JP2021061856A5 - - Google Patents

Description

combine

The present invention relates to a combine in which a threshing device and a grain storage unit are arranged side by side on a vehicle body frame.

As described above, there is a combine having the following structure in which the threshing device and the grain storage unit are arranged side by side on the vehicle body frame.
For example, a strut-shaped member for supporting the glen tank and the unloader on the rear side is attached to the rear side of the grain tank, and the lower end side of the strut-shaped member can be rotated around the vertical axis with respect to the vehicle body frame. It is pivotally supported by. Further, the support column-like member is supported by another vertical frame fixed on the vehicle body frame so as to be relatively rotatable. The fuel tank has a structure arranged in a narrow space between the threshing device and the strut-shaped member or the vertical frame on the rear side of the Glen tank (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-90556 (see paragraph "0021" and "FIG. 2", "FIG. 4", and "FIG. 6" in the drawings).

In the structure shown in Patent Document 1, when the tank is opened for maintenance or the like, the unloader also rotates around a common vertical axis like the Glen tank, and is maintained in a state where there is no relative change in posture. Has been done.
Since the unloader and the Glen tank are configured to rotate around a common vertical axis in this way, the relative postures of each other in a plan view do not change, so the Glen tank is opened for maintenance, etc. This is useful in that it does not require any trouble such as attaching / detaching the transmission structure between the Glen tank and the unloader or configuring the grain transport path so as to be intermittent in the middle.

However, in the above structure, the space on the rear side of the Glen tank has a grain removal device on one side in the left-right direction, and the Glen tank is rotatably supported on the other side around the vertical axis. There are many support structures such as pillar-shaped members and vertical frames, and the space for arranging the fuel tank is limited in a narrow range. Therefore, there is room for improvement in that it is difficult to dispose of a fuel tank having a large capacity.

The present invention is intended to make effective use of the space between the threshing device and the Glen tank so that a fuel tank having a large capacity can be arranged.

The technical means of the combine in the present invention has the following structural features and effects.
[Solution 1]
Technical means of the present invention taken in order to solve the above problems, with a threshing device and a grain reservoir are juxtaposed in a state in which side-by-side on the body frame, the threshing apparatus and the grain reservoir A fuel tank is arranged at the rear portion between the two, and an elbow portion of an unloader for discharging grains from the grain storage portion is provided behind the grain storage portion, and the fuel tank is the fuel tank of the fuel tank. The guard member, which is provided so that the lower end is located below the lower end of the elbow portion and regulates the contact of other objects from the lower side with respect to the fuel tank, is the grain removal device in the rear end portion of the vehicle body frame. It is provided in a state of protruding rearward from the part corresponding to.

[Action and Effect of the Invention of Solution 1]
According to the invention according to the above-mentioned solution 1, the space between the threshing device and the grain storage portion facing each other can be effectively used as a space for arranging the fuel tank on the vehicle body frame, and the capacity of the fuel tank can be increased. Moreover, since the fuel tank is located between the heavier threshing device and the grain storage section, it is easy to maintain a state in which the fluctuation of the vehicle body balance due to the increase or decrease of fuel is small even if the capacity is large. There is also an advantage.

[Solution 2]
Another technical means of the present invention taken to solve the above problems is that the fuel filler port of the fuel tank extends above the fuel tank, and the threshing device and the grain removal device are viewed in the front-rear direction of the machine. is that are provided et between the grain reservoir.

[Solution 3]
Another technical means of the present invention taken to solve the above problems is that the fuel tank is a second reduction device provided on the side portion of the threshing device on the grain storage portion side in the front-rear direction of the machine. a Rukoto is disposed at a position that overlaps with.

[Solution 4]
Another technical means of the present invention taken to solve the above problems is that the fuel tank is arranged behind the second reduction device .

[Solution 5]
Another technical means of the present invention taken to solve the above problems is that the fuel tank is arranged in a state adjacent to the rear end portion of the second reduction device .

[Solution 6]
In another technical means of the present invention taken to solve the above problems , a driver unit is provided in front of the grain storage unit, an engine is arranged below the driver's seat in the driver unit, and a fuel supply pipe is provided. is that the are grains reservoir of al provided along the body frame located below.

[Solution 7]
Another technical means of the present invention taken to solve the above problems is that the fuel filler port of the fuel tank is in a state of facing rearward at the rear of the fuel tank and adjacent to the guard member in a plan view. It is provided in a state.

[Solution 8]
Another technical means of the present invention taken to solve the above problems is that the fuel filler port is provided in a state of overlapping with the existing range of the guard member in a plan view.

[Solution 9]
In another technical means of the present invention taken to solve the above problems, the guard member regulates contact with another object from the lower side with respect to the elbow portion, and the elbow portion is the guard member in a plan view. It is provided in a state that overlaps with the existence range of.

It is a right side view of the whole ordinary combine. It is a top view of the whole ordinary combine. It is a top view which shows the positional relationship between a grain tank or a threshing device installed on a body frame, and a fuel tank. It is a rear view which shows the positional relationship between a grain tank or a threshing device installed on a body frame, and a fuel tank. It is a side view which shows the support structure of a grain tank and an unloader. It is a rear view which shows the support structure of a grain tank and an unloader. 6 is a cross-sectional view taken along the line VII-VII in FIG. 6 is a cross-sectional view taken along the line VIII-VIII in FIG. It is an exploded perspective view which shows the support structure part by a support frame and a mounting frame. It is explanatory drawing which shows the detached state of the mounting frame in a mounting part, (a) shows the state which the mounting frame is fitted to the annular support, and (b) shows the state which it pulled out. It is a conceptual diagram which shows the transmission system to a Glen tank. It is a rear view which shows the mounting part of the jack receiving plate. It is a perspective view which shows the mounting part of the jack receiving plate. It is a rear view which shows the positional relationship between the grain tank and the threshing apparatus installed on the vehicle body frame in another embodiment, and the fuel tank. It is a rear view which shows the mounting structure of the Glen tank and the unloader, and the fuel tank in another embodiment. The fuel tank in another embodiment is shown and is a horizontal sectional view. The fuel tank in another embodiment is shown, and it is sectional drawing in the vertical direction along the front-rear direction. It is a top view which shows the positional relationship between the linear body mounting plate and the linear body in another embodiment. FIG. 8 is a cross-sectional view taken along the line XIX-XIX in FIG. It is sectional drawing of the linear body mounting plate part in another embodiment. It is a top view of the whole ordinary combine in another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 〔overall structure〕
1 and 2 show a normal combine as an example of a combine.
This ordinary combine is provided with a driving unit B and a pre-cutting processing device C at the front position of a self-propelled machine A traveling by a pair of left and right crawler traveling devices 1, and grains cut by the pre-cutting processing device C. The self-propelled machine A is provided with a full-culm throwing type threshing device D to which the culm is sent, and a grain tank E (corresponding to a grain storage section) for storing grains supplied from the threshing device D.

The Glen Tank E has a working posture (a posture shown by a solid line in FIG. 2) and a self-propelled machine that are housed in the self-propelled machine A by turning around the vertical axis Y in a vertical posture at the rear position of the self-propelled machine A. It is freely switchable to an inspection posture (a posture shown by a virtual line in FIG. 2) extending laterally from A. An unloader F is provided on the rear surface of the grain tank E. The unloader F undulates around the swing axis X in the front-rear direction so that the posture can be switched between a retracted posture in which the discharge side end is directed upward and a discharge posture in which the discharge side end is directed outward. It is equipped to swing freely. Further, a fuel tank 4 is provided on a vehicle body frame 10 at a position corresponding between the Glen tank E and the threshing device D at the rear end of the self-propelled machine A.

An engine 3 is arranged below the driver's seat 2 of the driver unit B, and a mission case (shown) that transmits the driving force from the engine 3 to the left and right crawler traveling devices 1 at the center position of the front portion of the self-propelled aircraft A. Is provided. This mission case is equipped with a continuously variable transmission that continuously changes the driving force from the engine 3, and also has a built-in steering clutch (not shown) that interrupts and disconnects the driving force transmitted to the left and right crawler traveling devices 1. Has been done.

The pre-cutting treatment device C is configured to scrape the tip side of the planted culm by the rotary operation of the reel 5 and cut the root of the culm with a cutter 6. The cut culms (cut culms) are laterally fed by the lateral feed auger 7 and gathered near the entrance of the feeder 8, and all the culms are fed backward by the feeder 8 and sent to the threshing device D. It is configured. Further, the pre-cutting processing device C is configured to swing up and down around the horizontal axis (not shown) on the rear end side of the feeder 8. An actuator (not shown) such as a hydraulic cylinder that swings up and down is provided, and the cutting height of the grain culm can be adjusted by setting the swing amount by operating this actuator.

[Boarding driver]
The driver unit B is provided with a box-shaped engine cover 11 that covers the upper side of the engine 3, and a driver's seat 2 is provided on the upper surface of the engine cover 11. An intake case 11A is formed on the outer side of the engine cover 11, and an intake portion 11B provided with a dustproof net for sucking cooling air is formed on the outer surface side of the intake case 11A.
A control tower 12 is erected on the front side of the driver's seat 2, and an operation tool for controlling the steering of the self-propelled machine A and an operation tool for controlling the elevation of the pre-cutting processing device C are on the upper surface side of the control tower 12. A steering lever 13 that also serves as the above is provided.
As shown in FIG. 2, on the left side portion of the driver's seat 2, a side panel 14 extending from the position of the left lateral end portion of the control tower 12 toward the rear side is provided. On the upper surface 14A of the front end portion of the side panel 14, a main speed change lever 15A and an auxiliary speed change lever 15B are provided as a speed change operating tool 15 for controlling the traveling speed of the self-propelled machine A.

The threshing clutch lever 16A and the cutting clutch lever 16B are provided side by side on the upper surface 14A side of the side panel 14 at a position rearward from the speed change operating tool 15. The threshing clutch lever 16A and the cutting clutch lever 16B are operated by swinging the threshing clutch lever 16A back and forth to turn on and off the threshing clutch (not shown) in the threshing device D, and cutting by swinging the cutting clutch lever 16B back and forth. It is configured to perform an on / off operation of a cutting clutch (not shown) in the pretreatment device C.
Further, an operation box 17 equipped with a discharge clutch lever 18 is provided on a side panel 14 on the rear side of the threshing clutch lever 16A and the cutting clutch lever 16B. The discharge clutch lever 18 is an operating tool for performing an on / off operation of the discharge clutch G, which will be described later, in a state where the unloader F enables the grain discharge and a state in which the grain discharge is stopped.

The steering lever 13 provided on the upper surface side of the control tower 12 is maintained in a neutral posture in a non-operated state, and a mission case is performed by swinging in the left-right direction with reference to this neutral posture. The steering clutch built into the vehicle is controlled to realize the steering (turning) of the self-propelled aircraft A. Further, by operating the steering lever 13 in the front-rear direction, the actuator described above is controlled to raise and lower the pre-cutting processing device C.
The speed change operating tool 15 realizes a change in traveling speed by shifting a continuously variable transmission device by operating in the front-rear direction. The threshing clutch lever 16A is configured to perform an on / off operation of the threshing clutch that interrupts and disconnects the power to the threshing device D by operating in the front-rear direction. The cutting clutch lever 16B is configured to perform an on / off operation of the cutting clutch for connecting / disconnecting the power to the pre-cutting processing device C by operating in the front-rear direction.

As shown in FIG. 11, a discharge clutch G for transmitting the driving force from the engine 3 to the discharge system of the Glen tank E is provided, and the discharge clutch lever 18 described above is linked so as to operate the discharge clutch G. From such a configuration, by operating the discharge clutch lever 18 at the entry position, the discharge clutch G is engaged to transmit the driving force from the engine 3 to the bottom screw 21 of the Glen tank E, and further drive the unloader F. Then, the grain is discharged from the Glen tank E.

[Threshing device]
The threshing device D is an axial flow type handling cylinder (not shown) that is driven and rotated around the axis of the posture along the front-rear direction of the self-propelled machine A so as to handle the harvested culm supplied to the handling chamber. , And a sorting processing device (not shown) for sorting grains from the processed product obtained by the handling treatment.
In this sorting processing device, among the sorted grains, the first grain is supplied to the grain tank E by the grain frying device 9, and the second grain is handled by the second reducing device 19 in a handling chamber (FIG. (Not shown), straw debris other than grains are dropped and discharged from the rear of the sorting processing device to the rear of the self-propelled machine A.

[Glen tank]
As shown in FIGS. 1 and 5, the Glen tank E is provided with a bottom screw 21 at the bottom of the tank body 20 for feeding grains stored in the tank body 20 toward the rear. Most of the bottom wall 20A of the tank body 20 is lower in the left-right direction toward the outside so that the stored grains flow toward the outside of the self-propelled machine A in the working posture housed in the self-propelled machine A. It is formed on an inclined surface. Due to such a structure, the position of the bottom screw 21 is deviated to the outside of the self-propelled machine A.
As described above, the grains flow toward the outside of the self-propelled machine A so as to guide the grains toward the bottom screw 21 provided at the bottom in a state of being biased toward the outside of the self-propelled machine A. The portion provided with the bottom wall 20A formed on the inclined surface that becomes lower toward the outside in the left-right direction corresponds to the inclined portion of the lower constriction at the lower part of the Glen tank E.

As shown in FIG. 11, the front end of the screw shaft 21A of the bottom screw 21 projects forward from the front wall 20f of the tank body 20, and the intermediate shaft 22 in the lateral posture is connected to this projecting portion via the bevel gear 21B. ing. The engine power is transmitted to the intermediate shaft 22 via the output shaft 3a of the engine 3, the belt transmission mechanism 23, and the input shaft 24. The intermediate shaft 22 is provided in the front lower portion of the tank body 20 along the front wall 20f of the tank body 20.
The above-mentioned discharge clutch G is configured as a belt tension type that switches the continuation of the driving force by switching between the belt tension state and the relaxed state with respect to the belt transmission mechanism 23 that transmits the driving force from the engine 3 to the intermediate shaft 22. Has been done. The discharge clutch lever 18 is configured so that the tension of the belt of the belt transmission mechanism 23 can be adjusted, and the power is interrupted by adjusting the belt tension.

The rear end of the screw shaft 21A of the bottom screw 21 protrudes rearward from the rear wall 20r of the tank body 20, and the axis of the screw shaft 21A coincides with the swing axis X of the unloader F.
That is, the rear wall 20r of the tank body 20 is provided with a discharge cylinder portion 25 having a grain discharge port 20B for sending grains sent from the bottom screw 21 to the unloader F so as to project rearward. .. The discharge cylinder portion 25 is integrally connected and fixed to the rear reinforcing plate 27 attached to the rear wall 20r so as to reinforce the periphery of the grain discharge port 20B. Further, the discharge cylinder portion 25 is arranged so that its central axis coincides with the axis of the screw shaft 21A and the swing axis X of the unloader F, and the elbow portion 30 described later fits into the discharge cylinder portion 25. By being connected together, the entire unloader F including the elbow portion 30 is configured to be swingable around the swing axis X.

The rear side of the Glen Tank E, which can swing around the vertical axis Y, is supported by a support frame 50, which will be described later. On the front side away from the vertical axis Y, as shown by virtual lines in FIGS. 2 and 3, a well-known guide roller 26 (which rolls on the vehicle body frame 10 on the bottom side of the tank body 20) ( A mounting support (corresponding to a mounting support) is provided, and the guide roller 26 is configured to share and support the weight of the front side of the Glen tank E in the self-propelled machine A in the working posture.

[Unloader]
The unloader F is provided with an elbow portion 30 at the end on the introduction side corresponding to the upper side in the grain transport direction, and is a straight tubular vertical transport path R forming a linear vertical transport path R on the lower transport side of the elbow portion 30. The cylinder portion 31 is connected.
The elbow portion 30 has an introduction cylinder portion 30A that is fitted to the discharge cylinder portion 25 on the Glen tank E side from behind, and a lead-out cylinder portion 30B that is connected in a posture orthogonal to the introduction cylinder portion 30B. The vertical cylinder portion 31 is connected to the cylinder portion 30B.
The vertical cylinder portion 31 includes a straight tubular discharge cylinder 34 and a discharge screw 35 arranged inside the discharge cylinder 34 so as to form a linear vertical transport path R inside, and has a discharge side end. The portion is provided with a grain discharge port 36 for guiding grains in a direction orthogonal to the longitudinal direction of the discharge tube 34.

The unloader F configured in this way is configured to be freely switchable between a retracted posture in which the discharge side end is directed upward and a discharge posture in which the discharge side end is directed outward.
As shown in FIG. 4, in the retracted posture, the central axis Z (corresponding to the center of the cylinder axis) of the vertical cylinder portion 31 is slightly tilted inward of the self-propelled machine A with respect to the vertical line. Therefore, the vertical cylinder portion 31 is tilted to the left in the rear view. In the discharge posture, the central axis Z of the vertical cylinder portion 31 is in a posture slightly upward from the horizon, and the vertical cylinder portion 31 is in an inclined posture that rises to the right in the rear view.

The discharge screw 35 includes a screw shaft 35A, and the screw shaft 35A is rotatably supported around the central axis Z.
A part of the screw shaft 21A of the bottom screw 21 is inserted inside the introduction cylinder part 30A of the elbow part 30, and a part of the discharge screw 35 is inserted inside the lead-out cylinder part 30B of the elbow part 30. .. A bevel gear mechanism (not shown) having a pair of bevel gears that rotate around axes orthogonal to each other so as to transmit the driving force of the screw shaft 21A to the screw shaft 35A of the discharge screw 35 is provided inside the elbow portion 30. There is.

From such a transmission structure, the driving force of the bottom screw 21 can be transmitted to the discharge screw 35 via the bevel gear mechanism of the elbow portion 30. The grain of the grain tank E is transported from the bottom screw 21 to the discharge screw 35, and is discharged from the grain discharge port 36 at the end of the transport of the unloader F.
In this unloader F, the rotation direction of the bottom screw 21 is set to be counterclockwise (counterclockwise) when the Glen tank E is viewed from the rear. Therefore, when the grains are carried out from the unloader F, a torque in the lifting direction that causes the unloader F to move toward the retracted posture acts on the vertical cylinder portion 31 of the unloader F.

[Support structure]
A support structure for supporting the Glen tank E and the unloader F will be described.
The support structure includes a support frame 50 erected on the vehicle body frame 10 and a mounting frame 40 attached to the Glen tank E.

[Support frame]
As shown in FIGS. 4 to 8, the support frame 50 includes a vertical columnar portion 51 formed in a rectangular columnar shape by a square tubular material, a mounting plate 52 for a vehicle body frame 10 provided on the lower end side, and a vertical columnar portion 51. It is provided with a mounting portion 53 provided at a position closer to the lower portion in the middle position in the vertical direction of the above, and a holding support portion 55 provided at the upper end portion of the vertical columnar portion 51.
By bolting the mounting plate 52 at the lower end to the vehicle body frame 10, the vertical columnar portion 51 is fixed to the vehicle body frame 10 in an upright posture.
The mounting portion 53 provided at a position near the lower portion of the vertical columnar portion 51 includes a support bracket 53A composed of a downwardly open channel-shaped member and an annular support 53B provided on the upper surface side of the support bracket 53A. The support bracket 53A is provided in a state of being welded to the right lateral side surface of the vertical columnar portion 51 and projecting to the right lateral side. The annular support 53B is welded and fixed to the upper surface side of the support bracket 53A. The upper surface of the support bracket 53A and the annular support 53B form a mounting portion 53 that rotatably supports the mounting frame 40 described later from the lower side. That is, with the lower end of the mounting frame 40 mounted on the upper surface side of the support bracket 53A, the lower end of the mounting frame 40 is fitted to the annular support 53B, and the mounting frame 40 is supported from below. However, it has a support structure that is rotatable.

In the embracing support portion 55 provided at the upper end portion of the vertical columnar portion 51, as shown in FIGS. 5 to 9, mounting pieces 55a and 55a are welded to the right lateral outer side on both front and rear surfaces near the upper end portion. It is fixed, and a holding metal fitting 56 composed of a pair of left and right first holding bodies 56A and a second holding body 56B is bolted to the mounting pieces 55a and 55a.
The first embracing body 56A is a connecting plate that connects the first holding plate 56Aa that contacts the outer peripheral surface of the mounting frame 40 on the inner side of the machine body and the front and rear ends of the first holding plate 56Aa to the mounting pieces 55a and 55a. It is equipped with 56Ab. The second holding body 56B is provided with a second holding plate 56Ba that comes into contact with the outer peripheral surface of the mounting frame 40 on the outer side of the machine body at a position facing the first holding plate 56Aa, and both front and rear ends thereof are first held. It is bolted to the plate 56Aa.
Each of the first holding plate 56Aa and the second holding plate 56Ba is formed in a curved shape in which a portion in contact with the outer peripheral surface of the mounting frame 40 is recessed in an arc shape along the outer peripheral surface of the mounting frame 40. In the embraced state by the embracing support portion 55 configured in this way, the mounting frame 40 is allowed to rotate relative to the vertical axis Y, and the horizontal movement of the mounting frame 40 is restricted.

At the upper end of the vertical columnar portion 51, another mounting plate 57 is welded and fixed in the left lateral direction opposite to the right lateral outer side to which the embracing support portion 55 is attached, that is, toward the inside of the machine body. The sideways frame 58 is bolted to the mounting plate 57.
As shown in FIGS. 6, 8 and 9, the mounting plate 57 bends the plate material in a channel shape on the upper side and extends further downward from the lower end side of the channel-shaped bent portion. It has a shape with a plate portion. Then, instead of the plate surface facing the front-rear direction of the bent plate material, the end edge portion in the left-right direction of the plate material is welded and fixed in a state of being applied to the left side surface of the vertical columnar portion 51. The reason why the mounting plate 57 is bent and formed in this way is to increase the shape-retaining strength of the mounting plate 57 itself and to secure the length of the weld line with respect to the vertical columnar portion 51 so that the mounting plate 57 can be firmly mounted.
One end side of the lateral frame 58 is bolted to the plate surface facing the front-rear direction of the mounting plate 57, and the other end side of the lateral frame 58 is to the reinforcing rib-shaped member D1 fixed to the lateral side wall D2 of the threshing device D. It is bolted together. As a result, the lower end side of the vertical columnar portion 51 is fixed to the vehicle body frame 10, and the upper end side is connected and fixed to the threshing device D.

[Mounting frame]
The mounting frame 40, which is rotatably supported around the vertical axis Y with respect to the support frame 50 erected on the vehicle body frame 10, is the length of one side of the square tubular member constituting the vertical columnar portion 51 of the support frame 50. It is composed of a cylindrical member (corresponding to a columnar body having a circular cross section) having a diameter similar to that of the same.
The mounting frame 40 is connected to the rear wall 20r of the grain tank E by mounting brackets 41, 42, and 43 at three locations: near the upper end, near the lower end, and at the intermediate portion in the vertical direction toward the upper end. It is fixed.
Each mounting bracket 41, 42, 43 is composed of a square cylindrical member having a side length longer in the left-right direction than the diameter of the mounting frame 40, and the mounting frame 40 moves the mounting brackets 41, 42, 43 up and down. It is welded in a state of penetrating through and fixed integrally.

Further, the portion between the mounting bracket 41 near the upper end portion of the mounting frame 40 and the mounting bracket 42 near the upper end side in the middle portion is rotatably provided by the embracing support portion 55 provided at the upper end portion of the support frame 50. It is embraced and supported.
As shown in FIG. 10B, the lower end portion of the mounting frame 40 projects downward by a predetermined length d1 from the lower surface of the mounting bracket 43 near the lower end portion, and the protruding portion 40a is the support frame 50. It is fitted to the annular support 53B provided on the mounting portion 53.
At this time, the lower end surface of the mounting frame 40 is slightly raised from the upper surface of the support bracket 53A of the mounting portion 53, and the lower surface of the mounting bracket 43 near the lower end portion comes into contact with the upper end edge of the annular support 53B. , The mounting frame 40 is supported from the lower side.

The predetermined length d1 of the protruding portion 40a projecting downward from the lower surface of the mounting bracket 43 at the lower end of the mounting frame 40 is defined as follows. That is, as shown in FIG. 10A, the lower end surface of the mounting frame 40 is the support bracket 53A in a state where the protruding portion 40a is fitted to the annular support 53B provided on the support bracket 53A of the mounting portion 53. When the lower end portion of the mounting frame 40 is pulled out from the annular support 53B by lifting the grain tank E without touching the upper surface of the unloader F, the upper portion of the outer peripheral surface of the introduction cylinder portion 30A of the unloader F is the support bracket 53A. It is set so that it does not touch the lower edge of the.
That is, the fitting allowance between the protruding portion 40a and the annular support 53B is the upper portion of the outer peripheral surface of the introduction cylinder portion 30A of the unloader F and the lower end of the support bracket 53A when the grain tank E is installed at a predetermined position. It is set shorter than the vertical distance from the edge, and when loading and unloading the Glen Tank E on the vehicle body frame 10, the introduction cylinder portion 30A of the unloader F and the lower end edge of the support bracket 53A come into contact with each other and are damaged. It is configured to be avoided.
Further, on the upper side of the mounting frame 40, as shown in FIG. 10A, when the protruding portion 40a is fitted to the annular support 53B, the second holding plate 56Ba of the holding metal fitting 56 holds the first holding plate 56Ba. It is in a state of being connected to the plate 56Aa. When the grain tank E is lifted and the lower end portion of the mounting frame 40 is pulled out from the annular support 53B, the second holding plate 56Ba is removed from the first holding plate 56Aa. By doing so, the mounting bracket 42 at the intermediate position can be lifted to a position where it does not come into contact with the first holding plate 56Aa of the embracing metal fitting 56. In this state, as shown in FIG. 10B, the lower end portion of the mounting frame 40 is pulled out from the annular support 53B.

The central axis of the mounting frame 40 made of a cylindrical member is rotatably supported by the mounting frame 40 being fitted to the annular support 53B of the mounting portion 53 on the lower side, and is supported by being embraced on the upper side. Since it is rotatably supported by the portion 55, it constitutes the vertical axis Y which is the rotation center of the grain tank E.
That is, the mounting frame 40 is integrally configured with the Glen tank E via the mounting brackets 41, 42, 43, and the area center of the mounting frame 40 composed of the cylindrical member and the Glen tank E in a plan view. The center of rotation coincides with the vertical axis Y.

The mounting frame 40 between the mounting bracket 43 near the lower end and the mounting bracket 42 in the middle is provided with a receiving portion 44 for stably maintaining the retracted posture of the unloader F.
The receiving portion 44 is welded and fixed with a mounting plate 45 having a plate surface inclined so as to be higher on the right lateral outer side than the plane orthogonal to the vertical axis Y which is the central axis of the mounting frame 40. At the same time, the receiving plate 46 bolted to the mounting plate 45 extends to the rear side. The receiving plate 46 is provided with an arcuate curved recess 46A that follows the shape of the outer peripheral surface of the vertical cylinder portion 31 of the unloader F. Therefore, when the unloader F is in the retracted posture, the outer peripheral surface of the unloader F on the in-machine side comes into contact with the unloader F in a state of being fitted into the curved recess 46A of the receiving plate 46, and further in-machine from the unloader F's retracted posture. It is configured to prevent tilting toward the side and movement in the front-back direction.

As shown in FIGS. 5 to 9, a channel-shaped fixing side stopper piece 42A whose right lateral side is open is welded and fixed to the mounting bracket 42 in the intermediate portion on the right lateral side surface thereof. A movable side stopper piece 31A having an L-shaped cross section, which is located so as to overlap a part of the upper side of the fixed side stopper piece 42A in the retracted posture of the unloader F, is welded and fixed to the intermediate portion of the vertical cylinder portion 31 of the unloader F. ing. The fixed side stopper piece 42A on the mounting bracket 42 side is formed with two through holes 42Aa and 42Ab separated in the front-rear direction, and the movable side stopper piece 31A on the vertical cylinder portion 31 side is formed with the fixed side stopper piece 42A. One through hole 31Aa is formed at a position corresponding to one of the two through holes 42Aa and 42Ab.
Therefore, as shown in FIG. 8, in the retracted posture of the unloader F, one of the two through holes 42Aa and 42Ab of the fixed side stopper piece 42A on the mounting bracket 42 side and the movable side stopper piece on the vertical cylinder portion 31 side. When one stop pin 47 is inserted through one through hole 31Aa formed in 31A (the state in which the stop pin 47 is inserted through the through hole 42Aa is shown in FIG. 8), the vertical cylinder of the unloader F is inserted. The unloader F can be maintained in a locked state fixed to the mounting frame 40 in a posture in which the portion 31 is received by the receiving portion 44. The stop pin 47, the movable side stop piece 31A, and the fixed side stop piece 42A constitute a lock mechanism for restricting the position of the unloader F.
If the stop pin 47 is pulled out, the state of restricting the position of the unloader F by this lock mechanism is released. Then, if the extracted stop pin 47 is inserted into another through hole 421Ab of the fixed side stop piece 42A located at a position not overlapping with the movable side stop piece 31A in FIG. 8, it is extracted when the locked state is released. With the stop pin 47 held in the machine body, the unloader F can be freely undulated and swung.

As shown in FIG. 4, since the mounting frame 40 is arranged on the upper side of the mounting portion 53 extending toward the upper side of the introduction cylinder portion 30A of the unloader F with respect to the support frame 50, the rear surface thereof. Visually, it is located so as to substantially overlap with the vertical cylinder portion 31 in the retracted posture. As a result, the mounting frame 40 and the unloader F can be brought close to each other or overlap each other in the lateral width direction of the self-propelled machine A, and the space for arranging them in the left-right direction can be saved.

As shown in FIGS. 1 and 5, at the upper end of the mounting frame 40, when the grain tank E is present at the working position on the self-propelled machine A, the work light 49 illuminates the right lateral outside of the machine in a wide range. Is attached.
Since the work light 49 is provided at this position, a good working environment can be created by illuminating the discharge target portion from the unloader F when performing the grain discharge work in the discharge posture in which the unloader F is laid down sideways. It is what you get.
Further, as shown in FIGS. 6 and 10, at the upper part of the mounting frame 40, the mounting plate 57 for connecting the lateral frame 58 is an alarm for notifying that the self-propelled machine A is in the reverse state. Buzzer 59 is attached.

[Swing drive device]
An oscillating drive device for undulating and oscillating the unloader F will be described.
The swing drive device is composed of a double-acting hydraulic cylinder 60 that is telescopically driven. As shown in FIGS. 4 to 6, the hydraulic cylinder 60 is arranged over the Glen tank E having the mounting frame 40 rotatably supported by the support frame 50 and the unloader F.
That is, the upper end of the cylinder tube 61 located on one end side of the hydraulic cylinder 60 is connected to the Glen tank E side, and the lower end of the piston rod 62 located on the other end side is connected to the unloader F side. Hereinafter, the end portion on the cylinder tube 61 side is referred to as a first end portion, and the end portion on the piston rod 62 side is referred to as a second end portion.

The first end of the cylinder tube 61 is connected to a mounting bracket 42 at an intermediate portion extending rearward from the rear wall 20r of the Glen tank E. A channel-shaped connecting member 48 that is open downward is welded and fixed to the mounting bracket 42, and is swingably connected around the connecting pin 63 in the front-rear direction provided on the connecting member 48.

The second end, which is the end of the piston rod 62 located on the other end side of the hydraulic cylinder 60, is swingable around the connecting pin 64 with respect to the connecting bracket 39 provided in the vertical cylinder 31 of the unloader F. Is linked to. The connecting bracket 39 is externally fitted to a portion of the vertical tubular portion 31 of the unloader F adjacent to the elbow portion 30, and is attached to a tubular reinforcing member 38 fixed by welding.
In the hydraulic cylinder 60 deployed in this way, the first end portion connected to the mounting frame 40 is located at the upper position and the second end portion connected to the unloader F is located on the inner side of the self-propelled machine A. Is located at the lower position and on the lateral outer side of the self-propelled aircraft A from the first end.

As shown in FIG. 5, the vertical axis Y of the mounting frame 40 standing on the rear side of the Glen tank E in a side view is parallel to the central axis Z of the vertical cylinder portion 31 of the unloader F. The unloader F is located at a predetermined small interval in the front-rear direction with respect to the mounting frame 40, and the hydraulic cylinder 60 is arranged in the space having this small interval, and the vertical axis Y of the mounting frame 40 and the vertical axis Y. It has a center line CL parallel to the center axis Z of the vertical cylinder portion 31 of the unloader F in a side view.
That is, the connecting member 48 on the mounting frame 40 side is located rearward from the rear end edge of the outer peripheral surface of the mounting frame 40 in the side view, and the connecting bracket 39 on the unloader F side is the vertical cylinder of the unloader F in the side view. It is located on the front side of the front edge of the outer peripheral edge of the portion 31. The hydraulic cylinder 60 connected to the connecting member 48 and the connecting bracket 39 has its center line CL parallel to or substantially parallel to the vertical axis Y and the center axis Z in a side view. It is attached.
The swing axis X of the unloader F is orthogonal to the vertical axis Y, the center axis Z, and the center line CL. Therefore, when the unloader F swings up and down due to the expansion and contraction of the hydraulic cylinder 60, it is possible to avoid the possibility that the hydraulic cylinder 60 interferes with the unloader F and the mounting frame 40.

As shown in FIGS. Is in the retracted posture of the unloader F, and is received by the receiving portion 44 in a state of being slightly tilted inward of the self-propelled aircraft A.
In this retracted posture, the center line CL of the hydraulic cylinder 60 is provided in a state of being inclined more toward the inward side of the self-propelled machine A than the inclination of the center axis Z of the vertical cylinder portion 31 of the unloader F. There is.
That is, the connecting member 48 on the mounting frame 40 side to which the first end of the hydraulic cylinder 60 is connected is located on the lower surface side of the mounting bracket 42 in the intermediate portion connected to the mounting frame 40 in the rear view, and is a connecting pin. 63 is located near the vertical axis Y of the mounting frame 40. Further, the connecting bracket 39 on the unloader F side to which the second end of the hydraulic cylinder 60 is connected protrudes to the right side of the outer peripheral surface of the unloader F when viewed from the rear, and the connecting pin 64 is on the outer peripheral surface of the unloader F. It is located on the right side of the right edge.
The swing axis X of the unloader F is located laterally outside the self-propelled machine A with respect to the vertical axis Y of the mounting frame 40, and the unloader F is tilted toward the inside of the machine in the retracted posture. The inclination angle of the central axis Z of the vertical cylinder portion 31 of the unloader F with respect to the vertical line is smaller than the inclination angle of the hydraulic cylinder 60. Therefore, the inclination of the hydraulic cylinder 60 is larger than the inclination of the unloader F supported by the receiving portion 44.

The inclination of the hydraulic cylinder 60 is set by a force line as close as possible to the direction orthogonal to the central axis Z of the vertical cylinder portion 31 of the unloader F when the unloader F is smoothly undulated and swung. It is useful to be done. Further, since a connecting member 48 is provided so as to project to the right side of the right end edge of the outer peripheral surface of the mounting frame 40 and to connect the first end portion of the hydraulic cylinder 60, the connecting member 48 can be referred to, for example, the mounting frame. It is effective in shortening the length of the hydraulic cylinder 60 as much as possible, as compared with the case where the outer peripheral surface of the 40 is projected to the left side from the left end edge.
The second end portion of the hydraulic cylinder 60 is connected to a connecting bracket 39 attached to a tubular reinforcing member 38 fitted externally to a portion adjacent to the elbow portion 30 in the vertical cylinder portion 31 of the unloader F. .. By connecting at the position closest to the elbow portion 30 in the vertical cylinder portion 31, the turning radius of the movement locus r1 of the second end portion around the swing axis X of the unloader F is reduced, and the hydraulic pressure is reduced. This is effective in reducing the amount of expansion and contraction of the cylinder 60.

As shown in FIG. 4, the hydraulic cylinder 60 arranged in this way has a second end rather than a line segment L1 connecting the connecting pin 63 on the first end side and the swing axis X of the unloader F. The position of the connecting pin 64 of the portion is located on the lateral side of the self-propelled machine A. Therefore, the hydraulic cylinder 60 is configured to contract most in the retracted posture and expand most in the discharged posture.
In the process of shifting from the ejection posture to the retracting posture, the unloader F is a self-propelled aircraft that goes from an upright position on the vertical axis of the swing axis X of the unloader F to a position on the vertical line of the swing axis X. It reaches a retracted posture that is slightly tilted toward the inside of A.

In the hydraulic cylinder 60 that swings and drives the unloader F, pressure oil is applied to the oil chamber on the lower side of the cylinder tube 61 in the ascending swing stroke from the discharge posture until the unloader F stands upright on the vertical line of the swing axis X. Supply. At the same time, pressure oil is discharged from the oil chamber on the upper side to enable the piston rod 62 to move in the contraction direction. At this time, the weight in the direction in which the unloader F tends to return to the discharge posture side always acts on the oil chamber on the lower side of the hydraulic cylinder 60, and when the unloader F stands upright, the weight in that direction becomes zero.
In the swinging stroke in which the unloader F shifts to the retracted posture beyond the position where the unloader F moves upright on the vertical line of the swing axis X, the weight of the unloader F causes the piston rod 62 to tilt as the unloader F tilts toward the retracted posture. It acts to push up in the contraction direction.
Therefore, there is a risk that the operating speed of the hydraulic cylinder 60 will increase in the swinging stroke that shifts to this retracted posture, but by controlling the oil draining speed from the oil chamber (not shown) on the upper side of the cylinder tube 61. The operating speed of the hydraulic cylinder 60 can be adjusted.

In the downward swing from the state where the unloader F is in the retracted posture until the unloader F stands upright on the vertical line of the swing axis X, pressure oil is supplied to the oil chamber on the upper side of the cylinder tube 61. At the same time, pressure oil is discharged from the oil chamber (not shown) on the lower side to enable the piston rod 62 to move in the extension direction.
At this time, the weight in the direction in which the unloader F tends to return to the retracted posture side always acts on the oil chamber on the upper side of the hydraulic cylinder 60, and when the unloader F stands upright, the weight in that direction becomes zero.
In the swinging stroke in which the unloader F shifts to the discharge posture beyond the position where the unloader F moves upright on the vertical line of the swing axis X, the weight of the unloader F causes the piston rod 62 to tilt as the unloader F tilts toward the discharge posture. It acts to pull out in the extension direction.
Therefore, there is a risk that the operating speed of the hydraulic cylinder 60 will increase during the swinging stroke that shifts to this discharge posture, but the hydraulic cylinder 60 will operate by controlling the oil draining speed from the oil chamber on the lower side of the cylinder tube 61. The speed can be adjusted.

If the hydraulic cylinder 60 is a single-acting type, it cannot be driven smoothly by the unloader F having a structure in which the self-propelled machine A is slightly tilted inward and stored as described above. Being a dynamic type, there is no such problem.
That is, if the hydraulic cylinder 60 is a single-acting type and has a structure in which the pressure oil is supplied to the oil chamber on the lower side of the cylinder tube 61, the pressure oil cannot be supplied to the oil chamber on the upper side. It is not possible to swing down from the state where the unloader F is in the retracted posture until the unloader F stands upright on the vertical line of the swing axis X.
If the hydraulic cylinder 60 is a single-acting type and has a structure in which pressure oil is supplied to the oil chamber on the upper side of the cylinder tube 61, pressure oil cannot be supplied to the oil chamber on the lower side. It is not possible to perform an ascending swing from the state in which the unloader F is in the discharging posture until the unloader F stands upright on the vertical line of the swing axis X.
Since the hydraulic cylinder 60 of the present invention is a retractable type, pressure oil can be supplied to the oil chamber on either the upper side or the lower side of the cylinder tube 61. Therefore, the unloader F having a structure in which the self-propelled airframe A is slightly tilted inward and stored can be oscillated and driven without any trouble.

[Fuel tank]
As shown in FIGS. 1 to 4 and 6, the fuel tank 4 is arranged at a position corresponding between the grain tank E and the threshing device D on the vehicle body frame 10 at the rear end of the self-propelled machine A. It is set up.
The main body portion 70 of the fuel tank 4 is formed in a substantially rectangular box shape as a whole, and is provided with a fuel filler port 71 that opens toward the diagonally rear upper portion at the upper rear end side.
As shown in FIGS. 1 to 3, the front end side of the main body portion 70 is located near the rear end of the second reduction device 19 of the threshing device D, and the rear end side is from the rear wall 20r of the grain tank E. Is also extended to the rear side so as to extend beyond the rear end of the vehicle body frame 10 and to a range extending to substantially the same position as the rear end of the unloader F in the retracted posture.
In the left-right direction, as shown in FIGS. 2 to 4 and 6, about half of the right side on the front side slips into the lower space of the tank body 20 formed by the inclined bottom wall 20A of the Glen tank E. In the state, it is arranged between the threshing device D and the grain tank E.
Then, in the vertical direction, as shown in FIGS. 4 and 6, the upper end portion on the right side of the main body portion 70 is inclined with respect to the Glen tank E in the working posture housed on the self-propelled machine A. It is arranged in a state of being extremely close to a position close to the limit to avoid interference with the bottom wall 20A.

Further, as shown in FIGS. 1 to 5, the rear end side of the main body portion 70 is in contact with another object from the lower side or the rear side by the guard member 80 connected to the rear end portion of the vehicle body frame 10. Is configured to be suppressed. That is, the guard member 80 is composed of a pipe member formed in a U shape in a plan view, and the rear end side protrudes to the rear side from the rear end portion of the fuel tank 4 and the unloader F in the retracted posture, and in the left-right direction, It is provided in a range extending from the left side of the left end portion of the fuel tank 4 to the right side of the right end portion of the vertical cylinder portion 31 of the unloader F in the retracted posture.

Then, as shown in FIG. 1, the position on the rear end side of the fuel tank 4 is set to, for example, 30 degrees as the maximum inclination angle α allowed when the self-propelled airframe A crosses the ridge. Even when the self-propelled aircraft A is tilted backward to the maximum tilt angle α, it is set so as to avoid a direct collision with the traveling ground.
That is, as shown in FIG. 1, the rear end of the fuel tank 4 so that the line segment connecting the rear end of the main body portion 70 and the rear end of the crawler traveling device 1 substantially coincides with the line segment indicating the maximum inclination angle α. The position of the side is set. In this way, the position on the rear end side of the fuel tank 4 is extended to near the limit position where collision with the traveling ground can be avoided when the self-propelled aircraft A is tilted to the backward tilted posture to the maximum tilt angle α. As a result, the capacity of the fuel tank 4 can be further increased in the space on the vehicle body frame 10.
Further, in the lower part of the fuel tank 4, a guard member 80 extends to the rear of the position on the rear end side of the fuel tank 4. The angle β formed by the line segment connecting the rear end of the guard member 80 and the rear end of the crawler traveling device 1 is smaller than the maximum inclination angle α. Therefore, even if the self-propelled aircraft A tries to tilt backward to the maximum inclination angle α or more, or if there is a convex portion on the ground side, the guard member 80 first comes into contact with the ground, and the self-propelled aircraft A Since it suppresses backward tilting and contact of the fuel tank 4 with the convex portion, it is easy to avoid contact of the fuel tank 4 with other objects.

As shown in FIGS. 3, 6 and 8, the main body portion 70 of the fuel tank 4 is detachably fixed to the vehicle body frame 10 by a strip-shaped mounting band 72 at two locations in the front-rear direction.
The strip-shaped mounting band 72 is located from the lower position on one lateral side of the main body portion 70 of the fuel tank 4, along the outer peripheral surface of the main body portion 70, beyond the upper surface side of the main body portion 70, and downward on the other side. It is formed in an almost portal shape in the anteroposterior direction so as to reach the position.
One end side of the mounting band 72 is bent laterally outward and is provided as a bent piece 72a provided with a bolt insertion hole. On the other end side of the mounting band 72, a locking member 72b having a hole through which a bolt can be inserted from above is welded and fixed.
Although not shown, connecting bolts are attached to the vehicle body frame 10 at a position facing the bent piece 72a on one end side of the mounting band 72 and the vehicle body frame 10 at a position facing the locking member 72b on the other end side. Set nuts capable of screwing 73a and 73b are welded and fixed, respectively. This set nut is welded to the back surface side of the upper piece of the channel-shaped frame material constituting the vehicle body frame 10.

Therefore, on one end side of the mounting band 72, the one end side is fixed by inserting the connecting bolt 73a into the bolt insertion hole provided in the bent piece 72a and screwing it with the stop nut on the vehicle body frame 10 side. can do.
On the other end side of the mounting band 72, the mounting band 72 is tightened by passing another connecting bolt 73b through the bolt insertion hole of the locking member 72b and screwing it with the set nut on the vehicle body frame 10 side. The fuel tank 4 can be firmly fixed.

On the upper side of the fuel tank 4, as shown in FIGS. 2 to 4 and 8, there is a deck plate 81 provided on the upper part of the right lateral side wall D2 of the threshing device D, and the deck plate 81 is used as fuel. It covers the upper side of the space between the threshing device D and the Glen tank E including the tank 4.

[Jack receiver]
As shown in FIGS. 12 and 13, leg frames 10A and 10A for supporting the track frames 1A of the left and right crawler traveling devices 1 at the lower part of the vehicle body frame 10 are provided at two positions in the front and rear of the vehicle body frame 10. There is.
The two front and rear leg frames 10A and 10A are connected by two connecting plates 10B in a state where they are in contact with both the front and rear surfaces of the leg frames 10A and 10A, respectively.
A jack receiving plate 90 is welded and fixed to the lower end side of the above two connecting plates 10B over the connecting plates 10B on both the front and rear sides. The jack receiving plate 90 is provided with bent portions 90a in a state of being bent downward on the left and right end sides of the flat plate-shaped plate body.

The jack receiving plate 90 has a length in the left-right direction close to the distance in the left-right direction at the upper ends of the left and right leg frames 10A and 10A, but the length of the weld line in the left-right direction with respect to the connecting plate 10B is As shown by the diagonal lines in the figure, only a part of the central part in the left-right direction is welded, not the entire length in the left-right direction.
This is to prevent the influence of heat distortion and the like on the connecting plate 10B during welding of the jack receiving plate 90 from affecting the welded portion between the leg frames 10A and 10A and the connecting plate 10B.

By providing the jack receiving plate 90 configured in this way, as shown in FIG. 12, when the sleepers 92 and the like are attached between the jack 91 and the connecting plate 10B and jacked up, the sleepers 92 are provided. It is useful in that it is easy to avoid a situation where it breaks. Further, the bent portions 90a on both ends of the jack receiving plate 90 are for preventing misalignment when the jack 91 is attached to the end of the jack receiving plate 90 when one track frame 1A side is floated by the jack 91. belongs to.

[1 of another embodiment]
In the embodiment, as shown in FIGS. 3, 4, 6, and 8, the fuel tank 4 has a structure in which the entire main body portion 70 is formed in a substantially rectangular box shape. The fuel tank 4 of the present invention is not limited to such a structure.
For example, it may be configured as shown in FIGS. 14 to 17.

In this structure, as shown in FIGS. 14 and 15, the fuel tank 4 is provided with an upward surface 74A in a horizontal or substantially horizontal posture as a surface constituting the upper wall of the main body portion 70, and a lower portion of the grain tank E. An outwardly downward inclined surface 74B along the bottom wall 20A corresponding to the inclined portion of the horizontal constriction is formed over almost the entire length in the front-rear direction. The outwardly descending inclined surface 74B is set at an inclination angle parallel to or substantially parallel to the inclination of the bottom wall 20A corresponding to the inclined portion of the lower constriction provided in the lower part of the Glen tank E. In the left-right direction, the upward surface 74A and the inclined surface 74B are distributed to the left and right with the virtual dividing line TCL1 at the center position in the left-right direction so as to cover a length range of approximately 1/2 of the main body portion 70. It is formed in a state.
On the upward surface 74A, a fuel filler port 71 is erected rearward and upward at a position near the rear end portion. Further, as shown in FIGS. 16 and 17, a breather 75 for venting air as the internal pressure in the tank rises at a position near the virtual dividing line TCL2 at the center position in the front-rear direction of the upward surface 74A, And a fuel return pipe 76 through which the surplus fuel from the engine 3 is returned is connected. The breather 75 and the fuel return pipe 76 have an upward surface 74A at a position corresponding to an intermediate position in the left-right direction of the upper wall so that the position is close to the center of the area in the plan view of the fuel tank 4 even in the left-right direction. Is formed in.

In the fuel tank 4, the upward surface 74A and the outwardly downward inclined surface 74B form the upper wall of the main body portion 70. The inclined surface 74B and the rising wall surface 74C connected to the lower end of the inclined surface 74B form a horizontal wall located on the side of the main body portion 70 of the fuel tank 4 closer to the grain tank E. As described above, the inclined surface 74B is also a part of the upper wall and a part of the side wall of the fuel tank 4.
Of the lateral walls of the fuel tank 4 configured as described above, which are located on the side close to the Glen tank E, the upper end of the rising wall surface 74C connected to the lower end of the inclined surface 74B is above the lower end of the Glen tank E and is constricted. It is provided at a height position approximately the same as the height position in the middle of the bottom wall 20A corresponding to the inclined portion of the ball.
As a result, a filter device for the fuel tank 4, although not shown, is arranged between the rising wall surface 74C of the fuel tank 4, the lower half side of the bottom wall 20A of the grain tank E, and the upper surface of the vehicle body frame 10. A space that can be appropriately used for arranging the device is formed.

Further, a discharge port 77 for discharging the fuel oil in the fuel tank 4 is provided on the bottom wall portion of the main body portion 70. As shown in FIGS. 16 and 17, the position where the discharge port 77 is provided is a position corresponding to or near the center of the area of the bottom surface 74D inside the fuel tank 4. That is, the area center of the bottom surface 74D exists at or near the intersection of the virtual dividing line TCL1 at the center position in the left-right direction and the virtual dividing line TCL2 at the center position in the front-rear direction, and the discharge port 77 is the intersection. It is open to the bottom surface 74D at a position including or near the position including.

As shown in FIGS. 16 and 17, all of the breather 75, the fuel return pipe 76, and the discharge port 77 are arranged at positions close to the center of the area of the fuel tank 4 in a plan view. There is little possibility that the functions of the breather 75, the fuel return pipe 76, and the discharge port 77 will be impaired due to the change in the attitude of the traveling machine A.
That is, if the breather 75 and the fuel return pipe 76 are provided near the end on the front end side or the rear end side of the fuel tank 4, the self-propelled airframe A tilts in the front-rear direction as shown in FIG. Therefore, when the fuel tank 4 is tilted in the front-rear direction and the liquid level FL1 is high, there is a high possibility that the breather 75 and the fuel return pipe 76 are positioned lower than the liquid level FL1. On the other hand, if the breather 75 and the fuel return pipe 76 are arranged at a position close to the center of the area of the fuel tank 4 in a plan view, it is advantageous in that it is easy to avoid such a situation. be.
Further, when the discharge port 77 is provided near the end portion on the front end side or the rear end side of the fuel tank 4, as shown in FIG. 17, the self-propelled machine A tilts in the front-rear direction and the fuel tank. When 4 is tilted in the front-rear direction and the liquid level FL2 is low, the discharge port 77 may be exposed above the liquid level FL2 and the fuel oil in the fuel tank 4 may not be discharged. On the other hand, if the fuel tank 4 is arranged at or near the center of the area of the bottom surface 74D of the fuel tank 4, it is advantageous in that it is easy to avoid the occurrence of such a situation.

The inclination of the fuel tank 4 due to the attitude change of the self-propelled aircraft A as described above occurs not only in the front-rear direction but also in the left-right direction, but all of the breather 75, the fuel return pipe 76, and the discharge port 77 are the fuel tank 4. Since it is arranged near the center of the area in the plan view of the above, even if the fuel tank 4 is tilted in the left-right direction due to a change in the attitude of the self-propelled aircraft A, the breather 75 and the fuel are used for the same reason as described above. There is little risk that the functions of the return pipe 76 and the discharge port 77 will be impaired.

The fuel tank 4 does not have a rectangular box shape as shown in FIGS. 4 and 6, but corresponds to an inclined portion of a lower constriction provided in the lower part of the Glen tank E as shown in FIGS. 14 to 17. The fuel tank 4 is provided with an inclined surface 74B facing the bottom wall 20A and along the inclination of the bottom wall 20A. The shape is such that the corners facing the bottom wall 20A are cut off diagonally.
The inclined surface 74B portion is provided so as to be submerged under the bottom wall 20A of the Glen tank E, and the upward surface 74A portion is a lateral side wall D2 on the Glen tank E side in the threshing device D and a threshing device D in the threshing device E. The fuel filler port 71, which is located between the lateral side wall on the side and protrudes upward from the upward surface 74A, is also lateral to the lateral side wall D2 on the grain tank E side in the threshing device D and the grain removal device D side in the threshing device E. It is provided so as to be located between the side wall and the side wall (see FIG. 14).
The fuel tank 4 has a side wall facing the threshing device D side on the right side of the second reduction device 19 attached to the side wall D2 on the grain tank E side of the threshing device D, as shown in FIGS. 14 and 18. It is arranged so as to be located closer to the lateral side wall D2 on the grain tank E side in the threshing device D than the end. Further, the entire fuel tank 4 is located on the rear side of the second reduction device 19 in a range extending from the rear end side of the self-propelled machine A to the vicinity of the rear end portion of the second reduction device 19. The fuel tank 4 arranged in this way is arranged so as to overlap with the second reduction device 19 in the front-rear direction view.
As shown by a virtual line in FIG. 14, the outer portion of the fuel tank 4 has a vertical height as compared with the above-mentioned rectangular box-shaped fuel tank 4, even if the closest distance to the bottom wall 20A of the Glen tank E is the same. , And the width in the left-right direction is one size larger, and the total volume is increased as compared with the rectangular box-shaped fuel tank 4 even if the length in the front-rear direction does not change.

As shown in FIGS. 15 to 17, a transparent gauge pipe 78 connecting the upper part and the vicinity of the bottom portion in the fuel tank 4 is provided on the outside of the rear surface 74E of the fuel tank 4.
With the presence of the gauge pipe 78, the remaining amount of fuel in the fuel tank 4 can be visually confirmed from the rear side of the self-propelled machine A.
In this embodiment, the virtual dividing line TCL1 is provided at the center position in the left-right direction so that the upward surface 74A and the inclined surface 74B cover a length range of approximately 1/2 of the main body portion 70 in the left-right direction. An example is given of a structure formed in a state where it is sandwiched and distributed to the left and right, but the structure is not limited to this. For example, the left-right width of the upward surface 74A is wider than the left-right width of the inclined surface 74B, or conversely, the left-right width of the inclined surface 74B is wider than the left-right width of the upward surface 74A. You may do it.
Further, the positions of the breather 75, the fuel return pipe 76, and the discharge port 77 are not limited to those provided near the center of the area of the fuel tank 4 in a plan view, and may be arranged at appropriate positions.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[2 of another embodiment]
18 and 19 show, as another embodiment, the vehicle body frame 10 portion of the combine in which the linear body mounting plate 82 is provided on the vehicle body frame 10.
In this structure, three plate materials 83 (corresponding to the ridge plate portion) long in the front-rear direction are arranged side by side on the vehicle body frame 10 within the distance between the threshing device D and the grain tank E. A linear body mounting plate 82 is provided.
As shown in FIGS. 18 and 19, each of the plate members 83 having a chevron-shaped cross section is arranged in the linear body mounting plate 82 in a state where the plate members 83 have a small space d2 in the left-right direction.
In the linear body mounting plate 82, a recessed portion 84 is formed by a slope 83a between adjacent plate members 83. A fuel supply pipe 85a as a linear body 85 and a conductive cable 85b are arranged in the recessed portion 84 in a dropped state. Then, at the bottom of the recessed portion 84, a contaminant drop port 84a is provided downward by a small interval d2 formed between the adjacent plate members 83.

Therefore, it becomes possible to drop the contaminants from the bottom of the recess 84 for stably supporting the linear body 85, and there is an advantage that the tendency of the contaminants to be deposited on the bottom of the recess 84 can be reduced. ..
The cross-sectional shape of each plate material 83 constituting the linear body mounting plate 82 is not limited to the chevron shape as described above. For example, an appropriate shape such as a half-split arc shape that is convex upward or a channel shape with a downward opening can be adopted, but the recessed portion 84 formed between the adjacent plate members 83 can be formed. It is desirable to be formed so as to have a slope of the inferior constriction. Further, the small interval d2 may be set to an appropriate size according to the size of the linear body 85 so that dust or the like can be easily dropped without dropping the linear body 85.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[3 of another embodiment]
FIG. 20 shows another embodiment of the linear body mounting plate 82.
The linear body mounting plate 82 has an engaging hole 83b formed on a slope 83a of a plate member 83 having a chevron-shaped cross section. The linear body 85 is hugged and supported by a fixture 86 formed of a band-shaped elastic material such as a rubber band.
The fixture 86 is provided with a locking body 86a configured to be engageable and disengageable with respect to the engaging hole 83b formed on the slope of the plate material 83, and the locking body 86a is engaged with the engaging hole 83b. As a result, the linear body 85 can be reliably locked and supported at an intermediate position of the slope 83a of the plate member 83 located on one side of the recessed portion 84.
In this way, when the linear body 85 is locked and supported at an intermediate position of the slope 83a of the plate material 83 located on one side of the recessed portion 84, the linear body 85 and the plate material 83 located on the other side of the recessed portion 84 are supported. It is advantageous in that a gap is formed between the slope and the slope 83a, and the contaminants are more easily transferred to the contaminant drop port 84a side.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[4 of another embodiment]
FIG. 21 shows another embodiment of a conventional combine.
This ordinary combine is equipped with a driving unit B and a pre-cutting processing device C at the front position of the self-propelled machine A, and is a full-culm throwing type threshing device to which the grain culms cut by the pre-cutting processing device C are sent. A D and a grain tank E (corresponding to a grain storage portion) for storing grains supplied from the threshing device D are provided at the rear of the self-propelled machine A.
The Glen Tank E has a working posture (a posture shown by a solid line in FIG. 21) and a self-propelled machine that are housed in the self-propelled machine A by turning around the vertical axis Y2 in a vertical posture at the rear position of the self-propelled machine A. It is freely switchable to an inspection posture (a posture shown by a virtual line in FIG. 21) extending laterally from A.

The unloader F provided at the rear of the grain tank E has a vertical transport cylinder 28 for transporting grains upward and a horizontal transport cylinder 29 for horizontally transporting grains connected to the upper end of the vertical transport cylinder 28. It is configured to discharge grains from the transport end portion of the horizontal transport cylinder 29.
The horizontal transport cylinder 29 is configured to be able to swing and swing around the cylinder axis of the vertical transport cylinder 28, and the cylinder axis of the vertical transport cylinder 28 is the vertical posture which is the swing axis of the Glen tank E. It matches with the vertical axis Y2 of.

The fuel tank 4 is located on the vehicle body frame 10 at the rear end of the self-propelled machine A, which corresponds to the space between the grain tank E and the threshing device D, and is located in the left-right direction from the location of the vertical axis Y2. It is arranged so as to be located on the inner side of the self-propelled machine A. Therefore, even if the Glen Tank E or the unloader F turns around the vertical axis Y2 in the vertical posture, the structure is such that it is easy to avoid the possibility that the turning-operated Glen Tank E or the Unloader F interferes with the fuel tank 4. Can be done.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[5 of another embodiment]
In the embodiment, a structure using a hydraulic cylinder 60 as a swing drive device for swinging the unloader F up and down is shown, but the present invention is not limited to this.
For example, as the swing drive device, a wire connected to the vertical cylinder portion 31 of the unloader F may be wound up by a winch, and the winch may be driven in the forward and reverse directions by an electric motor. Further, it does not matter if the rocking drive device is not used.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[6 of another embodiment]
In the embodiment, the hydraulic cylinder 60 as a swing drive device for swinging the unloader F ups and downs is arranged over the mounting bracket 42 extending from the Glen tank E and the unloader F, but the structure is limited to this. It is not something that can be done.
For example, an appropriate configuration can be adopted, such as disposing the hydraulic cylinder 60 over the unloader F and the dedicated member provided on the mounting frame 40 separately from the mounting bracket 42.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[7 of another embodiment]
In the embodiment, the structure in which the receiving portion 44 for maintaining the retracted posture of the unloader F is provided on the mounting frame 40 is shown, but the present invention is not limited to this.
For example, the receiving portion 44 may be formed of a member separate from the mounting frame 40 and may be provided at a different location on the self-propelled machine A instead of the mounting frame 40.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[8 of another embodiment]
In the embodiment, an example is shown in which the discharge side end of the unloader F is configured to tilt inward in the self-propelled machine A in the retracted posture, but the present invention is not limited to this.
For example, in the retracted posture of the unloader F, the discharge side end may be configured to stand upright on the swing axis X of the unloader F, or to be slightly tilted toward the outside of the self-propelled machine A.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[9 of another embodiment]
In the embodiment, the hydraulic cylinder 60 that expands and contracts is exemplified as a removable type hydraulic cylinder 60, but the present invention is not limited to this, and a single acting type hydraulic cylinder 60 may be configured. In this case, when the discharge side end of the unloader F is configured to tilt inward of the self-propelled machine A in the retracted posture, the unloader F in the retracted posture is positioned to stand upright on the swing axis X. It is desirable to provide an urging spring or the like to return to.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[10 of another embodiment]
In the embodiment, a structure using a grain tank E with an unloader F is exemplified as the grain storage portion, but the structure is not limited to this. For example, for a configuration other than the configuration related to the unloader F, a combine having a structure using a hopper having a take-out opening at the lower portion may be adopted without providing the unloader F or the grain tank E. In this case, the hopper may be artificially opened and closed so that the grains can be taken out, and the bagging work or the like may be performed.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

The present invention can be applied not only to a normal type combine but also to a self-removing type combine.

2 Driver's seat
3 Engine 4 Fuel tank 10 Body frame 19 Second reduction device
30 Elbow part 71 Refueling port
80 guard member
85a fuel supply pipe
B driving unit D threshing equipment
E Grain Reservoir (Glen Tank)
F unloading da

Claims (9)

The threshing device and the grain storage unit are installed side by side on the car body frame, and they are installed side by side.
A fuel tank is arranged at the rear between the threshing device and the grain storage section .
Behind the grain storage section, an elbow section of an unloader for discharging grains from the grain storage section is provided.
The fuel tank is provided with the lower end of the fuel tank located below the lower end of the elbow portion.
A combine in which a guard member for restricting contact with another object from the lower side with respect to the fuel tank is provided so as to project rearward from the portion of the rear end portion of the vehicle body frame corresponding to the threshing device. The combine according to claim 1, wherein the fuel filler port of the fuel tank extends above the fuel tank and is provided between the threshing device and the grain storage portion in the front-rear direction of the machine. .. The combine according to claim 1 or 2, wherein the fuel tank is arranged at a position overlapping with the second reduction device provided on the side portion of the threshing device on the grain storage portion side in the front-rear direction of the machine. .. The combine according to claim 3, wherein the fuel tank is arranged behind the second reduction device. The combine according to claim 3 or 4, wherein the fuel tank is arranged adjacent to the rear end portion of the second reduction device. A driving unit is provided in front of the grain storage unit, and a driving unit is provided.
The engine is placed below the driver's seat in the driver's section.
The combine according to any one of claims 1 to 5, wherein the fuel supply pipe is provided along the vehicle body frame located below the grain storage portion. 13. combine. The combine according to claim 7, wherein the refueling port is provided so as to overlap the existing range of the guard member in a plan view. The guard member regulates the contact of other objects from the lower side with respect to the elbow portion.
The combine according to any one of claims 1 to 8, wherein the elbow portion is provided so as to overlap the existing range of the guard member in a plan view.