JP7041606B2 - combine - Google Patents

Description

The present invention relates to a combine equipped with a grain harvester transporting device for backward transporting from a harvesting section to a threshing device.

A traveling machine, a cutting section having a cutting blade that is supported up and down in front of the traveling machine and cuts sprocket in the field, and a sprocket transporting device that conveys the sprocket cut by the cutting blade to the rear. The culm transporting device includes a driving sprocket, a driven sprocket or a roller, and the driving sprocket and the driven sprocket or the roller. The combine described in Patent Document 1 having a carrier having an annular transport chain to be rotated and a reverse drive means for reverse-driving the transport chain by inputting reverse power to the drive sprocket is conventionally known. ..

In the cutting section, a large amount of grain culms are cut, especially varieties with thick stems are cut, stock loss occurs during transportation, etc. Even when the grain culm transport device is clogged, the harvested culm clogged in the grain culm transport device can be smoothly removed by reversely operating the grain culm transport device by the reverse rotation driving means. be.

However, when the grain culm transport device is reverse-driven by the reverse-reversing drive means, the transport chain tends to loosen, so that the meshing between the drive sprocket and the transport chain becomes poor and tooth skipping easily occurs. There was a problem that there was.

Japanese Patent No. 6348385

INDUSTRIAL APPLICABILITY According to the present invention, in a combine provided with a grain culm transport device capable of clearing clogging of a grain culm by the reverse rotation drive means and the switching mechanism, a drive sprocket is provided even when the grain culm transport device is reversely driven. The object is to provide a combine that can prevent the transport chain hung by the culm from jumping.

In order to solve the above problems, the present invention firstly comprises a traveling machine, a cutting blade that is supported up and down in front of the traveling machine and cuts a sprocket in a field, and a sprocket cut by the cutting blade. A cutting unit having a grain transporting device for transporting the sprocket to the rear and a grain removing device for performing a grain removing operation of the grain sprocket cut by the cutting section. And a transport body having the drive sprocket, the driven sprocket, or an annular transport chain hung around the roller, and a reverse drive means for reverse-driving the transport chain by inputting reverse power to the drive sprocket. The transport body is provided with a restricting member, and the restricting member is displaced in a direction in which the transport chain is disengaged from the drive sprocket when the drive sprocket is reversely driven by the reverse drive means. Switching between a regulated state that is close to the drive sprocket to the extent that it regulates this, and an unregulated state that is separated from the drive sprocket to the extent that the displacement of the transport chain is not regulated when the drive sprocket is driven in the forward direction. It is characterized by having a mechanism.

Secondly, the switching mechanism is characterized in that the regulating member is slid along the tangential direction of the driving procket to switch between the regulated state and the non-regulated state. ..

Thirdly, a change mechanism is provided to switch a part of the transport route of the harvested culm by the grain culm transport device between the normal transport state and the unclogging state wider than usual, and the jam is released by the change mechanism. It is characterized in that an interlocking mechanism for interlocking the switching of the above and the switching of the restricting member to the regulated state by the switching mechanism is provided.

The grain culm transport device can smoothly remove the cut grain culm clogged in the grain culm transport device by reversely operating the transport chain by the reverse rotation drive means, and the grain culm transport device can be smoothly removed by the restricting member. By preventing the transport chain hung by the drive sprocket from jumping during the reverse drive of the device, the reverse drive of the grain culm transport device can be performed more efficiently.

Further, according to the switching mechanism, the switching mechanism is configured to switch between the regulated state and the non-regulated state by sliding the regulating member along the tangential direction of the driving procket. The restricting member that slides by the mechanism can be arranged compactly with good space efficiency.

In addition, a change mechanism is provided to switch a part of the transport route of the harvested culm by the grain culm transport device between the normal transport state and the unclogging state which is wider than usual, and the change mechanism is used to switch to the clogging release state. According to a mechanism provided with an interlocking mechanism for interlocking the switching of the restricting member to the regulated state by the switching mechanism, the reversal is performed with a part of the transport path of the cut grain culm widened by the changing mechanism. By reversely driving the transport chain by the driving means, it is possible to more efficiently eliminate the clogging of the cut grain culm. Further, by interlocking the switching mechanism and the changing mechanism, the restricting member can be quickly switched to the regulated state when the transport chain is reversely driven by the reversing driving means. It is possible to reliably prevent forgetting to switch the regulating member.

It is an overall side view of the combine to which this invention was applied. It is the whole plan view of the combine to which this invention was applied. It is a model diagram which showed the grain culm transport device. It is a power transmission system diagram of this combine. It is the main part perspective view which showed the reversal mechanism of a cutting part. It is an enlarged perspective view of a main part which showed the reversal mechanism of a cutting part. It is a main part plan view which showed the working state of a displacement mechanism. It is a main part plan view which showed the clogging unclogging state of a displacement mechanism. It is a main part plan view which showed the working state of a change mechanism. It is a main part plan view which showed the clogging unclogging state of a change mechanism. It is a figure which showed the permissible state of a tension switching mechanism. It is a figure which showed the fixed state of a tension switching mechanism. It is a figure which showed the connection state of the operation lever. (A) is a perspective view of a main part showing a connected state of the deep-handled carrier, and (B) is a perspective view of a main part showing a separated state of the deep-handled carrier.

Hereinafter, embodiments of the present invention will be described with reference to the illustrated examples.
1 and 2 are an overall side view and an overall plan view of the combine to which the present invention is applied. In this combine, a traveling machine 2 supported by a pair of left and right crawler type traveling devices 1 and 1 and a cutting unit 3 supported by a pair of left and right crawler type traveling devices 1 and 1 so as to be able to move up and down in front of the traveling machine 2 to perform cutting work of grain culms in a field. I have.

The traveling machine 2 has a cabin 4 in which a control unit is arranged so that an operator can board and steer the cutting unit 3 at a position directly behind and to the right of the cutting unit 3, and grains cut by the cutting unit 3 on the diagonally left rear side of the cabin 4. A threshing device 6 for performing threshing work on the culm and a grain tank 7 arranged behind the cabin 4 and on the right side of the threshing device 6 are provided.

The cutting section 3 includes a divider 8 for weeding the grain culm in the field, a raising device 9 for raising the grain culm sown by the divider 8, and a scraping device for scraping the tip side and the stock root side of the grain culm. The device 11 includes a cutting blade 12 for cutting the stock root side of the grain culm, and a grain culm transport device 13 for rearwardly transporting the cut culm toward the front end side of the grain removal device 6.

Further, the cutting unit 3 includes a horizontal cylinder 16 in which a drive shaft S1 to which power from the engine is transmitted is built in, a vertical cylinder 17 extending diagonally forward and downward from the horizontal cylinder 16, and the vertical cylinder 3. It has a lower transmission cylinder 15 provided on the lower end side of the cylinder 17 and a vertical transmission cylinder 25 extending in the vertical direction from the lower transmission cylinder 15, and the lower end side of the vertical cylinder 17 is in front of the cutting portion. A pretreatment frame 18 which is formed so as to surround the side and to which the divider 8 is attached is attached to the front end side (see FIG. 1).

The cutting unit 3 is provided with a reverse rotation drive mechanism 14 for manually reverse drive the grain culm transport device 13. According to the reverse rotation drive mechanism 14, the cut grain culm can be transported to the front side opposite to the normal transport direction, so that the clogging of the cut grain culm in the grain culm transport device 13 can be easily eliminated. It is configured to be able to. The specific configuration of the reverse rotation drive mechanism 14 and the grain culm transport device 13 will be described later.

The threshing device 6 has a feed chain 19 arranged on the left and right sides and sandwiching the stock root side of the harvested grain culm delivered from the cutting unit 3 side and transporting the stock backward, and the feeding chain 19 for harvesting during the rearward transport. A threshing section that performs threshing work on the culm, a sorting section that sorts the threshed processed material placed under the threshing section into grains and dust such as straw waste, and a threshed grain. It is equipped with a discharge section that discharges the culm from the right side of the rear end.

According to the configuration, the harvested culm rearwardly transported from the harvesting unit 3 is rearwardly transported along the threshing device 6 by the feed chain 19. As a result, in the process of being transported backward, the tip side of the harvested culm is threshed by a threshing cylinder (not shown) or the like in the threshing section to produce straw. The straw is transported rearward by the straw transport body 21, and is discharged to the outside of the machine from the discharge unit 22 on the rear end side of the traveling machine body 2 as it is or is cut.

On the other hand, the processed product that has been threshed in the threshing section is introduced into the sorting section including a swing sorter or a wall insert fan by falling from the threshing section. In the sorting unit, the processed material that has fallen is sorted into straw grains and the like and grains such as paddy. The sorted straw debris and the like are discharged to the outside of the machine from the discharging unit 22 at the rear end of the traveling machine body 2, and the sorted grains and the like are transported and stored in the grain tank 7.

Next, the configuration of the grain culm transport device will be described with reference to FIGS. 1 to 3. FIG. 3 is a model diagram showing a grain culm transport device. The grain culm transport device 13 includes a stock culm side transport device 23 that rearwardly transports the stock root side of the harvested culm cut by the cutting blade 12 toward the front end side of the feed chain 19, and the tip of the cut culm. It is composed of a tip side transport device 24 that rearwardly transports the side to the front side of the threshing device 6.

The stock source side transport device 23 is arranged on the right side of the front portion of the cutting unit 3 and transports the harvested grain culm rearward toward the center side in the left-right direction, and a right stock source transport body (first transport body) 26 and a harvesting unit. The left stock source transport body (second transport body) 27, which is arranged on the left side of the front portion of the portion 3 and transports the harvested grain culm backward toward the center side in the left-right direction, and the right stock source transport body 26 and the left stock source. The central stock carrier 28, which is arranged between the transport body 27 and transports the harvested grain culm backward, and the stock root side of the harvested grain culm rearwardly transported by the transport bodies 26, 27, 28 are transported rearward. It has a rear stock carrier 29 and a handling depth transport body 30 for adjusting the handling depth of the grain culm, and the stock side of the cut grain culm cut by the cutting blade 12 is the front end side of the feed chain 19. It is configured to carry backwards toward (see FIG. 3).

Further, the cutting blade 12 is arranged in the left-right direction on the front lower side of the stock transfer device 23 (see FIG. 3), and behind the cutting blades 26, 27, and 28. A plurality of star wheels 31 (six in the illustrated example) that are rotationally driven on the side are arranged side by side in the left-right direction. At this time, the scraping belt 32 is arranged so as to be hung from the axis of each star wheel 31 toward the cutting blade 12 in front.

According to the configuration, in the grain culm cut by the cutting blade 12, the tip side of the grain culm is raised by the raising device 9, and the root side of the grain culm is raised by the scraping belt 32 and the star wheel 31. It can be scraped toward the grain culm transport device 13 side (see FIG. 3).

The right stock carrier 26 includes a large-diameter driven sprocket 36 arranged on the right side of the front portion of the cutting portion 3, a drive sprocket 37 arranged behind the driven sprocket 36 and in the center in the left-right direction, and the drive. A roller 38 provided in the vicinity of the sprocket 37, a roller 39 provided between the drive sprocket 37 and the driven sprocket 36, a right transfer chain 41 hung by the drive sprocket 37, and the right transfer chain 41. A tension roller 42 for applying tension from the inside and a support rail 43 for supporting each sprocket 36, 37, 38, 39, etc. around which the right transfer chain 41 is hung are provided, and are scraped from the right side of the cutting portion 3. The cut sprocket is configured to be transported backward to the handling depth transport body 30 side.

Further, the right stock carrier 26 has a changing mechanism 44 configured to swing the support position with the front side of the right transport chain 41 as a fulcrum, and the tension roller 42 elastically toward the right transport chain 41 side. A tension switching mechanism 45 is provided to switch between a state of urging the tension roller 42 and a state of fixedly supporting the tension roller 42. Details of the changing mechanism 44 and the tension switching mechanism 45 will be described later.

The left stock carrier 27 has a large-diameter driven sprocket 46 arranged on the left side of the front portion of the cutting portion 3, a small-diameter drive sprocket 47 arranged on the rear upper side of the driven sprocket 46, and the drive sprocket 47. Rollers 48, 49 arranged side by side so as to sandwich the drive sprocket 47, two end side rollers 51, 52 arranged on the left and right center sides further rearward of the drive sprocket 47, and the left side hung by each sprocket or the like. A transport chain 53 and a support rail 54 for supporting each sprocket, roller, etc. around which the left transport chain 53 is hung are provided, and the harvested grain shavings squeezed from the left side of the cutting section 3 can be transferred to the handling depth transport body 30 side. It is configured to carry backwards.

Further, in the left stock carrier 27, a displacement mechanism (change mechanism) 56 capable of displacementing the front-rear positions of the terminal rollers 51 and 52 and a left transport chain 53 hung by the drive sprocket 47 are provided. A tooth skipping control mechanism (switching mechanism) 57 that can regulate displacement (tooth skipping) in a direction away from the drive sprocket 47 is provided. Details of the displacement mechanism 56 and the tooth skipping control mechanism 57 will be described later.

The central stock carrier 28 includes a driven sprocket 61 arranged near the center of the front portion of the cutting portion 3, a drive sprocket 62 arranged on the rear upper side of the driven sprocket 61, rollers 63, 64, and front and rear. A central transport chain 66 hung around by each sprocket is provided, and the cut grain culm squeezed from the center side of the cutting section 3 is configured to be backward transported to the middle portion side of the right stock carrier 26. (See Fig. 3).

At this time, the right transport chain 41 and the left transport chain 53 are arranged in a V shape in a plan view, so that the cut grain culms merge on the end side in the transport direction (the front end side of the handling depth transport body 30). It is configured so that a space to be formed (hereinafter referred to as a confluence portion X) is formed (see FIG. 3). Similarly, the end side of the central transport chain 66 in the transport direction extends to the vicinity of the middle portion of the right transport chain 41, and a confluence Y is formed between the central transport chain 66 and the right transport chain 41 where the cut grain culm joins. (See Fig. 3).

The handling depth carrier 30 has a drive sprocket 67 arranged on the rear end side of the right stock carrier 26 in a plan view, and is behind the drive sprocket 67 and on the left side and in front of the feed chain 19. A driven sprocket 68 arranged on the side, a handling depth transfer chain 69 provided so as to extend rearward along the right stock carrier 26 and hung by each sprocket, and the handling depth transfer chain. A transport rail 71 provided along 69 and sandwiching the stock sprocket side of the grain sprocket is provided, and the harvested sprocket transported rearward by each of the transport bodies 26, 27, 28 is held by the handling depth transport chain 69. Is configured to be delivered to the rear stock carrier 29 side while adjusting. The specific configuration of the handling depth carrier 30 will be described later.

According to the above configuration, in the cut grain culm cut by the cutting blade 12, the tip side is raised by the raising device 9, and the stock root side is left and right with each scraping belt 32 as shown in FIG. The pair of star wheels 31 and 31 divides it into a right (arrow A), a center (arrow B), and a left (arrow C) and is scraped into the grain culm transport device 13 side, and the right star wheels 31A and 31a The harvested culm is delivered to the right stock carrier 26 and transported backward (arrow D), and the harvested culm scraped by the left star wheels 31B and 31b is the left stock culm. The harvested culm that is delivered to the carrier 27 and transported backward (arrow F), and scraped by the central star wheels 31C and 31c is delivered to the central stock carrier and transported backward (arrow). E).

At this time, in addition to the harvested grain culm scraped from the right star wheel 31A side, the right stock carrier 26 is transported to the right transport chain 41 by the central stock carrier 28 as shown by arrow E. The harvested grain culms are configured to meet at the confluence Y.

Next, the stock root side of the harvested grain culm rearwardly transported to the rear end side of the right stock origin carrier 26 and the left stock origin carrier 27 is harvested along the arrow G after being merged by the confluence portion X. While the pinching position on the stock root side of the grain culm is adjusted, the culm is transported backward by the handling depth transport body 30. The harvested grain culms that are rearwardly transported while being positioned adjusted by the handling depth transporter 30 are delivered to the front end side of the feed chain 19 by the rear stock source transporter 29.

Next, the power transmission structure will be described with reference to FIG. FIG. 4 is a power transmission system diagram of this combine. An engine 10 is installed on the traveling machine body 2, and the power output from the engine 10 is transmitted to the transport HST 73 via the threshing clutch 72 and transmitted to the feed chain 19 via the gear transmission 74. At the same time, it is input to the input pulley 76.

The power transmitted to the input pulley 76 is transmitted to the output pulley 78 via the cutting clutch 77 arranged on the belt, and is driven to the drive shaft S1 in the horizontal cylinder 16 which is rotationally driven integrally with the output pulley 78. Be transmitted. The power transmitted to the drive shaft S1 is transmitted to the drive shaft S2 in the vertical cylinder 17 via the bevel gear, and the power transmitted to the drive shaft S2 is transmitted to the drive shaft S3 in the lower transmission cylinder 15. At the same time, it is transmitted to the drive shaft S6 on the raising device 9 side via the drive shafts S4 and S5.

Further, the power transmitted to the drive shaft S2 in the vertical cylinder 17 has a plurality of sub-transmission shafts branched from the middle portion thereof, and is transmitted to each of the plurality of drive sprockets provided on these sub-transmission shafts. To. As a result, the right stock carrier 26 (right transport chain 41), the central stock carrier 28 (central transport chain 66), the handling depth transport body 30 (handling depth transport chain 69), and the rear stock carrier 29 Is driving.

Further, the power transmitted to the drive shaft S3 in the lower transmission cylinder 15 is transmitted to the cutting blade 12. Further, a drive sprocket 47 is provided on the auxiliary transmission shaft branched from the drive shaft S4, and power is transmitted to the left stock transfer chain 53.

Further, the driven sprockets 46 and 36 of the left stock transfer chain 53 and the right stock transfer chain 41 are fixed to the mounting shafts S9 and S10 of the star wheels 31A and 31B provided at the left and right ends of the machine, respectively. By transmitting power to these mounting shafts S9 and S10, the star wheels 31A and 31B on the drive side can be rotationally driven.

The power transmitted to the star wheel 31B on the drive side on the left end side is first transmitted by engaging with the star wheel 31b on the driven side mounted on the mounting shaft S11, and then is transmitted to the central star mounted on the mounting shaft S12. It is transmitted by engaging with the wheels 31C. A driven side sprocket 61 of the central stock transfer chain 66 is loosely fitted to the mounting shaft S12. Further, the power transmitted to the star wheel C on the center side is transmitted to the star wheel 31c mounted on the mounting shaft S13 paired with the star wheel on the center side.

On the other hand, the power transmitted to the star wheel 31A on the right end side is transmitted to the star wheel 31a on the driven side mounted on the mounting shaft S14.

At this time, the power transmitted to the mounting shafts S9, S10, S11, S12, S13, S14 that support the star wheel is the suction belts 32, 32, 32 provided coaxially with each drive shaft. , 32, 32, 32 are driven.

Next, the configuration of the reverse rotation drive mechanism will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view of the main part showing the reversing mechanism of the cutting part, and FIG. 6 is an enlarged perspective view of the main part showing the reversing mechanism of the cutting part. The reverse rotation drive mechanism 14 is a shaft-shaped member provided on the same axis as the horizontal cylinder 16 and rotating integrally with the drive shaft S1 in the horizontal cylinder 16 or the drive shaft S1. It is composed of a protruding portion 20 protruding outward to the left.

The protrusion 20 is arranged on the front side in the track of the feed chain 19 in a side view, and the protrusion 20 is a cover body whose tip (left end) 20a side covers the side of the feed chain 19. It is configured to penetrate 81 and be exposed to the outside. Further, the tip 20a side of the protruding portion exposed to the outside of the cover body 81 has a hexagonal cross-sectional shape, and a tool (not shown) such as a ratchet wrench is connected to the tip 20a side of the protruding portion. As a result, the reverse power can be manually input to the drive shaft S1 in the horizontal cylinder 16.

Further, the protruding portion 20 is provided with a removable protective cap 82 that covers the exposed portion from the cover body 81, and straw debris may be caught in the protruding portion 20 that rotates about the axis when the cutting portion 3 is driven. , It is possible to prevent the situation of direct contact with the worker.

It should be noted that the input of the reversing power to the drive shaft S1 in the horizontal cylinder 16 via the protrusion 20 may be configured to be automatically performed by using an electric motor or the like.

Next, a specific configuration of the displacement mechanism (changing mechanism) provided on the left stock carrier side and the tooth skipping controlling mechanism (switching mechanism) will be described with reference to FIGS. 7 and 8. FIG. 7 is a plan view of a main part showing the left stock carrier whose displacement mechanism has been switched to the working state, and FIG. 8 shows the left stock carrier whose displacement mechanism has been switched to the unclogging state. It is a plan view of a main part.

The displacement mechanism 56 includes a support plate 86 that pivotally supports the terminal roller 51, 52, a pair of the terminal rollers 51, 52, and a support stay 87 that supports the support plate 86 on the vertical transmission cylinder 25 side. And, the rectangular plate-shaped contact portion 89 provided so as to be swingable around the swing shaft 88 provided on the support rail 54 inside the left transport chain 53, and the corresponding contact portion 89 are swing-operated. A displacement lever 91 is provided, and by swinging the displacement lever 91, the width of the confluence X, which is a part of the transport path of the cut grain culm, is set to a normal transport state suitable for normal transport work and the normal transport state. It is configured so that it can be switched to the unclogging state in which the merging portion X is wider than in the transport state (see FIGS. 7 and 8).

The support plate 86 (termination side rollers 51, 52) is provided with a slide guide member 80 formed by bending a plate member on the front end (lower end) side thereof, and the left stock is provided via the slide guide member 80. It is supported so as to be slidable back and forth on the rear end side of the support rail 54 of the original carrier 27.

With this configuration, the displacement mechanism 56 supports the swing shaft 88 by abutting the lateral direction of the contact portion 89 on the support plate 86 side via the swing operation of the displacement lever 91. Since the distance from the plate 86 can be maintained at a predetermined long distance, the positions of the end side rollers 51 and 52 inside the rear end (end) of the left transfer chain 53 are displaced (switched) to a predetermined rear position. (See Fig. 7). Thereby, by sliding the end side rollers 51 and 52 to the rear position, the confluence portion X can be switched to the normal transport state having a size suitable for the rear transport of the normal harvested culm.

On the other hand, by bringing the longitudinal direction of the contact portion 89 into contact with the support plate 86 via the swing operation of the displacement lever 91, a predetermined space between the swing shaft 88 and the support plate 86 is determined. Since it can be maintained at a short distance, the positions of the end-side rollers 51 and 52 can be displaced (switched) to a predetermined front position (see FIG. 8). As a result, by sliding the end-side rollers 51 and 52 to the front position, it is possible to switch to the unclogging state in which the merging portion X is wider than in the normal transport state. At this time, since a part of the contact portion 89 also comes into contact with the support rail 54 side, the swing position of the contact portion 89 via the displacement lever 91 can be held at a predetermined position.

That is, according to the displacement mechanism 56 having the configuration, the grain culm transport device 13 (each stock carrier 26, 27, 28) is provided by the reverse rotation drive mechanism 14 in order to remove the cut grain culm clogged in the confluence portion X. By displacing the end side rollers 51 and 52 forward by the displacement mechanism 56 and switching to the unclogging state in which the merging portion X is widened, the cut grain culm clogged in the merging portion X can be smoothly driven. Can be removed.

The support stay 87 is configured such that one end side thereof is attached and fixed to the support plate 86 side, and the other end side is detachably attached to the vertical transmission cylinder 25 side by a knob bolt 85 (see FIG. 7).

Specifically, the support stay 87 is when the support plate 86 is slid to the rear (upward) position by the displacement lever 91 (contact portion 89) (when the support plate 86 is switched to the normal transport state). ), The support stay 87 is configured to be attached and fixed to the vertical transmission cylinder 25 side by the knob bolt 85 so that the posture (position) of the support plate can be maintained. As a result, the operating position of the support plate 86 can be held.

On the other hand, the support stay 87 is released from being fixed to the vertical transmission cylinder 25 side by removing the knob bolt 85, so that the support plate 86 (support stay 87) can be freely slid back and forth. It is configured to be switched to. As a result, the support plate 86 can be slid and moved from the rear position to the front (downward) position (switching from the normal transport state to the unclogging state). At this time, the support stay 87 can also be used as a handle when the support plate 86 is slid back and forth.

The tooth skipping control mechanism 57 includes a regulation member 92 arranged in the vicinity of the drive sprocket 47 and outside the left transport chain 53, a support rod 93 for mounting and supporting the regulation member 92 in a position-adjustable manner, and the support. A mounting support portion 94 for mounting the rod 93 to the support stay 87 or the support plate 86 side (support stay 87 side in the illustrated example) is provided, and the restricting member 92 is close to the drive sprocket 47 and is left from the drive sprocket. It is configured to be switchable between a regulated state that regulates the displacement of the transport chain 53 to the tooth skipping side and an unregulated state in which the regulating member 92 is separated so as not to interfere with the drive sprocket 47 side (FIG. FIG. 7 and FIG. 8).

The restricting member 92 is a plate-shaped or rod-shaped member bent into a dogleg shape, and the driven sprocket is arranged by arranging the bent portion close to a portion where the drive sprocket meshes with the left transport chain 53. It is formed so as to guide the left transport chain 53 toward the drive sprocket 47 when the left transport chain 53 is about to come off from 47.

The support rod 93 has the restricting member 92 attached and fixed to the tip end side, and is inserted into a U-shaped guide member 96 fixed to the support rail 54 side. As a result, the restricting member 92 can be guided in a predetermined sliding direction along the tangential direction of the drive sprocket 47.

Further, the tip end side of the support rod 93 is configured so that the mounting position of the restricting member 92 can be finely adjusted. In the illustrated example, the tip side of the support rod 93 is threaded, and the restricting member 92 is attached with a fixing nut screwed to the tip end side of the support rod 93.

The mounting support portion 94 is configured such that one end side is mounted on the support rod 93 side and the support rod 93 can be locked to the support stay 87 side by the other end side (FIG. 7 and FIG. See FIG. 8). The other end side of the mounting support portion 94 may be configured to be able to be locked to the support plate 86 side.

With this configuration, in the tooth skipping control mechanism 57, the displacement mechanism 56 is usually used because the regulation member 92 is locked to the support stay 87 side via the support rod 93 and the mounting support portion 94. When the state is switched to the transport state (rear position), the restricting member 92 is switched to the non-regulated state separated from the drive sprocket 47 side, and the displacement mechanism 56 is switched to the clogging clearing state (front position). The restricting member 92 is configured to be switched to a regulated state close to the drive sprocket (and the left transport chain 53) side.

That is, the tooth skipping regulating mechanism 57 is configured to automatically switch the position of the regulating member 92 to the regulated state in conjunction with the operation of switching the displacement mechanism 56 to the clogging release state. As described above, when the reversing drive mechanism 14 removes the cut grain culm in the vicinity of the confluence X, the displacement mechanism 56 is switched to the unclogging state, so that the tooth skipping control mechanism can be switched smoothly and quickly. At the same time, it is possible to surely prevent the situation where the switching operation of the tooth skipping control mechanism is forgotten.

Next, a specific configuration of the changing mechanism provided on the right stock carrier side and the tension switching mechanism (switching mechanism) will be described with reference to FIGS. 9 to 13. FIG. 9 is a plan view of a main part showing the right stock carrier whose changing mechanism has been switched to the working state, and FIG. 10 shows the left stock carrier whose changing mechanism has been switched to the unclogging state. It is a plan view of a main part, FIG. 11 is a diagram showing an allowable state of the tension switching mechanism, FIG. 12 is a diagram showing a fixed state of the tension switching mechanism, and FIG. 13 is a connected state of an operation lever. It is a figure which showed.

The change mechanism 44 includes the support rail 43, a swing rail 102 swingably supported around a swing shaft 101 provided on the front side of the support rail 43 side, and the swing rail 102. An operation lever 103 for swinging operation is provided, and by swinging the operation lever 103, the width of the confluence X and Y, which is a part of the transport path of the harvested grain rail, is usually suitable for normal transport work. It is configured so that it can be switched between the transport state and the unclogging state in which the merging portions X and Y are wider than in the normal transport state (see FIGS. 9 to 12).

The support rail 43 is a support rail front portion 43A on the front side of the right stock carrier 26 on which the driven sprocket 36 and the like are provided, and the drive sprocket 37 on the rear side of the right stock carrier 26. It is composed of a support rail rear portion 43C provided with the tension switching mechanism 45 and the like, and a support rail middle portion 43B connecting between the support rail front and rear portions 43A and 43C.

The swing rail 102 extends along the middle portion 43B of the support rail and is arranged along the inside of the right transport chain 41, so that the right transport chain 41 rotates smoothly along the swing rail 102. It is configured to drive.

Further, the swing rail 102 is attached to the support rail front portion 43A (or support rail middle portion 43B) side so that the front end side thereof can swing around the swing shaft 101. The operation lever 103 is connected to the rear end side of the 102 so as to be swingable. As a result, the space for the confluence portions X and Y formed along the swing rail 102 (right transport chain 41) by swinging the swing rail 102 back and forth via the operation lever 103. You can change the size of.

The operating lever 103 is provided with a positioning mechanism 115 for positioning the operating position of the operating lever 103 on the proximal end side thereof. In the positioning mechanism 115, the swing shaft 116 of the operation lever 103 pivotally supported on the rear portion 43C side of the support rail, and the swing shaft 116 and the base end side of the operation lever 103 are mounted and fixed to be integrally shaken. The rocking piece 117 to be operated, the regulation shaft 118 attached to the rocking piece 117 and swinging integrally with the operation lever 103, and the guide hole 119 through which the regulation shaft 118 is inserted are provided. (See FIG. 13).

The regulation shaft 118 is formed with a large diameter portion 118a having a large relationship in the axial direction and a small diameter portion 118b smaller than the large diameter portion. Further, the regulation shaft 118 is provided with an elastic member 121 on one side in the axial direction so that the entire operation lever 103 can be pushed down toward the support rail 43 side.

The guide hole 119 is composed of a pair of locking portions 119a and 119b to which the expanding portion of the regulating shaft 118 fits, and a narrow switching portion 119c connecting the pair of locking portions 119a and 119b. The large-diameter portion 118a of the regulation shaft 118 is fitted (engaged) with the portions 119a and 119b, and the small-diameter portion 118b of the regulation shaft 118 is formed so as to be insertable into the switching portion 119c.

According to the configuration, in the operation lever 103, the operation lever 103 is predetermined by fitting the large diameter portion 118a of the regulation shaft 118 into the guide hole 119 (locking portion 119a) on the support rail rear portion 43C. It is held at the operating position (see FIG. 13), and the operating lever 103 is pushed down against the urging force of the elastic member to position the small diameter portion 118b of the regulation shaft 118 on the guide hole 119. The operation lever 103 can be switched to a state in which the swing operation is possible.

As a result, the operation position of the operation lever 103 is positioned at a position where the regulation shaft 118a is inserted into any one of the pair of locking portions 119a and 119b. Specifically, the operation lever 103 swings the swing rail 102 backward so as to widen the working position of the swing rail 102 along the middle portion 43B of the support rail and the confluence portions X and Y. It is configured so that it can be swung at the release position.

According to the change mechanism 44 of the configuration, by swinging the operation lever 103 to the working position, the right stock source transport body 26 is a part of the transport path of the harvested grain culm. By switching the size of Y to the normal transport state suitable for the normal transport work and swinging the operation lever 103 to the release position, the merging portions X and Y are wider than in the normal transport state to clear the clogging. It can be switched to the state.

That is, according to the configuration change mechanism 44, in order to remove the cut grain culms clogged in the merging portions X and Y, the culm transport device 13 (each stock carrier 26, 27, When the 28) is reversely driven, the swing rail is swung forward by the change mechanism 44 to switch the merging portions X and Y to a widened unclogging state, so that the merging portions X and Y are clogged. The grain culm can be removed more smoothly.

The tension switching mechanism 45 attaches the tension roller 42, the fixed roller 40, the connecting member 106 to which the tension roller 42 and the fixed roller 40 are pivotally supported, and the tension roller 42 to the right transport chain 41 side. An elastic member 107 that is squeezed, a mounting member 108 that connects one end side of the elastic member 107 to the rear portion 43C side of the support rail, an abutting member 109 that restricts the movement of the tension roller 42, and an operation lever 103 side. The right transport chain 41 is provided with a restricting member 111 provided on the swing piece 117, and is in a movable state in which tension is elastically applied to the right transport chain 41 by the tension roller 42, and by fixing the tension roller 42. It is configured so that it can be switched to a fixed state that regulates loosening (see FIGS. 9 and 10 and the like).

The connecting member 106 is a plate-shaped member that is bent and formed in a dogleg shape, and the fixed roller 40 is pivotally supported by the bent portion and is supported by a structure that can swing around the bent portion. It is mounted and fixed on the rear 43C side of the rail. Further, the tension roller 42 and the elastic member 107 are connected to both ends of the connecting member 106, and the other end side of the elastic member 107 is on the rear portion 43C side of the support rail via the mounting member 108. Is linked to.

As a result, the tension roller 42 pivotally supported by the connecting member 106 is configured to be swingable (movable) in the inward and outward directions of the right transport chain 41 around the bent portion of the connecting member 106, and is elastic. It is configured so that tension can be elastically applied to the inside of the right transport chain 41 by the urging force of the member 106.

The contact member 109 is attached and fixed to the connecting member 106 side together with the tension roller 42. Further, when the operation lever 103 is operated to a predetermined fixed position, the contact member 109 comes into contact with the regulation member 111 on the proximal end side of the operation lever, whereby the tension roller 42 (connecting member 106) is in contact with the regulation member 111. ) Is configured to be restricted from operating in a direction that opposes the urging force of the elastic member (see FIGS. 10 and 12).

Further, the contact member 109 is composed of a bolt member screwed into a nut member fixed to the shaft side of the tension roller 42, and finely adjusts the position of the head of the bolt member that abuts on the contact portion. It is configured to be able to.

According to the tension switching mechanism 45 having the configuration, when the operating lever 103 is operated to a predetermined movable position, the tension roller 42 elastically applies tension from the inside of the right transport chain 41. Therefore, it is switched to a movable state in which an appropriate tension can be applied to the right transport chain 41 according to the thickness and amount of the harvested grain culm that is transported backward by the right stock carrier 26 (FIGS. 9 and 9). See FIG. 11). On the other hand, when the operating lever 103 is operated to a fixed position, the tension roller 42 is restricted from being displaced to the side that opposes the urging force of the elastic member 107. Regardless of the transport amount of 26, the right transport chain 41 is switched to a fixed state in which it is driven without loosening (see FIGS. 10 and 12).

According to the configuration, in particular, even when the right stock source carrier 26 is reverse-driven by the reverse-reversing drive mechanism 14 in order to remove the harvested grain culms clogged in the confluences X and Y, the tension switching mechanism 45 By switching the tension roller 42 from the movable state to the fixed state, sufficient tension can be reliably applied to the right transport chain 41, so that the drive sprocket 37 can be efficiently driven without tooth skipping. can.

Further, the tension switching mechanism 45 is configured so that the tension roller 42 is automatically switched to the fixed state in conjunction with the switching operation of the changing mechanism 44 to the unclogging state by the operation lever 103. .. Specifically, the operation lever 103 has the same movable position for switching the tension switching mechanism 45 to the movable state and the working position for switching the changing mechanism 44 to the normal transport state, and the tension switching mechanism 45 is set to the fixed state. The fixed position for switching and the release position for switching the change mechanism 44 to the unclogging release state are configured to be the same.

That is, when the reverse rotation drive mechanism 14 removes the cut grain culms in the vicinity of the confluence X and Y, the change mechanism 44 is switched to the unclogging state, so that the tension switching mechanism 45 is automatically switched to the fixed state. Therefore, it is possible to reliably prevent a situation in which the tension switching mechanism 45 is forgotten to be switched.

Incidentally, on the swing rail 102 side of the change mechanism 44, an arcuate recess 113 into which the tension roller 42 switched to the fixed state by the operation lever 103 is fitted is formed, and the operation lever 103 is formed. The switching operation to the fixed position can be smoothly performed by (see FIG. 12).

Next, the handling depth carrier will be described with reference to FIG. FIG. 14 (A) is a perspective view of a main part showing a connected state of the deep-handled carrier, and FIG. 14 (B) is a perspective view of the main part showing a separated state of the deep-handled carrier.

In the handling depth transport body 30, the handling depth transport chain 69 and the transport rail 71 arranged along the handling depth transport chain 69 and sandwiching the stock base side of the harvested grain culm are separately united. The transfer rail 71, which can be attached to the handling depth transfer chain 69, can be easily attached to and detached from the connection mechanism 130.

As the connecting mechanism 130, the handling depth transfer chain 69 includes a U-shaped support 131 extending from the rear end (drive sprocket 68) side toward the outside in the left-right direction, and an end portion of the support 131. A U-shaped support plate 132 with an open upper portion provided on the side is provided, and a U-shaped mounting body with an open lower portion is provided on the support rail 71 side, and the support body is provided. And the mounting body are detachably bolted.

According to this configuration, the transport rail 71 can be easily and smoothly attached and detached, so that maintainability is improved, and for example, depending on the type and thickness of the cut grain culm, the transport depth transport chain 69 and transport are performed. It is also possible to easily replace the rail 71 with one having an appropriate distance from the rail 71.

2 Traveling machine 3 Cutting part 6 Threshing device 12 Cutting blade 13 Grain culm transport device 14 Reverse drive mechanism (reverse drive means)
26 Right stock carrier (transporter)
27 Left stock carrier (transporter)
28 Central stock carrier (transporter)
36, 46, 61 Driven sprocket 37, 47, 62 Drive sprocket 51, 52 Roller 41 Right transfer chain (transfer chain)
53 Left transport chain (convey chain)
66 Central transport chain (conveyor chain)
56 Displacement mechanism (change mechanism)
57 Tooth skip control mechanism (switching mechanism)
92 Regulatory members

Claims (3)

With the traveling aircraft,
A cutting unit having a cutting blade that is supported up and down in front of the traveling machine and cuts the grain culm in the field, and a grain culm transporting device that conveys the grain culm cut by the cutting blade to the rear.
It is equipped with a threshing device that performs threshing work on the culm cut by the cutting section.
The grain culm transport device has a transport body having a drive sprocket, a driven sprocket or a roller, an annular transport chain hung around the drive sprocket and the driven sprocket or the roller, and reverse power to the drive sprocket. It has a reverse rotation drive means for reversely driving the transport chain by inputting.
A regulating member is provided on the carrier, and the carrier is provided with a regulating member.
The restricting member is in a regulated state close to the drive sprocket to such an extent that when the drive sprocket is reversely driven by the reverse drive means, the transport chain is restricted from being displaced in a direction away from the drive sprocket. A combine characterized by providing a switching mechanism for switching to an unregulated state separated from the drive sprocket to the extent that the displacement of the transport chain is not restricted when the drive sprocket is driven in the forward direction. The combine according to claim 1, wherein the switching mechanism is configured to switch between the regulated state and the non-regulated state by sliding the regulating member along the tangential direction of the driving procket. A change mechanism is provided to switch a part of the transport route of the harvested culm by the grain culm transport device between the normal transport state and the unclogging state that is wider than usual.
The combine according to claim 1 or 2, wherein an interlocking mechanism for interlocking the switching to the clogging release state by the changing mechanism and the switching of the regulating member to the regulated state by the switching mechanism is provided.

Images