JP6348385B2 - Combine - Google Patents

Description

  The present invention relates to a combine that threshs while harvesting cereals, and more particularly to a structure of a pre-processing unit that harvests and transports cereals toward a threshing apparatus.

  Generally, in a pre-processing device for a combine, the cereals are collected from both the left and right sides and transported, so that the transported culm (especially the stock side) may be clogged. It was cumbersome and time-consuming to remove the cereal clog and clean it in a narrow space.

  Conventionally, one of the left and right transport chains, for example, a pre-processing section provided with a pivoting fulcrum part on the start end side of the right transport chain and a locked part that can be engaged and disengaged by a hook on the terminal end side of the one chain. A cereal conveying device has been devised (Patent Document 1). The cereal conveying apparatus is configured to clog the merging part by releasing the latching of the locked part by the hook and rotating the one conveying chain to open the merging part of the left and right conveying chains. You can remove the transporting cereals.

Japanese Patent No. 2983531

  One transport chain rotates the extension wheel on the end side with the guide rail around the rotation axis of the sprocket on the start end side to open the junction, but the right transport is the one transport chain. The chain is a long one extending substantially over the entire width of the preprocessing unit, and a large rotation space is required to rotate the transport chain about the rotation axis.

  For this reason, the arrangement structure of the pre-processing unit such as the transport chain becomes troublesome, the right transport chain interferes with other members, the rotation range of the transport chain is restricted, and the other ( Left) There is a possibility that a sufficient distance from the transfer chain cannot be secured.

  Then, an object of this invention is to provide the combine which moves a right conveyance body (chain) and a left conveyance body (chain) mutually, and can cancel | release the clogging of a grain straw efficiently with a small movement amount.

This invention arrange | positions the pre-processing part (3) so that raising / lowering is possible in front of the traveling machine body (2) which has a threshing part (5), and the corn straw conveying apparatus (17) In the combine (1) conveyed to the feed chain (16) of the threshing part by
The said grain candy conveying apparatus (17) is the 1st conveyance which conveys the stock origin side of a grain candy toward the traveling machine body (2) side toward the other from the width direction one side of the said pre-processing part (3). A body (32B), and a second transport body (32A) that transports so as to merge from the other widthwise side of the pretreatment unit toward the first transport body (32B),
It said first conveyance body (32B) is guided back of culms conveying side of the conveying member, a support member for supporting (129S) is configured to be movable,
The second conveyance body (32A) is characterized in that the terminal-side rotator (101, 102) that supports and supports the terminal-side rotator in the conveyance direction is configured to be movable.

A rotation support shaft (127) is provided on a support frame (126) that supports a rotating body (66) (55a, 55b) around which the first transport body (32B) is wound,
A rotating frame (129) extending toward the end in the conveying direction is rotatably connected to the rotating support shaft,
The support member (129S) is integrally disposed on the rotating frame.

A plurality of positioning engagement holes (142, 143) are formed on the transport direction end side (126b) of the first transport body (32B) of the support frame (126),
An insertion / removal member (138) that selectively engages with the plurality of engagement holes (142, 143) is disposed on the distal end side of the rotating frame (129),
The insertion / extraction member (138) is disposed on the terminal end side (126b) of the support frame, and is disposed on the inner diameter side of the guide (149) that guides the terminal end side of the first transport body (32B).

Supporting plate for supporting the end-side rotating body prior Symbol second carrier (101, 102) (111), slidably supported on the frame (112) of the pre-processing unit,
The support plate (111) is integrally provided with a conveyance member disengagement regulating member (123) below the terminal-side rotating body (101, 102).

Operation units (P _{1 to} P ₃ , 73, 74) capable of rotationally driving the first and second transport bodies (32B) (32A) are provided in the vicinity of the pretreatment unit (3).

  In addition, although the code | symbol in the said parenthesis is for contrasting drawing, it has no influence on the structure as described in a claim by this.

  According to the first aspect of the present invention, one transport body moves the support member that guides and supports the cereal transport side of the transport body to the back surface, and the clogging pressure of the cereal acting on the transport body is increased. Since the other transport body moves the terminal side rotating body and loosens the transport body, the first and second transport bodies interact with each other to release the clogging of the cereal and the clogging. The movement range for release is small, the structure is simplified, and there is little interference with other members. The entire pre-treatment unit configuration is released efficiently without removing the clogging space. can do.

The first transport body extending from one side to the other side in the width direction of the pre- processing unit has a rotating frame that is rotatably connected to the support frame by a rotating support shaft. Since the support member that guides and supports the rear side of the transport side of the transport body is provided, the first transport body that is long in the width direction can release the clogging pressure of the cereal with the support member having a small movement range, and is efficient in a small space. Well-clogged cereals can be released.

A plurality of engaging holes for positioning provided in the end side of the supporting frame, the insertion and removal member provided on the distal end side of the pivoting frame selectively engage, possible to easily change the position of the support member Can do. In addition, since the insertion / removal member is located on the inner diameter side of the guide disposed on the terminal side of the support frame, the pressure from the first conveyance body is applied to the insertion / removal member during the insertion / removal operation to the engagement hole of the insertion / removal member. Does not act, and the above insertion / extraction operation can be performed smoothly and reliably.

According to the present invention according to claim 2, the support plate supporting the terminating side rotating body of the second transfer member, slidably disposed with respect to the frame of the pre-processing portion for supporting the leading end and drive sprocket or the like, the By operating the terminal-side rotator away from the junction with the first transport body, clogging of the cereals at the junction can be easily released by an operation in a relatively small movement range.

According to the third aspect of the present invention, when the cereal is jammed, the operator is located near the pretreatment unit, and operates the first and second transport bodies to the release position, and the operation unit Clogged cereals can be eliminated while rotating the first and second transport members.

The side view which shows the combine which can apply this invention. The plan view. The side view which shows a pre-processing part. The perspective view which shows the reverse drive shaft and the cover for performing reverse drive of a grain straw conveying apparatus. The left side view. The transmission expansion view of a pre-processing part. The left view which shows the reverse drive shaft which concerns on embodiment changed partially. The perspective view which shows the reverse drive shaft which concerns on embodiment changed further. The enlarged perspective view. The left view which shows having provided the reverse drive part which performs the reverse drive of a pre-processing part separately from the horizontal cylinder instead of being coaxial. The transmission expansion view which shows carrying out reverse rotation drive of the pre-processing part with the driving force transmitted from the drive shaft of a feed chain. The top view which shows the stock former conveying apparatus of a pre-processing part. It is a figure which shows the working state of a left conveyance chain, (a) is a side view, (b) is a top view. It is a figure which shows the removal state of a left conveyance chain, (a) is a side view, (b) is a top view. It is a figure which shows the working state of a right conveyance chain, (a) is a top view, (b) is a side view. The top view which shows the removal state of a right conveyance chain. The top view which shows the frame structure of a right conveyance chain. The expanded sectional view which shows the operation part of a right conveyance chain. It is a perspective view which shows the terminal part of a right conveyance chain, (a) is the figure which mounted | wore with the conveyance chain, (b) is the figure which removed the conveyance chain. The perspective view seen from the handling depth chain side which shows the state which switched the operation lever of the right conveyance chain.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the combine 1 has a traveling machine body 2 supported by a crawler, and a pre-processing unit 3 that cuts and conveys cereals is disposed in front of the traveling machine body 2. Has been. The traveling machine body 2 has a threshing unit 5 for threshing the grain from the harvested cereal on one side (left side), and a driving operation unit 6 and an engine on the other side (right side). A grain tank 7 for temporarily storing the threshed grain and a discharge auger 9 for discharging the grain in the grain tank 7 to the outside are disposed.

  As shown in FIG. 3, the preprocessing unit 3 is supported by the traveling machine body 2 so as to be movable up and down around a horizontal cylinder 10 that transmits power from the engine to the preprocessing unit 3. A divider 11 for weeding the cereals provided in the front part of the unit 3, a pulling device 12 for raising the cereals that have been weeded behind the divider 11, and a reciprocating cutting blade 13 for cutting the cereals; , The stock source scoring device 15 that stirs the stock side of the raised cereal and the cereal that has been harvested by the cutting blade 13 to the rear and delivered to the feed chain 16 of the threshing unit 5 And a bag transport device 17. Further, side covers 19 that can be easily attached and detached for maintenance and maintenance are disposed on both side surfaces of the pretreatment unit 3.

  The horizontal cylinder 10 that transmits the power from the engine to the preprocessing unit 3 is extended in the left-right width direction of the fuselage, and the vertical transmission cylinder 20 extends diagonally forward and downward from the horizontal cylinder 10. The lower end of the vertical transmission cylinder 20 is connected to a lower transmission cylinder 21 extending to the left and right over substantially the entire width of the pretreatment section 3, and the lower transmission cylinder 21 has brackets 22 at both ends thereof. A preprocessing frame 23 extending so as to surround the front of the preprocessing unit is attached. A plurality of dividers 11... That divide the rice husks in the field for each cutting line are fixed at a predetermined interval in the width direction at the front portion of the pretreatment frame 23. 13, the cutting blade 13 cuts the stock of the culm raised by the pulling device 12, and cuts the cereal.

  From the vicinity of the left end of the lower transmission cylinder 21, the intermediate transmission cylinder 25 extends obliquely upward and forward, and the upper end of the intermediate transmission cylinder 25 is raised by the pulling device 12 according to the state of the cereals in the field. It is connected to an upper transmission cylinder 27 extending in the traveling machine body width direction via a pulling transmission 26 that changes the speed. A plurality of pulling transmission cylinders 29 project forward from the upper transmission cylinder 27, and the pulling device 12 for raising the cereals is arranged in front of the pulling transmission cylinder 29. The pulling device 12 includes a chain with a claw (not shown) and a pulling case 12a, and the hook of the chain with the claw rotates upward in the pulling case 12a to raise the cereal.

  The cereal grains that have been raised by the pulling device 12 are picked up and focused by the stock-source scraping device 15 backward. The stock rake device 15 includes a rake belt 30 that rakes the stock of the cereal that has been raised by the pulling device 12, and a star wheel 31 that focuses the cereal that has been raked by the rake belt 30. These scrambling belts 30 and star wheels 31 are provided in a number corresponding to the number of cutting lines (six in this embodiment). The star wheel 31 (31A, 31a, 31C, 31c, 31b, 31B from the left side of the machine body) has a substantially star shape made of resin, and the star wheel 31 and the scraping belt 30 are provided on the same axis and are synchronized. And is configured to rotate.

  As shown in FIG. 6, the cereal conveying device 17 has chains 32 </ b> A and 32 </ b> B that are left and right and central stock former transporters that convey the stock side of the cereal sent from the star wheels 31 </ b> A, 31 </ b> B and 31 </ b> C. , 32C, left and right and central tip transport bodies 33A, 33B, 33C that transport the tip side, and the rear stock transport body that transports the stock side of the cereal that has been transported and merged rearward by these (Chen) 35 and a handling depth conveying body (Chen) 36 that adjusts the handling depth of the cereal basket. These are the left (second) stock transport chain 32A and the left tip transport chain 33A for the left side grain and the right (first) stock transport chain 32B and the right tip transport for the right side. While the chain 33B transports the central cereals to the central stock transport chain 32C and the central tip transport chain 33C, the culm position is changed by the handling depth transport chain 36. Are received by the right-handed tip transport chain 33B and the rear stock transport chain 35 and delivered to the feed chain 16.

As shown in FIGS. 4 and 5, the horizontal cylinder 10 is pivoted to a mount portion 40 disposed at the upper end of a lift frame 39 that is fixed to the body frame 37 of the traveling body 2 and extends upward. Supported as possible. Drive shaft S1 of the horizontal cylinder 10 (see FIG. 6), together with the left end is projected to the left outside of the lateral tube 10, the tip portion of the protruding portion P ₁ projecting from the side cylinder 10 to the hexagonal cross section It is formed so that a tool such as a ratchet wrench can be fitted and driven in reverse (in the reverse direction) manually. Projecting the upper vicinity of the exit portion P _1, grain稈案the plate 41 for guiding the culms are Koso by the feed chain 16 is provided on the front portion of該穀稈案the plate 41, the projecting portion P _An elastically deformable cover 42 that passes through the top of ₁ and covers the front is supported. The front or above the projecting portion P _1, culms conveying side of the feed chain 16 (the front or upper side), right fore conveying chain 33B, the rear lines based on the transport chain 35 is located, they culms The cereal meal or swarf or the like spilled when transporting is prevented from being wrapped around the protruding portion P ₁ by the cereal meal guide plate 41 and the cover 42. Furthermore, a plate-shaped tip guide plate 43 that guides the tip of the grain pod to be transported and a threshing entrance rubber plate 45 that extends to the front of the threshing portion 5 are disposed above the right tip transport chain 33B. ing.

  Next, power transmission of the combine 1 will be described. In the combine 1, the engine E is mounted on the traveling machine body 2, and the power of the engine E is transmitted to the transport HST 47 via the threshing clutch 46 as illustrated in FIG. 6, and via the gear transmission 49. It is transmitted to the feed chain 16 and input to the input pulley 50a. The power input to the input pulley 50a is transmitted from the output pulley 50c to the drive shaft S1 in the horizontal cylinder 10 via the cutting clutch 51, which is a tension clutch disposed on the belt 50b, and from the drive shaft S1. It is transmitted to the drive shaft S2 in the vertical transmission cylinder 20. The power from the drive shaft S2 is transmitted to the drive shaft S3 in the lower transmission cylinder 21, and in the pulling transmission cylinder 29 via the drive shafts S4 and S5 in the intermediate transmission cylinder 25 and the upper transmission cylinder 27. It is transmitted to the drive shaft S6.

  A plurality of sub-transmission shafts are branched from the middle portion of the drive shaft S2 in the vertical transmission cylinder 20, and a plurality of drive sprockets 52, 53, 55, 56, provided on these sub-transmission shafts. 57, 59, the right tip transport chain 33B, the rear stock transport chain 35, the right (first) stock transport chain 32B, the handling depth transport chain 36, the central stock transport chain 32C, and the central stock transport chain 33C. Is driving. The power of the drive shaft S7 of the right tip transfer chain 33B is driven by the one-way clutch 60 provided between the drive shaft S7 and the drive sprocket 52 of the right tip transfer chain 33B. It is transmitted to the sprocket 52. When the drive shaft S7 is driven in reverse, the power is cut off in the one-way clutch 60 and the drive sprocket 52 does not rotate. The one-way clutch 60 is also provided on the drive shafts of the left tip transport chain 33A and the central tip transport chain 33C, and breaks even if the claws of the hooks of the tip transport chains 33A, 33B, 33C are driven in reverse. It is configured not to.

  Further, the power from the drive shaft S3 in the lower transmission cylinder 21 is transmitted to the cutting blade 13 attached to the pretreatment frame 23, and to the sub transmission shaft S8 branched from the drive shaft S4 in the intermediate transmission cylinder 25. Are provided with drive sprockets 61 and 65, which transmit power to the left (second) stock transport chain 32A and the left tip transport chain 33A. A plurality of transmission gears are provided in the pulling transmission 26 provided in the intermediate transmission cylinder 25, and the power shifted by the meshing of these is transmitted to the drive shaft S5 in the upper transmission cylinder 27. The pulling transmission device 26 may be set so that power is not transmitted to the pulling device 12 without meshing the transmission gear. The power transmitted from the drive shaft S5 to the drive shaft S6 in the upper transmission cylinder 27 passes through the drive shaft S6 in a plurality of (four in the present embodiment) pull-up transmission cylinder 29, and the pulling device. 12 drive sprockets 63.

  The driven sprockets 65 and 66 of the left (second) stock transport chain 32A and the right (first) stock transport chain 32B described above are attached to the shafts S9 of the star wheels 31A and 31B provided at the left and right ends of the machine body, respectively. , S10, and power is transmitted to the mounting shafts S9, S10 to rotate the driving star wheels 31A, 31B. The rotation of the star wheel 31A is first transmitted to the driven star wheel 31a attached to the attachment shaft S11 and then to the central star wheel 31C attached to the attachment shaft S12 by meshing with each other, and is transmitted to the attachment shaft S12. The free sprocket 67 of the central stock transport chain 32C is loosely fitted. Further, the rotation of the star wheel 31C is transmitted to the star wheel 31c attached to the attachment shaft S13, which is paired with the center star wheel 31C. On the other hand, the rotation of the star wheel 31B at the right end is transmitted to the driven star wheel 31b attached to the attachment shaft S14. The power of the mounting shafts S9, S10, S11, S12, S13, and S14 drives the drive belts 30 provided on the same axis of the respective drive shafts.

  Next, along the FIG. 12, the stock transportation of the cereal transportation device 17 in the preprocessing unit will be described. The right (first) stock transporter (hereinafter referred to as a right transport chain) 32B is wound obliquely between a sprocket 66 disposed at the right front part and two sprockets 55a and 55b disposed at the middle rear part. The left (second) stock transporter 32A (hereinafter referred to as the left transport chain) 32A is composed of a sprocket 65 disposed at the left front part and two rollers 101, 102 disposed at the middle rear part. It is wound diagonally in between. A central stock transporter (hereinafter referred to as a medium transport chain) 32C is wound between the sprocket 67 and the two sprockets 57a and 57b between the left and right transport chains 32A and 32B. The cutting blades 13 are arranged in the full width of the pretreatment unit 3, and six star wheels 31A, 31a, 31C, 31c, 31b, 31B are arranged behind the cutting blades 13 in the width direction. A take-up belt 30 is arranged from the star wheel toward the cutting blade 13. Further, three pairs of pulling devices 12... Are disposed above the cutting blade 13.

  As shown in the arrows A, B, and C, the culm harvested by the cutting blade 13 is scraped by the scooping belt 30 and the star wheel 31. While being inserted, the cereals conveyed as shown by arrow E by the middle conveyance chain 32C merge with the cereals conveyed by the right conveyance chain 32B as shown by the arrow D, and further the arrow F by the left conveyance chain 32A. As shown in FIG. Then, as shown by an arrow G, the merged cereals are conveyed to a handling depth conveying body (hereinafter referred to as a handling depth chain) 36 and conveyed to a feed chain 16 via a rear stock former conveying body (chain) 35. .

  As shown in FIGS. 13 and 14, the left (second) transfer chain 32A is stretched between the driven sprocket 65, the drive sprocket 61, the fixed roller 107, the tension roller 109, and the end side rollers 101 and 102. And driven by the rotation of the drive sprocket 61 and applied with a predetermined tension by the tension roller 109 and the fixed roller 107 to prevent detachment, so that the cereal is placed between the guide plate 110 on one side and the rolling rail 108. Hold and move. The rotation of the driven sprocket 66 is transmitted to the star wheel 31 </ b> A via the shaft and is also transmitted to the take-up belt 30.

  The two terminal rollers 101 and 102 are rotatably supported by a support plate 111, and the support plate 111 supports a sprocket 61 and 65, other rollers 107 and 109, and a guide plate 110. The main body side fixed frame 112 is supported to be movable (slidable). A knob bolt 113 is screwed between the support plate 111 and the fixed frame 112, and the support plate 111 can be fixed to the fixed frame 112 by tightening the knob bolt. A cam 115 is formed on the distal end side (driven sprocket 65 side) of the support plate 111, and a roller 116 is in rolling contact with the cam 115. The roller 116 is disposed on a plate 119 that is swingably supported by the fixed frame 112 by a pivot shaft 117, and is installed on the opposite side of the pivot shaft 117 of the roller 116 and the plate 119. A spring (torque spring) 121 is stretched between the pin 120 formed. A release lever 122 is integrally attached to the plate 119. An integral part of the support plate 111 is attached with a plate 123 for preventing culm winding so as to support the lower side of the end side rollers 101, 102. When 102 moves to the grain removal position (see FIG. 14), a conveyance body (chain) disengagement restricting member that supports the left conveyance chain 32 </ b> A so that it does not fall off is configured. Further, a clogging detecting means 203 comprising a switch 201 and a leaf spring 202 is provided on the fixed frame 112.

  As shown by the solid line in FIG. 12, the end side rollers 101 and 102 are brought close to the right conveyance chain 32B, and the cereal grains (see arrow F) conveyed by the left conveyance chain 32A are transferred from the right conveyance chain 32B. When the rice cake (see arrow D) joins and is in the cereal conveyance state, as shown in FIG. 13, the left conveyance chain 32 </ b> A has the release lever 122 in the working position and the roller 116 is supported by the cam 115. Is positioned away from the driven sprocket 65. In this state, the two end side rollers 101 and 102 supported by the support plate 111 are biased by the spring 121 in a direction away from the driven sprocket. Accordingly, the end side of the left transport chain 32A wound around the end side rollers 101 and 102 is in a position close to the right transport chain 32B, and both the transport chains 32A and 32B work together to serve the cereal. It is in the work position to convey.

  When the cereal conveyance is clogged, the release lever 122 is rotated backward as shown in FIG. As a result, the roller 116 attached to the plate 119 supported by the pivot shaft 117 moves rearward, moves the support plate 111 rearward via the cam 115 in contact therewith, and toggles. The spring 121 is positioned at that position.

  Next, the right (first) transfer chain will be described with reference to FIGS. 15, 16, and 17. The right conveyance chain 32B includes a start end (driven) sprocket 66 provided coaxially with the star wheel 31B, end side sprockets 55a and 55b (one of which is the drive sprocket 55), a fixed roller 128, a roller 124, a tension It is wound around the roller 125. The start-side sprocket 66 and the end-side sprockets 55a and 55b are disposed on a support frame 126 that is integrally attached to the pretreatment frame, and the support frame 126 has a rotational support as shown in FIG. A rotating frame 129 is connected to the shaft 127 so as to be rotatable. The rotating frame 129 integrally includes a support member 129S that supports the back side of the right conveying chain 32B on the grain conveying side, and a fixed roller 128 is integrally attached via a bracket 130.

  The support frame 126 includes a start end plate 126a, a terminal end plate 126b, and a connecting portion 126c that connects both the plates 126a and 126b. The connecting portion 126c includes an upper pipe portion 126P, a guide portion 126G that guides the upper and lower surfaces of the right conveyance chain 32B, and the like. A start end side sprocket 66 is rotatably supported on the start end side plate 126a, and the star wheel 31B and the take-in belt 30 are supported via a cylindrical member S10. End side sprockets 55a and 55b are supported on the end side plate 126b, and as shown in detail in FIGS. 18 and 19, the arm 131 is rotatable by a shaft 132 orthogonal to the surface of the plate 126b. And it is rotatably supported by a rotating bolt 133 parallel to the surface of the plate 126b, and an operating lever 135 is attached to the arm 131 so as to extend rearward. Accordingly, the operation of the operation lever 135 allows the arm 131 to rotate in the front-rear direction around the shaft 132 and in the up-down direction around the rotation bolt 133.

  An insertion / removal rod 138 is connected to the tip of the arm 131 through a long hole 131a and a pin 137. The rod 138 is slidably fitted into a sleeve 139 fixed to the tip of the rotating frame 129. The end plate 126b is composed of two upper and lower plates 126U and 126D, the shaft 132 is rotatably supported through the two plates, and the insertion / removal rod 138 passes through the two plates. It extends. The arm 131 is disposed above the upper plate 126U, and the back arm 140 is connected between the shaft 132 and the insertion / removal rod 138 below the lower plate 126D.

  An extension bolt 138 a is provided below the insertion / removal rod 138, and a spring 141 is contracted between the washer screwed on the bolt 138 a and the back arm 140. The insertion / extraction rod 138 has two enlarged diameter portions 138b having a large diameter, and an upper and lower fine diameter portion 138c therebetween, and the enlarged diameter portion 138b is engaged with the terminal end plate 126b. Two engaging holes 142 and 143 that can be combined with each other, and a communication portion 145 that connects between them and through which the small diameter portion 138c passes are formed.

  Between the upper and lower plates 126U and 126D of the terminal plate 126b, as shown in detail in FIG. 19 (b), a chain raising portion 148 is disposed on the lower plate 126D, and a chain guide 149 is provided at the tip thereof. Are integrally formed. As shown in FIG. 16, a tension arm 147 is rotatably supported on the end plate 126b via a bracket 144. The pivot shaft 147a of the tension arm 147 shares the support shaft of the roller 124. Yes. A tension roller 125 is supported on the tension arm 147, and a spring 154 is stretched between the bracket 130 for the fixed roller 128 extending from the rotating frame 129. Further, the tension arm 147 is in contact with the adjustable stopper 134, and the relaxation position of the right transport chain 32B by the tension roller 125 is regulated.

  As shown in FIG. 15, when the right conveying chain 32 </ b> B is in the grain conveying operation state, it is in a position (see FIG. 18) where the expanded diameter portion 138 b of the insertion / extraction rod is engaged with the engagement hole 143. 129 is in a position rotated forward. In this state, the support member 129S of the rotating frame 129 guides while supporting the back surface of the right transport chain 32B, and the stock of the cereals that are scraped by the right belt 32B and the stir belt 30 and the star wheel 31B. The original side is transported from the right direction to the left side of the pre-processing unit toward the rear side.

  When clogging occurs in the cereal grains being conveyed, the transmission to the pretreatment unit 3 is stopped by disengaging the harvesting clutch 51, and the operator pushes down the operation lever 135 downward to cause the arm 131 to turn the rotating bolt 133. The tip side is pivoted upward about the center. As a result, the insertion / removal rod 138 can rotate around the shaft 132 with the expanded diameter portion 138 b coming out of the engagement hole 143 against the spring 141. In this state, the arm 131 is also rotated integrally by operating the operation lever 135 toward the front of the machine body, and the small diameter portion 138c of the insertion / removal rod 138 moves to the front engagement hole 142 through the communication portion 145. When the operation lever 135 is pushed up, the expanded diameter portion 138b of the insertion / removal rod 138 is engaged with the engagement hole 142 and positioned.

  The distal end sleeve 139 of the rotating frame 129 moves integrally with the above-described insertion / removal rod 138, and as shown in FIG. 16, the rotating frame 129 is centered on the support shaft 127 as shown by an arrow I in FIG. As a result of the rotation, the support member 129S integrated with the rotation frame also moves in the retracted direction. Thereby, the right conveyance chain 32B is slackened in the retreat direction as shown by a chain line in FIG. 12, and it becomes easy to pull out the clogged cereals from the right conveyance chain 32B.

  As shown in FIG. 20, the culm conveyed from the right conveyance chain 32 </ b> B is conveyed at the tip side by the right tip conveyance chain 33 </ b> B, and the stock side is delivered to the handling depth conveyance chain 36. The handling depth conveying chain 36 is conveyed to the feed chain 16 of the threshing portion with the culm between the handling depth rails 150 and moved in a direction crossing the conveying direction to change the delivery position with the feed chain. Can be adjusted.

  The operation lever 135 of the right conveying chain 32B extends rearward and is located in the cereal conveying unit by the handling depth chain 36. When the operation lever 135 is in the working position, as shown by a chain line in FIG. 20, the operation lever 135 is positioned above the handling depth chain 36 and toward the inside of the machine body from the chain conveying side. There will be no interference with the transport. When the operation lever 135 is rotated in the forward direction (see arrow J) and is in the release position, as shown by the solid line in FIG. Falls from the handling depth chain 36 (see arrow K).

  Next, the operation of the present combine 1 will be described. An operator travels the combine 1 and threshs and harvests while harvesting grain straws in the field and proceeds with the harvesting operation. When the combine 1 travels in the field, the cereals are weeded by the divider 11 of the pretreatment unit 3 and the cereals that have been weeded by the pulling device 12 are raised and stand upright. The raised culms are picked up by the pick-up belt 30 and focused by the star wheel 31, and are cut by the cutting blade 13 in the process.

  The harvested cereals are transported backward by the stock transport chains 32A, 32B, and 32C arranged at the left and right and the center of the pre-processing unit 3, and backward by the stock transport chains 33A, 33B, and 33C. The cereals conveyed rearward are automatically adjusted to an appropriate handling depth by the handling depth conveying chain 36, and then transferred to the feed chain 16 by the right tip conveying chain 33B and the rear stock conveying chain 35. And carried to the threshing unit 5.

  As shown in FIG. 12, the stocker side of the above-mentioned grain straw joins the transported grain straw in the direction of arrow D by the right transport chain 32B and the transport grain meal in the direction of arrow E by the middle transport chain 32C. Conveyance cereals by 32A merge. When cereal clogging occurs at the junction, the end side rollers 101 and 102 of the left conveying chain 32B are compressed, and the support plate 111 that supports the end side roller is opposed to the spring 121 via the roller 116. And press. As a result, the clogging detection means 203 is activated to disconnect the reaping clutch 51.

  Since the pressing force acting on the support plate 111 acts on the roller 116, the knob bolt 113 can be easily rotated and removed, and the operator removes the release lever 122 with the knob bolt removed in FIG. Operate to the indicated release position. As a result, the pair of end-side rollers 101 and 102 together with the support plate 111 moves toward the driven sprocket 65 by a predetermined amount as shown in FIG. In this state, the drive sprocket 61 is in a stopped state, so that the end side of the left conveying chain 32A is held at a predetermined length by the fixed roller 107 and the guide plate 110, and the end side rollers 101, 102 and the left conveying chain 32A There is a gap between the end side, and the cereals that have entered between the end side rollers 101, 102 and the left conveying chain 32A can be easily removed. At this time, even if the terminal end side of the left conveying chain 32A is loosened, it is not supported and removed by the culm winding preventing plate 123 that also serves as a chain detachment regulating member.

  On the other hand, in the right transport chain 32B, the operator depresses the operation lever 135 once, removes the expanded diameter portion 138b of the insertion / removal rod 138 from the working position engagement hole 143, and then operates the operation lever 135 forward to push it. The expanded diameter portion 138b of the insertion / removal rod 138 is engaged with the release position engagement hole 142 and positioned. During the insertion / removal operation of the insertion / removal rod 138, the right conveying chain 32B is guided by the chain guide 149, and the clogging pressure of the cereals does not act on the insertion / removal rod, and the insertion / removal operation of the insertion / removal rod can be easily performed.

  In the state where the operation lever 135 is operated to the release position, the rotating frame 129 rotates about the rotating support shaft 127 in the direction of arrow I through the sleeve 139 fitted with the insertion / removal rod 138. Move. The support member 129S also rotates integrally with the rotating frame 129, and retracts the back side of the transport side of the right transport chain 32B to reduce the cereal clogging pressure.

As described above, when clogging occurs in the transporting of the culm in the culm transporting device 17, power is driven to the engine side from the drive shafts S <b> 5 and S <b> 6 and the input pulley 50 a by the cutting clutch 51 and the pulling transmission device 26. There is no transmission. On top of that, the projecting portion P ₁ of the reverse rotation drive which projects outwardly from the horizontal cylinder 10, flipping the cover 42 for covering the protruding portion P ₁ upward and forward, is reversed manually by a ratchet wrench, the drive The shafts S1, S2, S3, and S4 and the auxiliary drive shaft connected to these shafts are driven in reverse so that the clogged soot is loosened and removed easily. Note that the reverse rotation is not transmitted to the pulling device 12 and the take-up belt 30 by the one-way clutch.

Further, a cover 42 for covering the protruding portion P _1, come grain稈又of spill during transport of the culms of culms transfer device 17 is straw dust, etc. is prevented from winding around the projecting portion P ₁ . Protrusions P ₁ for the reverse drive, so protrudes to the left outwardly from the transverse tube 10, there is a certain distance above the ground or cutting blade, mud adhering, or non Setsu稈, Setsuwara etc. there in a position difficult wraps the projecting portion P _1, it is possible to perform smoothly the reverse drive operations by a ratchet wrench. Moreover, it can reversely drive with a standard tool (spanner, ratchet wrench, etc.), confirming a conveyance state from the left side which the said grain candy conveying apparatus 17 can visually recognize.

  Due to the reverse rotation of the grain feeder 17 of the pre-processing unit, the drive sprocket 61 rotates in the left conveyor chain 32A, and the left conveyor chain 32A moves from the driven sprocket 65 to the end roller 101, 102 side. With the conveying side as the tension side, the tension is applied such that there is no gap between the end side rollers 101 and 102, and the tension between the end side rollers 101 and 102 is absorbed by the tension roller 109. In this state, the gap between the end portion of the left transfer chain 32A and the end portion of the right transfer chain 32B is widened, and the support member 129S of the rotating frame 129 is retracted on the grain transfer side of the right transfer chain 32B. The cereal clogging pressure is reduced, and together, these can be easily pulled out while reversing the transport chains 32A and 32B.

  In the right conveyance chain 32B, when the rotation frame 129 is rotated rearward, the fixed roller 128 integrated with the rotation frame is also integrally rotated in the same direction. The rearward (retreat) movement of the support member 129S loosens the grain conveyance side of the right conveyance chain 32B, and the right conveyance chain 32B loosens correspondingly. However, the movement of the fixing roller 128 causes the tension roller 125 to move approximately. The tension of the right conveyance chain 32B can be maintained at the same position.

Production rotation by the projecting portion P ₁ may be a forward rotation is not limited to the reverse rotation. The left conveyance chain 32A is rotated by the forward rotation of the drive sprocket 61 in a state where the end side rollers 101 and 102 are located away from the right conveyance chain 32B and a predetermined tension is applied by the tension roller 109. As a result, the remaining cereal is sandwiched between the rail 108 and the guide plate 110 and conveyed rearward. Further, the right transport chain 32B is configured such that the predetermined tension is applied by the fixed roller 128 and the tension roller 125, and the support member 129S is in the retracted position and the pressure on the transport side is reduced. It rotates by the forward rotation of 55b.

The end portion of the right transport chain 32B is lifted up by a chain lifting portion 148, and the inner side surface thereof is guided by the chain guide 149 and guided to the end side sprockets 55a and 55b. Thereby, the cereal residue remaining in the right conveyance chain 32B is conveyed by the movement of the right conveyance chain 32B in a state where the pressure is reduced by the support member 129S in the retracted position, and the cereal residue from the left conveyance chain 32A At the joining portion, it is guided by the chain guide 149 and is in the normal transport position, but the end portion of the left transport chain 32A is at a distant position as described above, and the left transport without causing clogging. The remaining cereals from the chain 32A are merged and discharged to the handling depth chain 36 side. Although described in the forward manually by protrusions P _1, by connecting the reaper clutch 51, and forward the left transport chain 32A and the right conveyor chain 32B by the driving force from the engine E, on the release position Then, both conveying chains 32A and 32B may be driven to handle the stuffed cereal and discharge it to the deep chain 36 side. When the left and right transport chains 32A and 32B are driven by the driving force from the engine E, a cutting clutch operating switch 74 is provided in the vicinity of the preprocessing unit 3 as shown by a chain line in FIG. It is desirable that the conveyor chain is rotated forward while the harvesting clutch 51 is connected to operate and the cedar is discharged. The switch 74 constitutes a similar operation portion and the projecting portion P _1.

  When the cereal conveyor device 17 is driven in the forward direction to release the stagnation by the manual operation or the engine, and the cereals are discharged from the right conveyance chain 32B and the left conveyance chain 32A to the handling depth chain 36, the right conveyance is performed. The operation lever 135 for releasing the clogging pressure of the chain 32B is in a release position where it interferes with the culm by the handling depth chain 36, as shown by the solid line in FIG. Therefore, the cereals conveyed from the right conveying chain 32B are delivered to the handling depth chain 36, and come into contact with the operation lever 135 while being conveyed toward the feed chain 16 by the normal rotation of the handling depth chain 36. Is dropped to the outside of the aircraft. At this time, as shown in FIG. 20, the handling depth rail 150 is removed from the frame 15.

  Next, a partially modified embodiment will be described with reference to FIG. 7. This embodiment is different from the first embodiment in the protrusion amount of the protrusion for reverse rotation protruding from the left end of the horizontal cylinder 10. Since only the difference is that of the first embodiment, the same reference numerals are attached to the drawings and the description thereof is omitted.

Outward side of the feed chain 16 combine harvester capable of applying the present embodiment, the feed chain cover 69 is mounted detachably, the projecting portion P ₂ that protrudes to the left outside of the lateral tube 10 feeds Cheng 16 extends through the track and extends to the feed chain cover 69. Tip of the projecting portion P ₂ is made hexagonal cross section, it has a configuration that can reverse driven manually by a ratchet wrench.

This embodiment, since having the above-described structure, when the straw jam occurs in the transport of culms, remove the feed chain cover 69, a ratchet wrench or the like to the projecting portion P ₂ exposed By fitting, it can be driven in reverse. In the reverse drive operation, it is not necessary to turn over the cover 42 that covers the upper and front sides of the horizontal cylinder 10 as in the above embodiment, and the cereal conveying device 17 can be driven in reverse.

Next, a further modified embodiment will be described with reference to FIGS. 8 and 9. In the present embodiment, the same reference numerals are given to the same portions as those in the above embodiment, and the description is omitted. To do. A projecting portion P ₃ projecting outwardly to the left of the horizontal cylinder 10 of the combine to which the present embodiment can be applied penetrates through the feed chain cover 69 in the track of the feed chain 16 to the left of the feed chain cover 69. It protrudes toward. The distal end of the projecting portion P ₃ which projects to the left side of the feed chain cover 69 is adapted to the cross-sectional hexagonal shape, and a structure can be driven reversed by a ratchet wrench. The distal end of the projecting portion P ₃ is covered by a protective cap 70, preventing contact between the winding and the operator or the like of Warakuzu is achieved.

This embodiment, since having the above-described structure, when the straw jam occurs in the transport of culms, remove the protective cap 70, fitted with a ratchet wrench or the like to the projecting portion P ₃ exposed Drive in reverse. The reverse drive operation does not require the feed chain cover 69 to be removed as in the second embodiment, and the reverse drive operation can be performed directly and simply from the left side of the feed chain 16 simply by removing the protective cap 70. It can be performed.

In addition, the reverse drive part 71 which performs a reverse drive manually is provided not on the drive shaft S1 axis | shaft in the horizontal cylinder 10 as mentioned above but in the left side of the said lift flame | frame 39 as shown in FIG. A pulley 72 having a rotation radius larger than the rotation radius of the reverse rotation drive unit 71 is attached to the projecting portion P ₁ (or P ₂ or P ₃ ), and power is transmitted between the reverse rotation drive unit 71 and the pulley 72 by a belt or chain. The reverse rotation driving force may be transmitted to the drive shaft S1 by the handle 73 provided in the reverse rotation drive unit 71. As a result, the driving force of the reverse drive unit 71 is decelerated and transmitted to the drive shaft S1, so that the operation force of the reverse drive is small and fine movement is possible. Further, a clutch mechanism is provided in the reverse drive unit 71 so that power is not transmitted to the reverse drive unit during forward rotation. Even when the handle 73 provided in the reverse drive unit 71 is attached, the handle rotates during forward rotation. There is no need to attach or detach the handle.

Further, as shown in FIG. 11, the transmission shaft S17, which is shifted from the drive shaft S16 of the feed chain 16, and the projecting portion P ₁ (or P ₂ or P ₃ ) of the drive shaft S1 are tensioned by a belt or chain. The driving force is transmitted via the clutch 75, the threshing clutch 46 is turned on, the mowing clutch 51 is turned off, and the power from the engine E is supplied from the feed chain 16 side to the drive shaft S16, the transmission shaft S17, and the protruding portion. P _1, via the drive shaft S1, by transmitting the pre-processing unit 3, the reverse drive force to each unit of the drive shaft S2 following the preprocessing unit 3 may be caused to transmit.

DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling machine body 3 Pre-processing part 5 Threshing part 16 Feed chain 17 Grain conveying apparatus 32B 1st (one) conveyance body (chain)
32A Second (other) carrier (chain)
55a, 55b, 55 (Terminal side) Rotating body 65 Start end side rotating body 66 Start end side rotating body 101, 102 End side rotating body 111 Support plate 112 Frame 123 Conveying body (chain) disengagement regulating member 126 Support frame 127 Rotating support shaft 129 Rotating frame 129S Support member 138 Insertion / extraction member (rod)
142,143 engagement hole 149 guides _P 1 _~P 3, 73,74 operating unit

Claims (3)

In the combine that arranges the pretreatment unit so as to be movable up and down in front of the traveling machine body having the threshing unit, and conveys the cereals harvested by the pretreatment unit to the feed chain of the threshing unit by the cereal conveyance device,
The grain mash transporting device includes a first transport body that transports the stock source side of the grain mash from one side to the other side in the width direction of the preprocessing unit and toward the traveling machine body, and the width of the preprocessing unit. A second transport body that transports so as to merge from the other direction toward the first transport body,
It said first conveyance body, guiding the back of the culms conveying side of the conveying member, a support member for supporting is configured to be movable,
The second transport body is configured such that the end-side rotating body that supports the end of the transport body in the transport direction is freely movable .
A support frame is provided on a support frame that supports a rotating body around which the first transport body is wound,
A rotating frame extending toward the end in the conveying direction is rotatably connected to the rotating support shaft,
The support member is disposed integrally with the rotating frame,
A plurality of positioning engagement holes are formed on the end side of the support frame in the transport direction of the first transport body,
An insertion / removal member that selectively engages with the plurality of engagement holes is disposed on the distal end side of the rotating frame,
The insertion / extraction member is disposed on the terminal end side of the support frame, and is disposed on the inner diameter side of the guide that guides the terminal end side of the first transport body.
Combine that is characterized by that.   A support plate that supports the terminal-side rotating body in the second transport body is slidably supported by the frame of the pretreatment unit,
  The support plate is integrally provided with a transport body detachment regulating member below the terminal-side rotating body.
  The combine according to claim 1.   In the vicinity of the pretreatment unit, an operation unit capable of rotationally driving the first and second transport bodies is provided.
  The combine according to claim 1 or 2.

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