Harvester

Abstract

A harvester has a storage portion (6) which is supported to a body frame (12) in a state changeable between a closed state (A1) in which the storage portion is located on the body frame (12) and can store a harvested crop and an open state in which the storage portion is extended outward in a lateral direction from the body frame (12). The harvester has a support portion (37) provided to a lower portion (6a, 6b) of the storage portion (6), a guide portion (36) which supports the storage portion (6) by placing the support portion (37) and can guide the support portion (37) from the closed state (A1) to the open state side, and a lifting mechanism (45) which can perform a lifting operation of the support portion (37) from the guide portion (36).

Description

Technical Field

[0001] The present invention relates to the structure of a storage section in a harvester for harvesting farmland crops, which is capable of storing the harvested crops. Background Technology

[0002] As disclosed in Patent Document 1, a conventional combine harvester, exemplified by a harvester, is equipped with a storage section for storing the harvested crop. The storage section is supported on the machine frame in a state-changing manner around a vertical axis at its rear, and can be operated between a closed state on the machine frame and an open state extending laterally outward from the machine frame. By operating the storage section to the open state, the operator can perform maintenance work near the storage section.

[0003] In Patent Document 1, a support portion is provided at the lower part of the front of the storage portion, and a guide portion is provided on the body frame. By placing the support portion on the guide portion, the front of the storage portion is supported by the guide portion, and the support portion is guided from the closed state to the open state side.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2013-21962 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] Since the storage section becomes heavier when crops are stored there, it is preferable that the storage section be empty when it is operated to the open state.

[0009] In recent years, there has been an increasing demand for keeping storage facilities open even when crops are stored in them.

[0010] The object of the present invention is to provide a structure in a harvester that reduces the labor required for the operator to operate the storage section to the open state, even when crops are stored in the storage section.

[0011] means for solving problems

[0012] The harvester of the present invention includes: a body frame; a storage section supported on the body frame in a state-changing manner about a first axis in the vertical direction of the body frame, between a closed state and an open state, wherein the closed state is a state in which the storage section is located on the body frame and is capable of storing harvested crops, and the open state is a state in which the storage section extends laterally outward from the body frame; a support section disposed at the lower part of the storage section; and a guide section that supports the storage section by placing the support section thereon and is capable of guiding the support section from the closed state to the open state side, the harvester having a lifting mechanism capable of lifting the support section from the guide section.

[0013] When the storage section is supported by the support section on the guide section and the storage section is operated to the closed state, if crops are stored in the storage section, the load pressure on the support section increases, and therefore the labor required for the operator to operate the storage section to the open state increases.

[0014] According to the present invention, by using the lifting mechanism to lift the support, the load pressure on the support is reduced. Therefore, even when crops are stored in the storage section, the labor required for the operator to operate the storage section to the open state is reduced, thus improving the operability of the storage section to the open state.

[0015] In this invention, preferably, the guide portion is provided with an entry portion, and when the storage portion is operated to the closed state, the support portion descends and enters the entry portion, and the support portion is lifted from the entry portion by means of the lifting mechanism.

[0016] According to the present invention, when the storage section is operated to the closed state, the support section descends and enters the entry section of the guide section. Therefore, the stability of the storage section in the closed state is improved by the mounting pressure of the support section and the entry of the support section into the entry section of the guide section.

[0017] According to the present invention, by using a lifting mechanism, the support part is lifted from the entry part of the guide part, so that the support part can be withdrawn from the entry part of the guide part. Therefore, not only is the load pressure on the support part reduced, but the entry of the support part into the entry part of the guide part is also released, thereby reducing the labor required for the operator to operate the storage part to the open state.

[0018] In this invention, it is preferred that the support portion is a support roller capable of rolling along the guide portion.

[0019] According to the present invention, the support part is a support roller, so that when the storage part is operated to the open state, the support roller rolls on the guide part, thereby reducing the labor of the operator in operating the storage part to the open state.

[0020] In this case, when the support roller is lifted using the lifting mechanism, the load pressure on the support roller decreases, thus reducing the labor required for the operator to operate the storage section to the open position.

[0021] In this invention, preferably, the lifting mechanism includes: a lifting arm capable of swinging to one side and to the other about a second axis in a radial direction relative to the first axis, relative to a vertical line passing through the second axis, and extending downward from the second axis; a lifting roller disposed at the lower part of the lifting arm and capable of rolling along the guide portion; an operating arm disposed on the lifting arm, which is manually operated to lift the support portion via the lifting arm and the lifting roller by operating the lifting arm to the other side relative to the vertical line; and a stop portion that prevents the lifting arm from swinging to the other side when the support portion is lifted.

[0022] According to the present invention, in the lifting mechanism, the operator operates the operating arm to operate the lifting arm to the other side, thereby causing the lifting roller to roll in the guide section and lifting the support section via the lifting arm and the lifting roller.

[0023] When the lifting arm and lifting roller cross the vertical line passing through the second axis to the other side, the lifting arm wants to swing further to the other side due to the weight of the storage part. However, the swing of the lifting arm to the other side is stopped by the stop part. Therefore, the support part remains in the state of being lifted.

[0024] Thus, when the storage section is operated to the open state, the operator reduces the labor required to operate the storage section to the open state by lifting the roller and rolling it on the guide section.

[0025] When the support is placed on the guide due to displacement of the various parts of the storage section, the storage section is stably supported on the guide when it is operated to the open state by placing the support and the lifting roller on the guide. By maintaining the state in which the support is lifted by the lifting mechanism, the pressure on the support is reduced, thereby reducing the labor required for the operator to operate the storage section to the open state.

[0026] In this invention, preferably, the harvester has an extension arm that can be attached to and detached from the operating arm, thereby extending the length of the operating arm.

[0027] According to the present invention, when the operator operates the operating arm, an extension arm can be installed on the operating arm to extend the length of the operating arm. Thus, even when crops are stored in the storage section, the operator can easily operate the lifting arm to one side and the other side by operating the operating arm (extension arm).

[0028] In this invention, preferably, a support frame is provided at the lower part of the storage section in a direction orthogonal to the radial direction relative to the first axis. In a top view, the support section is disposed on one side of the support frame, close to the first axis and away from the first axis, and the lifting mechanism is disposed on the other side of the support frame, close to the first axis and away from the first axis.

[0029] According to the present invention, when the support and the lifting mechanism are provided in the storage part, the support and the lifting mechanism sandwich the support frame in the middle and are arranged on opposite sides of each other. The support and the lifting mechanism are arranged with less interference between them, which is advantageous in terms of simplification of structure.

[0030] In this invention, preferably, a crop discharge mechanism capable of discharging crops from the storage unit is disposed at the bottom of the storage unit along a radial direction relative to the first axis. When viewed from the radial direction relative to the first axis, the support portion is disposed on one side of the crop discharge mechanism in a transverse direction, and the lifting mechanism is disposed on the other side of the crop discharge mechanism in a transverse direction.

[0031] In harvesters, the crop discharge mechanism, which discharges crops from the storage compartment, is sometimes located at the bottom of the storage compartment.

[0032] According to the present invention, the support and the lifting mechanism are arranged on one side and the other side of the lateral direction, respectively, with the crop discharge mechanism sandwiched between them. The support and the lifting mechanism are arranged with minimal interference between them, which is advantageous in terms of structural simplification.

[0033] In this invention, it is preferred that, when viewed from a radial direction relative to the first axis, the lower part of the storage section is formed in a downwardly tapering shape that narrows in lateral width toward the crop discharge mechanism, and the lifting mechanism is disposed in the lower region relative to the lower part of the storage section.

[0034] When a crop discharge mechanism capable of discharging crops from the storage unit is located at the bottom of the storage unit, the lower part of the storage unit is sometimes formed in a downward-sloping shape that narrows in lateral width towards the crop discharge mechanism, and sometimes a space is created in the lower area relative to the lower part of the storage unit.

[0035] According to the present invention, since the lifting mechanism is located in the lower region relative to the lower part of the storage section, the region located in the lower region relative to the lower part of the storage section can be effectively utilized.

[0036] In this invention, preferably, when viewed from the radial direction relative to the first axis, the support portion is disposed on the inner side of the body frame relative to the crop discharge mechanism, and the lifting mechanism is disposed on the lateral outer side of the body frame relative to the crop discharge mechanism.

[0037] According to the present invention, since the lifting mechanism is located on the lateral outer side of the machine frame relative to the crop discharge mechanism, it is a structure that is close to the lifting mechanism for the operator standing on the ground, and the operator standing on the ground can easily operate the lifting mechanism, thus improving the operability of the lifting mechanism.

[0038] In this invention, preferably, an intermediate state is provided at the end of the machine frame between the closed state and the open state. The guide portion is capable of guiding the support portion between the closed state and the intermediate state. The harvester has a stopping mechanism that can be operated to a blocking position and a permissible position. The blocking position is the position where the storage portion stops in the intermediate state when it is operated from the closed state to the open state. The permissible position is the position where the storage portion in the intermediate state is allowed to move towards the open state and towards the closed state.

[0039] According to the present invention, when the support is lifted by the lifting mechanism and then placed on the guide, when the storage part (support) is operated from the closed state to the open state, the storage part (support) is supported by the guide between the closed state and the intermediate state. When it moves from the intermediate state to the open state, the support of the guide on the storage part (support) disappears.

[0040] According to the present invention, when the storage section (support section) is operated from the closed state to the open state, if the storage section (support section) reaches the intermediate state, the storage section (support section) stops in the intermediate state by means of the stop mechanism at the stop position.

[0041] As a result, maintenance work that can be performed even when the storage compartment is not in the open position becomes easier for operators, improving workability.

[0042] According to the present invention, when the storage section (support section) is operated from the intermediate state to the open state, the storage section (support section) can pass through the intermediate state by the operator operating the stop mechanism to the permissible position. Therefore, the storage section (support section) can be operated from the intermediate state to the open state side.

[0043] Therefore, the operator's action of stopping the mechanism operation to the permissible position will draw the operator's attention to the situation where the support of the guide part to the storage part (support part) has disappeared.

[0044] In this invention, preferably, the harvester has a force-applying mechanism that applies force to the stop mechanism toward the blocking position. When the storage section is operated from the open state to the intermediate state, the storage section contacts the stop mechanism at the blocking position, thereby the stop mechanism is operated to the permissible position against the force-applying mechanism. When the storage section passes through the intermediate state, the stop mechanism is operated to the blocking position by the force-applying mechanism.

[0045] According to the present invention, when the storage section (support section) is operated from the open state to the closed state, if the storage section (support section) reaches the intermediate state, the storage section contacts the stop mechanism of the stop position, and the stop mechanism is operated to the allowable position against the force application mechanism. Therefore, the storage section (support section) can pass through the intermediate state.

[0046] Therefore, when the storage section (support section) is operated from the open state to the closed state, the operator does not need to operate the stop mechanism from the blocking position to the permissible position, thus improving workability.

[0047] If the storage section (support section) passes through the intermediate state, the stop mechanism is automatically operated to the blocking position by the force application mechanism, so the operator does not need to operate the stop mechanism from the permissible position to the blocking position, thus improving workability.

[0048] In this invention, preferably, the harvester has an intermediate state holding mechanism, which is capable of holding and releasing the storage section in the intermediate state.

[0049] According to the present invention, when the storage section (support section) is operated to the intermediate state, the storage section is held in the intermediate state by means of the intermediate state holding mechanism, so that maintenance operations that can be performed even if the storage section is not operated to the open state become easier for the operator and improve workability. Attached Figure Description

[0050] Figure 1 This is a right-side view of a combine harvester.

[0051] Figure 2 This is a top view of a combine harvester.

[0052] Figure 3 This is a right-side view near the front of the engine and grain bin.

[0053] Figure 4 This is a top view of the area near the front of the driver's compartment and grain bin.

[0054] Figure 5 This is a cross-sectional top view of the area near the engine hood.

[0055] Figure 6This is a front view of the grain bin.

[0056] Figure 7 It is a cross-sectional top view of the area near the guide section, support rollers, lifting mechanism, stopping mechanism, and intermediate state holding mechanism.

[0057] Figure 8 It is an exploded perspective view of the area around the guide section, support roller, lifting mechanism, stopping mechanism, and intermediate state holding mechanism.

[0058] Figure 9 This is a longitudinal rear view of the front part of the grain bin in its closed state.

[0059] Figure 10 It means from Figure 9 The image shown is a longitudinal rear view near the front of the grain bin, showing the state in which the support rollers have been lifted using the lifting mechanism.

[0060] Figure 11 It means from Figure 10 The image shown is a longitudinal rear view of the front of the grain bin near the intermediate state.

[0061] Figure 12 It means from Figure 11 The image shown is a longitudinal rear view of the front of the grain bin when it is operated to the open position.

[0062] Figure 13 This is a top view of the aircraft's frame. Detailed Implementation

[0063] Figures 1 to 13 This refers to a standard combine harvester as an example of a harvester. F indicates forward direction, B indicates backward direction, U indicates up direction, D indicates down direction, R indicates right direction, and L indicates left direction.

[0064] (The overall structure of a combine harvester)

[0065] like Figure 1 and Figure 2 As shown, the machine body 1 is supported by a tracked running device 2. A harvesting section 3 and a driving section 4 are provided at the front of the machine body 1. A threshing device 5 is provided on the left side of the machine body 1, and a grain box 6, which serves as a storage section, is provided on the right side of the machine body 1. A crop discharge device 7 is connected to the lower rear part of the grain box 6.

[0066] The conveying device 8 is supported at the front of the threshing device 5 and extends forward from the threshing device 5, capable of swinging up and down around an axis in the left-right direction. The harvesting section 3 for harvesting farmland crops is connected to the front of the conveying device 8 and is located at the front of the machine body 1. A lifting cylinder (not shown) is connected between the machine body 1 and the conveying device 8, and the lifting cylinder is used to lift the harvesting section 3 and the conveying device 8.

[0067] According to the above structure, as the machine body 1 moves forward, the crops in the farmland are guided into the harvesting section 3 for harvesting. The crops are then transported from the harvesting section 3 to the threshing unit 5 via the transport device 8. The crops are threshed by the threshing unit 5, and the harvested crops are stored in the grain bin 6. When the grain bin 6 is full, the crops in the grain bin 6 are discharged through the discharge device 7.

[0068] (Regarding the structure that supports the body)

[0069] like Figure 13 As shown, a plurality of square tube components are connected to form a frame, which constitutes the skeleton of the body 1. When performing maintenance work on the running gear 2, the body frame 12 is lifted up.

[0070] The lifting device working parts D1, D2, and D3 that abut against the lifting device (not shown) are located in the left and right central parts of the front part of the machine frame 12 (between the front part of the driving unit 4 and the threshing device 5 when viewed from above), the right part of the rear part of the machine frame 12 (the part that is further back than the rear end of the right-hand travel device 2), and the left part of the rear part of the machine frame 12.

[0071] The left rear portion of the fuselage frame 12 is positioned forward of the rear end of the left-hand travel device 2; therefore, the lifting frame 64 is movably mounted on the left rear portion of the fuselage frame 12. Figure 13 As shown by the double-dotted line, the lifting frame 64 is moved until it is located behind the rear end of the left-hand travel device 2, and the lifting frame 64 is used as the lifting device action part D3.

[0072] (Structure of a grain bin)

[0073] like Figure 1 , 2 As shown in Figure 3, the grain bin 6 is formed into a box shape by connecting a plurality of plates. The crop recovered by the threshing device 5 is put into the grain bin 6 from the upper part of the left transverse surface and stored in the grain bin 6.

[0074] like Figure 3 and Figure 6As shown, the bottom screw 9 (equivalent to a crop discharge device) is positioned at the bottom of the grain bin 6 along the front-to-back direction and along the radius relative to the axis P1 (equivalent to the first axis) described later (structure of the discharge device). The vibrating plate 10 is positioned at the bottom of the grain bin 6 along the front-to-back direction (radial relative to the axis P1 (first axis)) and above the bottom screw 9.

[0075] Viewed from the front-to-back direction (radial direction relative to the axis P1 (first axis), the lower parts 6a and 6b of the grain bin 6 are formed in a downward-sloping shape, narrowing in lateral width towards the bottom screw 9. A lower cover 11 made of synthetic resin is detachably installed on the grain bin 6, and the lower part 6a of the grain bin 6 is covered by the lower cover 11.

[0076] The flat support frame 14 is connected to the front of the lower part 6a, 6b of the grain bin 6 in a left-right direction (orthogonal to the radial direction relative to the axis P1 (first axis)). The gearbox 15 is connected to the support frame 14, and the output shaft (not shown) of the gearbox 15 is connected to the front of the bottom screw 9.

[0077] The arm 10a connected to the vibrating plate 10 is positioned at the front relative to the support frame 14, and the arm 10a of the vibrating plate 10 is connected to an eccentric cam (not shown) mounted on the output shaft of the gearbox 15.

[0078] (Structure of the discharge device)

[0079] like Figure 1 and Figure 2 As shown, the discharge device 7 is provided with a longitudinal conveying section 7a containing a conveying screw (not shown) and a transverse conveying section 7b containing a conveying screw (not shown), and a discharge port 7c is provided at the end of the transverse conveying section 7b.

[0080] The longitudinal transport section 7a of the discharge device 7 is rotatably supported on the body frame 12 about the right side of the rear part of the body frame 12 along the vertical axis P1. The transverse transport section 7b of the discharge device 7 is supported on the upper part of the longitudinal transport section 7a of the discharge device 7 by swinging up and down.

[0081] By rotating the longitudinal transport section 7a of the discharge device 7 around the axis P1, the discharge device 7 (longitudinal transport section 7a and transverse transport section 7b) is rotated, thereby changing the position of the discharge outlet 7c of the discharge device 7 laterally. By swinging the transverse transport section 7b of the discharge device 7 up and down, the position of the discharge outlet 7c of the discharge device 7 is changed in the vertical direction.

[0082] The lower part of the conveying screw of the longitudinal conveying section 7a of the discharge device 7 is connected to the rear part of the bottom screw 9 via a bevel gear mechanism (not shown). The upper part of the conveying screw of the longitudinal conveying section 7a of the discharge device 7 is connected to the conveying screw of the transverse conveying section 7b of the discharge device 7 via a bevel gear mechanism (not shown).

[0083] (The structure driving the bottom screw, vibrating plate, and discharge device of the grain bin)

[0084] like Figures 3-6 As shown, the engine 13 is located on the right side of the front part of the body frame 12, and the output pulley 13a is located on the right side of the engine 13. An input pulley 15a is located on the right side of the gearbox 15, and a transmission belt 21 is installed between the output pulley 13a of the engine 13 and the input pulley 15a of the gearbox 15.

[0085] A discharge clutch 22 is provided for the drive belt 21. The discharge clutch 22 is provided with an arm 22a that is supported on the rear of the engine hood 16a and can swing up and down around the axis P3 in the left and right direction, and a pulley 22b is provided at the end of the arm 22a.

[0086] By operating the arm 22a of the disengagement clutch 22 upwards, the drive belt 21 becomes taut, and the power from the output pulley 13a of the engine 13 is transmitted to the input pulley 15a of the gearbox 15 via the drive belt 21 (transmission state of the disengagement clutch 22). By operating the arm 22a of the disengagement clutch 22 downwards, the drive belt 21 becomes slack, and the power transmission to the input pulley 15a of the gearbox 15 is cut off (disengagement state of the disengagement clutch 22).

[0087] like Figures 1-4 As shown, the driver's seat 4 is provided with an engine hood 16 that houses the engine 13, a front control unit 17 located in front of the engine hood 16, a horizontal control unit 18 located on the left side of the engine hood 16 and the left side of the front control unit 17, a driver's seat 19 located on the engine hood 16, and a canopy 20 covering them.

[0088] like Figure 3 and Figure 4 As shown, in the driver's unit 4, an operating box 23 is located diagonally rear to the left of the driver's seat 19 and behind the horizontal control unit 18. A discharge clutch lever 24 and a beverage holder 25 are located in the operating box 23. A wire 26 connects the discharge clutch lever 24 and the arm 22a of the discharge clutch 22. The operator of the driver's seat 19 operates the discharge clutch lever 24, swinging the arm 22a of the discharge clutch 22 up and down to operate the discharge clutch 22 to switch it between the transmission and disengagement states.

[0089] When the discharge clutch 22 is operated to the transmission state, the power transmitted to the input pulley 15a of the gearbox 15 is transmitted via the bevel gear mechanism (not shown) inside the gearbox 15 and the output shaft to the bottom screw 9, the conveying screw of the longitudinal conveying section 7a of the discharge device 7, and the conveying screw of the transverse conveying section 7b, thereby driving them to rotate. The vibrating plate 10 is driven to oscillate back and forth by the eccentric cam on the output shaft of the gearbox 15 and the arm 10a of the vibrating plate 10.

[0090] The vibrating plate 10 is used to suppress the bridging phenomenon of crops, and the bottom screw 9 is used to discharge the crops from the grain box 6 to the discharge device 7, which is transported along the longitudinal transport section 7a and the transverse transport section 7b of the discharge device 7, and discharged from the discharge port 7c of the discharge device 7.

[0091] (Summary of grain bin status changes)

[0092] like Figure 1 and Figure 2 As shown, the rear of the grain bin 6 is supported on the machine frame 12 by the longitudinal transport section 7a of the discharge device 7, which can swing around the axis P1 (and change its state).

[0093] Figure 1 and Figure 2 The solid line indicates the closed state A1, where the grain bin 6 is located on the frame 12 and is capable of storing harvested crops. Figure 2 The state shown by the double-dotted line is the open state A3, where the grain bin 6 is operated laterally outward to the right around the axis P1 and extends laterally outward from the body frame 12 to the right.

[0094] When the operator moves the grain bin 6 from the closed state A1 to the open state A3, the operator needs to stop the engine 13, operate the discharge clutch 22 to the disengaged state, and remove the drive belt 21 from the input pulley 15a of the gearbox 15.

[0095] (Structure of the engine hood)

[0096] like Figure 3 , 4 As shown in Figure 5, an engine hood cover 27 is provided that covers the right side of the engine hood 16. A radiator 28, a cooling fan 29, and a fan cover 30 are provided on the right side of the engine hood 16, and their right side is covered by the engine hood cover 27.

[0097] The engine hood 27 is box-shaped and formed from a metal plate component, and is supported by a frame 16b on the right front of the engine hood 16, which is able to swing about an axis P4 in the vertical direction. A ventilated dustproof component 27b is provided on the transverse surface of the engine hood 27, a rubber sealing component 27c is provided on the outer periphery of the engine hood 27, and an auxiliary handle 27d for getting in and out is provided on the front of the engine hood 27.

[0098] On the rear right frame 16c and upper right frame 16d of the engine hood 16, buckle-shaped fixing members 31 and 32 are provided to secure and release the engine hood 27 in the closed position. When the engine hood 27 is operated to the closed position, the rear end 27a of the engine hood 27 extends further rearward than the frame 16c of the engine hood 16, and the opening 27e for the operator to operate the fixing member 31 is provided at the rear of the lateral surface of the engine hood 27.

[0099] A rod-shaped limiting member 33 is oscillating about an axis P5 in the vertical direction and is disposed at the lower part of the frame 16b of the engine hood 16. A flat limiting plate 34 is connected to the front part of the lower part of the engine hood cover 27, and a limiting hole 34a is provided on the limiting plate 34, into which the end of the limiting member 33 is inserted.

[0100] On the right side of the fuselage frame 12, at the location where the engine hood 16 is installed, a guide plate 35 is connected in a manner that protrudes laterally outward from the fuselage frame 12 to the right. The guide plate 35 has a horizontal portion 35a and an inclined portion 35b that slopes downward as it moves away from the engine hood 16.

[0101] like Figure 1 , 3 As shown in Figure 4, with the engine cover 27 operated to the closed position, the rear end 27a of the engine cover 27 enters the lower part of the front of the grain bin 6 in a side view. The rear end 27a of the engine cover 27 and the front end of the lower cover 11 overlap with the input pulley 15a of the gearbox 15 in a side view.

[0102] (Previous technologies, challenges, and effects related to engine hoods)

[0103] The rear end 27a of the engine cover 27 and the front end of the lower cover 11 are located near the frame 16c of the engine cover 16.

[0104] With the transmission belt 21 removed from the input pulley 15a of the gearbox 15, there is room for improvement in workability.

[0105] like Figure 1 , 3As shown in Figure 4, the rear end 27a of the engine cover 27 extends further rearward than the frame 16c of the right rear part of the engine cover 16. The rear end 27a of the engine cover 27 and the front end of the lower cover 11 overlap with the input pulley 15a of the gearbox 15 in a side view.

[0106] The operator can remove the drive belt 21 from the input pulley 15a of the gearbox 15 by operating the engine cover 27 to the open position. Similarly, the operator can remove the lower cover 11 to remove the drive belt 21 from the input pulley 15a of the gearbox 15.

[0107] Therefore, even if the operator operates the engine cover 27 to the open position without removing the lower cover 11, or even if the lower cover 11 is removed while the engine cover 27 is in the closed position, the operator can remove the drive belt 21 from the input pulley 15a of the gearbox 15, thus improving workability.

[0108] like Figure 3 , 4 As shown, when the engine cover 27 is operated to the closed position, the upper and lower parts of the engine cover 27 are fixed by the fixing members 31 and 32, so that the engine cover 27 can be stably fixed in the closed position.

[0109] Even though the rear end 27a of the engine cover 27 extends further rearward than the frame 16c of the right rear part of the engine cover 16, the operator can easily reach in through the opening 27e of the engine cover 27 to operate the fixing component 31.

[0110] When the engine hood 27 is operated from the closed position to the open position, the limiting member 33 rotates around the axis P5. Figure 4 It swings counterclockwise, and the end of the limiting member 33 moves along the limiting hole 34a of the limiting plate 34.

[0111] like Figure 5 As shown, when the engine hood 27 reaches the open position, the end of the limiting member 33 enters the bend at the end of the limiting hole 34a of the limiting plate 34, and the engine hood 27 is held in the open position.

[0112] As from Figures 5 to 4 As shown, when the engine cover 27 is operated from the open position to the closed position, even if the engine cover 27 is slightly lowered from the position of the axis P4, the lower part of the engine cover 27 will contact the inclined portion 35b of the guide plate 35 and be lifted up, and slide to the horizontal portion 35a of the guide plate 35 and be guided to the closed position.

[0113] (Structure of the guide section and support rollers related to changes in the state of the grain bin)

[0114] like Figures 6-9 As shown, the flat guide section 36 is connected to the right side of the machine frame 12 in a manner located below the support frame 14 of the grain bin 6 when it is operated to the closed state A1 (see reference). Figure 13 ).

[0115] A square opening 36a (equivalent to an entry section) is provided on the inner side of the body frame 12 in the guide section 36, and an opening 36b is provided on the right lateral outer side of the body frame 12 in the guide section 36. An inclined section 36c is provided at the end of the right lateral outer side of the body frame 12 in the guide section 36, which slopes downwards and decreases as it moves away from the body frame 12.

[0116] In the support frame 14, the support roller 37 (equivalent to the support part) is rotatably supported on the part that is in front of the support frame 14 when viewed from above (equivalent to the side away from the first axis) and on the part that is inside the body frame 12 relative to the bottom screw 9 when viewed from the front-rear direction (equivalent to the radial direction relative to the first axis) (equivalent to the lateral side).

[0117] The support roller 37 is provided on the lower part 6a, 6b of the grain bin 6 via the support frame 14. It is located on the lower part 6b of the inner side of the machine frame 12 in the grain bin 6 and can roll along the guide part 36.

[0118] (Structure related to the retention of grain bins in a closed state)

[0119] like Figures 6-9 As shown, in the support frame 14, a channel-shaped bracket 38 is connected to the portion of the support frame 14 that is on the front side when viewed from above, and on the lateral outer side of the bottom screw 9 relative to the right side of the body frame 12 when viewed from the front-rear direction.

[0120] The engaging member 39, formed by bending a round bar into an angle, is rotatably and vertically mounted on the bracket 38 and is provided with a spring 40 that applies downward force to the engaging member 39.

[0121] like Figure 3 and Figure 6 As shown, a hook-shaped engaging member 41 is provided on the upper left front part of the grain bin 6. The engaging member 41 can engage and disengage with the fixing part 5a provided on the threshing device 5. In the support frame 14, an operating lever 42 is provided on the part of the support frame 14 that is forward of the axis P1 when viewed from above, and on the lateral outer side of the part of the bottom screw 9 that is on the right side of the machine frame 12 when viewed from the front-rear direction.

[0122] A connecting rod 43 is connected between the engaging member 41 and the operating rod 42. A spring 44 is installed on the engaging member 41 and the operating rod 42 to apply force to the engaging member 41 and engage with the fixing part 5a of the threshing device 5.

[0123] (Structure of the lifting mechanism related to changes in the state of the grain bin)

[0124] like Figures 6-9 As shown, in the support frame 14, a lifting mechanism 45 is provided on the rear side (equivalent to the side close to the first axis) of the support frame 14 when viewed from above, and on the lateral outer side (equivalent to the other side) of the bottom screw 9 on the right side of the body frame 12 when viewed from the front-rear direction (equivalent to the radial direction relative to the first axis).

[0125] The lifting mechanism 45 is provided with a lifting arm 46, a lifting roller 47, an operating arm 48, and a stop 49. The lifting mechanism 45 is located in the lower region relative to the lower part 6a of the grain bin 6, and is located on the lateral outer side of the right side of the machine frame 12 relative to the bottom screw 9.

[0126] The lifting arm 46 is formed into a box shape by connecting a plurality of plates and is supported on the support frame 14 by swinging about an axis P2 (equivalent to a second axis) in the front-back direction (equivalent to the radial direction relative to the first axis). The lifting arm 46 extends downward from the axis P2 and can swing within a range on the outer side (equivalent to one side) of the right side of the body frame 12 and the inner side (equivalent to the other side) of the body frame 12 relative to the vertical line B1 passing through the axis P2.

[0127] The lifting roller 47 is rotatably disposed on the lower part of the lifting arm 46 and placed on the guide portion 36, and can roll along the guide portion 36. The stop portion 49 is formed in the shape of a rod and is connected to the support frame 14 in such a way that it is located inside the body frame 12 relative to the lifting arm 46.

[0128] The operating arm 48 is disposed on the lifting arm 46 and extends laterally outward to the right side of the machine frame 12. The lifting arm 46 is swung relative to the vertical line B1 inward and laterally outward to the right side of the machine frame 12 by the operator gripping the operating arm 48 and operating it upward and downward. The length of the operating arm 48 is set such that it does not contact the lower cover 11 even when the lower cover 11 is installed.

[0129] Figure 6 and Figure 9 The state shown is that the grain bin 6 is operated to the closed state A1, the operating arm 48 is operated upward, the lifting arm 46 is operated to the lateral outer side of the right side of the machine frame 12 relative to the vertical line B1, and the support roller 37 is lowered and enters the opening 36a of the guide section 36.

[0130] The operator moves the lifting arm 48 downwards, causing the lifting arm 46 to move inwards relative to the vertical line B1 towards the inside of the machine frame 12. This, via the lifting arm 46 and the lifting roller 47, raises the front of the grain bin 6 relative to the guide section 36, and the support roller 37 is raised from the opening 36a of the guide section 36 (see reference). Figure 10 ).

[0131] As described above, if the lifting arm 46 is operated relative to the vertical line B1 toward the inside of the machine frame 12, and the lifting arm 46 and the lifting roller 47 cross the vertical line B1 toward the inside of the machine frame 12 to lift the front of the grain box 6 and the support roller 37, then due to the weight of the grain box 6, the lifting arm 46 will swing further toward the inside of the machine frame 12 (the other side).

[0132] In this case, the swing of the lifting arm 46 toward the inside of the machine frame 12 is stopped by the stop part 49, so that the state in which the front of the grain box 6 and the support roller 37 are lifted can be maintained.

[0133] (Structure of the extension arm related to changes in the state of the grain bin)

[0134] like Figure 1 , 6 As shown in Figure 9, a cylindrical extension arm 50 is installed on the lower part 6a of the grain bin 6. (As shown in Figure 9) Figure 10 As shown, the operator can extend the length of the operating arm 48 by removing the extension arm 50 and inserting it into the operating arm 48.

[0135] Thus, by operating the control arm 48 (extension arm 50), the operator can easily operate and lift the arm 46 to the right lateral outer and inner sides of the machine frame 12.

[0136] (Structure of the stopping mechanism related to changes in the state of the grain bin)

[0137] like Figure 6 , 7 As shown in Figure 8, in the frame 12, a block-shaped support 51 is connected to the front side of the inclined portion 36c relative to the guide portion 36, and a channel-shaped bracket 52 is connected to the support 51. An opening 52a is provided on the bracket 52.

[0138] A stop mechanism 53 is provided on the support part 51. The stop mechanism 53 is provided with a blocking member 54, a fulcrum shaft 55, an arm 56 and a spring 57 (equivalent to a force-applying mechanism). The fulcrum shaft 55 is rotatably supported on the support part 51 about an axis P6 in the front-rear direction. The blocking member 54 is connected to the rear end of the fulcrum shaft 55, and the arm 56 is connected to the front end of the fulcrum shaft 55.

[0139] The blocking member 54 is provided with a blocking portion 54a at one end and a receiving portion 54b at the other end, and the blocking member 54 can be in the blocking position C1 (refer to...). Figure 8 and Figure 9 ) and permissible location C2 (refer to Figure 12 The components 54 and 54b oscillate around axis P6. In the stopped position C1, the stopping part 54a of the stopping member 54 protrudes upwards from the support part 51, and the bearing part 54b of the stopping member 54 abuts against the upper surface of the body frame 12. In the permissible position C2, the stopping part 54a and the bearing part 54b of the stopping member 54 are at the same height as the support part 51.

[0140] Spring 57 is mounted on pivot shaft 55, and spring 57 applies force to stopping member 54 (stopping mechanism 53) to the stopping position C1. The operator can operate by gripping arm 56, which can overcome spring 57 and operate stopping member 54 (stopping mechanism 53) to the permissible position C2.

[0141] (Structure of the intermediate state holding mechanism related to changes in the state of the grain bin)

[0142] like Figure 6 , 7 As shown in Figure 8, in the support frame 14, an intermediate state holding mechanism 58 is provided in the part that is in front of the support frame 14 when viewed from above (equivalent to the side away from the first axis) and in the part that is in the inner side of the body frame 12 relative to the bottom screw 9 when viewed from the front-rear direction (equivalent to the radial direction relative to the first axis) (equivalent to the lateral side).

[0143] The intermediate state holding mechanism 58 is provided with a support member 59, a locking member 60 and a spring 61.

[0144] The support member 59 is formed by bending a sheet metal into a crank shape and is connected to the support frame 14. A bearing portion 59a is provided at the lower part of the support member 59, and a support portion 59b is provided at the upper part of the support member 59.

[0145] The engaging member 60 is formed by bending a round bar into an angle and is rotatably and vertically mounted on the supporting member 59. The engaging member 60 is subjected to downward force by means of a spring 61.

[0146] (The operation of opening the grain bin from the closed state) - 1

[0147] Figure 6 , 7 The state shown in 9 is the state where the grain bin 6 is operated to the closed state A1, where the support roller 37 descends and enters the opening 36a of the guide section 36, and the front part of the grain bin 6 is supported by the support roller 37 on the guide section 36.

[0148] The engaging member 39 is lowered by the spring 40 and enters the opening 36b of the guide portion 36. The engaging member 41 (see reference) Figure 6 The grain bin 6 is kept in a closed state A1 by engaging the spring 44 with the fixing part 5a of the threshing device 5.

[0149] In the lifting mechanism 45, the operating arm 48 is operated upward, and the lifting arm 46 (the mounting point where the lifting roller 47 contacts the guide 36) is operated laterally outward to the right of the body frame 12 relative to the vertical line B1.

[0150] In the intermediate state holding mechanism 58, the engaging member 60 is lifted and placed on the support portion 59b of the supporting member 59, and the engaging member 60 is held in place by the lifted operation. In the stopping mechanism 53, the stopping member 54 is operated to the stopping position C1 by the action of the spring 57.

[0151] The operator standing on the ground stops the engine 13, operates the discharge clutch 22 to the disengaged state, removes the lower cover 11, or operates the engine cover 27 to the open position, and removes the drive belt 21 from the input pulley 15a of the gearbox 15.

[0152] like Figure 10 As shown, the operator removes the lower cover 11, removes the extension arm 50 from the lower part 6a of the grain bin 6 and installs it on the operating arm 48, operates the operating arm 48 (extension arm 50) downward, and operates the lifting arm 46 (the mounting point where the lifting roller 47 contacts the guide 36) relative to the vertical line B1 towards the inside of the machine frame 12.

[0153] By operating the lifting arm 46 (the mounting point where the lifting roller 47 contacts the guide 36) towards the inside of the machine frame 12 relative to the vertical line B1, the front part of the grain box 6 is lifted relative to the guide 36 via the lifting arm 46 and the lifting roller 47, and the support roller 37 is lifted from the opening 36a of the guide 36 by the lifting mechanism 45.

[0154] The swing of the lifting arm 46 toward the inside of the machine frame 12 caused by the weight of the grain bin 6 is stopped by the stop part 49, thereby maintaining the state in which the front of the grain bin 6 and the support roller 37 are lifted.

[0155] (The operation of opening the grain bin from the closed state) - 2

[0156] like Figure 10As shown, the operator lifts the engaging member 39 and pulls it upward from the opening 36b of the guide portion 36, placing the engaging member 39 on the support portion 38a of the upper part of the bracket 38, and holding the engaging member 39 in the state of being lifted.

[0157] The operator overcomes the spring 44 against the operating lever 42 (see reference). Figure 6 To perform the operation, remove the engaging member 41 from the fixing part 5a of the threshing device 5, and grasp the handle 62 connected to the support frame 14, as if from... Figures 10 to 11 As shown, the grain bin 6 is operated in the open state A3, which is laterally outward to the right.

[0158] Thus, by placing the lifting roller 47 on the guide section 36, the front part of the grain box 6 is supported on the guide section 36 via the lifting roller 47, and the lifting roller 47 rolls to the right along the guide section 36 and is guided from the closed state A1 to the open state A3 side.

[0159] The support roller 37 exits from the opening 36a of the guide section 36 and is placed on the guide section 36 by displacement of various parts of the grain bin 6. By placing the support roller 37 on the guide section 36, the front part of the grain bin 6 is supported on the guide section 36 via the support roller 37, and the support roller 37 rolls to the right along the guide section 36 and is guided from the closed state A1 to the open state A3.

[0160] (Operation of opening the grain bin from closed to open state) - 3

[0161] like Figure 11 As shown, when the grain bin 6 is operated in the open state A3, when the lifting roller 47 disengages from the guide 36 and the support roller 37 reaches the right end of the guide 36, in the intermediate state holding mechanism 58, the bearing portion 59a of the support member 59 contacts the blocking portion 54a of the blocking member 54 (stopping mechanism 53) in the blocking position C1, and the grain bin 6 stops.

[0162] In this case, even if a large load is applied to the blocking part 54a of the blocking member 54 (stopping mechanism 53) at the blocking position C1 towards the opening state A3 due to the inertia of the grain bin 6 in the opening state A3, the blocking member 54 will not move because the bearing part 54b of the blocking member 54 is in contact with the upper surface of the body frame 12.

[0163] like Figure 11 As shown, the state in which the grain bin 6 stops when the bearing portion 59a of the support member 59 contacts the blocking portion 54a of the blocking member 54 (stopping mechanism 53) at the blocking position C1 is the intermediate state A2 of the grain bin 6. The intermediate state A2 is set at the right end of the body frame 12 between the closed state A1 and the open state A3.

[0164] Using the guide section 36, the support roller 37 is guided between the closed state A1 and the intermediate state A2. In the intermediate state A2, the support roller 37 is located at the right end of the guide section 36, and the front of the grain box 6 is supported by the support roller 37 on the guide section 36.

[0165] When the grain bin 6 is operated from the closed state A1 to the open state A3, the grain bin 6 stops in the intermediate state A2 by using the stopping member 54 (stopping mechanism 53) at the stopping position C1.

[0166] like Figure 11 As shown, when the grain bin 6 is stopped in the intermediate state A2, the operator removes the engaging member 60 from the support portion 59b of the support member 59 in the intermediate state holding mechanism 58. The engaging member 60 is lowered by the spring 61 and inserted into the opening portion 52a of the bracket 52, thus holding the grain bin 6 in the intermediate state A2.

[0167] (Operation of opening the grain bin from closed to open) - 4

[0168] When the operator moves the grain bin 6 from the intermediate state A2 to the open state A3, such as Figure 11 As shown, in the intermediate state holding mechanism 58, the operator lifts the engaging member 60 and pulls it upward from the opening 52a of the bracket 52, releasing the holding in the intermediate state A2, and placing the engaging member 60 on the support portion 59b of the support member 59 and holding it in the state where it has been lifted.

[0169] The operator holds the handle 62 and slightly moves the grain bin 6 from the intermediate state A2 to the closed state A1, so that the bearing part 59a of the support member 59 moves slightly away from the blocking part 54a of the blocking member 54 (stopping mechanism 53) in the blocking position C1.

[0170] As from Figures 11 to 12 As shown, in the stop mechanism 53, the operator grips the arm 56 and resists the spring 57, thereby operating the blocking member 54 (stop mechanism 53) to the permissible position C2, and grips the handle 62 to operate the grain bin 6 from the intermediate state A2 to the open state A3.

[0171] In the intermediate state holding mechanism 58, the engaging member 60 passes above the support 51 and the bracket 52, and the bearing portion 59a of the support member 59 passes above the blocking member 54 (stopping mechanism 53) at the permissible position C2.

[0172] Thus, the movement of the grain bin 6 from the intermediate state A2 to the open state A3 is permitted by the blocking member 54 (stopping mechanism 53) at the permitted position C2. After the grain bin 6 is operated from the intermediate state A2 to the open state A3, when the operator removes his hand from the arm 56, the blocking member 54 (stopping mechanism 53) is automatically operated to the blocking position C1 by the spring 57.

[0173] When the operator operates the grain bin 6 to the open position A3, the operator only needs to place the support (not shown) at the lower front part of the grain bin 6, and support the grain bin 6 on the ground via the support.

[0174] (Operation of closing the grain bin from open to closed) - 1

[0175] When the operator moves the grain bin 6 from open state A3 to closed state A1, if... Figure 12 As shown, the engaging member 39 is placed on the support portion 38a of the upper part of the bracket 38, and the engaging member 39 is held in a state to be lifted. In the intermediate state holding mechanism 58, the engaging member 60 is placed on the support portion 59b of the support member 59 and held in a state to be lifted. The operator removes the extension arm 50 from the operating arm 48 and installs it on the lower part 6a of the grain bin 6 in the lifting mechanism 45.

[0176] like Figures 6-9 As shown, the triangular guide member 63 is connected to the inner end of the lower part of the body frame 12 of the support frame 14.

[0177] As from Figures 12 to 11 As shown, when the grain bin 6 is operated from the open state A3 to the closed state A1, the guide member 63 is in a state of rising in contact with the inclined portion 36c of the guide portion 36, and the front of the grain bin 6 is slightly lifted by the guide member 63 and the inclined portion 36c of the guide portion 36.

[0178] By slightly lifting the front of the grain bin 6, the support roller 37 is placed on the guide section 36 from the inclined portion 36c of the guide section 36, and the front of the grain bin 6 is supported on the guide section 36 by the support roller 37, and the grain bin 6 reaches the intermediate state A2.

[0179] (Operation of closing the grain bin from open to closed) - 2

[0180] like Figure 11 As shown, when the grain bin 6 reaches the intermediate state A2, in the intermediate state holding mechanism 58, the engaging member 60 passes above the support part 51 and the bracket 52, and the bearing part 59a of the support member 59 contacts the blocking member 54 (stopping mechanism 53) at the blocking position C1.

[0181] The stopping member 54 (stopping mechanism 53) is tilted in the stopping position C1. Therefore, during the operation of moving the grain bin 6 from the open state A3 to the closed state A1, when the bearing portion 59a of the support member 59 contacts the stopping member 54 (stopping mechanism 53) in the stopping position C1, the bearing portion 59a of the support member 59 overcomes the spring 57 and moves the stopping member 54 (stopping mechanism 53) towards the permissible position C2, passing above the stopping member 54 (stopping mechanism 53) in the permissible position C2. Thus, the movement of the grain bin 6 from the intermediate state A2 to the closed state A1 is permitted by the stopping member 54 (stopping mechanism 53) in the permissible position C2.

[0182] When the grain bin 6 passes through the intermediate state A2 (when the bearing part 59a of the support member 59 passes above the blocking member 54 (stopping mechanism 53) at the permissible position C2), the blocking member 54 (stopping mechanism 53) is automatically operated to the blocking position C1 by means of the spring 57.

[0183] (Operation of closing the grain bin from open to closed) - 3

[0184] As from Figures 11 to 9 As shown, when the grain bin 6 is operated from the intermediate state A2 to the closed state A1, the support roller 37 is placed on the guide section 36, thereby the front part of the grain bin 6 is supported by the support roller 37 on the guide section 36, the support roller 37 rolls to the left along the guide section 36 and is guided from the intermediate state A2 to the closed state A1.

[0185] In the lifting mechanism 45, the lifting roller 47 is placed on the guide 36 from the inclined portion 36c of the guide 36, the operating arm 48 is operated upward, and the lifting arm 46 (the placement point where the lifting roller 47 contacts the guide 36) is operated to the lateral outward side of the right side of the machine frame 12 relative to the vertical line B1.

[0186] When the grain bin 6 reaches the closed state A1, the support roller 37 descends and enters the opening 36a of the guide section 36. Engaging member 41 (see reference) Figure 6 The spring 44 automatically engages with the fixing part 5a of the threshing device 5.

[0187] The operator removes the engaging member 39 from the support 38a of the bracket 38, uses the spring 40 to lower the engaging member 39, and inserts it into the opening 36b of the guide 36. Thus, the grain bin 6 is held in the closed state A1.

[0188] (First alternative embodiment of the invention)

[0189] The grain bin 6 can also be located on the left side of the body frame 12. According to this structure, the open state A3 of the grain bin 6 is such that it extends laterally outward from the body frame 12 to the left.

[0190] (Second alternative embodiment of the invention)

[0191] Alternatively, instead of the opening 36a of the guide portion 36, a recess with a bottom can be provided as an entry portion in the guide portion 36.

[0192] (Third alternative embodiment of the invention)

[0193] Alternatively, instead of the support roller 37, a sled-shaped sheet can be used as a support in the lower part 6a, 6b of the grain bin 6. In this structure, the inlet of the guide 36 can also be eliminated.

[0194] (Fourth other embodiment of the invention)

[0195] The support roller 37 can also be positioned on the rear side (equivalent to the side close to the first axis) relative to the support frame 14 when viewed from above, and the lifting mechanism 45 can also be positioned on the front side (equivalent to the side away from the first axis) relative to the support frame 14 when viewed from above.

[0196] (Fifth other embodiment of the invention)

[0197] When viewed from the front-back direction (equivalent to the radial direction relative to the first axis), the support roller 37 and the lifting mechanism 45 can also be positioned on the inside of the machine frame 12 relative to the bottom screw 9.

[0198] According to this structure, the support roller 37 and the lifting mechanism 45 are located in the area below the lower part 6b inside the machine frame 12 in the grain bin 6.

[0199] (Sixth other embodiment of the invention)

[0200] In the lifting mechanism 45, it can also be configured such that, with the support roller 37 descending and entering the opening 36a of the guide section 36, the operating arm 48 is located below, and the lifting arm 46 is located inside (on one side) of the body frame 12 relative to the vertical line B1.

[0201] According to this structure, the operator moves the operating arm 48 upward and moves the lifting arm 46 relative to the vertical line B1 to the lateral outer side (the other side) of the machine frame 12. Thus, the lifting arm 46 (the mounting point where the lifting roller 47 contacts the guide 36) moves relative to the vertical line B1 to the lateral outer side (the other side) of the machine frame 12. Through the lifting arm 46 and the lifting roller 47, the front of the grain bin 6 is lifted relative to the guide 36.

[0202] (Seventh other embodiment of the invention)

[0203] In the lifting mechanism 45, a locking mechanism (not shown) may also be provided. When the operating arm 48 is operated, the swing of the lifting arm 46 caused by the weight of the grain bin 6 is stopped by the stop part 49, and the front part of the grain bin 6 and the support roller 37 are kept in the state of being lifted, the lifting arm 46 can be fixed to the support frame 14 and released from the fixed state.

[0204] Therefore, when the front of the grain bin 6 and the support roller 37 are being raised, by fixing the lifting arm 46 to the support frame 14, it is possible to prevent the lifting arm 46 from swinging due to vibration or the like, thus preventing the front of the grain bin 6 and the support roller 37 from being lowered.

[0205] Industrial availability

[0206] This invention can be applied not only to ordinary combine harvesters, but also to self-tapping combine harvesters, and not only to rice harvesters, but also to harvesters of other crops.

[0207] Explanation of reference numerals in the attached figures

[0208] 6. Grain bins (storage section)

[0209] 6a lower part

[0210] 6b lower part

[0211] 9-pin bottom screw (crop discharge mechanism)

[0212] 12-body frame

[0213] 14 Support Frame

[0214] 36 Guiding Department

[0215] 36a Opening (Entrance)

[0216] 37 Support Rollers (Support Section)

[0217] 45 rising institutions

[0218] 46. ​​Raise your arm

[0219] 47 Lifting Roller

[0220] 48 manipulators

[0221] 49 Stop section

[0222] 50 extension arm

[0223] 53 Stopping mechanism

[0224] 57. Spring (Force Application Mechanism)

[0225] 58 Intermediate State Holding Mechanism

[0226] A1 Closed state

[0227] A2 intermediate state

[0228] A3 Open Status

[0229] B1 plumb line

[0230] C1 Block Position

[0231] C2 Permitted Location

[0232] P1 axis (first axis)

[0233] P2 axis (second axis)

Claims

1. A harvester, wherein, have: Body frame; The storage section is supported on the body frame in a state-changing manner around a first axis in the vertical direction of the body frame, between a closed state and an open state. The closed state is when the storage section is located on the body frame and can store the harvested crops, and the open state is when the storage section extends laterally outward from the body frame. A support portion is provided at the lower part of the storage portion; and The guide section supports the storage section by mounting the support section. The harvester has a lifting mechanism capable of lifting the support portion from the guide portion. The support portion moves integrally with the storage portion as the state of the storage portion changes. The guide portion is positioned below the trajectory of the support portion during the state change of the storage portion.

2. The harvester according to claim 1, wherein, An entry section is provided in the guide section. When the storage section is operated to the closed state, the support section descends and enters the entry section. Using the lifting mechanism, the support portion is lifted from the entry portion.

3. The harvester according to claim 1 or 2, wherein, The support portion is a support roller that can roll along the guide portion.

4. The harvester according to claim 1 or 2, wherein, The lifting mechanism is provided with: Raise the arm so that it can swing to one side and the other side relative to a vertical line passing through the second axis, about a second axis in a radial direction relative to the first axis, and extend downward from the second axis; A lifting roller is disposed at the lower part of the lifting arm and is capable of rolling along the guide portion; An operating arm is provided on the lifting arm. The operating arm is manually operated. By operating the lifting arm to the other side relative to the vertical line, the support part can be lifted via the lifting arm and the lifting roller. as well as The stop prevents the lifting arm from swinging to the other side when the support is lifted.

5. The harvester according to claim 4, wherein, The harvester has an extension arm that can be attached to and detached from the operating arm, thereby extending the length of the operating arm.

6. The harvester according to claim 1 or 2, wherein, A support frame is provided at the lower part of the storage section in a direction orthogonal to the radial direction relative to the first axis. From a top view, the support portion is disposed on one side of the support frame, close to the first axis and away from the first axis, and the lifting mechanism is disposed on the other side of the support frame, close to the first axis and away from the first axis.

7. The harvester according to claim 1 or 2, wherein, A crop discharge mechanism capable of discharging crops from the storage section is disposed at the bottom of the storage section along a radial direction relative to the first axis. When viewed from a radial direction relative to the first axis, the support is positioned on one side of the crop discharge mechanism in the lateral direction, and the lifting mechanism is positioned on the other side of the crop discharge mechanism in the lateral direction.

8. The harvester according to claim 7, wherein, When viewed radially relative to the first axis, the lower part of the storage section is formed in a recessed shape that narrows laterally towards the crop discharge mechanism. The lifting mechanism is located in the area below the lower part of the storage section.

9. The harvester according to claim 7, wherein, When viewed radially relative to the first axis, the support portion is disposed on the inner side of the body frame relative to the crop discharge mechanism, and the lifting mechanism is disposed on the lateral outer side of the body frame relative to the crop discharge mechanism.

10. The harvester according to claim 1 or 2, wherein, An intermediate state is defined at the end of the body frame, between the closed state and the open state. The guide section is capable of guiding the storage section between the closed state and the intermediate state. The harvester has a stopping mechanism that can be operated to a blocking position and a permissible position. The blocking position is the position where the storage section stops in the intermediate state when it is operated from the closed state to the open state. The permissible position is the position where the storage section in the intermediate state is allowed to move to the open state and to the closed state.

11. The harvester according to claim 10, wherein, The harvester has a force-applying mechanism that applies force to the stopping mechanism at the stopping position. When the storage section is operated from the open state to the intermediate state, the storage section contacts the stop mechanism at the stop position, thereby the stop mechanism is operated to the allowable position against the force application mechanism. When the storage section passes through the intermediate state, the stop mechanism is operated to the stop position by the force application mechanism.

12. The harvester according to claim 10, wherein, The harvester has an intermediate state holding mechanism, which can hold and release the storage section in the intermediate state.

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