JPH0889020A - Mud-removing part structure of crop seedling harvester - Google Patents

Abstract

PURPOSE: To obtain a mud-removing structure having sure and effective mud-removing function without causing the unnecessary lateral swinging motion of the seedling and exhibiting excellent performance such as the removal of mud from a part unable to clean by conventional method by providing a pair of right and left mud-removing claws and laterally reciprocating the claws opposite to each other relative to the transfer direction to effect the removal of mud. CONSTITUTION: This mud-removing structure is provided with a clamping and hoisting apparatus to transfer a dug-up seedling upward to the back in suspended state and a mud-removing transfer apparatus acting on the root of the seedling to apply a transfer force while removing the mud from the root. The mud-removing transfer apparatus has a number of mud-removing claws 18 to be thrust into the root and attached to a circulating chain 19a in laterally movable state. The mud-removing claws 18 are oscillated by an oscillation driving mechanism 3B. A number of claw pairs T having mud-removing claws 18 arranged at the right and left sides and laterally oscillating to act on the root of the transferred seedling are attached to the circulating chain 19a and driven in opposite directions by the oscillation driving mechanism 3B to move the right and left mud-removing claws 18, 18 in the directions opposite to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crop seedling harvesting machine that mechanizes a series of operations for digging and harvesting a mother plant of a root-rooting crop seedling such as straw grass. The technology for realizing the drop function.

[0002]

2. Description of the Related Art As a crop seedling harvesting machine, the actual Kaihei 4-8
The one disclosed in Japanese Patent No. 0307 is already known. This publication discloses mechanization of a series of seedling harvesting processes from digging of straw grass in the ground to dropping it into a body and collecting it.

[0003]

SUMMARY OF THE INVENTION According to the above publication,
The lifting and conveying direction of the seedlings suspended by the sandwiching and lifting device (reference B) and the conveying direction by the mud-removing device (reference C) by the pair of protruding belts are relatively arranged, and
They are set so that their conveying speeds are equal to each other.

Although the above-mentioned conventional technique can obtain the characteristic that the posture of the seedlings is unlikely to change even after passing through the mud-removing device, it seems that there is room for improvement in terms of mud-removing. The reason is that the mud dropping claws rush into the root part from the lateral side, but the mud dropping claws become relatively stationary with respect to the root part except in the direction of entry, so that the mud can be effectively dropped. Is difficult. An object of the present invention is to obtain a crop seedling harvester capable of exhibiting a more effective mud removing effect by devising a mud removing device.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention provides a sandwiching method for lifting and conveying a seedling excavated from the ground rearward and upward in a hanging posture with its stem portion sandwiched. Equipped with a lifting device and a sludge transporting device that acts on the roots of the seedlings transported by this and removes the mud at the roots while applying a rearward transport force along the sandwich lifting device. By swinging the transport device in the left-right direction, a large number of pairs of claws, which are arranged side by side on the left and right of the mud-removing claws that act on the roots of the seedlings that are nipped and transported, are attached to the endless rotation band, It is characterized in that it is provided with a drive swinging mechanism for driving the left and right mud dropping claws to face each other so as to swing in opposite directions.

[0006]

According to the structure of claim 1, the detailed description will be made in the embodiment, but since the mud dropping claws reciprocate laterally with respect to the seedlings to be conveyed, the mud dropping conveying device and the sandwiching and lifting device are provided. Regardless of the difference in the conveying speed, the mud-cleaning claws continuously exert the mud-cleaning action, and the mud-falling claws do not stand still with respect to the root as in the conventional case. And
Since the mud dropping claws move in the transport direction of the sandwiching and lifting device while swinging to the left and right, it is possible to apply a transport force to the root while sludge is being slid, and the transport of the root may be delayed or the mud dropping resistance It is possible to convey the stalk in a good hanging posture without causing any inconvenience that the stem is damaged by the pulling force due to.

Further, since the left and right mud dropping claws of the pair of claws are driven to face each other so as to swing in opposite directions, the swinging inertias of the claws cancel each other out, and the swing and vibration caused by the swinging occur. Will not occur. Therefore, it is possible to perform lateral drive effective for mud dropping without swinging the seedlings to the left and right.

According to the second aspect of the invention, the rocking loci of the left and right mud dropping claws can be expanded to the range where they overlap with each other, and the mud dropping action can be further strengthened by the large amplitude. If the mud-dropping claw is moved in the front-back direction (transport direction), a couple of force will be generated due to that, but since there are many pairs of claws in the transport direction, it is possible to cancel that couple of force, and the mud-dropping will be performed. There is no adverse effect such as disturbance of action.

[0009]

As a result, in the mud dropping structure according to the first aspect, the pair of left and right mud dropping claws are oscillated opposite to each other in the lateral direction with respect to the conveying direction so as to remove the seedlings unnecessarily. It was possible to provide a reliable and more effective mud-removing function without rolling, and to perform the mud-removal of the parts that could not be sludge-removed in the past. In addition to the above-mentioned effects, the mud dropping structure according to claim 2 has an advantage that the mud dropping function can be further strengthened.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a harvester for a straw seedling strain, which is an example of a crop seedling. An excavating device 1 for excavating a seedling M in the ground, a sandwiching and lifting device 2 for suspending the seedling M excavated by the excavating device 1 and lifting it backward and upward, and a sandwiching and lifting device 2
The traveling machine body 4 is provided with a mud-removing transporting device 3 that removes the mud of the seedlings M in a suspended transfer state by the traveling machine body 4, and the traveling machine body 4 has a pair of left and right crawler traveling devices 5, 5, a driving unit 6, an engine 7, and the like. It is equipped with a straw harvester plant harvester.

The excavation device 1 is a lifting / lowering device in which a pair of left and right sleds 8 and 8 mounted on a work frame 10 and a pair of left and right plows 9 and a pair of left and right conveyor belts 11 and 11 are arranged to face each other. It is composed of the front end portion 2a of the feeding device 2. The nip-lifting device 2 includes a front transport unit 2A having a steep rear upslope,
It is made up of a gentle rearward-inclined rear transport unit 2B, and both transport units 2A, 2B are paired with left and right transport belts 11, 11.
It is configured such that the front and rear rolling wheels 12 and 13 are supported by the work frame 10. The front and rear transport units 2A and 2B are
In order to ensure the delivery of the seedlings M, they are partially overlapped with each other in the front and back, and the rear transport section 2B extends to the vicinity of the rear end of the machine body 4 to hold the stems of the seedlings M over a long distance. And hang and transfer.

Explaining the excavation part 1 in detail, as shown in FIGS. 3 and 4, the sled 8 is formed in a cross-section ∪ shape composed of left and right sled side surfaces 8A, 8A and a grounding surface 8B. The right sled 8 on the already cut side is formed on the ground contact surface 8B wider than the left sled 8 on the uncut side, and the ground contact area is increased as much as possible so that a stable sled action can be exhibited. The plow 9 is a front view L composed of a vertical plow part 9A and a horizontal plow part 9B.
It is formed in a letter shape, and is attached to a portion of the inner surface 8A of the sled 8 which is recessed inward.

A portion of the sled side surface 8A on the seedling side near the ground surface is formed on a flank side surface 8a inclined laterally outward, and a vertical plow portion 9A is a flank longitudinal surface inclined laterally outward. 9a. This is a seedling M as shown in FIG.
Has a sprout m and its root mn formed around the plant body, and has a downwardly swollen shape. Therefore, by adjusting the shapes of the sled 8 and the plow 9 to match them, the sled side surface 8A
The vertical guides 9A and the vertical plowed surface 9A prevent the shoots m from being scratched or chipped, and an effective guide action and cut K formation near the side of the plant can be performed.

Further, as shown in FIG. 4, the seedling M starts to be sandwiched by the pair of conveyor belts 11 (specifically, the front and rear central portions of the stem and the rotation axis Y of the front wheel 12 are seen from a side view). In a matched state, the horizontal plow 9B is located at the front-rear intermediate portion of the root, and the plow 9 and the conveyor belt 11 pair are arranged relatively to each other so that the cut K is not completely formed.

As shown in FIGS. 1 and 2, a weeding device 15 for weeding the planted seedlings M is provided in a state of being arranged above the sleds 8, 8 on the left and right. The vertical weeding device 15
It is composed of a winding drivable chain 17 having a weeding claw 16, and the weeding claw 16 is adapted to automatically switch between a protruding weeding action posture and a retracted retracted posture, and hang down. Or stalk while straightening the stem so that it can be easily pulled out.

As shown in FIGS. 5 to 7, the mud-dropping conveying device 3 shakes a large number of mud-dropping claws 18 that can act on the root portion n of the seedlings to be nipped and conveyed in the left-right direction with respect to the seedling-conveying direction. It is provided with a pawl transport mechanism 3A attached to a rotary chain (corresponding to an endless rotary band) 19 in a movable state, and a drive rocking mechanism 3B for rocking the mud dropping pawl 18 in the left-right direction. ing. Next, each mechanism will be described in detail.

The claw transport mechanism 3A is provided with front and rear sprockets 2.
A rotating chain 19 is wound around 0 and 20, and a horizontally elongated substrate 21 mounted on a chain link 19a is spaced at predetermined intervals so that it can swing around a front-rear axis P and has a substantially V-shaped sludge drop. The claws 18 are pivotally supported in two left and right rows. The mud dropping claw 18 is formed by bending a bar material, and in order to stabilize the conveyance posture of the wide substrate 21, a pair of left and right guide bars 2 that slidably contact the lower surfaces of the left and right bent ends of the substrate 21.
2 and 22 are provided.

The drive swing mechanism 3B has a pair of left and right support shafts 23a, 23 arranged immediately below it along the longitudinal axis P.
Operation bar 2 with a reverse U-shaped bar that is long in front and back in side view
The operated arms 2 which support the interlocking members 23 and 23 formed by fixing 3b and 23b and are attached to the respective support shafts 23a.
4 and the interlocking rod 26, which is bearing-fitted to the rotationally driven crankshaft 25, is pivotally mounted. The shaft center X of the support shaft 23a is parallel to the shaft center P of the mud dropping claw 18, and the operation bar 23b is located at the crotch of the mud dropping claw 18 on the rearward moving side, which is the upper side of the rotary chain 19, and the lower side. On the forward moving side, which is the side, the shaft 2 is attached to the crotch of the mud dropping claw 18.
3a is located.

When the rotational power is transmitted to the crankshaft 25,
The left and right interlocking members 23 reciprocally swing back and forth around the front-rear axis X to swing the mud dropping claw 18 on the upper side to the left and right within a predetermined angle range, and the lower side in a state of straddling the support shaft 23a. The mud dropping claw 18 at is moved forward without swinging left and right. Therefore, the claw transport mechanism 3 that drives the rotary chain 19 to transport the two rows of mud dropping claws 18, 18
When the drive rocking mechanism 3B is driven in the driving state A, the interlocking member 23 and the mud dropping nail 18 are slidably contactable with each other. Share M
It effectively loosens the root n of the rice and removes the mud.
That is, a pair of left and right mud dropping claws 18, 18 are arranged side by side to form a pair of claws T.
The drive swing mechanism 3B functions so that the drive swing mechanisms 8B and 8 are driven to face each other so as to swing in opposite directions.

That is, in the state in which the drive swinging mechanism 3B drives the reciprocating swinging movement of the interlocking member 23 extending along the conveying direction across the plurality of mud dropping claws 18 that move into the root n of the seedling M. In addition to being provided and configured, the interlocking member 23 is set to a sliding contact guide structure in which the mud dropping claws 18 are laterally abuttingly interlocked with each other while allowing the conveying movement of the mud dropping claws 18 that are moved by the drive of the endless rotation band 19. There is. As shown in FIG. 6, when the left and right mud dropping claws 18, 18 are swung toward the side closer to each other, each mud dropping claw 18, 1 is viewed in the transport direction.
Right and left mud dropping claws 18 and 1 so that the movement trajectories of 8 may interfere.
8 is displaced in the front-rear direction.

The sludge transporting device 3 is also supported by the work frame 10, and the work frame 10 has a fulcrum shaft 27 which will be described later.
It is swingable about its axis Q and can be driven up and down by the expansion and contraction movement of the hydraulic cylinder 14 installed over the work frame 10 and the machine body 6. That is, the entire harvesting work device A including the digging device 1, the sandwiching and lifting device 2, the sludge transporting device 3, etc. is mounted on the machine body 6 so as to be capable of being driven up and down, and the work frame 10 is lifted and lowered according to the ground situation. Even so, the relative positional relationship between the picking and lifting unit 2 and the mud-falling transport device 3 and the harvesting work device A does not change.

The transmission system will be briefly described. As shown in FIGS. 1 and 2, the output shaft 7a of the engine 7 and the counter shaft 28 at the front end of the machine body are belt-interlocked with each other, and from this counter shaft 28, the crawler traveling device 5 and the fulcrum. A belt is interlocked with the shaft 27. From the fulcrum shaft 27, the front crank shaft 25 and the front sprocket 20 of the pawl transport mechanism 3A are interlocked, and from the rotary shaft 20a of the front sprocket 20 to the relay shaft 2
The belt is linked to 9. The relay shaft 29 is interlocked with the sandwiching and lifting device 2 through the upper transmission shaft 30 and the weeding device 15 through the lower transmission shaft 31, and the rear wheel shaft of the front transport unit 2A. The shaft is transmitted from 32 to the rear transport unit 2B.

Next, a series of harvesting operations of this harvester will be described. With the progress of the aircraft, the left and right plows 9 and 9 create cuts K on the left and right of and below the planting Mushroom seedling strain M, while the right and left sleds 8 and 8 and the weeding device 15 divide the seedling M. The stalks of the seedlings M begin to be sandwiched between the conveyor belts 11 and 11 of the front conveying section 2A in the state where the cuts K are formed to facilitate excavation, and the seedlings M are pulled out from the ground by the conveying force. At the same time, the stalks are clamped and lifted backward and upward.

Then, in the state of being suspended and transported by the rear transporting section 2B, the mud transporting apparatus 3 loosens the root while loosening the roots. The transport speed by the rear transporting section 2B is V ₁ , and the mud dropping is performed. Transport speed by the transport device 3: V ₂
Then, the respective drive speeds are set so that the relationship of V ₂ > V ₁ is established. By the way, V ₁ = 0.35m / s , V ₂ = 0.40m / s By this speed setting, the mud-releasing action is given to the root part of the seedling M such as the rear part, the central part, and the front part of the root part. The seedlings M, for which the operation of the mud-dropping transport device 3 has been completed, fall and are collected by the collecting unit 33 at the rear of the machine body.

[Other Embodiment] As shown in FIGS. 8 to 10,
The mud dropping claw 18 may have a four-claw structure in which a claw member 18a formed by bending a rod into a substantially U shape is welded and integrated with a rotary fulcrum pin 18b also formed of a rod. Claw member 18
The reference character a includes a parallel portion on the side of the rotation fulcrum pin 18b and a widened portion on the side of the tip, and the operation bar 23 is different from that of the present embodiment.
The position of b can be moved closer to or further from the rotation fulcrum pin 18b. If they are arranged close to each other, the rocking angle of the mud dropping claw 18 is increased, so that the height can be reduced. It is possible to stabilize the operation and reduce the stress at the contact point.

Then, the mud dropping claw 18 having a single claw
Alternatively, the pair of pawls T may be configured by slightly displacing the front and rear and arranging them side by side. In this case, if the front and rear positional deviation relationship between the pair of claws T adjacent to each other in the transport direction is set reversely, the couple force due to the positional deviation can be effectively eliminated. Also, a comb-like mud-dropping nail with 3 or more nails 1
8 may be used to form the pair of nails T.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

[Figure 1] Side view of the strawberries seedling harvester

[Fig. 2] Plan view of the strawberries seedling harvester

FIG. 3 is a cross-sectional view of the main part of the digging device.

FIG. 4 is a partial plan view of the digging device.

FIG. 5 is a side view showing the structure of the sludge transporting device.

FIG. 6 is a cross-sectional view of the main part of the sludge transporting device

FIG. 7 is a perspective view showing a mounted state of the mud dropping claws.

FIG. 8 is a cross-sectional view of a main part of a mud-dropping conveyance device using a pair of claws having another structure.

9 is a perspective view of a pair of claws shown in FIG.

10 is a plan view of the pair of claws shown in FIG.

[Explanation of symbols]

 2 Nip-lifting device 3 Mud-dropping transport device 3B Drive swing mechanism 18 Mud-dropping claw 19 Endless rotation band T-claw pair

Claims (2)

[Claims] 1. A sandwiching and lifting device (2) capable of lifting and transporting a seedling excavated from the ground rearward and upward in a hanging posture with the stem portion sandwiched, and seedlings transported by this. A sludge transporting device (3) which acts on the root part of the plant and gives a rearward transporting force along the sandwiching and lifting device (2), and removes mud on the root part. By swinging (3) in the left-right direction, the mud dropping claw (1
A large number of claw pairs (T) formed by arranging 8) side by side are attached to the endless rotation band (19), and the claw pairs (T) are
A mud-dropping part structure of a crop seedling harvester, which is provided with a drive rocking mechanism (3B) that drives the left and right mud dropping claws (18) and (18) to face each other so as to rock in opposite directions. 2. The left and right mud dropping claws (18), (18)
In the state where they are swung toward each other, the left and right mud dropping claws (18), (18) are arranged so that the movement paths of the mud dropping claws (18), (18) can interfere with each other when viewed in the transport direction. 2. The mud dropping structure of the crop seedling harvesting machine according to claim 1, wherein the positions are displaced in the front and rear.