JP7458971B2 - work equipment - Google Patents

Description

The present invention relates to a working machine such as a combine harvester or a sugarcane harvester, and more particularly to a working machine equipped with a cabin that covers a driving section.

A cabin used in a work vehicle has a structure in which the driving part is surrounded by a side wall and the upper part is covered by a roof part.The roof part has an inner roof located on the driving space side and a roof part located outside. There is one in which a hollow outer roof is provided, and an air conditioner is provided in a space surrounded by the inner roof and the outer roof (for example, see Patent Document 1).
Conventionally, such an outer roof mounting structure has been configured to be connected to the cabin frame from a space on the inside of the cabin (for example, see Patent Document 2).

Japanese Patent Application Publication No. 2015-65887 Japanese Patent Application Publication No. 11-11347

In the cabin with the above configuration, for example, when performing maintenance on the air conditioner, it is necessary to remove the outer roof, and the work to disconnect the outer roof and the cabin frame must be performed in the space inside the cabin. become. When the connection between the outer roof and the cabin frame is released, the outer roof becomes free. However, since the worker is inside the cabin at that time, the outer roof cannot be supported, and there is a risk that the outer roof may become unstable and fall outward. Furthermore, when installing the outer roof, there is a disadvantage that it is difficult to perform the outer roof positioning work and the connecting work at the same time.

Therefore, it has been desired to make it easier to attach and detach the outer roof.

A characteristic configuration of the combine according to the present invention includes an operating section and a cabin that covers the operating section, and the cabin includes a cabin frame that supports the entire cabin, a peripheral wall section that covers the periphery of the operating section, a roof part that covers an upper part of the driving section, and the roof part includes an outer roof located on the outside, an inner roof located on the inside and fixed to the cabin frame, and the outer roof and the inner roof. an air conditioner housed between and fixed to the inner roof , the outer roof being configured by joining an upper part forming an upper surface side and a lower part forming a lower surface side; A mounting portion for attaching the outer roof to the cabin frame is provided in a state exposed to the outside of the cabin, and the mounting portion is fixed to the lower side portion of the outer roof, and the mounting portion is fixed to the lower side portion of the outer roof. The air conditioner is extended from the top to the top and connected to the upper part of the outer roof, and when the outer roof is removed from the attachment part, the air conditioner fixed to the inner roof is exposed.

According to the present invention, since the attachment part for attaching the outer roof is exposed to the outside of the cabin, when an operator removes or reinstalls the outer roof, the attachment/detachment work to the attachment part is done from the outside. I can do it. At this time, even if the outer roof is in a free state, the worker can easily support the outer roof while holding it with his/her hands, making it easier to work.

Therefore, even if it is necessary to remove the outer roof in the cabin, it is possible to easily perform the work of attaching and detaching the outer roof.
Further, according to the present invention, since the outer roof is constructed by joining the upper part and the lower part, a hollow part can be provided between the upper part and the lower part, so that the inside and outside of the cabin can be connected. This will improve the insulation effect between the two. In an outer roof with such a configuration, there is a risk that the joint between the upper and lower parts may become weak, and for example, the joint between the upper and lower parts may become separated due to aircraft vibration or strong winds. It is possible to do so. Therefore, in the present invention, the attachment part is configured to extend from the lower part to the upper part of the outer roof and to be connected to the upper part of the outer roof. With this configuration, even if the joint between the upper and lower parts separates for some reason, disadvantages such as the upper part separating and coming off outward can be prevented. can.

In the present invention, it is preferable that the cabin frame is provided with a roof frame extending along the periphery of the roof portion and multiple vertical frames extending in the vertical direction, the outer roof is provided with a protruding portion that protrudes outward beyond the roof frame, and the mounting portion is provided below the protruding portion.

According to this configuration, the outer roof is provided with an overhanging portion, and the roof frame and mounting portion are provided below the overhanging portion. As a result, it is possible to prevent rain from falling on the roof frame and mounting portion, and early corrosion of the mounting portion is prevented, thereby improving durability.

FIG. 1 is an overall side view of a sugarcane harvester. FIG. 2 is an overall plan view of the sugarcane harvester. It is a front view of a sugarcane harvester. FIG. 4 is a perspective view showing a state in which the outer roof has been removed. FIG. 3 is a longitudinal sectional side view of the first attachment part. FIG. 4 is a vertical cross-sectional side view of the second mounting portion. FIG. 7 is a rear view of the vicinity of the second attachment part. FIG. 3 is a longitudinal side view of the cabin. FIG. 3 is a vertical side view of the roof portion. FIG. 3 is a vertical side view of the rear portion. FIG. 3 is a cross-sectional plan view of the vicinity of the front pillar.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a sugarcane harvester according to the present invention will be described based on the drawings.

〔overall structure〕
1 and 2 are diagrams showing the entire sugarcane harvesting machine, with FIG. 1 being a side view and FIG. 2 being a plan view. In this embodiment, the direction indicated by symbol (F) in FIGS. 1 and 2 is the front side of the fuselage, and the direction indicated by symbol (B) is the rear side of the fuselage. The direction indicated by the symbol (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by the symbol (R) in FIG. 2 is the right side of the aircraft.

The sugarcane harvester includes front wheels 1 as left and right front running devices that can be steered, and rear wheels 2 as left and right rear running devices that cannot be steered and are rotatably driven. It is configured as a wheel running type that can be moved by driving.

The machine body includes a driving section 3, a reaping section 4 that reaps the planted crops, a topper 5 that cuts off the upper leaf part of sugarcane, and a topper 5 that transports the crops harvested by the reaping section 4 rearward and upward. A feeder 6 as a conveyance device, a separation device 7 that separates the crops (sugarcane) and foreign substances conveyed by the feeder 6, and a separation device 7 that separates the crops (sugarcane) and foreign matter that are conveyed by the feeder 6, and a separation device 7 that separates the crops (harvested products) from the foreign matter to the outside of the machine and diagonally upward. A discharge conveyor 8 for conveying and discharging the aircraft, and an engine 9 for supplying power to each part of the aircraft body are provided.

The driving section 3 is provided at a high position at the front of the aircraft body, and is surrounded by a cabin 10. Although not shown, the interior of the cabin 10 is equipped with a driver's seat, a steering wheel, an operation panel, and the like. The left and right side surfaces of the cabin 10 are each formed as a door that can be opened and closed. The cabin 10 will be explained later.

The reaping section 4 is provided at the front lower part of the machine body. The reaping section 4 is equipped with left and right weeding devices 11 that divide and guide the crops to be harvested among the planted crops, and a reaping header 12 that reaps the crops to be planted in the field and sends them rearward. .

The left and right grass dividing devices 11 are equipped with a vertically oriented grass dividing rotor 13 that is driven to rotate. The left and right grass dividing devices 11 are supported on the machine frame 15 via a link mechanism 14 so that they can be raised and lowered.

The reaping header 12 has left and right side walls 17 (see FIG. 2) provided so as to be connected to the rear of the left and right weed splitting devices 11, and the crop is placed in a forward position in an area sandwiched between the left and right side walls 17. A roller (not shown) that pushes the crop downward and scrapes it backward, a cutting device 18 that cuts the base of the crop, and the like are provided. The cutting device 18 is located behind the left and right weeding devices 11 and includes a pair of left and right rotary cutters that rotate around the vertical axis.

As shown in FIG. 2, the feeder 6 has a conveyance width that is approximately the same as the distance between the left and right side walls 17 of the reaping header 12, and is provided at a low position where the conveyance start end continues behind the cutting device 18. The feeder 6 is provided in an upwardly inclined position so as to convey the crops toward the upper rear of the machine body. The feeder 6 as a whole has a highly rigid structure that forms a substantially rectangular cylindrical conveyance path.

Inside the feeder 6, scraping rotors are provided at appropriate intervals along the conveying direction between the left and right side walls 17, although not shown, on both the upper and lower sides of the crop transfer path. The scraping rotors are driven to rotate in opposite directions to each other, and are configured to sandwich the harvested material therebetween and convey it rearward.

Feeder 6 is designed to chop the long crops being transported at the end of the transport so that they are of a length that is easy to handle when discharged onto the transport truck.

Although not shown, the separation device 7 is equipped with a fan that rotates around the vertical axis, and the ventilation effect of the fan separates fine stem culm debris and leaf fragments contained in the crops discharged from the conveyance end of the feeder 6. and other impurities are separated and discharged to the outside. That is, the crops discharged from the rear end of the feeder 6 are subjected to the suction action of the fan while being discharged, and relatively light foreign substances such as fine stem culm waste and leaf fragments are sucked upward, and the crops are removed from the outside. It is discharged in the opposite direction. Crops (sugar cane), which are heavier than foreign objects, are not sucked up by the fan and fall straight down.

Directly below the separator 7 and below the rear end of the feeder 6, a receiving hopper 19 is provided to receive and collect the crops discharged downward from the feeder 6. The crops received by the receiving hopper 19 are discharged to the conveying start end of the discharge conveyor 8.

The discharge conveyor 8 is supported in its entirety by a conveyor support frame 20 attached to the rear of the machine frame 15, and extends from the rear lower part of the machine toward the outside and upward of the machine. The discharge conveyor 8 is driven by a hydraulic motor (not shown), which holds and transports the crops, and drops and discharges them from the end of the transport onto the bed of a transport truck.

〔cabin〕
The cabin 10 will be explained.
As shown in FIG. 2, the cabin 10 includes a cabin frame 21 that supports the entire cabin 10, a peripheral wall part 22 that covers the periphery of the driving part 3, and a roof part 23 that covers the upper part of the driving part 3. . The peripheral wall portion 22 includes a windshield 24 located at the front, left and right door portions 25, and a rear surface portion 26. As shown in FIGS. 4 and 8, the cabin frame 21 includes left and right front pillars 27 and left and right rear pillars 28 as vertical frames extending vertically, and a rectangular roof frame 29 located around the roof part 23. , is equipped with.

The door portion 25 is swingably supported with respect to the front pillar 27 by a hinge provided on the front side. The left and right door sections 25 are made of glass whose outer peripheries are surrounded by a support frame.

As shown in FIG. 1, a masking part 31 for dimming light is printed on the lower area of the glass of the door part 25 to soften sunlight from the outside. Although not shown in the drawings, the upper portion of the masking portion 31 has a larger percentage of transparent area so that the cutting situation can be easily checked visually. On the lower side of the masking part 31, the proportion of the area that can be seen through is small, increasing the light attenuation rate.

A windshield 24 located at the front of the cabin 10 extends from the lower surface of the roof section 23 to a position close to the floor surface of the driving section 3. The windshield 24 is tilted forward when viewed from the side. The windshield 24 is provided across the left and right front pillars 27, and has a curved shape such that the left and right center portions of the cabin 10 bulge out forward with respect to the left and right end portions of the cabin 10 in plan view. It becomes.

The left and right front pillars 27 are constructed using square pipe material. As shown in FIG. 11, the side surface of the front pillar 27 is a plane extending in the longitudinal direction of the aircraft, and the front surface of the front pillar 27 is provided as a plane extending in the lateral direction of the aircraft. With this configuration, the hinge or the weather strip 30 or the like for the door section 25 can be easily attached to the front pillar 27 in an appropriate attitude with respect to the orientation of the door section 25.

As described above, the windshield 24 has a curved shape in which the left and right center portions bulge forward, so it cannot be directly bonded to the front surface of the front pillar 27. Therefore, as shown in FIG. 11, a relay support member 32 having a receiving surface in an inclined position along the curved surface of the windshield 24 is provided, and the windshield 24 is adhesively fixed to the receiving surface 32a of the relay support member 32. . The relay support member 32 is fixed to the front pillar 27 by welding.

As shown in FIG. 3, in front of the windshield 24 of the cabin 10, there is a structure to protect the windshield 24 etc. from being damaged even if the planted sugarcane comes into contact with force during sugarcane harvesting. A protection member 33 is provided. A plurality of protection members 33 are provided at intervals in the vertical direction. The protection member 33 is made of a metal bar so as not to block the driver's view.

The plurality of protection members 33 extend across the left and right front pillars 27 and are fixed to the left and right front pillars 27 by bolt connection. The front part of the roof part 23 is provided with left and right work lights 34. The uppermost protection member 33 is located in front of the work light 34 so as to protect the left and right work lights 34. The connection position of the protection member 33 to the front pillar 27 is configured to be changeable vertically within a predetermined range by making the bolt insertion hole into an elongated hole.

The left and right front pillars 27 are provided at the left and right outer parts of the upper side with a rearview mirror 35 and a metal mirror cover 36 that protects the rearview mirror 35 from the sugar cane planted therein. The rearview mirror 35 is supported in a fixed position by a rod-shaped mirror frame 37 that extends in a substantially C-shape when viewed from the front. The outer surface of the front pillar 27 is provided with a support frame 38 that extends long in the vertical direction and has upper and lower ends connected to the front pillar 27. The mirror frame 37 is supported by the support frame 38 so that it can swing around a vertical axis. The mirror cover 36 is formed in a plate shape that widely covers the front area of the rearview mirror 35, and is supported in a fixed position by the mirror frame 37. As shown in FIG. 2, the mirror cover 36 is provided in an inclined position so that the front side surface is located further rearward as it approaches the lateral outer side. Also, as shown in FIG. 3, the lower edge of the mirror cover 36 is provided in an inclined position so that the lateral outer side is located higher and the lateral inner side is located lower.

The rearview mirror 35 and the mirror cover 36 can be used in two positions, one in which the driver manually swings the mirror frame 37 around the vertical axis (see Fig. 3), and the other in which the rearview mirror 35 and the mirror cover 36 extend outward on the lateral side (see Fig. 3). The position can be changed integrally to a retracted position (not shown) in which it is retracted to the side.

As shown in FIG. 8, the rear section 26 of the cabin 10 includes a window section 39 having transparent glass at the upper part, and a wall section 40 having a two-layer structure at the lower part. The wall portion 40 is provided with a front plate 41 extending over the entire surface of the wall portion on the front side, and is provided with a rear plate 42 divided into upper and lower halves on the rear side. As shown in FIG. 10, the front plate 41 and the rear plate 42 are connected to each other via a plurality of spacer members 43 so as to form a gap in the front-rear direction. A heat insulating material 44 is housed between the front plate 41 and the rear plate 42 to prevent hot air from the engine 9 from being transmitted to the operating section 3. Reinforcing bent portions 45 are formed at appropriate locations on the rear plate 42.

As shown in FIG. 8, the roof portion 23 includes an outer roof 46 located on the outside, an inner roof 47 located on the inside, and an air conditioner 48 housed between the outer roof 46 and the inner roof 47. is provided.

The outer roof 46 is made of a resin material by blow molding or the like. The upper part 46A of the outer roof 46 has a shape that gently bulges upward, and the lower part 46B of the outer roof 46 has a shape in which the center part is recessed upward. The inner roof 47 has a concave shape with a central portion recessed upward.

A large space is formed in front of the inner roof 47 in the area surrounded by the inner roof 47 and the outer roof 46, and an air conditioner 48 is installed in this space.
Although not shown, in the area surrounded by the inner roof 47 and the outer roof 46, on the left and right sides of the inner roof 47, there are ventilation ducts that provide ventilation from the air conditioner 48 to the interior of the operating section 3. is provided.

The inner roof 47 is divided into two parts, a front roof part 47A and a rear roof part 47B. As shown in FIG. 9, the front roof part 47Aa and the rear roof part 47B are divided at a dividing part 47C in the middle of the front and rear, and at the joint, a part of the front roof part 47A and a part of the rear roof part 47B are connected in a state where they overlap vertically. A sealant is interposed at the overlapping parts to improve airtightness. The inner roof 47 is connected to the roof frame 29 at multiple points on the outer periphery with bolts, and the parts where the front roof part 47A and the rear roof part 47B overlap vertically are connected to the support frame 38 that is installed across the roof frame 29 with bolts (see FIG. 4).

The outer roof 46 is configured by joining an upper side part 46A forming an upper surface side and a lower side part 46B forming a lower surface side. The outer roof 46 having such a configuration may peel off due to vibrations of the aircraft, strong winds, etc. if the joint strength is slightly low at the joint between the upper part 46A and the lower part 46B.

It is configured such that only the outer roof 46 can be removed from the cabin 10 and reattached when performing maintenance work on the air conditioner 48 or the like. At that time, the outer roof 46 can be removed and installed from outside the cabin 10.

That is, mounting portions 49 for attaching the outer roof 46 to the cabin frame 21 are provided in a state exposed to the outside of the cabin 10. The outer roof 46 is provided with overhanging portions 50 on both the front and rear sides and the left and right sides that overhang further outward than the roof frame 29. The mounting portions 49 are provided below the overhanging portions 50.

The attachment portion 49 of the outer roof 46 to the roof frame 29 includes a first attachment portion 51 that connects the lower side portion 46B of the outer roof 46 to the upper portion of the roof frame 29 below the overhang portion 50; , a second attachment that connects the lower part 46B of the outer roof 46 to the upper part of the roof frame 29, extends from the lower part to the upper part of the outer roof 46, and connects the upper part 46A of the outer roof 46. A section 52 is provided.

As shown in FIG. 4, two first mounting portions 51 and one second mounting portion 52 are provided on both left and right sides of the roof frame 29. Two first attachment portions 51 are provided on the front side, and two first attachment portions 51 and one second attachment portion 52 are provided on the rear side. Note that the number of attachment points for the first attachment part 51 and the second attachment part 52 is not limited to these numbers, and can be changed and implemented as appropriate.

As shown in FIG. 5, the first attachment part 51 is provided with a first connection member 53 formed by bending a band-shaped plate into a substantially L-shape. A lower portion 53a of the first connecting member 53 is welded and fixed to the outer peripheral surface of the roof frame 29. The upper portion 53b of the first connecting member 53 is bolted to the bottom surface of the lower portion 46B of the outer roof 46 while being abutted from below. The bolt 54 is mounted upward from the lower side of the first connecting member 53. A nut 55 is embedded in the outer roof 46 at a location where the bolt 54 is attached. By fastening the bolts 54 and nuts 55, the first connecting member 53 and the outer roof 46 are connected.

As shown in FIG. 6, the second mounting portion 52 is provided with a second connecting member 56 formed by bending a strip-shaped plate into a substantially Z-shape. The second connecting member 56 has a vertically oriented lower end portion 56A welded to the outer periphery of the roof frame 29. The horizontally oriented intermediate portion 56B, which is bent into a substantially L-shape to join the lower end portion 56A, is connected to the outer roof 46 by an upwardly attached bolt 54 and an embedded nut 55, just like the first connecting member 53.

The second connecting member 56 extends upward from the intermediate portion 56B. The second connecting member 56 extends to a horizontal surface portion 46C that is a joint between the upper side portion 46A and the lower side portion 46b of the outer roof 46 and is provided in a horizontal position. The upper end portion 56C of the second connecting member 56 is bent into a substantially L shape and is provided in a horizontal position. A shaft member 60 that protrudes upward is fixedly provided at the upper end portion 56C of the second connecting member 56. The shaft member 60 is inserted upward through an insertion hole 61 formed in a horizontal surface portion 46C of the outer roof 46. A retaining pin 62 is provided that passes through the horizontal surface portion 46C and extends laterally to the shaft member 60 that projects upward.

As shown in FIG. 7, a shaft member 64 in a horizontal position is provided on a bracket 63 fixed to the roof frame 29 at a position near the second attachment part 52 at the rear side of the cabin 10. A locking portion 65 is provided on the side and extends integrally from the lower portion 46B of the outer roof 46. The shaft member 64 is inserted through the locking portion 65, and a retaining pin 66 is provided that passes through the locking portion 65 and penetrates the shaft member 64 that protrudes laterally.

By configuring it in this manner, for example, when performing maintenance work on the air conditioning unit 48, the outer roof 46 can be removed from the outside of the aircraft by releasing the bolt connection between the multiple first mounting portions 51 and the multiple second mounting portions 52.

Even if the upper part 46A and the lower part 46B of the outer roof 46 are separated at the joint while the aircraft is moving, the upper part 46A is fixed by the locking action of the vertical shaft member 60. It can prevent it from coming off. Furthermore, even if the bolts 54 of the first attachment part 51 and the second attachment part 52 loosen and come off while the aircraft is moving, the entire outer roof 46 is secured by the locking action of the horizontal shaft member 64. It can prevent it from coming off.

The present invention is applicable not only to sugarcane harvesters but also to other working machines such as combines and tractors.

3 Operating section 10 Cabin 21 Cabin frame 22 Peripheral wall section 23 Roof section 27, 28 Vertical frame 29 Roof frame 46 Outer roof 46A Upper section 46B Lower section 47 Inner roof 48 Air conditioner 49 Mounting section 50 Overhang section

Claims (2)

A driving part and a cabin covering the driving part are provided,
The cabin includes a cabin frame that supports the entire cabin, a peripheral wall that covers the driving section, and a roof that covers the top of the driving section,
The roof portion includes an outer roof located on the outside, an inner roof located on the inside and fixed to the cabin frame, and an air conditioner stored between the outer roof and the inner roof and fixed to the inner roof. and,
The outer roof is configured by joining an upper side part forming an upper side and a lower side part forming a lower side,
A mounting portion for mounting the outer roof on the cabin frame is provided in a state exposed to the outside of the cabin,
The attachment part is fixed to the lower side part of the outer roof, and extends from the lower part to the upper part of the outer roof and connected to the upper part of the outer roof,
A work machine in which the air conditioner fixed to the inner roof is exposed when the outer roof is removed from the attachment portion. The cabin frame includes a roof frame extending along the periphery of the roof portion and a plurality of vertical frames extending in the vertical direction,
The outer roof is provided with an overhang that overhangs outward from the roof frame,
The working machine according to claim 1, wherein the mounting portion is provided below the projecting portion.

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