion that forms the opening 65 a. A clamp tool 125 described later is attached to a position corresponding to the opening 65a.
  • the rear frame 66 is provided at the rear portion on the turning substrate 8 and extends in the body width direction.
  • the rear frame 66 has a front plate 66F, an upper plate 66U, and a rear plate 66R.
  • the rear end portion of the first vertical rib 61 is connected to the right portion of the front plate 66F.
  • the third vertical rib 63 is extended in the front-rear direction.
  • the third vertical rib 63 connects the first partition plate 64 and the second partition plate 65 to the rear frame 66.
  • the left end portion of the first partition plate 64 is connected to the front right surface of the third vertical rib 63.
  • the right end of the second partition plate 65 is connected to the front left surface of the third vertical rib 63.
  • the front portion of the third vertical rib 63 protrudes in front of the first partition plate 64 and the second partition plate 65.
  • the rear end portion of the third vertical rib 63 is connected to the front plate 66F and the upper plate 66U of the rear frame 66.
  • the upper structure further includes a rear support member 67, a support base 68, a reinforcing rib 69, and a reinforcing plate 70.
  • the rear support member 67 is erected at the center in the width direction on the revolving substrate 8.
  • the rear support member 67 is connected to the rear plate 66R of the rear frame 66.
  • a rear leg portion 94 of a support frame 90 described later is fixed to the upper surface of the rear support member 67.
  • a weight attachment portion 67a (see FIG. 17) for attaching the weight 9 is provided on the rear surface of the rear support member 67.
  • the support base 68 is provided on the right side of the second vertical rib 62.
  • the support base 68 supports equipment mounted on the turning substrate 8. Specifically, the hydraulic oil tank 21 is supported from below.
  • the support base 68 includes an upper plate 68 ⁇ / b> A and a vertical plate.
  • the vertical plate has a first vertical plate 68B and a second vertical plate 68C.
  • the upper plate 68 ⁇ / b> A receives the lower surface of the hydraulic oil tank 21 by contacting the lower surface of the hydraulic oil tank 21.
  • the upper plate 68A is provided above the revolving substrate 8 and spaced from the upper surface of the revolving substrate 8.
  • the upper plate 68A has a rectangular shape in plan view, and is arranged so that the short side extends in the body width direction.
  • the front end portion of the upper plate 68A is positioned in front of the first partition plate 64, and the rear end portion of the upper plate 68A is positioned rearward of the first partition plate 64.
  • the left portion of the upper plate 68A is connected to the right side surface of the second vertical rib 62.
  • the upper surface of the upper plate 68 ⁇ / b> A is lower than the upper end of the first vertical rib 61.
  • the upper plate 68A is connected to the upper portion of the first vertical plate 68B and the upper portion of the second vertical plate 68B.
  • the first vertical plate 68B and the second vertical plate 68C are erected on the turning substrate 8 with a space in the front-rear direction and extend in the body width direction.
  • the first vertical plate 68B supports the lower rear portion of the hydraulic oil tank 21 via the upper plate 68A.
  • the second vertical plate 68C is provided in front of the first vertical plate 68B.
  • the second vertical plate 68C supports the lower front portion of the hydraulic oil tank 21 via the upper plate 68A.
  • the first vertical plate 68B is connected to the right side surface of the rear extension 62e of the second vertical rib 62.
  • the second vertical plate 68C is connected to the right side surface of the intermediate portion 62d of the second vertical rib 62.
  • the upper plate 68A, the first vertical plate 68B, and the second vertical plate 68C of the support base 68 are connected to the right side surface of the second vertical rib 62, so that the second vertical rib 62 is connected to the upper plate.
  • the revolving substrate 8 is connected via 68A, the first vertical plate 68B, and the second vertical plate 68C.
  • a support stand 68 for supporting the hydraulic oil tank 21 is used to reinforce the strength of the second vertical rib 63. Therefore, it is not necessary to provide another reinforcing material (rib or the like) for reinforcing the second vertical rib 63, and the second vertical rib 63 can be reinforced while avoiding an increase in the weight of the turning substrate 8. Accordingly, it is possible to reduce the weight while reducing the weight while securing the strength of the swivel substrate 8.
  • the reinforcing rib 69 is erected on the right side of the rear part of the second vertical rib 62.
  • the reinforcing rib 69 extends in parallel with the second vertical rib 62.
  • the reinforcing rib 69 connects the first vertical plate 68A and the front plate 66F of the rear frame 66. Specifically, the front end portion of the reinforcing rib 69 is connected to the first vertical plate 68A.
  • the rear end portion of the reinforcing rib 69 is connected to the front plate 66F of the rear frame 66.
  • the upper front end of the reinforcing rib 69 is connected to the lower surface of the upper plate 68A.
  • the reinforcing plate 70 is provided above the revolving substrate 8 and is disposed in parallel with the upper surface of the revolving substrate 8.
  • the reinforcing plate 70 is connected to the second vertical rib 62, the first vertical plate 68A, the rear frame 66, and the reinforcing rib 69.
  • the front end portion of the reinforcing plate 70 is connected to the first vertical plate 68A.
  • the rear end portion of the reinforcing plate 70 is connected to the front plate 66F of the rear frame 66.
  • the left end portion of the reinforcing plate 70 is connected to the right side surface of the second vertical rib 62.
  • the right end portion of the reinforcing plate 70 is connected to the left side surface of the reinforcing rib 69.
  • the reinforcing rib 69, the rear frame 66, and the support stand 68 are connected to the right side surface of the second vertical rib 62 via the reinforcing plate 70. Thereby, the reinforcement effect of the 2nd vertical rib 62 can be improved.
  • the upper structure further includes a front support member 71, a cabin support member 72, a horizontal plate 73, a support stay 74, a weight mounting member 75, a left support member 76, and a right support member 77. Have.
  • the front support member 71 extends in the body width direction along the left front portion on the revolving substrate 8. The right end portion of the front support member 71 is connected to the left side surface of the first vertical rib 61.
  • the cabin support member 72 is a member that supports the cabin 3 via an anti-vibration rubber (not shown).
  • the cabin support member 72 includes a first support member 72A, a second support member 72B, a third support member 72C, and a fourth support member 72D.
  • the first support member 72 ⁇ / b> A is provided on the left front portion on the turning substrate 8.
  • the lower surface of the first support member 72 ⁇ / b> A is connected to the upper left portion of the front support member 71.
  • the second support member 72B is a front portion on the turning substrate 8 and is provided to the right of the first support member 72A.
  • the lower surface of the second support member 72 ⁇ / b> B is connected to the upper right part of the front support member 71.
  • the right end portion of the second support member 72 ⁇ / b> B is connected to the left side surface of the first vertical rib 61.
  • the third support member 72C is provided on the left side of the turning substrate 8 and behind the second support member 72B.
  • the rear portion of the third support member 72C is connected to the front surface of the second partition plate 65.
  • the fourth support member 72D is provided behind the first support member 72A and to the right of the third support member 72C. The rear portion of the fourth support member 72D is connected to the front surface of the second partition plate 65.
  • the horizontal plate 73 is provided above the revolving substrate 8 and below the second plate portion 89 b of the second support plate 89.
  • the horizontal plate 73 extends in the body width direction.
  • the horizontal plate 73 connects the second vertical rib 62, the third vertical rib 63, and the first partition plate 64.
  • the right end portion of the horizontal plate 73 is connected to the left side surface of the second vertical rib 62.
  • the left end portion of the horizontal plate 73 is connected to the right side surface of the third vertical rib 63.
  • the front end portion of the horizontal plate 73 is connected to the rear surface of the first partition plate 64.
  • the support stay 74 is connected to the upper surface of the turning board 8.
  • the support stay 74 has a first stay 74A and a second stay 74B.
  • the first stay 74A is erected on the right part on the upper plate 66U of the rear frame 66.
  • the second stay 74B is erected on the left portion on the upper plate 66U of the rear frame 66.
  • the first stay 74A is formed higher than the second stay 74B.
  • Mount members 117 first mount member 121 and second mount member 122
  • that support the engine 10 are fixed to the upper surfaces of the support stays 74 (first stay 74A and second stay 74B).
  • the weight attachment member 75 has a right weight attachment member 75R and a left weight attachment member 75L.
  • the right weight attachment member 75 ⁇ / b> R is provided at the right rear portion on the turning substrate 8 and is connected to the right end portion of the rear frame 66.
  • the left weight attachment member 75 ⁇ / b> L is provided at the left rear portion on the turning substrate 8 and is connected to the left end portion of the rear frame 66.
  • the weight attachment member 75 (weight attachment member 75R, weight attachment member 75L) is provided with an attachment portion 75a (see FIGS. 28 and 33) for attaching the weight 9 so as to protrude rearward.
  • the weight 9 is attached to the weight attachment portion 67a of the rear support member 67 and the attachment portion 75a of the weight attachment member 75 (weight attachment member 75R, weight attachment member 75L).
  • the left support member 76 has a vertical plate 76A and a horizontal plate 76B.
  • the vertical plate 76A is erected on the left portion on the turning substrate 8 and extends in the front-rear direction.
  • the vertical plate 76A is connected to the left end portion of the second partition plate 65 and extends backward from the left end portion.
  • the horizontal plate 76B is connected to the upper portion of the vertical plate 76A and the upper portion of the second partition plate 65.
  • the left support member 76 supports a side leg portion 96 of the support frame 90 described later.
  • the right support member 77 is provided on the right front side of the support base 68.
  • a stay (not shown) is fixed to the upper surface of the right support member 77.
  • the right support member 77 supports a receiving plate 40 of the control valve 20 described later via the stay.
  • the turning substrate 8 has a plurality of annular edges that form openings.
  • the annular edge has a first edge 81, a second edge 82, a third edge 83, a fourth edge 84, a fifth edge 85, and a sixth edge 86.
  • the first edge 81 and the second edge 82 are formed in a region (referred to as a first region) surrounded by the second vertical rib 62, the third vertical rib 63, the first partition plate 64, and the rear frame 66. .
  • the first edge 81 is formed at the right rear portion of the first region.
  • the second edge portion 82 is formed at the left front portion of the first region.
  • the opening formed by the first edge portion 81 has a rectangular shape in which a corner portion of the left front portion is cut out in a plan view.
  • the opening formed by the second edge 83 is a rectangle with a right rear corner cut out in plan view.
  • the first edge portion 81 and the second edge portion 82 are separated by a partition plate portion 87.
  • the partition plate portion 87 is a part of the turning substrate 8, and is between the left front portion of the opening portion formed by the first edge portion 81 and the right rear portion of the opening portion formed by the second edge portion 83. It is provided so as to be separated.
  • the partition plate portion 87 between the first edge portion 81 and the second edge portion 82, a decrease in strength of the swivel substrate 8 is suppressed while ensuring the area of the opening portion.
  • the opening formed by the first edge 81 and the opening formed by the second edge 83 are both formed by cutting out rectangular corners, and the partition plate 87 is formed in the notched portion. Is provided. This makes it possible to bring the centers of the two openings closer.
  • the first edge 81 is provided below the oil pan 10 ⁇ / b> A of the engine 10.
  • the area of the opening formed by the first edge 81 is formed larger than the area of the oil pan 10A.
  • the second edge portion 82 is provided below the oil filter 10 ⁇ / b> B of the engine 10.
  • the area of the opening formed by the second edge 82 is larger than the area of the oil filter 10B. Accordingly, the oil pan 10 ⁇ / b> A can be accessed from the opening formed by the first edge portion 81. Further, the oil filter 10B can be accessed from the opening formed by the second edge portion 82. Therefore, maintenance of the engine 10 can be easily performed.
  • the first edge 81 and the second edge 82 are normally closed by a perforated plate (not shown) such as punching metal. Therefore, at the time of maintenance, the first edge 81 and the second edge 82 are opened by removing the perforated plate.
  • the third edge 83 is formed on the right rear portion of the turning substrate 8. Specifically, the third edge 83 is formed in a region (referred to as a second region) substantially surrounded on three sides by the reinforcing rib 69, the first vertical plate 68A of the support base 68, and the right weight attaching member 75R. Yes. In the second region, piping or the like connected to the fuel filter 22 is arranged.
  • the fourth edge portion 84 is formed on the left rear portion of the turning substrate 8. Specifically, the fourth edge portion 84 is formed in a region (referred to as a third region) substantially surrounded on three sides by the third vertical rib 63, the second partition plate 65, and the left weight attachment member 75L. In the third region, a radiator 14, an oil cooler 15, a capacitor 16, a battery 17, and the like are arranged.
  • the fifth edge 85 is formed in the approximate center of the turning substrate 8. Specifically, the fifth edge 85 is formed in front of the first partition plate 64 and below the notch 61 c of the first vertical rib 61. An upper portion of a rotary joint 79 described later is inserted into the opening formed by the fifth edge portion 85 (see FIG. 15 and the like). The rotary joint 79 is provided to supply hydraulic oil from the control valve 20 to the hydraulic actuator of the traveling device 4.
  • the center of the opening formed by the fifth edge 85 is the pivot axis (vertical axis X). Accordingly, the rotational axis of the rotary joint 79 coincides with the pivot axis (vertical axis X).
  • the sixth edge 86 is formed on the right side of the center of the revolving substrate 8. Specifically, the sixth edge 86 is formed in front of the first partition plate 64 and between the first vertical rib 61 and the second vertical rib 62. The sixth edge 86 is located on the right rear side of the fifth edge 85.
  • a swing motor 112 (see FIG. 15 and the like) is attached to the opening formed by the sixth edge 86. The turning motor 112 turns the turntable 7 about the turning axis (vertical axis X).
  • a support frame 90 is provided on the revolving substrate 8. As shown in FIGS. 10 and 11, the support frame 90 includes a frame body 91 and a support portion 92.
  • the frame body 91 mainly supports the rear cover 33 among the four covers 30.
  • the frame body 91 includes a front leg portion 93, a rear leg portion 94, a connecting portion 95, a side leg portion 96, a bridging portion 97, and a support mechanism 101.
  • the front leg portion 93 is erected in front of the engine room ER.
  • the front leg portion 93 has a support 93A and a lower plate 93B.
  • the lower plate 93B is fixed to the rear portion of the upper surface of the second support plate 89 by a fastening member (bolt).
  • the lower plate 93 ⁇ / b> B is fixed to the upper surface of the second plate portion 89 b of the second support plate 89 across the front and rear of the first partition plate 64.
  • the support column 93A is fixed to the upper surface of the lower plate 93B and extends upward from the upper surface.
  • the support column 93A is an angle member having a substantially L-shaped cross section, and is disposed with the two surfaces facing right and rear.
  • the front leg portion 93 is fixed on the upper surface of the second plate portion 89b of the second support plate 89 and behind the first partition plate 64. Therefore, the front leg portion 93 does not reduce the front space inside the engine room ER, and the front space inside the engine room ER can be used effectively. Further, since the front leg portion 93 (lower plate portion 93 ⁇ / b> B) is fixed across the front and rear of the first partition plate 64, the first partition plate 64 is positioned below the front leg portion 93. Therefore, the front leg portion 93 can be supported by the first partition plate 64.
  • the front leg portion 93 (lower plate portion 93B) may be fixed above the first vertical rib 61 and behind the first partition plate 64, and is not necessarily fixed to the upper surface of the second plate portion 89b. Absent.
  • the front leg portion 93 (lower plate portion 93B) may be fixed to the upper portion of the first vertical rib 61 via a member different from the second plate portion 89b. Or it is good also as a structure which fixes the front leg part 93 (lower board part 93B) directly to the upper part of the 1st vertical rib 61.
  • the rear leg portion 94 is erected on the rear side of the engine room ER. Specifically, the rear leg portion 94 is fixed to the upper surface of the rear support member 67 and extends upward, then bends and extends forward. As shown in FIGS. 7, 9, 11, etc., a connecting plate 94 ⁇ / b> A is attached to the front end of the rear leg portion 94. As shown in FIGS. 7 to 9 and the like, the communication unit 95 is provided above the engine room ER. As shown in FIG. 10, FIG. 11, etc., the communication part 95 connects the front leg part 93 and the rear leg part 94.
  • the communication unit 95 includes a connection plate 95A, a first communication unit 95B, and a second communication unit 95C.
  • the first connecting portion 95B and the second connecting portion 95C are connected to the front leg portion 93.
  • the first connecting portion 95B extends from the upper part of the front leg portion 93 toward the rear.
  • the first connecting portion 95B is an angle member having an L-shaped cross section, and is disposed with the two surfaces facing right and downward.
  • the second connecting portion 95C has a front plate portion 95b and a side plate portion 95c.
  • the front plate portion 95b covers the front of the support post 93A.
  • the side plate portion 95c covers the left side of the column 93A and the first connecting portion 95B.
  • the upper part of the side plate part 95c extends rearward.
  • connection plate 95A is attached to the rear ends of the first connecting portion 95B and the second connecting portion 95C.
  • the connection plate 94A and the connection plate 95A are fastened by fastening members (bolts).
  • the front leg part 93 and the rear leg part 94 are connected.
  • the side legs 96 are erected on one side (left side) in the body width direction. Specifically, as shown in FIGS. 6, 7, and 12, the side legs 96 are fixed to the upper surface of the horizontal plate 76 ⁇ / b> B of the left support member 76, and extend upward from the upper surface of the horizontal plate 76 ⁇ / b> B. Yes.
  • the side legs 96 are slightly inclined so as to extend rearward as they extend upward.
  • a hinge 196 is attached to the lower rear portion of the side leg portion 96.
  • the hinge 196 has a mounting piece 196a, a vertical axis 196b, an outer cylinder 196c, a first mounting plate 196d, and a second mounting plate 196e.
  • the rear portion of the attachment piece 196a is fixed to the inner surface of the left cover 31.
  • An outer cylinder 196c is fixed to the front portion of the mounting piece 196a.
  • the vertical axis 196b is fixed to the side leg portion 96 via the first mounting plate 196d and the second mounting plate 196e.
  • a vertical axis 196b passes through the outer cylinder 196c, and the outer cylinder 196c is rotatable about the vertical axis 196b. Therefore, the attachment piece 196a fixed to the outer cylinder 196c and the left cover 31 fixed to the attachment piece 196a can be rotated around the vertical axis 196b.
  • the bridging portion 97 connects the upper portion of the side leg portion 94 and the upper portion of the second connecting portion 95C.
  • the bridging portion 97 has a bridging beam 97A and a bridging plate 97B.
  • the bridge beam 97A connects the upper right portion of the rear leg portion 94 and the upper left portion of the side plate portion 95c of the second connecting portion 95C.
  • the bridging plate 97B is provided on the upper portion of the bridging beam 97A, and connects the upper surface of the rear leg portion 94 and the upper left surface of the side plate portion 95c of the second connecting portion 95C.
  • the rear portion of the cabin 3 is placed on the bridge plate 97B via an anti-vibration rubber 114 (see FIG. 20) to be described later.
  • the support portion 92 supports the front cover 34. As shown in FIGS. 10 and 11, the support portion 92 includes a first support body 98 and a second support body 99. As shown in FIGS. 7 to 9, the first support body 98 extends from the connecting portion 95 to one side (left side) in the body width direction.
  • the first support 98 has a first front member 98A and a first rear member 98B.
  • the first front member 98 ⁇ / b> A is located on the left side of the connecting portion 95.
  • the right end portion of the first front member 98A is connected to the upper left surface of the side plate portion 95c of the second connecting portion 95C.
  • the first front member 98A has an upper plate portion 98a, a vertical plate portion 98b, a lower plate portion 98c, and a front plate portion 98d.
  • the upper plate portion 98a, the vertical plate portion 98b, the lower plate portion 98c, and the front plate portion 98d are formed by bending a single metal plate in a substantially step shape.
  • the upper plate part 98a is located on the left side of the connecting part 95 and extends in the body width direction (left side). As shown in FIG. 8 and the like, the upper plate portion 98a is located behind the support 93A of the front leg portion 93. The upper surface of the upper plate portion 98a is located at substantially the same height as the upper edge of the side plate portion 95c of the second connecting portion 95C.
  • the vertical plate portion 98b extends downward from the front portion of the upper plate portion 98a.
  • the lower plate portion 98c extends forward from the lower portion of the vertical plate portion 98b. As shown in FIG. 10, on the upper surface of the lower plate portion 98c, a placement portion 98i on which a vibration isolating rubber is placed is provided.
  • the placement portions 98i are provided at a plurality of locations (two locations in the present embodiment) at intervals in the body width direction.
  • the lower plate portion 98c is fixed to the upper surface of the bridge plate 97B. Specifically, as shown in FIG. 20, the lower plate portion 98c is fixed to the upper surface of the bridging plate 97B by bolts together with the vibration isolating rubber 114 placed on the placement portion 98i.
  • the front plate portion 98d has an inclined portion 98f and a vertical portion 98g.
  • the inclined portion 98f extends forward and downward from the front portion of the lower plate portion 98c.
  • the vertical portion 98g extends downward from the inclined portion 98f to the second partition plate 65.
  • the front plate portion 98 d is a first partition plate that partitions the engine room ER and the left front space of the engine room ER (the arrangement space S ⁇ b> 3 of the cabin 3). Function as. In the following description, the front plate portion 98d may be referred to as a first partition plate 98d.
  • the first rear member 98B is located on the left side of the connecting portion 95 and extends in the body width direction (left side).
  • the first rear member 98B is provided behind the first front member 98A and spaced from the first front member 98A.
  • the first rear member 98B is connected to the first front member 98A by the connecting member 102.
  • the first rear member 98B is formed shorter than the first front member 98A.
  • the length of the first rear member 98B is not more than half the length of the first front member 98A.
  • the left end portion of the first rear member 98B and the left end portion of the first front member 98A are at the same position (aligned position) in the body width direction. Accordingly, as shown in FIGS. 8 to 10, a space S1 is formed between the right end portion of the first rear member 98B and the side plate portion 95c of the second connecting portion 95C.
  • a locking portion 98e and a lock portion 98h are provided at the left end portion of the first rear member 98B.
  • the locking portion 98e is a portion where a locking piece (not shown) provided on the inner surface of the left cover 31 is locked with the left cover 31 closed.
  • the lock portion 98h is a member that locks the locking piece in a state where the locking piece provided on the left cover 31 is locked to the locking portion 98e.
  • the lock portion 98h can perform locking and unlocking by rotating back and forth with the attachment portion to the first rear member 98B as a fulcrum.
  • the left cover 31 cannot be opened by executing the lock by the lock portion 98h, and the left cover 31 can be opened by releasing the lock.
  • the second support body 99 extends from the connecting portion 95 to the other side (right side) in the body width direction.
  • the second support 99 has a second front member 99A and a second rear member 99B.
  • the second front member 99A is located on the right side of the connecting portion 95 and extends in the body width direction (right side).
  • the left end portion of the second front member 99A is connected to the upper portion of the first connecting portion 95B.
  • a notch 95a is formed in the upper portion of the first connecting portion 95B, and the second front member 99A is fitted into the notch 95a.
  • the left end portion of the second front member 99A is in contact with the right surface of the side plate portion 95c of the second connecting portion 95C.
  • the second front member 99A is a channel material having a substantially U-shaped cross section, and is arranged with three surfaces facing upward, forward, and rearward.
  • the second front member 99A is disposed in front of the upper plate portion 98a of the first front member 98A.
  • the second rear member 99B is located on the right side of the connecting portion 95 and extends in the body width direction (right side).
  • the second rear member 99B is located behind the second front member 99A.
  • the second front member 99A and the second rear member 99B are disposed so as to be separated from each other in the front-rear direction. Accordingly, as shown in FIGS. 9 to 11, a space S2 is formed between the second front member 99A and the second rear member 99B.
  • the left end portion of the second rear member 99B is connected to the rear upper portion of the connecting portion 95.
  • the second rear member 99B is an angle member having an L-shaped cross section, and is disposed with two surfaces facing upward and rearward.
  • the second rear member 99B is disposed behind the upper plate portion 98a of the first front member 98A.
  • a locking portion 99a and a lock portion 99b are provided at the right end portion of the second rear member 99B.
  • the locking portion 99a is a portion where a locking piece (not shown) provided on the inner surface of the right cover 32 is locked with the right cover 32 closed.
  • the lock portion 99b is a member that locks the locking piece in a state where the locking piece provided on the right cover 31 is locked to the locking portion 99a.
  • the lock part 99b can perform and release the lock by rotating back and forth with the attachment part to the second rear member 99B as a fulcrum.
  • the right cover 32 cannot be opened by performing the lock by the lock portion 98h, and the right cover 32 can be opened by releasing the lock.
  • FIG. 41 shows a state in which the front cover 34 is fixed by the fastening members B1 to B7.
  • the fastening members B1 and B2 fix the front cover 34 and the first front member 98A.
  • the fastening member B3 fixes the front cover 34 and the first rear member 98B.
  • the fastening members B4 and B5 fix the front cover 34 and the second front member 99A.
  • the fastening members B6 and B7 fix the front cover 34 and the second rear member 99B.
  • a wall plate 100 is provided between the side leg portion 96 and the connecting portion 95.
  • the wall plate 100 has a rising portion 100A and an extending portion 100B.
  • the rising portion 100 ⁇ / b> A rises from the front upper part of the third vertical rib 63.
  • the extending portion 100B extends rearward from the upper portion of the rising portion 100A.
  • the upper end portion of the rising portion 100A is in contact with the lower surface of the bridge beam 97A.
  • the right end portion of the first rear member 98B is connected to the left surface of the extending portion 100B.
  • the front edge portion of the wall plate 100 is connected to the rear surface of the first partition plate (front plate portion) 98d.
  • the first partition plate (front plate portion) 98d, the first rear member 98B, and the second rear member 99B are omitted.
  • a second partition plate 103 is provided below the second front member 99A.
  • the second partition plate 103 partitions the engine room ER and a space (vertical rib space) S ⁇ b> 4 between the first vertical rib 61 and the second vertical rib 62.
  • the second partition plate 103 includes an upper plate 103A, an intermediate plate 103B, and a lower plate 103C.
  • the upper plate 103A extends downward from the lower part of the second front member 99A.
  • the left end portion of the upper plate 103A is connected to the right surface of the first connecting portion 95B and the right surface of the side plate portion 95c of the second connecting portion 95C.
  • the right end portion of the upper plate 103A and the second front member 99A and the second rear member 99B are connected by a connecting member 104.
  • the intermediate plate 103B extends forward and downward from the lower portion of the upper plate 103A.
  • the left end portion of the intermediate plate 103B is connected to the right surface of the side plate portion 95c of the second connecting portion 95C.
  • a rectangular notch 103D is formed in the lower left portion of the intermediate plate 103B (below the connecting portion with the side plate portion 95c).
  • the support 93A of the front leg portion 93 passes through the notch 103D.
  • the lower plate 103C extends downward from the lower portion of the intermediate plate 103B.
  • the lower plate 103 ⁇ / b> C covers the front of the notch 64 a of the first partition plate 64.
  • the second partition plate 103 overlaps the side plate portion 95c of the second connecting portion 95C as viewed from the right.
  • the first partition plate (front plate portion) 98d overlaps the side plate portion 95c of the second connecting portion 95C as viewed from the left.
  • the side plate portion 95c of the second connecting portion 95C is formed to overlap the first partition plate (front plate portion) 98d and the second partition plate 103 in a side view. Therefore, the first partition plate 98d and the second partition plate 103 can be connected to the front leg portion 93 via the second connecting portion 95C.
  • the front leg part 93 is reinforced from the right side and the left side, the strength (rigidity) of the front leg part 93 is improved. Further, the shielding property of the engine room ER is improved, and the hot air in the engine room ER is suppressed from leaking to other spaces.
  • the support mechanism 101 includes a first shaft 109 ⁇ / b> A, a second shaft 109 ⁇ / b> B, a horizontally installed material 105, a bending member 106, a bracket 107, and a cylinder 108.
  • the support mechanism 101 supports the rear cover 33 so that it can be opened and closed.
  • the first shaft 109A is attached to the rear portion of the first rear member 98B.
  • the second shaft 109B is attached to the rear part of the second rear member 99B.
  • the first shaft 109A and the second shaft 109B extend in the body width direction.
  • the lateral installation material 105 is disposed behind the first support body 98 and the second support body 99.
  • the horizontally installed material 105 extends in the body width direction from the rear of the first rear member 98B to the rear of the second rear member 99B.
  • the left end portion of the horizontally installed material 105 is located to the right of the left end portion of the first rear member 98B.
  • the right end portion of the horizontally installed material 105 is located to the left of the right end portion of the second rear member 99B.
  • a first cylindrical portion 105 a and a second cylindrical portion 105 b are provided at the front portion of the horizontally installed material 105.
  • a first shaft 109A is rotatably inserted into the first tubular portion 105a.
  • a second shaft 109B is rotatably inserted into the second cylindrical portion 105b.
  • the bending member 106 is connected to the rear portion of the lateral installation material 105.
  • the bending member 106 extends rearward from the lateral member 105 and then curves and extends downward.
  • the back surface of the rear cover 33 is fixed along the curvature of the upper edge of the bending member 106.
  • the rear cover 33 can be rotated upward together with the horizontally installed material 105 with the first shaft 109A and the second shaft 109B as fulcrums. By rotating the rear cover 33 upward, the rear cover 33 can be opened.
  • the bracket 107 is fixed to the rear portion of the connection plate 94 ⁇ / b> A attached to the front end of the rear leg portion 94.
  • the cylinder 108 connects the lower end portion of the bending member 106 and the bracket 107.
  • the cylinder 108 assists the operation of rotating the rear cover 33 upward to open it.
  • the front cover 34 is supported by the frame body 91
  • the rear cover 33 is supported by the support portion 92. That is, the front cover 34 and the rear cover 33 are supported independently by the frame body 91 and the support portion 92 of the support frame 90.
  • one support frame 90 has a structure for supporting the front cover 33 and a structure for supporting the rear cover 33. Therefore, it is possible to adopt a structure in which the front cover 34 and the rear cover 33 can be opened and closed independently. Thereby, it becomes possible to selectively open the front cover 34 and the rear cover 33 in accordance with a portion requiring maintenance.
  • the front cover 34 is fixed to the upper surfaces of the first front member 98A, the first rear member 98B, the second front member 99A, and the second rear member 99B by fastening members B1 to B7. Therefore, the front cover 34 can be placed on the upper surface of the first support body 98 and the upper surface of the second support body 99 to be reliably supported. Further, the front cover 34 can be easily detached from the first support body 98 and the second support body 99 by releasing the fastening of the fastening members B1 to B7.
  • the support frame 90 since the frame body 91 of the support frame 90 includes the front leg portion 93, the rear leg portion 94, the side leg portion 96, and the bridging portion 97, the support frame 90 has high strength (rigidity).
  • the first front member 98A is connected to the bridging portion 97 on which the rear portion of the cabin 3 is placed, the strength of the first support body 98A can be increased using the bridging portion 97 without using another member. Can be effectively increased.
  • ⁇ Opening and closing the cover and side cover> As described above, the left cover 31 is rotatable around the longitudinal axis 196 b of the hinge 196 attached to the side leg portion 96. Thereby, as shown by the phantom line (two-dot chain line) in FIG. 41, the left cover 31 can be rotated forward to be opened.
  • the right cover 32 is attached to the second side cover 37 via a hinge 192.
  • the hinge 192 has a vertical axis 192a and a rotating member 192b.
  • the rotating member 192b rotates about the vertical axis 192a.
  • the vertical axis 192 a is attached to a bracket 193 fixed to the inner surface of the second side cover 37.
  • the rotating member 192b is attached to the inner surface of the front end portion of the right cover 32. Therefore, the right cover 32 can be rotated around the vertical axis 192a of the hinge 192. Thereby, as shown by the phantom line in FIG. 41, the right cover 32 can be rotated forward and opened.
  • the rear cover 33 can be rotated upward with the first shaft 109A and the second shaft 109B as fulcrums. Thereby, as shown by the phantom line in FIG. 39, the rear cover 33 can be rotated upward to be opened.
  • the front cover 34 is fixed to the first front member 98A, the first rear member 98B, the second front member 99A, the second rear member 99B, and the fastening members B1 to B7. Therefore, by releasing the fastening of the fastening members B1 to B7, the front cover 34 can be removed and opened as shown in FIG.
  • the working machine 1 of the present embodiment can open all of the left cover 31, the right cover 32, the rear cover 33, and the front cover 34 that constitute the cover 30.
  • the four directions (left side, right side, rear side, and upper side) of the engine room ER can be opened. Therefore, access to various devices (engine 10, hydraulic pump 11, radiator 14, battery 17, etc.) mounted in engine room ER is facilitated, and maintenance is improved.
  • the front cover 34 can be opened, it is possible to access the front part of the engine room ER, which has been difficult in the past. That is, as shown in FIG. 14, by opening (removing) the front cover 34, the space S1 between the right end portion of the first rear member 98B and the side plate portion 95c of the second connecting portion 95C, or the second front The upper part of the space S2 between the member 99A and the second rear member 99B is opened. Thereby, it is possible to access the vicinity of the front portion of the engine 10 from above the spaces S1 and S2, and it is possible to perform maintenance of equipment and piping around the front portion of the engine 10.
  • the work machine 1 of the present embodiment can also open the first side cover 36. That is, as indicated by the phantom line in FIG. 42, the first side cover 36 can be opened to the upper left with the hinge 191 attached to the frame 190 fixed to the second support plate 89 as a fulcrum. Accordingly, the side room TR can be opened together with the engine room ER. Therefore, not only equipment mounted in the engine room ER but also equipment mounted in the side room TR (the fuel tank 19, the control valve 20, the hydraulic oil tank 21, etc.) can be easily accessed and maintained. Are better.
  • the first bracket (support bracket) 50 includes a first plate 50A, a second plate 50B, and a third plate 50C.
  • the first plate 50A has a first pivot support 50a that supports one end side (right side) of the first pivot 51.
  • the second plate 50 ⁇ / b> B has a second pivotal support 50 b that supports the other end side (left side) of the first pivot 51.
  • the first pivot 51 is supported between the first pivot 50a and the second pivot 50b.
  • the first plate 50 ⁇ / b> A and the second plate 50 ⁇ / b> B are connected to the outer surface (upper surface and front surface) of the first support plate 88.
  • the third plate 50C connects the first plate 50A and the second plate 50B.
  • the third plate 50 ⁇ / b> C is provided in front of the first support plate 88 and spaced from the first support plate 88.
  • the third plate 50C has a substantially U-shaped edge that forms the notch 50D and an annular edge that forms the third opening 50E.
  • the notch 50 ⁇ / b> D is positioned in front of the first opening 88 a formed in the first support plate 88.
  • the third opening 50 ⁇ / b> E is a long hole that is formed long vertically, and is provided on the right and left sides of the second bracket 55, respectively.
  • the third opening 50E is located in front of the second opening 88b formed in the first support plate 88.
  • a second hydraulic hose 152 and a third hydraulic hose 153, which will be described later, are inserted into the notch 50D.
  • a fourth hydraulic hose 154 described later is inserted through the third opening 50E.
  • the second bracket 55 projects forward from the front surface of the third plate 50 ⁇ / b> C.
  • the second bracket 55 has a first plate 55A and a second plate 55B.
  • the first plate 55A supports one end side (right side) of the fourth pivot 54 (see FIG. 39).
  • the second plate 55B supports the other end side (left side) of the fourth pivot shaft 54.
  • the fourth pivot 54 supported by the second bracket 55 is located in front of and below the first pivot 51 supported by the first bracket 50.
  • One bracket 50 may be integrated with the first vertical rib 61 and the second vertical rib 62.
  • the first plate 50A and the second vertical rib 62 can be formed by a single member
  • the second plate 50B and the first vertical rib 61 can be formed by a single member.
  • the structure which integrates the 1st support plate 88 and the 1st bracket 50 is also employable.
  • the first support plate 88 constitutes a part of the first bracket 50.
  • the first bracket 50 including the first support plate 88), the first vertical rib 61 and the second vertical rib 62 can be integrated (formed by a single member).
  • a step can be provided between the first support plate 88 and the second support plate 89 constituting a part of the support bracket 50.
  • the air conditioner unit 46 is disposed below the driver's seat 6 and above a step 78 (refer to a virtual line in FIG. 19) that constitutes the bottom surface of the cabin 3.
  • the air conditioner unit 46 is located to the left of the first vertical rib 61 and in front of the second partition plate 65.
  • the air conditioner unit 46 constitutes an air conditioner that cools the interior of the cabin 3 together with the condenser 16, the compressor 38 and the receiver 39.
  • a partition wall 60 is provided in front of the engine room ER.
  • the partition wall 60 separates the arrangement space S3 of the cabin 3 from the engine room ER.
  • the partition wall 60 extends in the body width direction from the front of the first partition plate 64 to the front of the second partition plate 65 on the left side of the first vertical rib 61.
  • the partition wall 60 covers the front of the first partition plate 98d.
  • a shroud 13 is attached to the wall plate 100.
  • the shroud 13 includes a wall body 13A having a circular opening and a cylinder 13B provided in the opening.
  • the wall body 13A is disposed behind the rising portion 100A of the wall plate 100 and below the extending portion 100B.
  • a cooling fan 12 is disposed inside the cylinder 13B.
  • the rear upper portion of the wall body 13 ⁇ / b> A is curved in a substantially arc shape. This curvature generally corresponds to the curvature of the inner surface of the rear cover 33.
  • the hose insertion part 13a is provided in the rear upper part of the wall 13A. As shown in FIGS. 17 to 19 and 22, the first hose 141 and the second hose 142 are inserted through the hose insertion portion 13a.
  • the first hose 141 connects the compressor 38 and the air conditioner unit 46.
  • the second hose 142 connects the compressor 38 and the capacitor 16.
  • illustration of a hose is abbreviate
  • the intake chamber R1 shown in FIG. 17 and the like is a space into which cool air (outside air) used for heat exchange of the radiator 14 is taken.
  • the intake chamber R1 is surrounded by the first partition plate 98d, the wall plate 100, the shroud 13, the left cover 31, the rear cover 33, and the front cover 34. That is, the left space in the engine room ER is the intake chamber R1.
  • the engine room ER is partitioned by a wall plate 100 and a shroud 13 into a space in which the engine 10 is disposed (hereinafter referred to as a drive source chamber R2) and an intake chamber R1. It has been. Note that the engine 10 is not shown in FIGS. 17 and 20.
  • the radiator 14, the oil cooler 15, the condenser 16, the receiver (liquid receiver) 39, the air cleaner 80, and the battery 17 are arranged in the intake chamber R1. .
  • the air cleaner 80 is not shown in FIGS. In FIGS. 12 and 17 to 19, the illustration of the battery 17 is omitted.
  • the receiver 39 is arranged on the left side of the radiator 14 and behind the oil cooler 15 and the condenser 16.
  • the capacitor 16 and the receiver 39 are connected by a third hose 143.
  • the receiver 39 and the air conditioner unit 46 are connected by a fourth hose 144.
  • the air cleaner 80 is disposed vertically in front of the oil cooler 15 and the condenser 16.
  • An intake pipe 80 ⁇ / b> A of the air cleaner 80 is disposed on the left side of the oil cooler 15 and the condenser 16.
  • the exhaust pipe 80 ⁇ / b> B of the air cleaner 80 passes through the front upper portion of the wall plate 100 and is connected to the intake manifold of the engine 10 in the drive source chamber R ⁇ b> 2.
  • the radiator 14 is disposed on the left side of the shroud 13.
  • the air intake surface of the radiator 14 is directed to the left (the side opposite to the shroud 13 and the cooling fan 12).
  • a bracket 111 is attached to the extending portion 100 ⁇ / b> B of the wall plate 100.
  • the radiator 14 is fixed to the bracket 111. That is, the radiator 14 is fixed to the wall plate 100 via the bracket 111. Thereby, the radiator 14 can be reliably positioned and fixed.
  • a shroud 13 that surrounds the cooling fan 12 is disposed on one side (right side) of the radiator 14.
  • an air inlet 31 a of the left cover 31 is provided on the other side (left side) of the radiator 14.
  • a guide plate 110 is provided on the other side (left side) of the radiator 14.
  • the guide plate 110 is attached to the bracket 111 and extends toward the other side (left side) of the radiator 14 (a direction away from the radiator 14).
  • the guide plate 110 includes an upper plate 110A and a side plate 110B.
  • the upper plate 110 ⁇ / b> A is disposed on the other side (left side) of the radiator 14.
  • the upper plate 110 ⁇ / b> A is disposed on the left side of the upper portion (upper edge) of the radiator 14.
  • the upper plate 110A extends in the front-rear direction along the upper portion (upper edge) on the left side of the upper portion (upper edge) of the radiator 14.
  • An upper edge of the upper plate portion 110A (an upper edge of a bent portion 110a described later) is located at substantially the same height as the upper edge of the radiator 14.
  • the upper and lower surfaces of the upper plate 110 ⁇ / b> A are arranged in a direction substantially perpendicular to the intake surface of the radiator 14.
  • the side plate 110B has one side end of the upper plate 110A (one end in the direction along the upper edge of the upper plate 110A, in this embodiment, the front end. Part).
  • the side plate 110 ⁇ / b> B is disposed on the left side of the front edge of the radiator 14.
  • the side plate 110 ⁇ / b> B extends in the vertical direction along the front edge on the left side of the front edge of the radiator 14.
  • the front-rear position of the front edge of the side plate 110B is substantially the same as the front-rear position of the front edge of the radiator 14.
  • the front surface and the rear surface of the side plate 110 ⁇ / b> B are arranged in a direction substantially perpendicular to the intake surface of the radiator 14.
  • a mounting frame 110C is fixed to the inner surface (rear surface) of the side plate 110B.
  • the mounting frame 110C has a first vertical frame 110d, a second vertical frame 110e, and a horizontal frame 110f.
  • the first vertical frame 110d extends vertically along the inner surface of the side plate 110B.
  • the horizontal frame 110f extends rearward from the lower end of the first vertical frame 110d.
  • the second vertical frame 110f extends upward from the rear end of the horizontal frame 110f.
  • the oil cooler 15, the condenser 16, and the receiver 39 are disposed below the upper plate 110A and behind the side plate 110B.
  • the oil cooler 15 and the condenser 16 are fixed to the first vertical frame 110d of the mounting frame 110C.
  • the receiver 39 is fixed to the second vertical frame 110f of the mounting frame 110C.
  • the working machine 1 according to the present embodiment is provided with the guide plate 110 (the upper plate 110A and the side plate 110B) having the above-described shape, so that the outside air (cold air) introduced into the intake chamber R1 from the intake port 31a can be obtained.
  • the upper plate 110A and the side plate 110B can guide and guide to the radiator 14. Therefore, the outside air is efficiently guided to the intake surface of the radiator 14, and the cooling efficiency of the radiator 14 can be improved.
  • the upper plate 110A has a bent portion 110a at the end (left end) extending to the other (left side).
  • the bent portion 110a is bent upward and to the left (left obliquely upward) from the left end portion of the upper plate portion 110A.
  • the upper edge of the bent portion 110 a is located above the upper edge of the intake port 31 a of the left cover 31.
  • the height of the upper edge of the bent portion 110a is represented by reference numeral H1
  • the height of the upper edge of the intake port 31a of the left cover 31 is represented by reference numeral H2.
  • the outside air introduced from the vicinity of the upper portion of the intake port 31 a hits the bent portion 110 a and moves obliquely downward, toward the radiator 14. Therefore, it is possible to guide the outside air introduced from the intake port 31a to the radiator 14 more efficiently.
  • the side plate 110 ⁇ / b> B is provided only in front of the radiator 14, and is not provided behind the radiator 14. Therefore, the flow of outside air taken into the engine room ER from the left rear side of the airframe 2 through the intake port 31a is not hindered by the side plate 110B.
  • the upper plate 110A has a notch 110b.
  • the notch 110b is provided at a corner formed by the other side end (rear end) of the upper plate 110A and the end (left end) extending to the other (left side).
  • the fourth hose 144 connecting the receiver 39 and the air conditioner unit 46 is routed to the upper surface of the upper plate 110A through the notch 110b.
  • a guide portion 110g is provided on the upper surface of the upper plate 110A. As shown in FIGS. 17 and 19, the guide portion 110 g guides the first hose 141, the third hose 143, and the fourth hose 144 from the rear to the front.
  • the guide portion 110g is formed of an L-shaped metal fitting, extends upward from the upper surface of the upper plate 110A, then bends and extends to the right.
  • a first hose 141, a third hose 143, and a fourth hose 144 are disposed between the guide portion 110g and the upper plate portion 110A. Since the right side of the guide portion 110g is open, the first hose 141, the third hose 143, and the fourth hose 144 can be inserted and arranged from the right side.
  • the first hose 141 enters the intake chamber R1 from the compressor 38 in the drive source chamber R2 through the hose insertion portion 13a and then bends forward in the intake chamber R1 to guide the guide plate 110.
  • the upper plate 110A extends from the rear to the front along the upper surface of the upper plate 110A on the outer side (upward) of the upper plate 110A.
  • the first hose 141 is bent downward after passing the front end of the upper plate 110A and along the front surface of the side plate 110B outside (front) the side plate 110B. Extending downward. Further, the first hose 141 extends below the side plate 110B and then bends forward, exits the intake chamber R1 through the opening 65a of the second partition plate 65, and enters the cabin arrangement space S3.
  • the air conditioner unit 46 is connected.
  • the second hose 142 enters the intake chamber R1 from the compressor 38 in the drive source chamber R2 through the hose insertion portion 13a. Further, as shown in FIGS. 18 and 19, the second hose 142 bends forward in the intake chamber R ⁇ b> 1 and extends from the rear to the front through the lower part of the upper plate 110 ⁇ / b> A of the guide plate 110. It is connected. As shown in FIGS. 17 to 19, the third hose 143 extends upward from the receiver 39 and then bends forward. The third hose 143 is formed on the upper surface of the upper plate 110A outside (upper) the upper plate 110A of the guide plate 110.
  • the third hose 143 extends below the side plate 110 ⁇ / b> B and then bends backward to be connected to the capacitor 16.
  • the fourth hose 144 extends upward from the receiver 39 and then bends forward.
  • the fourth hose 144 is placed on the upper surface of the upper plate 110A outside (upper) the upper plate 110A of the guide plate 110. After extending from the rear to the front along, it bends downward and extends downward along the front surface of the side plate 110B on the outside (front) of the side plate 110B. Further, the fourth hose 144 extends below the side plate 110B and then bends forward, exits the intake chamber R1 through the opening 65a of the second partition plate 65, and enters the cabin arrangement space S3.
  • the air conditioner unit 46 is connected.
  • the first hose 141, the third hose 143, and the fourth hose 144 are disposed along the outer surface of the outer surface of the guide plate 110 (the upper surface of the upper plate 110A and the front surface of the side plate 110B). ing. Accordingly, the first hose 141, the third hose 143, and the fourth hose 144 do not hinder the intake of the radiator 14, and the cooling efficiency can be improved.
  • first hose 141, the third hose 143, and the fourth hose 144 are guided along the outer surface (upper surface) of the upper plate 110A by the guide portion 110g provided on the upper plate 110A. Therefore, the first hose 141, the third hose 143, and the fourth hose 144 are reliably arranged along the outer surface (upper surface) of the upper plate 110A. Thereby, it can avoid that the 1st hose 141, the 3rd hose 143, and the 4th hose 144 fall from the upper surface of the upper board 110A, and block the intake of the radiator 14.
  • the guide plate 110 of the present embodiment has the upper plate 110A, but does not have the lower plate arranged on the left side of the lower portion (lower edge) of the radiator 14. Even if the lower plate is provided, the lower plate portion hardly contributes to the arrangement of the hose for hindering the intake of the radiator 14.
  • a clamp tool 125 is provided at a position corresponding to the opening 65 a of the second partition plate 65.
  • the clamp tool 125 includes a holding member 126 and a pressing member 127.
  • FIG. 24 shows the clamp tool 125 with the pressing member 127 omitted
  • FIG. 25 shows a view of the clamp tool 125 from the opposite side of FIGS. 23 and 24 (from the front of the second partition plate 65). Yes.
  • the holding member 126 is made of an elastically deformable material such as rubber and has an insertion portion 128 formed of a circular hole into which the hose is inserted.
  • the inner diameter of the insertion portion 128 is larger than the outer diameter of the hose to be inserted before being elastically deformed, and is reduced below the outer diameter of the hose by elastic deformation.
  • the number of insertion portions 128 is set according to the number of hoses that pass through the opening 65a. In this embodiment, since there are four hoses that allow the opening 65a to pass therethrough, the number of insertion portions 128 is four.
  • the four insertion portions 128 are referred to as a first insertion portion 128A, a second insertion portion 128B, a third insertion portion 128C, and a fourth insertion portion 128D in order from the left side.
  • the 4th hose 144 which connects the receiver 39 and the air-conditioner unit 46 is inserted in the 1st insertion part 128A.
  • a first hose 141 that connects the compressor 38 and the air conditioner unit 46 is inserted into the second insertion portion 128B.
  • a fifth hose 145 that connects the oil cooler 15 and the control valve 20 is inserted into the third insertion portion 128C.
  • a sixth hose 146 that connects the oil cooler 15 and the fuel filter 22 is inserted into the fourth insertion portion 128D.
  • the hoses inserted into the insertion portion 128 may be collectively referred to as “first hose 141 etc.”.
  • the holding member 126 is composed of two members, a first holding member 129 and a second holding member 130.
  • the first holding member 129 has a first recess 128 a that forms one side (upper side) of the insertion portion 128.
  • the second holding member 130 has a second recess 128 b that forms the other side (lower side) of the insertion portion 128.
  • the number of first recesses 128 a and the number of second recesses 128 b are the same as the number of insertion portions 128.
  • the first holding member 129 has a substantially rectangular parallelepiped shape, and has an upper surface 129a, a lower surface 129b, a rear surface 129c, a front surface 129c, a right surface 129e, and a left surface 129f.
  • the first recess 128a is formed by notching a semicircular shape with the lower surface 129b facing upward.
  • the first holding member 129 has a through hole 129g penetrating from the rear surface 129c toward the front surface 129c.
  • the through holes 129g are formed in the left part and the right part of the first holding member 129, respectively.
  • the four first recesses 128a are provided between the left through hole 129g and the right through hole 129g.
  • the second holding member 130 has the same shape as the first holding member 129, and is arranged upside down with respect to the first holding member 129.
  • the second holding member 130 has an upper surface 130a, a lower surface 130b, a rear surface 130c, a front surface 130d, a right surface 130e, and a left surface 130f.
  • the second recess 128b is formed by notching a semicircular shape with the upper surface 130a facing downward.
  • the second holding member 130 has a through hole 130g penetrating from the rear surface 130c toward the front surface 130d.
  • the through holes 130g are formed in the left part and the right part of the second holding member 130, respectively.
  • the four second recesses 128b are provided between the left through hole 130g and the right through hole 130g.
  • the lower surface 129b of the first holding member 129 and the upper surface 130a of the second holding member 130 are disposed in contact with or in proximity to each other.
  • the first recess 128a and the second recess 128b are combined to form a circular insertion portion 128.
  • the outer shape of the holding member 126 is slightly larger than the opening 65 a of the second partition plate 65 in a state where the first holding member 129 and the second holding member 130 are in contact with each other. Therefore, the front surface 129c of the first holding member 129 and the front surface 130d of the second holding member 130 are in contact with the periphery of the opening 65a beyond the range of the opening 65a of the second partition plate 65.
  • the pressing member 127 is a member that pushes the holding member 126 in the insertion direction of the first hose 141 to the insertion portion 128 and elastically deforms it.
  • the pressing member 127 is formed from an inelastic member such as metal.
  • the pressing member 127 includes two members, a first pressing member 134 and a second pressing member 135.
  • the first pressing member 134 is a member for elastically deforming the first holding member 129.
  • the second pressing member 135 is a member for elastically deforming the second holding member 130.
  • the first pressing member 134 and the second pressing member 135 have the same shape, and the second pressing member 135 is disposed upside down with respect to the first pressing member 134.
  • the width of the pressing member 127 (the first pressing member 134 and the second pressing member 135) (the length in the machine body width direction) is the width of the holding member 126 (the first holding member 129 and the second holding member 130) (the body width direction). Is substantially the same as the length of
  • the pressing member 127 (the first pressing member 134 and the second pressing member 135) includes a pressing plate 131, a fastening member 132, and a restricting portion 133.
  • the pressing plate 131 is provided in contact with the outer surface of the holding member 126 that intersects the insertion direction (rear surface 129c, rear surface 130c).
  • the pressing plate 131 has a horizontal part 131a and a vertical part 131b.
  • the lateral portion 131 a extends in the body width direction along the upper edge of the first holding member 129 and the lower edge of the second holding member 130 so as not to cover the insertion portion 128.
  • the vertical portion 131b extends upward or downward (downward in the first pressing member 134 and upward in the second pressing member) from both end portions of the horizontal portion 131a in the body width direction.
  • a through hole 131c is formed in the vertical portion 131b.
  • the through hole 131c is disposed at a position overlapping the through hole 129g and the through hole 130g of the holding member 126.
  • the regulating part 133 is formed integrally with the pressing plate 131.
  • the restricting portion 133 is bent from the upper end portion of the pressing plate 131 and extends forward, and is in contact with the upper surface 129 a of the first holding member 129. Thereby, the restricting part 133 restricts the deformation of the first holding member 129 outward (upward).
  • the restricting portion 133 is bent from the lower end portion of the pressing plate 131 and extends forward, and is in contact with the lower surface 130 a of the second holding member 130. As a result, the restricting portion 133 restricts the second holding member 130 from being deformed outward (downward).
  • the length of the restricting portion 133 extending forward is slightly smaller than the thickness of the holding member 126 before elastic deformation.
  • the holding member 126 is elastically deformed in the thickness direction (front-rear direction) by a difference D8 (see FIG. 23) between the extension length of the restricting portion 133 and the thickness of the holding member 126 before elastic deformation (the thickness is small). Deformation) is allowed.
  • the fastening member 132 pushes the pressing plate 131 in the insertion direction of the first hose 141 and the like by fastening.
  • a bolt is used as the fastening member 132.
  • the fastening member 132 is inserted through the through hole 129g and the through hole 130g. Therefore, the number of the fastening members 132 is the same as the total number of the through holes 129g and the through holes 130g, and four bolts are used as the fastening members 132 in this embodiment.
  • four screw holes 65b capable of fastening a bolt as the fastening member 132 are formed.
  • a cylindrical boss 136 is fitted into the through hole 129g and the through hole 130g.
  • the boss 136 is formed of an inelastic member such as metal.
  • the length of the boss 136 (length in the cylinder axis direction) is formed smaller than the thickness of the holding member 126 before elastic deformation.
  • the boss 136 functions as a regulating member 136 that regulates the tightening amount by the fastening member 132 to a certain amount or less.
  • the restricting member (boss) 136 restricts deformation of the holding member 126 in the insertion direction of the first hose 141 (deformation in the thickness direction) to a certain amount or less. That is, the difference D9 (see FIG. 24) between the thickness of the holding member 126 before elastic deformation and the length of the boss 136 is the maximum deformation amount (deformation allowance) in the thickness direction of the holding member 126.
  • the clamp tool 125 is attached at a position corresponding to the opening 65 a of the second partition plate 65.
  • the clamp tool 125 is attached by placing the through hole 129g and the through hole 130g of the holding member 126, the through hole 131c of the pressing plate 131, and the screw hole 65b of the second partition plate 65 in an overlapping manner, and fastening to the overlapping holes. This is done by inserting the member 132 and fastening it to the screw hole 65b.
  • the insertion portion 128 communicates with the opening 65a.
  • the first hose 141 and the like inserted into the insertion portion 128 passes through the opening 65a and reaches from the rear to the front of the second partition plate 65.
  • the holding member 126 In the initial state in which the clamp tool 125 is attached to the second partition plate 65, the holding member 126 is not elastically deformed. Therefore, the inner diameter of the insertion portion 128 is slightly larger than the outer diameter of the first hose 141 and the like.
  • the fastening member 132 is tightened after the first hose 141 or the like is inserted into the insertion portion 128.
  • the holding member 126 is pressed between the second partition plate 65 by the pressing plate 131 and is elastically deformed.
  • the holding member 126 Since the upward and downward deformation of the holding member 126 is restricted by the restricting portion 133, the holding member 126 is deformed inward (in the direction of reducing the outer diameter of the insertion portion 128).
  • the holding member 126 When the holding member 126 is deformed inward, the first hose 141 and the like inserted into the insertion portion 128 are tightened. Thereby, the first hose 141 and the like are held by the clamp tool 125.
  • the pressing member 127 pushes the holding member 126 in the insertion direction of the first hose 141 and the like, and the first hose 141 and the like are fastened and held by this deformation.
  • the deformation direction of the holding member 126 (the tightening direction of the hose) is a direction orthogonal to the insertion direction of the first hose 141 and the tightening direction of the fastening member 132. That is, the insertion direction of the first hose 141 and the like and the fastening direction of the fastening member 132 are the same.
  • the insertion direction of the first hose 141 and the fastening direction of the fastening member are different from the fastening direction of the first hose 141 and the like by 90 degrees. Therefore, when the fastening member 132 is tightened, the holding member 126 is attached in close contact with the second partition plate 65, and the first hose 141 and the like are tightened by the holding member 126.
  • the clamp tool 125 of the present embodiment the operation of attaching the holding member 126 in close contact with the second partition plate 65 and the operation of fastening and holding the first hose 141 and the like by the holding member 126 are performed by the fastening member. It is possible to carry out by one operation of tightening 132.
  • the clamp tool 125 has a function as a clamp tool for holding the first hose 141 and the like, and a function as a partition material for partitioning the first hose 141 and the like through the opening 65a of the second partition plate 65. Can have both. Therefore, it is not necessary to prepare a clamp tool and a partition material separately, and the number of parts can be reduced.
  • the holding member 126 is brought into close contact with the second partition plate 65, so that a good sealing property can be obtained. Furthermore, the provision of the regulating member (boss) 136 prevents the fastening member 132 from overtightening the holding member 126.
  • the holding member 126 includes the first holding member 126A and the second holding member 126B, the operation of inserting the hose into the insertion portion 128 is performed by the first recess 128a and the second holding member of the first holding member 126A. This can be done by sandwiching the second recess 128b of 126B. Therefore, even when the hose is long, the operation of inserting the hose into the insertion portion 128 can be easily performed.
  • the holding member 126 may be configured by a single member in which the first holding member 126A and the second holding member 126B are integrated.
  • the pressing member 127 may be constituted by a single member in which the first pressing member 134 and the second pressing member 135 are integrated.
  • the restricting portion 133 may be configured to be in contact with the right surfaces 129e and 130e and the left surfaces 129f and 130f of the holding member 126 so as to restrict the deformation of the holding member 126 to the side (right and left). .
  • the holding member 126 can be reliably deformed only inward (in the direction of reducing the outer diameter of the insertion portion 128).
  • a fixed plate material (not shown) that can be fastened to the fastening member 132 and provided on the opposite side of the pressing plate 131 is used. Then, the fixed plate material may be fixed at a position corresponding to the opening 65 a of the second partition plate 65.
  • the first hose 141 and the like inserted into the insertion portion 128 of the clamp tool 125 pass through the opening 65 a of the second partition plate 65 and from the front to the rear of the second partition plate 65. It is extended to. Accordingly, the first hose 141 and the like extend from the intake chamber R1 of the engine room ER to the cabin arrangement space S3.
  • the four hoses that have passed through the opening 65 a of the second partition plate 65 are connected to various devices arranged in front of the second partition plate 65. Specifically, the first hose 141 connected to the compressor 38 is connected to the air conditioner unit 46.
  • the fourth hose 144 connected to the receiver 39 is connected to the air conditioner unit 46.
  • the fifth hose 145 connected to the oil cooler 15 is connected to the control valve 20.
  • the sixth hose 146 connected to the oil cooler 15 is connected to the fuel filter 22.
  • ⁇ Control valve> As shown in FIGS. 16, 26, and 41, the control valve 20 is disposed in front of the hydraulic oil tank 21 and above the rear portion of the fuel tank 19. A receiving plate 40 is provided above the rear portion of the fuel tank 19. The control valve 20 is placed horizontally on the upper surface of the receiving plate 40.
  • the plurality of control valves constituting the control valve 20 are arranged in a direction (front-rear direction) orthogonal to the longitudinal direction (spool operating direction).
  • a block-shaped valve body 20A is disposed at the rear of the control valve 20.
  • the valve body 20A is provided with an arm control valve that controls the arm cylinder 48, a work tool control valve that controls the work tool cylinder 48, a boom control valve that controls the boom cylinder 47, an inlet portion, and the like.
  • At the front of the control valve 20 there are a dozer control valve that controls the dozer cylinder that drives the dozer 26, a swing control valve that controls the swing motor 112, a travel control valve that controls the travel motor of the travel device 4, and the like. Is provided. Note that the number, type, and arrangement of the control valves constituting the control valve 20 can be changed according to the specifications of the work machine 1.
  • a first hydraulic hose 151, a second hydraulic hose 152, a third hydraulic hose 153, and a fourth hydraulic hose 154 are connected to the valve body 20A.
  • a first hydraulic hose 151 is connected to the inlet portion. As shown in FIG. 26, the first hydraulic hose 151 is connected to the hydraulic pump 11 via a connector 170 described later.
  • a second hydraulic hose 152 is connected to the arm control valve. The second hydraulic hose 152 is connected to the arm cylinder 48.
  • a third hydraulic hose 153 is connected to the work implement control valve. The third hydraulic hose 153 is connected to the work tool cylinder 48.
  • a fourth hydraulic hose 154 is connected to the boom control valve. The fourth hydraulic hose 154 is connected to the boom cylinder 47.
  • a fifth hydraulic hose 155, a sixth hydraulic hose 156, and a seventh hydraulic hose 157 are connected to the control valve located behind the valve body 20A.
  • a fifth hydraulic hose 155 is connected to the dozer control valve.
  • the fifth hydraulic hose 155 is connected to the dozer cylinder via a rotary joint 79 described later.
  • a sixth hydraulic hose 156 is connected to the traveling control valve.
  • the sixth hydraulic hose 156 is connected to the traveling motor via the rotary joint 79.
  • a seventh hydraulic hose 157 is connected to the turning control valve.
  • the seventh hydraulic hose 157 is connected to the turning motor 112. 16 and 26, the fifth hydraulic hose 155, the sixth hydraulic hose 156, and the seventh hydraulic hose 157 are omitted for convenience of illustration.
  • Hose from hydraulic pump to control valve> The control valve 20 receives the hydraulic oil sucked from the hydraulic oil tank 21 by the hydraulic pump 11 via the first hydraulic hose 151, and controls the supply of the hydraulic oil to various hydraulic actuators
  • the hydraulic pump 11 is arranged behind the first partition plate 64 and to the left of the second vertical rib 62. As shown in FIG.
  • the control valve 20 is disposed in front of the first partition plate 64 and to the right of the second vertical rib 62.
  • the hydraulic pump 11 and the control valve 20 are partitioned by the first partition plate 64 and the second vertical rib 62.
  • the hydraulic pump 11 and the control valve 20 are connected by a first hydraulic hose 151.
  • the first hydraulic hose 151 includes a pump side hose (first hose) 151A and a valve side hose (second hose) 151B.
  • the pump-side hose 151A and the valve-side hose 151B are connected via a connector 170.
  • the connection tool 170 includes a mounting plate 170 ⁇ / b> A and a connection pipe 170 ⁇ / b> B.
  • the mounting plate 170A is made of a rigid material (non-elastic material) such as metal.
  • the mounting plate 170A is fixed to the rear surface of the high plate portion 64b of the first partition plate 64.
  • the mounting plate 170A is fixed by a fastening member (bolt) 171 at a position corresponding to the opening 64d (see FIGS. 2 and 3) formed in the high plate portion 64b.
  • the mounting plate 170A has a through hole (not shown), and a connecting pipe 170B is attached in close contact with the through hole.
  • the connecting pipe 170B passes through the through hole of the mounting plate 170A and the opening 64d of the first partition plate 64. Accordingly, as shown in FIG. 15, one end (rear end) of the connection pipe 170B is disposed behind the first partition plate 64, and the other end (front end) of the connection pipe 170B is disposed on the first partition plate 64. Is placed in front of.
  • a pump-side hose (first hose) 151A is connected to one end of the connection pipe 170B.
  • a valve-side hose (second hose) 151B is connected to the other end of the connection pipe 170B.
  • the pump side hose 151 ⁇ / b> A is bent leftward from the hydraulic pump 11 and attached to the first partition plate 64. Connected to the connecting tool 170.
  • the valve side hose 151 ⁇ / b> B is bent to the right from the connector 170 and connected to the control valve 20.
  • the first hydraulic hose 151 (pump-side hose 151A and valve-side hose 151B) is bent into a substantially U shape that protrudes to the left in plan view, and connects the hydraulic pump 11 and the control valve 20. ing.
  • the first hydraulic hose 151 is composed of a single hose, the first hydraulic hose 151 as a whole is largely bent into a substantially U shape.
  • the first hydraulic hose 151 is configured by two hoses of the pump side hose 151A and the valve side hose 151B, thereby reducing the bending of each hose. That is, the bending of the pump side hose 151A and the bending of the valve side hose 151B are both small.
  • the hydraulic pump 11 and the control valve 20 are provided on the same side (right side) in the machine body width direction. As a result, the distance between the hydraulic pump 11 and the control valve 20 is reduced. Therefore, the hydraulic hose (first hydraulic hose 151) that connects the hydraulic pump 11 and the control valve 20 can be shortened. As a result, it is possible to reduce the pressure loss of the hydraulic oil flowing through the first hydraulic hose 151. Further, since the first hydraulic hose 151 is shortened, the movement due to the pulsation of the first hydraulic hose 151 is reduced, and it is difficult to make contact with other devices.
  • connection tool 170 is connected between the hydraulic pump 11 and the control valve 20, and the pump machine hose 151A and the valve side hose 151B are configured as the first.
  • One hydraulic hose 151 connects the hydraulic pump 11 and the control valve 20. That is, the bending of the first hydraulic hose 151 can be reduced as much as possible by interposing the connector 170 between the pump side hose 151A and the valve side hose 151B. That is, compared with the case where the hydraulic pump 11 and the control valve 20 are connected by a single hydraulic hose, the bending size of the pump side hose 151A and the bending size of the valve side hose 151B can be reduced. The restoring force acting on the hose can be reduced.
  • connection tool 170 having the attachment plate 170A and the connection pipe 170B is used, and the connection tool 170 is attached to the first partition plate 64 by the attachment plate 170A. Therefore, after the mounting plate 170A is closely fixed to the first partition plate 64, a hydraulic hose is connected to the connection pipe 170B, thereby preventing a gap from being generated in the passage portion of the first partition plate 64 through the hydraulic hose. be able to. Therefore, the shielding property of the engine room ER can be improved.
  • connection tool 170 is fixed to the first partition plate 64. Specifically, it is fixed to the upper part of the high plate part 64b. Therefore, the connecting tool 170 can be easily accessed by removing the rear cover 33. Therefore, the first hydraulic hose 151 can be easily replaced.
  • Hose clamp between vertical ribs> As shown in FIGS. 16, 26, and 27, the second hydraulic hose 152, the third hydraulic hose 153, and the fourth hydraulic hose 154 extend to the left from the control valve 20.
  • the hydraulic hoses 152, 153, and 154 extending to the left pass through the upper portion 62d of the second vertical rib 62 and enter the vertical rib space S4, and extend forward in the vertical rib space S4.
  • a hose clamp 161 is provided in the vertical rib space S4. Furthermore, as shown in FIGS. 15 and 27, a rotary joint 79 and a turning motor 112 are provided in the vertical rib space S4.
  • the rotary joint 79 is provided behind the first pivot 51.
  • the hose clamp 161 is provided behind the first pivot 51 and in front of the rotational axis of the rotary joint 79 (coincident with the pivot axis X).
  • the turning motor 112 is provided behind the hose clamp 161. 16, 26, and 28, illustration of the rotary joint 79 and the turning motor 112 is omitted.
  • the rotary joint 79 connects a hydraulic hose above the swivel board 8 and a hydraulic hose below the swivel board 8 in order to supply hydraulic oil from the top to the bottom of the swivel board 8.
  • the rotary joint 79 includes an outer sleeve 79A and an inner shaft 79B.
  • the outer sleeve 79 ⁇ / b> A has a substantially cylindrical shape and is fixed at a position corresponding to the opening formed by the fifth edge 85 of the revolving substrate 8.
  • a hydraulic hose (not shown) for supplying hydraulic oil to the dozer cylinder and a hydraulic hose (not shown) for supplying hydraulic oil to the traveling motor are connected to the outer sleeve 79A below the turning board 8.
  • the inner shaft 79B is rotatably inserted into the outer sleeve 79B and protrudes on the turning substrate 8.
  • a plurality of oil passages are formed inside the rotary joint 79.
  • the fifth hydraulic hose 155 and the sixth hydraulic hose 156 extend to the left from the control valve 20.
  • the fifth hydraulic hose 155 is a hose connected to the control valve for the dozer of the control valve 20.
  • the sixth hydraulic hose 156 is a hose connected to the traveling control valve of the control valve 20.
  • the fifth hydraulic hose 155 and the sixth hydraulic hose 156 extending to the left pass into the vertical rib space S4 through the upper part of the intermediate portion 62d of the second vertical rib 62.
  • the fifth hydraulic hose 155 and the sixth hydraulic hose 156 are connected to the inner shaft 79B of the rotary joint 79 in the vertical rib space S4. In FIG. 27, a part of the fifth hydraulic hose 156 and the sixth hydraulic hose 156 is omitted.
  • the second hydraulic hose 152, the third hydraulic hose 153, and the fourth hydraulic hose 154 extend forward in the vertical rib space S4 and reach the hose clamp 161.
  • the hose clamp 161 includes a lower plate 161A, a right leg portion 161B, a left leg portion 161C, a top plate 161D, a connecting portion 161E, a holding portion 161F, and a guide portion 161M.
  • the lower plate 161 ⁇ / b> A is fixed to the upper surface of the turning substrate 8 with a fastening member (bolt) 162.
  • the right leg portion 161B is erected on the right side of the upper surface of the lower plate 161A.
  • the left leg portion 161C is erected on the upper left portion of the lower plate 161A.
  • the top plate 161D connects the upper part of the right leg part 161B and the upper part of the left leg part 161C.
  • the connecting portion 161E connects the right leg portion 161B and the left leg portion 161C below the top plate 161D and above the lower plate 161A.
  • the holding part 161F is provided between the upper part of the right leg part 161B and the upper part of the left leg part 161C.
  • the guide part 161M is a substantially U-shaped metal fitting, and is attached to the front part of the right leg part 161B and the front part of the left leg part 161C, respectively.
  • the holding part 161F has a lower plate 161G, an upper plate 161H, an upper holding member 161I, a lower holding member 161J, and a fastening member 161L.
  • the lower plate 161G is fixed to the upper surface of the top plate 161D with bolts.
  • the upper holding member 161I and the lower holding member 161J are formed of an elastic member such as rubber.
  • the upper holding member 161I has a semicircular cutout on the lower surface, and the lower holding member 161J has a semicircular cutout on the upper surface.
  • the circular insertion portion 161K through which the hose is inserted is formed by arranging the notch of the upper holding member 161I in the upper portion and the notch of the lower holding member 161J in the lower portion.
  • the number of insertion parts 161K is set according to the number of hoses held by the hose clamp 161. In the present embodiment, since four hoses are held by the hose clamp 161, four insertion portions 161K are formed.
  • the upper plate 161H is disposed above the upper holding member 161I
  • the lower plate 161G is disposed below the lower holding member 161J. That is, the upper plate 161H and the lower plate 161G sandwich the upper holding member 161I and the lower holding member 161J from above and below.
  • the fastening member 161L passes through the upper plate 161H, the lower plate 161G, the upper holding member 161I, and the lower holding member 161J, and is fastened to a fastened portion (female screw) formed on the top plate 161D.
  • a fastened portion female screw
  • one hydraulic hose (second hydraulic hose 152 and third hydraulic hose 153) is inserted and held in the insertion portion 161K from the front to the rear.
  • another hydraulic hose (fourth hydraulic hose 154) is provided in a space surrounded by the top plate 161D, the right leg portion 161B, the left leg portion 161C, and the connecting portion 161E (referred to as an enclosed space S5). Is inserted from the front to the rear.
  • the second hydraulic hose 152 and the third hydraulic hose 153 extend from the insertion portion 161 ⁇ / b> K to the front and then bend upward to form a first opening formed in the upper portion of the first support plate 88. It passes through the notch 50D formed in the portion 88a and the first bracket 50.
  • the second hydraulic hose 152 and the third hydraulic hose 153 that have passed through the first opening 88a and the notch 50D are extended forward and upward, and pass above the first pivot 51 to the outside of the body 2. It has been taken out.
  • the second hydraulic hose 152 taken out of the body 2 is connected to a first pipe 58 attached to the upper surface of the boom 27.
  • the first pipe 58 is connected to the arm cylinder 48.
  • the third hydraulic hose 153 taken out of the machine body is connected to a second pipe 59 attached to the upper surface of the boom 27.
  • the second pipe 59 is connected to the work tool cylinder 48.
  • the first pipe 58 and the second pipe 59 are made of metal pipes.
  • the fourth hydraulic hose 154 extends forward through the enclosed space S ⁇ b> 5 of the hose clamp 161, and then the second opening formed in the lower portion of the first support plate 88. 88b and the third opening 50E formed in the third plate 50C of the first bracket 50.
  • the fourth hydraulic hose 154 that has passed through the third opening 50 ⁇ / b> E passes below the first pivot 51 and to the side of the fourth pivot 54 and is taken out of the body 2. ing.
  • the fourth hydraulic hose 154 taken out of the body 2 is connected to the boom cylinder 47.
  • the second hydraulic hose 152 and the third hydraulic hose 153 pass above the first pivot 51 and are taken out of the body 2. Therefore, even if the first pivot 51 that pivotally supports the base end of the boom 27 is moved downward, the second hydraulic hose 152 and the third hydraulic hose 153 are not hindered from being taken out of the body 2. Therefore, in the working machine of the present embodiment, it is possible to position the first pivot 51 below the conventional working machine (for example, see FIG. 5 of JP-A-2005-344301). Specifically, in the working machine 1 of the present embodiment, as shown in FIG. 42, the height H4 of the first pivot 51 is lower than the height H3 of the upper end portion of the weight 9. Thus, by positioning the first pivot 51 downward, the position of the center of gravity of the work implement 1 can be lowered, and the stability can be improved.
  • the longitudinal distance D1 between the hose clamp 161 and the pivot axis (vertical axis) X is smaller than the longitudinal distance D2 between the hose clamp 161 and the first pivot axis (horizontal axis) 51.
  • the hose clamp 161 is provided forward and to the right of the rotational axis of the rotary joint 79 (coincident with the pivot axis X). That is, the hose clamp 161 is behind the intermediate position before and after the axis of the first pivot (horizontal axis) 51 and the pivot axis (vertical axis) X, and the rotational axis (rotation axis X of the rotary joint 79). It is provided at a predetermined position ahead of (match). The position of the hose clamp 161 is set at the front and rear center of the insertion portion 161K.
  • the hose clamp 161 Since the hose clamp 161 is provided at the predetermined position, the slack of the second hydraulic hose 152 and the third hydraulic hose 153 generated when the boom 27 is swung back is allowed in the vertical rib space S4. (See the virtual line in FIG. 15). Further, the second hydraulic hose 152 and the third hydraulic hose 153 can be prevented from interfering with the rotary joint 79.
  • the holding portion 161 ⁇ / b> F is provided at a position higher than the fourth pivot 54 and lower than the first pivot 51.
  • the holding portion 161 ⁇ / b> F is provided at a position higher than the upper end portion of the rotary joint 79 and lower than the upper end portion of the turning motor 112. Therefore, the second hydraulic hose 152 and the third hydraulic hose 153 are higher than the upper ends of the fourth pivot 54 and the rotary joint 79 and have a predetermined height below the upper ends of the first pivot 51 and the swing motor 112. Is held in.
  • the second hydraulic hose 152 and the second hydraulic hose 152 and the second hydraulic hose 152 and the third hydraulic hose 153 can be allowed to slack in the vertical rib space S4.
  • the third hydraulic hose 153 can be prevented from interfering with the fifth hydraulic hose 155 and the sixth hydraulic hose 156 connected to the rotary joint 79 and the seventh hydraulic hose 157 connected to the turning motor 112.
  • the arm control valve and the work tool control valve are disposed in front of the dozer control valve, the travel control valve, and the turning control valve.
  • the second hydraulic hose 152 connected to the arm control valve and the third hydraulic hose 153 connected to the work tool control valve are extended forward toward the hose clamp 161.
  • the fifth hydraulic hose 155 connected to the dozer control valve and the sixth hydraulic hose 156 connected to the traveling control valve are extended toward the left toward the rotary joint 79.
  • the seventh hydraulic hose 157 connected to the turning control valve extends toward the left toward the turning motor 112. Therefore, as shown in FIG.
  • the second hydraulic hose 152 and the third hydraulic hose 153 heading forward, and the fifth hydraulic hose 156, the sixth hydraulic hose 156, and the seventh hydraulic hose 157 heading left are flat.
  • the holding portion 161F is provided at an appropriate predetermined height that is higher than the fourth pivot 54 and lower than the first pivot 51, so that the second portion generated when the boom 27 is swung rearward.
  • the slack of the second hydraulic hose 152 and the third hydraulic hose 153 can be allowed in the vertical rib space S4. Further, the second hydraulic hose 152 and the third hydraulic hose 153 interfere with the fifth hydraulic hose 156 and the sixth hydraulic hose 156 connected to the rotary joint 79 and the seventh hydraulic hose 157 connected to the turning motor 112. This is also prevented.
  • the guide portion 161M guides a hose (such as a pilot hose 160) routed across the front of the right leg portion 161B and the left leg portion 161C. That is, the pilot hose 160 and the like are supported by the front guide portion 161M of the right leg portion 161B and the front guide portion 161M of the left leg portion 161C, so that the pilot hose 160 and the like are connected to one hydraulic hose (first The second hydraulic hose 152 and the third hydraulic hose 153) and other hydraulic hoses (fourth hydraulic hose 154) can be arranged in a direction orthogonal to each other.
  • ⁇ Engine bracket> As shown in FIGS. 33 and 34, the engine 10 is supported on the turning substrate 8 via an engine support 115.
  • the engine support 115 includes an engine bracket 116 and a mount member 117.
  • the engine bracket 116 supports the front portion of the engine 10.
  • the mount member 117 supports the rear portion of the engine 10.
  • the engine bracket 116 has a mounting portion 118, a vibration isolator 119, and a support leg 120.
  • the attachment portion 118 has a first attachment portion 118A and a second attachment portion 118B.
  • One end side (rear part) of the first attachment part 118A is attached to the right front part (first part) of the engine 10 by a fastening member (bolt).
  • One end side (rear part) of the second attachment part 118B is attached to the left front part (second part) of the engine 10 by a fastening member (bolt).
  • the vibration isolator 119 is attached to the other end side (front part) of the first attachment part 118A and the other end side (front part) of the second attachment part 118B.
  • the anti-vibration material 119 is formed by integrating an elastic body (anti-vibration rubber) and a metal plate or the like.
  • the support leg 120 includes a lower plate 120A, an upper plate 120B, and a connecting portion 120C.
  • the lower plate 120A, the upper plate 120B, and the connecting portion 120C are integrally formed by welding or the like.
  • the lower plate 120A is a flat plate having a rectangular shape in plan view. As shown in FIG. 34, the lower plate 120 ⁇ / b> A is disposed such that the long side direction of the rectangle faces the machine body width direction, and is fixed to the upper surface of the turning substrate 8 by fastening members (bolts) 123. As shown in FIG. 35, the upper plate 120B is provided above the lower plate 120A and extends in the body width direction. The right portion of the upper plate 120B is connected to the other end side (front portion) of the first attachment portion 118A. The left part of the upper plate 120B is connected to the other end side (front part) of the second attachment part 118B.
  • the upper plate 120B connects the other end side (front part) of the first attachment part 118A and the other end side (front part) of the second attachment part 118B.
  • Antivibration members 119 are fixed to the upper surface 120a on the right side and the upper surface 120b on the left side of the upper plate 120B, respectively.
  • the upper plate 120B is inclined such that the right upper surface 120a is higher than the left upper surface 120b.
  • the connecting portion 120C connects the upper plate 120B and the lower plate 120A from one side (left side) to the other side (right side) in the body width direction.
  • the lower portion of the connecting portion 120C is connected to the upper surface of the upper plate 120B.
  • the upper part of the connecting portion 120C is connected to the lower surface of the upper plate 120B.
  • the upper part of the connecting part 120C is inclined downward from the right part toward the left part.
  • the connecting portion 120C has an annular edge portion that forms an opening 120D through which a hydraulic hose can be inserted. Thereby, the hydraulic hose can be routed through the opening 120 ⁇ / b> D of the engine bracket 116. Therefore, the engine bracket 116 does not hinder the arrangement of the hydraulic hose.
  • the mount member 117 that supports the rear portion of the engine 10 includes a first mount member 121 and a second mount member 122.
  • the first mount member 121 and the second mount member 122 are configured as separate members.
  • the first mount member 121 is attached to the right rear portion (third portion) of the engine 10 with a fastening member (bolt).
  • the second mount member 122 is attached to the left rear portion (fourth portion) of the engine 10 by a fastening member (bolt).
  • the first mount member 121 includes a substrate 121A, a mounting piece 121B, and a vibration isolating material 121C.
  • the board 121A is fixed to the upper surface of the first stay 74A erected on the turning board 8 by fastening members (bolts).
  • the attachment piece 121B is attached to the right rear portion (third portion) of the engine 10 by a fastening member (bolt).
  • the anti-vibration material 121C is fixed to the upper part of the substrate 121A.
  • the anti-vibration material 121C has the same structure as the anti-vibration material 119 of the engine bracket 116.
  • the substrate 121A, the mounting piece 121B, and the vibration isolator 121C are integrated.
  • the second mount member 122 includes a substrate 122A, a mounting piece 122B, and a vibration isolator 122C.
  • the substrate 122A is fixed to a second stay 74B erected on the turning substrate 8 by a fastening member (bolt).
  • the attachment piece 122B is attached to the left rear portion (fourth portion) of the engine 10 by a fastening member (bolt).
  • the vibration isolator 122C is fixed to the top of the substrate 122A.
  • the vibration isolator 122C has the same structure as the vibration isolator 119 of the engine bracket 116.
  • the substrate 122A, the mounting piece 122B, and the vibration isolator 122C are integrated.
  • a support structure (referred to as a first support structure) that supports the rear portion of the engine 10 will be described.
  • the rear portion of the engine 10 is supported by a mount member 117 (first mount member 121 and second mount member 122).
  • the mount member 117 is fixed to a support stay 74 welded onto the turning substrate 8. That is, the rear portion of the engine 10 is supported by fixing the mount member 117 attached to the engine 10 to the support stay 74 after welding the support stay 74 to the turning substrate 8. That is, the rear portion of the engine 10 is supported by the support stay 74 welded to the turning substrate 8 and the mount member 117 fixed to the support stay 74.
  • a support structure (referred to as a second support structure) that supports the front portion of the engine 10 will be described.
  • a front portion of the engine 10 is supported by an engine bracket 116.
  • the engine bracket 116 is fixed to the revolving substrate 8 by a fastening member instead of welding. That is, the rear portion of the engine 10 is supported only by the engine bracket 116 and is not welded to the turning board 8.
  • the rear part of the engine 10 is supported by the second support structure that does not require welding.
  • the number of welded portions to the swivel board 8 is reduced, the distortion of the swivel board is prevented, and the positional accuracy required for the engine or the like can be easily satisfied. Therefore, additional machining to satisfy the position accuracy can also be reduced.
  • each mount member varies, a torsional load is applied to the vibration-proof rubber of the mount member when the mount member is fixed to the upper surface of the stay. If the mount member is fixed in a state where a torsional load is applied to the anti-vibration rubber, the durability of the anti-vibration rubber may be reduced.
  • the rear portion of the engine 10 is supported only by the engine bracket 116. That is, the engine bracket 116 serves as a conventional mount member and stay. This eliminates the need for fixing the mount member to the stay.
  • the engine bracket 116 integrally supports the right front portion and the left front portion of the engine 10. That is, the right front part and the left front part of the engine are not individually supported by separate mounting members, but are integrally supported by one member. Therefore, there is no variation in the position of the mount member as in the prior art. This prevents the torsional load from being applied to the vibration-proof rubber when the engine bracket 116 is fixed to the turning board. In addition, the number of parts can be reduced, and manufacturing efficiency can be improved.
  • the second support structure is adopted at the front part of the engine 10 and the first support structure is adopted at the rear part of the engine 10, but the second support structure is adopted at the rear part of the engine 10,
  • a first support structure may be employed in the front portion of the engine 10. Further, the second support structure may be adopted for both the front part and the rear part of the engine 10.
  • the engine room ER is provided with a particle removing device 18.
  • the particle removing device 18 captures particulates containing harmful substances in the exhaust (exhaust gas) from the engine 10.
  • the particle removing device 18 is composed of a DPF (Diesel Particulate Filter) muffler.
  • the particle removing device 18 is provided on the right side of the engine 10 and above the hydraulic pump 11. As shown in FIG. 33, FIG. 37, and FIG. 38, the particle removing device 18 has a substantially cylindrical outer shape, and is arranged with the central axis direction of the cylinder facing forward and backward.
  • the intake port 18 a of the particle removing device 18 is opened leftward and is connected to the exhaust manifold of the engine 10.
  • the exhaust port 18b of the particle removing device 18 opens upward, and one end of the exhaust pipe 180 is connected.
  • the exhaust pipe 180 is curved in an arc shape, and the other end is opened obliquely upward and rearward.
  • One end of a tail pipe 181 is connected to the other end of the exhaust pipe 180.
  • the inner diameter of one end portion of the tail pipe 181 is larger than the outer diameter of the other end portion of the exhaust pipe 180, and the other end portion of the exhaust pipe 180 is fitted to the one end portion of the tail pipe 181 from the outside.
  • a fastening band 185 is attached to the outer surface of the connection portion between the exhaust pipe 180 and the tail pipe 181.
  • the fastening band 185 has a fastening screw 186.
  • the fastening band 185 tightens the connection portion between the exhaust pipe 180 and the tail pipe 181 from the outer surface. Thereby, the other end part of the exhaust pipe 180 and the one end part of the tail pipe 181 are firmly connected.
  • the tail pipe 181 has a first bent portion 181a and a second bent portion 181b.
  • the first bent portion 181a extends obliquely upward and rearward from the other end portion of the exhaust pipe 180 and then curves upward.
  • the second bent portion 181b extends upward continuously from the first bent portion 181a and then curves backward.
  • the other end (exhaust port) of the tail pipe 181 protrudes upward from an opening 33 a formed in the rear cover 33.
  • the exhaust gas from the engine 10 is discharged from the exhaust pipe 180 to the outside of the airframe 2 through the tail pipe 181 after the particulates are removed through the particle removing device 18.
  • a cover 182 is attached to the upper portion of the particle removing device 18 via an attachment fitting 183.
  • the cover 182 is omitted and all the mounting brackets 183 are shown.
  • the attachment fittings 183 are attached to the right side, the left side, the front side, and the rear side of the exhaust pipe 180, respectively.
  • the mounting bracket 183 is fixed to the upper part of the particle removing device 18 by welding or the like.
  • the cover 182 is attached to the mounting bracket 183 with a fastening member (bolt).
  • the cover 182 has a shape generally along the upper part of the particle removing device 18. Specifically, the cover 182 is formed in a substantially arc shape when viewed from the front by bending a metal plate at a plurality of locations.
  • the cover 182 has a flat upper surface 182a, and a bracket 184 is attached to the upper surface 182a.
  • the bracket 184 includes a substrate 184A, a holding portion 184B, a first adjustment portion 184C, and a second adjustment portion 184D.
  • the substrate 184A has a long hole 184a extending in the body width direction.
  • a fastening member (bolt) 187 is inserted into the elongated hole 184a, and the fastening member 187 passes through the upper surface 182a of the cover 182 and is fastened to a fastened member (nut) (not shown).
  • the substrate 184A is fixed to the upper surface 182a of the cover 182.
  • the substrate 184A can be moved in the length direction (machine width direction) of the long hole 184a by adjusting the position of the fastening member 187 with respect to the long hole 184a. That is, the fastening member 187 and the long hole 184a function as a first adjusting portion 184C for adjusting the position of the bracket 184 with respect to the cover 182.
  • the holding unit 184B holds the tail pipe 181.
  • the holding portion 184B includes a standing plate 184E, a holder 184F, and a member to be fastened (nut) 184g.
  • the standing plate 184E is fixed to the upper surface of the substrate 184A by welding or the like and extends upward.
  • the standing plate 184E extends to the upper part near the base end of the first bent portion 181a through the left side of the first bent portion 181a of the tail pipe 181.
  • a long hole 184b is formed in the upper part of the standing plate 184E.
  • a long hole 184d is formed in the lower part of the standing plate 184E.
  • the long holes 184b and 184d are arranged at intervals, and extend so as to incline so as to go backward as they go upward.
  • the upper elongated hole 184 b is located above the first bent portion 181 a of the tail pipe 181.
  • the lower long hole 184d is located below the first bent portion 181a of the tail pipe 181.
  • the holder 184F is a metal fitting bent in a U shape, and has a male screw portion at one end and the other end. One end of the holder 184F is inserted into the long hole 184b, and the other end is inserted into the long hole 184d.
  • the holder 184F is disposed along the outer surface of the first bent portion 181a of the tail pipe 181. Specifically, the holder 184F is disposed along the upper part from the lower part of the outer surface of the first bent part 181a through the right part.
  • the member to be fastened (nut) 184G is disposed on the left side of the standing plate 184E, and fastened to one end and the other end of the holder 184F via a washer.
  • a member to be fastened (nut) 184G By tightening a member to be fastened (nut) 184G to a screw portion formed on the holder 184F, the holder 184F approaches the standing plate 184E. As a result, the tail pipe 181 is held between the holder 184F and the standing plate 184E.
  • the holder 184F can be moved in the length direction (diagonally up and down direction) of the long holes 184b and 184d by adjusting the positions of the threaded portion and the fastening member 184G with respect to the long holes 184b and 184d.
  • the position (rise angle) of the tail pipe 181 held by the holder 184F changes. That is, the threaded portion of the holder 184F, the long holes 184b and 184d, and the member to be fastened 184G function as a second adjusting portion 184D for adjusting the position (rise angle) of the tail pipe 181 with respect to the bracket 184.
  • the bracket 184 includes a first adjustment unit 184C for adjusting the position of the bracket 184 and a second adjustment unit 184D for adjusting the position (rise angle) of the tail pipe 181.
  • the position of the bracket 184 relative to the cover 182 can be adjusted in the body width direction by the first adjustment unit 184C.
  • the position of the tail pipe 181 held by the bracket 184 can be adjusted in the body width direction to match the position of the opening 33a.
  • the width of the opening 33a (the length in the body width direction) is slightly larger than the outer diameter of the tail pipe 181.
  • the position (rise angle) of the tail pipe 181 with respect to the bracket 184 can be adjusted by the second adjustment unit 184D.
  • the position of the other end (exhaust port) of the tail pipe 181 can be adjusted in the front-rear direction to match the position of the opening 33a.
  • the position of the other end (exhaust port) of the tail pipe 181 it is possible to avoid interference between the rear cover 33 and the tail pipe 181 when the rear cover 33 is opened and closed.
  • the tail pipe 181 is held by the bracket 184, stress concentration on the root of the exhaust pipe 180 can be avoided even if the exhaust pipe 180 and the tail pipe 181 vibrate during exhaust.
  • the working machine 1 of the present embodiment includes a turning axis (vertical axis X), a driving axis of the engine 10 (an axis of the output shaft of the engine 10 connected to the hydraulic pump 11) 10C, Is greater than the longitudinal distance D4 between the pivot axis (vertical axis X) and the axis of the first pivot (horizontal axis) 51. That is, in the working machine 1 according to the present embodiment, the first pivot 51 on which the boom 27 is pivotally supported is in a front position relatively close to the pivot axis, and the engine 10 is in a rear position relatively far from the pivot axis. is there. In other words, the engine 10 is located rearward from the turning axis X as compared with a conventional working machine (see, for example, JP-A-2006-144456).
  • a longitudinal distance D5 between the rear end portion of the cabin 3 and the drive axis 10C of the engine 10 is larger than a longitudinal distance D6 between the front end portion of the cabin 3 and the axis of the first pivot (horizontal axis) 51. That is, the working machine 1 of the present embodiment is also in a position where the engine 10 is separated rearward in the positional relationship with the cabin 3 as compared with the conventional working machine. As described above, the engine 10 is arranged rearward as compared with the conventional work machine, so that the weight balance between the front part and the rear part of the work machine 1 is improved and the weight 9 at the rear part of the swivel base 7 is reduced. It becomes possible. Therefore, the weight of the work implement 1 as a whole is reduced, fuel efficiency is improved, and running costs can be reduced.
  • the working machine 1 of the present embodiment has a longitudinal distance D7 between the swivel axis (vertical axis X) and the rear end of the swivel board 8. It is greater than twice the longitudinal distance D4 between the pivot axis (vertical axis X) and the axis of the first pivot axis (horizontal axis) 51 (ie, D7> 2 ⁇ D4). That is, the working machine 1 of the present embodiment is located at a position where the rear end portion of the swivel board 8 is separated rearward from the swivel axis as compared with the conventional work machine. As a result, a wide space can be secured at the rear portion on the turning substrate 8, and the engine 10 can be disposed rearward from the turning axis. ⁇ Effect> According to the working machine 1 of this embodiment mentioned above, there exist the following effects.
  • the work machine 1 includes a substrate 8, an engine room ER provided at a rear portion on the substrate 8, a cover 30 that covers the engine room ER, and a support frame 90 that supports the cover 30.
  • the rear cover 33 that covers the rear and upper rear of the room ER and the front cover 34 that covers the upper front of the engine room ER are provided.
  • the support frame 90 includes a frame 91 that supports the rear cover 33, and the front cover 34. And a support portion 92 to support. Thereby, the front cover 34 and the rear cover 33 are independently supported by the frame 91 and the support portion 92 of the support frame 90. Therefore, it is possible to adopt a structure in which the front cover 34 and the rear cover 33 can be opened and closed independently, and access to the front part of the engine room ER (front of the engine 10) is facilitated to improve maintenance. be able to.
  • the frame body 91 is provided with a front leg portion 93 erected in front of the engine room ER, a rear leg portion 94 erected in the rear of the engine room ER, and a front leg portion 93 provided above the engine room ER. And a connecting portion 95 that connects the rear leg portion 94. Therefore, the rear cover 33 can be supported using the frame body 91 so as to cover the rear and upper rear of the engine room ER.
  • the support portion 92 includes a first support body 98 that extends from the connecting portion 95 to one side in the width direction of the substrate 8 and a second support body that extends from the connecting portion 95 to the other side in the width direction of the substrate 8. 99. Therefore, the front cover 34 can be supported using the first support body 98 and the second support body 99 so as to cover the front upper side of the engine room ER.
  • the first support body 98 includes a first front member 98A and a first rear member 98B provided behind the first front member 98A.
  • the second support body 99 includes a second front member 99A.
  • the front cover 34 includes a first front member 98A, a first rear member 98B, a second front member 99A and a second rear member 99B. Is fixed to the upper surface by fastening members B1 to B7. Therefore, the front cover 34 can be reliably supported by the upper surface of the first support body 98 and the upper surface of the second support body 99. Further, the front cover 34 can be easily detached from the first support body 98 and the second support body 99 by releasing the fastening of the fastening members B1 to B7.
  • the cabin 3 is provided on the board 8, and the frame body 91 includes a side leg portion 96 erected on one side in the width direction of the board 8, and one end portion connected to an upper portion of the side leg portion 96.
  • the other end portion has a bridging portion 97 connected to the front leg portion 93.
  • the rear portion of the cabin 3 is placed on the bridging portion 97, and the first front member 98A is connected thereto. Therefore, the strength of the support frame 90 is improved by having the side leg portions 96 and the bridging portions 97. Further, by connecting the first front member 98A to the bridging portion 97 on which the rear portion of the cabin 3 is placed, the strength of the first support body 98 is effectively increased using the bridging portion 97 that supports the cabin 3. be able to.
  • the cover 30 further includes a left cover 31 that covers the left side of the engine room ER and a right cover 32 that covers the right side of the engine room ER.
  • the left cover 31, the right cover 32, the rear cover 33, and the front cover 34 is provided so that opening and closing is possible. Therefore, it is possible to open the left side, the right side, the rear side, and the upper side of the cover 30, and it becomes easy to access the equipment mounted in the engine room ER, and the maintenance is excellent.
  • the tail pipe 181 when the tail pipe 181 is protruded from the opening 33a of the rear cover 33, the tail pipe 181 and the opening 33a can be easily aligned. It is also possible to avoid interference between the rear cover 33 and the tail pipe 181 when the rear cover 33 is opened and closed.
  • the adjustment unit includes a first adjustment unit 184C that adjusts the position of the bracket 184 with respect to the cover 182 and a second adjustment unit 184D that adjusts the position of the tail pipe 181 with respect to the bracket 184. Therefore, the position (orientation) of the exhaust port of the tail pipe 181 can be easily adjusted over a wide range.
  • the working machine disclosed in Patent Document 2 is provided on a substrate that can be turned around a vertical axis, an engine room provided at a rear portion on the substrate, a rear bonnet that covers the engine room, and the substrate.
  • the vertical rib has a right vertical rib and a left vertical rib.
  • An upper plate is provided on the front upper part of the right vertical rib and the front upper part of the left vertical rib.
  • a support frame for supporting the bonnet is provided in the rear bonnet.
  • the support frame includes a left leg, a right leg, a rear leg, and a support plate connected to the upper ends of these legs. Since the support frame is arranged so as to straddle the engine, a space for arranging devices such as the engine is secured in the engine room.
  • a mounting plate is provided on the board at a substantially center in the width direction of the front portion inside the engine room, and the lower end of the right leg of the support frame is supported on the mounting plate. Yes. Therefore, a mounting plate for mounting the support frame needs to be mounted on the board in the engine room, and there is a problem that the space in the engine room is reduced.
  • the work machine 1 includes a substrate 8, a first vertical rib 61 that extends from the front to the rear on the substrate 8 and is provided on one side in the width direction of the substrate 8, and the substrate 8. Extending from the front to the rear, the second vertical rib 62 provided on the other side of the substrate 8 in the width direction, the engine room ER provided at the rear on the substrate 8, and the front of the engine room ER.
  • a partition plate (first partition plate) 64 extending in the width direction of the substrate 8, a front leg portion 93 erected in front of the engine room ER, a rear leg portion 94 erected in the rear of the engine room ER, A support frame 90 having a connecting part 95 connecting the upper part of the front leg part 93 and the upper part of the rear leg part 94.
  • the front leg part 93 of the support frame 90 is above the first vertical rib 61 and is a partition. It is provided behind the plate 64.
  • the support frame 90 can be supported with a simple configuration without reducing the space in the engine room ER.
  • the support frame 90 includes a support plate 89 provided over the upper portion of the first vertical rib 61 and the upper portion of the second vertical rib 62 and extending to the rear of the partition plate 64 along the first vertical rib 61.
  • the front leg portion 93 is fixed to the upper surface of the support plate 89 behind the partition plate 64. Therefore, the support frame 90 can be reliably supported using the support plate 89.
  • the front leg portion 93 of the support frame 90 is fixed across the front and rear of the partition plate 64, the front leg portion 93 can be reliably supported by the partition plate 64.
  • the connecting portion 95 and the first partition plate 98d overlap when viewed from the one side, and the connecting portion 95 and the second partition plate 103 overlap when viewed from the other side. Therefore, the first partition plate 98d and the second partition plate 103 can be connected to the connecting portion 95.
  • the connection part 95 is reinforced from the right side and the left side, the strength (rigidity) of the connection part 95 is improved.
  • the working machine disclosed in Patent Document 3 includes a substrate that can turn around a vertical axis, and a vertical rib that extends from the front to the rear on the substrate.
  • the vertical rib includes a right vertical rib and a left vertical rib.
  • the strength of the working machine is improved by providing the board with ribs to increase the strength of the board.
  • it was necessary to proceed with development aiming at improving the strength of the working machine by further increasing the strength of the substrate.
  • the work machine 1 includes a substrate 8, a first vertical rib 61, and a second vertical rib 62, and is provided on the substrate 8 to support the device (hydraulic oil tank or the like) 21 and second. And a support base 68 connected to the side surface of the vertical rib 62. Therefore, the strength of the substrate 8 can be improved by connecting the support base 68 that supports the device 21 to the second vertical rib 62 by the support base 68 and the second vertical rib 62.
  • the support base 68 includes vertical plates 68B and 68C erected on the substrate 8, and an upper plate 68A that is provided on the upper portions of the vertical plates 68B and 68C and receives the lower surface of the device 21.
  • 68 ⁇ / b> A is connected to the side surface of the second vertical rib 62.
  • the upper plate 68A of the support stand 68 connected to the second vertical rib 62 is connected to the substrate 8 via the vertical plates 68B and 68C, and not only the second vertical rib 62 but also the vertical plates 68B and 68C and the upper plate 68B.
  • the strength of the substrate 8 can be further improved by the plate 68A.
  • the vertical plate has a first vertical plate 68B and a second vertical plate 68C provided in front of the first vertical plate 68B.
  • the first vertical plate 68B and the second vertical plate 68C are the second vertical ribs. 62 is connected to the side surface.
  • the first vertical plate 68B, the second vertical plate 68C and the upper plate 68A can not only firmly support the device (hydraulic oil tank or the like) 21 by the first vertical plate 68B, the second vertical plate 68C and the upper plate 68A, but also the first vertical plate 68B, the second vertical plate 68C and the upper plate 68A.
  • the strength of the substrate 8 can be increased.
  • a rear frame 66 extending in the width direction of the substrate 8 at the rear portion on the substrate 8 and connected to the rear end portion of the second vertical rib 62, and the first vertical plate 68B and the rear frame 66 are connected. Reinforcing ribs 69 are provided. Therefore, a rectangular structure can be formed in plan view by the second vertical rib 62, the upper plate 68A, the first vertical plate 68B, the rear frame 66, and the reinforcing rib 69 described above.
  • the substrate 8 can be made stronger.
  • a rear frame 66 extending in the width direction of the substrate 8 at the rear portion on the substrate 8 and connected to the rear end portion of the second vertical rib 62, the second vertical rib 62, the first vertical plate 68B, and the rear portion.
  • a reinforcing plate 70 for connecting the frame 66 is provided. Therefore, the substrate 8, the first vertical plate 68 ⁇ / b> B, the rear frame 66, and the reinforcing plate 70 can form a rectangular structure in a side view, so that the strength of the substrate 8 can be further increased.
  • the substrate 8 can be reduced in weight by reducing the thickness of the second vertical rib 62.
  • the working device 5 the support bracket (first bracket) 50, and support plates 88 and 89 provided between the upper portion of the first vertical rib 61 and the upper portion of the second vertical rib 62 are provided.
  • a step is provided between the support brackets 88 and 89 or the support plates 88 and 89 and the support bracket 50.
  • the support plates 88 and 89 can be divided
  • the support plates 88 and 89 and the support bracket 50 can be firmly connected by fillet welding in the level
  • the support plate includes a first support plate 88 connected to the support bracket (first bracket) 50, and a second support plate 89 provided behind the first support plate 88 and connected to the first support plate 88.
  • the step is formed between the first support plate 88 and the second support plate 89. Therefore, the first support plate 88 and the second support plate 89 can be connected by fillet welding 88, and high connection strength can be obtained. Since the connection strength between the first support plate 88 and the second support plate 89 is increased, the first vertical rib 61 and the second vertical rib 62 are reinforced by the support plate (the first support plate 88 and the second support plate 89). The effect is improved.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

La présente invention vise à fournir un engin de chantier ayant une structure de support de couvercle, qui simplifie l'accès à la partie avant du compartiment moteur et facilite la maintenance. Cet engin de chantier comprend un substrat (8), un compartiment moteur (ER) disposé à l'arrière au-dessus du substrat (8), un couvercle (30) qui recouvre le compartiment moteur (ER), et un cadre de support (90) qui soutient le couvercle (30), le couvercle (30) ayant un couvercle arrière (33) qui recouvre la partie arrière et la partie arrière au-dessus du compartiment moteur (ER), et un couvercle avant (34) qui recouvre la partie avant au-dessus du compartiment moteur (ER), et le cadre de support (90) a une structure de pont (91) qui soutient le couvercle arrière (33) et une partie de support (92) qui soutient le couvercle avant (34).
PCT/JP2016/066253 2015-09-30 2016-06-01 Engin de chantier WO2017056556A1 (fr)

Priority Applications (1)

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Applications Claiming Priority (6)

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JP2015194967A JP6644508B2 (ja) 2015-09-30 2015-09-30 作業機
JP2015194969A JP6563298B2 (ja) 2015-09-30 2015-09-30 作業機
JP2015194968A JP6563297B2 (ja) 2015-09-30 2015-09-30 作業機
JP2015-194969 2015-09-30
JP2015-194968 2015-09-30
JP2015-194967 2015-09-30

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WO2017056556A1 true WO2017056556A1 (fr) 2017-04-06

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Cited By (2)

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JP2019011574A (ja) * 2017-06-29 2019-01-24 株式会社クボタ 作業機
US11333224B2 (en) 2017-06-29 2022-05-17 Kubota Corporation Belt tension adjustment device and working machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020262522A1 (fr) * 2019-06-26 2020-12-30 株式会社クボタ Machine de travail

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JPS63172781U (fr) * 1987-04-30 1988-11-09
JP2009243069A (ja) * 2008-03-28 2009-10-22 Kubota Corp バックホー
JP2013087462A (ja) * 2011-10-17 2013-05-13 Kobelco Contstruction Machinery Ltd 建設機械のアッパーフレーム
JP2015143512A (ja) * 2014-01-31 2015-08-06 井関農機株式会社 作業車両のエンジン排ガス処理装置

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WO1999015794A1 (fr) * 1997-09-19 1999-04-01 Hitachi Construction Machinery Co., Ltd. Dispositif de refroidissement pour machines de construction et machines de construction
JP5061085B2 (ja) * 2008-11-17 2012-10-31 株式会社クボタ 旋回作業機のボンネットシール構造
CN201447724U (zh) * 2009-05-31 2010-05-05 三一重机有限公司 一种用于挖掘机的机顶罩

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Publication number Priority date Publication date Assignee Title
JPS63172781U (fr) * 1987-04-30 1988-11-09
JP2009243069A (ja) * 2008-03-28 2009-10-22 Kubota Corp バックホー
JP2013087462A (ja) * 2011-10-17 2013-05-13 Kobelco Contstruction Machinery Ltd 建設機械のアッパーフレーム
JP2015143512A (ja) * 2014-01-31 2015-08-06 井関農機株式会社 作業車両のエンジン排ガス処理装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019011574A (ja) * 2017-06-29 2019-01-24 株式会社クボタ 作業機
US11333224B2 (en) 2017-06-29 2022-05-17 Kubota Corporation Belt tension adjustment device and working machine

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CN107614799A (zh) 2018-01-19

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