JP4289622B2 - Self-decomposing combine grain transport structure - Google Patents

Description

  The present invention relates to a corn straw transport structure for a self-removing combine.

For example, as shown in Patent Document 1, the cereal conveyance structure of the self-decomposing combine includes a terminal end portion of a supply conveyance device provided in the mowing unit and a start end portion of a feed chain equipped in the threshing device. A device is known in which an auxiliary conveyance device is provided in which a conveyance chain is vertically wound and wound at a predetermined position between the two.
JP 2001-37319 A

  The above cereal conveyance structure exhibits the function of placing the cereal cocoon in a lying position that has reached the end of the supply conveyance device in the cutting unit on the auxiliary conveyance device and reliably feeding it to the feed chain. There was room for improvement in workability in the case of performing so-called pillow threshing work, in which hand-harvested corn straw was manually inserted to form a headland at the end. In other words, because the feed chain starting end and the auxiliary transport device are lined up at the manually inserted supply location, when the feed chain acts on the manually inserted and fed cereal, it is supplied to the threshing device in advance of the stock, If the auxiliary conveying device acts on the cedar that was manually inserted and supplied first, it would be supplied to the threshing device in advance of the tip, and if it was manually inserted and supplied, the attitude of the cereal supply to the threshing device would change and the grain稈 There was a risk of clogging at the supply port.

  In addition, since the conventional structure is configured to receive power from the feed chain, when applied to a model having a specification in which the conveyance speed of the supply conveyance device is changed, the cereal inheritance from the supply conveyance device to the auxiliary conveyance device is performed. There is a possibility that conveyance disturbance due to the difference in conveyance speed may occur, and if it is supplied to the feed chain in a disturbed posture, clogging at the cereal supply port of the threshing device is likely to occur.

  The present invention has been made paying attention to such a point, and is mainly intended to enable a pillow threshing operation to be easily performed, and also to supply and transport a cutting unit during harvesting traveling. It is another object to be able to smoothly carry out the cereal transfer to the auxiliary conveying device.

A first aspect of the present invention is an auxiliary transport device in which a transport chain is vertically wound and wound at a predetermined position between a terminal end portion of a feed transport device provided in a mowing unit and a start end portion of a feed chain equipped in a threshing device. Is a self-decomposing combine grain transporting structure,
In the conveying path formed in the upper part of the auxiliary conveying device, a circular guide rail having a circular cross section facing the conveying chain from above is arranged so that the stock side of the conveying cereal is sandwiched between the conveying chain and the guide rail. together constitute, characterized in that the vertical plate-like conveyance guide which protrudes above the conveying protrusion of the conveyor chain is erected along the guide rails.

  According to the above configuration, during normal harvesting travel, the cereals that have been transported to the terminal end of the feed transport device are sandwiched between the transport chain and the guide rail in the auxiliary transport device, sent backward, and delivered to the feed chain. It is. In addition, in pillow threshing work, hand-harvested pestle is placed on the guide rail in the auxiliary transport device and slid on the transport guide of the guide rail without being caught by the transport protrusion of the transport chain, so It can be fed into the start end of the feed chain while adjusting.

Therefore, according to the first invention, during harvesting travel, the cereals can be smoothly supplied from the supply conveyance device to the feed chain in the cutting unit via the auxiliary conveyance device, and in the pillow threshing operation, the auxiliary conveyance is performed. The guide rail of the apparatus can be used as a mere cereal receiving member that temporarily puts the cereal and arranges the posture, and the pillow threshing work can be easily performed.
According to a second invention, in the first invention,
An inclined portion inclined obliquely rearward and upward is formed at the front end portion of the conveyance guide.

According to a third invention, in the first or second invention,
The auxiliary conveyance device is configured to be driven in conjunction with the transmission system of the mowing unit.

  According to the above configuration, when the conveyance speed of the supply conveyance device in the cutting unit is changed depending on conditions such as the field and the growth situation of the crop, the speed of the auxiliary conveyance device also changes in synchronization with this. Grain transfer to the auxiliary transport device is performed in an orderly manner.

  Further, in the pillow threshing operation, the auxiliary transport device is also stopped in conjunction with the driving stop of the cutting unit. However, since the transport protrusion of the transport chain in this auxiliary transport device is hidden by the transport guide, the transport is stopped. The above-mentioned effect of the first invention can be achieved while the cedar posture can be adjusted by sliding and moving without hooking the cereal into the protrusions, and the cereal conveyance can be carried out favorably in the harvest traveling operation. It can be demonstrated accurately.

A fourth invention is the invention according to any one of the first to third inventions,
The mowing unit is equipped with a rail support member that supports a guide rail for holding and conveying the culm in the supply and transport device, and the rail support member supports the front end of the guide rail of the auxiliary transport device. is there.

  According to the above configuration, the number of parts of the rail support structure can be reduced by supporting the guide rail of the supply transport device and the guide rail of the auxiliary transport device with the common rail support member.

A fifth invention is the invention according to any one of the first to fourth inventions,
A cereal guide piece is connected to a bracket that is positioned at the rear end of the auxiliary transport device and on which an idler wheel that winds the transport chain is pivotally supported. It is comprised so that it may overlap from the upper part on the entrance plate projected ahead.

  According to the above configuration, the cereal that has reached the rear end of the auxiliary transport device is prevented from being caught by the transport chain by the idler wheel bracket, and further guided rearward by the cereal guide piece, Therefore, it is possible to reliably feed the cereal into the threshing apparatus without being caught or retained at the terminal end of the auxiliary conveying device.

  FIG. 1 shows an overall side view of the self-removing combine, and FIG. 2 shows an overall plan view thereof. This self-removable combine is connected to a front part of a traveling machine body 2 equipped with a pair of left and right crawler traveling devices 1 and a cutting unit 3 having a plurality of cuttings (in this example, 3 cuttings) is connected to be movable up and down. The airframe 2 has a structure in which an operation unit 4, a threshing device 5, a grain collection tank 6 with an unloader, and the like are mounted.

  The mowing unit 3 is provided with a mowing unit frame 7, and the rear end base of the mowing unit frame 7 is centered on a support point 8 erected on the front end of the traveling machine body 2 with a lateral fulcrum P as a center. It is connected and supported so as to be able to swing up and down, and is driven to swing up and down by a hydraulic cylinder 9. The mowing part frame 7 is constituted by a cylindrical transmission case extending forward and downward from the fulcrum P, and the mowing part frame 7 causes the planted culm to be raised in a predetermined mowing posture. Device 10, clipper-type cutting device 11 for cutting the raised planted culm, front transport belt 12 for lightly scraping the harvested cereal to the rear, rotary packer 13 for scraping and transporting the stock of the harvested cereal to the rear , A pair of left and right head locking transport mechanisms 14 and 15 and a stock holding and transporting mechanism 16 and 17 for joining the harvested cereals at one place, a supply and transport device 18 for transporting the joined cereals upward and rearward, etc. Is supported.

  The supply and transport device 18 includes a rearward extension of the tip locking transport mechanism 15 located on the right side of the machine body, a movable stock holding and transport mechanism 19, and a horizontally-turned relay transport mechanism 20. The culm passing position to the feed chain 21 provided on the lateral outer surface of the threshing device 5 by swinging the stock holding and transporting mechanism 19 up and down around the front fulcrum and changing the transport end position in the cocoon length direction A handling depth adjustment function is provided for changing the cocoon insertion length into the threshing device 5 by changing the cocoon length in the cocoon length direction. Further, an auxiliary conveyance device 22 is disposed at a predetermined position between the terminal end of the supply conveyance device 18 and the start end portion of the feed chain 21.

  FIG. 4 shows an outline of the transmission structure in this combine. As shown in the figure, a tension type main clutch 28 is attached to a main transmission 27 comprising a hydraulic continuously variable transmission capable of switching between forward and reverse rotations of a part of the power of an engine 26 disposed below the seat of the driving unit 4. And the other part of the power of the engine 26 is transmitted to the threshing device 5 via a tension-type threshing clutch 29 and mounted on the threshing device 5 such as the handling cylinder 23 and the feed chain 21. All the mechanisms are driven at a constant speed. Then, the shift output of the main transmission device 27 is input to the mission case 30 and branched into a traveling system and a working system, and the power of the traveling system is gear-shifted into a plurality of stages in the mission case 30 and then the left and right crawler traveling devices. 1 is transmitted. Further, the power of the work system taken out from the transmission case 30 via the PTO shaft 31 is transmitted only to the cutting part 3 via the one-way clutch 32 only for the normal rotation power.

  A base portion of the cutting frame 7 is provided with a base end boss portion 7a that is horizontally long and concentric with the fulcrum P, and this base end boss portion 7a is supported on the support base 8 so as to swing up and down around the fulcrum P. At the same time, the right end of the counter shaft 33 inserted and supported by the base end boss portion 7 a and the PTO shaft 31 are belt-coupled via a belt tension type mowing clutch 34, and the power transmitted to the counter shaft 33 is used. The pulling device 10, the cutting device 11, the front conveyor belt 12, the rotary packer 13, the tip locking and conveying mechanisms 14 and 15, the stock holding and conveying mechanisms 16 and 17, and the supply and conveying apparatus 18 It is designed to be driven at a synchronized speed.

  As shown in FIGS. 5 and 6, the auxiliary transport device 22 is provided with a protrusion that is wound in the vertical direction between the relay transport mechanism 20 located at the end of the supply transport device 18 and the start end of the feed chain 21. , And a guide rail 24 disposed so as to face the upper side thereof, and is driven at a speed synchronized with the supply and conveyance device 18, and reaches the rear portion of the relay conveyance mechanism 20. The stock holder of the cereal rice cake is sandwiched between the transport chain 23 and the guide rail 24 and sent backward, and is also fed to the payout bar 34 that is cantilevered from the stock base sandwich transport mechanism 19 toward the rear. The stock base portion is paid out laterally and guided to the top end of the feed chain 21. As shown in FIG. 3, the front end of the feed chain 21 is covered with a wide guide cover 35, and the cereal stock that has been guided to be swung up by the payout bar 34 can be smoothly transferred to the feed chain 21 conveyance area. It is configured to guide you.

The detailed structure of the auxiliary transport device 22 will be described below. A speed reduction case 41 is provided inside the fuselage in the vicinity of the front end portion of the feed chain 21, and a sprocket 43 of the input shaft 42 provided at the front portion of the speed reduction case 41 and a sprocket 44 provided at the left end portion of the counter shaft 33, In addition, the transmission chain 45 is wound around, and a tie toner 46 made of a belt-like spring plate material is pressed against the lower path on the slack side of the transmission chain 45. One end of the tie toner 46 is fixedly connected to the transport frame 47 in a predetermined rearward cantilever posture, and an operation portion 46a is bent at the free end thereof, and the operation portion 46a is bent downward with a finger. Thus, the transmission chain 45 can be loosened.

  Further, an output shaft 48 that is gear-reduced and linked to the input shaft 42 is supported at the rear portion of the deceleration case 41, and a drive sprocket 49 of the auxiliary transport device 22 is connected to the output shaft 48. The transport chain 23 is wound in an inverted triangular shape across the lower drive sprocket 49 and the front and rear idler wheels 50, 51 arranged above, and a bracket 52 that supports the rear idler wheel 51 is The planar shape is formed in a U-shape and is extended rearward so as to hide the rear end portion of the transport chain 23 from the side surface, so that the transport chain 23 is prevented from being caught by the transport chain 23. Further, an inlet plate for accepting and accepting the cereals in which the cereal guide piece 52a protruding rearward from the rear end of the bracket 52 extends forward from the lower part of the cereal supply port on the front surface of the threshing device 5. 53 is arranged so as to overlap from above in a side view, so that the cereal feed into the inlet plate 53 is reliably performed.

Further, from the guide rail 24 in the auxiliary feeder 22 are erected along a vertical plate-like conveyance guide 25 is a guide rail 24 which projects above the conveying projections 23a of the conveyor chain 23, the conveyance guide 25 An inclined portion 25 </ b> A is formed at the front end portion. The conveyance guide 25 is used as a temporary table for the chopped cereals in the pillow threshing operation in which the hand-cut cereals are manually inserted and supplied to the starting end of the feed chain 21. That is, in the pillow threshing operation, since the traveling is stopped and the driving of the cutting unit 3 is stopped, the auxiliary transfer device 22 driven by the power from the cutting unit 3 is also stopped, but the stopped transfer Since the transport protrusion 23a of the chain 23 is concealed by the transport guide 25 of the guide rail 24, the manually inserted cereal rice cake placed on the guide rail 24 is slid on the transport guide 24a without being caught on the transport protrusion 24a. It can be fed into the starting end of the feed chain 21 while adjusting the grain posture.

  Further, as shown in FIG. 7, an oiling nozzle 66 directed to the drive sprocket 49 is provided in the winding loop of the transport chain 23 in the auxiliary transport device 22, and is not shown by a switch operation in the operation unit 4. The lubrication oil sent to the lubrication nozzle 66 via the lubrication tube 67 is supplied to the transport chain 23 via the drive sprocket 49. The oil pump is also connected to an oil nozzle (not shown) installed at various locations where lubrication is required in the cutting part 3.

  The auxiliary conveyance device 22 and the deceleration case 41 are integrated into a unit shape via the conveyance frame 47, and the support arm 55 of the tension roller 54 that is biased and pressed by the conveyance chain 23 of the auxiliary conveyance device 22 is also conveyed. Supported by a frame 47, the transport frame 47 of the auxiliary transport unit is connected and supported by a support base 8 installed upright at the front portion of the traveling machine body 2.

  Further, an arm-shaped rail support member 57 is fixedly arranged from the front part to the rear part of the cutting part 3, and the relay transport mechanism 20 transports it to the rail base 58 provided at the rear end part of the rail support member 57. A guide rail 20b disposed opposite to the chain 20a is supported so as to be elastically retractable, and a guide rail 24 of the auxiliary transport device 22 is attached to a rear end portion of the rail support member 57. The front end of the guide rail 24 is supported by the support arm 57 so as to be pivotable up and down around the fulcrum q, and is pivoted downward by a spring 59 so that the stock of the cereals inherited from the relay transport mechanism 20 The auxiliary transfer device 22 is elastically held between the transfer chain 23 and the guide rail 24. In addition, the front end part of the guide rail 60 which opposes the front upper part of the feed chain 21 is also pivotally supported by the rear end of the rail support member 57 so that vertical rotation is possible.

  As shown in FIG. 8, the cutting unit 3 configured as described above can swing and swing leftward and outward for inspection and maintenance. That is, as shown in the front view of FIG. 9, the left and right end portions of the base end boss portion 7 a in the cutting portion frame 7 are rotated around the fulcrum P around the left and right bearing portions 61 and 62 provided in the support base 8. It is supported freely. A bearing 61 on the left side of the machine body (right side in FIG. 9) is supported on the support base 8 so as to be pivotable about the longitudinal axis X, and as shown in FIG. In the normal state, the right end portion of the base end boss portion 7a is received and supported by the bearing portion 62 as shown in FIG. As shown in FIG. 10, the bearing unit 61 on the left side of the machine body has a lifting lock corner block 64 that can be rotated via a lateral operation support shaft 63 and a corner block 64 that is swung up and rotated. And a receiving portion 65 to be mounted.

As shown in FIG. 8, in order to swing and release the mowing unit 3 from the normal position toward the front side to the left side of the machine body, first, the angle block 64 for lifting lock with the mowing unit 3 raised. 11a and 11b, after that, as shown in FIG. 11 (b), the cutting portion 3 is lowered and the contact portion 56 formed integrally with the proximal end boss portion 7a is attached to the square block 64. It is put on and prevents the cutting part 3 from being lowered further. Thus, in a state where the lowering is prevented via the corner block 64, the cutting unit 3 is held at a height that is lifted from the ground. In this state, the connection between the cutting frame 7 and the hydraulic cylinder 9 is released. At the same time, the right bearing portion 52 can be opened, and the cutting portion 3 can be swung open about the longitudinal axis X.

Here, it is necessary to release the interlocking between the counter shaft 33 and the auxiliary transport device 22 prior to the turning opening operation of the cutting unit 3. First, a finger is applied to the operation unit 46 a provided at the Tightner free end. The transmission chain 45 is slackened by pulling down to bend the Tightener 46 downward. Next, for example, the transmission chain 45 is removed from the sprocket 44 of the counter shaft 33, and the removed transmission chain 45 is hung on the sprocket 43 of the input shaft 42. Let it hang down. Further, the guide rails 24, 60 are swung up and stored or removed, the guide rail 24, the transport chain 23, the guide rail 60, and the feed chain 21 are unhooked, and then the pivoting release operation of the cutting unit 3 is performed.

Overall side view of self-removing combine Overall plan view of self-removing combine Schematic plan view of the cutting part Transmission system diagram Side view around the auxiliary transport device Plan view around auxiliary transport device Side view of the auxiliary transport device as seen from inside the machine Top view of the state where the mowing part is swiveled open Front view showing the base of the mowing part Side view showing the support structure on the right side of the base in the cutting part frame Side view showing the support structure on the left side of the base in the cutting part frame

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Cutting part 5 Threshing apparatus 18 Supply conveyance apparatus 21 Feed chain 22 Auxiliary conveyance apparatus 23 Conveyance chain 24 Guide rail 25 Conveyance guide
25A Inclined portion 51 idler wheel 52 bracket 52a grain hull guide piece 57 rail support member

Claims (5)

A self-conveying device in which an auxiliary conveying device is provided by rotating the conveying chain vertically at a predetermined position between the terminal end of the feeding conveying device provided in the mowing unit and the starting end of the feed chain equipped in the threshing device. It is a cereal conveyance structure of a demolding combine,
In the conveying path formed in the upper part of the auxiliary conveying device, a circular guide rail having a circular cross section facing the conveying chain from above is arranged so that the stock side of the conveying cereal is sandwiched between the conveying chain and the guide rail. With composition
2. A self-removable combine grain transport structure, wherein a vertical plate-shaped transport guide that protrudes upward from the transport protrusion of the transport chain is provided upright along the guide rail. 2. The self-decomposing combine grain conveying structure according to claim 1, wherein an inclined portion inclined obliquely rearward and upward is formed at a front end portion of the conveying guide . 3. The self-decomposing combine cereal conveying structure according to claim 1 or 2, wherein the auxiliary conveying device is configured to be interlocked and driven with a transmission system of the mowing unit . The rail cutting member is equipped with a rail support member that supports a guide rail for holding and conveying the culm in the supply and transport device, and the rail support member supports the front end of the guide rail of the auxiliary transport device. The cereal conveyance structure of the self-decomposing combine as described in any one of 1-3. A cereal guide piece is connected to a bracket that is positioned at the rear end of the auxiliary transport device and on which an idler wheel that winds the transport chain is pivotally supported. The cereal conveyance structure of the self-decomposing combine according to any one of claims 1 to 4, wherein the structure is configured to overlap with an inlet plate protruding forward from above.

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