Head-feeding combine

Abstract

To provide a head-feeding combine having a guide member that is less likely to come into contact with other members and also is less likely to be deformed when moving in a direction of separating from a driving sprocket.SOLUTION: A first plate-like member MV1 is located between a third plate-like member FX1 and a fourth plate-like member FX2, and a guide member 92 on a free end side, when switched from a use state to a separation state S2, moves in a direction of approaching the fourth plate-like member FX2, and at least either a moving member MV or a fixed member FX comprises a restriction member 11 that restricts contact between the first plate-like member MV1 and the fourth plate-like member FX2 in the separation state S2.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a head-feeding combine harvester. [Background technology]

[0002] Patent document 1 discloses a head-feeding combine equipped with a handling depth conveying device that takes over the stalks that join at the confluence, which is the end point of both the left stock base conveying device and the right stock base conveying device, and conveys them upward and rearward.

[0003] This handling depth conveying device comprises a drive sprocket and a clamping rail. The clamping rail is configured with a rod supported on an inverted U-shaped holder, and is biased toward the handling depth conveying chain by a compression coil spring provided within the holder.

[0004] When removing harvested stalks that are stuck in the harvesting depth conveyor, the holder may need to be removed from the mounting base together with the clamping rail. In this case, the operator rotates the operating lever from the lock position upward to the release position, and slides the holder away from the drive sprocket. This disengages the lock pin on the mounting base from the lock hole on the holder. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-022404 A Summary of the Invention [Problem to be solved by the invention]

[0006] When the clamping rail disclosed in Patent Document 1 is moved in a direction away from the drive sprocket, the holder connected to the clamping rail may come into contact with other components located in the direction away from the drive sprocket.

[0007] Furthermore, when the clamping rail is moved in a direction away from the drive sprocket, one of the pair of hanging pieces on the holder that is closer to the drive sprocket may come into contact with the other of the pair of rising pieces on the mounting seat that is farther from the drive sprocket, which may result in deformation of the hanging piece on the holder that is closer to the drive sprocket or the rising piece on the mounting seat that is farther from the drive sprocket.

[0008] In view of the above situation, there is a demand for a head-feeding combine that is less likely to come into contact with other members when moved in a direction away from the drive sprocket and in which the guide members are less likely to deform. [Means for solving the problem]

[0009] As a means for solving the above-mentioned problems, the head-threshing combine of the present invention comprises a threshing device for threshing harvested culms, and a harvesting and conveying section provided in front of the threshing device for harvesting multiple planted culms, joining the harvested culms, and conveying them toward the threshing device, the harvesting and conveying section comprising a downstream conveying device for conveying the joined harvested culms downstream in the conveying direction of the joining section where the multiple harvested culms join, the downstream conveying device comprising an endless rotating body whose portion on the conveying path side is located outside the machine body, and a downstream conveying device provided opposite to the portion of the endless rotating body on the conveying path side, and a guide member for guiding the harvested stalks, the guide member having a base end guide member on a base end side, a free end guide member on a free end side that is separate from the base end guide member, and a connecting mechanism connecting the base end guide member and the free end guide member, the free end guide member being switchable between a use state and a separated state in which the free end guide member is further away from the endless rotating body than in the use state by releasing the connected state between the base end guide member and the free end guide member by the connecting mechanism, the base end guide member being configured to be connected to the free end guide member and a free end guide member. the free-end guide member is located at an end portion of the base-end guide member side and is provided with a movable member whose position relative to the fixed member is movable in a direction toward or away from the endless rotating body, the movable member comprising: a first plate-like member extending along a conveying path of the downstream conveying device; a second plate-like member opposed to the first plate-like member and spaced apart from the first plate-like member in a direction away from the endless rotating body; and a free-end connecting member connecting the first plate-like member and the second plate-like member; a third plate-shaped member extending along a conveying path of a flow-side conveying device; a fourth plate-shaped member opposed to the third plate-shaped member and spaced apart from the third plate-shaped member in a direction away from the endless rotating body; and a base-end side connecting member connecting the third plate-shaped member and the fourth plate-shaped member, wherein the first plate-shaped member is located between the third plate-shaped member and the fourth plate-shaped member, and when the free-end side guide member is switched from the use state to the separated state, the first plate-shaped member moves in a direction approaching the fourth plate-shaped member, and at least one of the movable member and the fixed member isA restricting member is provided to restrict the first plate-shaped member from contacting the fourth plate-shaped member in the separated state.

[0010] According to this configuration, the distance that the movable member moves in the direction away from the endless rotating body is smaller than in the configuration in which the first plate-like member abuts against the fourth plate-like member, so that the free-end guide member is less likely to come into contact with another member located in the direction away from the endless rotating body relative to the free-end guide member. Also, because the first plate-like member is restricted from abutting against the fourth plate-like member, the fourth plate-like member is less likely to deform.

[0011] In the present invention, it is preferable that the regulating member is provided on the fixed member.

[0012] When removing the free-end guide member from the base-end guide member, the worker holds the movable member by hand and operates it. Therefore, if the configuration of the movable member is as simple as possible, the movable member becomes easy to hold in the hand and the worker can operate the movable member easily. According to this configuration, the restricting member is provided on the fixed member rather than on the movable member, so the movable member has a simple configuration. This makes it easy for the worker to operate the movable member.

[0013] In the present invention, it is preferable that the regulating member is arranged with a gap in the transport direction of the harvested stalks in the downstream transport device and is composed of a plurality of plate-shaped members extending in the direction approaching and moving away from the endless rotating body.

[0014] According to this configuration, the regulating member has a simple structure, but is made up of a plurality of plate-like members, so that the regulating member can have sufficient strength.

[0015] In the present invention, it is preferable that the regulating member is fixed to the fourth plate-shaped member and the base-end connecting member, and extends along the base-end connecting member from the connection portion between the fourth plate-shaped member and the base-end connecting member toward the third plate-shaped member.

[0016] According to this configuration, since the restricting member is fixed across the fourth plate-like member and the base-end connecting member, the strength of the entire fixed member can be increased by the restricting member.

[0017] In the present invention, it is preferable that the connecting mechanism is composed of a pin provided on one of the movable member or the fixed member and extending in a direction toward or away from the endless rotating body, a hole provided on the other of the movable member or the fixed member through which the pin is inserted, and a slip-out prevention member that prevents the pin inserted in the hole from slipping out of the hole.

[0018] According to this configuration, the connection between the base end guide member and the free end guide member can be released by operating the retaining member, which makes it easier to switch the free end guide member between its used state and its separated state, and facilitates maintenance work when removing harvested stalks that are stuck in the downstream conveyor.

[0019] In the present invention, it is preferable that the distance from the connection portion of the regulating member with the base end connecting member to the end portion is smaller than the distance from the connection portion of the fourth plate member with the base end connecting member to the end portion.

[0020] According to this configuration, when the moving member moves in a direction away from the endless rotating body, the base end side connecting member and the restricting member are less likely to come into contact with each other.

[0021] In the present invention, it is preferable that, in the separated state, the free end guide member is in a position that does not overlap with the endless rotating body when viewed from a direction perpendicular to both the direction of approaching and separating from the endless rotating body and the conveying direction of the harvested stalks in the downstream conveying device.

[0022] According to this configuration, when the connection between the base end guide member and the free end guide member is released, the movable member can be lifted upward to remove it from the fixed member. This makes it easy to remove the movable member from the fixed member when removing harvested stalks stuck in the downstream conveyor, facilitating maintenance work. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2 is a left side view showing a head-feeding combine harvester. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] 13A and 13B are diagrams illustrating a state in which the base end guide member is used. [Figure 8] 13 is a diagram showing a proximal guide member in a separated state. FIG. [Figure 9] FIG. 13 is a left side view showing the positional relationship between the linking member and the belt. [Figure 10] 10 is a cross-sectional view taken along the line XX in FIG. 9. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] An embodiment of the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F is the "forward direction of the aircraft body," the direction of the arrow B is the "rearward direction of the aircraft body," the direction of the arrow L is the "leftward direction of the aircraft body," and the direction of the arrow R is the "rightward direction of the aircraft body."

[0025] [Overall configuration of the combine] A self-feeding combine is shown in Fig. 1. This combine is equipped with a crawler-type traveling device 1, a machine frame 2 supported by the traveling device 1, a threshing device 3 for threshing the harvested culms, a harvesting and conveying section 4 provided in front of the threshing device 3 for harvesting multiple rows of planted culms, joining the harvested culms together and conveying them toward the threshing device 3, a driving section 5 provided adjacent to the harvesting and conveying section 4 and covered by a cabin 5a, a grain tank 6 provided adjacent to the threshing device 3 for storing grains after threshing, an unloader 7 provided at the rear of the grain tank 6 for discharging grains from the grain tank 6, and a dust exhaust fan 10 provided at the rear of the threshing device 3 for discharging dust to the outside.

[0026] The threshing device 3 is equipped with a handling drum 31 that rotates around an axis extending in the fore-and-aft direction of the body, a feed chain 32 provided on the left side of the threshing device 3 for clamping and transporting the base of the harvested stalks, a shaking sorting device 33 provided at the bottom of the threshing device 3 for shaking and sorting the harvested stalks, a winnowing machine 34 provided at the bottom of the threshing device 3 for wind-sorting the harvested stalks, and, behind the winnowing machine 34, from the front, a first screw 35 for transporting the first grains in the left-right direction, and a second screw 36 for transporting the second grains in the left-right direction.

[0027] An engine E is provided below the driving unit 5. The power of the engine E is transmitted to the reaping and conveying unit 4 via a speed change device (not shown). The power of the engine E is also transmitted via the speed change device to the threshing drum 31, the winnower 34, the first screw 35, the second screw 36, and the dust exhaust fan 10, in this order, via sprockets and a belt BL.

[0028] [Harvesting and conveying section] In Fig. 2, a junction J where multiple rows of harvested culms join is shown. As shown in Figs. 1 and 2, the harvesting and conveying unit 4 includes multiple weeding tools (not shown) for weeding the planted culms, multiple lifting devices 42 for lifting the planted culms, a cutting blade 43 for cutting the planted culms, multiple raking packers (not shown) for raking in the base of the harvested culms, an upstream conveying device 44 for conveying the harvested culms from the upstream side of the conveying direction of the junction J to the downstream side of the conveying direction, a downstream conveying device 45 for conveying the multiple harvested culms that have joined together downstream of the conveying direction of the junction J, a harvesting frame 46, and a weeding rod 47 that extends from the side of the harvesting and conveying unit 4 to the outside of the machine body to weed the unharvested culms and suppress contact of the unharvested culms with the machine body.

[0029] 3, the reaping and conveying unit 4 is supported by a hydraulic cylinder 41. As a result, the reaping and conveying unit 4 can swing around an axis X1 extending along the left-right direction of the machine body by extension and contraction of the hydraulic cylinder 41. In other words, the reaping and conveying unit 4 can swing between a reaping position where reaping of planted culms is performed and a non-reaping position where reaping of planted culms is not performed.

[0030] [Harvesting frame] As shown in Figures 2 and 3, the cutting frame 46 includes a grass dividing frame 46a, a cutting shaft case 46b, a cutting drive case 46c, and a raising drive shaft case 46d.

[0031] The grass dividing frame 46a supports the grass dividing tool. A plurality of grass dividing frames 46a are provided corresponding to the plurality of grass dividing tools. The cutting shaft case 46b can swing around the axis X1. The cutting drive case 46c is connected to the front end of the cutting shaft case 46b and extends along the left-right direction of the machine body. The raising drive shaft case 46d is erected at the left end of the cutting drive case 46c. The cutting shaft case 46b, the cutting drive case 46c and the raising drive shaft case 46d are provided with shafts and the like for transmitting power to each part of the cutting and conveying section 4.

[0032] [Upstream conveying device] As shown in FIG. 2, the upstream conveying device 44 includes a left conveying device 44a and a right conveying device 44b.

[0033] The left conveying device 44a is configured to convey the two left-side reaped stalks. Specifically, the left conveying device 44a has a plurality of upper and lower endless rotating bodies around which a protruding chain is wound, and a plurality of upper and lower guide members that guide the reaped stalks.

[0034] The bases of the two harvested culms on the left side are clamped and transported by the lower one of a plurality of upper and lower endless rotating bodies and the lower one of a plurality of upper and lower guide members.

[0035] In addition, the tips of the two harvested stalks on the left side are clamped and transported by the upper endless rotating body of the multiple endless rotating bodies and the upper guide member of the multiple upper and lower guide members.

[0036] The right conveying device 44b is configured to convey the two right-side reaped stalks. Specifically, the right conveying device 44b has a plurality of upper and lower endless rotating bodies around which a protruding chain is wound, and a plurality of upper and lower guide members that guide the reaped stalks.

[0037] The bases of the two harvested culms on the right side are clamped and transported by the lower of multiple upper and lower endless rotating bodies and the lower of multiple upper and lower guide members.

[0038] Additionally, the tips of the two right-hand harvested stalks are clamped and transported by the upper third endless rotating body 17 of the upper and lower multiple endless rotating bodies and the upper guide member of the upper and lower multiple guide members.

[0039] [Downstream conveying device] As shown in Figures 2 and 3, the downstream conveying device 45 includes a retrieval depth conveying device 45a, a supply conveying device 45b, and a tip locking conveying section 45c. The retrieval depth conveying device 45a is supported by a cutting shaft case 46b. The tip locking conveying section 45c is supported by a lifting drive shaft case 46d.

[0040] The threshing depth conveying device 45a is configured to take over the base of the harvested stalk from the left conveying device 44a and the right conveying device 44b and clamp and convey it to the supply conveying device 45b. The threshing depth conveying device 45a can swing up and down around an axis perpendicular to the conveying path R1 along which the harvested stalk is conveyed. The threshing depth is adjusted by the threshing depth conveying device 45a swinging up and down.

[0041] The supplying and conveying device 45b is configured to take over the base of the harvested culms from the handling depth conveying device 45a and clamp and convey them to the feed chain 32. The supplying and conveying device 45b is disposed upstream of the feed chain 32 in the conveying direction. The supplying and conveying device 45b has a second endless rotating body 15 around which a chain with protrusions is wound, and a rod-shaped second guide member 16 that guides the harvested culms. As a result, the base of the harvested culms is clamped and conveyed by the second endless rotating body 15 and the second guide member 16.

[0042] The tip retaining and conveying section 45c is provided opposite the third endless rotating body 17 in the right conveying device 44b, and has a rod-shaped third guide member 18 that guides the tips of the harvested stalks. As a result, the third endless rotating body 17 and the third guide member 18 clamp and convey the tips of the harvested stalks.

[0043] [Handling depth conveying device] 2 and 4, the handling depth conveying device 45a of the downstream conveying device 45 has a first endless rotating body 8 (corresponding to the "endless rotating body" in the claims) around which a chain with protrusions is wound, and a first guide member 9 (corresponding to the "guide member" in the claims) that is provided opposite to a portion of the first endless rotating body 8 on the conveying path R1 side and guides the base of the harvested culms. With the above configuration, the base of the harvested culms is clamped and conveyed by the first endless rotating body 8 and the first guide member 9.

[0044] The portion of the first endless rotating body 8 on the side of the conveying path R1 that transports the harvested stalks is located on the outside of the body (outside in the left-right direction of the body, on the left side in this embodiment), and the portion of the first endless rotating body 8 on the side of the return path R2 that does not transport the harvested stalks is located on the inside of the body (inside in the left-right direction of the body, on the right side in this embodiment).

[0045] With the above configuration, the tips of the two left-side reaped culms engaged and transported by the left transport device 44a and the tips of the two right-side reaped culms engaged and transported by the right transport device 44b join at the joining point J. The joined tips of the reaped culms are engaged and transported by the third endless rotating body 17 and the third guide member 18 and supplied to the threshing device 3.

[0046] In addition, the bases of the two left-side harvested culms clamped and transported by the left transport device 44a and the bases of the two right-side harvested culms clamped and transported by the right transport device 44b join at the joining point J. The bases of the joined harvested culms are clamped and transported by the handling depth transport device 45a and the supply transport device 45b, and are finally supplied to the feed chain 32 by the supply transport device 45b.

[0047] [First guide member] 4, the first guide member 9 extends along the conveying path R1. The first guide member 9 has a base-end guide member 91 on the base end side, a free-end guide member 92 on the free end side that is separate from the base-end guide member 91, and a connecting mechanism 93 that connects the base-end guide member 91 and the free-end guide member 92.

[0048] [Base end guide member] 5 and 7, the base end side end of the base end guide member 91 is connected to the lower part of the first endless rotating body 8. The base end side guide member 91 is curved in a U shape from the lower part toward the tip side of the first endless rotating body 8. The base end side guide member 91 has a fixed member FX located at the end on the free end side guide member 92 side.

[0049] [Free end guide member] 5 and 7, the free end of the free end guide member 92 faces the transport path R1 side of the first endless rotating body 8. The free end guide member 92 extends from the connecting portion with the base end guide member 91 toward the first endless rotating body 8.

[0050] 5 and the like show the approaching / moving direction D1 relative to the first endless rotating body 8 and the conveying direction D2 of the harvested stumps. The free-end guide member 92 is provided with a pressing member 92a located at the end on the free end side for pressing the base of the harvested stump being conveyed, a movable member MV located at the end on the base-end guide member 91 side and movable in the approaching / moving direction D1 relative to the fixed member FX, a plurality of rods 92b extending in the approaching / moving direction D1 relative to the first endless rotating body 8, and springs 92c provided along the outer periphery of the rods 92b.

[0051] The rod 92b passes through the moving member MV. The moving member MV is slidable in the direction in which the rod 92b extends. An end of the rod 92b on the first endless rotating body 8 side is connected to the pressing member 92a.

[0052] The spring 92c is a compression coil spring. The spring 92c is provided between a first flange-shaped member 92d fixed to the outer periphery of the rod 92b and a second flange-shaped member 92e located in a direction away from the first endless rotating body 8 with respect to the first flange-shaped member 92d and slidable along the outer periphery of the rod 92b. The second flange-shaped member 92e is fixed to the moving member MV.

[0053] 8, when the free end guide member 92 slides in a direction away from the first endless rotating body 8, the gap between the first flange-shaped member 92d and the second flange-shaped member 92e narrows (separated state S2). This causes the spring 92c to contract. This causes the moving member MV to be biased in a direction away from the first endless rotating body 8 by the spring 92c.

[0054] With the above configuration, the connection state between the base end side guide member 91 and the free end side guide member 92 is released by the connection mechanism 93, so that the free end side guide member 92 can be switched between a usage state S1 and a separated state S2 in which the free end side guide member 92 is further away from the first endless rotating body 8 than in the usage state S1. In this embodiment, the free end side guide member 92 is switched from the usage state S1 to the separated state S2 by the biasing force of the spring 92c.

[0055] As shown in Figure 7, in the usage state S1, the pressing member 92a is in a position overlapping with the first endless rotating body 8 when viewed from a direction perpendicular to both the approaching / moving away direction D1 relative to the first endless rotating body 8 and the conveying direction D2 of the harvested stalks in the downstream conveying device 45.

[0056] As shown in Figure 8, in the separated state S2, the pressing member 92a is in a position that does not overlap with the first endless rotating body 8 when viewed from a direction perpendicular to both the approaching / moving direction D1 relative to the first endless rotating body 8 and the conveying direction D2 of the harvested stalks in the downstream conveying device 45.

[0057] [Moving member] As shown in Figures 5 and 7, the movable member MV includes a first plate-shaped member MV1 extending along the conveying path R1 of the downstream conveying device 45, a second plate-shaped member MV2 arranged at a distance from the first plate-shaped member MV1 in a direction away from the first endless rotating body 8 and facing the first plate-shaped member MV1, and a free end connecting member MV3 connecting the first plate-shaped member MV1 and the second plate-shaped member MV2.

[0058] The movable member MV is in an inverted U-shape (a U-shape that opens downwards). Specifically, a first plate-shaped member MV1 hangs down from an end of the plate-shaped free-end side connecting member MV3 on the first endless rotating body 8 side. Also, a second plate-shaped member MV2 hangs down from an end of the free-end side connecting member MV3 on the opposite side to the first plate-shaped member MV1. The free-end side connecting member MV3 is plate-shaped. The first plate-shaped member MV1, the second plate-shaped member MV2 and the free-end side connecting member MV3 have the same size in the conveying direction D2.

[0059] [Fixing member] As shown in Figures 5 and 7, the fixed member FX includes a third plate-shaped member FX1 extending along the conveying path R1 of the downstream conveying device 45, a fourth plate-shaped member FX2 opposed to the third plate-shaped member FX1 and spaced apart in a direction away from the first endless rotating body 8 relative to the third plate-shaped member FX1, and a base-end connecting member FX3 connecting the third plate-shaped member FX1 and the fourth plate-shaped member FX2.

[0060] The fixing member FX is U-shaped (U-shaped with an upward opening). Specifically, a third plate-shaped member FX1 stands up from an end of the plate-shaped base-end connecting member FX3 on the first endless rotating body 8 side. A fourth plate-shaped member FX2 stands up from an end of the base-end connecting member FX3 on the opposite side to the third plate-shaped member FX1. The base-end connecting member FX3 is plate-shaped. The third plate-shaped member FX1, the fourth plate-shaped member FX2 and the base-end connecting member FX3 have the same size in the conveying direction D2.

[0061] The movable member MV is placed on top of the fixed member FX. The movable member MV is larger in size in the conveying direction D2 than the fixed member FX. Specifically, the fixed member FX is located between a pair of rods 92b.

[0062] The first plate-shaped member MV1 is located between the third plate-shaped member FX1 and the fourth plate-shaped member FX2. As shown in Figures 7 and 8, when the free-end-side guide member 92 is switched from the use state S1 to the separated state S2, the first plate-shaped member MV1 moves in a direction approaching the fourth plate-shaped member FX2.

[0063] [Regulation member] 5, 7 and 8, the fixed member FX is provided with a regulating member 11 that regulates the first plate-shaped member MV1 from contacting the fourth plate-shaped member FX2 in the separated state S2. The regulating member 11 is provided with a gap in the conveying direction D2 of the harvested stalks in the downstream conveying device 45 and is composed of a plurality of plate-shaped members extending in the approaching / separating direction D1. Specifically, the regulating member 11 is fixed to the fourth plate-shaped member FX2 and the base-end connecting member FX3, and extends from the connection portion between the fourth plate-shaped member FX2 and the base-end connecting member FX3 toward the third plate-shaped member FX1 along the base-end connecting member FX3.

[0064] As shown in FIG. 7, the distance L1 from the connection portion of the regulating member 11 with the base end connecting member FX3 to the end portion is smaller than the distance L2 from the connection portion of the fourth plate-shaped member FX2 with the base end connecting member FX3 to the end portion.

[0065] A support member 47a that swingably supports the grass dividing rod 47 is provided in the direction away from the first endless rotating body 8 of the free end guide member 92. Since the movement distance of the moving member MV is reduced by the regulating member 11, the free end guide member 92 does not abut against the support member 47a in the separated state S2. This makes it difficult for the grass dividing rod 47 to be damaged.

[0066] [Connection mechanism] As shown in Figure 6, the connecting mechanism 93 is composed of a plurality of pins 93a provided on the fixed member FX and extending in the approaching / moving away direction D1, a plurality of holes 93b provided on the movable member MV through which the pins 93a are inserted, and a retaining member 93c provided on the movable member MV to prevent the pins 93a, which are inserted into the holes 93b, from coming out of the holes 93b.

[0067] The pin 93a is provided on the fourth plate-shaped member FX2, and extends in a direction away from the first endless rotating body 8. The hole 93b is provided on the second plate-shaped member MV2, and is located opposite the pin 93a.

[0068] The retaining member 93c is provided on the second plate-like member MV2 and can swing around an axis X2 extending along the approaching / separating direction D1. The retaining member 93c is provided with a plurality of engagement grooves that engage with the pin 93a. The retaining member 93c is swung clockwise around the axis X2, and the downwardly opening engagement grooves engage with the pin 93a from above, preventing the pin 93a from coming off the hole 93b. This causes the moving member MV to be fixed to the fixed member FX against the biasing force of the spring 92c. In other words, the base end side guide member 91 and the free end side guide member 92 are in a connected state. As a result, the free end side guide member 92 is maintained in the use state S1 by the connecting mechanism 93.

[0069] Furthermore, with the engagement groove engaged with the pin 93a, the retaining member 93c is swung counterclockwise around the axis X2, and the engagement groove is disengaged from the pin 93a. In other words, the connection between the base end guide member 91 and the free end guide member 92 is released. This allows the free end guide member 92 to be switched from the use state S1 to the separated state S2. The first plate member MV1 comes into contact with the restricting member 11, thereby maintaining the free end guide member 92 in the separated state S2.

[0070] When the connection between the base end guide member 91 and the free end guide member 92 is released, the biasing force of the spring 92c may cause the free end guide member 92 to come into forceful contact with another member located in a direction away from the first endless rotating body 8 relative to the free end guide member 92.

[0071] The regulating member 11 reduces the distance that the movable member MV moves, so that when the connection between the base end side guide member 91 and the free end side guide member 92 is released, the free end side guide member 92 is less likely to come into forceful contact with other members.

[0072] Furthermore, when the base end guide member 91 and the free end guide member 92 are released from their connected state, the biasing force of the spring 92c may cause the first plate member MV1 to come into forceful contact with the fourth plate member FX2.

[0073] Since the first plate-shaped member MV1 abuts against the regulating member 11 but not against the fourth plate-shaped member FX2, when the connection between the base end guide member 91 and the free end guide member 92 is released, the first plate-shaped member MV1 is less likely to come into forceful contact with the fourth plate-shaped member FX2.

[0074] [Cover member] As shown in Figs. 1 and 3, the reaping and conveying section 4 is provided with a plurality of cover members C to prevent mud from the field, discarded straw left behind, and the like from entering from the outside of the machine body.

[0075] Side covers 19 are provided on the outer lateral sides of the lifting devices 42 on both the left and right sides. A resin first cover member C1 serving as the cover member C is provided on each of the left and right side covers 19. Specifically, the first cover member C1 is fixed to the lower part of each of the left and right side covers 19 in a state in which it hangs down from the lower part of each of the left and right side covers 19.

[0076] A resin second cover member C2 serving as the cover member C is provided on the left side cover 19. Specifically, the second cover member C2 is fixed to a support portion of the left side cover 19 in a state in which the second cover member C2 protrudes rearward and downward from the rear portion of the left side cover 19.

[0077] A third cover member C3 is provided on the outer lateral side of the cutting blade 43 on both the left and right sides as the cover member C. The third cover member C3 has a shape that bulges outward from the machine body in a plan view. The third cover member C3 is fixed to the grass dividing frame 46a.

[0078] 4, a fourth cover member C4 is provided as a cover member C on a portion of the first endless rotating body 8 on the return path R2 side where the harvested stalks are not transported and on the lower portion of the first endless rotating body 8. The fourth cover member C4 is fixed to the first endless rotating body 8.

[0079] As shown in FIG. 4, a fifth cover member C5 as a cover member C is provided on a portion of the lower endless rotating body of the left conveying device 44a on the return path side where the harvested stalks are not conveyed.

[0080] [Linkage parts] 9, a linking member 13 capable of switching the feed chain clutch 12 between a transmission state and a disconnection state is provided below the rear portion of the feed chain 32. The linking member 13 has a first arm 13a and a second arm 13b connected to the first arm 13a.

[0081] 10, in the left-right direction of the machine body, the first arm 13a and the second arm 13b are located on the inside of the machine body of the belt BL that is wound around the input shaft of the dust exhaust fan 10 and the input shaft of the second screw 36. This makes it possible to replace the belt BL during maintenance work without removing the first arm 13a.

[0082] The first arm 13a and the second arm 13b are connected to be able to swing relative to each other. The first arm 13a is connected to a release mechanism 14 that releases the transmission state of the feed chain clutch 12. When a wire 14a of the release mechanism 14 is pulled, the first arm 13a swings clockwise around the axis X3 in a left side view. As a result, the rod-shaped member 13c connected to the first arm 13a is inserted into the feed chain clutch 12, and the feed chain clutch 12 is disengaged.

[0083] When wire 14a is loosened, first arm 13a swings counterclockwise around axis X3 as viewed from the left side due to the biasing force of the spring, whereby rod-shaped member 13c connected to first arm 13a is pulled out of feed chain clutch 12, and feed chain clutch 12 enters a transmission state.

[0084] [Another embodiment] The present invention is not limited to the above-described embodiment. For example, the following other embodiments may be used. In the following other embodiments, the same components as those in the above-described embodiment are denoted by the same numbers and symbols as those in the above-described embodiment.

[0085] (1) In the above embodiment, the first guide member 9 has a base end guide member 91, a free end guide member 92 on the free end side, and a connecting mechanism 93. Without being limited to this, the second guide member 16 may have a base end guide member 91, a free end guide member 92 on the free end side, and a connecting mechanism 93. In this case, the "endless rotating body" recited in the claims corresponds to at least one of the first endless rotating body 8 and the second endless rotating body 15. Also, the "guide member" recited in the claims corresponds to at least one of the first guide member 9 and the second guide member 16.

[0086] (2) The connecting mechanism 93 may be composed of a plurality of pins 93a provided on the movable member MV, holes 93b provided on the fixed member FX, and a retaining member 93c provided on the movable member MV.

[0087] Specifically, the pin 93a may be provided on the first plate-shaped member MV1 and extend toward the first endless rotating body 8. The hole 93b may be provided on the third plate-shaped member FX1. The retaining member 93c may be provided on the first plate-shaped member MV1.

[0088] (3) There may be one pin 93a and one hole 93b.

[0089] (4) In the above embodiment, the connecting mechanism 93 is composed of the pin 93a, the hole 93b, and the retaining member 93c. However, the connecting mechanism 93 may have other configurations. For example, the connecting mechanism 93 may be composed of a bolt and a nut.

[0090] (5) In the above embodiment, the moving member MV is in an inverted U-shape. However, the moving member MV may have another shape. For example, the moving member MV may be H-shaped. Furthermore, the free end side connecting member MV3 does not have to be plate-shaped.

[0091] (6) In the above-described embodiment, the fixed member FX is U-shaped. However, the movable member MV may have another shape. For example, the fixed member FX may be H-shaped. Furthermore, the base-end connecting member FX3 does not have to be plate-shaped.

[0092] (7) The restricting member 11 may be provided on the movable member MV. The restricting member 11 may be fixed to the first plate-shaped member MV1 and the free-end connecting member MV3, and may extend from a connection portion between the first plate-shaped member MV1 and the free-end connecting member MV3 toward the second plate-shaped member MV2 along the free-end connecting member MV3.

[0093] (8) The restricting member 11 may be made up of one plate-shaped member, or may be made up of three or more plate-shaped members.

[0094] (9) The restricting member 11 does not have to be plate-shaped. For example, the restricting member 11 may be a spring, a box-shaped member, or a rod-shaped member.

[0095] (10) In the above embodiment, the free end guide member 92 includes the pressing member 92a, the moving member MV, a plurality of rods 92b, and the spring 92c. This is not limiting, and the free end guide member 92 does not necessarily include the spring 92c. In this case, the moving member MV is fixed to the rod 92b. As a result, the free end guide member 92 may be switched from the use state S1 to the separated state S2 by manual operation, so that the moving member MV may move in a direction away from the first endless rotating body 8.

[0096] (11) In the above-described embodiment, in the separated state S2, the pressing member 92a is in a position that does not overlap with the first endless rotating body 8 when viewed from a direction perpendicular to both the approaching / separating direction D1 and the conveying direction D2. However, the present invention is not limited to this, and the pressing member 92a may be in a position that overlaps with the first endless rotating body 8 when viewed from a direction perpendicular to both the approaching / separating direction D1 and the conveying direction D2 as long as the pressing member 92a is in a position that is farther away from the first endless rotating body 8 than in the use state S1.

[0097] (12) The configurations disclosed in the above-described embodiments may be applied in combination with configurations disclosed in other embodiments, provided that no inconsistency arises. In addition, the embodiments disclosed in this specification are merely examples, and the present invention is not limited thereto. The configurations may be modified as appropriate within the scope of the purpose of the present invention. [Industrial Applicability]

[0098] The present invention can be used in a head-feeding combine harvester. [Explanation of symbols]

[0099] 3: Threshing equipment 4: Harvesting and transport section 45: Downstream conveying device 8: First endless rotating body (endless rotating body) 9: First guide member (guide member) 91: Base end guide member FX: Fixed member FX1: Third plate member FX2: Fourth plate member FX3: Base end connecting member 92: Free end guide member MV: Moving parts MV1: First plate member MV2: Second plate member MV3: Free end connecting member 93:Connection mechanism 93a: Pin 93b :hole 93c: Anti-slip material 11: Regulating member 15: Second endless rotating body (endless rotating body) 16: Second guide member (guide member) D1: Approach / reverse direction D2: Transport direction J: Confluence L1: distance L2: distance R1: Transport route S1: Usage status S2: Separated state

Claims

1. a threshing device for threshing the harvested stalks; A reaping and conveying unit is provided in front of the threshing device, which reaps a plurality of planted culms, joins the reaped culms, and conveys them toward the threshing device. The reaping and conveying section includes a downstream conveying device that conveys the joined reaping stalks downstream in the conveying direction from the joining section where the reaping stalks join, The downstream conveying device has an endless rotating body whose portion on the conveying path side is located outside the machine body, and a guide member that is provided opposite to the portion of the endless rotating body on the conveying path side and guides the harvested stalks, the guide member includes a base end guide member on a base end side, a free end guide member on a free end side that is separate from the base end guide member, and a connecting mechanism that connects the base end guide member and the free end guide member, the connection between the base end side guide member and the free end side guide member is released by the connection mechanism, so that the free end side guide member can be switched between a use state and a separated state in which the free end side guide member is further away from the endless rotating body than in the use state, the base end guide member includes a fixed member located at an end portion on the free end guide member side, the free-end guide member is provided with a movable member that is located at an end portion of the base-end guide member side and whose position relative to the fixed member is movable in a direction toward or away from the endless rotating body, the moving member includes a first plate-like member extending along a transport path of the downstream transport device, a second plate-like member opposed to the first plate-like member and spaced apart from the first plate-like member in a direction away from the endless rotating body, and a free end side connecting member connecting the first plate-like member and the second plate-like member, the fixed member includes a third plate-like member extending along a transport path of the downstream transport device, a fourth plate-like member opposed to the third plate-like member and spaced apart from the third plate-like member in a direction away from the endless rotating body, and a base-end connecting member connecting the third plate-like member and the fourth plate-like member, the first plate-shaped member is located between the third plate-shaped member and the fourth plate-shaped member, and moves in a direction approaching the fourth plate-shaped member when the free-end-side guide member is switched from the use state to the separated state, At least one of the movable member and the fixed member is provided with a restricting member that restricts the first plate-shaped member from contacting the fourth plate-shaped member in the separated state.

2. The head-feeding combine harvester according to claim 1 , wherein the regulating member is provided on the fixing member.

3. A self-feeding combine as described in claim 1, wherein the regulating member is arranged with a gap in the transport direction of the harvested stalks in the downstream transport device and is composed of a plurality of plate-shaped members extending in the direction approaching and moving away from the endless rotating body.

4. A self-detaching combine harvester as described in claim 3, wherein the regulating member is fixed to the fourth plate-shaped member and the base end connecting member, and extends along the base end connecting member from the connection portion between the fourth plate-shaped member and the base end connecting member toward the third plate-shaped member.

5. The self-detaching combine harvester of claim 1, wherein the connecting mechanism is composed of a pin provided on one of the movable member or the fixed member and extending in the direction toward or away from the endless rotating body, a hole provided on the other of the movable member or the fixed member through which the pin is inserted, and a slip-out prevention member that prevents the pin inserted into the hole from slipping out of the hole.

6. A head-detaching combine as described in claim 4, wherein the distance from the connection portion of the regulating member with the base end connecting member to the end portion is smaller than the distance from the connection portion of the fourth plate-shaped member with the base end connecting member to the end portion.

7. A self-feeding combine as described in claim 1, wherein, in the separated state, the free end guide member is in a position that does not overlap with the endless rotating body when viewed from a direction perpendicular to both the approaching / moving direction relative to the endless rotating body and the transporting direction of the harvested stalks in the downstream transporting device.

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