JP2017225465A - Harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester in which a change is not generated in a flow of a harvested material from a harvesting unit to a feeder regardless of tension operation of an endless turning carrier by a tension mechanism.SOLUTION: A feeder 6 includes a starting-edge side rotating wheel 23 provided at the conveyance starting-edge side of a feeder case 20, and left and right endless turning carriers 21 wound around a termination side rotating wheel 24 provided at the conveyance terminal side of the feeder case 20 in a turning/driving manner. One or both of the starting-edge side rotating wheel 23 or the termination side rotating wheel 24 include a drive shaft 24a, and left and right sprockets 24b where the left and right endless turning carriers 21 are wound. A cylindrical cover 63 is externally fitted in a place positioned between the left and right sprockets 24b of the drive shaft 24a in a relatively rotatable manner, and an arm 64 is extended from the cover 63. The arm 64 is configured in a reinforcing member 70 laterally bridged to the feeder case 20 in an engaging manner.SELECTED DRAWING: Figure 4

Description

  The present invention includes: a harvesting unit that harvests a harvested product from a field, and sends the harvested product to the rear by a rotating transporter; and a feeder that transports the harvested product from the rotating transporter, wherein the feeder is a feeder. A case, a starting end rotating wheel provided on the conveying start end side of the feeder case, a terminal rotating wheel provided on the conveying end side of the feeder case, the starting end rotating wheel and the terminal rotating The present invention relates to a harvesting machine including a pair of left and right endless rotating conveyance bodies wound around a ring so as to be rotatable and a tension mechanism for operating the left and right endless rotation conveying bodies.

  Conventionally, as the above-described harvester, for example, there is a normal combine shown in Patent Document 1. The ordinary combine is provided with an inlet side rotating body as a starting end side rotating wheel body, an outlet side rotating body as a terminal side rotating body, and a chain as a pair of left and right endless rotating conveyance bodies. In addition, a tension mechanism for tensioning the chain with a tension rotating body is provided.

JP 2013-183681 A

  Conventionally, a starting-end-side rotating wheel body (inlet-side rotating body) is supported by an inlet-side arm member, and the inlet-side arm member is swingably supported by a feeder case. That is, the start end side rotating wheel body can be swung with respect to the feeder case. In this case, the position of the starting-end-side rotating wheel body in the feeder case may change due to the tension generated in the endless rotating transport body due to the tensioning operation of the endless rotating transport body (chain) by the tension mechanism. When the position of the starting-end-side rotating wheel body in the feeder case changes, the position of the starting-end-side rotating wheel body with respect to the rotating-conveying body of the harvesting section changes, so that the harvest is transferred between the rotating-conveying body and the endless rotating conveying body. May be adversely affected. That is, the flow of the harvested product from the harvesting unit to the feeder may be deteriorated.

  An object of the present invention is to provide a harvesting machine that does not cause a change in the flow of the harvested product from the harvesting unit to the feeder, regardless of the tensioning operation of the endless rotating conveyance body by the tension mechanism.

The harvester according to the invention is
A harvesting section that harvests the harvested product from the field and sends the harvested product to the rear by a rotating carrier;
A feeder that conveys the harvest from the rotating carrier, and
The feeder includes a feeder case, a starting-end-side rotating wheel provided on the conveying start-end side of the feeder case, a terminal-side rotating wheel provided on the conveying-end side of the feeder case, and the starting-end rotating wheel And a pair of left and right endless rotating transport bodies wound around the end-side rotating wheel body so as to be capable of rotational driving, and a tension mechanism for operating the left and right endless rotating transport bodies,
The starting end side rotating wheel body and the terminal end side rotating wheel body are fixed at predetermined positions of the feeder case,
The tension mechanism is configured to apply a tension operation force to the left and right endless rotating conveyance bodies between the starting end side rotating wheel body and the terminal end side rotating wheel body.

  According to this configuration, since the starting end side rotating wheel body and the terminal end side rotating wheel body are fixed at predetermined positions of the feeder case, they are generated in the endless rotating transport body by the tensioning operation of the endless rotating transport body by the tension mechanism. Even if tension acts on the starting end side rotating wheel body and the terminal end side rotating wheel body, the positions of the starting end side rotating wheel body and the terminal end side rotating wheel body in the feeder case do not change. Therefore, not only the tension adjustment of the endless rotating transport body by the tension mechanism can be efficiently performed, but also the position of the starting end side rotating wheel body with respect to the rotating transport body can be changed regardless of the tension operation of the endless rotating transport body by the tension mechanism. Instead, the harvest is smoothly delivered between the rotating transport body and the endless rotating transport body.

  In the present invention, it is preferable that the tension mechanism includes a tension member that stretches the endless rotating transport body and a spring that presses and biases the tension member against the endless rotating transport body.

  According to this configuration, since the tension member is pressed and biased to the endless rotating transport body by the spring, even if the endless rotating transport body is extended, the endless rotating transport body is automatically put in a tension state. Adjusted.

  In the present invention, the tension mechanism includes a pair of left and right tension members for separately operating the left and right endless rotating conveyance bodies, a pair of left and right swing arms for separately supporting the left and right tension members, It is preferable that a connecting shaft for interlockingly connecting the swing arms is provided.

  According to this configuration, the left and right swing arms are interlocked and connected to each other by the connecting shaft, and the left and right swing arms can be swung together. Instead of replacing the tension member, only the worn tension member can be replaced and repaired at low cost.

  In the present invention, the tension mechanism includes a pair of left and right tension members for separately operating the left and right endless rotating conveyance bodies, a pair of left and right swing arms for separately supporting the left and right tension members, A pair of left and right springs for separately urging the left and right oscillating arms to press and urge the tension member to the endless rotating conveyance body, It is preferable that the left and right springs are located inside the feeder case and located outside the feeder case.

  According to this configuration, the swing arm is positioned closer to the tension member, and the tension member is advantageously supported on the strength surface by the swing arm, compared to the swing arm positioned outside the feeder case. The harvested material and dust in the feeder case can be prevented from adhering to the spring.

  In the present invention, it is preferable that the left and right springs are configured to act on a portion between a swing fulcrum of the swing arm and a support point for supporting the tension member.

  According to this configuration, the tension mechanism can be made compact by reducing the operating stroke provided for the spring to a small stroke, compared to applying the spring to the support point of the tension member in the swing arm.

  In the present invention, the left and right swing arms extend from the respective swing fulcrum toward the moving direction so as to follow the moving direction of the endless rotating transport body operated by the respective tension members. It is preferable.

  If the direction extending from the swing fulcrum of the swing arm is in the direction opposite to the moving direction of the endless rotating transport body that is tensioned by the tension member, the moving endless rotating transport body tends to hit the tension member. . When this bump occurs, the swinging arm rattles. According to this configuration, the direction in which the swing arm extends from the swing fulcrum is the same direction as the direction of movement of the endless rotating transport body operated by the tension member, and the endless rotating transport body bumps into the tension member. Does not occur, and the swinging arm is unlikely to rattle.

  In the present invention, the feeder case includes a bottom plate portion, a pair of left and right side plate portions, and a top plate portion, and a portion of the top plate portion located above the tension member and the bottom plate portion. The side view shape of the top plate portion so that the interval is wider than the interval between the bottom plate portion and each of the portions located on the transfer start end side and the transfer end side of the tension member of the top plate portion. It is preferable that the shape is formed so as to bulge upward.

  According to this configuration, it is possible to secure a wide internal space of the feed case that enables the movement of the tension member and to increase the stroke of the tension member.

  In the present invention, the support member that supports the starting-end-side rotating wheel body and the feeder case are configured to be connected by a plurality of connection bolts arranged along the crop conveyance direction, and the plurality of connection bolts One of the connection bolts is configured to be mounted in a round hole-shaped bolt hole formed in the support member and the feeder case, and the remaining connection bolts of the plurality of connection bolts are connected to the support member. And a bolt hole formed in one of the feeder case, and a bolt hole formed in the other of the support member and the feeder case and extending in the direction of harvest conveyance. It is preferable that

  According to this configuration, the endless rotating transport body can be easily changed from the tensioned state to the slack state, and the slackened endless rotating transport body can be easily and accurately operated to the original tension state. Can be returned. Therefore, when the endless rotating conveyance body is a chain, it can be performed in a slack state for exchanging and connecting the chain, and the work is easy.

  In other words, if the connecting bolts attached to the support member and the round hole bolt holes of the feeder case are removed, the remaining connecting bolts can be loosened without removing them, and the endless rotating transport body can be changed from the tension state to the slack state. it can. That is, when the connecting bolts attached to the round hole bolt holes of the support member and feeder case are removed and the remaining connecting bolts are loosened, the shape of the bolt holes to which the remaining connecting bolts are attached is long. Therefore, the endless rotating conveyance body can be changed to a slack state by sliding the support member toward the conveyance end side of the hood case and moving the start end side rotation ring body toward the termination end rotation ring body.

  After changing the endless rotating conveyance body to the slack state, the support member is slid to the conveyance start end side of the feed case, and the round hole bolt hole of the support member is matched with the round hole bolt hole of the feeder case, A connecting bolt is mounted across the round hole bolt hole of the matched support member and the round hole bolt hole of the feeder case. Then, by the positioning action of this connecting bolt, the starting end side rotating wheel body is fixed at the original predetermined position, and the endless rotating conveyance body is in the original tension state.

  In the present invention, one or both of the starting end side rotating wheel body and the terminal end side rotating wheel body includes a drive shaft and a pair of left and right sprockets around which the left and right endless rotating conveyance bodies are wound, A cylindrical cover is fitted on the drive shaft between the left and right sprockets so as to be relatively rotatable, and an arm extends from the cover, and the arm extends laterally to the feeder case. It is preferable to be configured to be able to engage with the reinforced reinforcing member.

According to this configuration, it is possible to easily prevent the winding of scraps and the like around the drive shaft and the like.
In other words, the engagement of the arm extending from the cover with the reinforcing member can prevent the cover from being rotated by contact with the sprocket. That is, it is possible to prevent the cover from being rotated by using the reinforcing member as a rotation preventing member. Since the cover covers the drive shaft in a stopped state, the scraps do not wrap around the drive shaft or the cover.

  In the present invention, it is preferable that the cover is constituted by a plurality of divided cover bodies, and the base end side of the arm is connected to the cover on both lateral sides of the split surface of the cover.

  According to this configuration, the connection of the divided cover bodies for retaining the cover in a cylindrical shape can be simplified. In other words, the arm for preventing the cover from being rotated can be provided with a connecting function for connecting the divided cover body.

It is a side view which shows the whole combine. It is a top view which shows the whole combine. It is a side view which shows a feeder. It is a vertical side view which shows a feeder. It is a cross-sectional top view which shows a feeder. It is a top view which shows a starting end side rotating ring body and a tension mechanism. It is a front view which shows an interlocking mechanism. It is a cross-sectional top view which shows the support structure of a starting end side rotating ring body. It is the IX-IX cross section arrow view of FIG. FIG. 9 is a sectional view taken along the line XX in FIG. It is a cross-sectional top view which shows a cover. It is a vertical side view which shows a cover. (A) is a vertical side view showing an arm, and (b) is a vertical side view showing a cover in an opened state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A case where the harvester according to the embodiment of the present invention is applied to a combine will be described. FIG. 1 is a side view showing the entire combine. FIG. 2 is a plan view showing the entire combine.
As shown in FIGS. 1 and 2, the combine includes a traveling machine body in which a pair of left and right crawler traveling devices 2 are drivably mounted at the lower part of the machine body frame 1. A driving unit 3 is provided at the front of the traveling machine body. A threshing device 4 and a grain tank 5 are provided at the rear of the traveling machine body. The threshing device 4 and the grain tank 5 are arranged in the lateral direction of the traveling machine body. A feeder 6 extends from the front of the threshing device 4 toward the front of the machine body. A harvesting section 7 is connected to the extending end of the feeder 6. An engine 8 is provided at a location below the driving unit 3 in the traveling machine body. The engine 8 is configured to transmit the output of the engine 8 to the crawler traveling device 2, the threshing device 4, the feeder 6, and the harvesting unit 7.

  The feeder 6 is supported by the threshing device 4 so as to be swingable up and down. By swinging the feeder 6 up and down by the lift cylinder 9, the lowering posture of the harvesting unit 7 with the harvesting device 10 positioned near the farm scene and the state where the harvesting device 10 is separated upward from the farm scene. Can be raised and lowered to the non-working posture.

  The combine performs the harvesting work of rice, wheat and the like by running the traveling machine body with the harvesting unit 7 in the descending work posture.

  The harvesting unit 7 cuts the planted cereal and sends the harvested cereal to the rear. The harvesting unit 7 is specifically configured as shown in FIGS.

  The harvesting unit 7 includes a harvesting unit frame 11. The harvesting part frame 11 is connected to the front end of the feeder 6 at the rear end. A transport deck 12 is provided at the bottom of the harvesting unit frame 11. A cutting device 10 is provided at the front end of the transfer deck 12. A pair of left and right dividers 13 are provided at the front end of the harvesting part frame 11. A scraping rotary reel 14 is provided above the reaping device 10. A transverse feed auger 15 and a rotary conveyance body 16 are provided above the conveyance deck 12.

  Of the planted cereals located in front of the traveling machine body, the planted culm to be cut is introduced into the harvesting unit frame 11 by the left and right dividers 13. The tip side of the introduced planted culm is scraped backward by the scraping rotary reel 14. The introduced planted culm stock is cut by the reaping device 10 and the planted cereal is harvested. The harvested cereal meal is supplied to the rotary carrier 16 by the lateral feed auger 15 and sent out to the rear of the harvesting unit 7 by the rotary carrier 16.

Specifically, the rotary carrier 16 is configured as follows.
The rotary carrier 16 includes a rotary drum 16a and a plurality of scraping arms 16b. The rotating drum 16 a is integrally formed with the rotating drum of the lateral feed auger 15. The plurality of scraping arms 16b are dispersed at a plurality of locations dispersed in the circumferential direction of the rotating drum 16a and the direction along the rotational axis of the rotating drum 16a. Each scraping arm 16b rotates together with the rotating drum 16a.

  As shown in FIG. 3, a delivery port 17 is formed in the rear wall portion of the harvesting portion frame 11. The delivery port 17 faces the rotary carrier 16. The rotary conveyance body 16 is rotationally driven by the lateral feed auger 15. The harvested cereal meal supplied to the rotary transport body 16 is transported along the transport deck 12 by scraping by each scraping arm 16b, and is fed backward from the feed outlet 17.

  The whole of the harvested grain culm from the rotating carrier 16 to the tip of the harvested grain is conveyed backward by the feeder 6 and supplied to the threshing device 4. The threshing device 4 performs threshing processing by a handling cylinder (not shown) that introduces and rotates the whole of the supplied harvested culm from its stock to the tip into a handling room (not shown). The threshing device 4 performs a sorting process for separating the grain obtained by the threshing process from dust such as straw scraps. The grain after the sorting process is conveyed from the threshing device 4 to the grain tank 5 and stored in the grain tank 5. The grain tank 5 is provided with a discharge auger 5a. The grain stored in the grain tank 5 can be taken out by the discharge auger 5a.

The feeder 6 will be described.
FIG. 3 is a side view showing the feeder 6. FIG. 4 is a vertical side view showing the feeder 6. FIG. 5 is a cross-sectional plan view showing the feeder 6. As shown in FIGS. 3, 4, and 5, the feeder 6 includes a feeder case 20 and a pair of left and right endless rotating conveyance bodies 21.

  The feeder case 20 includes a bottom plate portion 20a, a pair of left and right side plate portions 20b, and a top plate portion 20c. The left side plate portion 20b is connected across the left end side of the bottom plate portion 20a and the left end side of the top plate portion 20c. The right side plate portion 20b is connected across the right end side of the bottom plate portion 20a and the right end side of the top plate portion 20c. The feeder case 20 is configured in a cylindrical shape. On the feed start end side (front end side) of the feeder case 20, a cereal introduction port 6F is formed. The cereal introduction port 6F communicates with the delivery port 17 of the harvesting section 7. At the conveyance end side (rear end side) of the feeder case 20, a grain outlet 6R is formed. The grain sending outlet 6R communicates with the inside of the threshing apparatus 4.

The side view shape of the top plate portion 20c is formed in the shape shown in FIG.
The distance between a portion of the top plate portion 20c that is located above a tension member 31 described later and the bottom plate portion 20a is DM, and the portion of the top plate portion 20c that is located closer to the transport start end than the tension member 31 and the bottom plate The interval between the portion 20a and the bottom plate portion 20a is defined as DR, and the interval between the bottom plate portion 20a and the portion of the top plate portion 20c that is positioned closer to the conveyance end than the tension member 31 is defined as DR. The side view shape of the top plate 20c is formed in a shape that bulges upward so that DM is wider than DF and DR.

  A start end side rotating wheel body 23 is provided inside the feeder case 20 on the transfer start end side. A termination-side rotating wheel body 24 is provided inside the feeder case 20 on the conveyance termination side. The start-end-side rotating wheel body 23 and the terminal-side rotating wheel body 24 are supported by the left and right side plate portions 20b so as to rotate around the rotation axis center along the airframe lateral direction. A pair of left and right endless rotating conveyance bodies 21 are wound around the start end side rotating wheel body 23 and the terminal end side rotating wheel body 24.

  The start end side rotating wheel body 23 is rotatable, but is fixed to a predetermined position of the left and right side plate portions 20b via a support structure described later. The attachment position of the starting end side rotating wheel body 23 in the feeder case 20 does not change regardless of the tensioning operation of the left and right endless rotating transport bodies 21 by the tension mechanism 30 described later.

  The terminal-side rotating wheel body 24 is supported by the left and right side plate portions 20b via a pair of left and right support cylinders 25. The left and right support cylinders 25 are fixed to the side plate portion 20b, and the terminal-side rotating wheel body 24 is rotatable, but is fixed to a predetermined position of the left and right side plate portions 20b. The attachment position of the terminal-side rotating wheel body 24 in the feeder case 20 does not change regardless of the tensioning operation of the left and right endless rotating transport bodies 21 by the tension mechanism 30 described later.

  The terminal-side rotating wheel body 24 includes a drive shaft 24a and a pair of left and right sprockets 24b. The left and right sprockets 24b are supported by the drive shaft 24a so as not to rotate relative to each other. The drive shaft 24a is rotatably supported by the left and right support cylinders 25. A belt pulley 27 is provided at a portion of the drive shaft 24a located outside the feeder case 20 so as not to be relatively rotatable. Although not shown, the belt pulley 27 is configured to transmit the driving force from the engine 8.

  The pair of left and right endless rotating transport bodies 21 are constituted by an endless rotating chain. The left endless rotating conveyance body 21 is wound around a start-end-side rotating wheel body 23 and a left sprocket 24b. The right endless rotating conveyance body 21 is wound around a start-end-side rotating wheel body 23 and a right sprocket 24b. At a plurality of locations in the longitudinal direction (rotation direction) of the endless rotating transport body 21, transport slats 29 are attached across the left and right endless rotating transport bodies 21.

The feeder 6 supplies the threshing cereal from the rotary carrier 16 to the threshing device 4 by the following operation.
The terminal-side rotating wheel body 24 is driven by the belt pulley 27, and the left and right endless rotating transport bodies 21 are driven to rotate in the rotating direction F (see FIG. 4) by the sprocket 24b. The conveying slat 29 is transported downward from the upper side of the starting end side rotating wheel body 23 to the lower side in the starting end side rotating wheel body 23. The transporting slats 29 that are transported downward act on the harvested cereal meal. The harvested cereal meal from the rotary transport body 16 is scraped between the endless rotating transport body 21 and the bottom plate portion 20a by the transport slat 29 at the grain shed introduction opening 6F. The harvested cereal culm is transported rearward along the bottom plate portion 20a by the transport action through the transport slats 29 of the left and right endless rotating transport bodies 21. The transport slat 29 is lifted and transferred from the lower side to the upper side of the terminal side rotating wheel body 24 in the terminal side rotating wheel body 24. The transporting slats 29 that are moved up and forward act to feed the harvested cereal meal. The harvested cereals that have been transported to the transport end are fed backward from the cereal feed outlet 6 </ b> R by the transport slats 29 and supplied to the threshing device 4.

  A connecting member 26 is attached to the left and right support cylinders 25 so as to be relatively rotatable. The left and right connecting members 26 are connected to the threshing device 4 to support the feeder 6 so that the threshing device 4 can swing up and down. A sprocket 28 is provided at a portion of the drive shaft 24a located outside the feeder case 20 so as not to be relatively rotatable. The sprocket 28 transmits the driving force of the drive shaft 24 a to the harvesting unit 7. The left and right support cylinders 25 are connected to the reinforcing member 70 by a connecting body 71 inside the feeder case 20. The reinforcing member 70 is laid across the left and right side plate portions 20b.

  The feeder case 20 is equipped with a tension mechanism 30. The tension mechanism 30 includes a pair of left and right tension members 31. The left and right tension members 31 are located between the starting end side rotating wheel body 23 and the terminal end side rotating wheel body 24. The left and right tension members 31 are positioned so as to act separately on the left and right endless rotating conveyance bodies 21. The tension mechanism 30 allows the left and right endless rotating transport bodies 21 to be stretched between the start-side rotating wheel body 23 and the terminal-side rotating wheel body 24.

  The tension mechanism 30 includes a pair of left and right springs 32. The left spring member 31 is configured to press and urge the left tension member 31 to the left endless rotating conveyance body 21 by the left spring 32. The right tension member 31 is configured to press and urge the right tension member 31 to the right endless rotating conveyance body 21 by the right spring 32. Even if slack occurs in the left and right endless rotating transport bodies 21, the slack can be automatically eliminated by the tension mechanism 30.

Specifically, the tension mechanism 30 is configured as shown in FIGS.
The left and right tension members 31 are individually supported by a pair of left and right swing arms 33. The left and right swing arms 33 are located inside the feeder case 20. A base portion of the left swing arm 33 is rotatably supported by the left side plate portion 20 b of the feeder case 20 via a support shaft 34. A base portion of the right swing arm 33 is rotatably supported by the right side plate portion 20 b of the feeder case 20 via a support shaft 34. The left tension member 31 has its swing arm 33 ascending and swinging with respect to the side plate portion 20b with the support shaft 34 as a swing fulcrum, so that the left endless rotating transport body 21 has a terminal side. A portion that moves back from the rotating ring body 24 to the starting end side rotating ring body 23 is pressed from below. The right tension member 31 has its swing arm 33 ascending and swinging with respect to the side plate portion 20b with the support shaft 34 as a swing fulcrum. A portion that moves back from the rotating ring body 24 to the starting end side rotating ring body 23 is pressed from below.

  The left and right springs 32 are located outside the feeder case 20. The biasing force of the left spring 32 is transmitted to the left swing arm 33 by the interlock mechanism 35, and the left swing arm 33 is swingingly biased upward by the left spring 32. Thereby, the left tension member 31 is pressed and urged by the left spring 32 to the left endless rotating conveyance body 21. The biasing force of the right spring 32 is transmitted to the right swing arm 33 by the interlock mechanism 35, and the left swing arm 33 is swingingly biased upward by the right spring 32. As a result, the right tension member 31 is pressed and urged against the right endless rotating conveyance body 21 by the right spring 32.

  As shown in FIGS. 3, 5, 6, and 7, the left and right interlocking mechanism 35 includes an operation pin 36 and an interlocking shaft 37. The operation pin 36 is fixed to the swing arm 33. The distal end side of the operation pin 36 is exposed to the outside of the feeder case 20 through the side plate portion 20 b and the through hole 39 of the reinforcing member 38. The through hole 39 is formed in an arc shape centered on the swing fulcrum of the swing arm 33. The interlocking shaft 37 is supported by the support hole of the spring receiver 40 so as to be slidable up and down. The lower end side of the interlocking shaft 37 is coupled to the distal end side of the operation pin 36 via the coupling member 41 below the spring receiver 40. The connecting member 41 and the operation pin 36 are connected so as to be relatively rotatable. A spring 32 is mounted on the interlocking shaft 37 above the spring receiving body 40. An urging force adjusting screw 42 is attached to the upper end portion of the interlocking shaft 37. A collar 43 is interposed between the biasing force adjusting screw 42 and the upper end of the spring 32. A collar 44 is interposed between the lower end of the spring 32 and the spring receiver 40. The collar 43 and the collar 44 are slidably fitted on the interlocking shaft 37. The spring receiver 40 is supported by the side plate portion 20b via the reinforcing member 38.

  The lower end side of the spring 32 is received and supported by the spring receiver 40 via the collar 44, and the spring 32 uses the spring receiver 40 as a reaction member to apply an elastic restoring force to the biasing force adjusting screw 42 via the collar 43. . As a result, the interlocking shaft 37 is raised and biased by the spring 32, and the operating pin 36 is raised and biased via the connecting member 41. Accordingly, each of the left and right interlocking mechanisms 35 transmits the urging force of the spring 32 to the swing arm 33, and allows the tension member 31 to be pressed and urged by the spring 32 to the endless rotating conveyance body 21.

  The length of the arc-shaped through-hole 39 is such that the tension member 31 is moved between an action position where the endless rotating transport body 21 is tensioned and an action release position where the endless rotating transport body 21 is slackened. It is set to a length that can be allowed.

Each of the left and right swing arms 33 is provided with a support shaft portion 33a. The left and right swing arms 33 are configured to support the tension member 31 by a support shaft portion 33a. The operation pin 36 is provided in a portion of the swing arm 33 between the support shaft 34 and the support shaft portion 33a.
That is, the left and right springs 32 act on a portion between the support shaft 34 as a swing support point of the swing arm 33 and a support shaft portion 33 a as a support point for supporting the tension member 31.

  The left and right tension members 31 are constituted by resin rotating wheels. The left and right tension members 31 are rotatably supported by the support shaft portion 33a.

  A connecting shaft 50 is attached across the left and right swing arms 33. The left and right swing arms 33 are interlocked and connected by the connecting shaft 50, and the left and right tension members 31 are operated up and down in conjunction with each other.

The structure in which the left and right swing arms 33 are interlocked and connected by the connecting shaft 50 is specifically configured as shown in FIG.
Each support shaft portion 33a of the left and right swing arms 33 is formed of a cylindrical member, and a connection hole 33b is provided in each support shaft portion 33a of the left and right swing arms 33. Both ends of the connecting shaft 50 are inserted into the connecting holes 33b, so that the connecting shaft 50 is connected to the left and right swing arms 33 to interlock the left and right swing arms 33.

The left and right swing arms 33 are supported in the mounting posture shown in FIG.
The left and right swing arms 33 are supported in an attachment posture extending from the swing support point 34 toward the moving direction side along the moving direction R of the endless rotating transport body 21 operated by the tension member 31. .

  The start-end-side rotating wheel body 23 is supported by the feeder case 20 based on the support structure shown in FIGS.

  Support members 52 are provided on the inner surface sides of the left and right side plate portions 20b in the feeder case 20 respectively. The support shaft 23a of the starting end side rotating wheel body 23 is rotatably supported by the left and right support members 52.

On the side where the left side plate portion 20b is located, a reinforcing member 53 is fixed to a portion corresponding to the support member 52 on the outer surface side of the side plate portion 20b. The left support member 52 is configured to be fastened and fixed to the side plate portion 20b by three connection bolts 54, 55, and 55a arranged in the conveying direction of the harvested cereal meal. The bolt hole 56 formed in the support member 52, the side plate portion 20b, and the reinforcing member 53 so as to mount one of the three connection bolts 54, 55, 55a is formed in a round hole shape. . The bolt hole 57 formed in the support member 52 so as to mount the remaining two connecting bolts 55, 55a among the three connecting bolts 54, 55, 55a is formed in a round hole shape. The bolt hole 58 formed in the side plate portion 20b and the reinforcing member 53 so as to mount the remaining two connecting bolts 55, 55a among the three connecting bolts 54, 55, 55a is long in the conveying direction of the harvested cereal meal. It is formed in a shape (long hole shape).
As one connecting bolt 54, the foremost connecting bolt is set.

  An operating screw shaft 60 is mounted across one of the two connecting bolts 55, 55 a and the screw receiving member 59. The operating screw shaft 60 and the connecting bolt 55a are connected via a connecting member 61. The connecting member 61 and the connecting bolt 55a are connected so as to be relatively rotatable. The screw receiving member 59 is attached to the reinforcing member 53 and is fixed to the side plate portion 22 b via the reinforcing member 53.

  The connection structure between the right support member 52 and the right side plate portion 20b has the same structure as the connection structure between the left support member 52 and the left side plate portion 20b.

  In normal times, the left and right support members 52 are fastened and connected to the side plate portion 20b by three connecting bolts 54, 55, and 55a. That is, at a normal time, a predetermined position of the feeder case 20 where the starting end side rotating wheel body 23 should be positioned is set by the positioning by the connecting bolt 54, and the starting end side rotating wheel body 23 is fixed at this predetermined position. Thereby, regardless of the tension of the endless rotating transport body 21 applied to the endless rotating transport body 21 by the tension mechanism 30, the start end side rotating wheel body 23 is not displaced relative to the feeder case 20.

  On both the left and right sides, the connecting bolt 54 is removed and the two connecting bolts 55 and 55a are loosened to release the support member 52 from the side plate portion 20b. In this state, by rotating the operation screw shaft 60, one of the two connection bolts 55, 55a is used for interlocking the operation screw shaft 60 and the support member 52, and the operation screw shaft 60, the support member 52 can be slid backward via the connecting member 61 and the connecting bolt 55a, and the starting end side rotating wheel body 23 can be moved from the predetermined position toward the end side rotating wheel body 24 (rear side). That is, if one connecting bolt 54 is removed, the two connecting bolts 55, 55a are simply loosened without being removed, and the start-end-side rotating wheel body 23 is moved from a predetermined position toward the end-side rotating wheel body 24. The rotating conveyance body 21 can be switched from the tension state to the slack state. Thereafter, the operating screw shaft 60 is rotated in the reverse direction to return the support member 52 forward, the connecting bolt 54 is attached and tightened, and the two connecting bolts 55 and 55a are returned to the tightened state. The starting end side rotating wheel body 23 is positioned at a predetermined position of the feeder case 20 by the positioning action of the connecting bolt 54, and the starting end side rotating wheel body 23 can be fixed to the predetermined position.

  As shown in FIGS. 5, 11, and 12, a cylindrical cover 63 is attached to the terminal-side rotating wheel body 24. The cover 63 is configured to cover a portion between the left and right sprockets 24b in the drive shaft 24a. The cover 63 prevents the winding of scraps and the like around the drive shaft 24a.

  Support portions 24c are provided on the sides of the left and right sprockets 24b. Both end portions of the cover 63 are externally fitted to the left and right support portions 24c so as to be relatively rotatable, and the cover 63 is supported by the left and right sprockets 24b. A pair of left and right arms 64 extend from the cover 63 toward the outside of the cover 63. The left and right arms 64 are configured such that, when the cover 63 rotates with the sprocket 24 b, the extended end side engages with the reinforcing member 70 and receives rotation prevention by the reinforcing member 70. The reinforcing member 70 is horizontally mounted on the left and right side plate portions 20b of the feeder case 20 at a location on the upper side in the grain transporting direction with respect to the terminal-side rotating wheel body 24. Even if the cover 63 tries to rotate by the rotation with the sprocket 24b, the cover 63 can be prevented from rotating by using the reinforcing member 70 as a rotation preventing member.

  As shown in FIGS. 11 and 12, the cover 63 is constituted by connecting two divided cover bodies 63a. Each of the two divided cover bodies 63 a is formed in a shape in which the cover 63 is divided in the radial direction by two split surfaces 67. The two split surfaces 67 are arranged at equal intervals in the circumferential direction of the cover 63. The two divided cover bodies 63a are connected by a hinge portion 65, a connecting portion 64a, and a connecting member 66.

  FIG. 13B is a longitudinal side view showing the cover 63 in the opened state. As shown in FIG. 13B, the hinge portion 65 is connected to the cover 63 on both lateral sides of one split surface 67. That is, the hinge part 65 has connected one edge part in the circumferential direction of one division | segmentation cover body 63a, and one edge part in the circumferential direction of the other division | segmentation cover body 63a. The hinge portion 65 connects the two divided cover bodies 63a so as to be able to swing relative to each other, and allows the cover 63 to be switched between an open state and a closed state. When the cover 63 is attached to the terminal-side rotating wheel body 24, the cover 63 is opened to form an opening, and the cover 63 in the open state is fitted into the terminal-side rotating wheel body 24 from the opening. The cover 63 fitted into the end-side rotating wheel body 24 is closed, and both end portions are externally fitted to and supported by the support portions 24c of the left and right sprockets 24b. Each of the two divided cover bodies 63a is produced by molding a resin material. The hinge portion 65 is integrally formed with the two divided cover bodies 63a.

  The connecting portion 64 a and the connecting member 66 are configured to be connected to the cover 63 on both lateral sides of the other split surface 67. That is, the connecting portion 64a and the connecting member 66 are configured to connect the other end portion in the circumferential direction of the one divided cover body 63a and the other end portion in the circumferential direction of the other divided cover body 63a. . The connecting portion 64 a is provided on the base end side of each of the left and right arms 64. That is, the connecting portion 64 a is configured by an attachment portion provided on the proximal end side of the arm 64 for attaching the arm 64 to the cover 63. The connecting portion 64 a and the cover 63 are configured to be connected by a connecting screw 68. The connecting member 66 and the cover 63 are configured to be connected by a connecting screw 69.

[Other Embodiments] (1) In the above-described embodiment, an example in which the endless rotating conveyance body 21 is configured by a chain is shown, but it may be configured by a belt or the like.

(2) In the above-described embodiment, an example in which the resin tension member 31 is employed has been described. However, a metal tension member may be employed.

(3) In the above-described embodiment, an example in which the tension member 31 is configured to be pressed and urged against the endless rotating conveyance body 21 by the spring 32 has been described. However, the tension member 31 is not provided with a spring and is manually adjusted. You may comprise and implement so that the endless rotation conveyance body 21 may be pressed.

(4) In the above-described embodiment, the example in which the drive shaft 24a is provided only in the terminal-side rotating wheel body 24 among the starting-end-side rotating wheel body 23 and the terminal-side rotating wheel body 24 has been described. Only the body 23 or both the start-end-side rotating wheel body 23 and the terminal-side rotating wheel body 24 may be provided with drive shafts. When the driving shaft is provided only on the starting end side rotating wheel body 23, a cover that covers the driving shaft of the starting end side rotating wheel body 23 may be provided. In the case where both the starting end rotating wheel body 23 and the terminal end rotating wheel body 24 are provided with drive shafts, it is preferable to provide a cover that covers both the driving shafts of the starting end rotating wheel body 23 and the terminal end rotating wheel body 24.

(5) In the above-described embodiment, an example in which the left and right swing arms 33 are interlocked and connected by the connecting shaft 50 is shown, but the left and right swing arms 33 may be connected without being interlocked.

(6) In the above-described embodiment, an example in which the spring 32 acts between the swing fulcrum 34 of the swing arm 33 and the support point 33a of the tension member 31 is shown. You may implement by implementing so that a spring may act.

(7) In the above-described embodiment, the example in which the position of the starting end side rotating wheel body 23 can be changed by the sliding operation of the support member 52 has been shown. Also good.

(8) In the above-described embodiment, the example in which the three connecting bolts 54, 55, and 55a are used as the connecting bolt that connects the support member 52 and the side plate portion 20b has been described. However, two or four or more connecting bolts are used. Bolts may be employed for implementation.

(9) In the above-described embodiment, the bolt hole 58 provided in the side plate portion 20 b is formed in a long hole shape so that the connection bolt 55 is attached, and the bolt hole provided in the support member 52 so that the connection bolt 55 is attached. Although an example in which 57 is formed in a round hole shape is shown, the bolt hole provided in the side plate portion 20b may be formed in a round hole shape, and the bolt hole provided in the support member 52 may be formed in a long hole shape. Moreover, you may implement by forming the bolt hole provided in both the side-plate part 20b and the supporting member 52 in the shape of a long hole.
In the above-described embodiment, the example in which the operation force of the operation screw shaft 60 is transmitted to the support member 52 by the connecting bolt 55a has been described. However, a member that transmits the operation force of the operation screw shaft 60 to the support member 52 is separately provided. The connecting bolt 55a may be provided as a dedicated connecting bolt that fixes the support member 52 to the side plate portion 20b. In this case, the bolt hole 58 provided in the side plate portion 20b is formed in a round hole shape so that the connection bolt 55a is attached, and the bolt hole 57 provided in the support member 52 is formed in a long hole shape so that the connection bolt 55a is attached. May be implemented. Moreover, you may implement by forming the bolt hole provided in both the side-plate part 20b and the supporting member 52 in the shape of a long hole.

(10) In the above-described embodiment, the example in which the cover 63 is configured by the two divided cover bodies 63a has been described. However, the cover 63 may be configured by three or more divided cover bodies.

(11) In the above-described embodiment, an example in which the cover 63 is provided may be implemented without the cover 63.

(12) In the above-described embodiment, an example in which the crawler traveling device 2 is provided may be provided with wheels instead of the crawler traveling device 2.

  INDUSTRIAL APPLICABILITY The present invention can be applied to harvesters that harvest various crops such as buckwheat and corn, in addition to combine harvesting rice and wheat.

6 Feeder 7 Harvesting Section 20 Feeder Case 21 Endless Rotating Transport Body 23 Start End Side Rotating Wheel Body 24 End Side Rotating Wheel Body 24a Drive Shaft 24b Sprocket 30 Tension Mechanism 31 Tension Member 32 Spring 33 Swing Arm 50 Connecting Shaft 52 Support Member 54 Connecting bolt 55 Connecting bolt 56 Bolt hole 57 Bolt hole 58 Bolt hole 63 Cover 64 Arm 67 Split surface 70 Reinforcement member R Moving direction

Claims (10)

A harvesting section that harvests the harvested product from the field and sends the harvested product to the rear by a rotating carrier;
A feeder that conveys the harvest from the rotating carrier, and
The feeder includes a feeder case, a starting-end-side rotating wheel provided on the conveying start-end side of the feeder case, a terminal-side rotating wheel provided on the conveying-end side of the feeder case, and the starting-end rotating wheel And left and right endless rotating conveyance bodies wound around the terminal-side rotating wheel body so as to be able to rotate.
The starting end side rotating wheel body and the terminal end side rotating wheel body are fixed at predetermined positions of the feeder case,
One or both of the starting end side rotating wheel body and the terminal end side rotating wheel body includes a drive shaft and left and right sprockets around which the left and right endless rotating conveyance bodies are wound,
A cylindrical cover is fitted around the drive shaft between the left and right sprockets so as to be relatively rotatable, and an arm extends from the cover.
The harvesting machine is configured such that the arm is engageable with a reinforcing member horizontally mounted on the feeder case. The cover is constituted by a plurality of divided cover bodies,
The harvesting machine according to claim 1, wherein a base end side of the arm is connected to the cover on both lateral sides of the split surface of the cover. The feeder includes a tension mechanism that stretches and operates the endless rotating conveyance bodies on the left and right sides,
The tension mechanism is configured to apply a tension operation force to the left and right endless rotating conveyance bodies between the start end side rotating wheel body and the terminal end side rotating wheel body,
The feeder case is configured in a cylindrical shape,
On the outer surface of the side plate portion in the feeder case, a reinforcing member having a substantially U-shaped cross section extending from the bottom plate portion side portion of the feeder case to the top plate portion side of the feeder case,
The reinforcing member is fixed in a state of being applied to the side plate portion,
A through hole is formed across the portion of the reinforcing member applied to the side plate portion and the side plate portion,
3. The harvester according to claim 1, wherein the tension mechanism is supported by the reinforcing member and applies a tension operation force to the endless rotating conveyance body via an operation linking member that is inserted through the through hole.   The harvesting machine according to claim 3, wherein the tension mechanism includes a tension member that stretches the endless rotating transport body and a spring that presses and biases the tension member against the endless rotating transport body.   The tension mechanism interlocks the left and right tension members for separately operating the left and right endless rotating conveyance bodies, the left and right swing arms for supporting the left and right tension members, and the left and right swing arms. The harvesting machine according to claim 3 or 4, further comprising a connecting shaft to be connected. The tension mechanism includes left and right tension members for separately operating the left and right endless rotating conveyance bodies, left and right swing arms for supporting the left and right tension members, and the left and right tension members for the endless movement. Left and right springs for swinging and biasing the left and right swing arms separately to press and bias the rotating transport body,
The left and right swing arms are located inside the feeder case,
The harvester according to any one of claims 3 to 5, wherein the left and right springs are located outside the feeder case.   The harvester according to claim 6, wherein the left and right springs are configured to act on a portion between a swing fulcrum of the swing arm and a support point that supports the tension member.   8. The left and right swing arms extend from each swing support point toward the moving direction side along the moving direction of the endless rotating transport body. Harvesting machine.   Of the top plate portion, the portion located above the tension member and the bottom plate portion are spaced apart from the tension member in the conveyance start end side and conveyance end side, respectively. The harvester according to any one of claims 4 to 8, wherein a shape of the top plate portion in a side view bulges upward so as to be wider than a distance between the bottom plate portion and the bottom plate portion. The support member that supports the starting-end-side rotating wheel body and the feeder case are configured to be connected by a plurality of connection bolts arranged along the harvested conveyance direction,
One of the plurality of connection bolts is configured to be attached to a round hole-shaped bolt hole formed in the support member and the feeder case,
The remaining connection bolts of the plurality of connection bolts are connected to a bolt hole formed in one of the support member and the feeder case, and a crop conveyance direction formed in the other of the support member and the feeder case. The harvesting machine according to any one of claims 1 to 9, wherein the harvesting machine is configured to be mounted over a long bolt hole.

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