JP2020039294A - Combine - Google Patents

Abstract

To provide a combine capable of being produced at low cost and being made to a simplified structure, capable of avoiding accumulation of waste straw or the like on a lower side position of a deliver position of grain culm, and facilitating a supply work of liquid with respect to a liquid storage tank which is provided by efficiently utilizing a space on the lower side of the delivery position.SOLUTION: A combine comprises: an inlet plate 24 for guiding reaped grain culm transported by a reaping transport part 3 to a grain culm supply hole 23 formed on a front side face of a thresher 4; a liquid storage tank 33 which is provided below the inlet plate 24 and has at its upper part a supply hole 37; and a flow-down guide plate 42 which passes a front side of the supply hole 37 from a front end of the inlet plate 24 and extends to a front lower side position of the supply hole 37. In the combine, a supply opening 40 is formed at a position above the supply hole 37 of the inlet plate 24, and the supply opening 40 is closed by a lid body 41 capable of being freely opened/closed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a combine provided with a cutting and conveying unit that cuts a planted grain culm and conveys the cut grain culm backward, and a threshing device that threshes the cut grain culm.

  In this type of combine, a grain stalk supply port for receiving the harvested grain culm is formed on the front side of the threshing device, and an entrance plate for guiding the harvested grain culm to the grain culm supply port is provided on the front side of the threshing device, In some cases, a liquid storage tank (oil tank) was provided below the plate. In this configuration, the liquid storage tank is provided by effectively utilizing the space below the delivery point from the grain culm transfer device to the entrance plate.

  And, in order to prevent straw chips and the like that have fallen from the delivery point from the reaping conveyance section to the entrance plate from accumulating on the upper part of the liquid storage tank, a metal material for guiding the straw chips and the like to the outside. A guide plate comprising: A notch is formed on the guide plate at the location corresponding to the supply port of the liquid storage tank, and the lid that closes the notch can be switched between a state where it is fixed by tightening bolts and a state where it is released by loosening bolts (For example, see Patent Document 1).

JP 2015-186447 A

  In the above-described conventional configuration, the guide plate is formed with a notch for opening the replenishing port of the liquid storage tank. A mechanism for switching the state of the notch to the closed state is required, which takes time and effort to manufacture, and increases the cost. In addition, when liquid (oil) is supplied to the liquid storage tank, a troublesome operation such as a bolt removing operation and a fastening operation is required.

  Therefore, while having a simple structure and a structure that can be coped with at a low cost, it is possible to avoid the accumulation of straw chips and the like at the lower part of the delivery point of the grain stalk, and further, the lower side of the delivery point It has been demanded that the operation of replenishing the liquid into the liquid storage tank provided by effectively utilizing the space can be easily performed.

  The characteristic configuration of the combine according to the present invention is to cut the planted grain culm, and to transport the harvested grain culm backward, a threshing device for threshing the harvested grain culm, and to be transported by the harvesting and transporting section. An inlet plate for guiding a harvested grain culm to a grain culm supply port formed on the front side of the threshing apparatus, a liquid storage tank located below the inlet plate and having a replenishing port at the top, and A flow guide plate extending from the front end to the front lower side of the supply port through the front of the supply port; and a supply opening formed in a portion of the inlet plate located above the supply port. The replenishing opening is closed by a lid which can be opened and closed.

  According to the present invention, the liquid storage tank is provided by effectively utilizing the space below the inlet plate, that is, the space below the delivery point of the grain culm. And, with the transport of the harvested grain culm, even if straw chips may fall from the delivery point between the end portion of the harvesting transport section and the inlet plate on the threshing device side, it is received by the downflow guide plate. The liquid is guided outward without accumulating on the liquid storage tank. For example, it is possible to avoid the accumulation of straw chips and the like in the lower part of the delivery point of the grain stalk by flowing down the body from the part opened to the lower side.

  When supplying the liquid to the liquid storage tank, the liquid can be supplied from the upper side of the inlet plate with the lid opened and the supply opening formed in the inlet plate opened. In this way, the replenishment operation can be easily performed by a simple operation without any trouble.

  Therefore, it is possible to avoid the accumulation of straw chips and the like in the lower portion of the delivery point of the grain stalk, and furthermore, the liquid in the liquid storage tank provided by effectively utilizing the space below the delivery point. It has become possible to easily perform replenishment work.

  In the present invention, it is preferable that the flow-down guide plate is extended to a front portion of a lower front portion of the liquid storage tank.

  According to this configuration, the straw chips guided down by the downflow guide plate are guided to a front portion of the lower front portion of the liquid storage tank, and then discharged from the front side of the liquid storage tank to the lower outside. Accordingly, it is possible to reliably prevent the straw chips from accumulating on the upper side of the liquid storage tank.

  In the present invention, the harvesting and transporting unit is provided with a delivery guide plate made of a flexible sheet extending toward the grain culm supply port in a state positioned below the harvested grain culm to be transported, and the delivery guide plate is provided. It is preferable that the rear end is placed and supported on the upper surface of the entrance plate, and the supply opening is formed in a portion of the entrance plate located below the delivery guide plate.

  According to this configuration, the harvested grain culm conveyed by the cutting and conveying unit is guided above the delivery guide plate extending from the cutting and conveying unit to the entrance plate. At this time, since the replenishing opening is located below the delivery guide plate, the transported harvested grain culm does not catch on the lid, and there is no possibility that transport will be obstructed. When replenishing the liquid, the flexible delivery guide plate can be turned up to open the replenishing opening (lid), and the replenishing operation can be easily performed.

  In the present invention, it is preferable that a hook-shaped locking portion is provided at a front end portion of the inlet plate, and a rear end portion of the flow-down guide plate is supported in a state locked by the locking portion. .

  According to this configuration, when the flow-down guide plate is mounted, the rear end of the flow-down guide plate can be hooked on the hook-shaped locking portion to be locked and supported.

It is a whole side view of a combine. It is the whole combine top view. It is a side view of a grain stalk delivery point. It is a top view of a grain stalk delivery point. It is a top view of a grain stalk delivery part in the state where a part of grain stalk conveyance device and a delivery guide board were removed. It is a front view of a grain stalk delivery point. It is a perspective view which shows the attachment state of a flow-down guide plate. It is a vertical side view which shows the attachment state of a flow-down guide plate. It is a vertical side view of a supply opening formation part.

  Hereinafter, embodiments of the combine according to the present invention will be described with reference to the drawings.

〔overall structure〕
As shown in FIGS. 1 and 2, the combine includes a traveling body 2 having a pair of right and left crawler traveling devices 1 and a reaping / transporting section 3 connected to a front portion of the traveling body 2 so as to be vertically movable around a horizontal axis X. A threshing device 4 and a grain tank 5 for storing grains are arranged at the rear of the machine in a state of being lined up in the machine body width direction. A riding operation unit 7 covered by a cabin 6 is provided at a right front portion of the traveling body 2, and a driving engine 8 is provided below the riding operation unit 7. A screw conveyor type grain discharging device 9 for discharging the grains stored in the grain tank 5 to the outside is provided at the rear part of the machine body.

  In this embodiment, when defining the longitudinal direction of the aircraft, it is defined along the traveling direction of the aircraft in the working state, and when defining the lateral direction of the aircraft, defining the left and right as viewed from the aircraft traveling direction. . That is, the direction indicated by the reference numeral (F) in FIGS. 1 and 2 is the front side of the aircraft, and the direction indicated by the reference numeral (B) in FIGS. The direction indicated by reference numeral (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference numeral (R) in FIG. 2 is the right side of the aircraft.

  The reaping transport section 3 includes a plurality of raising devices 10 for causing the laid cultivars to fall down, a clipper-type reaping device 11 for cutting the cultivated roots of the raised cereal cultivars, and a vertical posture in which the cultivated roots are cut. And a grain culm transport device 12 for transporting the harvested culm toward the threshing device 4 located on the rear side of the fuselage while gradually changing the posture of the harvested culm to the sideways posture.

  The threshing device 4 is provided with a threshing feed chain 13 for sandwiching and transporting the root of the harvested grain culm backward. Inside the threshing device 4, the tip of the harvested grain culm which is nipped and transported by the threshing feed chain 13 is provided. A handling room 14 for handling the side is provided. The handling chamber 14 is provided with a handling cylinder 15 that rotates around the longitudinal axis to handle and process the tip of the harvested grain culm.

  A sorting unit 17 is provided below the handling chamber 14 to perform a sorting process on the threshing processed and handled. Although not described in detail, the sorting unit 17 sorts the thresh-treated product that has leaked from the receiving net 16 into kernels, second products such as grain with branches, and dust such as straw chips. The grains are stored in the grain tank 5, the second product is returned to the handling room 14, and the straw chips are discharged outward from the rear end.

  As shown in FIGS. 1, 3 and 4, the grain culm transporting device 12 includes a root holding and conveying device 18 for gripping and transporting the root side of the harvested grain culm, and a head for locking and transporting the tip side of the harvested grain culm. A locking conveyance device 19, a tip guide plate 20 for receiving and placing the spike portion of the harvested grain culm and guiding it, an intermediate guide plate 21 for receiving and guiding an intermediate portion of the cut grain culm (see FIG. 4); Etc. are provided. The stock-holding / conveying device 18 holds the stock of the harvested grain culm in the vertical posture and conveys it obliquely rearward and upward. The tip locking and transporting device 19 locks the tip side of the harvested grain culm and transports the harvested grain culm from the vertical position to the horizontal position. The tip guide plate 20 has a bottom guide surface 20a that is wide in the left-right direction, and a vertical guide surface 20b that prevents the tip end of the tip from protruding outward. The intermediate guide plate 21 places and guides an intermediate portion of the harvested grain culm. As shown in FIGS. 1 and 2, above the cereal stalk transport device 12, straw chips and fine dust generated as the culm transport device 12 transports the cut cereal stalks scatter outward. A dustproof cover K is provided to prevent the dust. 3 to 6, the dustproof cover K is omitted.

  At the transfer point of the harvested grain culm from the grain culm transport device 12 to the threshing device 4, a relay transport device 22 that guides the root of the harvested grain culm from the transport end portion of the grain culm transport device 12 toward the threshing feed chain 13. (See FIG. 4).

  As shown in FIG. 6, a grain stalk supply port 23 is formed on the front side surface of the threshing device 4. The root side of the harvested grain culm is transported rearward by the root holding and transporting device 18 and the relay transporting device 22. The tip side of the harvested grain culm is locked and transported rearward by the tip locking and transporting device 19 while being received and supported by the tip guide plate 20. Then, the root side of the harvested grain culm is delivered to the threshing feed chain 13, and the tip portion is fed into the threshing apparatus 4 through the grain culm supply port 23.

[Composition of grain culm delivery points]
At the front side of the grain stalk supply port 23 in the threshing device 4, an inlet plate 24 for guiding the harvested grain culm carried by the grain stalk transport device 12 to the grain stalk supply port 23 is provided. As shown in FIG. 7, the inlet plate 24 is formed in a substantially arc shape substantially along the lower end edge of the cereal culm supply port 23, and a vertical guide surface 24 a is provided at the tip end side of the cereal culm. Have.

  As shown in FIGS. 3 and 4, a delivery guide plate 25 is provided at the rear of the grain culm transport device 12 and extends toward the grain culm supply port 23 in a state located below the harvested grain culm to be transported. . The delivery guide plate 25 extends in the front-rear direction from the rear part of the grain culm transport device 12 to the front and rear part of the entrance plate 24, and extends to the left and right end parts of the grain culm supply port 23 to the entrance plate 24. It extends in a substantially arc shape so as to follow. The front portion of the delivery guide plate 25 is bolted to the bottom guide surface 20a and the vertical guide surface 20b of the tip guide plate 20, and to the intermediate guide plate 21. The rear portion of the delivery guide plate 25 is placed and supported above the entrance plate 24. The delivery guide plate 25 is made of, for example, a flexible sheet made of a soft material such as a rubber plate.

  As shown in FIGS. 3, 4, and 5, at the transfer point of the cereal culm between the cereal culm transfer device 12 and the entrance plate 24, the right side of the cereal stalk moving area has the tip side of the harvested cereal culm conveyed. A spike guide member 26 is provided in a vertically-oriented posture for receiving and guiding toward the grain stalk supply port 23. The front-side guide portion 26a of the tip guide member 26 is provided in a state where the front end portion is located on the right side of the vehicle body, and extends in an inclined posture that is located on the right side of the vehicle body toward the rear side. The rear-side guide portion 26b of the tip guide member 26 is provided so as to be continuous with the rear end portion of the front-side guide portion 26a, and is provided so as to extend straight toward the rear of the aircraft in the front-rear direction in plan view. .

  For example, when the crop to be harvested is wheat, the wheat is hard on the tip side and easily breaks during transport. As a result, if there is a space in front of the grain stalk supply port 23, broken stem stalks may be accumulated. However, by making the tip guide member 26 into the shape as described above, the stem culm broken by the tip guide member 26 is brought to the grain culm passing area with the transport of the harvested grain culm, so that it does not stay It can be transported together with the cereal stem toward the threshing device 4.

  The harvesting and transporting section 3 is entirely supported by a front-rearward cylindrical frame 27 extending in the front-rear direction. It is freely supported by the traveling body 2. Also, the reaper transport unit 3 is supported by the traveling body 2 so as to be swingable about the longitudinal axis Y, and moves toward the front side and laterally outward of the body to a maintenance position (not shown) where the front part of the body is opened. The posture can be switched.

  As shown in FIGS. 3, 5, and 6, the rear end portion of the front-rearward cylindrical frame 27 is integrally connected and fixed to a horizontal cylindrical frame 28 in a horizontal posture. Are rotatably received and supported around a horizontal axis X by a pair of left and right receiving holding portions 29 and 30 provided on the left and right sides.

  As shown in FIGS. 1 and 3, a hydraulic cylinder 32 is pivotally connected to a middle part of the front-rearward cylindrical frame 27 and a front end of the body frame 31. The transport unit 3 is configured to be able to move up and down around the horizontal axis X.

  As shown in FIGS. 3 and 6, an oil tank 33 (an example of a liquid storage tank) for storing hydraulic oil is located below the inlet plate 24 and below the horizontal tubular frame 28. Has been deployed. The oil tank 33 is formed of a highly rigid structure as a whole. The left and right side surfaces of the oil tank 33 are formed in a planar shape, and the upper surface 33a of the oil tank 33 is formed in a mountain shape in a side view. Therefore, the front side of the upper surface 33a relative to the top 33a1 is provided in a forward-downward inclined posture. The oil tank 33 is attached and fixed to the body frame 31 by bolting a plurality of locations.

  As shown in FIG. 3, the left side surface 33b of the oil tank 33 is formed to extend so as to protrude rearward and upward from the upper surface 33a and the rear surface 33c. A rotary support for rotatably supporting the reaping and transporting unit 3 around the longitudinal axis Y in a state of being integrally connected to the outer side and the front side of the fuselage on the left side surface 33b. A part 34 is provided. The rotation support portion 34 is formed in a substantially box shape using the left side surface 33 b of the oil tank 33.

  A cylindrical support shaft 35 for rotatably supporting the reaper transport unit 3 around the vertical axis Y is provided inside the rotation support unit 34 in a state of being rotatably supported around the vertical axis Y. It is stored. A left-side receiving / holding portion 29 for supporting the horizontal tubular frame 28 is attached to an upper portion of the support shaft 35. The left-side receiving / holding portion 29 sandwiches and holds the horizontal tubular frame 28 so as to be able to rotate integrally with the support shaft 35 around the horizontal axis X.

  Although not shown, a mowing transmission mechanism for transmitting the power from the engine 8 to the mowing and transporting section 3 is provided on the rear side of the rotary support section 34 outside the left side face 33b of the oil tank 33, for example, And a continuously variable transmission for mowing the speed of the mowing drive.

  As shown in FIG. 6, a right-side receiving / holding portion 30 for rotatably receiving and holding the horizontal tubular frame 28 is mounted and supported on an upper portion of an oil tank 33 via a bracket 36. The right receiving / holding portion 30 sandwiches and holds the horizontal tubular frame 28 in such a manner as to be rotatable around the horizontal axis X, similarly to the left receiving / holding portion 29.

  In such a supporting structure, the right receiving and holding portion 30 of the pair of right and left receiving and holding portions 29 and 30 is switched to the open state, and the entire reaping and transporting portion 3 is moved around the vertical axis Y of the support shaft 35. Can be rocked.

  An oil supply port 37 (an example of a supply port) is formed at a position on the upper surface 33a of the oil tank 33 behind the top portion 33a1 and closer to the left side of the machine body. As shown in FIG. 3, a cylindrical portion 38 communicating with the inside of the tank is provided so as to protrude greatly upward from the upper surface 33 a, and an oil supply port 37 is formed at an upper end of the cylindrical portion 38. The refueling port 37 is closed by a cap 39 that is detachably mounted except during refueling work.

  As shown in FIGS. 7 and 9, a circular supply opening 40 is formed in a portion of the inlet plate 24 located above the oil supply port 37. The supply opening 40 is closed by a lid 41 that can be opened and closed. The lid 41 is made of a synthetic resin material, and is configured to be able to be held in a closed state in which the supply opening 40 is closed by being pushed and mounted so as to fit into the supply opening 40.

  As shown in FIGS. 3 and 4, the supply opening 40 is formed in a portion of the inlet plate 24 located below the delivery guide plate 25. Therefore, during a normal harvesting operation, the supply opening 40 closed by the lid 41 is covered by the delivery guide plate 25 from above. Therefore, the harvested grain culm to be conveyed is guided by movement along the upper surface of the delivery guide plate 25, and is not caught and stayed at the lid 41 or the peripheral portion of the replenishing opening 40, thereby inhibiting the grain culm conveyance. There is no fear. When refueling, refueling can be performed by removing the lid 41 in a state where the delivery guide plate 25 is turned up and the upper part is opened.

(Downflow guide plate)
A flow-down guide plate 42 extending from the front end of the inlet plate 24 to the front lower side of the fuel port 37 through the front of the fuel port 37 is provided. Specifically, as shown in FIGS. 3, 5, 6, and 7, the front side of the flow-down guide plate 42 is extended to a front lower part of the front lower portion of the oil tank 33. The flow-down guide plate 42 is formed of a flexible sheet such as a rubber plate or a soft synthetic resin plate. The flow-down guide plate 42 has a configuration in which a rear end portion is locked and held, and a front end portion hangs down in a free state.

  As shown in FIGS. 7 and 8, a plurality of hook-shaped locking portions 43 are provided on the lower surface side of the front end of the entrance plate 24. The locking portion 43 is formed by fixing one end of a band-shaped sheet metal to the lower surface of the front end of the entrance plate 24 and bending the other end of the sheet metal into a hook shape.

  The rear end of the flow-down guide plate 42 is supported by a hook-shaped locking portion 43. That is, the insertion hole 44 is formed at a position corresponding to the locking portion 43 at the rear end of the flow-down guide plate 42. The insertion hole 44 is provided with a reinforcing eyelet 45. The rear end of the flow-down guide plate 42 is supported with the hook-shaped portion 43a of the locking portion 43 inserted into the insertion hole 44 and inserted.

  As the flow-down guide plate 42, a right flow-down guide plate 42A corresponding to the upper side of the oil tank 33 and a left flow-down guide plate 42B corresponding to the upper side of the left receiving and holding portion 29 and the like are provided. The rear end portions of the left and right flow-down guide plates 42A and 42B are locked and held by a pair of left and right locking portions 43, respectively.

  As shown in FIGS. 3 and 7, the front portion of the right-side flow guide plate 42 </ b> A is supported so as to hang down to the front lower side while being placed along the upper surface 33 a of the oil tank 33. The front end of the right flow-down guide plate 42 </ b> A extends to the front lower part of the oil tank 33. On the other hand, the front side of the left flow-down guide plate 42B is supported in a posture of hanging down on the front lower side while being placed along the upper surface of the left receiving and holding portion 29. The front end of the left flow-down guide plate 42B is extended to a position on the front side of the lower end of the rotation support portion 34.

  As shown in FIG. 3, the front part of the lower front part of the oil tank 33 and the front part of the lower end part of the rotation support part 34 are located forward of the front end of the body frame 31, and Is an open space, and the scraps and the like guided by the downflow guide plates 42 (42A, 42B) fall onto the upper portion of the crawler traveling device 1 below or onto the ground.

[Another embodiment]
(1) In the above-described embodiment, the right downflow guide plate 42A extends to the front lower part of the front lower part of the oil tank 33, but instead extends to the front lower part of the refueling port 37. Alternatively, the oil tank 33 may be configured to extend from the top 23c1 of the upper surface 33a of the upper surface 33a of the oil tank 33 to an intermediate position at a position on the front side from the top 23c1. That is, after being guided by the flow-down guide plate 42, the straw waste is guided to flow down by using the front-side portion of the oil tank 33 in the forward-downward inclined posture.

(2) In the above-described embodiment, the right flow guide plate 42A and the left flow guide plate 42B are provided as the flow guide plates 42. However, instead of this configuration, for example, the left flow guide plate 42B is used. A configuration may be provided in which only the right-side downflow guide plate 42A is provided, and the left-side downflow guide plate 42B is not provided, as a configuration in which a portion corresponding to the lower side of the lower side is greatly opened.

(3) In the above embodiment, the hook-shaped locking portion 43 is provided at the front end of the inlet plate 24, and the rear end of the flow-down guide plate 42 is supported in a state of being locked by the locking portion 43. Instead of this configuration, for example, a configuration in which welding bolts are provided on the lower surface side of the inlet plate 24 and tightened and fixed with nuts through insertion holes formed in the flow-down guide plate 42, or the lower surface of the inlet plate 24 Various configurations such as a configuration in which a pinch holding mechanism (a clip or the like) is provided on the side to pinch and support the flow-down guide plate 42 can be adopted.

(4) In the above embodiment, the oil storage tank 33 for storing the hydraulic oil is provided as the liquid storage tank. However, a fuel tank for storing the fuel of the engine 8 may be used instead. It may be a urea water tank or the like that stores urea water used in the processing device.

(5) In the above embodiment, the flow guide plate 42 is shown to be formed of a flexible sheet made of a soft material such as a rubber plate. However, instead of this structure, a hard synthetic resin material or metal is used. A rigid plate body, which is fixed to the front end of the inlet plate 24 by a bolt connection structure, welding, or the like, and is provided so as to extend downward and forward so as to guide straw chips and the like down. Good.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a combine provided with a cutting and conveying unit that cuts a planted grain culm and conveys the cut grain culm backward, and a threshing device that threshes the cut grain culm.

3 Harvesting / transporting section 4 Threshing device 23 Grain stalk supply port 24 Inlet plate 25 Delivery guide plate 33 Oil tank (liquid storage tank)
37 Refueling port (supply port)
40 Replenishment opening 42 Downflow guide plate 43 Locking part

Claims (4)

A mowing transport section that harvests the planted grain culm and transports the harvested grain culm backward,
A threshing device for threshing the harvested culm,
An inlet plate that guides the harvested grain culm transported by the harvesting transport unit to a grain culm supply port formed on the front side of the threshing device,
A liquid storage tank located below the inlet plate and having a supply port at the top,
A flow guide plate extending from the front end of the inlet plate to the front lower side of the supply port through the front of the supply port;
A supply opening is formed in a portion of the inlet plate located above the supply port,
A combine wherein the supply opening is closed by a lid that can be opened and closed.   The combine according to claim 1, wherein the downflow guide plate extends to a front portion of a lower front part of the liquid storage tank. The harvesting and transporting unit is provided with a delivery guide plate made of a flexible sheet extending toward the grain culm supply port in a state located below the harvested grain culm to be transported,
A rear end of the delivery guide plate is placed and supported on an upper surface of the entrance plate,
The combine according to claim 1, wherein the supply opening is formed in a portion of the inlet plate located below the delivery guide plate. A hook-shaped locking portion is provided at a front end of the entrance plate,
The combine according to any one of claims 1 to 3, wherein a rear end of the flow-down guide plate is supported in a state of being locked by the locking portion.

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