Work machine

Abstract

To suppress occurrence of deflection in a fan cover by vibration.SOLUTION: A work machine 1 includes a machine body 2, a prime mover 23 mounted on the machine body 2, a cooling fan 29 arranged on the side of the prime mover 23, and a fan cover 129 covering the cooling fan 29, wherein the fan cover 129 has a first cover 130, and a second cover 131 which is formed separately from the first cover 130 and is arranged below the first cover 130.SELECTED DRAWING: Figure 33

Description

Technical Field

[0001] The present invention relates to a working machine.

Background Art

[0002] Conventionally, a working machine disclosed in Patent Document 1 is known.

[0003] The working machine disclosed in Patent Document 1 includes a fan cover that covers a cooling fan disposed on the side of a prime mover.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, when the range covered by the fan cover is extensive, the fan cover becomes a large part, and there is a problem that the fan cover is likely to bend due to vibration.

[0006] In view of the above problems, an object of the present invention is to provide a working machine capable of suppressing the occurrence of bending in the fan cover due to vibration.

Means for Solving the Problems

[0007] A working machine according to an aspect of the present invention includes a machine body, a prime mover mounted on the machine body, a cooling fan disposed on the side of the prime mover, and a fan cover that covers the cooling fan. The fan cover is configured to include a first cover and a second cover formed separately from the first cover and disposed below the first cover.

Effects of the Invention

[0008] According to the above work machine, by adopting a split structure having a first cover and a second cover for the fan cover, it is possible to suppress the occurrence of deflection in the fan cover due to vibration.

Brief Description of the Drawings

[0009]

Figure 1

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Figure 39

Mode for Carrying Out the Invention

[0010] Hereinafter, an embodiment of the present invention will be described with appropriate reference to the drawings.

[0011] FIG. 1 is a schematic side view showing the overall configuration of the working machine 1 according to the present embodiment. FIG. 2 is a schematic plan view of the working machine 1 with the working device 4 omitted. In the present embodiment, an excavator, which is a swing-type working machine, is exemplified as the working machine 1.

[0012] As shown in FIG. 1, the working machine 1 includes a machine body (swivel base) 2, a traveling device 3, and a working device 4. A cabin 5 is mounted on the machine body 2. Inside the cabin 5, a driver's seat 6 on which an operator sits is provided. The driver's seat 6 is surrounded by the cabin 5.

[0013] In the present embodiment, the direction toward the front side of the operator sitting on the driver's seat 6 of the working machine 1 (the direction of arrow A1 in FIGS. 1 and 2) is referred to as the front (front of the machine body), and the direction toward the rear side of the operator (the direction of arrow A2 in FIGS. 1 and 2) is referred to as the rear (rear of the machine body).

[0014] Also, the direction toward the left side of the operator (the back side in FIG. 1, the direction of arrow B1 in FIG. 2) is referred to as the left side, and the direction toward the right side of the operator (the front side in FIG. 1, the direction of arrow B2 in FIG. 2) is referred to as the right side.

[0015] Also, the horizontal direction, which is perpendicular to the front-rear direction (the front-rear direction of the vehicle body) K1, will be described as the vehicle body width direction (left-right direction) K2 (see FIG. 2). The direction from the central portion in the width direction of the vehicle body 2 toward the right portion or the left portion will be described as the outer side in the vehicle body width direction. That is, the outer side in the vehicle body width direction is the direction away from the center in the width direction of the vehicle body 2 in the vehicle body width direction K2. The direction opposite to the outer side in the vehicle body width direction will be described as the inner side in the vehicle body width direction. That is, the inner side in the vehicle body width direction is the direction approaching the center in the width direction of the vehicle body 2 in the vehicle body width direction K2.

[0016] As shown in FIG. 1, in this embodiment, the traveling device 3 is a crawler-type traveling device having a traveling frame 8 and crawler-type traveling mechanisms 9 provided on the left and right sides of the traveling frame 8. A dozer device 7 is mounted on the front portion of the traveling device 3.

[0017] The vehicle body 2 is mounted on the traveling frame 8 so as to be rotatable left and right. Specifically, as shown in FIGS. 1 and 2, the vehicle body 2 has a swivel substrate 15 which is a base plate constituting the bottom of the vehicle body 2. The swivel substrate 15 is formed of a thick plate material and is arranged such that the plate surface faces the vertical direction. The swivel substrate 15 is supported on the traveling frame 8 via a swivel bearing 16 so as to be rotatable about an axis (swivel axis X1) extending in the vertical direction. Thereby, the vehicle body 2 is rotatably supported by the traveling frame 8. It is supported so as to be rotatable about an axis (swivel axis X1) extending in the vertical direction. As a result, the vehicle body 2 is rotatably supported by the traveling frame 8.

[0018] As shown in FIG. 2, the swivel axis X1 is located at the front portion of the vehicle body 2 (swivel substrate 15) and substantially at the center in the vehicle body width direction K2. The vehicle body 2 has a swivel frame 19 including the swivel substrate 15, a support bracket 17 fixedly provided in a forward projecting shape at the front portion of the swivel substrate 15, and a pair of vertical ribs 18 extending rearward from the left and right portions at the rear of the support bracket 17 and fixed to the swivel substrate 15.

[0019] As shown in FIG. 1, a swing bracket 75 is rotatably supported on the support bracket 17 about an axis extending in the vertical direction. The working device 4 is attached to the swing bracket 75.

[0020] As shown in FIG. 1, the working device 4 includes a boom 76, a boom cylinder 79, an arm 77, an arm cylinder 80, a working implement (bucket) 78, and a working implement cylinder (bucket cylinder) 81. The base of the boom 76 is rotatably connected to a swing bracket 75 and is swingable in the vertical direction. The boom cylinder 79 drives the boom 76 to swing by expanding and contracting. The arm 77 is rotatably connected to the tip of the boom 76 and is swingable in the front-rear direction K1. The arm cylinder 80 drives the arm 77 to swing by expanding and contracting. The working implement 78 is rotatably connected to the tip side of the arm 77 and is swingable in the front-rear direction K1. The working implement cylinder 81 drives the working implement 78 to swing by expanding and contracting. In the present embodiment, a bucket is exemplified as the working implement 78.

[0021] Further, the machine body 2 has a weight 20 attached to the rear part of the swing frame 19 (swing base plate 15) and a swing cover 21 (see FIG. 2) that covers the left side surface and the left front surface of the swing frame 19 below the cabin 5.

[0022] As shown in FIG. 2, the weight 20 is provided from one side (right side) in the machine body width direction K2 of the swing base plate 15, through the rear of the swing base plate 15, to the other side (left side) in the machine body width direction K2 of the swing base plate 15.

[0023] The machine body 2 has a bonnet 22 that covers various devices, various apparatuses, etc. mounted on the machine body 2 (arranged above the swing frame 19). The bonnet 22 constitutes the right front surface, the right side surface, the upper surface of the right part and the rear part of the machine body, and the rear surface above the weight 20.

[0024] Various machines, various devices, etc. include a prime mover 23 composed of various engines or motors, etc., a pump unit 24 composed of a plurality of pumps that discharge hydraulic oil for operating a hydraulic actuator, pilot operating oil for operating a valve, and operating oil for signals, a cooling system equipment unit 27 including cooling system equipment such as a radiator 25 and an oil cooler 26, a battery 28 that supplies power to electrical components, etc., a fuel tank that stores fuel for the prime mover 23, a hydraulic oil tank that stores hydraulic oil, and the like.

[0025] As shown in FIG. 2, the prime mover 23 is disposed at the middle of the machine body width direction K2 at the rear part of the slewing base plate 15 and in front of the weight 20. The pump unit 24 is attached to the side part (left part) of the prime mover 23 in the machine body width direction K2. The cooling system equipment unit 27 is disposed on the side (right side) of the prime mover 23 in the machine body width direction K2. A cooling fan 29 is attached to the prime mover 23 and is disposed between the prime mover 23 and the cooling system equipment unit 27. The cooling fan 29 is disposed on the side (right side) of the prime mover 23 and is driven by the driving force of the prime mover 23. Further, the cooling fan 29 is a suction type fan and generates cooling air that sucks air from the right side of the cooling system equipment unit 27 and flows it toward the prime mover 23 side. At the rear part of the right surface of the bonnet 22, an outside air introduction part 30 (see FIG. 1) for taking outside air into the bonnet 22 is provided.

[0026] As shown in FIG. 4, the slewing frame 19 (machine body 2) has a support frame 31 mounted thereon. Specifically, the support frame 31 is erected at the rear part of the slewing frame 19 (machine body 2). As shown in FIG. 12, the support frame 31 is disposed inside the bonnet 22. Further, the support frame 31 supports the bonnet 22.

[0027] As shown in FIG. 4, the support frame 31 is attached to a plurality of frame attachment parts (first frame attachment part 32, second frame attachment part 33, third frame attachment part 34, fourth frame attachment part 35) provided on the slewing base plate 15.

[0028] As shown in FIGS. 4 and 5, the support frame 31 includes a first structure 36 that forms the right part of the support frame 31, a second structure 37 that forms the left part of the support frame 31, and an upper plate 38 that connects the first structure 36 and the second structure 37. The support frame 31 is formed of a plate material.

[0029] As shown in FIG. 12, the first structure 36 is disposed on the right side of the prime mover 23. This first structure 36 is a structure disposed between the prime mover 23 and a partition plate (plate member) 39 described later.

[0030] As shown in FIGS. 4 and 5, the first structure 36 includes a front structure part 40, a rear structure part 41 disposed at a distance behind the front structure part 40, and an upper structure part 42 that connects the upper parts of the front structure part 40 and the rear structure part 41.

[0031] The front structure part 40 is composed of a first front leg 43 and a first part 44a of the second front leg 44. The first front leg 43 has a front plate part 43a and a pair of left and right side plate parts 43b.

[0032] The front plate part 43a is arranged such that the plate surface faces the front-rear direction and is formed long in the up-down direction. The right side plate part 43ba is referred to as the first side plate part, and the left side plate part 43bb is referred to as the second side plate part. The first side plate part 43ba extends rearward from the right end of the front plate part 43a. The second side plate part 43bb extends rearward from the left end of the front plate part.

[0033] The first part 44a of the second front leg 44 is formed so as to shift rearward as it goes upward. The first part 44a is fixed to the second side plate part 43bb. The first front leg 43 and the first part 44a of the second front leg 44 are attached to the first frame attachment part 32 (see FIG. 4).

[0034] The second front leg 44 has a second part 44b that extends rearward from the first part 44a.

[0035] The rear component 41 is constituted by the first part 45a of the rear leg (leg body) 45. The first part 45a of the rear leg 45 is formed so as to extend in the vertical direction. The rear component 41 (rear leg 45) is attached to the second frame attachment part 33 (see FIG. 4).

[0036] The rear leg 45 has a second part 45b that extends forward from the upper part of the first part 45a. The second part 45b is located above the shroud 57 (see FIG. 11). Therefore, the second part 45b is located above the cooling fan 29 (see FIG. 34).

[0037] The upper component 42 connects the upper parts of the front component 40 and the rear component 41 to each other. The upper component 42 is located above the shroud 57 and the cooling fan 29. The upper component 42 is constituted by a plate member 46, a second part 44b of the second front leg 44, a second part 45b of the rear leg 45, and a side plate 47. The plate member 46 is arranged such that the plate surface faces in the vertical direction, and is constituted by a plate material that is fixed to the upper part of the first front leg 43 at the front part and is arranged to extend rearward. The side plate 47 is connected to the upper part of the first side plate part 43ba, the second part 45b of the rear leg 45, and the right part of the lower surface of the plate member 46.

[0038] As shown in FIGS. 4 and 5, the second structure 37 is arranged at an interval to the left of the first structure 36. As shown in FIG. 12, the second structure 37 is arranged to the left of the prime mover 23.

[0039] As shown in FIGS. 4 and 5, the second structure 37 has a front leg 48 and a rear leg 49.

[0040] The front leg 48 has a first part 48a formed so as to shift rearward as it goes upward, and a second part 48b that extends rearward from the upper part of the first part 48a. The front leg 48 is attached to the third frame attachment part 34 (see FIG. 4).

[0041] The rear leg 49 has a first portion 49a extending in the vertical direction and a second portion 49b extending forward from the upper part of the first portion 49a and connected to the second portion 48b of the front leg 48. The rear leg 49 is attached to the fourth frame attachment portion 35 (see FIG. 4).

[0042] As shown in FIGS. 4 and 5, the upper plate 38 is formed of a plate material that is long in the machine body width direction K2. The upper plate 38 is arranged such that the plate surface faces in the vertical direction. Further, the upper plate 38 extends across the middle part in the front-rear direction K1 of the upper part of the first structure 36 and the middle part in the front-rear direction K1 of the upper part of the second structure 37.

[0043] Note that, in this embodiment, the support frame 31 is attached to a member fixed to the swivel board 15, but it is not limited thereto, and the support frame 31 may be directly fixed to the swivel board 15. That is, the support frame 31 is attached to the swivel board 15 directly or indirectly.

[0044] As shown in FIG. 6, the bonnet 22 has a partition member 50 and a bonnet rear part (cover member) 51 that can be opened and closed. The partition member 50 covers the upper front part and the front (upper front) of the prime mover 23. The partition member 50 is provided across the second front leg 44 to the second structure 37 (front leg 48) and is fixed to the support frame 31 (see FIG. 7). The upper part of the prime mover 23 above and the rear side of the upper part of the partition member 50 are covered by the upper plate 38.

[0045] As shown in FIG. 6, below the partition member 50, a partition member 53 is provided that partitions the lower front part of the prime mover chamber 52 that houses the prime mover 23. The bonnet rear part 51 covers the rear of the prime mover 23 in an openable and closable manner. The bonnet rear part 51 is supported by a support plate 54 (see FIG. 7) provided on the support frame 31 via a hinge device (not shown) so as to be swingable up and down, and opens and closes the prime mover chamber 52 by swinging up and down.

[0046] As shown in FIG. 6, the upper front end between the upper part of the rear bonnet 51 and the upper plate 38 is covered by a covering member 55. The weight 20 is disposed below the rear bonnet 51, and the rear part of the lower part of the prime mover 23 is covered by the weight 20. The lower part of the prime mover 23 is covered by the swivel board 15.

[0047] The above partition member 50, rear bonnet 51, partition member 53, weight 20, swivel board 15, support plate 54, covering member 55, upper plate 38, etc. constitute the prime mover chamber 52.

[0048] As shown in FIGS. 10 and 11, a partition plate 39 is attached to the support frame 31. This partition plate 39 is formed of a plate material. As shown in FIG. 12, the partition plate 39 is a member that partitions the prime mover chamber 52 that houses the prime mover 23 and the arrangement side 56 of the cooling system equipment (radiator 25, oil cooler 26, etc.). The lower part of the partition plate 39 is attached onto the swivel board 15.

[0049] As shown in FIGS. 13, 14, and 15, the partition plate 39 has an opening 59 through which a shroud 57 that guides the cooling air for cooling the cooling system equipment can be inserted, and an attachment part (referred to as a shroud attachment part) 58 for attaching the shroud 57 to the partition plate 39 with the shroud 57 inserted through the opening 59.

[0050] As shown in FIG. 13, the opening 59 is formed in a rectangular shape. The opening 59 is formed so that the shroud 57 can be inserted from the arrangement side of the cooling system equipment into the prime mover chamber 52 side. A plurality (five places in this embodiment) of shroud attachment parts 58 are provided around the opening 59. The shroud attachment part 58 is provided with an insertion hole through which a bolt is inserted, and a nut that is disposed at a position corresponding to the insertion hole and fixed to the left surface of the partition plate 39.

[0051] As shown in Fig. 10, the partition plate 39 includes an opening 59 and a shroud attachment portion 58, and has a main plate portion 60 attached to the support frame 31, and a lower wall portion 61 (see Fig. 3) that extends horizontally from the lower end of the main plate portion 60 and is attached to the swivel substrate (base plate) 15.

[0052] As shown in Fig. 10, the main plate portion 60 is arranged such that the plate surface faces the machine width direction K2. The main plate portion 60 has a main board portion 60a and a bracket fixing portion 60b. An opening 59 is formed in the main board portion 60a, and a shroud attachment portion 58 is provided. An attachment member 62 is fixed to the bracket fixing portion 60b.

[0053] As shown in Fig. 10, a plurality (five in this embodiment) of attachment stays 63 are fixed to the first structure 36 of the support frame 31. The main plate portion 60 (partition plate 39) is fixed to the attachment stay 63 by bolts or the like. Further, the main plate portion 60 (partition plate 39) is attached to the first structure 36 (support frame 31) from the outside (right side) in the machine width direction. In other words, the main plate portion 60 (partition plate 39) is attached to the first structure 36 from the side opposite to the prime mover 23 (the side where the cooling system equipment is arranged). It is attached.

[0054] The lower wall portion 61 extends rightward from the lower end of the main plate portion 60 such that the plate surface faces the vertical direction. The lower wall portion 61 is overlapped on the swivel substrate 15 (in surface contact) and fixed to the swivel substrate 15 by a fixture such as a bolt (see Fig. 3).

[0055] As shown in Fig. 11, the partition plate 39 is formed to have a size that covers the space between the swivel substrate (base plate) 15 and the upper structure portion 42 from the front structure portion 40 to the rear structure portion 41. That is, the partition plate 39 covers the space surrounded by the upper structure portion 42, the front structure portion 40, the first frame attachment portion 32, the swivel substrate 15, the second frame attachment portion 33, and the rear structure portion 41 from the right side (outside in the machine width direction).

[0056] The gaps between the partition plate 39, the first structural body 36, the first frame mounting portion 32, the second frame mounting portion 33, and the right vertical rib 18 are appropriately sealed by a sealing material or a sealing structure.

[0057] As shown in FIG. 8, a seal member 64 is provided over the upper rear end portion and the rear upper end portion of the partition plate 39. By this seal member 64 and the cover plate 65 to which the seal member 64 is attached, the air flow from the right side of the partition plate 39 to the prime mover chamber 52 is blocked at the rear side of the upper portion of the partition plate 39. More specifically, as shown in FIGS. 1, 2, and 12, the bonnet 22 has a rear side cover (cover member) 66 that covers the right side, upper side, and rear side of the cooling system equipment. As shown in FIGS. 8, 9, and 12, a cover plate 65 that covers the gap between the inner surface of the rear side cover 66 and the partition plate 39 is fixed to the inner surface of the rear side cover 66, the seal member 64 is attached to the cover plate 65, and the seal member 64 is abutted against the partition plate 39 from the right side. The gap between the weight 20 and the partition plate 39 is appropriately sealed by a sealing material or a sealing structure.

[0058] As shown in FIG. 6, the upper front portion of the partition plate 39 does not communicate with the prime mover chamber 52. Further, holes for passing routing members such as hoses, pipes, and harnesses are formed in the partition plate 39, and the holes are blocked by grommets or the like in a state where the routing members are passed through.

[0059] The shroud 57 is a resin member that guides the cooling air generated by the cooling fan. Note that the shroud 57 is not limited to being made of resin, and may be made of sheet metal or the like.

[0060] As shown in FIGS. 14 and 15, the shroud 57 has a covering portion 57a that covers the periphery of the cooling fan 29, an intake port portion 57b that is provided at a distance from the covering portion 57a and takes in cooling air into the shroud 57, and a wind guiding portion 57c that guides the cooling air from the intake port portion 57b to the covering portion 57a. The covering portion 57a is cylindrical with an inner diameter slightly larger than the rotation locus of the cooling fan 29. The intake port portion 57b is located to the right of the covering portion 57a. The right end of the intake port portion 57b is a rectangular opening that opens to the right. The opening area of the intake port portion 57b is larger than the opening area of the covering portion 57a. The wind guiding portion 57c is formed so as to narrow from the intake port portion 57b toward the covering portion 57a.

[0061] As shown in FIGS. 13, 14, and 15, the shroud 57 has an attachment wall portion 57d for attaching the shroud 57 to the partition plate 39. The attachment wall portion 57d protrudes from the intake port portion 57b and is formed along the edge of the opening 59.

[0062] The attachment wall portion 57d abuts against the partition plate 39 from the side opposite to the prime mover 23 (the side where the cooling system equipment is arranged) around the opening 59 and is attached to the shroud attachment portion 58 from the opposite side. Specifically, with respect to the partition plate 39, the covering portion 57a and the wind guiding portion 57c are inserted into the opening 59 from the right, the attachment wall portion 57d is abutted against the surface (right surface) around the opening 59, and the attachment wall portion 57d is attached to the shroud attachment portion 58 via bolts, whereby the shroud 57 is assembled to the partition plate 39. In other words, the shroud attachment portion 58 is formed such that the shroud 57 can be attached to the partition plate 39 from the side where the cooling system equipment is arranged with the shroud 57 inserted into the opening 59 from the side where the cooling system equipment is arranged toward the prime mover chamber 52 side.

[0063] As shown in FIG. 3, the cooling system equipment unit 27 includes, in addition to the above-described radiator (first cooler) 25 and oil cooler (second cooler) 26, cooling system equipment such as a capacitor (third cooler) 67, a fuel cooler (fourth cooler) 68, and a receiver (receiver tank) 69. Ra The radiator 25 is a cooler that cools the coolant of the prime mover 23. The oil cooler 26 is a cooler that cools the hydraulic oil (pressure oil) returning to the hydraulic oil tank that stores the hydraulic oil. The condenser 67 is a cooler that cools the refrigerant that has been brought into a semi-liquid state by the compressor 135 (see FIGS. 32 and 33) to promote liquefaction. The fuel cooler 68 is a cooler that cools the return fuel from the prime mover 23 before returning it to the fuel tank. The receiver 69 is a device that separates the refrigerant that could not be liquefied by the condenser 67 from the liquefied refrigerant and removes moisture and impurities.

[0064] As shown in FIG. 14, both the radiator 25 and the oil cooler 26 are arranged such that their core parts face the machine width direction K2, and they are arranged in parallel side by side in the front-rear direction (machine front-rear direction) K1. A seal member 70 is interposed between the radiator 25 and the oil cooler 26. Also, the radiator 25 and the oil cooler 26 are arranged so as to close the right end opening of the intake port 57b of the shroud 57.

[0065] As shown in FIG. 3, the fuel cooler 68 and the condenser 67 are arranged to the right of the radiator 25 and the oil cooler 26, and are cooled by the cooling air generated by the cooling fan 29. The receiver 69 is arranged in front of the oil cooler 26.

[0066] As shown in FIG. 3, the cooling system equipment unit 27 is arranged on the outer side (right side) in the machine width direction of the partition plate 39. The cooling system equipment that constitutes the cooling system equipment unit 27 is assembled to the partition plate 39 from the right side (opposite side to the prime mover 23) of the partition plate 39. In other words, the cooling system equipment is assembled to the partition plate 39 from the side where the cooling system equipment is arranged with the shroud 57 attached to the partition plate 39.

[0067] As shown in FIG. 16, the radiator 25 is attached to the partition plate 39 via a first bracket 86 and a second bracket 87. Specifically, the first bracket 86 is disposed above the radiator 25. As also shown in FIG. 17, the first bracket 86 is attached to the upper part of the partition plate 39 by bolts. As shown in FIG. 18, the upper part of the radiator 25 is vibration-proof supported by the first bracket 86 via a vibration-proof member 88. As shown in FIG. 16, a suspension tool 89 is fixed to the rear part of the first bracket 86.

[0068] As shown in FIG. 16, the second bracket 87 is disposed below the radiator 25. As shown in FIGS. 17 and 18, the second bracket 87 is attached to an attachment member 62 provided at a bracket fixing portion 60b of the partition plate 39 by bolts. As shown in FIG. 18, the lower part of the radiator 25 is vibration-proof supported by the second bracket 87 via a vibration-proof member 90.

[0069] As shown in FIG. 16, the oil cooler 26 is attached to the partition plate 39 via a third bracket 91. As shown in FIG. 17, the third bracket 91 includes a pair of upper stays 92 attached to the upper part of the partition plate 39 by bolts, a pair of lower stays 93 attached to the lower part of the partition plate 39 by bolts, an upper connecting member 99 connecting the front and rear upper stays 92, a lower connecting member 100 connecting the front and rear lower stays 93, a pair of connecting members 94 connecting the upper stay 92 and the lower stay 93 on the same side in the front-rear direction K1, and a plurality of attachment stays 95. The plurality of attachment stays 95 are provided in pairs on each of the connecting members 94.

[0070] As shown in FIG. 19, the third bracket 91 is disposed to the right of the oil cooler 26. The oil cooler 26 has a plurality of attached stays 96 corresponding to the plurality of mounting stays 95. Each attached stay 96 is attached to the corresponding mounting stay 95 by bolts via vibration damping members 97. A hoist 98 is fixed to the front upper stay 92. Note that the attachment positions and numbers of the hoist 89 and the hoist 98 are not limited to the above-described positions and numbers, and may be provided at at least a part of the assembled body 112 so that the assembled body 112 configured by assembling the shroud 57 and the cooling system equipment unit 27 to the partition plate 39 can be integrally lifted.

[0071] As shown in FIG. 20, the fuel cooler 68 and the capacitor 67 are attached to the partition plate 39 via the fourth bracket 101, the first bracket 86, and the third bracket 91. The fourth bracket 101 includes a pair of front and rear stay members 102, an upper member 103 formed to extend in the front-rear direction K1 to which the pair of stay members 102 are fixed, and a lower member 104 disposed at a distance below the upper member 103, a stay member 105 attached to the lower member 104, a pair of front and rear connecting rods 106 connecting the upper member 103 and the lower member 104, a pair of upper and lower mounting stays 107 fixed to the rear connecting rod 106, and a plurality of mounting stays 108 fixed to each of the connecting rods 106 in pairs.

[0072] The front stay member 102 is attached to the front upper stay 92. The rear stay member 102 is attached to the first bracket 86. The stay member 105 is attached to the rear lower stay 93. The fuel cooler 68 is attached to the pair of upper and lower mounting stays 107. The capacitor 67 is attached to the plurality of mounting stays 108.

[0073] As shown in FIG. 21, the receiver 69 is attached to the partition plate 39 via the fifth bracket 109. The fifth bracket 109 is fixed to the partition plate 39 by welding. An attachment member 110, which is attached to the fifth bracket 109 by bolts, is attached to the receiver 69. Also, a bar 111, which is welded and fixed to the partition plate 39, is disposed below the receiver 69. For example, when attaching the receiver 69 to the fifth bracket 109, the receiver 69 can be easily attached by placing it on the bar.

[0074] The rear side cover 66 is supported by the swivel frame via a hinge device at the front, and the rear can swing in the machine width direction K2 with the front as a fulcrum. By swinging the rear side cover 66 in the machine width direction K2, the arrangement side 56 (see FIG. 12) of the cooling system equipment (cooling system equipment unit 27) can be opened and closed freely. By opening the rear side cover 66, it is possible to access the cooling system equipment (inspect the cooling system equipment) that constitutes the cooling system equipment unit 27. By making the shroud 57 and each cooling system equipment detachable from the outside (right side) in the machine width direction on the partition plate 39, maintenance, replacement, etc. of the shroud 57 and each cooling system equipment can be easily performed.

[0075] As shown in FIG. 22, the shroud 57 and the cooling system equipment unit 27 can be assembled to the swivel frame 19 (airframe 2) in a state of being assembled to the partition plate 39. Specifically, first, an assembly 112 formed by assembling the shroud 57 and the cooling system equipment unit 27 to the partition plate 39 is lifted by a hoisting device or the like using the above-described slings 89 and 98, and is lowered near the right side of the support frame 31 from above, and the assembly 112 is placed on the swivel substrate 15. Next, the main plate portion 60 of the partition plate 39 is attached to the support frame 31 and the lower wall portion 61 is attached to the swivel substrate 15 (see FIG. 3).

[0076] As shown in FIG. 22, an aperture 113 is formed in the upper and front portions of the partition plate 39, penetrating the partition plate 39 in the machine width direction K2. This aperture 113 is necessary for tightening the bolt 114 (see FIG. 23) and passing the routing member 115 (see FIG. 24) when the assembly 112 is mounted on the machine body 2.

[0077] Specifically, as shown in FIG. 23, in which the shroud 57 and the cooling system equipment unit 27 etc. are omitted for illustration, by forming the above-mentioned aperture 113, after the assembly 112 is assembled to the slewing frame 19, the bolt 114 arranged on the left side of the partition plate 39 can be tightened from the right side of the partition plate 39 through the aperture 113. In this case, for example, there is a case of tightening the bolt 114 for attaching the holder 117 for holding the air conditioner hose 116 of the air conditioning system (air conditioner) equipped on the working machine 1 to the support frame 31.

[0078] Also, as shown in FIG. 24, in which the shroud 57 and the cooling system equipment unit 27 etc. are omitted for illustration, by forming the above-mentioned aperture 113, after the assembly 112 is assembled to the slewing frame 19, the routing member (duct member) 115 routed through the partition plate 39 from the left side (prime mover 23 side) to the right side of the partition plate 39 can be passed through. In this case, for example, there is a case of connecting the duct member 115 for guiding air from the air cleaner 118 that purifies the air supplied to the prime mover 23 to the prime mover 23 through the aperture 113 to the air cleaner 118.

[0079] The air cleaner 118 is attached to a bracket 119 that is arranged on the right side of the partition plate 39 and attached to the support frame 31 after the partition plate 39 is attached to the support frame 31 and the slewing substrate 15. Therefore, after the partition plate 39 is attached to the support frame 31 and the slewing substrate 15, it is necessary to route the duct member 115 from the left side (prime mover 23 side) of the partition plate 39 to the air cleaner 118.

[0080] ​ As shown in FIG. 25, after tightening the bolt 114 and arranging the duct member 115 on the partition plate 39, a closing structure 120 for closing the opening 113 with the duct member 115 passing through the opening 113 is attached to the opening 113. The closing structure 120 has a plurality of seal members 121A and 121B that are in close contact with each other and seal. The plurality of seal members 121A and 121B are in close contact with each other in a direction along the plate surface of the partition plate 39.

[0081] Next, the closing structure 120 will be described in detail.

[0082] The closing structure 120 has a divided structure that is divided into a plurality of parts. In the present embodiment, the closing structure 120 is divided into two parts, a first divided body 120A and a second divided body 120B. However, it is not limited to this, and the closing structure 120 may be divided into three or more parts.

[0083] As shown in FIG. 25, the first divided body 120A is composed of a first plate member 122A and a first seal member (seal member) 121A. As shown in FIGS. 26, 27, and 28, a groove 123A is formed in the first seal member 121A, and the first seal member 121A is attached to the first plate member 122A by inserting the first plate member 122A into the groove 123A. The first plate member 122A is attached to the partition plate 39 by bolts or the like.

[0084] As shown in FIG. 25, the second divided body 120B is composed of a second plate member 122B and a second seal member (seal member) 121B. As shown in FIGS. 26, 27, and 28, a groove 123B is formed in the second seal member 121B, and the second seal member 121B is attached to the second plate member 122B by inserting the second plate member 122B into the groove 123B. The second plate member 122B is attached to the partition plate 39 by bolts or the like.

[0085] The first plate member 122A and the second plate member 122B are formed of a metal plate material. The first seal member 121A and the second seal member 121B are formed of an elastic member such as rubber.

[0086] As shown in FIGS. 27 and 28, the first seal member 121A and the second seal member 121B are in contact (adhered) with each other in a butted state, thereby sealing the space between the first divided body 120A and the second divided body 120B. Specifically, as shown in FIGS. 25 and 27, the portions 124 extending in the vertical direction at the front of the first seal member 121A and the second seal member 121B are in contact with each other in the front-rear direction K1. The portions 125 extending in the front-rear direction at the front and rear of the first seal member 121A and the second seal member 121B are in contact with each other in the vertical direction.

[0087] According to the above-described closing structure 120, with the duct member 115 inserted into the opening 113, for example, the first divided body 120A is attached to the partition plate 39, and then the second divided body 120B is brought close to the first divided body 120A from below and brought into contact with the first divided body 120A, and the second divided body 120B is attached to the partition plate 39. Alternatively, with the duct member 115 inserted into the opening 113, the second divided body 120B is attached to the partition plate 39, and then the first divided body 120A is brought close to the second divided body 120B from above and brought into contact with the second divided body 120B, and the first divided body 120A is attached to the partition plate 39.

[0088] As shown in FIG. 25, the closing structure 120 has a seal portion 128 in the middle of the front-rear direction K1. The seal portion 128 contacts the periphery of the duct member 115 inserted into the opening 113 and seals the periphery of the duct member 115.

[0089] The seal portion 128 has an upper first portion 128A and a lower second portion 128B. The first portion 128A extends integrally from the first seal member 121A. The second portion 128B extends integrally from the second seal member 121B.

[0090] As shown in FIG. 26, the first part 128A and the second part 128B are formed thinner than the first seal member 121A and the second seal member 121B so as to absorb the mounting error and tolerance of the duct member 115 (so as to be easily elastically deformed).

[0091] As shown in FIG. 29, notches 127 are formed at the upper end portions of the front parts of the first seal member 121A and the second seal member 121B so that the first plate member 122A and the second plate abut against the partition plate 39 on the left side of the closing structure 120. Also, notches 126 are formed at the rear end portions of the first seal member 121A and the second seal member 121B so that the first plate member 122A and the second plate abut against the partition plate 39 on the left side of the closing structure 120.

[0092] As shown in FIG. 22, a fan cover 129 that covers the cooling fan 29 is attached to the support frame 31. The fan cover 129 is formed of a plate material. As shown in FIG. 30, the fan cover 129 is disposed on the side (left side) of the rear leg (leg body) 45 of the support frame 31. As shown in FIGS. 30 and 31, the fan cover 129 includes a first cover 130 and a second cover 131 formed separately from the first cover 130. The second cover 131 is disposed below the first cover 130.

[0093] As shown in FIG. 34, the first part 45a of the rear leg 45 is located behind the cooling fan 29. The first cover 130 is disposed at the upper left side (prime mover 23 side) of the first part 45a of the rear leg 45. The second cover 131 is disposed at the lower left side of the first part 45a of the rear leg 45.

[0094] As shown in FIGS. 32 and 33, the right part of the cooling fan 29 is inserted into the shroud 57. The first cover 130 covers the rear part of the left part of the cooling fan 29 from above. Also, the first cover 130 covers the space above the rear part of the cooling fan 29 from the rear. The second cover 131 covers the upper part of the left part of the cooling fan 29 from the rear. As shown in FIG. 32, the lower rear part of the cooling fan 29 is covered by the weight 20.

[0095] As shown in FIGS. 30, 31, and 33, the first cover 130 has an upper wall portion 130a, an intermediate wall portion 130b, and a rear wall portion 130c. The plate surface of the upper wall portion 130a faces the vertical direction. The intermediate wall portion 130b extends in an inclined direction that shifts downward as it extends rearward from the rear end of the upper wall portion 130a. The plate surface of the intermediate wall portion 130b faces a direction perpendicular to the inclined direction. The rear wall portion 130c extends downward from the lower end of the intermediate wall portion 130b. The plate surface of the rear wall portion 130c faces the front-rear direction K1. The first cover 130 is formed to be open toward the left (the prime mover 23 side).

[0096] Also, the first cover 130 is attached to the upper part of the first portion 45a and the rear part of the second portion 45b of the rear leg 45. Specifically, as shown in FIG. 31, stay members 132 are fixed to the upper part of the first portion 45a and the rear part of the second portion 45b. The stay member 132A fixed to the first portion 45a is referred to as the first stay member, and the stay member 132B fixed to the second portion 45b is referred to as the second stay member. The rear wall portion 130c of the first cover 130 is attached to the first stay member 132A by bolts or the like. The upper wall portion 130a of the first cover 130 is attached to the second stay member 132B by bolts or the like.

[0097] As shown in FIG. 33, the second cover 131 is arranged to be displaced rearward with respect to the first cover 130. As shown in FIGS. 33, 35, and 36, the second cover 131 has an upper wall portion 131a, an intermediate wall portion 131b, a rear wall portion 131c, side wall portions 131d, and a front wall portion 131e.

[0098] The upper wall portion 131a has a front portion 131f whose plate surface faces the vertical direction, and a rear portion 131g that extends in an inclined direction that shifts downward as it extends rearward from the front portion 131f. The plate surface of the rear portion 131g faces a direction orthogonal to the inclined direction.

[0099] The intermediate wall portion 131b extends in an inclined direction that shifts downward as it extends rearward from the rear end of the upper wall portion 131a. The plate surface of the intermediate wall portion 131b faces a direction orthogonal to the inclined direction.

[0100] The rear wall portion 131c extends downward from the lower end of the intermediate wall portion 131b. The plate surface of the rear wall portion 131c faces the front-rear direction K1.

[0101] The side wall 131d constitutes the right side surface of the second cover 131. The side wall 131d has a first portion 131h and a second portion 131i. The first portion 131h is formed from the front end portion of the upper wall portion 131 a to the middle portion of the intermediate wall portion 131b. The plate surface of the first portion 131h faces the machine body width direction K2. A plurality of ventilation holes 133 are formed in the first portion 131h in a penetrating manner. The second portion 131i extends in an inclined direction that shifts leftward as it extends rearward from the rear end of the first portion 131h. The rear end of the second portion 131i is connected to the right end of the rear wall portion 131c. The plate surface of the second portion 131i faces a direction orthogonal to the inclined direction.

[0102] The front wall portion 131e extends rightward from the front end of the side wall 131d. The plate surface of the front wall portion 131e faces the front-rear direction K1.

[0103] The second cover 131 is formed to be open toward the left (the prime mover 23 side).

[0104] The second cover 131 is attached to the lower part of the first part 45a of the rear leg 45. Specifically, as shown in FIG. 31, a pair of upper and lower stay members 134 are fixed to the lower part of the first part 45a. The upper stay member 134A is referred to as the third stay member, and the lower stay member 134B is referred to as the fourth stay member. The upper part of the front wall portion 131e is attached to the third stay member 134A by bolts or the like. The lower part of the front wall portion 131e is attached to the fourth stay member 134B by bolts or the like.

[0105] As shown in FIGS. 32 and 33, on the side where the cooling fan 29 in the prime mover 23 is arranged, a compressor (first driven machine) 135 and an alternator (second driven machine) 136 driven by the power of the prime mover 23 are arranged. The compressor 135 is a device that constitutes a part of an air conditioning system (air conditioner) equipped on the working machine, and compresses a refrigerant (air conditioning gas) into a semi-liquid state. The alternator 136 outputs DC power and can be used as a DC power source or enable power storage in the battery 28.

[0106] As shown in FIGS. 32 and 33, the compressor 135 is arranged to the left of the cooling fan 29. Also, the compressor 135 is arranged above the rear part of the cooling fan 29. The alternator 136 is arranged with a positional shift downward and rearward with respect to the compressor 135.

[0107] The first cover 130 is arranged at a position covering the compressor 135. The second cover 131 is arranged at a position covering the alternator 136.

[0108] The compressor 135 is driven by the first transmission mechanism 137. The alternator 136 is driven by the second transmission mechanism 138. The first transmission mechanism 137 and the second transmission mechanism 138 are constituted by a belt drive mechanism or the like.

[0109] As shown in FIG. 32, an output shaft 139 from which the power of the prime mover 23 is output is provided at the lower part of the right side of the prime mover 23. As shown in FIGS. 32 and 33, a drive pulley 140 is integrally rotatably attached to the output shaft 139. Above the drive pulley 140, a fan pulley 141 that rotates integrally with the cooling fan 29 is arranged.

[0110] As shown in FIGS. 32 and 33, the first transmission mechanism 137 includes a drive pulley 140, a first transmission pulley 142, a guide pulley 144, and a first belt 145. The first transmission pulley 142 is arranged on the rear upper oblique side of the fan pulley 141. The first transmission pulley 142 is attached to the right side (input shaft) of the compressor 135. The guide pulley 144 is arranged on the front upper oblique side of the fan pulley 141. The first belt 145 is formed in an endless shape and is wound around the drive pulley 140, the first transmission pulley 142, and the guide pulley 144. The power of the prime mover 23 is transmitted from the drive pulley 140 to the first transmission pulley 142 via the first belt 145. The compressor 135 is driven by the first transmission pulley 142.

[0111] As shown in FIGS. 32 and 33, the second transmission mechanism 138 includes a drive pulley 140, a fan pulley 141, a second transmission pulley 143, and a second belt 146. The second transmission pulley 143 is arranged on the rear side of the fan pulley 141. The second transmission pulley 143 is arranged with a displacement downward and rearward with respect to the first transmission pulley 142. Also, the second transmission pulley 143 is arranged with a displacement in the machine body width direction K2 (leftward) with respect to the first transmission pulley 142. The second transmission pulley 143 is attached to the right side (input shaft) of the alternator 136. The second belt 146 is formed in an endless shape and is wound around the drive pulley 140, the second transmission pulley 143, and the fan pulley 141. The power of the prime mover 23 is transmitted from the drive pulley 140 to the second transmission pulley 143 via the second belt 146. The alternator 136 is driven by the second transmission pulley 143.

[0112] The first transmission pulley 142 is a first drive unit to which power from the prime mover 23 is transmitted to drive the compressor (first driven machine) 135. The second transmission pulley 143 is a second drive unit to which power from the prime mover 23 is transmitted to drive the alternator (second driven machine) 136.

[0113] As shown in FIGS. 33 and 34, the first cover 130 covers the first transmission pulley (first drive unit) 142. The second cover 131 covers the second transmission pulley (second drive unit) 143. Since the first cover 130 is open toward the prime mover 23 side, it is not necessary to cover the entire rear of the compressor 135, and it can be formed compactly. Since the second cover 131 is open toward the prime mover 23 side, it is not necessary to cover the entire rear of the alternator 136, and it can be formed compactly.

[0114] As described above, the first transmission pulley (first drive unit) 142 and the second transmission pulley (second drive unit) 143 are arranged with a displacement in the vertical direction, the machine width direction K2, and the front-rear direction K1. When covering the cooling fan 29, the first transmission pulley 142, and the second transmission pulley 143 with a fan cover 129 formed of one member, the fan cover 129 is formed in a complex shape. By adopting a split structure in which the fan cover 129 is divided into a first cover 130 and a second cover 131, the shape of the fan cover 129 can be made simple without forming a complex shape, and the shape of the fan cover 129 can be simplified. Also, deterioration of the yield can be suppressed. Further, even if the object covered by the fan cover 129 extends over a wide range, it is possible to suppress the occurrence of deflection in the fan cover 129 due to vibration.

[0115] As shown in FIG. 34, the partition plate (plate member) 39 is attached to the support frame 31 such that the shroud 57 is inserted from the side opposite to the fan cover 129 with respect to the support frame 31 in a state where the shroud 57 and the like (the shroud 57 and the cooling system equipment unit 27) are assembled.

[0116] As shown in FIG. 37, the fan cover 129 has a tank attachment member 148 to which the reserve tank 147 is attached. The reserve tank 147 is a tank that stores the coolant for the radiator 25. As shown in FIGS. 37 and 38, the tank attachment member 148 is attached to the first cover 130. Specifically, the tank attachment member 148 has a stay 148a fixed to the rear wall portion 131c of the first cover 130 and a fixture 148b fixed to the stay 148a. As shown in FIG. 38, an engagement recess 147a into which the fixture 148b fits is formed in the reserve tank 147. The reserve tank 147 is attached to the tank attachment member 148 by moving it downward so that the fixture 148b fits into the engagement recess 147a from above.

[0117] As shown in FIG. 39, the fan cover 129 has an indicator attachment member 150 to which the indicator 149 is attached. The indicator 149 performs a display regarding the air cleaner 118. For example, the indicator 149 displays the degree of dust clogging in the air cleaner 118. The indicator 149 is attached to a hose 151 connected to a duct member 115 that sends purified air from the air cleaner 118 to the prime mover 23. The indicator 149 has an attachment member 152 that is fixed to the indicator attachment member 150 by bolts.

[0118] By giving the fan cover 129 (the first cover 130) the function of a bracket for attaching the reserve tank 147 and the indicator 149, the structure can be simplified. Also, the reserve tank 147 and the indicator 149 can function as a protection member for preventing an operator from accidentally touching the cooling fan 29 together with the fan cover 129. Further, by attaching the reserve tank 147 and the indicator 149 to the fan cover 129 attached to the support frame 31, the strength as the above protection member can be improved.

[0119] As shown in FIG. 37, a guide rod 152 is fixed to the first cover 130. The guide rod 152 protects a hose that is routed from the radiator 25 through above the intermediate wall portion 131b of the first cover 130 to the reserve tank 147 so that the hose does not contact the edge of the first cover 130.

[0120] A preferred embodiment of the present invention provides a working machine 1 described in the following items. (Item 1-1) A working machine 1 comprising: a machine body 2; a prime mover 23 mounted on the machine body 2; at least one cooling system device disposed laterally of the prime mover 23; a shroud 57 for guiding cooling air for cooling the cooling system device; a partition plate 39 partitioning a prime mover chamber 52 for housing the prime mover 23 and a disposition side 56 of the cooling system device, the partition plate 39 having an opening 59 through which the shroud 57 can be inserted and a mounting portion 58 for mounting the shroud 57 to the partition plate 39 with the shroud 57 inserted through the opening 59.

[0121] According to the working machine 1 according to this Item 1-1, by forming the opening 59 in the partition plate 39 partitioning the prime mover chamber 52 and the disposition side 56 of the cooling system device and mounting the shroud 57 to the partition plate 39 with the shroud 57 inserted through the opening 59, it is possible to reduce the occurrence of a gap around the shroud 57. (Item 1-2) The working machine 1 according to Item 1-1, further comprising: a base plate 15 constituting the bottom of the machine body 2; a bonnet 22 forming the prime mover chamber 52; and a support frame 31 for supporting the bonnet 22, the partition plate 39 having a main plate portion 60 including the opening 59 and attached to the support frame 31, and a lower wall portion 61 extending horizontally from a lower end of the main plate portion 60 and attached onto the base plate 15.

[0122] According to the working machine 1 related to this item 1-2, the partition plate 39 can partition the space between the prime mover chamber 52 above the base plate 15 and the arrangement side 56 of the cooling system equipment. (Item 1-3) The support frame 31 includes a structure 36 disposed between the prime mover 23 and the partition plate 39. The structure 36 has a front structure portion 40, a rear structure portion 41 disposed at an interval behind the front structure portion 40, and an upper structure portion 42 connecting the upper portions of the front structure portion 40 and the rear structure portion 41. The partition plate 39 is formed to cover the space between the base plate 15 and the upper structure portion 42 from the front structure portion 40 to the rear structure portion 41, for the working machine 1 described in item 1-2.

[0123] According to the working machine 1 related to this item 1-3, the prime mover chamber 52 and the arrangement side 56 of the cooling system equipment can be suitably partitioned by the partition plate 39. (Item 1-4) The opening 59 is formed so that the shroud 57 can be inserted from the arrangement side of the cooling system equipment toward the prime mover chamber 52 side. The mounting portion 58 is formed so that the shroud 57 can be mounted on the partition plate 39 from the arrangement side of the cooling system equipment with the shroud 57 inserted through the opening 59 from the arrangement side of the cooling system equipment toward the prime mover chamber 52 side, for the working machine 1 described in any one of items 1-1 to 1-3.

[0124] According to the working machine 1 related to this item 1-4, the shroud 57 can be attached to the partition plate 39 from the arrangement side of the cooling system equipment, that is, from the side opposite to the arrangement side of the prime mover 23, and the attachment of the shroud 57 to the partition plate 39 can be easily performed. (Item 1-5) The cooling system equipment is assembled to the partition plate 39 from the arrangement side of the cooling system equipment with the shroud 57 attached to the partition plate 39, for the working machine 1 described in any one of items 1-1 to 1-4.

[0125] According to the working machine 1 according to items 1-5, when assembling the cooling system equipment to the partition plate 39, the assembly of the cooling system equipment to the partition plate 39 can be easily performed. (Item 1-6) At least a part of the assembled body 112 in which the shroud 57 and the cooling system equipment are assembled to the partition plate 39 is provided with lifting tools 89, 98 for integrally lifting the assembled body 112. The working machine 1 according to any one of items 1-1 to 1-5.

[0126] According to the working machine 1 according to item 1-6, the assembled body 112 in which the shroud 57 and the cooling system equipment are assembled to the partition plate 39 can be easily assembled to the machine body 2. (Item 1-7) The shroud 57 has a covering portion 57a that covers the periphery of the cooling fan 29 that generates the cooling air, an intake port portion 57b that is provided at an interval from the covering portion 57a and takes in the cooling air into the shroud 57, and a wind guiding portion 57c that guides the cooling air from the intake port portion 57b to the covering portion 57a. The covering portion 57a and the wind guiding portion 57c are inserted through the opening 59 from the side opposite to the prime mover 23 and attached to the partition plate 39. The working machine 1 according to any one of items 1-1 to 1-6.

[0127] According to the working machine 1 according to item 1-7, it is possible to easily access the shroud 57 from the side opposite to the prime mover 23. (Item 1-8) The mounting portion 58 is provided around the opening 59. The shroud 57 has a mounting wall portion 57d that protrudes from the intake port portion 57b and is formed along the edge of the opening 59. The mounting wall portion 57d abuts against the periphery of the opening 59 in the partition plate 39 from the side opposite to the prime mover 23 and is attached to the mounting portion 58 from the opposite side. The working machine 1 according to item 1-7.

[0128] According to the working machine 1 according to item 1-8, it is possible to preferably reduce the generation of a gap around the shroud 57.​ (Item 1-9) A plurality of the cooling system devices are provided, and the plurality of cooling system devices are assembled to any one of Items 1-1 to 1-8 of the working machine 1 described in any one of Items 1-1 to 1-8 assembled to the partition plate 39.

[0129] According to the working machine 1 according to this Item 1-9, it can be mounted on the machine body 2 in a state where the shroud 57 and a plurality of cooling system devices are assembled to the partition plate 39. (Item 1-10) The working machine 1 according to any one of Items 1-1 to 1-9, comprising a routing member 115 routed through the partition plate 39, the partition plate 39 having an opening 113 for passing the routing member 115 therethrough and a closing structure 120 for closing the opening 113 with the routing member 115 passed through the opening 113, the closing structure 120 having a plurality of seal members 121A, 121B that are in close contact with each other to seal.

[0130] According to the working machine 1 according to this Item 1-10, the opening 113 for passing the routing member 115 can be suitably closed. (Item 1-11) The working machine 1 according to Item 1-10, wherein the plurality of seal members 121A, 121B are in close contact with each other in a direction along the plate surface of the partition plate 39.

[0131] According to the working machine 1 according to this Item 1-11, the width of the closing structure 120 can be reduced.

[0132] Further, the present embodiment provides a working machine 1 described in the following items. (Item 2-1) A working machine 1 comprising a machine body 2, a prime mover 23 mounted on the machine body 2, a cooling fan 29 disposed on the side of the prime mover 23, and a fan cover 129 covering the cooling fan 29, the fan cover 129 being configured to have a first cover 130 and a second cover 131 formed separately from the first cover 130 and disposed below the first cover 130.

[0133] According to the working machine 1 related to this item 2-1, by making the fan cover 129 have a split structure having a first cover 130 and a second cover 131, it is possible to suppress the occurrence of deflection in the fan cover 129 due to vibration. (Item 2-2) A first driven machine (compressor 135) and a second driven machine (alternator 136) which are arranged on the arrangement side of the cooling fan 29 in the prime mover 23 and are driven by the power of the prime mover 23 are provided, the first cover 130 is arranged at a position covering the first driven machine 135, and the second cover 131 is arranged at a position covering the second driven machine 136. The working machine 1 according to item 2-1.

[0134] According to the working machine 1 related to this item 2-2, since the first driven machine 135 and the second driven machine 136 can be individually covered, simplification of the shape of the fan cover 129 can be achieved. (Item 2-3) A first drive unit (first transmission pulley 142) for transmitting the power from the prime mover 23 to drive the first driven machine 135 and a second drive unit (second transmission pulley 143) for transmitting the power from the prime mover 23 to drive the second driven machine 136 are provided, the first cover 130 covers the first drive unit 142, and the second cover 131 covers the second drive unit 142. The working machine 1 according to item 2-2.

[0135] According to the working machine 1 related to this item 2-3, the fan cover 129 covering the cooling fan 29 can cover the first drive unit for driving the first driven machine and the second drive unit for driving the second driven machine. (Item 2-4) The first drive unit and the second drive unit are arranged with a displacement in the vertical direction, the machine body width direction K2, and the front-rear direction K1. The working machine 1 according to item 2-3.

[0136] According to the working machine 1 related to this item 2-4, since the fan cover 129 has a split structure having the first cover 130 and the second cover 131, even if the covered part by the fan cover 129 is displaced in the vertical direction, the machine body width direction K2, and the longitudinal direction K1, it can suitably cover the covered object. (Item 2-5) The working machine 1 according to any one of Items 2-1 to 2-4, wherein the first cover 130 and the second cover 131 are formed in an open shape toward the prime mover 23 side.

[0137] According to the working machine 1 related to this item 2-5, it is not necessary to cover the entire first driven machine and the second driven machine, and the first cover 130 and the second cover 131 can be formed compactly. (Item 2-6) The working machine 1 according to any one of Items 2-1 to 2-5, comprising a bonnet 22 forming a prime mover chamber 52 for housing the prime mover 23, and a support frame 31 for supporting the bonnet 22, wherein the first cover 130 and the second cover 131 are attached to the support frame 31.

[0138] According to the working machine 1 related to this item 2-6, the fan cover 129 (the first cover 130, the second cover 131) can be firmly supported. (Item 2-7) The working machine 1 according to Item 2-6, wherein the support frame 31 has a leg body 45 including a first part 45a located behind the cooling fan 29 and a second part 45b extending forward from the upper part of the first part 45a, the first cover 130 is attached to the upper part of the first part 45a and the second part 45b, and the second cover 131 is attached to the lower part of the first part 45a.

[0139] Also according to the working machine 1 related to this item 2-7, the fan cover 129 (the first cover 130, the second cover 131) can be firmly supported. (Item 2-8) A bonnet 22 that forms a prime mover chamber 52 for housing the prime mover 23, a support frame 31 that supports the bonnet 22, a shroud 57 that guides the cooling air generated by the cooling fan 29, and a plate member (partition plate 39) to which the shroud 57 is assembled. The fan cover 129 is attached to the support frame 31, and the plate member 39 is attached to the support frame 31 from the side opposite to the fan cover 129 with the shroud 57 assembled so that the shroud 57 can be inserted. The working machine 1 according to any one of Items 2-1 to 2-7, wherein the shroud 57 is inserted into the support frame 31 in a state where the shroud 57 is assembled.

[0140] According to the working machine 1 according to this Item 2-8, the plate member 39 and the shroud 57 can be attached well. (Item 2-9) The working machine 1 according to any one of Items 2-1 to 2-8, further comprising a reserve tank 147 for storing a liquid, wherein the fan cover 129 has a tank attachment member 148 to which the reserve tank 147 is attached.

[0141] According to the working machine 1 according to this Item 2-9, by giving the fan cover 129 a function as a bracket for attaching the reserve tank 147, the structure can be simplified. (Item 2-10) The working machine 1 according to any one of Items 2-1 to 2-9, further comprising an air cleaner 118 for purifying the air supplied to the prime mover 23 and an indicator 149 for indicating information related to the air cleaner 118, wherein the fan cover 129 has an indicator attachment member 150 to which the indicator 149 is attached.

[0142] According to the working machine 1 according to this Item 2-10, by giving the fan cover 129 a function as a bracket for attaching the indicator 149, the structure can be simplified.

[0143] As described above, one embodiment of the present invention has been explained. However, it should be considered that all the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims are included.

Explanation of Signs

[0144] 1 Working machine 2 Machine body 22 Bonnet 23 Prime mover 29 Cooling fan 31 Support frame 39 Plate member (partition plate) 45 Leg 45a First part 45b Second part 52 Prime mover room 57 Shroud 118 Air cleaner 129 Fan cover 130 First cover 131 Second cover 135 First driven machine (compressor) 136 Second driven machine (alternator) 142 First drive part (first transmission pulley) 143 Second drive part (second transmission pulley) 147 Reserve tank 148 Tank mounting member 149 Indicator 150 Indicator mounting member K1 Front - rear direction K2 Machine body width direction

Claims

1. An airframe, a prime mover mounted on the airframe, a cooling fan disposed on a side of the prime mover, and a fan cover covering the cooling fan, wherein the fan cover includes a first cover and a second cover formed separately from the first cover and disposed below the first cover, and is configured as a working machine.

2. A first driven machine and a second driven machine disposed on a side of the prime mover where the cooling fan is disposed and driven by the power of the prime mover, wherein the first cover is disposed at a position covering the first driven machine, and the second cover is disposed at a position covering the second driven machine. The working machine according to claim 1.

3. A first drive unit configured to transmit power from the prime mover to drive the first driven machine, and a second drive unit configured to transmit power from the prime mover to drive the second driven machine, wherein the first cover covers the first drive unit, and the second cover covers the second drive unit. The working machine according to claim 2.

4. The first drive unit and the second drive unit are disposed with a displacement in the vertical direction, the machine width direction, and the front-rear direction. The working machine according to claim 3.

5. The first cover and the second cover are formed to be open toward the prime mover side. The working machine according to any one of claims 1 to 4.

6. A bonnet forming a prime mover chamber for housing the prime mover, and a support frame for supporting the bonnet, wherein the first cover and the second cover are attached to the support frame. The working machine according to any one of claims 1 to 4.

7. The support frame has a leg portion including a first portion located behind the cooling fan and a second portion extending forward from an upper portion of the first portion, wherein the first cover is attached to an upper portion of the first portion and the second portion, and the second cover is attached to a lower portion of the first portion. The working machine according to claim 6.

8. A bonnet forming a prime mover chamber for housing the prime mover, a support frame for supporting the bonnet, a shroud for guiding cooling air generated by the cooling fan, and a plate member to which the shroud is assembled, wherein the fan cover is attached to the support frame, The work machine according to any one of claims 1 to 4, wherein the plate member is attached to the support frame such that the shroud is inserted from the side opposite to the fan cover with respect to the support frame in a state where the shroud is assembled.

9. comprising a reserve tank for storing a liquid, The work machine according to any one of claims 1 to 4, wherein the fan cover has a tank attachment member to which the reserve tank is attached.

10. an air cleaner for purifying the air supplied to the prime mover, an indicator for indicating information regarding the air cleaner, and The work machine according to any one of claims 1 to 4, wherein the fan cover has an indicator attachment member to which the indicator is attached.

Images