JP6579540B2 - Vegetable harvesting machine - Google Patents

Description

  The present invention relates to a technique of a vegetable harvesting machine provided with a discharge conveyor that harvests vegetables while running the machine body and discharges the harvested products to a traveling transport vehicle.

  Conventionally, vegetables such as carrots, onions, potatoes, and sweet potatoes grown in the field are harvested, transported up and down by a transport conveyor, sorted during the transport, and a discharge conveyor is provided at the rear of the transport conveyor, A technique is known in which a harvested product is accommodated in an accompanying container that is accompanied by a discharge conveyor. For example, it is a technique shown in Patent Document 1.

  In the technique shown in Patent Document 1, a hopper is provided below the rear end of the transport conveyor, the starting end side of the discharge conveyor is disposed below the hopper, and the turntable is disposed below the hopper. In this way, the discharge conveyor can be rotated left and right on the turntable so that the harvested product can be discharged into a container placed on a traveling transport vehicle located on the side or rear of the harvester.

  With the configuration as described above, when the discharge conveyor is not at work, the discharge conveyor protrudes to the side or the rear of the harvester body, obstructing it during travel and storage. There was a risk of contact or loss of balance.

JP-A-6-319333

  Therefore, when not in operation, an attempt is made to provide a discharge conveyor that can be stored so that the discharge conveyor does not protrude significantly from the body of the harvesting machine, and the weight balance is not greatly lost.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in Claim 1, it is a vegetable harvesting machine provided with the discharge conveyor arrange | positioned in the rear part of the vegetable conveyance part which conveys the harvested vegetable diagonally upwards and backwards in the upper part of a driving | running | working part, Comprising: A support frame is extended, and front and rear intermediate portions of the left and right transport frames of the discharge conveyor are supported by the support frame so as to be rotatable forward and backward by a rotation shaft having a horizontal axis, and the discharge conveyor is It rotates between a working position in which the upper part is rotated backward and a storage position in which the upper part is rotated forward, and the discharge conveyor is placed between the working position and the supporting frame. An elastic member for biasing the vertical posture between the storage position is interposed .

According to a second aspect of the present invention, a shooter capable of changing the discharge direction vertically and horizontally is attached to the discharge side end of the discharge conveyor.

As effects of the present invention, the following effects can be obtained.
That is, the discharge conveyor can be set to the storage position by rotating forward with a simple configuration without changing its structure. When the discharge conveyor is in the storage position, the front-rear length can be shortened, and it can be easily moved, transported, and stored. Further, when the discharge conveyor is rotated forward to the storage position, the center of gravity of the discharge conveyor moves forward, improving the front-rear weight balance and improving stability.

The side view which shows a vegetable harvester and a transport vehicle. Top view of vegetable harvester. The perspective view of a body frame and a support frame. The perspective view seen from the upper right of a discharge conveyor and a support frame. The perspective view seen from the upper left of a discharge conveyor and a support frame. The rear view of a power connection / disconnection apparatus. Side view of a shooter. The perspective view seen from the lower part of the shuta. The side view which shows the state which the vegetable harvester fell backward.

Below, with reference to FIG. 1, FIG. 2, it demonstrates from the whole structure of the vegetable harvester 1 provided with the conveyor 40 for discharge | emission. In the following description, it is assumed that the direction of the arrow F is the traveling direction of the vegetable harvester 1, that is, the front direction, and that the front, rear, left and right directions are defined.
Hereinafter, the vegetables harvested by the vegetable harvesting machine 1 of the present embodiment will be described as onions, but the present invention is not particularly limited thereto, and examples thereof include vegetables such as potatoes, carrots, and sweet potatoes. May be. Further, the discharge conveyor 40 can be applied to a harvesting machine that digs up, pulls out, or cuts the vegetables dug up on the straw or the vegetables vegetated on the straw and conveys them backward.

The vegetable harvesting machine 1 is a harvesting machine that collects the onion that has been pulled out on the basket and stores it in a container 60 that is placed on a transporter 50 that is accompanied by the discharge conveyor 40.
The vegetable harvesting machine 1 is mainly composed of a machine body frame 2, a driving unit 13 having an engine as a driving source, a traveling unit 14 formed of a crawler type traveling, a steering unit 15, a vegetable scraping unit 16, a vegetable conveying unit 17, and a discharging conveyor 40. It comprises.
The vegetable raking unit 16 is disposed at the foremost portion of the vegetable harvesting machine 1 and is disposed below the vegetable raking unit 16 by arranging a plate-like elastic body in a direction perpendicular to the traveling direction and rotating backward. The onion on the bowl is fed into the front part of the vegetable transport unit 17.

  The vegetable conveyance part 17 is formed in the front low and rear high, and the front end (starting end) of the discharge conveyor 40 is arrange | positioned under the rearmost part. In the vegetable transport section 17, an interdigital endless transport body is disposed between the left and right transport frames 18. In other words, the drive shaft 19 is horizontally mounted on the rear part of the left and right transport frames 18 and 18, the front driven shaft is horizontally mounted, the drive sprocket is fixed to the left and right sides of the drive shaft 19, and the left and right sides of the driven shaft are fixed. A driven sprocket is fixed, a chain is wound between the drive sprocket and the driven sprocket, and a plurality of conveying rods are installed between the left and right chains to form a comb-like endless conveying body.

  In this way, the onion pulled out from the basket and placed on the basket is scraped by the vegetable scraping unit 16 and delivered to the vegetable transport unit 17, and is held and transported backward by the vegetable transport unit 17. The onion transported to the end of the vegetable transport unit 17 falls to the front part of the discharge conveyor 40 through the guide plate, is transported upward and backward by the discharge conveyor 40, and is placed on the transport vehicle 50. Housed inside.

Next, the discharge conveyor 40 will be described.
In FIGS. 1 to 4, a support frame 30 protrudes rearward from the rear part of the machine body frame 2, and a discharge conveyor 40 is attached to the support frame 30. The body frame 2 has main frames 20, 20 arranged in the front-rear direction on the left and right sides, and props 21, 21 are erected on the rear part of the main frames 20, 20. 19 is rotatably supported, and an upper horizontal frame 22 and a lower horizontal frame 23 are horizontally installed in parallel between the left and right support columns 21. The front end of the support frame 30 is fixed to the upper horizontal frame 22 and the lower horizontal frame 23.

  The support frame 30 includes left and right upper frames 31 and 31 and lower frames 32 and 32 disposed in the front-rear direction, and guards fixed to the rear ends of the left and right upper frames 31 and 31 and the lower frames 32 and 32. The frame 33, the upper frames 31, 31 and the lower frames 32, 32 are connected to each other to form a reinforcing frame 34, 34, 35, 35, etc., which increases the rigidity, and is composed of a steel pipe or the like.

The front ends of the upper frames 31 and 31 are fixed to the upper horizontal frame 22 via a stay or the like, the rear portions of the upper frames 31 and 31 extend rearward in a substantially horizontal direction, and the rear end of the guard frame 33 is The upper part is fixed. A rotating shaft 36 is rotatably supported on the front and rear middle portions of the upper frames 31 and 31. The reinforcing frame 34 is interposed between the front and rear halfway parts of the upper frame 31 and the connecting part that connects the front part of the lower frame 32 and the lower horizontal frame 23.
The front ends of the lower frames 32 and 32 are fixed to the lower horizontal frame 23 via a stay or the like, and the rear portions of the lower frames 32 and 32 extend obliquely upward and rearward. The part is fixed.

  The guard frame 33 is formed in a substantially square frame shape in rear view. However, the shape is not limited. The guard frame 33 is fixed in the vertical direction at the rear ends of the upper frames 31 and 31 and the lower frames 32 and 32 and is disposed in the horizontal direction. The right end of the guard frame 33 is substantially aligned with the right end of the vegetable harvester 1, and the left end of the guard frame 33 protrudes to the left of the left end of the discharge conveyor 40 so as to match the left end of the vegetable harvester 1. Is done.

  In this way, the control space S is formed with the left side opened by the control unit 15, the upper frame 31 of the support frame 30, and the guard frame 33. The operator is positioned in the control space S and operates the control unit 15. For example, even if the transport vehicle 50 catches up from behind, the operator does not collide with the guard frame 33 to cause harm to the operator. Even if the machine suddenly hits the machine, the worker can escape to the side.

  As shown in FIG. 1, the lower end of the guard frame 33 is provided at the rear end of the machine body frame 2 (or the rear lower end of the traveling unit 14) and the rear end of the discharge conveyor 40, specifically, the rear end of the discharge conveyor 40. The amount of protrusion extends below a straight line L connecting the lower ends of the shooters 90 and can be easily returned to the original state when the lower ends of the guard frames 33 are grounded. That is, as shown in FIG. 9, when the vegetable harvester 1 falls backward and the guard frame 33 is grounded, the center of gravity G of the vegetable harvester 1 is a vertical line V from the grounding point of the traveling unit 14. The lower end position of the guard frame 33 is set so as to be in the vicinity of. With this configuration, even if the rear side of the machine body is tilted down on a slope or the like, the lower end of the guard frame 33 does not contact the ground, and the machine body, the discharge conveyor 40 or the like does not contact the ground. Even if the aircraft is tilted without being damaged, it can be easily returned to its original state by simply pushing it forward with a small force.

  As described above, the discharge conveyor 40 is arranged at the rear of the vegetable transport unit 17 that transports the harvested vegetables diagonally upward and rearward at the upper part of the traveling unit 14, and the harvested product is transported to the transport vehicle 50 that follows the rear. In the vegetable harvesting machine 1 that can transport the frame, a support frame 30 is extended behind the machine frame 2, the discharge conveyor 40 is supported on the support frame 30, and a guard for overturning protection is provided at the rear of the support frame 30. Since the frame 33 is provided, the guard frame 33 can be attached by using the support frame 30 to which the discharge conveyor 40 is attached, and a simple configuration can be obtained. Even if the vegetable harvester 1 falls backward, it is discharged. The conveyor 40 can be prevented from being damaged.

  Further, since the lower end of the guard frame 33 extends below a straight line connecting the rear end of the machine body frame 2 and the rear end of the discharge conveyor 40, the guard frame 33 can be used even if the vegetable harvester 1 is tilted rearward. The lower end of the first contact with the ground does not incline further, and the discharge conveyor 40 and the machine body are not damaged.

  Further, since the left and right ends of the guard frame 33 extend to the rear of the control unit 15, when the operator is positioned behind the control unit 15 and performing the control, the transport vehicle that accompanies the rear thereof. Even if 50 approaches, it can contact the guard frame 33 and protect the operator. Moreover, since the side is open | released, even if it becomes a situation where it presses against the control part 15 or the guard frame 33, it can escape to a side.

  The discharge conveyor 40 is attached to the support frame 30 so as to be able to rotate back and forth. That is, the lower portion of the discharge conveyor 40 is inserted into a space surrounded by the upper and lower frames 31 and 32 of the support frame 30 and the guard frame 33 at the rear, and the discharge conveyor 40 is conveyed on both the left and right sides of the discharge conveyor 40. The rotary shafts 36 and 36 projecting laterally from the frames 42 and 42 are supported so as to be able to rotate back and forth.

  The rotation shaft 36 is disposed below the center in the longitudinal direction (center of gravity position) of the discharge conveyor 40. In this embodiment, it is arranged at a position about 1/3 from the lower end, and can be held by stoppers 70 and 71 described later at a working position where the upper part is rotated backward and a storage position where the upper part is rotated forward. I have to.

  An elastic member is interposed between the discharge conveyor 40 and the support frame 30 so that the operation force for switching between the work position and the storage position can be reduced, and the discharge conveyor 40 is moved up and down by the elastic member. It is biased to rotate so as to have a directional posture. That is, as shown in FIG. 5, on the side surface of the transport frame 42, the locking pin 43 protrudes laterally from a position below the rotation shaft 36, and the front and rear halfway of the lower frame 32 of the support frame 30. In this portion, a locking pin 37 protrudes from a position below the rotation shaft 36, and a tension spring 38 is interposed as an elastic member between the locking pin 37 and the locking pin 43. The discharging conveyor 40 is set in the vertical direction by the urging force. Thus, when the discharge conveyor 40 is switched between the work position and the storage position, by releasing stoppers 70 and 71, which will be described later, the discharge conveyor 40 is rotated so as to be in the vertical position, and the switching operation force is increased. Can be reduced. However, the spring force of the spring 38 is slightly weakened and is normally held at the work position or the storage position by gravity, and rotates with a small force so as to assist when the stoppers 70 and 71 are released and the position is switched. You may be able to do it. Moreover, in this embodiment, although the elastic member is arrange | positioned on the left side, you may arrange | position on the right side or both sides. Moreover, the structure which arrange | positions a torsion spring on the rotating shaft 36 may be sufficient.

  Further, stoppers 70 and 71 are provided so that the discharge conveyor 40 can be fixed at the work position and the storage position. The stopper 70 fixed at the working position is configured between the lower side surface of the transport frame 42 and the front lower portion of the support frame 30. In this embodiment, as shown in FIG. A pin 72 is slidably provided, and a locking hole for inserting the stopper pin 72 is provided on the lower side surface of the transport frame 42. Thus, the discharge conveyor 40 is moved to the support frame 30 by inserting the stopper pin 72 into the locking hole at the work position where the upper part of the discharge conveyor 40 is rotated rearward and the front lower part is in contact with the reinforcing frame 35. It can be fixed.

  Further, as shown in FIGS. 1 and 3, the stopper 71 fixed at the storage position is configured between a support frame 73 provided on the rear upper part of the transport frame 18 of the vegetable transport unit 17 and an upper part of the transport frame 42. In this embodiment, the lock arm 74 is disposed on the support frame 73 so as to be slidable. In this way, the upper portion of the discharge conveyor 40 is rotated forward and the lock arm 74 is engaged with the edge formed on the side portion of the transport frame 42 at the storage position where the upper portion of the discharge conveyor 40 contacts the support frame 73. The conveyor 40 can be fixed to the transport frame 18. However, the stoppers 70 and 71 are not limited to the above configuration, and may be configured to be fixed with bolts or fixed with a lever or a cam.

  The discharge conveyor 40 has a drive shaft 44 supported on the lower portions of the left and right transport frames 42 and 42, an upper driven shaft 45 supported on both sides of the drive shaft 44, and a drive sprocket fixed to both sides of the driven shaft 45. The driven sprockets are fixed on both sides, the chain is wound between the drive sprocket and the driven sprocket, and the conveyance rods 46, 46... And the comb-shaped conveyance bodies 47, 47. It is placed horizontally with a predetermined interval. Thus, when the drive shaft 44 is rotated, the chain is rotated, and the onion is placed on the transport rod 46 between the transport body 47 and the transport body 47 so as to be transported rearward and upward. .

  A power connection / disconnection device 80 is arranged on the side of the drive shaft 44. As shown in FIG. 6, the power connection / disconnection device 80 includes a connection / disconnection lever 81, a sliding cam 82, a transmission shaft 83, and a support plate 84. The support plate 84 is fixed to the right support column 21, and the transmission shaft 83 is supported by the support plate 84. An input sprocket 85 is fixed to one end of the transmission shaft 83 so that power can be transmitted from an output sprocket 86 fixed to one side (right side) of the drive shaft 19 via a chain. A sliding cam 82 is slidably fitted on the other side of the transmission shaft 83, one end of the connecting / disconnecting lever 81 is engaged with one end of the sliding cam 82, and an engagement recess is formed with the other end. 82a is formed. A fixed pin 44a is fixed to one end of the drive shaft 44 so as to be orthogonal to the shaft center, and can be fitted into the engagement recess 82a. The connection / disconnection lever 81 is supported by the support plate 84 so that it can be rotated left and right, the lower part engages with the sliding cam 82, a grip is formed at the upper part, and the connection / disconnection lever 81 is fixed to the support plate 84. Inserted in the lever guide hole of the cover.

  Thus, by rotating the connecting / disconnecting lever 81 to the “disconnected” position on the left, the sliding cam 82 is slid to the right, the engaging recess 82a is disengaged from the drive shaft 44, and power transmission is cut off. It is. In this state, the discharge conveyor 40 can be rotated forward to the storage position. When the connection lever 81 is rotated to the right “contact” position at the work position where the upper portion of the discharge conveyor 40 is rotated rearward, the sliding cam 82 is slid to the left, and the engagement recess 82 a The connecting / disconnecting lever 81 is configured to be able to be held at the “disconnect” and “contact” positions by the lever guide hole opened in the cover so that the power from the engine can be transmitted to the discharge conveyor 40 by fitting with the pin 44a. Yes.

A shooter 90 is provided at the upper rear end of the discharge conveyor 40 so as to be vertically rotatable and horizontally rotatable. As shown in FIGS. 7 and 8, the shooter 90 is attached to the lower rear portion of the transport frames 42 and 42 via an attachment frame 91 and a turntable 92. The mounting frame 91 is configured in a substantially triangular shape in plan view, and the front end is fixed to the upper and rear surfaces of the left and right transport frames 42. A support boss 91a is provided at the rear end of the mounting frame 91 with the axis centered in the vertical direction, and a support shaft 92a projecting downward from the approximate center of the lower surface of the turntable 92 is inserted into the support boss 91a so as to be turnable left and right. The A knob screw 94 is screwed onto the support boss 91a, and the support shaft 92a is fixed by tightening the knob screw 94 so that the turntable 92 can be fixed at an arbitrary angle.
The pivot base 92 and the shooter 90 are substantially U-shaped when viewed from the rear, and support shafts 95 and 95 project laterally from the left and right side walls at the rear of the pivot base 92, and the left and right side walls at the front of the shooter 90 are It is pivotally supported by support shafts 95 and 95. Arc-shaped guide long holes 90a centering on the support shaft 95 are opened on both side walls of the shooter 90. A knob screw 96 is inserted into the guide long hole 90a and screwed to the turntable 92. The knob screw 96 The shooter 90 can be fixed at an arbitrary angle in the vertical direction.

  In this way, the shooter 90 is rotated up, down, left and right at the rear end portion of the discharge conveyor 40, can be fixed at an arbitrary angle, and is placed on the transport vehicle 50 positioned below the discharge conveyor 40. The shooter 90 can be rotated and fixed in accordance with the position and height of the container 60, and the harvested onion can be reliably accommodated in the container 60.

  As mentioned above, it is the discharge conveyor 40 of the vegetable harvester 1 arrange | positioned in the rear part of the vegetable conveyance part 17 which conveys the harvested vegetable diagonally upwards and backwards in the upper part of the traveling part 14, Comprising: Behind the body frame 2 The support frame 30 is extended, and the front and rear halfway portions of the left and right transport frames 42 of the discharge conveyor 40 are supported by the support frame 30 so as to be rotatable forward and backward by a rotation shaft 36 having a horizontal axis. Therefore, without changing the structure of the discharge conveyor 40, the storage position can be set by rotating forward with a simple configuration. When the discharge conveyor 40 is in the storage position, the front-rear length can be shortened, and it can be easily moved, transported, and stored. When the discharge conveyor 40 is rotated forward to the storage position, the center of gravity of the discharge conveyor 40 moves forward, improving the front-rear weight balance and improving stability.

  Further, a spring 38 as an elastic member for biasing the discharge conveyor 40 in the vertical position is interposed between the transport frame 42 and the support frame 30, so that the discharge conveyor 40 is placed at the work position. The operating force for switching to the storage position can be reduced.

  In addition, a shooter 90 capable of changing the discharge direction vertically and horizontally is attached to the discharge side end of the discharge conveyor 40, so that it matches the travel position of the accompanying transport vehicle 50 and the height of the container 60 placed on the transport vehicle 50. Thus, the position of the shooter 90 can be changed, and the harvested product can be reliably accommodated in the container 60.

DESCRIPTION OF SYMBOLS 1 Vegetable harvesting machine 2 Airframe frame 14 Traveling part 17 Vegetable conveyance part 30 Support frame 35 Rotating shaft 40 Discharge conveyor 42 Conveyance frame

Claims (2)

It is a vegetable harvester equipped with a discharge conveyor disposed at the rear of the vegetable transport unit that transports the harvested vegetables diagonally upward and rearward at the top of the traveling unit, and a support frame is extended behind the body frame, Work in which front and rear intermediate portions of the left and right transport frames of the discharge conveyor are supported by the support frame so as to be able to rotate back and forth by a rotation shaft having a horizontal axis, and the upper portion of the discharge conveyor is rotated rearward. The position of the discharge conveyor is rotated between the position and the storage position where the upper portion is rotated forward, and the discharge conveyor is disposed between the transport frame and the support frame in the vertical direction between the work position and the storage position. A vegetable harvester characterized in that an elastic member for biasing the posture is interposed . The vegetable harvesting machine according to claim 1, wherein a shooter capable of changing a discharge direction vertically and horizontally is attached to a discharge side end of the discharge conveyor .

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