JPH0620378B2 - Onion harvesting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a lifting conveyance means for receiving an onion dug up at a front end dug portion and moving it upward, and an upper portion of the lifting conveyance path. The present invention relates to an onion harvesting machine, which is provided with a holding and conveying means for supplying a leaf cutting device for cutting a lifted onion leaf stem.

[Conventional technology]

Conventionally, as a holding and conveying means, a fixed conveying tool that supports an onion and a movable conveying tool that can be opened and closed relative to the fixed conveying tool are provided, and the onion is held and held by the movable conveying tool in the closed state and the fixed conveying tool. It has adopted a form of moving along a conveyance path (for example, Japanese Patent Application No. 62-28692 (Japanese Patent Application Laid-Open No. 63-1962).
No. 006) See the holding and conveying route in FIG. 1).

[Problems to be Solved by the Invention]

In such a holding and conveying means composed of a fixed conveyer and a movable conveyer, a large number of pairs of both conveyers must be assembled to a rotating body such as a chain, and the movable conveyer is lifted from the conveying means to the onion. When it receives, it moves to the closed position, and the closed position is maintained until it is cut by the leaf cutting device, and further, it is switched to the leaf stem cutting open position, the movement of the chain to the inner surface of the side plate supporting the chain. There is a problem that the structure is complicated due to the fact that a guide mechanism such as a cam rail has to be provided along the path, and that a vibrating noise is generated every time the movable transport tool swings for opening and closing.

An object of the present invention is to provide a device which can eliminate the above-mentioned conventional drawbacks by providing a simple mechanism along the holding and conveying path of the holding and conveying means.

[Means for Solving the Problems]

A characteristic configuration according to the present invention is characterized in that the holding and conveying means are arranged in parallel at a predetermined pitch on a rotating body that circulates and rotates to support an onion, and the onion is held in cooperation with the fixed conveying tool. Therefore, it is configured by a guide mechanism arranged along an outer peripheral locus of an up-down reversing path in a holding and conveying path of the fixed conveying tool that is moved by the rotating body. The effects are as follows.

[Work]

As a holding and conveying means, a fixed conveying tool connected to the rotating body is provided as a conveying means for moving the onion while moving along the conveying path, and a guide mechanism is provided as a means for preventing the onion from slipping out of the fixed conveying tool. Therefore, even if the guide mechanism is a fixed type that is installed by corresponding to the upside-down reversing movement path of the fixed carrier moved by the rotating body, a part corresponding to the onion moving supported by the fixed carrier. Therefore, it is not necessary to provide a movable transport tool that swings with respect to the fixed transport tool as in the conventional case.

〔The invention's effect〕

Therefore, unlike the conventional case, it is not necessary to provide a carrier (movable carrier) for changing the posture with respect to the rotating body, and only a fixed carrier is attached. Therefore, it is possible to simplify the mounting structure. Also, the type of attachment can be limited to one type of fixed transport tool, the burden on the design and manufacturing side is reduced, and the fixed transport tool and guide mechanism are of fixed type, so there is little vibration noise. .

〔Example〕

As shown in Fig. 5, the onion harvester (A) is connected to the tractor (B).
The onion (a) is connected to the rear end via a three-point link device (C).
It is composed of a dug up section (1) for dug out and a transport and collection section (2) for transporting the dug up onion (a).

The excavation part (1) is a rake excavation blade body (3) for excavating and picking up onions (a) in the field, and the excavation depth is set by a gauge wheel (40). Support frame (4) for supporting the excavating blade body (3), fixed frame (42) for supporting the upper end of the support frame (4), and relative swinging in the middle of the support frame (4). It consists of a swing arm (44) that pivots as possible. On the other hand, to configure the transmission system to the excavation part (1), the input transmission case (6) on the harvester (A) side and the tractor (B) PTO shaft (7) are transmission-coupled and the input transmission is performed. The transmission shaft (9) is laterally projected from the case (6), and the fixed frame
Along the horizontal axis (X) at the tip of (42), the horizontal axis (X)
The input pulley (46) on the outer side of the fixed frame (42) and the eccentric cam (47) on the inner side of the fixed frame (42) of the horizontal axis (X), and fix the eccentric cam (47) to the frame. The upper end of (4) is fitted. Therefore, the excavating blade (3) moves in an elliptical shape, and the onion (a) can be transferred to the first conveyor (10) together with the root soil. The swing arm (44) and the support frame (4)
A plurality of connecting holes (4a), (44a) are formed at the contact points with and, respectively. By changing the combination of these connecting holes (4a), (44a), the swing amplitude of the support frame (4) can be changed. It can be adjusted.

Next, the transport / collection unit (2) will be described. This transfer / collection section (2) is a first for receiving the dug onion (a) and transferring it to the rear.
Conveyor (10) and onion (a) from this first conveyor (10)
A second conveyor (13) consisting of a lifting / conveying means (11) for receiving and transferring upwards and a holding / conveying means (12) for holding in a held state at the upper part of the lifting / conveying path (c), and a holding / conveying A leaf cutting device (14) for cutting the leaf stem portion (b) of the onion (a) held by the means (12), and a collection unit (15) for collecting the leaf-dropped onion (a), I have it.

The second conveyor (13) will be described in more detail. As shown in FIG. 1, on the second conveyor (13), the rotary body (16) is continuously provided over the lifting transport path (c) in a substantially vertical position and the holding transport path (d) in a horizontal position. A pair of left and right chains (endless rotating bodies) are tensioned by the tensioning mechanism (45) with an appropriate tension, and a large number of laterally extending chains are extended across the pair of left and right chains (16), (16). A transport rod (17) is installed.
As shown in FIGS. 1 and 3, these transport rods (1
7) is a set of four and includes the first, second, third and fourth
Rods (17A), (17B), (17C), (17D) are arranged at the apex position of the trapezoid in a side view and fixed to the chains (16), (16). Four trapezoidal rods (17A), (17A)
B), (17C), and (17D) form a fixed transport tool (18) that receives and transports the onion (a). The chain (1
The connecting structure to 6) will be described in detail. As shown in FIG. 3, the plate member (41) is fixed to the link (16A) of the chain (16), and the first rod (17A) and the second rod (17B) The left and right first plate frames (24), (24) connecting the ends of the third rod (17C) to each other are respectively connected to the left and right plate members (41), (4).
It is mounted on 1) and fixed, and the fixed transport tool (18) is attached to the chain link (16A). By arranging this fixed transfer tool (18) in parallel with the chain (16) at a predetermined pitch,
It is configured as a lifting and conveying means for receiving the onion (a) and transferring it upward. The 4th rod (17D) is the 1st rod (17A)
The second rod (17B) is connected to the third rod (17C) via second and third plate frames (35), (36) arranged on the left and right.

On the other hand, as shown in FIG. 1, in the holding conveyance path (d) where the upper end of the lifting conveyance path (c) is switched to the horizontal posture, the inflection point between the lifting conveyance path (c) and the holding conveyance path (d). (f) part,
A guide mechanism (19) for holding the onion (a) in cooperation with the fixed transfer tool (18) is provided at the position corresponding to the upside down path (d ') in the holding transfer path (d) in correspondence with the moving path. It is arranged in a state of being located on the outer side of the fixed transfer tool (18). As shown in FIG. 4, the guide mechanism (19) has a rod-shaped body (1
A plurality of 9a) are juxtaposed in the left-right direction at intervals that prevent the onions (a) from being pulled out, and the holding and conveying means (12) is configured in cooperation with the fixed conveying tool (18). The guide mechanism (19) is installed only in a portion where the posture of the fixed transfer tool (18) is switched,
It may be stretched over the entire length from the upper end of the lifting conveyance path (c) to the leaf cutting device (14). Also, in particular, the rod (19a)
If a material with high elasticity is used as the onion (a), even if the size of the onion (a) varies, the rod-shaped body (19a) elastically displaces and absorbs, so that the onion (a) is damaged. Disappears.

As shown in FIG. 5, the first conveyor (10) and the second conveyor
(13) Explain the transmission structure for and
Drive shaft of the first conveyor (10) from (9) via the relay shaft (22)
While straddling the first chain transmission mechanism (24) on (23),
A second chain transmission mechanism (26) is stretched across the drive shaft (23) of the first conveyor (10) and the drive shaft (25) of the second conveyor (13).

Next, the leaf cutting device (14) will be described in detail. Figures 1 and 4
As shown in FIG. 5 and FIG. 5, the leaf cutting device (14) includes a clipper-type cutting blade (31) and is arranged at a position where the onion (a) leaf stem portion (b) hangs down. , Onions being transported
(a) The leaf stem (b) is configured to be cut. Onion (a)
The position where the leaf stem (b) hangs is a return route corresponding part where the fixed transport tool (18) is turned upside down and moves to the return route on the lower side. The drive structure of the leaf-cutting device (14) will be described. As shown in FIGS.
(9) and the input shaft (28) transmitted via the belt (27) are installed, and the eccentric cam (29) is attached to the input shaft (28) so that it can rotate integrally, and this cam (29) drives it vertically. The connecting rod (30) is loosely fitted in the cam (29). On the other hand, a drive rod that drives and slides the movable blade (31A) toward the leaf cutting device (14) side.
(32) is provided, and the drive rod (32) and the connecting rod (30) are interlockingly connected via a bell crank (33).

The collecting section (15) is located behind the leaf-cutting device (14) when transported (tractor).
The drop chute (34) located on the side and receiving the onion (a) with the leaf stem (b) cut off, and the onion from this drop chute (34).
Recovery boxes (35), (35) for recovering (a) are placed on both side tables (36). The drop chute (34) is fixed to a support shaft (37) along the longitudinal direction of the fuselage, and by supporting the support shaft (37) rotatably, it is possible to swing up and down around the support shaft (37). It is pivoted and installed in a downward tilted posture to selectively put onion (a) in one of the left and right collection boxes (35) in the working posture, and when putting it in the collection box (35) on the opposite side, it is artificial. The inclination posture is switched and changed. The support shaft (37)
The drive arm (38) having an eccentric cam hole at the outer protruding end of the
Is loosely fitted, and the drive arm (38) is connected to the bell crank (3
3) and interlocking connection via the connecting rod (39), the movable blade (31
The power to A) is branched and vibration is applied to the drop chute (34), which promotes the fall of the onion (a).

[Another embodiment]

The guide mechanism (19) may be a plate-like member provided with a slit for protruding the leaf stem portion (b).

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of an onion harvesting machine according to the present invention, and FIG. 1 is a side view showing a lifting conveyance path and a holding conveyance path.
The figure is an enlarged side view showing the state of conveyance on the holding and conveying path.
FIG. 4 is a front view showing the lifting and conveying means, FIG. 4 is an overall rear view, and FIG. 5 is an overall side view. (1) …… excavation part, (11) …… lifting transport means, (12) ……
Holding and conveying means, (14) ... leaf cutting device, (16) ... rotating body,
(18) …… Fixed transport tool, (19) …… Guide mechanism, (a) …… Onion, (b) …… Leaf stem, (c) …… Lift transport path, (d) ……
Hold and transport path, (d ') ... Upside down path.

Claims (1)

[Claims] 1. An onion (a) excavated at the front end excavation portion (1).
Lifting and conveying means (11) for receiving and transferring upwards, and a leaf cutting device (14) for cutting the lifted onion (a) leaf stem (b) at the upper part of the lifting and conveying path (c). An onion harvesting machine provided with a holding and conveying means (12) for supplying the holding and conveying means (12) to a rotating body (16) which circulates and rotates to hold the onion (a) at a predetermined pitch. And the fixed transfer tool (18) that is moved by the rotating body (16) to hold the onion (a) in cooperation with the fixed transfer tool (18). The onion harvesting machine, which is constituted by a guide mechanism (19) arranged along the outer peripheral locus of the vertical reversing path (d ′) from the upper side to the lower side in the holding and conveying path (d) of FIG.