JP2017226286A - Working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working machine which facilitates assembly of an accelerator device.SOLUTION: A working machine includes: a machine body: a driver seat provided at the machine body; an attachment part provided in front of and below the driver seat; and an accelerator device attached to the attachment part. The accelerator device includes: an accelerator bracket attached to the attachment part; an accelerator pedal swingably supported by the accelerator bracket; a detection device which detects operation quantity of the accelerator pedal and is supported by the accelerator bracket; a link mechanism which links the accelerator pedal to the detection device; and a storage cover which stores the detection device and the link mechanism and is attached to the accelerator bracket.SELECTED DRAWING: Figure 42

Description

  The present invention relates to a work machine such as a wheel loader, a skid steer loader, or a compact truck loader.

Conventionally, a technique disclosed in Patent Document 1 is known as an accelerator device.
The accelerator device disclosed in Patent Document 1 links an accelerator pedal, an accelerator bracket, a pivotal support portion that pivots the accelerator pedal, a detection device that detects an operation amount of the accelerator pedal, and an accelerator pedal and the detection device. And an interlocking mechanism.
The accelerator pedal is pivotally supported by a pivotal support provided on the floor of the vehicle. The accelerator bracket is attached to an attachment portion provided below the floor. The detection device is attached to the accelerator bracket.

Japanese Patent Laid-Open No. 9-20154

In the prior art, the accelerator pedal is attached to the floor, and the accelerator bracket is attached to an attachment portion below the floor. Therefore, the assembly of the accelerator pedal, the accelerator bracket, and the interlocking mechanism is complicated and troublesome.
Then, an object of this invention is to provide the working machine which aimed at the easy assembly | attachment of an accelerator apparatus.

The technical means taken by the present invention to solve the technical problems are characterized by the following points.
The work machine of the present invention includes a fuselage, a driver seat provided in the fuselage, an attachment portion provided in front of and below the driver seat, and an accelerator device attached to the attachment portion. The accelerator device is an accelerator bracket attached to the attachment portion, an accelerator pedal supported by the accelerator bracket, and a detection device that detects an operation amount of the accelerator pedal, the detection being supported by the accelerator bracket. And a housing cover for housing the detecting device and the interlocking mechanism, the housing cover being attached to the accelerator bracket.

In addition, the accelerator bracket has a pivot portion that pivotally pivots a lower portion of the accelerator pedal,
The interlocking mechanism includes a first link connected to the detection device, and a second link connecting the upper portion of the accelerator pedal and the first link.
The work implement includes a stopper that swings together with the first link, and the accelerator bracket includes a restricting portion that restricts the first link when the stopper contacts with the accelerator pedal being released. Have.

The first link may also serve as a stopper portion.
The second link is disposed on the side opposite to the tread of the accelerator pedal and is covered by the accelerator pedal.
The accelerator bracket includes a fixing portion that is attached to the attachment portion and is provided outside the housing cover.

According to the present invention, the accelerator device can be attached to the attachment portion in a state where the accelerator pedal, the detection device, the interlocking mechanism, and the housing cover are assembled to the accelerator bracket. As a result, the accelerator device can be easily assembled.
The accelerator bracket has a pivotally supporting portion pivotably supporting the lower portion of the accelerator pedal, and the interlock mechanism connects the first link connected to the detection device, and the first link connecting the accelerator pedal and the first link. By having two links, the structure can be simplified.

The first link is regulated by the stopper portion that swings together with the first link coming into contact with the regulating portion, whereby the accelerator pedal can be regulated in a state where the depression of the accelerator pedal is released.
Since the first link also serves as the stopper portion, the member can be shared.

Since the second link is disposed on the side opposite to the tread surface of the accelerator pedal and is covered with the accelerator pedal, the second link can be prevented from being stepped on.
The accelerator bracket is a fixed portion that is attached to the attachment portion, and has a fixed portion provided outside the accommodation cover, so that the accelerator device can be detached from the attachment portion without removing the accommodation cover. Further, if only the wiring of the detection device including the detection device is removed, the accelerator device that operates independently and mechanically can be removed.

It is the schematic which shows the whole working machine side. It is the schematic which shows the whole work machine plane. It is a side view which shows the rear part of a working machine. It is a perspective view of an airframe. It is a perspective view of the rear part of an airframe. It is a perspective view of a rear frame. It is a side view of the upper part of an airframe. It is a disassembled perspective view of a cover member and a bonnet. It is a back sectional view of the upper part of an airframe. It is a right view of the rear part of a working machine. It is the perspective view which looked at the right side cover from the lower part. It is the perspective view which looked at the right side cover from the upper part. It is the perspective view which looked at the 2nd cover board from the lower part. It is the perspective view which looked at the 2nd cover board from the upper part. It is side surface sectional drawing which shows the inside of a right fender. It is a back sectional view showing the inside of a right fender. It is back sectional drawing which shows the arrangement of a heater hose. It is side surface sectional drawing which shows the arrangement | positioning of a heater hose. It is the perspective view which looked at the cooling unit from the front. It is the perspective view which looked at the cooling unit from the back. It is the perspective view which looked at the shroud from the back. It is side surface sectional drawing of a shroud. It is a disassembled perspective view of a shroud. It is the perspective view which looked at the shroud from the front. It is a perspective view of a 1st dustproof net. It is a side view which shows the attachment state of a DOC apparatus. It is a perspective view of a DOC apparatus. It is a perspective view by the side of the air supply of a DOC apparatus. It is a disassembled perspective view of the connection part of an air supply part and an exhaust pipe. It is a perspective view of a fixed bracket and a support bracket. It is a side view of a fixed bracket and a support bracket. It is a top view of a fixed bracket and a support bracket. It is a rear view of a fixed bracket and a support bracket. It is a rear surface sectional view of the attachment part of a fuel filter. It is a perspective view of the operation system of a 2nd operation lever. It is a side view of the operation system of a 2nd operation lever. It is a rear view of the operation system of a 2nd operation lever. It is a perspective view, such as a 1st arm and a mounting arm. It is a perspective view around the lower part of a cockpit. It is a perspective view of an accelerator device. It is a perspective view of the inside of an accelerator apparatus. It is a side view inside the accelerator apparatus. It is a front view of the inside of an accelerator apparatus. It is a side view of a machine body front part. It is a perspective view of the hydraulic piping system of a steering. It is side surface sectional drawing of the middle part of the hydraulic piping system of a steering. It is a back sectional view of the middle part of the hydraulic piping system of a steering. It is a perspective view of a front frame. It is the figure which looked at the front frame from the front. It is side surface sectional drawing of a capacitor | condenser unit. It is a perspective view of a capacitor | condenser frame. It is a top view of a capacitor | condenser frame. It is the figure which looked at attachment of a capacitor fan from the bottom. It is a perspective view of a capacitor | condenser frame. It is a perspective view of a 2nd dustproof net and a capacitor frame. It is a perspective view of a capacitor and a capacitor frame. It is side surface sectional drawing of a roof. It is a top view in a roof. It is the perspective view which looked at the inner roof from the bottom. It is a side view of the state which attached the backhoe to the rear part of a working machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing an entire side surface of a working machine 1 in which the present invention is employed. FIG. 2 is a schematic view illustrating the entire plane of the work machine 1. In the present embodiment, a wheel loader is illustrated as the work machine 1. The wheel loader 1 is an articulated working machine.
As shown in FIGS. 1 and 2, the wheel loader 1 includes a machine body 2, a front frame (frame member) 3, a cabin 4, a traveling device 5, and a work device 6.

The cabin 4 is mounted on the airframe 2. A driver's seat 7 is provided in the cabin 4. The cabin 4 has a roof 30 that covers the upper side of the driver's seat 7. The cabin 4 has an entrance door 31 on the side surface, and a hatchback type rear door 32 that can swing up and down on the back surface.
In the embodiment of the present invention, the front side of the driver seated in the driver's seat 7 (direction of arrow A1 in FIGS. 1 and 2) is the front side, and the rear side of the driver (direction of arrow A2 in FIGS. 1 and 2) is the front side. The description will be made with the left side of the driver (in the direction of arrow B1 in FIG. 2) as the left side and the right side of the driver (in the direction of arrow B2 in FIG. 2) as the right side.

  The horizontal direction, which is the direction orthogonal to the front and rear of the body 2 (wheel loader 1), will be described as the body width direction. The direction from the center part of the airframe 2 to the right part or the left part will be described as the outside of the airframe. In other words, the outward direction of the airframe refers to the direction away from the airframe 2 in the width direction of the airframe. The direction opposite to the outside of the aircraft will be described as the inside of the aircraft. In other words, the in-machine direction is the direction of the body width and the direction approaching the body 2.

As shown in FIGS. 1 and 2, the traveling device 5 is provided on the side of the body 2. As the traveling device 5, a wheel-type traveling device 5 having a plurality of front wheels 8L, 8R and a plurality of rear wheels 9L, 9R is employed. The plurality of front wheels 8 are provided on the front frame 3. The plurality of front wheels 8L, 8R include a left front wheel 8L and a right front wheel 8R. The left front wheel 8L is provided on the left side of the front frame 3. The right front wheel 8R is provided on the right side of the front frame 3. A plurality of rear wheels 9L, 9R are provided on the body 2. The plurality of rear wheels 9L, 9R include a left rear wheel 9L and a right rear wheel 9R. The left rear wheel 9 </ b> L is provided on the left side of the body 2. The right rear wheel 9 </ b> R is provided on the right side of the airframe 2. The traveling device 5 (rear wheels 9L, 9R) is driven by an HST (hydrostatic transmission) mounted on the wheel loader 1.

A connecting body 10 is provided on the front end side of the machine body 2 so as to be rotatable about a longitudinal axis. A rear end side of the front frame 3 is rotatably connected to the connecting body 10 by a connecting pin 11. The connecting pin 11 has a vertical axis. Accordingly, the front frame 3 can swing left and right with respect to the body 2.
A steering cylinder 12 is provided across the connecting body 10 (airframe 2) and the front frame 3. The steering cylinder 12 is a double-acting hydraulic cylinder. By extending and retracting the steering cylinder 12, the front frame 3 swings left or right with respect to the body 2. As a result, the wheel loader 1 can turn left or right.

  The working device 6 is provided on the front frame 3. The work device 6 includes a left lift arm 13L, a right lift arm 13R, and a bucket 14. The base end side (rear end side) of the left lift arm 13L is pivotally supported on the upper part of the rear portion on the left side of the front frame 3. The base end side (rear end side) of the right lift arm 13 </ b> R is pivotally supported on the upper part of the rear portion on the right side of the front frame 3. The bucket 14 is connected to the front end side (front end side) of the left lift arm 13L and the right lift arm 13R so as to be swingable about the axis in the body width direction.

  The left lift arm 13L is driven by the left lift cylinder 15L. The right lift arm 13R is driven by the right lift cylinder 15R. The bucket 14 is driven by a bucket cylinder (work implement cylinder) 16. The lift cylinders 15L and 15R and the bucket cylinder 16 are constituted by double-acting hydraulic cylinders. By extending the left lift cylinder 15L and the right lift cylinder 15R, the left lift arm 13L and the right lift arm 13R swing up and down. By expanding and contracting the bucket cylinder 16, the bucket 14 performs a squeeze operation or a dump operation.

The bucket 14 is detachably attached to the lift arms 13L and 13R. Instead of the bucket 14, an attachment such as a sweeper or mower can be attached to the tip side of the lift arm.
As shown in FIG. 2, the front frame 3 is provided with a capacitor unit 17 having an air conditioner capacitor 354.

  As shown in FIG. 3, a cover member 18 is provided on the upper part of the rear part of the machine body 2. A bonnet (cover) 19 is provided above the cover member 18. A driver's seat 7 is provided above the bonnet 19. In other words, the driver's seat 7 is provided in the airframe 2. The bonnet 19 supports the driver's seat 7. A step (floor board) 20 is provided in front of the driver's seat 7 and in front of the airframe 2. A control device 21 is provided in front of step 20. The steering device 21 includes a steering 22, a column 23, a steering valve 24, a column cover 25, and the like. The column 23 is a member that supports the steering 22. The steering valve 24 is a member that controls the steering cylinder 12 and is operated by the steering 22. The column cover 25 is a cover that covers the column 23, the steering valve 24, and the like. The column cover 25 is divided into a first column cover 25a, a second column cover 25b, and a third column cover 25c. Assembling is improved by dividing the column cover 25.

A first control device 26 is provided in the column cover 25. A second control device 27 is provided in the front part of the machine body 2. The first control device 26 is a control device that performs control related to the work and the like of the wheel loader 1. The second control device 27 is a control device that controls the engine 28.
In addition, a notification buzzer 427 for notifying that the fuel has run out is provided in the upper part of the column cover 25.

A connection member 29 is provided on the left side of the lower portion of the control device 21. This connecting member 29
Is a connection member 29 for accessing an in-vehicle network such as a CAN (Controller Area Network) equipped in the wheel loader 1.
An accelerator device 33 that increases or decreases the vehicle speed of the wheel loader 1 is provided on the right side of the control device 21. A plurality of operation members 34 and 35 are provided on the side (right side) of the driver's seat 7. The plurality of operation members 34 and 35 include a first operation lever 34 and a second operation lever 35. The first operation lever 34 is a lever that operates the lift cylinders 15L and 15R and the bucket cylinder 16. The second operation lever 35 is a lever that operates an attachment attached instead of the bucket 14, and is a lever that operates a hydraulic actuator provided in the attachment.

  A weight 36 is attached to the lower part of the rear part of the machine body 2 (the back surface of the rear wall 54 shown in FIG. 4). A fuel tank 37 that stores fuel for the engine 28 is provided on the left side of the front portion of the machine body 2. In the airframe 2, an engine (prime mover) 28, a cooling fan 38, a cooling unit 39, a purification device 40, an air cleaner 41, a starter (cell motor) 42, a fuel filter 43, and the like are provided.

  The engine 28 is constituted by a diesel engine provided with a common rail fuel injection device. The engine 28 is a driving force generation source for driving the HST pump 44, the main pump 45, and the pilot pump (charge pump) 46. The HST pump 44 is a variable displacement hydraulic pump that forms part of the HST. The main pump 45 is a hydraulic pump that generates hydraulic pressure for the actuator. The pilot pump 46 is a hydraulic pump that is used for supplying pilot oil and also a hydraulic pump that supplies charge oil to the HST.

  The engine 28 is located in the middle part before and after the airframe 2. The HST pump 44, the main pump 45, and the pilot pump 46 are provided at the front portion of the engine 28. The cooling fan 38 is supported by the rear portion of the engine 28 and is driven by the engine 28. The cooling fan 38 sucks air from the rear side of the airframe 2 and blows it forward. A cooling unit 39 is provided behind the cooling fan 38. The cooling unit 39 is a unit having equipment cooled by the cooling fan 38, and includes a shroud 47, an intercooler (cooler) 48, a radiator 49, and an oil cooler 50. The shroud 47 is a member that covers the cooling fan 38 and surrounds the space between the cooling fan 38 and the radiator 49. The intercooler 48 is a cooler that cools the compressed air supplied from the supercharger to the engine 28. The intercooler 48 is located in the shroud 47 and behind the cooling fan 38. The radiator 49 is a cooler that cools the cooling water of the engine 28, and is provided behind the shroud 47. The oil cooler 50 is a cooler that cools the hydraulic oil, and is provided behind the radiator 49. The purification device 40 is a device that purifies the exhaust gas of the engine 28. In the present embodiment, the purification device 40 is configured by a diesel engine oxidation catalyst device (referred to as a DOC device) that performs catalytic combustion of unburned fuel mixed in exhaust gas exhausted from the engine 28 using an oxidation catalyst (DOC: Diesel Oxidation Catalyst). Has been. The DOC device 40 is provided behind the lower portion of the engine 28 and below the cooling unit 39 (the shroud 47). The air cleaner 41 is a member that removes foreign matters such as dust and dirt contained in the air sucked into the engine 28. The air cleaner 41 is provided on the upper left side of the engine 28. The starter 42 is a motor that starts the engine 28. The starter 42 is provided at the lower part on the left side of the engine 28. The fuel filter 43 is a filter for fuel of the engine 28. The fuel filter 43 is provided on the upper left side of the rear portion of the engine 28.

  As shown in FIG. 4, the airframe 2 includes a first side wall 51, a second side wall 52, a front connecting member 53, and a rear wall 54. The 1st side wall 51 and the 2nd side wall 52 are formed of the board | plate material arrange | positioned so that a plate | board surface may face the body width direction. The second side wall 52 is provided at an interval to the right of the first side wall 51 (in the body width direction). The front connecting member 53 connects the lower portions of the front portions of the first side wall 51 and the second side wall 52. The rear wall 54 is formed of a plate material arranged so that the plate surface faces front and rear. The rear wall 54 connects the rear ends of the first side wall 51 and the second side wall 52.

  As shown in FIGS. 4 and 5, a first cabin bracket 55 that supports the rear left side of the cabin 4 is provided at the rear of the first side wall 51. The first cabin bracket 55 has a leg portion 55a and a mounting plate 55b. The lower end of the leg portion 55 a is fixed to the outer surface of the first side wall 51, and protrudes upward from the first side wall 51. The mounting plate 55b is fixed to the upper end of the leg portion 55a. The rear part of the cabin 4 is attached to the attachment plate 55b.

  A second cabin bracket 56 that supports the right side of the rear portion of the cabin 4 is provided at the rear portion of the second side wall 52. Similar to the first cabin bracket 55, the second cabin bracket 56 includes a leg portion 56a and a mounting plate 56b. The leg portion 56 a of the second cabin bracket 55 has a lower end fixed to the outer surface of the second side wall 52 and protrudes upward from the second side wall 52. The mounting plate 56b of the second cabin bracket 56 is fixed to the upper end of the leg portion 56a. The rear part of the cabin 4 is attached to the attachment plate 56b.

  A first support plate 57 is provided in front of the first cabin bracket 55. The right end of the first support plate 57 is fixed to the upper end of the first side wall 51, and protrudes outward from the first side wall 51. A second support plate 58 is provided in front of the second cabin bracket 56. The left end of the second support plate 58 is fixed to the upper end of the second side wall 52 and projects outward from the second side wall 52. A third support plate 59 is provided in front of the first support plate 57. The left end of the third support plate 59 is fixed to the upper end of the first side wall 51 and protrudes from the first side wall 51 toward the inside of the machine body. A fourth support plate 60 is provided in front of the second support plate 58. The right end of the fourth support plate 60 is fixed to the upper end of the second side wall 52 and protrudes from the second side wall 52 toward the inside of the aircraft.

As shown in FIG. 5, a notch (referred to as a first notch) 61 is provided on the upper portion of the rear wall 54. The first notch 61 has a lower edge 61a, a left edge 61b, and a right edge 61c, and is open upward.
A rear frame 62 is provided at the rear of the machine body 2. The rear frame 62 is a member that connects the upper portions of the rear part of the first side wall 51 and the rear part of the second side wall 52. The rear frame 62 is detachable from the first side wall 51 and the second side wall 52. The rear frame 62 includes a first bracket 63, a second bracket 64, and a connection frame 65. The first bracket 63, the second bracket 64, and the connection frame 65 are formed of sheet metal. The first bracket 63 is provided at the upper part of the rear portion of the first side wall 51. The second bracket 64 is provided at the upper part of the rear portion of the second side wall 52. The connection frame 65 connects the first bracket 63 and the second bracket 64.

  As shown in FIG. 6, the first bracket 63 includes a lower wall 63a, a vertical wall 63b, and an upper wall 63c. The lower wall 63a extends forward from the lower end of the vertical wall 63b. As shown in FIG. 5, the lower wall 63 a has a right end fixed to the upper end of the first side wall 51 and a front end fixed to the leg portion 55 a of the first cabin bracket 55. The upper wall 62c extends rearward from the upper end of the vertical wall 63b.

  As shown in FIG. 6, the second bracket 64 has a lower wall 64a, a vertical wall 64b, and an upper wall 64c, like the first bracket 63. The lower wall 64a extends forward from the lower end of the vertical wall 64b. As shown in FIG. 5, the lower wall 64 a of the second bracket 64 has a left end fixed to the upper end of the second side wall 52 and a front end fixed to the leg portion 56 a of the second cabin bracket 56. The upper wall 64c of the second bracket 64 extends rearward from the upper end of the vertical wall 64b.

  As shown in FIG. 6, the connection frame 65 has an upper wall 65a and an extending wall 65b. The extending wall 65b extends downward from the rear end of the upper wall 65a. The upper wall 65a of the connection frame 65 integrally includes a plurality of attachment portions 66 to 69. The plurality of attachment portions 66 to 69 include a first attachment portion 66, a second attachment portion 67, a third attachment portion 68, and a fourth attachment portion 69. A left portion of the upper wall 65a of the connection frame 65 is a first attachment portion 66, and a right portion of the upper wall 65a is a second attachment portion 67. The third attachment portion 68 is provided on the center side of the upper wall 65 a of the connection frame 65. The fourth attachment portion 69 is provided on the center side of the upper wall 65 a of the connection frame 65 and on the right side of the third attachment portion 68. The first attachment portion 66, the second attachment portion 67, the third attachment portion 68, and the fourth attachment portion 69 are formed with insertion holes through which bolts are inserted.

The first attachment portion 66 is detachably fixed to the upper wall 63c of the first bracket 63 with a bolt. The second mounting portion 67 is detachably fixed to the upper wall 64c of the second bracket 64 with a bolt. Thereby, the connection frame 65 is fixed to the first bracket 63 and the second bracket 64 so as to be removable.
The engine 28, the cooling fan 38, the shroud 47, the intercooler 48, the radiator 49, the oil cooler 50, the purification device 40, the air cleaner 41, and the starter 42 are provided between the first side wall 51 and the second side wall 52. As shown in FIG. 7, the upper parts of the engine 28, the shroud 47, the radiator 49, and the oil cooler 50 protrude upward from the airframe 2. The radiator 49 and the oil cooler 50 are located near the front of the rear wall 54. The rear frame 62 is located behind the engine 28, the radiator 49, and the oil cooler 50.

  The engine 28 is assembled to the airframe 2 from above the airframe 2 with the bonnet 19 and the cover member 18 removed. When inspecting members (equipment) inside the machine body 2 such as the engine 28, the shroud 47, the intercooler 48, the radiator 49, and the oil cooler 50, the bonnet 19 is opened. The bonnet 19 opens and closes by opening the rear door 32 of the cabin 4 (see FIG. 2).

The connecting frame 65 is removed from the first bracket 63 and the second bracket 64 when mounting components to be mounted on the body 2 such as the engine 28 are mounted (assembled) on the body 2 or when maintenance of the mounted components is performed. As a result, the connecting frame 65 does not become an obstacle, and the assembly (mounting) of the engine 28 and the maintenance of the mounted components can be easily performed.
Further, when a support member that supports members around the rear frame is attached to the rear frame, it is troublesome if the support member must be removed together when the rear frame is removed. However, in the present embodiment, the rear frame 62 connects the first bracket 63, the second bracket 64, the first bracket 63 and the second bracket 64, and with respect to the first bracket 63 and the second bracket 64. And a detachable connecting frame 65. Therefore, it is convenient to attach only the connecting frame 65 to the first bracket 63 and the second bracket 64 by attaching support members for supporting the members around the rear frame during maintenance.

  As shown in FIG. 4, a plurality of stays 71 and 72 are provided on the upper wall 65 a of the connection frame 65. The plurality of stays include a first stay 71 and a second stay 72. The first stay 71 and the second stay 72 project forward from the connection frame 65. A first radiator bracket 73 that supports the left side of the radiator 49 is fixed to the front side of the first bracket 63. A second radiator bracket 74 that supports the right side of the radiator 49 is fixed to the front surface side of the second bracket 64.

  As shown in FIG. 4, a plurality of mount brackets 76 and 77 are fixed inside the second side wall 52. The plurality of mount brackets 76 and 77 include a front mount bracket 76 and a rear mount bracket 77 positioned behind the front mount bracket 76. The front mounting bracket 76 and the rear mounting bracket 77 are similarly provided on the inner side of the first side wall 51. The engine 28 is supported by the front mount bracket 76 and the rear mount bracket 77 via a mount member (vibration isolation member).

As shown in FIG. 5, a back buzzer 78 for notifying the backward movement of the wheel loader 1 is provided on the right side of the connection frame 65.
As shown in FIGS. 3 and 4, the first side wall 51 is provided with an inspection window 79 that is an opening formed by an annular edge, and a cover plate 80 that closes the inspection window 79. The inspection window 79 is formed on the side (left side) of the starter 42 (formed at a portion corresponding to the starter 42). The lid plate 80 closes the inspection window 79 from the outside of the machine body 2. The lid plate 80 is detachably attached to the first side wall 51 with screws. The starter 42 can be inspected from the outside of the machine body 2 by removing the cover plate 80.

As shown in FIG. 8, the cover member 18 includes a left side cover 81L, a right side cover 81R, and a rear cover 83. The left side cover 81L and the right side cover 81R are juxtaposed at intervals in the body width direction. The rear cover 83 connects the rear ends of the left side cover 81L and the right side cover 81R. A space between the left side cover 81L and the right side cover 81R is open upward and forward.

  As shown in FIG. 9, the left side cover 81 </ b> L is attached to the first support plate 57. Therefore, the left side cover 81L covers the upper left side of the engine 28, the shroud 47, the radiator 49, and the oil cooler 50. The right side cover 81R is attached to the second support plate 58. Accordingly, the right side cover 81R covers the upper right side of the engine 28, the shroud 47, the radiator 49, and the oil cooler 50.

  As shown in FIGS. 8 and 9, below the left side cover 81L, a cover plate (referred to as a first cover plate) covers the lower side of the left side cover 81L and covers the upper side of the left rear wheel 9L (traveling device 5). 84L is provided. The left side cover 81L and the first cover plate 84L constitute a left fender 85L. Further, below the right side cover 81R, a cover plate (referred to as a second cover plate) 84R that covers the lower side of the right side cover 81R and covers the upper side of the right rear wheel 9R (traveling device 5) is provided. The right side cover 81R and the second cover plate 84R constitute a right fender 85R.

  As shown in FIG. 7, the rear cover 83 includes an upper surface wall 83a, an extending wall 83b, and a lower surface wall 83c. The upper surface wall 83a is attached to the first attachment portion 66, the second attachment portion 67, the third attachment portion 68, and the fourth attachment portion 69 of the connection frame 65 with bolts. Therefore, the connection frame 65 (rear frame 62) also has a function as a bracket for attaching the rear cover 83. By forming the connecting frame 65 from a sheet metal and using the connecting frame 65 as a bracket for attaching the rear cover 83, it is possible to achieve shared use of members (cost reduction).

  The extending wall 83b extends downward from the rear end, left end, and right end of the upper surface wall 83a. An air intake 86 that is an opening long in the body width direction is formed on the rear surface portion of the extending wall 83b. The air intake 86 is an opening through which outside air taken into the machine body 2 by the cooling fan 38 passes. The lower surface wall 83c extends forward and toward the inside of the machine body from the lower end of the extending wall 83b.

  As shown in FIGS. 7 and 9, the lower end of the bonnet 19 is placed on the upper surface of the cover member 18 via a seal member. Therefore, the bonnet 19 covers the open part of the cover member 18. In other words, the bonnet 19 covers the engine 28, the shroud 47, the radiator 49, and the oil cooler 50. The bonnet 19 also covers the upper front of the engine 28.

  As shown in FIG. 7, a bonnet frame 87 is provided on the inner surface side of the bonnet 19. The bonnet frame 87 includes a support frame 88 and an opening / closing arm 89. The support frame 88 is provided from the front part to the rear part of the bonnet 19 and supports the bonnet 19. The rear portion of the support frame 88 is supported by the connection frame 65 (the first attachment portion 66 and the second attachment portion 67). The first attachment portion 66 and the second attachment portion 67 are support portions that support the rear portion of the bonnet 19. The rear end of the open / close arm 89 is fixed to the support frame 88. The front end of the open / close arm 89 is pivotally supported by the body 2 so as to be rotatable about an axis in the body width direction. Therefore, the bonnet 19 is swingable up and down (openable and closable) around the pivotal support portion 90 of the open / close arm 89. As indicated by phantom lines in FIG. 7, the upper part of the machine body 2 (the engine 28, the shroud 47, the radiator 49, the oil cooler 50, and the air cleaner 41) is opened by swinging the bonnet 19 upward.

  The air cleaner 41 is located inside the bonnet 19. In front of the air cleaner 41, an indicator 91 that displays dirt on the air cleaner 41 is provided. Indicator 91 is located above the upper surface of cover member 18 (left side cover 81L). Therefore, when the bonnet 19 is opened, the indicator 91 is visible from the side (the left side of the machine body 2). Further, as shown in FIG. 1, the indicator 91 is located inward of the rear lower end side of the passenger door 31 on the left side of the cabin 4. Thus, when the hood 19 is opened with the left entrance door 31 open, the indicator 91 is visible from the side.

As shown in FIG. 10, a hydraulic oil tank 92 for storing hydraulic oil for supplying hydraulic pressure is provided on the right side of the front portion of the body 2 and in front of the right rear wheel 9 and the right fender 85R. .
The right fender 85R will be described in detail with reference to FIGS.
As shown in FIGS. 11, 12, 15, and 16, the right side cover 81R includes a front surface portion 93, an upper surface portion 94, an inner surface portion 95, an outer surface portion 96, a back surface portion 97, and an extension portion. 98. As shown in FIG. 15, the front surface portion 93 extends downward from the front end of the upper surface portion 94. The lower end of the front surface portion 93 is located near the upper end of the second side wall 52 and near the upper end of the hydraulic oil tank 92.

As shown in FIG. 12, the front and rear intermediate portions of the upper surface portion 94 have a plurality of insertion holes 99 and 100 formed by annular edges. The plurality of insertion holes 99 and 100 include a first insertion hole 99 and a second insertion hole 100 located behind the first insertion hole 99. The rear portion of the upper surface portion 94 is placed and fixed on the mounting plate 56b of the second cabin bracket 56.
As shown in FIGS. 11, 12, and 16, the inner surface portion 95 is disposed away from the second side wall 52 by a predetermined distance outward from the body. The inner surface portion 95 extends downward from the end portion of the upper surface portion 94 in the body. A cutout portion (referred to as a second cutout portion) 101 is provided on the front lower end side of the inner surface portion 95. As shown in FIG. 12, the 2nd notch part 101 has the front edge 101a, the upper edge 101b, and the rear edge 101c, and is formed in the downward open shape.

As shown in FIGS. 12 and 16, the extending portion 98 extends from the lower end of the inner surface portion 95 toward the inside of the machine body. The extension part 98 is fixed to the second support plate 58 with bolts. Note that the extending portion 98 is not formed in a portion corresponding to the second notch portion 101.
As shown in FIGS. 11 and 16, the outer surface portion 96 extends downward from the end portion of the upper surface portion 94 outside the machine body. As shown in FIGS. 10 and 11, the outer surface portion 96 includes an inspection hole 102 formed by an annular edge portion, and a closing member 103 that closes the inspection hole 102 so as to be freely opened and closed. The inspection hole 102 and the closing member 103 are provided in the front part of the outer surface part 96.

As shown in FIGS. 11 and 15, the back surface portion 97 is provided so as to extend downward from the lower surface of the upper surface portion 94. The back surface portion 97 is provided behind and in the vicinity of the first insertion hole 99. A stay member 104 is provided at a lower portion of the back surface portion 97 so as to protrude rearward.
As shown in FIGS. 11 and 12, the right side cover 81 </ b> R includes an extension portion 105 and a partition member 106. The extension portion 105 is a portion extending from the front end portion of the upper surface portion 94 and the front surface portion 93, and extends from the inner surface portion 95 toward the inside of the body. The partition member 106 includes a first partition plate 107 and a second partition plate 108. The first partition plate 107 includes a back plate 107a that protrudes inward from the front end of the inner surface portion 95, and a side plate 107b that extends forward from the end of the back plate 107a toward the inside of the body. The second partition plate 108 is located below the upper plate. The partition member 106 is provided with a plurality of through portions 109, 110, and 111 for passing a routing member such as a hose or a harness. The plurality of through portions 109, 110, and 111 are a first through portion 109 provided at the lower portion of the back plate 107 a, a second through portion 110 provided at the lower portion of the second partition plate 108, and the first partition plate 107. A third through-hole 111 provided between the side plate and the second partition plate 108.

  As shown in FIGS. 13, 14, 15, and 16, the second cover plate 84 </ b> R includes a lower surface portion 112, a side surface portion 113, and a support portion 114. As shown in FIG. 16, the lower surface portion 112 protrudes from the upper outer surface of the second side wall 52 toward the outside of the machine body. The lower surface portion 112 constitutes the lower surface of the right fender 85R. Therefore, the lower surface portion 112 covers the upper side of the right rear wheel 9 and covers the lower side of the right side cover 81R.

  As shown in FIG. 13, a plurality of fender stays 116 and 117 are fixed to the lower surface portion 112 on the inward side of the machine body. The plurality of fender stays 116 and 117 include a first fender stay 116 and a second fender stay 117 positioned behind the first fender stay 116. The first fender stay 116 and the second fender stay 117 are fixed to the second side wall 52 with bolts.

As shown in FIG. 15, the lower surface portion 112 has an inclined shape that moves downward as the front portion 112a goes forward, and the rear portion 112b has a horizontal shape. The front end of the lower surface portion 112 is in contact with the upper rear surface of the hydraulic oil tank 92 via a seal material. There is a gap between the lower end of the front surface portion 93 and the front end of the lower surface portion 112. A space between the lower end of the front surface portion 93 and the front end of the lower surface portion 112 is blocked by a portion 92 a at the upper rear surface of the hydraulic oil tank 92.

The hydraulic oil tank 92 (tank) provided in front of the fender 85R has a portion 92a that blocks between the lower end of the front surface portion 93 and the front end of the lower surface portion 112, so that the structure can be simplified.
As shown in FIG. 16, the lower portion of the side surface portion 113 is fixed to an end portion of the lower surface portion 112 on the outside of the machine body. The upper end of the side surface portion 113 is in contact with the lower end of the outer surface portion 96 via a sealing material.

  As shown in FIG. 15, the support portion 114 extends upward from the rear end of the lower surface portion 112. A stay (referred to as a third fender stay) 118 is fixed to the support portion 114. The third fender stay 118 is connected to the stay member 104 by bolts. Therefore, the back surface portion 97 is supported by the support portion 114 extended from the lower surface portion 112 attached to the machine body 2. Thereby, the back surface portion 97 and the upper surface portion 94 can be firmly supported.

As shown in FIG. 15 and FIG. 16, a space part that can accommodate the electrical equipment 119 with the front surface part 93, the upper surface part 94, the lower surface part 112, the outer surface part 96, the side surface part 113, and the rear surface part 97 of the right fender 85 </ b> R. 123 is formed. As shown in FIG. 15, the electrical equipment 119 includes a box 120 and electrical parts 121 such as fuses and relays housed in the box 120.
By providing the space 123 for accommodating the electrical equipment 119 in the fender 85R, it becomes easy to access the electrical equipment 119. Further, when forming the space 123 in the fender, a lower surface portion 112 that covers the upper side of the traveling device 5, an upper surface portion 94 that is positioned above the lower surface portion 112 and on which the bonnet 19 is placed, and a lower surface An outer surface portion 96 that covers the outer side of the machine body between the portion 112 and the upper surface portion 94 is provided. By mainly configuring the space portion 123 with the lower surface portion 112, the upper surface portion 94, and the outer surface portion 96, the space portion 123 can be easily and compactly formed with a simple configuration.

  As shown in FIG. 11, a harness connecting portion 124 to which a harness is connected is provided on the front side of the electrical equipment 119 and on the side of the body. As shown in FIG. 10, the electrical equipment 119 accommodated in the space 123 of the fender 85R is disposed at a position corresponding to the inspection hole 102 in the front-rear direction and the vertical direction. In addition, a surface (outer surface) 119a corresponding to the inspection hole 102 is inclined toward the inside of the body as it goes rearward. In other words, the electrical equipment 119 is inclined toward the body as it goes backward as a whole.

  By providing the inspection hole 102 that is closed by the closing member 103 in the outer surface portion 96, the electrical equipment 119 can be easily accessed. In addition, since the outer surface 119a of the electrical equipment 119 is inclined toward the inside of the machine body as it goes rearward, the electrical equipment 119 is inclined with respect to the inspection hole 102, and the electrical equipment 119 is passed through the inspection hole 102. Can be easily attached or removed. In addition, a harness arranged in the space 123 through the first through portion 109 and the second through portion 110 is connected to the harness connecting portion 124 of the electric device 119, but the electric device 119 goes backward. Accordingly, the harness can be arranged and connected easily by inclining toward the inside of the body (inclining toward the outside of the body as it goes forward).

  As shown in FIG. 16, the electrical equipment 119 is attached to the equipment bracket 122. The equipment bracket 122 includes a support wall 122a and a mounting wall 122b. The support wall 122a is located in the space 123 and supports the electrical equipment 119. The mounting wall 122b extends outward from the lower body of the support wall 122a. As shown in FIGS. 11 and 12, the mounting wall 122b extends from the lower end of the support wall 122a through the second cutout portion 101 toward the inside of the inner surface portion 95. The mounting wall 122b is fixed on the second support plate 58 with bolts.

As shown in FIG. 15, a space in which a plurality of piping members 126 and 127 can be arranged is provided in the space 123 and in front of, behind, and below the electrical equipment 119. In the present embodiment, two piping members 126 and 127 are arranged in the space 123. The two piping members 126 and 127 are piping members for an air conditioner, and include a first piping member 126 and a second piping member 127. The first piping member 126 is a piping member arranged from the condenser side to the air conditioner main body (evaporator) side. The second piping member 127 is a piping member arranged from the air conditioner main body side to the compressor side. The piping members 126 and 127 are inserted into the front portion of the space portion 123 through the third through portion 111 from the machine body 2 side. Further, the piping member is routed to the rear portion of the space portion 123 through the lower surface portion 112. The piping members 126 and 127 are routed upward at the rear portion of the space portion 123. The piping members 126 and 127 are routed through the first insertion hole 99 and above the upper surface portion 94 and into the cabin 4. The piping members 126 and 127 are routed in the cabin 4 through the guide 129 to the air conditioner body provided in the roof 30 of the cabin 4. The guide 129 is provided at the rear part of the center pillar 128 of the cabin 4. The center pillar 128 is a support member provided in the front-rear halfway part of the side part of the cabin 4.

  By providing a space for arranging the piping members 126 and 127 in the space portion 123, the space portion 123 can be used effectively. Also, the machine body side hoses 126a and 127a routed in the space 123 from the machine body 2 side and the cabin side hoses 126b and 127b routed to the cabin 4 are located in the space part 123 and the lower surface part 112. They are connected by a joint member 130 above. When connecting the fuselage-side hoses 126a, 127a and the cabin-side hoses 126b, 127b, the second cover plate 84R is removed. When the fuselage-side hoses 126a and 127a and the cabin-side hoses 126b and 127b are connected in the space 123, the fuselage-side hoses 126a and 127a and the cabin-side hoses 126b and 127b are connected in the fuselage 2. In comparison, connection can be made easily.

  FIGS. 17 and 18 show the arrangement of two heater pipes 131 and 132 which are pipe members for heaters of an air conditioner. The two heater pipes 131 and 132 include a first heater pipe 131 and a second heater pipe 132. The first heater pipe 131 includes a first hose 131a which is a hose connected to the engine 28 side, a second hose 132a which is a hose connected to the air conditioner main body side, a first hose 131a and a second hose 131b. And a first connecting pipe 131c to be connected. The second heater pipe 132 includes a third hose 132a that is a hose connected to the engine 28 side, a fourth hose 132b that is a hose connected to the air conditioner main body side, a third hose 132a and a fourth hose 132b. And a second connection pipe 132c to be connected.

  A piping bracket 133 is fixed to the upper back of the leg portion 56 a of the second cabin bracket 56. The first connecting pipe 131c and the second connecting pipe 132c are fixed to the pipe bracket 133. The rear portions of the first connecting pipe 131c and the second connecting pipe 132c are along the body width direction. The front portions of the first connection pipe 131c and the second connection pipe 132c are along the front-rear direction. The first hose 131a is routed behind the leg portion 56a of the second cabin bracket 56 through the second side wall 52 from the engine 28 side and connected to the rear portion of the first connection pipe 131c. The third hose 132a is routed from the engine 28 over the second side wall 52 to the rear of the leg portion 56a of the second cabin bracket 56 and connected to the rear portion of the second connection pipe 132c. The second hose 131b is connected to the front portion of the first connection pipe 131c. The second hose 131b is routed into the cabin 4 through the second insertion hole 100 through the outer side of the leg portion 56a of the second cabin bracket 56 from the first connecting pipe 131c. The fourth hose 132b is connected to the front part of the second connection pipe 132c. The fourth hose 132b is routed into the cabin 4 through the second insertion hole 100 through the outer side of the leg 56a of the second cabin bracket 56 from the second connection pipe 132c. The second hose 131b and the fourth hose 132b arranged in the cabin 4 through the second insertion hole 100 are inserted into the center pillar 128 from the insertion port 134 provided at the lower end of the center pillar 128. . The second hose 131b and the fourth hose 132b are routed to the roof 30 of the cabin 4 through the center pillar 128.

As shown in FIGS. 19 and 20, the cooling unit 39 has an attachment frame 136 attached to the airframe 2. The attachment frame 136 includes a lower frame 137, a first vertical frame 138, a second vertical frame 139, and a horizontal frame 140. The lower frame 137 is attached to a part forming the lower edge 61a of the first notch 61 of the rear wall 54 with a bolt. The first vertical frame 138 has a first attachment piece 141 at the top. The first attachment piece 141 is attached to the first stay 71 of the rear frame 62. The lower end of the first vertical frame 138 is attached to the lower frame 137. The second vertical frame 139 has a second attachment piece 142 at the top. The second attachment piece 142 is attached to the second stay 72 of the rear frame 62. The lower end of the second vertical frame 139 is attached to the lower frame 137. The horizontal frame 140 connects the first vertical frame 138 and the second vertical frame 139. The oil cooler 50 is attached to the first vertical frame 138 and the second vertical frame 139. The radiator 49 is placed on the lower frame 137 via an elastic member. The radiator 49 has a support piece 143 on the left side. The support piece is attached to the first radiator bracket 73. The radiator 49 has a similar support piece (not shown) on the right side, and this support piece is attached to the second radiator bracket 74.

A receiving member 144 is provided on the left front side of the radiator 49. A similar receiving member (not shown) is provided on the right front surface of the radiator 49.
As shown in FIGS. 21, 22, and 23, the back surface of the shroud 47 is open rearward (to the radiator 49 side). An open portion of the back surface of the shroud 47 is covered with a radiator 49.

  As shown in FIGS. 21 and 23, the shroud 47 has a plurality of mounting brackets 145 to 152. The plurality of mounting brackets 145 to 152 include a first mounting bracket 145, a second mounting bracket 146, a third mounting bracket 147, a fourth mounting bracket 148, a fifth mounting bracket 149, a sixth mounting bracket 150, and a seventh mounting bracket 151. And an eighth mounting bracket 152.

The first mounting bracket 145 is provided on the upper portion of the left side surface of the shroud 47. The second mounting bracket 146 is provided on the upper portion of the right side surface of the shroud 47. The third mounting bracket 147 is provided in the middle of the left side surface of the shroud 47. The fourth mounting bracket 148 is provided in the middle of the right side surface of the shroud 47.
As shown in FIG. 21, the fifth to eighth mounting brackets 149 to 152 are provided inside the shroud 47. The fifth mounting bracket 149 is provided on the upper left side of the shroud 47. The sixth mounting bracket 150 is provided on the upper right side of the shroud 47. The seventh mounting bracket 151 is provided at the lower left portion of the shroud 47. The eighth mounting bracket 152 is provided on the lower right side of the shroud 47.

  As shown in FIG. 19, the first mounting bracket 145 is attached to the left side of the upper surface of the radiator 49. The second mounting bracket 146 is attached to the right side of the upper surface of the radiator 49. The third mounting bracket 147 is received by being fitted to the receiving member 144 from above. The fourth mounting bracket 148 is received by being fitted from above to a receiving member (not shown) provided on the right side of the radiator 49.

  As shown in FIGS. 21 and 22, an intercooler 48 is provided in the shroud 47. The cooler provided in the shroud 47 may be the oil cooler 50 or other coolers. An inlet portion 153 and an outlet portion 154 are provided on the upper surface of the intercooler 48. The inlet part 153 is a part that puts compressed air (fluid) sent from the supercharger into the intercooler 48. The inlet portion 153 is provided on the right side of the upper surface side of the intercooler 48 so as to be open upward. An inlet pipe 155 is connected to the inlet portion 153. The inlet pipe 155 is a pipe that guides the compressed air sent from the supercharger to the intercooler 48. The outlet portion 154 is a portion that discharges compressed air from the intercooler 48. An upper opening is provided on the left side of the intercooler 48 on the upper surface side. An outlet pipe 156 is connected to the outlet portion 154. The outlet pipe 156 is a pipe that sends the compressed air supplied to the intercooler 48 to the engine 28.

As shown in FIG. 21, the intercooler 48 is attached to the shroud 47 by a mounting frame 157. The mounting frame 157 is provided behind the intercooler 48 and on the back side (the radiator 49 side) of the shroud 47.
The mounting frame 157 includes an upper horizontal member 158, a lower horizontal member 159, a first vertical connecting member 160, and a second vertical connecting member 161. The upper cross member 158 is provided above the shroud 47 along the body width direction. One end of the upper cross member 158 is attached to the fifth mounting bracket 149. The other end of the upper cross member 158 is attached to the sixth attachment bracket 150. The lower cross member 159 is provided in the lower part of the shroud 47 along the body width direction. One end of the lower cross member 159 is attached to the seventh attachment bracket 151. The other end of the lower cross member 159 is attached to the eighth mounting bracket 152.

As shown in FIGS. 19 to 23, the shroud 47 includes a main plate portion 162 and a duct portion 163. The main plate portion 162 is provided on the front side of the duct portion 163 (in front of the intercooler 48) at an interval. The back surface of the duct portion 163 is open, and the radiator 49 covers the back surface of the duct portion 163.
As shown in FIG. 23, the main plate part 162 includes a ventilation opening 164, a first insertion part 165, and a second insertion part 166. The ventilation opening 164 is formed by a substantially circular edge. As shown in FIGS. 19 and 22, a cooling fan 38 is disposed in the ventilation opening 164. The ventilation opening 164 surrounds the outer periphery of the cooling fan 38 with a slight gap from the outer periphery of the cooling fan 38.

  As shown in FIGS. 19 and 23, the first insertion portion 165 is a portion through which the outlet pipe 156 is inserted. The first insertion portion 165 is provided on the left side of the upper portion of the main plate portion 162. The first insertion portion 165 is formed by a U-shaped edge (notch) that is open upward. An outlet pipe 156 can pass through the first opening portion 167 that is an opening portion of the first insertion portion 165 from above. The second insertion portion 166 is a portion through which the inlet pipe 155 is inserted. The second insertion portion 166 is provided on the right side of the upper portion of the main plate portion 162. The second insertion portion 166 is formed by a U-shaped edge (notch) that is open upward. An inlet pipe 155 can pass through the second opening portion 168 that is an opening portion of the second insertion portion 166 from above.

As illustrated in FIG. 23, an extension piece 169 is provided between the first insertion portion 165 and the second insertion portion 166. The extending piece 169 extends rearward from the upper end of the main plate portion 162. A nut (referred to as a first nut) 170 is fixed to the right side of the lower surface of the extension piece 169.
As shown in FIG. 19, the duct portion 163 surrounds between the main plate portion 162 and the radiator 49, and guides the cooling air generated by the cooling fan 38. As shown in FIG. 23, the duct portion 163 includes a duct body 171 and a detaching plate 172. The duct body 171 is formed of a single plate material together with the main plate portion 162. The duct main body 171 includes a bottom plate portion 173, a first side plate portion 174, and a second side plate portion 175. The first side plate portion 174 protrudes upward from the left end of the bottom plate portion 173. A plurality of first support pieces 176 a and 176 b extending inside the duct portion 163 are provided at the upper end of the first side plate portion 174. The second side plate portion 175 protrudes upward from the right end of the bottom plate portion 173. A plurality of second support pieces 177 a and 177 b extending inside the duct portion 163 are provided at the upper end of the second side plate portion 175.

  As shown in FIGS. 19 and 23, the attachment / detachment plate 172 is formed of a single plate material, and includes an upper plate portion 178, a front plate portion 179, a rear plate portion 180, and a grip plate 181. The upper plate portion 178 is formed to have a length extending between the first side plate portion 174 and the second side plate portion 175 and covers the upper portion between the first side plate portion 174 and the second side plate portion 175. The left side of the upper plate portion 178 is placed on the first support pieces 176a and 176b and is fixed to the first support pieces 176a and 176b with bolts. The right side of the upper plate portion 178 is placed on the second support pieces 177a and 177b and is fixed to the second support pieces 177a and 177b with bolts. Thereby, the detachable plate 172 can be removed from the duct body 171. In other words, the duct portion 163 includes a removable plate 172 that is removable in part.

As shown in FIG. 19, the upper plate portion 178 (detachment plate 172) is attached to the duct body 171 and the open portions of the first insertion portion 165 and the second insertion portion 166 (first opening portion 167, second opening). Block part 168). Therefore, if the detaching plate 172 is removed from the duct body 171, the first
The open portions of the insertion portion 165 and the second insertion portion 166 are open.
As shown in FIG. 23, the upper plate part 178 has an insertion part 182 at the front part. The insertion portion 182 is formed in the middle portion of the upper plate portion 178 in the machine width direction. The insertion portion 182 is formed by a groove that penetrates the upper plate portion 178 and is long in the body width direction. The insertion part 182 is a hole for inserting a dustproof net (referred to as a first dustproof net) 183 described later into the shroud 47. A first insertion hole 184 and a first insertion hole 185 are formed in the upper plate portion 178. The first insertion hole 184 is provided on the left side on the rear side of the insertion portion 182. A nut (referred to as a second nut) 186 is fixed to the lower surface of the upper plate portion 178 corresponding to the first insertion hole 184. The first insertion hole 185 is provided on the right side on the front side of the insertion portion 182.

  As shown in FIG. 19, the upper plate portion 178 is provided with a plurality of fixtures 187 and 188. The plurality of fixtures 187 and 188 include a first fixture 187 and a second fixture 188. The 1st fixing tool 187 and the 2nd fixing tool 188 are comprised by the butterfly bolt. The first fixing tool 187 is inserted into the upper plate portion 178 (first insertion hole 184) and screwed into the second nut 186. The second fixture 188 is inserted through the upper plate portion 178 (second insertion hole 185) and the extension piece 169 and is screwed into the first nut 170.

As shown in FIG. 19, the front plate portion 179 extends downward from the front end of the upper plate portion 178. The front plate portion 179 contacts the upper front portion of the main plate portion 162. The front plate portion 179 is provided with a first notch 189 formed at a portion corresponding to the first insertion portion 165 and a second notch 190 formed at a portion corresponding to the second insertion portion 166. Yes.
As shown in FIG. 21, the rear plate portion 180 extends downward from the upper plate portion 178. The grip plate 181 is provided between the first notch 189 and the second notch 190 of the front plate portion 179. As shown in FIG. 19, the gripping plate 181 extends forward from the lower end of the front plate portion 179.

As shown in FIGS. 22 and 24, the first dust-proof net 183 is provided in the shroud 47. Further, the first dustproof net 183 is disposed between the cooling fan 38 and the intercooler 48 (and the radiator 49). The first dustproof net 183 is a member that prevents the passage of dust and dust, and has air permeability.
As shown in FIGS. 24 and 25, the first dustproof net 183 includes a first net 191 and a second net 192. The first net 191 and the second net 192 are inserted into the shroud 47 from the insertion portion 182. The first net 191 is disposed on the left side (one side of the shroud 47) from the center in the width direction (machine width direction) of the shroud 47. The first net 191 is disposed on the left portion of the shroud 47 by being inserted into the shroud 47 from the insertion portion 182 and then sliding leftward. The second net 192 is arranged on the right side (the other side of the shroud 47) from the center in the width direction (machine width direction) of the shroud 47. The second net 192 is disposed in the right portion of the shroud 47 by being inserted into the shroud 47 from the insertion portion 182 and then sliding to the right.

  The upper portion of the first net 191 is formed in a stepped shape in which the first upper portion 191a which is a portion on the outer side of the body is lower than the second upper portion 191b which is a portion on the outer side of the body. The first upper portion 191a has a height that does not block the first insertion portion 165. The upper part of the second net 192 is formed in a stepped shape in which the third upper portion 192a that is a portion on the outer side of the body is lower than the fourth upper portion 192b that is a portion on the inner side of the body. The third upper portion 192a has a height that does not block the second insertion portion 165.

  A fixing member (referred to as a first fixing member) 193 is provided on the upper portion of the first net 191. The 1st fixing member 193 has the 1st mounting part 193a, the 1st extension part 193b, and the 1st return part 193c. The first placement portion 193a is placed on the upper plate portion 178. The first placement portion 193a (first fixing member 193) is fixed to the upper plate portion 178 by the first fixing tool 187. The first extending portion 193b extends downward from the front end of the first placement portion 193a. The first extending portion 193b is fixed to the second upper portion 191b of the first net 191. The first folded portion 193c extends upward from the rear end of the first placement portion 193a.

  A fixing member (referred to as a second fixing member) 194 is provided on the upper portion of the second net 192. The second fixing member 194 includes a second placement portion 194a, a second extending portion 194b, and a second folded portion 194c. The second placement portion 194a is placed on the upper plate portion 178. The second placement portion 194 a (second fixing member 194) is fixed to the upper plate portion 178 by the second fixing tool 188. The second extending portion 194b extends downward from the rear end of the second placement portion 194a. The second extending portion 194 b is fixed to the fourth upper portion 192 b of the second net 192. The second folded portion 194c extends upward from the front end of the second placement portion 194a.

  As shown in FIG. 24, a plurality of positioning members 196 and 197 are provided on the bottom plate portion 173 of the duct portion 163. The plurality of positioning members 196, 197 include a first positioning member 196 and a second positioning member 197. The first positioning member 196 is provided on the left side on the bottom plate portion 173. The second positioning member 197 is provided on the right side on the bottom plate portion 173. As shown in FIG. 22, the first positioning member 196 includes a lower portion 196a fixed on the bottom plate portion 173, and a rising wall 196b that rises upward from the front end of the lower portion. The lower end side of the first net 191 contacts the lower rear surface of the rising wall 196b. The upper part of the rising wall 196b is formed in an inclined shape that moves forward as it goes upward. The second positioning member 197 is configured in the same manner as the first positioning member 196.

In the above shroud 47, a part of the duct portion 163 is a removable plate 172 that can be removed. Therefore, when the detaching plate 172 is removed, maintenance inside the shroud 47 can be performed. Further, since only a part of the duct portion 163 is a removable plate 172, a structure for checking the inside of the shroud 47 can be easily manufactured.
Further, the inlet portion 153 and the outlet portion 154 of the intercooler 48 provided in the duct portion 163 are provided on the side corresponding to the detachable plate 172. Therefore, by removing the detaching plate 172, the inlet portion 153 and the outlet portion 154 can be easily maintained.

  Further, the main plate portion 162 is provided with a first insertion portion 165 for inserting the inlet pipe 155 and a second insertion portion 166 for inserting the outlet pipe 156, and the first insertion portion 165 can pass the inlet pipe 155 and The first opening 167 is closed by the detaching plate 172, and the second insertion portion 166 has the second opening 168 through which the outlet pipe 156 can pass and is closed by the detaching plate 172. Therefore, by removing the detaching plate 172, the inlet pipe 155 and the outlet pipe 156 can be easily attached or detached.

When the bonnet 19 is opened by providing the detachable plate 172 at a position corresponding to the bonnet 19 in a state where the bonnet 19 is closed, the detachable plate 172 side of the shroud 47 is opened, and the detachable plate 172 is removed and the inside of the shroud 47 Maintenance becomes easy.
By forming the insertion portion 182 for inserting the first dust-proof net 183 in the detachable plate 172, the first dust-proof net 183 can be easily disposed in the shroud 47.

  By providing fixtures 187 and 188 for fixing the first dustproof net 183 to the detachable plate 172, the first dustproof net 183 can be fixed to the detachable plate 172. Also, the first dustproof net 183 can be removed together with the detaching plate 172 by releasing the fixing of the detaching plate 172 to the duct body 171 and releasing the fixing of the second net 192 and the detaching plate 172 by the second fixing tool 188. it can.

By dividing the first dust-proof net 183 into the first net 191 and the second net 192, the insertion portion 182 can be made smaller.
As shown in FIG. 26, a fixing bracket 198 is attached to the lower part of the rear part of the engine 28. The fixed bracket 198 is a bracket that is supported by the rear mount bracket 77 via the mount member 199. Therefore, the fixing bracket 198 is supported by the body 2. A support bracket 200 is attached to the fixed bracket 198. The DOC device 40 is supported on the support bracket 200.

As shown in FIGS. 26 and 27, the DOC device 40 includes a case 201 and an oxidation catalyst 202 accommodated in the case 201. The case 201 is formed in a columnar appearance. The cylindrical case 201 is arranged with the axis of the cylinder aligned in the body width direction. An air supply unit 203 is provided on the right side of the case 201. The air supply unit 203 is a part that takes in the exhaust gas discharged from the engine 28 into the DOC device 40 (in the case 201).

  As shown in FIG. 28, the air supply unit 203 is joined to an exhaust pipe 204 through which exhaust gas from the engine 28 flows. A first joint 205 is fixed to an end of the exhaust pipe 204 on the downstream side of the exhaust gas flow. A second joint 206 is fixed to the air supply unit 203. As shown in FIG. 28, the first joint portion 205 and the second joint portion 206 are joined by a plurality of joining bolts (joining members) 207a to 207d.

  As shown in FIG. 26, FIG. 28, and FIG. 29, the 1st junction part 205 is comprised by the flange which consists of a square board | plate material. As for the 1st junction part 205, the junction surface 205a which is a surface which faces the 2nd junction part 206 has faced back. Moreover, as for the 1st junction part 205, an upper edge and a lower edge follow a machine body width direction, and a side edge follows an up-down direction. The first joint portion 205 has a plurality of joint holes 208a to 208d (referred to as first joint holes). The plurality of first joining holes 208a to 208d include four holes. The four first joint holes 208a to 208d are formed at the four corners of the quadrangular first joint 205. Each of the first joining holes 208a to 208d is formed as a long hole that is long in the vertical direction.

  The 2nd junction part 206 is comprised by the flange which consists of a square board | plate material. As for the 2nd junction part 206, the junction surface 206a which is a surface which faces the 1st junction part 205 has faced the front. Moreover, as for the 2nd junction part 206, an upper edge and a lower edge follow a machine body width direction, and a side edge follows an up-down direction. The second joint portion 206 has a plurality of joint holes (referred to as second joint holes) 209a to 209d. The plurality of second joint holes include four holes. The four second joint holes 209a to 209d are formed at the four corners of the quadrangular second joint 206. Each of the second joining holes 209a to 209d is formed as a long hole that is long in the vertical direction.

It should be noted that at least one of the first joining holes 208a to 208d and the second joining holes 209a to 209d may be a long hole, and the other may be a circular hole.
The second joint 206 faces the first joint 205 in the front-rear direction via the packing 210. The packing 210 is formed in a quadrangle, and an upper edge and a lower edge are along the body width direction, and a side edge is along the vertical direction. The packing 210 has a plurality of joining holes (referred to as third joining holes) 211a to 211d. The plurality of third joint holes 211a to 211d includes four holes. The four third joining holes 211 a to 211 d are formed at the four corners of the rectangular packing 210.

  The joining bolts 207a to 207d are inserted through the first joining holes 208a to 208d, the third joining holes 211a to 211d, and the second joining holes 209a to 209d from the front side. A nut member (not shown) is screwed to the front end side (rear end side) of each joining bolt 207a to 207d. The first joint 205 and the second joint 206 are joined via the packing 210 by the joining bolts 207a to 207d and the nut member.

As shown in FIG. 26, an exhaust part 212 is provided on the left side of the case 201. The exhaust part 212 is provided in the lower part of the rear part of the case 201. A tail pipe 213 is joined to the exhaust part 212 by a flange. Therefore, the exhaust gas of the engine 28 is exhausted from the tail pipe 213 through the DOC device 40.
As shown in FIG. 27, the DOC device 40 is provided with a plurality of attachment stays 214a to 214d. The plurality of attachment stays 214a to 214d include a first attachment stay 214a, a second attachment stay 214b, a third attachment stay 214c, and a fourth attachment stay 214d. The first attachment stay 214 a and the second attachment stay 214 b are provided on a first band member 215 provided on the left side of the DOC device 40. The first attachment stay 214 a and the second attachment stay 214 b are displaced in the circumferential direction of the case 201. The third attachment stay 214c and the fourth attachment stay 214d are provided on the second band member 216 provided at the center of the DOC device 40 in the body width direction. The third mounting stay 214c and the fourth mounting stay 214d are displaced in the circumferential direction of the case 201. Each of the first to fourth mounting stays 214a to 214d is formed with a plurality of (two) mounting holes (for bolt insertion).

As shown in FIG. 30, the fixing bracket 198 includes a first member 217 and a second member 218. The support bracket 200 includes a first support bracket 219 and a second support bracket 220.
As illustrated in FIGS. 30 to 32, the first member 217 includes a first mount mounting portion 221 and a first engine fixing portion 222. A mount member 199 is attached to the first mount attachment portion 221. The first engine fixing part 222 is attached to the rear part and the lower part of the left side of the engine 28. A rear portion of the first engine fixing portion 222 is provided with a first stay portion 223 that extends toward the inside of the machine body.

  As shown in FIG. 32, the first stay portion 223 has a plurality of mounting holes (referred to as first mounting holes) 224a and 224b. The plurality of first mounting holes 224a and 224b are formed as long holes that are long in the front-rear direction. The plurality of first attachment holes 224 a and 224 b include a first attachment hole 224 a provided in the front portion of the first stay portion 223 and a first attachment hole 224 b provided in the rear portion of the first stay portion 223.

  The second member 218 includes a second mount attachment portion 225 and a second engine fixing portion 226. A mount member 199 is attached to the second mount attachment portion 225. The second engine fixing part 226 is attached to the rear and lower part of the right side of the engine 28. A rear portion of the second engine fixing portion 226 is provided with a second stay portion 227 that extends toward the inside of the machine body. A plurality of attachment holes (referred to as second attachment holes) 228a and 228b are formed in the second stay portion 227. The plurality of second mounting holes 228a and 228b are formed as long holes in the front-rear direction similar to the first mounting holes 224a and 224b. The plurality of second attachment holes 228 a and 228 b include a second attachment hole 228 a provided in the front portion of the second stay portion 227 and a second attachment hole 228 b provided in the rear portion of the second stay portion 227.

  The first support bracket 219 includes a first plate portion 229, a second plate portion 230, and a reinforcing plate (referred to as a first reinforcing plate) 231. The first plate portion 229 is provided such that the plate surface faces up and down. The first plate portion 229 is formed to have a length extending between the first stay portion 223 and the second stay portion 227. The first plate part 229 is placed on the first stay part 223 and the second stay part 227. The first plate portion 229 has a plurality of mounting holes (referred to as third mounting holes) 232a and 232b corresponding to the first mounting holes 224a and 224b. The first plate portion 229 has a plurality of mounting holes (referred to as fourth mounting holes) 233a and 233b corresponding to the second mounting holes 228a and 228b. The third mounting holes 232a and 232b and the fourth mounting holes 233a and 233b are formed by circular holes.

  The bolts (not shown) inserted into the third mounting holes 232a, 232b and the first mounting holes 224a, 224b and the bolts (not shown) inserted into the fourth mounting holes 233a, 233b and the second mounting holes 228a, 228b One plate portion 229 is attached to the first stay portion 223 and the second stay portion 227. Therefore, the position of the first support bracket 219 can be adjusted in the front-rear direction with respect to the fixed bracket 198 within the range of the lengths of the first mounting holes 224a and 224b and the second mounting holes 228a and 228b, which are long holes. Yes.

  The second plate portion 230 extends downward from the rear end of the first plate portion 229. The second plate portion 230 is provided so that the plate surface faces front and rear. A plurality of attachment holes (referred to as fifth attachment holes) 234 a and 234 b are formed on the left side of the second plate portion 230. The plurality of fifth attachment holes 234 a and 234 b include a fifth attachment hole 234 a formed in the upper part of the second plate part 230 and a fifth attachment hole 234 b formed in the lower part of the second plate part 230. A plurality of attachment holes (referred to as sixth attachment holes) 235a and 235b are formed on the right side of the second plate portion 230. The plurality of sixth attachment holes 235 a and 235 b include a sixth attachment hole 235 a formed in the upper part of the second plate part 230 and a sixth attachment hole 235 b formed in the lower part of the second plate part 230. The fifth mounting holes 234a and 234b and the sixth mounting holes 235a and 235b are formed by circular holes.

The first reinforcing plate 231 connects the lower surface of the first plate portion 229 and the front surface of the second plate portion 230.
The second support bracket 220 includes a first bracket member 236 and a second bracket member 237.
The first bracket member 236 includes a third plate portion 238, a fourth plate portion 239, and a reinforcing plate (referred to as a second reinforcing plate) 240. The third plate portion 238 is provided so that the plate surface faces front and rear. The third plate part 238 is in contact with the left side of the rear surface of the second plate part 230. A plurality of attachment holes (referred to as seventh attachment holes) 241a, 241b corresponding to the fifth attachment holes 234a, 234b are formed in the third plate portion 238. The plurality of seventh mounting holes 241a and 241b are formed as long holes that are long in the body width direction. The fourth plate part 239 extends backward from the left end of the third plate part 238. A front portion of the fourth plate portion 239 is a first stay attaching portion 242. The rear part of the fourth plate part 239 is a second stay attaching part 243. The first stay mounting portion 242 and the second stay mounting portion 243 are formed with a plurality of (two) mounting holes (for bolt insertion). The first mounting stay 214a is attached to the first stay mounting portion 242 by a fixture such as a bolt. A second attachment stay 214b is attached to the second stay attachment portion 243 with a fixture such as a bolt. The second reinforcing plate 240 connects the lower end of the third plate portion 238 and the lower end of the fourth plate portion 239.

  The second bracket member 237 includes a fifth plate portion 244, a sixth plate portion 245, and a reinforcing plate (referred to as a third reinforcing plate) 246. The fifth plate portion 244 has a plate surface facing forward and backward, and is in contact with the right side of the rear surface of the second plate portion 230. A plurality of attachment holes (referred to as eighth attachment holes) 249a and 249b corresponding to the sixth attachment holes are formed in the fifth plate portion 244. The plurality of eighth mounting holes 249a and 249b are formed as long holes in the body width direction. The sixth plate portion 245 extends rearward from the left end of the fifth plate portion 244. A front portion of the sixth plate portion 245 is a third stay attaching portion 247. A rear portion of the sixth plate portion 245 is a fourth stay attaching portion 248. Each of the third stay mounting portion 247 and the fourth stay mounting portion 248 has a plurality of (two) mounting holes (for bolt insertion). A third attachment stay 214c is attached to the third stay attachment portion 247 with a fixture such as a bolt. The fourth stay stay 214d is attached to the fourth stay attaching portion 248 by a fixing tool such as a bolt. The third reinforcing plate 246 connects the lower end of the fifth plate portion 244 and the lower end of the sixth plate portion 245.

The first bracket member 236 and the second bracket member 237 (the second support bracket 220) are attached to the fixed bracket 198 within the range of the lengths of the seventh mounting holes 241a and 241b and the eighth mounting holes 249a and 249b, which are long holes. On the other hand, the position can be adjusted in the body width direction.
As described above, the DOC device 40 is supported by the fixed bracket 198 by the first support bracket 219 and the second support bracket 220.

  The position of the DOC device 40 is adjusted in the front-rear direction by adjusting the position of the first support bracket 219 in the front-rear direction. Thereby, the position of the second joint portion 206 is adjusted in the front-rear direction. Further, the position of the DOC device 40 is adjusted in the body width direction by adjusting the position of the second support bracket 220 in the body width direction. Thereby, the position of the second joint portion 206 is adjusted in the body width direction.

In the present embodiment, the first direction X <b> 1, which is a direction in which the second joint 206 is moved toward and away from the first joint 205, is the front-rear direction. The second direction X2, which is a direction orthogonal to the first direction X1, is the body width direction. The third direction X3 orthogonal to the first direction X1 and the second direction X2 is the vertical direction.
The first direction may be the body width direction, the second direction may be the front-rear direction, and the third direction may be the up-down direction.

In the above configuration, the position of the DOC device 40 can be adjusted by adjusting the position of the support bracket 200 that supports the DOC device 40 in at least the first direction X1 and the second direction X2.
Further, by providing the support bracket 200 capable of adjusting the position of the second joint portion 206 in the first direction X1 and the second direction X2, the second joint portion 206 can be aligned with the first joint portion 205. The second joint 206 can be appropriately joined to the first joint 205.

Moreover, in addition to the position adjustment by the support bracket 200, at least one of the first joint hole 208 and the second joint hole 209 is a long hole that is long in the third direction X3. An error in the position of the second joint hole 209 in the third direction X3 can be absorbed, and the second joint 206 can be joined to the first joint 205 more appropriately.
The support bracket 200 can be adjusted in position in the first direction X1 with respect to the fixed bracket 198 supported by the airframe 2 and in the second direction X2 with respect to the fixed bracket 198. And a second support bracket 220. Thereby, the position adjustment can be easily performed.

A support bracket 200 that supports the DOC device 40 is attached to the lower part of the rear portion of the engine 28, and the DOC device 40 is disposed below the cooling unit 39, so that the space below the engine 28 and below the cooling unit 39 is reduced. It can be effectively used as an arrangement space for the DOC device 40.
In addition, the engine 28 is provided with a fixed bracket 198 that is supported by the mount bracket 77 provided in the airframe 2 in an anti-vibration manner, and the support bracket 200 is supported by the fixed bracket 198, so that the members can be shared and the cost can be reduced. Can be achieved.

  As shown in FIG. 4, a filter insertion hole 75 formed by a circular hole is formed in the rear portion of the first support plate 57. As shown in FIG. 34, the fuel filter 43 is arranged on the inner side of the left side cover 81 </ b> L and below the hood 19. Further, the fuel filter 43 is located outside the body of the first side wall 51. The fuel filter 43 includes a cartridge 251 that is a main body portion and an upper cap portion 252. The cartridge 251 is attached to the cap unit 252 and can be detached from the cap unit 252. The cartridge 251 is inserted through the filter insertion hole 75. The lower part of the cartridge 251 protrudes downward from the filter insertion hole 75. The upper part of the cartridge 251 is located above the first support plate 57. The cap part 252 is attached to the filter bracket 253. The filter bracket 253 is attached to the first side wall 51. The lower side of the fuel filter 43 is covered with a filter cover 254. The filter cover 254 is attached to the left side cover 81L. By removing the filter cover 254, the cartridge 251 can be removed downward from the outside of the machine body 2. Thus, the cartridge 251 can be easily replaced without opening the bonnet 19.

  As shown in FIGS. 35 to 37, the second operation lever 35 is supported by the operation frame 256. The operation frame 256 is attached on the second support plate 58. A support cylinder 258 is provided on the first component plate 257 at the top of the operation frame 256. The support cylinder 258 supports the lever shaft 259 so as to be rotatable about an axis in the body width direction. The second operation lever 35 is fixed to the base portion 259 a of the lever shaft 259. Thereby, the second operation lever 35 can swing back and forth. A bent portion of a bell crank-shaped first arm 260 is attached to the lever shaft 259. Accordingly, the first arm 260 swings together with the second operation lever 35 (integral swing). The first arm 260 includes a first swing part 261 and a second swing part 262. One end of the operation cable 263 is connected to the distal end (front end) of the first swing portion 261. The operation cable 263 is configured by a push-pull cable having an inner cable and an outer cable. The other end of the operation cable 263 is connected to an attachment control valve. Therefore, by operating the second operating lever 35 forward or backward from the neutral position, the first arm 260 swings and the attachment control valve is operated. 35 to 38 show a state where the second operation lever 35 is located at the neutral position.

As shown in FIG. 36, a first groove 264, a second groove 265, and a third groove 266 are provided at the tip (lower end) of the second swinging portion 262. The first groove 264, the second groove 265, and the third groove 266 are disposed in the swinging direction of the second swinging portion 262. Further, the first groove 264, the second groove 265, and the third groove 266 are open downward. A lock pin 267 can be inserted into the first groove 264, the second groove 265, and the third groove 266 from below. When the lock pin 267 is fitted in the first groove 264, the second operation lever 35 is locked in a state where the second operation lever 35 is swung forward from the neutral position. When the lock pin 267 is fitted into the second groove 265, the second operation lever 35 is locked at the neutral position. When the lock pin 267 is fitted in the third groove 266, the second operation lever 35 is locked in a state where the second operation lever 35 is swung later from the neutral position.

  The lock pin 267 is fixed to the tip of the second arm 268. A base portion of the second arm 268 is fixed to the rotating cylinder 269. The rotating cylinder 269 is supported by an arm shaft 270 so as to be rotatable about an axis in the body width direction. The arm shaft 270 is supported by the second component plate 271 of the operation frame 256. The base of the third arm 272 is fixed to the rotating cylinder 269. A base portion of the operation rod 273 is pivotally supported at the distal end portion of the third arm 272. The operation rod 273 is supported by the operation frame 256 so as to be movable up and down. On the base side of the operation rod 273, a spring hook piece 274 is fixed. A spring member 275 is provided across the spring hook piece 274 and the lock pin 267. The spring member 275 is formed by a tension coil spring. In a state where the lock pin 267 is fitted in any of the first groove 264, the second groove 265, and the third groove 266, the urging force of the spring member 275 causes the lock pin 267 to move to the first groove 264, the second groove. 265 and the third groove 266 are biased in the direction of fitting. When the operating rod 273 is pulled up from this state, the lock pin 267 is detached from the first groove 264, the second groove 265, or the third groove 266. In a state where the operation rod 273 is pulled up, the biasing force of the spring member 275 biases the lock pin 267 in the direction of detachment from any one of the first groove 264, the second groove 265, and the third groove 266.

As shown in FIGS. 35 to 37, a detection sensor 276 is provided below the support cylinder 258. The detection sensor 276 is configured by a proximity sensor. The detection sensor 276 is attached to the third component plate 277 of the operation frame 256.
As shown in FIGS. 37 and 38, the upper end of the mounting arm 278 is fixed to the base portion 259 a of the lever shaft 259. Accordingly, the mounting arm 278 swings (integrally swings) together with the second operation lever 35. The lower part of the attachment arm 278 is located at a position corresponding to the detection part 276a of the detection sensor 276 in the body width direction (the lower part of the attachment arm 278 is located to the right of the detection part 276a of the detection sensor 276). ). A detection member 279 is attached to the lower part of the attachment arm 278 and on the side facing the detection unit 276a. The detection member 279 is configured by a magnet. A first regulating member 280 is provided on the front side of the detection member 279. A second regulating member 281 is provided on the rear side of the detection member 279. The first restriction member 280 and the second restriction member 281 come into contact with the detection member 279 and position the detection member 279. The detection sensor 276 is connected to the second control device 27 via a transmission path. In a state where the second operation lever 35 is operated to the neutral position, the detection member 279 faces the detection unit 276a. The detection unit 276a detects the detection member 279 when the detection member 279 faces the detection unit 276a. Therefore, the neutral position (neutral state of the attachment control valve) can be detected by the detection sensor 276. The detection sensor 276 does not detect the detection member 279 when the second operation lever 35 is operated from the neutral position to one side or the other side. The engine 28 cannot be started unless the detection sensor 276 detects the detection member 279. When the detection sensor 276 detects the detection member 279, the engine 28 can be started.

  Further, a brake sensor (not shown) for detecting that the parking brake is operated is provided, and in addition to detecting the neutral position of the second operation lever 35, the engine 28 can be started in a state where the parking brake is operated. You may do it. Further, a neutral sensor for detecting the neutral position of the switching device for switching the wheel loader 1 to the forward state or the reverse state is provided, and in addition to detecting the neutral position of the second operating lever 35 and detecting the operation of the parking brake, The engine 28 may be started in a state where the neutral position is detected. The engine 28 may be started on the condition that the neutral position of the second operation lever 35 is detected and the neutral position of the switching device is detected.

As shown in FIG. 39, a support substrate 282 made of a thick plate material is provided on the upper end side of the front portion of the machine body 2. The support substrate 282 is provided from the upper surface of the third support plate 59 to the upper surface of the fourth support plate 60. The left side of the support substrate 282 is fixed to the third support plate 59 by a first fixing bolt 283 and a second fixing bolt 284 located behind the first fixing bolt 283. The right side of the support substrate 282 is fixed to the fourth support plate 60 by a third fixing bolt 285 and a fourth fixing bolt 286 located behind the third fixing bolt 285.

The distance between the first fixing bolt 283 and the second fixing bolt 284 and the distance between the third fixing bolt 285 and the fourth fixing bolt 286 are preferably made as wide as possible in order to suppress vibration.
A control device 21 is installed at the center of the support substrate 282 in the body width direction. On the right side of the support substrate 282 and on the right side of the control device 21, a mounting portion 287 for attaching the accelerator device 33 is provided.

As shown in FIGS. 40, 41, 42, and 43, the accelerator device 33 includes an accelerator pedal 288, an accelerator bracket 289, a detection device 291, an interlocking mechanism 292, a swinging member 293, and a return spring 294. And an accommodation cover 295.
As shown in FIG. 40, the accelerator pedal 288 is an operation member that the operator steps on and is disposed behind the accommodation cover 295. The accelerator pedal 288 is supported in an inclined shape that moves upward as it goes forward.

  As shown in FIGS. 40 to 43, the accelerator bracket 289 includes a base plate 296, a front plate 297, a rear plate 298, a side plate 299, and a pivot 290. The base plate 296 has a plurality of fixing portions 300, 301, and 302 that are attached to the attaching portion 287 by bolts. The plurality of fixing parts include a first fixing part 300, a second fixing part 301, and a third fixing part 302. The first fixing part 300 is provided on the left front part of the base plate 296. The second fixing portion 301 is provided on the left rear portion of the base plate 296. The third fixing portion 302 is provided at the front-rear halfway portion on the right side of the base plate 296. The first fixing part 300, the second fixing part 301, and the third fixing part 302 are provided outside the accommodation cover 295. The front plate 297 is provided at the front portion of the base plate 296. The front plate 297 has a vertical wall 297a and an upper wall 297b. The vertical wall 297 a is erected on the front portion of the base plate 296. The upper wall 297b extends rearward from the upper end of the vertical wall 297a. The rear plate 298 is provided at the rear portion of the base plate 296. The rear plate 298 has a vertical plate portion 298a and an upper plate portion 298b. The vertical plate portion 298 a is erected on the rear portion of the base plate 296. The upper plate portion 298b is inclined so as to move upward as it goes forward from the upper end of the vertical plate portion 298a. A gap is provided between the rear end of the upper wall 297b of the front plate 297 and the upper end of the upper plate portion 298b of the rear plate 298. The upper plate portion 298b is provided with a hit 303. This hit 303 is a member that regulates the depression of the accelerator pedal 288 by the accelerator pedal 288 coming into contact when the accelerator pedal 288 is depressed. The side plate 299 connects the front left side of the vertical plate portion 298a and the left end of the vertical wall 297a.

  As shown in FIG. 42, the pivotal support portion 290 is configured by a plate material fixed to the rear surface of the vertical plate portion 298a of the rear plate 298 so as to protrude rearward. The pivot 290 is provided with a pedal shaft 304 having an axis in the body width direction. A pivot bracket 305 is provided at the lower front portion of the accelerator pedal 288. The pivot bracket 305 is pivotally supported on the pivot section 290 by a pedal shaft 304 so as to be rotatable about an axis in the body width direction. Thereby, the upper part of the accelerator pedal 288 can be stepped on (can swing). The back surface of the accelerator pedal 288 is a tread surface 288a.

The detection device 291 is a sensor that detects an operation amount (depression amount) of the accelerator pedal 288. The detection device 291 is configured by an angle sensor such as a potentiometer, for example. As shown in FIGS. 41 and 43, the detection device 291 is attached to an attachment block 306 fixed to the left side surface of the side plate 299. A lower portion of the detection device 291 is inserted through a first through hole 309 formed in the attachment portion 287. A mounting portion 308 to which a harness terminal is connected is provided below the detection device 291. As shown in FIG. 39, the second control device 27 is disposed below the left side of the support substrate 282. A harness connected to the attachment portion 308 is connected to the second control device 27. As shown in FIG. 43, the detection shaft 310 of the detection device 291 passes through the side plate 299. An interlocking shaft 311 is fitted to the detection shaft 310 so as to be integrally rotatable around an axis in the body width direction. The interlocking shaft 311 is rotatably supported by a pivot cylinder 312 fixed to the right side of the side plate 299. The interlocking shaft 311 is connected to the pivot tube 3
12 protrudes to the right. A rotating cylinder 313 is provided on the right side of the pivot cylinder 312. The rotating cylinder 313 is externally fitted to the interlocking shaft 311 so as to be rotatable around the axis. The interlocking shaft 311 protrudes rightward from the rotating cylinder 313.

  The interlocking mechanism 292 is a mechanism that interlocks the accelerator pedal 288 and the detection device 291. In other words, the interlocking mechanism 292 is a mechanism that transmits the operation amount of the accelerator pedal 288 to the detection device 291. As shown in FIGS. 41, 42, and 43, the interlock mechanism 292 includes a first link 314 and a second link 315. The first link 314 is connected to the detection device 291, and the second link 315 connects the accelerator pedal 288 and the first link 314.

  The first link 314 is formed of a plate material, and one end side (front part) is fixed to the right end side of the interlocking shaft 311. Accordingly, the first link 314 rotates integrally with the interlocking shaft 311 and the detection shaft 310. The second link 315 is formed by a rod member whose length can be adjusted. One end side (upper part) of the second link 315 is bent toward the outside of the body. One end side of the second link 315 is a first pivot 316 having an axis in the body width direction. On the other hand, a fixed piece 317 is provided on the front upper portion of the accelerator pedal 288. A connecting cylinder 318 having an axis in the body width direction is fixed to the fixed piece 317. A first pivot 316 is inserted through the connecting cylinder 318. Accordingly, one end side of the second link 315 is pivotally supported on the upper portion of the accelerator pedal 288.

  A ball joint 320 having a second pivot 319 is provided on the other end side (lower part) of the second link 315. The second pivot 319 is connected to the other end side (rear part) of the first link 314 so as to be rotatable about an axis in the body width direction. Thereby, the other end side of the second link 315 is pivotally supported on the other end side of the first link 314. As shown in FIGS. 42 and 43, the second link 315 is disposed on the side opposite to the tread surface of the accelerator pedal 288. As a result, the second link 315 is covered by the accelerator pedal 288.

  As shown in FIGS. 42 and 43, the swing member 293 is formed of a plate material. The swing member 293 has a base portion 293a and a stopper portion 293b. The base 293a is fixed to the right end side of the rotating cylinder 313. The base 293a is fixed to the first link 314 with a bolt 324. Therefore, the swing member 293 swings (integrated swing) together with the first link 314. The stopper portion 293b extends downward from the base portion 293a. The stopper portion 293 b is inserted through a hole portion 321 formed in the base plate 296 and an opening hole 322 formed in the attachment portion 287. The stopper portion 293b is in contact with the rear end of the hole portion 321, thereby restricting upward swing of the first link 314. The rear end of the hole portion 321 is a restricting portion 323.

  In this embodiment, the stopper portion 293b is formed separately from the first link 314. However, the first link 314 may also serve as the stopper portion 293b (the stopper portion 293b is a part of the first link 314). May be configured). In this case, the restricting portion is provided on the accelerator bracket 289. The first link 314 and the swing member 293 may be integrally formed from a single plate material.

  As shown in FIGS. 42 and 43, the return spring 294 is constituted by a torsion coil spring. The return spring 294 is disposed between the swing member 293 and the side plate 299. The return spring 294 is externally fitted to the pivot cylinder 312 and the rotary cylinder 313. One end of the return spring 294 is locked to the first link 314. The other end of the return spring 294 is locked to the lower end of the vertical wall 297a of the front plate 297. The urging force of the return spring 294 urges the first link 314 and the second link 315 and the upper portion of the accelerator pedal 288 to push up.

The housing cover 295 is a cover that houses the detection device 291, the interlocking mechanism 292, the return spring 294, and the swing member 293. The housing cover 295 is fixed to the front plate 297 and the rear plate 298 of the accelerator bracket 289 with bolts or the like and is removable. As shown in FIG. 40, the upper wall portion of the housing cover 295 has a first notch groove 325 for projecting the contact and a second link 315 for projecting and avoiding interference with the second link 315. A two-notch groove 326 is formed. The first notch groove 325 and the second notch groove 326 are formed continuously.

  39 to 43 show a state where the accelerator pedal 288 is not depressed. In this state, the stopper portion 293b is in contact with the restricting portion 323. When the accelerator pedal 288 is depressed from this state, the second link 315 is pushed down and the first link 314 swings downward. When the first link 314 swings downward, the interlocking shaft 311 and the detection shaft 310 rotate, and the operation amount of the accelerator pedal 288 is detected by the detection device 291. The detected operation amount of the accelerator pedal 288 is input to the second control device 27. Based on the input operation amount of the accelerator pedal 288, the second control device 27 controls the engine 28 and the HST pump 44. As a result, the vehicle speed of the wheel loader 1 becomes a vehicle speed corresponding to the operation amount of the accelerator pedal 288.

In the accelerator device 33 described above, the accelerator device 33 is attached to the accelerator bracket 289 in a state where the accelerator pedal 288, the detection device 291, the interlocking mechanism 292, the swinging member 293, the return spring 294, and the housing cover 295 are assembled. Can be attached to. As a result, the accelerator device 33 can be easily assembled.
In addition, the interlocking mechanism 292 includes the first link 314 connected to the detection device 291 and the second link 315 that connects the accelerator pedal 288 and the first link 314, whereby the interlocking mechanism 292 is configured. Can be simplified.

The stopper portion 293b that swings together with the first link 314 comes into contact with the restriction portion 323, whereby the first link 314 is restricted, thereby restricting the accelerator pedal 288 in a state where the depression with respect to the accelerator pedal 288 is released. Can do.
By configuring the stopper portion 293b with a part of the first link 314, the member can be shared.

Since the second link 315 is disposed on the side opposite to the tread surface of the accelerator pedal 288 and is covered with the accelerator pedal 288, the second link 315 can be prevented from being stepped on.
The accelerator bracket 289 includes the fixing portions 300, 301, and 302 that are attached to the attachment portion 287, and the fixing portions 300, 301, and 302 are provided outside the accommodation cover 295, so that the accommodation cover 295 is not removed. In addition, the accelerator device 33 can be detached from the attachment portion 287. Further, if only the wiring of the detection device 291 including the detection device 291 is removed, the accelerator device 33 that operates independently and mechanically can be removed.

  As shown in FIG. 44, a mounting base 327 that supports the constituent members of the control device 21 is attached to the support substrate 282. The column 23, the column cover 25 and the steering valve 24 shown in FIG. As shown in FIGS. 44 and 45, the hydraulic piping system 328 between the steering valve 24 and the steering cylinder 12 includes a relay block 329, a first hose 330, a second hose 331, a third hose 332, And a fourth hose 333.

  As shown in FIG. 46, the relay block 329 is inserted through a passage hole 334 formed in the support substrate 282. The lower part of the support stay 335 is fixed to the upper part of the front surface of the relay block 329. The upper part of the support stay 335 is attached to a mounting base 327. The relay block 329 has a block main body 336 formed in a square block shape. As shown in FIG. 45, a first connection port 337 and a second connection port 338 are provided on the upper surface side of the block main body 336. A third connection port 339 and a fourth connection port 340 are provided in the lower front portion of the block body 336.

As shown in FIG. 47, the first connection port 337 and the third connection port 339 are connected by a first communication path 341 that is an oil passage formed in the block body 336. The second connection port 338 and the fourth connection port 340 are connected by a second communication passage 342 that is an oil passage formed in the block main body 336.
As shown in FIG. 45, one end of the first hose 330 is connected to the first port 343 of the steering valve 24. The other end of the first hose 330 is connected to the first connection port 337. One end of the second hose 331 is connected to the third connection port 339. Second hose 33
The other end of 1 communicates with the rod side of the steering cylinder 12. One end of the third hose 332 is connected to the second port 344 of the steering valve 24. The other end of the third hose 332 is connected to the second connection port 338. One end of the fourth hose 333 is connected to the fourth connection port 340. The other end of the fourth hose 333 communicates with the bottom side of the steering cylinder 12.

  When one port of the steering valve 24 and the steering cylinder 12 are connected by a single hydraulic hose, the hydraulic hose must be largely bent after passing through the passage hole 334. For this reason, it is difficult to arrange the hydraulic hose for the steering 22. In the example shown in the drawing, the relay block 329 is used in the hydraulic piping system 328 between the steering valve 24 and the steering cylinder 12, so that the hydraulic hose can be easily arranged.

  As shown in FIGS. 48 and 49, the front frame 3 includes a first side frame 346, a second side frame 347, a first connection member 348, a second connection member 349, and a plate member 350. The first side frame 346 constitutes the left side of the front frame 3. The second side frame 347 constitutes the right side. The first side frame 346 and the second side frame 347 are arranged at an interval in the body width direction. The left lift arm 13L and the left lift cylinder 15L are pivotally supported by the first side frame 346. The right lift arm 13R and the right lift cylinder 15R are pivotally supported by the second side frame 347. The first connecting member 348 is made of a plate material, and connects the upper portions of the first side frame 346 and the second side frame 347. The second connecting member 349 is located at the upper part of the first connecting member 348 and connects the first side frame 346 and the upper part of the second side frame 347. A cylinder bracket 351 that pivotally supports the bucket cylinder 16 is fixed to the second connecting member 349.

  As shown in FIG. 49, the plate member 350 is disposed between the lower portions of the first side frame 346 and the second side frame 347. The plate member 350 connects the first side frame 346 and the second side frame 347. The plate member 350 has an opening 351 formed by an annular edge. As shown in FIG. 50, the upper part of the plate member 350 is inclined so as to move upward as it goes rearward. The lower part of the plate member 350 is along the up-down direction.

  As shown in FIG. 48, the capacitor unit 17 is attached to the upper part of the plate member 350. The capacitor unit 17 is attached along the upper slope of the plate member 350. Therefore, the capacitor unit 17 is provided in an inclined shape that moves upward as it goes rearward. As shown in FIG. 50, the capacitor unit 17 includes a unit cover 352, a capacitor bracket (bracket) 353, a capacitor 354, a capacitor fan 355, and a dust-proof net (referred to as a second dust-proof net) 356.

  The unit cover 352 is a member that covers the capacitor 354. The capacitor bracket 353 is attached to the front side of the plate member 350. The capacitor bracket 353 supports the capacitor 354 and the capacitor fan 355. The capacitor bracket 353 supports the capacitor 354 on the upper side and supports the capacitor fan 355 on the lower side. The capacitor 354 is an air conditioner capacitor 354. The condenser fan 355 is a fan that cools the condenser 354 and blows the generated wind to the condenser 354 (front). The condenser fan 355 passes through the opening 351 and is located on the rear side of the plate member 350. The second dust-proof net 356 is a member that is disposed between the capacitor 354 and the capacitor fan 355 and removes foreign matters such as dust and dust contained in the wind sent to the capacitor 354.

As shown in FIGS. 48 and 50, the unit cover 352 includes a main cover 357, a first side cover 358, and a second side cover 359. The main cover 357 has a front part 357a, an upper part 357b, and a lower part 357c. The front portion 357a is a portion corresponding to (facing) the capacitor 354, and is provided in parallel with the capacitor 354 at a predetermined interval. The upper part 357b is inclined with respect to the front part 357a, and the front part 35
The first connecting member 348 extends from the upper end of 7a. The lower portion 357c is inclined with respect to the front portion 357a, and extends from the lower end of the front portion 357a to the plate member 350. The first side cover 358 connects the left ends of the upper portion 357 b and the lower portion 357 c of the main cover 357. A space is provided between the first side cover 358 and the front portion 357a. The second side cover 359 connects the right ends of the upper portion 357 b and the lower portion 357 c of the main cover 357. A space is provided between the second side cover 359 and the front portion 357a. Accordingly, the wind that is blown from the condenser fan 355 and passes through the condenser 354 mainly escapes to the left and right of the front portion 357a. The first side cover 358 and the front portion 357a are connected by a first connecting stay 360. Further, the second side portion and the front portion 357a are connected by a second connecting stay 361.

  As shown in FIGS. 51 and 52, the capacitor bracket 353 has a mounting base 362 made of a plate material. The mounting base 362 is attached to the upper portion 357b of the plate member 350 by a plurality of bolts 363a to 363d. The capacitor bracket 353 has an upper left side and a right side and a lower left side and a right side attached to the plate member 350. A first insertion portion 364 through which the bolt 363b for attaching the lower left side of the capacitor bracket 353 is inserted is formed by an open groove below. Further, the second insertion portion 365 through which the bolt 363d for attaching the lower right side of the capacitor bracket 353 is inserted is formed by an open groove below.

  The attachment base 362 includes a plurality of first cover stays 366a and 366b to which the first side cover 358 is attached, and a plurality of second cover stays 366c and 366d to which the second side cover 359 is attached. By removing the unit cover 352 from the first cover stays 366a and 366b and the second cover stays 366c and 366d, maintenance of the capacitor 354 becomes possible. Therefore, the maintenance of the capacitor 354 can be easily performed from the upper side of the front frame 3.

The mounting base 362 is formed with a vent hole 368 through which the air blown from the condenser fan 355 passes. The ventilation port 368 is formed by an annular edge formed in the mounting base 362. A plurality of fan mounting portions 369 a to 369 d are provided on the peripheral edge portion of the ventilation port 368.
As shown in FIG. 53, the capacitor fan 355 includes a fan case 371 having a fan therein and a fan motor 372 for driving the fan. A plurality of fan fixing portions (fixing portions) 373 a to 373 d are provided on the outer peripheral portion of the fan case 371. The plurality of fan fixing portions 373a to 373d are provided corresponding to the plurality of fan mounting portions 369a to 369d. Fan fixing portions 373a to 373d are attached to the rear surfaces of fan attaching portions 369a to 369d. In other words, the capacitor fan 355 has a plurality of fan fixing portions 373a to 373d attached to the rear surface of the capacitor bracket 353. Therefore, the condenser fan 355 can be removed from the condenser bracket 353 to the rear side of the plate member 350.

  As shown in FIGS. 51 and 52, the attachment base 362 is provided with a plurality of capacitor attachment portions (attachment portions) 374a to 374d. The plurality of capacitor attaching portions 374a to 374d are formed of a block member having a screw hole (a hole in which a screw is cut). A capacitor 354 is attached to the capacitor attaching portions 374a to 374d. The capacitor attachment portions 374a to 374d are provided on the left upper portion, the left lower portion, the right upper portion, and the right lower portion of the attachment base 362.

As shown in FIG. 49, the opening 351 is offset to the left from the center Y of the front frame 3 in the body width direction. A plurality of piping members 375 and 376 are arranged on the left side of the opening 351. The plurality of piping members 375 and 376 include a first piping 375 and a second piping 376. The first pipe 375 and the second pipe 376 are pipes connected to the capacitor 354. The first pipe 375 is a pipe that guides the refrigerant from the compressor to the capacitor 354. The second pipe 376 is a pipe that sends the refrigerant from the condenser 354 to the air conditioner body through the receiver. The first pipe 375 is routed in the upper part on the left side of the opening 351. The second pipe 376 is routed in the lower part on the left side of the opening 351. The first piping 375 and the second piping 376 are routed from the rear surface side of the plate member 350 through the opening 351 to the front surface side of the plate member 350.

  As shown in FIGS. 51 and 52, a plurality of pipe-passing portions 377 and 378 are formed on the left side of the mounting base 362. The plurality of tube passing portions 377 and 378 include a first tube passing portion 377 and a second tube passing portion 378. The first pipe passage portion 377 is formed on the left upper portion of the mounting base 362 and at a position corresponding to the first pipe 375. The first pipe passage portion 377 is a part through which the first pipe 375 is passed. The second pipe passage portion 378 is formed at a position corresponding to the second pipe 376 on the lower left side of the mounting base 362. The second pipe passage part 378 is a part for allowing the second pipe 376 to pass therethrough.

  The first tube passage portion 377 is formed by a U-shaped notch whose upper side is open. The second pipe passing portion 378 is formed by a U-shaped notch whose lower side is open. Therefore, the attachment base 362 can be attached to the plate member 350 after the first piping 375 and the second piping 376 are arranged. Accordingly, the arrangement of the first pipe 375 and the second pipe 376 and the attachment of the capacitor bracket 353 can be easily performed.

  As shown in FIGS. 51 and 52, a guide wall 379 surrounding the ventilation hole 368 is provided on the front surface of the mounting base 362. The guide wall 379 includes a first guide wall 380 and a second guide wall 381. The first guide wall 380 has a first part 382, a second part 383, and a third part 384. The first portion 382 is located above the ventilation opening 368. The second portion 383 is located on the right side of the ventilation port 368. The third portion 384 is located below the ventilation port 368. The second guide wall 381 is located on the left side of the opening 351.

  As shown in FIG. 54, the guide wall 379 is provided with a plurality of placement plates 385 to 388. The plurality of placement plates 385 to 388 include a first placement plate 385, a second placement plate 386, a third placement plate 387, and a fourth placement plate 388. The first placement plate 385 is provided in the first part 382. The second placement plate 386 is provided in the second portion 383. The third placement plate 387 is provided in the third portion 384. The fourth placement plate 388 is provided on the second guide wall 381. As shown in FIGS. 50 and 55, the second dustproof net 356 is placed on the first to fourth placement plates 385 to 388.

  As shown in FIG. 54, the guide wall 379 is provided with a plurality of restriction plates 389 to 393. The plurality of restriction plates 389 to 393 include a first restriction plate 389, a second restriction plate 390, a third restriction plate 391, a fourth restriction plate 392, and a fifth restriction plate 393. The first restricting plate 389 is provided on the upper portion of the second portion 383. The second restriction plate 390 is provided below the second portion 383. The third restriction plate 391 is provided in the third portion 384. The fourth restriction plate 392 is provided on the upper part of the second guide wall 381. The fifth restriction plate 393 is provided below the second guide wall 381. The first restriction plate 389 and the second restriction plate 390 restrict the rightward movement and the forward movement of the second dustproof net 356. The third restriction plate 391 restricts the downward movement and forward movement of the second dust-proof net 356. The fourth restriction plate 392 and the fifth restriction plate 393 restrict the leftward movement and the forward movement of the second dustproof net 356. Therefore, the second dustproof net 356 is not restricted to move upward. Thereby, the second dustproof net 356 can be taken out upward (obliquely upward along the plate member 350) with respect to the capacitor bracket 353, and can be inserted into the capacitor bracket 353 from above. As shown in FIG. 50, between the upper end of the capacitor 354 and the first portion 382 of the first guide wall 380, an insertion portion 394 capable of inserting a second dustproof net 356 between the capacitor 354 and the capacitor fan 355, Has been.

As shown in FIGS. 54 and 55, the capacitor bracket 353 is provided with a plurality of capacitor receivers 395, 396 and 391. The plurality of capacitor receivers 395, 396, 391 include a first receiver 395, a second receiver 396, and a third restriction plate 391. The first receiver 395 is provided in the middle of the second part 383. The second receiver 396 is provided in the middle of the second guide wall 381. The third restriction plate 391 also serves as a capacitor receiver. The first receiver 395, the second receiver 396, and the third restricting plate 391 are provided with seal members 397a, 39.
7d and 397c are provided. As shown in FIGS. 50 and 56, a capacitor 354 is placed on the first receiver 395, the second receiver 396, and the third restriction plate 391 via seal members 397a, 397d, 397c.

  As shown in FIG. 56, the capacitor 354 includes a plurality of stay members and a plurality of pipe connection portions 401 and 402. The plurality of stay members include left stay members 398 a and 398 b provided on the left side of the capacitor 354 and a right stay member (not shown) provided on the right side of the capacitor 354. The stay member is provided corresponding to the capacitor attachment portions 374a to 374d. The left stay members 398a and 398b are attached to the capacitor attachment portions 374a and 374b via elastic members 399a and 399b. The right stay member is also attached to the capacitor attachment portions 374c and 374d via an elastic member. The plurality of pipe connection parts include a first pipe connection part 401 and a second pipe connection part 402. The first pipe connection unit 401 is connected to the first pipe 375. The second pipe connection unit 402 is connected to the second pipe 376.

In the capacitor unit 17 described above, the capacitor 354 can be easily maintained by providing the capacitor bracket 353 that supports the capacitor 354 on the front side and supports the capacitor fan 355 on the rear side.
Further, by providing a capacitor bracket 353 that supports the capacitor 354 on the front side and supports the capacitor fan 355 on the rear side, the capacitor bracket 353 is attached to the capacitor bracket 353 in a state where the capacitor 354 and the capacitor fan 355 are assembled. Can be attached to. As a result, the assembly of the capacitor 354 and the capacitor fan 355 can be facilitated. Further, by sharing the bracket for attaching the capacitor 354 and the bracket for attaching the capacitor fan 355, the member can be shared.

By forming an opening 351 through which the condenser fan 355 is inserted in the plate member 350 to which the condenser bracket 353 is attached, a unit composed of the condenser 354, the condenser fan 355 and the bracket can be accommodated in a compact manner.
Piping members 375 and 376 that are connected to the capacitor 354, and are provided with piping members 375 and 376 that are routed through the opening 351. Pipe portions 377 and 378 through which the piping members 375 and 376 pass are provided in the capacitor bracket 353. By forming, the piping members 375 and 376 can be arranged from the rear surface side of the plate member 350.

  The capacitor bracket 353 has capacitor attachment portions 374a to 374d for attaching the capacitor 354 on the front surface, and the capacitor fan 355 has the fan fixing portions 373a to 373d attached to the rear surface of the capacitor bracket 353, thereby attaching the capacitor 354. The condenser fan 355 can be removed later. Further, the capacitor 354 can be removed forward with the capacitor fan 355 attached. This facilitates maintenance of the capacitor 354.

  The capacitor bracket 353 has the insertion portion 394 into which the second dust-proof net 356 can be inserted between the capacitor 354 and the capacitor fan 355, so that the capacitor 354 and the capacitor fan 355 are attached to the capacitor bracket 353 and the second The dustproof net 356 can be attached or removed. Thereby, the maintenance of the 2nd dustproof net 356 can be performed easily.

In addition, a capacitor 354, a unit cover 352, a capacitor fan 355, and a second dustproof net 356 can be attached to the capacitor bracket 353, and one capacitor bracket 353 has a capacitor 354, a unit cover 352, a capacitor fan 355, and a second dustproof net. It functions as a bracket for the net 356.
As shown in FIGS. 57 and 58, the roof 30 of the cabin 4 includes an outer roof 403 that forms the outside of the roof 30, and an inner roof 404 that forms the interior side of the cabin 4. Between the outer roof 403 and the inner roof 404, an air conditioner main body 405 and a plurality of ducts 406, 407, and 408 are provided. The plurality of ducts include a first duct 406, a second duct 407, and a third duct 408. The air conditioner main body 405 includes an air conditioner case 409 that houses an evaporator and a blower fan. The air conditioner case 409 includes a first exhaust section 410, a second exhaust section 411, and a third exhaust section 412. The first air exhaust unit 410, the second air exhaust unit 411, and the third air exhaust unit 412 are portions that exhaust air (air conditioned air) conditioned by the air conditioner body 405 from the air conditioner body 405. The first air exhaust part 410 is provided on the left side of the front part of the air conditioner case 409. The second air exhaust 411 is provided on the right side of the front part of the air conditioner case 409. The third air exhaust part 412 is provided on the lower surface side of the front part of the air conditioner case 409. The first duct 406 is disposed on the left side of the air conditioner body 405. A front portion of the first duct 406 is connected to the first air exhaust portion 410. The second duct 407 is disposed on the right side of the air conditioner body 405. The front part of the second duct 407 is connected to the second air exhaust part 411. The third duct 408 is provided below the front part of the air conditioner body 405. The third duct 408 has an intake port 413 that takes in the conditioned air discharged from the third exhaust section 412 into the third duct 408. Therefore, conditioned air discharged from the air conditioner body 405 flows into the third duct 408.

  As shown in FIG. 59, the inner roof 404 includes a plurality of first outlets 416a and 416b, a plurality of second outlets 417a and 417b, a plurality of third outlets 418a and 418b, and a fourth outlet. 414 and the 5th blowing part 415 are provided. The plurality of first outlets 416 a and 416 b, the plurality of second outlets 417 a and 417 b, and the plurality of third outlets 418 a and 418 b are provided at the front portion of the inner roof 404. From the front part of the inner roof 404 toward the rear, the first blowing parts 416a and 416b, the second blowing parts 417a and 417b, and the third blowing parts 418a and 418b are provided in this order. That is, the second blowing portions 417a and 417b are disposed behind the first blowing portions 416a and 416b. In addition, third blowing portions 418a and 418b are arranged behind the second blowing portions 417a and 417b. The first outlets 416a and 416b are outlets that blow out the conditioned air forward and downward. The second outlets 417a and 417b are outlets that blow out the conditioned air downward. The third outlets 418a and 418b are outlets that blow out the conditioned air rearward and downward. The first outlets 416a and 416b, the second outlets 417a and 417b, and the third outlets 418a and 418b communicate with the third duct 408.

  The fourth blowout part 414 is provided on the left side of the rear part of the inner roof 404. The fifth blowing part 415 is provided on the right side of the rear part of the inner roof 404. The rear end of the first duct 406 is connected to the fourth blowing part 414. The rear end of the second duct 407 is connected to the fifth outlet 415. The 4th blowing part 414 and the 5th blowing part 415 are blower outlets which blow off the conditioned air downward and toward the inside of the machine body.

By providing a plurality of first outlets 416a and 416b, a plurality of second outlets 417a and 417b, and a plurality of third outlets 418a and 418b at the front of the inner roof 404, the air conditioning performance in the cabin 4 is improved. Can be made.
Further, a third duct 408 through which conditioned air flows is provided, and a plurality of first outlets 416a and 416b, a plurality of second outlets 417a and 417b, and a plurality of third outlets 418a and 418b are provided in the third duct 408. The structure can be simplified by communicating the.

  As shown in FIG. 60, in the wheel loader 1 of this embodiment, a connecting body 421 for connecting a backhoe 419 to the rear part of the machine body 2 can be attached. As shown in FIG. 5, a plurality of connection holes 420 a to 420 f are formed on the left and right sides of the rear wall 54 of the machine body 2. The connecting body 421 includes a connecting plate 422 that is fixed by bolts through connecting holes 420a to 420f, and a mounting plate 423 that protrudes rearward from the connecting plate 422. The backhoe body 424 is mounted on the mounting plate 423.

The backhoe 419 shown in FIG. 60 is a type of backhoe 419 in which a seat 425 is provided on the backhoe body 424. Not only this but the backhoe 419 of the type which also serves as the driver's seat 7 provided in the wheel loader 1 may be used.
As mentioned above, although this invention was demonstrated, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

2 Airframe 7 Driver's seat 33 Accelerator device 287 Mounting portion 288 Accelerator pedal 288a Tread surface 289 Accelerator bracket 290 Pivoting portion 291 Detection device 292 Interlocking mechanism 293b Stopper portion 294 Return spring 295 Accommodation cover 314 First link 315 Second link 323 Restriction portion 300 Fixed part (accelerator bracket)
301 Fixing part (accelerator bracket)
302 Fixed part (accelerator bracket)

Claims (6)

The aircraft,
A driver's seat provided on the aircraft,
A mounting portion provided in front of and below the driver seat;
An accelerator device attached to the attachment part;
With
The accelerator device is
An accelerator bracket attached to the attachment part;
An accelerator pedal supported by the accelerator bracket;
A detection device for detecting an operation amount of the accelerator pedal, the detection device supported by the accelerator bracket;
An interlocking mechanism for interlocking the accelerator pedal and the detection device;
A housing cover for housing the detection device and the interlocking mechanism, wherein the housing cover is attached to the accelerator bracket;
Work machine equipped with. The accelerator bracket has a pivot portion that pivotally pivots a lower portion of the accelerator pedal,
The interlocking mechanism is
A first link coupled to the detection device;
The work machine according to claim 1, further comprising a second link connecting the upper portion of the accelerator pedal and the first link. A stopper portion that swings together with the first link;
The work machine according to claim 2, wherein the accelerator bracket includes a restricting portion that restricts the first link by contacting the stopper portion in a state where the depression of the accelerator pedal is released.   The work machine according to claim 3, wherein the first link also serves as a stopper portion.   The work machine according to any one of claims 2 to 4, wherein the second link is disposed on a side opposite to a tread surface of an accelerator pedal and is covered with the accelerator pedal.   The work machine according to claim 1, wherein the accelerator bracket is a fixed portion that is attached to the attachment portion, and has a fixed portion that is provided outside the housing cover.

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