JP2018088899A - Harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting machine which can be sufficed by the no reinforcement of a carrier device, even if the weight of the harvesting machine increased, or which can be sufficed by a reinforcement of a small scale even if reinforced.SOLUTION: In the rear end 40R of a transport device 40, the vertical width H of a transportation case 43 is made wider at a front side. Of the transport device 40, in a front side part 40F positioned on the front side of the rear end part 40R, the vertical width H of the transportation case 43 is made narrower on the front side over the longitudinal length of the front side part.SELECTED DRAWING: Figure 9

Description

  The present invention provides a harvesting machine comprising: a harvesting unit provided in front of a traveling machine body; and a transport device that is connected to the harvesting part and transports a harvested product harvested by the harvesting unit in a rearward direction of the traveling machine body. About.

  Conventionally, for example, there is a combine shown in Patent Document 1 as the harvesting machine. This combine is provided with a feeder as a transport device. The feeder is provided with a feeder case as a transport case. In this feeder, the vertical width of the feeder case is narrower toward the front side at the front end portion of the feeder, and the vertical width of the feeder case is narrower toward the rear side at the rear side portion located behind the front end portion of the feeder. Yes. That is, the vertical width of the feeder case is maximized at the front end of the feeder.

JP 2016-49097 A

  The heavier the harvesting part, such as the wider harvesting width of the harvesting part, the heavier the load of the harvesting part applied to the transporting device, so the rigidity at the rear end of the transporting device is increased, and the transporting device is firmly attached to the traveling machine body. It needs to be supported. In the conventional case, it is necessary to take reinforcement measures such as increasing the thickness of the members constituting the transport case, and to improve the rigidity at the rear end of the transport device.

  The present invention provides a harvesting machine that does not need to reinforce the conveying device even if the weight of the harvesting portion increases, or that can be reinforced only on a small scale even if it is reinforced.

In the harvester according to the invention,
A harvesting section provided in front of the traveling aircraft;
A transport device that is connected to the harvesting unit and transports the harvested product harvested by the harvesting unit toward the traveling machine body, and
A driving wheel provided at one of the front end and the rear end of the transport device, and a driven wheel provided at the other of the front end and the rear end of the transport device. An endless rotating transport body wound around the drive wheel body and the driven wheel body, and a transport case for accommodating the driving wheel body, the driven wheel body, and the endless rotating transport body. ,
In the rear end portion, the vertical width of the transport case is wider toward the front side, and in the front side portion of the transport device located on the front side of the rear end portion, the vertical width of the transport case is It is the same as the vertical width of the front end portion of the rear end portion over the entire length of the front side portion, or is narrower toward the front side.

  According to this configuration, the vertical width of the transfer case is maximized at a location closer to the rear end of the transfer device than before, so the vertical width at the rear end of the transfer device is wider than the conventional transfer device, The rigidity of the rear end is improved.

  Since the rigidity of the rear end of the transport device is improved, even if the weight of the harvesting part increases to some extent, even if it is reinforced, the transport device can be It can be firmly supported by the traveling aircraft. In other words, even when the weight of the harvesting part increases to some extent, it is not necessary to reinforce the transport device, or even if it is reinforced, a small-scale reinforcement is sufficient and the cost is low.

  In the present invention, a portion of the endless rotating transport body located at a lower portion in the transport case constitutes a transport path portion, and of the endless rotating transport body, an upper portion in the transport case. The positioned portion constitutes a return path portion, and the transport device is provided with a tension ring body that stretches and operates the endless rotating transport body, and the tension ring body is located above and below the transport case in the transport case. It is preferable that the widest portion is provided in the loop of the endless rotating transport body, and the rear portion of the return path portion is pressed toward the outside of the loop of the endless rotating transport body.

  According to this configuration, the tension wheel can be operated over a wide operating range by utilizing the portion of the internal space of the transfer case that has the widest vertical width as the working space of the tension wheel. Even if the length of the endless rotating transport body changes significantly, the endless rotating transport body can be brought into an appropriate tension state by the operation of the wide operating range of the tension ring body.

  In the present invention, on the top plate portion of the transport case at the rear end portion, from the upper part of the wheel body located on the rear side of the driving wheel body and the driven wheel body to the upper part of the tension wheel body. It is preferable that an inspection port formed in a range of the region and a lid for opening and closing the inspection port are provided.

  According to this configuration, the upper part of the range from the ring body to the tension ring body can be opened by opening the inspection port, so check the ring body, the tension ring body, and between the ring body and the tension ring body. easy.

  In the present invention, it is preferable that a vertical reinforcing frame extending in the vertical direction is provided on the side wall portion of the transfer case, and the vertical reinforcing frame is attached to the side wall portion of the transfer case at the rear end portion. It is.

  According to this configuration, the rigidity of the transport case can be ensured by the reinforcement by the vertical reinforcement frame regardless of the formation of the inspection port.

  In the present invention, a support arm is provided inside the transport case so as to be swingable in the vertical direction on the side wall of the transport case and support the tension ring body. It is preferable that a vertical reinforcing frame extending along the vertical reinforcing frame is provided, and the support arm is pivotally supported by the vertical reinforcing frame.

  According to this configuration, the support arm is firmly supported by the side wall portion and the vertical reinforcing frame against the tension reaction force applied to the tension ring body, and tension can be appropriately applied to the endless rotating conveyance body.

  In the present invention, a horizontal reinforcing frame attached to the bottom of the transfer case so as to straddle the transfer case is provided, and a lower end of the vertical reinforcing frame is connected to an end of the horizontal reinforcing frame. It is preferable.

  According to this configuration, the conveyance case is reinforced while the vertical reinforcement frame and the horizontal reinforcement frame are connected and reinforced, so that the conveyance case can be effectively reinforced.

  In the present invention, a support arm that is supported on the side wall portion of the transfer case so as to swing up and down and supports the tension ring body is provided inside the transfer case, and the support arm is provided outside the transfer case. It is preferable that a spring-type urging mechanism for urging the urging force toward the tension operation side is provided, and the urging mechanism is provided in a state of being located below the support arm.

  According to this configuration, it is possible to easily operate the urging mechanism such as adjusting the spring force by reducing the height of the urging mechanism to the ground.

  In the present invention, the endless rotating transport body is provided on both left and right sides of the inside of the transport case, and as the tension wheel body, a left tension wheel body for operating the left endless rotating transport body, and A left-side tension ring body is provided that includes a right-side tension ring body that stretches and operates the right-side endless rotating conveyance body, and is supported by the left-side wall portion of the conveyance case so as to swing up and down as the support arm. A support arm; and a right support arm that is supported by the right wall portion of the transfer case so as to swing up and down and supports the right tension ring body. A left side urging mechanism that urges the right side support arm and a right side urging mechanism that urges the right side support arm toward the operation side, and one of the left side urging mechanism and the right side urging mechanism. The biasing mechanism is provided in a state of being positioned below the corresponding support arm of the left support arm and the right support arm, and the other biasing mechanism of the left bias mechanism and the right bias mechanism is provided. The biasing mechanism is provided in a state of being positioned above the corresponding support arm among the left support arm and the right support arm, and the power that transmits power to the harvesting unit below the other biasing mechanism. It is preferable that the transmission mechanism passes.

  According to this configuration, it is possible to reduce the ground height of one urging mechanism to facilitate the operation of one urging mechanism, while preventing the other urging mechanism and the power transmission mechanism from interfering with each other.

  In the present invention, a support shaft extending between the left support arm and the right support arm is provided, and the left support arm and the right support arm can swing about the support shaft as a swing support point. The spring of the left side biasing mechanism and the spring of the right side biasing mechanism are both compression springs, or both are tension springs, and the left side biasing mechanism and the right side biasing mechanism are A spring in one of the biasing mechanisms is coupled to a portion of the support arm that is opposite to the side on which the tension ring body is positioned with respect to the support shaft, and the left biasing mechanism and the right biasing mechanism. The spring in the other urging mechanism among the urging mechanisms is located on the same side of the support arm as the side where the tension ring body is located with respect to the support shaft. It is preferable to have been connected.

  The spring in one of the left side biasing mechanism and the right side biasing mechanism is connected to a portion of the support arm that is opposite to the side on which the tension ring body is located with respect to the support shaft. Since the spring in the other urging mechanism of the urging mechanism and the right urging mechanism is connected to a portion of the support arm that is located on the same side as the side where the tension ring body is located with respect to the support shaft, Even if compression springs or tension springs with the same specifications are used as the springs of the urging mechanism and the right urging mechanism, the spring of one urging mechanism is positioned below the corresponding support arm, and the other The left tension wheel body and the right tension wheel body can be provided with the same tension operating force while the spring of the biasing mechanism is positioned above the corresponding support arm. By adopting springs of the same specification for the left side urging mechanism and the right side urging mechanism, the endless rotating conveyance body on the left and right sides can be tensioned at a low cost.

  In the present invention, at the bottom of the transfer case, a lower inspection port opened at a position located below the ring located on the front side of the driving wheel and the driven wheel at the bottom of the transfer case; A lid capable of closing the lower inspection port, and a front sideways frame extending along the widthwise direction of the transfer case is provided at a front side of the lower inspection port at the bottom of the transfer case. And rear lateral frames extending along the widthwise direction of the transfer case at the rear side of the lower check port at the bottom of the transfer case, and left and right sides of the lower check port at the bottom of the transfer case It is preferable that left and right front-rear frames extending over the front lateral frame and the rear lateral frame are provided in this part.

  According to this configuration, even if the lower inspection opening is opened at the bottom, the strength of the bottom can be prevented from being lowered by the front horizontal frame, the rear horizontal frame, and the left and right front-rear frames, so that the rigidity of the bottom is ensured. On the other hand, it is possible to easily inspect the ring body from below.

  In the present invention, the outer periphery of the lid body is provided with a contact portion that is in contact with the front-rear frame from below, and the lid body is oriented in the front-rear direction by a screw member that passes through the contact portion. It is preferable to be attached to the frame.

  According to this configuration, the lid body can be firmly fixed to the front and rear frame by the screw member.

  In the present invention, the screw member is attached in a state where the head of the screw member is located inside the transfer case, and a hole for receiving the head is formed in the bottom of the transfer case. Is preferred.

  According to this configuration, since the head of the screw member is accommodated in the hole, it is difficult for the harvested product to be touched to the head, and it is difficult to wear the screw member.

It is a left view which shows the whole combine. It is a top view which shows the whole combine. It is a diagram which shows a transmission structure. It is a perspective view which shows a conveying apparatus. It is a top view which shows a conveying apparatus. It is a left view which shows a conveying apparatus. It is a right view which shows a conveying apparatus. It is a bottom view which shows a conveying apparatus. It is the vertical left side surface of a conveying apparatus. It is the vertical right side surface of a conveying apparatus. It is a top view which shows a left tension apparatus and a right tension apparatus. It is a front view showing a left tension device and a right tension device. It is a left view which shows a left tensionon apparatus. It is a right view which shows a right tension apparatus. It is a vertical front view in the rear-end part of a conveying apparatus. It is a bottom view of the conveyance apparatus in the site | part in which a lower inspection port is located. It is a vertical left view which shows the cover body of the state which closed the lower inspection port. It is a vertical left view which shows the cover body of the state which closed the lower inspection port. It is the XIX-XIX cross-sectional arrow view of FIG.

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 left side view showing the entire combine. FIG. 2 is a plan view showing the entire combine. 1 and 2, the direction [F] is the front side of the traveling aircraft body, the direction [B] is the rear side of the traveling aircraft body, the direction [L] is the left side of the traveling aircraft body, and the direction [R] is the right side of the traveling aircraft body. It is defined as

  As shown in FIGS. 1 and 2, the combine includes a traveling machine body 2 on which the left and right crawler traveling devices 1 are drivably mounted. A boarding type driving unit 3 is formed at the front of the traveling machine body 2. The driving unit 3 includes a cabin 4 that covers the boarding space. A cutting pretreatment device 6 is connected to the front portion of the machine body frame 5 of the traveling machine body 2. A threshing device 7 and a grain tank 8 are provided at the rear of the traveling machine body 2.

  The pre-cutting processing device 6 includes a harvesting unit 10 located in front of the traveling machine body 2 and a transport device 40 having a front end connected to the rear part of the harvesting unit 10. A rear end portion 40 </ b> R (see FIG. 4) of the transport device 40 is connected to the support portion of the body frame 5. The transport device 40 can swing up and down with respect to the traveling machine body 2 with a connecting shaft core P extending in the lateral direction of the traveling machine body as a swing fulcrum. The elevating cylinder 9 is connected to the transport device 40 and the cylinder support 5 a of the machine body frame 5. The conveying device 40 is swung by the expansion and contraction operation of the elevating cylinder 9. By swinging the transport device 40, the harvesting unit 10 can be lifted and lowered between the lowered work position and the raised non-work position.

  In this combine, harvesting work such as rice and wheat can be performed by running the traveling machine body 2 with the harvesting unit 10 lowered to the lowering work position. That is, when the work travels, the harvesting unit 10 splits the planted culm into a planted culm to be harvested and a planted culm to be harvested by the left and right dividers 11. The tip side of the planted culm to be cut is scraped backward by the rotary reel 12. The stock of the planted cereal in this scraped state is cut by the clipper-type reaping device 13, and the planted cereal is harvested. The harvested cereal meal is laterally fed to a predetermined place by the lateral feed auger 14. The harvested cereal culm positioned at a predetermined location is scraped and supplied to the front end portion of the transport device 40 by the scraping arm 15 provided in the intermediate portion of the lateral feed auger 14. In the transport device 40, the whole of the harvested cereal pods supplied from the scraping arm 15 to the tip of the harvested cereal is transported rearwardly and upwardly of the traveling machine body and put into the threshing device 7.

  In the threshing device 7, the harvested cereal mash is handled by the handling cylinder 7a, and a sorting process for sorting the grains obtained by the handling process from dust is performed. The selected grain is supplied to the grain tank 8 and stored by the cerealing device 7b. The stored grain can be taken out by an unloading device 8a using a screw conveyor.

A transmission structure for transmitting power to the pre-cutting processing device 6 will be described.
In this transmission structure, as shown in FIG. 3, the power of the output shaft 20 a of the engine 20 is transmitted to the input shaft 22 a of the mission 22 by the good transmission mechanism 21, and the power of the input shaft 22 a is transmitted by the positive rotation transmission mechanism 23. It is transmitted to the conveyance drive shaft 42. The transport drive shaft 42 is rotatably supported at the rear end portion of the transport device 40 and drives an endless rotating transport body 44 (see FIG. 9) of the transport device 42 described later. The power of the output shaft 22 b of the mission 22 is transmitted to the transport drive shaft 42 by the reverse rotation transmission mechanism 24. The power of the conveyance drive shaft 42 is transmitted to the harvesting unit 10 by the power transmission mechanism 30 for the harvesting unit.

  In the good transmission mechanism 21, the power of the output shaft 20 a of the engine 20 is transmitted to the tang 25 of the threshing device 7 by the tang transmission mechanism 25 a, and the motive power of the tang 25 is transmitted to the input shaft 22 a of the mission 22 by the mission transmission mechanism 26. . The red pepper transmission mechanism 25a and the mission transmission mechanism 26 are configured using an endless belt.

  In the forward rotation transmission mechanism 23, the power of the input shaft 22 a of the mission 22 is transmitted to the transport drive shaft 42 as power for driving the transport device 40 in the forward rotation direction. The forward rotation transmission mechanism 23 is constituted by a belt tension clutch, and can be switched between an on state and a off state. By switching the normal rotation transmission mechanism 23 between the on state and the off state, the transmission of the positive rotation power to the transport drive shaft 42 can be switched between the on state and the off state.

  In the reverse rotation transmission mechanism 24, the power of the output shaft 22 b of the mission 22 is transmitted to the input shaft 28 a of the barrel drive mechanism 28 via the endless belt 27. In the barrel drive mechanism 28, the power in the forward rotation direction of the input shaft 28a is converted into power in the reverse rotation direction by the bevel gear mechanism and transmitted to the output shaft 28b. Power in the reverse rotation direction of the output shaft 28b is transmitted to the transport drive shaft 42 via the reverse rotation transmission unit 29 as power for driving the transport device 40 in the reverse rotation direction. The reverse rotation transmission unit 29 is configured by a belt tension clutch and can be switched between an on state and a cut state. By switching the reverse rotation transmission unit 29 between the on state and the off state, the transmission of the reverse rotation power to the transport drive shaft 42 can be switched between the on state and the off state.

  In the power transmission mechanism 30 for the harvesting section, the power of the transport drive shaft 42 is transmitted to the distribution transmission shaft 32 by the harvesting upper power transmission section 31, and is transmitted from the distribution transmission shaft 32 to the rotary reel 12 by the reel transmission mechanism 33. The shaft 32 is transmitted to the lateral feed auger 14 by the auger transmission mechanism 34, and is transmitted from the distribution transmission shaft 32 to the cutting device 13 by the cutting transmission mechanism 35.

  The harvesting success transmission unit 31 extends in the direction along the front-rear direction of the transport device 40 on the right lateral side of the transport device 40. The harvesting superior transmission section 31 includes an endless chain 36 that interlocks and connects the right end portion of the transport drive shaft 42 and the left end portion of the distribution transmission shaft 32. The reel transmission mechanism 33 includes a reel clutch 33a that switches power transmission to the rotary reel 12 between an on state and a cut state, and a continuously variable transmission that continuously transmits the power from the reel clutch 33a to the rotary reel 12. 33b is provided. By switching the reel clutch 33a between the on state and the off state, the rotary reel 12 can be switched between the driving state and the stopped state. The continuously variable transmission 33b is configured by a belt continuously variable transmission using a split pulley and an endless belt.

  By switching the reverse rotation transmission unit 29 to the cut state and switching the normal rotation transmission mechanism 23 to the on state, the transport device 40 can be driven in the normal rotation direction. The conveyance device 40 can be driven in the reverse rotation direction by switching the reverse rotation transmission unit 29 to the on state and switching the normal rotation transmission mechanism 23 to the cut state.

The transport device 40 will be described.
As shown in FIG. 4, the transport device 40 includes a transport case 43 and two endless rotating transport bodies 44.

  As shown in FIGS. 4 to 10, the transport case 43 includes a bottom portion 43 </ b> A, left and right side wall portions 43 </ b> B, and a top plate portion 43 </ b> C. The transport case 43 is configured in a cylindrical shape. An entrance 45 is formed at the front end of the transport case 43. A discharge port 46 is formed at the rear end of the transport case 43.

  As shown in FIGS. 4, 5, 6, and 7, a connecting frame 47 is provided at the front end of the transport case 43. As shown in FIGS. 4 and 5, the connection frame 47 includes a left and right vertical connection frame portion 47a, an upper horizontal connection frame portion 47b connected to the upper end of the left and right vertical connection frame portion 47a, and a left and right vertical direction. A downward horizontal connection frame portion 47c connected to the lower end portion of the connection frame portion 47a is provided. The connection frame 47 is configured in a frame shape surrounding the inlet 45.

  By connecting the connecting frame 47 to the rear wall portion 16 (see FIG. 1) of the harvesting unit 10, the front end portion of the transport device 40 is connected to the rear wall portion 16 of the harvesting unit 10. When the front end portion of the conveying device 40 and the rear wall portion 16 of the harvesting portion 10 are connected, the inlet 45 communicates with the cereal discharge port formed in the rear wall portion 16.

  As shown in FIGS. 4 and 5, a connecting cylinder shaft 41 is provided at both left and right lateral ends of the rear end portion 40 </ b> R of the transport device 40. The left and right connecting cylinder shafts 41 extend laterally outward from the side wall 43B. The connecting cylinder shaft 41 is externally fitted concentrically to the transport drive shaft 42. By connecting the left and right connecting cylindrical shafts 41 to the support portion of the body frame 5, the transport device 40 is connected to the traveling machine body 2 with the shaft core of the transport driving shaft 42 as the connecting shaft core P, and the connecting shaft core P is used as the connecting shaft core P. It swings up and down with respect to the traveling machine body 2 as a swing fulcrum.

  As shown in FIGS. 9 and 10, in the rear end portion 40 </ b> R of the transport device 40, the transport case 43 is in a state where the vertical width H (the distance between the bottom 43 </ b> A and the top plate portion 43 </ b> C) is wider toward the front side. It is configured. The transport case 43 is configured such that the vertical width H of the transport case 43 becomes narrower toward the front side in the front side portion 40F located in front of the rear end portion 40R in the transport device 40. The closer to the front end portion 43Cf of the top plate portion 43C from the front end portion 40Rf of the rear end portion 40R, the narrower the vertical width H of the transfer case 43 is. In the present embodiment, the front side portion 40F of the transport apparatus 40 employs a configuration in which the vertical width H of the transport case 43 becomes narrower toward the front side, but the vertical width H of the transport case 43 in the front side portion 40F of the transport apparatus 40. However, you may employ | adopt the structure which is the same as the up-and-down width in front end location 40Rf of the rear-end part 40R over the front-back whole length of the front side part 40F. A configuration in which the vertical width of the transfer case 43 at the front end portion 40Rf of the rear end portion 40R is wider than the vertical width of the transfer case 43 at the front side portion 40F, and is the widest vertical width, or the rear end portion 40R A configuration in which the vertical width of the transfer case 43 at the front end portion 40Rf is the same as the vertical width of the transfer case 43 at the front side portion 40F and the widest vertical width may be employed.

  As shown in FIGS. 9 and 10, the two endless rotating transport bodies 44 are provided dispersed on the left and right sides inside the transport case 43. The two endless rotating transport bodies 44 are wound around a driven wheel body 48 provided at the front end portion of the transport device 40 and a drive wheel body 49 provided at the rear end portion 40R of the transport device 40. Locking conveyance portions 44 a are provided at a plurality of locations in the longitudinal direction of the endless rotation conveyance body 44. The locking conveyance portion 44a of the left endless rotation conveyance body 44 and the locking conveyance portion 44a of the right endless rotation conveyance body 44 are integrally formed. The left and right endless rotating transport body 44 is constituted by an endless chain.

  The rotation support shaft 48a of the driven wheel body 48 is supported by the left and right side wall portions 43B. The driven wheel body 48 is rotatable with respect to the transport case 43 with an axis extending in the direction along the transport case lateral direction of the rotation support shaft 48a as a rotation center.

  The drive wheel body 49 includes a left chain sprocket portion 49a with which the left endless rotating carrier 44 is engaged, a right chain sprocket portion 49a with which the right endless rotating carrier 44 is engaged, A rotation support shaft 49b is provided for supporting the chain sprocket portion 49a in an interlocked state. The rotation support shaft 49b is supported by the left and right side wall portions 43B via the left and right connecting cylinder shafts 41. The rotation support shaft 49 b is configured by the transport drive shaft 42. The drive wheel body 49 is rotationally driven by the transport drive shaft 42 about the axis extending in the direction along the transport case lateral direction of the rotation support shaft 49b, and is driven in conjunction with the endless rotating transport body 44 on the left and right sides. .

  The left endless rotation conveyance body 44 is tensioned by the left tension ring body 51 of the left tension device 50, and is maintained in a tension state that can be driven and conveyed. The right endless rotation conveyance body 44 is tensioned by the right tension ring body 61 of the right tension device 60 and is maintained in a tension state that can be driven and conveyed.

  When the transport drive shaft 42 is driven to rotate in the forward rotation direction, the left endless rotation transport body 44 and the right endless rotation transport body 44 are driven in the forward rotation direction S (see FIGS. 9 and 10). In the left endless rotating transport body 44 and the right endless rotating transport body 44, a portion of the endless rotating transport body 44 located in the lower portion of the transport case constitutes a transport path portion 44F. The portion of the endless rotating transport body 44 located at the upper part in the transport case constitutes the return path section 44R.

  In the transport device 40, when driven in the forward rotation direction, the left and right endless rotation transport body 44 is driven in the forward rotation direction, and the transport path portion 44F of the left and right endless rotation transport body 44 is transported. 40 is transferred toward the rear side. As a result, the harvested cereal meal fed from the harvesting section 10 through the entrance 45 into the front end of the transport case 43 is locked by the locking transport section 44a of the transport path section 44F of the endless rotating transport body 44 on the left and right sides. It is conveyed rearward along the bottom 43 </ b> A of the conveying case 43 by conveying, discharged backward from the discharge port 46, and supplied to the threshing device 7.

The left tension device 50 will be described.
As shown in FIGS. 6, 10, 11, and 12, the left tension device 50 includes a left tension ring body 51 and a left urging mechanism 55.

  The left tension wheel 51 is a loop of the left endless rotating transport body 44 at a portion of the transport case 43 where the vertical width H of the transport case 43 is the widest (portion where the front end portion 40Rf of the rear end portion 40R is located). Is provided inside. The left tension ring body 51 is supported by the free end portion of the left support arm 52 so as to be relatively rotatable. The left support arm 52 is supported on the left wall 43 </ b> B of the transfer case 43 via a support shaft 53 inside the transfer case 43. The left support arm 52 can swing up and down with respect to the transfer case 43 with the support shaft 53 as a swing support point X. The left tension ring 51 can swing and move in the inner and outer directions of the loop of the left endless rotating transport body 44 with respect to the transport case 43 with the support shaft 53 as a swing support point X.

  As shown in FIGS. 11, 12, and 13, the left urging mechanism 55 is provided on the left lateral outer side of the transport case 43. The left urging mechanism 55 is located below the left support arm 52.

  The left urging mechanism 55 is provided with a left urging rod 56 and a left compression spring 57 as a left urging spring. Of the left support arm 52, the left support arm 52 and the upper end side of the left urging rod 56 are located on the side opposite to the side where the left tension ring 51 is located with respect to the support shaft 53 (swing support point X). Are connected through a connecting rod 56a so as to be relatively rotatable. The connecting rod 56a is inserted through a long hole 58 formed in the left side wall portion 43B. The connecting rod 56a can be moved up and down in the elongated hole 58. The lower bias side of the left urging rod 56 is inserted through the fixed spring receiving member 59 so as to be slidable up and down. The fixed spring receiving member 59 is fixed to the outer surface side of the left side wall 43B. The compression spring 57 is disposed between the spring receiving portion 56 b of the left urging rod 56 and the fixed spring receiving member 59 so as to be fitted to the left urging rod 56. The compression spring 57 is connected to a portion of the left support arm 52 opposite to the side on which the left tension ring 51 is located with respect to the support shaft 53 (swing fulcrum X) by a left urging rod 56.

  In the left tension device 50, the left urging mechanism 56 is urged downward by the compression spring 57 in the left urging mechanism 55, so that the left support arm 52 is oscillated and urged to the tension side by the compression spring 57. The left tension wheel 51 is urged to move upward. As a result, the rear end portion of the return path portion 44R of the left endless rotating transport body 44 is pressed toward the outside of the loop of the endless rotating transport body 44 by the left tension ring body 51, and the left endless rotating transport body 44 is pressed. To operate.

The right tension device 60 will be described.
As shown in FIGS. 7, 9, 11, and 12, the right tension device 60 includes a right tension ring body 61 and a right urging mechanism 65.

  The right tension ring body 61 is a loop of the right endless rotating transport body 44 at a portion of the transport case 43 where the vertical width H of the transport case 43 is the widest (portion where the front end portion 40Rf of the rear end portion 40R is located). Is provided inside. The right tension ring body 61 is supported by the free end portion of the right support arm 62 so as to be relatively rotatable. The right support arm 62 is supported on the right wall 43 </ b> B of the transfer case 43 via the support shaft 53 inside the transfer case 43. The right support arm 62 can swing up and down with respect to the transport case 43 with the support shaft 53 as a swing support point X. The right tension ring body 61 can swing and move in the inner and outer direction of the loop of the right endless rotating transport body 44 with respect to the transport case 43 with the support shaft 53 as the swing support point X.

  As shown in FIGS. 11, 12, and 13, the right urging mechanism 65 is provided on the right lateral outer side of the transport case 43. The right urging mechanism 65 is positioned above the right support arm 62. As shown in FIGS. 3, 7, and 12, under the right side urging mechanism 65, the harvesting power transmission unit 31 in the power transmission mechanism 30 for the harvesting unit passes in the front-rear direction.

  The right urging mechanism 65 is provided with a right urging rod 66 and a right compression spring 67 as a right urging spring. Of the right support arm 62, the right support arm 62 and the upper end side of the right biasing rod 66 are located on the same side as the side on which the right tension ring body 61 is located with respect to the support shaft 53 (swing fulcrum X). Are connected via a connecting rod 66a so as to be relatively rotatable. The connecting rod 66a is inserted through a long hole 68 formed in the right side wall portion 43B. The connecting rod 66a can be moved up and down in the elongated hole 68. The upper end side of the right urging rod 66 is inserted through the fixed spring receiving member 69 so as to be slidable up and down. The fixed spring receiving member 69 is fixed to the outer surface side of the right side wall portion 43B. Specifically, the fixed spring receiving member 69 is fixed to the right side wall portion 43B via a second vertical reinforcing frame 74 described later. The compression spring 67 is disposed between the spring receiving portion 66 b of the right urging rod 66 and the fixed spring receiving member 69 so as to be fitted to the right urging rod 66. The compression spring 67 is connected to a portion of the right support arm 62 on the same side as the side on which the right tension ring body 61 is located with respect to the support shaft 53 (swinging fulcrum X) by a right urging rod 66.

  In the right tension device 60, the right biasing mechanism 66 is lifted and biased by the compression spring 67 in the right biasing mechanism 65, so that the right support arm 62 is oscillated and biased to the tension side by the compression spring 67. The right tension ring body 61 is urged to move upward. As a result, the rear end portion of the return path 44R of the right endless rotating transport body 44 is pressed toward the outside of the loop of the endless rotating transport body 44 by the right tension ring body 61, and the right endless rotating transport body 44 is pressed. To operate.

  As shown in FIGS. 11 and 12, the support shaft 53 extends over the left support arm 52 and the right support arm 62. As shown in FIG. 13, the swing fulcrum X of the left support arm 52 and the swing fulcrum X of the right support arm 62 are located on the same line. The distance from the swing support point X to the wheel support point 52a in the left support arm 52 is L1, and the distance RL2 from the swing support point X to the spring action 52b in the left support arm 52 is set. As shown in FIG. 14, the distance from the swing support point X to the wheel support point 62a in the right support arm 62 is R1, and the distance R2 from the swing support point X in the right support arm 62 to the spring action point 62b. Distance L1 = distance R1, and distance L2 = distance R2. The compression spring 57 of the left urging mechanism 55 and the compression spring 67 of the right urging mechanism 65 have the same characteristics (spring coefficient, wire diameter, coil diameter, length).

  As shown in FIGS. 4, 5, and 9, an upper front inspection port 70 and a lid 71 that opens and closes the upper front inspection port 70 are formed on the top plate portion 43 </ b> C of the conveyance case 43 at the front end portion of the conveyance device 40. Is provided. The upper front inspection port 70 is formed in a portion of the top plate portion 43 </ b> C at an upper rear portion of the driven wheel body 48. The lid 71 is configured to be removable. The lid 71 is provided with a transparent plate portion 71a.

  4-9, the 1st vertical reinforcement frame 72 extended in the up-down direction of the conveyance case 43 is attached to the outer surface side of the left-right side wall part 43B of the conveyance case 43 in the front end part of the conveying apparatus 40. As shown in FIG. . The left and right first vertical reinforcing frames 72 are attached to portions of the left and right side wall portions 43B located below the upper front inspection port 70 in a side view. A first lateral reinforcing frame 73 is attached to the outer surface side of the bottom 43 </ b> A at the front end of the transport device 40 so as to straddle the transport case 43 from side to side. The lower ends of the left and right first vertical reinforcing frames 72 are connected to the end portions of the first horizontal reinforcing frame 73. A portion including the inspection port 70 in front of the transport case 43 is reinforced by a first vertical reinforcing frame 72 and a first horizontal reinforcing frame 73. In the present embodiment, the left and right first vertical reinforcing frames 72 are constituted by members whose cross-sectional shape is a groove shape. The first lateral reinforcing frame 73 is made of a rectangular pipe material. The first vertical reinforcing frame 72 and the first horizontal reinforcing frame 73 are not limited to the groove-shaped member and the rectangular pipe material, and members having various shapes such as an angle member and a circular pipe material can be employed.

  4-8, the 2nd vertical reinforcement frame 74 extended in the up-down direction of the conveyance case 43 is attached to the outer surface side of the left-right side wall part 43B of the conveyance case 43 in the intermediate part of the conveying apparatus 40. As shown in FIG. Yes. A second lateral reinforcing frame 75 is mounted on the outer surface side of the bottom 43A of the transport case 43 in the intermediate portion of the transport device 40 so as to straddle the transport case 43 from side to side. The lower ends of the left and right second vertical reinforcing frames 74 are connected to the end portions of the second horizontal reinforcing frame 75. In the present embodiment, the left and right second vertical reinforcing frames 74 and the second horizontal reinforcing frames 75 are constituted by members having a cross-sectional shape of a groove. The second vertical reinforcing frame 74 and the second horizontal reinforcing frame 75 are not limited to groove-shaped members, and members having various shapes such as circular or rectangular pipe members and angle members can be employed.

  As shown in FIGS. 4, 11, and 13, the left and right second vertical reinforcing frames 74 are provided with shaft support portions 74 a. The left and right end portions of the support shaft 53 are supported by the left and right shaft support portions 74a. The left support arm 52 and the right support arm 62 are pivotally supported by the left and right second vertical reinforcing frames 74 via the support shaft 53. A portion for supporting the left support arm 52 of the left side wall portion 43B and a portion for supporting the right support arm 62 of the right side wall portion 43B are reinforced by the second vertical reinforcing frame 74 and the second lateral reinforcing frame 75. .

  As shown in FIGS. 4, 5, and 9, the upper and rear inspection ports 76 and the lid 77 that opens and closes the upper and rear inspection ports 76 are formed in the top plate portion 43 </ b> C of the conveyance case 43 at the rear end 40 </ b> R of the conveyance device 40. And are provided.

  The upper and rear inspection ports 76 are located above the driving wheel body 49 (the part corresponding to the driving wheel body 49) from the upper part of the top plate 43C to the left tension wheel body 51 and the upper part of the right tension wheel body 61 (left tension). (Location corresponding to the ring body 51 and the right tension ring body 61). The left tension wheel body 51, the right tension wheel body 61, the driving wheel body 49, and the like can be inspected from above the transfer case 43 through the upper and rear inspection ports 76.

  The lid 77 is configured to be removable. The lid 77 is provided with a transparent plate portion 77a. Even with the lid 77 closed, the left tension wheel 51, the right tension wheel 61 and the driving wheel 49 can be viewed from above the transport case 43 through the transparent plate 77a.

  As shown in FIGS. 4, 6, 7, 8, and 15, a third vertical portion extending in the vertical direction of the transport case 43 on the outer surface side of the left and right side wall portions 43 </ b> B of the transport case 43 in the rear end portion 40 </ b> R of the transport device 40. A reinforcing frame 78 is attached. The left and right third vertical reinforcing frames 78 are attached to portions of the side wall portion 43B that are located below the upper and rear inspection ports 76 in a side view. A third lateral reinforcing frame 79 is attached to the outer surface side of the bottom 43A of the transport case 43 at the rear end portion 40R of the transport device 40 so as to straddle the transport case 43 from side to side. The lower ends of the left and right third vertical reinforcing frames 78 are connected to the end portions of the third horizontal reinforcing frame 79. A portion including the inspection port 76 at the upper and rear of the transport case 43 is reinforced by a third vertical reinforcing frame 78 and a third horizontal reinforcing frame 79.

  In the present embodiment, the left and right third vertical reinforcing frames 78 are constituted by members having a cross-sectional shape of a groove. The third lateral reinforcing frame 79 is configured by a member having a L-shaped cross section. However, the third vertical reinforcing frame 78 and the third horizontal reinforcing frame 79 are not limited to the groove-shaped member and the L-shaped member, and various members having different shapes such as an angle member and a circular or rectangular pipe material are adopted. Is possible.

  As shown in FIGS. 8 and 9, a bottom inspection port 80 and a lid 81 that can open and close the lower inspection port 80 are provided on the bottom 43 </ b> A of the transport case 43. The lower inspection port 80 is formed in a portion of the bottom 43A located below the driven wheel body 48. The driven wheel body 48 and the like can be inspected from below the transport case 43 through the lower inspection port 80.

  As shown in FIGS. 9 and 16, a lower lateral connecting frame portion 47 c as a front lateral frame extending along the lateral direction of the transport case 43 is provided at a portion of the bottom 43 A in front of the lower inspection port 80. A first lateral reinforcing frame 73 as a rear lateral frame extending along the lateral direction of the transport case 43 is provided in a portion of the bottom portion 43 </ b> A behind the lower inspection port 80. A backing plate 82 is attached across the lower surface portion of the first lateral reinforcing frame 73 and the rear portion of the bottom 43A from the first lateral reinforcing frame 73. Left and right front-rear frames 83 that extend along the front-rear direction of the transport case 43 are provided at the left and right sides of the lower inspection port 80 in the bottom 43A. The left and right front-rear frames 83 extend from the rear portion of the lower horizontal connecting frame portion 47 </ b> C and the front portion of the first horizontal reinforcing frame 73. The part provided with the lower inspection opening 80 of the bottom 43A is reinforced by the downward laterally connecting frame portion 47C, the first lateral reinforcing frame 73, and the left and right front-rear frames 83.

  In the present embodiment, the left and right front-rear frames 83 are configured by members having an L-shaped cross section. The left and right front-rear frames 83 are attached in an attachment posture in which the vertical side rises from the end opposite to the lower inspection port side of the horizontal side. As the front-rear frame 83, various members having different shapes such as an angle, a circular or rectangular pipe member, and a band plate member can be employed in addition to the L-shaped member.

  As shown in FIG. 16, a band plate-shaped front lid receiving member 84 is provided at a portion between the lower inspection port 80 and the lower lateral connection frame portion 47C in the bottom portion 43A. A belt-plate-like rear lid receiving member 85 is provided at a portion between the lower inspection port 80 and the first lateral reinforcing frame 73 in the bottom portion 43A.

  As shown in FIGS. 8, 17, and 18, a reinforcing member 86 extending in the direction along the lateral direction of the transport case 43 is attached to the front surface side of the lid 81. A gap filling member 87 is provided on the back side of the rear end portion of the lid 81. Of the outer periphery of the lid 81, a contact portion 88 is provided on the left lateral end side and the right lateral end side of the lid 81. As shown in FIGS. 18 and 19, a hole 89 is formed in a portion corresponding to the front-rear frame 83 in the bottom 43 </ b> A of the transport case 43.

  As shown in FIGS. 18 and 19, the left and right contact portions 88 are brought into contact with the left and right front-rear frames 83 from below, and the screw members 90 passing through the contact portions 88 and the front-rear frames 83 are tightened. Thus, the lid 81 can be attached to the front-rear frame 83, and the lower inspection port 80 can be closed by the lid 81. When the lower inspection port 80 is closed, the gap between the front end of the lid 81 and the bottom 43A is closed by the front lid receiving member 84, and the gap between the rear end of the lid 81 and the bottom 43A is the rear lid receiving member 85. It is blocked by. As shown in FIGS. 8 and 17, when the lower inspection port 80 is closed, the gap filling member 87 provided in the lid body 81 enters the rear end portion of the lower inspection port 80, and the rear end portion and the bottom portion of the lid body 81. The gap with 43A is closed by the gap filling member 87. Further, the gap filling member 87 that has entered the lower inspection port 80 is located on the front side of the rear peripheral edge portion 43R located on the rear side of the lower inspection port 80 in the lower inspection port peripheral portion of the bottom portion 43A. Thereby, it is prevented by the gap filling member 87 that the cereals being conveyed come into contact with the rear peripheral portion 43R, and the rear peripheral portion 43R can be prevented from being worn out by contact with the cereal. When the gap filling member 87 is worn out by the contact with the cereal, it is sufficient to replace the lid 81.

  As shown in FIGS. 18 and 19, the screw member 90 is fixed in advance to the front-rear frame 83 or the bottom portion 43 </ b> A in a state where the head portion 90 a of the screw member 90 is located inside the transfer case 43 and is received in the hole 89. ing. Since the head 90a is accommodated in the hole 89, the harvested cereal meal is less likely to touch the head 90a. Thereby, the screw member 90 is hard to be worn out.

  As shown in FIG. 8, the rear lower inspection port 92 and the rear lower inspection port 92 can be opened and closed at a portion of the bottom 43 </ b> A between the first lateral reinforcement frame 73 and the second lateral reinforcement frame 75. A lid 93 is provided.

[Another embodiment]
(1) In the above-described embodiment, the example in which the vertical width H of the transfer case 43 is narrower toward the front side in the front side portion 40F of the transfer device 40 has been shown. However, in the front side portion 40F of the transfer device 40, The case 43 may be implemented by adopting a configuration in which the vertical width H of the case 43 is the same as the vertical width of the front end portion 40Rf of the rear end portion 40R over the entire length of the front side portion 40F.

(2) In the above-described embodiment, the driven wheel body 48 is provided at the front end portion of the transport device 40 and the driving wheel body 49 is provided at the rear end portion of the transport device 40. However, the driven wheel body 48 is transported. The driving wheel body 49 may be provided at the front end portion of the conveying device 40 and provided at the rear end portion of the device 40.

(3) In the above-described embodiment, an example in which the endless rotating transport body 44 provided on the left and right sides in the transport case is provided and the left tension ring body 51 and the right tension ring body 61 are provided is shown. Only one carrier 44 and tension ring may be provided.

(4) In the above-described embodiment, the example in which the left urging mechanism 55 and the right urging mechanism 65 are provided with the compression springs 57 and 67 is shown, but a tension spring may be provided instead of the compression spring.

(5) In the above embodiment, an example in which the left side biasing mechanism 55 is provided below the left side support arm 52 and the right side biasing mechanism 65 is provided above the right side support arm 62 has been described. When the transmission unit 31 passes through the left side of the transport device 40, the left urging mechanism 55 is provided above the left support arm 52, and the right urging mechanism 65 is provided below the right support arm 62. May be. Further, both the left side biasing mechanism 55 and the right side biasing mechanism 65 may be provided on the upper side of the support arm or on the lower side of the support arm.

(6) In the above-described embodiment, the example in which the upper and lower inspection ports 76 and 80 are provided is shown. However, only one of the upper and lower inspection ports 76 and 80 is provided. May be. Further, the inspection may be performed without providing both the upper and lower inspection ports 76 and the lower inspection port 80.

(7) In the above-described embodiment, the example in which the vertical reinforcing frames 74 and 78 and the horizontal reinforcing frames 75 and 79 are provided is shown. However, the vertical reinforcing frames 74 and 78 are provided, and the horizontal reinforcing frames 75 and 79 are not provided. You may implement. Moreover, you may implement without providing the vertical reinforcement frames 74 and 78 and the horizontal reinforcement frames 75 and 79 together.

  The present invention can be applied to a combine equipped with a wheel or a wheel and a mini crawler travel device instead of the crawler travel device. Moreover, it can be used for various harvests targeting not only rice and wheat but also various crops such as soybeans and corn.

DESCRIPTION OF SYMBOLS 10 Harvesting part 30 Power transmission mechanism 40 Conveying device 40R Rear end part 43 Conveying case 43A Bottom part 43B Side wall part 43C Top plate part 44 Endless rotation conveying body 44F Conveyance path part 44R Return path part 47c Front sideways frame (downward sideways connecting frame part) )
48 driven wheel body 49 driving wheel body 51 left side tension ring body 52 left side support arm 53 support shaft 55 left side biasing mechanism 57 compression spring 61 right side tension ring body 62 right side support arm 65 right side biasing mechanism 67 compression spring 73 rear sideways frame (First vertical reinforcement frame)
76 Inspection port (upper inspection port)
77 Lid 80 Lower inspection port 81 Lid 83 Front-rear frame 88 Contact part 89 Hole 90 Screw member 90a Head H Vertical width

Claims (12)

A harvesting section provided in front of the traveling aircraft;
A transport device that is connected to the harvesting unit and transports the harvested product harvested by the harvesting unit toward the traveling machine body, and
A driving wheel provided at one of the front end and the rear end of the transport device, and a driven wheel provided at the other of the front end and the rear end of the transport device. An endless rotating transport body wound around the drive wheel body and the driven wheel body, and a transport case for accommodating the driving wheel body, the driven wheel body, and the endless rotating transport body. ,
In the rear end portion, the vertical width of the transport case is wider toward the front side, and in the front side portion of the transport device located on the front side of the rear end portion, the vertical width of the transport case is The harvesting machine which is the same as the vertical width of the front end portion of the rear end portion over the entire length of the front side portion, or is narrower toward the front side. Of the endless rotating transport body, a portion located in the lower portion of the transport case constitutes a transport path portion, and of the endless rotating transport body, a portion positioned in the upper portion of the transport case is returned. Configure the route section,
The transport device is provided with a tension ring body that stretches and operates the endless rotating transport body,
The tension ring body is provided in a loop of the endless rotating transport body in a portion of the transport case where the vertical width of the transport case is the widest, and a rear portion of the return path portion is disposed on the endless rotating transport body The harvesting machine according to claim 1, wherein the harvesting machine is pressed toward the outside of the loop.   In the top plate portion of the transport case at the rear end portion, in a region ranging from the upper portion of the wheel body located on the rear side of the driving wheel body and the driven wheel body to the upper portion of the tension wheel body. The harvesting machine according to claim 2, further comprising a formed inspection port and a lid that opens and closes the inspection port. A vertical reinforcing frame extending along the vertical direction is provided on the side wall of the transport case,
The harvesting machine according to claim 3, wherein the vertical reinforcing frame is attached to a side wall portion of the transfer case at the rear end portion. A support arm that supports the tension ring body is provided inside the transport case so as to be swingable up and down on a side wall portion of the transport case, and
A vertical reinforcing frame extending along the vertical direction is provided on the side wall of the transport case,
The harvester according to claim 2 or 3, wherein the support arm is pivotally supported by the vertical reinforcing frame. A lateral reinforcing frame attached to the bottom of the transport case in a state straddling the transport case on the left and right is provided.
The harvester according to claim 4 or 5, wherein a lower end of the vertical reinforcing frame is connected to an end of the horizontal reinforcing frame. A support arm that supports the tension ring body is provided inside the transport case so as to be swingable up and down on a side wall portion of the transport case,
A spring-type biasing mechanism that biases the support arm toward the tension operation side is provided outside the transport case,
The harvesting machine according to any one of claims 2 to 6, wherein the urging mechanism is provided in a state of being located below the support arm. The endless rotation conveyance body is provided on both the left and right sides inside the conveyance case,
The tension ring body includes a left tension wheel body that stretches and operates the left endless rotation transport body, and a right tension wheel body that stretches and operates the right endless rotation transport body.
The support arm is supported on the left wall portion of the transfer case so as to be swingable up and down, and is supported on the left wall portion of the transfer case so as to be swingable up and down. A right support arm for supporting the right tension ring body,
As the urging mechanism, a left urging mechanism that urges the left support arm toward the tension operation side, and a right urging mechanism that urges the right support arm toward the tension operation side are provided,
One urging mechanism of the left urging mechanism and the right urging mechanism is provided in a state of being positioned below the corresponding support arm of the left support arm and the right support arm,
The other urging mechanism of the left urging mechanism and the right urging mechanism is provided in a state positioned above the corresponding support arm of the left support arm and the right support arm, and the other The harvesting machine according to claim 7, wherein a power transmission mechanism that transmits power to the harvesting unit passes below the urging mechanism. A support shaft extending between the left support arm and the right support arm is provided, and the left support arm and the right support arm are swingable with the support shaft as a swing support point,
The left biasing mechanism spring and the right biasing mechanism spring are both compression springs, or both are tension springs,
The spring in one of the left side biasing mechanism and the right side biasing mechanism is located on the opposite side of the support arm to the side where the tension ring body is located with respect to the support shaft. Connected to
The spring in the other urging mechanism of the left urging mechanism and the right urging mechanism is located on the same side of the support arm as the side where the tension ring body is located with respect to the support shaft. The harvesting machine according to claim 8, which is connected to the harvesting machine. A lower inspection port opened at a bottom portion of the conveyance case, which is located below a wheel body located on the front side of the driving wheel body and the driven wheel body at the bottom portion of the conveyance case; and the lower inspection port A closable lid, and
A front lateral frame extending along the lateral width direction of the transport case is provided at a position on the front side of the bottom inspection port at the bottom of the transport case, and at a rear side of the lower inspection port at the bottom of the transport case. A rear lateral frame extending along the lateral width direction of the transport case is provided at the site,
The left and right front-rear frame extending over the front lateral frame and the rear lateral frame are provided at left and right sides of the lower inspection port at the bottom of the transport case. The harvesting machine described. The outer periphery of the lid body is provided with a contact portion that comes into contact with the front-rear frame from below.
The harvesting machine according to claim 10, wherein the lid is attached to the front-rear frame by a screw member that passes through the contact portion. The screw member is attached in a state where the head of the screw member is located inside the transfer case,
The harvester according to claim 11, wherein a hole for accommodating the head is formed in a bottom portion of the transport case.

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