JPH0579282B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a system in which a conveying tool that holds onions dug up by a front end digging section is arranged side by side at a predetermined pitch on a rotating body that circulates and rotates the onions. The present invention relates to an onion harvesting machine that includes a holding and conveying means, and a leaf cutting device that cuts the leaves and stems of the onion that protrude from both of the onion conveyors in the holding and conveying path.

[Conventional technology]

In this type of onion harvesting machine, the onion is held in place by both conveyance tools during conveyance, and the leaf and stem portions protruding from between the two conveyance devices are cut while the onions are being held in place. On the other hand, in order to maintain the leaf stem part in a predetermined cutting posture, it is necessary to make it protrude in a predetermined posture from both conveyance tools, but in order to obtain this protruding posture, conventionally, before conveyance, it is Lifting and conveying means were provided (for example, patent application 1986-
No. 28692).

[Problem that the invention seeks to solve]

In this case, the action of the lifting and conveying means is to support and transport the bulbs of the onion, thereby causing the leaves and stems in a free state to hang down from the bulbs, thereby allowing the bulbs to take the lead. When the onion that has been dug up is transported by this lifting and transporting means, if the leaf and stem part is in the lead or in a sideways state in the delivery state, it is assumed that the onion is supported and lifted by the lifting and transporting means. In some cases, the leaves and stems were caught between the onion balls and the conveyor and could not hang down freely.

Therefore, even if the leaves and stems were delivered to the holding and conveying means in this state, the leaves and stems did not protrude from between the two conveyors, and the cutting operation could not be performed smoothly.

An object of the present invention is to provide a device that can improve the cutting posture of the leaves and stems by providing a simple mechanism.

[Means for solving problems]

The characteristic configuration of the present invention is that a resistor is provided further forward than the front end digging part to contact the onion planted on the field surface and align the leaf and stem part in a predetermined posture. The effects are as follows.

[Effect]

In other words, by bringing a resistor into contact with onions that are planted on the field and in a fixed position, for example, as shown in Figure 1, as the harvester moves forward, the onions can be The relatively movable resistor drags the leaf and stem part in the free state in the direction of movement, and forcefully sets the desired posture with respect to the fixed ball part.

〔Effect of the invention〕

Therefore, since the onion's posture has already been determined before the conveyance stage, it is sufficient to provide a conveyance device sufficient to maintain the onion's posture during the conveyance stage, instead of trying to change the posture during the conveyance stage as in the past. It is more reliable than before, and leaves and stems can be cut in the desired condition.

〔Example〕

As shown in FIG. 1, the onion harvesting machine A is equipped with an engine 7 and an operating mechanism 31 that can be operated from the field surface on a traveling body 6 supported by a crawler type traveling device 5, and at the front end of the traveling body 6. It is constructed by arranging an excavation section 1 for digging up onions a, and a conveyance and recovery section 2 for conveying the dug onions a.

The digging section 1 includes a rake-like digging blade 3 that digs up and picks up onions a in the field, and a digging blade whose digging depth is set by a gauge wheel 40. 3, a swinging support frame 30 that supports the drive frame 9 at its upper and lower intermediate positions, and a fixed support that extends to the upper end of the drive frame 9 and has an eccentric cam pivotally supported at its tip. It consists of frame 4. The upper end of the drive frame 9 is externally fitted onto the eccentric cam 32, and the drive frame 9 is swung in an elliptical shape about a pivot point X with the swing support frame 30. Therefore, the digging blade 3 is used to cut the dug onion a.
A movement is made to carry the loaded state to the first conveyor 10 side, which will be described later.

Next, the transport and recovery section 2 will be explained. This conveyance and recovery section 2 includes a first conveyor 10 that receives the dug onions a and conveys them rearward, and this first conveyor 1
a second conveyor 13 consisting of a lifting conveyance means 11 that receives onions a from 0 and transfers them upward; a holding conveyance means 12 that holds them in a holding state at the upper part of the lifting conveyance path c; A leaf cutting device 14 that cuts the leaf and stem part b of the onion a held by the onion 12, and a collecting unit 1 that collects the onion a from which the leaves have been removed.
5.

The second conveyor 13 will be explained in more detail. 1st
As shown in the figure, the second conveyor 13 has a chain (endless rotating body) as a rotating body 16 that extends continuously between the lifting conveyance path c in a substantially vertical position and the holding conveyance path d in a horizontal position. A pair of left and right chains 16, 16 are tensioned with appropriate tension applied by a tensioning mechanism 45, and a large number of horizontal conveyance rods 17 are installed across the pair of left and right chains 16, 16. As shown in FIGS. 3 and 4, these transport rods 17 are divided into two sets of three rods each.
The ones 7A, 17B, and 17C are arranged at the apex position of a substantially L shape when viewed from the side and are fixed to the chains 16, 16. The three rods 17A, 17B, and 17C arranged in an L shape constitute a fixed conveyor 18 that receives and conveys the onion a. To explain in detail the connection structure of the fixed conveyor 18 to the chain 16, as shown in FIG. 2, the plate member 41 is fixed to the first link 16A of the chain 16, and the left and right plate members 41, 1st for 41 years
Rod 17A is installed. This first rod 1
7A, two other second and third rods 17B and 17C are arranged at the apex position of the L-shape to form a substantially L-shape in side view, and the second rod 17B is connected to the second rod 17B at both bent ends. A third rod 17C is fixed to the first rod 17A, and a third rod 17C is fixed to the plate member 41 at both bent ends, and the bent ends of the third rod 17C are L-shaped bent portions that protrude toward the side of the movable conveyor 19, which will be described later in side view. It is structured as follows. By arranging the fixed conveyance tools 18 in parallel with the chain 16 at a predetermined pitch, a lifting conveyance means 11 is constructed for receiving the onion a and conveying it upward. On the other hand, the other set consisting of three transport rods 17D, 17E, and 17F has three rods 17D, 17E, and 17F arranged at the apex of a substantially L-shape to be approximately symmetrical with respect to the fixed transport tool 18.
7E and 17F are installed, and chain 1
Both ends of the fourth rod 17D are fitted and held in a bearing holder portion 42 fixed to the second link 16B of the fourth rod 16B. A fifth rod 17D is connected to the fourth rod 17D by a joint material 42A having a substantially L-shaped cross section.
The rod 17E and the sixth rod 17F are connected and fixed in a predetermined position, and a roller-shaped cam follower 43 is attached to both ends of the sixth rod 17F. Side plate 2 supporting the chains 16, 16
A cam rail 8 is provided protruding from the inner side of 0 and 20,
This serves as a guide for the cam follower 43. Therefore, by moving this cam follower 43 while being guided by the cam rails 8 provided along the transport paths c and d, the fifth rod 17E and the sixth rod 17F are moved around the axis of the fourth rod 17D. A movable conveyor 19 is constituted by swinging. This movable conveyor 19 is located between the fixed conveyors 18, 18 that are arranged in parallel at a predetermined pitch on the chain 16, and forms a pair with the fixed conveyor 18 on the rear side in the conveyance direction to hold the onions a. It constitutes a pair of carriers that can be opened and closed.

Incidentally, as shown in FIG. 5, the movable conveyor 19
When the onion a is held in cooperation with the fixed conveyor 18, the sixth rod 17F is moved to the third rod 17C.
The both ends of the onion a are brought into contact with the bent portions 17b, and further enclosing action (swinging) is regulated, so that the onion a is not enclosed more than necessary.

As shown in FIG. 1, this movable carrier 19 is
In the lifting conveyance path c, the cam follower 43 is held by a chain link and is therefore in an open position, and the onion a is supported and conveyed by the fixed conveyance tool 18. When the onion a reaches the upper part of the lifting and conveying path c, the cam follower 43 passes through the guide portion 8a formed by the pair of upper and lower cam rails 8, so that the movable conveying tool 19 changes its posture and transfers to the fixed conveying tool. 18 and the onion a are held in a closed position. In the holding conveyance path d, the cam follower 43 is restricted from swinging toward the open side by the cam rail 8, and the movable conveyance tool 19 maintains the closed posture holding the onion a until the discharge position e to the collecting section 15. . At this release position e, the guidance by the cam rail 8 is released, and at this position, the cam follower 43 is no longer supported, and the protruding pieces 17a at both ends of the fourth rod 17D come into contact with the receiving plate 33 on the side plate 20 side. Therefore, the movable conveyance tool 19 swings toward the open side due to its own weight, and the onion a is released as described later. The fixed conveyor 18 and the movable conveyor 19 are attached to the same chain 16 to constitute the holding and conveying means 12.

Next, the leaf cutting device 14 will be explained. As shown in FIG. 1, the leaf cutting device 14 is equipped with a clipper-shaped cutting blade 26, and is arranged at a portion where the leaf stem portion b of the onion a hangs, and is used to cut the onion a that is being transported.
It is configured to cut the leaf stem part b of the leaf. Onion a
The position where the leaf stem part b hangs down is the holding and conveying tool 1.
Reference numerals 8 and 19 indicate return path corresponding parts that are upside down and moved to the downward return path. This leaf cutting device 1
The onion a whose leaves and stems b have been cut off in step 4 is released from the holding and conveying means 12 at the discharge position e, and is thrown into the basket-type collection section 15 below.

As shown in FIG. 1, a pair of left and right plate-shaped brackets 27, 27 extend further forward from the front ends of the side plates 20, 20, and a brush 28 is mounted on a rotating drum with respect to these brackets 27, 27. A planted resistor 29 is installed.

As shown in FIG. 2, this resistor 29
It consists of a center resistor 29A that spans the entire width of the planting surface and side resistors 29B that are located on the lateral sides of the planting surface, and aligns the leaves and stems b in a predetermined posture. and,
Although not shown, these divided resistors 29 can be adjusted up and down independently, and can be used depending on the shape of the planting surface and the amount of leaves and stems.

[Another Embodiment] The resistor 29 may be of a fixed type or may be configured to freely rotate while a strong brake is applied.

Further, the resistor 29 may have a configuration in which a rubber plate is brought into contact with the onion a.

Further, in the above embodiment, the portion for harvesting onions a may be attached to an agricultural tractor or the like.

The resistor 29 may have a structure in which the downward tip is divided into two forks, and the leaves and stems b are inserted into the two forks to forcibly align them.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the onion harvesting machine according to the present invention, in which FIG. 1 is an overall side view, FIG. 2 is a front view showing a resistor, FIG. 3 is a side view showing a conveyance and recovery section, and FIG.
The figure is a front view showing the holding and conveying means, and FIG.
FIG. 7 is a side view showing a state in which the conveying rod is in contact with the bent portion of the third conveying rod and the holding action is restricted. 1... Excavation part, 12... Holding conveyance means, 1
4... Leaf cutting device, 16... Rotating body, 18, 19
...Carrier, 28...Brush, 29...Resistor.

Claims (1)

[Scope of Claims] 1. Carrying conveyors 18 and 19 that hold the onion a dug up by the front end digging part 1 in a hugging state are arranged in parallel at a predetermined pitch on a rotary body 16 that circularly rotates the conveying tools 18 and 19. An onion harvesting machine comprising a means 12 and a leaf cutting device 14 for cutting the leaf and stem part b of the onion a protruding from both the conveyance tools 18 and 19 in the holding conveyance path d, This onion harvesting machine is provided with a resistor 29 which contacts the onion a planted on the field surface and aligns the leaf and stem part b in a predetermined posture further ahead of the cutting part 1. 2. Claim 1, wherein the resistor 29 is provided with a brush 28 that comes into contact with the onion a.
The onion harvesting machine described in section.