Harvester

Abstract

To provide a harvester that can smoothly change the state of a mounting member to which a receiving device is attached.SOLUTION: A harvester includes a driving unit having a driver's seat, a cabin that covers the driving unit, a receiving device that receives signals from a satellite, a mounting member 22 to which the receiving device is attached, and a support member 24 that is attached to the cabin and supports the mounting member. The mounting member 22 is configured to be able to change between a usage state in which the receiving device is used and a storage state in which the receiving device is stored at a lower position than the usage state. The harvester further includes a locking mechanism 50 that can change between a fixed state that fixes the mounting member 22 to the usage state and a released state that releases the fixation of the mounting member 22 to the usage state, and a holding member 53 that holds the locking mechanism in the released state.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a harvester having a cabin covering a driver's section. [Background technology]

[0002] For example, the harvester disclosed in Patent Document 1 is provided with a receiving device (referred to as a "satellite positioning unit" in the document) that receives signals from a satellite, and a mounting member (referred to as a "position change mechanism" in the document) to which the receiving device is attached. The mounting member is configured to be able to change the state of the receiving device between a use state (referred to as a "high position state" in the document) in which the receiving device is located above the top end of the cabin, and a storage state (referred to as a "low position state" in the document) that is lower than the use state. When the receiving device receives a signal from a satellite, the mounting member is in a use state to improve positioning accuracy. Also, when the combine harvester is stored in a storage facility such as a barn during times other than the harvest season, the mounting member is in a storage state so that the combine harvester can fit in the storage facility even if the ceiling of the storage facility is low. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-006005 Summary of the Invention [Problem to be solved by the invention]

[0004] When the receiving device receives a signal from a satellite, the mounting member is held in the use state to improve positioning accuracy, but since vibrations tend to increase when the harvester is traveling, it is important that the mounting member is firmly held in the use state. However, if the mounting member is held too firmly in the use state, for example, a worker may find it troublesome to release the holding when changing the state of the mounting member from the use state to the storage state. For this reason, it is also important that the mounting member is easily changed in state by the worker.

[0005] An object of the present invention is to provide a harvester that can smoothly change the state of a mounting member to which a receiving device is attached. [Means for solving the problem]

[0006] The harvester of the present invention comprises a driving section having a driver's seat, a cabin covering the driving section, a receiving device for receiving signals from a satellite, a mounting member to which the receiving device is attached, and a support member attached to the cabin and supporting the mounting member, and the mounting member is configured to be changeable between a usage state in which the receiving device is used and a storage state in which the receiving device is stored at a position lower than the position of the usage state, and is characterized in that the harvester comprises a locking mechanism changeable between a fixed state that fixes the mounting member to the usage state and a released state that releases the fixing of the mounting member to the usage state, and a holding member that holds the locking mechanism in the released state.

[0007] According to the present invention, a locking mechanism that fixes the mounting member in a use state is provided. Therefore, compared to a configuration in which a locking mechanism is not provided, the mounting member is held firmly in the use state. In addition, the locking mechanism is configured to be changeable between a fixed state and an unlocked state, and the unlocked state of the locking mechanism can be held by the holding member. Therefore, for example, when an operator or the like changes the state of the mounting member from the use state to the storage state, if the locking mechanism is held in the unlocked state by the holding member, the mounting member can be changed to the storage state as it is. This allows the operator or the like to easily change the state of the mounting member. As a result, a harvester that can smoothly change the state of the mounting member to which the receiving device is attached is realized.

[0008] In the present invention, it is preferable that a positioning mechanism be provided that is configured separately from the locking mechanism and that determines the position of the mounting member in the usage state.

[0009] With this configuration, even if the locking mechanism is not in the fixed state, the mounting member is positioned in the position for use by a positioning mechanism configured separately from the locking mechanism, which makes it possible to temporarily fasten the mounting member in the used state.

[0010] In the present invention, it is preferable that the positioning mechanism determines a position of the mounting member in the stored state.

[0011] With this configuration, the mounting member is positioned in a position for the stored state by the positioning mechanism, which makes it possible to temporarily fasten the mounting member in the stored state.

[0012] In the present invention, the mounting member is configured to swing around a swing axis extending horizontally so as to be changeable between the use state and the stored state, and it is preferable that the locking mechanism and the positioning mechanism are arranged on the same side of the mounting member in the direction of the swing axis.

[0013] According to this configuration, the locking mechanism and the positioning mechanism are disposed together on one side of the mounting member, which makes the entire mechanism compact and saves space.

[0014] In the present invention, the mounting member is configured to be able to swing around a swing axis extending horizontally and change its state between the use state and the stored state, and it is preferable that the support member has a first prevention portion that prevents the mounting member from swinging around the swing axis beyond the position of the stored state when the mounting member abuts against the first prevention portion.

[0015] With this configuration, the first blocking portion can firmly support the mounting member in the stored state.

[0016] In the present invention, it is preferable that the first blocking portion is made of an elastic body.

[0017] With this configuration, the mounting member in the stored state is less likely to be subjected to impacts, and the mounting member is prevented from being damaged.

[0018] In the present invention, it is preferable that the support member has a second blocking portion that prevents the mounting member from swinging around the swing axis beyond the position in the use state when the mounting member abuts against the second blocking portion.

[0019] With this configuration, the mounting member is in a use state when the mounting member and the second blocking portion come into contact with each other. Therefore, when the mounting member and the second blocking portion come into contact with each other, the mounting member is maintained in a use state, and it is easy to change the state of the locking mechanism from the released state to the fixed state.

[0020] In the present invention, it is preferable that the second blocking portion is made of an elastic body.

[0021] With this configuration, the mounting member is less likely to be subjected to impacts when in use, and the mounting member is prevented from being damaged.

[0022] In the present invention, it is preferable that the mounting member is configured to be able to swing around a swing axis extending horizontally and be changeable between the use state and the stored state, and that the mounting member is provided with a handle that is attached to the mounting member and used to swing the mounting member.

[0023] With this configuration, the operability of the mounting member is improved compared to a configuration in which no handle is provided.

[0024] In the present invention, it is preferable that the mounting member is disposed on one side of the driver's seat in the fore-and-aft direction of the aircraft, and the handle extends from the mounting member toward the driver's seat in the fore-and-aft direction of the aircraft.

[0025] With this configuration, an operator or the like can easily operate the steering wheel from the driver's seat.

[0026] In the present invention, it is preferable that the handle extends downward from the mounting member in the use state.

[0027] With this configuration, an operator can easily operate the handle from below.

[0028] In the present invention, it is preferable that the mounting member is configured to be capable of being fixed in the stored state.

[0029] With this configuration, the mounting member is securely maintained in a stored state, thereby reducing the risk of the mounting member or the receiving device being accidentally damaged while the harvester is in storage. [Brief description of the drawings]

[0030] [Figure 1] FIG. 2 is an overall side view of the harvester. [Diagram 2] FIG. [Diagram 3] 1 is a left side view of the fuselage showing the receiving device, the mounting member, the support member, the locking mechanism, and the holding mechanism. FIG. [Figure 4] 2 is a front view of the machine body showing the receiving device, the mounting member, the support member, the locking mechanism, the holding mechanism, and the lateral conveying unit. FIG. [Diagram 5] 4 is a cross-sectional view taken along line VV in FIG. 3, showing a fitting structure of a lock pin in a rocking bearing portion as a configuration of the positioning mechanism. [Figure 6] FIG. 4 is a plan view of the main parts showing a lock mechanism and a holding mechanism. [Figure 7] FIG. 4 is a rear view of the main part showing the lock mechanism and the holding mechanism. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] The combine harvester of this embodiment will be described below using a head-feeding combine harvester as an example.

[0032] FIG. 1 is a left side view of the combine harvester, and FIG. 2 is a plan view of the combine harvester. Here, for ease of understanding, in this embodiment, unless otherwise specified, "front" (the direction of the arrow "F" shown in FIG. 1) means the front in the longitudinal direction (traveling direction) of the machine body, and "rear" (the direction of the arrow "B" shown in FIG. 1) means the rear in the longitudinal direction (traveling direction) of the machine body. In addition, "up" (the direction of the arrow "U" shown in FIG. 1) and "down" (the direction of the arrow "D" shown in FIG. 1) are positional relationships in the vertical direction (direction perpendicular to the horizontal plane) and indicate relationships at ground height. Furthermore, the left-right direction or lateral direction means the transverse direction of the machine body (machine body width direction) perpendicular to the longitudinal direction of the machine body. That is, "left" (the direction of the arrow "L" shown in FIG. 2) and "right" (the direction of the arrow "R" shown in FIG. 2) mean the leftward and rightward directions of the machine body, respectively. The same applies to the drawings from FIG. 3 onwards.

[0033] [Overall information about combine harvesters] As shown in Figure 1, the traveling body 1 of the combine harvester has a body frame 2, which is formed by connecting a number of steel materials such as square pipes. A pair of left and right crawler-type traveling devices 3 are mounted on the lower part of the body frame 2. A driving section 5 is provided on the right side portion of the front part of the traveling body 1. An engine E is disposed below the driving section 5. The driving section 5 is covered by a cabin 10.

[0034] The reaping unit 4 is provided in a manner that allows it to rise and fall in front of the traveling machine body 1. The reaping unit 4 raises and reaps the planted stalks (crops) of rice or wheat in multiple planting rows in front of the traveling machine body 1, and transports the reaped stalks toward the rear of the machine body. A threshing device 6 and a grain tank 8 are supported side-by-side in the rear of the machine body frame 2. The threshing device 6 is disposed behind the reaping unit 4, and the grain tank 8 is disposed behind the driving unit 5. A feed chain 7 is provided on the left side of the threshing device 6, and the feed chain 7 clamps and transports the reaped stalks reaped by the reaping unit 4 toward the rear. The threshing device 6 threshes the reaped stalks that have been input, and a sorting process is performed to separate the grains and dust obtained by the threshing process. The grain tank 8 stores the grains that have been threshed and transported from the threshing device 6. A grain discharge device 9 that removes grains from the grain tank 8 is connected to the rear of the grain tank 8. The grain discharge device 9 corresponds to the "conveyor device" described in the claims.

[0035] The grain discharge device 9 is equipped with a vertical conveying section 9A and a horizontal conveying section 9B. The vertical conveying section 9A is connected to the rear lower section of the grain tank 8 and vertically conveys the grains stored in the grain tank 8. The horizontal conveying section 9B is connected to the upper end section of the vertical conveying section 9A and feeds the grains from the vertical conveying section 9A horizontally. A discharge outlet 9C is provided at the downstream end section in the conveying direction of the horizontal conveying section 9B. The horizontal conveying section 9B conveys the grains from the vertical conveying section 9A to the discharge outlet 9C and discharges them outside the machine from the discharge outlet 9C.

[0036] The horizontal conveying section 9B is configured to be able to move up and down and turn left and right. As shown in Figures 1 and 2, when the grain discharge device 9 is not in use, the horizontal conveying section 9B extends forward and backward while being positioned above the threshing device 6 and the grain tank 8 and straddling the center part of the machine body in a plan view. The state of the horizontal conveying section 9B at this time is called the "storage state". The position of the horizontal conveying section 9B at this time is called the "home position".

[0037] When the grain discharge device 9 is used, the lateral conveying section 9B can extend from the stored state stored in the home position to the outside of the machine body to discharge grains. Here, the outside of the machine body means the left side of the left side of the threshing device 6 (the outside of the machine body), the right side of the right side of the grain tank 8 (the outside of the machine body), and the rear side of the rear ends of the threshing device 6 and the grain tank 8. In other words, when the grain discharge device 9 is used, the lateral conveying section 9B extends to the left or right side or rearward away from the traveling machine body 1 to discharge grains stored in the grain tank 8.

[0038] The combine harvester of this embodiment is provided with a receiving device 21. The receiving device 21 receives GNSS (Global Navigation Satellite System, such as GPS, GLONASS, Galileo, QZSS, and BeiDou) signals from artificial satellites (not shown) to acquire the vehicle's position. In order to complement the satellite navigation by the receiving device 21, an inertial navigation unit 19 incorporating a gyro acceleration sensor and a magnetic direction sensor is provided. As will be described later, the inertial navigation unit 19 is disposed in a location separate from the receiving device 21 in the combine harvester.

[0039] [Operation section] The driver's section 5 is disposed in a state in which it is biased toward the right side of the aircraft body with respect to the center of the aircraft body. As shown in Figs. 1 and 2, the driver's section 5 is covered by a cabin 10. The driver's section 5 is provided with a driver's seat 11, a front panel 12 located in front of the driver's seat 11, and a side panel 13 located to the left of the driver's seat 11. The driver's seat 11 is provided in the central area of ​​the driver's section 5. The driver sits in the driver's seat 11. The side panel 13 is provided to the left of the driver's seat 11. In other words, the side panel 13 is provided on the side of the driver's section 5 opposite to the side where the boarding and alighting door is located.

[0040] The front panel 12 is provided with a steering lever 16 and a meter panel 17. The steering lever 16 is an operating tool for driving operations, and is provided at the right end of the front panel 12, located in front of the driver's seat 11. The meter panel 17 is provided in the center of the left and right of the front panel 12. A driver in the driver's section 5 can steer the traveling device 3 by operating the steering lever 16. The meter panel 17 displays, for example, the traveling speed, engine RPM, remaining fuel, etc. In addition, the driver in the driver's section 5 can operate the meter panel 17 as necessary, and the display items on the meter panel 17 are changed according to the driver's operation.

[0041] The side panel 13 is provided with a main transmission control lever 18 and the like. The main transmission control lever 18 is located at the front of the side panel 13. The main transmission control lever 18 is configured as a lever that can be pivoted forward and backward. A driver in the driver's section 5 can change the speed of a main transmission (not shown) by operating the main transmission control lever 18. The side panel 13 is adjacent to the left side wall of the cabin 10.

[0042] Additionally, inside the side panel 13, an inertial navigation unit 19 is provided at a location below and behind the swing support shaft of the main speed change operation lever 18. The inertial navigation unit 19 is disposed at a location lower than the receiving device 21 in the combine. Therefore, the inertial navigation unit 19 is less susceptible to the effects of vibrations of the combine compared to a configuration in which the inertial navigation unit 19 is disposed at the same height as the receiving device 21. As shown in FIG. 2, the inertial navigation unit 19 is located in the central region in the left-right direction of the machine body. The inertial navigation unit 19 is located below the receiving device 21.

[0043] A sliding window 10W (see Figures 3 and 5) is provided on the left side wall of the cabin 10. The window 10W extends vertically between the upper surface of the side panel 13 and the roof 10R of the cabin 10. The cabin 10 is provided with a frame portion 10F (see Figures 3 and 4) for supporting the roof 10R. The frame portion 10F is located above the window 10W, i.e., at the top of the left side wall of the cabin 10, and extends along the fore-and-aft direction of the aircraft. The receiving device 21 is supported by the frame portion 10F. The frame portion 10F is used to support the roof 10R, the receiving device 21, and the window 10W.

[0044] A box-shaped upper protrusion 40 is provided behind the driver's seat 11. The upper surface of the upper protrusion 40 is located at a height corresponding to the upper part of the backrest of the driver's seat 11. The rear wall of the cabin 10 is supported by the upper protrusion 40. Although not described in detail, an air cleaner for intake to the engine E, an electronic control unit (so-called ECU), etc. are housed inside the upper protrusion 40.

[0045] [Regarding receiving device and mounting parts] The receiving device 21 and the mounting member 22 will be described with reference to Figs. 1 to 4. The receiving device 21 and the mounting member 22 are disposed on the front side of the aircraft relative to the driver's seat 11. The receiving device 21 is mounted to the mounting member 22. The mounting member 22 is supported by the cabin 10 via a support member 24 in a state in which the mounting member 22 can swing around a swing axis X1 in the front-rear direction on a lateral side portion of the cabin 10. The support member 24 is attached to the cabin 10 and supports the mounting member 22. The support member 24 is connected to the frame portion 10F with bolts.

[0046] The horizontal conveying section 9B is located on the side farther away from the cabin 10 as it approaches the front (free end). The receiving device 21 is located further forward than the base end rotating section 22A. This configuration prevents the receiving device 21 from coming into contact with the horizontal conveying section 9B.

[0047] For example, as shown in Figures 3 and 4, the state in which the mounting member 22 is swung upward corresponds to the "use state" described in the claims. Also, as shown by the two-dot chain line in Figure 4, the state in which the mounting member 22 is swung downward corresponds to the "storage state" described in the claims. The mounting member 22 is configured to be able to swing about a swing axis X1 extending horizontally to change between a use state in which the receiving device 21 is used and a storage state in which the receiving device 21 is stored at a lower position than the position in the use state. The mounting member 22 swings upward from the storage state to bring out the use state of the receiving device 21.

[0048] When the mounting member 22 is in use, the receiving device 21 is less susceptible to the effects of multipath and the like compared to the height of the receiving device 21 when the mounting member 22 is in the stored state, and the positioning accuracy of the receiving device 21 during harvesting work is improved. Furthermore, when the mounting member 22 is in the stored state, interference between the ceiling and the receiving device 21 is avoided even if the ceiling of the storage shed in which the combine is kept is low.

[0049] As shown by the two-dot chain line in Fig. 4, when the mounting member 22 is in the stored state, the entire receiving device 21 is located at a position lower than the upper end of the lateral conveyor 9B in the stored state. When the mounting member 22 is in the stored state, the receiving device 21 overlaps with the lateral conveyor 9B in the stored state in a side view of the aircraft. Also, as shown in Figs. 2 and 4, when the mounting member 22 is in the stored state, the receiving device 21 is located in the space between the cabin 10 and the lateral conveyor 9B.

[0050] As shown by the solid line in FIG. 4, when the mounting member 22 is in use, the receiving device 21 is located at a higher position than the upper end of the horizontal conveyor 9B in the stored state. As shown in FIG. 1 and FIG. 3, when the mounting member 22 is in use, the receiving device 21 overlaps with the roof 10R of the cabin 10 in a side view of the aircraft. More specifically, when the receiving device 21 is in use, the upper end of the receiving device 21 is higher than the roof 10R, and the mounting member 22 does not protrude above the upper end of the roof 10R. Also, as shown in FIG. 2 and FIG. 4, when the mounting member 22 is in use, the receiving device 21 is located between the cabin 10 and the horizontal conveyor 9B.

[0051] 4 shows an end P1 of the mounting member 22 in the stored state opposite the side where the cabin 10 is located, and an end P2 of the mounting member 22 in the used state opposite the side where the cabin 10 is located. End P1 is located a distance L2 away from end P2 on the side where the cabin 10 is located.

[0052] That is, in a plan view of the machine body, end P1 of the mounting member 22 opposite the cabin 10 in the stored state is located at a position closer to the cabin 10 by a distance L2 than end P2 of the mounting member 22 opposite the cabin 10 in the used state. With this configuration, it becomes possible to store the receiving device 21 as close as possible to the side where the cabin 10 is located, compared to a configuration in which end P1 and end P2 are at the same position in the left-right direction of the machine body, or end P1 is located on the opposite side to the side where the cabin 10 is located than end P2. This reduces the risk of contact between the receiving device 21 and the lateral conveying section 9B of the grain discharge device 9.

[0053] [Regarding the swing support structure of the mounting member] The structure of the mounting member 22 will be described with reference to Figs. 3 to 5. The mounting member 22 includes a base end rotation portion 22A, an arm portion 22B, and a mounting plate portion 22C. A rocking bearing portion 25 is provided on a support member 24, and the base end rotation portion 22A is fitted into the rocking bearing portion 25. The rocking bearing portion 25 supports the mounting member 22 so that it can rock around the rocking axis X1. The arm portion 22B is located forward of the base end rotation portion 22A. The mounting plate portion 22C is connected to the free end of the arm portion 22B by welding. The receiving device 21 is fixed to the mounting plate portion 22C with a bolt.

[0054] A handle 23 is attached to the arm portion 22B by welding. The handle 23 is used to swing the mounting member 22.

[0055] As shown in Fig. 3, a cylindrical small diameter portion 25a is formed at the front of the rocking bearing portion 25, and a cylindrical large diameter portion 25b is formed at the rear of the rocking bearing portion 25. The size of the inner diameter of the small diameter portion 25a is approximately the same as or slightly larger than the outer diameter of the base end rotating portion 22A. Therefore, the base end rotating portion 22A can be inserted through the small diameter portion 25a. In addition, a step portion 25c is formed between the small diameter portion 25a and the large diameter portion 25b.

[0056] The base end rotating part 22A is inserted into the large diameter part 25b, and the coil spring 26 and the bushing part 27 are fitted onto the base end rotating part 22A. One end of the coil spring 26 abuts against the step part 25c, and the other end of the coil spring 26 abuts against the bushing part 27. The outer diameter of the bushing part 27 is approximately the same as the inner diameter of the large diameter part 25b. Therefore, the bushing part 27 can hold the mounting member 22 so that the base end rotating part 22A extends along the oscillation axis X1.

[0057] A screw groove 22s is formed in the rear end of the base end rotating part 22A, and a nut Nu is screwed into this screw groove 22s. A washer 28 is interposed between the bushing part 27 and the nut Nu. In this state, the nut Nu is fastened to the base end rotating part 22A.

[0058] A hole perpendicular to the oscillation axis X1 is drilled in the base end rotating part 22A, and a lock pin 29 is inserted into this hole. The lock pin 29 abuts against the front end of the oscillation bearing part 25 to restrict the rearward sliding movement of the arm part 22B. With the lock pin 29 abutting against the front end of the oscillation bearing part 25, the coil spring 26 is compressed. Therefore, the lock pin 29 is biased so as to abut against the front end of the oscillation bearing part 25.

[0059] 5, a vertical groove 25V and a horizontal groove 25H are formed in the front end of the rocking bearing 25, and the lock pin 29 can engage with each of the vertical groove 25V and the horizontal groove 25H. The vertical groove 25V and the horizontal groove 25H are formed so as to intersect each other at right angles or approximately at right angles.

[0060] In this embodiment, as shown in Figures 3 and 4, the support member 24 is provided with a first blocking portion 30A and a second blocking portion 30B. The first blocking portion 30A and the second blocking portion 30B extend from the support member 24 in the lateral direction of the aircraft. The second blocking portion 30B extends from the upper end of the support member 24 to the side opposite to the side where the cabin 10 is located, and the first blocking portion 30A extends from the upper end of the support member 24 to the side opposite to the side where the cabin 10 is located. In other words, the first blocking portion 30A and the second blocking portion 30B extend from the cabin 10 in the lateral direction of the aircraft.

[0061] The second blocking portion 30B is located above the rocking bearing portion 25, and the first blocking portion 30A is located below the rocking bearing portion 25. When the mounting member 22 abuts against the second blocking portion 30B, the second blocking portion 30B prevents the mounting member 22 from swinging about the rocking axis X1 beyond the position in the stored state. When the mounting member 22 abuts against the second blocking portion 30B, the second blocking portion 30B prevents the mounting member 22 from swinging about the rocking axis X1 beyond the position in the used state. Each of the first blocking portion 30A and the second blocking portion 30B is made of an elastic body. The elastic body is, for example, rubber, but may be rock wool, urethane, or the like.

[0062] In this embodiment, the arm portion 22B is configured to be able to swing within a range of 90 degrees. That is, the angle difference between the angle of the arm portion 22B when the first blocking portion 30A and the arm portion 22B come into contact with each other and the angle of the arm portion 22B when the second blocking portion 30B and the arm portion 22B come into contact with each other is 90 degrees or approximately 90 degrees.

[0063] When the mounting member 22 is in the stored state, the first blocking portion 30A and the arm portion 22B come into contact with each other, and the lock pin 29 fits into the vertical groove portion 25V at the front end portion of the rocking bearing portion 25. Therefore, the angle of the arm portion 22B when the mounting member 22 is in the stored state is firmly maintained by the first blocking portion 30A and the vertical groove portion 25V. The vertical groove portion 25V determines the position of the mounting member 22 in the stored state.

[0064] When the arm portion 22B swings upward from the storage state of the receiving device 21, the arm portion 22B moves away from the first blocking portion 30A, and the lock pin 29, along with the swing of the arm portion 22B, comes out of the vertical groove portion 25V against the biasing force of the coil spring 26. Then, when the arm portion 22B swings upward by 90 degrees from the storage state of the receiving device 21, the second blocking portion 30B and the arm portion 22B come into contact with each other, and the lock pin 29 fits into the horizontal groove portion 25H at the front end portion of the swing bearing portion 25. The horizontal groove portion 25H determines the position of the mounting member 22 in the usage state.

[0065] [Regarding the locking mechanism and holding member] As shown in Fig. 3 to Fig. 7, this embodiment includes a locking mechanism 50 and a holding member 53. The locking mechanism 50 is for holding the receiving device 21 in a position for use. The locking mechanism 50 is configured to be changeable between a fixed state in which the mounting member 22 is fixed to a use state and a released state in which the mounting member 22 is released from the use state. The holding member 53 holds the locking mechanism 50 in the released state.

[0066] The lock mechanism 50 includes an engaging portion 51 and an engaged portion 52. The engaging portion 51 includes an L-shaped portion 51A, a hook portion 51B, a coil spring 51C, a washer 51D, and a snap pin 51E. The engaged portion 52 is connected to the arm portion 22B. The engaged portion 52 has an engaged hole 52a formed therein.

[0067] The base end bracket portion 31 is connected and supported by the second blocking portion 30B. The holding member 53 is connected to the base end bracket portion 31. The holding member 53 has a round bar portion 53A and a flat plate portion 53B. The round bar portion 53A of the holding member 53 extends from the base end bracket portion 31 toward the rear of the aircraft. The flat plate portion 53B of the holding member 53 is welded to the longitudinal center portion of the round bar portion 53A. A round hole 53h is drilled in the flat plate portion 53B of the holding member 53, and the engaging portion 51 of the locking mechanism 50 is inserted through the round hole 53h.

[0068] Of the L-shaped portion 51A, a front portion on the side where the mounting member 22 is located extends along the left-right direction of the aircraft body. Of the L-shaped portion 51A, a rear portion on the opposite side to the side where the mounting member 22 is located is bent into an L shape.

[0069] An insertion hole is formed in the base end bracket portion 31, and this insertion hole overlaps with the round hole 53h of the flat portion 53B in a side view of the aircraft. The front portion of the L-shaped portion 51A is inserted into the round hole 53h and the insertion hole of the base end bracket portion 31.

[0070] The coil spring 51C and the washer 51D are fitted to the front of the L-shaped portion 51A and are located between the flat portion 53B and the base end bracket portion 31. An insertion hole for the snap pin 51E is formed in the front of the L-shaped portion 51A. The snap pin 51E is inserted into the insertion hole with the coil spring 51C and the washer 51D fitted to the front of the L-shaped portion 51A. The washer 51D is always located on the rear side of the machine (the side away from the locked portion 52) from the snap pin 51E. The coil spring 51C is sandwiched and compressed between the washer 51D and the flat portion 53B. The coil spring 51C presses the washer 51D and the flat portion 53B. Therefore, a biasing force is applied by the coil spring 51C to the L-shaped portion 51A so as to displace it to the right side of the machine.

[0071] The hook portion 51B is fixed by welding between the front and rear portions of the L-shaped portion 51A. The hook portion 51B is configured to be able to come into contact with the round bar portion 53A of the holding member 53 by the L-shaped portion 51A rotating about an axis extending laterally of the aircraft body.

[0072] When the mounting member 22 is in the use state, when the front part of the L-shaped portion 51A is inserted through the locked hole 52a, the locking mechanism 50 is in a fixed state that fixes the mounting member 22 in the use state. At this time, the state in which the front part of the L-shaped portion 51A is inserted through the locked hole 52a is maintained by the biasing force of the coil spring 51C.

[0073] To change the lock mechanism 50 from this state to the release state, an operator (including a driver) pulls the L-shaped portion 51A toward the rear of the vehicle against the biasing force of the coil spring 51C, and the front portion of the L-shaped portion 51A comes out of the locking hole 52a. Then, the operator rotates the L-shaped portion 51A around the axis of the vehicle lateral to bring the hook portion 51B into contact with the round bar portion 53A of the holding member 53. The extending end of the round bar portion 53A is tapered so that the diameter becomes smaller toward the tip side. In addition, an engagement hole is formed in the hook portion 51B, and the engagement hole of the hook portion 51B engages with the tapered extending end of the round bar portion 53A. At this time, the front portion of the L-shaped portion 51A comes out of the locking hole 52a, and the locking portion 51 is held hooked on the holding member 53 by the biasing force of the coil spring 51C. This puts the lock mechanism 50 in the released state. At this time, the holding member 53 holds the lock mechanism 50 in the released state.

[0074] To change the locking mechanism 50 from this state to the fixed state, the operator pulls the L-shaped portion 51A toward the side where the driving part 5 is located against the biasing force of the coil spring 51C, and rotates the L-shaped portion 51A until the angle at which the hook portion 51B does not get caught on the extended end of the round bar portion 53A is reached. Then, when the operator releases the L-shaped portion 51A from his / her hand, the biasing force of the coil spring 51C causes the front portion of the L-shaped portion 51A to pass through the locking hole 52a, and the locking mechanism 50 enters the fixed state.

[0075] When the mounting member 22 is in the use state and the locking mechanism 50 is in the release state, the locking pin 29 fits into the lateral groove 25H at the front end of the rocking bearing 25. As a result, the angle of the arm portion 22B when the mounting member 22 is in the use state is firmly maintained by the lateral groove 25H. This prevents the receiver 21 and the mounting member 22 from falling under their own weight even if the locking mechanism 50 is changed to the release state. In this way, the positioning mechanism (locking pin 29 and lateral groove 25H) is configured separately from the locking mechanism 50, and positions the mounting member 22 in the use state.

[0076] The locking mechanism 50 and the positioning mechanism (lock pin 29 and lateral groove portion 25H) are disposed on the same side of the mounting member 22 in the direction of the rocking axis X1. Also, the handle 23 extends from the mounting member 22 to the side where the driver's seat 11 is located in the fore-and-aft direction of the machine body. Furthermore, the handle 23 extends downward from the mounting member 22 in the in-use state. This configuration makes it easy to operate both the locking mechanism 50 and the handle 23, even when an operator or the like leans out from the driver's seat 11 to work.

[0077] [Another embodiment] The present invention is not limited to the configurations exemplified in the above-described embodiments, and other representative embodiments of the present invention will be described below.

[0078] (1) The mounting member 22 is configured to be able to change between a use state and a storage state by swinging up and down about the swing axis X1. This embodiment is not limited to this, and the mounting member 22 may be configured to be able to change between a use state and a storage state by sliding up and down.

[0079] (2) The pivot axis X1 of the mounting member 22 extends in the fore-aft direction of the aircraft body. This is not limited to the embodiment, and the pivot axis X1 of the mounting member 22 may extend in the left-right direction of the aircraft body. In other words, the mounting member 22 may be configured to pivot about the pivot axis X1 extending in the horizontal direction. Note that the "horizontal direction" described in the claims is not limited to the strictly horizontal direction, but also includes the meaning of an approximately horizontal direction.

[0080] (3) In the above embodiment, the locked portion 52 is connected to the arm portion 22B, but the configuration may not include the locked portion 52. In this case, the front end of the L-shaped portion 51A of the locking portion 51 may be configured to contact the lower edge of the arm portion 22B on the rotation path of the arm portion 22B. In this state, the mounting member 22 is fixed in the usage state by being supported from below by the locking portion 51.

[0081] (4) In the above embodiment, a positioning mechanism (lock pin 29 and lateral groove 25H) for positioning mounting member 22 in the usage state is provided, but the positioning mechanism may be configured to include only lateral groove 25H for positioning mounting member 22 in the usage state, without including vertical groove 25V. Alternatively, a configuration may be used in which no positioning mechanism is provided. When no positioning mechanism is provided, a configuration may be used in which, for example, sliding friction during rotation is applied to base end rotating portion 22A fitted into rocking bearing portion 25, so that mounting member 22 does not rotate under its own weight.

[0082] (5) In the above-described embodiment, the lock mechanism 50 and the positioning mechanism (the lock pin 29 and the lateral groove portion 25H) are disposed on the same side in the direction of the oscillation axis X1 with respect to the mounting member 22. This embodiment is not limited to this, and the lock mechanism 50 and the positioning mechanism may be configured to be separated by the mounting member 22.

[0083] (6) A configuration in which only one of the first blocking portion 30A and the second blocking portion 30B is provided may be used, or a configuration in which neither the first blocking portion 30A nor the second blocking portion 30B is provided may be used.

[0084] (7) Only one of the first blocking portion 30A and the second blocking portion 30B may be made of an elastic material, or both the first blocking portion 30A and the second blocking portion 30B may be made of a non-elastic material.

[0085] (8) The handle 23 for swinging the mounting member 22 may not be attached to the mounting member 22. In this case, a linkage mechanism or a wire linkage mechanism may be interposed between the handle 23 and the mounting member 22. Alternatively, the handle 23 may not be provided.

[0086] (9) In the above embodiment, the locking mechanism 50 fixes the mounting member 22 in the usage state. This is not limited to the embodiment, and for example, a second locking mechanism separate from the locking mechanism 50 may be provided, and the second locking mechanism may be configured to fix the mounting member 22 in the storage state. In this case, the mounting member 22 is configured to be fixed in the storage state.

[0087] The configurations disclosed in the above-mentioned embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, unless a contradiction occurs. In addition, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these embodiments, and can be appropriately modified within the scope of the present invention. [Industrial Applicability]

[0088] The present invention is applicable to harvesters that have a cabin that covers the driver's section. Therefore, in addition to the head-feeding combine harvester exemplified in the above embodiment, the present invention is applicable to various harvesters such as a normal type combine harvester, a corn harvester, a sugarcane harvester, a soybean harvester, and a root vegetable harvester. [Explanation of symbols]

[0089] 5: Driving section 10: Cabin 11: Driver's seat 21: Receiving device 22: Mounting material 23: Handle 24: Support member 25H: Horizontal groove (positioning mechanism) 25V: Vertical groove (positioning mechanism) 29: Lock pin (positioning mechanism) 30A: First blocking part 30B:Second blocking part 50: Locking mechanism 53: Retaining member X1: Oscillating shaft center

Claims

1. A driver's section having a driver's seat; A cabin covering the driver's section; A receiving device for receiving a signal from a satellite; a mounting member to which the receiving device is attached; a support member attached to the cabin and supporting the mounting member, The attachment member is configured to be able to change a state between a use state in which the receiving device is used and a storage state in which the receiving device is stored at a lower position than the use state, a lock mechanism that can be changed between a fixed state in which the mounting member is fixed to the use state and a released state in which the mounting member is released from the use state; a retaining member that retains the locking mechanism in the released state.

2. The harvester according to claim 1 , further comprising a positioning mechanism configured separately from the locking mechanism and configured to determine a position of the mounting member in the use state.

3. The harvester according to claim 2 , wherein the positioning mechanism determines the position of the mounting member in the stored state.

4. The mounting member is configured to be swingable about a swing axis extending horizontally to be changeable between the use state and the storage state, The harvester according to claim 2 or 3, wherein the locking mechanism and the positioning mechanism are arranged on the same side of the mounting member in the direction of the swing axis.

5. The mounting member is configured to be swingable about a swing axis extending horizontally to be changeable between the use state and the storage state, A harvester as described in any one of claims 1 to 3, wherein the support member has a first blocking portion that prevents the mounting member from swinging around the swing axis beyond the stored state position when the mounting member abuts against the first blocking portion.

6. The harvester according to claim 5 , wherein the first blocking portion is made of an elastic material.

7. The harvester according to claim 5 , wherein the support member has a second blocking portion that, when abutted by the mounting member, prevents the mounting member from swinging about the swing axis beyond the position in the use state.

8. The harvester according to claim 7 , wherein the second blocking portion is made of an elastic material.

9. The mounting member is configured to be swingable about a swing axis extending horizontally to be changeable between the use state and the storage state, 4. A harvester according to claim 1, further comprising a handle attached to the mounting member for swinging the mounting member.

10. The mounting member is disposed on one side of the driver's seat in a front-rear direction of the aircraft, The harvester according to claim 9, wherein the handle extends from the mounting member toward the driver's seat in the fore-and-aft direction of the machine body.

11. 10. The harvester of claim 9, wherein the handle extends downwardly from the mounting member in the use position.

12. The harvester according to any one of claims 1 to 3, wherein the mounting member is configured to be able to be fixed in the stored state.

Images