CN113796210A - Working machine, working vehicle, and canopy for working machine - Google Patents

Abstract

A working machine is provided with a fuel tank (40) at the rear part of a traveling machine body, a refueling auxiliary table (7) capable of placing a refueling container is arranged behind the fuel tank (40), and the refueling auxiliary table (7) is configured to be capable of switching an installation posture on the traveling machine body to a use state in which a placing surface faces upward and a storage state in which the placing surface is located at a position facing a rear wall of the fuel tank (40).

Description

Working machine, working vehicle, and canopy for working machine

Technical Field

The invention relates to a working machine, a working vehicle and a canopy for the working machine.

Background

(1) The work machine has the following structure: the traveling machine body is provided with a fuel tank at the rear part thereof, and a refueling auxiliary platform capable of placing a refueling container is provided behind the fuel tank.

As a working machine including a fuel tank and a refueling auxiliary stand for supporting the weight of a refueling receptacle used when refueling the fuel tank as described above, there are the following configurations [ a ] and [ B ].

[A] The fuel assist table located in the vicinity of the fuel filler port is supported on the body frame so as to be swingable about a lateral axis along the left-right direction of the traveling body, and is configured so as to be switchable between a use posture in which the placement surface is directed upward and projects toward the rear side of the body and a posture in which the placement surface is raised and stored (see patent document 1).

[B] The fuel assist table located in the vicinity of the fuel filler port is configured by bending a tubular member, and is supported so as to be capable of swinging and sliding about a horizontal axis along the left-right direction of the traveling machine body, and is configured so as to be capable of switching between a use posture in which the placement surface is directed upward and protrudes toward the rear side of the machine body, and a posture in which the placement surface is raised and stored (see patent document 2).

(2) Further, the work vehicle includes: a radiator that cools cooling water of an engine; a cooling fan which is arranged inside the body with respect to the radiator and cools the radiator; and a dust-proof box which has a dust-proof net covering the outer side of the body of the radiator in a state of allowing ventilation and preventing dust from passing through, and can swing in an open manner.

For example, patent document 3 discloses a conventional work vehicle. This work vehicle includes an air-cooled cooling device (an "oil cooler" in patent document 3) located between a dust screen (an "air intake portion" in patent document 3) and a radiator. The air-cooled cooling device is configured to be capable of opening movement in the same direction as the opening movement direction of the dust box. Specifically, the structure for the open movement of the dust box is used in both the structure for the open movement of the air-cooled cooling equipment.

(3) In addition, some work machines include a work machine canopy that covers an upper portion of a cab of the work machine.

A conventional canopy for a working machine is configured to include a roof portion integrally formed of a hard synthetic resin material at an upper portion of a support column supported by a machine body of the working machine (see, for example, patent document 4).

Patent document 1: japanese patent application laid-open No. h 11-243753 (see paragraph "0021" and "fig. 2" and "fig. 4" of the drawings).

Patent document 2: japanese patent laid-open No. 2007 and 269160 (see paragraphs "0009", "0018" and "fig. 1", "fig. 2", "fig. 3", and fig. 7 "of the drawings).

Patent document 3: japanese patent laid-open No. 2014-125106.

Patent document 4: japanese patent application laid-open No. 2011-120512.

Problems to be solved by the invention

(1) The following problems are associated with the background art (1).

In the structures shown in patent documents 1 and 2, the posture of the auxiliary oil supply table can be switched, and thus the structure is useful in that the area on the traveling machine body can be effectively used without using the auxiliary oil supply table.

However, these refueling auxiliary stands are provided in the vicinity of the refueling port apart from the position of the fuel tank, and in the stored state, they stand up only on the rear side of the machine body, and therefore do not function particularly.

The invention can more effectively utilize the oil supply auxiliary table.

(2) Further, the following problems are associated with the background art (2).

In the above-described conventional technique, the dust box and the air-cooled cooling equipment are received by the same support structure, and therefore, the load acting on the support structure increases. If the supporting structure for opening and moving the dust box is damaged, the following problems may occur: the open movement of the dust box and also of the air-cooled cooling device is no longer possible.

In view of the above circumstances, it is desirable to provide a work vehicle capable of appropriately performing an open movement of an air-cooled cooling equipment regardless of a support structure for the open movement of a dust box.

(3) Further, the following problems are associated with the background art (3).

In the above-described conventional structure, since the roof portion of the canopy is integrally formed of a hard synthetic resin material, for example, when the roof portion of the canopy is damaged by contact with another object or the like, the roof portion is broken and divided into a plurality of pieces, and it may be difficult to repair the roof portion. As a result, it is necessary to replace the entire top cover portion with a new member or the like, which is disadvantageous in terms of cost, and it is difficult to perform a replacement work for repair, replacement, or the like.

The invention aims to provide a canopy for a working machine which is advantageous in terms of cost and can be easily replaced, and a working machine with the canopy.

Disclosure of Invention

(1) The means for solving the problem (1) is as follows.

The invention is characterized in that a fuel tank is arranged at the rear part of the traveling machine body; a refueling auxiliary platform arranged at the rear of the fuel tank and used for placing a refueling container; the fueling auxiliary stand is configured to be capable of switching an installation posture on the travel machine body to a use state in which a mounting surface faces upward and a storage state in which the mounting surface is located at a position facing a rear wall of the fuel tank.

According to the present invention, since the posture of the refueling auxiliary stand can be switched between the use state in which the placement surface faces upward and the storage state in which the placement surface is located at a position facing the rear wall of the fuel tank, the refueling auxiliary stand can be used conveniently and can be stored in a state not to be an obstacle when not in use.

Further, since the mounting surface is located at a position facing the rear wall of the fuel tank in the stored state, the mounting surface can also function as a protective member for the rear wall of the fuel tank, and the refueling auxiliary stand can be used more effectively.

In the present invention, it is preferable that the fuel tank is disposed between the grain storage portion and the threshing portion at a rear position of the traveling machine body.

By providing this configuration, the space between the grain storage part and the threshing part can be effectively used, and the fuel tank can be arranged in a state of good space utilization efficiency in the body of the bicycle.

In the present invention, it is preferable that the fuel tank is placed on and supported by a body frame of the traveling body, and the refueling auxiliary stand is provided such that the placement surface is located between an upper surface and a lower surface of the fuel tank in a use state.

With this configuration, the refueling auxiliary stand is supported on the fuel tank at a position where the refueling operation to the fuel tank is easy, and the fuel is easily supplied in a relatively easy posture.

In the present invention, it is preferable that the refueling auxiliary stand is configured to be rotatable about a lateral axis core along a lateral direction of the traveling machine body, and to be rotatable from a use state about the lateral axis core downward to be brought into a storage state in which the placement surface faces a lower portion of the rear surface of the fuel tank.

With this configuration, when the refueling auxiliary stand is switched to the storage state, the lower rear side of the fuel tank can be protected by the refueling auxiliary stand.

In the present invention, it is preferable that a grain box as a grain storage part is provided at a rear position of the traveling machine body; an unloader for discharging grains is arranged behind the grain box; a pillar frame for supporting the unloader is erected from the body frame of the traveling body; the oil supply auxiliary table is supported by the pillar frame.

By providing this aspect, the oil supply auxiliary table can be firmly supported by the pillar frame supporting the unloader with a simple structure.

In the present invention, it is preferable that the fuel tank is disposed in a state of extending rearward from a rear end portion of the body frame of the travel body; a protection member which is located below a projecting portion of the fuel tank on the rearward side and protects the rear portion of the fuel tank; the protection member includes a pair of right and left rear extension frames extending rearward from the rear end of the body frame, and a lateral frame connecting the rear ends of the rear extension frames to each other, and the lateral frame is located below a free end of the auxiliary oil supply table switched to the storage state.

With this configuration, even in a state where the fuel tank having a large capacity is extended rearward from the rear end portion of the body frame, the lower side of the fuel tank can be reliably protected by the protective member, and when the refueling auxiliary stand is switched to the storage state, the rear portion of the fuel tank is protected by the refueling auxiliary stand and the protective member, and the refueling auxiliary stand can easily avoid contact with another object from the lower side by the protective member.

In the present invention, it is preferable that a grain tank for storing grains is provided adjacent to the fuel tank; a concave part is formed on the wall surface of one side opposite to the fuel tank in the grain tank; the fuel tank is disposed in the recessed portion.

In the grain tank according to the present invention, the fuel tank is disposed in the recessed portion, and the fuel tank is disposed in the recessed portion.

Therefore, there is an advantage that the capacity of the fuel tank can be increased while avoiding an increase in size of the body frame.

In the present invention, it is preferable that the grain tank and the fuel tank are respectively supported by a body frame; the concave part is arranged at the lower part of the grain box.

Through possessing this scheme, have following advantage: the grain tank and the fuel tank can be stably supported by the machine body frame, and the space for arranging the fuel tank can be expanded by enlarging the space between the lower part of the grain tank and the machine body frame by the concave part arranged at the lower part of the grain tank.

In the present invention, it is preferable that a downwardly narrowed inclined portion is formed below the grain box, and the recessed portion is formed in the downwardly narrowed inclined portion.

In the grain tank according to the present invention, the recessed portion is formed in the inclined portion that is narrowed downward below the grain tank, so that the space on the lower side of the grain tank can be effectively utilized, and the recessed portion can be easily formed in a state in which the inclined portion is also narrowed downward. Therefore, it is advantageous in that the concave portion is easily formed without preventing the grain in the inside of the grain box from flowing down.

In the present invention, it is preferable that the recessed portion is formed only in a portion of the grain tank where the fuel tanks overlap in a plan view.

In the above configuration, the recessed portion formed in the grain tank is formed only in a portion where the fuel tanks overlap in a plan view, and therefore, it is sufficient to reduce the capacity in the grain tank to the minimum necessary due to the formation of the recessed portion. This has the advantage that the fuel tank capacity can be increased and the grain tank capacity can be reduced.

In the present invention, it is preferable that the fuel tank is formed in a shape along the shape of the recessed portion.

By providing this aspect, the fuel tank is shaped along the shape of the recessed portion, so that the possibility of generating wasted space is reduced on both the fuel tank side and the grain tank side, and there is an advantage that the efficiency of utilizing space on the body frame can be improved.

In the present invention, it is preferable that the concave portion is formed on a rear side of the grain tank.

By providing this aspect, the recessed portion of the grain tank is formed on the rear side of the grain tank, so that the fuel tank can partially protrude to the rear side of the grain tank. This has the advantage that the capacity of the fuel tank can be further increased.

In the present invention, it is preferable that the fuel tank includes a protruding portion protruding rearward from the grain tank in a plan view, and the protruding portion includes a fuel supply port.

With this configuration, the fuel supply port is provided in the projecting portion projecting rearward from the grain tank, and therefore, the fuel supply operation from the outside can be easily performed.

(2) The following is a solution to the problem (2).

The work vehicle of the present invention includes: a radiator that cools cooling water of an engine; a cooling fan which is disposed inside the body with respect to the radiator and cools the radiator; a dust-proof box which has a dust-proof net covering the outer side of the body of the radiator in a state of allowing ventilation and preventing dust from passing through, and can swing in an open manner; an air-cooled cooling device located between the dust screen and the radiator; the air-cooled cooling device is configured to be capable of opening and moving in a direction different from the opening and moving direction of the dust box.

According to the present invention, since the direction of the open movement of the air-cooled cooling device is different from the direction of the open movement of the dust box, the air-cooled cooling device is not supported by the support structure for the open/close movement of the dust box. Thus, even if the support structure for opening and closing movement of the dust box is damaged, the air-cooled cooling equipment can be appropriately opened and moved regardless of the support structure for opening and closing movement of the dust box.

In the above aspect, it is preferable that one of the dust box and the air-cooled cooling device is configured to be movable up and down; the other of the dust box and the air-cooled cooling device is configured to be horizontally movable.

According to this aspect, since the open movement direction of the air-cooled cooling equipment and the open movement direction of the dust box are in a substantially orthogonal relationship, the operating feeling of the open movement operation of the air-cooled cooling equipment and the operating feeling of the open movement operation of the dust box are different from each other, and the maintainability of the air-cooled cooling equipment can be improved.

Here, "vertical movement" is a concept including a swinging movement in the vertical direction and a sliding movement in the vertical direction.

The term "horizontal movement" is a concept including a swing movement in the lateral direction and a slide movement in the lateral direction.

In the above aspect, it is preferable that the dust box and the air-cooled cooling device are rotatable.

According to this aspect, since it is not necessary to secure an interference-free space in the sliding range as in the case of a configuration in which the dust box and the air-cooled cooling device are slidably movable, it is easy to lay out the dust box and the air-cooled cooling device.

In the above aspect, it is preferable that the air-cooled cooling device and a device to be cooled are connected by a flexible hose; the air-cooled cooling device is rotatable by deformation of the flexible hose.

According to this aspect, the flexible hose connected to the device to be cooled can be used as a rotating structure of the air-cooled cooling apparatus. Therefore, it is not necessary to provide a dedicated turning structure in the air-cooled cooling equipment, and the structure can be simplified.

In the above aspect, it is preferable that a through-support portion is provided on a frame body that houses the heat sink; the flexible hose is supported by the through-support portion; the air-cooled cooling device is rotatable with the vicinity of the through-support as a base point.

According to this aspect, the amount of deformation of the flexible hose is reduced as compared with a structure in which the flexible hose is rotated with a portion farther from the penetrating support portion of the frame body as a base point, and a decrease in durability of the flexible hose can be suppressed.

In the above aspect, it is preferable that the through-support portion is detachable from the frame body.

According to this aspect, the flexible hose is easily deformed by detaching the through-support portion from the frame body, and the turning operation of the air-cooled cooling equipment to which the flexible hose is connected is easily performed.

Further, the flexible hose is stably supported by the through-support portion by attaching the through-support portion to the frame body.

In the above aspect, it is preferable that the frame body includes a restricting member that restricts movement of the flexible tube when the air-cooled cooling device is moved in the open state.

According to this aspect, the restricting member restricts the flexible hose so as not to be excessively deformed, and therefore, a decrease in durability of the flexible hose can be suppressed.

In the above aspect, it is preferable that another air-cooled cooling device different from the air-cooled cooling device is provided inside the body of the air-cooled cooling device; the other air-cooled cooling device is configured to be capable of opening movement in a direction different from the opening movement direction of the air-cooled cooling device and the opening movement direction of the dust box.

According to this aspect, since the supporting structure of the dust box, the supporting structure of the air-cooled cooling equipment, and the supporting structure of the other air-cooled cooling equipment are different from each other, even if the supporting structure of one equipment is damaged or the like, the other supporting structure is not affected. Further, since the open movement directions of the dust box, the air-cooled cooling equipment, and the other air-cooled cooling equipment are different from each other, the operation feelings of the open movement operation of the dust box, the open movement operation of the air-cooled cooling equipment, and the open movement operation of the other air-cooled cooling equipment are different from each other, and the maintainability of the air-cooled cooling equipment and the other air-cooled cooling equipment can be improved.

In the above aspect, preferably, the dust box is rotatable about a longitudinally oriented axis; one of the air-cooled cooling device and the other air-cooled cooling device is rotatable upward; the other of the air-cooled cooling device and the other air-cooled cooling device is rotatable downward.

According to this aspect, the dust box can be rotated about the longitudinal axis, so that the dust box can be easily opened and moved without being lifted up. Further, since the air-cooled cooling equipment and the other air-cooled cooling equipment can be rotated to different sides in the vertical direction, the operation feeling of the opening movement operation of the air-cooled cooling equipment and the operation feeling of the opening movement operation of the other air-cooled cooling equipment are different from each other, and the maintainability of the air-cooled cooling equipment and the other air-cooled cooling equipment can be improved.

In the above aspect, it is preferable that the air-cooled cooling device in an open swing state and the other air-cooled cooling device in an open swing state are locked to each other, and thereby both the air-cooled cooling device and the other air-cooled cooling device are kept in an open swing state.

According to this aspect, it is not necessary to provide a dedicated locking member for locking the air-cooled cooling device and other air-cooled cooling devices in the open swing state, and the structure can be simplified.

(3) The following is a solution to the problem (3).

The canopy for a working machine according to the present invention is characterized by comprising a support frame supported by a machine body of the working machine, and a flexible sheet stretched over the support frame to form a canopy portion and having flexibility; the support frame is formed into a frame shape in a plan view; a mounting portion provided on an inner surface side of the flexible sheet and facing the support frame; the mounting portion is provided in a state of being positioned inside the frame of the support frame having a frame shape in a plan view.

According to this aspect, since the top cover portion is formed of a flexible sheet having flexibility and being stretched over the support frame, for example, when the top cover portion is damaged by contact with another object or the like, the top cover portion is divided into a plurality of pieces without being broken, and is only damaged by a part of the pieces being broken to form cracks or the like. Therefore, the damaged portion can be continuously used as it is by performing a repair process such as attaching or sewing. As a result, even when the top cover portion is damaged, it is not necessary to replace the entire top cover portion with a new one, which is advantageous in terms of cost.

Since the flexible sheet is attached to the support frame by the attachment portion located inside the frame of the support frame, the attachment operation can be easily performed in a state where the flexible sheet is laid over the support frame, for example, in the case of performing a replacement operation such as repair. Further, since the position corresponding to the mounting portion is pulled toward the support frame side, i.e., the frame outer side after the flexible sheet is placed under tension on the support frame, the flexible sheet can be placed under tension with less slack.

Therefore, the canopy for a working machine according to the present invention is advantageous in terms of cost, and can be easily replaced.

In the present invention, it is preferable that the mounting portion is provided in a plurality along the frame shape of the support frame.

According to this aspect, since the flexible sheet is attached to the support frame via the attachment portions provided in plural numbers in a state of being arranged along the frame shape of the support frame, the flexible sheet can be stretched in a state of being less loosened over the entire frame shape.

In the present invention, it is preferable that a long sheet-like mounting member having the plurality of mounting portions and extending along the frame shape of the support frame is mounted on the inner surface side of the flexible sheet.

According to this aspect, the sheet-like mounting member is attached to the inner surface side of the flexible sheet, and the mounting member includes the mounting portion. As a result, the flexible sheet can be configured to easily prevent the intrusion of rainwater without requiring special processing such as forming a mounting portion such as an insertion hole for mounting.

In the present invention, it is preferable that the mounting portion is provided with an insertion hole; the insertion hole and the support frame are connected by a string-shaped member.

According to this aspect, the string-like member is inserted through the insertion hole so as to surround the support frame, and the ends of the string-like member are connected to each other. By assembling the string-like member in this manner, the flexible sheet can be reliably attached to the support frame.

In the present invention, it is preferable that the support frame includes: a peripheral frame forming body formed in a rectangular frame shape; a lateral connecting body spanning lateral side portions on both left and right sides of the peripheral frame forming body; a lateral reinforcement body integrally connected to the lateral connection body along the lateral connection body; and an oblique reinforcement body extending in an oblique direction across a lateral direction middle portion of the lateral reinforcement body and the lateral side portions on both left and right sides of the peripheral frame forming body.

According to this aspect, the outer peripheral portion of the lid top portion in a plan view is formed by the peripheral frame forming body. The lateral connecting body that is bridged over the peripheral frame forming body can be used as a member for supporting the body of the working machine. The peripheral frame forming bodies and the lateral connecting bodies constitute a main part of the support frame. Further, by providing the lateral reinforcement body and the oblique reinforcement body, the peripheral frame forming body and the lateral connecting body constituting the main portion can be reinforced, and a support frame having a large strength can be formed.

In the present invention, it is preferable that the support frame is supported to be vertically swingable about a horizontal axis with respect to a support column supported by a machine body of the working machine; a positioning mechanism of an engaging type capable of holding a vertical swing position of the support frame at a set position; and a biasing mechanism for biasing the support frame to move upward or downward around the lateral axis is provided across the support frame and the support column.

According to this aspect, the positioning mechanism holds the vertical swing position of the support frame at the set position by engaging the member on the support frame side with the member on the support column side. When the support frame is held at the set position, the support frame is moved upward or downward by the biasing mechanism.

In the portion where the member on the support frame side engages with the member on the column side, the urging force of the urging mechanism maintains the state where both members are pressed against each other, and the support frame can be supported in a good state without rattling.

A working machine according to the present invention is characterized by including the working machine canopy described above.

According to this aspect, the upper side of the driving section of the working machine can be used as a canopy for a working machine, and the driver riding in the driving section can be prevented from being exposed to the sun or rain.

In the present invention, it is preferable that the canopy for a working machine is provided so as to be positioned above the cab; a driving part is arranged below the driving part; the prime mover includes an engine, a radiator for cooling the engine, a cooling fan for generating cooling air for the radiator, and a dust cover for sucking the cooling air from the outside of the engine; the position of the end of the dust cover on the outside of the machine body is coincident or substantially coincident with the position of the end of the canopy for work machines on the outside of the machine body.

According to this aspect, the engine, the radiator, and the cooling fan provided in the prime mover are covered on the upper side by an engine cover or the like provided in the driver's cab, and the dust cover is provided in a portion facing the outside of the body to suck in the outside air, and is exposed to the outside in a state not covered by the engine cover or the like.

Since the position of the outer side end of the dust cover is aligned or substantially aligned with the position of the outer side end of the working machine canopy, the upper portion of the dust cover exposed to the outside can be used as a working machine canopy cover. Rainwater and the like can be prevented from falling on the dust cover, and the durability of the dust cover can be improved.

In the present invention, it is preferable that the canopy for a working machine is provided so as to be positioned above the cab; the driver part is provided with a driver seat and a side panel positioned at the inner side of the body of the driver seat; the position of the side panel at the inner side end of the machine body is identical or approximately identical to the position of the inner side end of the machine body of the canopy for the working machine.

According to this aspect, the side panel is provided with various operation tools for performing driving operations, but the various operation tools are provided in a state of being exposed outward from the side panel for operation by the driver.

Since the position of the end portion on the inside of the machine body of the side panel coincides or substantially coincides with the position of the end portion on the inside of the machine body of the canopy for work machine, various operation tools can be exposed above the side panel on the outside and used as a canopy cover for work machine. It is possible to suppress rain water and the like from falling on various operation tools and to improve durability of the various operation tools.

Drawings

Fig. 1 is a view showing embodiment 1 (hereinafter, the same applies to fig. 13), and is a right side view of the entire general-type combine harvester.

Fig. 2 is a plan view of the whole of a general type combine harvester.

Fig. 3 is a right side view showing a positional relationship between the grain tank and the fuel tank provided in the body frame and the fueling auxiliary table.

Fig. 4 is a rear view showing a positional relationship among the grain tank, the threshing device, and the fuel tank provided in the body frame and the fueling auxiliary table.

Fig. 5 is a view in the direction of the line V-V section of fig. 4.

Fig. 6 is a partially enlarged rear view showing a supporting structure of the grain tank and the unloader and the oil supply auxiliary table.

Fig. 7 is an exploded perspective view showing a supporting structure of the grain tank and the unloader and the oil supply auxiliary table.

Fig. 8 is a sectional view showing an attachment structure of the fueling auxiliary table.

Fig. 9 is a sectional view showing an attachment structure of the fueling auxiliary table.

Fig. 10 is an explanatory view showing an open posture fixing structure of the grain tank.

Fig. 11 is a cross-sectional view taken along line XI-XI in fig. 4.

Fig. 12 is a rear view showing an upper portion of the unloader.

Fig. 13 is a cross-sectional view along line XIII-XIII in fig. 12.

Fig. 14 is a view showing embodiment 2 (hereinafter, the same as fig. 20), and is an overall side view showing a general combine harvester as an example of a working vehicle.

Fig. 15 is a plan view showing the whole of a conventional combine harvester.

Fig. 16 is a side view showing the inside of the dust box.

Fig. 17 is a rear sectional view showing the interior of the dust box and the hood.

Fig. 18 is a partially cut-away plan view showing the interior of the dust box and the hood.

Fig. 19 is an exploded perspective view showing the periphery of the through-support portion.

Fig. 20 is a rear cross-sectional view showing a state in which an intercooler, which is an example of an air-cooled cooling device, and an oil cooler for a working machine and an oil cooler for a transmission, which are examples of other air-cooled cooling devices, are swung open.

Fig. 21 is a view showing embodiment 3 (hereinafter, the same applies to fig. 33), and is an overall side view of the combine harvester.

Fig. 22 is an overall plan view of the combine harvester.

Fig. 23 is a side view of the crawler travel device.

Fig. 24 is a longitudinal sectional rear view of the crawler travel device.

Fig. 25 is a front view showing the periphery of the cab.

Fig. 26 is an exploded perspective view of the canopy.

Fig. 27 is a bottom view of the canopy.

Fig. 28 is a longitudinal sectional side view of the canopy.

Fig. 29 is a side view of the positioning mechanism.

Fig. 30 is a top view of the positioning mechanism.

Fig. 31 is a front view of the positioning mechanism.

Fig. 32 is a front elevation view in longitudinal section of a portion of the canopy.

Fig. 33 is a perspective view of the string-like member.

Detailed Description

[ 1 st embodiment ]

Hereinafter, embodiment 1 of the present invention will be described with reference to the drawings.

The front-rear direction and the left-right direction in the description of embodiment 1 are as follows unless otherwise specified. That is, the forward direction (see arrow F in fig. 2) of the machine body during the work travel is "forward", the backward direction (see arrow B in fig. 2) is "backward", the direction on the right side (see arrow R in fig. 2) relative to the forward posture in the forward-backward direction is "right", and the direction on the left side (see arrow L in fig. 2) is "left".

[ integral Structure ]

Fig. 1 and 2 show a conventional combine harvester as an example of a harvester. The harvester is an example of a working machine.

This conventional combine harvester includes a self-propelled body a (corresponding to a traveling body) that travels with a pair of right and left crawler traveling devices 1. The bicycle body a includes a driver part 2 and a pre-harvest processing apparatus 3 (corresponding to a harvesting part) at a front position thereof. Further, the rear position of the bicycle body a is provided with a whole straw-input type threshing device 4 into which the straw cut by the pre-cutting treatment device 3 is fed, a grain tank 5 (corresponding to a grain storage unit) which stores grains supplied from the threshing device 4, and an unloader 6 which discharges the grains stored in the grain tank 5 to the outside of the machine. Further, a fuel tank 40 is provided at the rear end of the bicycle body a on the body frame 10 corresponding to a portion between the grain tank 5 and the threshing device 4.

[ Driving part ]

An engine 20 mounted on the body frame 10 is disposed below the driver seat 11 of the driver part 2, and a transmission (not shown) for transmitting the driving force from the engine 20 to the right and left crawler belt traveling devices 1 is provided at the center of the front part of the bicycle body a across the upper and lower sides of the body frame 10. The transmission is provided with a continuously variable transmission (not shown) for continuously varying the driving force from the engine 20, and is provided with a steering clutch (not shown) for turning on/off the driving force transmitted to the right and left crawler belt units 1.

The cab 2 includes a box-shaped engine hood 21 that covers the upper side of the engine 20, and an operator's seat 11 is provided on the upper surface of the engine hood 21. A suction box 22 is formed at an outer side portion of the engine cover 21, an air intake portion 22A is formed on an outer surface side of the suction box 22 to intake cooling air, and a dust screen is stretched in the air intake portion 22A.

A steering tower 12 is erected on the front side of the driver seat 11, and an operation lever 13 is provided on the upper surface side of the steering tower 12 to be swingable back and forth and right and left, and the operation lever 13 serves as both an operation tool for performing steering control of the bicycle body a and an operation tool for performing elevation control of the pre-harvest processing apparatus 3.

As shown in fig. 1 and 2, a side panel 14 extending rearward from a left lateral end of the steering tower 12 is provided on a left side of the driver seat 11. On the upper surface of the front end of the side plate 14, a main shift lever 15A and a sub shift lever 15B are provided as a shift operating tool 15 for controlling the traveling speed of the bicycle body a.

Further, on the upper surface side of the side plate 14, a threshing clutch lever 16A and a cutting clutch lever 16B are provided as working clutch levers 16 at positions rearward of the shift operating tool 15 in a left-right arrangement. The threshing clutch lever 16A and the cutting clutch lever 16B are configured such that a threshing clutch (not shown) of the threshing device 4 is turned on/off by a forward/backward swinging operation of the threshing clutch lever 16A, and a cutting clutch (not shown) of the pre-cutting treatment device 3 is turned on/off by a forward/backward swinging operation of the cutting clutch lever 16B.

Further, a discharge clutch lever (not shown) is provided on the side plate 14 on the rear side of the threshing clutch lever 16A and the mowing clutch lever 16B. The discharge clutch lever is an operation tool for performing an on/off operation of the discharge clutch 17 (see fig. 1) for turning on/off the driving force from the engine 20 with respect to the bottom screw 51 of the grain tank 5, and for switching between a state in which grain discharge by the unloader 6 is possible and a state in which grain discharge is stopped.

[ cutting processing device ]

The pre-harvest processing apparatus 3 is configured to scrape up the ear tip side where the straw is planted by the rotating operation of the scraping and gathering reel 30, and to cut the roots of the straw by the cutter 31. The harvested straw (harvested straw) is fed laterally by means of a lateral feed auger 32, converging towards the vicinity of the inlet of a feeder 33. The whole stalks are fed backward by the feeder 33 and fed into the threshing device 4.

The pre-harvest processing apparatus 3 is configured to be vertically swingable about a horizontal axis (not shown) on the rear end side of the feeder 33. The feeder 33 is swung up and down by an actuator (not shown) such as a hydraulic cylinder provided across the body frame 10 and a lower portion of the feeder 33. The adjustment of the straw cutting height can be performed by setting the swing amount by the operation of the actuator.

The raking reel 30 disposed at a position above the front end of the feeder 33 is configured to be vertically swingable on the front side about a swing fulcrum (not shown) at the rear end, and to be capable of changing a raking height position with respect to the feeder 33. By changing the relative height of the raking reel 30 with respect to the feeder 33 in this way, the raking height with respect to the crop to be harvested, such as the planted straw, can be changed without changing the harvesting height. The change of the height position of the gathering reel 30 is performed by the expansion and contraction operation of a reel elevating device (not shown) composed of a hydraulic cylinder interposed between the gathering reel 30 and the upper part of the feeder 33. The lifting operation of the reel lifting device is performed by a command from an operation input unit such as a button switch, not shown, provided at the grip portion of the operation lever 13.

[ threshing device ]

The threshing device 4 includes: an axial flow type treatment body (not shown) which is driven to rotate around the axis of the posture along the front-back direction of the bicycle body A so as to perform treatment processing of cutting straws supplied to the treatment chamber; and a screening device (not shown) for screening grains from the processed object obtained by the treatment.

In this screening apparatus, the first material of the screened grains is supplied to the grain tank 5 by the winnowing device 4A, the second material is returned to the treatment chamber (not shown) in which the treatment body is wound by the second reduction device (not shown), and straw chips and the like other than the grains are dropped and discharged from the rear of the screening apparatus to the rear of the body a of the bicycle.

[ cereal case ]

The grain tank 5 has a tank main body 50 for storing grains supplied from the winnower 4A.

The box body 50 includes a front wall 50a facing the front side of the body, a rear wall 50b facing the rear side of the body, a left lateral wall 50c facing the left side of the body inner side, and a right lateral wall 50d facing the right side of the body outer side at a storage position in the bicycle body a, and is formed in a substantially rectangular box shape. The box body 50 is supported so as to be switchable between a working posture (a posture indicated by a solid line in fig. 2; corresponding to a storage position) accommodated in the bicycle body a and a maintenance posture (a posture indicated by a broken line in fig. 2; corresponding to a maintenance position) extending laterally from the bicycle body a by being wound around the vertical axis Y of the longitudinal posture at the rear position of the bicycle body a.

The vertical axis Y as the center of rotation of the grain tank 5 is configured to coincide with the cylinder axis of the vertical transfer cylinder 61 provided in the unloader 6 provided on the rear surface side of the tank main body 50.

As shown in fig. 1 to 4, the grain tank 5 includes a bottom screw 51 for feeding grains stored in the tank main body 50 rearward at the bottom of the tank main body 50.

Most of the bottom wall 50A of the box main body 50 is formed as a tapered inclined surface that is lower toward the center in the left-right direction, so that the grains supplied from the grain raising device 4A are concentrated toward the bottom center in the left-right direction of the box main body 50 in the working posture in which the box main body 50 is accommodated in the bicycle body a. With this structure, the bottom screw 51 is disposed at a substantially central position in the left-right direction of the box main body 50.

The inclined surface of the bottom wall 50A is set to an inclination angle to the extent that grains can slide down toward the bottom screw 51 under their own weight. The portion having the bottom wall 50A formed as such an inclined surface corresponds to an inclined portion that narrows at the lower portion of the grain tank 5. A recessed portion 52 described later is formed in the inclined portion.

The tip of the screw shaft 51A of the bottom screw 51 protrudes forward from the front wall 50a of the box body 50. The screw shaft 51A is configured to transmit a driving force from the engine 20 to a tip thereof, and to be capable of turning on/off the driving force from the engine 20 via a discharge clutch 17 (see fig. 1) provided on the transmission upstream side.

A rear support plate 54 for supporting the rear end side of the bottom screw 51 is integrally attached to the rear wall 50b of the box main body 50 at the rear wall 50 b. The rear support plate 54 is used for reinforcement when attaching the heavy bottom screw 51 across the front wall 50a and the rear wall 50b, and although not shown, a front support plate of the same structure is also fixed to the front surface side of the front wall 50 a. The front support plate and the rear support plate 54 are made of iron plates having a relatively large thickness, and are each composed of a reinforcing member having a shape in which the left and right end edges are folded back to the outside and stand in a ribbed plate shape.

A discharge tube 53 for discharging grains fed from the bottom screw 51 to the unloader 6 is welded and fixed to the rear surface side of the rear support plate 54 in a state of projecting rearward.

As shown in fig. 3, the discharge cylinder 53 is formed so as to be bent upward at its rear end, and the lower end of the vertical transfer cylinder 61 of the unloader 6 is connected to the upward end surface thereof. The bevel gear 51Aa provided at the rear end of the screw shaft 51A of the bottom screw 51 is engaged with a bevel gear 61Aa provided at the lower end of the vertical screw shaft 61A in the vertical transport cylinder 61 to transmit power. This causes the grains to be carried out from the bottom screw 51 toward the vertical feed cylinder 61 of the unloader 6.

As shown in fig. 4 to 6, a recessed portion 52 is formed in a portion of the inclined portion provided in the lower portion of the grain box 5, which portion corresponds to a lower portion of the left lateral wall 50c facing the left side, which is the body inner side, in the storage posture of the bicycle body a.

The recessed portion 52 has a longitudinal length of about 1/3 on the rear half side of the longitudinal length of the box main body 50 in the longitudinal direction, and is formed in the following state in the vertical direction: the bottom wall 50A is recessed inward in the tank over a range from a vertically intermediate position of the inclined bottom wall 50A to a position slightly above an upper end edge of the bottom wall 50A.

That is, the recessed portion 52 is a recessed portion such that: the front side, the upper side and the right lateral side are surrounded by three wall surfaces, a recessed front wall 52a at the front end portion thereof, and a recessed inclined wall 52b and a recessed lateral wall 52c at the rear side thereof, and the rear side, the left lateral side and the lower side are open.

As shown in fig. 4 to 6, the recessed portion 52 configured as described above has an upper end portion of the recessed portion 52 at a position higher than the upward surface 44A of the fuel tank 40. Therefore, an upper corner portion on the right side of the fuel tank 40 in the rear view can be disposed in the inner space of the recessed portion 52 in an advanced state. This allows the fuel tank 40 having a relatively large capacity to be disposed in the space between the grain tank 5 and the threshing device 4 in the right-left direction without any obstacle.

As shown in fig. 1 and 2, the ceiling wall 50B of the grain tank 5 is formed in a stepped shape with a portion closer to the upper and lower axial center Y of the unloader 6 (the rear side) than a portion farther from the ceiling wall 50B (the front side).

In this way, the portion of the ceiling wall 50B closer to the vertical axis Y, which is the center of the rotation of the unloader 6, is connected to the portion of the ceiling wall 50B farther from the vertical axis Y by the inclined surface 55a, and the recessed step portion 55 is formed behind the inclined surface 55 a. Thus, the horizontal transport cylinder 62 of the unloader 6 can be set to a substantially horizontal posture lower than the uppermost position of the ceiling wall 50B portion of the grain tank 5, and to a storage posture supported by the receiving metal fixture 18 at a predetermined position on the bicycle body a.

Further, by providing the recessed step portion 55, even when the horizontal transport cylinder 62 of the unloader 6 is extended outward in the lateral direction of the grain tank 5, the grain tank can be placed in a substantially horizontal posture lower than the uppermost position of the ceiling wall 50B of the grain tank 5, and the grain inside can be discharged to a relatively low position.

Protective reinforcing bodies 56R and 56L made of tubular members are provided at the corners on both right and left end sides of the inclined surface 55a of the recessed stepped portion 55 so as to prevent the corners from being damaged or deformed even when the protective reinforcing bodies come into contact with the horizontal transfer cylinder 62 of the unloader 6.

As shown in fig. 3 and 4, the right reinforcing body 56R of the left and right reinforcing bodies 56R, 56L is formed of a tube thicker than the left reinforcing body 56L. The reinforcement 56R is welded and fixed to a plate-shaped attachment plate 56Ra, and the attachment plate 56Ra is bolted to the vicinity of the right corner of the inclined surface 55a in a state where the attachment plate 56Ra is in contact with the inclined surface 55 a.

As shown in fig. 2 to 4, grain box 5 includes a notch 57 opened on the left lateral side at a position on the left side of the left end of inclined surface 55 a.

The notch 57 is a large arrangement for securing a large overlap of the grain box 5 and the horizontal transport tube 62 in the storage posture supported by the receiving metal fitting 18 at a predetermined position. That is, if the vertical axis Y as the center of rotation of the grain tank 5 is set at the center portion in the left-right direction of the grain tank 5 or at a position outside thereof, the overlapping area between the grain tank 5 in the storage position and the horizontal transport cylinder 62 in the storage posture is inevitably large, but this is acceptable.

As shown in fig. 2 to 4, the left reinforcement 56L of the right and left reinforcements 56R, 56L is disposed along the left end edge of the inclined surface 55a on the front side of the notch 57 slightly closer to the center of the grain box 5 than the left lateral wall 50c of the grain box 5.

The left reinforcement 56L is made of a pipe material thinner than the right reinforcement 56R, and has a rear end side bolted to a lower position of the ceiling wall 50B portion at a position rearward of the portion where the inclined surface 55a exists in the ceiling wall 50B portion of the cereal box 5, and a front end side bolted to a higher position of the ceiling wall 50B portion at a position forward of the portion where the cutout 57 exists in the ceiling wall 50B portion of the cereal box 5.

As shown in fig. 2, the right end of grain box 5 in its stored position is located inward of the right end of suction box 22 of cab 2 corresponding to the right end of bicycle body a.

Therefore, the grain box 5 in the state of being located at the storage position is configured to have a low possibility of coming into contact with another object during traveling.

[ unloader ]

The unloader 6 includes a vertical transport cylinder 61 having a straight tubular shape standing upward and a horizontal transport cylinder 62 connected to an upper end portion of the vertical transport cylinder 61. The horizontal transfer cylinder 62 is configured to be swingable left and right about the vertical axis Y together with the vertical transfer cylinder 61 and to be swingable up and down about a horizontal axis X.

The vertical transport cylinder 61 has the vertical screw shaft 61A built therein, and constitutes an upward vertical transport path for lifting and transporting the grain fed from the rear end of the bottom screw 51. The horizontal transport cylinder 62 connected to the upper end of the vertical transport cylinder 61 has a horizontal screw shaft 62A built therein, and forms a horizontally oriented transport path for transporting grains received from the upper end of the vertical transport cylinder 61 toward the outside of the machine body in the horizontal direction or the like.

The vertical transport cylinder 61 of the unloader 6 is connected to the discharge cylinder 53 of the grain tank 5 so as to be rotatable about a vertical axis Y along the cylinder axis of the vertical transport cylinder 61. The winding operation of the vertical feed cylinder 61 around the vertical axis Y is performed by the winding drive mechanism 60.

As shown in fig. 3 to 6, the orbiting drive mechanism 60 includes an orbiting gear portion 61a provided on the outer periphery of the lower end portion of the vertical transport cylinder 61, a pinion gear 63a meshing with the orbiting gear portion 61a, an electric motor 63 driving the pinion gear 63a, and the like.

The electric motor 63 is supported by a support frame 23 erected from the body frame 10 as a body fixing portion, and is assembled so that a pinion gear 63a provided on an output shaft of the electric motor 63 meshes with the winding gear portion 61 a. With this configuration, the horizontal transport cylinder 62 of the unloader 6 can be rotated clockwise or counterclockwise about the vertical axis Y in accordance with the normal rotation or reverse rotation of the electric motor 63.

The horizontal transfer cylinder 62 is configured to oscillate up and down about the horizontal axis X by the expansion and contraction operation of a hydraulic cylinder 64 provided across the upper portion of the vertical transfer cylinder 61.

In the unloader 6, maintenance windows 65, 66 for maintenance work are provided in both a portion on the conveyance starting end side of the lateral conveyance cylinder 62 and a conveyance end portion of the vertical conveyance cylinder 61.

As shown in fig. 4 and 12, the inspection window 66 of the horizontal transport cylinder 62 is formed on the lateral outer surface of the base end portion box 62B of the horizontal transport cylinder 62 opposite to the side connected to the tip end portion box 61B of the vertical transport cylinder 61. The access window 66 is configured to be closed and opened by bolting a flat plate-shaped cover plate 66B to an opening 66A formed in a flat portion of the base end portion case 62B.

As shown in fig. 3, 12 and 13, the inspection window 65 of the vertical transport cylinder 61 is formed on the lateral outer surface of the distal end portion case 61B of the vertical transport cylinder 61 opposite to the side connected to the proximal end portion case 62B of the lateral transport cylinder 62. The access window 65 is configured to be capable of closing and opening by bolt-fixing a partially arc-shaped cover plate 65B to an opening 65A formed in an arc-shaped cylindrical portion of the tip end box 61B.

In the access window 65, an opening 65A is formed in an arc-shaped cylindrical portion, and a cover plate 65B that closes the opening 65A is formed in a curved plate shape having an arc-shaped inner peripheral surface 65Ba that follows the curvature of an arc surface 61Ba on the inner peripheral side of the tip end portion case 61B.

The cover plate 65B is formed by a combination of an outer connecting plate 65Bb and an inner guide plate 65Bc such that, when the cover plate 65B is closed, the arcuate inner peripheral surface 65Ba is fixed in a flush state with the arcuate surface 61Ba on the inner peripheral side of the tip end portion case 61B, and the inner guide plate 65Bc is fitted into the opening 65A and has a thickness approximately equal to the thickness of the tip end portion case 61B.

The cover plate 65B configured as described above can close the access window 65 of the vertical transport cylinder 61 by connecting the outer connecting plate 65Bb to the tip end box 61B with the connecting bolt 65C in a state where the inner guide plate 65Bc is fitted into the opening 65A.

In this state, as shown in fig. 13, the arcuate inner peripheral surface 65Ba of the cover plate 65B having the same degree of curvature as that of the arcuate surface 61Ba on the inner peripheral side of the tip end portion case 61B is mounted in a state of being substantially flush with the inner peripheral surface.

As shown in fig. 3, 4, and 11, the vicinity of the upper end of the vertical transport cylinder 61 is fixedly coupled to the rear wall 50b of the grain tank 5 via a fitting 67.

As shown in fig. 11, the attachment fitting 67 is configured by a combination of a tank-side connecting member 67A having a receiving surface 67Aa along the curvature of the outer circumferential arc of the vertical transport cylinder 61 and a U-shaped connecting member 67B bent in a U-shape so as to be connected to the tank-side connecting member 67A and having an abutment surface 67Ba along the curvature of the outer circumferential arc of the vertical transport cylinder 61.

The tank-side coupling member 67A and the U-shaped coupling member 67B can be coupled and uncoupled via a coupling bolt 67C.

[ Fuel tank ]

As shown in fig. 2 to 6, the fuel tank 40 is disposed at a position corresponding to a space between the grain tank 5 and the threshing device 4 on the body frame 10 at the rear end of the bicycle body a.

The main body portion 41 of the fuel tank 40 includes an upward surface 44A in a horizontal or substantially horizontal posture as an upper wall of the main body portion 41 and a lateral surface 44B in a vertical direction as a lateral wall of the main body portion 41, and a bottom surface 44C as a bottom wall of the main body portion 41 is mounted on the body frame 10. The front surface 44D as a front wall of the main body portion 41 and the rear surface 44E as a rear wall are both formed in a substantially rectangular shape, and the entire main body portion 41 is formed in a rectangular box shape. By forming the entire main body portion 41 in a rectangular box shape having a bilaterally symmetric shape instead of a bilaterally asymmetric shape, the front surface 44D and the rear surface 44E are formed in the same shape, and thereby the components can be shared.

The height of the upward surface 44A is set to be lower than the upper end of the recessed portion 52 of the grain tank 5, and the upper portion of the fuel tank 40 is partially inserted into the recessed portion 52 of the grain tank 5.

The main body portion 41 of the fuel tank 40 is positioned in the front-rear direction in a state where the front face 44D is in close proximity to the recessed front wall 52a of the recessed portion 52 provided at the lower portion of the grain tank 5. The rear surface 44E extends rearward from the rear wall 50b of the grain tank 5, passes over the rear end of the machine frame 10, and is disposed in a range up to substantially the same position as the rear end of the unloader 6. An oil supply port 42 that opens obliquely rearward and upward is provided in an upper portion of a portion of the main body portion 41 that protrudes rearward from the rear wall 50b of the grain tank 5. The main body portion 41 is fixed to the body frame 10 by a mounting band 43.

As shown in fig. 1 to 5, the rear end side of the main body portion 41 protruding rearward from the rear wall 50b of the grain tank 5 is configured to be restrained from coming into contact with another object from below or from behind by the protective member 80 connected to the rear end portion of the machine body frame 10.

The protective member 80 includes a pair of right and left rear extension frames 81, 81 extending from the rear end of the body frame 10 toward the body rear side, and a lateral frame 82 connecting the rear ends of the rear extension frames 81, 81 to each other, and is formed in a door shape in plan view.

The left and right rear extension frames 81, 81 are formed of gutter-like members facing each other with their opening sides facing each other, and the horizontal frame 82 is formed of a pipe member made of steel pipe, and the pipe member is connected by a connecting bolt 83 penetrating in the vertical direction in a state of being fitted into the opening portion of the gutter-like rear extension frames 81, 81.

The rear end portion of the protective member 80 extends to the rear side of the rear end portion of the fuel tank 40, and is provided over a range from the left end portion position of the fuel tank 40 or from a position on the left side of the left end portion position to a position on the right side of the right end portion of the vertical feed cylinder 61 of the unloader 6 in the left-right direction.

In this way, the fuel tank 40 is disposed in a state of being inserted into the recessed portion 52 provided in the lower portion of the grain tank 5, and the front end side is very close to the recessed front wall 52a of the recessed portion 52, and the rear end side is protruded to a position closer to the rear end portion of the protection member 80 beyond the rear end portion of the body frame 10, thereby securing the capacity of the fuel tank 40 as large as possible.

As shown in fig. 4 to 6, in a substantially triangular space formed between a transverse surface 44B of the fuel tank 40 on the side opposite to the grain tank 5 and an inclined bottom wall 50A of the grain tank 5 opposite to the fuel tank 40, a separator 45 and a fuel filter 46 are disposed in a front-rear arrangement in a fuel supply path from the fuel tank 40 to the engine 20 in a state of being inserted into the space in a rear view. While the fuel in the fuel tank 40 is fed in the order of the separator 45 and the fuel filter 46, impurities in the fuel are removed and supplied to the engine 20.

[ support Structure ]

A supporting structure for supporting the grain tank 5 and the unloader 6 will be described.

As shown in fig. 3 to 7, the support structure includes a support frame 23 erected on the machine body frame 10.

The support frame 23 includes a vertical column portion 24 formed in a rectangular column shape by an angular tube, an attachment seat plate 25 provided on the lower end side to the body frame 10, an unloader coupling portion 26 and a threshing coupling portion 27 provided on the upper end portion of the vertical column portion 24, a drive mechanism attachment portion 28 provided at a middle position in the vertical direction of the vertical column portion 24, and an attachment bracket 29 of the fueling auxiliary table 7 described later. The support frame 23 configured as described above is fixed to the machine body frame 10 in the upright posture of the vertical columnar portion 24 by bolting the mounting seat plate 25 at the lower end to the machine body frame 10.

As shown in fig. 4 and 8, at the upper end of the vertical column portion 24, a lateral frame 27A for connection to the threshing device 4 is bolted to the left side near the upper end of the vertical column portion 24, and the upper end of the vertical column portion 24 is integrally fixed to the threshing device 4 via the lateral frame 27A.

Further, the unloader 6 is supported via an unloader coupling portion 26 on the right side near the upper end of the vertical columnar portion 24. As shown in fig. 3, 4, and 7, the unloader coupling portion 26 includes a 1 st mounting piece 26A and an arc-shaped 2 nd mounting piece 26B, the 1 st mounting piece 26A is fixed by welding in a state of protruding from the right side of the vertical columnar portion 24 toward the rear side, and the 2 nd mounting piece 26B is mounted so as to face the 1 st mounting piece 26A on the right side and to surround the vertical conveying cylinder 61 with the 1 st mounting piece 26A. The vertical transport cylinder 61 is supported between the 2 nd mounting piece 26B and the 1 st mounting piece 26A of the unloader coupling portion 26 so as to be rotatable relative thereto in a sandwiched state.

A driving mechanism mounting portion 28 for mounting a winding driving mechanism 60 is provided at a halfway position of the vertical column portion 24.

That is, as shown in fig. 6 and 8, a mounting bracket 28A horizontally projects in a lateral direction at a halfway position of the vertical columnar portion 24, and a mounting table 28B of the swing drive mechanism 60 is bolted to the mounting bracket 28A.

Therefore, by assembling the swing drive mechanism 60 to the mounting table 28B so that the pinion gear 63a of the electric motor 63 meshes with the swing gear portion 61a of the vertical transport cylinder 61, the unloader 6 can be mounted in a state of being able to be driven to swing around the vertical axis Y by the driving of the electric motor 63.

A mounting bracket 29 of the fueling auxiliary table 7 described later is provided below the driving mechanism mounting portion 28 of the vertical columnar portion 24.

The mounting bracket 29 is arranged and fixed by welding a member formed into a groove shape in a plan view in a state where an open side thereof faces the vertical columnar portion 24.

The mounting bracket 29 has bolt holes 29a and 29a with fixing nuts formed at both upper and lower ends thereof, and is configured to be able to fasten and unfasten the mounting support member 70 of the fuel assist table 7 by a pair of upper and lower fastening bolts 29 b.

[ oil supply auxiliary table ]

As shown in fig. 3 to 7, the auxiliary fueling table 7 is attached to a position lower than the revolving drive mechanism 60 at a halfway position of the vertical column portion 24.

The refueling auxiliary stand 7 is configured as follows so that a heavy refueling container can be temporarily placed to allow easy refueling when refueling the fuel tank 40.

That is, the refueling auxiliary stand 7 includes a mounting support member 70 and a receiving stand member 73, the mounting support member 70 is bolted to the mounting bracket 29 provided on the vertical column portion 24, and the receiving stand member 73 is attached to the mounting support member 70.

The mounting support member 70 includes a base end side coupling portion 70A coupled to the mounting bracket 29 of the vertical columnar portion 24, an intermediate cylindrical portion 70B having one end side coupled to the base end side coupling portion 70A and projecting rearward, and a shaft support portion 70C that supports the pedestal member 73 in a cantilever shape on the other end side of the intermediate cylindrical portion 70B.

The receiving base member 73 includes a rod member 74 formed of a pipe material bent in a U shape, and a flat plate-shaped platen 75 provided at a portion of the rod member 74 bent in a U shape. The rod member 74 is formed so that one end side of the U shape is longer than the other end side, and the rod portion 74A on the longer end side is supported by the shaft support portion 70C.

The base end side coupling portion 70A of the attachment support member 70 includes a seat plate portion 71, and the seat plate portion 71 is formed in a groove shape similar to the groove-shaped attachment bracket 29 attached to the vertical columnar portion 24, and has a slightly larger width in the left-right direction. The groove-shaped opening portion of the seat plate portion 71 is fitted into the mounting bracket 29 from behind, and the fastening bolts 29b, 29b are inserted into the fastening bolt holes 29a, 29a formed in the mounting bracket 29 and the fastening bolt holes 71a, 71a formed in the seat plate portion 71 and fastened and fixed thereto.

The support structure of the rod-shaped portion 74A of the support base member 73 and the shaft support portion 70C of the attachment support member 70 is configured as shown in fig. 7 to 9.

That is, the shaft support portion 70C includes a support frame portion 72, and the support frame portion 72 includes a pair of left and right projecting pieces 72A, 72B projecting toward the rear side opposite to the base end side connecting portion 70A, and is formed in a groove shape in plan view. A through hole 76 through which the rod portion 74A can be inserted is formed in one of the pair of left and right projecting pieces 72A, 72B of the support frame portion 72, and a boss portion 77 through which the rod portion 74A can be inserted is formed in the other.

The rod-like portion 74A of the receiving base member 73 is inserted through the through hole 76 and the barrel boss portion 77 formed in the support frame portion 72 of the mounting support member 70, and the receiving base member 73 is pivotally supported on the mounting support member 70 so as to be vertically swingable about the horizontal axis p 1.

In a state where the rod portion 74A is inserted through the through hole 76 and the barrel boss portion 77, an engagement body 78 formed of a cotter pin is attached to the rod portion 74A. A coil spring 79 externally fitted to the rod-like portion 74A is attached in a compressed state between the protruding piece 72A on the side of the support frame portion 72 where the through hole 76 is formed and the portion where the locking body 78 of the rod-like portion 74A is provided.

On the projecting end side of the barrel boss portion 77, a 1 st engaging groove 77a into which the locking body 78 can be fitted in a horizontal posture as shown in fig. 8 and a 2 nd engaging groove 77b into which the locking body 78 can be fitted in a vertical posture as shown in fig. 9 are formed. The 1 st engaging groove 77a and the 2 nd engaging groove 77b are formed at positions substantially 90 degrees out of phase with each other in the circumferential direction of the barrel boss portion 77.

Of the 1 st engagement groove 77a and the 2 nd engagement groove 77b, the 2 nd engagement groove 77b is formed as a deeper groove than the 1 st engagement groove 77 a. Thus, as shown in fig. 8, in the storage posture in which the surface of the platen 75 of the receiving table member 73 extends in the vertical direction, the locking body 78 is engaged with the 1 st engaging groove 77a, and the storage posture state of the platen 75 is maintained.

As shown in fig. 9, in a use posture in which the upper surface of the placement surface of the base plate 75 as the receiving base member 73 is along the horizontal direction, the locking body 78 is engaged with the 2 nd engagement groove 77b, and the use posture state of the base plate 75 is maintained.

At this time, in the use posture in which the surface of the platen 75 is along the horizontal direction, the locking body 78 is engaged with the deeper 2 nd engaging groove 77b, so that the use posture state of the pedestal member 73 is easily and reliably maintained.

The receiving base member 73 configured as described above is preferably set such that, in the use posture in which the upper surface of the platen 75 is along the horizontal direction as shown in fig. 3 to 6, the upper surface (corresponding to the placement surface) of the platen 75 is located between the upward surface 44A (corresponding to the upper surface) and the bottom surface 44C (corresponding to the lower surface) of the fuel tank 40, and is preferably located at a position at a height of about 1/2 or slightly higher than the height between the upward surface 44A and the bottom surface 44C of the fuel tank 40.

Further, as shown in fig. 5, it is preferable to dispose the rear end face of the fuel tank 40 in the front-rear direction.

As indicated by broken lines in fig. 3, 4, and 6, the receiving base member 73 assumes the following state in the storage posture: the platen 75 and the rod-like member 74 are located on the rear side facing the lower portion of the rear surface of the fuel tank 40, and also on the rear side facing the separator 45 and the fuel filter 46.

By thus setting the receiving table member 73 to the storage posture, the refueling auxiliary table 7 can be used as a protection mechanism for the fuel tank 40, the separator 45, or the fuel filter 46.

In the receiving table member 73, when in the storage posture, the platen 75 and the rod-like member 74 are positioned so as to face the upper side of the lateral frame 82 of the protective member 80 extending from the rear end portion of the body frame 10 toward the body rear side, as shown in fig. 3. The rod-like member 74 and the lateral frame 82 are also positioned relatively close to each other in the front-rear direction, and the rear portion of the fuel tank 40 is protected by the protective members 80 and the receiving base member 73.

Reference numeral 35 shown in fig. 4 to 6 is a cover body for covering the periphery of the orbiting drive mechanism 60, and is configured to include an upper cover portion 36 and a hanging cover 37 provided to hang downward from the periphery of the upper cover portion 36 so as to cover the rear side periphery of the vertical transport cylinder 61.

Fig. 10 shows a locking device 90 for suppressing the offset movement of the grain tank 5 in a state where the grain tank 5 is present at the service position.

As shown in fig. 6 and 10, the lock device 90 is attached to the rear support plate 54 of the grain tank 5 and configured to be engageable with and disengageable from a fixing bracket 94 attached to the machine frame 10.

The lock device 90 includes a crank-shaped mounting bracket 91 welded and fixed to the front surface of the rear support plate 54, a lock pin 92 provided to be slidable in the vertical direction with respect to a vertical through hole (not shown) formed in the mounting bracket 91, and a coil spring 93 that elastically biases the lock pin 92 downward.

In the state shown in fig. 6 and the state shown by the broken line in fig. 10, the upper portion of the lock pin 92 bent in the L shape is locked to the upper end of the mounting bracket 91, whereby the lock pin 92 is maintained in a state of being pulled upward against the biasing force of the coil spring 93, that is, in an inactive state. In this state, the lock pin 92 does not contact the fixing bracket 94, and allows free swing of the grain tank 5.

In a state where the grain tank 5 is present at the inspection position, as shown by a solid line in fig. 10, the portion of the lock pin 92 bent into the L shape is slightly rotated in the horizontal direction, and the locking with the upper end of the mounting bracket 91 is released, whereby the lock pin 92 is pushed downward by the biasing force of the coil spring 93.

At this time, if the grain tank 5 is present at the inspection position, the lower end portion of the lock pin 92 is positioned to face the locking hole 94a formed in a part of the fixing bracket 94 as shown in fig. 10. Therefore, in a state where grain tank 5 is present at the inspection position, lock pin 92 is inserted into and removed from locking hole 94a in the vertical direction, and the locking and unlocking operations can be performed.

[ other modes for carrying out the embodiment 1 ]

(1) In embodiment 1, the structure in which the grain tank 5 is used as the grain storage unit is exemplified, but the structure is not limited thereto. For example, a known bag filling device may be used instead of the grain tank 5 to collect grains from a hopper for filling bags into the rice bag. Other configurations may be the same as those of embodiment 1.

(2) In embodiment 1, as an example of a device for carrying out grains from the grain tank 5, a structure in which the unloader 6 including the vertical feed cylinder 61 and the horizontal feed cylinder 62 is used and the vertical feed cylinder 61 is configured to be swingable about the vertical axis Y is used, but the present invention is not limited to this. For example, although not shown, the unloader 6 may have an appropriate structure such as a structure configured to undulate about a horizontal axis along the front-rear direction. Other configurations may be the same as those of embodiment 1.

(3) In embodiment 1, the structure in which the fueling auxiliary table 7 is supported by the support frame 23 that supports the upper portion of the unloader 6 is illustrated, but the present invention is not limited to this. For example, the oiling assisting table 7 may be supported by a dedicated support column or a support table separately provided, not limited to the support frame 23 of the unloader 6. Other configurations may be the same as those of embodiment 1.

(4) In embodiment 1, as an appropriate height of the top plate 75 of the fueling auxiliary table 7, a structure at a height of about 1/2 between the upward surface 44A and the bottom surface 44C of the fuel tank 40 is exemplified, but the present invention is not limited thereto.

That is, the height of the top plate 75 of the fueling auxiliary table 7 may be set to be located between the upward surface 44A and the bottom surface 44C of the fuel tank 40, but as the height, a height of about 1/2 which is the average height of adult men is desirable.

Other configurations may be the same as those of embodiment 1.

(5) The shape and the like of the fuel tank 40 are not limited to those of embodiment 1. For example, the present invention may increase the capacity of the fuel tank 40 by increasing the height of the fuel tank 40 or by increasing the lateral width of the fuel tank 40. In this case, an inclined portion may be provided so as to extend over the upward surface 44A of the fuel tank 40 and the lateral surface 44B on the side facing the grain tank 5, so that the shape of the fuel tank 40 follows the shape of the recessed portion 52. This makes it possible to make the fuel tank 40 as large as possible.

(6) In embodiment 1, an example of application to a general-purpose combine harvester is shown, but the present invention is not limited to the general-purpose combine harvester, and can be applied to other harvesters such as a self-threshing type combine harvester, and various working machines other than harvesters such as a transport vehicle and a construction machine.

[ 2 nd embodiment ]

Hereinafter, embodiment 2 as an example of the present invention will be described with reference to the drawings.

As shown in fig. 14 and 15, a traveling machine body of a general-type combine harvester (an example of a "work vehicle") includes a frame-shaped machine body frame 111 extending in a machine body front-rear direction, and a pair of left and right crawler traveling devices 112 supporting the machine body frame 111 from below. The traveling machine body is provided with a harvesting and conveying unit 113 that can be raised and lowered with respect to the machine body frame 111, a threshing device 114, a grain storage unit 115, an unloader 116, a driving unit 117, and a driving unit 118.

The harvesting and conveying unit 113 is provided on the front side of the traveling machine body. The threshing device 114 is provided on the rear side of the harvesting and conveying section 113 of the traveling machine body. The grain storage part 115 is provided on the lateral side of the threshing device 114 of the traveling body. The unloader 116 is erected from the rear side of the grain storage part 115, and protrudes through the upper side of the grain storage part 115 until reaching the upper side of the harvesting conveyor 113. The driving unit 117 is provided behind the harvesting and conveying unit 113 of the traveling machine body and in front of the grain storage unit 115. The prime mover 118 is provided below the cab 117.

The harvesting and conveying unit 113 includes a harvesting reel 119 for harvesting the planted stalks in the field by rotational driving, a cutter 120 for cutting the roots of the planted stalks, a transverse feed auger 121 for conveying the harvested stalks rearward of the machine body, and a feeder 122 for conveying the harvested stalks conveyed by the transverse feed auger 121 obliquely rearward and upward toward the entrance of the threshing device 114.

As shown in fig. 15, the grain storage part 115 can swing around the 1 st vertical axis Y1 near the rear end of the traveling machine body, and can be switched between a normal state of being stored inside the machine body and an open state of being spread outside the machine body. Maintenance of the inside of the body, which is shielded by the grain storage unit 115 in the normal state, can be easily performed simply by opening the grain storage unit 115.

As shown in fig. 14 and 15, the driver section 117 includes a driver seat 123 on which an operator sits, a plurality of operation levers 124 for performing various operation inputs, and the like.

A general type combine harvester is configured to harvest the planted stalks of a field by a harvesting and conveying part 113 while a traveling machine body is caused to travel by a crawler travel device 112, to perform threshing processing on the whole stalks harvested by the harvesting and conveying part by a threshing device 114, and to store grains in a grain storage part 115. The grain stored in the grain storage unit 115 can be discharged to the outside of the machine by the unloader 116.

As shown in fig. 16 to 18 and 20, the prime mover 118 includes an engine 125 (an example of a device to be cooled), a radiator 126, a cooling fan 127, a dust box 128, an intercooler 129 (an example of an "air-cooled cooling device"), an oil cooler 130 for an operating machine (an example of another "air-cooled cooling device"), and an oil cooler 131 for a transmission (an example of another "air-cooled cooling device").

As shown in fig. 17 and the like, the engine 125 is supported by an upper portion of the body frame 111. The engine 125 is housed in an engine hood 132 (corresponding to a "frame body") that supports the driver seat 123 from below. The engine cover 132 includes a laterally-oriented upper surface portion 133 located above the engine 125, and a longitudinally-oriented side surface portion 134 provided to be continuous with the body lateral outer side of the upper surface portion 133. The side surface 134 has an opening 135 for ventilation. The engine cover 132 is formed to extend laterally outward so that the side surface portion 134 is positioned laterally outward of the body lateral side most outward front-rear frame 111A extending in the front-rear direction of the body frame 111.

The radiator 126 shown in fig. 16 to 18 and 20 is configured to cool the cooling water of the engine 125. The radiator 126 is located laterally outside the engine 125. The radiator 126 is accommodated in the engine cover 132. The radiator 126 is connected to the engine 125 via an upper hose 126A and a lower hose 126B. The upper hose 126A guides the cooling water heated by the engine 125 to the radiator 126. The lower hose 126B leads the cooling water cooled by the radiator 126 to the engine 125 and returns the cooling water.

The cooling fan 127 is configured to cool the engine 125, the radiator 126, the intercooler 129, the working machine oil cooler 130, and the transmission oil cooler 131. The cooling fan 127 is driven by a belt transmission 137 connected to an output shaft 136 of the engine 125. As shown in fig. 17, the driving of cooling fan 127 generates wind in a direction from radiator 126 toward engine 125. The cooling fan 127 is disposed outside the body with respect to the engine 125, and is disposed inside the body with respect to the radiator 126.

The intercooler 129 shown in fig. 16 to 18 and 20 is configured to cool the compressed air supplied to the engine 125. The intercooler 129 is connected to the engine 125 via a forward pipe 138 (an example of a "flexible hose") and a return pipe 139 (an example of a "flexible hose"). The outgoing pipe 138 and the returning pipe 139 are connected to an upper end portion of the intercooler 129. The forward pipe 138 and the return pipe 139 are formed of molded hoses, and have flexibility and shape retention. The forward pipe 138 introduces the air compressed by the supercharger into the intercooler 129.

The return pipe 139 introduces the compressed air cooled by the intercooler 129 into the engine 125.

The working-machine oil cooler 130 shown in fig. 16 to 18 and 20 is configured to cool the working oil of the hydraulic circuit device for driving the working system such as the cutting and conveying unit 113. The oil cooler 130 for the working machine is provided inside the body of the intercooler 129 and outside the body of the radiator 126. The working-machine oil cooler 130 is disposed so as to overlap the intercooler 129 in a side view (fig. 16). The working oil cooler 130 is connected to a hydraulic circuit device of a working system of a device to be cooled via a 1 st inlet pipe 140 and a 1 st outlet pipe 141 which are flexible hoses. The 1 st inlet pipe 140 and the 1 st outlet pipe 141 are connected to a lower end portion of the working machine oil cooler 130. The 1 st inlet pipe 140 and the 1 st outlet pipe 141 are formed of molded hoses, and have flexibility and shape retention properties. The 1 st introduction pipe 140 introduces the working oil from the hydraulic circuit device of the working machine system to the working machine oil cooler 130. The 1 st delivery pipe 141 delivers and returns the working oil cooled by the working machine oil cooler 130 to the hydraulic circuit device of the working machine system.

The transmission oil cooler 131 shown in fig. 16 to 18 and 20 is configured to cool the hydraulic oil of the transmission that performs the power transmission. The transmission oil cooler 131 is provided inside the body of the intercooler 129 and outside the body of the radiator 126. The transmission oil cooler 131 is located below the working machine oil cooler 130. The transmission oil cooler 131 is connected to a transmission of a device to be cooled via a 2 nd inlet pipe 142 and a 2 nd outlet pipe 143 which are flexible hoses. The 2 nd inlet pipe 142 and the 2 nd outlet pipe 143 are connected to a lower end portion of the transmission oil cooler 131. The 2 nd inlet pipe 142 and the 2 nd outlet pipe 143 are formed of molded hoses, and have flexibility and shape retainability. The 2 nd introduction pipe 142 introduces the hydraulic oil from the transmission case into the transmission case oil cooler 131. The 2 nd delivery pipe 143 leads out and returns the hydraulic oil cooled by the transmission oil cooler 131 to the transmission.

As shown in fig. 16, the 1 st inlet pipe 140 and the 1 st outlet pipe 141 connected to the working oil cooler 130, and the 2 nd inlet pipe 142 and the 2 nd outlet pipe 143 connected to the transmission oil cooler 131 are arranged in a state where a through hole 144 formed in a lateral surface portion of a laterally outer lower portion of the engine cover 132 is penetrated.

As shown in fig. 14 to 18, the dust box 128 is disposed laterally outside the engine cover 132. The dust box 128 has a 1 st dust screen 145 (equivalent to a "dust screen") that covers the outside of the body of the heat sink 126 in a state that allows ventilation and prevents the passage of dust. Further, as shown in fig. 17, the dust box 128 has a 2 nd dust screen 146 that allows ventilation from the rear side of the cab 117 and prevents passage of dust. As shown in fig. 16 and 18, the dust box 128 is supported by a pair of vertical support shafts 147 formed at the front end side of the engine cover 132. A pair of upper and lower locking tools 148 are provided at the rear end of the dust box 128.

As shown in fig. 17 and the like, in the closed state where the dust box 128 covers the lateral outer side of the engine cover 132, the lateral outer sides of the intercooler 129, the working oil cooler 130, the transmission oil cooler 131, and the radiator 126 are covered with the 1 st dust net 145. That is, when the dust box 128 described later is closed, the intercooler 129 is positioned between the 1 st dust screen 145 and the radiator 126. The dust box 128 can be held closed by the locking means 148. On the other hand, the dust box 128 is configured such that the dust box 128 can be swung open by releasing the locking tool 148. To explain, the dust box 128 can be rotated about the 2 nd vertical axis Y2 (corresponding to the "vertical axis") that is the center of the support shaft 147 by releasing the lock tool 148 as shown in fig. 15. When the dust box 128 is in the open-swing state, the lateral outer surface of the intercooler 129, the lateral outer surface of the working oil cooler 130, the lateral outer surface of the transmission oil cooler 131, and the lateral outer surface of the radiator 126 are exposed.

[ supporting Structure of Intercooler ]

As shown in fig. 16 and the like, a vertically long ladder-shaped member 149 assembled in a frame shape is fixed to the inner surface side of the body of the intercooler 129. The ladder-shaped member 149 includes a horizontally-oriented upper frame portion 150, a horizontally-oriented lower frame portion 152 located below the upper frame portion 150, and a pair of vertically-oriented vertical frame portions 153. The upper end of the intercooler 129 is fixed to the vertical frame 153 by a pair of first mounting portions 153A. Further, the lower end of the intercooler 129 is fixed to the vertical frame 153 by a pair of 2 nd mounting portions 153B. The upper and lower horizontal frame portions 150 and 152 are fixed to the pair of vertical frame portions 153 by being stretched across both ends thereof, respectively. The upper frame portion 150 is detachably attached to the side surface portion 134 of the engine cover 132 by a pair of 1 st butterfly bolts 154. The lower cross frame portion 152 includes an abutting portion 155 and a held portion 156. An opening 157 through which air can flow in the inside and outside direction of the machine body is formed between the pair of vertical frame portions 153 below the intercooler 129.

As shown in fig. 16 to 18, the forward pipe 138 and the return pipe 139 connected to the intercooler 129 are supported by the penetration support portion 158 provided in the engine cover 132. The intercooler 129 is supported by the forward pipe 138 and the return pipe 139 on the engine 125 side.

[ concerning the penetration support part ]

As shown in fig. 16 to 19, the through-support portion 158 has a vertical surface portion 159 and a horizontal surface portion 160 provided in connection with the vertical surface portion 159, and is formed in a substantially L-shape as a whole. The penetration support portion 158 supports the upper side of the forward pipe 138 and the return pipe 139 when attached to the engine cover 132. The through-support portion 158 is detachable from the hood 132. A pair of first insertion portions 161 each having a bent shape is formed on a vertical surface 159 of the through support portion 158. Further, a 2 nd insertion portion 162 having both ends left and a center portion bent downward in an L shape is formed in a lateral surface portion 160 penetrating the support portion 158.

As shown in fig. 19 and the like, the through-support portion 158 is moved in the lateral direction along the body, the pair of 1 st insertion portions 161 are inserted into the pair of insertion holes 163 formed in the side surface portion 134 of the hood 132, and the 2 nd insertion portion 162 is inserted into the opening edge portion 164 formed in the upper surface portion 133 of the hood 132, whereby the through-support portion 158 can be held on the hood 132. That is, the through-support portion 158 can be attached and detached only by moving it in the lateral direction of the body with respect to the engine cover 132.

As shown in fig. 16, 17, and the like, when the through-support portion 158 is attached to the engine cover 132, the forward pipe 138 and the return pipe 139 connected to the intercooler 129 are supported by the upper support portion 166 of the through-support portion 158 and the lower support portion 167 of the engine cover 132, respectively, via the annular rubber member 165.

[ concerning the regulating member ]

As shown in fig. 17 to 20, the engine cover 132 is provided with a restriction member 168 that restricts movement of the forward pipe 138 and the return pipe 139 when the intercooler 129 is opened. The restricting member 168 is formed in a rod shape. Restriction member 168 is fixed to a portion closer to intercooler 129 than opening edge 164 formed in upper surface 133 of hood 132.

[ oil cooler for working machine and oil cooler for transmission support Structure ]

As shown in fig. 16 and the like, the working oil cooler 130 and the transmission oil cooler 131 are fixed to a frame-shaped stack member 169. The stack 169 includes: a transversely oriented upper cross portion 170; a transversely-oriented lower transverse portion 171 located below the upper transverse portion 170; a pair of 1 st fixing portions 172 for fixing the upper end portion of the working-machine oil cooler 130 to the upper lateral portion 170; a pair of 2 nd fixing portions 173 for fixing the lower end portion of the oil cooler 130 for a working machine to the lower lateral portion 171; and a pair of 3 rd fixing portions 174 for fixing the transmission oil cooler 131 to the lower lateral portion 171. The upper lateral portion 170 is detachably attached to the side surface portion 134 of the hood 132 by a pair of 2 nd butterfly bolts 175. A pair of stays 176 having upright portions standing upward on the lateral outer sides are fixed to the side portions 134 of the engine cover 132. The lower horizontal portion 171 falls into the holding space of the pair of stays 176, and is supported from below by the stays 176. By dropping the lower lateral portion 171 into the holding space of the stay 176, the lateral movement of the body of the lower lateral portion 171 on the transmission oil cooler 131 side is suppressed.

[ maintenance relating to intercooler, etc. ]

As shown in fig. 17 and the like, when the dust box 128 is in the closed state, the held portion 156 of the ladder-like member 149 fixed to the intercooler 129 is held between the lower pressing portion 177 formed on the inner surface of the body at the lower end portion of the dust box 128 and the lower end portion of the side surface portion 134 of the engine cover 132.

Further, a vertical surface 159 penetrating the support portion 158 is sandwiched between an upper pressing portion 178 formed in the dust box 128 and an upper support portion 166 of the hood 132. This prevents through-support portion 158 from falling off from hood 132 when dust box 128 is in the closed state.

When the dust box 128 is rotated forward about the 2 nd vertical axis Y2 to be in an open swing state, the grip by the grip portion 156 is released, and the respective lateral outer side surfaces of the intercooler 129, the working machine oil cooler 130, the transmission oil cooler 131, and the radiator 126 are exposed.

Next, as shown in fig. 17 and 20, the 2 st wing bolts 154 that attach the upper cross frame portion 150 on the intercooler 129 side to the side surface portion 134 of the engine hood 132 are detached, and the ladder-like member 149 is in a state of being movable relative to the engine hood 132. Next, the penetrating support portion 158 is pulled out to the outside of the lateral direction of the machine body and detached from the engine cover 132, and the forward pipe 138 and the return pipe 139 are not restricted by the engine cover 132, and the forward pipe 138 and the return pipe 139 are in a state of being deformable to some extent. If this state is achieved, the intercooler 129 is supported only by the forward pipe 138 and the return pipe 139. That is, the intercooler 129 is configured to be rotatable by deformation of the forward pipe 138 and the return pipe 139. The intercooler 129 can be rotated around the vicinity of the through support portion 158 as a base point by deformation of the forward pipe 138 and the return pipe 139. In this way, the intercooler 129 is configured to be capable of opening and moving in a direction different from the opening and moving direction of the dust box 128.

Next, as shown in fig. 17 and 20, the 2 nd butterfly bolts 175, which attach the oil cooler for working machine 130 and the stacked member 169 on the transmission oil cooler 131 side to the engine cover 132, are removed. Then, the lower horizontal portion 171 is lifted from the stay 176 by slightly lifting the stack member 169. In this state, the working-machine oil cooler 130 and the transmission-case oil cooler 131 are supported only by the 1 st inlet pipe 140, the 1 st outlet pipe 141, the 2 nd inlet pipe 142, and the 2 nd outlet pipe 143.

In this state, the working-machine oil cooler 130 and the transmission-case oil cooler 131 can be opened and moved in a direction different from the opening and moving direction of the intercooler 129 and the opening and moving direction of the dust box 128. To be described, the intercooler 129 is swung upward with the restricting member 168 in contact with the passage pipe 138 and the return pipe 139 as a base point, and the working machine oil cooler 130 and the transmission oil cooler 131 are swung downward with the through hole 144 in contact with the 1 st inlet pipe 140, the 1 st outlet pipe 141, the 2 nd inlet pipe 142, and the 2 nd outlet pipe 143 as a base point. Since the deformation of the forward pipe 138 and the return pipe 139 is restricted by the restricting member 168, an excessive bending load does not act on the connection portion of the forward pipe 138 to the supercharger and the connection portion of the return pipe 139 to the engine 125. Further, since the 1 st inlet pipe 140, the 1 st outlet pipe 141, the 2 nd inlet pipe 142, and the 2 nd outlet pipe 143 have a certain degree of shape retention, the oil cooler 130 for the working machine and the oil cooler 131 for the transmission do not hang down more than necessary.

In a state in which the intercooler 129 is swung open and the operating oil cooler 130 and the transmission oil cooler 131 are swung open, the upper end portion of the upper cross portion 170 of the stack member 169 on the operating oil cooler 130 and the transmission oil cooler 131 side is abutted against and locked to the abutting portion 155 of the lower cross frame portion 152 of the ladder-shaped member 149 on the intercooler 129 side. That is, as shown in fig. 17 and 20, the intercooler 129 in the open swing state, the working oil cooler 130 in the open swing state, and the transmission oil cooler 131 are engaged with each other, and thereby the intercooler 129, the working oil cooler 130, and the transmission oil cooler 131 are held in the open swing state.

By setting this state, as shown in fig. 20, the lateral outer surface and the lateral inner surface of the intercooler 129, the lateral outer surface and the lateral inner surface of the working machine oil cooler 130, the lateral outer surface and the lateral inner surface of the transmission oil cooler 131, and the lateral outer surface of the radiator 126 can be exposed. This enables maintenance such as cleaning by blowing air to be easily performed on the intercooler 129, the working-machine oil cooler 130, the transmission-case oil cooler 131, and the radiator 126.

[ other modes for carrying out the invention in embodiment 2 ]

Another embodiment in which the above-described embodiment 2 is modified will be described below. Other embodiments described below are similar to embodiment 2, except for the matters described above. The above embodiment 2 and the other embodiments described below can be combined as appropriate as long as no contradiction occurs. The scope of the present invention is not limited to embodiment 2 and the other embodiments described below, and can be changed as appropriate within a scope not departing from the object of the present invention.

(1) In embodiment 2 described above, the dust box 128 is configured to be horizontally movable, and the intercooler 129 is configured to be vertically movable, but the present invention is not limited thereto. For example, the dust box 128 may be configured to be movable vertically, and the intercooler 129 may be configured to be movable horizontally. That is, it is preferable that one of the dust box 128 and the intercooler 129 is configured to be movable up and down, and the other of the dust box 128 and the intercooler 129 is configured to be movable horizontally. Further, another longitudinally-oriented support shaft may be provided behind the longitudinally-oriented support shaft 147 that rotatably supports the dust box 128, and the intercooler 129 may be rotatably supported on the other longitudinally-oriented support shaft. In this case, the dust box 128 is moved to be opened to the front side, the intercooler 129 is moved to be opened to the rear side, and the intercooler 129 is configured to be moved to be opened in a direction different from the direction in which the dust box 128 is moved to be opened.

(2) In embodiment 2 described above, the dust box 128 and the intercooler 129 are shown as being rotatable, but the present invention is not limited thereto. For example, either one or both of the dust box 128 and the intercooler 129 may be configured to be slidable.

(3) In embodiment 2 described above, the intercooler 129 is configured to be rotatable by deformation of the forward pipe 138 and the return pipe 139 as "flexible hoses", but the present invention is not limited to this. For example, the intercooler 129 may be configured to be rotatable about a support shaft.

(4) In embodiment 2 described above, the through support portion 158 is illustrated as being in contact with only the upper half portions of the forward pipe 138 and the return pipe 139, which are "flexible hoses", but the present invention is not limited to this. For example, another penetrating support portion 158 may be provided to cover the entire circumference of the peripheral portions of the forward pipe 138 and the return pipe 139, which are "flexible hoses".

(5) In embodiment 2 described above, the intercooler 129 serving as the "air-cooled cooling device" is configured to be rotatable upward, and the working-machine oil cooler 130 and the transmission-gear oil cooler 131 serving as the "other air-cooled cooling device" are configured to be rotatable downward, but the configuration is not limited thereto. For example, the intercooler 129 may be rotatable downward, and the working oil cooler 130 and the transmission oil cooler 131 may be rotatable upward. That is, it is preferable that one of the intercooler 129, the working-machine oil cooler 130, and the transmission oil cooler 131 is rotatable upward, and the other of the intercooler 129, the working-machine oil cooler 130, and the transmission oil cooler 131 is rotatable downward.

(6) In the above-described embodiment 2, the configuration in which the intercooler 129 serving as the "air-cooled cooling device" in the open swing state and the oil cooler 130 for the working machine and the oil cooler 131 for the transmission serving as the "other air-cooled cooling device" in the open swing state are engaged with each other to hold the intercooler 129, the oil cooler 130 for the working machine, and the oil cooler 131 for the transmission in the open swing state is exemplified, but the present invention is not limited thereto. For example, a dedicated holding member for holding the intercooler 129, the working machine oil cooler 130, and the transmission oil cooler 131 in an open swing state may be provided.

(7) In embodiment 2 described above, the intercooler 129 is illustrated as an "air-cooled cooling device", and the working machine oil cooler 130 and the transmission oil cooler 131 are illustrated as "another air-cooled cooling device", but the present invention is not limited thereto. The correspondence between the "air-cooled cooling equipment" and the "other air-cooled cooling equipment" may be replaced, or other equipment may be disposed as the "air-cooled cooling equipment" and the "other air-cooled cooling equipment".

(8) In the above-described embodiment 2, an example of application to a general-purpose combine harvester is shown, but the present invention can be applied to various work vehicles such as an auto-threshing type combine harvester, a tractor, and a lawnmower that perform threshing only on the ear tips of straws, in addition to the above-described general-purpose combine harvester.

[ 3 rd embodiment ]

Hereinafter, a case where embodiment 3 of the present invention is applied to a general-type combine harvester as an example of a working machine will be described with reference to the drawings.

As shown in fig. 21 and 22, a combine harvester is provided with a threshing device 203 and a grain tank 204 for grain recovery in parallel on the left and right sides of a traveling machine body 202 including a pair of left and right crawler traveling devices 201, and a steering section 205 is provided in front of the grain tank 204. A feeder 206 for transporting harvested straws is connected to the front part of the threshing device 203 so as to be vertically swingable around the horizontal axis, and a harvesting part 207 having a harvesting width corresponding to the approximate body width is connected to the front end of the feeder 206. The grain discharging device 208 is provided to transport grains stored in the grain tank 204 to the outside of the body.

The harvesting unit 207 includes a rotary reel 209 for gathering the planted straw rearward, a hair cutter-type harvesting device 210, a transverse feed auger 211 for transferring the harvested straw to the middle side of the machine body in the transverse width direction, and the like, and is configured to be capable of feeding the straw harvested by the harvesting device 210 in the transverse direction by the transverse feed auger 211 to the feeder 206.

As shown in fig. 21 and 25, prime mover 212 is provided below driver 205. The prime mover 212 includes an engine 213, a radiator 214 for cooling the engine, a cooling fan 215 for generating cooling air to the radiator 214, and the like. The upper side of motive power unit 212 is covered with an engine cover 216, and a driver seat 217 is supported on the upper side of engine cover 216.

A dust cover 218 is provided on the outer side of the motive power unit 212 in the lateral width direction of the machine body so as to face the outer side of the machine body, and the dust cover 218 sucks the outside air by the ventilation action of the cooling fan 215 and supplies the air to the radiator 214. The dust cover 218 includes a porous portion 219 for air intake at a position outside the body.

As shown in fig. 21 and 22, in the cab 205, a front panel 220 is provided on the front side of the body of the cab seat 217, and a side panel 221 is provided on the inner side of the body of the cab seat 217 in the lateral width direction. The front panel 220 includes a steering lever 222 and the like, and the side panel 221 includes a main shift lever 223, an auxiliary shift lever 224, a working clutch lever 225 and the like.

Next, the crawler travel device 201 will be described.

As shown in fig. 23, the crawler travel device 201 includes a drive wheel 226 located on the front side of the machine body, a tension wheel 227 located on the rear side of the machine body, a plurality of ground contact rollers 228 located therebetween, an upper roller 229 located on the upper side, and a crawler 230 wound over these respective wheels 226 to 229.

The drive wheel 226 and the upper roller 229 are rotatably supported by the body frame 231, and the plurality of ground engaging rollers 228 and the tension wheel 227 are rotatably supported by the crawler frame 232. The crawler frame 232 is supported by the body frame 231 so as to be movable up and down while maintaining a parallel or substantially parallel posture.

In front and rear 2 locations on the lower side of the body frame 231, pivot fulcrum shafts 233 and 234 are provided so as to penetrate in the body lateral direction and to be rotatably supported. The front and rear pivot shafts 233 and 234 are provided at inner portions of the body with operating arms 235 and 236 that pivot integrally with the pivot shafts 233 and 234, and the front and rear operating arms 235 and 236 are pivotally connected by a connecting rod 237.

Swing links 238, 239 that rotate integrally with the pivot shafts 233, 234 are provided at the body outer side portions of the pivot shafts 233, 234 on both the front and rear sides, and the swing ends of the swing links 238, 239 are pivotally supported and coupled to the crawler frame 232. The rear swing link 239 and the crawler frame 232 are pivotally supported and coupled via an auxiliary link 240 for preventing torsion.

The hydraulic cylinder 241 is pivotally supported and coupled to a fixed portion between the swing end of the rear side operation arm 236 and the body frame 231. By extending and contracting the hydraulic cylinder 241, the operating arms 235, 236 and the swing links 238, 239 located on both the front and rear sides are integrally pivoted about the axial centers of the pivot fulcrum shafts 233, 234, respectively, and are configured to move up and down relative to the body frame 231 while the crawler frame 232 is maintained in a horizontal posture.

As shown in fig. 24, the rear pivot shaft 234 projects outward from the body of the swing link 239, and the upper roller 229 is fitted to the projecting portion 234a so as to be rotatable. The upper roller 229 is configured as an outer roller type, and includes a pair of left and right turning guide portions 229a and 229b that guide turning of both left and right laterally outer portions of the metal core protrusion 242 of the crawler belt 230.

Of the left and right rotation guides 229a and 229b of the upper roller 229, the rotation guide 229a located on the outer side of the machine body is formed to have a wider width than the rotation guide 229b located on the inner side of the machine body. Specifically, the lateral width L1 of the outer rotation guide 229a is set to be larger than the interval L2 between the left and right core protrusions 242.

With this configuration, the upper roller 229 can be easily prevented from being damaged when traveling in a wet field. When traveling in a wet field, the following may be the case: soil enters between the body frame 231 and the crawler belt 230, the crawler belt 230 is pushed laterally outward, and the metal core projections 242 are disengaged from between the pair of right and left turning guide portions 229a and 229b of the upper roller 229 and ride on the outer peripheral portion of the outer turning guide portion 229 a. If this happens, the outer rotary guide 229a may enter between the left and right metal core protrusions 242, and in this state, even if the mud disappears, as shown in fig. 24, the left and right metal core protrusions 242 cannot return to the original state between the pair of left and right rotary guides 229a, 229b, and the outer rotary guide 229a may be damaged greatly in a short period of time.

However, since the lateral width L1 of the outer turning guide 229a is set to be larger than the interval L2 between the left and right core protrusions 242 as described above, the outer turning guide 229a does not enter between the left and right core protrusions 242, and if the soil disappears, the crawler belt 230 returns to the original state (the state shown in fig. 24) where it is appropriately turned and guided by the upper roller 229.

As shown in fig. 21 and 22, a canopy 243 for covering the upper side of the cab 205 is provided. The canopy 243 includes a support frame 244 supported by the body, and a flexible sheet 246 having flexibility and formed in a tensioned state on the support frame 244 to form a top cover portion 245.

As shown in fig. 21, the support frame 244 extends in a cantilever manner from the upper end of the support post 247 supported by the traveling body 202 of the combine harvester toward the front of the body. The flexible sheet 246 is equipped in a state of being tensed on the support frame 244. The support 247 is formed in a rectangular tube shape, and is inserted into and supported by a rectangular tube-shaped support member 248 from above, and the support member 248 is attached to the front wall portion 204A of the grain box 204 in a fixed state.

As shown in fig. 21 and 25, the lower end of the support member 248 is connected to the front wall 204A of the grain tank 204 via a receiving member 249 having a substantially L-shaped cross section, and the middle portion in the vertical direction is connected to a support base 251 fixed to the front wall 204A of the grain tank 204 via a bracket 250 having a substantially U-shaped cross section.

The support post 247 is inserted into the support member 248 from above, and the vertical position thereof is fixed by the separation preventing pin 252 to prevent separation. Although not shown, a plurality of insertion holes for insertion of the anti-slip pins 252 are formed in the support column 247 side at intervals in the vertical direction, and the insertion positions are changed by removing the anti-slip pins 252, so that the vertical position of the support column 247, that is, the entire canopy 243 can be changed in multiple stages.

As shown in fig. 26, the support frame 244 includes a top frame 253 as a peripheral frame forming body formed by bending a circular pipe material into a rectangular frame shape in a plan view, and a lateral frame 254 as a lateral connecting body extending across lateral side portions on both left and right sides of the top frame 253.

The lateral frame 254 is made of a circular pipe material, and is connected across a front-rear extension portion 253a as a lateral portion extending in the front-rear direction on both left and right sides of the top frame 253.

A horizontal plate-shaped horizontal reinforcing member 255 is integrally and continuously provided on the front side of the horizontal frame 254 over the entire length in the horizontal width direction. Further, the oblique reinforcing body 256 extending in the oblique direction is connected to the intermediate portion of the front portion of the lateral intermediate portion of the lateral reinforcing body 255 and the intermediate portion of the front-rear extension portion 253a on both left and right sides of the top cover frame 253.

A pair of front and rear sheet receiving members 257 are bridged and connected to the front and rear intermediate portions of the top cover frame 253, and the pair of front and rear sheet receiving members 257 support the flexible sheets 246 in the following states: the front and rear extensions 253a on both left and right sides are bent so that the center portion is positioned above each other. The pair of front and rear piece receiving members 257 are provided in a state of being arranged at an appropriate interval in the front-rear direction, and a round pipe material having a smaller diameter than the round pipe material constituting the top cover frame 253 is formed so that the middle portion thereof is bent upward.

The support frame 244 is supported so as to be capable of swinging about a horizontal axis P1 with respect to the support posts 247 and capable of changing and adjusting the posture to any one of a plurality of (4-step) vertical swinging positions. Further, an engagement type positioning mechanism K is provided, which can hold the vertical swing position of the support frame 244 at a set position.

As shown in fig. 21, the support post 247 is formed by bending its upper side toward the front side of the body. As shown in fig. 28 to 31, a laterally extending portion 258 in a shape of a rectangular pipe extending in the lateral direction is connected to the front end portion of the pillar 247. Support plates 259 extending in the longitudinal direction in the front-rear direction are connected to both left and right sides of the laterally extending portion 258. The support shaft 260 is spanned over the left and right support plates 259.

A cylindrical member 261 extending substantially the entire length is fitted to the support shaft 260 so as to be relatively rotatable, and the cylindrical member 261 and the support frame 244 are coupled via a pair of right and left brackets 262. The left and right brackets 262 are formed of a plate body in a vertical posture, are connected to the lower surfaces of the lateral frame 254, the lateral reinforcement 255, and the oblique reinforcement 256, and are integrally connected to the support frame 244.

The support shaft 260 is supported by the support posts 247 via the support plates 259 and the laterally extending portions 258 on both right and left sides, and the tube member 261 is fitted around the support shaft 260 so as to be rotatable. Since the tubular member 261 and the support frame 244 are coupled, the support frame 244 is supported at the upper portion of the strut 247 so as to be rotatable about the lateral axis P1 of the support shaft 260.

As shown in fig. 29, 4 engagement grooves 264 are formed at a predetermined angle around the horizontal axis P1 in the insertion holes 263 formed in the left and right support plates 259, whereby the inclination angle of the lid top 245 can be changed and adjusted in 4 steps. A guide groove 265 is formed in the insertion hole 263 at a position opposite to the engagement groove 264, and is located on a circumference centered on the lateral axis P1.

A support shaft 266 is rotatably supported across front upper side portions of the pair of left and right brackets 262, and a pair of left and right arm members 267R, 267L are supported at positions on the laterally inner side of the support shaft 266 with respect to the left and right brackets 262. A locking rod 268 made of a round bar is provided across the free end side portions of the pair of arm members 267R, 267L, and the locking rod 268 is provided in a state where the insertion holes 263 formed in the left and right support plates 259 are inserted.

The one (left) arm member 267L extends in a substantially L-shape in side view so as to be longer downward than the other (right) arm member 267R, and a grip portion 269 covered with a resin cover is formed at an extending end portion of the one arm member 267L.

As shown in fig. 29 and 30, a spring 272 is stretched over a spring receiver 270 provided in the other (right) arm member 267R and a spring receiver 271 provided in the tubular member 261, and the pair of arm members 267R and 267L are rotationally biased about the axial center P2 of the support shaft 266 by the biasing force of the spring 272. The locking lever 268 is biased toward one side of the plurality of engagement grooves 264 by the biasing force of the spring 272. That is, the lock lever 268 is held in position and the lid portion 245 is held in position by the biasing force of the spring 272.

When the posture of the cap portion 245 is changed, the hand-held portion 269 is operated against the biasing force of the spring 272 to release the engagement of the engagement rod 268 with the engagement groove 264 and change the posture of the cap portion 245, and then, if the operation of the hand-held portion 269 is stopped and the engagement rod 268 is engaged with another engagement groove 264, the cap portion is held at the position. The operator can change the posture by operating the auxiliary operating tool 277 provided on the left front-rear extension portion 253a with the left hand while operating the hand grip 269 with the right hand. Therefore, by selectively locking the locking lever 268 to any of the 4 engagement grooves 264, the top cover portion 245 can be changed to any of the 4-stage swing postures.

The coil spring 273 is provided as a biasing mechanism for biasing the support frame 244 to move upward around the lateral axis P1 across the support frame 244 and the support posts 247. As shown in fig. 30, a substantially U-shaped spring receiver 274 in plan view is integrally connected to portions of the rear side surface of the laterally extending portion 258 corresponding to the left and right brackets 262. The left and right spring receivers 274 are provided with adjusting screws 275 at rear upper portions thereof, and coil springs 273 are provided so as to extend over one end portions of the adjusting screws 275 and portions above the pivot axes of the left and right brackets 262.

The coil spring 273 is tensioned in a state where a tensile force acts thereon, and the support frame 244 is rotationally biased upward around the lateral axis P1 by the tensile force of the coil spring 273. With this configuration, it is possible to prevent the engagement portion between the lock lever 268 and the engagement groove 264 from shaking due to vibration of the body.

The adjusting screw 275 can insert the rear upper portion of the spring receiver 274 therethrough, and is fastened by the nut 276 from both front and rear sides to be fixed in position to the spring receiver 274, and can change and adjust the tension of the coil spring 273 by loosening the nut 276 to change and adjust the position in the front-rear direction. The engagement type positioning mechanism K is constituted by such a structure.

Next, the flexible sheet 246 forming the lid portion 245 will be described.

As shown in fig. 26, the flexible sheet 246 includes an upper surface portion 246A forming a ceiling surface of the lid portion 245, and a longitudinally oriented side surface portion 246B continuous with an outer peripheral portion of the upper surface portion 246A. The upper surface portion 246A is supported by the top cover frame 253 so as to be rectangular in plan view. A side surface portion 246B is formed continuously and downwardly hanging from the upper surface portion 246A over the entire circumference of the upper surface portion 246A.

The flexible sheet 246 is formed of a sheet member made of a material called a tarpaulin, which is made by sandwiching a woven fabric of polyester fibers between soft synthetic resin films from both sides. The tarpaulin is a well-known material used as a tent, a hood covering a cargo bed of a transport vehicle, and the like because it has waterproofness and high strength.

The flexible sheet 246 has a mounting portion 278 on the inner surface thereof with respect to the support frame 244.

The mounting portions 278 are provided in a plurality along the frame shape of the support frame 244 in a state of being positioned inside the frame of the frame-shaped support frame 244 in a plan view.

That is, as shown in fig. 27, the long sheet-like mounting member 279 extending along the frame shape of the support frame 244 is provided. The mounting member 279 is attached to the upper surface portion 246A of the flexible sheet 246 at a position slightly inside the peripheral edge portion. The mounting member 279 is configured by a sheet member made of a material called a tarpaulin, similarly to the flexible sheet 246, and is fixed by being welded to the flexible sheet 246.

As shown in fig. 32, the attachment member 279 is formed by folding a sheet-like body so as to sandwich a synthetic resin string-like body 280 extending in the longitudinal direction, sewing the vicinity of the string-like body 280 in the longitudinal direction in the folded state, and is formed so as to have a narrow width in the inward and outward directions of the frame shape and to have a long shape along the frame shape. Thus, the strength is enhanced by incorporating the string 280.

The mounting member 279 is mounted on the flexible sheet 246 by welding a region of a predetermined width on the inner portion of the frame shape over the entire region in the longitudinal direction by a high frequency welding machine (not shown). The high-frequency welder fusion-bonds the overlapped 2 sheet portions of the mounting component 279 and the flexible sheet 246 in a state of 3 sheets in total by induction heating.

The mounting member 279 includes a plurality of mounting portions 278 at appropriate intervals along the longitudinal direction, and the mounting portions 278 include insertion holes 281. As shown in fig. 32, the insertion hole 281 is formed by an eyelet part 282, and the eyelet part 282 fixes annular metal members on both sides of the sheet-like body by caulking and forms an opening at the center.

The insertion hole 281 and the support frame 244 are coupled by a string-shaped member 283, whereby the flexible piece 246 is attached to the support frame 244. As shown in fig. 33, the string-like member 283 is formed of a cable tie of a known structure used when bundling electric wires or the like. The cable tie has a serrated locking portion 284 formed at one end portion and a loosening prevention portion 285 provided at the other end portion, wherein the loosening prevention portion 285 allows the locking portion 284 to pass only in the insertion direction if inserted therethrough, and prevents the locking portion from moving in the opposite direction to prevent loosening.

As shown in fig. 32, the attachment member 279 can be attached to the top cover frame 253 by inserting the string-like member 283 through the insertion hole 281 provided in the attachment member 279, winding the string-like member around the outer periphery of the top cover frame 253, and inserting the locking portion 284 into the release preventing portion 285 to prevent the release.

In each of the plurality of attachment portions 278, the attachment member 279 is attached to the top cover frame 253 by the string-like member 283, whereby the flexible piece 246 can be attached in a state of being stretched outward in the frame shape over substantially the entire circumference, and the flexible piece 246 can be stretched in a state of being less slack with respect to the top cover frame 253, that is, the support frame 244.

As shown in fig. 25, the position Q1 of the hood 243 at the outside of the machine body substantially coincides with the position of the dust cover 218 at the outside of the machine body. The body inside end position Q2 of the canopy 243 substantially coincides with the body inside end position of the side panel 221. In this way, the canopy 243 covers the dust cover 218 and the upper side of the side panel 221, and therefore rain water and the like can be prevented from falling thereon.

[ other modes for carrying out the invention in embodiment 3 ]

(1) In the above-described embodiment 3, the insertion hole 281 is provided in the attachment portion 278, and the insertion hole 281 and the support frame 244 are connected by the string-like member 283, but instead of this, a sticking fastener, a button, a cloth with holes, or the like may be used as the attachment portion, and various embodiments may be implemented.

(2) In embodiment 3 described above, the long sheet-like attachment member 279 is attached to the inner surface side of the flexible sheet 246, but the flexible sheet 246 may be directly attached to the support frame 244 without using such a sheet-like attachment member 279.

(3) In embodiment 3 described above, the plurality of attachment portions 278 are provided along the frame shape of the support frame 244, but instead of this configuration, a configuration may be provided in which 1 attachment portion is provided, and the attachment portion may be formed to have a longer length or a shorter length along the frame shape.

(4) In embodiment 3 described above, the top frame 253 formed by bending a circular pipe material into a rectangular frame shape (a quadrangular shape) in a plan view is used as the peripheral frame forming body in the support frame 244, but instead of this configuration, for example, a circular pipe material formed into a substantially U shape in a plan view, a substantially H shape in a plan view, or the like may be used, and the top frame may be formed into various shapes, or a rectangular tubular material or a solid rod may be used, and the top frame may be formed into various shapes.

(5) In embodiment 3 described above, the coil spring 273 as the biasing means biases the support frame 244 to move upward around the lateral axis P1, but may bias the support frame 244 to move downward around the lateral axis P1. The structure of the urging mechanism can be variously modified, for example, a structure using a pulling urging force by a coil spring and a weight is not limited to the coil spring.

(6) In embodiment 3 described above, the position of the end portion on the outside of the machine body of the dust cover 218 and the position of the end portion on the outside of the machine body of the canopy 243 for the working machine are configured to substantially coincide with each other, but they may be configured to completely coincide with each other or may be configured to be non-coincident with each other. For example, the hood 243 for the work machine may be positioned in a state in which the outside end of the machine body is positioned further to the outside than the outside end of the dust cover 218, or may be positioned in a state in which the outside end of the machine body is positioned further to the inside.

(7) In embodiment 3 described above, the position of the end portion on the inside of the machine body of the side panel 221 is configured to substantially coincide with the position of the end portion on the inside of the machine body of the canopy 243 for the working machine, but the positions may be configured to completely coincide with each other or may be configured to be non-coincident with each other. For example, the hood 243 for the work machine may be positioned in a state where the end portion thereof on the inside of the machine body is positioned further inward than the end portion thereof on the inside of the machine body of the side panel 221, or may be positioned in a state where the end portion thereof on the outside is positioned further outward.

(8) In embodiment 3 described above, the combine is shown as the working machine, but the present invention is not limited to the combine, and may be a tractor or another working machine.

(9) The present invention can be applied to a canopy for a working machine that covers an upper portion of a cab of the working machine.

Description of the reference numerals

[ 1 st embodiment ]

4 threshing part

5 grain box (grain storage)

6 unloader

7 oil supply auxiliary table

10 machine body frame

23 post frame

40 fuel tank

42 oil supply port

52 concave part

80 protective member

81 rear extension frame

82 horizontal frame

A bicycle body (marching body)

Y upper and lower axes

p1 transverse axis core

[ 2 nd embodiment ]

125 Engine (device to be cooled)

126 heat sink

127 Cooling Fan

128 dust-proof box

129 intercooler (air cooling type cooling equipment)

130 oil cooler for working machine (other air-cooled type cooling equipment)

131 oil cooler for transmission (other air cooling type cooling equipment)

132 Engine hood (frame)

138 forward pipe (Flexible hose)

139 return pipe (Flexible hose)

145 th 1 dust screen (dust screen)

158 penetration support part

168 limiting member

Y2 No. 2 longitudinal axis (longitudinal axis)

[ 3 rd embodiment ]

205 driving part

212 prime mover

213 engine

214 radiator

215 cooling fan

217 driver's seat

218 dust cover

221 side panel

243 canopy

244 support frame

246 flexible sheet

247 supporting column

253 peripheral frame forming body

253a lateral side part

254 laterally oriented connecting body

255 transversely oriented reinforcement

256 slant reinforcement

273 force applying mechanism

278 mounting part

281 plug-in hole

283 rope-shaped component

K positioning mechanism

Q1 outer end of body

Q2 inner side end of body.

Claims (3)

1. A working machine is characterized in that a working machine body,

a fuel tank provided at the rear part of the traveling machine body;

a refueling auxiliary platform arranged at the rear of the fuel tank and used for placing a refueling container;

the fueling auxiliary stand is configured to be capable of switching an installation posture on the travel machine body to a use state in which a mounting surface faces upward and a storage state in which the mounting surface is located at a position facing a rear wall of the fuel tank.

2. A working vehicle is characterized in that,

the disclosed device is provided with:

a radiator that cools cooling water of an engine;

a cooling fan which is disposed inside the body with respect to the radiator and cools the radiator;

a dust-proof box which has a dust-proof net covering the outer side of the body of the radiator in a state of allowing ventilation and preventing dust from passing through, and can swing in an open manner;

an air-cooled cooling device located between the dust screen and the radiator;

the air-cooled cooling device is configured to be capable of opening and moving in a direction different from the opening and moving direction of the dust box.

3. A canopy for a working machine, which is characterized in that,

the flexible sheet is provided with a flexible top cover part formed by tensioning the supporting frame;

the support frame is formed into a frame shape in a plan view;

a mounting portion provided on an inner surface side of the flexible sheet and facing the support frame;

the mounting portion is provided in a state of being positioned inside the frame of the support frame having a frame shape in a plan view.

Images