JP7065748B2 - Harvester - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention supplies to an engine a threshing device for threshing a harvested product, a grain tank for storing grains obtained by the threshing treatment, a grain discharging device capable of discharging grains from the grain tank, and an engine. Regarding a harvester equipped with a fuel tank for storing fuel.

For example, the harvester disclosed in Patent Document 1 includes a threshing device for threshing a harvested product, a grain tank for storing grains obtained by the threshing process, and grains capable of discharging grains from the grain tank. It is equipped with a grain ejection device. The grain tank is provided above the threshing device so as to be vertically aligned with the threshing device. The grain discharge device is configured to be switchable between a storage position stored above the grain tank and a discharge position protruding outside the machine body.

Japanese Unexamined Patent Publication No. 2018-0060062

By the way, in the harvester disclosed in Patent Document 1, since the grain tank is provided above the threshing device, the center of gravity of the machine becomes higher as more grains are stored in the grain tank. Therefore, it is desirable that the balance of the center of gravity in the left-right direction of the aircraft is located in the center of the left and right sides of the aircraft as much as possible.

In view of such circumstances, an object of the present invention is to provide a harvester in which the balance of the center of gravity of the machine is stably secured even if the grain tank is provided above the threshing device. ..

In the harvester according to the present invention, a grain removal device is provided at the center of the left and right sides of the machine body to perform a grain removal process, and a grain removal device is provided above the grain removal device so as to be vertically aligned with the grain removal device. A grain tank that stores the grains, a storage state that is connected to the lower part of the grain tank and is stored inside the machine, and a use that overhangs the outside of the machine and can discharge the grains from the grain tank. A grain discharging device that can be switched to a state and a fuel tank that is provided at a position lower than the grain tank and stores fuel to be supplied to the engine are provided, and the grain removing device is an upper portion of the grain removing device. The grain tank is provided above the front part of the grain removing device, and the grain discharging device is provided on one side of the machine body in the left-right direction with respect to the grain removing device. The fuel tank is provided on the other side of the machine body in the left-right direction with respect to the grain removal device, and the lower part of the grain tank on the one side in the left-right direction of the machine body is viewed from the rear. When the inclined portion formed in an inclined shape approaching the center side of the machine body is provided, the base end portion of the grain discharging device is connected to the inclined portion, and the grain discharging device is in the stored state. The grain tank is characterized in that it is stored in a space formed by the inclined portion on the lateral side on one side in the left-right direction of the machine body in a state of extending back and forth .

According to the present invention, the threshing device and the grain tank are arranged vertically side by side at the center of the left and right sides of the machine, and the grain discharge device and the fuel tank are arranged separately on the left and right sides of the machine with respect to the threshing device. Therefore, the center of gravity of the machine is moved to the center of the left and right sides of the machine as compared with the configuration in which the grain discharge device and the fuel tank are collectively provided on one side or the other side in the left-right direction of the machine with respect to the threshing device. Further, since the grain discharging device in the stored state is stored inside the machine body, the center of gravity of the machine body is moved to the inside of the machine body as compared with the configuration in which the grain discharging device is stored outside the machine body. Further, since the fuel tank is provided at a position lower than the grain tank, the center of gravity of the airframe is located lower than the configuration in which the fuel tank is provided at a height equal to or higher than the grain tank. With such a configuration, the balance of the center of gravity of the machine is improved, and even if the grain tank is provided above the threshing device, a harvester in which the balance of the center of gravity of the machine is stably secured is realized.

In the present invention, the grain tank has a first overhanging portion that projects from the threshing device to one side in the left-right direction of the machine, and a second overhanging portion that projects from the threshing device to the other side in the left-right direction of the machine. The grain discharging device is located in the lower region of the first overhanging portion in the stored state, and the fuel tank is arranged in the lower region of the second overhanging portion in front view. It is preferable to have.

In this configuration, since the grain tank overhangs both the left and right sides of the threshing device due to the left and right overhanging portions, the left and right width of the grain tank is equal to or less than the left and right width of the threshing device. The capacity of the tank increases. In addition, since the grain discharge device and the fuel tank in the stored state are located in the lower areas of the left and right overhangs, the balance of the center of gravity of the aircraft is improved even though the capacity of the grain tank is large. do.

In the present invention, on the other side of the machine in the left-right direction with respect to the threshing device, a vertical transport device for transporting the grains from the threshing device to the grain tank is provided, and the fuel tank is the transport device. It is preferable that it is arranged behind.

In this configuration, since the grain discharging device and the transporting device are arranged separately on the left and right sides of the machine, interference between the grain discharging device and the transporting device can be avoided. As a result, the degree of freedom in the storage posture of the grain discharging device in the stored state is increased. Further, the space behind the transfer device is effectively utilized by the configuration in which the fuel tank is arranged behind the transfer device.

In the present invention, it is preferable that the engine is arranged behind the grain tank and the fuel tank is arranged below the engine in a side view.

With this configuration, the engine and the fuel tank are arranged side by side, so that the piping for supplying fuel to the engine can be simplified.

In the present invention, a main frame extending in the front-rear direction of the machine body and supporting the threshing device, and a support frame supported by the threshing device and supporting the grain tank on the ground are provided, and the main frame is provided with the main frame. An outward surface portion facing laterally outward of the machine body is provided, a locking portion capable of locking the support frame is provided above the main frame of the threshing device, and the upper portion of the support frame is the locking portion. It is preferable that the lower portion of the support frame is fixed in a state of being locked to the outer surface portion and in contact with the outward surface portion.

According to this configuration, since the support frame is supported by the threshing device, it is possible to support the fuel tank on the left and right sides of the machine with respect to the threshing device. Further, the threshing device is provided with a locking portion, and the upper portion of the support frame is locked to the locking portion, thereby simplifying the assembling structure of the support frame. Further, in this configuration, the support frame is firmly supported by the locking portion and the main frame even when a large amount of fuel is stored in the fuel tank.

In the present invention, it is preferable that a battery for supplying electric power is provided, and the battery is arranged on one side in the left-right direction of the machine with respect to the threshing device and below the grain discharging device in the stored state. Is.

In this configuration, the fuel tank and the battery are arranged separately on the left and right sides of the machine, so that the distance between the fuel tank and the battery is preferably separated. Further, since the battery is arranged below the grain discharging device in the stored state, the space below the grain discharging device is effectively utilized.

It is a left side view which shows the whole combine. It is a right side view which shows the whole combine. It is a top view which shows the whole of the combine. It is a rear view which shows the grain discharge device and the fuel tank which were distributed and arranged in the left-right direction of the machine with respect to the threshing device. It is a right side view which shows the wall part of the threshing apparatus. It is a side view which shows the support frame which mounts and supports a fuel tank. It is explanatory drawing which shows the instruction structure of the support frame with respect to the threshing apparatus and the main frame. It is explanatory drawing which shows the base end part of the grain discharge device in the stored state. It is explanatory drawing which shows the base end part of the grain discharge device in the use state. It is a block diagram which shows the control system of a grain discharge device. It is a graph which shows the turning speed of the grain discharge device at the time of transitioning from a use state to a storage state. It is a side view which shows the irradiation part provided in the grain discharge device. It is a rear view which shows the irradiation of the irradiation part in the stored state and the use state. It is a side view which shows the extension part of the grain discharge device. FIG. 14 is a cross-sectional view taken along the line XV-XV of FIG. 14 showing an extension of the grain discharging device. It is a side view which shows the arrangement of a battery.

Hereinafter, a description will be given of a case where the embodiment of the harvester according to the present invention is applied to the ordinary combine shown in FIGS. 1 to 3 based on the drawings. In this embodiment, when defining the front-rear direction of the machine, it is defined along the direction of travel of the machine in the working state, and when defining the left-right direction of the machine, the left and right are defined in the direction of travel of the machine. Define. That is, the direction indicated by the reference numeral (F) in FIGS. 1 and 2 is the front side of the machine, and the direction indicated by the reference numeral (B) in FIGS. 1 and 2 is the rear side of the machine body. The direction indicated by the reference numeral (L) in FIG. 3 is the left side of the machine, and the direction indicated by the reference numeral (R) in FIG. 3 is the right side of the machine body.

〔overall structure〕
As shown in FIGS. 1 to 3, the combine includes a harvesting and transporting unit 1, a cabin 2, an operating unit 3, a threshing device 4, a grain tank 5, an engine 6 as a power source, and a pair of left and right. The front wheels 8 and 8 and a pair of left and right rear wheels 9 and 9 are provided. The harvesting and transporting unit 1 cuts the crops in the field and transports the harvested products to the rear. The crop is, for example, a planted culm such as rice, but may be soybean, corn, or the like. The harvest is, for example, a harvested culm. The driving unit 3 is covered with the cabin 2. The threshing device 4 is provided at the center of the left and right sides of the machine body, and threshs the harvested product cut by the cutting and transporting unit 1. In the threshing device 4, the harvested product is threshed. The grain tank 5 stores the grains obtained by the threshing process of the threshing device 4. The grain tank 5 is provided above the threshing device 4, and the threshing device 4 and the grain tank 5 are provided vertically side by side.

The rear wheel 9 is configured to be steerable. The front wheels 8 are configured to be non-steerable and are rotationally driven based on the power of the engine 6. A screw conveyor type grain discharge device 18 is provided on the left side of the body of the grain tank 5, and the grain discharge device 18 conveys the grains stored in the grain tank 5 to the outside of the machine.

The cutting transport unit 1 is supported on the front portion of the machine body by a cutting lifting cylinder 10 as a lifting actuator so as to be driven and lifted around a lateral fulcrum Q. The cutting transport unit 1 is provided with a cutting header 11 and a feeder 12. The cutting header 11 cuts the crop to be planted and gathers the cut crops in the central portion in the cutting width direction. The feeder 12 transports the crops that have been cut and gathered in the center toward the threshing device 4 at the rear of the machine.

The cutting header 11 is provided with a rotary reel 13, a cutting blade 14, and a lateral feed auger 15. The rotary reel 13 scrapes the tip side of the crop to be cut toward the rear. The cutting blade 14 is formed in a clipper shape, and the root of the crop is cut and cut. The lateral feed auger 15 gathers the cut crops at the center of the cutting header 11 in the cutting width direction.

Although not described in detail, a pair of left and right endless rotating chains are wound and stretched inside the cylindrical case of the feeder 12, and a plurality of locking conveyors are erected over each endless rotating chain. A conveyor 16 is provided. The transport conveyor 16 is configured to transport the crops delivered from the cutting header 11 toward the rear and upper direction.

The threshing device 4 is located at a low position at the center of the left and right sides of the machine, and the grain tank 5 is located above the threshing device 4 on the front side of the machine. Further, an engine 6 is provided behind the grain tank 5. The engine 6 is arranged behind the grain tank 5, and the grain tank 5 and the engine 6 are arranged in the front-rear direction. The outer sides of the left and right sides of the threshing device 4 are covered with the exterior cover 17.

As shown in FIG. 4, the width of the grain tank 5 is formed to be larger than the width of the threshing device 4 in the lateral direction of the machine body. In FIG. 4, the engine 6 and the exterior cover 17 are omitted in order to clearly show the relationship between the grain tank 5 and the threshing device 4 and the arrangement state of the grain discharge device 18 and the fuel tank 30. The width at the lower part of the grain tank 5 is formed smaller toward the lower side. That is, the grain tank 5 has a first overhanging portion 5A that projects to the left side of the machine as one side of the left and right sides of the threshing device 4, and a second overhanging portion 5A that projects to the right side of the machine body as the other side of the left and right sides of the threshing device 4. It has an overhanging portion 5B and. The grain tank 5 is formed in a downward constriction shape in the lateral direction of the machine body, and corresponds to the lower constriction-shaped first inclined surface 5a (corresponding to the "inclined portion" of the present invention) in the lower part of the first overhanging portion 5A. ) , And also has a lower constricted second inclined surface 5b at the lower part of the second overhanging portion 5B. In the present embodiment, the left side of the machine is described as one side in the left-right direction of the machine in the present invention, and the right side of the machine is described as the other side in the left-right direction of the machine in the present invention.

The details will be described later, but the fuel tank 30 is provided at a position lower than the grain tank 5 and stores the fuel to be supplied to the engine 6. The grain discharge device 18 is provided on the left side of the machine with respect to the threshing device 4, and the fuel tank 30 is provided on the right side of the machine with respect to the threshing device 4. The grain discharge device 18 is located in the lower region of the first overhanging portion 5A in the front view, and the fuel tank 30 is located in the lower region of the second overhanging portion 5B in the front view. ..

Further, as shown in FIGS. 1 and 2, the grain tank 5 is formed in a downward constriction shape in the anteroposterior direction, that is, in a lateral view, and has a front third inclined surface 5c and a rear fourth inclined surface. It has 5d and. Then, the discharge screw 5E is laterally oriented on the bottom of the grain tank 5 surrounded by the first inclined surface 5a, the second inclined surface 5b, the third inclined surface 5c, and the fourth inclined surface 5d. It is provided in.

As shown in FIG. 1, the grain discharge device 18 has a base end portion 18A, a cylinder portion 18B, and a discharge portion 18C, and the base end portion 18A is supported by a first inclined surface 5a (see FIG. 4). ing. Then, the base end portion 18A is rotatably supported with respect to the grain tank 5 around the axis orthogonal to the inclined surface. The base end portion 18A rotates due to the expansion / contraction operation of the hydraulic cylinder 35, and the cylinder portion 18B rotates (see FIGS. 8, 9, and 13). When the hydraulic cylinder 35 expands, the tip of the grain discharge device 18 projects laterally outward of the machine body, and when the hydraulic cylinder 35 contracts, the grain discharge device 18 moves between the grain removal device 4 and the grain tank 5. It is stored. That is, the grain discharging device 18 is connected to the lower part of the grain tank 5 and is stored in a stored state inside the machine body and in a used state in which the grains can be discharged from the grain tank 5 overhanging the outside of the machine body. It is configured to be switchable.
In the stored state, the longitudinal direction of the tubular portion 18B extends in the front-rear direction of the machine along between the threshing device 4 and the grain tank 5 on the left side of the machine. Further, in the used state, the longitudinal direction of the tubular portion 18B protrudes laterally and outwardly from the left side portion of the machine body, so that the grain discharge device 18 can discharge grains. The discharging portion 18C is provided at the swinging tip portion of the cylinder portion 18B, and grains are discharged outward from the discharging portion 18C. As shown in FIG. 12, flanges 18p and 18q for coupling are formed at each connecting portion between the tubular portion 18B and the discharging portion 18C along the circumferential direction of the cross section, and the pair of flanges 18p and 18q are bolts. It is connected.

A discharge screw 18F is provided inside the cylinder portion 18B. At the base end portion 18A, the discharge screw 5E and the discharge screw 18F are connected via a universal joint (not shown), and the discharge screw 5E and the discharge screw 18F rotate integrally when the grain discharge device 18 is in use. ..

In the stored state, the tubular portion 18B is inclined so as to be located upward toward the rear side of the machine body, and enters the recessed space S below the first inclined surface 5a. In this state, the tubular portion 18B is supported by the receiving portion 33. Further, in the used state, the tubular portion 18B is inclined so as to be located on the upper side of the machine body toward the tip side. The receiving portion 33 is supported by the left wall of the machine body of the threshing device 4.

As shown in FIGS. 1, 2, and 4, a pair of left and right main frames 20 extending in the front-rear direction of the machine body are provided in the lower part of the machine body. The left and right main frames 20 support the entire machine and support the threshing device 4. The left and right main frames 20 are made of a channel material having a substantially C-shaped cross section, and are provided long in the front-rear direction from the front portion of the machine body to the rear part of the machine body. The front axles 8a of the left and right front wheels 8 and the rear axles 9a of the left and right rear wheels 9 are provided at positions lower than the left and right main frames 20. The left and right front wheels 8 and the left and right rear wheels 9 are provided so as to be located on the left and right outer sides of the aircraft of each of the left and right main frames 20, and the left and right main frames 20 are the left and right front wheels 8 and the left and right rear wheels. It is supported by 9.

As shown in FIG. 5, the threshing device 4 is provided with a handling unit 21 and a sorting processing unit 22.
The handling portion 21 is placed and supported on the left and right main frames 20 and 20, and the handling portion 21 is covered by the left and right side walls 26 and 26 and the upper top plate 27. The handling unit 21 has a handling cylinder 21A and a receiving net (not shown), and the harvested product conveyed from the feeder 12 (see FIGS. 1 to 3) is put into the handling unit 21 and threshed. .. The handling cylinder 21A is tilted so that the rotation axis X of the handling cylinder 21A becomes higher toward the rear side of the machine body. That is, the handling cylinder 21A inclines backward. Similar to the handling cylinder 21A, the receiving net also tilts backward when viewed from the side.

As shown in FIGS. 1 and 2, the sorting processing unit 22 is provided below the handling unit 21, and the sorting processing unit 22 collects the processed material leaking from the receiving net from the grain and the paddy with branches. Etc., and sort into waste straw waste, etc.

As shown in FIGS. 1 to 5, adjacent to the right side of the machine of the threshing device 4, a grain raising device 24 as a vertical transfer device and a screw conveyor type second product reduction device 25 are provided. ing. The grain frying device 24 is provided on the right side of the machine with respect to the threshing device 4, and transports grains from the threshing device 4 to the grain tank 5. The grain frying device 24 includes a bucket conveyor type first grain frying device 24A and a screw conveyor type second grain frying device 24B. Although not shown, the bottom of the sorting processing unit 22 is provided with a first item recovery screw and a second item recovery screw. The second item recovery screw is provided on the rear side of the machine body with respect to the first item recovery screw. The grains sorted by the sorting processing unit 22 are sent to the first grain raising device 24A by the first picking screw. Then, the grain is transported upward by the first grain frying device 24A, delivered to the second grain frying device 24B, transported diagonally forward, and stored in the grain tank 5. The second product obtained by the sorting processing unit 22 is sent to the second product reduction device 25 by the second product recovery screw. A screw conveyor is provided inside the second product reducing device 25, and the second product is reduced to the front part of the threshing device 4 by the second product reducing device 25. Therefore, the second product reducing device 25 is inclined forward over the bottom portion of the sorting processing unit 22 and the front portion of the threshing device 4. The second product reducing device 25 is located closer to the inside of the machine body than the first grain raising device 24A, and is located between the first grain raising device 24A and the side wall 26 on the right side of the machine body in the front-rear direction. The waste straw waste and the like are discharged to the outside via the shredding processing device 23 on the rear side of the machine body of the threshing device 4.

Each of the left and right side walls 26, 26 has a wall surface covering the entire wall portion. The lower ends of the left and right side walls 26, 26 are bolted to the main frames 20 and 20, respectively, and are mounted and supported on the main frames 20, 20 respectively. On the other hand, the top plate 27 is inclined backward along the rotation axis X of the handling cylinder 21A. Therefore, the left and right side walls 26, 26 are configured to be wider toward the rear side of the machine body in the vertical direction.

FIG. 5 shows a side wall 26 on the right side of the handling portion 21. A plurality of square tubular vertical frames 28 are provided at locations on the lateral outer side of the machine body with respect to the side wall 26 at intervals in the front-rear direction. A front vertical frame 28F is provided at the front end of the side wall 26, and a rear vertical frame 28R is provided at the rear end of the side wall 26. A front-rear frame 29 is provided over the front vertical frame 28F and the rear vertical frame 28R, and the front-rear frame 29 extends along the direction of the rotation axis X of the handling cylinder 21A.

[Fuel tank]
As shown in FIGS. 2 and 3, a fuel tank 30 is provided on the right side of the machine body with respect to the threshing device 4, and the fuel tank 30 supplies fuel to the engine 6. The fuel tank 30 is arranged below the engine 6 in a side view. Further, the fuel tank 30 is provided behind the grain raising device 24, and interference between the fuel tank 30 and the second product reducing device 25 is avoided. The fuel tank 30 has a shape that is narrow in the left-right direction of the machine body and wide in the front-rear direction of the machine body and the vertical direction of the machine body.
Therefore, while the narrow area between the threshing device 4 and the exterior cover 17 is effectively utilized, a large fuel storage capacity of the fuel tank 30 is secured.

As shown in FIG. 4, the fuel tank 30 is mounted on the support frame 31. As shown in FIGS. 6 and 7, the support frame 31 includes a mounting table 31A, three vertical support frames 31B, 31C, 31D, and three horizontal support frames 31E, 31F, 31G, and is L-shaped in cross-sectional view. It has an upper support frame 31H and the like. The mounting table 31A is located below the support frame 31 and mounts the fuel tank 30. The lower end of the vertical support frame 31B and the inner side of the machine body of the horizontal support frame 31E are connected by welding, and the vertical support frame 31B and the horizontal support frame 31E form an L-shaped member in the front-rear direction. The vertical support frame 31C and the horizontal support frame 31F are also connected in the same manner as the vertical support frame 31B and the horizontal support frame 31E, and the vertical support frame 31D and the horizontal support frame 31G are also connected in the same manner as the vertical support frame 31B and the horizontal support frame 31E. Has been done. In this way, the three vertical support frames 31B, 31C, 31D and the three horizontal support frames 31E, 31F, 31G form three L-shaped members, and the L-shaped members are arranged in the front-rear direction. It is arranged in. Then, the upper support frame 31H is welded and fixed over the upper ends of the three vertical support frames 31B, 31C, 31D, and the mounting table 31A is over the three horizontal support frames 31E, 31F, 31G, respectively. It is fixed by welding.

An auxiliary support frame 31P is provided at the rear of the support frame 31. The vertical direction of the auxiliary device support frame 31P extends over the mounting table 31A and the upper support frame 31H, and the left-right direction of the auxiliary device support frame 31P is equivalent to the left-right direction of the mounting table 31A. The auxiliary device support frame 31P supports, for example, a fuel pump 47 that supplies fuel from the fuel tank 30 to the engine 6, and a fuel supply auxiliary device 47 such as a separator that removes impurities such as water contained in the fuel. See Figure 4). In addition to these fuel supply auxiliary machines 47, the auxiliary device support frame 31P is provided with an irradiation unit 49 that irradiates the rear of the machine body, a horn 48 having a voice notification function, and the like (see FIG. 4).

As shown in FIGS. 6 and 7, a locked portion 31I is provided between the upper support frame 31H and the mounting table 31A in the vertical direction. The locked portion 31I is welded and fixed to the upper portions of the three vertical support frames 31B, 31C, and 31D so as to be inclined backward so as to be positioned higher toward the rear side of the machine body. The locked portion 31I is formed in an L shape in a cross-sectional view by an upper surface facing the upper side of the machine body and a side surface facing the outer side of the machine body. Both the upper surface and the side surface of the locked portion 31I are formed in a planar shape. A pair of front and rear locked holes 31j and 31j are formed on the upper surface of the locked portion 31I, and a pair of front and rear bolt insertion holes 31n and 31n are formed on the side surface of the locked portion 31I. Further, the end portions 31k, 31k, 31k on the lateral inner side of each of the three lateral support frames 31E, 31F, 31G are formed in a planar shape, and a pair of upper and lower bolt insertion holes 31m are formed in these planar end portions 31k. 31m is formed.

As shown in FIGS. 5 and 7, a locking portion 32 is provided on the side wall 26 on the right side of the handling portion 21. The locking portion 32 is provided above the main frame 20 of the threshing device 4, and is configured so that the support frame 31 can be locked. The locking portion 32 is formed in an L shape in a cross-sectional view by an upper surface facing the upper side of the machine body and a side surface facing the outer side of the machine body. The locking portion 32 is supported and fixed to the rear vertical frame 28R and the vertical frame 28 adjacent to the rear vertical frame 28R, respectively, via a support stay 32A. Further, the locking portion 32 is inclined backward along the front and rear frames 29. That is, the front-rear frame 29, the locking portion 32, and the locked portion 31I are inclined backward along the direction of the rotation axis X of the handling cylinder 21A of the handling portion 21. Then, a pair of front and rear protrusions 32b, 32b are formed on the locking portion 32, and each of the protrusions 32b, 32b is configured to protrude upward from the locking portion 32 so as to be engaged with the locked hole 31j. ing.

Three outward surface portions 20a, 20a, 20a are provided side by side on the main frame 20 on the right side of the fuselage, and each of the outward surface portions 20a, 20a, 20a is formed on a plane so as to face laterally outward of the fuselage. It is configured so that it can come into contact with the ends 31k, 31k, and 31k. A pair of upper and lower bolt fastening holes 20b, 20b are formed in these outward surface portions 20a.

When the locked portion 31I is placed on the locking portion 32, the pair of front and rear protrusions 32b and 32b in the locking portion 32 and the pair of front and rear locked holes 31j in the locked portion 31I are engaged with each other. It fits. In this state, the L-shaped locked portion 31I in the cross-sectional view covers the L-shaped locking portion 32 in the cross-sectional view. Since the front and rear protrusions 32b and 32b project upward on the machine body, the locked portion 31I is supported without being disengaged from the locking portion 32. In this state, the bolts Bo and Bo are inserted into the bolt insertion holes 31n and 31n and bolted sideways to the machine body. As a result, the locked portion 31I is bolted to the locking portion 32. Further, in this state, the three outward surface portions 20a, 20a, 20a and the three end portions 31k, 31k, 31k come into contact with each other. Then, bolts are inserted into the pair of upper and lower bolt insertion holes 31m and 31m at the end portion 31k, and bolts are fastened to the bolt fastening holes 20b and 20b at the outward surface portion 20a, respectively. As a result, the upper portion of the support frame 31 is locked to the locking portion 32, and the lower portion of the support frame 31 is fixed in a state of being in contact with the outward surface portion 20a. In this way, the support frame 31 is supported by the threshing device 4 and the grain tank 5 is placed and supported.

[About the detection of the turning position of the grain discharge device]
As shown in FIGS. 8 and 9, a swivel detection unit 40 is provided in the vicinity of the base end portion 18A of the grain discharge device 18, so that the swivel detection unit 40 can detect the swivel position of the grain discharge device 18. It is configured in. In the present embodiment, a limit switch is used as the turning detection unit 40, and an operating rocking body 40A is provided at the tip of the limit switch. The base end portion 18A is provided with a cam portion 18D capable of contacting the free end portion of the operating rocking body 40A. With the rotation of the base end portion 18A, the contact portion of the cam portion 18D with the operating rocking body 40A is displaced, and the swing angle of the operating rocking body 40A changes.

The cam portion 18D has a continuous contact surface 18e over a first contact portion P1 that abuts on the operating rocking body 40A in the retracted state and a second contact portion P2 that abuts on the operating rocking body 40A in the used state. Has. The working rocker 40A abuts on the contact surface 18e over the first contact point P1 and the second contact point P2 due to the displacement of the grain discharging device 18, and the swinging posture of the working rocker 40A is changed. , It changes in conjunction with the change of the contact portion with the contact surface 18e. The linear separation distance between the surface of the base end portion 18A on the side facing the swivel detection unit 40 and the swivel detection unit 40 becomes farther as the base end portion 18A rotates toward the used state side. From this, when the cam portion 18D and the operating rocking body 40A come into contact with each other at the first contact portion P1, the operating rocking body 40A is in the most prone state (falling state). Further, when the cam portion 18D and the operating rocking body 40A come into contact with each other at the second contact portion P2, the operating rocking body 40A is in the most upright state (upright state).

In FIGS. 8 and 9, the separation distance between the surface of the base end portion 18A and the contact surface 18e at the first contact point P1 is shown by the first separation distance h1. When the separation distance between the surface of the base end portion 18A and the contact surface 18e is constant at the first separation distance h1, when the base end portion 18A rotates to the use state side, the free end portion of the operating rocking body 40A And the contact surface 18e are separated from each other, and the swivel detection unit 40 cannot detect the swivel position of the grain discharging device 18. In order to avoid such inconvenience, the separation distance between the surface of the base end portion 18A and the contact surface 18e is closest to the first contact point P1 and is closer to the side located at the second contact point P2. It is configured. The separation distance between the surface of the base end portion 18A at the first contact point P1 and the contact surface 18e is indicated by the first separation distance h1, and the surface and the contact surface 18e of the base end portion 18A at the second contact point P2. The separation distance from and is indicated by the second separation distance h2. The second separation distance h2 is configured to be larger than the first separation distance h1, and the separation distance between the surface of the base end portion 18A and the contact surface 18e is formed larger toward the side where the second separation distance h2 is located. With this configuration, the rocking tip portion of the working rocking body 40A and the contact surface 18e are always in contact with each other, and the working rocking body 40A is in an inverted state at the first contact point P1 and is located at the second contact point P2. The working rocking body 40A stands up toward the side.

As shown in FIG. 10, switching between the used state and the stored state in the grain discharging device 18 is performed by the control unit 41. The operation switch 42 is provided at an arbitrary position in the operation unit 3, and the usage state and the storage state of the grain discharge device 18 are switched based on the artificial operation of the operation switch 42. Signals from the operation switch 42 and the swivel detection unit 40 are input to the control unit 41, and the control unit 41 performs an expansion / contraction operation of the hydraulic cylinder 35 based on these inputs. As a result, the base end portion 18A rotates, and the grain discharging device 18 is switched between the used state and the stored state. The operation switch 42 may be a lever, a touch panel, or the like.

The relationship between the time t and the operating speed V when the grain discharging device 18 is switched from the used state to the stored state is shown in the graph of FIG. When the grain discharging device 18 is switched from the used state to the stored state, the operating rocking body 40A changes from the standing state to the lying state. At this time, the control unit 41 is configured to temporarily stop the rotation of the base end portion 18A at a position where the base end portion 18A stands up by an angle α1 (see FIG. 8) from the collapsed state. In FIG. 11, at the position indicated by the time t2, the operating speed V is decelerated to a zero value or a substantially zero value, and the swing angle of the operating rocking body 40A at this time is upright by an angle α1 rather than the lying posture. It is an angle. That is, when the grain discharging device 18 is switched from the used state to the stored state, when the swing angle of the operating rocking body 40A reaches an angle that is upright by an angle α1 from the lying posture, the control unit 41 of the hydraulic cylinder 35 Stop the contraction operation. Immediately after the contraction operation of the hydraulic cylinder 35 is restarted, the operating rocking body 40A is in the tilted posture, and the operation of the hydraulic cylinder 35 is stopped again. The portion indicated by the time t2 in FIG. 11 is a portion where the hydraulic cylinder 35 operates with the operating rocking body 40A in the lying down posture. The operating speed V of the hydraulic cylinder 35 during the angle α1 is set to be slower than the operating speed V before the operating rocking body 40A reaches the range of the angle α1. As a result, the turning speed of the cylinder portion 18B immediately before the switching from the used state to the stored state is completed becomes low, and the impact due to the contact between the cylinder portion 18B and the receiving portion 33 is alleviated.

[Irradiator near the discharge part]
As shown in FIGS. 12 and 13, an irradiation unit 36 is provided at the swing tip portion of the tubular portion 18B. The irradiation unit 36 is adjacent to the discharge unit 18C, and the irradiation direction of the irradiation unit 36 is directed to the discharge direction of the discharge unit 18C. The mounting stay 36a is welded and fixed to the semi-cylindrical peripheral portion of the discharge portion 18C. The mounting member 36b of the irradiation unit 36 is bolted to the mounting stay 36a. The longitudinal direction of the mounting member 36b is formed in a U shape, and both ends of the mounting member 36b in the longitudinal direction are located on the tip of the mounting member 36b, that is, on the side away from the discharging portion 18C. The irradiation body 36c of the irradiation unit 36 is rotatably supported around the rotation axis Z at both ends of the mounting member 36b in the longitudinal direction. By loosening the bolt fastening between the mounting member 36b and the mounting stay 36a, the mounting member 36b is configured to be rotatable around the bolt fastening portion. Further, the irradiation body 36c is configured so that both ends of the U-shape of the mounting member 36b can be rotated around the shaft core, that is, around the rotation shaft core Z. As a result, the irradiation direction of the irradiation unit 36 can be adjusted.

As shown in FIG. 13, in the present embodiment, when the grain discharge device 18 is in the stored state, the discharge unit 18C is located on the left rear side portion of the machine body, and the discharge direction of the discharge unit 18C is inclined to the left side of the machine body. It is directed downwards. For this reason, the irradiation unit 36 is configured to be able to irradiate the left rear side of the machine body on the left side of the machine body and diagonally downward. As a result, the irradiation unit 36 can irradiate the left side of the machine body, and when the cylinder part 18B is projected to the left side of the machine body according to the switching to the use state, the driver of the operation unit 3 (see FIGS. 1 to 3) and the driver Workers around the machine can easily visually recognize the operation of the grain discharging device 18. When the grain discharge device 18 is in use, the discharge unit 18C projects to the left outside of the machine from the left side of the machine, and the discharge direction of the discharge unit 18C is substantially vertical downward or vertical. It is oriented in the direction of tilting to the outside of the aircraft rather than downward. At this time, since the transport tank of the grain transport vehicle is normally located below the discharge section 18C, the irradiation section 36 irradiates the bottom of the discharge section 18C to irradiate the grain under the discharge section 18C even at night. The discharge status and the storage status of grains in the transport tank can be easily grasped.

[Extension of the cylinder in the grain discharge device]
As shown in FIGS. 14 and 15, the extension portion 45 is configured to be insertable between the cylinder portion 18B and the discharge portion 18C. In this case, the extension portion 45 is inserted between the cylinder portion 18B and the discharge portion 18C by breaking the connection between the cylinder portion 18B and the discharge portion 18C. The grain discharge device 18 is configured so that the distance between the base end portion 18A and the discharge portion 18C can be extended by providing the extension portion 45 at the tip end portion of the cylinder portion 18B of the grain discharge device 18. ..
The extension portion 45 has an extension cylinder 45A and an extension screw 45B. A support bearing 18G is provided at the tip of the tubular portion 18B, and the support bearing 18G rotatably supports the tip of the discharge screw 18F. Of the discharge screw 18F, a connection shaft 18h is formed on the tip side of the support bearing 18G along the rotation axis of the discharge screw 18F, and the connection shaft 18h has a pair of flat surfaces 18i and 18i facing in the radial direction. A connection groove 45c is formed in the rotation shaft core on the side of the extension screw 45B facing the discharge screw 18F. Further, a pair of flat surfaces 18i and 18i and a pair of flat surfaces 45d and 45d corresponding to the pair of flat surfaces 18i and 18i are formed in the connection groove 45c. When the connection shaft 18h is inserted into the connection groove 45c, the pair of flat surfaces 18i and 18i and the pair of flat surfaces 45d and 45d come into contact with each other, and the discharge screw 18F and the extension screw 45B are aligned around one rotation shaft core. It rotates integrally.

In the case where the extension portion 45 is not provided, the cylinder portion 18B and the discharge portion 18C are directly connected by bolting the flange 18p and the flange 18q as described above. When the extension portion 45 is provided as in 15, the cylinder portion 18B and the discharge portion 18C are connected via the extension cylinder 45A. Flange 45p and 45q are formed at both ends of the extension cylinder 45A in the longitudinal direction. The flange 45p is used for coupling to the flange 18p, and the flange 45p and the flange 18p are bolted to each other. Further, the flange 45q is used for coupling to the flange 18q, and the flange 45q and the flange 18q are bolt-connected.

A tip bearing 46 is provided at a position of the rotating shaft core of the discharge screw 18F in the tip of the discharge portion 18C. A support shaft 45e is formed at the tip of the extension screw 45B, and the support shaft 45e is inserted into the tip bearing 46. As a result, the extension screw 45B is supported at two points by the support bearing 18G and the tip bearing 46.

[Battery placement]
As shown in FIGS. 1, 4, and 16, two batteries 50 and 50 are provided on the left side of the airframe, and the batteries 50 supply electric power to various electrical components provided on the airframe. Of the pair of left and right main frames 20, 20, the battery mounting portion 51 is bolted to the main frame 20 on the left side of the machine body. The battery mounting portion 51 is cantilevered and supported by the main frame 20 so as to project to the left side of the main frame 20. The two batteries 50, 50 are mounted on the battery mounting portion 51 in a state of being arranged in the front-rear direction of the machine body. As a result, the width of the entire battery unit is suppressed as compared with the configuration in which the two batteries 50, 50 are arranged side by side in the horizontal direction of the machine body, and the two batteries 50, 50 are located inside the side of the machine body rather than the exterior cover 17. Each of them is housed. The battery 50 is arranged on the left side of the machine with respect to the threshing device 4 and below the grain discharging device 18 in the stored state (see FIG. 4).

The battery 50 can output a DC voltage of 12 volts, and is configured to be able to output a DC voltage of 24 volts by connecting two batteries 50, 50 in series. Further, the transformer device 52 is mounted on the battery mounting unit 51, and the transformer device 52 inputs the DC voltage output from the two batteries 50, 50, steps down the voltage to a predetermined DC voltage, and makes various electrical components. It is configured to supply power. In the present embodiment, the transformer device 52 steps down the DC voltage input from the two batteries 50, 50 to half the DC voltage.

Although not shown in detail, the battery mounting portion 51 has two compartments in which the two batteries 50 and 50 are arranged in the front-rear direction, and the transformer device 52 is arranged on the right side of the machine body with respect to the two batteries 50 and 50. It has one section and three sections. Each section is separated by a partition plate, and the battery mounting portion 51 is configured so that the two batteries 50 and 50 are not displaced due to vibration of the machine body or the like. The transformer device 52 is bolted to the battery mounting portion 51.

An L-shaped locking angle 53 in cross-sectional view is placed along the front-rear direction of the machine on the upper end of each of the two batteries 50, 50 on the left side of the machine. The longitudinal length of the locking angle 53 is formed to be longer than the longitudinal length of the battery 50. With the locking angle 53 mounted on the battery 50, the front end of the locking angle 53 is located in front of the front end of the battery 50 and the rear end of the locking angle 53 is rear of the battery 50. Located behind the edge. That is, both ends of the locking angle 53 in the longitudinal direction are located outside the battery 50, and insertion holes 53a and 53a are formed at these portions. Then, the hanger rods 54 and 54 are inserted into the insertion holes 53a and 53a. A spiral portion that can be engaged with the nut is formed at one end of the hanger rod 54. The other end of the hanger rod 54 is formed in a U shape, and a hook hole 51a that can be engaged with the other end formed in the U shape is formed in the battery mounting portion 51. The other end of the hanger rod 54 is hooked on the hook hole 51a, and the spiral portion of the hanger rod 54 is inserted into the insertion hole 53a with the locking angle 53 mounted on the upper end of the left side of the machine body of the battery 50. The nut is screwed into the spiral part. Such hanger rods 54 are attached to the front and rear of the battery 50, respectively, and when the nuts are retightened at the spiral portions of the two hanger rods 54, the locking angle 53 is the upper end portion on the left side of the machine body of the battery 50. Adhere to. As a result, the battery 50 is fixed to the battery mounting portion 51 via the locking angle 53 and the two hanger rods 54, and the battery 50 is firmly supported by the battery mounting portion 51 even if there is vibration of the machine body or the like. Will be done.

[Another Embodiment]
The present invention is not limited to the configuration exemplified in the above-described embodiment, and the following will exemplify another typical embodiment of the present invention.

(1) In the above-described embodiment, the grain discharging device 18 is provided on the left side of the machine with respect to the threshing device 4, and the fuel tank 30 is provided on the right side of the machine with respect to the threshing device 4. It is not limited to this embodiment. The grain discharge device 18 may be provided on the right side of the machine with respect to the threshing device 4, and the fuel tank 30 may be provided on the left side of the machine with respect to the threshing device 4. Further, the battery 50 may be arranged on the right side of the machine body, or may be arranged on the side where the fuel tank 30 is located with respect to the threshing device 4 in the left-right direction.

(2) In the above-described embodiment, the grain tank 5 has a first overhanging portion 5A extending to the left side of the machine from the threshing device 4, and a second overhanging portion 5B extending to the right side of the machine from the threshing device 4. , But is not limited to this embodiment. The grain tank 5 may be configured to have only one of the first overhanging portion 5A and the second overhanging portion 5B, or the first overhanging portion 5A and the second overhanging portion 5B. It may have a configuration that does not have either. In short, the grain discharging device 18 may be provided on one side of the threshing device 4 in the left-right direction of the machine, and the fuel tank 30 may be provided on the other side of the threshing device 4 in the left-right direction of the machine.

(3) In the above-described embodiment, the engine 6 is arranged behind the grain tank 5, but the engine 6 may be arranged in front of the grain tank 5. At this time, the fuel tank 30 may be configured to be arranged in front of the grain raising device 24. Further, although the fuel tank 30 is arranged below the engine 6 in the side view, the fuel tank 30 does not have to be arranged below the engine 6 in the side view.

(4) In the above-described embodiment, the upper portion of the support frame 31 is locked to the locking portion 32, and the lower portion of the support frame 31 is fixed while being in contact with the outward surface portion 20a. It is not limited to the form. For example, the support frame 31 may be supported and fixed only to the main frame 20, or may be supported and fixed only to the side wall 26.

(5) In the above-described embodiment, a normal type combine is shown as a harvester, but the harvester may be a self-removing combine.

The configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in other embodiments as long as there is no contradiction.
Moreover, the embodiment disclosed in the present specification is an example, and the embodiment of the present invention is not limited to this, and can be appropriately modified without departing from the object of the present invention.

The present invention can be applied not only to a combine harvester but also to a grain-picking type corn harvester and a bean harvester.

4: Threshing device 5: Grain tank 5A: First overhang 5B: Second overhang
5a: First inclined surface (inclined part)
6: Engine 18: Grain discharge device
18A: Base end
20: Main frame 20a: Outer surface part 24: Grain raising device 30: Fuel tank 31: Support frame 32: Locking part 50: Battery

Claims (6)

A threshing device installed in the center of the left and right sides of the machine to thresh the harvested products.
A grain tank provided above the threshing device in a state of being arranged vertically with the threshing device and storing grains obtained by the threshing process, and a grain tank.
With a grain discharge device that is connected to the lower part of the grain tank and can be switched between a storage state in which the grains are stored inside the machine and a use state in which the grains can be discharged from the grain tank overhanging the outside of the machine. ,
A fuel tank, which is provided at a position lower than the grain tank and stores fuel to be supplied to the engine, is provided.
The threshing device is configured such that the upper part of the threshing device is inclined forward and downward, and the grain tank is provided above the front part of the threshing device.
The grain discharging device is provided on one side in the left-right direction of the machine with respect to the threshing device, and the fuel tank is provided on the other side in the left-right direction of the machine with respect to the threshing device .
The lower part of the grain tank on one side in the left-right direction of the machine is provided with an inclined portion formed in an inclined shape toward the lower side toward the center of the machine when viewed from the rear.
The base end portion of the grain discharging device is connected to the inclined portion, and is connected to the inclined portion.
When the grain discharging device is in the stored state, the harvest is stored in a space formed by the inclined portion on the lateral side of the machine in the left-right direction of the grain tank in a state of extending back and forth. Machine. The grain tank has a first overhanging portion that projects from the threshing device to one side in the left-right direction of the machine, and a second overhanging portion that projects from the threshing device to the other side in the left-right direction of the machine. death,
The grain discharging device is located in the lower region of the first overhanging portion in the stored state.
The harvester according to claim 1, wherein the fuel tank is arranged in a lower region of the second overhanging portion in a front view. On the other side of the machine in the left-right direction with respect to the threshing device, a vertical transport device for transporting the grains from the threshing device to the grain tank is provided.
The harvester according to claim 1 or 2, wherein the fuel tank is arranged behind the transfer device. The engine is located behind the grain tank and
The harvester according to any one of claims 1 to 3, wherein the fuel tank is arranged below the engine in a side view. A main frame that extends in the front-rear direction of the machine and supports the threshing device,
A support frame, which is supported by the threshing device and mounts and supports the grain tank, is provided.
The main frame is provided with an outward facing portion that faces laterally outward of the machine body.
A locking portion capable of locking the support frame is provided above the main frame of the threshing device.
The harvest according to any one of claims 1 to 4, wherein the upper portion of the support frame is locked to the locking portion and the lower portion of the support frame is fixed while being in contact with the outward surface portion. Machine. Equipped with a battery to power
The harvester according to any one of claims 1 to 5, wherein the battery is arranged on one side in the left-right direction of the machine with respect to the threshing device and below the grain discharging device in the stored state. ..

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