JPH0815405B2 - Onion harvesting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a lifting and conveying device for lifting a dug-up onion, and a hugging and conveying device in a path for receiving and conveying the onion from the upper end of the lifting and conveying device. The present invention relates to an onion harvesting machine in which a leaf cutting device for cutting a hanging leaf stem portion is provided at a lower end of a vertical reversing path in the embroidery conveying device.

[Conventional technology]

In this type of onion harvesting machine, conventionally, a box with an upper opening for receiving the onion is equipped as a entangled carrying device,
The onion was placed with the leaf stem facing upward, and the onion was inverted at the lower end of the vertical inversion path, and the hanging leaf stem was cut in the inverted state.

[Problems to be Solved by the Invention]

In the case of just carrying it in the box like this, the leaf stem part only hangs down under its own weight and a slight centrifugal force, so it escapes at the moment of contact with the leaf cutting device. However, the cutting may not be performed properly or may not be cut into a required length. This tendency is particularly large when cutting a long length, and improvement in cutting performance has been desired.

The object of the first aspect of the present invention is to provide a device capable of reliably improving the cutting performance by adding a simple mechanism, and the object of the second aspect of the present invention is to cut the cutting performance together with the cutting performance by the rational configuration of the entangled carrying device. The point is to provide something that can eliminate leaks.

[Means for solving the problem]

A characteristic configuration according to the first aspect of the present invention is that the leaf-stem portion that hangs down from a hugging and conveying device is provided at a lower end portion of the vertical inversion path, at a position below the leaf-cutting device, and at a position facing the leaf-cutting device. The feature of the second aspect of the present invention is that a forced pushing mechanism for feeding the onion is provided, and the first transport tool that supports the onion in the path for receiving the onion from the upper end of the lifting transport device and laterally transporting the onion is provided. 1. A point of providing a wrapping conveyance device composed of a first conveyance tool and a second conveyance tool that holds an onion, and at the lower end of the upside-down reversing path that is inverted downward from the end of the lateral feeding conveyance path in the enveloping conveyance apparatus. A point for providing a leaf cutting device for cutting a leaf stem portion depending from the two transport tools, a point for swingably pivoting the first transport tool and the second transport tool with respect to a transport chain, respectively. The first and the first of the chain The pivot portion of the transport device,
A first allowing the first transport tool to swing in a direction approaching the second transport tool from a predetermined posture in which the first transport tool receives and supports the onion.
The point is that the carrier posture regulating mechanism is provided, and the action and effect are as follows.

[Work]

(Operation in the first invention) The forced pushing mechanism can cause the leaf stem portion, which is merely hanging, to be pressed against the leaf cutting device, and the leaf stem portion that comes into contact with the leaf cutting device and tries to escape. Can be maintained in the cutting posture.

(Operation of the Second Invention) As indicated by the characteristic configuration, in which the first carrier is switched from the state of supporting the onion to the state of holding the onion in the upside-down path, the second carrier is By virtue of the structure that can freely swing in the direction in which it approaches, the first
The leaf stem is pressed against the leaf cutting device by the self-weight of the carrier and inertial force in the reversing process, and the escape of the leaf stem is suppressed. Moreover, since the first transport tool swings closer to the second transport tool in the process of switching its posture in the up-down reversal path, the first transport tool pushes the leaf stem portion, and the first transport tool and other metal fittings. The leaf stem wrapped around is also separated and returned to a position where it can be cut.

〔The invention's effect〕

As a result, it is possible to more reliably cut the leaf stem portion with a predetermined length, and it is possible to provide a blade with improved cutting performance without leaving the wound leaf stem portion uncut. .

〔Example〕

As shown in FIG. 5, the onion harvester (A) is connected to the rear end of the tractor (B) through a three-point link device (C), and a dug portion (1) for digging the onion (a). ) And a transport / recovery section (2) for transporting the dug onion (a).

The digging portion (1) has a rake-shaped digging blade body (3) for digging and picking up an onion (a) in a field, and a digging depth is set by a gauge wheel (40). The frame (4) for supporting the excavating blade (3) so as to be able to swing back and forth around the horizontal axis (X), and the drive frame (5) for swinging the support frame (4). On the other hand, in order 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 interlockingly connected and this input transmission is performed. A transmission shaft (9) is laterally projected from the case (6), and eccentric cams (not shown) are attached to both ends of the horizontal transmission shaft (9), and the drive frame (9) is attached to the eccentric cam. The base end of 5) is externally fitted, and the drive frame (5) is driven by an eccentric cam to swing the support frame (4) back and forth, and the excavating blade body (3) swings. A) is dug up.

Next, the transport / collection unit (2) will be described. As shown in FIG. 2 and FIG. 3, the transport and recovery section (2) includes a first conveyor (10) for receiving the dug onion (a) and transporting it to the rear, and the first conveyor (10). Conveyer (11) for receiving the onion (a) from the above and transferring it upwards, and a second conveyer comprising a catching conveyer (12) for holding the onion (a) at the upper part of the lift conveyer path (c) (13), a leaf cutting device (14) for cutting the leaf stem portion (b) of the onion (a) held by the entrainment transporting device (12), and the leaf-removed onion (a). And a recovery unit (15).

The second conveyor (13) will be described in more detail. As shown in FIG. 2, the second conveyer (13) has a substantially vertical lifting conveyance path (c) and a horizontal posture wrapping conveyance path (d).
A pair of left and right chains (endless rotating bodies) as the rotating body (16) are stretched continuously while being provided with an appropriate tension force by the tensioning mechanism (45). A large number of lateral transfer rods (17) are installed across 16) and 16). As shown in FIGS. 2 and 4, the pedestal (20) is attached to one link plate of the chain (16), and the transfer rod (17) is attached via the pedestal (20). I am doing it. That is, the bracket (21) having an L-shaped cross section as a pivotal support is attached to the pedestal (20), and the brackets (21) and (21) attached to the left and right chains (16) and (16), respectively. A first transport rod (17A) is installed over the entire length. For this first transfer rod (17A),
A first carrier tool (18) for receiving the onion (a), and a second carrier tool (19) for hugging the onion (a) in cooperation with the first carrier tool (18) in the hugging carrier path (d). Are connected. Next, the first transfer tool (18) includes a second transfer rod (17B), a third transfer rod (17C), and a fourth transfer rod (17D) which are arranged at the apex position of the trapezoid in a side view. ) Is placed on the plate member (41) to be connected, and the plate member (41)
The tip holder (41A) is loosely fitted to the first carrying rod (17A), and is pivotally supported about the axis of the first carrying rod (17A) so as to be swingable. A pin (27) is projected from the inner surface of the bracket (21) toward the onion (a) transport space, and the plate member (41) is received by the pin (27) to further swing. regulate. The pin (27) is referred to as a posture regulating mechanism that regulates the posture of the first transport tool (18).

On the other hand, a second transport tool (19) is provided on the opposite side of the first transport tool (18) across the first transport rod (17A), and the second transport tool (19) is substantially side view. The fifth carrying rod (17E) and the sixth carrying rod (1
7F), the seventh transfer rod (17G) is placed on the plate member (42) and connected, and the tip holder (42A) of the plate member (42) is loosely fitted to the first transfer rod (17A). Further, the rod is pivotally supported about the axis of the first carrying rod (17A). Rollers (29) are attached to the right and left sides of the seventh carrying rod (17G) in a freely rotating state, and the chain (1
6) Can roll on the top. In addition, the plate-shaped posture regulating tool (33) is attached to the tip holder (42A) of the plate member (42).
As shown in FIG. 3, in order to discharge the onion (a) and ensure the transfer to the cam rail (8) described later on the roller (29) in the descending return path, The plate-like restricting tool (33) contacts the fixed-side attitude changing plate (64) to restrict the second carrying tool (19) to the transfer attitude. As described above, the first transfer tool (18) and the second transfer tool (19) form a pair and are installed in plural pairs on the chain (16) at regular intervals so that the onions can be transferred sequentially.

 From the above configuration, the carrying state of the onion (a) will be described.

The onion (a) conveyed from the first conveyor (10) is received by the first conveying tool (18) whose posture is regulated by the pin type posture regulating mechanism (27) and is lifted upward.
Since the roller (29) is placed on the chain (16) in the lifting conveyance path (c), the onion (a)
It is in an open position that has no effect on. When the onion (a) reaches the upper part of the lifting and conveying path (c), the roller (29) passes through a guide portion (8a) formed by a pair of upper and lower cam rails (8), so that the second conveying tool (19). ) Changes its posture to a closed posture in which the first conveying tool (19) and the onion (a) are held so as to be held. In the entrainment conveyance path (d), the swing of the roller (29) toward the open side is restricted by the cam rail (8), and the second conveyance tool (19)
Keeps the closed posture holding the onion (a) up to the discharge position (e) to the recovery part (15).

At this discharge position (e), the guide by the cam rail (8) is released, and the support of the roller (29) is lost at this position, so the second carrier (19) swings toward the open side by the onion (a). At the same time, the onion (a) is discharged onto the belt conveyor (39) described later. Attach the first carrier (18) and the second carrier (19) to the same chain (16),
It constitutes a carry-in carrying device (12).

As shown in FIG. 5, the transmission structure for the first conveyor (10) and the second conveyor (13) will be described. The first conveyor (1) is transferred from the lateral transmission shaft (9) through the relay shaft (22).
The first chain transmission mechanism (24) is stretched over the drive shaft (23) of (0), and the drive shaft (23) of the first conveyor (10) and the drive shaft (25) of the second conveyor (13) are installed. The 2nd chain transmission mechanism (26) is spanned over.

Next, the leaf cutting device (14) will be described in detail. As shown in FIG. 5, the leaf cutting device (14) is equipped with a hair clipper type cutting blade (3
2) is provided, and the onion (a) is placed at a position where the leaf stem (b) of the onion (a) hangs down, and is configured to cut the conveyed onion (a) leaf stem (b). The position at which the leaf stem (b) of the onion (a) hangs refers to the carrying carrier (1
8) and (19) are the return route corresponding parts that are turned upside down and moved to the return route on the lower side. The drive structure of the leaf cutting device (14) will be described. As shown in FIG. 5, the input case (28) transmitted to the lateral transmission shaft (9) and the belt (36) is provided, and the input case (28) is provided. 28) A drive shaft for a belt conveyor (39) for laterally feeding the discharge onion (a) is extended to a drop chute (34) described later, and the leaf cutting device (14) is extended from this drive shaft via a drive linkage mechanism. It is receiving power transmission.

The recovery unit (15) includes a belt conveyor (39) arranged in front of and below the leaf cutting device (14), and drop chutes (34) arranged corresponding to the left and right ends of the belt conveyor (39). (34) consists of This conveyor belt (39)
Is installed across the left and right, and either forward or reverse is used in order to receive the onion (a) discharged at the discharge position (e) of the entrainment conveyance path (d) and throw it into the drop chute (34) on either side. It is driven in that direction.

As shown in FIG. 3 and FIG. 7, the cam rail (8A) corresponding to the starting end of the lifting conveyance path (c) that receives the onion (a) from the lowermost end of the return path is fixed to the side plate (30). The mud and foliage, which are installed at intervals and fall from the lifting and conveying route (c), are dropped through the interval so that mud is not buried between the side plate (30) and the cross section of the cam rail (8A). It is configured to have a circular shape to enhance its effect. Therefore, it is possible to prevent the turning radius from changing when the mud or the like is buried in the cam rail (8A) and the rotation of the second transport tool (19) not being performed properly.

As shown in FIG. 1, in the vertically inverted path of the entrainment transfer path (d), the second transfer tool (19) moves in the posture supported by the cam rail (8), but the first transfer tool (1
8) freely swings in a direction away from the pin (27) and close to the second transfer tool (19). Leaf stem portion (b) that is not wound or cut around the first transfer tool (18) during this free rocking
Is switched to a cutting posture in which the first transfer tool (18) is forced to hang vertically downward. Therefore, the leaf stem (b)
The cutting performance can be improved.

As shown in FIG. 1 and FIG. 6, at the lower end of the upside-down reversing path in the wrapping conveyance path (d), in a state of facing the leaf cutting device (14) and below the leaf cutting device (14). At the position, a plurality of laterally long strip-shaped rubber plates (31a) are attached to the drum (31b) at equal intervals in the circumferential direction, and the drum (31b) is rotationally driven to move the first and second conveying tools (18). ), (19), and a forced pushing mechanism (31) for pushing the leaf stem portion (b) from the leaf cutting device (14). This forced pushing mechanism (31)
It is driven by the power from the belt conveyor (39).

[Other Embodiments] The forced pushing mechanism (31) may be one that reciprocates at a constant cycle instead of rotating, or a dedicated driving device may be provided.

The posture regulating mechanism (27) of the first transport tool (18) is not limited to the pin type and may be of another form.

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, FIG. 1 is a side view showing a state of a first carrying tool for pushing an onion into a cutting attitude, and FIG. 2 is a first carrying tool according to an attitude regulating mechanism. FIG. 3 is a side view showing a state in which the onion receiving posture is restricted, FIG. 3 is a side view showing a transport path of the onion, and FIG. 4 is a first transport tool and a second transport tool.
FIG. 5 is a plan view showing the carrier, FIG. 5 is an overall side view, FIG. 6 is a plan view of a forced pushing mechanism, and FIG. 7 is a sectional view taken along line VII-VII of FIG. (11) …… Lift carrier device, (12) …… Holding carrier device, (14) …… Leaf cutting device, (16) …… Carrier chain,
(18) …… First carrier, (19) …… Second carrier, (21)
...... Pivot, (27) ...... First carrier posture control mechanism, (3
1) …… Forced pushing mechanism, (a) …… Onion, (b) ……
Leaf stem.

Claims (2)

[Claims] 1. A lifting / conveying device (11) for lifting a dug-up onion (a) is provided, and a catching / conveying device (12) is provided on a path for receiving and conveying the onion (a) from an upper end of the lifting / conveying device (11). And a leaf cutting device (14) for cutting the hanging leaf stems (b) at the lower end of the upside-down inversion path of the entangled transfer device (12). At the lower end, a leaf stem portion (b) depending from the embracing and conveying device (12) is provided at a position below the leaf cutting device (14) and facing the leaf cutting device (14). An onion harvester equipped with a forced pushing mechanism (31) that feeds it toward (14). 2. A lifting / conveying device (11) for lifting the excavated onion (a) is provided, and the onion (a) is received from the upper end of the lifting / conveying device (11), and the onion (a) is laterally fed and conveyed. A first carrier tool (18) that supports and a second carrier tool (19) that cooperates with the first carrier tool (18) to hold the onion (a).
And the carrying tools (18) and (19) are provided at the lower end of the up-down reversing path that is inverted downward from the end of the lateral feeding conveying path in the enclosing conveying apparatus (12).
Leaf-cutting device (14) for cutting the more drooping leaf stem (b)
Is provided, and the first transfer tool (18) and the second transfer tool (19)
And are pivotally supported respectively on the transport chain (16) so that the first and second transport chains (16) are
The first support tool (18) is attached to the pivot portion (21) of the transfer tool (18).
Regulates swinging in a direction away from the second transport tool (19) from a predetermined posture for receiving and supporting the onion (a) and swinging in a direction approaching the second transport tool (19). The onion harvester according to claim 1, further comprising a first transport tool posture restriction mechanism (27) that allows the onion.