JPH066019B2 - Harvester weeding equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a weeding device used for cutting and harvesting planting stem culms such as straw grass, and more specifically, to a front end of a rod in a forward-downward posture. A holding means for holding at one point and a supporting means for supporting the rear end of the rod are provided, and the supporting means is driven so that the rear portion of the rod moves with a predetermined amplitude in the machine width direction. The present invention relates to a weeding device for a harvester equipped with a rod driving mechanism.

[Prior Art] Conventionally, as a weeding device of this type, for example, JP-A-61-61
As shown in Japanese Laid-Open Patent Publication No. 21021, the rear end of the rod is
The weeding action is obtained by simply rotating the rod so as to draw a spindle-shaped locus around the axis of rotation that is eccentric from the center line of the rod and extends along the longitudinal direction of the fuselage.

[Problems to be Solved by the Invention]

Here, considering the conventional weeding device, the weeding device of the conventional example revolves the rod without revolving, so in other words, the predetermined surface of the rod is based on the body of the harvester. Since it is always driven and rotated in a fixed direction, for example, relative to the stem culm on which the rod acts, compared to driving with the rear end of the rod connected and fixed to the crank arm for revolution. As a result of the reduced speed, the stalk wrapping around the rod is reduced.

However, even if the weeding device is configured as in the conventional example, the stem culm may be wound around the rod body by sliding contact caused by the revolution at the contact portion between the rod and the stem culm, and there is room for improvement. is there.

An object of the present invention is to obtain a weeding device in which stalks are hardly wound as much as possible by rational modification.

[Means for Solving the Problems]

A feature of the present invention is that it comprises a holding means for holding the front end of the rod in the forward descending posture at substantially one point, and a supporting means for supporting the rear end of this rod, and the rear portion of the rod has a predetermined widthwise direction. In the weeding device of the harvester provided with the rod driving mechanism for driving the supporting means so as to move with the amplitude of, the rod driving mechanism is such that the movement locus of the rod is substantially conical at least in the front part of the rod. So that the supporting means is driven and rotated about a rotation axis center in the machine longitudinal direction located away from the center line in the rear portion of the rod, and a rod drive about the rotation axis by the revolution mechanism. And a rotation mechanism for rotating the rod around the center line of the rod in a direction opposite to the direction of rotation. Further, the rotation speed of the rod by the revolution mechanism and the peripheral speed of the rod by the rotation mechanism are set to the rod. And the culm There in that the relative velocity at the contact site is set to a degree that becomes zero, its action and effects are as follows.

[Action]

According to the above feature, when the weeding device is in operation, the rod is driven in a substantially conical locus around the axis of rotation by the operation of the revolving mechanism. Therefore, as shown in FIG. Along with this, the rod expands the space between the stalks and exerts a weeding action, and at the time of this weeding, the relative speed at the contact site between the rod and the stalk becomes zero due to the operation of the rotation mechanism, so Not only is it difficult to wind around the rod, but also damage to the stalks due to movement caused by the revolution and rotation of the rod is greatly reduced.

In other words, in the present invention, the relative speed between the rod and the stem culm at the time of weeding is not simply reduced as in the conventional example, but by the rotation of the rod, the relative velocity with the stem culm is reduced to zero. It further suppresses the winding of the stem culm around the rod and at the same time further suppresses the damage of the stem culm.

〔The invention's effect〕

Therefore, by modifying the conventional weeding device to the extent that a rotation mechanism is added, the structure was originally designed to move the rod in a form that makes it easier for the stem to be wound. We have obtained a weeding device that enables various weeding, and that does not damage the stem culm even if the rod revolves at high speed.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in Fig. 3 and Fig. 4, a pair of left and right divided vegetation (1), (1) that are driven and rotated, and planting strawberries from the weeding devices (1), (1) are introduced and raised. A pair of left and right raising devices (2), (2), a clipper-type reaping device (3) for cutting the origin of the raised straw grass, and a lateral conveying device that nips the upper portion of the cut straw grass and sends it laterally.
(4), a selection device (5) for picking up scraped straw grass by locking and transporting the root side of the strawberries sent by the lateral transport device (4) toward the front (right side in FIG. 3), a sorting device ( A bundling device that bunches the bundle of strawberries after the sorting process that has been set to the tilted posture by the action of 5)
(6), a deck for placing a bundle of bundled strawberries (7) A unit for strawberries harvesting that is equipped with each unit is connected to a traveling device (A) consisting of an agricultural tractor as an example of a harvester. Make up the straw grass harvester.

As shown in the figure, the traveling vehicle (A) is used in a state in which the driver's seat (8) of the agricultural tractor, the steering handle (9), etc. are changed in the front-rear direction with respect to the vehicle of the agricultural tractor. Power from tractor is transmitted to unit
The structure of each device and the like will be described, which is transmitted via (10) and is connected so as to adjust the ground level of the unit by the operation of the lift arm (11) provided on the tractor.

The weeding device (1) holds the front end of the weeding frame (12) at its front end via a ball joint (13) as a holding means and rotates its rear end at a supporting means. A rod (1a) that is rotatably supported around an axis (P) and is gently curved in a forward-downward posture, and the rod (1a) is drawn in a spindle-shaped trajectory as shown in FIG. ) It is composed of a rod driving mechanism (1b) that is driven to rotate around, and the raising device (2) has a pair of upper and lower sprockets (2a) and (2a), as shown in FIG.
The endless chain (2b) wound around them has a large number of undulating claws (2c), and a case (2b) for accommodating them. Pulley (4a)
, And a pair of pinching belts (4b), (4b) wound around these and made of a flexible material so as not to damage the straw grass, and the sorting device (5) is a front and rear pair as shown in FIG. The endless chain (15) wound around the sprocket (14), (14) is provided with a large number of undulating claws (16), and the interior of the case (17) has three vertically arranged curls. Part (5A) and this gooseberry part
(5A) is composed of a pair of left and right rotating drums (5B) for further discharging the waste straw grass forward toward the front, and also the binding device (6) side on the root side of the strawberries after the sorting treatment To assist the feeding to the belt, the protruding belts (18) and (18) are provided.

Then, during the harvesting work, the strawberries whose roots have been cut are set in a tilted posture in which the roots of the roots are forward because they undergo a sorting action with the upper part being clamped by the lateral transport device (4). It is bound by the binding device (6) and discharged onto the deck (7).

Further, the weeding device (1) has a drive system configured as follows in order to reduce the wrapping of the straw grass.

That is, as shown in FIG. 1, the rod driving mechanism (1b) is
A drive shaft (19), a support case (20) that houses the drive shaft (19),
A fixed shaft (21) cantilevered to the support case (20), a rotary case (22) loosely fitted to the fixed shaft (21), and a rotary case (22) driven by power from a drive shaft (19) Rotating bevel gear mechanism (2
3), the rotating shaft (2) cantilevered on the rotating case (22).
4), which is a chain transmission mechanism (25) which is installed in the rotating case (22) and links the fixed shaft (21) and the rotation shaft (24), and the rod (1a) with respect to the rotation shaft (24). The rear ends of are connected.

The bevel gear mechanism (23) and the rotating case (22) are collectively referred to as the revolution mechanism (R), and the fixed shaft (21) and the chain interlocking mechanism (25)
Are collectively referred to as a rotation mechanism (S).

Further, the chain interlocking mechanism (25) includes a first sprocket (25a) provided on the fixed shaft (21), a second sprocket (25b) provided on the rotation shaft (24), and an endless chain (25c) wound around these. And the number of teeth of the second sprocket (25b) is set to 1/2 of the number of teeth of the first sprocket (25a).
When 9) is driven and rotated, as shown in Fig. 2, the rod (1a)
While the rod (1a) rotates in the direction opposite to the direction of revolution of the rod,
The relative rotation speed is set to zero at the contact portion between (1a) and the strawberry (T).

By the way, the left and right weeding devices (1), (1) have their respective drive shafts (19),
The (19) is interlocked and coupled via the endless chain (26) to operate synchronously, and the shaft center (P) of the fixed shaft (21) substantially coincides with the revolving shaft center of the rod (1a).

[Another embodiment]

In addition to the above embodiment, the present invention can be carried out by interposing three gears between the fixed shaft and the rotation shaft,
It is also possible to configure the weeding device by including an electric motor that independently drives the revolution mechanism and the rotation mechanism.

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 the weeding device of the harvester according to the present invention,
1 is a sectional view showing a drive structure of the weeding device, FIG. 2 is a view showing movement of a rod, FIG. 3 is an overall plan view of a harvester, FIG. 4 is an overall side view of a harvester, and FIG. FIG. 5 is a side view showing the state of the sorting process and the like. (1a) …… rod, (1b) …… rod drive mechanism, (P) …… rotation axis core, (R) …… revolution mechanism, (S) …… rotation mechanism.

Claims (1)

[Claims] 1. A holding means for holding the front end of the rod (1a) in a forward descending posture at substantially one point, and a supporting means for supporting the rear end of the rod (1a), and the rod (1a) A weeding device for a harvester provided with a rod driving mechanism (1b) for driving the supporting means so that the rear part moves with a predetermined amplitude in the machine width direction, the rod driving mechanism (1b) The movement locus of the rod (1a) is
An orbit for driving and rotating the supporting means around a rotation axis core (P) in the longitudinal direction of the machine body which is located away from the center line in the rear part of the rod (1a) so that at least the front part of a) has a substantially conical shape. The mechanism (R) and the rod (1) around the rotary shaft core (P) by the revolution mechanism (R).
(a) is composed of a rotation mechanism (S) that rotates the rod (1a) in the direction opposite to the direction of drive rotation around the center line of the rod (1a), and a rod formed by the revolution mechanism (R). The rotation speed of (1a) and the peripheral speed of the rod (1a) by the rotation mechanism (S) are set to such an extent that the relative speed at the contact portion between the peripheral surface of the rod (1a) and the stalk is zero. Weeding equipment for harvesting machines.